Design of suction foundations

Suction foundations have been deployed in the last three decades in a growing number of offshore developments, for bottom-fixed and floating structures, in shallow and deep waters, many of them successfully. Suction foundations, traditionally used as anchors and jacket foundations in the oil and gas industry, are now also used in the offshore renewable (wind) industry, e.g. for monopods, tripods, and jackets. When technically feasible, suction foundations are often cheaper than pile foundations. Additionally, their installation is relatively noise-free and, by applying overpressure, they can be removed during decommissioning. This paper focuses on the more complex design issues and some pitfalls related to suction foundation design. Additionally design practices and recommendations for suction caisson design, including installation and extraction feasibility, foundation resistance, settlements and response in sand, clay and layered soil profiles, will be presented for basic understanding.     

阿拉伯国家高等教育的新进展

文章主要介绍了阿拉伯国家高等教育的最新进展，并就其未来发展应给予关注的问题做了初步探讨。     

单端反激式变换器的稳态及低频小信号特性研究

采用状态空间平均法建立了单端反激式开关电源的状态空间平均模型 ,并对其稳态及低频小信号特性进行了研究 ,可用于这类电源的稳定性分析     

Motivational predictors of young adolescents' participation in an outdoor adventure course: A self-determination theory approach

Abstract

Outdoor education is emerging as a compulsory component of the school curriculum in Singapore. As more and more young people are involved in outdoor education programmes, the motivational factors that influence students' participation in outdoor activities is an important area of study. The purpose of this study was to use the self-determination theory framework to examine post course satisfaction level among young adolescents. A total of 314 secondary school students aged from 12 to 16 years took part in the survey. Results showed that external regulation negatively predicted self-reported satisfaction whereas intrinsic motivation positively predicted participants' satisfaction levels of the course. It is highlighted that young adolescents should not be coerced into outdoor education programmes. They should be provided with a meaningful rationale for participation, given some autonomy for decision-making and to have a positive and enjoyable experience during the programme.     

引进国际职业标准升级传统会计专业的若干思考——以青岛职业技术学院中爱合作会计专业为例

作为直接服务于经济建设和社会发展的教育类型,高职教育必须与经济社会发展接轨,在人才培养理念、内容和标准上同步做出适应性的改革与升级。就传统会计专业而言,随着行业发展趋势和经济发展形势的要求,在人才培养的目标、规格定位和培养内容、方式等方面同样需要适应性的转型和升级。青岛职业技术学院采取以中外合作办学项目为平台,引入国际先进会计标准等优质教育资源升级改造传统会计专业课程体系和标准,实践证明,这是一条直接可行、经济有效的路径。     

从薄弱到优质——以大连市第71中学和西岗区大同小学转化经验为例

在大连市西岗区教育局"新优质学校"项目推进过程中,涌现出大连市71中学和大同小学两所典型学校。这两所学校实现由薄弱到优质的成功经验,对于薄弱学校又快又好发展,推进区域教育均衡发展,促进教育公平,具有启示和借鉴作用。     

弹目坐标变换和相对速度分析

弹目坐标变换、弹目相对速度是与无线引信设计密贴相关的问题。在定义的地面坐标系、弹体坐标系、目标坐标系和狭义相对论的基础上,给出了弹目坐标变换,讨论了经典的和相对论弹目相对速度。其讨论结果有实际应用价值。     

A Rationale for Public and School Library Cooperation in Sierra Leone

This article explores the need for public and school library cooperation in Sierra Leone. Establishing a library service to meet user needs and keeping it relevant is one of the important tasks of professional librarians. In Sierra Leone, however, an increase in enrollment in schools, decreasing library budgets, and the information explosion have had grave consequences in the management of libraries, be they special, school, or public. If public and school libraries are to provide satisfactory services to the nation's young, there is every need for the establishment of greater public and school library cooperation.     

The Use of Arabized Software Packages in Jordan University Libraries

This study reviews the higher education movement, and the development of Universities in Jordan. Academic libraries use of Arabized software packages (MINISIS and CDS/ISIS), rationale for selection, applications, services, problems, solutions, and future plans are surveyed. Types of hardware, staff, and material entries are discussed. The study samples included 20 libraries. All of 17 (85%) respondent libraries are computerized. Six (35·3%) use MINISIS, nine (52·9%) use CDS/ISIS, and two (11·8%) use customized packages. Systems are mostly employed in technical processing, reference services, bibliographies, and acquisitions. Adaptability to Arab libraries functions, handling of bi-lingual documents, and networking ability are the prime priority, inter alia , reasons for packages selection. Insufficient funds and equipment, and unskilled staff are the major hindrances which obstruct the full use of packages. This study stresses the need to develop packages conducive to meet particular Arab libraries demands, plans for manpower academic training, and the necessity for libraries linkage to networks.     

CuFeSb电子结构和磁性的第一性原理研究

利用基于密度泛函理论的第一性原理对层状铁磷族化合物CuFeSb的晶体结构、电子结构和磁性进行了研究.计算结果表明:不同于其他的铁基超导体,CuFeSb呈现金属性铁磁序.通过对Fe原子的d轨道进行深入分析,发现其d轨道的局域性相对减弱,巡游性增强.并发现其平面内Fe原子的相互作用较强,其金属性铁磁序与平面内Fe原子的相互作用增强有关.