琐议钢琴练习的技巧与方法

近年来,钢琴艺术在我国越来越受到关注,已成为人们开发智力,提高修养和陶冶情操的重要途径,而要熟练掌握这一中西文化融合的艺术,需要花费很多精力,掌握一定的方法技巧,是走向成功的捷径。     

涂附磨具单位面积CaCO3含量分析方法的改进

以铜试剂代替氰化物作掩蔽剂 ,用EDTA容量法测定涂附磨具单位面积CaCO3 含量 ,获得了满意的效果。     

群体决策支持系统的模型库研究

通过对传统模型及模型库的分析,指出其在网络环境下具有难以实现共享的不足.从模型在网络上共享及其软件实现的角度,在分布式网络数据库环境下,利用分布式网络数据库技术,设计了模型库的结构和机理;提出了模型库的构造方法;对模型库的内部控制方式进行了设计;提出了模型库对群体决策的支持方式;客户端的决策成员对模型库的共享与访问方法.     

GMM tests for the Katz family of distributions

Generalized method of moments (GMM) is used to develop tests for discriminating discrete distributions among the two-parameter family of Katz distributions. Relationships involving moments are exploited to obtain identifying and over-identifying restrictions. The asymptotic relative efficiencies of tests based on GMM are analyzed using the local power approach and the approximate Bahadur efficiency. The paper also gives results of Monte Carlo experiments designed to check the validity of the theoretical findings and to shed light on the small sample properties of the proposed tests. Extensions of the results to compound Poisson alternative hypotheses are discussed.     

对我国普通高校学生心理健康问题的调研

运用反映人类心理健康状况的CES-D、SAS和SCL-90自评量表的测试结果表明,我国普通高校学生的心理健康状况不容乐观,20.4%的大学生有轻度心理障碍,8.6%的学生有中度心理障碍,3.2%的学生患有心理疾病,这应当引起学校教育的高度重视和全社会的广泛关注。     

“法律基础”课教学法的改革与实践

在法律基础课教学活动中 ,充分强调学生的主体作用 ,鼓励学生参与到每个教学环节。老师首先指出重点 ,引导阅读 ,然后指导学生讨论、讲解 ,最后总结 ,回答提问。其核心思想是教学活动中师生的“互动” ,提高学生分析问题和解决问题的能力     

谈四六级考试改革后的课堂教学

文章主要从教学内容、教学模式、课时及测评等方面,探讨了四六级考试改革后的一些教学应对措施,以期对今后大学英语教学质量的提高有一定的促进作用。     

A Risk-Based Method for Modeling Traffic Fatalities

We describe a risk-based analytical framework for estimating traffic fatalities that combines the probability of a crash and the probability of fatality in the event of a crash. As an illustrative application, we use the methodology to explore the role of vehicle mix and vehicle prevalence on long-run fatality trends for a range of transportation growth scenarios that may be relevant to developing societies. We assume crash rates between different road users are proportional to their roadway use and estimate case fatality ratios (CFRs) for the different vehicle-vehicle and vehicle-pedestrian combinations. We find that in the absence of road safety interventions, the historical trend of initially rising and then falling fatalities observed in industrialized nations occurred only if motorization was through car ownership. In all other cases studied (scenarios dominated by scooter use, bus use, and mixed use), traffic fatalities rose monotonically. Fatalities per vehicle had a falling trend similar to that observed in historical data from industrialized nations. Regional adaptations of the model validated with local data can be used to evaluate the impacts of transportation planning and safety interventions, such as helmets, seat belts, and enforcement of traffic laws, on traffic fatalities.     

Dementia Problem Behavior and the Production of Informal Caregiving Services

Informal caregivers of individuals with Alzheimer's disease spend a considerable amount of time providing care. In this paper, we use Grossman's health production and Becker's time allocation models to develop a model of informal care provision to elderly dementia patients. In our model, time inputs produce caregiving services, which provides utility to the caregiver, but reduces leisure. We assume that time is less productive of services on the margin as the disease progresses. In this framework, an increase in patients' disease severity does not necessarily increase informal caregiver time input. The cost of formal care establishes a reservation price for informal caregiving. When the costs of informal caregiving rise above this reservation level, the patient is institutionalized. We test empirically the effect of deterioration in the patients' condition, proxied by both disease severity and dementia problem behavior, on informal caregiving time. We find that dementia-related problem behaviors and functional limitations significantly increase inputs of informal caregiving time. Patients' problem behavior exerts a modifying effect on functional limitations, and patients' comorbidities have no effect on informal caregiving time.     

工程建设项目投资控制

论述投资控制的关键环节,提出投资控制工作的实施要点,阐明投资控制工作的必要性、可行性和重大意义.