http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Low‐power heterogeneous uncore architecture for future 3D chip‐multiprocessors
Aniseh Dorostkar,Arghavan Asad,Mahmood Fathy,Mohammad Reza Jahed Motlagh,Farah Mohammadi 한국전자통신연구원 2018 ETRI Journal Vol.40 No.6
Uncore components such as on‐chip memory systems and on‐chip interconnects consume a large amount of energy in emerging embedded applications. Few studies have focused on next‐generation analytical models for future chip‐multiprocessors (CMPs) that simultaneously consider the impacts of the power consumption of core and uncore components. In this paper, we propose a convex‐optimization approach to design heterogeneous uncore architectures for embedded CMPs. Our convex approach optimizes the number and placement of memory banks with different technologies on the memory layer. In parallel with hybrid memory architecting, optimizing the number and placement of through silicon vias as a viable solution in building three‐dimensional (3D) CMPs is another important target of the proposed approach. Experimental results show that the proposed method outperforms 3D CMP designs with hybrid and traditional memory architectures in terms of both energy delay products (EDPs) and performance parameters. The proposed method improves the EDPs by an average of about 43% compared with SRAM design. In addition, it improves the throughput by about 7% compared with dynamic RAM (DRAM) design.
( Nik Mohammad Balouchzahi ),( Mahmood Fathy ),( Ahmad Akbari ) 한국인터넷정보학회 2015 KSII Transactions on Internet and Information Syst Vol.9 No.5
The efficient send and receive of information in VANET improves the efficiency of the safety and traffic services advertisment and discovery. However, if the V2V is the only communication system used, the restrictions of the urban environment and network drop the performance of VANET. In order to improve the performance of the network, it is necessary to use V2I communication as well as V2V communication. Therefore, RSUs must be placed in the environment. However due to the high costs of placement, the full coverage of the environment would not be possible. Therefore, it is necessary to optimally install a limited number of RSUs in the environment. In this article a graph-based model is presented to find optimal location of RSUs in the urban scenario. All the urban and VANETs limitations have been applied to the graph in form of weight. Solving the Steiner tree problem leads to find optimal places to install RSUs. In the following, the presented model extends to support QoS requirement of service advertisement and discovery. The simulation results, based on real traces, shows an improvement in performance of the given model in comparison with the other scenarios of RSUs placement.
Hedhili Fekhra,Hassan Belqees,Rashid M.S.,Bakr Mohammed,Mahmood Q.,M. Al-Shomar Shereen,Alahmad Waed,Alimi Fathi,Mechi Lassaad 한국물리학회 2023 Current Applied Physics Vol.53 No.-
The inorganic double perovskites are remarkable materials for renewable energy which can be realized through solar cells and thermoelectric generators. Here, we have comprehensively elaborated the stability, mechanical, thermodynamic, optical and transport characteristics. The formation energy is computed to ensure thermodynamic validity and the tolerance factor is assessed for structural existence. The elastic constants satisfied the Born criteria and mechanical stability. Naviera’s velocities have been used to study the Debye temperature and directional lattice conductivity. Modifying the band gap from 3.1 to 0.58 eV by halide ions (Cl to I) probes the distinct optoelectronic characteristics. Absorption bands, dispersion of light energy, refraction, and optical loss explain the optical characteristics. In addition, the above thermoelectric factors like conductivities, Seebeck effect, and performance are studied in the temperature range of 100–600 K. Large figure of merit and extremely low lattice vibration at room temperature indicate their significance for thermoelectric devices.