空间卫星光通信链路关键技术与方案的研究

光通信是解决低轨卫星与定点卫星间高码率通信瓶颈的最佳途径，其中高频调制速率、大功率光源技术是关键和难点．提出1550nm波段和800nm波段2种解决方案，并对两者进行了对比．在现有条件下，1550nm波段方案是低轨卫星与GE0卫星间高码率通信链路的优选方案．     

直接耦合GMSK调制器低频性能的改进

使用调制技术的数据通信系统需要良好的低频响应，是对基于PLL频率合成器的数据通信系统的重要要求，如GMSK和四电平FSK调制方式都要求调制响应延伸到直流，这种特性许多调制器都不容易满足，重点论述了设计与PLL频率合成器的特性有关的GMSK调制器时遇到的问题，也举例说明了要解决这些问题为什么可以使用两点调制．     

多发性骨髓瘤患者氧自由基代谢状态的研究

测定了不同病期多发性骨髓瘤（MM）患者内源性抗氧化酶—红细胞超氧化物岐化酶（SOD）、谷胱甘肽过氧化物酶（GSH－Px）、过氧化氢酶（CAT）活性，血浆铜锌SOD（CuZn－SOD）、锰SOD（Mn－SOD）及总SOD（T-SOD）活性，血清铜、锌、锰、硒含量及血浆脂质过氧化物（LPO）含量。结果表明非缓解期MM患者红细胞3种抗氧化酶活性明显降低，血浆T－SOD、CuZn－SOD及Mn-SOD活性显著升高，血清锌、锰、硒含量降低，铜含量增高，血浆LPO含量明显增高。提示患者体内氧自由基含量增多，代谢增强，抗氧化能力明显减弱，且与疾病的发展及严重程度有关。     

如何做好岚山港危险品船舶的监督管理工作

随着岚山港危险货物的大量增加,做好危险品船舶的审批工作、加强危险品船舶与船公司的联系,认真查验船舶证书、文书,加强现场监督检查、确保船舶作业安全,加强业务研讨、提高监管人员的素质等措施,可有效提高对危险品船舶监督管理的水平,值得同行借鉴.     

海水自由冷却中央冷却系统设计

本文论述了船舶冷却系统的类型和特点，提出了海水自由冷却中央冷却系统设计思想，并设计了控制系统，为该型冷却系统实船应用奠定了基础。     

中国当代社会的传播结构分析

传播结构是社会结构的重要组成因素。就其表层看,以大众传播为核心,人际传播、组织传播共同构成了社会传播结构的不同层级。就深层看,传播结构表现为以"意义构建"为核心的社会话语生产。如何准确把握当代中国社会的传播结构,从而深刻认识传播的社会功能,发挥其在社会转型过程中的实践意义,是当代中国社会大众传播发展中具体而迫切的问题。     

提升苏州内河港口岸线集约化管理水平的探讨

港口岸线是不可再生的稀缺资源,在社会经济发展中发挥着重要作用。文章以苏州市为分析样本,介绍了苏州内河港口岸线利用现状,通过与周边地区进行对照,分析了当前苏州内河港口岸线管理方面存在的不足,并提出了在建设现代化内河水运体系的背景下,提升苏州内河港口岸线集约化管理水平的途径。     

Artificial anal sphincter with sensor feedback powered by transcutaneous energy transmission

This artificial anal sphincter (AAS) is used to help patients who are in severe incontinence. It consists of two parts. The first part is taken outside with patients. The second is implanted in the bodies to provide independent evacuation for patients. It is powered through transcutaneous energy transmission by the first part. There are two sensors in the second part. One sensor measures the pressure in the cuff-clamp around the recta. The other measures the pressure of the recta. As soon as the pressure measured by the later reaches the threshold, a signal is sent out to patients through wireless communication to alarm patients preparing defecation. Patients can give a start signal to begin defecating after they are ready. And they can also give a signal to stop defecating like a healthy person. With the aids of the novel medical device, patients can defecate as a healthy person. The first generation of this AAS is presented.     

高桩码头桩基沉降研究

高桩码头桩基沉降会对上部结构内力产生一定的影响,但是通常情况下并不进行计算。为了确定码头桩基沉降量,本文结合工程实例,用了理论计算和数值模拟两种方法对桩基沉降进行了计算。结果表明,高桩码头整体沉降大概为几十毫米,不均匀沉降为几毫米。通过对两种计算方法进行对比得出,理论计算更加贴近实际情况,可以作为一种桩基沉降计算的有效方法。     

Productivity change of the Spanish Port System: impact of the economic crisis

ABSTRACT

The main goal of this study was to assess the impact of the economic crisis on the productivity growth of the Spanish Port System (SPS). The Malmquist Productivity Index (MPI) was estimated for the 28 Port Authorities of the SPS, for a ‘non-crisis period’ (2005–2008) and a ‘crisis period’ (2008–2011). From a policy perspective, the MPI is a very useful approach for assessing the productivity change because it can be decomposed into the catching-up index and the frontier productivity index. The results showed that the economic crisis did not impact all of the Spanish Port Authorities equally. Some Port Authorities presented higher productivity growth during the crisis period than in the non-crisis period. Further analysis by the Mann–Whitney test revealed that Port Authority investments and productivity growth were statistically related. Information provided by this study may be very useful for stakeholders and decision-makers, in terms of long-term strategic planning and improving the competitiveness of the SPS. The findings illustrate that the economic crisis should not be seen as an international tragedy, but as an opportunity to adapt port traffics and installations to new needs and market demands.