980 research outputs found

    How to bail out heating industry from intensive energy consumption and low efficiency in China: from perspective of energy, efficiency and heating costs

    Get PDF
    近年来,供热作为基础设施建设内容之一,快速发展。然而,中国供热以燃煤为主,1985-2014年供热耗煤量占供热能源消费结构约90%。供热属于高耗能高污染行业,供热燃煤排放成为中国大气污染不可忽视的因素之一。中国供热劣势在于高耗能、高排放、高投入、低产出。作为一项公共事业,供热不仅与民生息息相关,也与能源、环境紧密相连。研究中国供热如何走出高耗能低效率的困境,事关其未来可持续发展。本文从三个要点出发:能源、效率、价格。热价是考虑供热能源和效率问题不可忽略的部分。于是,针对这五个问题展开研究:(1)影响中国供热能源消费的因素以及中国供热是否能够节能?(2)如果中国供热能够节能,那么预期的节能目标是...In recent years, heating industry develops rapidly as a part of infrastructure construction. Heating industry in China is mainly coal-fired heavy industry. Coal consumption accounts for 90% of the industry’s total energy consumption during 1985-2014. As a result, heating industry‘s high energy consumption and emissions bring intensive pollution to the environment, especially in the main factor of ...学位:经济学博士院系专业:能源学院_能源经济学学号:3242012015369

    Public Department Performance Evaluation Index System Optimisation Design Research ——Based on CPC Fuqing Municipal Committee Bureau of Retired Veteran Cadre

    Get PDF
    在公共管理领域中,公共部门绩效评估已成为前沿课题。绩效指标体系是其核心部分,但在具体操作层面,由于公共部门目标设定的多元化以及内容评估的复杂性,如何构建兼具理论依据和实践可行性的绩效评估指标体系,仍是学界公认的难点。 福清市委老干部局具有公益服务特点,涉及部门类型复杂,更是福州市乃至福建省老干部工作的先进典型,因此是一个较好的研究对象。本文的研究主旨是以中共福清市委老干部局为例,兼顾主客观因素,运用定性和定量相结合的方法,建立公共部门绩效评估指标体系,为涉老部门和服务性为主的党政部门绩效评估指标体系的优化提供一个具体的实践参考。 首先,以文献研究为主,简述公共部门绩效管理相关理论,研究梳理...In public administration field, public department performance evaluation has already become the frontier topic. Performance index system is its core component, but on the specific operations level, due to the diversity and the content evaluation complexities in public department goal setting, how to structure performance evaluation index system combining both the theoretical evidence and practical...学位:公共管理硕士院系专业:公共事务学院_公共管理硕士学号:1512014115035

    Research on Take-away Platform Users’ Repeat Ordering Intention: A Perspective of Perceived Price and Service Quality

    Get PDF
    近几年来,随着团购网站的兴起、打车软件的大热以及外卖平台的风靡,O2O电子商务的商机和细分领域正不断被挖掘和深耕。本文聚焦于外卖平台,外卖O2O模式与其他O2O模式最大的区别在于外卖O2O模式是配送上门,其他O2O模式(如团购)是到店体验,因此,配送质量是外卖O2O模式需要考虑的重要因素。现有的研究要么没有考虑配送质量,要么仅仅将其作为某个变量的一个测度项来研究,无法全面地体现配送质量对外卖平台用户满意和重复订餐意愿的影响。其次,外卖平台近两年来对新老用户采取满减、满返、满送及红包等价格补贴政策,而价格补贴政策是否会对用户的重复订餐意愿产生影响,也是值得深入研究和挖掘的。 本文结合外卖平台的...With the popularity of group-buying sites, taxi-hailing applications and take-away platforms, business opportunities and segments of O2O e-commerce has been deeply explored in recent years. This thesis focuses on take-away platforms. On the one hand, the biggest difference between take-away O2O e-commerce and other O2O e-commerce models is that take-away platforms/sellers deliver food to users whi...学位:管理学硕士院系专业:管理学院_管理科学与工程学号:1772013115108

    Resilience Assessment of Coastal Urban Land-Water System and Landscape Pattern Design

    Get PDF
    在过去的十年间,我国海岸带地区尤其是东部沿海地区,经历了快速城市化的过程,不断加剧的土地利用变化,尤其是不透水面景观的增加引发了一定程度的环境退化。不可逆的景观变化可能会引发城市系统功能的损失以及不良的弹性转变,其中最重要的影响便是水质的退化以及水资源短缺,严重干扰城市水景观安全格局,对该区域水环境与水资源系统造成严重影响。 本研究基于弹性量化框架,利用改进的方法来量化、评估2005-2015年间连云港城市水-土地利用系统的弹性,指标体系中除传统的常用的水质、水量指标外,特别增加了不透水面的相关指标。评估结果发现2005-2015年间连云港水量以及不透水面的弹性变化对叠加的城市水-土地利用系...Coastal areas have experienced rapid urbanization and reclamation (land development) with increasing of impervious surface area, while experiencing considerable environmental degradation. The irreversible changes of landscape pattern may lead to a system’s critical function loss and undesirable resilience transformation. The most significant affects were water quality deterioration and water short...学位:理学硕士院系专业:海洋与海岸带发展研究院_海洋事务学号:3042015115245

    The Different Influence of Money Supply on the Stock Price: Based on Industry Research Perspective

    Get PDF
    货币政策对实体经济的影响机制比较复杂,一直以来是国内外研究关注的金融热点。通常而言,货币政策传导到宏观经济主要有以下三个环节。首先,由中央银行传递到金融市场,影响金融市场货币供给与需求;其次,从金融市场及金融机构到企业等非金融部门的各类经济行为,因金融市场变化所产生的托宾q效应等,改变行为主体的储蓄、投资和消费习惯;此外,由非金融部门等经济行为主体传递到实体经济,影响物价、就业、总产出等。 本文研究的是货币政策到金融市场这一个基本环节,基础货币通过银行体系不断进行派生,从而产生全社会的货币供应量,各类经济主体在满足基本需求之后则会产生货币流动性,从而产生资产配置的需求。股票作为重要的资产形式...The influence of money supply on the stock market is the financial hotspot which is concerned at home and abroad. The impact mechanism of monetary policy on the real economy is complicated, and scholars’ focuses are different. In general, the effect monetary policy transmits to the macroeconomic mainly includes three links as follows. First, that is from the central bank to the financial market, a...学位:经济学硕士院系专业:经济学院_金融硕士学号:1562015115288

    Research on the Government Budget Implementation Evaluation Index Based on the Balanced Scorecard——Taking the Example of Xiamen Maritime Safety Administration

    Get PDF
    随着国家公共财政改革的深入推进,公众对预算管理日趋重视,而预算执行作为预算管理的中心环节,如何推进政府预算执行管理,是政府部门应思考的重要公共财政问题之一。本文尝试以平衡计分卡为理论基础,通过维度分解,把长远目标与短期目标、财务指标与非财务指标相结合,构建政府预算执行评价体系。这一想法能进一步丰富预算管理和平衡计分卡的研究视野,在预算执行管理实践上也属新鲜尝试,是本文的创新点。而预算执行管理的研究对推进民主法治进程、发挥财政资金效益、建设和谐社会起着积极作用,因而本研究还具有政治意义、经济意义和社会意义。本文第一章介绍了研究背景、预算执行和预算执行评价的有关文献、研究意义和研究思路方法。第二章...With the deepening of the national public finance reform, the public is increasingly concerned about the budget management, and budget implementation as the central part of budget management, how to promote the implementation of government budget management, government departments should think about one of the important public financial problems. This paper attempts to use the Balanced Scorecard a...学位:公共管理硕士院系专业:公共事务学院_公共管理硕士学号:1512014115035

    Studies of Russell’s Theory of Types

    Get PDF
    类型理论是罗素为了解决悖论进而实现其逻辑主义理想而提出的理论。1903年,罗素在《数学原则》中提出简单类型论,对类、关系、数等进行类型划分,希望解决了罗素悖论。但是,由于存在简单类型论无法解决的命题悖论,罗素放弃了简单类型论。1903年到1908年间,罗素的主导思想是提出一种基于无类理论的悖论解决方案,但由于替代悖论的发现,使他放弃了这种思路。1908年,罗素以其《以类型论为基础的数理逻辑》一文回到了类型论,并在1910年的《数学原理》中进行详细阐述。这一时期的类型论被学者们称为“分支类型论”。分支类型论依据恶性循环原则,对命题函项做了阶的划分。但是,阶的划分导致了一些逻辑主义的困难与哲学困难...Theory of Types is a theory put forward by Russell, for the purpose of solving paradoxes, to achieve his logicism ideal. In 1903, Russell put forward Simple Theory of Types and divided classes, relations, numbers into different types in his The Principles of Mathematics. He hoped to solve Russell Paradox by this means. However, there are a proposition paradox which Simple Theory of Types cannot so...学位:哲学硕士院系专业:人文学院_逻辑学学号:1042014115232

    Investigation on the Log Volume Adaptive Scaling System Based on OPenCV

    Get PDF
    原木材积检验在林业、木业、造纸业具有十分重要的价值。目前,我国大多数采用的原木材积检验主要依靠手工作业,以“一把尺子、一个印子、一张单子”作为木材检验的“看家法宝”,存在效率低、劳动强度高、检尺误差大等弊端;此外,对检尺结果的滞后管理使行业出现“少开多运”的现象。因此,实现原木材积自动化检验对改善现状具有十分重要的现实意义。本论文应某单位要求,设计出一套可便携移动的原木材积自适应检尺系统。 本文在全面分析系统功能需求的基础上,给出了系统的总体结构,划分出了系统各功能模块,并采用VisualC++开发工具实现了各功能模块的应用程序开发。系统的主要功能模块可分为图像采集模块、图像处理与识别模块、...Log volume measurement has extremely important worth in forestry, wooden industry, papermaking industry department. At Present, the log volume calculation mostly relies on manual operation which works with a ruler, a seal and a list. There is inefficient, labor-intensive and a large scaling error. In addition, scaling results on the delayed management makes the industry has been formed the unspoke...学位:工学硕士院系专业:物理与机电工程学院机电工程系_测试计量技术及仪器学号:1992007115115

    中国教育分流研究的进展与课题:高中教育不平等以及对教育机会的影响

    Get PDF

    Character stabilizer limits of a SBPC-related nilpotent subgroup

    Get PDF
    群表示论是近代数学的一个重要分支,而特征标的理论是研究有限群常表示的最主要工具之一.Isaacs在创立特征标理论时提出了特征标稳定限制的概念,引入了特征标三元组的诱导子,拟本原特征标三元组以及相对正规子群的特征标稳定限制的概念。本学位论文由这几个概念出发,讨论了相对于一个特殊的正规子群的特征标的稳定限制之间的关系,证明了对于一个有限群G,N正规于G,N是相对SBPC-相关幂零群,则相对于这样的正规子群N的G的不可约特征标的稳定限制有相同的次数. 本学位论文共分为三章. 第一章,我们对与论文有关的背景、研究方向以及发展动态进行介绍,并概述了本学位论文的主要工作. 第二章,我们给出一些与论文...The representation of finite groups is an important branch of mordern mathematics. Character theory is one of the main tools of the representation of finite groups over the complex field.Isaacs put forward character stabilizer limits conception when he studied character theory of finite goups.Using the concepts of inductor of a character triple,stabilizer limits,and quasi-primitive character tripl...学位:理学硕士院系专业:数学科学学院数学与应用数学系_基础数学学号:20042305
    corecore