一种带方向锁定的移动通信信道借用指配策略

介绍了一种蜂容移动通信系统中基于紧凑模式的信道借用指配策略（CPCB）的优化策略－－基于紧凑模式带方式锁定的信道借用指配策略（C‘CBDL）,这 策略不仅将带方向锁定的优点引入到CPCB策略中,而且优化了信道策略管理机制,将新算法在一种普遍采用的蜂窝网络上进行仿真,分别获得了在一种均匀和两种非均匀模式业务分布下的系统性能,结果表明,CPCBDL的系统性能不仅明显优于FCA,BDCL和基于CP的DCA等策略,也优于CPCB策略,这对于提高蜂窝移动系统的频谱利用率和业务吞吐能力均有十分重要的意义。     

无线移动信道OFDM数据传输方式

概述了无线移动信道的特点和数据传输方式，阐述了正交频分多路（ＯＦＤＭ）在模拟无线移动信道中传输数据的工作原理，给出频率调制（ＦＭ）模拟信道和单边带（ＳＳＢ）调制模拟信道ＯＦＤＭ数据传输系统的构成，并提出卫组低速ＯＦＤＭ／ＳＳＢ数据传输系统的参数。     

T LYMPHOCYTE SUBSETS OF PERIPHERAL BLOOD AND THEIR RELATIONSHIP WITH BETA－2－MICROGLOBULIN IN MULTIPLE MYELOMA

ＴＬＹＭＰＨＯＣＹＴＥＳＵＢＳＥＴＳＯＦＰＥＲＩＰＨＥＲＡＬＢＬＯＯＤＡＮＤＴＨＥＩＲＲＥＬＡＴＩＯＮＳＨＩＰＷＩＴＨＢＥＴＡ－２－ＭＩＣＲＯＧＬＯＢＵＬＩＮＩＮＭＵＬＴＩＰＬＥＭＹＥＬＯＭＡ（郑成云）（陈学民）（王宝燕）（陈开浚）ＺｈｅｎｇＣｈｅｎ...     

STATIC CORRECTION MODES IN DYNAMICAL SIMULATION OF FLEXIBLE MULTIBODY SYSTEM WITH CLOSED LOOPS

ＳＴＡＴＩＣＣＯＲＲＥＣＴＩＯＮＭＯＤＥＳＩＮＤＹＮＡＭＩＣＡＬＳＩＭＵＬＡＴＩＯＮＯＦＦＬＥＸＩＢＬＥＭＵＬＴＩＢＯＤＹＳＹＳＴＥＭＷＩＴＨＣＬＯＳＥＤＬＯＯＰＳ＊ＹｕＱｉｎｇ（于清）ＨｏｎｇＪｉａｚｈｅｎ（洪嘉振）（Ｄｅｐｔ．ｏｆＥｎｇｉｎｅｅｒ...     

APPLICATION OF HMB－45 MONOCLONAL ANTIBODY AND S100 PROTEIN IN THE IMMUNOHISTOCHEMICAL DIAGNOSIS OF MELANOMA

ＡＰＰＬＩＣＡＴＩＯＮＯＦＨＭＢ－４５ＭＯＮＯＣＬＯＮＡＬＡＮＴＩＢＯＤＹＡＮＤＳ１００ＰＲＯＴＥＩＮＩＮＴＨＥＩＭＭＵＮＯＨＩＳＴＯＣＨＥＭＩＣＡＬＤＩＡＧＮＯＳＩＳＯＦＭＥＬＡＮＯＭＡＬｉｕＤａｎｙａ（刘丹亚）；ＳｕＢａｏｓｈａｎ（苏宝山）；Ｘｕ...     

EFFECTS OF BERBAMINE ON CONTRACTION AND Ca2＋INFLUX OF ISOLATED BASILAR ARTERY AND THORACIC AORTA IN RABBITS

ＥＦＦＥＣＴＳＯＦＢＥＲＢＡＭＩＮＥＯＮＣＯＮＴＲＡＣＴＩＯＮＡＮＤＣａ２＋ＩＮＦＬＵＸＯＦＩＳＯＬＡＴＥＤＢＡＳＩＬＡＲＡＲＴＥＲＹＡＮＤＴＨＯＲＡＣＩＣＡＯＲＴＡＩＮＲＡＢＢＩＴＳＬｉＬｅ（李乐）；ＺｈａｎｇＣａｉｌｉｎｇ（张彩玲）；Ｚｈｕａｕｇ...     

STUDY ON INTELLIGENT DEVELOPMENT AND BEHAVIORAL PROBLEMS OF IRON－DEFICIENT SCHOOL CHILDREN

ＳＴＵＤＹＯＮＩＮＴＥＬＬＩＧＥＮＴＤＥＶＥＬＯＰＭＥＮＴＡＮＤＢＥＨＡＶＩＯＲＡＬＰＲＯＢＬＥＭＳＯＦＩＲＯＮ－ＤＥＦＩＣＩＥＮＴＳＣＨＯＯＬＣＨＩＬＤＲＥＮ（洪琦）（姚凯南）（刘灵）（赵兵健）ＨｏｎｇＱｉ；ＹａｏＫａｉｎａｎ；ＬｉｕＬｉｎｇ；Ｚｈ...     

GENERATIVE CAPP APPROACH BASED ON RESOURCE MODEL AND FEATURE MODEL

ＧＥＮＥＲＡＴＩＶＥＣＡＰＰＡＰＰＲＯＡＣＨＢＡＳＥＤＯＮＲＥＳＯＵＲＣＥＭＯＤＥＬＡＮＤＦＥＡＴＵＲＥＭＯＤＥＬ＊ＮｉＱｉａｎｆｕ（倪前富）ＤａｉＧｕｏｈｏｎｇ（戴国洪）ＹａｎＪｕｎｑｉ（严隽琪）ＭａＤｅｎｇｚｈｅ（马登哲）（Ｄｅｐｔ．ｏｆＭｅｃｈ...     

IN VITRO GLYCATION OF HEMOGLOBIN (HB):CHOOSING THE APPROPRIATE MODEL

ＩＮＶＩＴＲＯＧＬＹＣＡＴＩＯＮＯＦＨＥＭＯＧＬＯＢＩＮ（ＨＢ）：ＣＨＯＯＳＩＮＧＴＨＥＡＰＰＲＯＰＲＩＡＴＥＭＯＤＥＬＦａｎｇＺｈｉｙｕ；Ｒ．Ｒ．Ｌｉｔｔｌｅ，Ｈ．Ｍ．Ｗｉｅｄｍｅｙｅｒ，Ｄ．Ｅ．Ｇｏｌｄｓｔｅｉｎ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｉｌ...     

LEISHMANIA PROMASTIGOTES EVADE INTERLEUKIN 12 INDUCTION BY MACROPHAGES AND STIMULATE A BROAD RANGE OF CYTOKINES FROM CD_（4）~（＋

ＬＥＩＳＨＭＡＮＩＡＰＲＯＭＡＳＴＩＧＯＴＥＳＥＶＡＤＥＩＮＴＥＲＬＥＵＫＩＮ１２ＩＮＤＵＣＴＩＯＮＢＹＭＡＣＲＯＰＨＡＧＥＳＡＮＤＳＴＩＭＵＬＡＴＥＡＢＲＯＡＤ　ＲＡＮＧＥＯＦＣＹＴＯＫＩＮＥＳＦＲＯＭ　ＣＤ_（４）~（＋）ＴＣＥＬＬＳＤＵＲＩＮＧＩ...     

Dynamic Channel Allocation in Sectored Cellular Systems

It is known that dynamic channel assignment(DCA) strategy outperforms the fixed channel assignment(FCA) strategy in omni-directional antenna cellular systems. One of the most important methods used in DCA was channel borrowing. But with the emergence of cell sectorization and spatial division multiple access(SDMA) which are used to increase the capacity of cellular systems, the channel assignment faces a series of new problems. In this paper, a dynamic channel allocation scheme based on sectored cellular systems is proposed. By introducing intra-cell channel borrowing (borrowing channels from neighboring sectors) and inter-cell channel borrowing (borrowing channels from neighboring cells) methods, previous DCA strategies, including compact pattern based channel borrowing(CPCB) and greedy based dynamic channel assignment(GDCA) schemes proposed by the author, are improved significantly. The computer simulation shows that either intra-cell borrowing scheme or inter-cell borrowing scheme is efficient enough to uniform and non-uniform traffic service distributions.     

A new channel allocation scheme for hierarchical wireless networks

A channel allocation scheme for hierarchical wireless networks was proposed in terms of the connection-level quality of service. The channel allocation scheme was analyzed using both horizontal channel borrowing and vertical traffic overflowing. Pre-emptive priority strategies are used to classify real-time services and non-real-time services, real-time service is given higher priority for it is allowed to pre-empt channels used by non-real-time service. Some channel borrowing thresholds and acceptance ratios are used to avoid channel locking or dynamic power control, which can also be dynamically adjusted according to network load. Simula-tion results show that the proposed schemes can improve the system performance.     

A New Traffic Model for Mobile Wireless Networks

A new traffic model for mobile wireless networks was given and analysed. In the model, it is considered of traffic characteristic for two special periods of time. A pre-emptive priority scheme combined with channel borrowing strategy according to the speciality was proposed. All the channels can be used by non-real-time services, and real-time services are given higher priority for they are allowed to pre-empt channels used by non-real-time services. Either real-time handoff requests or non-real-time handoff requests can be queued in queues when there is no channel can be used. Some channels are reserved for real-time handoff requests, which can also be used by non-real-time service when they are idle. Simulation results are also given. It is seen that our scheme performs better than other schemes when the arrival rate of real-time services is much higher than non-real-time services.     

基于QoS升降级的无线单播多播混合带宽资源分配方法

在单播与多播混合服务的OFDM蜂窝系统中,因负载较重而使带宽资源被完全占用时,为接纳更多的多播用户,在单播多媒体用户可接受的范围内提出：基于信道容量平滑的QoS升降级带宽借用方法.通过建立QoS升降级的子载波借用模型和CUpDown-QoS算法,达到最大化多播用户数和减小多播切换呼叫中断率;提出了GoS保证下,限制新呼叫的动态带宽借用阈值,给出基于Markov模型的CBP（Call Blocking Probability）与HDP（Handoff Dropping Probability）最优折中的阈值确定方法,以及多播优先的动态带宽借用策略对阈值确定的影响.     

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研究Logit随机网络配流模型及实现模型求解的Dial算法,针对原模型及算法的缺陷,通过引入路段长度相关的容错系数指标重新定义有效路径的判定条件,在此基础上提出一种改进的Dial算法,并应用于Logit随机网络配流模型中.改进算法在不降低原算法精度下不仅保留了原算法的无需路径枚举、计算效率高等优越性,而且满足实际出行者偏好在较短路段上“迂回”选择潜在有效路段的特点.最后通过一个路网实例对2种算法的配流结果进行了对比.结果表明,改进的算法避免了原算法缺陷导致的结果异常,配流效果更加符合实际,其计算效果明显优于原算法.     

求解柔性Job-shop调度问题的混合粒子群算法

针对柔性Job-shop调度问题,提出了一种混合粒子群算法,该算法对设备分配和工序调度采用不同的编码方法和更新方式,提出了基于设备的初始化算法和基于工件序列的初始化算法来提高PSO初始种群的质量,同时提出了4种不同的邻域结构,分别实现了基于此四种邻域结构的模拟退火搜索算法,将它与粒子群算法进行有效混合来提高粒子群算法的局部搜索能力,实验表明HPSO的有效性.     

椭圆曲线密码算法的边信道攻击研究

边信道攻击是一种对密码算法实现的有效的攻击.针对椭圆曲线密码的实现,简单边信道攻击可以逐步确定私钥.文中讨论了通过模糊私钥的标量表示和椭圆曲线计算序列的关系来抵抗简单边信道攻击.为了分析这些算法,文中提出了一种新的方法,即把椭圆曲线标量乘运算看作马尔可夫链.理论证明,这种方法比标准的简单边信道攻击更有效.     

长江小南海枢纽施工二期导流明渠通航条件研究

根据小南海枢纽河段河势及水流条件特点,通过水工模型试验和船模试验相结合的方法,分析了小南海枢纽施工二期导流明渠通航条件及存在问题,提出了明渠进口段炸除碍航礁石、出口段开挖新航槽的优化方案。研究表明:导流明渠原设计方案明渠进、出口段礁石碍航严重,通航水流条件差;优化方案通过整治措施显著改善了导流明渠的通航条件,保障了小南海枢纽施工二期长江上游航运的安全畅通。     

New strategies for collision resolution of multi-access channel

ABSTRACT： The truncated binary exponential back-off algorithm is one of the most effective methods applied in collision resolution process of random multi-access channel. In this study, two new strategies are presented to improve the capability of the truncated binary exponential back-off algorithm. In the new strategies, the sizes of the initial window size or the operating window sizes are adjusted dynamically, which always bring a significant improvement for the self-adaptability of the original A series of experiments are simulated and the results verify that the new strategies can make the implementation more stable and effective than the original algorithm.