孔雀河流域天然植物多样性与地下水关系

根据孔雀河畔59块样地的调查数据.应用重要值计算了天然植物多样性指数、均匀度指数、丰富度指数、优势度指数,并分析了流域天然植物多样性与地下水的关系.结果表明:①孔雀河上游至下游,土壤pH值增加,在土壤pH<8.56时,植物丰富度指数、Simpson指数、Shannon-Wiener指数、Pielou指数增加,植物种类、数目及平均盖度增加,长势良好,反之则降低;②随离河距离增加,地下水埋深和土壤盐分含量增加,离河50m处,植物多样性指数较大,离河300m处植物多样性指数较低,离河650m处由于有人工灌溉,多样性指数又较大;③地下水埋深、土壤盐分、土壤pH值是影响孔雀河畔植物多样性变化的主导因素,地下水埋深<3.6m、土壤pH值<8.56是适合天然植物生长的双重临界指标,低地下冰埋深、高土壤pH值和重度盐渍化是植物多样性低的诱因,对下游河道进行间歇性输水和对周边有天然植物分布的农田适时大水漫灌,将有利于河畔脆弱生态系统的保护.     

A multiple-dose pharmacokinetics of polyethylene glycol recombinant human interleukin-6 (PEG-rhIL-6) in rats

Radiation therapy has been widely applied in cancer treatment. However, it often causes thrombocytopenia (deficiency of white blood cells) as an adverse effect. Recombinant human interleukin-6 (rhIL-6) has been found to be a very effective way against this thrombocytopenia, but IL-6 has low stability in blood, which reduces its efficacy. To increases the stability and half-life of rhIL-6, it was modified by polyethylene glycol (PEG). The pharmacokinetics and the tissue distribution of PEG-rhIL-6 labeled with ¹²⁵I were examined after subcutaneous injection in rats. The pharmacokinetic pattern of PEG-rhIL-6 was defined with linear-kinetics, and we fitted a one-compartment model with half-lives of 10.44–11.37 h (absorption, t _{1/2K a}) and 19.77–21.53 h (elimination, t _1/2Ke), and peak concentrations at 20.51–21.96 h (t _peak) in rats. Half-lives and t _peak of PEG-rhIL-6 were longer than those of rhIL-6 previously reported. In the present study, for deposition of PEG-rhIL-6 in rats, the tissue distribution examination showed that blood was the major organ involved, rather than liver. However, as to the elimination of PEG-rhIL-6, the major organ was the kidney. The excretion fraction of the injection dose recovered from urine was 23.32% at 192 h after subcutaneous administration. Less than 6% of PEG-rhIL-6 was eliminated via the feces at 192 h. These results indicate that PEG-rhIL-6 is a good candidate drug formulation for patients with cancer.     

娱乐式营销推广出版物品牌的策略研究

在娱乐经济的时代背景下,针对大众出版物的娱态营销趋势,对现阶段大众出版物的娱态营销策略做系统性的研究,创新出适合于本土图书出版市场的娱态营销模式。     

Profiles of Organizational Culture and Effective Schools∗

This study intends to investigate how school organizational culture is related to important organizational characteristics and observe how the profiles of strong culture‐effective schools are different from those of weak culture‐ineffective schools in terms of organizational variables (such as principal's leadership, organizational structure, and teachers’ social interactions), teachers’ job attitudes, and school effectiveness criteria. It is a cross‐sectional survey research involving 54 randomly sampled Hong Kong secondary schools and 588 teachers. The unit of analysis is the school.

Organizational ideology index was found to be substantially correlated with schools’ perceived organizational effectiveness. Among the 10 measures of these organizational variables, teachers’ esprit and principal's charismatic leadership can contribute substantially to the prediction of school's strength of organizational culture. The organizational profile of perceived strong culture‐effective schools is contrastingly different from that of perceived weak culture‐ineffective schools. The findings suggest that difference in organizational culture can be reflected at least in three overt levels: 1. organizational level in terms of principal's leadership behaviors, organizational formalization and participation, and teachers’ social norms; 2. teachers’ attitudinal level in terms of organizational commitment, social job satisfaction, intrinsic job satisfaction, and influence job satisfaction; and 3. school effectiveness level in terms of perceived overall organizational effectiveness and academic achievements in public examinations.

The findings reinforce the importance of organizational culture to the ongoing effort and discussion of school improvement and school effectiveness.

     

审视体育市场中的诚信问题——莫让“公地悲剧”在体育市场上演

目前,我国处于社会转型期,在许多领域出现了不同程度的信用危机.体育产业刚刚起步,也暴露出诚信缺失问题,"公地悲剧"随时可能发生.从体育企业诚信文化建设及外部环境建设分析如何搭建体育市场诚信平台.     

成都市区健身俱乐部市场需求状况的分析与研究

本研究以成都市区部分经营性健身俱乐部消费者为研究对象,运用社会学调查方法和描述统计分析、频数分析等数理统计法对成都市区健身俱乐部需求市场进行定量分析,找出影响成都市区健身俱乐部市场需求问题的因素并提出发展策略。     

课堂教学诊断：“后新课改” 时代课堂的有效干预行动

第8 次基础教学课程改革自新世纪启动,至今已进行了十余年,可以算进入了“后新课 改”时期。“后新课改”时代要求重视学校的组织文化建设,课堂教学诊断采用教育专家引领、学校领 导支持、教师同行帮助、执教教师为主、所教学生配合、家长协助为干预的机制,其本质是一种课堂 文化的干预行动,具有人本性、发展性、教育性、诊断性与功效性等特征。搞清诊断主体、分清诊断类 型与层次、掌握诊断技术、遵循操作过程是课堂教学诊断研究的关键要素,通过对课堂物质文化、课 堂制度文化、课堂行为文化和课堂精神文化的诊断,采行分层分类诊断、主体协同诊断与建章立制 等策略,是实现高效课堂的重要保障。     

二次学术文献编辑素质问题探讨

二次学术文献是专门搜集、梳理和检阅并控制一次学术文献的文献,其意义和价值还在于弥补一次学术文献的缺陷.二次学术文献编辑的素质要求,既有一般编辑的素质要求,更有自己的特殊素质要求.关于二次学术文献编辑素质的问题,至今还很少有人问津.作此探讨,目的是为了引起人们对此问题的关注.     

关于网络群体性事件的新思考

当前对于“网络群体性事件”并没有形成统一的看法,很多人把它界定为一种负面行为．本文指出,这种认识和应对方式是否合适,值得探讨;遂从其内涵、积极因素、应对等方面提出对于网络群体性事件的新思考．