凿井水下底卸式自动卸料吊桶

吊桶是立井井筒开凿时期提升矸石和运送材料及升降人员的主要容器,吊桶的卸矸目前多采用挂钩式或座钩式卸料方式;但是随着矿井的开凿深度不断延伸,在过透水层时,由于探放水不及时或涌出水比较大,超出了井筒的排水量,或者是由于冷冻井在解冻后,井筒的井筒质量不过关,各别井壁也会发生透水事故;这就会出现淹井事故,有时淹井深度达二三百米。对于处理这种淹井事故,往往只有一个办法,那就是用沙或混凝土对井筒回填;这就需要吊桶在下到几百米下的水底自动把料卸掉,但现在矿井常用的挂钩式吊桶和座钩式吊桶已经不能满足这个需要了。     

Contesting rural recreation: the battle over access to Windermere

Different forms of recreation are competing increasingly for space to operate, and arbitrating between these competing claims can be fraught with difficulties. This paper examines the recent conflict over attempts to impose a speed limit, and hence prevent power boating and associated activities, on Windermere in the English Lake District. The competing arguments, as presented to a public inquiry, are assessed in the light of the Inspector's verdict on these issues, and the political responses to the verdict. The case is likely to have a much wider significance in terms of land use planning policy in Britain, both in National Parks and rural areas more generally.     

铁路桥涵结构极限状态法设计检算分析

基于可靠度理论的极限状态设计法已经成为国际工程结构设计的主流方法。通过对既有桥梁、墩台、涵洞等结构采用极限状态设计法进行设计检算,并与容许应力法计算下的受力、变形等结果进行对比分析,校核极限状态法设计规范中相关参数指标的合理性,并对铁路桥涵极限状态法设计规范的修改完善提出相关建议。     

商业银行信用风险形成机理分析

该文首先概述了企业过度负债现象及其负面效应 ,然后研究了国有商业银行信用风险的形成机理 ,揭示了其内在原因 ,即资金不能吸收。     

日本经验与东亚发展型国家

日本经济模式的显著特点就是政府主导,东亚其他国家和地区的发展模式又与日本发展模式极为相似,这就是通常所说的东亚"发展型国家"。那么,日本政府导向型经济的具体特征是什么?对其他东亚国家和地区有什么影响?发展型国家与比较优势是怎样结合的?日本主导的东亚经济格局正在发生那些变化?本文力图回答这些问题。     

Liquidity Provision of Limit Order Trading in the Futures Market Under Bull and Bear Markets

Abstract:  This study investigates how limit orders affect liquidity in a purely order-driven futures market. Additionally, the possible asymmetric relationship between market depth and transitory volatility in bull and bear markets and the effect of institutional trading on liquidity provision behavior are examined as well. The empirical results demonstrate that subsequent market depth increases as transient volatility increases in bull markets. Market depth exhibits significantly positive relationship to subsequent transient volatility in bull markets. Additionally, although trading volume positively influences transient volatility in bull markets, no such relationship exists in bear markets. Liquidity provision decreases when institutional trading activity intensifies during bear markets. Thus, liquidity provision for limit orders differs between bull and bear markets.     

由我国上市公司债务处置引起的思考

债务比率上限作为我国公司上市或配股的重要约束条件之一,使上市公司对债务处置“乐此不疲”,但不管从筹资者、投资者、证券监管还是证券市场角度进行分析,债务处置的作用均不尽如人意,进而提出债务上限规定的不唯一性和连续性行为规范监管的建议,来维护和保障多方的利益。     

论城管行政执法体系的构建

我国各地的城管部门虽然有着同一称谓,但是其职责范围却不尽相同。在城管执法人员的编制上,有的是机关编制,有的是事业编制,有的是合同工,在执法的主体资格上也存在很大差异。目前我国还没有统一的相关城管执法立法,城管在执法过程中常常面临职责不清的情况。在执法过程中,执行难的问题时常发生。所以有必要对于城管执法问题进行研究,构建符合我国国情的城管执法体系,厘清城管执法与其他行政部门之间的责任范围,解决好城管执法过程中存在的相关法律问题。     

杭州市工业遗产旅游发展现状剖析

旅游业的竞争和工业遗产的出现,使得工业遗产旅游逐渐成为现实与理论的热点问题。本文以杭州市所整理的工业遗产为基础,列举了杭州市工业遗产的规模,并根据开发方向和吸引力,将工业遗产分为历史功能延续类、生产旧址类和建筑成就类三种类型,阐述了杭州市发展工业遗产旅游在数量和类型方面所具备的的资源优势。结合目前的形式,分析了杭州市在潜在客源、发展经验、地理布局、节庆活动、政策支持方面的优势,以及在感知形象、价值共识、企业意识、区域竞争等方面的挑战,进而对杭州市发展工业遗产旅游提出建议。     

Holidays and economic growth: Evidence from a panel of Indian states

The number of holidays differs significantly across Indian states. Moreover, some of the governing political parties have been accused of using holidays as a tool either to mollify disgruntled workers or to woo voters before the state elections. In this context, this paper explores the relationship between the number of holidays and economic growth across 24 Indian states, spanning the period 2008–2016, by employing a panel model analysis. The paper presents evidence suggesting that holidays seem to affect growth negatively in the rich states but are inconsequential for the growth performance of the poor states.