思澜二级公路改建工程石拱桥加固利用

公路改建工程主要依托老路进行,旧桥加固利用是公路改建工程中重要的环节,对降低工程造价、缩短施工周期、缓解施工中的保通压力有其现实意义,针对思澜公路石拱桥加固利用,对老石拱桥加固技术和经济效益进行探讨。     

基于CMS的开放式资源库系统设计与实现

为解决资源冗余和难以管理问题，提出使用内容管理系统(CMS) 构建开放式资源库系统的解决方案。阐述内容管理体系结构，运用内容管理的理论和相关技术，并结合采用J2EE 技术构建一个基于内容管理的资源库系统。重点介绍权限管理、文件的上传与下载、资源发布管理这3 大关键技术模块的设计与实现。解决技术与内容的瓶颈、开发维护角色分工、系统统一管理等问题。     

广西东门林场森林资源现状和可持续发展策略

根据广西东门林场2009年森林资源二类调查的结果,分析东门林场森林资源现状、特点及存在的问题,并提出东门林场森林资源可持续发展的策略。     

浅议如何提高高校图书馆数据库利用率

当前各高校图书馆数据库的数量与日俱增．在数据库数量不断增加的同时．情况，发现并不是每个数据库的利用率都很理想，有不少数据库的利用率还一定的浪费。以贵州大学图书馆为例．通过研究贵州大学图书馆数据库的利利用率低的原因，并提出提高高校图书馆数据库利用率的一些措施和建议、，各高校开始关注数据库的使用比较低．对学校的投入造成了用现状．具体分析导致数据库     

郏县文庙片区更新中历史文化资源的保护与利用

对河南郏县文庙片区的环境背景进行了分析,立足于其核心历史价值,对片区进行了详细规划设计。将片区的核心历史文化特色通过设计,在建筑、景观等层面表达出来,在保护古建筑的同时,借其核心优势,驱动整个片区的经济,并将部分收益返回来用于保护历史遗迹。通过案例的解析来阐明历史文化资源的有效保护利用手段。     

Influence of amount and frequency of protein supplementation to ruminants consuming low-quality cool-season forages: efficiency of nitrogen utilization in lambs and performance of gestating beef cows

We evaluated the influence of amount and crude protein (CP) supplementation frequency (SF) on nitrogen (N) use by wethers and the performance of late-gestation beef cows. In exp. 1, seven Western whiteface wethers (31.8 ± 1.4 kg) were used in an incomplete 7 × 4 Latin square to evaluate intake and N use. Wethers received one of the seven treatments in a 2 × 3 factorial design containing two levels of supplemental soybean meal offered at a rate of 100% (F) or 50% (H; 50% of F) of the estimated CP requirement daily, once every 5, or once every 10 d, plus a non-supplemented control (CON). Low-quality cool-season forage (4.9 % CP; dry matter [DM] basis) was provided daily for ad libitum intake. Experimental periods lasted 30 d. In exp. 2, 84 Angus × Hereford cows (560 ± 35 kg) were stratified by age, body condition score (BCS), and expected calving date and allocated to 1 of the 21 feedlot pens (three pens per treatment). Pens were randomly assigned to receive the same treatments as in exp. 1 and cows had free access to low-quality cool-season forage (2.9% CP; DM basis). Cow body weight (BW) and BCS were measured every 14 d until calving and within 24 h after calving. In exp. 1, supplementation did not alter total DM and organic matter (OM) intake (P ≥ 0.26), but both parameters linearly decreased as SF decreased (P = 0.02). Supplementation increased DM, OM, and neutral detergent fiber (NDF) digestibility (P ≤ 0.02). Additionally, F feeding linearly increased DM, OM, and NDF digestibility as SF decreased (P ≤ 0.04). Digestibility of N, N balance, and digested N retained were greater with supplementation (P < 0.01), and N digestibility linearly increased as SF decreased (P = 0.01). Mean plasma urea-N concentration was not only greater (P < 0.01) for supplemented vs. CON wethers but also greater (P = 0.03) for F vs. H. In exp. 2, pre-calving BCS change was greater (P = 0.03) for supplemented cows. A linear effect of SF × supplementation rate for pre-calving BCS change was noted (P = 0.05), as F-supplemented cows lost more BCS compared with H as SF decreased. When considering supplementation intervals greater than 5 d, reducing the quantity of supplement provided, compared with daily supplementation, may be a feasible management strategy to maintain acceptable nutrient use and animal performance while reducing supplement and labor costs.     

长株潭城市群土地利用变化现状及策略分析

文章通过对长株潭城市群土地利用现状剖析,结合相关的理论提出相应的策略：以循环经济理念指导土地利用,优化土地利用结构与布局。     

国家种质多年生牧草圃资源整理整合及共享

简要介绍了国家多年生牧草圃概况及资源保存状况,阐述了多年生牧草圃资源整理、整合及数字化表达现状,提出了资源共享利用的框架;指出了在牧草资源整理整合中存在的问题及对策.     

A Study on the Method of Time-Resource Optimization of Engineering Projects

This paper investigates the coordinated operation of the progress planning with the resource planning when carrying out engineering projects and puts forward a method of "RSM" under the resource limit conditions. Then, the "RSM" was improved to avoid complicated calculation. This method not only reduces the calculating work by hand but saves computer's memory as well, making the time-resource optimization work more quick and convenient.     

Resource Management in Application System

Application system generally refers to all kinds of computer information system. It aims at improving the sharing and application of the resource. The resource in application system usually means data resource. For computer management and maintenance, there are not only data resource, but also program resource and network resource. Effective management of this resource is key to ensure proper work of the application system. In this paper, the basic pattern and policy for resource management is put forward and a method to build and realize the resource layer that lies between database layer and application layer is to be found. This management layer, which skillfully connects the application system with resource and establishes good base for application and exploitation of system, is named as resource management system.