利用ACE值构造QC-LDPC码

为进一步提升中短码长下准循环低密度奇偶校验(Quasi-cyclic Low-density Parity-check,QC-LDPC) 码的纠错性能,提出了一种综合短环数目和环连通性的QC-LDPC码构造方法。首先,采用Golomb规则构造QC-LDPC码,对基矩阵中的部分元素进行替换预处理,初步降低短环数目;其次,采用所提的利用近似环外信息度（Approximate Cycle Extrinsic message degree,ACE）的消环掩模算法来优化QC-LDPC码,使得掩模后的校验矩阵具有较大的ACE平均值,最终完成QC-LDPC码的构造。该构造方法简单、通用性强,在短环数目和连通性间进行了平衡。与只考虑减少短环数目、增大围长等方法相比,该方法构造的QC-LDPC码有更加优异的纠错性能。     

人口生活质量水平综合评价

借助多元统计分析方法中的因子分析法 ,对全国 31个省市区的人口生活质量进行了综合评价和分类。中国人口生活质量表现为物质生活质量至关重要、生活环境质量也不可忽视、区域差异显著等特征     

The impacts of student and life satisfaction on tourism students’ perceived sense of belonging

This study explores how tourism students’ satisfaction with their lives and academics affect their sense of belonging within their school communities. The primary supporting research was conducted using a questionnaire, which 285 students in Akdeniz University’s Faculty of Tourism answered. The mean scores of the two scales (life satisfaction and sense of belonging) and the dimensions of student satisfaction were used to conduct multiple regression analysis. The results suggest that two aspects of student life (teaching staff and school management vs. student support and counseling) and life satisfaction had a direct correlation with students’ sense of belonging.     

家庭生命周期与旅游态度的关联研究——以长沙市居民为例

家庭是旅游态度形成的最重要环境背景,也一直是旅游活动的重要组织单元,探究家庭生命周期与旅游态度的关系意义重大.文章依据已有研究成果,建立家庭生命周期模型,制定旅游态度量表,以问卷工具面向长沙市居民进行调查,获得基础数据,运用因子分析得到了追求享受、强调卫生、看重设施、向往体验、关注身心健康等5个方面的旅游态度主成分,通过验证性因子分析后,再用相关分析、多元回归分析探究家庭生命周期与旅游态度5个主成分的关系.结果表明,随着家庭生命周期的演进,人们愈发追求享受、看重设施、关注身心健康.无巢期人群看重设施和关注身心健康的表现低于其他阶段人群,空巢期人群追求享受的表现高于其他阶段人群,空巢期、鳏寡期人群关注身心健康的表现高于其他阶段人群,满巢期人群向往体验的表现高于其他阶段人群.     

An examination of mobile app usage and the user’s life satisfaction

Increased engagement with mobile apps is an emerging trend with people today. Mobile devices have become so personalized that many people consider their mobile device as an extension of themselves. Research has suggested that one driving factor in a person’s adoption of mobile apps is the pursuit of happiness. However, there is little research regarding the influence of apps on a person’s well-being. The purpose of this paper was to examine mobile app usage among college students and the relationship between app usage and one’s satisfaction with life. Findings suggest that there is a correlation between mobile app usage and a person’s level of satisfaction with life. Gender differences in app usage were also found.     

Reaching Goals and Doing Good: Exploring Consumer Responses to Meaningful Advertisements

The purpose of this study is to investigate how consumers respond to meaningful advertisements, which promote products or brands by portraying moral virtues and life meaning. The authors present findings of an online survey in which participants reported their responses to two meaningful advertisements. A conceptual model was proposed and tested based on the survey data. Results demonstrated that when viewing meaningful advertisements participants' perceptions of meaningfulness positively influenced their feelings of elevation, which leaded to favorable attitudes towards the advertisement and brand. Empathy served as a moderator in the conceptual model. Participants who felt low empathy actually experienced stronger feelings of elevation. This study presents how consumers respond to portrayals of moral virtues and life meaning in advertisements. It contributes to the literature of advertising by demonstrating that the emotion of elevation benefits advertising effectiveness. It has significant implications to advertising professionals as well.     

四川秦巴山区信息化建设研究

受自然地理条件限制,四川秦巴山区信息化发展水平还处于初级阶段,同中国的大城市相比,存在着很大的差距,数字鸿沟突出,并呈现出日益拉大的趋势。在全球信息化的大环境下,加强信息化建设奠定了该地区绿色循环发展的基础,是实现传统产业转型升级的核心手段,是改善民生的必然要求。通过对四川秦巴山区信息化建设现状以及信息化发展存在问题的分析,提出了信息化建设要紧密结合现状,依托重点城镇逐步向山区延伸,达到片区全覆盖;以"互联网+"着手,以科技创新为支撑,从而实现该地区经济的循环跨越式发展。     

The contribution of vacations to quality of life

The contribution of vacations to people’s life satisfaction and Quality of Life (QOL) has recently attracted substantial attention among tourism researchers. Yet, most QOL scales do not include vacations: 7% explicitly measure vacations whereas 42% only include items relating to vacations within the broader Leisure domain. Leisure and vacations, however, differ substantially in nature with leisure referring to regular home-based activities and vacations being infrequent leisure activities away from home. As a consequence of the common amalgamation of vacations with leisure, there is limited knowledge about the specific contribution of vacations to people’s QOL. The present study (1) presents empirical evidence for the contribution of vacations to QOL, (2) determines the extent of this contribution, and (3) investigates variation in the extent to which vacations contribute to the QOL of different people. Results indicate that vacations contribute to the QOL of the majority of people, are as important a QOL domain as Leisure and People, and that QOL means different things to different people at different points in their life, representing an individual and dynamic concept.     

循环经济导向下我国水电企业战略的调整

循环经济作为一种崭新的经济发展模式,是解决环境问题、促进经济稳定持续发展的有效途径,而水电的发展与生态经济的关系尤为密切。在简单介绍循环经济理论的基础上,对目前水电企业发展战略及其战略环境进行了分析,指出问题所在,并提出调整策略:确定企业新的社会综合价值管理理念,制定以环保为核心的水电企业发展战略,构建行之有效的环境管理和技术支撑体系,塑造水电企业的绿色环保新形象。     

沈抚连接带“三生”空间的功能均衡性分析

随着人口增长和城市化发展,国土空间利用类型之间的竞争关系逐步增强,空间问题日益突显。自十八大报告明确提出"三生"空间以来,以生产、生活、生态划分的土地空间类型越来越被关注。该研究以沈抚连接带为研究区域,从土地空间的生产、生活和生态功能出发,构建"三生"功能评价指标体系。采用熵权法进行"三生"功能评价,利用GIS技术分析"三生"功能的空间格局。研究结果表明,"三生"功能均较强的街道具有较高的经济发展水平,如五三街道、李石街道,分值为64.96、54.59;生活功能较强的街道一般相邻城市,如五三街道、白塔街道、李石街道,分值为23.15、15.82、11.14,人均道路面积和公共服务设施完备度是主要影响因素;生态功能较高的街道多集中在浑河景观带和北部生态区,如高坎街道、满堂街道、东陵街道,分值为20.50、19.98、19.96,水面面积率、森林覆盖率和景观Shannon多样性是主要影响因素;生产功能较强的街道集中在建设快速区内,如李石街道、五三街道,分值为39.25、25.85,工业产值和服务业产值是主要影响因素。总体上看,受城市和经济建设活动影响强烈的街道的"三生"空间的功能不均衡性较为明显。