• Communications of Mathematical Education
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• v.22 no.2
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• pp.229-252
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• 2008

The purpose of this research was to make fair assessment methods which took into account characteristics of mathematically underachievers. The researchers devised an descriptive tests and interviews and applied them to the mathematics underachievers who could not reveal their achievements in the traditional assessment and then analyzed their cognitive and affective characteristics in the alternative assessments. After selecting three students by the normal assessment made of simple subjective and multiple choice questions, the cognitive and affective characteristics found in the general assessment were reflected to the descriptive tests and interviews. The descriptive tests and interviews are comprised of descriptive narrations and informal interview questions. After the assessment, the teacher and students gave feedbacks one another. All the assessment activities were recorded by a camcorder to analyze cognitive and affective characteristics of the children. Throughout the research, the following conclusions were made. The mathematics underachievers showed the characteristics which didn't appeared in the normal assessment. They showed normal abilities of problem solving and communication In the cognitive area. Also they brought in positive result in most parts in the affective area. However, the student B displayed considerable ability of mathematical thinking that is over the average level of mathematical underachievers. This implies that we can definite the mathematical underachievers differently when we use the detailed and relief assessment method instead of the traditional assessment. On the other hand, one student tended to depend on the teacher and another student overheard what the others talk during the study. This defect should be complemented by the further studies about assessment method for the mathematical underachievers. Also appropriate assessment methods should be made for applying to the various mathematical underachievers. Many studies have been concentrated on the learning for mathematical underachievers but there is little concern about the assessment for the mathematical underachievers. However it is the fundamental way to reduce the number of mathematics underachievers that we construct consistent learning methods and assessments for the mathematical underachievers.

• Journal of the Korea Convergence Society
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• v.11 no.3
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• pp.263-269
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• 2020

The purpose of this study was to determine the factors for professional consciousness of caregivers and provide basic data that could help develop a intervention to promote their professional consciousness. For this descriptive research, a survey was conducted to collect data from 110 caregivers in G City for six weeks in September 2019. Descriptive statistics, t-test, ANOVA, Pearson's correlation coefficient, and multiple regression were used. They scored 3.41 for calling and 3.23 for Communication Competence and 4.12 for job satisfaction. Professional consciousness was positively correlated with job satisfaction (r=.636, p<.001) and calling (r=.356, p<.001) and Communication Competence (r=.378 p<.001). job satisfaction (B=.329, p<.001), followed by Communication Competence (B=.216, p<.001) and calling(B=.165, p=.002), had the strongest impact on professional consciousness, accounting for 57.5% in general. It is necessary to give job satisfaction reinforcement training constantly in long-term care givers. It is also necessary to conduct education and research that can promote professional consciousness.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.17 no.9
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• pp.939-950
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• 1992

The performance of common spreading code scheme employing multiple-capture receiver is compared to that of transmitter-oriented (T/O) code division multiple access (CDMA) scheme in view of the possibility of collision-free transmissions and the effect of secondary multiple-access interference. For performance comparisons, secondary multiple-access interference is characterized for the common code scheme and the T/O CDMA scheme that assures perfectly collision-free transmissions. Throughput performance is then evaluated for these two schemes with direct-sequence spread-spectrum/differential-phase-shift-keying (DS-SS/DPSK) data modulation and forward-error-control coding (BCH codes) in the presence of an additive white Gaussian noise (AWGN). It is shown that when the number of radios is relatively large, the maximum normalized throughput is greater for the common code scheme than for the T/O CDMA scheme at a moderate signal-to-noise ration(SNR).

• The Journal of Korean Institute of Communications and Information Sciences
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• v.41 no.9
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• pp.1120-1131
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• 2016

In this paper, we propose a smoker recognition algorithm, detecting smokers in a video sequence in order to prevent fire accidents. We use description-based method in hierarchical approaches to recognize smoker's activity, the algorithm consists of background subtraction, object detection, event search, event judgement. Background subtraction generates slow-motion and fast-motion foreground image from input image using Gaussian mixture model with two different learning-rate. Then, it extracts object locations in the slow-motion image using chain-rule based contour detection. For each object, face is detected by using Haar-like feature and smoke is detected by reflecting frequency and direction of smoke in fast-motion foreground. Hand movements are detected by motion estimation. The algorithm examines the features in a certain interval and infers that whether the object is a smoker. It robustly can detect a smoker among different objects while achieving real-time performance.

• Journal of Elementary Mathematics Education in Korea
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• v.24 no.2
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• pp.231-257
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• 2020

As the main mathematical concepts are presented and expressed in various ways through textbooks during the teaching and learning process, it is necessary to look at the representations used in elementary math textbooks to find effective guidance. This study analyzed sentences used in the definition of mathematical terms and unit assessments of current elementary mathematics textbooks according to word depth (Yngve, 1960) from a syntactic perspective. As a result of the analysis, it could be seen that the sentences in textbook were generally concise, the word depth was lower, and the sentence structure and form were different depending on the individual characteristics of each term. Also, the sentences in the lower grade textbooks were more easily constructed, and the sentences of the term definition were more complex than the sentences of the unit assessments. Efforts should be made to help learners learn mathematical concepts, such as clarifying sentences in textbooks, presenting visual materials together, and providing additional explanations to suit the level of individual learners.

• The Journal of the Korea Contents Association
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• v.13 no.9
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• pp.334-343
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• 2013

This study was conducted to examine the readiness for death and death anxiety among hospitalized cancer patients. A convenience sample of 183 cancer patients admitted to four hospitals in Korea was recruited for this study. Data were collected in 2010. Collected data were analyzed with descriptive statistics, independent t-test, one-way ANOVA, and Pearson's correlation coefficient. The mean scores of readiness for death and death anxiety were 1.99(${\pm}0.69$) and 2.21(${\pm}0.59$) out of 4, respectively. 'Psychological readiness' showed the highest mean score among the death anxiety domains, and 'dying process' had the highest mean score among the death anxiety domains. No statistically significant correlation was found between readiness for death and death anxiety. Readiness for death was statistically significantly different according to age, afterlife beliefs, stage of cancer, duration of disease, and number of symptoms. Death anxiety showed significant difference according to faith in God and afterlife beliefs. Distress in the process of dying needs to be managed for cancer patients and spiritual interventions should be considered to relieve death anxiety.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.9
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• pp.6044-6052
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• 2015

This study was conducted to identify the level of empathy and clinical practice stress and the relationship between empathy and clinical practice stress in nursing students. Data were collected from 252 nursing students between 1st September and 31st December 2013. 249 questionnaires were analyzed using descriptive statistics, t-test, ANOVA, and Pearson's correlation coefficient. The mean scores of empathy level in the subcategories for perspective taking 3.57, fantasy 3.59, empathic concern 3.72 and personal distress 3.15 were above median and the mean score for clinical practice stress 3.03 was above median. Clinical practice stress positively correlated with personal distress on empathy. These findings indicate that there is a need to manage personal distress on empathy for nursing students with high level of personal distress to lessen stress in clinical practice of nursing students.

• The Transactions of the Korean Institute of Power Electronics
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• v.9 no.5
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• pp.405-412
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• 2004

In this paper, Non-contact power supply(NCPS) with the long primary cable longer than 20m and the large air-gap between the primary and secondary of Non-Contacting Transformer(NCT) is presented. The NCT has a large leakage inductance bigger than its magnetizing inductance because it has low coupling, and it is not efficient for NCPS to transfer the primary energy to the secondary one. In order to improve this problem, the voltage-gain characteristics of the series resonant converter, the parallel resonant converter, and the series-parallel resonant converter are analyzed respectively. In addition, the experimental results of 10kW prototype the series-parallel resonant converter is presented.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.5
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• pp.3293-3302
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• 2015

This study was conducted to identify families' perception and attitude toward application of physical restraint(PR) in general neurological wards. The study is based on subjects from 70 family members who have cared patients applying PR. Data was collected using self-report questionnaires and reviewing of patients' medical records. 68.6% of subjects were female and the mean age was 47.9 years old. Family members were either sons, daughters or spouses. The questionnaires analyzed families' perceptions based on a score of 5, the results showed a mean score of 4.2, and items related to maintaining therapeutic tools scored the highest. The application of PR with two hands was perceived by families as more important than PR applied with one hand. In families' attitude toward PR, there was general agreement that families had the right to decide to apply and remove PR. Continuous education and information regarding PR is required to support families.

• The KIPS Transactions:PartB
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• v.9B no.5
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• pp.579-586
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• 2002

The edge descriptor proposed by MPEG-7 standard is a representative approach for the contents-based image retrieval using the edge information. In the edge descriptor, the edge information is the edge histogram derived from a gray-level value image. This paper proposes a new method which extracts color edge information from color images and a new approach for the contents-based image retrieval based on the color edge histogram. The poposed method and technique are applied to image retrieval of the e-catalogue. For the evaluation, the results of image retrieval using the proposed approach are compared with those of image retrieval using the edge descriptor by MPEG-7 and the statistics shows the efficiency of the proposed method. The proposed color edge model is made by combining the R,G,B channel components vectorially and by characterizing the vector norm of the edge map. The color edge histogram using the direction of the color edge model is subsequently used for the contents-based image retrieval.