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对冲基金（hedge fund），也称避险基金或套利基金，是指由金融期货（financial futures）和金融期权（financial option）等金融衍生工具（financial derivatives）与金融组织结合后以高风险投机为手段并以盈利为目的的金融基金。它是投资基金的一种形式，属于免责市场(exempt market)产品。意为“风险对冲过的基金”，对冲基金名为基金，实际与互惠基金安全、收益、增值的投资理念有本质区别。对冲基金采用各种交易手段(如卖空、杠杆操作、程序交易、互换交易、套利交易、衍生品种等)进行对冲、换位、套头、套期来赚 阅读全文
2011年2月13日 #
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淘宝新业务技术研发部是淘宝技术研发部设在北京的研发中心，团队包括技术研发、产品测试、UED（交互设计、视觉设计、用户研究、前端开发）三个方面的职能，是一支专业、综合、高效、团结的团队。欢迎加入我们，一起来实现梦想！淘宝新业务技术研发部目前负责支持的业务有：机票 彩票 酒店旅行 保险 充值 淘工作 淘宝大学 垂直资讯 搜索社区工作地点：北京东三环薪酬：10K-20K/月工作年限：最少3年以上正式工作经历，请在简历中说明淘宝Java开发高级工程师/高级Java架构师（5人）岗位职责：1.根据产品需求进行技术架构设计和代码开发；2.对线上问题进行排查，对系统进行优化；岗位要求：1. 计算机相关专业大 阅读全文
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jQuery 1.5正式版于1月31日如期发布！ jQuery是一个JavaScript库，它简化了HTML文档遍历，事件处理，动画和为网络快速发展的Ajax交互。变化包括一个重写的Ajax模块，划分 jQuery子类的能力，以及许多其他功能增强，修复各种内存泄漏，性能改进和加强跨浏览器的兼容。鼓励测试该版本的用户提供反馈和报告他们遇到的任何错误。Right on schedule jQuery 1.5 is ready for consumption!This release has been a long time coming and has been a real team effor 阅读全文
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The uniform distributed topic message Forwarding Policy specifies whether a sent message is forwarded to all members.The valid values are:Replicated: The default. All physical topic members receive each sent message. If a message arrives at one of the physical topic members, a copy of this message i 阅读全文
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When resource managers, such as the Oracle Database (including AQ and RAC), provide read-only optimizations, Oracle WebLogic can provide a read-only, one-phase commit optimization that provides a number of benefits – even when enabling multiple connections of the same XA transactions & 阅读全文
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下载PDF: http://tomcatmonitor.googlecode.com/files/WebLogic_Server_11g_NodeMan_sp.zip 阅读全文
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As of this release, Oracle provides a supplement ZIP installer for development-only installations. This installer supplements the development-only installer that has been provided since WebLogic Server 10.3.3. The supplemental installer includes the following additional WebLogic Server components fo 阅读全文
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What is a GridLink Data SourceA single GridLink data source provides connectivity between WebLogic Server and an Oracle Database service targeted to an Oracle RAC cluster. It uses the Oracle Notification Service (ONS) to adaptively respond to state changes in an Oracle RAC instance. An Oracle Databa 阅读全文
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Using ActiveCache, applications can easily access Coherence data caches. ActiveCache provides a @Resource annotation that allows a Coherence NamedCache cache object to be identified and dynamically injected into a servlet or EJB. As an alternative to resource injection, applications using ActiveCach 阅读全文
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CAT is a Web-based class analysis tool which simplifies filtering classloader configuration and aids you in analyzing classloading issues, such as detecting conflicts, debugging application classpaths and class conflicts, and proposes solutions to help you resolve them.CAT is a stand-alone Web appli 阅读全文
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In WebLogic Server, you can deploy the library using the Administration Console or the command-line weblogic.Deployer tool. For information about weblogic.Deployer, see "Deploying Applications and Modules with weblogic.Deployer" in Deploying Applications to Oracle WebLogic Server.To deploy 阅读全文
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You can configure a network channel to use socket direct protocol (SDP). To configure SDP for a channel:If you have not already done so, in the Change Center of the Administration Console, click Lock & Edit (see Use the Change Center).In the Administration Console, expand Environment and sel 阅读全文
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Apache Maven is a software tool for building and managing Java-based projects. Now you can use a Maven plug-in for WebLogic Server (weblogic-maven-plugin) to perform deployment operations similar to those supported by the command-line utility, weblogic.Deployer. The plug-in lets you deploy, redeploy 阅读全文
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Service Component Architecture (SCA) provides a model for building enterprise applications and systems as modular business services that can be integrated and reused. WebLogic SCA provides support for developing and deploying SCA applications using Plain Old Java Objects (POJOs).WebLogic SCA is base 阅读全文
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好消息, WebLogic 10.3.4 (Oracle WebLogic Server 11gR1PS3, 11gR1 PatchSet 3)正式提供下载了, 地址: http://www.oracle.com/technetwork/middleware/weblogic/downloads/wls-main-097127.html 安装包中文说明及图片说明见文末.Oracle WebLogic Server DownloadsThank you for accepting the OTN License Agreement; you may now download this softw 阅读全文
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Core ServerThis section describes the new Core Server features for WebLogic Server 10.3.4.Exalogic Elastic Cloud Software SupportThe following performance optimizations have been added to WebLogic Server to support Oracle Exalogic Elastic Cloud Software:You can enable the DomainMbean.ExalogicOptimiz 阅读全文
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经过四个里程碑版、三个RC版，Spring框架终于发布了3.0 的正式版。Spring 3.0.0 GA的主要变化：Spring 3.0引入了MBeanExporter，用于扫描于FactoryBean-exported独立的资源Spring 3.0增加了扫描自动检测JavaEE 6定义的中的javax.annotation.ManagedBean类型的组件的能力Spring 3.0完全支持 GlassFish V3 GASpring 3.0重构了ListableBeanFactory类，删除其中的getBeansWithAnnotation (Class,boolean,boolean) 方 阅读全文
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过去几个星期，51CTO对Java EE 6的新特性进行了一系列介绍。除了Servlet 3.0的特性，Java EE 6也使用了新的JSF 2.0标准。下面我们来看一看JSF 2.0是如何简化页面制作并提供Ajax支持的。最后，我们对Servlet 3.0和JSF 2.0的新特性进行了总结。简化JSF 2.0页面制作JavaServer Faces技术提供了一个服务端组件框架，简化了Java EE应用程序用户界面的开发，其中最显著的改进是页面制作，通过使用标准的JavaServer Faces视图声明语言（JavaServer Faces View Declaration Language， 阅读全文
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Jersey is the open source, production quality, JAX-RS (JSR 311) Reference Implementation for building RESTful Web services. But, it is also more than the Reference Implementation. Jersey provides an API so that developers may extend Jersey to suit their needs. The governance policy is the same as th 阅读全文
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Java EE 5平台引入了Java持久化API（Java Persistence API，JPA），它为Java EE和Java SE应用程序提供了一个基于POJO的持久化模块。JPA处理关系数据与Java对象之间的映射，它使对象/关系（O/R）映射标准化，JPA已经被广泛采用，已经成为事实上的O/R持久化企业标准。Java EE 6带来了JPA的最新版本 — JSR 317：Java持久化2.0，JPA 2.0带来了许多新特性和增强，包括：1、对象/关系映射增强；2、Java持久化查询语言增强；3、一种新的基于标准的查询API；4、支持悲观锁定。对象/关系映射增强JPA 阅读全文