Interactive IR in OPAC Environments

Author(s):  
Iris Xie

Online catalogs are types of interactive computer systems; they can also be called “interactive catalogs” because a user interacts with the computer to find relevant information. The interaction is the main difference between Online Public Access Catalogs (OPACs) and other types of library catalogs (Hildreth, 1982; Matthews, 1985). Online catalogs are regarded as real-time interactive retrieval systems for libraries (Fayen, 1983). According to Peters (1991), the development of online catalogs can be characterized by three decades of development. In the 1960s, the development of online catalogs was led by the development of computer technology and the library community’s desire to increase efficiency in finding library materials. In the 1970s, commercial vendors started to replace large university libraries as the principal developers of computer-based library systems. In the 1980s, local libraries expand their control of the library catalog systems.

1986 ◽  
Vol 15 (2) ◽  
pp. 137-147
Author(s):  
Ben F. Eller ◽  
Alan S. Kaufman ◽  
James E. McLean

Rapid advances in the computer industry and the concomitant knowledge explosion have created a revolution in the information handling electronics industry. The continued proliferation of computer technology in the educational environment appears inevitable. There seems to be little doubt that recent advances in educational technology will have important consequences for educational institutions at all levels during the coming decades. Students, teachers, and administrators alike have already come to rely on bibliographic and statistical data bases, automated dictionaries, micrographic storage and retrieval systems, and specialized interactive cable and videotext systems for information access. Despite the impact of computer technology in the school environment, guidelines for planning and developing useable software for assessing cognitive abilities has warranted little attention in educational literature. This article suggests that computer-based support systems are now available which could be instrumental in solving the problems associated with cognitive assessment.


2006 ◽  
Vol 64 ◽  
pp. S88-S89
Author(s):  
J.A. Alava ◽  
C. Ezpeleta ◽  
I. Atutxa ◽  
C. Busto ◽  
E. Gómez ◽  
...  

2020 ◽  
pp. 1-19
Author(s):  
Fernando Cantú-Bazaldúa

World economic aggregates are compiled infrequently and released after considerable lags. There are, however, many potentially relevant series released in a timely manner and at a higher frequency that could provide significant information about the evolution of global aggregates. The challenge is then to extract the relevant information from this multitude of indicators and combine it to track the real-time evolution of the target variables. We develop a methodology based on dynamic factor models adapted for variables with heterogeneous frequencies, ragged ends and missing data. We apply this methodology to nowcast global trade in goods in goods and services. In addition to monitoring these variables in real time, this method can also be used to obtain short-term forecasts based on the most up-to-date values of the underlying indicators.


2020 ◽  
Vol 10 (24) ◽  
pp. 9154
Author(s):  
Paula Morella ◽  
María Pilar Lambán ◽  
Jesús Royo ◽  
Juan Carlos Sánchez ◽  
Jaime Latapia

The purpose of this work is to develop a new Key Performance Indicator (KPI) that can quantify the cost of Six Big Losses developed by Nakajima and implements it in a Cyber Physical System (CPS), achieving a real-time monitorization of the KPI. This paper follows the methodology explained below. A cost model has been used to accurately develop this indicator together with the Six Big Losses description. At the same time, the machine tool has been integrated into a CPS, enhancing the real-time data acquisition, using the Industry 4.0 technologies. Once the KPI has been defined, we have developed the software that can turn these real-time data into relevant information (using Python) through the calculation of our indicator. Finally, we have carried out a case of study showing our new KPI results and comparing them to other indicators related with the Six Big Losses but in different dimensions. As a result, our research quantifies economically the Six Big Losses, enhances the detection of the bigger ones to improve them, and enlightens the importance of paying attention to different dimensions, mainly, the productive, sustainable, and economic at the same time.


1981 ◽  
Author(s):  
David R. Pedrick ◽  
Richard S. McCurdy

Advances in computer technology continue to expand the every-day application of electronic calculation and programming. With everything from home computers to automotive diagnostic devices, hand-held Pong games, and calculator wristwatches now being big sellers, it is no surprise that computer-based marine instruments have increased in capability and popularity. This paper describes some current developments in electronics to evaluate the performance of sailing yachts, ranging from basic digital displays to full-blown shoreside computers.


Author(s):  
Bruce M. Durding ◽  
Curtis A. Becker ◽  
John D. Gould

Three experiments investigated how people organize data. Subjects were given sets of 15-20 words and asked to organize them on paper. Each word set had a pre-defined organization (hierarchy, network, lists, table) based on the semantic relations among the words. Experiment 1 showed that college students have all these organizational structures available for use. They organized most word sets on the basis of the semantic relations inherent in them. Whereas most subjects used “appropriate” organizations (those that most easily preserved the relations), a few subjects organized nearly all word sets into lists. Experiment 2 showed that subjects can efficiently fit the word sets into “skeletons” that were explicitly designed to maintain all the semantic relations among the words. Experiment 3 showed that subjects have difficulty in preserving the relations among the words when they were required to organize them into inappropriate structures. These results are evaluated relative to the use of computer-based information retrieval systems.


1981 ◽  
Vol 25 (5) ◽  
pp. 441-452 ◽  
Author(s):  
Thomas J. Harrison ◽  
Bruce W. Landeck ◽  
Hal K. St.Clair
Keyword(s):  

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