The usability of an interface is a fundamental issue to elucidate. Many researchers argued that many usability results and recommendations lack empirical and experimental data. In this research, the usability of the w...The usability of an interface is a fundamental issue to elucidate. Many researchers argued that many usability results and recommendations lack empirical and experimental data. In this research, the usability of the web pages is evaluated using several carefully selected statistical models. Universities web pages are chosen as subjects for this work for ease of comparison and ease of collecting data. A series of experiments has been conducted to investigate into the usability and design of the universities web pages. Prototype web pages have been developed according to the structured methodologies of web pages design and usability. Universities web pages were evaluated together with the prototype web pages using a questionnaire which was designed according to the Human Computer Interactions (HCI) heuristics. Nine (users) respondents’ variables and 14 web pages variables (items) were studied. Stringent statistical analysis was adopted to extract the required information to form the data acquired, and augmented interpretation of the statistical results was followed. The results showed that the analysis of variance (ANOVA) procedure showed there were significant differences among the universities web pages regarding most of the 23 items studied. Duncan Multiple Range Test (DMRT) showed that the prototype usability performed significantly better regarding most of the items. The correlation analysis showed significant positive and negative correlations between many items. The regression analysis revealed that the most significant factors (items) that contributed to the best model of the universities web pages design and usability were: multimedia in the web pages, the web pages icons (alone) organisation and design, and graphics attractiveness. The results showed some of the limitations of some heuristics used in conventional interface systems design and proposed some additional heuristics in web pages design and usability.展开更多
目的本研究旨在探讨按疾病诊断相关分组(diagnosis related groups,DRGs)付费模式下,病案首页质控的重要性及其对医疗质量和费用管理的影响。方法通过对江南大学附属医院质控前(对照组,2022年1—6月)及质控后(观察组,2023年1—6月)期间...目的本研究旨在探讨按疾病诊断相关分组(diagnosis related groups,DRGs)付费模式下,病案首页质控的重要性及其对医疗质量和费用管理的影响。方法通过对江南大学附属医院质控前(对照组,2022年1—6月)及质控后(观察组,2023年1—6月)期间的5000份病案首页数据进行回顾性分析,研究病案首页质控对DRGs分组准确性、医疗费用及医院收入的影响,评估病案首页质控的效果。结果对照组的DRGs分组准确率为(78.6±5.7)%,低于观察组的(90.1±4.3)%,差异有统计学意义(t=113.889,P<0.05)。相较于对照组,观察组的病案首页信息的完整性和准确性提高,编码错误和信息缺失减少,患者人均费用下降,医院收入趋于合理化,医疗资源利用更为高效。结论在DRGs付费模式下,病案首页质控是提升医疗质量和费用管理的关键环节,通过规范化质控流程,不仅提高了病案质量,还优化了医院的经济效益。展开更多
为了研究污泥在低温低湿条件下的干燥规律,获得表征水分迁移过程的有效水分扩散系数(D_(eff))和活化能(E_a),以脱水污泥为研究对象进行了污泥低温低湿干燥试验,探讨了温度(30℃、35℃、40℃、45℃、50℃)和相对湿度(20%、40%、60%)对污...为了研究污泥在低温低湿条件下的干燥规律,获得表征水分迁移过程的有效水分扩散系数(D_(eff))和活化能(E_a),以脱水污泥为研究对象进行了污泥低温低湿干燥试验,探讨了温度(30℃、35℃、40℃、45℃、50℃)和相对湿度(20%、40%、60%)对污泥水分比(MR)和干燥速率(DR)的影响。结果表明,污泥的低温低湿干燥过程属于内部迁移控制,即水分扩散速率决定干燥速率。根据试验数据建立了污泥水分迁移动力学模型,并与6种常用薄层干燥模型进行拟合,通过对决定系数(R^2)、方差(χ~2)和残差平方和(RSS)的比较,得出污泥低温低湿干燥过程可以用Page模型来描述。结合Fick第二定律,得到不同温度(30~50℃)、湿度(20%~60%)条件下污泥有效水分扩散系数的范围为(0.699~1.991)×10^(-9)m^2/s;对传统的Arrhenius公式进行湿度修正,获得了干燥介质温度和湿度对污泥干燥特性影响的数学模型及活化能E_a=23.83 k J/mol。展开更多
文摘The usability of an interface is a fundamental issue to elucidate. Many researchers argued that many usability results and recommendations lack empirical and experimental data. In this research, the usability of the web pages is evaluated using several carefully selected statistical models. Universities web pages are chosen as subjects for this work for ease of comparison and ease of collecting data. A series of experiments has been conducted to investigate into the usability and design of the universities web pages. Prototype web pages have been developed according to the structured methodologies of web pages design and usability. Universities web pages were evaluated together with the prototype web pages using a questionnaire which was designed according to the Human Computer Interactions (HCI) heuristics. Nine (users) respondents’ variables and 14 web pages variables (items) were studied. Stringent statistical analysis was adopted to extract the required information to form the data acquired, and augmented interpretation of the statistical results was followed. The results showed that the analysis of variance (ANOVA) procedure showed there were significant differences among the universities web pages regarding most of the 23 items studied. Duncan Multiple Range Test (DMRT) showed that the prototype usability performed significantly better regarding most of the items. The correlation analysis showed significant positive and negative correlations between many items. The regression analysis revealed that the most significant factors (items) that contributed to the best model of the universities web pages design and usability were: multimedia in the web pages, the web pages icons (alone) organisation and design, and graphics attractiveness. The results showed some of the limitations of some heuristics used in conventional interface systems design and proposed some additional heuristics in web pages design and usability.
文摘目的本研究旨在探讨按疾病诊断相关分组(diagnosis related groups,DRGs)付费模式下,病案首页质控的重要性及其对医疗质量和费用管理的影响。方法通过对江南大学附属医院质控前(对照组,2022年1—6月)及质控后(观察组,2023年1—6月)期间的5000份病案首页数据进行回顾性分析,研究病案首页质控对DRGs分组准确性、医疗费用及医院收入的影响,评估病案首页质控的效果。结果对照组的DRGs分组准确率为(78.6±5.7)%,低于观察组的(90.1±4.3)%,差异有统计学意义(t=113.889,P<0.05)。相较于对照组,观察组的病案首页信息的完整性和准确性提高,编码错误和信息缺失减少,患者人均费用下降,医院收入趋于合理化,医疗资源利用更为高效。结论在DRGs付费模式下,病案首页质控是提升医疗质量和费用管理的关键环节,通过规范化质控流程,不仅提高了病案质量,还优化了医院的经济效益。
文摘为了研究污泥在低温低湿条件下的干燥规律,获得表征水分迁移过程的有效水分扩散系数(D_(eff))和活化能(E_a),以脱水污泥为研究对象进行了污泥低温低湿干燥试验,探讨了温度(30℃、35℃、40℃、45℃、50℃)和相对湿度(20%、40%、60%)对污泥水分比(MR)和干燥速率(DR)的影响。结果表明,污泥的低温低湿干燥过程属于内部迁移控制,即水分扩散速率决定干燥速率。根据试验数据建立了污泥水分迁移动力学模型,并与6种常用薄层干燥模型进行拟合,通过对决定系数(R^2)、方差(χ~2)和残差平方和(RSS)的比较,得出污泥低温低湿干燥过程可以用Page模型来描述。结合Fick第二定律,得到不同温度(30~50℃)、湿度(20%~60%)条件下污泥有效水分扩散系数的范围为(0.699~1.991)×10^(-9)m^2/s;对传统的Arrhenius公式进行湿度修正,获得了干燥介质温度和湿度对污泥干燥特性影响的数学模型及活化能E_a=23.83 k J/mol。
