• Kyungpook Mathematical Journal
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• 제47권2호
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• pp.165-714
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• 2007

The basis number of a graph G is the least positive integer $k$ such that G has a $k$-fold basis. In this paper, we prove that the basis number of the cartesian product of a path with a circular ladder, a M$\ddot{o}$bius ladder and path with a net is exactly 3. This improves the upper bound of the basis number of these graphs for a general theorem on the cartesian product of graphs obtained by Ali and Marougi, see [2]. Also, by this general result, the cartesian product of a theta graph with a M$\ddot{o}$bius ladder is at most 5. But in section 3 we prove that it is at most 4.

• 산업융합연구
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• 제15권2호
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• pp.45-56
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• 2017

본 연구의 목적은 국내 증권형 크라우드펀딩의 달성률에 영향을 주는 투자자 수의 영향력을 분석하여, 일반 투자자의 참여가 필요한 이유에 대해 알아보고 일반 투자자의 참여를 높이는 방안을 제시함에 목적이 있다. 이를 위해 증권형 크라우드펀딩에서 실제 진행된 190개의 진행결과를 분석하였고, 국내 증권형 크라우드펀딩의 달성률에 영향을 주는 요인으로는 선행연구와 같이 모집금액, 목표금액, 모집기간과 사업연수의 영향력을 확인할 수 있었으며, 달성률에 대한 영향요인이 일반 투자자의 수가 증가함에 따라 더욱 더 큰 영향을 줄 수 있음을 확인하였다. 따라서, 정부에서는 일반 투자자에 대한 규제를 보다 더 완화하는 노력을 기울여야 하며 자금수요자는 일반 투자자의 자금 회수를 위하여 KSM시장을 통한 기업공개에 대한 노력을 강화하고 공시해야만 일반 투자자의 참여를 이끌어 낼 수 있으며 크라우드 펀딩을 통하여 원할한 자금 확보를 이끌어 낼 수 있을 것이다.

• 임상간호연구
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• 제16권3호
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• pp.99-109
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• 2010

Purpose: This study was aimed to examine changes of hospital nurse staffing by hospital characteristics during 2008-2010. Methods: The study sample included 44 tertiary hospitals, 226 general hospitals, and 532 non-general hospitals that were operating during 2008-2010. Grade of nursing management fee was categorized from Grade 1(highest) to 6 (lowest) in tertiary hospitals, l or Grade 7 in general hospitals and non-general hospitals based on the nurse-to-bed ratio. For data analysis, ${\chi}^2$ and GEE were conducted. Results: For three years, the number of tertiary hospitals below Grade 2 were increased from 8 to 12, the number of those above Grade 4 were decreased from 15 to 6. The number of general hospitals above Grade 6 decreased from 123 to 86. Tertiary hospitals and general hospitals had more possibilities to improve nurse staffing grade than general hospital (OR 79.69, 95% CI 50.77~125.09, OR 11.25, 95% CI 8.15~15.53, respectively). Greater likelihood of improvement in grade of nursing management fee was found in university hospital or hospitals with 300 or more beds than other types of hospitals. Conclusion: Differentiating nurse staffing system by hospital type and increasing financial incentives according to the grades are needed to improve hospital nurse staffing.

• 한국식품위생안전성학회지
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• 제14권4호
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• pp.433-435
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• 1999

부산지역 4곳의 지하수와 시판생수 그리고 정수기를 통한 정수를 냉장과 실온에 보관하면서 일정기간별로 저장중에 따른 미생물의 변화를 연구한 결과 다음과 같이 나타났다. 지하수에서의 저장기간 동안 일반세균에 대한 변화는 최저 $10^2$~$10^3$CFU/m1 최고 $10^2$~$10^{5}$ CFU/m1의 범위로 나타났으며, 대장균에 대한 변화는 areaII를 제외한 지역의 시료에서 검출되었으며 7일차 경과 후 감소하는 경향을 보였다. 시판생수에서의 일반세균에 대한 변화는 최저10~$10^4$CFU/m1, 최고 $10^2$~$10^{5}$ CFU/m1의 범위로 나타났다. 대장균에 대한 변화는 제품I과 제품III에서는 검출되지 않았고, 제품II에서는 일반세균과 대장균이 냉장, 실온 모두에서 상당히 많은 수의 대장균이 검출되었으며, 7일차 이후에는 검출되지 않았다. 정수에서의 일반세균에 대한 변화는 냉장과 실온 각각 $10^3$~$10^4$CFU/m1, $10^2$~$10^4$CFU/m1의 범위로 나타났으며, 대장균은 전체보관기간동안 불검출로 나타났다.

• Imaging Science in Dentistry
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• 제43권2호
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• pp.99-104
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• 2013

Purpose: This study was performed to investigate the clinical usefulness of teleradiology in general dental practice. Materials and Methods: Two hundred and seventy five cases were submitted for inquiry to the case presentation board of the website of The Korean Academy of Oral and Maxillofacial Radiology for a 5 year periods. The diagnosis results of those cases were analyzed according to the disease classification, the correlation with the patient's chief complaint, the necessity of additional examinations or treatments, the image modalities, and the number of dentists inquiring. Results: Differential diagnoses of normal anatomic structures were the most frequently submitted cases, covering 15.6% of all cases. Among 275 cases, 164 cases required no additional treatments or examinations. Panoramic radiographs were the most frequently submitted images, accounting for 248 inquiries. The 275 cases were submitted by 96 dentists. Fifty-two dentists wrote one inquiry, and 44 inquired 2 or more times. The average inquiry number of the latter group was 5.0 cases. Conclusion: A teleradiology system in general dental practice could be helpful in the differential diagnosis of common lesions and reduce unnecessary costs.

• East Asian mathematical journal
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• 제34권3호
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• pp.295-303
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• 2018

Gautam et al. [9] introduced the multivariable A-function, which is very general, reduces to yield a number of special functions, in particular, the multivariable H-function. Here, first, we aim to establish two very general integral formulas involving product of the general class of Srivastava multivariable polynomials and the multivariable A-function. Then, using those integrals, we find a solution of partial differential equations of heat conduction at zero temperature with radiation at the ends in medium without source of thermal energy. The results presented here, being very general, are also pointed out to yield a number of relatively simple results, one of which is demonstrated to be connected with a known solution of the above-mentioned equation.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제26권1호
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• pp.73-84
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• 2020

Purpose: Though Korean healthcare services have been upgraded, infection and fire had been broken out in general hospitals. And higher concerns about quality assessment made it to clinical laboratory design guideline studies. So, this study investigates the facilities, equipment and personnel of laboratory medicine focusing on more than five hundred fifty bed hospital, and contributes to make guidelines for safety and efficiency in lab. Methods: Questionnaires to supervisor technologist and field surveys to medical laboratories in korean hospitals have been conducted for the data collection. 16 answers have been analysed statistically by MS Excel program. Results: Most of the sample tests such as hematology, clinical chemistry, immunology, transfusion, urinalysis, microbiology and molecular diagnosis are performed by more than 80% in large sized general hospital laboratory. In the test methods, automatic analyzers are used up to 80%, total laboratory automation up to 43% in clinical chemistry and immunology, and manual tests in all sorts of the test. There are placed in single lab or two and three labs above the ground, which are all in semi-open lab. There is some correlation with the number of specimens and the number of lab people depending on the number of hospital beds. Laboratory environment shows that work distance is good, but evacuation path width, visibility, separation of staff area from automatic analyzer, and equipment installations are needed to have more spaces and gears. Most of the infection controls are equipped with mechanical ventilation, air-conditioning, washbasin and wastewater separation, BSC installation and negative pressure lab room. Implications: Although the laboratory space area is calculated considering the number of hospital beds, type of tests and number of staff, hospital's expertise and the samples numbers per year should be taken into account in the planning of the hospital.

• 한국임상보건과학회지
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• 제2권3호
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• pp.158-166
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• 2014

Purpose. This study pursued the way for the effective application of the differentiated charge (Nursing grading system) by the nursing manpower which is performed for the nursing service quality improvement to the in-patients in Korea and the minimum employment problem solution of nurses. Methods. For this matter, the status of the nursing grade for 1,452 hospitals (44 high class general hospitals, 259 general hospitals, 265 hospitals, 59 oriental medicine hospitals and 825 recuperation hospitals) was identified which were registered in the Health Insurance Review and Assessment Service in March 2011 status quo. Results. In the most nursing grade by the kind of medical institutions, 70.5% of the nurses were third-graded in upper general hospitals, 38.1% were sixth graded in general hospitals, 62.7% were seventh-graded in oriental medicine hospitals and 40.4% were first-graded in recuperation hospitals. In the nursing grade by the scale of hospitals (in terms of the number of beds), there was a significant difference in general hospitals, but there was no significant difference between oriental medicine hospitals and recuperation hospitals. In the nursing grade by the location of hospitals and the foundation type of hospitals, there was a significant difference between general hospitals and recuperation hospitals. Conclusion. For the effectiveness of applying differentiated nursing fees by the number of nurses, it seems necessary to consider adjusting the present differentiated inpatient-charge system for the better so that small and medium-sized hospitals may induce more nurses.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제23권3호
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• pp.47-56
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• 2017

Purpose : This study is a basic research to establish guidelines for healthcare facility in Korean healthcare market. As a first step, it is a main purpose for making beginning point of ICU guideline to set a basic level of ICU facility size and quality by analysis current ICU facilities and existed domestic guidelines : law, criteria of healthcare insurance review and assessment service, credit of Korea institute for healthcare accreditation. Methods : First of all, the all requirements of existed guidelines are put together and summarized. The summary is compared with that of US, UK, and Australia to know its quality difference with international market. In addition, all hospitals in Korean market are classified based on total bed number and ICU bed number to know the most occupied facility size range in the market. Second of all, by comparing 15 ICUs' current setting of the public general hospital, a general condition of ICU facility would be extracted based on function, floor area per bed, services Results : 72.8% of hospitals in Korea are belonging below 500 beds hospital. Among them 200-299 beds hospitals occupied 35.3% and are shown as the most occupied hospital size. As 15 public general hospitals are analyzed, it is clear that the more bed size and services the more ICU area per bed. As a result it is sure that the 300~500 bed may be a clear line as a general ICU condition whose function and bed number relatively consistent in the range. Implications : to keep the qualified medical environment and contemporary hospital trend, the guideline as a minimum requirement keep naturally out from current healthcare settings and should reflect their limit to reconcile with the new trend in the market.

• Archives of Plastic Surgery
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• 제51권1호
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• pp.87-93
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• 2024

This study aimed to analyze cases of anterolateral thigh (ALT) free flap used for hand reconstruction with terminal perforator-to-digital artery anastomosis. Patients who underwent ALT free flap placement with terminal perforator-to-digital artery anastomosis for hand reconstruction between January 2011 and August 2021 were included. The number, length, and diameter of the perforators and veins, flap size, and operative time were investigated through a retrospective review of charts and photographs. The occurrences of arterial thrombosis, venous thrombosis, arterial spasm, and flap necrosis were analyzed. In total, 50 patients were included in this study. The mean diameter and length of the perforators were 0.68 mm and 3.25 cm, respectively, and the mean number of veins anastomosed was 1.88, with a mean diameter of 0.54 mm. Complications included four cases of arterial thrombosis, one case of venous thrombosis, seven cases of partial necrosis, and one case of total flap failure. Regression analysis showed that a longer perforator was associated with arterial thrombosis whereas larger flap size and number of anastomosed veins were associated with partial necrosis (p < 0.05). The terminal perforator-to-digital artery anastomosis offers advantages in using compact free flaps with short pedicle lengths to cover small hand defects.