我国沿海港口港城关系协同发展与驱动机制研究

近年来,随着我国港口资源整合、港区功能调整和港口城市的转型升级,沿海港口与所在城市的关系发展面临新的变化和挑战。本文以我国沿海港口为例,结合定量分析与定性讨论,聚焦我国沿海港口港城关系问题,剖析港城关系的演变及驱动机制。研究发现：我国大部分沿海港口已进入极度协调发展阶段,但发展趋势逐渐放缓,区域分化特征显著,港城协同度差距呈现再扩大的发展趋势。在研究期间,我国城市驱动型港口城市数量显著增加,港口驱动型和港城互驱型港口城市数量减少。建议通过政府政策引导、港产城融合发展和港口转型升级等方式,不断提升我国沿海地区港城关系整体协调发展水平,为新时期我国沿海港口与所在城市的高质量发展提供重要支撑。     

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.     

Maritime Aspects of Medieval Siraf,Iran: a pilot project for the investigation of coastal and underwater archaeological remains

Siraf is well‐known archaeologically and historically as an ancient port in the Persian Gulf that prospered during the medieval period. Siraf played a leading role in facilitating maritime and terrestrial trade, connecting long‐distance Indian Ocean and China routes with those in the Gulf region. Despite its history, no previous research has been dedicated to the maritime infrastructure of Siraf. Through the ‘2012 Siraf pilot project’ a preliminary survey of the underwater and shoreline remains of this ancient port city was conducted. The site's location is unique in many respects to trade routes and logistical considerations; however, its maritime infrastructure is difficult to assess in light of the extensive threats to the site.     

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.     

河口港城市形态演变的分析研究——兼论宁波城市形态的历史演变及发展

该文在对港口城市形态的影响因素的分析基础上,提出了港口城市形态的演变机制和河口港城市形态的演变规律。并且通过对宁波城市形态历史演变的实证分析,结合宁波城市发展的战略目标,提出了宁波城市形态的合理发展趋势。     

港口经济及其地域空间作用:对鹿特丹港的案例研究

港口经济在国民经济中起着越来越重要的作用,面临全球化竞争的挑战,借鉴国外港口经济的经验对我国三角洲地区和海港城市的发展具有重要意义。本文将分析荷兰鹿特丹港的港口经济发展,研究港口产业对于港口地区的社会经济带动作用,港口产业的时间演替规律和在港口产业带动下的港口地区地域空间扩展规律。