GIS-based logistic regression method for landslide susceptibility mapping in regional scale

INTRODUCTION Landslide is one of the most serious geological hazards in mountain areas. Globally, they cause hundreds of billions of dollars in damage, and hun- dreds of thousands of deaths and injuries each year (Aleotti and Chowdhury, 1999). Over the past fewdecades, scientists have shown an ever increasing interest in this natural hazard. One of the study fields is to produce landslide susceptibility map, i.e. a map portraying the spatial distribution of the future susceptibility of s…     

A LISREL model for the analysis of repeated measures with a patterned covariance matrix

We present a LISREL model for the estimation of the repeated measures analysis of variance (ANOVA) with a patterned covariance matrix. We demonstrate this model for a 5 x 2 (Time x Group) ANOVA in which the data are assumed to be serially correlated. The residuals are assumed to have been generated according to an AR(1) process. An appropriate covariance structure is selected, tested, and compared with alternative patterns. Similarities between the LISREL model and SAS PROC MIXED are discussed.     

logistic回归模型在公司财务预警中的实证研究

本文采用logistic回归模型,分别从企业财务的四个方面选出了四个指标：股东权益比（偿债能力）、应收帐款周转率（营运能力）、总资产增长率（成长能力）、税前利润增长率（盈利能力）,利用SPSS软件,对上市公司的财务风险进行了研究。结果表明,由该指标建立的回归模型拟合效果非常好,同时也具有很好的预测准确度和实用推广性。     

新时期清华大学后勤的改革与发展

清华大学后勤的改革发展是清华大学建设世界一流大学的重要组成部分。新时期清华大学后勤面临新的机遇和挑战。笔者着重阐述清华大学后勤改革的基本原则;从后勤机构改革、人才培养和后勤服务保障体系发展方向等多个方面阐述了新时期清华大学后勤改革和发展规划;提出了“继续深化后勤机构改革,建立完善的后勤人才培养体系,走专业化和科学化道路,建设后勤保障服务体系”的基本思路。     

Determinants of increasing duration of first unemployment among first degree holders in Rwanda: a logistic regression analysis

Unexpectedly, the duration of first unemployment among first degree holders has quickly increased in Rwanda after considerable loss of the skilled labour during the war and Genocide perpetrated against Tutsi in 1994. The time it takes a higher education graduate to land a first employment is a key indicator for the evaluation of and optimal investment in higher education. A long-term first unemployment has negative psychosocial and economic consequences, and is an interplay of diversified factors. Yet, these factors have not been ascertained in Rwanda, whereas their knowledge is crucial for an efficient planning of higher education and employability of the graduates. This study aimed to fill in this knowledge gap for the period 1998–2009. We fitted a binary logistic regression model to data from the 2010 Employer and Graduate Survey (n = 1007) that was conducted by the National University of Rwanda. The results showed that the duration of first unemployment was significantly associated to the graduate’s age, job search method, acquired skills, further graduate studies, monthly salary and category of employing institution. The results suggest that the higher education sector should identify and fill skills gaps in the existing curricula or its delivery with reference to the labour market requirements.     

Community college student-parents: priorities for persistence

This study of community college student-parents used interpretive phenomenological analysis of interview data contributed by 15 participants from three Mountain West Community Colleges. The participants qualified by the following criteria: had delayed college entrance by 2 years or more, had a child not yet in kindergarten, were full-time students in an associate degree program, worked part-time, and had 15 credits or more toward their degree. This study revealed what it meant for student-parents to have success while they addressed the challenges of balancing work, home, child care, and academic responsibilities. The student-parents described experiences that required prioritizing responsibilities, managing time effectively, securing needed support services, addressing stress, developing strategies for study and parenting, and maintaining a positive mindset. The findings include quotations that describe the challenges of each student-parent; whether individually unique, conflicting, or shared by the subset of this nontraditional student group. The student-parents shared a common sense of resolve to use prioritizing strategies as they made decisions affecting their degree completion. Student-parents had the common goal to obtain a better life for themselves and their children.     

Examining study attrition: Implications for experimental research on professional development

As teacher professional development research includes more experimental designs, new challenges arise. We examine the threat of participant attrition as an example of the types of problems researchers face. Counter-intuitively, higher levels of recruitment effort were related to higher dropout rates among teachers. We also found that teachers left because of changes in teaching assignments, institutional challenges, and personal challenges. Finally, the majority of teachers in urban schools dropped out, while the majority of teachers in rural or suburban schools remained. We conclude with recommendations for future teacher learning experiments.     

Student attrition and academic and social integration: Application of Tinto’s model at the University of Papua New Guinea

This study explores the compensatory relationship between academic and social integration, and also assesses the differences of group specific academic and social integration in a small university in the Pacific as perceived by the students. In order to reduce attrition through developing a relevant retention policy, a comprehensive group specific assessment of academic and social integration was necessary. Using the Tinto model and research instruments, an institutional academic and social integration assessment instrument was developed for measuring perceived integration climate for specific subject and year of studies groups. An important outcome of this study was the existence of a compensatory relationship between academic and social integration. Differences were found between perceived ratings of student groups for both academic and social integration.     

Factor Models for Ordinal Variables With Covariate Effects on the Manifest and Latent Variables: A Comparison of LISREL and IRT Approaches

We consider a general type of model for analyzing ordinal variables with covariate effects and 2 approaches for analyzing data for such models, the item response theory (IRT) approach and the PRELIS-LISREL (PLA) approach. We compare these 2 approaches on the basis of 2 examples, 1 involving only covariate effects directly on the ordinal variables and 1 involving covariate effects on the latent variables in addition.     

On Wyner-Ziv Problem for general sources with average distortion criterion

The Wyner-Ziv Problem for general sources with average distortion under fixed-length coding is investigated in this paper. To solve the problem,an enhanced covering lemma for a Markov chain is first established. Then based on the lemma,a general formula for the rate-distortion function of the problem is derived,where the distortion is only assumed uniformly bounded and may be nonadditive. Finally,it is further pointed out that such methods can be used to establish more general results on multiterminal source coding problems.     

具有成熟前收敛判断的自适应遗传算法

针对传统的简单遗传算法的缺陷，提出了改进的具有成熟前收敛判断的自适应遗传算法．用群体熵值和均方差来预报成熟前收敛的发生．当成熟前收敛发生时，提出以群体中的最优个体为基础，在其一定大小领域内随机产生若干个体，取代原种群中的部分个体，其中更新的个体数占群体中个体总数的30％—40％，领域大小与目标函数极值点分布有关．仿真实验证明，算法的收敛速度和全局收敛概率都有显的提高．     

Teacher attrition in the USA: the relational elements in a Utah case study

Previous work on teacher attrition in the US has indicated that those who stay in the profession and those who leave are not separate homogenous groups. In this study, the lived experience of former teachers is examined to determine the issues that distinguish leavers from stayers. The sample is from the state of Utah, a state with one of the highest attrition rates in the nation. By loosely applying self-thematization theory to collect and analyze data from former teachers, a variety of elements were identified that combined in timing and intensity to influence the decision to leave the profession. These elements are also experienced by teachers who stay. However, in this study, collegial relationships was identified as the mitigating factor regardless of any combination of other factors influencing the decision to leave or stay. Although small-scale convenience sampling was employed, this study allows for an intimate accounting of the relational elements of teaching that exist among educators, which are often overlooked. Implications for teaching and schools are discussed with suggestions for direction of future research on teacher attrition.     

Analysis of the Latin Square Task with linear logistic test models

The Latin Square Task (LST) was developed by Birney, Halford, and Andrews [Birney, D. P., Halford, G. S., & Andrews, G. (2006). Measuring the influence of cognitive complexity on relational reasoning: The development of the Latin Square Task. Educational and Psychological Measurement, 66, 146–171.] and represents a non-domain specific, language-free operationalization of Relational Complexity (RC-)Theory. The current study investigates the basic cognitive parameters and structure of LST as defined by RC-Theory, using IRT-based linear logistic test models (LLTM). 850 German school students completed 26 systematically designed LST items. Results support the notion of Rasch-scalability. LLTM analyses reveal that both operation complexity and number of operations affect item difficulty. It is shown how LLTM and its variants can provide substantial insights into cognitive solution processes and composition of item difficulty in relational reasoning in order to make item construction more efficient.     

The new one-drop rule: challenging the persistence of white supremacy with in-service teachers

ABSTRACT

The one-drop rule refers to the process of being racialized Black when someone contains any amount of Black ancestry, i.e. one drop of Black blood. In this article, I use what I call ‘the new one-drop rule’ to explain how even the smallest presence of white discourse can disrupt racial equity work in schools. Based on a critical race study in a racially desegregated elementary school, I illustrate how one drop of white discourse from even one less racially literate white teacher can cause usually more racially literate white teachers to support white supremacy. I also share how collaborative research utilizing critical race theory (CRT) can help schools build greater racial literacy and resist white discourse. I argue that critical research on race with in-service teachers should not forefront the consciousness-raising of resistant white teachers but rather center the wants, needs, and racial knowledge of racially literate teachers and especially teachers of color.     

规划2015年教师需求——《教师与教育质量——监测2015年全民教育目标全球需求》连载（四）

为实现在2015年前普及全球初等教育的目标,全球范围内初等教育阶段教师数量还有较大缺口,本期报告将着重对这一数字进行量化,以确定未来几年内该阶段教师的具体需求量。这些数字方面的规划将对教师数量变化的预期趋势进行概要式总结,并帮助确定哪些国家面临的挑战最大。不过,这些数据规划无法对各个国家具体的情况和社会环境做出评估,而...     

关于评价一堂好课根本标准的初步认识

评价一堂好课的根本标准是客观效果,即凡是好课一定对学生有好的教育教学效果.这个根本标准具有客观性、辩证性、科学性和价值性.实现一堂好课的关键在教师,而教师贵在优化课堂教学,优化课堂教学包括四点主要认识.     

以文化人:大学生民族精神培育的路向

善用大学校园文化的教育功能,是加强大学生民族精神培育的理想之路。构筑立体化的舆论氛围是匡正校园观念文化导向的基础;营建精品化的涵育载体是匡正校园观念文化导向的关键。大学要通过课程教化和礼乐教化,强化民族传统文化教育;以活跃学生群体文化氛围,营造民族精神养成教育之大气候;注重教师人格文化建设,提升物质环境文化品位。     

Education for all and attrition/retention of new teachers: A trajectory study in Chile

This article centres on teacher retention and its importance for achieving quality education for all. It analyses the state of early career teaching attrition and turnover in Chile over a ten-year period, and goes on more closely to the study of new teacher trajectories over their first two years of teaching. In line with literature on issues of retention/attrition it considers the impact of school conditions and changes in professional satisfaction and self-efficacy perceptions in the early years of teaching. Data sources include econometric analysis of existing databases as well as surveys, interviews and narratives. Quantitative results indicate high attrition rates of early career teachers in Chile, and teacher narratives show “critical” as well as “protective” conditions that foreshadow decisions to leave or the stay in the profession.