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Search Results: 1 - 10 of 262572 matches for " 刘建 "
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管理设计——解决管理理论与实践隔阂的有效途径
Management Design—The Practical Way to Solve the Gap between the Theory and the Practice of Management
 [PDF]

, 凌峰
Management Science and Engineering (MSE) , 2012, DOI: 10.12677/mse.2012.11001
Abstract: 管理科学知识呈现“管理理论丛林”之势后,面对浩瀚如烟的管理知识,人们在应用这些知识时经常是无所适从和无法选择,因此就产生了相应的“丛林迷失效应”,管理的理论与管理实践需求之间的隔阂愈来愈深、渐行渐远。本文从管理知识的研制与管理活动的实际需求两方面切入,对此现象进行系统分析,再结合我们二十多年来在管理设计研究与实践方面所做的工作,试图从设计科学的视角探索跨跃这一隔阂的解决途径,以期能对构建管理设计的理论知识体系做些贡献。
After the scientific knowledge of management has become “the management theory jungle”, peo-ple who benefit from management knowledge will meet a “lost jungle effect.” In the face of more and more management knowledge, people sometimes feel confused and unable to choose. In practice, the gap between the theory and the practice of management occurred more and more deeply and the two sides are drifting fur-ther and further apart. This article probes into the causes of this phenomenon from both sides of management knowledge research and practical demand of management activity, whereby on the basis of this analysis using the concept of “design science” attempts to explore the solution which can leap the barrier. We hope to ex-plore the issues on the design problems of “management engineering”.
A 股私募基金业绩持续能力检验—以阳光私募为例
Test of Performance Persistence of A Share Private Funds—Evidence from Sunshine Private Funds
 [PDF]

建和,
Modern Management (MM) , 2011, DOI: 10.12677/mm.2011.13025
Abstract: 业绩持续性作为评价基金业绩的一种方法,也成为考察基金经理投资能力的一种手段,但是目前相关A 股私募基金的业绩持续能力的检验成果却较少。本文以阳光私募(信托投资计划)这一A 股私募基金为研究对象,采用非参数检验和参数检验的方法,对其进行了风险调整收益排名的业绩持续性检验和跨周期的毛收益排名的持续能力考察。最终发现,阳光私募的中短期毛收益排名的业绩持续性较强,但风险调整收益排名的业绩持续性较弱。这说明A 股私募基金经理的投资业绩与其投资组合所承担的风险水平关系密切。
Performance persistence test is one way to value fund performance or to study fund manager’s investment capacity. But there are less empirical studies on performance persistence of A share private funds. This paper uses methods of non-parametric test and parametric test and tests performance persistence of A share private funds with data of sunshine private funds (Trust Investment Plans). The results show that inter-period performance persistence of A share private funds is strong but short run persistence is poor, and it is reasonable to believe A share private fund performance is closely related to corresponding risk.
微分算子和直线拟合在十字丝中心定位中的应用
Application of Differential Operator and Linear Fitting in Crosshair Center Pinpoint
 [PDF]

博超,
Software Engineering and Applications (SEA) , 2015, DOI: 10.12677/SEA.2015.43007
Abstract: 为了满足镜头中心偏差测量中十字丝中心精确定位的要求,本文提出了一种基于微分算子和直线拟合的十字丝中心定位方法。根据十字丝成像的特殊性,首先,使用微分算子分别在X方向和Y方向求差分得到十字丝X方向和Y方向的边缘。接着,采用正交最小二乘法将刚刚得到的X方向和Y方向的边缘分别拟合为X方向和Y方向上的两条直线方程。最后,计算两条拟合直线的交点作为十字丝的中心。实验结果表明:在分辨率为1292 × 964像元为3.75 μm × 3.75 μm的CCD采集到的图像中十字丝中心的定位精度小于1个像素,在镜头中心偏差测量过程中其定位精度小于2 μm。基本满足镜头中心偏差测量对十字丝中心定位精度高、抗干扰能力强、重复性好等要求。
In order to satisfy the requirement of crosshair center pinpoint for lens decentration measurement, a crosshair center pinpoint method based on differential operator and linear fitting is proposed. First, the edges of crosshair in both X and Y directions can be obtained by using differential operator to compute the difference in both X and Y directions. Then, two linear equations in both X and Y directions are fitted with orthogonal least square method using the edges obtained. Finally, the intersection point of the two linear equations is used as the crosshair center. Experimental results indicate that the precision of the crosshair center pinpoint is less than one pixel in the images grabbed by the CCD whose resoluntion is 1292 × 964 pixel and pixel size is 3.75 μm × 3.75 μm and the precision of pinpoint is less than 2 μm in lens decentration measurement. It can satisfy the system requirements of non-contact, online, real time, higher precision and rapid speed, as well as strong anti-jamming and stabilization.
单管分喷法在地基加固中的应用

地质与勘探 , 1998,
Abstract: 介绍了单管分喷法在地基加固中的施工技术、工艺。该方法具有设备简单、质量可靠、工期短、造价低等优点。
稻田种植春玉米经济效益及高效耦合技术研究

中国生态农业学报 , 2004,
Abstract: 长期定位试验研究结果表明,与常规麦一稻二熟制相比稻田种植春玉米的麦/玉米一稻三熟制年产量为1.4254万kg/hm2,增产率17.69%;有机投能、无机投能和总投能分别高3.54%、8.37%和7.90%,生物量和籽粒能量产出分别高16.99%和15.12%,能量产投比较高;N、P2O和K20等养分盈亏率增大,土壤有机质盈余较多,盈亏率为81.18%;新增纯收益率22.42%,边际成本报酬率3.33。稻田种植春玉米高效耦合技术包括部分放开冬春茬,稻田冬春季改小麦为菜果经济作物;春玉米采用两段覆膜种植技术,其产量>8250kg/hm2的综合措施为种植密度7920~8990株/hm2,施N量288.6~352.4kg/hm2,玉米11~12叶展开时以304.6~498.0mg/kg浓度乙烯利化学控制叶面喷施;后季稻实施塑盘旱育秧大苗抛裁技术,其产量>7500kg/hm2的综合措施为在培育>35d秧龄壮秧基础上,基本苗225~240万株/hm2,施N量225~255kg/hm2。
长岭凹陷地热史模拟

天然气工业 , 2004,
Abstract: ?盆地属中生代时期发育的断坳叠置型盆地。长岭凹陷经历了隆起阶段、断陷发育阶段、坳陷发育阶段、萎缩阶段。在盆地地史模拟的基础上,选取适当的热史参数,建立热史模型,进行盆地地热史模拟。根据地层温度,ro值,包裹体均一温度,孢粉颜色,磷灰石裂变径迹等实测值来校正热史参数。模拟结果表明:主要烃源岩青山口组高地温场延续时间长,但强度不断下降。在65ma时,经历了最高古地温。温度一般在110~120℃之间,最高为150℃。现今,其地温梯度以3.0℃/100m为主,地温在40~120℃之间。青山口组以生油为主,同时有少量伴生气,主要生烃期在65ma以后。
公共图书馆豆瓣社区应用调查与分析

图书馆杂志 , 2013,
Abstract: ?对国内公共图书馆利用豆瓣社区开展服务的现状进行了调查,通过对创建时间、服务内容、服务功能和活跃度等进行分析,吸取有益的经验,发现存在的问题,为正在或想要利用豆瓣社区开展服务工作的公共图书馆提出若干建议。
我国运动员成长阶段的委托代理风险及其应对

天津体育学院学报 , 2010,
Abstract: 以委托代理理论为基础,根据运动员培养过程的特殊性,系统分析在我国竞技体育领域围绕运动员培养问题所产生的国家与省级体育部门之间(包括部分职业俱乐部)、省级体育部门与所辖地方体育部门之间、各级体育部门与教练员之间,以及运动员与教练员之间的4层委托代理关系。从理论层面深入地分析这些委托代理关系所产生的委托代理问题,同时以几个典型的个案为例对这些委托代理问题所产生的委托代理风险的形成机制进行解释,并针对运动员的委托代理风险提出应对策略。
改革开放与科技情报服务

图书情报工作 , 1993,
Abstract: ?自党的十一届三中全会召开至十四大闭幕,历经十余年,我国的经济体制改革完成了一个大的周期,这就是由计划经济体系转变为社会主义市场经济体系。造成的直接结果是国家经济活动的决策主体发生重要位移,即由各级政府转移到各种形式的企业。以辅助决策为己任的科技情报系统,其服务对象也由以政府部门和研究机构为主转为以经济实体为主,并藉以减轻因自身由社会公益型单位向服务经营型机构过渡所带来的资金压力。随着服务对象的变更,传统的情报服务内容和方式受到了严重挑战。
我国中小学校学生欺凌行为及其治理
,
- , 2017,
Abstract: 社会转型期,我国中小学校学生欺凌行为日趋严重。欺凌形式多样,范围广泛,手段恶劣,后果严重,具有明显的全面性、多样性、常态性、隐蔽性等特征。学生欺凌行为形成的主要原因有社会文化失范、行为规范失序、主体人格失当、道德与法制教育失效、共同作用机制失衡等。祛除学生欺凌行为,须以全纳的视角构建多元治理体系,从培养学生“美德”、关注“重要他人”、设立“反欺凌机构”、构建“学校道德共同体”、建立“社会支持系统”、形塑“社会经典文化”、秉持“信仰与梦想”等方面做起。
During the period of social transition in China,the bullying among students in primary and middleschools are becoming increasingly serious:it takes various forms,impacts a wide range of people,involveswicked means,and leads to serious consequences. The bullying is mainly caused by such factors as the disorderin social culture and code of behavior,the drawback of personality of some students,the limited effect ofmoral and legal educations,and the imbalance in the mechanism governing interpersonal interactions. Tocope with students’ bullying,a multiple treatment system should be constructed from different perspectives,which include cultivating students“ virtues”,caring about“ the important others”,setting up“ an anti-bullyingagency”,constructing“ a school community”,building“ a social support system”,restoring“ the classic socialculture”,and enabling students to adhere to“ healthy beliefs and the dreams
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