RESTful Web Services Development Checklist

Representational State Transfer (REST) architectural style proponents describe it as being easy, but this in no way implies that REST is trivial or simplistic, nor does it mean that RESTful systems lack sophistication. The author covers the primary areas that developers must continually consider as they design and build Web services. Tools can certainly provide reminders about these areas and help to track progress, but ultimately, developers must understand the underlying technical issues to be able to make suitable design and implementation choices.     

Visual modeling for agent-based applications

The authors describe a tool that lets nonprogrammers create mobile agents and distributed itineraries using a small set of generic icons. In preliminary experiments, users were able to generate even complex agents in three to four minutes     

基于RESTful架构的RSS订阅服务

介绍了快速获取信息和网站内容的最新更新的一种新技术——简易信息聚合技术(RSS)的基本原理和主要功能;分析了Windows Communication Foundation RESTful架构在资源调用、特定环境下服务集成、数据传输等方面的优势。结合WCF分布式网络的开发工具,详细阐述了在.NET平台下对RSS技术的融合和支持,并通过实例进一步说明.NET平台对RSS源的解析和实现过程。     

面向资源的RESTful Web应用研究

作为Web应用技术的探索与实践,提出了面向资源的RESTful Web应用设计思路.通过对Rails框架下RESTful Web的实现原理进行分析,从资源的规划、控制器的设计、模型的建立、表间关联以及RESTful URI的设计等方面对RESTful Web应用进行了研究,给出了Rails框架下RESTful Web应用的开发步骤.最后,通过一个实例实现了面向资源的RESTful Web应用.这种基于资源的设计将所有功能转化为资源,完全打破了传统的基于动作的设计思路,同时说明了REST思想从Web服务到Web应用是可行的.     

表述性状态转移网络服务平台的研究及实施

电子商务的蓬勃发展使得越来越多的采购商们倾向于利用互联网络进行采购。然而,尽管大部分商业网站都提供了详细周全的产品查询功能,但是当采购商们需要查询大量产品,譬如电子产品元器件,来进行采购时,往往费时费力。而网页这种适宜人类用户进行查询浏览的界面形式并不适合程序来自动处理,一个原因就是网页结构的变化会影响网页数据的抽取过程。本文利用网络服务的思想,使数据抽取通过网站提供的独立于网页的服务来完成,从而避免网页结构变化的影响。在剖析了表述性状态转移面向资源以及对资源进行操作的统一接口特性后,本文指出表述性状态转移用于网络服务的优势。基于这种思想,利用CXF框架和Spring技术构建一个表述性状态转移风格的服务平台,该平台向客户提供查询电子产品信息的网络服务。在此服务支持下,客户端程序可以利用XML解析工具方便地抽取所需要的数据信息。     

REST架构工作流中间件设计与实现

为解决异构应用间的流程化协作问题,比较了主流的面向服务架构实现方案,研究了一种REST架构工作流中间件.该中间件以工作流支撑服务的形式发布,为工作流应用系统提供统一的流程管理环境和任务流转能力.结合需求细化了工作流中间件外部访问接口,详细介绍了REST架构工作流中间件的资源发布方式,以及资源使用过程中工作流控制数据和工作流相关数据的序列化方式,并以实例验证了中间件的可用性.     

Visual aspect-oriented modeling of explorable extended reality environments

Virtual Reality - The availability of various extended reality (XR) systems for tracking users’ and objects’ behavior opens new opportunities for analyzing users’ and...     

基于REST的图形标绘服务系统技术研究

Web服务已经在图形标绘系统的服务化中得到应用,目前所实现的基于SOAP的图形标绘服务系统能够为不同的客户端提供服务,但是移动设备由于其有限的计算能力、有限的内存空间和有限的通信带宽,在充当SOAP服务的客户端时,性能会受到影响。为此,本文对RESTful这种轻量级的Web服务进行研究,与SOAP的图形标绘系统进行比较,论证改善其性能的可行性,搭建满足REST架构风格的原型。实验表明,经过改造的图形标绘系统,大大缩短了移动终端请求服务的响应时间,提高了客户端应用的性能,能够较好满足性能需求。     

Online pairing of VoIP conversations

This paper answers the following question; given a multiplicity of evolving 1-way conversations, can a machine or an algorithm discern the conversational pairs in an online fashion, without understanding the content of the communications? Our analysis indicates that this is possible, and can be achieved just by exploiting the temporal dynamics inherent in a conversation. We also show that our findings are applicable for anonymous and encrypted conversations over VoIP networks. We achieve this by exploiting the aperiodic inter-departure time of VoIP packets, hence trivializing each VoIP stream into a binary time-series, indicating the voice activity of each stream. We propose effective techniques that progressively pair conversing parties with high accuracy and in a limited amount of time. Our findings are verified empirically on a dataset consisting of 1,000 conversations. We obtain very high pairing accuracy that reaches 97% after 5 min of voice conversations. Using a modeling approach we also demonstrate analytically that our result can be extended over an unlimited number of conversations.     

Analyzing conversations of Web services

A composite Web service consists of a set of individual services (or peers), which interact with each other via messages. A conversation is a global sequence of messages exchanged among peers participating in a composite Web service. Interestingly, conversation behavior differs significantly for synchronous and asynchronous communication, even if peers' local behaviors remain the same. The authors use synchronizability and realizability analysis techniques to analyze conversations in the presence of asynchronous communication. With these analyses, they can use model checking to automatically verify conversation behavior for bottom-up and top-down Web service specifications.     

Composing RESTful Services and Collaborative Workflows: A Lightweight Approach

The use of RESTful Web services has gained momentum in the development of distributed applications based on traditional Web standards such as HTTP. In particular, these services can integrate easily into various applications, such as mashups. Composing RESTful services into Web-scale workflows requires a lightweight composition language that's capable of describing both the control and data flow that constitute a workflow. The authors address these issues with Bite, a lightweight and extensible composition language that enables the creation of Web-scale workflows and uses RESTful services as its main composable entities.     

RESTful风格地图瓦片服务的研究

综合当前主流的WebGIS产品和瓦片缓存技术,对地图瓦片服务的重要性和未来WebGIS产品应用的趋势进行了分析.详细阐述了OGC地图瓦片服务执行规范1.0.0版本的重点内容;并且介绍了RESTful风格服务的设计原则.充分利用现有的Web基础设施,从实现的角度给出了地图瓦片服务的体系架构,整体流程,按目录存储地图瓦片的具体结构,以及地图库访问引擎模块的功能接口的实现,完成基于RESTful风格的OGC地图瓦片服务的实现.     

NoSQL Injection Attack Detection in Web Applications Using RESTful Service

Programming and Computer Software - Despite the extensive research of using web services for security purposes, there is a big challenge towards finding a no radical solution for NoSQL injection...     

DSP: Discriminative Spatial Part modeling for Fine-Grained Visual Categorization

Different from the basic-level classification, the Fine-Grained Visual Categorization (FGVC) aims to classify objects belonging to the same species. Therefore, it is more challenging than the basic-level classification. Recently, significant advances have been achieved in FGVC. However, most of the existing methods require bounding boxes or part annotations for training and testing, resulting in limited usability and flexibility. To conquer these limitations, we aim to automatically detect the bounding boxes and parts for FGVC. The bounding boxes are acquired by transferring bounding boxes from training images to testing images. Based on the generated bounding boxes, we employ a multiple-layer Orientational Spatial Part (OSP) model to learn local parts for the object. To achieve more discriminative part modeling, the Discriminative Spatial Part (DSP) model is proposed to select the discriminative parts from OSP. Finally, we employ Convolutional Neural Network (CNN) as the feature extractor and train a linear SVM as the classifier. Extensive experiments on public benchmark datasets manifest the impressive performance of our method, i.e., classification accuracy achieves 79.8% on CUB-200-2011 and 85.7% on Aircraft, which are higher than many existing methods using manual annotations.