Performance analysis of two-way relay cooperation underlay cognitive radio networks based on WIPT by Jisheng XU, Fanzi ZENG, Kang LI, Yongfeng LI

“…The two-way relay cooperation for underlay cognitive radio networks based on WIPT was presented,where secondary system adopted the two-way relay cooperative transmission.First,the relay adopted a power splitting protocol to harvest energy and to decode information transmitted by secondary users,then the relay forwarded information to two secondary users by using the harvested energy.Subsequently the exact expression of the outage probability,the ergodic capacity and energy efficiency of the secondary user system were derived.Finally,numerical simulation discusses the impact on the system performance with regard to secondary transmission power.The results reveal that the two-way relay cooperation effectively reduces the outage probability of data transmission.The capacity and energy efficiency of the system reaches optimal level when the power allocation coefficient is 0.5.…”
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Trends and enabling technologies on high-speed metro and short-reach optical transmission systems by Lei ZHANG, Yixiao ZHU, Fan ZHANG, Zhangyuan CHEN

“…The optical fiber communication network is the important infrastructure for the modern information society.Thanks to the reduction of fiber loss,the improvement of transceiver devices by electro-optical-electrical conversion,the development of modulation technology and the introduction of digital signal processing,the capacity of optical fiber transmission has been greatly improved.In recent years,due to the large capacity demand of data-centers and the next-generation wireless communication,metro and short-range transmission scenarios below 100 km have attracted lots of attention based on direct detection.The historical evolution of optical fiber communication systems was firstly reviewed,then the limiting factors in the direct detection system were analyzed.Furthermore,the principle and system configuration of one-dimensional to four-dimensional self-coherent technology were introduced,and finally,the low-cost evolution trend of the optical coherent transmission system was prospected.…”
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Are humans by birth as wicked as the Heidelberg Catechism (3-11) holds? A dialogue between theology and modern sciences by P. Lampe

“…However, humans encounter limits of their capacity for altruism especially when dealing with outsiders not belonging to their own group. …”
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Adsorption performance of hydrophobically modified silica gel for the vapors of -hexane and water by Weiqiu Huang, Jixing Xu, Bo Tang, Hongning Wang, Xiaobin Tan, Aihua Lv

“…Then, the adsorption capacities of SG-1 and SG-2 to the n -hexane vapor and water vapor, respectively, were investigated and compared with the capacities of activated carbon and SG-3 (hydrophobically modified using the same composite modifier without microwave exposure). …”
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Research of channel quantization and feedback strategies based on multiuser diversity MIMO-OFDM systems by LIANG Xue-jun, ZHU Guang-xi, SU Gang, WANG De-sheng

“…Firstly, a quantization method was proposed by quantized value indicating the modulation level instead of the full values of channel quality information（CQI） and the achievable average spectrum efficiency showed no loss compared with perfect case.Secondly, employment of the integrated design that combined with opportunistic, best, and hybrid feedback scheme was considered and the close-form expression of average spectrum efficiency was deduced in various case.Finally, the calculation of optimal feedback parameters was confirmed from two aspects of feedback channel capacity and capacity relative loss.Extensive simulations were presented to evaluate these proposed strategies.The results match with the numeral analysis very well.The proposed partial feedback schemes can reduce the feedback load greatly with the same system capability, only if the feedback parameters be chosen properly.Wherein, the hybrid feedback combined with quantization performs best and provides the instruction to design the channel feedback of practical systems.…”
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Capacitated Multiple Allocation Hub Covering Flow Problem by Orhan Feyzioğlu, Nazmi Sener

“…Another important issue is the consideration of capacity restrictions imposedon network links and opened hubs. …”
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Thermohydrodynamics Analysis of the Slope-platform Pad Thrust Bearing by Zhang Wentao, Zhang Songlin, Cheng Baixin

“…There is no longer a linear relationship between the axial bearing capacity and speed when considering the coupling heat transfer.…”
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Generative steganography method based on auto-generation of contours by Zhili ZHOU, Meimin WANG, Gaobo YANG, Jianyu ZHU, Xingming SUN

“…To address the problems of limited hiding capacity and inaccurate information extraction in the existing generative steganography methods, a novel generative steganography method was proposed based on auto-generation of contours, which consisted of two main stages, such as the contour generation driven by secret information and the contour-to-image transformation.Firstly, the contour generation model was built based on long short term memory (LSTM) for secret information-driven auto-generation of object contours.Then, a contour-to-image reversible transformation model was constructed based on pix2pix network to obtain the stego-image, and the model also supported the reversible transformations from the stego-image to contours for secret information extraction.Experimental results demonstrate that the proposed method not only achieves high hiding capacity and accurate information extraction simultaneously, but also effectively resists the attacks by steganalysis tools.It performs much better than the state-of-the-art generative steganographic methods.…”
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Energy Valuation Methods for Biofuels in South Florida: Introduction to Life Cycle Assessment and Emergy Approaches by J. Van Treese, II, Edward A. Hanlon, N. Y. Amponsah, J. L. Izursa, J. C. Capece

“…L. Izursa, and J. C. Capece, and published by the UF Department of Soil and Water Science, March 2013. …”
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Adsorption Equilibrium of a Herbicide (Pendimethalin) onto Natural Clay by M.S. El-Geundi, T.E. Farrag, H.M. Abd El-Ghany

“…The results indicate that the maximum adsorption capacity (q max ) at an acidic pH value (3.44) was approximately double that observed at an alkaline pH value (9.62). …”
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OPTIMIZATION DESIGN OF UNIVERSAL COUPLING FORK BASED ON PARTICLE SWARM ALGORITHM by TANG Shu, LIU Yuan, YU XiangDong, SHI GuanLin

“…In order to improve the bearing capacity of ship-mounted universal coupling,a certain type of cross-shaft universal coupling fork was taken as the research object,and the analysis process of the fork was established by Abaqus. …”
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Structural Stress Analysis of the Core Component of Harmonic Reducer by Zhang Lei, Yang Weichao, Jiang Qianqian, Wang Cheng, Huang Wei

“…Aiming at the design problem of high lifespan and high bearing capacity of flexspline,taking the fillets and generator as the research object,parametric model are performed in ANSYS by response surface method and the central composite design method is used for sampling. …”
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Application of Kinetic Models to the Sorption of Copper(II) on to Peat by Y.S. Ho, G. McKay

“…The rate constant, the equilibrium sorption capacity and the initial sorption rate were calculated. …”
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ANALYSIS OF THE INFLUENCE OF STIFFENER TYPE AND MANUFACTURING PROCESS ON MECHANICAL BEHAVIOR OF TITANIUM ALLOY STIFFENED PANEL UNDER AXIAL COMPRESSION by WANG ZhaoHui, MA YuE

“…Different manufacturing processes have great influence on the failure load and post-buckling load capacity, among which the post-buckling load capacity of welded stiffened plate is the largest one. …”
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Design of Optical Wireless Networks with Fair Traffic Flows by Artur Tomaszewski

“…The particular focus is on modelling the effect of elastic traffic flows slowing down in response to the decrease of the optical transmission systems’ capacity at bad weather conditions. A mathematical programming model of the network design problem is presented that assumes that the packet rates of elastic traffic flows decrease fairly. …”
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Exploring the Potential of Research–Practice Partnerships to Support State Education Leaders as Agents of Change by Hannah Goldstein, Hayley Weddle

“…Although state education agency leaders are well positioned to advance change, capacity building at this level of the education system has been traditionally limited. …”
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Automatic prediction for IP backbone network traffic by Xuan WEI, Ke RUAN, Xiaoying HUANG, Xun CHEN, Cancan HUANG

“…Efficient and reliable network traffic prediction is the basis of network planning and capacity expansion construction.Currently,there is no integral theoretical model to describe internet traffic.Most of the industry designs simplified and operable prediction models.Firstly,according to the characteristics of China Telecom’s IP backbone network traffic and its planning requirements,the IP backbone network traffic was analyzed and forecasted by using the multi-factor regression model and the function adaptive mode of time series.The characteristics,advantages,disadvantages and applicable scenarios of these two models were compared based on simulation of a large number of actual network data.A set of principles and methods for selecting prediction model and optimizing parameters were proposed.Then,an automatic forecasting system with the high performance of dealing with hundreds of time series was built to greatly simplify and improve the traffic prediction efficiency.Finally,the development orientation of network capacity extension and key points of future IP traffic prediction were prospected.…”
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The Study and Analysis of city structure and its permanent development (Case study: Ardabil city) by Moharram Yousefi, Alireza Estelaji, Naser Fallah Tabar

“…Since it is descriptive and analytic in approach, the three features of capacity, suitability, and social justice in permanent development have been applied. …”
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Research on Characteristic of Hydrodynamic Bearing with the Surface Micro-pit by Shaolin Zhang, Lingxue Li, Boqian Xia

“…Among them， the optimal micro-pit depth makes the oil film bearing load capacity has been increased by 15.3%， and the threshold rotary speed has been increased by 6.9%. …”
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Application Prospect of Roof Greening in Sponge City by LUO Pingping, LIU Jiaxin, SU Mengfei, CAI Haohan, JIE Yuhan, LI Lingyu, ZHOU Meimei, LYU Jiqiang, SHI Wenhai

“…By analyzing the functions of roof greening, such aswater storage capacity and rainwater interception capacity, it points out that roof greening playsa positive role in reducing the urban surface runoff coefficient, reducing the peak flow, andrelieving the load pressure of urban drainage network, so as to achieve the purpose of alleviatingurban inundation. …”
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