Parallel scheduling strategy of web-based spatial computing tasks in multi-core environment

In order to improve the concurrent access performance of the web-based spatial computing system in cluster,a parallel scheduling strategy based on the multi-core environment is proposed,which includes two levels of parallel processing mechanisms.One is that it can evenly allocate tasks to each server node in the cluster and the other is that it can implement the load balancing inside a server node.Based on the strategy,a new web-based spatial computing model is designed in this paper,in which,a task response ratio calculation method,a request queue buffer mechanism and a thread scheduling strategy are focused on.Experimental results show that the new model can fully use the multi-core computing advantage of each server node in the concurrent access environment and improve the average hits per second,average I/O Hits,CPU utilization and throughput.Using speed-up ratio to analyze the traditional model and the new one,the result shows that the new model has the best performance.The performance of the multi-core server nodes in the cluster is optimized; the resource utilization and the parallel processing capabilities are enhanced.The more CPU cores you have,the higher parallel processing capabilities will be obtained.     

3D打印技术专利侵权问题研究

3D打印技术对于产品设计、制造和销售方式产生了变革作用,同时可能引发较高的专利侵权风险。根据现有的专利侵权构成要件,3D打印侵权产品和传播3D打印模型文档的行为难以构成直接侵权和间接侵权,专利权人所采用的技术措施也没有明确法律依据对其给予保护,网络经营者也不能在链接侵权产品设计行为中得到侵权豁免。有必要取消专利侵权行为的生产经营目的要件,建立并拓展间接侵权制度,构建专利领域的避风港规则,并对专利权人采取的技术措施给予合理保护。     

中国药典中含有毒性成分朱砂、雄黄的中药使用安全性探讨

目的:探讨含有毒性成分朱砂、雄黄的中药安全性.方法:对中国药典2010版中含有毒性成分朱砂、雄黄的药品组方进行研讨.结果:药典中含有朱砂、雄黄的口服药品66种,其中儿童用药20种.含有雄黄的药品27种,其中儿童用药7种,4种雄黄用量超过成人日使用剂量的50%;含朱砂药品59种,其中儿童用药19种;同时含有朱砂和雄黄的药品20种.结论:中国药典中关于朱砂和雄黄的使用剂量存在多重标准,药品的使用存在极大的安全隐患,特别是儿童用药和需要长期服用的药品.     

基于规划视角的炎陵县环境保护发展战略探讨

在剖析炎陵县环境保护的外部环境和内部环境基础上,结合炎陵县的环境保护的现状,并针对炎陵县环境保护存在的城市生活污染严重、工业结构性污染严重等主要问题进行了深入研究,并提出调整产业结构和布局,加大城市生活污染防治力度,加大农村环境保护力度,加快深坑经济工业区建设,加强辐射安全保护工作,以及提升全社会生态文明意识等对策.     

汉语散文翻译中的审美再现--以《樱之家》为例

根据翻译美学理论,从翻译审美的主体和客体、翻译方法和翻译效果等方面研究《樱之家》的译文,探究如何在散文翻译中再现其美学特质,并揭示翻译所造成的美感磨蚀。     

一种基于改进的弹性安全换道间距规则的元胞自动机模型

基于对STCA模型与F STCA模型的分析研究,结合车辆换道的实际状况,重新定义了换道风险度的概念,提出了一种更符合实际情况的改进的弹性安全换道间距规则,并进一步提出了基于该规则的双车道元胞自动机交通流模型.实验结果表明,该模型有益于提高道路资源利用率,同时在安全方面能够降低事故发生的可能性.     

济南泉城聚落空间形态与生态环境的关联嬗变

回顾济南自春秋战国到清代末期巧用自然环境、构建特色风貌的城市生态化建设发展历程,从有机结合景观环境的城市泉水水系、由泉而生的适宜人居环境以及趋利避害的城市防灾措施三方面,分析了农耕时代济南先民因利自然的聚居环境营建理念和趋利避害的朴素生态智慧实践。反思自然生态环境的恶化给济南的聚居条件带来了的负面影响,通过梳理近年来济南生态环境重建工作推动城市可持续发展的经验,指出系统保护地域自然生态环境、促进古城营建生态智慧与新型城市功能的有机结合、实现人居环境与自然环境的和谐交融是当代城市建设的理想目标。     

Magnetic characteristics and its environmental implications of core YSJD-86GC sediments from the southern South China Sea

Sediments of core YSJD-86GC （referred to as 86GC） collected from the southern South China Sea were selected for environmental magnetic studies. Combined with the published chronological framework, sediment magnetic properties were revealed for the study area since the MIS3 stage. The rock magnetic results indicate that low-coercivity magnetite is the main magnetic mineral within the sediments. Also, a certain amounts of hematite are present. The King plot and Day plot, which reflect the magnetic particle size, show that fine-grained pseudo-sin- gle-domain phase magnetic particles dominate the magnetic minerals in the sediments. Comparison of magnetic parameters and geochemical indicators show that magnetic properties of core 86GC sediments reflect a terrigenous input. Simultaneously, magnetic characteristics of the stud- ied sediment are influenced by the quantity of terrigenous sediment input, oxidation-reduction conditions of the provenance area, and the transportation environment and distance. Sea level fluctuation caused by global climate change was the main factor for variation in concentration of magnetic minerals and magnetic particle size of thestudied core sediments. Thus, variation of sediment magnetic properties in the study area can be used as an indirect indicator of sea level fluctuation.     

基于UC3906的本安型直流不间断稳压电源的设计

为了解决矿用供电电网停电导致通讯及监控设备无法正常工作的现状,设计了一种本安型直流不间断稳压电源.基于信号流程和电路功能模块划分,利用三端稳压器TL431配合蓄电池专用充电管理芯片UC3906实现了对镍氢电池的智能充电和过放电控制.分析了本安型直流不间断稳压电源的设计原理、各组成模块的功能以及工作过程.为了满足设计电源的不间断性和本质安全性要求,设计有切换电路、可调稳压电路及过压、过流保护等电路.当检测到矿用交流电不能正常供电时自动进行电路切换,启动镍氢电池供电,从而保证负载持续工作.测试结果表明:所设计的电源具有稳压性能优良,电压调整率、负载调整率高等优点;工频耐压、绝缘电阻及火花点燃等实验满足了本安型电气设备的要求.     

基于广义相加模型的脑卒中发病环境因素分析

利用统计方法,通过建立广义相加模型,对脑卒中发病数与气温,气压和湿度之间的关系做了建模分析;结果显示,低气温和高气压对脑卒中发病率的影响较大,不同性别脑卒中发病率对天气的反应不一样,女性对气压的反应要更大些,60岁以下的人群脑卒中发病率受低温影响较为明显,而60岁以上人群脑卒中发病率受气压变化的影响更为明显;最后,对高危人群提出预警和干预的建议方案.