• Korean Journal of Cognitive Science
• /
• v.34 no.1
• /
• pp.21-38
• /
• 2023

The present study was designed to investigate the effect of the difficulty level of retrieval practice and the association strength of categories and stimuli within categories on memory inhibition. Most of the studies have investigated whether inhibition was occurred by manipulating the degree of association strength, emotion value or physical characteristics of non-retrieval practice words within the retrieval practice category. Therefore, it was necessary to study how inhibition occurs according to the degree of difficulty of retrieval stimuli during retrieval practice. The difficulty of retrieval was manipulated into three levels: difficult condition, normal condition, and easy condition through the degree of presentation of consonants and vowels of words during retrieval learning. Additionally, the strength of association between categories and words within categories was manipulated. In previous studies, retrieval-induced forgetting occurred under conditions where the association strength between categories and words within the categories was strong. On the other hand, retrieval-induced forgetting did not occur under conditions where the association strength between categories and words within the categories was weak. The present study, if the inhibition process differs according to the difficulty of retrieval, the possibility of different results from previous studies was explored according to the difference in the strength of association with the category. As a result of the study, in the condition of strong association strength, retrieval-induced forgetting was observed under normal and difficult retrieval difficulty conditions. Whereas retrieval-induced forgetting was not observed under conditions of easy retrieval difficulty condition. In the condition of weak association strength, retrieval-induced forgetting tended to occur under difficult retrieval difficulty conditions. Whereas retrieval-induced forgetting was not observed under conditions of normal and easy retrieval difficulty condition. These results suggest that memory inhibition may appear differently depending on the difficulty of retrieval.

• The Journal of Korean Academic Society of Nursing Education
• /
• v.22 no.3
• /
• pp.274-282
• /
• 2016

Purpose: This study is aimed at identifying factors influencing attitudes of Evidence-Based Practice among nursing students. Methods: 202 nursing students were recruited from B city and G district. The questionnaires included critical thinking dispositions, information retrieval skills, knowledge and attitudes of Evidence-Based Practice, and characteristics. Data were analyzed by SPSS/Win 21.0 using descriptive statistics, t-test, ANOVA, Pearson correlation, and stepwise multiple regressions. Results: The average score of undergraduate nursing students for Evidence-Based Practice attitudes was $32.92{\pm}4.57$. Evidence-Based Practice attitudes had positive correlation with critical thinking disposition (r=.53, p<.001), information retrieval skills (r=.45, p<.001) and Evidence-Based Practice knowledge (r=.42, p<.001). Factors influencing Evidence-Based Practice attitudes were critical thinking dispositions (${\beta}=.45$) and Evidence-Based Practice knowledge (${\beta}=.30$). Total variance was explained about 35.3% (F=55.80, p<.001). Conclusion: These results show that teaching strategies that enhance critical thinking dispositions are recommended to improve Evidence-Based Practice attitudes among nursing students. Also, nursing education should include a regular Evidence-Based Practice curriculum to improve Evidence-Based Practice knowledge as is necessary for students to improve information retrieval skill. Reading nursing articles can help nursing students comprehend the up-to-data evidence of clinical practice.

• Korean Journal of Adult Nursing
• /
• v.24 no.6
• /
• pp.635-646
• /
• 2012

Purpose: The purpose of this study was to understand clinical nurses' level of information retrieval skill and its influence on evidence based practice (EBP). Methods: A cross-sectional design was used. Data were collected from a convenient sample of 492 nurses working at 5 university hospitals in Korea. The Data were analyzed using descriptive statistics, t-test, one-way ANOVA, and hierarchical multiple linear regression. Results: The mean score for information retrieval skill and EBP competency were respectively $2.81{\pm}0.64$ and $3.98{\pm}0.86$. Two step hierarchical regression analysis showed that attendance at academic conference (p = .036) and information retrieval skill (p<.001) were significant factors of EBP competency, information retrieval skill explained about 19% of total variance of EBP competency. Conclusion: Nurse need to increased fundamental information retrieval skill for EBP competency. Therefore, it is important to increase nurses' information retrieval skills by tailoring continuing EBP education modules. It would be also advisable to develop centralized systems for the internal dissemination of research findings for the use of nursing staff.

• Journal of the Korean Society for Library and Information Science
• /
• v.17
• /
• pp.49-83
• /
• 1989

A Full text retrieval system is a natural language document retrieval system in which the full text of all documents in a collection is stored on a computer so that every word in every sentence of every document can be located by the machine. This kind of IR System is recently becoming rapidly available online in the field of legal, newspaper, journal and reference book indexing. Increased research interest has been in this field. In this paper, research on full text databases and retrieval systems are reviewed, directions for research in this field are speculated, questions in the field that need answering are considered, and variables affecting online full text retrieval and various role that variables play in a research study are described. Two obvious research questions in full text retrieval have been how full text retrieval performs and how to improve the retrieval performance of full text databases. Research to improve the retrieval performance has been incorporated with ranking or weighting algorithms based on word occurrences, combined menu-driven and query-driven systems, and improvement of computer architectures and record structure for databases. Recent increase in the number of full text databases with various sizes, forms and subject matters, and recent development in computer architecture artificial intelligence, and videodisc technology promise new direction of its research and scholarly growth. Studies on the interrelationship between every elements of the full text retrieval situation and the relationship between each elements and retrieval performance may give a professional view in theory and practice of full text retrieval.

• Journal of Information Science Theory and Practice
• /
• v.3 no.1
• /
• pp.24-39
• /
• 2015

Pre-retrieval query formulation is an important step for identifying local text reuse. Local reuse with high obfuscation, paraphrasing, and translation poses a challenge of finding the reused text in a document. In this paper, three pre-retrieval query formulation strategies for heuristic retrieval in case of low obfuscated, high obfuscated, and translated text are studied. The strategies used are (a) Query formulation using proper nouns; (b) Query formulation using unique words (Hapax); and (c) Query formulation using most frequent words. Whereas in case of low and high obfuscation and simulated paraphrasing, keywords with Hapax proved to be slightly more efficient, initial results indicate that the simple strategy of query formulation using proper nouns gives promising results and may prove better in reducing the size of the corpus for post processing, for identifying local text reuse in case of obfuscated and translated text reuse.

• Journal of Information Science Theory and Practice
• /
• v.1 no.3
• /
• pp.12-32
• /
• 2013

The paper introduces the research area of interactive information retrieval (IIR) from a historical point of view. Further, the focus here is on evaluation, because much research in IR deals with IR evaluation methodology due to the core research interest in IR performance, system interaction and satisfaction with retrieved information. In order to position IIR evaluation, the Cranfield model and the series of tests that led to the Cranfield model are outlined. Three iconic user-oriented studies and projects that all have contributed to how IIR is perceived and understood today are presented: The MEDLARS test, the Book House fiction retrieval system, and the OKAPI project. On this basis the call for alternative IIR evaluation approaches motivated by the three revolutions (the cognitive, the relevance, and the interactive revolutions) put forward by Robertson & Hancock-Beaulieu (1992) is presented. As a response to this call the 'IIR evaluation model' by Borlund (e.g., 2003a) is introduced. The objective of the IIR evaluation model is to facilitate IIR evaluation as close as possible to actual information searching and IR processes, though still in a relatively controlled evaluation environment, in which the test instrument of a simulated work task situation plays a central part.

• Journal of Information Science Theory and Practice
• /
• v.3 no.4
• /
• pp.19-34
• /
• 2015

Evaluation of retrieval systems is mostly limited to laboratory settings and rarely considers changes of performance over time. This article presents an evaluation of retrieval systems for internal Web site search systems between the years 2006 and 2011. A holistic evaluation methodology for real Web sites was developed which includes tests for functionality, search quality, and user interaction. Among other sites, one set of 20 Web site search systems was evaluated three times in different years and no substantial improvement could be shown. It is surprising that the communication between site and user still leads to very poor results in many cases. Overall, the quality of these search systems could be improved, and several areas for improvement are apparent from our evaluation. For a comparison, Google’s site search function was also tested with the same tasks.

• Journal of the Korean Operations Research and Management Science Society
• /
• v.23 no.3
• /
• pp.91-108
• /
• 1998

Automated Storage and Retrieval Systems (AS/RSs) are an important facility for modern material management. The expected benefits of these capital-intensive facilities are gained when their control policies and their physical design parameters are determined simultaneously. In this paper we present several analytical models that capture the impact of the storage assignment policy and of the rack design on the expected storage and retrieval times. Sequential and interleaved service modes are considered for sequencing the storage and retrieval requests. We further investigate the impact of the rack structure on the relative performance of the following storage assignment policies : closest open location (random), full turnover-based policy, and class-based. Our analysis clearly indicates that significant savings in crane travel time are realized when implementing full turnover-based policy, rather than random. These savings become more and more pronounced as the profile of the storage racks approaches the square-in-time shape. Furthermore, it is shown that a class-based policy, with a small number of storage classes, will capture most of these savings and be easier to manage in practice.

• Journal of Information Management
• /
• v.36 no.4
• /
• pp.91-115
• /
• 2005

While the amount of information exchanged through internet has dramatically increased recently, certain inefficiencies still exist with regard to the storage, distribution, and retrieval of information. As a means of improving efficiency in accessing information, many search portals provide directory services to present organized guidance to information, based on the classification schemes. This study examines the classification activities practiced by the major search portals in Korea and makes some suggestions to improve the quality of directory services.

• Journal of the Korean Society for Library and Information Science
• /
• v.19
• /
• pp.113-149
• /
• 1990

The RAK has in general adopted the provisions of the paris principles to a far greater extent than many other cataloguing codes. And the analyses confirm that the determination of the main entries in German cataloging rules is a rather complex process and one which can result in inconsistent, arbitrary decisions. And the selection of the main entry requires a considerable amount of decision making which is time-consuming and costly. From the point of view of computers, all entries are equal as points of retrieval. In light of the above considerations the most important recommendation to be made is that the main entry principle be abandoned from cataloging theory and practice and be replaced by the title entry. It would eliminate the need for personal judgments required by the present rule. In so doing, it would bring uniformity and Standardization to cataloging practice. Use of the title entry would reduce the time and effort spent on the selection of the main entry which serves no important purpose in the catalog. Therefore title entry is more developed finding device than author entry in direct approach for document retrieval.