Advances in the Therapeutic Effects of Apoptotic Bodies on Systemic Diseases

Apoptosis plays an important role in development and in the maintenance of homeostasis. Apoptotic bodies (ApoBDs) are specifically generated from apoptotic cells and can contain a large variety of biological molecules, which are of great significance in intercellular communications and the regulation of phagocytes. Emerging evidence in recent years has shown that ApoBDs are essential for maintaining homeostasis, including systemic bone density and immune regulation as well as tissue regeneration. Moreover, studies have revealed the therapeutic effects of ApoBDs on systemic diseases, including cancer, atherosclerosis, diabetes, hepatic fibrosis, and wound healing, which can be used to treat potential targets. This review summarizes current research on the generation, application, and reconstruction of ApoBDs regarding their functions in cellular regulation and on systemic diseases, providing strong evidence and therapeutic strategies for further insights into related diseases.     

通信建设项目评价模型研究

为提高项目决策的科学性和准确性,本文提出采用TOPSIS模型进行多目标决策,同时建立科学的指标体系和权重分配体系,解决项目多方案决策的难题。     

一种多级混沌同步通信系统

本文了蔡氏混沌同步通信系统的主要性质和局限性,提出了一种多级混沌安全通信系统,证明了该系统对传输信号可以完全重建,在有效带宽,失真特性及安全性和方面获得了改善。文中出了给利用该系统进行语音数据和静止图像数据传输的实例。     

MIMO移动通信系统中的预编码技术研究

MIMO技术利用多根天线实现多发多收,能够在不增加传输带宽和发射功率的条件下,成倍地提高系统的数据速率;而预编码技术则可以利用接收端反馈回来的信道状态信息对信号进行预处理以改善信号的传输性能,从而达到消除干扰的目的,使得无线通信系统的可靠性得以提升。因此对MIMO系统预编码技术的研究,是解决如何提升无线通信系统性能的关键问题,具有重大的研究意义。     

一种基于分组填充Mix策略的匿名通信机制

Mix机制为实现匿名通信技术提供了可行的解决方案,但攻击者仍可以在一定程度上通过流量分析来获取通信关系。为了进一步提高Mix机制对抗信息量分析攻击的能力,提出了分组填充的思想,并基于分组填充Mix策略给出了一种新型匿名通信机制。算法分析和仿真实验表明,与传统Mix机制相比,新的基于分组填充的Mix机制,能在有效抵御信息量分析攻击的同时,进一步降低网络的额外带宽开销。     

CDMA移动通信中多址用户干扰抵消技术

本文简要讨论了码分多址移动通信中多址用户干扰的产生和抵消机理,并分别介绍了前向链路和反向链路的多址用户干扰抵消技术。     

多仪器测试系统及其串行通信驱动程序的开发应用

为解决多仪器在应用程序中与计算机通信的问题，概述了由多仪器构成的测试系统及其硬件实现与仪器设定方法，结合多仪器串行通信驱动软件的开发阐述了应用程序对驱动程序的引用方法，并展示了多仪器测试时的一个应用程序界面。实际应用表明，通过串口扩展实现多仪器通信而构成的测试系统具有构成模式简单，测试参数可靠，扩展方便等特点。利用动态链接库技术生成的多仪器驱动软件提高了软件的开发速度，增强了软件的可靠性。     

CBTC系统中现地工作站合设方案研究

在CBTC系统架构中,联锁上位机和列车自动监控(ATS)值班工作站作为两个独立的操作终端,承担着不同的功能和角色.随着CBTC系统产品在国内的广泛应用以及地铁精细化管理和减少维护设备要求的提出,运营方对联锁上位机和AT S车站值班工作站提出了合设的招标要求.为了实现此目标,文章通过对比分析CBTC系统架构中两个操作终端...     

Collaborative remembering in older adults: Age-invariant outcomes in the context of episodic recall deficits.

Rapidly growing research reveals complex yet systematic consequences of collaboration on memory in young adults, but much less is known about this phenomenon in older adults. Young and older adults studied a list of categorized words and took three successive recall tests. Test 1 and 3 were always taken individually, and Test 2 was done either in triads or alone. Despite older adults recalling less overall than young adults, both age groups exhibited similar costs and benefits of collaboration: Collaboration reduced both correct and false recall during collaborative remembering, was associated with more positive beliefs about its value, and produced reminiscence, collective memory, and some forgetting in its cascading effects on postcollaborative recall. We examine the role of retrieval organization in these effects. As environmental support may play a substantial role in healthy aging, the relatively preserved effects of collaboration on memory in older adults hold promise for testing judicious uses of group remembering in aging. (PsycINFO Database Record (c) 2011 APA, all rights reserved)