中韩日国际会议城市的构建探析

会议产业,对城市经济发展、产业结构调整和城市资源的整合等,发挥了积极的拉动作用,成为许多国家经营城市的切入点,也成为世界了解城市的窗口、城市走向世界的桥梁.但中韩日三国在会议产业专业化、国际化,以及构建国际会议城市的水平上还比较低,鉴于未来的发展空间巨大,提出可行的完善提高的建议.     

Full predicate coverage for testing SQL database queries

In the field of database applications a considerable part of the business logic is implemented using a semi‐declarative language: the Structured Query Language (SQL). Because of the different semantics of SQL compared with other procedural languages, the conventional coverage criteria for testing are not directly applicable. This paper presents a criterion specifically tailored for SQL queries (SQLFpc). It is based on Masking Modified Condition Decision Coverage (MCDC) or Full Predicate Coverage and takes into account a wide range of the syntax and semantics of SQL, including selection, joining, grouping, aggregations, subqueries, case expressions and null values. The criterion assesses the coverage of the test data in relation to the query that is executed and it is expressed as a set of rules that are automatically generated and efficiently evaluated against a test database. The use of the criterion is illustrated in a case study, which includes complex queries. Copyright © 2010 John Wiley & Sons, Ltd.     

RETORCH: an approach for resource-aware orchestration of end-to-end test cases

Software Quality Journal - Continuous integration practice mandates to continuously introduce incremental changes into code, but doing so may introduce new faults too. These faults could be...     

基于深度神经网络的蒙古语声学模型建模研究

针对高斯混合模型在蒙古语语音识别声学建模中不能充分描述蒙古语声学特征之间相关性和独立性假设的问题,开展了使用深度神经网络模型进行蒙古语声学模型建模的研究。以深度神经网络为基础,将分类与语音特征内在结构的学习紧密结合进行蒙古语声学特征的提取,构建了DNN-HMM蒙古语声学模型,结合无监督预训练与监督训练调优过程设计了训练算法,在DNN-HMM蒙古语声学模型训练中加入dropout技术避免过拟合现象。最后,在小规模语料库和Kaldi实验平台下,对GMM-HMM和DNN-HMM蒙古语声学模型进行了对比实验。实验结果表明,DNN-HMM蒙古语声学模型的词识别错误率降低了7.5%,句识别错误率降低了13.63%;同时,训练时加入dropout技术可以有效避免DNN-HMM蒙古语声学模型的过拟合现象。     

基于嵌入式技术的风洞模拟测控系统设计

传统风洞模拟测控系统容易受到测试位置干扰,导致控制效果不佳,针对该问题,提出了基于嵌入式技术的风洞模拟测控系统设计;在系统硬件部分,根据IEEE1588标准,设计总线,在印刷电路板PCB上,确定布线层的层数,避免线路串扰;使用AT91 RM9200驱动模块控制开关,并在系统中嵌入测量仪器和执行机构;在系统软件流程设计过程中,通过嵌入模拟不同湍流特征脉动风场,结合PID算法,设置阈值并计算风洞模拟数据偏差值,通过调节积分控制风洞模拟测控系统的运行;由实验结果可知,该系统静风状态下,与实际情况最大误差为0.01 cm;吹风状态下,与实际距离横向最大相差0.01 cm,纵向相差0.01 cm,具有精准控制效果.     

联吡啶铁树脂相可见光光催化剂降解甲基紫性能的研究

采用将氮配位的联吡啶铁键合到商品树脂上的方法,制备联吡啶铁树脂相可见光仿生光催化剂。以太阳光作光源,以甲基紫溶液的脱色为模型反应,研究联吡啶铁树脂相可见光光催化剂的光催化脱色性能,考察了pH值、温度、光照、H2O2用量、催化剂投加量等因素对降解率的影响。     

Proximity Electronic Effect of Ni/Co Diatomic Sites for Synergistic Promotion of Electrocatalytic Oxygen Reduction and Hydrogen Evolution

The modulation effect manifests an encouraging potential to enhance the performance of single-atom catalysts; however, the in-depth study about this effect for the isolated diatomic sites (DASs) remains a great challenge. Herein, a proximity electronic effect (PEE) of Ni/Co DASs is proposed that is anchored in N-doped carbon (N-C) substrate (NiCo DASs/N-C) for synergistic promoting electrocatalytic oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER). Benefiting from the PEE of adjacent Ni anchored by four nitrogen (Ni-N₄) moiety, NiCo DASs/N-C catalyst exhibits superior ORR and HER activity. In situ characterization results suggest Co anchored by four nitrogen (Co-N₄) as main active site for O₂ adsorption-activation process, which promotes the formation of key *OOH and the desorption of *OH intermediate to accelerate the multielectron reaction kinetics. Theoretical calculation reveals the adjacent Ni-N₄ site as a modulator can effectively adjust the electronic localization of proximity Co-N₄ site, promoting the *OH desorption and *H adsorption on Co-N₄ site, thereby boosting ORR and HER process significantly. This study opens a new opportunity for rationally regulating the electronic localization of catalytic active centers by proximity single-atom moiety, as well as provides guidance for designing high-efficiency bifunctional electrocatalysts for promising applications.     

绿色游弋--张家港江帆花苑规划及住宅设计

近年来,随着人们环境保护意识的日益增强和对生活品质要求的不断提高,在选购住房的过程中,越来越多的人们开始强调一个新的选择尺度:景观环境.即住宅小区内及其周边的自然景观和人文景观是否丰富,是否有活力并且与生态环境协调.这种生态化的现代居住观给小区环境设计注入了新的内容,同时,也向小区环境设计提出了更高的要求,现今,居民的住房消费更趋于理性化和理想化,住宅区的绿化景观环境在人们的心中越来越占主导地位.     

合成氯化氢循环液槽爆裂事故教训

对内蒙古亿利化学工业有限公司烧碱分厂一次高纯盐酸循环槽爆炸事故进行分析,并介绍了由此进行的工艺改造情况。     

Testing in Service Oriented Architectures with dynamic binding: A mapping study

Context

Service Oriented Architectures (SOA) have emerged as a new paradigm to develop interoperable and highly dynamic applications.

Objective

This paper aims to identify the state of the art in the research on testing in Service Oriented Architectures with dynamic binding.

Method

A mapping study has been performed employing both manual and automatic search in journals, conference/workshop proceedings and electronic databases.

Results

A total of 33 studies have been reviewed in order to extract relevant information regarding a previously defined set of research questions. The detection of faults and the decision making based on the information gathered from the tests have been identified as the main objectives of these studies. To achieve these goals, monitoring and test case generation are the most proposed techniques testing both functional and non-functional properties. Furthermore, different stakeholders have been identified as participants in the tests, which are performed in specific points in time during the life cycle of the services. Finally, it has been observed that a relevant group of studies have not validated their approach yet.

Conclusions

Although we have only found 33 studies that address the testing of SOA where the discovery and binding of the services are performed at runtime, this number can be considered significant due to the specific nature of the reviewed topic. The results of this study have contributed to provide a body of knowledge that allows identifying current gaps in improving the quality of the dynamic binding in SOA using testing approaches.