Decreasing experiences of home range,outdoor spaces,activities and companions: changes across three generations in Sheffield in north England

Home range is commonly understood to be the distance from home that children are allowed to go in the outdoor environment with the term being used within various academic disciplines. Different factors influence children's home range including traffic, age, parental fears and understandings of what it means to be a good parent. Research addressing home range over different generations has identified a context of changes in the built environment, demography and technology. This paper reports results from three generations of two families in Sheffield in the north of England and confirms a reduction in four major domains: home range, variety of outdoor spaces visited, range of activities undertaken and the number of companions.     

Crowdsourcing Model Research for the Identification of Post-Earthquake Rescue Objects

The quick and accurate identification of post-earthquake rescue objects can minimize the casualties and property loss caused by earthquakes. With the rapid development of remote sensing technology, rescue objects can be identified through high-resolution remote sensing images. There are two main categories of approaches to identify rescue object through high-resolution images: automatic extraction by a computer and visual judgment by professionals. Although results can be obtained quickly by using automatic extraction, the accuracy of the results is unacceptably low. For visual judgment, the large demands for time and professionals restrict its wide practical application. In this study, we introduce crowdsourcing into the identification of post-earthquake rescue objects. First, we integrate the advantages of the computer and crowdsourcing, which means that the computer takes advantage of the speed of information processing, while crowdsourcing makes full use of human recognition capabilities. Second, we take visual judgment tasks out of the hands of professionals and entrust the tasks to workers in a crowdsourcing platform. Not only are the human resources infinite, but we can also improve the efficiency of identifying rescue objects. Third, we propose a crowdsourcing model that improves the quality of the results and saves human resources. Finally, experimental results demonstrate that our solution is feasible.     

中日关于“以上”和“以下”等概念的界定

在汉语和日语中,经常使用表示数量和程度范围的“以上”、“以下”、“不满（未满）”、“超过”等词汇。这些词汇来自中国汉语,但日本比中国界定明确,使用规范。我国汉语应该从中吸取有益的养分,这对于规范地使用汉语和丰富汉语具有重要的现实意义。     

对剩余价值范畴的重新界定

传统政治经济学对剩余价值范畴的定义在其存在的条件、来源和剩余价值的分配等方面均过于狭窄,且界定时采用了非经济的标准,这既有悖于马克思的有关论述,也与当前的实际情况不完全吻合.本文以马克思的有关经典论述为依据,并结合经济生活的实际,对传统剩余价值范畴进行深入思考,以澄清人们的模糊认识.     

五代至元西安城垣范围及建制特点

本文在占有详实资料和实地考察的基础上,运用城市历史地理学方法,分析了五代至元时期与西安城(新城)督建者韩建有关的两个问题,探讨了此时期西安城的城垣范围及其建制特点,并揭示出西安城城墙、城门和城角的具体特征,从而全面地揭示了五代至元西安城垣的面貌。     

高校旅游毕业生就业统计范围问题研究

由于观念与技术等问题,我国现行的高校旅游就业统计范围,在专业和行业界定上存在着明显不足,以致人们对于旅游学科在教育体系中的地位以及旅游教育的投入与产出的认识出现严重误解。科学运用旅游卫星账户,参考相关旅游增加值,正确统计高校的旅游就业范围,符合国民经济就业统计的实际需要,也有利于端正人们对旅游就业范围的客观认识。     

明代辽东中层行政管理区划的形成——以辽东苑马寺卿兼职兵备事为线索

辽东是明代边疆防御体系中的重要地区。由于各种历史地理因素所限,明代辽东地方行政实行军事化的卫所制管理,以一个都司管理25个实土卫,一度形成了行政管理幅度过大、难以实行有效管理的局面。因此在嘉靖年间,辽东全境被划分成6个行政地理单元分别管理,同时从"军管型政区"向"文管型政区"转变,将相邻各系统文官都纳入当地管理体制,连朝廷派驻辽东管理马政的苑马寺卿和行太仆寺卿也各领一道辖境,处理地方军政事务,从而使辽东形成了事实上的三级行政区划。这种增加行政管理层级、缩小管理幅度、实行军事管理与文官监督相结合的处理方式,体现了明代地方行政管理中因地制宜的思路,同时也反映出明代辽东边疆经略中的许多问题。     

The ballistics of seventeenth century musket balls

ABSTRACT

This paper investigates the firing of seventeenth Century musket balls. Prior to this research, the main concerns with making range predictions were associated with the deformed shape of the musket balls affecting their drag coefficient and therefore their distance to ground impact. However, the distance due to bounce and roll after initial impact has been unknown. In this work, the distance travelled after the first ground impact greatly exceeded expectations, with the musket balls approximately doubling the distance to their final resting positions. From these findings the initial factors thought to have had high relevance to the final resting position of the musket ball (velocity variation and drag co-efficient) become less significant and factors such as ground hardness become more prominent. The knowledge gained during this investigation will allow more accurate information to be obtained on the firing positions of opposing forces during conflicts in the English Civil War.     

Editorial

Abstract

A recent online article in The Daily Beast listed archaeology as one of the thirteen most useless undergraduate degrees. The article failed to identify transferable job skills gained while engaged in archaeological work. Further, archaeological field programmes and labs offer an alternative learning environment that benefits some students. This article reviews two archaeological projects that used archaeology as a form of social activism to provide employment and education to an under-served community as a fundamental aspect of its goals. The Hopedale Archaeology Project is an archaeology field project based in a north-east Canadian community that provides education and work opportunities for Inuit students. The Veterans Curation Program based in the United States provides temporary employment to recently discharged military veterans in an archaeological and archival curation lab. These programmes assist individuals to re-establish themselves within the workforce and add to their academic and professional growth, as well as incorporate a public outreach component that makes archaeology and history more accessible to the public.     

Range of motion and energy cost of locomotion of the late medieval armoured fighter: A proof of concept of confronting the medieval technical literature with modern movement analysis

ABSTRACT

Study of technical, normative, and narrative medieval literature and of archaeological pieces allows the motor skills of armoured members of the aristocracy to be outlined but not quantified. The authors present novel data on the impact of wearing armour on both the freedom of movement and the energy cost of locomotion, and confront the results to systematic analysis of medieval written sources. An accurate harness replica realized in an informed archaeological experimental way, close to medieval material and manufacturing conditions, was used for the experiments. Measurements of the energy cost of locomotion in and out of armour were taken during walking and running on a treadmill. Gait analysis and range of motion of joints were performed with 3-D kinematics. The results indicated an increase in the energy cost of locomotion in slight excess to the added weight and for most movements studied reductions in the range of motion over the joint, potentially to the advantage of the wearer during combat. This proof of concept appears promising for further study in this field of scholarly endeavor.