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  • Open Access

    ARTICLE

    Crosstalk Aware Register Reallocation Method for Green Compilation

    Sheng Xiao1, 2, *, Jing Selena He3, Xi Yang4, Yazhe Wang1, Lu Jin1

    CMC-Computers, Materials & Continua, Vol.63, No.3, pp. 1357-1371, 2020, DOI:10.32604/cmc.2020.09929 - 30 April 2020

    Abstract As nanoscale processing becomes the mainstream in IC manufacturing, the crosstalk problem rises as a serious challenge, not only for energy-efficiency and performance but also for security requirements. In this paper, we propose a register reallocation algorithm called Nearby Access based Register Reallocation (NARR) to reduce the crosstalk between instruction buses. The method includes construction of the software Nearby Access Aware Interference Graph (NAIG), using data flow analysis at assembly level, and reallocation of the registers to the software. Experimental results show that the crosstalk could be dramatically minimized, especially for 4C crosstalk, with a More >

  • Open Access

    ARTICLE

    Biochar Application Enhanced Post-Heading Radiation Use Efficiency in Field-Grown Rice (Oryza sativa L.)

    Xiaohong Yin, Zui Tao, Jiana Chen, Fangbo Cao, Min Huang*, Yingbin Zou

    Phyton-International Journal of Experimental Botany, Vol.89, No.2, pp. 415-422, 2020, DOI:10.32604/phyton.2020.08962 - 22 April 2020

    Abstract It has been shown that adding biochar to soil can improve nitrogen (N) uptake and utilization in rice (Oryza sativa L.). However, there is a lack of research on the physiological alterations of rice as a result of the changes in nitrogen uptake due to the addition of biochar. This study conducted field experiments in 2015 and 2016 with the goal of testing the hypothesis that the application of biochar would enhance radiation use efficiency (RUE) of rice by improving the plant’s ability to take in and utilize nitrogen. Our results demonstrated that the application of More >

  • Open Access

    ARTICLE

    Energy Efficiency in Internet of Things: An Overview

    Wuxiong Zhang1, 2, Weidong Fang1, 2, *, Qianqian Zhao1, 2, Xiaohong Ji3, Guoqing Jia3

    CMC-Computers, Materials & Continua, Vol.63, No.2, pp. 787-811, 2020, DOI:10.32604/cmc.2020.07620 - 01 May 2020

    Abstract Energy efficiency is very important for the Internet of Things (IoT), especially for front-end sensed terminal or node. It not only embodies the node’s life, but also reflects the lifetime of the network. Meanwhile, it is also a key indicator of green communications. Unfortunately, there is no article on systematic analysis and review for energy efficiency evaluation in IoT. In this paper, we systemically analyze the architecture of IoT, and point out its energy distribution, Furthermore, we summarized the energy consumption model in IoT, analyzed the pros and cons of improving energy efficiency, presented a More >

  • Open Access

    ARTICLE

    Adsorption Behavior of Reducing End-Modified Cellulose Nanocrystals: A Kinetic Study Using Quartz Crystal Microbalance

    Maud Chemin, Céline Moreau, Bernard Cathala, Ana Villares*

    Journal of Renewable Materials, Vol.8, No.1, pp. 29-43, 2020, DOI:10.32604/jrm.2020.07850 - 01 January 2020

    Abstract In this work, we studied the adsorption of modified cellulose nanocrystals onto solid surfaces by quartz crystal microbalance with dissipation monitoring (QCM-D). Cellulose nanocrystals obtained from tunicate (CNC) were modified at reducing end by amidation reactions. Two different functionalities were investigated: a polyamine dendrimer (CNC-NH2), which interacts with gold surface by the amine groups; and a biotin moiety (CNC-Biot), which has a strong affinity for the protein streptavidin (SAV). QCM-D results revealed different adsorption behaviors between modified and unmodified CNCs. Hence, unmodified CNCs covered almost all the surface forming a rigid and flat layer whereas reducing More >

  • Open Access

    ARTICLE

    STUDY ON THE LIFETIME OF CATALYST IN CATALYTIC COMBUSTION FURNACE OF NATURAL GAS AND APPLICATIONS OF HEATING POTTERY

    Shihong Zhang* , Hui Yang

    Frontiers in Heat and Mass Transfer, Vol.12, pp. 1-5, 2019, DOI:10.5098/hmt.12.6

    Abstract This article discussed the lifetime of catalyst on cost effect for catalytic combustion furnace and applications of pottery heated by catalytic combustion furnace in purification water. The time of start-up process rises with the increase of the number of ignition. The catalyst sintering was remarkable. By reducing the number of ignition and adjusting the temperature rise uniformly in the furnace, the efficient utilization of thermal energy could be realized to saving production cost and extending the lifetime of catalyst. With exquisite and even-textured surface the pottery had striking purification effect on water. The water purification More >

  • Open Access

    ARTICLE

    THERMAL PERFORMANCE IMPROVEMENT IN A SQUARE CHANNEL HEAT EXCHANGER WITH VARIOUS PARAMETERS OF V-WAVY PLATES

    Amnart Boonloia, Withada Jedsadaratanachaib,*

    Frontiers in Heat and Mass Transfer, Vol.12, pp. 1-9, 2019, DOI:10.5098/hmt.12.1

    Abstract Numerical examinations on flow and heat transfer behaviors in a square channel heat exchanger equipped with various configurations of V-wavy plate are performed. The pitch-to-channel height ratios, wavy height-to-channel height ratios and flow directions of the test section are investigated for the Reynolds number in the range of 100 – 1000 (laminar flow regime). The finite volume method is selected for the present investigation. The results are reported in terms of flow and heat transfer mechanisms in the channel. The thermal performance assessments of the square channel fitted with the V-wavy plate are also concluded. More >

  • Open Access

    ARTICLE

    INFLUENCE OF RING SIZE AND LOCATION ON FLOW TOPOLOGY, HEAT TRANSFER STRUCTURE AND THERMAL EFFICIENCY IN HEAT EXCHANGER SQUARE CHANNEL PLACED WITH 30-DEGREE INCLINED SQUARE RING

    Amnart Boonloia, Withada Jedsadaratanachaib,*

    Frontiers in Heat and Mass Transfer, Vol.13, pp. 1-11, 2019, DOI:10.5098/hmt.13.28

    Abstract This paper presents the numerical investigations (finite volume method with SIMPLE algorithm) on flow structure, heat transfer behavior and performance assessment in heat exchanger square channel placed with 30o inclined square ring (ISR). The influences of ring size and placement on flow and heat transfer characteristics are considered for laminar flow region with the Reynolds number in the range around 100 – 2000. The purpose for the insertion of the ISR in the square channel is to induce the vortex flow and also increase the turbulent mixing. The numerical result reveals that the ring size More >

  • Open Access

    ARTICLE

    PHYSICAL HEAT TRANSFER

    Hai-Dong Wanga , Zeng-Yuan Guoa,*

    Frontiers in Heat and Mass Transfer, Vol.13, pp. 1-12, 2019, DOI:10.5098/hmt.13.20

    Abstract The classical heat transfer theory is established on the empirical models of Fourier’s heat conduction law and Newton’s cooling law. Although the classical theory has been successfully used in a wide range of industrial engineering applications, it lacks deep understanding of the physical mechanisms for energy transport and analytical methodology based on solid mathematical and mechanical principles. The rapid development of modern science and technology challenges the traditional heat transfer theory in two aspects: (1) Fourier’s law of heat conduction is no longer valid under the ultra-fast laser heating or nanoscale conditions; (2) The optimization… More >

  • Open Access

    ARTICLE

    Analysis of Underlay Cognitive Radio Networks Based on Interference Cancellation Mechanism

    Lei Wang1, Jian Liu1,*, Alan Yang2

    Journal of Information Hiding and Privacy Protection, Vol.1, No.3, pp. 119-133, 2019, DOI:10.32604/jihpp.2019.07296

    Abstract In this paper, we study the state-dependent interference channel, where the Rayleigh channel is non-causally known at cognitive network. We propose an active secondary transmission mechanism with interference cancellation technique according to the ON-OFF status of primary network. the secondary transmission mechanism is divided into four cases according to the active state of the primary user in the two time slots. For these interference cases, numerical results are provided to show that active interference cancellation mechanism significantly reduces the secondary transmission performance in terms of secondary outage probability and energy efficiency. More >

  • Open Access

    ARTICLE

    CPAC: Energy-Efficient Algorithm for IoT Sensor Networks Based on Enhanced Hybrid Intelligent Swarm

    Qi Wang1,*, Wei Liu1, Hualong Yu1, Shang Zheng1, Shang Gao1, Fabrizio Granelli2

    CMES-Computer Modeling in Engineering & Sciences, Vol.121, No.1, pp. 83-103, 2019, DOI:10.32604/cmes.2019.06897

    Abstract The wireless sensor network (WSN) is widely employed in the application scenarios of the Internet of Things (IoT) in recent years. Extending the lifetime of the entire system had become a significant challenge due to the energy-constrained fundamental limits of sensor nodes on the perceptual layer of IoT. The clustering routing structures are currently the most popular solution, which can effectively reduce the energy consumption of the entire network and improve its reliability. This paper introduces an enhanced hybrid intelligential algorithm based on particle swarm optimization (PSO) and ant colony optimization (ACO) method. The enhanced More >

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