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Case study is a valuable method of research, with its distinctive characteristics that make ideal for many types of investigations. It can also be used in combination with other research methods. Its reliability make it become as a more widely used methodology, its features can make research be in-depth, and better understood by potential researchers. In case studies, this could be done and needed by using multiple sources of https://www.51lunwen.org/methodology/data. Serve as the case studies that emphasize detailed contextual analysis on a number of events or conditions and their relationships. So as to make the research be in full range and in-depth, while possessed power of logic and strong accuracy, as well as to lay the basis for further research and analysis in multidimensional

Case study research means contains single and multiple case studies. It can be either single or multiple-case designs depends on quantitative evidence, relies on multiple sources of evidence and benefits framework 留学生用英语with the prior development of theoretical propositions, and they can be based on any mix of quantitative and qualitative evidence. Case study provides a systematic way of looking at events, collecting data, providing statistical framework, analyzing information, and reporting the results. As a result the researcher could gain a sharpened understanding of why the instance happened as it did. Case studies lend to both generating and proving the hypotheses 加reference…………………………………….
Single cases are used to confirm or challenge a theory, or to represent a unique or extreme case indicated by Yin, 1994. Single-case studies are also ideal for revelatory cases where an observer may have access to a phenomenon that was previously inaccessible. Single-case designs require careful investigation to avoid misrepresentation and to maximize the investigator's access to the evidence. These studies can be holistic or embedded with the latter occurring when the same case study involves more than one unit of analysis. Multiple-case studies follow multiple logical relations. Each individual case study consists of a "whole" study, in which facts are gathered from various sources and conclusions drawn on those facts.
Explanatory cases are suitable for doing causal studies. In very complex and multivariate cases, the analysis can make use of pattern-matching techniques. Yin and Moore (1988) conducted a study to examine the reason why some research findings get into practical use. They used a funded research project as the unit of analysis, where the topic was constant but the project varied. The utilization outcomes were explained by three rival theories: a knowledge-driven theory, a problem-solving theory, and a social-interaction theory.

2. Revenue Recognition(利润获取的衡量标准)
Sales from the majority of the company are recognized when the significant risks and rewards of ownership have transferred to the buyer, continuing managerial involvement usually associated with ownership and effective control have ceased, the amount of revenue can be measured reliably, it is probable that economic benefits associated with the transaction will flow to the company and the costs incurred or to be incurred in respect of the transaction can be measured reliably. An immaterial part of the revenue from products sold through distribution channels is recognized when the reseller or distr本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。