昆明五华区露营地空间分布指向性特征及障碍度评价研究

选取昆明市五华区近期重点规划的露营地为主要案例研究,借助ArcGIS工具进行案例地露营空间环境分析,再借助障碍度模型对该地的露营地进行发展评价分析,结果表明:五华区露营地总体分布于地势较为平坦的中间地带,呈现“整体分散和局部聚集”的空间分布特征;五华区露营地中处于核密度较高区域的露营地与周围其它露营地之间形成吸引力较强;各个露营地均存在一定可视范围,最佳视域地能同时观测到露营地个数为4,露营地可服务范围都较宽泛。出入口服务、停车场服务和绿地服务是五华区露营地整体发展中的主要障碍因素,松鹿部落较大障碍值明显突出。

基于障碍度模型的S陆港中欧班列开行质量效益评价

中欧班列作为“一带一路”倡议的旗舰项目,已成为我国对欧贸易发展的重要载体。对陆港地区开行的中欧班列开行质量效益进行研究,重点考虑和所在地区的经贸联系影响因素,将相关指标列入中欧班列开行质量发展水平指标。以时间的维度,通过序关系法、熵权法及乘法组合法确定权重后,再采用障碍度模型评价,评价结果侧重了解其开行质量效益发展趋势。结果表明,中欧班列开行经济效益的重点发展指标是发送箱数、货重和货值。

贵州耕地生态安全评价及障碍因子分析

基于PSR模型构建耕地生态安全评价指标系统,借助熵权法、线性加权法及障碍度评价模型,对贵州2001—2020年的耕地生态安全状况进行评价。结果表明:2001—2020年,全省的耕地生态安全数值在波动变化中逐步增长;压力系统数值变化呈“先升后降”态势;状态系统数值变化呈“V”型;响应系统数值逐年稳定增长。2001—2020年,压力系统障碍度变化与响应系统数值变化呈负相关,状态系统障碍度平稳增长;未来压力系统将成为主要障碍层。第一产业占GDP比、人口自然增长率、农药使用量、化肥使用量等指标是影响全省耕地生态安全的重要因子。

公共交通综合体无障碍度评价简述——日本无障碍设计前沿

近年来,随着城市交通网络的发展,公共交通综合体逐渐成为承载城市居民出行的重要空间。利用人群的多样性以及其室内空间的复杂性,都对无障碍设计提出了很高的要求。日本在无障碍设计及研究领域始终处于世界领先地位,除了设计本身的人性化视点,对已完成项目的后期检证也是不可或缺的一环,即无障碍度评价。本文试图通过目前在日本国内普遍采用的公共交通综合体无障碍度评价的阐述,为我国无障碍化建设提供一些有益的参考。

Evaluation of latent links between irritable bowel syndrome and sleep quality

AIM:To examine the links between quality of sleep and the severity of intestinal symptoms in irritable bow-el syndrome(IBS).METHODS:One hundred and forty-two outpatients(110female,32 male)who met the Rome Ⅲ criteria for IBS with no psychiatric comorbidity were consecutively en-rolled in this study.Data on age,body mass index(BMI),and a set of life-habit variables were recorded,and IBS symptoms and sleep quality were evaluated using the questionnaires IBS Symptom Severity Score(IBS-SSS)and Pittsburgh Sleep Quality Index(PSQI).The associa-tion between severity of IBS and sleep disturbances was evaluated by comparing the global IBS-SSS and PSQI score(Pearson's correlation and Fisher's exact test)and then analyzing the individual items of the IBS-SSS and PSQI questionnaires by a unitary bowel-sleep model based on item response theory(IRT).RESULTS:IBS-SSS ranged from mild to severe(120-470).The global PSQI score ranged from 1 to 17(median 5),and 60 patients were found to be poor sleepers(PSQI>5).The correlation between the global IBS-SSS and PSQI score indicated a weak association(r=0.2 and 95% CI:-0.03 to 0.35,P<0.05),which becomes stronger using our unitary model.Indeed,the IBS and sleep disturbances severities,estimated as latent variables,resulted significantly high intra-subject cor-relation(posterior mean of r=0.45 and 95% CI:0.17 to 0.70,P<0.05).Moreover,the correlations between patient features(age,sex,BMI,daily coffee and alcohol intake)and IBS and sleep disturbances were also ana-lyzed through our unitary model.Age was a signif icant regressor,with patients≤50 years old showing more severe bowel disturbances(posterior mean=-0.38,P<0.05)and less severe sleep disturbances(posterior mean=0.49,P<0.05)than older patients.Higher daily coffee intake was correlated with a lower sever-ity of bowel disturbances(posterior mean=-0.31,P<0.05).Sex(female)and daily alcohol intake(modest)were correlated with less severe sleep disturbances.CONCLUSION:The unitary bowel-sleep model based on IRT revealed a strong positive correlation between the severity of IBS symptoms and sleep disturbances.