C语言程序教学的问卷调查分析与教学改革

C语言程序是学习和掌握计算机技术的基础课程,如何改革该课程教学,提高教学质量,一直是人们所关注与探讨的问题。本文从对学生的问卷调查结果的分析入手,总结、剖析了我院的C语言程序课堂教学中存在的问题,并结合实际提出的一些建议,以期对教学改革有所意义。     

图书馆读者网络问卷调查系统的设计与实现

本文为主要介绍,基于B／S结构,设计和开发网络版的读者问卷调查系统,此系统对调查问卷结果的分析和统计做出详细的描述,通过和图书馆其它系统的联合使用,形成特有的读者问卷调查反馈服务平台,本文参与“‘网络环境下高校用户信息行为实证研究”课题立项的研究。     

Biological and psychological responses to two rapid shiftwork schedules

This study presents the biological responses to shiftwork in two groups of workers with different shiftwork rotas. Biological responses were studied by recording the heart rate and the changes in the circadian profile of salivary cortisol over 24?h (RIA assays). Various items were recorded through questionnaires aimed at determining self appreciation of sleep quantity, stress, health, satisfaction at work and in private lives. Thirty two male subjects aged from 23 to 56, working for the same company, having given their informed consent, took part in the study. The study was carried out under realistic conditions (at the work place) under the control of an occupational physician. Sixteen day-workers (8 am?–?6?pm) served as a reference group. Eight shiftworkers included in alternate schedules (morning M 4 am?–?12 am, evening E 12 am?–?8?pm, night N 8?pm?–?4 am) according to a system M, S, N 3/2, (3 work, 2 rest) and eight according to a system 7/5 (3M/2S/2N/5R, 2/3/2/5, 2/2/3/5) constituted the groups of shiftworkers respectively named 3/2 and 7/5. All subjects had comparable ages and BMIs. Shiftworkers expressed a higher stress level and frequency of health problems and a lower satisfaction at work than the control. Among the three groups, the 7/5 group had the best health and fitness score and was in need of less sleep. Heart rate was not affected by shift work. Conversely, consistent changes appeared in cortisol circadian profiles, the greatest changes appearing for the night shift and among the two groups of shiftworkers, more particularly for the 7/5 group. These changes correlated with self-perceived constraints of work and showed the difficulties of adaptation to shiftwork.     

Body composition and self-perceived health and fitness among indoor sports participants

Abstract

This paper examines (1) the responses of participants in specific indoor sports to questions regarding their self-perceived health and fitness, and (2) the relation betweeen these responses and body composition. A representative sample of indoor sports participants (n = 4308; 2938 male and 1370 female) from six cities in the United Kingdom responded to a questionnaire concerned with their self-perception of health and fitness. Height and weight was established from self-report and a body mass index (BMI) was calculated. Seventy eight percent of males and 85% of females reported their health as ‘good’ or ‘excellent’. Less than 2% of the sample reported their health as ‘poor’ or ‘very poor’. However, only 67% of males and 67% of females reported their fitness as ‘good’ or ‘excellent’. Again, the proportion of the sample reporting ‘poor’ or ‘very poor’ fitness was low; less than 4%. The question on health was compared with a recent general population survey and this yielded markedly more ‘unfavourable’ results; only 72% of males and 70% of females reported their health as being ‘good’ or ‘excellent’. A comparison of the response category groups for BMI showed significant differences between the ‘poor’ and ‘fair’ groups but not between the ‘good’ and ‘excellent’ groups.

It is concluded that: (1) indoor sports participants regard their health and fitness highly, but their fitness less so than their health; (2) adiposity tends to be associated with poorer perceptions of health and fitness; (3) women sports participants perceive their health more highly than others of the same age compared with men, yet the reverse is true of fitness.     

Self-reported neck symptoms and use of personal computers,laptops and cell phones among Finns aged 18–65

The purpose of this study was to investigate the possible relation between self-reported neck symptoms (aches, pain or numbness) and use of computers/cell phones. The study was carried out as a cross-sectional study by posting a questionnaire to 15,000 working-age persons, and 15.1% of all respondents (6121) reported that they very often experienced physical symptoms in the neck. The results showed that they also had many other symptoms very often, and 49% used a computer daily at work and 83.9% used cell phones. We compared physical/mental symptoms of persons with symptoms in the neck quite often or more, with others. We found significant differences in the physical/mental symptoms and use of cell phones and computers. The results suggest taking into account in the future that those persons' symptoms in the neck can be associated with use of cell phones or computers.

Practitioner Summary: We investigated the possible relation between neck symptoms and use of computers/cell phones. We found that persons, who very often had symptoms in the neck, had also other symptoms very often (e.g. exhaustion at work). Their use of information and communication technology (e.g. computers) can associate with their symptoms.     

产品包装营养信息影响酸奶选择意向的实验研究

研究了营养信息内容和不同信息强调形式对消费者酸奶选择的影响。制作不同的酸奶产品营养信息标签,招募90名20~45岁的公司职员进行购物选择实验,采用SPSS 18.0进行数据分析。结果表明:营养成分表中增加维生素、饱和脂肪酸和胆固醇质量分数的内容受到关注,营养声称对酸奶选择有显著影响。标签正面增加推荐图标、推荐文字或成分含量说明的酸奶可提高受试者的选择比例。     

服装市场调查的若干误区及改进

基于应用统计学知识及市场调研文献资料,通过对服装市场调研方法、工具以及问卷调研的评价指标梳理,结合服装市场问卷调研的实际案例和常见问题及误区,探析产生原因及改进方法,为从事相关工作的调查者提供借鉴。     

大型公共建设项目管理绩效评价——基于管理过程视角

基于管理过程的视角,对大型公共建设项目管理绩效评价进行研究。首先将管理过程划分为6个子过程,以各个子过程的关键任务为主线,从项目管理的职能维度和项目管理的影响因素维度提出各子过程的关键管理绩效因素,在此基础上,通过德尔菲法得到了各子过程的管理绩效评价指标。然后借助于绩效指标重要性的问卷调查,得出各个管理子过程及各项管理绩效评价指标的权重,从而构建大型公共项目管理绩效评价指标体系。     

引发产业变革的颠覆性技术内涵与遴选研究

引发产业变革的颠覆性技术具有技术突破性、产品替代性、市场广泛性与产业变革性特征,会对社会发展和人民生活产生深远的影响。本文首先从产业和技术角度出发,提出引发产业变革的颠覆性技术内涵;其次,建立相应的指标评价体系;最后,通过两轮问卷调查,以定性和定量相结合的方式,遴选出20多项引发产业变革的颠覆性技术,从而为进一步研究颠覆性技术与产业变革间的规律、开展技术预测工作提供支撑。     

两种送风方式下人体舒适性实验研究

采用实验室研究方法研究了侧送风与散流器送风两种送风方式对人体热舒适的影响,统计结果表明：侧送风与散流器送风下的中性温度分别为28.64℃和25.96℃,不满意率分别为4.34%和6.82%,根据热感觉投票值得出了两种送风方式下80%,90%满意率的温度范围,并与ASHRAE Standard 55-1992中夏季舒适区的温度进行了对比。