非正则LDPC码在DSP上的实现

首先简单介绍了非正则LDPC码的结构,给出了一种基于IEEE802.16e直接编码法生成的(576,288)非正则LDPC码的编译码原理。然后详细论述了其在TI定点DSP(TMS320C5510)上的定点化算法实现方式,并在经过C和部分汇编优化后将算法效率提高了70%以上,达到了实时系统要求。最后给出了该LDPC码与(2,1,7)卷积码在AWGN信道下的性能对比,表明这种中短码长的非正则LDPC码较卷积码有较大的纠错性能优势。     

当前建筑劳务企业存在问题的分析

目前,我国建筑劳务制度不尽完善,在资质审批方面存在漏洞,因此只有正视建筑劳务企业存在的问题并有效解决,才能进一步发展与壮大我国建筑劳务企业。     

Identification model development for proactive response on irregular operations (IROPs)

The demand for air transportation service in Korea has been increasing rapidly, while the airport operation system has become even further advanced and complex. Accordingly, concerns regarding negative ripple effects, such as damage caused by flight delays or cancellations due to irregular operations (IROPs) of airports, have been amplifying. The IROPs is being newly defined, and guidelines for establishing a response system are being proposed in the U.S. and the U.K. However, studies in relation to preemptive and predictive responses aimed at minimizing the negative impacts, such as to analyze ripple effects generated after an incident, have not been sufficiently conducted. Accordingly, this study was conducted to analyze the ripple effects of IROPs according to severity and duration time, and to thus suggest a methodology to enable predictive response. The situation of IROPs was simulated and analyzed using the tower log data of 2015 from Jeju International Airport (CJU), Gimpo International Airport (GMP), and Gimhae International Airport (PUS) in Korea. The five-level classification for IROPs was then suggested using the K-means algorithm. The methodology suggested was verified for applicability to actual airport operation through scenario analysis. It is expected to serve as a framework for establishing the quantitative standards for goal setting with which airport operators solve the situation of IROPs.     

案例分析工程招投标过程中的不规范行为

工程招投标制是工程基建行业和固定资产投资管理体制改革的主要内容之一。本文通过现实工程招投标案例,从多方面深入分析了目前工程招标投标过程中存在的不规范行为,并提出解决方法。     

我国农村金融发展效率与农民收入增长

运用1978—2004年的统计数据，对中国农村金融发展效率与农民收入增长的关系进行了实证研究，结果显示，农村金融发展效率对农民收入增长具有显著的负效应。     

工业后发地区金融抑制研究——以中西部五省区为例

在我国中西部工业后发地区面临的金融抑制日益凸显的背景下,重点探讨了各种代表性金融机构的经营特点和工业后发地区资金供求的特征,解决工业后发地区金融抑制问题应该采取措施:一是应当在利率市场化的条件下将非正规金融①正规化;二是应对现存的正规金融机构采取适度的金融约束。     

农村非正规信用活动中征信过程及应用价值分析

城乡在二元经济格局下,已在城市普遍推开的征信制度并不完全适应于我国广大农村特别是传统农区。同时,新型农村金融体系的重构又不能因为征信制度建设滞后这一瓶颈而裹足不前。事实上,在农村信用中所存在的“隐性征信”,由于其极大地降低了征信成本,成为我们今后建立“显性征信”的前提条件与过渡形式。当然,“隐性征信”的局限性同时决定了其作为征信模式存续的暂时性。     

某平面不规则高层商住楼结构设计

介绍一栋高层商住楼的结构设计过程,阐述结构设计中概念设计和构造措施的应用,以及相关计算参数的合理取值等,并对计算结果进行了分析。     

发展中国家促进就业的做法及其借鉴

失业是发展中国家面临的共同难题。针对日趋严重的就业问题，发展中国家采取了多种财政经济措施以缓解就业压力。发展中国家促进就业的做法及经验，对于我国缓解就业压力具有重要的借鉴意义。在经济结构调整时期，必须通过保持适度的经济增长速度、建立市场导向就业机制、大力促进非正规就业、对劳动力供给进行必要的调控、加大人力资本投资力度等途径以促进就业。