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951.
本文首先对保险行业中的车载调度存在的问题做了一定的研究,并在此基础上设计出了基于GPS,GIS,GPRS三种技术于一体的一种车载调度系统,此系统能实现监控车辆的“实时在线”,并能采用”就近”原则使勘察车辆(人员)快速到达事故现场,因此能够提高保险行业中车载调度的公正性及有效性。 相似文献
952.
We elaborate a supply chain innovation matrix that can be applied to both commercial and military supply chains. By shifting the analysis from a focal firm to industry structure, we argue that the market structure of the entire supply chain functions as a major moderating variable in determining both the timing and adoption of innovations, both for commercial and military markets. We extend work on supply chain resource dependency by drawing a distinction between market-structure-induced resource dependency and supplier over-reliance on a customer in a competitive market. This has policy implications for the organization of military industrial research and development (IR&D). Joint service research and development (Jointness) will certainly bring about innovation, but it will be incremental, reinforcing established military hierarchies. Policy makers may need to add this probable consequence when comparing Jointness and inter-service rivalry. The cost savings inherent in Jointness may unwittingly sustain a military force unready for fighting the next war. 相似文献
953.
本文结合现代远程教育存在的问题,从树立现代远程教育的管理理念,建立优秀的网络教师队伍.提高学生在线学习质量,构建有效的学习支持服务体系等方面,探索了保障远程教育质量的策略,旨在说明提高远程教育质量的重要性。 相似文献
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956.
Lakshmi Lavanya Reddy Swarup A. V. Shah Alpa J. Dherai Chandrashekhar K. Ponde Tester F. Ashavaid 《Indian journal of clinical biochemistry : IJCB》2016,31(1):87-92
Acute coronary syndrome (ACS) is a term for a range of clinical signs and symptoms suggestive of myocardial ischemia. It results in functional and structural changes and ultimately releasing protein from injured cardiomyocytes. These cardiac markers play a major role in diagnosis and prognosis of ACS. This study aims to assess the efficacy of heart type fatty acid binding protein (h-FABP) as a marker for ACS along with the routinely used hs-TropT. In our observational study, plasma h-FABP (cut-off 6.32 ng/ml) and routinely done hs-Trop T (cutoff 0.1 and 0.014 ng/ml) were estimated by immunometric laboratory assays in 88 patients with acute chest pain. Based on the clinical and laboratory test findings the patients were grouped into ACS (n = 41) and non-ACS (n = 47). The diagnostic sensitivity, specificity, NPV, PPV and ROC curve at 95 % CI were determined. Sensitivity of hs-TropT (0.1 ng/ml), hs-TropT (0.014 ng/ml) and h-FABP were 53, 86 and 78 % respectively and specificity for the same were 98, 73 and 70 % respectively. Sensitivity, specificity and NPV calculated for a cut-off combination of hs-TropT 0.014 ng/ml and h-FABP was 100, 51 and 100 % respectively. These results were substantiated by ROC analysis. Measurement of plasma h-FABP and hs-TropT together on admission appears to be more precise predictor of ACS rather than either hs-Trop T or h-FABP. 相似文献
957.
[目的/意义]微信已经成为国内网民获取信息、分享信息、娱乐消费、社会交往的主要渠道,众多企业和个人借助微信公众号开展微信营销、品牌塑造、产品推广销售等活动,用户行为在微信信息质量等因素的影响下呈现多样化特点。[方法/过程]论文以微信公众号信息质量和用户行为作为研究对象,对相关研究进行回顾,并通过获取微信公众号用户行为数据,采用深度访谈及结构方程模型等方法,提出信息质量对用户互动行为影响的理论假设并进行验证。[结果/结论]发现信息质量指标中权威性、原创性、丰富性、适量性、时效性、适用性、趣味性、经济性对用户互动行为具有显著的正向影响,微信公众号的信息质量是决定用户互动行为的主要因素。[启示/发现]本文将微信公众号后台的用户行为数据分析纳入研究范围,探究行为背后信息质量的差异性及原因所在,为社交媒体信息质量与用户行为研究提供了新的研究视角;研究提高微信公众号信息质量的策略方法,对利益相关方均有较强的参考价值和实践意义。 相似文献
958.
Salamatullah Quazi M. Mohiduzzaman Moududur R. Khan B. Nahar M. Mostafizur Rahman M. Nurul Islam M. Baquer Chandrakant S. Pandav Harun K. M. Yusuf 《Indian journal of clinical biochemistry : IJCB》1997,12(2):128-133
Urinary iodine levels in children (5–11 years) and in adult males and females (15–44 years) of three ecological zones (hilly, flood-prone and plains) of Bangladesh were analyzed to determine the status of biochemical iodine deficiency in the country. Data indicated that a large majority of the population all over Bangladesh have biochemical iodine deficiency urinary iodine excretion (UIE) less than the accepted cut-off level of 10 μg/dl. Adults were deficient to comparable degrees, 31.3% severely iodine deficient. The flood-prone zone was less affected: 71.7% children had iodine deficiency and 25% were severely deficient. Adults of this zone were less affected than the children. Iodine deficiency was least severe in the plain zone: 59.8% children were biochemically iodine deficient and of them 23.4% had UIE less than 2.0 μg/dl. In the case of the adults of this zone, 60.8% were biochemically iodine deficient and 20.6% had severe iodine deficiency. The results indicate that Bangladesh as a whole is an iodine deficient region, with the hilly zone being the most severely affected. Children were slightly more affected than the adults, and females were more affected than the males. 相似文献
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960.
自然生态环境是城市生态系统赖以生存和发展的重要物质基础,生态足迹作为生态环境承载状态测度的指标,受到社会、经济、人口等多种因素的影响,表现出时空动态性和不确定性特征。鉴于集对分析(SPA)在处理不确定性问题的优势,以武汉市为研究对象,将城市总生态足迹与其相关影响因子联系起来考虑,融合集对分析中的同异反模式识别的“择近原则”和聚类分析思想构造集对分析动态模型,模型精度较高,验证误差均小于0.3%。并对武汉市2005年~2020年总生态足迹发展趋势进行了预测。研究结果表明,2005年~2020年总生态足迹将由1 784.662×104hm2增长到2 781.388×104hm2,呈现出低于GDP、高于能源利用率增长速率的趋势,生态环境将进一步恶化,对此就武汉市生态系统的发展提出了对策与建议。最后,指出SPA动态模型对城市生态系统中生态足迹动态化方法的修正具有理论和实际意义。 相似文献