ecause a wide variation from article to article within a single journal.
使用这些期刊的问题是，大多数文章的目的是发布最新的发现和信息。因此，它可能导致在某些领域缺乏信息的有效性和可靠性。影响因子为期刊的排名、评估、分类和比较提供了定量工具。它是对期刊上的一篇文章在特定时期被引用的发生率的衡量。然而，影响因素只适用于期刊，而不适用于文章或研究人员。在评价个人时存在误用，因为在一本期刊中，文章之间的差异很大。
The limitations of secondary data, the fact that information was not designed particularly to meet this study’s need. The collection of data was not controlled the accuracy of the secondary data such as gathering, codes, and data analysis. In addition, it might be biased to support the vested interest of source.
二次数据的局限性，以及信息并非专门为满足本研究的需要而设计的事实。数据的收集没有控制二次数据的准确性，如收集、编码和数据分析。此外，支持来源的既得利益可能有失偏颇。
Based on secondary data, there are vital theories, framework, and recent information for this research. Nevertheless, the availability, the accuracy, the validity and the reliability are frequently involved all these data collection. The secondary data is insufficient for the conducting of this research. Hence, this research needs more primary supporting data to ensure that the result of research findings are valuable and reliable (Malhotra, 2007).
基于二次数据，本研究有重要的理论、框架和最新信息。然而，所有这些数据的收集往往涉及到可用性、准确性、有效性和可靠性。二级数据不足以进行这项研究。因此，这项研究需要更多的初步支持数据，以确保研究结果的价值和可靠性。
3.4 Population and Sampling 总体与抽样
As Cooper and Schindler(2000) asserted that population is the whole group of basics concerning what the researchers desire to shape out the results and finding. Thus, the chosen group of people has to be a good quality representative of the population (Grimm, 1993).
正如Cooper和Schindler所断言的那样，人口是研究人员想要形成结果和发现的全部基础。因此，所选择的人群必须是人口的优质代表。
3.5 Questionnaire design 问卷设计
Relevance and accuracy are the two fundamental criterions to be reached whether the questionnaire is to meet the research’s objectives. The questionnaire was designed systematically by made quite a few decisions as listed below (Zikmund 2000)
相关性和准确性是问卷能否达到研究目的的两个基本标准。调查问卷是由下列相当多的决定系统设计的
What should be asked?应该问什么？
How should each question be phrased?每个问题应该如何表述？
In what sequence should the question be arranged?这个问题应该按什么顺序排列？
What questionnaire layout will best serve the research objective?什么样的问卷布局最符合研究目标？
How should the questionnaire be pretested? Does the questionnaire need to revised?问卷应如何进行预测试？问卷需要修改吗？
For asking the respondents a specific question and gave them a particular alternative to help them make a quick decisions, close-ended question was used (Aaker and Day, 1990). In addition, the questionnaires were made in both Thai and English versions as mean to bring the participants have deeper and clearer understanding in the questions.
为了向受访者提出一个具体的问题，并为他们提供一个特定的选择，以帮助他们快速做出决定，使用了封闭式问题。此外，问卷采用泰语和英语两种版本，目的是让参与者对问题有更深入、更清晰的理解。
The questionnaire contains 10 questions and was classified into two main area (see in Appendix 1). As the instruction can support the participants to complete questionnaire, the research’s objective was noticeably described. An explanation of respondents voluntary and confident was provided by encoding information to numeric form. Finally, the most significant part is individual opinion, and therefore, this study can minimize biased response by stressed that there is no right or wrong answers. The questionnaire can be categorized into four sections as shown in table
问卷包含10个问题，分为两个主要领域（见附录1）。由于指导可以支持参与者完成问卷调查，因此显著地描述了研究的目标。最后，最重要的部分是个人意见，因此，本研究可以通过强调没有正确或错误的答案来最大限度地减少有偏见的回答。问卷可分为四个部分，如表所示
3.6 Pilot test and Alterations 中试和变更
Pilot testing or pre-testing is a self-administered questionnaire survey that is tested in full range of questions. The purpose is to identify problem in the questionnaire, eliminate research design fault, and to measure the practical, format and completion time (Ghauri and Gronhaug, 2002; Wilson, 2006). This testing can ensure that respondent understand all questions and questionnaires consist of full targeted information. It also can articulate whether the method chosen for the use in a research program is adequate to meet the research objectives (Ghauri and Gronhaug, 2003). It is important to prove questionnaire which is carrie
