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weitere Zeitschriftenartikel

01.12.2019 | Research | Ausgabe 1/2019 Open Access

A WSN positioning algorithm based on 3D discrete chaotic mapping

Wireless sensor networks are featured by restricted network resources, which is quite possible to result in low positioning precision and serious time delay in positioning, accordingly, the overall network positioning quality may be reduced; to …

Autoren:
Tu Li, Wang Yan, Li Ping, Peng Fang

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Detection of an unknown radio transmitter using an enhanced K-nearest neighbor algorithm based on virtual reference point and RSSD information

Accurate detection of the unknown radio transmitter (URT) is crucial to combat illegal occupation of radio signal resources and protect communication system from harmful signal interference. The fingerprint positioning technique based on received …

Autoren:
Liyang Zhang, Taihang Du, Chundong Jiang

01.12.2019 | Research | Ausgabe 1/2019 Open Access

On the performance of receiver strategies for cooperative relaying cellular networks with NOMA

In this paper, a receiver scheme for a cooperative multi-relay system with non-orthogonal multiple access (CMRS-NOMA) in cellular networks is proposed. In our proposed system, the base station (BS) would like to communicate with multiple users via …

Autoren:
Jinjuan Ju, Guoan Zhang, Qiang Sun, Li Jin, Wei Duan

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Customer churn prediction in telecom using machine learning in big data platform

Customer churn is a major problem and one of the most important concerns for large companies. Due to the direct effect on the revenues of the companies, especially in the telecom field, companies are seeking to develop means to predict potential …

Autoren:
Abdelrahim Kasem Ahmad, Assef Jafar, Kadan Aljoumaa

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Reinforcement learning-based dynamic band and channel selection in cognitive radio ad-hoc networks

In cognitive radio (CR) ad-hoc network, the characteristics of the frequency resources that vary with the time and geographical location need to be considered in order to efficiently use them. Environmental statistics, such as an available …

Autoren:
Sung-Jeen Jang, Chul-Hee Han, Kwang-Eog Lee, Sang-Jo Yoo

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Enabling multi-hop remote method invocation in device-to-device networks

To avoid shrinking down the performance and preserve energy, low-end mobile devices can collaborate with the nearby ones by offloading computation intensive code. However, despite the long research history, code offloading is dilatory and unfit …

Autoren:
Minh Le, Stephen Clyde, Young-Woo Kwon

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Ant colony optimization algorithm based on mobile sink data collection in industrial wireless sensor networks

Industrial wireless sensor network (IWSN) has changed the information transmission way for existing industrial control system. In mobile sink-based industrial wireless sensor networks, the energy consumption optimization for data collection has …

Autoren:
Hong Zhang, Zhanming Li, Wanneng Shu, Jarong Chou

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Multi-objective routing aware of mixed IoT traffic for low-cost wireless Backhauls

The futuristic wireless networks expects to provide adequate support for distinct kind of applications, their diverse requirements, and scenarios for future Internet systems, such as Internet of Things based on multimedia and sensor data, while …

Autoren:
Vinícius N. Medeiros, Bruno Silvestre, Vinicius C. M. Borges

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Performance of a dense urban massive MIMO network from a simulated ray-based channel

Massive MIMO network deployments are expected to be a key feature of the upcoming 5G communication systems. Such networks are able to achieve a high level of channel quality and can simultaneously serve multiple users with the same resources. In …

Autoren:
Mohammed Zahid Aslam, Yoann Corre, Emil Björnson, Erik G. Larsson

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Joint rate control and power allocation for low-latency reliable D2D-based relay network

Emerging 5G applications impose stringent requirements on network latency and reliability. In this work, we propose a low-latency reliable device-to-device (D2D) relay network framework to improve the cell coverage and user satisfaction.

Autoren:
Yahui Wang, Yanhua He, Chen Xu, Zhenyu Zhou, Shahid Mumtaz, Jonathan Rodriguez, Haris Pervaiz

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Reliability enhancement in multi-numerology-based 5G new radio using INI-aware scheduling

Multi-numerology waveform-based 5G new radio (NR) systems offer great flexibility for different requirements of users and services. However, there is a new type of problem that is defined as inter-numerology interference (INI) between multiple …

Autoren:
Ahmet Yazar, Hüseyin Arslan

01.12.2019 | Research | Ausgabe 1/2019 Open Access

A cost-effective decentralized vehicle remote positioning and tracking system using BeiDou Navigation Satellite System and Mobile Network

Most existing production vehicle tracking services rely on the Global Positioning System (GPS) and a proprietary server/client infrastructure. This type of inflexible and centralized architecture incurs severe vender-dependency and high service …

Autoren:
Jingfa Wei, Chui-Hui Chiu, Feijiang Huang, Junjun Zhang, Chenglin Cai

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Characterization of dynamic wireless body area network channels during walking

In this work, finite-difference time-domain was used for the investigation of dynamic wireless body area network channel characteristics during walking, thus accounting for dynamic aspects and body postures. This involves the study of on-body …

Autoren:
Marshed Mohamed, Wout Joseph, Günter Vermeeren, Emmeric Tanghe, Michael Cheffena

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Cross layer resource allocation for fault-tolerant topology control in wireless mesh networks based on genetic algorithm

Optimal topology control is an essential factor for efficient development of wireless mesh networks. For this purpose, a set of available tools can be exploited including power control, rate adaptation, channel assignment, channel selection …

Autoren:
Esmaeil Nik Maleki, Ghasem Mirjalily

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Demonstrability of Narrowband Internet of Things technology in advanced metering infrastructure

The deployment cost of advanced metering infrastructure (AMI), one of the key elements for smart grid, often arises from three sub-systems, respectively referred to as data management system, communication network, and smart devices. Among them …

Autoren:
Liang Wan, Zhijian Zhang, Jian Wang

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Efficient energy resource utilization in a wireless sensor system for monitoring water quality

In this paper, a new approach to energy harvesting and data transmission optimization in a heterogeneous-based multi-class and multiple resource wireless transmission wireless sensor network system that focus on monitoring water and its quality is …

Autoren:
Segun O. Olatinwo, Trudi H. Joubert

01.12.2019 | Research | Ausgabe 1/2019 Open Access

The research of the application of the binary search algorithm of RFID system in the supermarket shopping information identification

The traditional bar code scanning in supermarkets is inefficient, which has been unable to meet the further development of a supermarket. To meet the needs of quick shopping in supermarkets, binary search algorithm has been proposed to prevent …

Autoren:
Ling Wu, Sheng Liu, Baoling Zhao, Weinan Wu, Baozhong Zhu

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Research on distribution route with time window and on-board constraint based on tabu search algorithm

In order to solve the problem of the optimization of delivery and pickup cargoes’ routes with time windows under the constraints of load and road, the method and algorithm were designed and researched based on these factors. Firstly, the model was …

Autoren:
Chenglin Ma, Yanyan Yang, Lihai Wang, Chu Chu, Chao Ma, Lihua An

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Uplink achievable rate in underlay random access OFDM-based cognitive radio networks

This paper investigates the uplink achievable rate of secondary users (SUs) in underlay orthogonal frequency division multiplexing based cognitive radio networks, where the SUs randomly access the subcarriers of the primary network. In practice …

Autoren:
Han-Bae Kong, Sabit Ekin, Erchin Serpedin, Khalid A. Qaraqe

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Investigation of the construction of intelligent logistics system from traditional logistics model based on wireless network technology

With the continuous development of science and technology, wireless network technology has played an important role in the construction of intelligent logistics system. Under this background, based on the wireless network technology, the …

Autoren:
Quan Ouyang, Jun Zheng, Shunlin Wang

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Better than Rician: modelling millimetre wave channels as two-wave with diffuse power

This contribution provides experimental evidence for the two-wave with diffuse power (TWDP) fading model. We have conducted two indoor millimetre wave measurement campaigns with directive horn antennas at both link ends. One horn antenna is …

Autoren:
Erich Zöchmann, Sebastian Caban, Christoph F. Mecklenbräuker, Stefan Pratschner, Martin Lerch, Stefan Schwarz, Markus Rupp

01.12.2019 | Research | Ausgabe 1/2019 Open Access

A cooperative spectrum sensing method based on information geometry and fuzzy c-means clustering algorithm

To improve spectrum sensing performance, a cooperative spectrum sensing method based on information geometry and fuzzy c-means clustering algorithm is proposed in this paper. In the process of signal feature extraction, a feature extraction method …

Autoren:
Shunchao Zhang, Yonghua Wang, Jiangfan Li, Pin Wan, Yongwei Zhang, Nan Li

01.12.2019 | Research | Ausgabe 1/2019 Open Access

WiFi/PDR-integrated indoor localization using unconstrained smartphones

In this paper, we propose a WiFi/pedestrian dead reckoning (PDR)-integrated localization approach based on unscented Kalman filters (UKF). The UKF integrating WiFi localization with PDR is used for ultimate location estimation. Instead of setting …

Autoren:
Jianguo Yu, Zhenyu Na, Xin Liu, Zhian Deng

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Random forest and WiFi fingerprint-based indoor location recognition system using smart watch

Various technologies such as WiFi, Bluetooth, and RFID are being used to provide indoor location-based services (LBS). In particular, a WiFi base using a WiFi AP already installed in an indoor space is widely applied, and the importance of indoor …

Autoren:
Sunmin Lee, Jinah Kim, Nammee Moon

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Energy-efficient and secure mobile node reauthentication scheme for mobile wireless sensor networks

Mobile wireless sensor networks (MWSNs) are a relatively new type of WSN where the sensor nodes are mobile. Compared to static WSNs, MWSNs provide many advantages, but their mobility introduces the problem of frequent reauthentication. Several …

Autoren:
BoSung Kim, JooSeok Song

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Robust adaptive distributed beamforming for energy-efficient network flooding

In a device-to-device wireless multi-hop communication scenario with resource-constrained devices, the energy efficiency of communication plays a significant role in network design and operation. Based on the recently proposed Glossy network …

Autoren:
Abdelrahman Abdelkader, Eduard Jorswieck

01.12.2019 | Research | Ausgabe 1/2019 Open Access

RSSD-based 3-D localization of an unknown radio transmitter using weighted least square and factor graph

Realizing accurate detection of an unknown radio transmitter (URT) has become a challenging problem due to its unknown parameter information. A method based on received signal strength difference (RSSD) fingerprint positioning technique and using …

Autoren:
Liyang Zhang, Taihang Du, Chundong Jiang

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Robot indoor location modeling and simulation based on Kalman filtering

Wireless signal fingerprint positioning technology has been widely used in indoor positioning. In view of the influence of a large number of interference noise in indoor, the error of receive signal strength indicator is large, the more complex …

Autoren:
Jian Yin Lu, Xinjie Li

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Efficient packet transmission in wireless ad hoc networks with partially informed nodes

One formal way of studying cooperation and incentive mechanisms in wireless ad hoc networks is to use game theory. In this respect, simple interaction models such as the forwarder’s dilemma have been proposed and used successfully. However, this …

Autoren:
Sara Berri, Samson Lasaulce, Mohammed Said Radjef

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Performance analysis of multiuser dual-hop satellite relaying systems

In this study, we investigate the outage probability (OP) of a multiuser dual-hop satellite relaying system with decode-and-forward (DF) protocol, where both uplink and downlink experience Shadowed Rician (SR) fading. Specifically,by taking the …

Autoren:
Xuewen Wu, Min Lin, Qingquan Huang, Jian Ouyang, Athanasios D. Panagopoulos

01.12.2019 | Research | Ausgabe 1/2019 Open Access

EKF/UKF-based channel estimation for robust and reliable communications in V2V and IIoT

Cyber-physical systems (CPSs) are characterized by integrating computation, communication, and physical system. In typical CPS application scenarios, vehicle-to-vehicle (V2V) and Industry Internet of Things (IIoT), due to doubly selective fading …

Autoren:
Yong Liao, Xuanfan Shen, Guodong Sun, Xuewu Dai, Shaohua Wan

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Trust-based recommendation systems in Internet of Things: a systematic literature review

Internet of Things (IoT) creates a world where smart objects and services interacting autonomously. Taking into account the dynamic-heterogeneous characteristic of interconnected devices in IoT, demand for a trust model to guarantee security …

Autoren:
Venus Mohammadi, Amir Masoud Rahmani, Aso Mohammed Darwesh, Amir Sahafi

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Dynamic dual threshold cooperative spectrum sensing for cognitive radio under noise power uncertainty

The spectrum sensing performance depends on the accuracy of the detection about whether primary users are busy or idle. Previous studies on cognitive radio spectrum sensing have shown that the cooperation between secondary users can improve their …

Autoren:
Runze Wan, Lixin Ding, Naixue Xiong, Wanneng Shu, Li Yang

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Spatial modulation based on reconfigurable antennas: performance evaluation by using the prototype of a reconfigurable antenna

In this paper, we study the performance of spatial modulation based on reconfigurable antennas. Two main contributions are provided. We introduce an analytical framework to compute the error probability, which is shown to be accurate and useful …

Autoren:
Dung Nguyen Viet, Marco Di Renzo, Vedaprabhu Basavarajappa, Beatriz Bedia Exposito, Jose Basterrechea, Dinh-Thuy Phan-Huy

01.12.2019 | Research | Ausgabe 1/2019 Open Access

A quadri-dimensional approach for poor performance prioritization in mobile networks using Big Data

The Management of mobile networks has become so complex due to a huge number of devices, technologies and services involved. Network optimization and incidents management in mobile networks determine the level of the quality of service provided by …

Autoren:
Maluambanzila Minerve Mampaka, Mbuyu Sumbwanyambe

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Investigating the adoption of big data analytics in healthcare: the moderating role of resistance to change

Big data analytics is gaining substantial attention due to its innovative contribution to decision making and strategic development across the healthcare field. Therefore, this study explored the adoption mechanism of big data analytics in …

Autoren:
Muhammad Shahbaz, Changyuan Gao, LiLi Zhai, Fakhar Shahzad, Yanling Hu

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Channel estimation for FDD massive MIMO system by exploiting the sparse structures in angular domain

Massive multiple-input multiple-output (MIMO) is a powerful supporting technology to meet the energy/spectral efficiency and reliability requirement of Internet of Things (IoT) network. However, the gain of massive MIMO relies on the availability …

Autoren:
Yurong Wang, Xiaochen Xia, Kui Xu, Wei Xie, Minghai Wang

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Design of Micro-strip Symmetrical Dual-band Filter Based on Wireless Sensor Network Nodes

The micro-strip antenna filter design of wireless sensor network nodes is usually used to improve the out-of-band suppression and frequency selectivity by increasing the order of the filters, but the filters are usually single band, not only the …

Autoren:
Wenbo Cheng, Kai Deng, Wei Cheng

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Data offloading in IoT environments: modeling, analysis, and verification

Recent years have seen a significant growth in Internet of Things (IoT) technology consisting of a large number of devices embedded with sensors and deployed to perform monitoring and actuation tasks. The IoT devices collect large volumes of data …

Autoren:
Ankan Ghosh, Osman Khalid, Rao N. B. Rais, Amjad Rehman, Saif U. R. Malik, Imran A. Khan

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Diversity gain of millimeter-wave massive MIMO systems with distributed antenna arrays

This paper is concerned with diversity gain analysis for millimeter-wave (mmWave) massive MIMO systems employing distributed antenna subarray architecture. First, for a single-user mmWave system in which the transmitter and receiver consist of Kt …

Autoren:
Dian-Wu Yue, Shuai Xu, Ha H. Nguyen

01.12.2019 | Research | Ausgabe 1/2019 Open Access

An agile and effective network function virtualization infrastructure for the Internet of Things

The processing and power-consumption constraints of the Internet of Things devices hinder them to offer more complex network services than the simple data transmission in smart city scenarios. The lack of complex services, such as security and …

Autoren:
Diogo Menezes Ferrazani Mattos, Pedro Braconnot Velloso, Otto Carlos Muniz Bandeira Duarte

01.12.2019 | Research | Ausgabe 1/2019 Open Access

A cooperative V2X MAC protocol for vehicular networks

In support of traffic safety applications, vehicular networks should offer a robust Medium Access Control (MAC) layer protocol that can provide a reliable delivery service to safety-related messages. As the safety applications generally use …

Autoren:
Mohamed A. Abd El-Gawad, Mahmoud Elsharief, HyungWon Kim

01.12.2019 | Research | Ausgabe 1/2019 Open Access

A game-theoretic learning approach to QoE-driven resource allocation scheme in 5G-enabled IoT

To significantly promote Internet of Things (IoT) development, 5G network is enabled for supporting IoT communications without the limitation of distance and location. This paper investigates the channel allocation problem for IoT uplink …

Autoren:
Haibo Dai, Haiyang Zhang, Wei Wu, Baoyun Wang

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Antenna array design by a contraction adaptive particle swarm optimization algorithm

Massive multiple input multiple output (MIMO) has drawn intensive attention of researchers for solving huge data transmissions in the fifth generation wireless communication. Antennas aligning in array bring in advantages for interference …

Autoren:
Xin Zhang, Dunqiang Lu, Xiu Zhang, Yue Wang

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Similarity-aware data aggregation using fuzzy c-means approach for wireless sensor networks

For resource-constrained IoT systems, data collection is one of the fundamental operations to reduce the energy dissipation of sensor nodes and improve the network lifetime. However, an anomaly or deviation will exert a great influence on the …

Autoren:
Runze Wan, Naixue Xiong, Qinghui Hu, Haijun Wang, Jun Shang

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Performance analysis of wireless-powered cognitive radio networks with ambient backscatter

Ambient backscatter is a promising wireless communication technique where low-power users communicate with each other without any dedicated power source. These communicating users transmit their information by reflecting ambient radio-frequency …

Autoren:
Daniyal Munir, Syed Tariq Shah, Kae Won Choi, Tae-Jin Lee, Min Young Chung

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Interference coordination for millimeter wave communications in 5G networks for performance optimization

To address the increasing data rate demands for future wireless networks, a dense deployment of base stations or access points is the most promising approach; however, doing so may cause high intercell interference (ICI). Numerous interference …

Autoren:
Jiao Wang, Jay Weitzen, Oguz Bayat, Volkan Sevindik, Mingzhe Li

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Indoor location method of interference source based on deep learning of spectrum fingerprint features in Smart Cyber-Physical systems

The intensity acquisition and fluctuation of the signal intensity of the interference source caused by the indoor multipath effect are very great, and there is a problem that the best eigenvalue is difficult to choose. A kind of unsupervised …

Autoren:
Yunfei Chen, Taihang Du, Chundong Jiang, Shuguang Sun

01.12.2019 | Research | Ausgabe 1/2019 Open Access

A novel CSI-based fingerprinting for localization with a single AP

WiFi-based indoor localization techniques are critical for location-based services. Among them, fingerprint-based method gains considerable interest due to its high accuracy and low equipment requirement. One of the major challenges faced by …

Autoren:
Lei Zhang, Enjie Ding, Yanjun Hu, Yafeng Liu

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Cost-efficient BLE fingerprint database construction approach via multi-quadric RBF interpolation

The demand for indoor localization is becoming urgent, but the traditional location fingerprint approach takes a lot of manpower and time to construct a fine-grained location fingerprint database. To address this problem, we propose to use the …

Autoren:
Liangbo Xie, Xiaoxiao Jin, Mu Zhou, Yue Wang, Zengshan Tian

01.12.2019 | Research | Ausgabe 1/2019 Open Access

The sustainable development information management of Winter Olympics based on Internet-based wireless sensor network

Environment is the foundation for human survival. Sustainable development is the main direction of social progress and the common choice of human progress. The development of the Winter Olympic Games is closely related to the progress of mankind …

Autoren:
Maomao Zhang, Feng Zhai

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Approximating trigonometric functions by using exponential inequalities

In this paper, some exponential inequalities are derived from the inequalities containing trigonometric functions. Numerical examples show that one can achieve much tighter bounds than those of prevailing methods, which are presented by Cusa …

Autoren:
Xiao-Diao Chen, Junyi Ma, Yixin Li

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Delay constrained throughput optimization in multi-hop AF relay networks, using limited quantized CSI

In this paper, we analyze the throughput of multi-hop amplify and forward (AF) relay networks in delay-constrained scenario. Using quantized channel state information (CSI), the transmission rates and powers are discretely adapted with individual …

Autoren:
Mehrdad Taki, Tommy Svensson, Mohammad Bagher Nezafati

01.12.2019 | Original article | Ausgabe 1/2019 Open Access

Are trade and transport logistics activities mutually reinforcing? Some empirical evidences from ASEAN countries

Both trade and transport logistics activities have impressively flourished among the Association of Southeast Asian Nations (ASEAN) countries over the past decades. Based on these observations, this paper conjectures that trade liberalization and …

Autoren:
Kee-hung Lai, Yu Pang, Christina W. Y. Wong, Y. H. Venus Lun, Y. N. Eppie Ng

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Design and implementation of AD9361-based software radio receiver

Existing software radio platforms constructed by discrete devices have many disadvantages, such as high power consumption, high cost, and poor portability. In this study, an AD9361-based software radio communication system was designed on the …

Autoren:
Feng Tian, Hanqing Li, Liangchen Yuan

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Reflection probability in wireless networks with metasurface-coated environmental objects: an approach based on random spatial processes

An emerging and promising vision of wireless networks consists of coating the environmental objects with reconfigurable metasurfaces that are capable of modifying the radio waves impinging upon them according to the generalized law of reflection.

Autoren:
Marco Di Renzo, Jian Song

01.12.2019 | Original Article | Ausgabe 1/2019

Computational simulation of inhibitory effects of curcumin, retinoic acid and their conjugates on GSK-3 beta

Turmeric, since in ancient Indian traditional medicinal system, has been implicated for its therapeutic and chemopreventive properties against a broad spectrum of diseases. Curcumin, the active polyphenol from turmeric, helps to obstruct the …

Autoren:
Hemanshi Mishra, Rajesh Kumar Kesharwani, Dev Bukhsh Singh, Sandeep Tripathi, Shiv Kumar Dubey, Krishna Misra

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Cyclostationarity-based DOA estimation algorithms for coherent signals in impulsive noise environments

Estimating direction of arrival (DOA) is important in a variety of practical applications. Conventional cyclostationarity-based coherent DOA estimation algorithms are not robust to non-Gaussian α-stable impulsive noise. Additionally, fractional …

Autoren:
Yang Liu, Qiong Wu, Yinghui Zhang, Jing Gao, Tianshuang Qiu

01.12.2019 | Research | Ausgabe 1/2019 Open Access

An algorithm for jamming strategy using OMP and MAB

Reinforcement learning (RL) has the advantage of interaction with an environment over time, which is helpful in cognitive jamming research, especially in an electronic warfare-type scenario, in which the communication parameters and jamming effect …

Autoren:
Shaoshuai ZhuanSun, Jun-an Yang, Hui Liu

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Realistic propagation effects on wireless sensor networks for landslide management

This paper presents the development of propagation models for wireless sensor networks for landslide management systems. Measurements of path loss in potential areas of landslide occurrence in Thailand were set up. The effect of the vegetation and …

Autoren:
Nattakarn Shutimarrungson, Pongpisit Wuttidittachotti

01.12.2019 | Regular article | Ausgabe 1/2019 Open Access

Understanding news outlets’ audience-targeting patterns

The power of the press to shape the informational landscape of a population is unparalleled, even now in the era of democratic access to all information outlets. However, it is known that news outlets (particularly more traditional ones) tend to …

Autoren:
Erick Elejalde, Leo Ferres, Rossano Schifanella

01.12.2019 | Research | Ausgabe 1/2019 Open Access

The IllustrisTNG simulations: public data release

We present the full public release of all data from the TNG100 and TNG300 simulations of the IllustrisTNG project. IllustrisTNG is a suite of large volume, cosmological, gravo-magnetohydrodynamical simulations run with the moving-mesh code Arepo.

Autoren:
Dylan Nelson, Volker Springel, Annalisa Pillepich, Vicente Rodriguez-Gomez, Paul Torrey, Shy Genel, Mark Vogelsberger, Ruediger Pakmor, Federico Marinacci, Rainer Weinberger, Luke Kelley, Mark Lovell, Benedikt Diemer, Lars Hernquist

01.12.2019 | Research | Ausgabe 1/2019 Open Access

An optimization routing protocol for FANETs

With the wide-ranging application of mobile ad hoc networks, flying ad hoc networks (FANETs) have received more and more attention from the industry. Routing technology is a key technology of ad hoc networks. The high-speed mobility of nodes poses …

Autoren:
Hua Yang, Zhiyong Liu

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Detecting taxi movements using Random Swap clustering and sequential pattern mining

Moving objects such as people, animals, and vehicles have generated a large amount of spatiotemporal data by using location-capture technologies and mobile devices. This collected data needs to be processed, visualized and analyzed to transform …

Autoren:
Rami Ibrahim, M. Omair Shafiq

01.12.2019 | Research | Ausgabe 1/2019 Open Access

An empower hamilton loop based data collection algorithm with mobile agent for WSNs

In wireless sensor networks (WSNs), sensor devices must be equipped with the capabilities of sensing, computation and communication. These devices work continuously through non-rechargeable batteries under harsh conditions, the batter span of …

Autoren:
Jin Wang, Xiujian Gu, Wei Liu, Arun Kumar Sangaiah, Hye-Jin Kim

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Energy-efficient radio-over-fiber system for next-generation cloud radio access networks

The paper proposes a novel adaptive radio-over-fiber (RoF) system for next-generation cloud radio access network (C-RAN), aiming to optimize the operation cost in terms of power consumption while maintaining required data rate. By jointly …

Autoren:
Bo Wang, Limei Peng, Pin-Han Ho

01.12.2019 | Research | Ausgabe 1/2019 Open Access

Outdoor location tracking of mobile devices in cellular networks

This paper presents a technique and experimental validation for anonymous outdoor location tracking of all users residing on a mobile cellular network. The proposed technique does not require any intervention or cooperation on the mobile side but …

Autoren:
Jens Trogh, David Plets, Erik Surewaard, Mathias Spiessens, Mathias Versichele, Luc Martens, Wout Joseph

01.12.2019 | Research | Ausgabe 1/2019 Open Access

A hotspot-based probabilistic cache placement policy for ICN in MANETs

Cache placement is an integral part of information centric networking (ICN) for optimizing the performance of network. The majority of the existing research on cache placement explores fixed or semi fixed network. The present study proposed a …

Autoren:
Cheng Zhang, Chunhe Xia, Yu Li, Haiquan Wang, Xiaojian Li

01.07.2019 | Kolumne | Ausgabe 3/2019

1 + 1 = 3

Autor:
Uwe Walter

13.06.2019 | Original Paper

Wide baseline pose estimation from video with a density-based uncertainty model

Robust wide baseline pose estimation is an essential step in the deployment of smart camera networks. In this work, we highlight some current limitations of conventional strategies for relative pose estimation in difficult urban scenes. Then, we …

Autoren:
Nicola Pellicanò, Emanuel Aldea, Sylvie Le Hégarat-Mascle

13.06.2019

Design of a Practical WSN Based Fingerprint Localization System

Fingerprint positioning technology is among the most promising choices for seamless localization and is anticipated to be the future of seamless-locating services. The convenience of deployment and the high density signal source of wireless sensor …

Autoren:
Deyue Zou, Shuyi Chen, Shuai Han, Weixiao Meng, Di An, Jinqiang Li, Wanlong Zhao

13.06.2019

QoE awareness in progressive caching and DASH-based D2D video streaming in cellular networks

In this paper, we present an architecture to improve video streaming quality of experience (QoE) in cellular networks with high user equipment (UE) density. In the proposed architecture, video segments are progressively cached, as requested, in …

Autoren:
Ala’a Al-Habashna, Gabriel Wainer

13.06.2019 Open Access

Towards Responsible and Sustainable Supply Chains – Innovation, Multi-stakeholder Approach and Governance

Supply chains are an indispensable element of any global economy. At the same time such supply chains create a societal and environmental burden. Drastic actions are required to mitigate these effects. Supply chains should become responsible and …

Autor:
Agata Gurzawska

13.06.2019 | Original Paper

Can Apps Make Air Pollution Visible? Learning About Health Impacts Through Engagement with Air Quality Information

Air pollution is one of the largest environmental health risks globally but is often imperceptible to people. Air quality smartphone applications (commonly called apps) provide real-time localized air quality information and have the potential to …

Autoren:
Magali A. Delmas, Aanchal Kohli

13.06.2019 | Original Paper

Responsible Practices in the Wild: An Actor-Network Perspective on Mobile Apps in Learning as Translation(s)

Competence to enact responsible practices, such as recycling waste or boycotting irresponsible companies, is core to learning for responsibility. We explore the role of apps in learning such responsible practices ‘in the wild,’ outside formal …

Autoren:
Oliver Laasch, Dirk C. Moosmayer, Frithjof Arp

13.06.2019 | ORIGINAL ARTICLE

Generation behavior of tar from ABS, PC, and PE during pyrolysis and steam gasification by mass spectrometry

Gasification is attracting attention as a method of chemically recycling waste plastics. However, gasification generates tar, which consists primarily of polycyclic aromatic hydrocarbons (PAHs), as a byproduct. Our study aims to elucidate the …

Autoren:
Yoko Nunome, Toshiya Suzuki, Ivan Nedjalkov, Yasuaki Ueki, Ryo Yoshiie, Ichiro Naruse

12.06.2019

Conceptual model for informing user with innovative smart wearable device in industry 4.0

The everyday needs of people with disabilities represent a challenge in designing new and innovative services. The capabilities provided by modern communication technologies designed by assistive technology models can help people with disabilities …

Autoren:
Marko Periša, Tibor Mijo Kuljanić, Ivan Cvitić, Peter Kolarovszki

12.06.2019 | Original Paper

It’s About Distributing Rather than Sharing: Using Labor Process Theory to Probe the “Sharing” Economy

The sharing economy has been examined from many angles, including the engagement of customers, the capabilities of the technological platforms, and the experiences of those who sell products or services. We focus on labor in the sharing economy.

Autoren:
Sunyu Chai, Maureen A. Scully

12.06.2019 | Symposium: New Measures, New Ideas

Society Caught in a Labyrinth of Algorithms: Disputes, Promises, and Limitations of the New Order of Things

We are in the interim of the massive expansion of the new and fundamental technology, which is represented by the advanced algorithms of AI. No one knows the real potential of machine learning and AI. Letting the algorithms drive autonomous …

Autor:
Tomas Hauer

12.06.2019 | Original Paper

Ideals-Based Accountability and Reputation in Select Family Firms

We develop a model of ideals-based accountability (IBA) which we have witnessed at work in several long-thriving family businesses. The owners and managers of these firms eschew individualism and materiality in the pursuit of ethical ideals such …

Autoren:
Isabelle Le Breton-Miller, Danny Miller

11.06.2019

A comprehensive and systematic review of the load balancing mechanisms in the Internet of Things

The Internet of Things (IoT) is a network of different objects that refers to an environment in which intelligent devices around us can connect to the Internet and exchange information together. A large number of generated events from IoT objects …

Autoren:
Behrouz Pourghebleh, Vahideh Hayyolalam

11.06.2019

Fast and efficient energy-oriented cell assignment in heterogeneous networks

The cell assignment problem is combinatorial, with increased complexity when it is tackled considering resource allocation. This paper models joint cell assignment and resource allocation for cellular heterogeneous networks, and formalizes cell …

Autoren:
Javier Rubio-Loyola, Christian Aguilar-Fuster, Luis Diez, Ramon Agüero, Juan Luis-Gorricho, Joan Serrat

11.06.2019

Exploitation of Information Centric Networking in federated satellite: 5G network

With the development of technologies and decreasing of costs, the satellite is expected to play a fundamental role in the 5G era. On the other hand, the Information Centric Networking (ICN) is considered as a promising technology to realize 5G …

Autoren:
Jiadi Chen, Wei Mi, Zongzhen Liu, Yuepeng E, Jingguo Ge

11.06.2019

Counting time in drops: views on the role and importance of smartwatches in dew computing

A large amount of data, called the big data, generated by the devices that are part of the Internet of Things, is expected in the coming years. This scenario creates challenges for sending, processing, and storing all data centrally in the cloud.

Autoren:
Charles Tim Batista Garrocho, Ricardo Augusto Rabelo Oliveira

11.06.2019

IoT-F2N: An energy-efficient architectural model for IoT using Femtolet-based fog network

Energy- and latency-optimized Internet of Things (IoT) is an emerging research domain within fifth-generation (5G) wireless network paradigm. In traditional cloud-centric IoT the sensor data processing and storage occurs inside remote cloud …

Autoren:
Anwesha Mukherjee, Priti Deb, Debashis De, Rajkumar Buyya

11.06.2019 | ORIGINAL ARTICLE

Augmented reality application to support the assembly of highly customized products and to adapt to production re-scheduling

Despite the high automatization that characterizes modern production, human operators still hold a vital position in manufacturing, which should be reinforced in the transition to the era of Industry 4.0. As human operators may support increased …

Autoren:
Dimitris Mourtzis, Vasilios Zogopoulos, Fotini Xanthi

10.06.2019

Effect of ZnO Intermediate Layer Thickness on Performance of Cu2ZnSnS4 Solar Cells

Cu2ZnSnS4 (CZTS) thin films were sputtered on Mo/glass substrates using Cu, Sn and ZnS targets and sulfurized at 570°C. The effect of a ZnO intermediate layer between CZTS and Mo on the microstructure, morphology and photovoltaic properties was …

Autoren:
Bin Liu, Jie Guo, Ruiting Hao, Xinxing Liu, Lu Wang, Kang Gu, Yong Li, Shuaihui Sun

10.06.2019

The 1927 Radio Act as Pre-emption of Common Law Property Rights

The 1927 Radio Act imposed a new legal regime for radio spectrum: The Act established administrative allocations according to the “public interest.” This reform has been credited by the U.S. Supreme Court with bringing order out of chaos and …

Autor:
Thomas W. Hazlett

10.06.2019

Topology Optimizing in FSO-based UAVs Relay Networks for Resilience Enhancement

Applying free space optical (FSO) in unmanned aerial vehicles (UAVs) relay networks has emerged as a promising technology due to high throughput, long transmission range, and the negligible interference incurred by FSO communications. However, FSO …

Autoren:
Zhiqun Gu, Jiawei Zhang, Yuefeng Ji

10.06.2019

Full-Duplex Enabled Time-Efficient Device Discovery for Public Safety Communications

Device-to-device (D2D) communications is the integral part of public safety (PS) communications. However, the most important requirement is the users’ rapid discovery to timely communicate the emergency information. The existing half-duplex (HD) …

Autoren:
Zeeshan Kaleem, Ajmal Khan, Syed Ali Hassan, Nguyen-Son Vo, Long D. Nguyen, Hien M. Nguyen

10.06.2019

SDSN: Software-defined Space Networking — Architecture and Routing Algorithm

Space networking has captured increasing attentions because of its wide application scenarios. Facing to the technical challenges of space networking including topology alteration, non-realtime condition capture and control, and instable …

Autor:
Tianjiao Xie

10.06.2019 | Original Article

Non-artificial non-intelligence: Amazon’s Alexa and the frictions of AI

This paper examines a case where Amazon’s cloud-based AI assistant Alexa accidentally ordered a dollhouse for a 6-year-old girl. In the press, the case was defined as a technical recognition problem. Building on this idea, we argue that the …

Autoren:
Tero Karppi, Yvette Granata

10.06.2019

Performance Evaluation Using Smart: HARQ Versus HARQ Mechanisms Beyond 5G Networks

Since the basic objective of all communication systems is to provide a high-quality performance, the development of effective retransmission schemes with incremental redundancy has gained significant importance recently. In this regard, two …

Autoren:
H. A. Sakr, M. A. Mohamed

10.06.2019

Annealing effects on the performances of Bismuth-doped Indium Zinc Oxide thin-film transistors

In this work, annealing effects on the characteristics of bismuth-doped indium zinc oxide (IZBO) thin films and the electrical properties of IZBO thin-film transistors (TFTs) were investigated. The X-ray diffraction results reveal that all the …

Autoren:
Dong Lin, Xudong Zheng, Jianwen Yang, Kaiwen Li, Jingjing Shao, Qun Zhang

10.06.2019 | Original Paper

Cemented Paste Backfill Geomechanics at a Narrow-Vein Underhand Cut-and-Fill Mine

Underhand cut-and-fill mining has allowed for the safe extraction of ore in many mines operating in weak rock or highly stressed, rockburst-prone ground conditions. However, the design of safe backfill undercuts is typically based on historical …

Autoren:
Michael Jon Raffaldi, Joseph Bradford Seymour, Jerald Richardson, Eric Zahl, Mark Board

10.06.2019 | S.I. 201: Robot Communication Challenges

Transmission of images by unmanned underwater vehicles

As an acoustic communications medium, water is characterized by frequency dependent attenuation, short range, very low bandwidth, scattering, and multi-path. It is generally difficult to acoustically communicate even terse messages underwater much …

Autoren:
Alice Danckaers, Mae L. Seto

08.06.2019 | Technical Paper

Fabrication and characterization of zinc oxide piezoelectric MEMS resonator

Radio frequency (RF) MEMS have been explored for various applications and has become one of the most promising topics due to the high demands for speedy wireless communicating devices as an oscillator/filter (Chorsi and Chorsi 2018 ). In order to …

Autoren:
Prasanna P. Deshpande, Rajesh S. Pande, Rajendra M. Patrikar

08.06.2019 | Technical Paper

Reconfigurable RF-MEMS-based impedance matching networks for a hybrid RF-MEMS/CMOS class-E power amplifier

Microelectromechanical-systems technology (MEMS) applied to radio frequency (RF) and microwave systems (i.e. RF-MEMS) has recently started to exhibit its market potential in applications centred on telecommunications and consumer segments. As …

Autor:
J. Iannacci

08.06.2019

Radio frequency plasma polymerized thin film based on eucalyptus oil as low dielectric permittivity, visible and near-infrared (NIR) photoluminescent material

Thin films derived from eucalyptus oil was fabricated on glass and silicon substrate by rf plasma polymerization technique and characterized by FTIR, FESEM, AFM, Ellipsometry, UV–Visible and Photoluminescence spectroscopy. The dielectric constant …

Autoren:
Beena Mol, Jemy James, K. K. Anoop, Indra Sulaniya, Cyriac Joseph, M. R. Anantharaman, Junaid Bushiri

08.06.2019 | Original Paper

The effect of plasma polymerization of silicon compounds on the properties of biaxially oriented polypropylene (BOPP)

In this study, hexamethyldisiloxane was polymerized on the biaxially oriented polypropylene films by low-pressure radio frequency (RF) plasma. The samples were polymerized by using RF plasma in the frequency range of 13.56 MHz at the different …

Autoren:
S. Hamideh Mortazavi, Amin Jahazi, Mahmood Ghoranneviss

07.06.2019 | Original Article

An exploratory study on perception of celebrity endorsement in public services advertising

An exploratory qualitative study was conducted to examine how young adults perceive the mechanism of creation and the influence of celebrity endorsement in public services advertising. Face-to-face interviews were carried out with 29 persons aged …

Autoren:
Kara Chan, Ting Zhang

07.06.2019 | Original Paper

Evaluating the efficacy of translocation: maintaining habitat key to long-term success for an imperiled population of an at-risk species

The conservation of species at-risk has involved a wide range of recovery methods including population augmentation. Yet, there has been little formal evaluation of the efficacy of this potentially high risk and expensive approach. In the late …

Autoren:
Laura Grant, Chris Johnson, Conrad Thiessen

07.06.2019

Energy Efficient Static Node Selection in Underwater Acoustic Wireless Sensor Network

Energy is the significant limitation in underwater sensor arrangement. In Underwater sensor organization, the sink node uses high energy in charge of sending information from nodes that are more remote away. The battery depleted in a brief span.

Autoren:
R. M. Gomathi, J. Martin Leo Manickam

07.06.2019

Adaptively Controlled Cooperative Spectrum Sensing Using OR Fusion Rule for Throughput Maximization in Cognitive Radio

Utilization of wireless spectrum resources should be improved with the great increase of using wireless services. Cognitive radio (CR) has been proposed to overcome the problem of inefficient use of spectrum holes. Spectrum sensing is the most …

Autoren:
Mohamed Abou ElHassan, Mohammed Abd-Elnaby, Sami A. El-Dolil, Fathi E. Abd El-Samie

07.06.2019

Compress sensing algorithm for estimation of signals in sensor networks

In this research, we present a data recovery scheme for wireless sensor networks. In some sensor networks, each node must be able to recover the complete information of the network, which leads to the problem of the high cost of energy in …

Autoren:
Juan Martinez, Jose Mejia, Boris Mederos, Alberto Ochoa, Oliverio Cruz-Mejía, José Antonio Marmolejo-Saucedo

06.06.2019

PBDT: an Energy-Efficient Posture based Data Transmission for Repeated Activities in BAN

Changes in the BAN topology are caused due to the body movement induced by repeated activities like walking, running, twisting, turning and waving arms. In such activities, individual nodes may move relative to each other and along with this, the …

Autoren:
Tanmoy Maitra, Sarbani Roy

06.06.2019

A Novel Relay-Assisted DCO-OFDM Green VLC System Based on NOMA

In recent years, relaying technique and non-orthogonal multiple access (NOMA) are introduced to visible light communication (VLC) system to improve the system performance. Relay-assisted VLC system can boost link reliability and extend effective …

Autoren:
Xin Liu, Yuyao Wang, Zhenyu Na, Mudi Xiong

06.06.2019 | Original Article

Conversion of Pistacia atlantica mutica oil to trimethylolpropane fatty acid triester as a sustainable lubricant

Biolubricants have received growing interest as potential substitutes to conventional petroleum-based lubricants. Due to their renewability, biodegradability, and superior properties compared with mineral lubricants, they can play a significant …

Autoren:
Sharokh Mehdi, Ali Asghari, Barat Ghobadian, Masoud Dehghani Soufi

05.06.2019

Speech and language processing for assessing child–adult interaction based on diarization and location

Understanding and assessing child verbal communication patterns is critical in facilitating effective language development. Typically speaker diarization is performed to explore children’s verbal engagement. Understanding which activity areas …

Autoren:
John H. L. Hansen, Maryam Najafian, Rasa Lileikyte, Dwight Irvin, Beth Rous

05.06.2019

Processing of Synthetic Aperture Radar Data Using Frequency Modulated Signals

The main objective of Synthetic Aperture Radar (SAR) processing is converting the raw acquired data into pixels in the final processed image. The signal is spread in the range and azimuth directions, and the signal migrates to other range cells.

Autoren:
Zeinab M. Fawzy, Fathi E. Abd El-samie, Mohamed Fouad

05.06.2019

NERA: A new and efficient RSU based authentication scheme for VANETs

In vehicular ad-hoc networks (VANETs), the correctness of a message requires authentication of the origin vehicle. In this paper, we introduce a novel authentication scheme for VANETs which suggests a new solution for secure vehicle …

Autoren:
Majid Bayat, Morteza Pournaghi, Majid Rahimi, Mostafa Barmshoory

04.06.2019

A trusted fuzzy based stable and secure routing algorithm for effective communication in mobile adhoc networks

Mobile Ad-hoc Networks have distinct characteristics namely lack of centralized control and management, severe resource constraints in terms of energy level of nodes, computing power, frequent mobility and frequent change of topology. This dynamic …

Autoren:
A. R. Rajeswari, K. Kulothungan, Sannasi Ganapathy, A. Kannan

04.06.2019

Evaluating the Performance of Cooperative NOMA with Energy Harvesting Under Physical Layer Security

In this paper, we consider a non-orthogonal multiple access system with imperfect successive interference cancellation and physical layer security where the source node communicates with Users via an energy harvesting relay node. This node uses a …

Autoren:
Thi Anh Le, Hyung Yun Kong

04.06.2019

Minimizing Remote Monitoring Service Cost of Wireless Sensor Networks Using Krill Swarm Optimization

In wireless sensor networks (WSN), for reliability, load balancing and security reason, various sinks, for the most part, sent for gathering different copies of checking data, which causes high vitality use and network lifetime diminishment.

Autoren:
Tibin Mathew Thekkil, N. Prabakaran

04.06.2019 | Original Research

Impact of plasma treatment on acoustic properties of natural cellulose materials

Various plasma polymeric material modification technologies are based on plasma discharges in different gases. Due to plasma treatment, numerous chemical and physical changes occur in the exposed materials, whereby the treated materials change …

Autoren:
Sanja S. Pavlović, Snežana B. Stanković, Andrijana Žekić, Miloš Nenadović, Dušan M. Popović, Vladimir Milosavljević, Goran B. Poparić

04.06.2019 | AT ENTERPRISES AND INSTITUTES | Ausgabe 1-2/2019

Production of Aluminum-Graphite Composite by Spark Plasma Sintering

An aluminum-graphite composite was obtained by spark plasma sintering. The graphite particle size, compaction temperature, and soaking time were shown to influence the aluminum carbide formation process. It is demonstrated that the use of larger …

Autoren:
N. A. Rubinkovskii, D. P. Shornikov, A. V. Tenishev, A. G. Zaluzhnyi, A. G. Zholnin

03.06.2019

Learning-based multi-relay selection for cooperative networks based on compressed sensing

Cooperative relaying is an effective technology to improve the secrecy capacity of physical-layer (PHY) security. Multiple relays can help further exploit the spatial diversity of cooperative networks. In power-limited networks, relay selection …

Autoren:
Xiaomei Fu, Jialun Li, Shuai Chang

03.06.2019

RECOD: reliable detection protocol for large-scale and dynamic continuous objects in wireless sensor networks

Whether individual objects such as enemy tanks or intruders have been reliably detected typically depends on the number of data reports successfully delivered to a sink node from the sensor nodes surrounding the object. When the number of data …

Autoren:
Yongbin Yim, Soochang Park, Euisin Lee, Ki-Dong Nam, Cheonyong Kim, Sang-Ha Kim

03.06.2019 Open Access

Energy Efficient Mobility Enhancement in LTE Pico–Macro HetNet Systems

Mobility management plays an important role in heterogeneous networks (HetNets), because it helps to reduce radio link failures, handover delays, and power consumption, and enhances offloading benefits. In the present study, two cases are …

Autoren:
Sinan A. Khwandah, John P. Cosmas, Pavlos I. Lazaridis, Ian A. Glover, Zaharias D. Zaharis, Neeli R. Prasad

03.06.2019

Microwave permittivity of MWCNT, Ca1 − xBaxBi2Nb2O9 (0 ≤ x ≤ 1) and MWCNT/ Ca1 − xBaxBi2Nb2O9 (0 ≤ x ≤ 1) layered composite thick films using microstrip ring resonator overlay method

The microwave dielectric properties of the multiwalled carbon nanotubes (MWCNT) thick film, Ca1 − xBaxBi2Nb2O9 (x = 0, 0.2, 0.4, 0.6, 0.8, and 1) (CBBNO) thick films, and MWCNT/CBBNO layered thick film composites in the 8–18 GHz were determined by …

Autoren:
Varsha D. Phadtare, Vinayak G. Parale, Vijaya R. Puri, Hyung-Ho Park

03.06.2019

Non-intrusive human activity recognition and abnormal behavior detection on elderly people: a review

With the world population aging at a fast rate, ambient assisted living systems focused on elderly people gather more attention. Human activity recognition (HAR) is a component connected to those systems, as it allows identification of the actions …

Autoren:
Athanasios Lentzas, Dimitris Vrakas

03.06.2019

Enhancement of Percolation Threshold by Controlling the Structure of Composites Based on Nanostructured Carbon Filler

The effect of a multicomponent polymer binder composition on the electrical conductivity of composites filled with carbon black (CB) is reported. Composites based on a mixture of polypropylene and styrene-ethylene-butylene-styrene (SEBS) …

Autoren:
I. Burmistrov, N. Gorshkov, S. Anshin, E. Kolesnikov, K. Kuskov, I. Ilinykh, J.-P. Issi, M. Vikulova, D. Kuznetsov

01.06.2019 | Ausgabe 2/2019

Preliminary Study of an Underwater Wireless Sensor Designed for Interrogating the Environmental Condition of Flexible Pipe Annulus

In recent years a number of high-profile cases have shown that flexible pipes are particularly susceptible to the aggressive environments occasionally found in deep-water oil and gas exploration. Ruptures in the outer polymeric layers of the …

Autoren:
Matheus F. Kuhn, Ricardo C. Jacques, Thomas G. R. Clarke

01.06.2019 | Ausgabe 6/2019

Passively Q-switched erbium-doped fiber laser using quantum dots CdSe embedded in polymer film as saturable absorber

We demonstrate a passively Q-switched erbium doped fiber laser (EDFL) based on quantum dots (QD) CdSe as a saturable absorber (SA). The synthesized CdSe powder was embedded into a poly(methyl methacrylate) (PMMA) using emulsion polymerization …

Autoren:
E. I. Ismail, N. A. A. Kadir, A. A. Latiff, H. Arof, S. W. Harun

01.06.2019 | Research and Development | Ausgabe 4/2019

Synthesis of SiC Nanoparticles on Aluminum Metal Using a Dense Plasma Focus

Abstract: Synthesis of silicon carbide (SiC) nanoparticles was carried out using dense plasma focus technology with great potential for future industrial applications. The present work presents the synthesis and coating of aluminum metal with SiC …

Autoren:
S.H. Kenawy, U.M. Rashed

01.06.2019 | Cover Story | Ausgabe 6/2019

Paradigm Shift Enhances the Quality of Diagnostics

Trends such as electrified and autonomous driving are leading to paradigm shifts in the E/E architecture. This and the increasing number of variants of electronic control units is leading to new challenges in vehicle diagnostics. As Softing …

Autor:
Markus Steffelbauer

01.06.2019 | Schwerpunkt | Ausgabe 6/2019

Smart Robots – Smart Ethics?

Brauchen wir für den Umgang mit intelligenten Robotern eine neue Ethik? Nein: Bisherige Überlegungen geben jetzt schon Hinweise, dass wir unsere Geschöpfe und ihre Daten mit festem Griff an die Hand nehmen sollten.

Autor:
Dipl. Phys. Prof. Dr. phil. habil. Klaus Kornwachs

01.06.2019 | Stochastic Systems | Ausgabe 6/2019

Calculating Expected Incomes in Open Markov Networks with Requests of Different Classes and Different Peculiarities

A system of difference-differential equations for the expected incomes of open Markov queueing networks with different peculiarities is considered. The number of network states and also the number of equations in this system are both infinite. The …

Autoren:
M. A. Matalytski, D. Ya. Kopats

01.06.2019 | Control in Technical Systems | Ausgabe 6/2019

Sum Codes with Fixed Values of Multiplicities for Detectable Unidirectional and Asymmetrical Errors for Technical Diagnostics of Discrete Systems

We introduce the concept of sum codes with fixed values of the multiplicities of unidirectional and asymmetrical errors in data vectors. We show that such codes can be constructed on the basis of weighing one of the data vector's bits by a natural …

Autoren:
D. V. Efanov, V. V. Sapozhnikov, Vl. V. Sapozhnikov

01.06.2019 | Intellectual Control Systems, Data Analysis | Ausgabe 6/2019

Awareness and Control Decentralization

The control problem of an organizational system under external uncertainty is considered. The reasonability of using decentralized control depending on the volume of available information about uncertain factors is investigated. The qualitative …

Autoren:
M. A. Gorelov, F. I. Ereshko

01.06.2019 | Control Sciences | Ausgabe 6/2019

Network Information-Computing Support of Automatic Mobile Objects Interaction

The ways and the means are suggested of performing synchronized distributed computing for quick interaction support in a group of automatic mobile objects. The computations are controlled decentralized and are performed on the transmitted messages …

Autor:
G. G. Stetsyura

01.06.2019 | Ausgabe 6/2019

Study of phase-locking of optoelectronic microwave oscillators considering amplitude perturbation

This paper presents a detailed study of the phase-locking phenomenon in single-loop optoelectronic microwave oscillators considering strong radio frequency (RF) signal injection. The analyses are made in terms of the lock-range, beat frequency and …

Autoren:
Abhijit Banerjee, Jayjeet Sarkar, Baidyanath Biswas

01.06.2019

QoS provisioning framework for service-oriented internet of things (IoT)

The proliferation of ubiquitous sensing technology is bringing a rising number of the innovative models that have unique characteristics of the utility computing. These models have offered great opportunities to improve IT industries and business …

Autoren:
Mahmoud M. Badawy, Zainab H. Ali, Hesham A. Ali

01.06.2019

Testing Signals for Electronics: Criteria for Synthesis

Expressions for calculation of optimal criteria for highest information and sensitivity indices and lowest mean square error in test signals for radio-electronic systems (RES), working under influence of the additive Gaussian noise, are derived.

Autoren:
S. Herasimov, V. Pavlii, O. Tymoshchuk, M.Yu. Yakovlev, D.Ye. Khaustov, Ye. Ryzhov, L. Sakovych, Yu.A. Nastishin

01.06.2019

Nonlinear optical and dielectric properties of TiO2 nanoparticles incorporated PEO/PVP blend matrix based multifunctional polymer nanocomposites

Poly(ethylene oxide) (PEO)/poly(vinyl pyrrolidone) (PVP) blend (50/50 wt%) and mixed-phase (anatase and rutile) titanium dioxide (TiO2) nanoparticles are used as organic host matrix and inorganic nanofiller, respectively, for the preparation of …

Autoren:
Ram Jeewan Sengwa, Shobhna Choudhary, Priyanka Dhatarwal

01.06.2019

Performance and stability improvement of single junction a-Si:H solar cell by interface engineering

In this study, the influence of p/i interface on the stability of amorphous silicon solar cells has been investigated by light-induced degradation study. To peruse this study a series of p-i-n solar cells with and without p/i interface buffer …

Autoren:
Gufran Ahmad, Gourab Das, Jatindra Nath Roy

01.06.2019 | Special Issue Paper

Do software and video game firms share location patterns across cities? Evidence from Barcelona, Lyon and Hamburg

The aim of this paper is to analyse common location patterns of software and video game (SVE) industry and the related agglomeration processes with other creative industries in Barcelona, Lyon and Hamburg. SVE is a key industry in developed …

Autoren:
Carles Méndez-Ortega, Josep-Maria Arauzo-Carod

01.06.2019

QOS aware channel and power allocation scheme for D2D enabled cellular networks

Device-to-device (D2D) communication enabled cellular system is capable of enhancing the spectrum utilization and throughput performance of the system. However, D2D users (D2Ds) in close proximity share its radio resources with the cellular users …

Autoren:
Pratap Khuntia, Ranjay Hazra

01.06.2019 | Ausgabe 2/2019

Structural Health Monitoring System for Remote Inspection of Material Failure

A new structural health monitoring (SHM) system is proposed for inspecting the failure characteristics of engineering materials, which are monitored remotely. This system is controlled using electrical devices with wireless networking system. A …

Autoren:
Mitsuhiro Okayasu, Toshiki Yamasaki

01.06.2019 | Hauptbeiträge | Ausgabe 2/2019 Open Access

Karl Polanyi and the Global Network Inspired by His Work

Marguerite Mendell interviewed by Brigitte Aulenbacher and Andreas Novy

Marguerite Mendell is the Director of the Karl Polanyi Institute of Political Economy Montreal. Many awards show the extraordinary relevance of her work: Member, Order of Canada; Officer, Order of Québec; laureate Prix Québec, Marie-Andrée …

Autoren:
Marguerite Mendell, Brigitte Aulenbacher, Andreas Novy

01.06.2019 | Ausgabe 6/2019

Direct digital predistortion technique for the compensation of laser chirp and fiber dispersion in long haul radio over fiber links

Analog Radio-over-Fiber (A-RoF) communication technology constitutes a promising technique for next generation radio access networks thanks to its relatively low bandwidth requirements. Within this context, an efficient predistortion technique is …

Autoren:
Muhammad Usman Hadi, Jacopo Nanni, Jean-Luc Polleux, Pier Andrea Traverso, Giovanni Tartarini

01.06.2019 | Research Article | Ausgabe 2/2019 Open Access

Dielectric relaxation and magneto-electric characteristics of lead-free double perovskite: Sm2NiMnO6

The polycrystalline sample of a double perovskite, Sm2NiMnO6 was synthesized by a solid-state reaction route. From the X-ray structural study, it is found that the structure of the material is monoclinic with lattice parameters: a = 4.1750(63) Å …

Autoren:
Rutuparna Das, R. N. P. Choudhary

31.05.2019

Electromagnetic shielding effectiveness and electrical conductivity of a thin silver layer deposited onto cellulose film via electroless plating

A thin layer of silver was prepared on cellulose film (CF) surface via electroless plating to obtain high electromagnetic shielding effectiveness Ag/cellulose composite layer. The process is simple, efficient and low-cost. The developed film has a …

Autoren:
Guangming Sun, Zhaoqi Wang, Jintian Huang

31.05.2019 | SI: Mobile SE

Evolutionary Fuzzing of Android OS Vendor System Services

Android devices are shipped in several flavors by more than 100 manufacturer partners, which extend the Android “vanilla” OS with new system services, and modify the existing ones. These proprietary extensions expose Android devices to reliability …

Autoren:
Domenico Cotroneo, Antonio Ken Iannillo, Roberto Natella

31.05.2019 | Research Article - Electrical Engineering

An All-Digital Low-Noise Switching DC–DC Buck Converter Based on a Multi-sampling Frequency Delta-Sigma Modulation with Enhanced Light-Load Efficiency

This paper presents an all-digital technique to control DC–DC switching buck converters for noise-sensitive low-power applications. The controller is designed based on a multi-sampling frequency digital delta-sigma modulator, whose sampling …

Autoren:
Hussain A. Alzaher, Mohammad K. Alghamdi

30.05.2019 | Focus

A novel linear SVM-based compressive collaborative spectrum sensing (CCSS) scheme for IoT cognitive 5G network

The cognitive 5G network plays a vital role in enhancing the performance of IoT systems by providing broad services on dynamic situations. Cognitive radio is an emerging trend for supporting multiuser and hybrid communications. New radio …

Autoren:
Sivasankari Jothiraj, Sridevi Balu

30.05.2019

M-Curves path planning model for mobile anchor node and localization of sensor nodes using Dolphin Swarm Algorithm

Location information of a sensor node is the primary concern to process the sensed data in Wireless Sensor Networks (WSNs). The location of the sensor node is used in other domains of sensor network like message routing, node tracking, load …

Autoren:
K. Kannadasan, Damodar Reddy Edla, Mahesh Chowdary Kongara, Venkatanareshbabu Kuppili

30.05.2019 Open Access

Scholars’ Perceptions of Relevance in Bibliography-Based People Recommender System

Collaboration and social networking are increasingly important for academics, yet identifying relevant collaborators requires remarkable effort. While there are various networking services optimized for seeking similarities between the users, the …

Autoren:
Ekaterina Olshannikova, Thomas Olsson, Jukka Huhtamäki, Peng Yao

30.05.2019

Exploring individual and social learning in jackdaws (Corvus monedula)

Information about novel environments or foods can be gathered via individual or social learning. Whereas individual learning is assumed to be more costly and less effective than social learning, it also yields more detailed information. Juveniles …

Autoren:
Ira G. Federspiel, M. Boeckle, A. M. P. von Bayern, N. J. Emery

30.05.2019

Assessing the Reliability of Successive Approximate Computing Algorithms under Fault Injection

This work presents two fault injection and dependability test methodologies exploring the fault tolerance of successive approximation algorithms. This type of approximate computing algorithm can present an inherent fault tolerance, converging to a …

Autoren:
Gennaro S. Rodrigues, Ádria Barros de Oliveira, Fernanda Lima Kastensmidt, Vincent Pouget, Alberto Bosio

30.05.2019 | Original Paper

Snow cover phenology is the main driver of foraging habitat selection for a high-alpine passerine during breeding: implications for species persistence in the face of climate change

High-alpine ecosystems are strongly seasonal and adverse environments. In these ecosystems, the brevity of optimal breeding conditions means species must efficiently track spatiotemporal variations in resources in order to synchronise their …

Autoren:
Jaime Resano-Mayor, Fränzi Korner-Nievergelt, Sergio Vignali, Nathan Horrenberger, Arnaud G. Barras, Veronika Braunisch, Claire A. Pernollet, Raphaël Arlettaz

29.05.2019

Betting with house money: reverse line movement based strategies in college football totals markets

This article tests the efficient market hypothesis and the profitability of a simple betting strategies in NCAA college football. We examine all games that have a total, or over/under, from September 2005 through January 2016. We investigate …

Autoren:
James Francisco, Evan Moore

29.05.2019

Stochastic Cooperative Communications Using a Geometrical Probability Approach for Wireless Networks

In cooperative communications, signals are relayed to increase transmission range and user throughput. However, selection and coordination of relay stations (RSs) usually require channel state information (CSI) and control signaling, resulting in …

Autoren:
Ruonan Zhang, Xiaoshen Song, Jianping Pan, Jiajia Liu

29.05.2019

Knowledge-based service economy and firm entry: an alternative to the knowledge spillover theory of entrepreneurship

Recent research on the determinants of high-tech business entry increasingly relies on the knowledge spillover theory of entrepreneurship (KTSE), which contends that employees-turned-entrepreneurs start new companies in order to commercialize …

Autoren:
Alexandra Tsvetkova, Mark Partridge

29.05.2019

Joint Downlink and Uplink Edge Computing Offloading in Ultra-Dense HetNets

The deployment of ultra-dense heterogeneous networks (HetNets) are envisioned as the essentials to embrace of intelligent applications for the next-generation wireless networks. For ultra-dense HetNets, the small scale heterogeneous edge servers …

Autoren:
Jie Zheng, Ling Gao, Hai Wang, Xiaoya Li, Pengfei Xu, Lin Wang, Bo Jiang, Xudong Yang

28.05.2019

Interference mitigation in heterogeneous networks with simple dirty paper coding

In heterogeneous networks where macro cells and metro cells use the same frequency band to communicate with their respective users, the major problem limiting performance is the interference caused by macro cells to metro cells. The information …

Autoren:
Kiran M. Rege, Krishna Balachandran, Joseph H. Kang, Kemal Karakayali

28.05.2019

Automatic Seeded Region Growing (ASRG) Using Genetic Algorithm for Brain MRI Segmentation

Segmentation images into several parts are an important task in many image processing and computer image applications. The purpose of dividing a photo into several parts involves segmentation the image into different regions based on the criteria …

Autoren:
Ramin Dehdasht-Heydari, Sadegh Gholami

28.05.2019

Space Occupancy Representation Based on A Bayesian Model for Unmanned Aerial Vehicles

Collision avoidance for unmanned aerial vehicles is a main task for autonomous aerial systems. One of the major challenges facing such technology is the existence of a high level of uncertainty in moving objects. In this research study, we chose …

Autoren:
Tarek Elderini, Naima Kaabouch, Jeremiah Neubert

28.05.2019

Performance optimization of tethered balloon technology for public safety and emergency communications

This paper investigates the potential of a tethered balloon network architecture deployed as part of public safety networks and emergency communications. Tethered balloon technology has been evolving as a powerful and promising technology for …

Autoren:
S. H. Alsamhi, F. A. Almalki, Ou Ma, M. S. Ansari, M. Angelides

28.05.2019

Effects of sputtering power of SnO2 electron selective layer on perovskite solar cells

Efficient perovskite solar cell (PSC) with SnO2 electron selective layer (ESL) prepared by radio frequency magnetron sputtering method at room-temperature has been realized. In this work, we systematically discussed the effect of sputtering power …

Autoren:
Hong Tao, Haoning Wang, Yuchen Bai, Hao Long, Hongyang Zhao, Qiuming Fu, Zhibin Ma

27.05.2019

Interference and Resource management strategy for handover in femtocells

Interference in femtocells due to neighboring femtocells and macrocells is a major issue of two-tier networks. Handover should be made to reduce interference, if and only if, when resources are available. Otherwise, it will further degrade network …

Autoren:
Madiha Rasheed, Sana Ajmal

27.05.2019

Distributed Dynamic Backhauling in Aerial Heterogeneous Networks

Congestion management of urban mobile network under heavy capacity and coverage demand by the moving dense users has become a denotable challenge to the Network Service Providers (NSPs). We have previously termed the ‘capacity in motion’ demand as …

Autoren:
Purnima Lala Mehta, Ramjee Prasad

27.05.2019

Enhanced flexibility and environmental durability of copper electrode produced with conductive ink containing silane coupling agents with diamine and ether spacer

Cu-based conductive inks are more cost effective than silver-based ones for flexible electronics. However, it is challenging to simultaneously ensure the mechanical flexibility, environmental oxidation durability, and low resistance of the …

Autoren:
Shintaro Sakurai, Takuma Uda, Hideya Kawasaki

27.05.2019 | Technical Paper

Performance evaluation of spherical robot for amphibious applications

Aiming at exploration tasks in complex amphibious environments, our previous researches proposed and developed an amphibious spherical robot, and the robot is capable of motion on land and swim in underwater. In this paper, focus on robotic …

Autoren:
Yanlin He, Xu Zhang, Mingli Dong, Guangkai Sun, Mingxin Yu, Lianqing Zhu

25.05.2019 | Technical Paper

Characterization of InP-based pseudomorphic HEMT with T-gate

This paper proposes two structures of InAlAs/InGaAs-based pseudomorphic high electron mobility transistor (PHEMT): one with rectangular-gate and another with T-gate. Both the proposed PHEMTs consist of an In0.52Al0.48As supply/barrier layer and …

Autoren:
Shashank Kumar Dubey, Krishnpriya Sinha, Pawan Kumar Sahu, Ritesh Ranjan, Atandra Pal, Aminul Islam

25.05.2019 | Original Paper

A survey on role of photonic technologies in 5G communication systems

A new generation of mobile communications has been evolving for every 10 years, keeping in mind the enormous data traffic, huge capacity requirements, excellent quality of service with minimal latency; there is a shift in paradigm toward the …

Autoren:
Rohan Katti, Shanthi Prince

25.05.2019

Deep learning-based breast cancer classification through medical imaging modalities: state of the art and research challenges

Breast cancer is a common and fatal disease among women worldwide. Therefore, the early and precise diagnosis of breast cancer plays a pivotal role to improve the prognosis of patients with this disease. Several studies have developed automated …

Autoren:
Ghulam Murtaza, Liyana Shuib, Ainuddin Wahid Abdul Wahab, Ghulam Mujtaba, Ghulam Mujtaba, Henry Friday Nweke, Mohammed Ali Al-garadi, Fariha Zulfiqar, Ghulam Raza, Nor Aniza Azmi

24.05.2019

Performance Enhancement with Improved Security an Approach for Formulating RFID as an Itinerary in Promulgating Succour for Object Detection

In real time process, tracking of objects allows an agency to record, track, and examine an object and these features enhance the public service through better on-time performance and quicker response time for emergency. Radio-frequency …

Autoren:
M. Thurai Pandian, R. Sukumar

23.05.2019 | Research Article - Computer Engineering and Computer Science

A New Mobility Control Approach for Improved Route Availability in Mobile Ad Hoc Networks

Efficient routing is one of the key challenges in mobile ad hoc networks due to stringent requirements and deployment demands in many safety-critical application contexts such as disaster rescue operations and battlefields. In most cases, the …

Autoren:
Bata Krishna Tripathy, Swagat Kumar Jena, Padmalochan Bera, Satyabrata Das

23.05.2019 | Original Paper

The impact of English Premier League broadcasts on Danish spectator demand: a small league perspective

The effect of live transmissions of football matches on spectator demand in European football has been extensively studied over the years, although with little focus on the smaller leagues. By deploying robust panel data regression models on …

Autoren:
Christian Gjersing Nielsen, Rasmus K. Storm, Tor Georg Jakobsen

23.05.2019

Analysis of macro diversity based on maximum ratio combining in long range ALOHA networks

In low power wide area networks, packets transmitted by a device are not addressed to a specific base station: any surrounding station can receive them. This opens the way to several macro diversity schemes. As opposed to independent decoding of …

Autoren:
Qipeng Song, Loutfi Nuaymi, Xavier Lagrange

23.05.2019

Recent Studies on Chicken Swarm Optimization algorithm: a review (2014–2018)

Solving a complex optimization problem in a limited timeframe is a tedious task. Conventional gradient-based optimization algorithms have their limitations in solving complex problems such as unit commitment, microgrid planning, vehicle routing …

Autoren:
Sanchari Deb, Xiao-Zhi Gao, Kari Tammi, Karuna Kalita, Pinakeswar Mahanta

23.05.2019 | Original Article | Ausgabe 6/2019

Deep long short-term memory networks-based automatic recognition of six different digital modulation types under varying noise conditions

In this paper, a new method based on deep learning has been proposed in order to recognize noise-digital modulation signals at varying noise levels automatically. The 8-bit data from six different modulations have been obtained by adding noise …

Autoren:
Nihat Daldal, Özal Yıldırım, Kemal Polat

23.05.2019

Study of single-cell massive MIMO systems with channel aging and prediction

In this paper we consider a single-cell massive multiple-input-multiple-output scenario, where the number of base station (BS) antennas is larger than the number of single antenna user terminals (UTs). We study and investigate common impairment …

Autoren:
Talha Younas, Jiandong Li, Muluneh Mekonnen Tulu, Hafiz Mudassir Munir, Mahrukh Liaqat

23.05.2019

Detecting and Mitigating Selfish Primary Users in Cognitive Radio

Nowadays, the cognitive radio has become a promising solution for spectrum shortage disputes and to achieve dynamic spectrum access. This study focuses on two things: The first aim of this study is the integrity check to be carried when accepting …

Autoren:
Avila Jayapalan, Prem Savarinathan, Padmapriya Praveenkumar, Thenmozhi Karuppasamy

23.05.2019 | Ausgabe 3/2019

Problems Related to Estimating the Coefficients of Exact Penalty Functions

New approaches to estimating the coefficients of exact penalty functions for constrained optimization problems are considered. The results of computational experiments using simplified procedures for estimating coefficients in solving some classes …

Autoren:
Yu. P. Laptin, T. O. Bardadym

23.05.2019 | CYBERNETICS | Ausgabe 3/2019

Supersingular Twisted Edwards Curves Over Prime Fields. I. Supersingular Twisted Edwards Curves with j-Invariants Equal to Zero and 123

An analysis of existence conditions of supersingular twisted Edwards curves over a prime field is given. Theorems on the conditions of existence of supersingular curves with j-invariants equal to zero and 123 in different classes of curves are …

Autoren:
A. V. Bessalov, L. V. Kovalchuk

22.05.2019 | S.I. : Religion in Robotics

Blessing Robot BlessU2: A Discursive Design Study to Understand the Implications of Social Robots in Religious Contexts

As robots are continuing to enter social spaces such as religion and spirituality, the timing is right to determine desirable scenarios and design factors appropriate for the deployment of technology in these contexts. We present two studies that …

Autoren:
Diana Löffler, Jörn Hurtienne, Ilona Nord

22.05.2019

A robust pre-coding and hybrid equalization assisted MIMO-MU visible light communication system for QoS centric indoor communication

The exponential rise in wireless communication demands and allied applications have revitalized academia-industries to develop an efficient and potential solution. Furthermore, the high-pace increasing scarcity of radio spectrum has also alarmed …

Autoren:
Tanweer Ali, Warsha Balani

22.05.2019 | Article

In situ SEM-DIC technique and its application to characterize the high-temperature fatigue crack closure effect

In situ high-temperature (maximum: 650°C) experiments for fatigue crack growth on single edge-notched GH4169 superalloy specimens have been performed in scanning electron microscopy (SEM). In order to investigate the crack closure behavior …

Autoren:
YuanJie Yin, HuiMin Xie, Wei He

22.05.2019

Multi-robot online sensing strategies for the construction of communication maps

This paper tackles the problem of constructing a communication map of a known environment using multiple robots. A communication map encodes information on whether two robots can communicate when they are at two arbitrary locations and plays a …

Autoren:
Alberto Quattrini Li, Phani Krishna Penumarthi, Jacopo Banfi, Nicola Basilico, Jason M. O’Kane, Ioannis Rekleitis, Srihari Nelakuditi, Francesco Amigoni

22.05.2019 | Original Article

An energy-efficient stable clustering approach using fuzzy-enhanced flower pollination algorithm for WSNs

Due to advancement in the technology and need for machine-to-machine connectivity, wireless sensor network (WSN) overplays the role compared to other wireless networks. In this context, different applications based on WSNs need to be executed …

Autoren:
Nitin Mittal, Urvinder Singh, Rohit Salgotra, Manu Bansal

22.05.2019 | Focus

On construction of the air pollution monitoring service with a hybrid database converter

Air pollution has a severe impact on human health, pollution harms human health, and people start to pay attention to how to use the monitoring system in real-time recording for analysis. To maintain smooth monitoring and analysis, we have to …

Autoren:
Chao-Tung Yang, Shuo-Tsung Chen, Jung-Chun Liu, Pei-Lun Sun, Neil Y. Yen

22.05.2019

LINDASearch: a faceted search system for linked open datasets

The importance of Linked Data lies on the fact that its practices and principles have been adopted by an increasing number of data providers, resulting in the creation of a data space on the Web containing billions of RDF Triples and accessible …

Autoren:
José Luis Sánchez-Cervantes, Luis Omar Colombo-Mendoza, Giner Alor-Hernández, Jorge Luis García-Alcaráz, José María Álvarez-Rodríguez, Alejandro Rodríguez-González

22.05.2019

Joint QoS-control and handover optimization in backhaul aware SDN-based LTE networks

Future cellular networks will be dense and require key traffic management technologies for fine-grained network control. The problem gets more complicated in the presence of different network segments with bottleneck links limiting the desired …

Autoren:
Furqan Hameed Khan, Marius Portmann

22.05.2019 Open Access

Hybrid Radio Resource Management with Co-scheduling for Relay Extended OFDMA Networks

In orthogonal frequency division multiple access networks buffer aided non-transparent in-band half duplex decode and forward relay nodes aim to improve coverage and capacity under fairness considerations. Existing centralized radio resource …

Autoren:
Paul Arnold, Veselin Rakocevic, Joachim Habermann

22.05.2019

Resource allocation in future HetRAT networks: a general framework

Aggregation of resources in space, spectrum, and so on, is the fundamental idea behind many technology building blocks of 5G networks, such as massive multi-input multi-output and carrier aggregation, among others. In this respect, another …

Autoren:
Mohammad Reza Heidarpour, Mohammad Hossein Manshaei

21.05.2019

A review on rendezvous based data acquisition methods in wireless sensor networks with mobile sink

Solutions for energy hole problem in wireless sensor networks (WSNs) have been excessively explored using mobile sink (MS). Although, MS provides a considerable amount of energy saving and extends network lifetime. However, MS introduces varying …

Autoren:
Anjula Mehto, Shashikala Tapaswi, K. K. Pattanaik

21.05.2019

Research on Adaptive SVR Indoor Location Based on GA Optimization

Indoor positioning based on the received signal strength index of ZigBee has received more and more attention due to its low cost, low hardware power consumption and easy implementation. However, due to the existence of multi-path and shadow …

Autoren:
Xuming Liu, Wei Wang, Zhihui Guo, Cunhua Wang, Chen Tu

21.05.2019 Open Access

Road-Aware Estimation Model for Path Duration in Internet of Vehicles (IoV)

In Internet of Vehicles (IoV), numerous routing metrics have been used to assess the performance of routing protocols such as, packet delivery ratio, throughput, end-to-end delay and path duration. Path duration is an influential design parameter …

Autoren:
Muhammad Tahir Abbas, Afaq Muhammad, Wang-Cheol Song

21.05.2019

Reliable Routing Algorithm Based on Clustering and Mobile Sink in Wireless Sensor Networks

Given the limited battery energy of the sensor networks, energy efficiency is regarded as one of the most crucial issues for WSNs. In WSNs with a fixed sink, since the nodes near the sink share multi-hop routes and data and integrated towards the …

Autoren:
Shayesteh Tabatabaei, Amir Mohsen Rigi

21.05.2019

Countermeasure with Primary User Emulation Attack in Cognitive Radio Networks

One of the most challenging issues in Cognitive Radio Networks (CRN) is to detect Primary User Emulation Attack (PUEA). In the absence of Primary Users (PU), the attackers mimic PUs’ signal characteristics to fool legitimate Secondary Users (SU) …

Autoren:
Seyed Abdolazim Vaziri Yazdi, Mahdieh Ghazvini

21.05.2019

A Novel Approach to Optimize Power Consumption in Orchard WSN: Efficient Opportunistic Routing

In orchard wireless sensor networks (WSN) application, the network link quality is unstable due to the shielding effect caused by the growth of branches and leaves. Aiming at the energy constrains of orchard WSN, an expecting lowest-residue-energy …

Autoren:
Saimin Zhang, Mojtaba Madadkhani, Mehdi Shafieezadeh, Abbas Mirzaei

21.05.2019 | ORIGINAL ARTICLE

A SysML representation of the wireless factory work cell

Enabling real-time observation and control by modeling significant architecture, components, and information flows

A fourth industrial revolution, occurring in global manufacturing, provides a vision of future manufacturing systems that incorporate highly dynamic physical systems, robust and responsive communications systems, and computing paradigms to …

Autoren:
Richard Candell, Mohamed Kashef, Yongkang Liu, Sebti Foufou

20.05.2019 | Focus

A novel Neyman–Pearson criterion-based adaptive neuro-fuzzy inference system (NPC-ANFIS) model for security threats detection in cognitive radio networks

The development of new technologies in wireless domain provides better service to the users. The demand in wireless network services increases every day, and this leads to spectrum scarcity. Cognitive radio network is a solution for ideal spectrum …

Autoren:
R. Neelaveni, B. Sridevi

20.05.2019

Analysis of Traffic Impact on Proposed Congestion Control Scheme in AODV

Congestion is a noteworthy problem in Mobile Ad hoc Network, which occurs when number of users increases and a node carries data more than its capacity. In this paper, a congestion control mechanism is suggested for the performance improvement of …

Autoren:
Navneet Kaur, Rakesh Singhai

20.05.2019

Performance of energy-efficient cooperative cognitive radio system over erroneous Nakagami-m and Weibull fading channels

Cognitive radio (CR) is developed as one of the important techniques to improve the utilization of the radio spectrum. A CR node shares the radio spectrum with a licensed primary user opportunistically. In this paper, we study the performance of …

Autoren:
Kiran Kumar Godugu, Ashok Kumar Nallagonda, Srinivas Nallagonda

20.05.2019

Deterministic pilot design for structured sparse channel estimation in MISO systems

To reduce the pilot overhead, compressive sensing techniques have been widely adopted for sparse channel estimation. In this paper, we explore the spatial common sparsity across different channels and investigate the deterministic pilot design …

Autoren:
Jun Cai, Xueyun He, Hong Wang, Rongfang Song

20.05.2019

Downlink data rate, energy and spectral efficiency distribution in heterogeneous networks with cell-edge located small cells

In this paper, the probability distributions of per user downlink data rate, spectral efficiency (SE) and energy efficiency (EE) are analytically derived for a heterogeneous network model with cell-edge located small cells. The high accuracies of …

Autoren:
Güven Yenihayat, Ezhan Karaşan

20.05.2019 | Ausgabe 12/2019

One step preparation of copper–silver self-catalyzed hybrid conductive ink with reduced sintering temperature for flexible electronics

Copper–silver hybrid conductive inks can combine the advantages of lower cost, better conductivity and long-term stability of the copper or silver ink, which have attracted wide research interest in the development of materials for flexible …

Autoren:
Wendong Yang, Changhai Wang, Valeria Arrighi
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