管理信息系统的报表统计策略     

黄艳  谭同德  朱会东  唐浩 《南阳师范学院学报》2003,2(12):52-54

总结了在管理信息系统开发中一般报表统计的常规策略，并特别针对育龄妇女管理信息系统中报表统计处理数据量大、统计速度慢等难点和关键问题，给出其报表统计模块的具体实现方法。  相似文献   

Valuation struggles over pricing – determining the worth of wind power     

Trine Pallesen 《Journal of Cultural Economy》2016,9(6):527-540

Public policies such as feed-in tariffs have been widely introduced to stimulate the development of renewable energies, and sustain a decarbonisation of the electricity sector. Proponents argue that these governance instruments safeguard public goods such as the climate – yet they are accused of creating political markets, and political prices, here understood as market distortion. This paper studies the ‘politics’ of pricing by following the adoption of the first feed-in tariff in France. Pricing as a way of achieving non-economic ends, such as climate mitigation, brings the values of several public goods into play, all the while prompting a translation of these values into a single price. Following the struggles over the pricing of wind power in the early 2000s, the study illustrates that rather than a pollution of the market sphere by that of politics, a politics of pricing can be observed in four distinct struggles: namely the framing of the public interest; valuation as the articulation of the future; the possible agencies of governance; and role of valuation methods and calculations.  相似文献   

DNA生物大分子的动力学特性与生物功能(Ⅱ)     

庞小峰 《商丘师范学院学报》1996,(Z2)

对ＤＮＡ中激发的孤立子进行了分类，同时也研究了它的一些特点．我们着重研究了用此理论解释ＤＮＡ的基本生物功能──复制和转录及遗传与变异等问题．  相似文献   

Hip and upper extremity kinematics in youth baseball pitchers     

Taylor Holt 《Journal of sports sciences》2016,34(9):856-861

The purpose of this study was to examine the relationship between dynamic hip rotational range of motion and upper extremity kinematics during baseball pitching. Thirty-one youth baseball pitchers (10.87 ± 0.92 years; 150.03 ± 5.48 cm; 44.83 ± 8.04 kg) participated. A strong correlation was found between stance hip rotation and scapular upward rotation at maximum shoulder external rotation (r = 0.531, P = 0.002) and at ball release (r = 0.536, P = 0.002). No statistically significant correlations were found between dynamic hip rotational range of motion and passive hip range of motion. Hip range of motion deficits can constrain pelvis rotation and limit energy generation in the lower extremities. Shoulder pathomechanics can then develop as greater responsibility is placed on the shoulder to generate the energy lost from the proximal segments, increasing risk of upper extremity injury. Additionally, it appears that passive seated measurements of hip range of motion may not accurately reflect the dynamic range of motion of the hips through the progression of the pitch cycle.  相似文献   

Timescales for exploratory tactical behaviour in football small-sided games     

Angel Ric  Robert Hristovski  Bruno Gonçalves  Lorena Torres  Jaime Sampaio  Carlota Torrents 《Journal of sports sciences》2016,34(18):1723-1730

The aim of this study was to identify the dynamics of tactical behaviour emerging on different timescales in football small-sided games and to quantify short- and long-term exploratory behaviour according to the number of opponents. Two teams of four professional male footballers played small-sided games against two different teams with a variable number of opponents (3, 5 and 7). Data were collected using a combination of systematic observation and a non-differential global positioning system (15 Hz). The temporal diversity and structural flexibility of the players were determined by calculating the dynamic overlap order parameter q, entropy and trapping strength. Analysis of the exploratory dynamics revealed two different timescales, forming a different metastable landscape of action for each constraint. Fast dynamics lasted on average a few seconds and consisted of changes in tactical patterns. The long timescale corresponded to the shared tasks of offence and defence lasting tens of seconds. The players’ tactical diversity decreased with an increasing number of opponents, especially in defence. Manipulating numerical imbalance is likely to promote changes in the diversity, unpredictability and flexibility of tactical solutions. The fact that the temporally nested structure of constraints shaped the emergence of tactical behaviour provides a new rationale for practice task design. The manipulation of numerical imbalance on the timescale of a few tens of seconds, on which the exploratory behaviour of players saturates, may help coaches to optimise the exploratory efficiency of the small-sided games.  相似文献   

C语言的指针   总被引：1，自引：0，他引：1  

杨素英 《大连大学学报》1997,(2)

以具体实例详细介绍了C语言指针复杂说明的理解方法;分析指针使用中的常见错误及解决方法;利用指针和动态分配函数实现程序运行中堆的自由空间的支配和释放。  相似文献   

一个基于两个数学难题的签名方案的改进     

刘益和 《内江师范学院学报》2005,20(2):35-36

对邵祖华等提出的基于两个数学难题的签名方案进行了改进，改进后的方案更具有安全性。  相似文献   

Visual Basic中的菜单设计原则和编程技巧     

方园 《北京工业职业技术学院学报》2003,(4)

论述标准Windows应用程序界面设计的基本原则,主要是菜单的设计原则。以及在VB环境中菜单制作的方法和动态菜单实现。  相似文献   

动态地址数据库服务器的连接实现     

黄宏本 《广西大学梧州分校学报》2005,15(3):87-90

本文首先介绍目前对连接动态地址数据库服务器技术的需求,接着给出一种连接构架于动态地址上的数据库服务器的实现方法,并用Delphi实现通过.  相似文献   

MBO定价问题的思考   总被引：3，自引：0，他引：3  

邱俊 《蒙自师范高等专科学校学报》2003,5(4):18-21

2003年3月27日,财政部发至原国家经贸委企业司关于《国有企业改革有关问题的复函》(财企便函【2003】9号)。文件建议:"在相关法规制度未完善之前,对采取管理层收购(包括上市和非上市公司)的行为予以暂停受理和审批,待有关部门研究提出相关措施后再作决定."这样就意味着曾经热得发烫的MBO将暂告一段落.  相似文献