图书馆软件发展趋向概论

近几年来,图书馆界涌现出了一大批比较适用的软件,这些软件对于图书馆的现代化起到了巨大的促进作用。但是,随着图书馆事业的发展,图书馆界对软件设计提出了更高的要求。文章从六个方面描述了新一代图书馆软件的发展方向。。     

技术中心科技图书馆新辟电子阅览室服务

为了改善科技图书馆的学习和阅览环境，技术中心科技图书馆进行了改造，改造后的图书馆焕然一新，宽敞明亮，整洁高雅，富有文化气息和时代感，无论是硬件还是软件环境都大为改观。尤其是增设了集电子型文献信息咨询、阅览、服务等为一体，以计算机技术、远程通信技术和网络技术为依托的电子阅览室。     

基于XOOPS的农业科技档案网站建设研究

在分析传统农业科技档案网站主要内容的基础上,使用开源软件XOOPS进行了档案网站的构建,并以组件的方式引入了Web2.0的应用,为其他相关网站的建设提供了参考.     

Linux技术在新钢公司办公自动化系统中的开发应用

Linux系统具有安全性、稳定性,特别是软件开源等方面的优点。介绍了Linux的技术优势及Linux技术在新钢公司办公自动化(OA)系统中成功开发应用的情况和效果,值得大中型企业借鉴。     

ILAS5．0系统下Telix仿真软件的使用

在图书馆自动化集成管理系统ILAS5．0下，使用Telix仿真终端软件，将386微机仿真成中英文汉显终端，从而替代部分智能终端，实现软件仿真的调试过程及性能评价。     

数据中心超融合系统架构应用研究

数据中心架构体系逐步演化,已达到系统超融合的阶段,实现了计算、网络、存储和服务器虚拟化等资源和技术的整合。本文重点对超融合系统架构的演进过程进行分析,并结合工作经验总结出基于纯开源软件的超融合架构设计。     

读者满意度统计分析软件设计与实现

应用VFP语言设计并实现了图书馆读者满意度统计分析软件 .利用该软件可动态掌握读者对图书馆工作的满意程度 ,对改善图书馆各部门的服务态度、提高服务质量有一定作用 .     

基于分布式文件系统的开源云存储的技术研究

详细分析了开源云存储分布式文件系统的技术原理和性能优势,提出了基于MFS分布式文件系统架构实现开源云存储的方法。充分利用现有低端硬件设备的处理能力,利用MFS分布式文件系统的可扩展性、高容错性、高性价比,对开源云存储架构进行学习、改造,形成了基于keepalived+drbd+mfs的开源云存储架构。有效解决了主节点单点故障及磁盘故障率高的问题,逐步形成数据中心开源云存储平台。     

利用Moodle搭建的高校网络课程平台的研究

针对目前高校网络课程平台多为商业软件的现状,提出利用开源软件Moodle搭建课程平台.本文分析了Moodle搭建网络课程平台的优势,并从教学资源共享、在线专题讨论、无纸化作业布置和批改、在线测试、过程记录和多元化评价五大环节具体阐述了Moodle平台在课程教学中的应用.     

中国铝资源性产品供需状况与政策选择探讨

分析了我国铝资源性产品的供需状况，指出：铝资源性产品的供应已经处于高度紧张状态，必须广泛开源来满足国内的消费需求，并探讨了与之相关的政策选择。     

氧气合理利用决策支持系统和空分装置操作仿真系统

分析了钢铁企业空分系统能源管理的特点 ,并开发出降低空分能耗的应用软件 :氧气合理利用决策支持系统和空分装置操作仿真系统。前者可为决策者提供全面的辅助决策信息和决策支持以降低氧气放散 ,实现氧气的合理利用 ;后者既可实现空分装置运行操作的仿真 ,也可实现空分装置的仿真实验和仿真操作 ,为实施空分装置的节能优化运行提供技术支持     

Rehabilitation of Cracked Aluminum Connections with GFRP Composites for Fatigue Stresses

The original design of existing aluminum overhead sign structures (OSS) did not consider fatigue as a limit state. Cracks propagate in the welds of the connection between the main chord and branches of OSS due to fatigue stresses caused by wind-induced vibration, which occasionally lead to complete fracture of the welds. A rehabilitation method for cracked aluminum welded connections using glass fiber-reinforced Polymer (GFRP) composites is investigated for its effectiveness under fatigue stresses. The results of constant amplitude fatigue tests for three types of aluminum connections from actual OSS are presented: (1) connections with no known cracks; (2) cracked connections rehabilitated with GFRP composites; and (3) connections with 90% of the weld removed and subsequently repaired with GFRP composites. The fatigue limits of the three connection types are established for four stress ranges including the constant amplitude fatigue limit threshold. The rehabilitated connections from OSS exceeded the fatigue limit of the aluminum welded connections with no known cracks. The repaired connections with 90% of the weld removed satisfied the constant amplitude fatigue limit threshold. A cumulative damage index is established which leads to a fatigue reduction factor for the rehabilitation design of cracked aluminum connections using the GFRP composites.     

Ordered shotgun sequencing of a 135 kb Xq25 YAC containing ANT2 and four possible genes, including three confirmed by EST matches

Ordered shotgun sequencing (OSS) has been successfully carried out with an Xq25 YAC substrate. yWXD703 DNA was subcloned into lambda phage and sequences of insert ends of the lambda subclones were used to generate a map to select a minimum tiling path of clones to be completely sequenced. The sequence of 135 038 nt contains the entire ANT2 cDNA as well as four other candidates suggested by computer-assisted analyses. One of the putative genes is homologous to a gene implicated in Graves' disease and it, ANT2 and two others are confirmed by EST matches. The results suggest that OSS can be applied to YACs in accord with earlier simulations and further indicate that the sequence of the YAC accurately reflects the sequence of uncloned human DNA.     

The metabolic response to operative stress in infants

The aim of this study was to characterize energy metabolism and substrate utilization in infants following an operation. Nineteen infants (weight 3.2 +/- 0.2 kg) who had an operation were studied. Anesthesia was standardized and operative stress score (OSS) was recorded. Five infants had a minor operation (OSS < 7), and 14 infants had a major operation (OSS > or = 7). Energy and nitrogen intake were constant during the 48-hour study period. Respiratory gas exchange was measured by indirect calorimetry preoperatively, and postoperatively for the first 12 hours continuously and at 24 hours, 48 hours, and 5 days. Urinary nitrogen excretion rate was measured for the first 48 hours following the operation. Physical activity was scored. Resting energy expenditure (REE) and nonprotein respiratory quotient (NPRQ) were calculated. REE increased postoperatively, peaking at 2 to 4 hours, and returned to baseline levels by 12 to 24 hours. Peak REE was significantly higher than baseline REE (P < .001). Substrate utilization was not altered by operation. The increase in REE was significantly greater in infants having a major operation than in infants having a minor operation (P < .05). Among infants having a major operation, the increase in REE was significantly greater in those infants more than 48 hours old, than in those infants less than 48 hours old (P < .05).(ABSTRACT TRUNCATED AT 250 WORDS)     

Departmental libraries: why do they exist?

In response to an increasing concern on the part of the library staff over the role of the departmental libraries at The Milton S. Hershey Medical Center of The Pennsylvania State University, a questionnaire was developed by the George T. Harrel Library and sent to departmental libraries. From the analyzed responses, the authors were able to define the role of departmental libraries in a medical school/hospital situation, to analyze the Hershey Medical Center situation in an objective manner, to outline areas of possible cooperation between the main and departmental libraries, and to delineate some trends which appear to result from inadequate finding of a central library. Overall, the library found that departmental libraries at Hershey are currently maintaining collections consistent with the functional role of a departmental library.     

5 cases of acute gastritis with remarkable changes in x-ray pictures

An examination is made of the uses of diversity in medical library activities and personnel. This concept is extended also to the broader field of librarianship and to some forecasts of future directions for medical libraries.     

Vasopressin-induction of the immediate early gene, NGFI-A, in cultured hippocampal glial cells

A survey of dust samples from dwellings, hospitals and some public utilities (libraries, institutes) in several Upper Silesian towns was undertaken to determine the prevalence, number and species of mites. Total seasonal dynamics of dust mite species of the family Pyroglyphidae in dust from beds, floors/carpets and upholstery furniture in dwellings was analysed. Over a 4-years period, 402 dust samples were studied: 238 samples from dwellings, 122 samples from hospitals, 14 from libraries and 28 from institutes. Mites were present in 51.3%, 50.0%, 21.3% and 17.9% of dust samples from dwellings, libraries, hospitals and institutes, respectively. Generally, they were found in 160 samples (39.8%) out of 402 examined. The majority of mites (96.0%) were found in samples from the dwellings, especially in dust from upholstery furniture, couches, sofas and beds. More than 30 mite species were found of which the most abundant and common were pyroglyphids, especially Dermatophagoides pteronyssinus and D. farinae. The pyroglyphid mites constituted 89.2%, 78.9% and 57.5% of a total count of mites collected from dwellings, libraries and hospitals, respectively, and were not found in institutes. D. pteronyssinus was the dominant, especially in libraries and hospitals, however, in dwellings D. farinae was more abundant per 1 gram of dust as the former species. Another pyroglyphid mite, Euroglyphus maynei, occurred in very small numbers. The highest mite densities per gram of dust were noted in dwellings and libraries. A mean number of mites per 1 gram of dust from dwellings was 73.7 +/- 182.9 (range 1.0 - 1560.0), whereas mean values of indoor relative humidity and temperature were 64.5% RH and 22.7 degrees C, respectively. The low mean indoor relative humidity of ambient air, resulted in the relatively low mite frequency (only about 51.3% of samples were positive for mites) and density detected in the dwellings.     

Generation of cDNA expression libraries enriched for in-frame sequences

Bacterial cDNA expression libraries are made to reproduce protein sequences present in the mRNA source tissue. However, there is no control over which frame of the cDNA is translated, because translation of the cDNA must be initiated on vector sequence. In a library of nondirectionally cloned cDNAs, only some 8% of the protein sequences produced are expected to be correct. Directional cloning can increase this by a factor of two, but it does not solve the frame problem. We have therefore developed and tested a library construction methodology using a novel vector, pKE-1, with which translation in the correct reading frame confers kanamycin resistance on the host. Following kanamycin selection, the cDNA libraries contained 60-80% open, in-frame clones. These, compared with unselected libraries, showed a 10-fold increase in the number of matches between the cDNA-encoded proteins made by the bacteria and database protein sequences. cDNA sequencing programs will benefit from the enrichment for correct coding sequences, and screening methods requiring protein expression will benefit from the enrichment for authentic translation products.     

企业图书馆科技文献的利用率

文章介绍了企业图书馆的工作变化和现状，这些变化大大提高了企业科技文献的利用率。此外，以冶金企业图书馆为例，阐述了其管理工作应考虑的问题。     

Imidazo[1,5-b]pyridazine-d4T conjugates: synthesis and anti-human immunodeficiency virus evaluation

Various techniques for generation of peptide and peptidomimetic libraries are summarized in this article. Multipin, tea bag, and split-couple-mix techniques represent the major methods used to make peptides and peptidomimetics libraries. The synthesis of these libraries were made in either discrete or mixture format. Peptides and peptidomimetics combinatorial libraries were screened to discover leads against a variety of targets. These targets, including bacteria, fungus, virus, receptors, and enzymes were used in the screening of the libraries. Discovered leads can be further optimized by combinatorial approaches.