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ENERGY CALCULUSIN CHINESE LANGUAGE SEGMENTATION
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作者 董天石 王悦 陈玉泉 《Journal of Shanghai Jiaotong university(Science)》 EI 2000年第2期70-73,共4页
Based on cognitive science, the EnergyCalculus in Chinese language segmentation was presented to eliminate segmentation ambiguity. The notion of “EnergyCost” was advanced to denote the extent of the under standabili... Based on cognitive science, the EnergyCalculus in Chinese language segmentation was presented to eliminate segmentation ambiguity. The notion of “EnergyCost” was advanced to denote the extent of the under standability of a certain segmentation. EnergyCost function was defined with Z notation. This approcah is effective to all natural language segmentation. 展开更多
关键词 Chinese LANGUAGE SEGMENTATION COGNITIVE SCIENCE energycost Z notation Document code:A
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城镇圩区排涝泵站群日常运行方案优化 被引量:12
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作者 刘静森 程吉林 龚懿 《农业工程学报》 EI CAS CSCD 北大核心 2014年第17期141-148,共8页
为降低城镇圩区排涝泵站群日常运行能耗,提出排涝站群总能耗最小的多方案试验选优、圩外河道水位控制去劣的优化运行调度方法。将圩区泵站群分组作为试验因素、每组泵站的开机方案为试验水平,以泵站群总能耗为试验结果开展正交试验,对... 为降低城镇圩区排涝泵站群日常运行能耗,提出排涝站群总能耗最小的多方案试验选优、圩外河道水位控制去劣的优化运行调度方法。将圩区泵站群分组作为试验因素、每组泵站的开机方案为试验水平,以泵站群总能耗为试验结果开展正交试验,对试验结果应用正交分析得到泵站群若干种优化运行方案序列,选择总能耗最小且满足圩外河道的水位控制要求的方案为最优运行调度方案。以上海市城区某区域为实例,应用优化方法编制了2种潮水过程、4种降水条件下的优化调度预案;在不能利用潮水自排的最不利水文工况下,应用优化调度方案与现行调度方案相比,总电功耗最大可节省12%。通过开展优化调度方案与现行方案的节能效益比较,验证了现行方案的合理性并对现行方案提出了优化建议。一方面可为城镇圩区水行政主管部门优化日常调水预案提供参考,另一方面也为丰富和完善排泵站群优化调度方法的理论研究作了有益尝试。 展开更多
关键词 排水 降雨 优化 圩区 泵站群 排涝 正交试验 运行能耗
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Influence of infiltration on energy consumption of a winery building
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作者 Hejiang SUN Qingxia YANG 《Frontiers in Energy》 SCIE CSCD 2014年第1期110-118,共9页
With the wide use of light steel structure in industrial buildings, some problems such as air leakage, water dripping and condensation and so forth occur during the construction and operation phases. Through the onsit... With the wide use of light steel structure in industrial buildings, some problems such as air leakage, water dripping and condensation and so forth occur during the construction and operation phases. Through the onsite testing of a winery building in Huailai County, Hebei Province in China, the influence of infiltration on energy consumption in industrial buildings was studied. The pressurization test method and moisture condensation method were used to test the infiltration rates. The results show that the winery building is twice as leaky as normal Chinese buildings and five times as leaky as Canadian buildings. The energy use simulation demonstrates that the reduction of the infiltration rate of the exterior rooms to 1/3 and the interior rooms to 1/2 could help decrease a total energy consumption of approximately 20% and reduce a total energy cost of approximately $ 225000. Therefore, it has a great potential to reduce the energy consumption in this type of buildings. Enforcement of the appropriate design, construction and installation would play a significant role in improving the overall performance of the building. 展开更多
关键词 industrial building air change rate pressur-ization test method moisture condensation method energycost
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