美学与旅游饭店管理专业的实验教育

饭店管理专业的实验课,区别于其它学科的实验课程,它的实验对象是一人,通过服务技能及形体的强化训练,培养学生良好的风度及素养,掌握通用的服务操作技能.在两年的实验教学中发现,很多操作标准的制定都离不开人们的审美,深切感到美学在本学科中的指导意义.     

信息技术在南京市建设工程招投标管理中的应用

本文介绍了南京市建设工程招投管理信息系统。该系统使用数据库，采用客户／服务器结构模式，稳定性好，具有可移植和可扩充性，并具有远程访问功能。     

Reliability Analysis of Sensor Networks

To Integrate the capacity of sensing, communication, computing, and actuating, one of the compelling technological advances of these years has been the appearance of distributed wireless sensor network （DSN） for information gathering tasks. In order to save the energy, multi-hop routing between the sensor nodes and the sink node is necessary because of limited resource. In addition, the unpredictable conditional factors make the sensor nodes unreliable. In this paper, the reliability of routing designed for sensor network and some dependability issues of DSN, such as MTTF （mean time to failure） and the probability of connectivity between the sensor nodes and the sink node are analyzed. Unfortunately, we could not obtain the accurate result for the arbitrary network topology, which is # P-hard problem. And the reliability analysis of restricted topologies clustering-based is given. The method proposed in this paper will show us a constructive idea about how to place energyconstrained sensor nodes in the network efficiently from the prospective of reliability.     

五味子内生拮抗菌JYg07菌株的促生防病作用

为明确五味子内生拮抗菌JYg07菌株的促生防病作用,采用菌液浸泡、浇灌供试种子测定JYg07菌株对供试植物生长的影响;利用室内和大田浇灌菌液的方法研究其对五味子茎基腐病的防治效果.结果显示:JYg07菌株发酵稀释液对种子萌发及出苗没有影响,发酵液稀释100倍以下对植物的生长有促生作用,浸种+浇灌处理的促生作用最佳.温室试验表明,JYg07发酵液对五味子茎基腐病有一定的防治效果,并且随着浇灌次数的增加,防治效果呈逐步上升趋势,在第28天时防治效果最高,达到55.77％;提前浇灌菌株发酵液,能够减轻病害发生,起到预防作用.利用菌株发酵液在大田浇灌发病五味子植株表现出防治效果,但效果低于室内,防治效果最好的也仅在浇灌4次后第10天达到34.16％;防治效果的持续性也不理想,随着时间的延长,出现下降趋势.试验结果表明:JYg07菌株具备促进五味子植株生长,防治五味子茎基腐病的潜力.     

充满独特魅力的创意人物——理查德·布兰森

当他19岁还生活在伦敦一个毒品泛滥的社区时，他就为自己未来的航空公司起了一个独特的名字——“维珍”（Virgin，意为处女），现在的他是维珍集团的董事长总裁、世界最富传奇色彩的明星亿万富翁、闻名全球的嬉皮士资本家，他就是理查德·布兰森。     

《百家讲坛》成功密码解析

创办于2001年7月的《百家讲坛》,经过几年的实践摸索,如今已成为央视的名牌节目。在打造了众多文化名人的同时,其收视率也屡创新高。作为一种现象,《百家讲坛》的热播引起了人们的关注和思考。《百家讲坛》成功的原因何在？什么又是它走向成功的核心理念和制胜利器呢？     

从《乡村爱情故事》的热播说起——中国创意产业研究中心系列案例精选

<正>大年初三之后,央视和部分地方台陆续播出的《乡村爱情故事》以其较高的收视率和热烈的观众反响,又掀起了一轮农村题材电视剧的热播。其实,自2008年起,农村题材的电视剧就在央视"你方唱罢我登场",好不热闹,并都取得了不俗的收视率。《乡村爱情2》在央视首轮播出时平均收视率为8.46%,最     

HPLC法测定血浆及尿液中阿普唑仑浓度

采用Agilent Eclipse XDB-C18色谱柱(4.6mm×150mm,5μm),以甲醇-水(60¨40)为流动相,流速1.0ml/min,检测波长254nm,建立高效液相法(HPLC)测定血浆及尿液中阿普唑仑浓度。结果表明,HPLC法测定阿普唑仑和内标物的出峰时间是5.1min和8.73min,分离效果较好;阿普唑仑质控3种浓度(4.0μg/ml,8.0μg/ml,16.0μg/ml)日内和日间的RSD,血浆样品均小于6%,尿样均小于7%,血浆回收率为91.15%～93.69%,尿回收率为86.79%～90.11%,血浆及尿样品线性范围为2.0～64.0μg/ml,相关系数为0.9907。血浆和尿样品中阿普唑仑的最低检出限为2.0μg/ml。此条件可以对中毒药物阿普唑仑进行快速检测并定量,方法简便,准确。     

Analysis of coverage problem under border effects in wireless sensor networks

Wireless sensor networks can be used to monitor the interested region by deploying dense sensor nodes. Coverage is a primary metric to evaluate the capacity of monitoring. In this paper, we focus on the coverage problem under border effects, where the sensor nodes are distributed in a circle-shaped region randomly. Under this scenario, we derive the expected coverage of the sensor node and the total network coverage provided by n sensor nodes accurately by probability. These findings are useful to determine the related parameters (sensing range, number of sensor nodes and radius of monitored region) for a specific network coverage ratio. Simulation results demonstrate that our analysis is correct and effective.