数值分析课程中算法设计教学的研究

算法设计困难,程序效率低下是目前数值分析实验课面临的普遍问题.算法是程序设计的灵魂,没有好的算法就没有好的程序.以Romberg求积为例,提出了以问题为引导的算法和流程图的设计方法,进一步研究了如何在数值分析课程中有效开展算法设计教学的问题.     

五华三黄鸡山地放养条件下肉用性能及肉品质的研究

为探讨山地放养模式对五华三黄鸡的肉用性能及肉品质的影响,选取100只1日龄的五华三黄鸡作为试验动物,对其进行210 d的生长监控,并于试验结束时随机抽取30只(公鸡10只,母鸡20只)对其进行体重、肉用性能和肉品质等指标的测定.结果表明:五华三黄鸡有2个生长高峰期,第一个高峰在14～28日龄之间,第二个高峰在90～150日龄之间;公鸡的屠宰率为89.93%,母鸡为92.76%,全净膛率公鸡为64.13%,母鸡为60.44%,半净膛率公鸡为76.37%,母鸡为71.91%.胸肌、腿肌粗蛋白含量分别为公鸡22.23%、20.12%,母鸡22.53%、20.90%,差异均达到显著水平(P<0.05);胸肌、腿肌粗脂肪含量分别为公鸡1.49%、2.84%,母鸡1.60%、2.68%,差异极显著(P<0.01);胸、腿肌粗灰分含量分别为公鸡为1.47%、1.52%,母鸡1.51%、1.51%,差异不显著(P>0.05).此外还测定了肉色、肌肉含水量、不同时间的pH值以及心脏、肝脏和肌胃的粗蛋白、粗脂肪含量.     

Fat Rights and Fat Discrimination: An Annotated Bibliography

This bibliography is a selection of articles, books, and selected other material relevant to antidiscrimination laws and fat people. Prejudice against fat people has been widely discussed in the media. Many people are actively engaged in discourse about how our society treats fat people and whether discrimination against them is acceptable. At the same time, a small but growing body of law has developed to address discrimination against fat people in employment and public accommodations. This bibliography is intended to assist scholars, practicing lawyers, policy makers, and activists by gathering, organizing, and annotating the relevant literature and legal resources.     

基于词频信息确定叙词表概念属性

认为为了提高叙词表的实用性,在叙词表编制和应用中,需要充分发挥词频信息的重要参考价值。通过总结词频信息的利用方法,包括通过词频和专业偏向度确定专业核心概念、通过词频信息确定优选词属性以及通过词频信息为概念确定范畴号。探讨对词频高低的词汇属性、优选词的重要程度、词频生命周期变化和词频使用的局限性等问题。     

Who's Doing What? Findability and Author-Supplied ETD Metadata in the Library Catalog

Kent State University Libraries’ electronic thesis and dissertation (ETD) cataloging process features contributions by authors, by the ETDcat application, and by catalogers. Who is doing what, and how much of it is findable in the library catalog? An empirical analysis is performed featuring simple frequencies within the KentLINK catalog, articulated by the use of a newly devised rubric. The researchers sought the degree to which the ETD authors, the applications, and the catalogers can supply accurate, findable metadata. Further development of combinatory cataloging processes is suggested. The method of examining the data and the rubric are provided as a framework for other metadata analysis.     

Searching for a New Way to Reach Patrons: A Search Engine Optimization Pilot Project at Binghamton University Libraries

ABSTRACT

Search engine use is one of the most popular online activities. According to a recent OCLC report, nearly all students start their electronic research using a search engine instead of the library Web site. Instead of viewing search engines as competition, however, librarians at Binghamton University Libraries decided to employ search engine optimization strategies to make their Web site more visible on the search engine result pages. Although search engine optimization is used frequently by commercial Web sites, few libraries have attempted to optimize their own sites. This article describes Binghamton University's experiences in developing and implementing an optimization pilot project. The research presented in this article has importance for libraries who may be considering an optimization project for their own sites.     

一种复方减肥降脂发酵植物饮料菌种的初步筛选

以复方减肥植物浸提液（由荷叶、山楂、决明子、沙棘果等药食同源植物浸提而成）为发酵基质,接种不同菌株,在23±2℃下培养5d后,离心分离菌体后上清液过滤得到发酵减肥降脂植物饮料.对灭菌后发酵减肥降脂植物饮料进行感官评价,获得了3株能显著改善口感的菌株.     

The Effect of Depth Jumps and Weight Training on Leg Strength and Vertical Jump

Abstract

In recent years, a method of plyometrics (exercises that cause a rapid lengthening of a muscle prior to contraction) called depth jumping has become a part of the training routine of many athletes. Two experiments are described in which the effectiveness of the exercises is examined. In Experiment 1, undergraduate students in beginning weight training classes trained with three different jumping programs: (1) maximum vertical jumps, (2) 0.3 m depth jumps, and (3) 0.75 m and 1.10 m depth jumps. In addition, all groups also lifted weights. In Experiment 2, a weight training class and the volleyball team at Brigham Young University-Hawaii were divided into two groups. One group lifted weights and performed 0.75 and 1.10 m depth jumps. The other group only lifted weights. In Experiment 1, the three training programs resulted in increases in one repetition maximum (1 RM) squat strength, isometric knee extension strength, and in vertical jump; however, there were no significant differences between treatments. In Experiment 2, all groups made significant increases in vertical jump, except the group of weight lifters, who did no jumping. It was concluded that depth jumps are effective but not more effective than a regular jumping routine.     

The time-frame of acute resistance exercise effects on football skill performance: The impact of exercise intensity

Abstract

The purpose of this study was to determine the recovery rate of football skill performance following resistance exercise of moderate or high intensity. Ten elite football players participated in three different trials: control, low-intensity resistance exercise (4 sets, 8–10 repetitions/set, 65–70% 1 repetition maximum [1RM]) and high-intensity resistance exercise (4 sets, 4–6 repetitions/set, 85–90% 1RM) in a counterbalanced manner. In each experimental condition, participants were evaluated pre, post, and at 24, 48, 72 h post exercise time points. Football skill performance was assessed through the Loughborough Soccer Passing Test, long passing, dribbling, shooting and heading. Delayed onset muscle soreness, knee joint range of motion, and muscle strength (1RM) in squat were considered as muscle damage markers. Blood samples analysed for creatine kinase activity, C-reactive protein, and leukocyte count. Passing and shooting performance declined (P < 0.05) post-exercise following resistance exercise. Strength declined post-exercise following high-intensity resistance exercise. Both trials induced only a mild muscle damage and inflammatory response in an intensity-dependent manner. These results indicate that football skill performance is minimally affected by acute resistance exercise independent of intensity suggesting that elite players may be able to participate in a football practice or match after only 24 h following a strength training session.