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Search Symbol (Half-width) Description of Search Symbols
Space "AND" indicates the intertwining of key terms used in a search
Double Quotation Marks ("") ( " " ) Double quotation marks indicate the beginning and end of a phrase, and the search will only include terms that appear in the same order of those within the quotations. Example: "image process" : " image process "
? Indicates a variable letter. Entering two ? will indicate two variable letters, and so on. Example: "Appl?", search results will yield apple, apply… e , appl y … ( (often used to English word searches) )
* Indicates an unlimited number of variable letters to follow, from 1~n. Example: Enter "appl*", search results will yield apple, apples, apply, applied, application…(often used in English word searches) e , appl es , appl y , appl ied , appl ication … ( (often used to English word searches) )

Boolean logic combinations of key words is a skill used to expand or refine search parameters.
(1) AND (1) AND: Refines search parameters
(2) OR (2) OR: Expands search parameters (3) NOT: Excludes irrelevant parameters


DOI stands for Digital Object Identifier ( D igital O bject I dentifier ) ,
and is the unique identifier for objects on the internet. It can be used to create persistent link and to cite articles.

Using DOI as a persistent link

To create a persistent link 「 」 before a DOI.
For instance, if the DOI of an article is 10.5297/ser.1201.002 , you can link persistently to the article by entering the following link in your browser: 10.5297/ser.1201.002
The DOI link will always direct you to the most updated article page no matter how the publisher changes the document's position, avoiding errors when engaging in important research.

Cite a document with DOI

When citing a document with a DOI, the DOI permanent URL should always be presented (if using APA or Chicago format, present number). If using a citation format that does not specify DOI, the DOI permanent URL should still be presented as a priority.

DOIs allow accurate citations, improve academic contents connections, and allow users to gain better experience across different platforms. Currently, there are more than 70 million DOIs registered for academic contents. If you want to understand more about DOI, please visit airiti DOI ) 。

Abstract 〈TOP〉
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Reference ( 23 ) 〈TOP〉
  1. 莊牧頤(2012),「產業的群聚現象對廠商生產力之影響:中國電子資訊製造業實證」,國立清華大學經濟系碩士論文。
  2. 詹力宇、林惠玲(2013),「產業地理與市場集中度之相關性:臺灣製造業之分析」,《經濟研究》,49:2,pp.167-205
  3. 蔡侑呈(2012),「產業群聚對中國汽車製造業經營績效之影響」,國立臺灣大學國家發展研究所碩士論文。
  4. 劉訓華(2012),「產業聚集與廠商生產力之關係:以台灣電子業為例」,國立臺灣大學經濟學系碩士論文。
  5. Audretsch, David B. and Michael P. Feldman (1996), “R&D Spillovers and the Geography of Innovation and Production,” The American Economic Review, 86(3), pp. 630-640.
Times Cited (1) 〈TOP〉
  1. 王翠華(2018)。產業聚集與廠商的生產力及研發:以臺灣工具機產業為例。國立臺灣大學經濟學系學位論文。2018。1-66。 
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