Based on the Keyed-Hashing for Message Authentication ( HMAC) with Key Collection Exposure, Dynamic Probabilistic Packet Marking and modern algebraic theoretics, a new Authenticated IP Traceback Scheme against DRDoS/ DDoS was proposed.

1、

Online Test System Based on HMAC Password Authentication

基于HMAC口令认证的在线考试系统

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2、

It combines the secret, the ASCII label, and the seed data we give it by using the keyed-Hash Message Authentication Code ( HMAC) versions of both MD5 and SHA-1 hash functions.

它使用基于哈希的消息验证码（HMAC）的MD5和SHA-1两种哈希函数将密钥，ASCII字符以及我们给的种子结合起来。

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3、

A Mechanism for Message Authentication using HMAC-SHA 1

基于HMAC-SHA1算法的消息认证机制

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4、

Results The genotype of mixed infection was genotype 1 and 3. Conclusion HMA is a rapid, simple and accurate method to detect mixed infection.

结果确认此病例的基因型为1型和3型的混合感染。结论异双体动态分析法是一个快速，简单，准确的方法。

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5、

The results showed that stress caused by vehicle loads is lower than the HMA admissible tension strength, and cracks propagate under repeated traffic loading.

计算结果表明，半刚性基层开裂以后，车辆荷载作用一般不会引发超过沥青面层材料极限强度的应力，所以不会导致裂缝的失稳扩展，反射裂缝主要是疲劳扩展的结果；

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6、

Whatsoever, the modified anti-flaming and warm-mix asphalt mixture is designed based on the Marshall method of HMA.

此外，沿用规范中热拌沥青混合料的马歇尔设计方法，对温拌阻燃改性沥青混合料进行了设计。

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7、

His remarks showed a certain jejunity.

他的言论表现出几分幼稚。

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8、

The argument was criticized for its jejunity.

这番论点因空洞肤浅而受到批评。

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9、

Secondly, it introduces the development of Joint Committee Accreditation Health Organization, and then explains the standard Joint commission international accreditation standards for hospital and its characteristic, and analyzes the JCIA application in Chinese hospital, then compares the differences between ISO9000 and JCIA.

然后介绍JCIA认证的发展，阐述JCIA标准的内容和特点，并分析JCIA标准在我国应用情况，并比较JCI标准和ISO9000：2000标准不同。

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10、

JCIA Japan Camera Industry Association

日本摄影机工业协会

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11、

After a brief introduction of the SIP protocol, it analyzes the overall structure of IP-PBX system.

对SIP协议做了简单介绍之后，接着对IP-PBX的总体结构做了分析。

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12、

IP-PBX is one of the hottest research directions in recent computer telecommunication integration technology domain.

IP-PBX系统是近年来计算机网与传统电话系统技术融合领域的研究热点。

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13、

Implementation Technology of Value-added Services in IP-PBX System

IP-PBX系统增值业务实现技术研究

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14、

With the IP-PBX systems developing in the small-middle enterprises, the implement becomes simple.

随着IP-PBX系统在中小型公司中越来越普及，实现也越来越简单，成本的降低便成为普遍关注的重点。

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15、

At last, the author took part in the project of Nanchang Municipal Public Group Call Center, based on it, detailedly expounded the design and realize process of the Asterisk-Based IP-PBX System.

并以南昌市政公用集团客户呼叫中心整合系统工程作为项目依托，详细阐述了Asterisk平台下呼叫中心的设计实现过程。

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16、

Protocol/ transport technologies such as XML, HTTP, Java Telephone API, and SNMP may be used for IP-PBX communication based on the back end system.

协议/传输技术，例如XML，HTTP，Java Telephone API，以及SNMP，都会被应用于基于后端系统的IP-PBX通讯。

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17、

The main content of this thesis is IP-PBX call routing system, which is in the control-layer of IP-PBX devices.

本文的研究对象是IP-PBX的呼叫路由系统，它位于IP-PBX设备的控制层，多种不同通信终端在呼叫路由系统的控制下实现互通。

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18、

User agents are typically phones ( POTS, mobile phones, soft phones, IP-PBX devices, and so on), but can be any SIP-enabled device.

用户代理一般是电话（POTS、移动电话、软件电话、IP-PBX设备，等等），但可以是任意的允许SIP的设备。

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19、

Further more, we elaborated the open source Asterisk specifically, which has good flexibility and scalability. In order to achieve the service expansion of IP-PBX, we should open appropriate architecture and interface, load and configure some related plugins and modules.

另外，对开源的PBX软件包asterisk作了具体的阐述，它具有一定的灵活性和扩展性，通过开放相应的架构和接口，加载和配置相关的对应的插件和模块来实现IP-PBX业务的扩展。

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20、

After that, the whole scheme of IP-PBX system based on Asterisk and the implementation frame of its components are presented.

然后给出了基于Asterisk实现IP-PBX通信系统的原理和基本通信的实施方案；

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