基于变长Turbo码的低复杂度联合信源信道译码

基于变长Turbo码的联合信源信道译码通过构造联合译码平面网格图,具有比比特级译码更好的性能.但平面网格图复杂,使变长Turbo码译码复杂度高.基于此,构造了一个空间网格图,提出基于变长Turbo码的低复杂度联合信源信道译码方法.仿真结果表明,该算法比平面网格图计算复杂度减少约3.8%,在SER(symbol error ratio)为10-4时,获得Eb/N0增益约为0.2dB.     

语义场：论《如果在冬夜，一个旅人》的叙事代码

文章以卡尔维诺的小说《如果在冬夜,一个旅人》为研究文本,以佛克马的后现代主义理论为理论支撑,从语义场这一特定视角来论述小说后现代叙事代码的运用。通过存在于文本中的五个语义场——同化、加倍与排列、感觉、运动、机械化,探索卡尔维诺对小说形式创新所做的努力及其意义。     

环Zp＋uZp＋u^2Zp上自对偶码的个数（u^3=0,p为奇素数）

本文主要讨论了环Zp＋uZp＋u2Zp（u3=0,p为奇素数）上自对偶码,通过环Zp上的对偶码得出环Zp＋uZp＋u2Zp上自对偶码的个数。     

环Zp+uZp+u~2Zp上自对偶码的个数(u~3=0,p为奇素数)

本文主要讨论了环Zp+uZp+u2Zp(u3=0,p为奇素数)上自对偶码,通过环Zp上的对偶码得出环Zp+uZp+u2Zp上自对偶码的个数。     

201部首的名称及信息代码探讨

部首只能按笔画排序,不能全用拼音排序,这对信息处理带来一定难度。部首分为三大类：单字部首、非单字部首、笔画部首。确定部首名称和信息代码的原则：单字部首按该字的读音命名、非单字部首应符合语文教学的需要命名并在该部首名称中选择一代表字为信息代码、笔画部首按基本笔画的读音命名。     

Rethinking Mobile Delivery: Using Quick Response Codes to Access Information at the Point of Need

This article covers the use of Quick Response (QR) codes to provide instant mobile access to information, digital collections, educational offerings, library website, subject guides, text messages, videos, and library personnel. The array of uses and the value of using QR codes to push customized information to patrons are explained. A case is developed for using QR codes for mobile delivery of customized information to patrons. Applications in use at the Libraries of the University of Utah will be reviewed to provide readers with ideas for use in their library.     

Tracking the History of Romani Publications: Challenges Presented by Flawed Data

Romani is a language of northern Indic origin spoken natively by an estimated 2.5 million people, primarily in Eurasia but also in North America. The history of publication patterns in Romani has not been well documented. Extracting data about this history based on available information in large bibliographic databases such as OCLC WorldCat has been hampered by unfortunate misapplication of certain language codes, making it all but impossible to filter search results efficiently using Romani language as a parameter. The author discusses how he was able to correct much of this inaccurate data in OCLC WorldCat.     

Writing for Publication and the Role of the Library: “Do Have a Cow,Man!” (“Don't Have a Cow,Man”-Bart Simpson)

The aim of this small-scale research project was to identify the main concerns of editors, academics, researchers, and librarians involved in the writing for publication (WfP) process. This would provide library and information services (LIS) staff with a clearer understanding of the process to enable them to articulate and develop their own role in supporting this activity. A novel “one thing” approach was used to determine the perspectives of editors, researchers, librarians, and research students on key issues surrounding WfP. The results indicate that there are many opportunities for LIS staff to contribute to the WfP process. One major concern which emerged was just how isolated researchers could feel. Suggestion: Having a CoW (Community of Writers) in the library could provide a potential LIS role. Another best practice to support WfP is also identified.     

Investigation of low-cycle fatigue behavior of austenitic stainless steel for cold-stretched pressure vessels

Cold-stretched pressure vessels from austenitic stainless steels(ASS) are widely used for storage and transportation of liquefied gases,and have such advantages as thin wall and light weight.Fatigue is an important concern in these pressure vessels,which are subjected to alternative loads.Even though several codes and standards have guidelines on these pressure vessels,there are no relevant design methods on fatigue failure.To understand the fatigue properties of ASS 1.4301(equivalents include UNS S30400 and AISI 304) in solution-annealed(SA) and cold-stretched conditions(9% strain level) and the response of fatigue properties to cold stretching(CS),low-cycle fatigue(LCF) tests were performed at room temperature,with total strain amplitudes ranging from -.4% to -.8%.Martensite transformations were measured during the tests.Comparisons on cyclic stress response,cyclic stress-strain behavior,and fatigue life were carried out between SA and CS materials.Results show that CS reduces the initial hardening stage,but prolongs the softening period in the cyclic stress response.Martensite transformation helps form a stable regime and subsequent secondary hardening.The stresses of monotonic and cyclic stress-strain curves are improved by CS,which leads to a lower plastic strain and a much higher elastic strain.The fatigue resistance of the CS material is better than that of the SA material,which is approximately 1?03 to 2?04 cycles.The S-N curve of the ASME standard for ASS is compared with the fatigue data and is justified to be suitable for the fatigue design of cold-stretched pressure vessels.However,considering the CS material has a better fatigue resistance,the S-N curve will be more conservative.The present study would be helpful in making full use of the advantages of CS to develop a new S-N curve for fatigue design of cold-stretched pressure vessels.