资本市场对东方钽业发展的促进作用

从宏观经济的角度介绍了资本市场的成因与作用。对直接融资和间接融资方式的优缺点进行了深入的比较。详细阐述了东方钽业上市融资后对企业发展的巨大推动作用。     

文化资本视角下历史街区再生理念、框架和策略 ——以日本高山城下町和南京小西湖历史街区为实证

历史街区拥有保护和发展的双重要义, 历史街区再生需要平衡好利用好城市中的文化 力、经济力和社会力,在人文价值、当代需求和 持续发展之间找到可操作的秩序路径。基于 此,论文回归历史街区活态遗产的人文社会属 性,从“作为城市文化资本的历史街区”切入研 究,重点围绕街区遗产资源的价值潜力,架构了 历史街区再生解释框架,并在此框架下结合对日 本高山和南京小西湖两个历史街区再生案例的 审视分析,探讨了文化资本增量积累下的历史街 区再生策略。研究明晰了建成遗产作为可持续再 生驱动力的价值作用,为本土实践提供了新的思 想和方法借鉴。     

美国公共基础设施实施保障的经验及借鉴——深圳南山区案例的评估与反思

本文借鉴美国公共基础设施实施保障的国际经验,对深圳市南山区公共基础设施的实施情况进行评估与反思。首先,文章介绍了美国捆绑式开发政策、开发影响费、充足公共设施条例、阶段式开发等保障公共基础设施工具;之后以深圳市南山区公共基础设施实施程度的评估为例,反思中国城市在公共基础设施规划、实施和评估中存在的一些常见问题;并基于美国公共基础设施实施保障的国际经验,提出应进一步编制更细致的实施计划,建立多渠道的融资保障机制及加强定期监管与评估等建议。通过学习美国公共基础设施实施保障经验,对完善中国城市规划评估体系,促进城市公共基础设施的实施提供借鉴,进而为提高中国城市居民生活水平提供保障。     

The economic feasibility study of a 100-MW Power-to-Gas plant

Power-to-Gas (PtG) is a grid-scale energy storage technology by which electricity is converted into gas fuel as an energy carrier. PtG utilizes surplus renewable electricity to generate hydrogen from Solid-Oxide-Cell, and the hydrogen is then combined with CO₂ in the Sabatier process to produce the methane. The transportation of methane is mature and energy-efficient within the existing natural gas pipeline or town gas network. Additionally, it is ideal to make use of the reverse function of SOC, the Solid-Oxide-Fuel-Cell, to generate electricity when the grid is weak in power. This study estimated the cost of building a hypothetical 100-MW PtG power plant with energy storage and power generation capabilities. The emphasis is on the effects of SOC cost, fuel cost and capacity factor to the Levelized Cost of Energy of the PtG plant. The net present value of the plant is analyzed to estimate the lowest affordable contract price to secure a positive present value. Besides, the plant payback period and CO₂ emission are estimated.     

Optimisation of solar-hydrogen power system for household applications

A numerical method was developed for optimising solar–hydrogen energy system to supply renewable energy for typical household connected with the grid. The considered case study involved household located in Diyala Governorate, Iraq. The solar–hydrogen energy system was designed to meet the desired electrical load and increase the renewable energy fraction using optimum fuel cell capacity. The simulation process was conducted by MATLAB based on the experimental data for electrical load, solar radiation and ambient temperature at a 1-min time-step resolution. Results demonstrated that the optimum fuel cell capacity was approximately 2.25 kW at 1.8 kW photovoltaic power system based on the average of the daily energy consumption of 6.8 kWh. The yearly renewable energy fraction increased from 31.82% to 95.82% due to the integration of the photovoltaic system with a 2.25 kW fuel cell used as a robust energy storage unit. In addition, the energy supply, which is the economic aspect for the optimum system, levelised electricity cost by approximately $0.195/kWh. The obtained results showed that the proposed numerical analysis methodology offers a distinctive property that can be used effectively to optimise hybrid renewable energy systems.     

从两座机场工程对清水混凝土发展的认识

北京首都机场航站楼和昆明新机场航站楼都在天花、柱、墙等部位大面积应用清水混凝土,来做建筑装饰效果。随着清水混凝土技术的日臻完善和规范,清水混凝土的耐久性和清水艺术的表现力是待研究的课题,此外,研发现浇混凝土的替代产品和发展预制、仿清水混凝土以及工厂化专业化生产,也是未来清水混凝土的发展趋势。     

2010年"欧洲文化之都"活动——德国埃森鲁尔旧工业区转型新路径

德国鲁尔区旧工业区的空间转型已进入到一个新的阶段,通过介绍埃森市及其所在的鲁尔区2010欧洲文化之都的产生背景和活动开展情况.了解德国旧工业区转型是如何与文化活动相结合,并最终推动产业及空间转型的.以期为同样面临产业转型的中国类似城市和地区提供借鉴和参考.     

New Latency Model for Dynamic Frequency Scaling on Network-on-Chip

Modulating both the clock frequency and supply voltage of the network-on-chip （NoC） during runtime can reduce the power consumption and heat flux, but will lead to the increase of the latency of NoC. It is necessary to find a tradeoff between power consumption and communication latency. So we propose an analytical latency model which can show us the relationship of them. The proposed model to analyze latency is based on the M/G/1 queuing model, which is suitable for dynamic frequency scaling. The experiment results show that the accuracy of this model is more than 90%.     

企业管理的第二次飞跃

企业管理在计划经济体制下主要任务是产品的生产，在商品经济条件下则转为商品的生产，所以企业经营者关于资本经营的知识和本领是搞活企业的内因。资本经营是以资本重组为手段，以资本的营运产生盈利。     

对可保持增长率相关问题的探讨

本文对可保持增长率下的外部融资、净资产增长率、财务杠杆分析时认为：[1]在一定前提下，能以可保持增长率用销售百分比法融资；[2]以期初净资产计算的净资产增长率符合可保持增长率假定；[3]用利息费用、息税前利润计算的负债成本、销售利润率不变时财务杠杆作用不变；如果资产营运效率、劳动生产率、管理尚存潜力，或销售、财务结构等达不到要求，那么用可保持增长率融资可能是外延型扩大再生产。