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Investigation and Solutions of Rural Micro Insurance——A Case of Hebei Province

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Asian Agricultural Research 2010年第8期2卷 19-22页

作者： wang wei-guo,LING Mei,LI Jia Agricultural University of Hebei,Baoding 071001,China

On the strength of investigation,the status quo of rural micro insurance of Hebei Province is *** results show that it is characterized by the following features:rapid development;continuously increased experimental types and experimental areas;increasingly improved ability of serving the economic and social development;the combination of micro insurance and small loan has achieved *** on the efforts of analyzing the questionnaires,the following problems of the development of rural small loan are *** instance,the inadequate promotion on micro insurance;peasants' weak awareness of insurance;unclear understanding of the functions of micro insurance;unitary marketing channel of micro insurance;complex reasons of peasants' unwillingness to buy micro insurance and the poor service quality of insurance *** view of these problems,countermeasures and suggestions are put forward,which include strengthening the promotion on micro insurance,improving peasants' awareness of insurance;expanding the marketing channel and innovating operation mode;innovating the products of micro insurance and encouraging technological innovation;improving the quality of service and establishing the excellent image of insurance company;strengthening the support from government and assisting peasants to insure.

关键词： Rural micro insurance Marketing channel Management

中等光强纳秒激光电离苯团簇产生多价碳离子的数值模拟和实验研究

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物理学报 2014年第10期63卷 99-106页

作者：赵无垛王卫国李海洋中国科学院大连化学物理研究所大连116023 中国科学院大学北京100049

飞秒强激光与团簇相互作用产生多价离子的现象已被广泛报道,然而近期多个研究小组发现当功率密度低至1010W/cm2的纳秒激光照射团簇时,同样也观察到了多价离子的存在.虽然可以用'多光子电离引发-逆韧致吸收加热-电子碰撞电离'电离机理对... 详细信息

飞秒强激光与团簇相互作用产生多价离子的现象已被广泛报道,然而近期多个研究小组发现当功率密度低至1010W/cm2的纳秒激光照射团簇时,同样也观察到了多价离子的存在.虽然可以用'多光子电离引发-逆韧致吸收加热-电子碰撞电离'电离机理对这种现象进行解释,但是缺乏相应的数值模拟.建立了一个简化的数值模型,根据有质动力势Up计算团簇内电子能量,再由Lotz公式计算出相应的电离截面,最后由动力学反应速率方程计算出团簇内多价碳离子随时间的演变.详细分析了团簇尺寸、电子密度等关键参数对多价离子产生的影响.数值模拟结果表明:团簇电离在小于0.7 ns时间尺度内完成,C2+,C3+和C4+多价离子强度达到平衡后,离子相对强度由大到小依次为C2+,C3+,C4+,这与实验结果相一致;多价离子的价态随着团簇尺寸的增加而升高,半径为5.6 nm的苯团簇比半径为3 nm的苯团簇更容易产生高价态的离子,这也与实验结果相一致.

关键词：带电团簇碰撞电离数值模拟研究

UWB-Based Wireless Sensor Network

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ZTE Communications 2005年第3期3卷 16-20页

作者： Wu weiwei, wang weidong, wei guo (University of Science and Technology of China, Hefei 230027, China)

A wireless sensor network integrates the sensor, micro - electromechanical system and communication networks. Numbers of academic researchers and insiders are engaged in developing wireless sensor networks due to their bright future with various applications. In this article, the basic concepts, network architecture, some valuable applications and research projects are briefly introduced. Combining with the advantages of UWB technology, the hot spots including physical-layer communication link, media access control schemes, network layer routing protocols and the positioning methods are discussed in detail.

关键词： UWB-Based Wireless Sensor Network MAC node

Significance of changes of gastrointestinal peptides in blood and ileum of experimental spleen deficiency rats

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World Journal of Gastroenterology 2003年第3期9卷 553-556页

作者： Li-Sheng Li Rui-Yao Qu wei wang Hua guo Department of Physiology,Capital University of Medical Sciences,100054,Beijing,China Department of Physiology Capital University of Medical Sciences 100054 Beijing China. lls@***

AIM: To explore the mechanism of spleen deficiency (SD)by studying the relationship of gastro-intestinal peptides level and ileal electro-mechanical activity of SD rats and cold restrain ***: (1) spleen deficiency (SD) model was established by feeding Houpou:Zhishi: Dahuang in the ratio of 3:3:2,3 ml/time, for 42 days. (2) The cold restrain stress model:Animals were restrained on grille and placed in a cool water at 18 °C for 3 h. (3) Substance P (SP) and vasoactive intestinal peptide (VIP) levels in all layers of initial part of ileum and blood in rats were measured by radioimmunoassays (RIA)while changes of electric activity and motility in ileum of rats were recorded with electrode and strain ***: SP levels in ileum and blood of experimental SD rats were significantly higher than that of the control groups (9.89±5.65 vs 1.22±1.18, P＜0.005, in ileum; 22.7±3.95 vs6.60±1.47, P＜0.001, in blood) while the VIP levels of theSD rats were significantly lower than that of the controls (3.50±2.01 vs9.10±4.91, P＜0.05, in ileum; 229.8±62.4 vs560.4±151.3, P＜0.001, in blood). As compared with the controls, the average frequency of slow electric waves (21.3±0.96 vs18.2±2.28, P＜0.05) and motility (21.5±0.58vs 18±2.65, P＜0.005) of SD rats increased obviously and the frequency of fast waves of SD rat also increased. In spontaneous recovery cases, SP levels recovered significantly (compared with the SD groups, 2.99±0.62 vs 9.89±5.65,P＜0.001, in ileum; 14.4±4.22 vs 22.7±3.95, P＜0.001, in blood) but did not drop to normal. After the SD rats treated with Chinese herbs (Jiawei Sijun zi Tang), SP improved (compared with SD cases, 2.20±1.25 vs9.89±5.65, (P＜0.001),in ileum; 10.7±1.88 vs 22.7±3.95, (P＜0.001), in blood)and VIP in blood also improved (compared with SD rats,485.7±229.0 vs 229.8±62.4, P＜0.01) while the amplitude of motility decreased apparently (compared with the SD rats,0.64±0.096 vs0.89±0.15, P＜0.01). The ileal SP levels of cool stress didn't change while t

关键词：胃肠缩氨酸脾缺乏症血浆回肠动物实验放射免疫法

The complex effects of miR-146a in the pathogenesis of Alzheimer's disease

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Neural Regeneration Research 2025年第5期20卷 1309-1323页

作者： Yunfan Long Jiajia Liu Yu wang Haidong guo guohong Cui Department of Neurology Shanghai No.9 People’s HospitalShanghai Jiaotong University School of MedicineShanghaiChina Academy of Integrative Medicine Shanghai University of Traditional Chinese MedicineShanghaiChina School of Integrative Medicine Shanghai University of Traditional Chinese MedicineShanghaiChina Department of Neurology Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghaiChina

Alzheimer's disease is a neurodegenerative disorder characterized by cognitive dysfunction and behavioral *** plaques formed through the extracellular deposition of amyloid-βproteins,as well as neurofibrillary tangles formed by the intracellular deposition of hyperphosphorylated tau proteins,comprise two typical pathological features of Alzheimer's *** symptomatic treatment,there are no effective therapies for delaying Alzheimer's disease ***(miR)are small,non-coding RNAs that negatively regulate gene expression at the transcriptional and translational levels and play important roles in multiple physiological and pathological ***,miR-146a,a NF-κB-regulated gene,has been extensively implicated in the development of Alzheimer's disease through several *** has demonstrated substantial dysregulation of miR-146a both during the initial phases and throughout the progression of this *** R-146a is believed to reduce amyloid-βdeposition and tau protein hyperphosphorylation through the TLR/IRAK1/TRAF6 pathway;however,there is also evidence supporting that it can promote these processes through many other pathways,thus exacerbating the pathological manifestations of Alzheimer's *** has been widely reported that miR-146a mediates synaptic dysfunction,mitochondrial dysfunction,and neuronal death by targeting m RNAs encoding synapticrelated proteins,mitochondrial-related proteins,and membrane proteins,as well as other *** the impact on glial cells,miR-146a also exhibits differential *** one hand,it causes widespread and sustained inflammation through certain pathways,while on the other hand,it can reverse the polarization of astrocytes and microglia,alleviate neuroinflammation,and promote oligodendrocyte progenitor cell differentiation,thus maintaining the normal function of the myelin sheath and exerting a protective effect on *** this review,we provide a

关键词： Alzheimer's disease amyloid-β glial cells microRNAs miR-146a neuroinflammatory

一种面向位置信息的安全Skyline查询方案

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密码学报 2018年第2期5卷 218-230页

作者：王维国李辉西安电子科技大学网络与信息安全学院西安710126

作为多目标优化的一种重要手段,Skyline计算的研究一直是当前的热点.然而现今大部分的研究在于如何提高Skyline计算的效率,由云端Skyline计算所带来的数据泄露对数据提供者和用户隐私产生的巨大威胁却被人们忽视,这是当前Skyline计算研... 详细信息

作为多目标优化的一种重要手段,Skyline计算的研究一直是当前的热点.然而现今大部分的研究在于如何提高Skyline计算的效率,由云端Skyline计算所带来的数据泄露对数据提供者和用户隐私产生的巨大威胁却被人们忽视,这是当前Skyline计算研究的新的挑战.现有的Skyline安全计算的解决方案多需要多个云服务器相互协作,但是多个云服务器存在共谋的风险,并且使用多个服务器会大大增加计算的成本.为了解决上述问题,本文提出了一种基于位置信息的Skyline安全计算方案.利用该方案,只需使用一台云服务器和一台可信任的辅助计算的数据提供商服务器,同时利用保序加密算法和R*树结构就可以高效、安全地实现基于位置信息的Skyline计算,其中位置信息是指Skyline计算对象是二维坐标上的目标,这在实际问题中十分常见.综合分析表明,该方案可以实现安全的Skyline计算.同时,与明文上的Skyline计算相比,该方案也可以很快地响应用户的查询请求.

关键词： Skyline计算云计算保序加密 R*树位置信息

InAs/GaSb超晶格/GaSb体材料中短波双色红外探测器

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红外与毫米波学报 2021年第5期40卷 569-575页

作者：马晓乐郭杰郝瑞亭魏国帅王国伟徐应强牛智川云南师范大学云南省光电信息技术重点实验室云南昆明650500 中国科学院半导体研究所超晶格与微结构国家重点实验室北京100083 中国科学院大学材料科学与光电子工程中心北京100049

采用GaSb体材料和InAs/GaSb超晶格分别作为短波与中波吸收材料,外延生长制备了NIPPIN型短中双色红外探测器。HRXRD及AFM测试表明,InAs/GaSb超晶格零级峰和GaSb峰半峰宽FWHM分别为17.57 arcsec和19.15 arcsec,10μm×10μm范围表面均方... 详细信息

采用GaSb体材料和InAs/GaSb超晶格分别作为短波与中波吸收材料,外延生长制备了NIPPIN型短中双色红外探测器。HRXRD及AFM测试表明,InAs/GaSb超晶格零级峰和GaSb峰半峰宽FWHM分别为17.57 arcsec和19.15 arcsec,10μm×10μm范围表面均方根粗糙度为1.82Å。77 K下,SiO_(2)钝化器件最大阻抗与面积乘积值RA为5.58×10^(5)Ω∙cm^(2),暗电流密度为5.27×10^(-7) A∙cm^(-2),侧壁电阻率为6.83×10^(6)Ω∙cm。经阳极硫化后,器件最大RA值为1.86×10^(6)Ω∙cm^(2),暗电流密度为4.12×10^(-7)A∙cm^(-2),侧壁电阻率为4.49×10^(7)Ω∙cm。相同偏压下,硫化工艺使器件暗电流降低1-2个数量级,侧壁电阻率提高了1个数量级。对硫化器件进行了光谱响应测试,器件具有依赖偏压极性的低串扰双色探测性能,其短波通道与中波通道的50%截止波长分别为1.55μm和4.62μm,在1.44μm、2.7μm和4μm处,响应度分别为0.415 A/W、0.435 A/W和0.337 A/W。

关键词： InAs/GaSb超晶格 GaSb体材料中短双色红外探测侧壁电阻率低串扰

Analysis of Micromechanical Properties at the Interface of Pre-wet SBS Modified Asphalt Mixture Based on Molecular Simulation Technology

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 103-113页

作者： CHEN Wuxing CHEN Shuang YU Yan ZHANG Jiangyi XU Haiyang guo wei School of Mines China University of Mining and TechnologyXuzhou 221000China College of Construction Engineering Jilin Uni-versityChangchun 130026China

The pre-wetting of aggregate surface is a means to improve the interface performance of SBS modified asphalt and *** effect of pre-wetting technology on the interaction between SBS modified asphalt and aggregate was analyzed by molecular dynamics *** diffusion coefficient and concentration distribution of SBS modified asphalt on aggregate surface are *** simulation results show that the diffusion coefficient of the aggregate surface of SBS modified asphalt is increased by 47.6%and 70.5%respectively after 110#asphalt and 130#asphalt are *** concentration distribution of SBS modified asphalt on the aggregate surface after pre-wetting is more *** to the results of interface energy calculation,the interface energy of SBS modified bitumen and aggregate can be increased by about 5%after *** to the results of molecular dynamics simulation,the pre-wetting technology can effectively improve the interface workability of SBS modified bitumen and aggregate,so as to improve the interface performance.

关键词： pre-wet oil-stone interface interface interaction interface mechanics molecular dynamics simulation

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辽宁省工业行业技术及配置无效率的测度

中国人口·资源与环境 2009年第4期19卷 145-150页

作者：王维国潘祺志东北财经大学数学与数量经济学院辽宁大连116025

通常采用生产函数或成本函数研究生产者行为时,一般默认生产者总是在生产可能性边界安排生产,而忽略了由于产出的经济无效率所造成的偏差,这种偏差最终会影响要素替代弹性、要素最优配置及产出效率的准确测度。本文采用面板模型的三要... 详细信息

通常采用生产函数或成本函数研究生产者行为时,一般默认生产者总是在生产可能性边界安排生产,而忽略了由于产出的经济无效率所造成的偏差,这种偏差最终会影响要素替代弹性、要素最优配置及产出效率的准确测度。本文采用面板模型的三要素成本函数循环参数估计法,通过施加规模报酬不变的假设,估算了辽宁省工业部门二类行业的相对技术无效率、配置无效率程度及要素间的相对价格扭曲,并计算了资本、劳动、能源要素间的交叉替代弹性。结果表明:辽宁省工业行业存在较为严重的产出端技术无效率,而在要素投入的配置效率环节,能源要素存在一定程度的过度消耗。因此,通过提升技术效率,在要素投入水平不变的前提下,能大幅改善产出水平,这将是辽宁省完成节能降耗指标的主要途径。

关键词：技术与配置无效率成本边界函数要素价格扭曲