SCI (science citation index) and EI (engineering index), ISTP (technology conference record index) is the world famous three major science and technology literature retrieval system, is internationally recognized as the scientific statistics and scientific evaluation of the main retrieval tools, among them with SCI is the most important. 
The Science Citation Index (Science Citation Index, SCI) is by the American institute for scientific information (ISI), founded in 1961, the publication of the Citation database, the cover of life Science, clinical medicine, physical chemistry, agriculture, biology, veterinary medicine, engineering and technical aspects of integrated retrieval periodicals, especially could reflect the academic level of Science research, are the three major international retrieval systems in one of the most famous, in which life Science and medicine, chemistry, physics, the biggest percentage, included the range is the important international journals, especially its Citation Index showed a unique scientific reference value, occupies an important position in academia. In many countries and regions by SCI and cited papers for evaluating the academic level of an important indicator. From the strict offprint principles of SCI and strict expert evaluation system, it has a certain objectivity, malathion reflects the level and quality of paper. According to the SCI and cited situation, can from a side reflects the academic level of development. Especially the annual SCI papers became a judge a school scientific research level of an important standard. SCI in the journal to discuss (Current Content) as a data source, the science database has more than five thousand kinds of journals, including life science series included 1350 species; Engineering and computer technology series included 1030 species; Clinical medicine series 990 species; Agricultural, biological, environmental science series included 950 species; Physical, chemical and earth science series included 900 journals. All versions included range is not the same: 
The print (SCI) bimonthly 3500 kinds 
Online version (SciSearch) 5600 kinds of weekly update 
Cd-rom version update (with abstract) (SCICDE) month 3500 (to print) 
Online (SCIExpanded) weeks update 5600 (with the online version) 
Part of scientific research workers will SCI nicknamed the STUPID CHINESE IDEA. 
First introduces SCI in the late 1980 s by nanjing university scientific research evaluation system. Mainly based on two reasons, one is in transition at that time, domestic academia exist all kinds of abuses, the lack of an objective evaluation criteria; Second, some professional domestic experts seldom, the international peer-reviewed general unrealistic. 
"SCI has become a measure of domestic universities, research institutions and academic level of scientific workers is the most important or even the only measure of". 
However, SCI was a powerful tool for information retrieval. It is different from conventional way by subject or classification retrieval literature practice, set up a unique "citation index", but is a piece of literature as a search term, by including the references cited and tracking its published by reference to grasp the situation of the research subject, to quickly find the relevant research literature. "The check the old, the check the new, check ever deeper" this is the purpose of the science citation index set up. SCI is an objective evaluation tool, but it can be evaluated as the work of an Angle, not on behalf of all the evaluation objects. 
ISTP 
The meeting record of science and technology Index (Index to Scientific & Technical Proceedings, ISTP) was founded in 1978, published by the American institute for Scientific information editor. The index includes life science, physics and chemistry science, agriculture, biology and environmental science, engineering and applied science disciplines such as meeting documents, including general conferences, forums, seminars, workshops, conference, etc. Which accounted for about 35% of engineering and applied science literature, other related to basic disciplines is the same as the SCI. 
ISTP included papers with important international academic conference on the science and technology personnel to participate in as many related or submission, the papers published. China's scientific and technological personnel in a foreign country at the international conference was collected 64.44% of the total number of papers of paper. 
In ISTP, EI, SCI the three retrieval system, the SCI is the most can reflect the basic subject research level and the quality of paper, the retrieval system of sci-tech periodicals is comprehensive, it is the essence of concentrated disciplines high quality excellent papers and the retrieval system has become the centre of the world's technology closely and focus. ISTP, EI, the two retrieval system evaluation of scientific papers and the quality of sci-tech periodicals standards compared with looser. 
EI 
The Engineering Index (The Engineering Index, EI) was founded in 1884, is The Engineering information company (Engineering informationInc.) published The famous Engineering technology integrated retrieval tools. EI published 1 times a month, abstract from 13000 to 13000; Attached to each subject indexing and the author indexes; Also published annually in volumes and annual indexes, the annual index also increased the author unit index. Print form with print (form) of periodicals, electronic (tape) and microfilm. EI choose engineering technology in the world dozens of countries and regions in 15 languages more than 3500 kinds of journals and more than 1000 kinds of conference proceedings, report of science and technology, standard, books and other publications. Article 160000 the amount reported in literature. Collected literature almost involve engineering fields. For example: power, electrical, electronics, automatic control, mining and metallurgy, metal processing, machinery manufacturing, construction, water conservancy, etc. It has a strong comprehensive, wide source, geographic coverage, reported large coverage, high quality, strong authority, etc. 
EI collected papers it is divided into two class 
1. EI Compendex indexing abstract (also known as the core data) 
It included paper citations, summary, and the deep processing of subject headings, classification, indexing. Is there any subject headings and classification number is to determine whether a paper, marked the official included only by EI. 
2. EI Page One record (also known as non-core data) 
Mainly in the form of citations to report for duty. Also with the some, but not for further processing, there is no subject headings and classification number. So the Page One with abstract things doesn't necessarily formally enter the EI. 
EI to the manuscript content and academic level of requirements. EI papers not included pure theory. 
SSCI 
"Social Science Citation Index" (Social Science Citation Index, referred to as "the SSCI, http://sunweb.isinet.com) for the American institute for scientific information to establish a comprehensive Social Science literature database, involving economy, law, management, area studies, sociology, psychology, information Science, etc. Collected more than 3000 kinds of 56 subjects in the field of social science authoritative academic journal articles. 
INSPEC 
ElectronicsTechnology INSPEC (Ination Service in Physics, and Computer and Control) is Physics, electrical engineering, electronics, Computer science and information technology in the field of authoritative abstract index database, by the institute of electrical engineers (IEE) editor provides 9.5 million science and technology papers from publications all over the world, including more than 3700 kinds of journals of science and technology, as well as 2000 books, reports, and a variety of conference proceedings. And INSPEC a printed copy of the corresponding retrieval periodicals is SA (Science of), including the following three points: 
A: PhysicalAbstracts 
B: Electricaland Electronics of 
C: Computerand Control of 
Disciplines covered include: atomic physics and molecular physics, mathematics and mathematical physics, condensed matter physics, gas, fluid, plasma, optics and lasers, acoustics, electricity system, thermodynamics, magnetism, biophysics and biotechnology, atomic physics, fundamental particles, nuclear physics, manufacturing and measuring instrument, semiconductor physics, astronomy and atmospheric physics, materials science, water science and oceanography, environmental science, superconductor, circuit, circuit element, and circuit design, telecommunications, superconductor, electronic optics and laser, power systems, microelectronics, medical electronics, computer science, control system and theory, artificial intelligence, software engineering, office automation, robot, information science. 
SCIE 
SCIE is Thomson corporation in SCI abstract version of the original source of publication on the basis of selection of the online edition of the magazine is formed by the other part. 
SCI and SCIE difference: SCI and SCIE were science citation index (SCI Expanded) and science citation index Expanded edition (online), mainly included the natural sciences, engineering and technical field of the most influential journals, the former is more than 3600 kinds of collected periodicals, the latter more than 6000 kinds of collected periodicals, disciplines covered more than 150 fields. There are two ways to find SCI publication source: (1) to access the ISI company web site: 
SCI is equivalent to EI core, and equivalent to EI non-core by SCIE. While you may occasionally find SCIE impact factor is higher than that of SCI, but the impact value is not SCI. ISI through its strict offprint standards and evaluation procedures selected publication source, and a slight increase or decrease in a year, to achieve the collection of literature to universal coverage of the world's most important and most influential research results. Do better SCIE magazine could be SCI journals, and do less SCI journals may become a SCIE, even give up by SCI and SCIE. 
The IEEE 
Instituteof Electrical and Electronics Engineers (IEEE), the American association of Electrical and Electronics Engineers. The American association of Electrical and Electronics Engineers (IEEE) is an international electronic technology and information science and engineer association, is one of the world's largest professional organization (membership), has 175 members from 175 countries (to 2005). On January 1, 1963 by the American association of radio engineers (IRE (, founded in 1912) and the American association of electrical engineers (AIEE, founded in 1884) merger, it has a regional organization structure and technology complement each other, the technology center location or as organizational units (such as the IEEE branch in Philadelphia and IEEE computer society]]). It manages the recommended rules and implementation plan of decentralized organization (such as the IEEE - USA clear service in the United States, a member of the professionals and the public). Headquarters in New York City. IEEE in more than 150 countries, it has more than 300 local chapters. Through diversification, member of the organization in space, computers, telecommunications, biomedical, electric power and consumer electronics products are mainly in the field of authority. Professional it has 35 professional society and two federation. The IEEE published a variety of magazines, journals, books, and organize more than 300 professional meeting every year. Of the definition of the IEEE standards in the industry has a great impact. The IEEE (read do eye - triple - ee, I - 3 e). 
The principal activities of the society is at a meeting, publishing journals, setting standards, continuing education, award, certification (Accreditation). The IEEE held every year more than 300 academic conference, attended by 350000 people. Many of the IEEE conference is very influential in the world, some large, to 4-50000. 
IEEE made 30% of electrical and electronic and computer science the world literature, it also has established more than 900 existing industry standards. It also launched or jointly hold more than 300 times a year. International conference on technology. IEEE consists of 37 association also organized the relevant field of expertise, local organizations regularly every year for a meeting of more than 300 times. IEEE extensive peer review journal, is a major international standards bodies (900 current standards, 700 research and development in the standard). 
"IEEE journal (monthly), the IEEE journal (monthly)," IEEE summary "(monthly)," IEEE guide "(published annually); There are more than 800 have been awarded or are various standards; Each major points learn also published various journals and conference proceedings. 
EEE published more than 70 kinds of journals, each branch has its own professional publications. Is said to be the group's annual number of papers published works accounted for 30% of the world's supply of the field was published. In addition to the "Spectrum" is each member of the beginning, other members can according to their own needs to subscribe to journal magazine. 
IEEE besides publishing journal on a regular basis, also published a large number of papers, books and standard. The publication of academic and technical level is world class. IEEE is devoted editor published for students to read the Potentials and for general engineering and technical personnel to read Today 's Engineers. 
IEEE has all kinds of continuing education teaching materials, including all kinds of audio and video products, all kinds of short training courses and workshops, before large-scale academic conference, held Tutorial with a nature of continuing education, etc. 
IEEE authorized by the international organization for standardization for the may formulate standards organization, has special standards committee, 30000 volunteers participate in the formulation of the standard research and, formulated and revised each year more than 800 technical standards. 
The IEEE standards content include: electrical and electronic equipment, test method, the original device, symbols, definition and testing method, etc. 
CSCD 
Founded by literature information center, Chinese academy of sciences, the Chinese Science Citation Database (the Chinese Science Citation Database CSCD). It is to analyze the overall situation of the activities of science and technology, domestic help science decision-making departments to scientifically evaluate the macro level and micro performance of scientific activities in our country, to help scientists individuals objectively understand their academic influence of the effective tools. 
Chinese science citation database from 2013 to 2014, included the source journals 1141 species, 125 China published in English journals, 1016 kinds of Chinese periodicals. Chinese science citation database source journals can be divided into core library and the extension libraries, including 780 kinds of core library (in the remarks column in the table for C). 
The Chinese science citation database source journal selection once every two years. Each selected adopt the combination of quantitative and qualitative methods, quantitative data from the Chinese science citation database, the qualitative evaluation by hiring domestic experts in the field of interdisciplinary journal for review. Qualitative and quantitative comprehensive evaluation results form the Chinese science citation database source journals. 
CSSCI 
English all referred to as the "Chinese Social Sciences Citation Index", abbreviated as CSSCI. It is by nanjing university of Chinese academy of social sciences research evaluation center developed database, used to retrieve Chinese papers included in the field of social science and literature cited. 
"Chinese social science citation index (CSSCI) by nanjing university of Chinese academy of social sciences research evaluation center development, is the national key subject research projects, the ministry of education. CSSCI follow the rules of literature metrology, adopt combination of quantitative and qualitative evaluation methods from the national more than 2700 kinds of Chinese humanities and social science academic journals in the selection of a strong academic, the journal editorial standard as the source journals. Now collected including law, management, economics, history, political science, such as 25 major categories of more than 500 academic journals, source nearly more than 100 references, citations with 600 references. 
At present, the ministry of education has the CSSCI data as the national assessment of university institutions and base, achievement awards, project establishment, personnel training and so on aspects of the important evaluation indexes. CSSCI database has been admitted to Peking University, tsinghua university, renmin university of China, wuhan university, jilin university, shandong university, nanjing university, such as more than 100 units to buy used, and the CSSCI as regional institutions, academic, subject, title, project, achievement evaluation, and the important basis of evaluation. 
As China's main social science literature information statistics and evaluation of important tool, CSSCI offers a variety of information query, retrieval way, can provide the domestic social science research for social science researchers frontier information and the development of the discipline of history; For managers to provide areas, institutions, social science disciplines, scholars and various types of statistical analysis of data, to develop scientific research and development planning, scientific and rational decision-making reference for the scientific research and policy. At present, the CSSCI database of nanjing university has to carry out the service to the society, services have online package (package library institutions in a limited amount of IP address on any computer, within the scope of any time period using the CSSCI database), online query (the package library users through the network query CSSCI database); Entrust the query (user trust nanjing university to query the CSSCI database, issue the query report), mobile query (China mobile phone users by sending mobile phone short message form to query the CSSCI database), the details can be log in nanjing university, Chinese academy of social sciences research evaluation center web site (www.cssci.com.cn).