食用花生油热值的测定

利用 WZR-1A 型精密微电脑量热计系统地测量了食用花生油的恒容燃烧热。准确称取一定量的基准物质,放入氧弹中充入高压纯氧,将测试样品在氧弹中完全燃烧,并记录燃烧前后时间与量热计温度变化数据,运用仪器所带的数据处理软件计算出仪器热容量,然后再准确称取一定量的食用花生油,装入已准确测定热值的燃烧胶囊中后,将测试数据用自编的计算机处理程序对测试数据处理,从而得到食用花生油的燃烧热值。此法准确、简便、实用,可用于日常检测工作。     

Weighted Mean Survival Test Statistics: a Class of Distance Tests for Censored Survival Data

A class of test statistics is introduced which is sensitive against the alternative of stochastic ordering in the two-sample censored data problem. The test statistics for evaluating a cumulative weighted difference in survival distributions are developed while taking into account the imbalances in base-line covariates between two groups. This procedure can be used to test the null hypothesis of no treatment effect, especially when base-line hazards cross and prognostic covariates need to be adjusted. The statistics are semiparametric, not rank based, and can be written as integrated weighted differences in estimated survival functions, where these survival estimates are adjusted for covariate imbalances. The asymptotic distribution theory of the tests is developed, yielding test procedures that are shown to be consistent under a fixed alternative. The choice of weight function is discussed and relies on stability and interpretability considerations. An example taken from a clinical trial for acquired immune deficiency syndrome is presented.     

有的放矢 做好大学新生学生工作

本文以上海理工大学为个案,对大学新生面临的困难和出现的问题进行了分析,并对如何有针对性地开展 大学新生的学生工作提出建议,以帮助学生尽快适应大学生活,顺利实现从高中生到大学生的角色转变.     

中国农村金融体制改革的最优路径选择

从系统论的观点出发,并利用“樊、胡福利指数模型”对我国农村金融体制改革路径进行了分析、验证。研究表明:我国现行农村金融体制所遵循的“循序渐进”改革路径造成了农村金融体制内部不协调发展。受“不协调成本”的影响,我国农村金融的功能非但没有在改革中更趋完善,反而出现了萎缩。建议我国农村金融体制选择“平行推进”的改革路径。     

适应社会发展培养合格经贸英语人才——对我校经贸英语专业人才培养模式的分析

文章从经贸英语专业的人才培养规格、教学计划、课程设置、教学内容等方面介绍了几年来的教学改革实践及取得的初步成果。     

Analyzing Length-biased Data with Semiparametric Transformation and Accelerated Failure Time Models

Right-censored time-to-event data are often observed from a cohort of prevalent cases that are subject to length-biased sampling. Informative right censoring of data from the prevalent cohort within the population often makes it difficult to model risk factors on the unbiased failure times for the general population, because the observed failure times are length biased. In this paper, we consider two classes of flexible semiparametric models: the transformation models and the accelerated failure time models, to assess covariate effects on the population failure times by modeling the length-biased times. We develop unbiased estimating equation approaches to obtain the consistent estimators of the regression coefficients. Large sample properties for the estimators are derived. The methods are confirmed through simulations and illustrated by application to data from a study of a prevalent cohort of dementia patients.     

复核与核准：死刑复核程序应加区分的两个阶段

死刑复核程序是死刑案件的必经程序,是防止错杀、误杀的最后一道防线。为了保证死刑案件的质量,对最高人民法院即将收回死刑核准权的举措,本文持赞成态度。在此基础上,本文首次指出,死刑复核程序其实是由死刑复核和死刑核准两个不同的阶段组成的,死刑复核权和核准权是可以分离的,最高人民法院收回的只是死刑的核准权,而不是死刑的复核权,因此,高级人民法院仍然可以同最高人民法院共同享有并依法行使死刑案件的复核权,但不能再行使死刑的核准权。通过论证,本文就死刑复核和核准两个阶段的具体程序分别进行了分析和探讨,并设计了它们应当具有的基本内容。     

A SRES-based gridded global population dataset for 1990–2100

Spatially explicit population data can play an important role in studies on environment and sustainability. Several gridded datasets on the present population exist, but global data on future populations are largely lacking. This paper presents a dataset covering three global population forecasts for the period 1990–2100 at 0.5-degrees resolution. The basis for these forecasts is the SRES scenarios developed for the IPCC climate-modeling framework. In addition, a gridded dataset of urban and rural populations for the period 1990–2050 is presented. To illustrate how the datasets can be used, future changes in population density and urbanization were analyzed for some of the world’s major river basins. This analysis shows that the population density in the Ganges basin, which is already very high, is likely to increase considerably. The highest future increase rates were found in some African and Middle-Eastern basins. The population dataset for 2015 was compared with one previously published gridded dataset. The comparison shows some differences in population density, mainly in small, highly urbanized coastal river basins, while for large basins, the two datasets agree fairly well. We hope that the datasets here presented will prove to be a useful resource also for other researchers of global environmental change and sustainable development.     

关于学生社区管理模式的探索

本文在总结上海理工大学南汇校区基础学院学生社区管理现状与经验的基础上,探索了现存模式的不足与可进一步发展之处,并提出了作者对如何更好地完善学生社区管理模式的几点建议。     

刑事证人权利保障机制的建立与完善

当前我国刑事证人拒不出庭作证的现象相当普遍,其重要原因之一就是现行立法对刑事证人的权利保护不够完善。建立我国刑事证人权利保障机制应立足我国国情,借鉴国外的有益经验,遵循事前保护与事后救济,预防性保护与惩罚性保护相结合的原则。