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分享 实证型高水平英文论文基本结构与写作体会
accumulation 2015-5-30 12:26
作者:黄合来 中南大学 交通运输工程学院 建议写作顺序: Method à Data à Results à Introduction à Discussion àConclusion à Abstract à References 论文各部分写作内容与注意事项 1. Abstract 标准摘要五句话,包含五个层次的内容: 1.1 Introduction: 为什么要进行本项研究,现状中本项研究的缺失或者做了但是存在不足; 1.2 Method:用什么方法做这个研究; 1.3 Data:用什么样的数据来验证你的方法; 1.4 Results:从研究中得出什么结论; 1.5 Implication:得出的结论对研究领域和实践有什么意义(理论与实践意义) 2. Introduction 2.1 Research background: 目的是证实该研究问题的重要性。如这一类问题造成的损失很严重,因此研究这一问题很重要。 2.2 Research problem: 在上述的这一大研究背景下,要做什么问题(或者方面)的研究;在上述的这一大研究背景下,这一研究可以在哪些方面解决现存的实际问题。 2.3 研究现状: 别人已经做了哪些东西,别人已经做过什么,发现了什么样的问题? 2.4 现存的研究有什么问题与不足: 别人有什么没有做过?为什么别人没有做得更好?并说明这些研究不足会带来严重后果。 2.5 本研究的目标(objective)和研究范围(scope): 本研究弥补这些问题中(这些没做过或者做过没做好的问题中)的哪些不足,采用什么研究方法去弥补不足。陈述本项研究的范围局限,并高度概括本论文研究结论。 2.6 文章结构:本论文的后续部分的基本内容架构。 3. Literature review 目的:Literature review 证明与说明两件事情:一是研究目标的设定是有意义的;二是你在本研究中采用的方法是可靠的、有效的 。 包括三个层次的内容: 3.1 对选题(你找到的研究问题)的justification。即对做过没做好或者没做过的研究问题,在这个研究领域,针对research problem而言,让读者明白本项研究是有意义的; 3.2 现存文献中对本文值得参考并可借鉴的东西(包括分析工具和成果); 3.3 非相关或者相邻研究领域值得借鉴的东西,侧重于可借鉴的研究方法。 3.2与3.3就确定了研究方法。 补充说明:注意introduction 2.5中的研究目的与研究范围的区别。Scope:如洪水发生后带来10个后续问题,本研究只考虑了6个关键问题。在Literature review 3.1与3.2中应该对scope进行说明和辨析,即说明我为什么留下这6个问题,去掉其他4个问题。 小结: 文献综述不是综述文献,而是去找到问题,不是为了综述而述。 并不在于对所有的相关文献作详尽描述和总结,应该是对相关研究现状的高度概括。至此,已经把研究问题、研究目标、研究方法明确了,并且对它们已经证明了、辩护了。 4. Method 此部分主要是对方法的描述。 该部分包含三个方面的内容: 4.1 研究策略(Research strategy) 总概研究过程。要做这样的一个研究采用一个什么样的研究策略:即所采用的研究思路。 4.2 数据采集的方法 建立在对研究问题深入认识的基础上,需要采集什么样的数据(变量)。这里的数据的概念是泛泛的,不是指具体的数据,而包括数据结构、变量(考虑的因素)。 4.3 数据的分析方法:如数学分析、逻辑分析(推理)、统计模型等数据分析方法。统计模型(模型的建立、模型校验(模型计算)、模型推断(在算的过程中所推断出的一些结果)、模型评价与对比) 。 5. Data 主要围绕data,对你所收集的数据做一个简要的描述,描述所收集的数据的特点。如从哪个机构得到一个数据,有什么样的特征、变量的期望值、方差、中位数、最大与最小值等。 包含两个层次的内容: 5.1 数据的来源、采集数据的时间周期、描述性的统计值 5.2 对所收集的数据的初步的处理方法。 6. Results 运用所采用的数据分析方法(即模型的建立、模型校验(模型计算)、模型推断(在算的过程中所推断出的一些结果)、模型评价与对比)得到的模型分析结果。应该着重对所得出的重要结果进行描述,不需要对所有的结果进行描述。 7. Discussion Discussion就是针对所得出的结果做横向或者纵向的对比和讨论,包括自己的结果之间的比较、自己结果与别人结果之间的比较;如果结果存在差异性,并对结果之间的差异性的成因作讨论分析。这样的差异性分析进一步加强了本研究的重要性。可以进一步地验证:对所提出的观点做数据方面的支持。 注意6和7的区别: Results强调清楚地陈述研究结果,受制于数据分析方法(模型建立、模型校验、模型推断、模型评价)的框架制约。而Discussion强调把结果打乱,提出最值得讨论和有意义的结果,是对本项研究所得出结果(results)高度抽象的产物 。 写discussion的三重境界:一是得出与人家相同的结果(意义不大);二是得出不同结果,但是不讨论差异性成因(需要升华);三是得出不同结果,并作差异性成因分析(较高水平)。 8. Conclusion 标题可以叫conclusion,但是实际包含四个内容: 8.1 Conclusion 8.1.1 研究过程:对研究过程的综述。在期刊论文中可以不写,但是在学位论文中一定要写。 8.1.2 该研究得出的结论:这个研究成果不是Results和Discussion的复述,而是对Results和Discussion的更进一步的抽象和概括。 8.2 Implication:从研究结论中所反映出来的对该研究领域的贡献以及启示,更侧重于启示。 8.3 Limitation:所得出的研究结果(该研究结果)的局限性。Limitation与scope是两回事,但两者相关,有差异性,其差异性体现在scope针对的是研究范围,在该研究范围内,你的研究结论是成立的,有效的,在scope内是绝对不能被人家挑毛病的;limitation要承认即使在scope内,由于数据的有限性和方法的不完备性所导致的局限性。总之,limitation的成因包括两个方面,一是scope所造成的limitation;另一方面是由于数据、方法所造成的limitation。 8.4 Future study 基于两个认识(一是对limitation的认识,二是对本文结论的implication的认识)所提出的后续研究课题。 9. References 就是一个字:consistent,文献列表和标注的一致性。应该与刊物格式要求一致,不同journal格式要求不一样。更为重要的是自己论文格式前后要一致,包括标点符号等。
个人分类: Reading|0 个评论
分享 "Housing" - Is It Really Recovering?
insight 2013-9-6 11:21
"Housing" - Is It Really Recovering? Details Written by Lance Roberts | Friday, July 26, 2013 Tweet in Share a.cmp_shareicontextlink { text-decoration: none; line-height: 20px;height: 20px; color: #3B5998; font-size: 11px; font-family: arial, sans-serif; padding:2px 4px 2px 20px; border:1px solid #CAD4E7; cursor: pointer; background:url(//static.ak.facebook.com/images/share/facebook_share_icon.gif?6:26981) no-repeat 1px 1px #ECEEF5; -webkit-border-radius: 3px; -moz-border-radius: 3px;} .cmp_shareicontextlink:hover { background:url(//static.ak.facebook.com/images/share/facebook_share_icon.gif?6:26981) no-repeat 1px 1px #ECEEF5 !important; border-color:#9dacce !important; color: #3B5998 !important;} Share There has been much hoped placed on the "housing recovery story" over the last couple of years as it relates to the economy. With each passing month all eyes have been glued to television screens, and headlines, as the latest estimations of housing starts, completions, new and existing home sales, etc. are trumpeted as a sign of a renewed housing cycle. This is no trivial matter as real estate is seen as a bedrock to economic strength as much as it is the sign of achievement of the "American Dream." It is true that in past housing was a large contributor to the strength of economic growth in the U.S. The same was true for automobile manufacturing. The building of homes and cars increased economic output and the multiplier effect through the economy was large. However, due to the shift in the makeup of the U.S. economy, housing is no longer the contributor to the economy it once was. The chart below shows the percentage that housing and automobile manufacturing contributes to U.S. gross domestic product. At less than 3% the impact of increases in residential construction is very small relative to exports, which comprises roughly 40% of corporate profits, and Equipment Software spending which has increased worker productivity and lowered costs. At The Margin The problem with all of the analysis each month on the transactional side of housing is that it only represents what is happening at the "margin." Housing is more than just the relatively few number of individuals, as compared to the total population, that are actively seeking to buy, rent or sell a home each month. In order to really understand what is happening in terms of "housing" we must analyze the "housing market" as a whole rather than what is just happening at the fringes. For this analysis we can use the data published by the U.S. Census Bureau which can be found here . Total Housing Units In an economy that is 70% driven by consumption it is grossly important that the working age population is, well, working. More importantly, as discussed in "Obama's Economic Report Card:" "Full-time, benefit providing, employment is the only type of employment that matters for the average American. Full-time employment allows for an increasing standard of living, household formation, and higher personal savings rates." To present some context for the following analysis we must first have some basis from which to work from. Our baseline for this analysis will be the number of total housing units which, as of Q1-2013, was 133,082,000 units. The chart below shows the historical progression of the seasonally adjusted number of housing units in the United States. As an example, the most recent report of "existing home sales" showed that 5,080,000 homes were sold on an annualized basis in June. Since this is an annualized number we must divide it by 12 months for the estimated seasonally adjusted number of sales in June which was 423,333 homes. This number of home sales represents just 0.3% of the total number of homes available. This is what I mean by "activity at the margin." When put into this frame of reference the "existing home sales" report doesn't seem nearly as exciting. Vacancy Rate Out of the total number of housing units some are vacant for a variety of reasons. They are second homes for some people that are only used occasionally. They are being held off market for one reason or another (foreclosure, short sell, etc.) , or they are for sale or rent. The chart below shows the total number of homes, as a percentage of the total number of housing units which are currently vacant. If a real housing recovery was underway the vacancy rate should be falling sharply rather than rising in the latest quarter and hovering only 0.5% below it's all-time peak levels. Owner Occupied Housing Another sign that a "real" housing recovery was underway would be an increase in actual home ownership. The chart below shows the number of owner occupied houses as a percentage of the total number of housing units available. Despite the Federal Reserve flooding the system with liquidity, suppressing interest rates and the current Administration's efforts to bailout banks and homeowners, owner occupied housing is at it lows. Home Ownership Th e simple reality is that there has really been very little actual recovery in housing, and as shown in the first chart above, which explains its weak contribution to economic growth. The chart of home ownership really shows the lack of recovery the best. At 65% the current level of home ownership is the lowest that it has been since the early 1980's. However, the recent reports of sales, starts, permits, and completions have all certainly improved in recent months. Those transactions must be showing up somewhere, right? REO To Rent While the Federal Reserve and the current Administration have tried a litany of programs to jump start the housing market nothing has worked as well as the "REO to Rent" program. With Fannie Mae/Freddie Mac, and the banks loaded with delinquent and vacant properties, the idea was to sell huge blocks of properties to institutional investors to be put out as rentals. This has worked very well. The chart below shows the number of homes that are renter occupied versus the seasonally adjusted home ownership rate. Do you see the potential problem here? Speculators have flooded the market with a majority of the properties being paid for in cash and then turned into rentals. As this activity drives the prices of homes higher, reduces inventory and increases rental rates - it prices out "first time homebuyers" who would become longer term home owners. The problem is that when the herd of speculative buyers turn into mass sellers - there will not be a large enough pool of qualified buyers to absorb the inventory which will lead to a sharp reversion in prices. Maybe this is why the Federal Reserve, and the FDIC, are looking to relax the regulation put in place after the last housing bubble which required banks to have "skin in the game." By removing that restriction banks can now go back to providing mortgages to unqualified buyers, pool them and sell them off to unwitting investors. Haven't we watched this movie before? While the surge in housing activity, which still remains at historically low levels as shown in the chart below, has certainly been welcome it should not be forgotten that it has taken massive bailouts, stimulus and financial supports to induce such relatively small amounts of activity. The mistake, however, as I addressed in "Housing Recovery, What Has Been Forgotten" is that: "There is no argument that housing has improved from the depths of the housing crash in 2010. However, while the housing market remains at very recessionary levels, recent analysis assumes that this has been a natural, and organic, recovery . Nothing could be further from the truth as analysts have somehow forgotten the trillions of dollars, and regulatory support, infused to generate that recovery. I recently penned an article showing the $30 trillion, and counting, that has been thrown at the economy, and financial system, to keep it afloat over the last 4 years. Of that, trillions of dollars have been directly focused at the housing markets including HAMP, HARP, mortgage write downs, delayed foreclosures, government backed settlements of 'fraud-closure' issues, debt forgiveness and direct buying of mortgage bonds by the Fed to drive refinancing and purchase rates lower. Of course, the Fed has also maintained its ZIRP (zero interest rate policy) during this same period with a pledge to keep it there until at least 2015. The point here is that while the housing market has recovered - the media should be asking ' Is that all the recovery there is?' More importantly, why are economists, and analysts, not asking the question of 'What happens to the housing market when the various support programs end?' With 30-year mortgage rates below 4% we should be in the middle of the next housing bubble - not crawling along a bottoming process." The housing recovery is ultimately a story of the "real" unemployment situation which still shows that roughly a quarter of the home buying cohort are unemployed and living at home with their parents. The remaining members of the home buying, household formation, contingent are employed but at lower ends of the pay scale and are choosing to rent due to budgetary considerations. As I stated previously the optimism over the housing recovery has gotten well ahead of the underlying fundamentals. While the belief was that the Government, and Fed's, interventions would ignite the housing market creating an self-perpetuating recovery in the economy - it did not turn out that way. Instead it led to a speculative rush into buying rental properties creating a temporary, and artificial, inventory suppression. The risks to the housing story remains high due to the impact of higher taxes, stagnant wage growth, re-defaults of the 6-million modifications and workouts and a slowdown of speculative investment due to reduced profit margins. While there are many hopes pinned on the housing recovery as a "driver" of economic growth in 2013 and beyond - the data suggests that it might be quite a bit of wishful thinking.
个人分类: real estate|21 次阅读|0 个评论
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