Effect of obstacle density on the travel time of the visually impaired people

Because China has put more emphasis on people with disabilities, their living conditions and protection have received increasing attention. In an emergency, the visually impaired people are limited in their ability to evacuate, especially along egress paths with obstacles. This paper studied the relationship between the travel time of visually impaired people and obstacle density in their path. Eight sighted people and 32 people with visual impairments were chosen to carry out the walking experiment. The results of the experiment showed that the travel time of sighted people was shorter than that of visually impaired people under the same obstacle and non‐obstacle situations. Based on the analysis of variance of travel time, it was clear from the results that the travel time of the visually impaired people rapidly increased when there were obstacles. When the obstacle density was kept to within a certain range, there was no obvious increase in travel time. Once the density exceeded this range, there was another obvious increase. Based on this result, it can be seen that keeping the obstacle density to within a certain range could be helpful for the visually impaired people during an evacuation when the egress paths cannot be made obstacle‐free.     

感官代偿在药品盲用无障碍包装设计中的应用研究

目的 针对盲人难以精准、便捷、安全服药的问题，基于感官代偿原理，研究如何利用触觉、听觉等感官代偿的潜在优势设计“适盲性”药品无障碍包装，辅助盲人实现科学、合理、精准用药。方法 基于盲人的生理和心理特点，分析药品包装在适应盲人使用时的“痛点”，在把握盲人感官代偿机理的基础上，结合具体案例，研究药品包装适盲性无障碍设计的途径和方法。结论 在基于盲人特殊的感官代偿机制设计盲用无障碍药品包装时，要理性、深度地思考如何最大限度地激发触觉和听觉的代偿潜能来解决盲人的服药障碍问题。通过简洁规范的盲文标注设计、科学合理的适盲性结构设计、智能交互的语音指令设计等方式，改善药品包装的核心信息呈现方式，提升药品信息传递的便捷性和准确性，使盲人能够独立自主地识药、取药和服药。     

ED-SWE: Event detection based on scoring and word embedding in online social networks for the internet of people

Online social media networks are gaining attention worldwide, with an increasing number of people relying on them to connect, communicate and share their daily pertinent event-related information. Event detection is now increasingly leveraging online social networks for highlighting events happening around the world via the Internet of People. In this paper, a novel Event Detection model based on Scoring and Word Embedding (ED-SWE) is proposed for discovering key events from a large volume of data streams of tweets and for generating an event summary using keywords and top-k tweets. The proposed ED-SWE model can distill high-quality tweets, reduce the negative impact of the advent of spam, and identify latent events in the data streams automatically. Moreover, a word embedding algorithm is used to learn a real-valued vector representation for a predefined fixed-sized vocabulary from a corpus of Twitter data. In order to further improve the performance of the Expectation-Maximization (EM) iteration algorithm, a novel initialization method based on the authority values of the tweets is also proposed in this paper to detect live events efficiently and precisely. Finally, a novel automatic identification method based on the cosine measure is used to automatically evaluate whether a given topic can form a live event. Experiments conducted on a real-world dataset demonstrate that the ED-SWE model exhibits better efficiency and accuracy than several state-of-art event detection models.     

KSOD系列矿山架空乘人装置在超化矿的应用

介绍了KSOD系列矿山架空乘人装置主要的技术参数及工作原理,针对其在郑煤集团超化矿的应用中容易出现的各种安装、调试问题,结合KSOD架空乘人装置自身的特点和井下安装环境,提出了相应的解决对策,较好的解决了该装置中出现的一些问题,具有一定的实用性。     

A Comparison of Leisure Time Spent in a Garden with Leisure Time Spent Indoors: On Measures of Restoration in Residents in Geriatric Care

During the past 20 years, findings have indicated that nature plays an active role in helping people recover from stress and fatigue. Two of the most cited theories in this field are Rachel and Stephen Kaplan's theory of recovery from Directed Attention Fatigue in nature and Roger Ulrich's theory of aesthetic and affective responses to natural environments and stress recovery. One aim of the present study is to test whether being outdoors in a green recreational environment causes people to be more focused, compared to being in a room indoors (in line with hypotheses suggested by the Kaplans). Another aim is to test whether people experience stress reduction, i.e. as evidenced by changes in blood pressure and heart rate, if they are placed in an environment with many green elements (in line with hypotheses suggested by Ulrich). The overall study design is that of an intervention study. Fifteen elderly persons living at a home for very elderly people participated. Their powers of concentration, blood pressure and heart rate were measured before and after an hour of rest in a garden or in an indoor setting. Seven elderly people were randomly chosen to have their first series of tests in a garden, while eight elderly people had their first series of tests indoors. The results indicate that powers of concentration increase for very elderly people after a visit to a garden outside the geriatric home in which they live, compared to that after resting indoors in their favourite room. The results did not show any effects on blood pressure or heart rate. It is suggested that having a one-hour rest outdoors in a garden setting plays a role in elderly people's powers of concentration, and could thereby affect their performance of activities of daily living. One important factor in this study was that both the outdoor environment and the indoor environment at the home were highly valued by participants.     

摩梭文化习俗影响下的摩梭民居

民居是特定地域社会文化的映射,位于我国云南省宁蒗县与四川省盐源县交界处存在着一个至今还保持着母系氏族大家庭的"国度"--"摩梭女儿国".摩梭村寨中的摩梭民居介入和融合了摩梭文化习俗,形成了独特的建筑文化圈.该文对摩梭村落选址聚落、摩梭民居类型、居室功能、基本构造和建筑装饰及其民俗承传作了初步研究.     

新建筑的呼唤--绿色和人文及健康

通过对“绿色建筑”、“人文建筑”、“健康建筑”的概念、意义及具体做法的介绍,体现新建筑的三大需求,展望建筑业的发展方向,从而加快建筑业的发展进程。     

浅议中原传统民居研究的必要性

对传统民居进行了分析比较,寻找传统民居与地域、文化等的关系,分析了传统民居的建筑特色,并结合中原地区的地域特色谈中原地区民居研究的价值,阐述了传统民居模式在我国当代住居中的传承价值.     

Farmers,fires, and forests: a green alternative to shifting cultivation for conservation of the Maya forest?

When fires blazed through Mexico's forests in 1998, the country experienced a new sense of urgency in its attempts to combat ecosystem degradation and loss of biodiversity. Secretaría de Medio Ambiente y Recursos Naturales (SEMARNAT, the federal environmental protection agency) identified the use of fire in agriculture as a major contributor to the conflagration. Traditional “slash-and-burn” systems are still widely practiced in the southeast of Mexico, and finding a substitute for burning, especially in and near protected areas, became imperative (SEMARNAT, 2001). Experience from different parts of Central America indicated that green manure/cover crop systems (g/cc) could increase soil fertility, reduce erosion, control weeds and raise the yield of maize; the hope was that this system could replace slash-and-burn practices with their attendant risk of forest fires. We present the case study of a project introducing a green cover crop to traditional, resource-poor, maize farmers in one community of the Yucatan peninsula and preliminary results from a similar project in the Calakmul Biosphere Reserve, discussing the data in the light of the on-going debates concerning both fire policy and soil erosion. We conclude that, in spite of demonstrating some advantages, adoption in the peninsula has been hindered by environmental, economic and socio-cultural factors. Mexican efforts to eliminate fire from the forests must also be assessed with reference to the scientific literature by fire experts and historical ecologists, indicating that prohibition of small fires may actually decrease total biodiversity, while increasing the probabilities of catastrophic forest fires.     

关于城市环境设计的几点认识

文章简述了城市设计中自然条件的利用、历史条件的利用、城市景观设计、城市建筑设计等一系列问题,强调只有综合考虑各种不同因素对城市进行总体艺术布局,才能提高整个城市环境质量。