Compare of the difference between stateful session bean and stateless sess ion bean 对有状态和会话bean和无状态的会话bean进行了比较和分别论述。
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That improves the security performance of the conventional sess system and enhances the performance of anti - jamming Pn序列的这一特点使通信的安全性受到威胁。
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Therefore , fast and reliable synchronization algorithm is one of key technologies in sess system 因此,迅速、可靠地建立同步是自编码扩频通信最主要的环节之一。
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According to the accounting equation , a firm is assumed to pos ? sess its assets subject to the rights of the creditors and owners 根据会计等式，一个公司所拥有的资产应该等于债权人和所有者对企业的索取权总值。
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In sess , the special way producing the spreading codes determines that the spreading codes are more important in sess communication system 在自编码扩频通信中,特殊的扩频序列产生方式决定了自编码扩频序列对于整个系统性能的影响更是巨大的。
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Some novel technologies are also proposed , such as two dimensional spread spectrum ( 2d - ss ) , self - encoded spread spectrum ( sess ) , multiple input multiple output ( mimo ) , orthogonal frequency division multiplexing ( ofdm ) and so on 另外,对目前新兴的一些抗干扰技术,如二维扩频、超宽带、多天线、自编码扩频等技术也做了简单分析。
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The data recovery at the receiver requires the spreading codes . in sess system , the receiver doesn ’ t know which spreading code will be used , so first it must de - spread the received signal correctly to regenerate the spreading code 自编码扩频系统的扩频序列是接收端事先未知的,不能用事先设计的本地扩频序列产生器产生,需要由恢复的数据获得。
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Based on the principles of dsss and sess , the mechanism of sess employing the ar filter is illuminated . it transfers the data source to dynamic gauss white noise . then quantizing and optimizing the noise , we can get the final spread sequence 它动态地把信源序列转化成高斯白噪声分布的数据流,再通过量化、平衡编码进行序列优化,以得到所需的扩频码。
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The spreading code is acquired from the transmission data source . as a result , the method to generate the spread codes is very important . and the method determines the practical application of sess communication system 自编码扩频通信的扩频序列是从待传输的信源数据流中获得的,因此信源的随机化技术是自编码扩频通信的基础,它在很大程度上决定了自编码扩频通信是否能获得实际应用。
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Shanghai zhengcai metalwork ltd . was found at 2001 , we pre - ferical produce all kinds of carport , bike shed , export hardw - are and foreign trade . the company pos - sess of seasoned te - chnical personnels andworkers 上海正彩金属制品有限公司成立于2001年，是一家生产各式停车棚、停车架、出口金属制品及贸易多元化为一体的专业公司。公司拥有优秀的开发设计员，经验丰富、技术过硬的生产队伍和完善的生产设备。
