• The Journal of Internal Korean Medicine
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• v.36 no.2
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• pp.153-164
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• 2015

Objectives: The aim of this study was to collect and analyze studies on acupuncture therapies for treatment of voiding difficulty in stroke patients and to suggest methods of study for acupuncture therapies. Methods: Electronic searches were performed on search sites including NDSL, 국회도서관, RISS4U, DBPIA, KISS, KMBASE, KoreaMed, 한국전통지식포탈, OASIS, Pubmed, CNKI, using the search words ‘중풍’, ‘뇌졸중’, ‘stroke’, ‘배뇨장애’, ‘voiding’, ‘urinary’, ‘incontinence’, ‘retention’, ‘ ’, ‘침치료’, and ‘acupuncture’ as single or combined keywords, from January 1990 to August 2013 with language limitation, Korean, English, Chinese. Also, quality of the studies were evaluated using Jadad score. Results: The searches identified 16 studies for selection and analysis. In the present study, voiding difficulty includes urinary incontinence and urinary retention. The acupuncture points CV4, SP6, and CV3 were the most frequently used. Treatments were most frequently applied daily. The times and terms of acupuncture treatment, were most frequently 30 minutes per treatment for 4 weeks Conclusions: The acupuncture therapies were effective in the treatment of voiding difficulty in stroke patients, but the study of acupuncture therapy as a treatment for this issue in stroke patients needs to be standardized and high-quality study models should be introduced.

• Journal of the Korean Society of Earth Science Education
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• v.5 no.3
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• pp.245-255
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• 2012

The purposes of this research are to analyze preservice elementary teachers' degree of difficulty in classes of seasonal variation and suggest the measures of classes so that preservice elementary teachers can progress classes of seasonal variation effectively. To achieve them, the research was conducted for 90 first graders completing teaching method of elementary science in P university of education from Sep. to Dec. 2012. This research was conducted, based on the results of in-depth interview for 9 preservice elementary teachers who performed classes of seasonal variation, survey on the degree of class difficulty and evaluation of classes on 8 classes theme of Earth sector in elementary science. The results of this research are as follows. The first, preservice elementary teachers had relatively high class difficulty for teaching seasonal variation among the sector of the earth in elementary science. The second, in the evaluation of preservice elementary teachers' classes, the more the subject showed high class difficulty, the more the score of class evaluation was low. The reason is analyzed that high class difficulty reduces teacher's confidence. The third, preservice elementary teachers had insufficient knowledges and concepts which are basically necessary for the classes of seasonal variation. Especially, it was more serious for preservice elementary teachers who didn't learn Earth-science during their high school time. The fourth, it is necessery that concrete and systematical teaching method should be developed so as to improving preservice elementary teachers' teaching method for the classes of seasonal variation.

• The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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• v.8 no.1
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• pp.5-14
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• 2002

Objectives : In order to investigate industrial fatigue due to visual display terminal (VDT) work of post office. Methods : The questionnaire survey for subjective symptoms of fatigue was carried out on 39 post office clerks who had been engaged in VDT work for various length of work hours. The questionnaire comprised three groups of 10 items each, representing dullness and sleepiness, difficulty in concentration and bodily projection of fatigue. Results : The scores of dullness and sleepiness was 16.62, scores of concentration difficulty was 16.35, those of bodily fatigue was 16.23, and total scores was 49.21. Fatigue scores was significantly associated with age and work duration, VDT of work hours, ventilation, illumination, nosie. Conclusions : Data from this study support a statistically significant association between age and scores of dullness, scores of concentration difficulty, between work duration and scores of dullness, scores of bodily fatigue, between VDT of work hours and scores of bodily fatigue.

• 전자공학회논문지 IE
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• v.45 no.4
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• pp.68-73
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• 2008

In this research, we proposed a learner tailoring question recommendation system for web based learning evaluation system. For teaming evaluation process, this system used the item difficulty Each question was stored and managed to the question bank. Item difficulty was recalculated during teaming process and feedback in next course. For learner tailoring question recommendation, learner could choice the teaming part and set the learning difficulty. In application result of proposal method, almost learner could improve learning score by controling teaming difficulty.

• Knee surgery & related research
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• v.30 no.4
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• pp.319-325
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• 2018

Purpose: Body mass index (BMI) is often used to predict surgical difficulty in patients receiving total knee arthroplasty (TKA); however, BMI neglects variation in the central versus peripheral distribution of adipose tissue. We sought to examine whether anthropometric factors, rather than BMI alone, may serve as a more effective indication of surgical difficulty in TKA. Materials and Methods: We prospectively enrolled 67 patients undergoing primary TKA. Correlation coefficients were used to evaluate the associations of tourniquet time, a surrogate of surgical difficulty, with BMI, pre- and intraoperative anthropometric measurements, and radiographic knee alignment. Similarly, Knee Injury and Osteoarthritis Outcome Score (KOOS) was compared to BMI. Results: Tourniquet time was significantly associated with preoperative inferior knee circumference (p=0.025) and ankle circumference (p=0.003) as well as the intraoperative depth of incision at the quadriceps (p=0.014). BMI was not significantly associated with tourniquet time or any of the radiographic parameters or KOOS scores. Conclusions: Inferior knee circumference, ankle circumference, and depth of incision at the quadriceps (measures of peripheral obesity) are likely better predictors of surgical difficulty than BMI. Further study of alternative surgical indicators should investigate patients that may be deterred from TKA for high BMI, despite relatively low peripheral obesity.

• Korean Journal of Radiology
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• v.20 no.1
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• pp.114-125
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• 2019

Objective: Segmented cardiac cine magnetic resonance imaging (MRI) is the gold standard for cardiac ventricular volumetric assessment. In patients with difficulty in breath-holding or arrhythmia, this technique may generate images with inadequate quality for diagnosis. Real-time cardiac cine MRI has been developed to address this limitation. We aimed to assess the performance of retrospective electrocardiography-gated real-time cine MRI at 3T for left ventricular (LV) volume and mass measurement. Materials and Methods: Fifty-one patients were consecutively enrolled. A series of short-axis cine images covering the entire left ventricle using both segmented and real-time balanced steady-state free precession cardiac cine MRI were obtained. End-diastolic volume (EDV), end-systolic volume (ESV), stroke volume (SV), ejection fraction (EF), and LV mass were measured. The agreement and correlation of the parameters were assessed. Additionally, image quality was evaluated using European CMR Registry (Euro-CMR) score and structure visibility rating. Results: In patients without difficulty in breath-holding or arrhythmia, no significant difference was found in Euro-CMR score between the two techniques (0.3 ± 0.7 vs. 0.3 ± 0.5, p > 0.05). Good agreements and correlations were found between the techniques for measuring EDV, ESV, EF, SV, and LV mass. In patients with difficulty in breath-holding or arrhythmia, segmented cine MRI had a significant higher Euro-CMR score (2.3 ± 1.2 vs. 0.4 ± 0.5, p < 0.001). Conclusion: Real-time cine MRI at 3T allowed the assessment of LV volume with high accuracy and showed a significantly better image quality compared to that of segmented cine MRI in patients with difficulty in breath-holding and arrhythmia.

• The KIPS Transactions:PartA
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• v.17A no.1
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• pp.45-52
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• 2010

The National Assessment of Educational Achievement has been conducted in the form of sampling assessment until 2007, but it was converted into sampling assessment one hundred percent working with relevant whole students in 2008. Therefore, the necessity of new study on the national assessment system of educational achievement was on the rise. The National Assessment System of Educational Achievement, which was implemented in this thesis was designed to analyze educational achievement status all over the province, total score and score frequency distribution per subject, item difficulty and item discrimination, degree of attraction of wrong answers, educational achievement per subject, gender, region, office of education, school, individual and status of students with high educational achievement.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.18 no.3
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• pp.373-382
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• 2011

Purpose: The purpose of this study was to assess the educational needs of ICU nurses based on an analysis of importance, frequency, and difficulty for ICU nursing practice. Method: A cross-sectional survey was conducted using a questionnaire with 80 questions in 14 ICU nursing categories. Data were collected from August to October 2009. A total of 295 ICU nurses from five hospitals who had minimum of one year clinical experience participated. Data were analyzed with using descriptive statistics. Results: For importance, emergency care had the highest score, followed by physical assessment, communication, cardiovascular care, and ICU basic nursing. Regarding the frequency, physical assessment had the highest score, followed by communication, medication, ICU basic nursing, and respiratory care. Cardiovascular care was the most difficult task, followed by neurological care, emergency care, other ICU related nursing care, diagnostic test, and communication. Conclusion: The findings indicate a high educational need in the areas of communication, medication, physical assessment, diagnostic test, emergency care, and cardiovascular care. Thus the development of educational programs on communication, medication, physical assessment, diagnostic test, emergency care, and cardiovascular care are needed for ICU nurses.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.40 no.1
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• pp.1-10
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• 2017

The difficulties in opening and closing a sport utility vehicle (SUV) tailgate is important aspect of JD (James David) power's Initial Quality Survey (IQS) assessment, and affective quality has a big impact on the the success of thesedays products. The purpose of this study is to evaluate the perceived difficulty and satisfaction of customers by the opening and closing of the tailgate and to grasp the relationship between them and the opening and closing reaction force. The mechanical force required to open and close 42 domestic and overseas SUV tailgates was measured with the help of an auto company. In the experiment, 100 male drivers in their 20s to 50s evaluated perceived difficulty and satisfaction with opening and closing the tailgate. The results of the analysis showed that perceived difficulty and satisfaction were statistically different depending on the vehicle, but did not depend on the personal characteristics of the participants. The perceived difficulty and satisfaction regression model of tailgate opening and closing was developed by mechanical force variables and had a relatively high adjusted $R^2$ ranging from 0.62 to 0.73. The models showed that the the initial close and open force, the difference between initial and maximum close force and the difference between initial and auto-fall angle should be small for the low perceived exertion and high satisfaction. In addition, the correlation analysis between IQS score of tailages and perceived difficulty and satisfaction showed that the IQS scores were more related to the perceived difficulty and satisfaction of closing than those of opening. The results of the study will be helpful to design and test mechanical open and close structure of SUV tailgates.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.16 no.2
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• pp.232-241
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• 2009

Purpose: The purpose of this study was to analyze the importance, difficulty, and frequency of work (duties and tasks) done by nurses' in Outpatient Departments (OPD). Method: Data were collected using structured questionnaires, which included 11 duties and 92 tasks making up the OPD nurse's job. Questionnaires were completed by 286 nurses. Each duty and task was analyzed for importance, difficulty, and frequency (range 1-3). Results: The mean score for importance was $2.58{\pm}0.29$, for difficulty, $2.11{\pm}0.31$, and for frequency, $2.18{\pm}0.31$. OPD nurses recognized 'patient education and consultation' as important and difficult. However, in practice OPD nurses reported the most frequent task as 'support for medical services'. There was a significant difference in importance and difficulty of duties according to OPD nurses' university degree (F=3.693, p=.026; F=4.089, p=.018) and hospital size (F=4.274, p=.006; F=3.154, p=.025). However there were no differences in importance, difficulty, or frequency according to clinical experience in OPD. Conclusion: The findings indicate that OPD nurses must be able to do important and difficult duties and tasks, especially patient education and consultation. To have time for these uniquely nursing tasks, OPD nurses need to delegate 'preparation for medical service', and 'management of facility and environment' to nonmedical health-care workers.