排序方式： 共有10条查询结果，搜索用时 984 毫秒
1
1.
Adeline Lee 《图书馆管理杂志》2018,58(2):193-203
A Reach Index was developed in 2015 to find out the proportion of the Singapore population that the National Library Board (NLB) serves. This Reach Index is intended to ascertain NLB's unique reach among Singapore's resident population over a 12-month period. The composite index comprises five indicators: unique physical visitors to its libraries, active members, participants of its programs and/or exhibitions, users of its digital platforms, and volunteers who assist in library operations and the running of programs. At the end of the exercise, the Reach Index was able to help NLB identify the segments of the population that are well-reached as well as under-reached on an annual basis. 相似文献
2.
3.
4.
清华大学图书馆学科馆员工作的新思路和新举措 总被引：51，自引：2，他引：49
介绍清华大学图书馆学科馆员工作的开展情况,重点介绍深化学科服务过程中的新思路和新举措,并由此引发了关于学科馆员工作的若干思考。 相似文献
5.
分析了SiO2 杂质进入氟化盐产品的 2大途径 ,针对 3个环节 ,提出了采取增加母液中的硅含量等 4项措施 ,使产品达标。 相似文献
6.
7.
8.
黄河宁蒙河段的水文和水温过程近几十年来发生了显著变化,迫切需要评估这一变化对河道形态、凌汛的影响及其可能的致灾效应。利用同水位河道过水断面形态参数分析方法,选取宁蒙河段稳定封冻区域（石嘴山-头道拐）的石嘴山、磴口、巴彦高勒、三湖河口和头道拐5个主要水文站,根据2008-2013年凌汛前实测断面资料,计算相应年份5个水文站同水位下的河道断面面积、平均水深和深泓点高程。结果表明,宁蒙河段近年来凌汛期的径流量和水温呈现逐渐增大的趋势,下泄流量过程有助于减少凌灾发生的几率;各水文站凌汛前的断面面积和平均水深等断面形态参数呈逐年增大的趋势,深泓点高程不断降低。河道过水断面形态的这种变化增大了凌汛期河道的过流能力,有助于缓解开河期可能出现的凌汛灾情。 相似文献
9.
Marilyn A. Looney Jennie Gilbert 《Measurement in physical education and exercise science》2013,17(4):268-283
The purpose of the study was to determine if currently used FITNESSGRAM® cut-off scores for the Back Saver Sit and Reach Test had the best criterion-referenced validity evidence for 6–12 year old children. Secondary analyses of an existing data set focused on the passive straight leg raise and Back Saver Sit and Reach Test flexibility scores of 87 boys and 91 girls. The reliability and validity evidence was determined for Back Saver Sit and Reach Test cut-off scores of 7, 8, 9, and 10 inches for the boys and girls separately. Reliability evidence for passive straight leg raise and all Back Saver Sit and Reach Test cut-off scores was good to excellent. The most valid cut-off scores had the highest proportion of correct decisions associated with sensitivity ≥.67, and false-positive rate ≤.24. Based on moderate validity evidence, the best Back Saver Sit and Reach Test cut-off scores for 6–12 year olds are 8 and 9 inches for boys and girls, respectively. These findings should be cross-validated with other samples. 相似文献
10.
1