作为读者没有必要区别这些。学校和科研部门认定一个人的学术研究，除了看发表总量外，还看质量。这个质量既包括期刊的档次，也包括一作和通讯的比例。

举个例子，如果按照字母排序，姓张的学者就会很吃亏，每次要排后面。但这并不是常态。如果要考核一个张姓学者的英文发表，要看

1、他是否每次作为最后一个作者？如果是，有多大比例是通讯作者。如果因为字母顺利作为最后一个作者，但同时有一定比例的通讯作者，那么可以认为他实际上对那些论文做了主要贡献。前提是在比较良好的学术环境中。

2、如果他有一定比例的发表没有按照字母顺利，且排在其他人之前，也可以认定他的贡献。

3、上述情况都以数量为基础。如果他只发过一篇，那也无从谈起。

要让别人了解你的学术水平和发表，数量和质量并重是很要紧的。如果一个人有源源不断质量稳定的发表，其实作者排名顺序就不再重要了。就算他的一作和通讯是别人“让渡”的，那也得有很强的人脉关系和圈内口碑，别人才肯让。这也就反过来证明了作者的能力和能量。

我举个例子，但不针对谁。国内有一位老师叫Zheng Siqi，按照排序，ta应该经常出现在最后的位置，但大家看看ta的发表列表。

[1] Cong Sun, Siqi Zheng, Rui Wang. Restricting Driving for Better Traffic and Clearer Skies: Did It Work in Beijing?. Transport Policy. 2014. Frothcoming.
[2] Siqi Zheng, Matthew Kahn, Weizeng Sun, Danglun Luo. Incentives for China’s Urban Mayors to Mitigate Pollution Externalities: The Role of the Central Government and Public Environmentalism. Regional Science and Urban Economics, 2013. （Published online.）
[3] Siqi zheng, Weizeng Sun, Rui Wang. Land Supply and Capitalization of Public Goods in Housing Prices: Evidence from Beijing. Journal of Regional Sciences. 2014. Forthcoming.
[4] Siqi Zheng, Jing Cao, Matthew E. Kahn, Cong Sun. Real Estate Valuation and Cross-Boundary Air Pollution Externalities: Evidence from Chinese Cities. Journal of Real Estate Finance and Economics. 2013. （published online）
[5] Siqi Zheng, Matthew E. Kahn. China’s Bullet Trains Facilitate Market Integration and Mitigate the Cost of Mega City Growth.. Proceedings of the National Academy of Sciences of the United States of America, 2013, 110(14): E1248-E1253.
[6] Siqi Zheng, Matthew E. Kahn. Understanding China's Urban Pollution Dynamics.. Journal of Economic Literature, 2013, 51(3): 731-772.
[7] Siqi Zheng, Matthew E. Kahn. Does Government Investment in Local Public Goods Spur Gentrification? Evidence from Beijing. Real Estate Economics. 2013, 41(1): 1-28.
[8] Siqi Zheng, Jing Wu, Matthew E. Kahn, Yongheng Deng. The Nascent Green Real Estate Market in Beijing. European Economic Review, 2012, 56(5): 974-984.
[9] Cindy Fan, Mingjie Sun and Siqi Zheng. Migration and split households: a comparison of sole, couple, and family migrants in Beijing, China.. Environment and Planning 43(A), 2011: 2164-2185.
[10] Siqi Zheng, Rui Wang, Edward L. Glaeser and Matthew E. Kahn. The Greenness of China: Household Carbon Emissions and Urban Development. Journal of Economic Geography 10(6), 2010:1-32.
[11] Siqi Zheng, Matthew E. Kahn and Hongyu Liu. Towards a System of Open Cities in China: Home Prices, FDI flows and Air Quality in 35 Major Cities. 2099. Regional Science and Urban Economics. 40, 2010: 1-10.
[12] Siqi Zheng, Fenjie Long, Cindy Fan and Yizhen Gu. Urban Villages in China: A 2008 Survey of Migrant Settlements in Beijing. Eurasian Geography and Economics, 50(4), 2009: 1-22.
[13] Siqi Zheng, Richard B. Peiser and Wenzhong Zhang. The Rise of External Economies in Beijing: Evidence from Intra-urban Wage Variation. Regional Science and Urban Economics, 49, 2009: 449-459.
[14] Siqi Zheng, Yuming Fu and Hongyu Liu. Demand for Urban Quality of Living in China: Evidence from Cross-City Land Rent Growth. Journal of Real Estate Finance and Economics, 38, 2009: 194-213.
[15] Siqi Zheng and Matthew E. Kahn. Land and Residential Property Markets in a Booming Economy: New Evidence from Beijing. Journal of Urban Economics, 63, 2008: 743-757.
[16] Siqi Zheng, Yuming Fu and Hongyu Liu. Housing-Choice Hindrances and Urban Spatial Structure: Evidence from Matched Location and Location-Preference Data in Chinese Cities Journal of Urban Economics, 60, 2006: 535-557. Journal of Urban Economics, 60, 2006:535-557.

[17]Bing Sun & Hongyu Liu & Siqi Zheng, 2004."A comparative study on the investment value of residential property and stocks,"International Journal of Strategic Property Management, Taylor & Francis Journals,Taylor & Francis Journals, vol. 8(2), pages 63-72, June.
[18] Hongyu Liu, Yun W. Park and Siqi Zheng. The Interaction of Housing Investment and Economic Growth in China. International Real Estate Review, 5(1), 2002: 40-60.

排在最后的主要ta刚刚出道的时候，也就是别人不可能“让”着时候。这两篇论文发表在2002和2004，也就是10年前（注：Zheng是2005年博士毕业的）。之后，ta的论文基本就只有2011年一次排在最后。

这些发表中最重量级的是JEL，Zheng是第一作者，Matthew Kahn在后面。比较好的期刊EER，JUE，JRS和RSUE，Zheng都是一作。这种情况下，不管实际贡献大小，我们都可以判断ta的能力。