Design and Implementation of Administration Business System for a Public Security Bureau

随着信息科学技术的飞速发展，办公自动化系统在技术和应用上都得到了更高层次的发展，人们逐渐意识到对办公管理系统的运用可以使日常办公工作更加方便、快捷和高效。随着公安信息化的飞速发展，应用信息化平台处理公安行政管理业务，实现科技强警，增强公安系统的快速反应、统一指挥、打击犯罪的能力，以及协调作战的能力，需要为市公安局建设一套行政管理信息系统，对公安日常行政管理工作提供更便捷，实现公安管理现代化和自动化。 本文结合公安局行政管理业务需要，对当前系统开发背景及意义进行研究，分析实际业务要求，并基于J2EE技术架构，选用Eclipse作为开发工具，后台数据库采用SQLSERVER2005，结合UML、...With the rapid development of information science and technology, office automation system in technology and applications have been a higher level of development, people gradually realize that to the use of office management system can make the daily office work more convenient, fast and efficient. With the rapid development of the public security information, application information system to dea...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201323141

Join-type query optimization in Nested relational databases

Thesis (Ph.D. in Engineering)--University of Tsukuba, (A), no. 1401, 1995.3.2

Design and Implementation of Performance Management System for a College

随着高校人事制度的改革不断深入，新的管理方式和新的管理制度的不断出现，高校人事管理部门面临了很多新的问题。目前很多高校都实行全员聘任制，并且对教师的评价机制也采用绩效考核管理和绩效工资管理的机制。绩效管理的实行增加了人事管理部门的工作量，因此，绩效管理中实行信息化是刻不容缓的事情。论文在充分考虑江西工业工程职业技术学院目前绩效管理的现状基础上，力求在学院绩效管理中实现信息化、无纸化和网络化管理，从而改进全院职工绩效管理的管理方式，提高绩效管理的工作效率。 系统在充分考虑学院目前的软硬件条件的基础上，以实际的业务流程作为基础，采用面向对象的设计方法，开发了绩效管理系统。论文首先介绍了江西工业工...With the deepening of the reform of personnel system in colleges, the new management mode and new management system constantly, the personnel management department in universities is facing many new problems. At present, many universities have implemented the full employment, and the evaluation mechanism of teachers also adopts the mechanism of performance appraisal management and salary managemen...学位：工程硕士院系专业：软件学院_软件工程学号：X201323222

Design and Implementation of Hotel Room Management System

现代交通工具的日益发达，人们生活物质水平的不断提高，工作出差、度假旅游也成为热点，宾馆已逐步承担起人民生活中不可或缺的重要角色。随着宾馆住宿人数的不断增加，宾馆的业务更加繁忙，工作量也逐渐加大。传统的人工管理方法存在着很多弊端：事务繁多、工作效率低；浪费人力物力财力；管理容易出现错误和混乱；难以提供决策的依据，难以提升宾馆的知名度和现代化形象。以往由人工进行管理的模式已不能满足现在消费者的需要，也没办法与高效、快速地处理经营中产生的大量信息数据的需要匹配。开发宾馆客房管理系统，提高宾馆服务质量和管理水平，提高宾馆的管理效率，有十分积极的现实意义和应用价值。 本文从宾馆客房管理的实际需要，对宾...With the development of modern vehicles and improvement of people's living, business trip and vacation travel has become a hot spot, hotel has became increasingly indispensable component in people's lives. With the increasing number of hotel accommodation, the hotel business is more and more busy and the workload is gradually increasing. There are many drawbacks of traditional manual management me...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201323005

Effects of wall temperature on boundary layer stability over a blunt cone at Mach 7.99

Effects of wall temperature on stabilities of hypersonic boundary layer over a 7-degree half-cone-angle blunt cone are studied by using both direct numerical simulation (DNS) and linear stability theory (LST) analysis. Four isothermal wall cases with Tw/T0= 0.5, 0.7, 0.8 and 0.9, as well as an adiabatic wall case are considered. Results of both DNS and LST indicate that wall temperature has significant effects on the growth of disturbance waves. Cooling the surface accelerates unstable Mack II mode waves and decelerates the first mode (Tollmien–Schlichting mode) waves. LST results show that growth rate of the most unstable Mack II mode waves for the cases of cold wall Tw/T0=0.5 and 0.7 are about 45% and 25% larger than that for the adiabatic wall, respectively. Numerical results show that surface cooling modifies the profiles of rdut/dyn and temperature in the boundary layers, and thus changes the stability haracteristic of the boundary layers, and then effects on the growth of unstable waves. The results of DNS indicate that the disturbances with the frequency range from about 119.4 to 179.1 kHz, including the most unstable Mack modes, produce strong mode competition in the downstream region from about 11 to 100 nose radii. And adiabatic wall enhances the amplitudes of disturbance according to the results of DNS, although the LST indicates that the growth rate of the disturbance of cold wall is larger. That because the growth of the disturbance does not only depend on the development of the second unstable mode

Direct numerical simulation of hypersonic boundary layer transition over a blunt cone with a small angle of attack

The direct numerical simulation of boundary layer transition over a 5° half-cone-angle blunt cone is performed. The free-stream Mach number is 6 and the angle of attack is 1°. Random wall blow-and-suction perturbations are used to trigger the transition. Different from the authors’ previous work [Li et al., AIAA J. 46, 2899(2008)], the whole boundary layer flow over the cone is simulated (while in the author’s previous work, only two 45° regions around the leeward and the windward sections are simulated). The transition location on the cone surface is determined through the rapid increase in skin fraction coefficient (Cf). The transition line on the cone surface shows a nonmonotonic curve and the transition is delayed in the range of 0° ≤ θ ≤ 30° (θ = 0° is the leeward section). The mechanism of the delayed transition is studied by using joint frequency spectrum analysis and linear stability theory (LST). It is shown that the growth rates of unstable waves of the second mode are suppressed in the range of 20° ≤ θ ≤ 30°, which leads to the delayed transition location. Very low frequency waves VLFWs� are found in the time series recorded just before the transition location, and the periodic times of VLFWs are about one order larger than those of ordinary Mack second mode waves. Band-pass filter is used to analyze the low frequency waves, and they are deemed as the effect of large scale nonlinear perturbations triggered by LST waves when they are strong enough.The direct numerical simulation of boundary layer transition over a 5° half-cone-angle blunt cone is performed. The free-stream Mach number is 6 and the angle of attack is 1°. Random wall blow-and-suction perturbations are used to trigger the transition. Different from the authors’ previous work [ Li et al., AIAA J. 46, 2899 (2008) ], the whole boundary layer flow over the cone is simulated (while in the author’s previous work, only two 45° regions around the leeward and the windward sections are simulated). The transition location on the cone surface is determined through the rapid increase in skin fraction coefficient (Cf). The transition line on the cone surface shows a nonmonotonic curve and the transition is delayed in the range of 20° ≤ θ ≤ 30° (θ = 0° is the leeward section). The mechanism of the delayed transition is studied by using joint frequency spectrum analysis and linear stability theory (LST). It is shown that the growth rates of unstable waves of the second mode are suppressed in the range of 20° ≤ θ ≤ 30°, which leads to the delayed transition location. Very low frequency waves (VLFWs) are found in the time series recorded just before the transition location, and the periodic times of VLFWs are about one order larger than those of ordinary Mack second mode waves. Band-pass filter is used to analyze the low frequency waves, and they are deemed as the effect of large scale nonlinear perturbations triggered by LST waves when they are strong enough

长期保存起源信息封装技术的比较研究

文章详细介绍了四种国际主流起源信息的封装格式和应用方案，对其封装方法、元数据支持、工具支 持和易用性等进行了对比分析，进一步探讨了四种方法在实际应用中的问题及其应对策略，并建议在实际运用 中，应结合具体场景选择合适的封装格式和封装策略，以达到最佳效果。</p

基于OAIS信息模型的起源信息封装策略研究与应用

［目的/意义］探索设计并实施长期保存系统起源信息封装策略。［方法/过程］首先分析 OAIS 信息 模型的详细组成，然后分析长期保存系统起源封装的特定服务需求，总结国际主流起源封装策略的基本特点， 提出基于 OAIS 信息模型的起源信息封装策略，并利用 Fedora 仓储系统的内容模型 FOXML 进行封装实现。 ［结果/结论］该策略遵循 OAIS 及 PＲEMIS 标准，全面记录起源信息，具有灵活可扩展的特点，但同时管理和使 用相对比较复杂。</p

构建以事件为核心的长期保存系统起源管理框架

［目的/意义］研究建立长期保存系统起源管理框架，通过有效管理起源信息，确保长期保存系统所 存档数据的真实可靠可用。［方法/过程］基于数字对象保存周期进行起源事件定义，基于 OAIS 保存流程进行 起源管理框架设计，以事件为核心进行起源管理功能模型和起源信息模型设计。［结果/结论］初步完成基于事 件的保存系统起源管理框架的设计，既遵循保存领域的相关标准，同时兼顾实践需求，对长期保存系统具有很 好的普适性和可行性，但其在有效性和实用性方面还有待进一步验证。</p

构建以事件为核心的长期保存系统起源管理框架

［目的/意义］研究建立长期保存系统起源管理框架，通过有效管理起源信息，确保长期保存系统所 存档数据的真实可靠可用。［方法/过程］基于数字对象保存周期进行起源事件定义，基于 OAIS 保存流程进行 起源管理框架设计，以事件为核心进行起源管理功能模型和起源信息模型设计。［结果/结论］初步完成基于事 件的保存系统起源管理框架的设计，既遵循保存领域的相关标准，同时兼顾实践需求，对长期保存系统具有很 好的普适性和可行性，但其在有效性和实用性方面还有待进一步验证。</p