• 한국운동역학회지
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• 제27권2호
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• pp.117-124
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• 2017

Objective: The purpose of this study was to examine the effect of changes in degrees of freedom of the fingers (i.e., the number of the fingers involved in tasks) on the task performance during force production and releasing task. Method: Eight right-handed young men (age: $29.63{\pm}3.02yr$, height: $1.73{\pm}0.04m$, weight: $70.25{\pm}9.05kg$) participated in this study. The subjects were required to press the transducers with three combinations of fingers, including the index-middle (IM), index-middle-ring (IMR), and index-middle-ring-little (IMRL). During the trials, they were instructed to maintain a steady-state level of both normal and tangential forces within the first 5 sec. After the first 5 sec, the subjects were instructed to release the fingers on the transducers as quickly as possible at a self-selected manner within the next 5 sec, resulting in zero force at the end. Customized MATLAB codes (MathWorks Inc., Natick, MA, USA) were written for data analysis. The following variables were quantified: 1) finger force sharing pattern, 2) root mean square error (RMSE) of force to the target force in three axes at the aiming phase, 3) the time duration of the release phase (release time), and 4) the accuracy and precision indexes of the virtual firing position. Results: The RMSE was decreased with the number of fingers increased in both normal and tangential forces at the steady-state phase. The precision index was smaller (more precise) in the IMR condition than in the IM condition, while no significant difference in the accuracy index was observed between the conditions. In addition, no significant difference in release time was found between the conditions. Conclusion: The study provides evidence that the increased number of fingers resulted in better error compensation at the aiming phase and performed a more constant shooting (i.e., smaller precision index). However, the increased number of fingers did not affect the release time, which may influence the consistency of terminal performance. Thus, the number of fingers led to positive results for the current task.

• 한국중재학회지:중재연구
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• 제19권3호
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• pp.93-119
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• 2009

Nowadays the number of crimes is increasing rapidly and society is getting more and more dangerous. Recently the criminal aspect of our society, the intelligence, diversity, localized area, as well as for the crime victims also difficult to predict the damage recovery is not easy to change their level of pain and are also serious. This phenomenon is increasingly expected to intensify, the proper response is a factory. The more so if the victim of murder. The criminal mediation working on the operational adjustments Borrower payment, Construction charges, investments and financial transactions due to interpersonal conflicts that occurred as a fraud, embezzlement, breach of trust property crimes such accused, individuals between the defamatory, offensive, encroachment, violating intellectual property rights and private Disputes about the complaint case and other criminal disputes submitted to mediation to resolve it deems relevant to the case who are accused. But the core of a detective control adjustment, adjust the members' representative to the region, including front-line player or a lawyer appointed by the attorney general at this time by becoming parties to this negative view may be ahead. Some scholars are criticizing the current criminal justice system for the absence of proper care for the criminal victims, as an alternative to the traditional criminal justice system. The introduction of the summary trial and related legal cases, the command structure, compensation system, crime victims' structural system can be seen as more classify, crime subject to victim's complaint, By case with a criminal misdemeanor in addition to disagree not punish criminal, minor offense destination, traffic offenders, regular property crime, credit card theft, intellectual property rights violators can be seen due to more categories can try. They sued in law enforcement, Prosecution case has been received and if any one party to the criminal detective Arbitration request arbitration by the parties can agree to immediately contact must be referred to arbitration within 15 days of when the arbitration case will be dismissed. These kinds of early results of the case related to, lawyers are involved directly in the arbitration shall be excluded. Arbitration system is the introduction of criminal justice agencies working to help resolve conflicts caused by adjustment problems will be able to. This article does not argue that we should stick to the traditional justice system as a whole. Instead it argues that the restrictive role of the traditional justice is to be preserved.

• 전자공학회논문지SC
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• 제46권2호
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• pp.72-77
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• 2009

본 논문은 별도 기준 클록 없이 고속 시리얼 데이터 통신을 위한 3.2Gb/s 클록 데이터 복원(CDR) 회로를 설명한다. CDR회로는 전체적으로 5부분으로 구성되며, 위상검출기(PD)와 주파수 검출기(FD), 다중 위상 전압 제어 발진기(VCO), 전하펌프(CP), 외부 루프필터(LF)로 구성되어 있다. CDR회로는 half-rate bang-bang 타입의 위상 검출기와 입력 pull-in 범위를 늘릴 수 있도록 half-rate 주파수 검출기를 적용하였다. VCO는 4단의 차동 지연단(delay cell)으로 구성되어 있으며 튜닝 범위와 선형성 향상을 위해 rail-to-rail 전류 바이어스단을 적용하였다 각 지연단은 풀 스윙과 듀티의 부정합을 보상할 수 있는 출력 버퍼를 갖고 있다. 구현한 CDR회로는 별도의 기준 클록 없이 넓은 pull-in 범위를 확보할 수 있으며 기준 클록 생성을 위한 부가적인 Phase-Locked Loop를 필요치 않기 때문에 칩의 면적과 전력소비를 효과적으로 줄일 수 있다. 본 CDR 회로는 0.18um 1P6M CMOS 공정을 이용하여 제작하였고 루프 필터를 제외한 전체 칩 면적은 $1{\times}1mm^2$이다. 3.2Gb/s 입력 데이터 율에서 모의실험을 통한 복원된 클록의 pk-pk 지터는 26ps이며 1.8V 전원전압에서 전체 전력소모는 63mW로 나타났다. 동일한 입력 데이터 율에서 테스트를 통한 pk-pk 지터 결과는 55ps였으며 신뢰할 수 있는 입력 데이터율 범위는 약 2.4Gb/s에서 3.4Gb/s로 나타났다.

• 한국산학기술학회논문지
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• 제21권4호
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• pp.201-209
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• 2020

본 연구에서는 최근 수가계약 과정에서 논란이 되고 있는 기준연도 변경과 관련된 이슈를 살펴보았다. 이와 관련하여 기준연도 변경이 유형별 환산지수에 미치는 영향과 관련해 민감도분석을 실시하였다. 그리고 기준연도변경이 특정유형에 미치는 유리하거나 불리한 상황을 분석하였다. 또한 단일 환산지수 체계라고 가정하는 경우 기준연도 변경에 따른 환산지수 변동도 고찰하였다. 본 연구의 주요한 결론은 다음과 같다. 첫째, 기준연도를 현재시점에 가깝게 변경하는 경우 병원의 환산지수에는 유리한 효과가 발생한다. 둘째, 기준연도를 현재 시점에 가깝게 변경하는 경우 약국과 의원의 환산지수에는 불리한 효과가 발생하며 의원의 경우 불리한 효과가 크다. 셋째, 유형 전체에 단일 환산지수를 일괄적으로 적용한다고 가정하면 기준연도를 현재 시점에 가깝게 변경하는 경우 모든 유형에 유리한 효과가 발생한다. 기준연도 변동은 보험자와 의료공급자, 의료공급자 사이에 이해충돌을 가지고 올 수 있다. 따라서 자원 배분의 합리적인 근거를 바탕으로 상호 합의에 추진되어야 하며 손실이 초래되는 유형에 대해서는 한시적 보상을 위한 인센티브를 제시할 필요가 있다.

• 한국산림과학회지
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• 제55권1호
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• pp.55-58
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• 1982

본 연구(硏究)는 잣나무림(林)의 일차(一次) 생산력(生産力)을 알기위한 것으로, 엽(葉)의 온도(溫度) 광도(光度) 수분결핍(水分缺乏) 등이 광합성속도(光合成速度)및 호흡속도(呼吸速度)에 미치는 영향(影響)을 측정(測定) 보고(報告)한다. 1) 광포화(光飽和)는 40Klwx 전후에서 일어나며 광보상점(光補償点)은 l.0~1.3Klwx 임을 알았다. 2) 당년엽(當年葉)의 광합성(光合成) 속도(速度)가 가장 높고 엽령(葉令)이 증가함에 따라 감소(減少)했다. 3) 온도반응(溫度反應)에 따른 호흡속도(呼吸速度)는 2월엽(月葉)이 8월엽(月葉)보다 2배(倍)정도 높았고, 양자(兩者) 모두 $17^{\circ}C$ 이하에서 심한 감소(減少)를 보였다. 4) 광합성(光合成) 속도(速度)는 약 -10bar에서 감소(減少)가 시작되며 약 -24bar에서 0으로 되었다. 호흡속도(呼吸速度)는 약 -5 bar에서 감소(減少)가 시작 -24bar에서 43% 정도 감소했다. 5) 광합성(光合成)에 관한 최적온도(最適溫度)는 8월 엽(葉)에서 $23{\sim}26^{\circ}C$, 2월엽(月葉)에서 $15{\sim}18^{\circ}C$를 나타냈다.

• Journal of Chest Surgery
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• 제16권2호
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• pp.213-220
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• 1983

Pulmonary function is the determinant of blood gas tension. However, Acid-Base disturbances can also alter partial pressures of oxygen and carbon dioxide in arterial blood. During respiratory acidosis $PO_2$ will be lowered and reverse changes will be produced during respiratory alkalosis. On the other hand, in metabolic acidosis $PO_2$ will be elevated and $PCO_2$ will be lowered by the respiratory compensation, and reverse response will be induced in metabolic alkalosis. Urinary gas tension has many influencing factors than arterial blood and difficult to estimate the tendency of its alterations. Urinary $PO_2$ and $PCO_2$ are not always identical level as venous blood. It is to be altered by blood gas tension, flow rate of urine, metabolic rate of kidney, and Acid-Base status of blood. Particularly countercurrent exchange of oxygen and carbon dioxide in the renal medulla will make larger alteration of gas tension than venous blood. After induction of Acid-Base disturbances [disturbances] arterial and urinary $PCO_2$, $PO_2$, urinary volume, and osmolarity were determined in dogs, and the relationships between arterial and urinary $PCO_2$ , $PO_2$ Acid-Base disturbances, urinary volume, and osmolarity were investigated. 1. During the acute Metabolic and Respiratory disturbances urinary pH did not respond on respiratory origin. However, there were immediate urinary response in pH on metabolic origin. 2. Urinary $PO_2$, $PCO_2$, did not always follow arterial or venous gas tension and Acid-Base disturbance. Urinary $PCO_2$, correlate well with the urinary volume. The larger the urinary volume, $PCO_2$ lowered to the venous level. The smaller the urinary volume, urinary $PCO_2$ tends to be higher. However urinary $PO_2$ did not have any particular correlation with urinary volume. 3. Correlation between urinary $PCO_2$ and $PO_2$ were inversely proportional to arterial blood. Differences of $PCO_2$ between arterial blood and urine also did not have any particular correlation with urinary volume. This may suggest that changes on blood gas tensions can influence on urinary $PCO_2$. 4. There were eminent clear inverse correlation between urinary $PCO_2$ and osmolar concentrations of urine. Above results strongly suggest that partial pressure of gas in urine primarily depend upon counter-current exchanges in renal medullary tissues.

• 한국산업보건학회지
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• 제25권2호
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• pp.134-145
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• 2015

Objectives: An objective of this study was to perform a risk assessment and social cost-benefit analysis for revising permissible exposure limits for seven substances: Nickel(Insoluble inorganic compounds), benzene, carbon disulfide, formaldehyde, cadmium(as compounds), trichloroethylene, touluene-2,4-diisocyanate. Materials and Methods: The research methods were divided into risk and hazard assessment and cost-benefit analysis. The risk and hazard assessment for the seven substances consists of four steps: An overview of GHS MSDS(1st), review of document of ACGIH's TLVs (2nd), comparison between international occupational exposure limits and domestic permissible exposure limits(3rd), and analysis of excess workplace and excess rate for occupational exposure limits based on previous work environment measurement data(4th). Total cost was estimated using cost of local exhaust ventilation, number of excess workplace and penalties for exceeding a permissible exposure limit. On the other hand, total benefit was calculated using the reduction rate of occupational disease, number of workplaces treating each substance and industrial accident compensation. Finally, the net benefit was calculated by subtracting total cost from total benefit. Results: All the substances investigated in this study were classified by CMR(Carcinogens, Mutagens or Reproductive toxicants) and their international occupational exposure limits were stricter than the domestic permissible exposure limits. As a result of excess rate analysis, trichloroethylene was the highest at 11%, whereas nickel was the lowest at 0.5%. The excess rates of all substances except for trichloroethylene were observed at less than 10%. Among the seven substances, the total cost was highest for trichloroethylene and lowest for carbon disulfide. The benefits for the seven substances were higher than costs estimated based on strengthening current permissible exposure limits. Thus, revising the permissible exposure limits of the seven substances was determined to be acceptable from a social perspective. Conclusions: The final revised permissible exposure limits suggested for the seven substances are as follows: $0.2mg/m^3$ for nickel, 0.5 ppm(TWA) and 2.5 ppm(STEL) for benzene, 1 ppm(TWA) for carbon disulfide, $0.01mg/m^3$(TWA) for cadmium, 10 ppm(TWA) and 25 ppm(STEL) for trichloroethylene, 0.3 ppm(TWA) for formaldehyde, and 0.005 ppm(TWA) and 0.02 ppm(STEL) for toluene diisocynate(isomers).

• 보건행정학회지
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• 제28권3호
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• pp.195-196
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• 2018

The Korean Academy of Health Policy and Management (KAHPM) has shown remarkable achievements in the field of health policy and management in Korea for the last 30 years. The KAHPM consists of experts in various fields of health policy and management, and has been the leading academic discussion forum for health policy agendas of interest to the public. Health Policy and Management (HPM), the official journal of the KAHPM, published the first issue of volume 1 in October, 1991 and is publishing the second issue of volume 28 as of 2018. Currently, it is one of Korea' main journals in the field of health policy and management. HPM has published a special issue in commemoration of the 30th anniversary of the KAHPM. The HPM invited authors, including former presidents of the KAHPM and current board members, to write about main issues in health policy and management. Although the HPM tried to set up an invited author on all subjects in the health policy and management field, 19 papers are published, that completed the peer review process by August, 2018. The authors of the special issue of the 30th anniversary of the KAHPM include six former presidents, a senior professor, and 12 board members. The subjects of this issue are reform of the healthcare delivery system, health insurance and medical policy, reform of health system governance, the role of National Health Insurance Service (NHIS), the Korea Institute for Health and Social Affairs (KIHASA) and the National Evidence-based healthcare Collaborating Agency (NECA), ethical aspects of health policy change, regional disparities of healthcare, healthcare accreditation, new healthcare technology evaluation system, globalization of the healthcare industry, the epidemiological investigator system, the quarantine system, safety and disaster, and official development assistance. There are some remaining topics to deal with for the KAHPM: aged society, anti-smoking, non-infectious disease, suicide, healthcare resources, emergency medical care, out-of-pocket money, medical fee payment system, medical aid system, long-term care insurance, industrial accident compensation insurance, community-centered health welfare system, and central government and local government of health. The HPM will continue to publish review articles on the main topics in health policy and management. This is because the KAHPM, which has been the leading academic society of Korea's health policy and management for the last 30 years, feels responsible for continuing its mission for the next 30 years.

• 한국컴퓨터정보학회논문지
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• 제17권3호
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• pp.185-191
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• 2012

상조서비스 사업의 본질은 상품과 서비스를 일반 상거래로 보는 것이 일반적인 시각이다. 사업자 즉 상례와 관련된 상조조직과 상조회사가 서비스이용자와의 계약을 통해 이루어지는 계약을 통해 장래 회원의 요구시점에 상품과 서비스를 제공하고 회원은 그 가격을 현재의 가격으로 대금을 지급하되 할부로 지급하는 것이다. 이런 상조업은 2005년 이후 이를 수행하는 업체수가 급증해 규모면에서도 3조원이 넘을 것으로 추정되는 거대한 사업으로 확장 되었다. 그러나 상조업 자체가 선불식 할부거래라는 특성 때문에 현행 개정된 할부거래에 관한 법률에서 규정하는 내용은 과거보다는 현실화가 되어 있기는 하지만 미흡한 점은 여전히 있다고 본다. 예를 들면 상조조직과 상조회사의 가입자에 대한 설명의무, 선수금예치계약에 따르는 소비자보호문제, 상조회사 설립시의 자본액의 상향 문제 등 제반 법적 검토 사항에 대한 입법적 불비가 그러하다. 본 논문에서는 이런 점들을 검토하고 다양화된 상조서비스 이용자의 점진적이고 확대되는 상조산업의 발전을 위하여 지적한 법적 사항에 대한 개선점과 할부거래에 관한 법률과 별도의 상조업법의 단일 입법을 결론적으로 주장하였다.

• 대한의용생체공학회:의공학회지
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• 제34권1호
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• pp.8-13
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• 2013

Persons with sensorineural hearing impairment have troubles in hearing at noisy environments because of their deteriorated hearing levels and low-spectral resolution of the auditory system and therefore, they use hearing aids to compensate weakened hearing abilities. Various algorithms for hearing loss compensation and environmental noise reduction have been implemented in the hearing aid; however, the performance of these algorithms vary in accordance with external sound situations and therefore, it is important to tune the operation of the hearing aid appropriately in accordance with a wide variety of sound situations. In this study, a sound classification algorithm that can be applied to the hearing aid was suggested. The proposed algorithm can classify the different types of speech situations into four categories: 1) speech-only, 2) noise-only, 3) speech-in-noise, and 4) music-only. The proposed classification algorithm consists of two sub-parts: a feature extractor and a speech situation classifier. The former extracts seven characteristic features - short time energy and zero crossing rate in the time domain; spectral centroid, spectral flux and spectral roll-off in the frequency domain; mel frequency cepstral coefficients and power values of mel bands - from the recent input signals of two microphones, and the latter classifies the current speech situation. The experimental results showed that the proposed algorithm could classify the kinds of speech situations with an accuracy of over 94.4%. Based on these results, we believe that the proposed algorithm can be applied to the hearing aid to improve speech intelligibility in noisy environments.