Information: Information is a representation of the reflected attribute. Information is not the thing itself, but the messages, instructions, data and other contents issued by the thing. Everything, including nature and human society, will produce information.
Literature: a carrier that records human knowledge by means of words, figures, symbols, audio-visual images, etc., or is understood as knowledge solidified on a certain material carrier.
Retrieval: refers to the retrieval and acquisition of literature. According to the characteristics of document arrangement, searchers use retrieval tools to find out the required documents and use them by adopting certain methods, methods and steps.
Search engine: refers to a system that collects information on the Internet according to certain strategies and uses specific computer programs, organizes and processes the information, and provides retrieval services for users.
Retrieval strategy: based on the analysis of retrieval questions, determine the retrieval database, search terms, clarify the logical relationship between search terms, and scientifically arrange retrieval steps. On the basis of analyzing retrieval problems, retrieval strategy is to determine the logical relationship among retrieval database, retrieval words and retrieval steps scientifically.
Short Answer Questions
What are the three world-famous retrieval tools? Briefly describe the document types contained in each retrieval tool?
The world-famous three retrieval tools are:
SCI, namely "scientific citation index", is an important periodical abstract index database in the natural science field. It can retrieve important academic achievements information of mathematics, physics, chemistry, astronomy, biology, medicine, agricultural science, computer science, material science and other disciplines.
ISTP, namely "Index of Science and Technology Conference Proceedings", mainly includes internationally renowned science and technology conference documents. Its data include agriculture, environmental science, biochemistry, molecular biology, biotechnology, medicine, engineering, computer science, chemistry, physics and other disciplines.
Ei, the "engineering index", mainly contains papers in the field of engineering technology. The data covers nuclear technology, bioengineering, transportation, chemical and technological engineering, lighting and optical technology, agricultural engineering and food technology, computer and data processing, applied physics, electronics and communication, control engineering, civil engineering, mechanical engineering, material engineering, petroleum, aerospace, automobile engineering and other disciplines.
2. What is a retrieval tool and what conditions should a retrieval tool have?
Retrieval tools are tools that people use to store, report and find documents.
The retrieval tool shall meet the following conditions:
It is necessary to record the external characteristics and content characteristics of the literature in detail.
There must be a definite retrieval identifier.
All documents must be arranged in a systematic and scientific way according to the logo and become an organic whole.
Can provide a variety of retrieval methods.
What is a citation index? What is the meaning of citation index?
Citation index is an index to retrieve related documents by using the citation relationship of documents.
Citation index is mostly used for literature retrieval of complex topics such as emerging disciplines and interdisciplinary subjects. Through citation analysis, we can reveal the internal relations between some major scientific discoveries and predict the development direction of science and technology. The data obtained from citation analysis can also be used to evaluate the value of scientific and technological documents and the performance and level of scientific and technological personnel and scientific research institutions. Citation analysis technology provides a new method for the research of bibliometrics and scientometrics.
What are the characteristics of retrieval tools and the importance of using abstract retrieval tools?
It is a retrieval tool for concisely reporting the contents of documents, excluding supplements, explanations and comments to the original text.
It is the core of secondary literature and the main body of retrieval tools. It can profoundly reveal the contents of the literature, attract readers to read the original text, save the time and energy of scientific and technical personnel to read the literature, facilitate the decision on the selection of the original text, and provide important reference materials for writing review articles. At the same time, the abstract also describes some characteristics of the literature, such as the title, author and source of the literature.
What are the common methods of literature retrieval and how to apply them in practice?
Commonly used retrieval methods are:
(1) sequential retrieval method: a method of retrieving literature information from far to near in chronological order. Generally, it is used for full retrieval of major topics, the development history of various disciplines, emerging disciplines and other research topics.
(2) Backward search method: it is a method of searching for documents from near to far in reverse chronological order, with the purpose of obtaining the latest information of recently published documents. It is the most commonly used method for general researchers. When confirming whether an achievement is an innovation, it is also suitable to use the backward inquiry method.
(3) Spot check method: Focus on searching for a certain period of time for the topics in a certain discipline. This method is mostly used to write special investigation reports.
(4) Traceability method: It is a method to trace and find relevant documents by using the references or citations behind the mastered documents, also known as traceability method or citation traceability method. There are two specific inspection methods: one is to use the new references attached to the original document for tracing and searching; The other is to use the specially compiled citation index for retrospective retrieval.
(5) Segmented method: it is a method that uses the common method (tool method) and retrospective method alternately, also known as cyclic method or alternating method.
(6) Browsing method: browsing the contents of paper or electronic documents.
6. Network has become the first choice for obtaining information because of its convenience and data enjoyment. Does this mean that it can replace other information sources? Please express your understanding.
At present, network information sources can not completely replace other information sources. Although the network information sources are rich in information, content, levels and types, the distribution of network information is unorganized and scattered. Therefore, it is difficult to select, collect, manage and maintain network information resources. The information obtained lacks processing and organization, and is often only the accumulation of information, and its update and disappearance are often unpredictable. Therefore, network information sources have their limitations.
Third, search questions (choose two questions according to different disciplines, and write a detailed search process and search results with topics and sources according to the document search procedures. )
1, Research and Implementation of Computer Network Fault Management System
(1) analysis research topic
Unexpected interruption of computer network service is a common occurrence, which may have a great impact on society or production at some important moments. However, different from a single computer system, when a fault occurs in a large computer network, it is often difficult to determine the exact location of the fault simply and concretely, but it needs relevant technical support. Therefore, it is necessary to have a fault management system to manage all faults in the network scientifically, record the generation and related information of each fault, and finally determine and correct those faults to ensure that the network can provide continuous and reliable services. This topic is mainly to understand the research situation of this topic in recent years.
(2) formulate retrieval strategy
A. Select a search method
The retrieval method of this subject is mainly computer retrieval, and manual retrieval is combined with computer retrieval.
B. Select a retrieval tool
If you want to find the document "Research and Implementation of Computer Network Fault Management System", you must choose a suitable retrieval tool. According to the requirements of the subject and the collection of literature sources by retrieval tools, this topic chooses comprehensive retrieval tools and data. The following retrieval tools and databases are specially selected.
National newspaper index
China hownet periodical full-text database
Wanfang data resource system
Full-text database of China sci-tech periodicals
China Academic Conference Papers Database
China dissertations database
China patent database
(3) Select the retrieval method
In order to obtain the research situation at home and abroad in recent years, this topic chooses the method of combining forward search and backward search.
(4) Select the retrieval method
This topic can be searched by classification and topic.
A. Classification method
From the analysis of this topic, we can know that the subject classification of this topic belongs to building structure. According to the category setting of China Library Classification, you can choose the following classification numbers as search items:
G623.58 computer
TP393 computer network
B. Thematic approach
According to the analysis of the topic, you can choose the following keywords as the search entry:
Keywords: computer network; Network management; Network fault management system.
(5) constructing a search formula
In the computer retrieval system, the operation mode of each retrieval word is determined by the logical collocation relationship. Examination of this topic
Cable can choose the following logical operations to formulate retrieval strategies:
Network and fault management
Formal retrieval and results
If you want to find relevant domestic periodical papers, you can choose retrieval tools and databases such as national newspaper index, CNKI periodical full-text database, China sci-tech periodical full-text database and Wanfang data resource system digital periodical.
Network Fault Management System Based on Data Fusion and Data Mining/Liu, Ma Yuxiang, Hao/Microelectronics and Computer-2006,23 (6)
Research on Implementation Technology of Distributed Network Fault Management System/Zhang Qiang, Chen Lin, Gong Zhenghu/Computer Engineering and Science-2006,28 (5)
Network Fault Management System Based on Intelligent Mobile Agent Technology/Journal of Wang Ying/North China Electric Power University-2006,33 (3)
Design and Implementation of a Distributed Network Fault Management System/Yang Huachun, Zhao Huaixun/Computer Age -2006, (3)
Research and Implementation of Distributed Network Fault Management System/Cui Zheng/Modern Electronic Technology -2006, (2)
Research and Implementation of Network Fault Management System Based on Web/Jiang Lingyun, Wang Ruchuan/Photoelectric Technology Application -2004, 19 (5)
Get the original text
Obtain the original text according to the literature sources provided by literature retrieval. For the retrieval results of full-text database, the original text can be obtained directly.
2. Reform of higher education system
3. Gross national product
4. Research on magnetorheological transmission technology and devices.
(1) analysis research topic
This topic is mainly to understand the research situation of magnetorheological transmission technology and device in recent years.
(2) formulate retrieval strategy
A. Select a search method
The retrieval method of this subject is mainly computer retrieval, and manual retrieval is combined with computer retrieval.
B. Select a retrieval tool
If you want to find the document "Research on Magnetorheological Transmission Technology and Devices", you must choose a suitable retrieval tool. According to the requirements of the subject and the collection of literature sources by retrieval tools, this topic chooses comprehensive retrieval tools and data. The following retrieval tools and databases are specially selected.
National newspaper index
China hownet periodical full-text database
Wanfang data resource system
Full-text database of China sci-tech periodicals
China Academic Conference Papers Database
China dissertations database
China patent database
(3) Select the retrieval method
In order to obtain the research situation at home and abroad in recent years, this topic chooses the method of combining forward search and backward search.
(4) Select the retrieval method
This topic can be searched by classification and topic.
A. Classification method
From the analysis of this topic, we can know that the subject classification of this topic belongs to building structure. According to the category setting of China Library Classification, you can choose the following classification numbers as search items:
TH 13 mechanical parts and transmission devices
TM92 1 electric drive (electric drive)
B. Thematic approach
According to the analysis of the topic, you can choose the following keywords as the search entry:
Key words: magnetorheology; Transmission.
(5) constructing a search formula
In the computer retrieval system, the operation mode of each retrieval word is determined by the logical collocation relationship. Examination of this topic
Cable can choose the following logical operations to formulate retrieval strategies:
Magnetorheological and driving
Formal retrieval and results
If you want to find relevant domestic periodical papers, you can choose retrieval tools and databases such as national newspaper index, CNKI periodical full-text database, China sci-tech periodical full-text database and Wanfang data resource system digital periodical.
Experimental Research on the Performance of Magnetorheological Transmission Mechanism/Li Wenfeng, Huang/Mechanical Design and Research-2007,23 (2)
Design and Research of Magnetorheological Transmission Mechanism/Li Wenfeng, Huang/Mechanical Design-2006,23 (10).
Analysis and Test of the Transmission Torque of Magnetorheological Transmission Device/Ma Jiuhe, Lv Jiangang, Zhang Lei/Magnetic Materials and Devices-2006,33 (3)
Research on Cylindrical Magnetorheological Transmission Mechanism/Huang, Huang/Mechanical Technology (An)-2003,22 (4)
Get the original text
Obtain the original text according to the literature sources provided by literature retrieval. For the retrieval results of full-text database, the original text can be obtained directly.