Ambitious deep energy retrofits of buildings to accelerate the 1.5°C energy transition in Canada

Scientists advise limiting global warming to 1.5°C with substantial actions by 2030. Our viewpoint argues that climate response strategies in Canada have underemphasized and underestimated the potential contribution deep energy retrofits can make to greenhouse gas (GHG) emissions reductions, leading to inadequate responses in the building sector, and that Canada can (and should) be ambitious with building retrofits over the next decade. GHG savings from building retrofits can be realized more quickly than GHG reductions from other sectors, and either deliver net cost savings or are cost‐effective when compared to other mitigation measures. Retrofits can also provide social and economic benefits, such as improved health and comfort, and lower energy costs. This paper reviews energy use and building retrofits in Canada and argues the following should be implemented: (1) focus innovation on deep energy retrofit processes, not singular retrofit actions; (2) maximize both social and environmental benefits; (3) improve data gathering and availability for analysis and delivery; (4) innovate for a process of decisions and to avoid “dropouts” during the retrofit process; and (5) focus innovation on business models that maximize benefits.     

规制缓和、结构调整与竞争效率——中日韩电力体制改革比较

本文以中国、日本、韩国电力体制改革实践为比较对象,从改革的起点、目标的选择、引入竞争的方式、电力监管、电力民营化、改革的成效几个角度进行了分析,力求得到一些对深化中国电力市场化改革有意义的启示。     

The Transportation Sector of India's Economy: Dry Ports as Catalysts for Regional Development

Two East Asian specialists review the development of dry ports in India as part of a broader national program to eliminate transportation bottlenecks, improve transport efficiency, and spur the economic development of interior regions by lowering road and rail freight tariffs, and thus decreasing the costs of imports (and making exports more competitive). A key focus is on comparing the relative efficiency of public- versus private-sector operation of dry ports, and on examining the effects on dry port efficiency of current Indian Government policy. The authors test two hypotheses relating to the efficiency of port operations using information derived from their field study/interviews at 28 dry ports in Northwest India (reflecting three different types of ownership/operation combinations) as well as quantitative data measuring port efficiency.     

A method for estimating edge length from flake dimensions: use and implications for technological change in the southern African MSA

This paper presents a method for estimating edge length from flake dimensions. Comparison of estimated values with data from measured flake edges demonstrates the robusticity of the method. Building on the work of Braun (Braun, D.R., 2005. Examining flake production strategies: examples from the Middle Paleolithic of Southwest Asia. Lithic Technology 30, 107–125; Braun, D.R., Harris, J.W.K., 2003. Technological developments in the Oldowan of Koobi Fora: innovative techniques of artifact analysis and new interpretations of Oldowan behavior, in Mora, R., de la Torre, I. (Eds.), Oldowan: Rather More than Smashing Stones. Treballs d’ Arqueologia 9, pp. 132–144) this estimate is used to generate an edge length to mass value for complete flakes—taken to be a proxy for flaking efficiency. It is shown that this value is useful in tracking the onset, variability and decline of a well known technological phase—the Howiesons Poort of South Africa. The results suggest that the Howiesons Poort was a time in which flaking efficiency was emphasised. Furthermore, comparison of upper limits of edge to mass values for different raw materials may provide an insight into changes in raw material selection.     

关于控制我国行政成本的思考

控制行政成本,提高行政效率,是实现行政管理体制改革的核心问题。要降低行政成本,必须注重行政成本宣传,强化行政成本意识;转变政府职能,控制政府机构规模;优化政府管理流程,提高工作效率;控制公务人员膨胀,规范职务消费行为;建立科学决策机制,提高领导决策水平;增强财政预算的刚性约束,健全财政预算管理机制;改革行政部门业绩考核方式,建立科学的绩效评估制度;健全社会监管体系,加大社会监督力度。     

Gas breakthrough experiments on fine-grained sedimentary rocks

The capillary sealing efficiency of fine‐grained sedimentary rocks has been investigated by gas breakthrough experiments on fully water saturated claystones and siltstones (Boom Clay from Belgium, Opalinus Clay from Switzerland and Tertiary mudstone from offshore Norway) of different lithological compositions. Sand contents of the samples were consistently below 12%, major clay minerals were illite and smectite. Porosities determined by mercury injection lay between 10 and 30% while specific surface areas determined by nitrogen adsorption (BET method) ranged from 20 to 48 m² g ^{? 1}. Total organic carbon contents were below 2%. Prior to the gas breakthrough experiments the absolute (single phase) permeability (k_abs) of the samples was determined by steady state flow tests with water or NaCl brine. The k_abs values ranged between 3 and 550 nDarcy (3 × 10^?21 and 5.5 × 10^?19 m²). The maximum effective permeability to the gas‐phase (k_eff) measured after gas breakthrough on initially water‐saturated samples extended from 0.01 nDarcy (1 × 10^?23 m²) up to 1100 nDarcy (1.1 × 10^?18 m²). The residual differential pressures after re‐imbibition of the water phase, referred to as the ‘minimum capillary displacement pressures’ (P_d), ranged from 0.06 to 6.7 MPa. During the re‐imbibition process the effective permeability to the gas phase decreases with decreasing differential pressure. The recorded permeability/pressure data were used to derive the pore size distribution (mostly between 8 and 60 nm) and the transport porosity of the conducting pore system (10^‐5–10^‐2%). Correlations could be established between (i) absolute permeability coefficients and the maximum effective permeability coefficients and (ii) effective or absolute permeability coefficients and capillary sealing efficiency. No correlation was found between the capillary displacement pressures determined from gas breakthrough experiments and those derived theoretically by mercury injection.     

试论新闻党性原则的时代特色

本文就新时期如何全面准确理解新闻党性原则,牢牢把握和坚持新闻党性原则的时代要求,科学处理新闻党性与人民性的关系、党性原则与尊重规律的关系、社会效益与经济效益的关系以及主旋律与多样化的关系进行了论述,阐明了只有把握新闻党性原则的时代特色,才能不断开创社会主义新闻事业的新局面。     

中国星级酒店相对效率集聚的空间分析及提升策略

选取大陆31个省级区域2000-2009年的面板数据,基于改进的DEA模型,对省际星级酒店的相对效率进行测算,进一步对相对效率的空间集聚态势及影响机理进行分析。大陆星级酒店相对效率的变动主要受规模效率驱动,大部分省份星级酒店的规模效率处于递减状态,这种粗放型的增长方式从长远角度看,不利于星级酒店业的健康良性发展。中国星级酒店相对效率及其空间集聚态势都表现出与经济发展水平负相关的态势,各项效率的影响机理不同。最后基于波士顿矩阵分析法,对提高星级酒店相对效率提出相应的策略。     

如何提高信息技术课的课堂效率

随着信忠社会的到来,中学计算机教育正在蓬勃发展,不断加快教育改革步伐,不断探索有效的教学方法,利用现代化的教学手段,提高学生的计算机知识水平和实践动手能力,以提高未来建设者的科学文化素质、能力和科技意识,是中学信息技术教育的根本任务。如何在本课程的课堂教学中挖掘学生的学习动力、提商课堂教学效率,是我们教师应该不断探索的课题。     

Do municipal unions improve cost efficiency for the social function? A quasi-experimental endogenous stochastic frontier approach

Homogeneous national policies can generate heterogeneous effects on the territory. This paper aims to verify the impact of the entry of single Italian municipalities into an inter-municipal association on the unitary costs of the social services supplied to the local communities. Panel cost stochastic frontier model in the presence of endogeneity has been introduced based on two pillars: a counterfactual setting to verify the aggregation effects concerning a set of similar municipalities and the use of a cost efficiency estimation methodology which considers the endogeneity of output with respect to cost. The results of our analysis show that the effects of adopting associated forms of service delivery can be very multifaceted and diversified according to the typology and the degree of implementation of the Municipal Union itself. The analysis sheds light on the effects of municipalities' organisational choices, addressing the consolidation of small municipalities not in binary terms but also—and above all—suggesting that it is the type of union that impacts the possibility of convergence towards greater cost efficiency.