Web service based spatial forest information system using an open source software approach

For technical and other reasons there is a dilemma that data providers cannot find an appropriate way to redistribute spatial forest data and data users who need spatial data cannot access and integrate available forest resources information. To overcome this dilemma, this paper proposed a spatial forest information system based on Web service using an open source software approach. With Web service based architecture, the system can enable interoperability, integrate Web services from other application servers, reuse codes, and shorten the development time and cost. At the same time, it is possible to extend the local system to a regional or national spatial forest information system. The growth of Open Source Software （OSS） provides an alternative choice to proprietary software for operating systems, web servers, Web-based GIS applications and database management systems. Using open source software to develop spatial forest information systems can greatly reduce the cost while providing high performance and sharing spatial forest information. We chose open source software to build a prototype system for Xixia County, Henan Province, China. By integrating OSS packages Deegree and UMN MapServer which are compliant to the OGC open specifications, the prototype system enables users to access spatial forest information and travelling information of Xixia County which come from two different data servers via a standard Web browser and promotes spatial forest information sharing.

Web Based GIS for Tourism Development Using Effective Free and Open Source Software Case Study: Gondor Town and Its Surrounding Area, Ethiopia

Tourism in developing countries are some means of solving their economic problems and improving live standards of people and creates job opportunity for the host people in getting additional income and improve the developments of the country. The result of tourism in terms of environmental, cultural, economic and social aspects has a greater effect for Ethiopia. Gondar, the center of Ethiopian art and culture, is famous in its many Imperial castles and the design and decoration of its churches. This land of castles and churches was founded by Emperor Fasiladas in 1930s and served as tourist attraction sites all over the world. The main challenge to attract international tourists in the study area is Scarce and insufficient promotion of the tourist attraction sites, Lack of broad information based on the internet about tourism information, and lack of organized information about tourism facilities & destinations. This study tries to identify tourist attraction elements of Gondor town and its surrounding area & to identify non spatial data’s essential for touristic activities to develop & propose a web based GIS portal for the improvement of tourism activity in the town. The main target of developing a web based GIS interactive map is to promote and improve tourism industry of the area. It has been produced using free and open source software’s for fast processing, displaying, sharing, and distribution of tourism information using world wide web. For the web services PHP, HTML script language and QGIS2leaflet plugins are used in the development of web GIS portal.

Can Crossref Citations Replace Web of Science for Research Evaluation?The Share of Open Citations

Purpose:We study the proportion of Web of Science(WoS)citation links that are represented in the Crossref Open Citation Index(COCI),with the possible aim of using COCI in research evaluation instead of the WoS,if the level of coverage was sufficient.Design/methodology/approach:We calculate the proportion on citation links where both publications have a WoS accession number and a DOI simultaneously,and where the cited publications have had at least one author from our institution,the Czech Technical University in Prague.We attempt to look up each such citation link in COCI.Findings:We find that 53.7%of WoS citation links are present in the COCI.The proportion varies largely by discipline.The total figures differ significantly from 40%in the large-scale study by Van Eck,Waltman,Larivière,and Sugimoto(blog 2018,https://www.cwts.nl/blog?article=n-r2s234).Research limitations:The sample does not cover all science areas uniformly;it is heavily focused on Engineering and Technology,and only some disciplines of Natural Sciences are present.However,this reflects the real scientific orientation and publication profile of our institution.Practical implications:The current level of coverage is not sufficient for the WoS to be replaced by COCI for research evaluation.Originality/value:The present study illustrates a COCI vs WoS comparison on the scale of a larger technical university in Central Europe.

Finite Element Modelling of Steel Beams with Web Openings

Height limitations are not uncommon in multi-storey buildings due to economic requirements and esthetical considerations. Substantial spaces are normally required to enable the passage of large pipes and ducts beneath steel beams leading to uneconomic floor heights. The most adopted solution for this issue is the use of steel beam web openings to provide the required space for services. These openings could lead to a significant decrease of the beam load carrying capacity depending on the adopted openings shape, size and location. These aspects motivated the present study based on FE simulations calibrated against numerical and test results. The results accuracy enabled a comprehensive parametric analysis of beams with web openings to be made focused on the profile size, web opening location, among others. The study also investigated the efficiency of longitudinal stiffeners welded at the opening region and benefits of using an adequate edge concordance radius in beams with rectangular and square openings. The obtained results showed the need of using welded longitudinal stiffeners in order to increase the beams ultimate load carrying capacity. This adoption can double or even triple the ultimate load of beams with rectangular and square opening heights equal to 0.75 H, respectively.

Parametric Study on Composite Beams with Web Openings Fire Protected with Reactive Intumescent Coating

When service ducts and cables are required to pass through the structural beams,it is a common practical solution to use composite beams with rectangular or circular openings.The fire safety standards in many countries have recommended design methods for composite beams without openings,while the design method for composite beams with web openings is not addressed yet.Due to the complicated distribution of temperature and stress around the openings in the web of the steel beam,extra complexity has been introduced in determination of the structural capability of the beam and the failure mode in fire.These failure modes generally occur at lower limiting temperatures than the solid beam with same size.It is recognized that the thickness of a reactive coating required to provide a given fire resistance to a composite beam with web openings is affected by the beam’s web thickness,opening configuration,the degree of the beam asymmetry and the structural utilization factor,as well as the nature of the proprietary fire protection itself.Therefore it is necessary that such beams are structurally evaluated taking into account all possible modes of structural failure under both ambient and fire conditions.It is also necessary for additional thermal data to be measured around the web openings and on the web posts from fire tests.The additional thermal data will be used in conjunction with a structural model to determine limiting temperatures of beams with web openings.Steel Construction Institute(SCI)has produced a structural analysis model referenced as report RT1356,which divides a composite beam with web openings into different stress blocks,and then analyses the global bending,vertical shear,local Vierendeel bending,web-post buckling etc.The Association for Specialist Fire Protection(ASFP)recommended the test protocol in the Yellow Book,to determine the temperature distribution around the openings and web post.This paper will discuss a series of fire tests having been carried out in the laboratory of EXOVA Warringtonfire to establish temperature distribution in composite beams with web openings.Test result shows that the distribution of temperature is product specific and strongly affected by opening configuration and opening distance.EXOVA Warringtonfire has also developed a sophisticated calculator,ThermCalc,for analyzing temperature and structural following the method presented in RT1356.Using ThermCalc,parametric study has been carried out,and the effect of load utilization factor,opening size,opening distance,slab depth,decking configuration etc.was investigated.

Static and Dynamic Analysis Web Opening of Steel Beams

According to the purpose of the opening and the structural designer, the shape of the web opening is decided. It is too easy to choose the shape of openings from regular shape whether it is circular or rectangular shape. The presence of openings in the web of steel beams decreases stiffness of the beam and introducing a larger deflection than in the steel web opening with solid opening. A steel beam with web opening is analyzed in this paper. ABAQUS software is using for analyzing nonlinear static and dynamic opening of steel beam with different position and supporting conditions.

Use of Open Source Software for the Development of Web GIS for Accessibility to Tourist Attractions

Based on the concepts of social inclusion, universal design and accessibility, this paper aims to describe the stages of the development and implementation of a Web GIS （geographic information system for the internet） based on OS （open source） software The Web GIS developed is called ＂accessibility to Campinas tourist attractions＂, which provides information about cultural and natural attractions in Campinas/SP-Brazil, especially for people with disabilities or reduced mobility that prevents access these sites via public and private transportation. The verification of the existence or lack of accessibility equipment at bus stops and parking areas close to tourist attractions relies on current legislation （NBR 9050/1994） that establishes the right to accessibility for disabled people to transportation, local culture and leisure. An application that facilitates this recognition with low operating costs and high performance was developed using the OS software Quantum GIS 1.0.2, Apache 2.2.4, Mapserver 5.0.2, I3GEO 4.0, PostgreSQL 8.3 and PostGIS 1.3.5. This software is able to integrate the management of tourist areas and the advertisement of tourist information regarding accessibility devices at sights recognized as tourist attractions by Campinas city hall.

Effect of Web Opening on Buckling Instability of Simply Supported Steel I-Beam

The lateral torsional buckling phenomenon often governs design of steel I-beams. Although web opening is often used to accommodate the required mechanical and piping works in buildings, its effect on the buckling instability is not considered in the design codes. In this paper, the effect of web opening on both lateral torsional buckling and local buckling behaviors has been investigated. A simply supported steel I-beam has been studied under uniform bending moment around the major axis. Buckling analysis has been performed using the finite element method. Linear regression analysis has been conducted for output data to formulate an equation for the critical moment including web opening effect. The results have shown a limited reduction in the lateral torsional buckling capacity and a significant reduction in the local buckling capacity.

Structural Performance of Prefabricated Timber-Concrete Composite Floor Constructed Using Open Web Truss Joist Made of LVL Paraserianthes Falctaria

This paper investigates an open web truss joist (OWTJ) made of laminated veneer lumber (LVL) Paraserianthes falctaria as a prefabricated timber-concrete composite floor system. The four-point bending test showed that structural performances of the OWTJ, conventional composite floor (CCF), and prefabricated composite floor (PCF) were similar. Although composite action was not developed as no lateral deformation was observed at the shear connectors, installing a concrete slab above the OWTJ can slightly increase the ductility factor of the composite floor. Furthermore, a finite element model was developed, and the model proved to be suitable for simulating the structural performance of the composite floor.

Mapping Spatial Data on the Web Using Free and Open-Source Tools: A Prototype Implementation

There is a growing need for web-based geographic information systems for easy and fast dissemination, sharing, displaying and processing of spatial information. The tremendous growth in the use of web and open-source geospatial resources has sparked development of web-based spatial applications to address multidisciplinary issues with spatial dimensions. This paper presents the integration of open-source geospatial tools and web technology to visualize and interact with spatial data using web browser. The goal of this paper is to implement a prototype system for web-based mapping by providing step-by-step instructions in order to encourage the eager developers and interested readers to publish their maps on the web with no prior technical experience in map servers. The implementation of mapping prototype shows the utilization of open-source geospatial tools which results in a rapid implementation with minimal or no software input cost.

Building a Web-based EFL Course with Open Source CMS in Vocational Colleges

Aiming to solve the existing problems with the Quality Course,an EFL online course is developed with an Open Source Course Management System(CMS).The principles and strategies of designing and constructing the course are discussed.The process of developing vocational college students'professional and social competence in the web-based environment is ex plored.Research results show the students are satisfied with the web-based EFL course and the teaching.

装配式双拼槽钢-混凝土开孔组合梁试验研究

装配式建筑行业渗透率不断提升,针对装配式工业化的需求,提出了一种新型装配式双拼槽钢-混凝土开孔组合梁(DCCP),由高强螺栓连接装配模块形成,实现完全干式连接,兼具节省钢材、便于敷设管道及增大建筑使用空间等优点.对具有腹板圆形开孔的DCCP和4根不同腹板圆角矩形开孔长度的DCCP进行了静力弯曲试验,探究了腹板开孔长度对组合梁受弯性能的影响,分析了试验梁的破坏模式,跨中挠度、应变、平面外位移、界面滑移随荷载变化规律,提出了DCCP极限承载力的理论计算模型.结果表明:腹板开孔长度对组合梁的力学性能有显著的影响,腹板开圆孔的组合梁表现为槽钢翼缘屈服失效,混凝土板在跨中压碎即弯曲破坏,而腹板开长圆角矩形孔的组合梁因腹板开孔处四角产生塑性铰和开孔处高弯矩端对应位置的混凝土板压溃而发生空腹破坏(Vierendeel mechanism failure);腹板开孔长度由150 mm增加到900 mm时,组合梁的承载力和延性分别降低了20%和23%;具有腹板开孔的DCCP平均延性系数值为8;高强螺栓约束下的装配模块间分离微乎其微,整体协同工作性能良好.钢梁与混凝土板间最大滑移为0.34 mm,新型组合梁采用的钢板连接件可有效传递钢梁和混凝土板间的纵向剪力,实现完全抗剪连接件.用本文理论模型计算的极限承载力与试验结果吻合良好,误差小于5%.

均布荷载下腹板开孔钢梁的受弯性能研究

为研究腹板开孔钢梁的性能,文中通过建立有限元模型,分析了开孔尺寸、开孔位置和开孔数量对钢梁挠度的影响。基于Timoshenko梁挠度理论和T/CECS951—2021《隐式钢管混凝土结构技术规程》开孔梁挠度增量计算公式,给出了刚度折减系数计算方法。在弹性分析的基础上,对腹板开孔钢梁的弹塑性抗弯承载力进行分析,考虑了开孔位置、开孔数量和腹板高宽比的影响,并对比分析了实腹梁、腹板开孔梁、单面水平加劲、单面水平加劲和背面竖向贯通加劲、双面水平加劲、双面水平加劲和单侧竖向加劲一共6种情况。发现水平加劲肋对于开孔截面的抗弯承载能力具有明显的提高作用,但是当腹板高厚比较大时,设置横向加劲肋有助于提高腹板的稳定性。基于分析结果,最终给出了实用的洞口补强构造设计建议。

甘溪特大桥空腹三角区施工阶段受力分析

甘溪特大桥是主跨300 m的空腹式连续刚构桥,空腹三角区上弦箱梁采用可伸缩部分立柱后支配合挂篮悬浇,下弦箱梁采用全斜拉扣挂法配合挂篮悬浇。为分析采用该施工方法在三角区临时结构体系中的受力特性,总结三角区临时结构体系施工过程中受力变化规律,验证施工方法的有效性,并提出临时扣索和支撑立柱的最佳解除时机,采用有限元结构分析软件模拟全桥施工过程。结果表明:采用该工法施工,结构受力满足规范要求。三角区施工过程中,已施工的上、下弦箱梁以受压为主,受下一节段混凝土浇筑、立柱支顶、扣索张拉等工序影响,其间会出现短暂轻微受拉状态。三角区合龙完成时,箱梁截面以受压为主,局部存在轻微受拉。全桥合龙后三角区箱梁为全受压状态,较三角区合龙状态压应力增加明显。临时扣索、立柱拆除后,上、下弦箱梁出现了明显的应力重分布,但仍为全受压状态。临时扣索索力峰值均出现在三角区合龙完成前,三角区合龙后总体呈下降趋势,临近拆除前有所回升。后方临时立柱在施工过程中支撑力总体呈下降趋势,前方立柱呈上升趋势,临近拆除前立柱支撑力增幅均较大。经比选,推荐全桥合龙后先拆立柱、再拆扣索。

基于WEB的实验室开放预约管理系统的设计和实践

实验室开放已成为信息化时代高校实验教学改革的重要内容.采用B/S体系架构,设计并实现基于WEB和SQL网络数据库技术的实验室开放预约管理系统,将实验室的开放管理水平和服务水平推上了一个新的台阶.

基于Open Core技术的远程监控系统

介绍了一种基于Open Core技术的远程监控系统的设计方案,阐述了该系统的结构组成,分析了其中所采用的关键技术,包括Open Core技术和Ajax技术。通过Open Core技术解决了监控上位机与下位机可编程逻辑控制器(Programmable Logic Controller,PLC)之间的通信,并使用Ajax技术实现监控数据的实时动态更新。在此基础上,利用ASP.NET技术、C#编程语言等设计并开发了系统的各个功能模块,实现了针对一套自动化生产线原型系统的实时远程监控。现场运行结果表明,该系统具有操作简单、实时准确以及安全可靠等特点。

基于Web服务的开放式ERP系统设计与开发

针对企业中不同平台的异构资源集成问题,给出了一个基于Web服务的ERP系统设计和开发实例,论述了系统设计和开发过程,说明了其SOAP协议的实现过程。系统主要采用Web服务技术解决移动计算在制造企业的应用时引起的异构平台间系统集成问题。系统对企业中的Legacy系统实现很好的集成,使制造企业中的ERP系统具有适用于多平台的开放式结构。

基于Web的实验室开放管理系统的设计与实现

针对目前高校实验室开放管理信息化程度不高的缺点,设计并实现了一个基于Web的实验室开放管理系统。该系统采用MySQL+PHP进行开发,实现了实验课排课、实验室设备使用状态查询和预约等功能,并通过对被排课或预约的时段等信息的灵活处理和直观显示为用户操作提供便利。该系统已在中南民族大学部分学院推广使用,取得了较好的效果。

基于Web的现代远程网络教学平台的研究与实现

分析总结出网上教学平台应该具备的核心功能，并重点介绍基于Web的现代远程网上教学平台的建设与研究。

基于OGC WPS的Web环境遥感图像处理技术研究

针对网络环境下遥感图像信息高效共享和互操作问题,结合工作流及其建模语言和开放地理信息系统协会网络处理服务(OGC WPS)规范,提出了一种遥感图像分布式处理的系统架构.在该架构中所有的图像获取和处理功能都包装成满足OGC标准的Web服务,复杂的处理过程则通过链接简单功能服务来实现.为验证该架构,构建了一个基于网络的遥感水体信息提取原型系统.实验结果表明,该原型系统可以在分布式条件下进行遥感数据获取和水体信息提取.系统具有服务链组织和执行能力,独立于语言、平台和满足OGC规范等优点.