国内外雨水花园研究综述

系统归纳国内外雨水花园的研究现状,明确了国内的研究内容主要涉及雨水花园的起源与发展、国外优秀案例介绍、雨水花园的营造技术、雨水花园场地试验及模型构建等;国外的研究内容主要涉及雨水花园的水文模拟研究、土壤渗透力研究、污染物滞留能力研究、不同植物应用对水文的影响、建造及应用等,为今后的雨水花园研究工作奠定基础和提供借鉴。     

晋东南传统聚落水环境适应性营造智慧 — —以晋城市泽州县南峪村为例

水环境的适应性营造是生态适应性 的重要组成部分。为了探究晋东南水环境的 适应性,研究在现场调查和建筑测绘的基础 上,利用空间句法软件Depthmap分析选址布 局与水环境物质底板的关系,将晋东南传统 聚落水适应性环境营造总结为“双层循环子 系统”的宏观框架和“单一元素多功能使用” 的系统特征,同时将其微观呈现归纳为四个方 面。得出结论：第一,城市化背景下传统聚落 的变革模式应该延续“缓慢渐进的适应模式” 来创造和改善人居环境。第二,“从与自然共 生的角度出发”和“整体与个体相结合”是晋 东南传统聚落水适应性环境营造经验总结, 对解决现代城市问题有重要的借鉴作用。     

用修正淬透性系数法对反应堆压力容器锻件RTNDT数值的预估

分析反应堆压力容器（RPV）锻件制造过程中关键化学元素含量及基准无塑性转变温度（RTNDT）数值，通过引入修正淬透性系数，建立了反映RTNDT变化规律的修正淬透性系数函数表达式，并给出了实例验证，结果表明，通过本文建立的修正淬透性系数函数式可以比较精确地预估RPV锻件的RTNDT值。      

Analysis of the impact of PCI planning on downlink throughput performance in LTE

The planning of Physical Cell Identities (PCI) has a strong impact on the performance of Long Term Evolution cellular networks. Although several PCI planning schemes have been proposed in the literature, no study has quantified the performance gains obtained by these schemes. In this paper, a comprehensive performance analysis is carried out to quantify the impact of PCI planning on user quality of service and network capacity in the downlink of LTE. First, an analytical model for the influence of PCI planning on reference signal collisions is developed. Based on this model, different PCI planning schemes are tested on a dynamic system-level simulator implementing a macrocellular scenario. During the analysis, both Voice-over-IP and full buffer services over time-synchronized and non-time synchronized networks are considered. Results show that call blocking and dropping for real-time services and user throughput for non-real time services can be significantly improved by a proper PCI plan.     

A compilation of patents related to mechanical metrology standards and high-precision measurement of mechanical quantities

The paper aims to provide a source of information regarding the measurement of physical quantities, specifically those related to mechanical metrology. Since there is a lack of literature reviews referencing patents as a way of gathering useful information, we performed a systematic search for patents that could solve practical problems in this field. The methodology used focused on one of the most comprehensive patent database, Orbit.com, covering about 70,000,000 documents. This text gives a quick look at the fundamentals of the measurement literature and then points out the state-of-the-art concerning patents in the area of study. Additionally, data analysis shows the trends in the last five decades of patents about the subject. In total, 5686 documents are found and we compiled 10 examples of relevant patents for the quantities Length, Temperature and Mass, making this article a source of information for both scientific and non-scientific metrology community.     

How many reference patterns can improve profitability for real-time trading in futures market?

Investors in futures market used to employ trading system which depends on reference pattern (template) to detect real-time buy or sell signal from the market. Indeed they prepare in advance a number of reference patterns that market movement might follow, and then match the current market with one of reference patterns. One popular way to prepare templates is to fix a relatively small number of them which represent possible market movements efficiently. The underlying assumption of this approach is of course that the current market movement is close enough to one of the templates. However, there is always a calculated risk that the current market is close to none of them sufficiently. In this article we investigate the issue of appropriate number of templates (or template cardinality I) in terms of profitability. We will show that one may improve profitability by increasing I and that random pattern sampling plays a key role in such case. An empirical study is done on the Korean futures market.     

Validation of analytical methods for nuclear spent fuel reprocessing

For more than 50 years, CETAMA, the Commission for establishment of analytical methods from the French Alternative Energies and Atomic Energy Commission, has provided Certified Reference Materials and Interlaboratory Comparisons for the development and validation of analytical methods in the nuclear field. In the future, the nuclear spent fuel reprocessing industry will require new standards and methods to comply with high content plutonium fuel and new extraction solvents. These standards and methods will have to be fully validated in order to ensure the quality of the analytical results obtained by the laboratories.In this context, a new ²⁴²Pu reference material, certified for its isotopic composition, has been recently produced. A novel statistical approach for data processing has been used and has led to a certified value of 0.985459 ± 0.000052 for the n(²⁴²Pu)/n(Pu) atomic ratio. In addition, an interlaboratory comparison has also been organized for the validation of a method for the analysis of DMDOHEMA, and its degradation products. This compound is considered as a new extractant candidate in the frame of separation processes for transmutation of long-lived radionuclides. The methodology and results obtained in both cases are presented.     

Reference trajectory tuning of model predictive control

An approach to minimize tuning effort of nominal Model Predictive Control algorithms is proposed. The algorithm dynamically calculates output set points to accommodate user-defined output importance, which is more intuitive than selecting values for the MPC weighing matrices. Instead of tuning the weights on the outputs deviations from their set points, weights on the input values and input increments, which are the usual tuning parameters of MPC, the desired output control performance of the MPC can be specified by performance factors. The proposed method extends the existing methods that consider a reference trajectory for the output tracking to the case of zone control and input targets. The proposed method also assumes that, as in most commercial MPC packages, the controller has two layers: a static layer and an extended dynamic layer. The method is illustrated by three case studies, contemplating both SISO and MIMO systems. It is observed that: the output set point tracking performance can be changed without modifying the MPC tuning weights, the approach is capable of achieving similar performance to conventional MPC tuned by multiobjective optimization techniques from the literature, with a fraction of computer effort, and it can be integrated with Real Time Optimization algorithms to control complex systems, always respecting output constraints.     

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ABSTRACT

When patron workstations are located far from the reference desk, service suffers because patrons can't easily contact staff. While in-house chat services offer a partial solution to this problem, these services fail to provide the face-to-face element that the literature shows is critical for effective reference service. This study analyzes NCSU Libraries' method for solving this problem, a hybrid service that combines features of in-person and virtual reference service.