274 research outputs found
Design and Implementation of Student Management Information System for an University
伴随着时代的发展,教师、学生人数不断增长,校园活动日益复杂化,不管是学校的决策者和管理者、学生来说,能帮助全校师生对在校学习生活提供全方位的保障,学生、教师和辅导员以及其他学生工作者进行有效的管理以及信息维护、为学校的组织活动和同学们的学习生活等学生管理工作提供便利的管理系统显得尤为重要。学生信息管理系统也逐渐成为一个教育单位不可缺少的部分。本文主要完成了以下工作: (1)对学生管理工作的流程、注意事项、实际需求等进行了深入而全面的调查,在调查期间大量地阅读学院信息化管理的文档以及与教务处主管学生工作的老师进行交流,全面地掌握学院学生管理工作的各个细节,为后期的系统设计打下坚实的基础。 (...With the development of The Times, the teachers, a growing number of students, campus activities is increasingly complicated, whether the school decision makers and managers, students, can help the entire school teachers and students to study in school life provides the omni-directional safeguard, students, teachers and counselors, and other workers for effective management, and information mainte...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201323118
The Design and Implementation of Telecom Customer Retention Based on Data Mining Technology
数据挖掘是目前人工智能和数据库研究领域的一个热点问题,企业数据经过高度自动化地分析,运用归纳法进行推理,挖掘出潜在的模式,帮助决策人员调整市场策略,降低风险,做出符合市场的决策。中国通信业在经历了多次拆分重组后,打破了垄断格局,形成了三家竞争的格局。在移动通信市场竞争日益白热化的环境下,各电信运营商在积极抢夺市场份额的过程中,一方面千方百计发展新增市场,另一方面高度重视存量市场的稳定,将数据挖掘技术应用于客户关系管理,深入开展存量客户的流失预警、关怀维系及价值提升活动。 本文基于对目前我国通信行业市场发展、客户维系现状以及数据挖掘技术在各领域客户关系管理中的主要应用,对某省电信运营商的客户维...Data mining is the currently hot topic of artificial intelligence and database research in the field, highly automated analysis of corporate data, make inductive reasoning, dig out potential models to help decision-makers to adjust marketing strategies, reduce risk, make the right decisions.Communications industry in China has experienced a number of split reorganization, breaking the monopoly, fo...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201223025
从族谱看清代闽南赴台移民家庭——以《南靖书洋书山派萧氏族谱》为蓝本分析
清代是福建移居台湾的高峰期,本文以《南靖书洋书山派萧氏族谱》为蓝本进行分析来展现一个闽南家庭在清代的移民历史和家庭史,以期寻到一些当时移民家庭的结构和特征,使我们能够探究由于移民所引发的家庭结构的复杂性,以及随之而来的世系和财产分配等一系列问题
Practice of pharmacy consultation on dosage regimen for pediatric epilepsy patient with PPK model
目的 为优化癫痫患儿卡马西平和丙戊酸给药方案提供参考。方法 药师参与1例脑外伤术后癫痫患儿的药学会诊,总结分析其使用卡马西平和丙戊酸血药浓度异常的原因,应用群体药动学模型为患儿调整给药剂量,并评价笔者团队所建模型的预测能力。结果 患儿病情得到了有效控制。结论 药师应用群体药动学模型优化抗癫痫药物治疗方案,为临床合理用药提供参考。Objective In order to provide a reference for optimizing the dosage regimen of carbamazepine and valproate in pediatric epilepsy patients.Methods Pharmacist consulted one pediatric epilepsy patient with traumatic brain injury for post operation epilepsy treatments. The abnormal plasma concentration of carbamazepine and valproic acid was analyzed with the population pharmacokinetic (PPK) model built by this team. New medication regimen was proposed and the predictive capability of this model was evaluated.Results Seizures in this patient have been effectively controlled. Conclusion Pharmacist can optimize the antiepileptic drug treatment with PPK model and achieve rational drug use clinically
丙氨酰谷氨酰胺注射液的临床应用调查及合理性评价
目的调查某院丙氨酰谷氨酰胺注射液的使用情况,评价其合理性,以促进临床合理使用。方法调取某院2017年7—12月所有住院使用丙氨酰谷氨酰胺注射液的2 357份病历并统计分析,随机抽取每月30份共180份病历进行合理性评价。结果该院丙氨酰谷氨酰胺使用率为4.7%,使用金额占药品总金额的0.84%。180份点评的病历不合理率为27.2%,主要存在无适应证用药(61.2%)和给药剂量不合理(30.6%)。结论丙氨酰谷氨酰胺的使用存在一定的不合理性,建议制定合理使用规范加强管理,促进临床合理用药
临床药师开展药学服务的切入点
目的促进临床药师更好开展药学服务工作。方法总结临床药师临床实践的经验,并对部分典型病例进行分析。结果临床药师通过药学问诊和医嘱审核参与患者个体化用药,关注药品不良反应和药物相互作用,提供药学信息,对患者进行用药指导和出院用药教育,参与医师门诊开展药学服务。结论临床药师提供药学服务应找准切入点,减少工作盲目性
基于特征模型的主被动一体化隔振平台控制分析
在各类飞行器飞行的过程中,飞行器载荷会受到不同频段的外扰影响,出现拍照模糊不清楚等问题,建立主被动一体化隔振平台模型,阐述使用特征模型思想对该平台主动隔振系统进行控制,抑制台面振动。选取超磁致伸缩作动器作为主动控制元件,建立主被动一体化隔振平台模型;根据力跟踪的平台模型设计了基于位移跟踪的平台模型;建立位移跟踪隔振平台的特征模型,并将特征模型估计所得的状态变量和黄金分割控制、逻辑微分控制相结合,对隔振平台的主动隔振控制系统进行控制;通过Simulink仿真验证了控制器的有效性,并与传统的PID控制结果进行对比,证明了该控制器的优越性。国家自然科学基金(61603320;61333008;61733017;61273199
ELASTOPLASTIC NUMERICAL SUBSTRUCTURE METHOD OF REINFORCED CONCRETE FRAME STRUCTURES
大型复杂土木工程结构在地震作用下失效破坏可能由部分关键构件严重损伤破坏导致,而大部分构件仍处于弹性或小变形状态。该类结构的地震损伤和破坏全过程分析涉及超大规模系统强非线性动力分析,目前尚缺乏能很好兼顾效率和精度的计算理论,基于此,该文提出一种新型高效且实用的弹塑性数值子结构理论和计算方法,将大型复杂结构系统的大规模非线性计算问题转化为整体结构适度规模的线弹性分析和数量与规模均较小的局部隔离子结构非线性分析,其中,线弹性整体结构刚度矩阵的集成及LU三角分解仅需进行一次,大大提高计算效率;少数屈服构件的子结构非线性分析采用精细化有限元模型或不同类型单元模型,精确模拟构件局部损伤破坏机理,有效提高结构整体的计算精度。最后通过对一榀平面钢筋混凝土框架结构进行地震动力弹塑性数值子结构方法分析,验证其高效性与精确性。During the seismic process of earthquakes, larger-scale civil engineering structures might fail due to the serious damage to some key structural members, whereas most structural components might remain elastic and experience small deformation. It is a challenging task to simulate the behavior of such structural systems due to the trade-off between computational efficiency and numerical accuracy. This paper presents an efficient and practical elastoplastic numerical substructure method, in which the whole structural seismic analysis is divided into linear elastic analysis of a master structure and nonlinear analysis of limited numbers of small-scale substructures, to balance the computational efficiency and numerical accuracy. During the linear elastic analysis of the master structure, the formation and LU triangular decomposition need to be done only once as the equivalent stiffness matrix remains constant, resulting in high computational efficiency of the master structure. Rational or refined models can be used in substructure systems to model the local damage mechanism, improving the numerical accuracy of the whole structure. Seismic analysis of a reinforced concrete frame structure is performed to verify the novel numerical substructure method.国家自然科学基金项目(51261120376;91315301-12
考虑P-⊿效应的框架结构弹塑性数值子结构分析
几何非线性是土木工程结构在强震作用下动力时程分析过程中必要的考虑因素。该文基于数值子结构方法,结合平面Euler-Bernoulli梁柱单元的几何大变形理论,将平面框架结构的非线性分析转化为线弹性主结构的弹性分析,并提出材料和几何非线性修正力项,作为等效为外荷载项施加于主结构以考虑结构的双非线性。最后,对一平面钢框架结构进行地震动力时程分析,分析结果表明考虑了双非线性的数值子结构方法具有良好的精确性与高效性;同时,几何非线性对结构动力响应具有重要影响。国家自然科学基金项目(51261120376;91315301-12
REFINED ASEISMIC ANALYSIS OF LOW-DUCTILITY RC FRAME BUILDING BASED ON NUMERICAL SUBSTRUCTURE METHOD
该文以钢筋混凝土低延性框架结构为分析对象,总结该类结构及相关构件数值分析研究现状;基于桁架模型研究柱及节点组合体等关键构件的精细模型化思路与方法,并分别采用试验予以验证;以此为基础,借助在Open Sees软件中开发的数值子结构方法及平台,以汶川地震中严重受损的多层钢筋混凝土框架结构为对象建立精细化数值子结构模型,通过局部构件的精细分析研究其在强震作用下的抗震性能及失效模式。经该文研究表明采用桁架模型建立易于发生脆性破坏的柱及节点组合体等关键构件的精细化模型合理且准确;选择数值稳定且更适用的精细化模型与数值子结构平台分析涉及不同类型且易发生脆性破坏的低延性结构更具优势;针对低延性框架,不宜采用位移角限值作为结构性能评估的唯一判断依据,在分析中需考虑未达到目标位移前结构可能发生的脆性破坏模式。This paper firstly provides a short summary on the current research status on the numerical studying of low-ductility reinforced concrete (RC) frames and their related components, such as columns and joint subassemblages. Then detailed numerical modeling approaches of these key components using a truss model are provided and evaluated using several experiments. Finally, a numerical substructure method (NSM) developed in OpenSees is employed to build the detailed substructure model for analyzing a damaged RC frame subjected to Wenchuan Earthquake, and its aseismic performance and failure mode are studied in a detailed way according to the local performance. This study indicates that: the truss model performs well in simulating the nonlinear behaviors of columns and joints, especially to predict the brittle failures; numerical substructure method has great advantages, such as good numerical stability and applicable refined models, to study the performance of low-ductility RC structures; from the analytical results ofdarnaged RC frame, it can be found that displacement or inter-story drift should not be the only criterion to evaluate the low-ductility structures, and instead the possible brittle failures must be considered in the aseismic analysis.国家自然科学基金项目(51261120376,91315301-12
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