ms paper proposes a set of objective and quantitative human motion evaluation indices, among Which the index of difficulty and index of performance are introduced as the general indices for the quality measure of 2-D ...ms paper proposes a set of objective and quantitative human motion evaluation indices, among Which the index of difficulty and index of performance are introduced as the general indices for the quality measure of 2-D target-to-talget movement. As an example, the target-reaching movement of index finger, which is a basic functional action of index finger in the daily life of hUman beings, were experimentally investigated. In the experiment five healthy male subjects were asked to perform three target-reaching movement tasks Which have different indices of difficulty. All movements were recorded by a 3-D motion analysis system. Later, their motion qualities were measured with these evaluation metrics. The results showed that these indices are reasonable and have potential applications to biomedical engineering.展开更多
Sleep disordered breathing (SDB) is an independent risk factor for cardiovascular disease. It is known to be associated more frequently with men than women, particularly in the premenopausal age range. The goal of thi...Sleep disordered breathing (SDB) is an independent risk factor for cardiovascular disease. It is known to be associated more frequently with men than women, particularly in the premenopausal age range. The goal of this study is to evaluate gender differences among Korean patients diagnosed with SBD. This study included 309 patients who visited our Sleep Clinic due to sleep-related symptoms and were diagnosed with SDB by overnight polysomnography (PSG). We analyzed age, gender, body mass index, various PSG indices including sleep stages, apnea-hypopnea index (AHI) and AHI ratio in rapid eye movement (REM) versus non-REM (NREM) sleep stages (R:N ratio). Of those 309 patients diagnosed with obstructive sleep apnea, 217 (70.2%) were men (mean age 51.05 ± 12.64 years) and 92 (29.8%) were women (mean age 64.53 ± 10.43 years). The mean AHI during total sleep time was 30.34 ± 21.17 in men and 21.47 ± 17.14 in women (P P P = 0.402). REM SDB with R:N ratio higher than 2.0 was more frequently observed in women than in men, 34.8% (32/92) of women, compared with 11.9% (26/217) in men (P 60 years old. These findings suggest the possibility of different pathophysiologic mechanisms of SDB between genders and also between NREM versus REM sleep, which can be partly explained by the influence of female sex hormones.展开更多
目的:探讨改良B超胃窦单切面法检测胃窦运动指数(MI)在危重症病人早期肠内营养(EEN)中的作用。方法:将62例拟行经鼻胃管喂养的病人随机分为研究组和对照组,每组31例。研究组病人每天应用B超行胃窦单切面法测定空腹MI,以确定当天EN计划;...目的:探讨改良B超胃窦单切面法检测胃窦运动指数(MI)在危重症病人早期肠内营养(EEN)中的作用。方法:将62例拟行经鼻胃管喂养的病人随机分为研究组和对照组,每组31例。研究组病人每天应用B超行胃窦单切面法测定空腹MI,以确定当天EN计划;对照组则由主管医师根据自己的经验制订。EN期间,根据病人胃残余量和耐受性调整EN的速度,比较两组病人的一般情况、EN实施情况和相关终点指标。结果:研究组病人EN起始速度明显高于对照组(40～75 ml/h vs 30～50 ml/h,P=0.04);达到最大喂养速度的时间也有下降趋势(4.0 h vs 9.3 h);研究组病人超过一种以上EN并发症的发生率(37.9%)明显低于对照组(62.1%),两组的终点指标无明显差异。结论:应用改良B超胃窦单切面法测定MI可以较客观地确定EN喂养速度,有助于及早实现喂养目标和降低EN相关的并发症。展开更多
文摘ms paper proposes a set of objective and quantitative human motion evaluation indices, among Which the index of difficulty and index of performance are introduced as the general indices for the quality measure of 2-D target-to-talget movement. As an example, the target-reaching movement of index finger, which is a basic functional action of index finger in the daily life of hUman beings, were experimentally investigated. In the experiment five healthy male subjects were asked to perform three target-reaching movement tasks Which have different indices of difficulty. All movements were recorded by a 3-D motion analysis system. Later, their motion qualities were measured with these evaluation metrics. The results showed that these indices are reasonable and have potential applications to biomedical engineering.
文摘Sleep disordered breathing (SDB) is an independent risk factor for cardiovascular disease. It is known to be associated more frequently with men than women, particularly in the premenopausal age range. The goal of this study is to evaluate gender differences among Korean patients diagnosed with SBD. This study included 309 patients who visited our Sleep Clinic due to sleep-related symptoms and were diagnosed with SDB by overnight polysomnography (PSG). We analyzed age, gender, body mass index, various PSG indices including sleep stages, apnea-hypopnea index (AHI) and AHI ratio in rapid eye movement (REM) versus non-REM (NREM) sleep stages (R:N ratio). Of those 309 patients diagnosed with obstructive sleep apnea, 217 (70.2%) were men (mean age 51.05 ± 12.64 years) and 92 (29.8%) were women (mean age 64.53 ± 10.43 years). The mean AHI during total sleep time was 30.34 ± 21.17 in men and 21.47 ± 17.14 in women (P P P = 0.402). REM SDB with R:N ratio higher than 2.0 was more frequently observed in women than in men, 34.8% (32/92) of women, compared with 11.9% (26/217) in men (P 60 years old. These findings suggest the possibility of different pathophysiologic mechanisms of SDB between genders and also between NREM versus REM sleep, which can be partly explained by the influence of female sex hormones.
文摘目的:探讨改良B超胃窦单切面法检测胃窦运动指数(MI)在危重症病人早期肠内营养(EEN)中的作用。方法:将62例拟行经鼻胃管喂养的病人随机分为研究组和对照组,每组31例。研究组病人每天应用B超行胃窦单切面法测定空腹MI,以确定当天EN计划;对照组则由主管医师根据自己的经验制订。EN期间,根据病人胃残余量和耐受性调整EN的速度,比较两组病人的一般情况、EN实施情况和相关终点指标。结果:研究组病人EN起始速度明显高于对照组(40～75 ml/h vs 30～50 ml/h,P=0.04);达到最大喂养速度的时间也有下降趋势(4.0 h vs 9.3 h);研究组病人超过一种以上EN并发症的发生率(37.9%)明显低于对照组(62.1%),两组的终点指标无明显差异。结论:应用改良B超胃窦单切面法测定MI可以较客观地确定EN喂养速度,有助于及早实现喂养目标和降低EN相关的并发症。
文摘以高速公路隧道路段驾驶员视点变动为研究对象,在传统的平均注视时间动视点指标、注视时间比率动视点指标基础上,根据大量动视点行车实验,考虑驾驶员注视时间、注视频率、视力角等眼动特征,提出了基于视点平面分布的动视点指标,以评价驾驶员视觉信息加工水平.利用该指标对隧道进口平曲线安全性进行评价,结果表明平曲线半径不宜小于450 m.
