脱硫石膏的施用量对盐碱地葵花生长的影响   总被引：3，自引：0，他引：3  

邢秀芹  张为华  于静娟 《鞍山师范学院学报》2013,(2):58-61

采用拉丁方田间试验设计,测定脱硫石膏在不同施用量条件下对盐碱地的改良效果.结果表明:施用脱硫石膏显著提高了土壤有机质和养分含量,一定程度上降低了土壤碱化度、pH值和全盐含量,提高了葵花出苗率、千粒重和产量.根据脱硫石膏施用量与葵花出苗率、产量的模拟曲线关系,测得利用脱硫石膏改良盐碱化土壤的最佳施用量为28.0 t/hm2左右.  相似文献   

指纹考勤系统结构及建模设计     

李劲松  张亨 《江西教育学院学报》2013,(6):30-32

考勤管理是人事管理工作中比较重要的一个环节,是计发工资奖金、劳保福利等待遇的主要依据。从考勤管理的角度出发,我们使用的数据集中库是将几乎所有与考勤相关的数据统一管理起来,形成了集成的信息源。且友好的用户界面,强有力的报表生成工具、分析工具和信息的共享使得学校考勤管理人员得以摆脱繁重的日常工作,他考勤管理工作更加科学化、规范化、智能化。  相似文献   

The education welfare service: the case for a review in England   总被引：1，自引：1，他引：0  

Ken Reid 《Educational studies》2008,34(3):175-189

The only major review of the education welfare service (EWS) took place in 1973 when the role and responsibilities of the service were very different from those of today. Recent legislative changes, the influence of the Children Act 2004 and revised public needs of the service, including new multidisciplinary and interdisciplinary frameworks, suggest that an up‐to‐date review would be timely. It may also help to professionalise the service in a number of different ways, something which is long overdue. This paper provides both the rationale and evidence for making the case for a major review of the EWS based on a reading of all key relevant documents and participation in a range of local and national evaluations on the role of the EWS in England and Wales. The major issues which need to be reviewed are identified and a way forward is suggested.  相似文献   

Child fostering and the educational outcomes of Jamaican children     

《International Journal of Educational Development》2021

The practice of informal fostering is prevalent in many developing regions of the world. Our paper investigates the effects of this practice on school attendance in Jamaica using a rotating panel data set of children constructed from the 2004, 2006, 2007, 2008, 2009, and 2010 rounds of the Jamaican Survey of Living Conditions. Using panel data allows us to deal more effectively with the problem of endogeneity by being able to control for household and child fixed effects. Our findings indicate that the effect of fostering on school attendance depends on whether the household is a beneficiary of PATH, a conditional cash transfer programme instituted by the Government of Jamaica in 2001. We find that a foster child that lives within a non-PATH household is associated with being less likely to be absent from school than a foster child who lives in a household that benefits from PATH. This is true especially for foster girls. Although the PATH programme generally appears to be linked to the improvement in school attendance of Jamaican children, the benefits of the programme may be skewed towards biological children.  相似文献   

Public health emergencies and school attendance: What the Ebola crisis can teach us about the coming post-COVID education landscape     

《International Journal of Educational Development》2021

Using nine Demographic and Health Surveys for the three West African countries affected by the 2013−16 Ebola epidemic, this study applies a district-level interrupted time series (ITS) design to explore the longer-term impacts of the epidemic on school attendance. It shows that, about three to four years after the crisis, attendance has returned to the long-term trend regardless of the difference in Ebola virus disease prevalence among districts. The study also shows no discernable effect on the attendance trends for children from vulnerable backgrounds. However, it suggests further areas for examination and study. This includes migration patterns, the investment of emergency relief and overseas development aid between regions, the possible role of orphan status and early marriage (for girls) as vectors for the effect of the EVD crisis on educational outcomes and learnings losses for children who were out of school for up to an entire school year.  相似文献   

一个非局部波动方程组解的爆破增长率的估计     

陈碧英 《南平师专学报》2007,26(2):19-21

本文考虑如下非局部波动方程组的初值问题:这里0相似文献   

学生宿舍人脸识别考勤系统设计     

吴永斌  濮永仙  肖坤娥  虞泉  袁铭举  吴兴蛟 《教育技术导刊》2020,19(6):113-116

为规范学生宿舍管理,保障学生人身安全,采用人脸识别技术,结合目前通用的软件开发方式与数据库技术,基于云服务器数据处理和移动设备终端,设计开发一套智能化学生宿舍考勤系统。该系统可有效解决现阶段高校学生宿舍考勤难的问题,相较传统考勤管理方式,新方法将考勤效率提升约 50%。基于人脸识别的学生宿舍考勤系统可有效提升学生宿舍考勤管理效率。  相似文献   

Children in care or in need: educational progress at home and in care     

Ian Sinclair  Nikki Luke  David Berridge 《牛津教育评论》2019,45(4):443-460

ABSTRACT

By age 16 the attainment of most children in or on the edge of out of home care has fallen well behind the average for their age. This paper uses the English National Pupil Database to examine how much of this falling behind occurs before the age of seven, and how any subsequent decline relates to time in care as against time outside it. We compare the previous progress of three groups of 16-year-olds: 5175 looked after by the state (CLA), 17,392 in need but not in care (CIN), and 22,567 children matched with the CLA or CIN on initial attainment, special educational needs, and eligibility for free school meals. We found that the attainment of the CIN and those CLA not yet in care was around one standard deviation below the cohort average at age seven. It then fell relative to their peers while their rate of unauthorised absences and exclusions grew. Removal from home to care appeared to halt or greatly reduce this decline but did not, on average, reverse it. We conclude that educational interventions for CLA should also include CIN, start before seven, target both school and family, and exploit the educational opportunity which care provides.  相似文献   

Predicting higher education outcomes and implications for a postsecondary institution ratings system     

Eddie G. Walker II 《Journal of Higher Education Policy & Management》2016,38(4):422-433

The accountability of colleges and universities is a high priority for those making policy decisions. The purpose of this study was to determine institutional characteristics predicting retention rates, graduation rates and transfer-out rates using publicly available data from the US Department of Education. Using regression analysis, it was determined there are 14 predictors of the full-time retention rate, 7 predictors of the part-time retention rate, 15 predictors of the graduation rate and 12 predictors of transfer-out rates. Institutions and policymakers could use the results of this analysis to determine the policies that would be beneficial to improving the analysed outcomes. All four analyses indicate good fit with R² ranging from .273 to .828. Some possible policy implications include addressing selectivity if institutions want to improve retention rates and addressing affordability to improve retention and graduation rates.  相似文献   

Simple shear endochronic eqiations for finite plastic deformation     

JlANG Wugui  FU Mingfu  CHEN Liangsen  GENG Shiqi 《重庆大学学报(英文版)》2004,3(1)

The endochronic equations proposed by Valanis (1980) were extended to a finite deformation range. Jaumann's rate,Fu's rate and Wu's rate were incorporated into the endochronic equations to analyze simple shear finite deformation. Incremental equations and numerical solutions are deduced for three endochronic objective models. The results show that an oscillatory shear stress response to a monotonically increasing shear strain occurs when the Jaumann's rate objective model is employed for endochronic materials. The oscillatory response is dependent on the adopted objective rate. Compared with the Jaumann's rate, the Fu's rate and the Wu's rate satisfy the restrictions to elastic-plastic constitutive relations and are in agreement with the experimental results.  相似文献