OTDR Integrated in OLT PON Port by Yuehua Ou, Yan Ren

“…Along with the propulsion of the“broadband China”strategy,FTTx has been deployed massively,therefore there are more and more requirements on detecting optic fiber faults, solutions with low cost are needed to detect fiber faults and improve the efficiency of PON operation and maintenance. …”
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Space localization algorithm based RSSI in wireless sensor networks by ZHOU Yan, LI Hai-cheng

“…,propagation losses produced location errors in the positioning process by RSSI technology.Through analyzing error range in 3D space,a new spatial locating algorithm ERSS based on RSSI was proposed.The ERSS algorithm had the advantages: locating calculation simplicity,no extra communication cost on the locating process,and no hardware expansion required.Simulation results show ERSS algorithm achievs noticeable improvement over RSSI algorithm on distance locating accuracy and responding time,and it is suitable to be applied on the environment of wireless sensor network nodes with low cost and performance of hardware.…”
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Comparison and analysis about 5G indoor new coverage solutions by Yanlei CHEN, Junxian MENG, Wei LIU, Xun WANG

“…5G has entered the stage of scale deployment, and indoor is one of the key scenes.With the evolution of new technology, indoor new coverage solutions emerge in endlessly, such as RRU/pRRU+RF power amplifier, multi-channel joint transceiver technology, frequency conversion system, etc.Compared with the traditional compartment coverage scheme, new coverage solutions have the characteristics of low cost and good performance.The technical principle, basic performance, key problems and industrial status of the new coverage solutions were innovatively and comprehensively analyzed, and the corresponding target scenarios and deployment suggestions were summarized through actual pilot verification.…”
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Real-time controller design and onboard attitude estimation of a quadrotor with collision safety through ultrasonic sensors by Rumshaa Yunus

“…Stable flight is a challenge for quadrotors due to low-cost sensors and indoor flight safety constraints add to their complexity. …”
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Vehicle classification algorithm based on binary proximity sensors and neural networks by ZHANG Wei, TAN Guo-zhen, DING Nan, SHANG Yao

“…In this algorithm, use the low cost and high sensitive magnetic sensors to de- tect the magnetic field distortion when vehicle pass by them and estimate vehicle length with the geometrical characteris- tics of binary proximity networks, and finally classify vehicles via neural networks. …”
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Superposition based direct downlink channel state information feedback method by XU Dao-feng 1, HUANG Yong-ming1, YANG Lv-xi1

“…A low cost, real-time feedback method for downlink channel state information （DL-CSI） was proposed. …”
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Novel open-WDM technical architecture for 5G fronthaul network by Dong WANG, Han LI, Dechao ZHANG, Qian CAI, Jiang SUN, Yang ZHAO, Yunbo LI, Liuyan HAN

“…C-RAN may be a promising way for 5G fronthaul network associated with significant changes in 5G fronthaul architecture.Based on the analysis of existing schemes such as optical fiber direct connection,passive WDM and active WDM/OTN,open wavelength division multiplexing (open-WDM) system was proposed to satisfy the new requirements of 5G fronthaul network.In the open-WDM system,WDM technology is used to save optical fiber resource and the semi-active architecture can achieve flexible deployment.The low-cost management and control technology was further applied to perform efficiently network operation.…”
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Reliability and Validity of the ActivForce Digital Dynamometer in Assessing Shoulder Muscle Force across Different User Experience Levels by Christos Karagiannopoulos, Sean Griech, Brian Leggin

“…The ActivForce (AF) digital dynamometer is a new low-cost HHD with unknown psychometric properties, and its utilization may benefit clinical practice…”
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Application of BeiDou RNSS timing technology in smart grid lightning locating system by Hao ZHANG, Hongzhen YANG, Weiping SHAO, Jiming YAO

“…The smart grid lightning location system is an important power service,and its lightning location accuracy largely depends on the accuracy of time synchronization.Three kinds of BeiDou timing methods were studied and compared,and the RNSS timing method was found to be most suitable for lightning location systems.Furthermore,the principle and characteristics of RNSS timing were studied,and a low-cost user terminal timing hardware and software architecture and algorithm were proposed.The Kalman filter-based BeiDou second pulse signal was used to calibrate the user clock and adjust the voltage through the PID algorithm.The temperature-controlled crystal oscillator made the deviation between the user terminal time and the GNSS time below 100 ns at any time to meet the accuracy requirements of the lightning positioning system.…”
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Load Balancing Routing Algorithm Based on Genetic Optimization and Artificial Bee Colony in LEO Satellite Network by Xia DENG, Miaomiao HAO, Wucheng LIN

“…The LEO satellite network become a powerful complement to the terrestrial network as it shows the advantage of low latency, low cost, low loss rate and global coverage.However, due to the uneven distribution of users and the variation of network traffic over time, some links may be congested and unbalanced.A load balancing routing algorithm based on genetic optimization and artificial bee colony in LEO satellite networks(GABC) was proposed, which combined genetic algorithm with artificial bee colony algorithm to avoid local optimization.Experimental results showed that compared with the shortest path routing and LBRA-CP algorithm, the proposed algorithm has higher data transmission rate and throughput with lower delay and overhead ratio.…”
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Research on multi-party security collaborative linear regression for computing power networks by PAN Jie, HOU Huifang, CHEN Xi, XUE Zhao, XU Liankun

“…The scheme allowed multiple users to achieve secure joint training in a computing power network using sensitive data to build a linear regression model. The scheme adopts low-cost blinding method and homomorphic encryption technology to encrypt user sensitive data to protect the security of sensitive data.…”
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Low-power internet of underwater things: vision and key technologies by Yang LIU, Cuican LI, Mugen PENG

“…With the explosion of underwater sensing devices and the pursuit of energy conservation, the concept of low-power internet of underwater things has been put forward.Inspired by RF-based backscatter networks, the low-power internet of underwater things architecture uses underwater acoustic backscatter technology to realize the low-power and low-cost communication of underwater sensor nodes, which has a wide application prospect in underwater fields such as the long-term underwater detection.Firstly, the principle and architecture of low-power internet of underwater things was introduced.Then, the key technologies faced by the architecture were proposed and analyzed, such as perception, communication, networking, resource allocation, security and so on.Finally, the future research directions of low-power internet of underwater things were discussed.…”
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Calculation and Analysis of Power Loss in the Drive Axle of High-power Loaders by Chen Sujiao, Zhang Senbo, Zhang Hanyu, Liang Xinghua, Qian Xu, Liu Chunbao, Xu Wenbo

“…The proposed modeling method and results provide important reference for the rapid and low-cost development of new generation drive axle products.…”
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Roles of Alkaloids from Medicinal Plants in the Management of Diabetes Mellitus by Bikash Adhikari

“…Research activities on them have got attention throughout the world in the present days in search of low-cost and safe compounds for the management of diabetes. …”
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The German Long-Distance Bus Market — Returning to its Original Level in the Medium Term? by David Ennen, Janina Scheelhaase, Sven Maertens

“…Since its liberalisation in 2013, long-distance bus transport has not only provided low-cost mobility, it has also contributed to income and employment in Germany. …”
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Adsorption of Cationic and Anionic Dyes onto Commercial Kaolin by D. Ziólkowska, A. Shyichuk, I. Karwasz, M. Witkowska

“…Commercial kaolin from a Polish deposit has been examined as a low-cost adsorbent for effluent remediation using five cationic and five anionic industrial dyes. …”
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Markov prediction based handover in dynamic ultra dense network by Qingmin MENG, Yuanyuan ZHAO, Wenjing YUE, Yulong ZOU, Xiaoming WANG

“…In order to solve the problem of the communication and computational problems of large-scale machine communication in an ultra-dense cellular network,a Markov prediction based handover scheme (MPHS) was proposed.Firstly,a kind of heterogeneous network design with semi-structure and central control was considered which contains the densely deployed virtual nodes and thus realized a low cost and efficient coverage.The network can dynamically adjust the access point according to the user's mobility and network traffic.Secondly,a Markov model was constructed,and the idea of load-aware was introduced.By weighing the signal quality and the cell load,the user's next optimal access point was effectively predicted.The simulation results show the feasibility and effectiveness of the proposed scheme for cell handover predicting.…”
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Adsorption Studies for Arsenic Removal Using Activated Moringa oleifera by T. Sumathi, G. Alagumuthu

“…A new low cost adsorbent, activated Moringa oleifera has been developed for aqueous arsenic removal. …”
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Ambient backscatter communications technology for batteryless IoT by Qin TAO, Caijun ZHONG, Zhaoyang ZHANG

“…As one of the core enabling technologies supporting the batteryless Internet of things(IoT),ambient backscattering communication technology has the characteristics of low power consumption and low cost.Firstly,the basic concept of ambient backscattering communication technology and the research status at home and abroad were introduced.Then,based on an in-depth analysis of the differences between ambient backscattering communication technology and RFID technology,the technical difficulties faced by the ambient backscattering communication system were described in detail,including large detection delay,high bit error rate,low transmission rate and short communication distance.In addition,a series of potential solutions to the challenges were proposed.Finally,the future research directions of ambient backscattering communication were prospected.…”
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Theoretical Study and Application of the P-S-N Curve of Chain Plate Parts by Sun Wen, Ren Tao, Kang Xiaoqing, Wang Sanmin

“…Due to such good characteristics as time-saving and low cost by the avoided fatigue test,the theoretical P-S-N curve of the chain plate is convenient for application to engineering. …”
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