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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, add「」 「 」 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 references, you should also cite the DOI if the article has one. If your citation guideline does not include DOIs, you may cite the DOI link.

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 ( 90 ) 〈TOP〉
  1. 台灣經濟研究院(2008)2009年台灣各產業景氣趨勢調查報告。財團法人台灣經濟研究院。
  2. 左峻德(2007)我國發展生質能源產業之可行性。農業生技產業季刊 9: 56-61。
  3. 吳春光(2008)普京的能源政策分析。政治科學論叢 35: 1-46。
  4. 林宗亮、方炳勳、黃冬梨、李政誠、吳奇生(2006)生質柴油之製程發展與應用。石油季刊 42(1): 49-59。
  5. 林瀚淵、謝志強、沈宗桓(2007)石油替代技術/產業發展研究趨勢。工業技術研究院產業經濟與趨勢研究中心。
Times Cited (1) 〈TOP〉
  1. 陳永川(2016)。臺灣使用生質柴油問題之探討-以雲林縣客運業為例。長榮大學高階管理碩士在職專班(EMBA)學位論文。2016。1-86。
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