检索结果-南通市图书馆

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于累积前景理论的孵化器运营前景研究

科技管理研究 2018年第3期38卷 94-99页

作者：段明圆阎瑞霞上海工程技术大学管理学院上海201620

为完善孵化器发展链条,促进大众创业,万众创新,构建基于累积前景理论的科技企业孵化器运营前景模型。首先,结合实际决策,设置孵化器运营评估指标;其次,构建基于累积前景理论的运营前景评估模型,通过设置评估值、预期值和时间3个参照点,... 详细信息

为完善孵化器发展链条,促进大众创业,万众创新,构建基于累积前景理论的科技企业孵化器运营前景模型。首先,结合实际决策,设置孵化器运营评估指标;其次,构建基于累积前景理论的运营前景评估模型,通过设置评估值、预期值和时间3个参照点,在充分考虑运营时间段内属性权重和时间权重的基础上,求解各地区在各属性状态下的累积前景值;最后,依据综合累积前景值对各个地区孵化器的前景进行排序和择优。从动态角度评估了各个地区科技企业孵化器的运营前景,为孵化器运营前景的评估增添了一种新的动态决策方法,具有实际应用价值。

关键词：累积前景理论科技企业孵化器运营前景动态评估

Toward ImprovedHuman Health:Efficacy of Dietary Selenium on Immunity at the Cellular Level

在线全文

学校读者我要写书评

暂无评论

Toward ImprovedHuman Health:Efficacy of Dietary Selenium on ...

国界对跨界民族文化影响的地图表达方式初探——以中国和陆边邻国为例

中国微生物学会兽医微生物学专业委员会暨中国畜牧兽医学会生物制品学分会2021年学术论坛

作者： Xiaojing Xia Xiulin Zhang Mingcheng Liu mingyuan duan Shanshan Zhang Xiaobing Wei Xingyou Liu

Selenium,an essential trace element in the body,participates in various biological processes in the form of *** humans,a suitable concentration of selenium is essential for maintaining normal cellular *** levels of selenoproteins can lead to obstruction of the normal physiological functions of tissues and cells and even *** addition,the level of selenium in the body affects cellular immunity,humoral immunity,and the balance between type 2 and type 1 helper T *** can affect the immune function of the body through the reactive oxygen species(ROS),NF-κB,ferroptosis and NRF2 *** paper reviews the immune effect of selenium on the body and the process of signal transduction and aims to serve as a reference for follow-up studies of immune function and research on the development of new selenium compounds and active targets.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

世界地理研究 2019年第2期28卷 13-21页

作者：周尚意段明远北京师范大学地理科学学部北京100875

中国地理学者服务于中国外交的途径之一,是提供中国与周边国家经济、社会、文化等方面的专题地图。跨界民族分布图就是展现国家地缘关系的一种专题地图。目前的跨界民族地图表达方式不能呈现出国界的影响,无法服务于跨界民族的地区管理... 详细信息

中国地理学者服务于中国外交的途径之一,是提供中国与周边国家经济、社会、文化等方面的专题地图。跨界民族分布图就是展现国家地缘关系的一种专题地图。目前的跨界民族地图表达方式不能呈现出国界的影响,无法服务于跨界民族的地区管理,为此,探索接近现实、易于理解的国界两侧跨界民族文化亲缘关系的专题地图十分必要。为弥补常见跨界民族分布地图的不足,从四个角度探索了地缘文化制图形式:跨界民族地区图斑空间单元尺度、多民族构成、两侧行政区边界不完全对位和语言亲缘度,设计了刻画地缘语言的亲缘度系数,而后绘制出专题地图。研究的结论为:第一,从数据的可获得性上看,跨界民族文化亲缘度地图的图斑空间单元以相当于中国县级区域的空间单元较为合适;第二,与传统的跨界民族分布图相比,跨界民族地缘语言亲缘度公式包含更多的因素,所作地图可呈现出更为精细的信息。

关键词：地图表达跨界民族文化地缘亲缘度文化地图国界

Ferroptosis and Its Role in Infectious Diseases

在线全文

学校读者我要写书评

暂无评论

Ferroptosis and Its Role in Infectious Diseases

基于四维参照点累积前景理论的风险型动态决策方法

中国微生物学会兽医微生物学专业委员会暨中国畜牧兽医学会生物制品学分会2021年学术论坛

作者： Mingcheng Liu Bin He mingyuan duan Shanshan Zhang Qiufen Wang Zhe Cheng Xiaojing Xia Jianhe Hu College of Animal Science and Veterinary Medicine Henan Institute of Science and Technology

Cell death is a vital process in *** the normal state,the organism clears damaged or harmful cells through cell death pathways to maintain the organism's tissue morphology and balance internal *** cells are exposed to irrecoverable extracellular or intracellular disturbances that disrupt their homeostasisand activate signal transduction cascades,

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

上海工程技术大学学报 2017年第3期31卷 262-266页

作者：段明圆阎瑞霞高鹏飞上海工程技术大学管理学院上海201620

针对时间段、状态属性不确定的风险型动态决策问题,考虑到状态变化下,不同的学习过程及相应的特征对决策者的影响,建立了状态变化和学习行为下的风险型动态决策模型.提出了一种基于四维参照点(预期值、评价值、时间及学习行为)累积前景... 详细信息

针对时间段、状态属性不确定的风险型动态决策问题,考虑到状态变化下,不同的学习过程及相应的特征对决策者的影响,建立了状态变化和学习行为下的风险型动态决策模型.提出了一种基于四维参照点(预期值、评价值、时间及学习行为)累积前景理论的风险型动态决策方法,并进行了算例分析.最后,基于累积前景值对各方案进行排序,确定了决策者的最优方案.通过与其他方法相比较,证明了所提出方法的有效性和科学性.

关键词：风险型动态决策累积前景理论四维参照点学习行为

在线全文

学校读者我要写书评

暂无评论

探索评价红色旅游政策措施效果的新视角

开发研究 2022年第4期 63-72页

作者：周尚意段明远潘周江道敏北京师范大学地理科学学部北京100875

以往评价政府支持旅游业的政策效果有两类方法:其一是以旅游业收入增加与否作为评判依据;其二是以游客满意度来评价。将提高区域经济效率作为评价依据,探索第三类评价方法十分必要。首先,对比了中外政府促进旅游途径的异同;其次,梳理了... 详细信息

以往评价政府支持旅游业的政策效果有两类方法:其一是以旅游业收入增加与否作为评判依据;其二是以游客满意度来评价。将提高区域经济效率作为评价依据,探索第三类评价方法十分必要。首先,对比了中外政府促进旅游途径的异同;其次,梳理了自2004年以来,中央和地方政府为促进红色旅游所推出的政策和措施。鉴于旅游业具有外部性,且不可避免地受到政府干预的影响,从消除外部性,促进市场竞争的角度出发,评价红色旅游政策措施的可能效果。最后,从政府政策受益群体的普遍性、对贫困地区旅游的带动性评价了与红色旅游相关的政府措施的潜在效果。其结论之一是中央和地方的红色旅游政策和措施在一定程度上消除了红色旅游的外部性,提升了旅游市场公平竞争性;结论之二是红色旅游的效益覆盖面比较广,超出了旅游业自身;结论之三是红色旅游业在空间上既增强了其他优质旅游资源区的丰富度,也覆盖了部分优质旅游资源的空白区。

关键词：红色旅游政府措施政策效果

同方期刊数据库

IoT-Based Cost Saving Offloading System for Cellular Networks

在线全文

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2017年第4期22卷 379-388页

作者： Zhuojun duan mingyuan Yan Qilong Han Lijie Li Yingshu Li Department of Computer Science Georgia State University Department of Computer Science and Information Systems University of North Georgia the College of Computer Science and Technology Harbin Engineering University

Nowadays, with the new techniques available in hardware and software, data requests generated by applications of mobile devices have grown explosively. The large amount of data requests and their responses lead to heavy traffic in cellular networks. To alleviate the transmission workload, offloading techniques have been proposed, where a cellular network distributes some popular data items to other wireless networks, so that users can directly download these data items from the wireless network around them instead of the cellular *** this paper, we design a Cost Saving Offloading System（CoSOS）, where the Internet of Things（IoT） is used to undertake partial data traffic and save more bandwidth for the cellular network. Two types of algorithms are proposed to handle the popular data items distribution among users. The experimental results show that CoSOS is useful in saving bandwidth and decreasing the cost for cellular networks.

关键词： Internet of Things(IoT) cellular networks cost minimization

Area Query Processing Based on Gray Code in Wireless Sensor Networks

在线全文

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2012年第5期17卷 499-511页

作者： Chunyu Ai Yueming duan mingyuan Yan Jing He Department of Computer Science Troy University Troy AL 36082 USA Department of Computer Science Georgia State University Atlanta GA 30303 USA Department of Computer Science Kennesaw State University Kennesaw GA 30144 USA

Area query processing is significant for various applications of wireless sensor networks since it can request information of particular areas in the monitored environment. Existing query processing techniques cannot solve area queries. Intuitively, centralized processing on Base Station can accomplish area queries via collecting information from all sensor nodes. However, this method is not suitable for wireless sensor networks with limited energy since a large amount of energy is wasted for reporting useless data. This motivates us to propose an energy-efficient in-network area query processing scheme. In our scheme, the monitored area is partitioned into grids, and a unique gray code number is used to represent a Grid ID （GID）, which is also an effective way to describe an area. Furthermore, a reporting tree is constructed to process area merging and data aggregations. Based on the properties of GIDs, subareas can be merged easily and useless data can be discarded as early as possible to reduce energy consumption. For energy-efficiently answering continuous queries, we also design an incremental update method to continuously generate query results. In essence, all of these strategies are pivots to conserve energy consumption. With a thorough simulation study, it is shown that our scheme is effective and energy-efficient

关键词： area query area query processing gray code wireless sensor networks

Efficient 16 Boolean logic and arithmetic based on bipolar oxide memristors

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2020年第10期63卷 203-210页

作者： Rui YUAN mingyuan MA Liying XU Zhenhua ZHU Qingxi duan Teng ZHANG Yu ZHU Yu WANG Ru HUANG Yuchao YANG Key Laboratory of Microelectronic Devices and Circuits (MOE) Department of Micro/NanoelectronicsPeking University Department of Electronic Engineering Beijing National Research Center for Information Science and TechnologyTsinghua University Center for Brain Inspired Chips Academy for Artificial IntelligencePeking University Frontiers Science Center for Nano-optoelectronics Peking University

The physically separated memory and logic units in traditional von Neumann computers place essential limits on the performance and cause increased energy consumption, and hence in-memory computing is required to overcome this bottleneck. Here, a new bipolar memristor based in-memory logic approach is proposed, which is capable of achieving all 16 possible Boolean logic functions in a single device in less than3 steps. This approach does not require initialization and can facilitate logic cascading, and the calculation taking place in-situ is showcased by 1-bit full adder and 2-bit multiplier with improved efficiency, thus showing a great prospect in future in-memory computing architecture.

关键词： memristor nonvolatile logic in-memory computing full adder multiplier