• 한국관광식음료학회지:관광식음료경영연구
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• 제9권
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• pp.93-116
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• 1998

In the 21st century the service industry, particularly the hospitality industry, has the potential to develop into its golden age. In preparation for this hotels must maximize management proficiency by introducing reasonable and scientific systems into their current operations. The hotel industry takes it for granted that it can meet the final business goal by way of effective management of human resources. However, comprehensive papers on the subject of employee satisfaction have not appeared or been presented in Korean business studies. And although papers from abroad have touched on the subject they are not focused on the specialized domain of human resources as it applies to the comprehensive matters relating to job satisfaction as a corelationship to business success. This study focuses on some problems that must be overcome in achieving business objectives while striving at the same time to maintain satisfaction. The purpose of this study is to find the factors that measure employee job satisfaction in the hotel industry. To establish the purpose I reviewed the definition of the job satisfaction. An antecedent study of job satisfaction and Questionnaires were used to acquire data, specifically, hotel employees were selected randomly from the six super-deluxe hotels in Seoul to respond to thorough questionnaires. As a result of the study on the variables of Sex, Position, Length of Service, Opportunity for Promotion, Working Conditions, Wages and Hotel Situation. As a whole, promotional opportunity, wages and working conditions were frequently cited as negative factors in the responses. A comprehensive approach that includes improving wages and that reflects management's sincere concern with the working conditions of the employees is urgently needed. Hotel management that is willing to examine employee satisfaction periodically and provide proper solutions can prevent dissatisfied employees from separating from their jobs. This study has some limitation in that it is restricted geographically and in research method. That is, only six super-deluxe hotels in Seoul were selected as the subject of study and only the questionnaire method of obtaining data was used out of various available research methods.

• 대한기계학회논문집A
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• 제38권6호
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• pp.619-627
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• 2014

본 논문은 등가정하중을 이용하여 제어시스템을 포함한 구조물의 설계를 위한 최적화 방법을 제안한다. 지난 연구는 구조물과 제어시스템 최적설계를 독립적으로 분리하여 수행하였고, 구조물과 제어시스템을 동시에 최적화하여도 제어시스템의 제어변수는 정상상태에서만 최적화하여 성능을 향상시켰다. 하지만 제어변수는 모든 시간영역에서 최적화해야 한다. 즉, 제어시스템의 해석은 과도상태에서 수행해야 한다. 본 연구에서는 새로운 등가정하중을 이용하여 제어변수를 포함하는 제어시스템 구조물의 최적설계를 위한 방법을 제시하였다. 등가정하중은 동적하중이 구조물에 작용할 때 발생하는 임의 시간에서의 변위장과 동일한 변위장을 만들어내는 정하중을 의미한다. 이렇게 계산된 등가정하중을 이용하여 설계영역에서 선형정적응답 최적설계를 진행한다. 몇 가지 예제를 통해 새로운 등가정하중을 적용한 동적응답 최적설계방법의 유용성을 확인하였다.

• 정보관리학회지
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• 제33권3호
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• pp.287-319
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• 2016

한국군의 해외파병은 국제사회의 일원으로서 세계평화유지에 기여함으로써 대한민국의 위상을 높이고 국가안보를 더욱 굳건하게 하며, 간접적으로는 국방력을 강화하는데 기여하는 등 상당한 의미를 가지는 당대의 사건이라 하겠지만, 관련 기록들에 대한 관리는 제대로 이루어지지 않고 있다. 해외파병업무가 진행되는 동안 생산되는 각종 기록들은 다양한 관련 기관으로 분산되어 관리되고 있어 개별 기록물들에 대한 검색이나 접근이 쉽지 않을 뿐만 아니라 특정 해외파병과 관련된 일련의 기록들을 컬렉션화하는 작업은 더더욱 어렵다. 또한 해외파병과 관련된 기록들은 대부분 공적 프레임의 차원에서 작성된 기록물만을 이관대상으로 하고 있어 일상 아카이브 측면에서의 기록물 생산 및 관리도 필요한 상황이다. 이에 본 연구에서는 한국군 해외파병과 관련된 기록의 현황을 파병절차, 관련 기관 및 파병부대별로 정리하고, 기록관리 측면에서의 문제점을 살펴보고자 한다.

• 셀메드
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• 제3권2호
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• pp.10.1-10.8
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• 2013

Cancer is one of the major dreaded diseases causing high mortality. Lung cancer is second in position of all cancer related deaths and mainly divided into two morphologic sub-types: small-cell lung cancer and non-small cell lung cancer (NSCLC). NSCLC is an aggressive neoplasm which hardly responds to any conventional chemotherapy. Epidermal growth factor receptor (EGFR) belongs to the ErbB family of receptor tyrosine kinase that is mainly over-expressed in NSCLC. EGFR is mainly involved in the pathogenesis and progression of different carcinoma. In vivo and in vitro studies suggest that EGFR and EGF like peptides are often over-expressed in human NSCLC and these proteins are able to induce cell transformation. The conventional therapies mostly inhibit the EGFR activity and expression level in human NSCLC with the use of some EGFR-inhibitors like HKI-272, EKB569, CL-387785 etc. and some synthetic chemotherapeutic drugs like erlotinib, gefitinib, plumbagin, docetaxel, cisplatin etc., alone or in combination of two or more drugs. These therapies selectively act by competitive inhibition of the binding of adenosine triphosphate to the tyrosine kinase domain of the EGFR, resulting in inhibition of the EGFR signaling pathway. But these chemotherapeutic drugs have some cytotoxic activities to the normal cells and have some adverse side-effects. Recent studies on some traditional alternative therapies including some herbal and plant extracts, active ingredients like curcumin, different homeopathic drugs, etc. can target EGFR-signalling in NSCLC with less toxic side-effects are being currently developed.

• Smart Structures and Systems
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• 제16권2호
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• pp.295-328
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• 2015

In recent years the monitoring of structural behavior through acquisition of vibrational data has become common practice. In addition, recent advances in sensor development have made the collection of diverse dynamic information feasible. Other than the commonly collected acceleration information, Global Position System (GPS) receivers and non-contact, optical techniques have also allowed for the synchronous collection of highly accurate displacement data. The fusion of this heterogeneous information is crucial for the successful monitoring and control of structural systems especially when aiming at real-time estimation. This task is not a straightforward one as measurements are inevitably corrupted with some percentage of noise, often leading to imprecise estimation. Quite commonly, the presence of noise in acceleration signals results in drifting estimates of displacement states, as a result of numerical integration. In this study, a new approach based on a time domain identification method, namely the Unscented Kalman Filter (UKF), is proposed for correcting the "drift effect" in displacement or rotation estimates in an online manner, i.e., on the fly as data is attained. The method relies on the introduction of artificial white noise (WN) observations into the filter equations, which is shown to achieve an online correction of the drift issue, thus yielding highly accurate motion data. The proposed approach is demonstrated for two cases; firstly, the illustrative example of a single degree of freedom linear oscillator is examined, where availability of acceleration measurements is exclusively assumed. Secondly, a field inspired implementation is presented for the torsional identification of a tall tower structure, where acceleration measurements are obtained at a high sampling rate and non-collocated GPS displacement measurements are assumed available at a lower sampling rate. A multi-rate Kalman Filter is incorporated into the analysis in order to successfully fuse data sampled at different rates.

• 한국항행학회논문지
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• 제7권2호
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• pp.141-148
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• 2003

본 논문에서는 미상 디지털 통신 신호의 심볼율을 검출하기 위한 기술들을 소개하고 그 성능을 비교해 본다. 심볼율은 delay and multiplier, square law 또는 Hilbert 변환을 이용한 방법 등의 회로를 통과한 신호의 전력스펙트럼 밀도에서 검출해 낼 수 있다. 이러한 회로들을 통과한 신호를 이산 푸리에 변환(discrete Fourier Transform) 한 결과에서 많은 스펙트럼 라인과 복수개의 피크(peak)가 검출되고 그 중 첫 번째 피크가 심볼율을 나타내는 주파수에 위치하게 된다. 만약 해당 심볼율이 아닌 다른 주파수상의 스펙트럼 라인의 값이 첫 번째 피크보다 크다면 심볼율은 잘못 검출될 것이다. 그러므로 첫 번째 피크의 값과 가장 큰 주변 스펙트럼 라인의 값의 비를 이용하여 심볼율 검출기의 성능을 비교하였다. MPSK 변조 방식에서는 -20dB 이하의 Es/N0에서는 delay and multiplier가 가장 우수한 성능을 보였고 -20dB 이상의 Es/N0에서는 Hilbert 변환 방식이 더 좋은 성능을 나타내었다. 또한 QAM 변조 방식에서 delay and multiplier 회로는 낮은 Es/N0에서는 심볼율을 검출할 수 없으며 square law 방식은 MPSK 변조 방식에서 보다 우수한 성능을 나타내었다.

• 사상체질의학회지
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• 제19권1호
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• pp.90-97
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• 2007

1. Objectives and Methods This study was done to investigate the relationships of Sound parameters between Liver Heat Symptom and Esophagus Symptom of Taeumin using PSSC(Phonetic System of Sasang Constitution) in a sentence. Experimental Participants were 20 Korean adult males including, each 10 Liver Heat Symptom and Esophagus Symptom of Taeumin. 2. Results In Pitch segment, APQ segment and Shimmer segment, there were no significant differences between Liver Heat Symptom and Esophagus Symptom of Taeumin. In Octave segment, there were significant differences in Octave 1, Octave 3, Octave 4, Octave 6 of Liver Heat Symptom of Taeumin were significantly high compared with Esophagus Symptom of Taeumin. In Energy segment, FreQ Domain Total Sum / cnt(0), 0k-2k Total Sum,0k-2k sum dev., 2k-4k Total Sum, 2k-4k sum dev., A# Tot E, B__TOT_E, C__TOT_E, C# Tot E, D__TOT_E, A sum dev., A# sum dev., B sum dev., C sum dev., C# sum dev., Dsum dev., D# sum dev., E sum dev., F sum dev., F# sum dev., G sum dev., G# sum dev. of Liver Heat Symptom of Taeumin were significantly high compared with Esophagus Symptom of Taeumin. In Voice Recording time segment, Total Voice Recording Time, Voice Recording Time, Divide By Time3, Divide By Energy10, Total Unit, Max Unit Position, U_0 TO 3 of Liver Heat Symptom of Taeumin were significantly high compared with Esophagus Symptom of Taeumin. 3. Conclusion From above result, there is the postbility of efficiency quide constitutional sx. of Taeumin by Voice characteristics. More Soeumin, Soyangin and Taeyangin Symptoms are needed to determine Sasang Constitution using PSSC and to make PSSC effective.

• Weed & Turfgrass Science
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• 제6권1호
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• pp.28-31
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• 2017

The mutation rate of proline in the position 197 (Pro197) in acetohydroxy acid synthase (AHAS) is highest among sulfonylurea (SU) herbicide-resistance mutants. Therefore, it is significant to investigate the resistance mechanism for the mutation and to develop the herbicides specific to the mutants. SU herbicide resistance mechanism of the mutants, 197Ser, 197Thr and 197Ala, in AHAS were targeted for designing new SU-herbicide. We did molecular dynamics (MD) simulation for understanding SU herbicide-resistance mechanisms of AHAS mutants and designed new herbicides with docking and MD evaluations. We have found that mutation to 197Ala and 197Ser enlarged the entrance of the active site, while 197Thr contracted. Map of the root mean square derivation (RMSD) and radius gyrations (Rg) revealed the domain indicating the conformations for herbicide resistant. Based on the enlarging-contracting mechanism of active site entrance, we designed new herbicides with substitution at the heterocyclic moiety of a SU herbicide for the complementary binding to the changed active site entrances of mutants, and designed new herbicides. We confirmed that our screened new herbicides bonded to both AHAS wild type and mutants with higher affinity, showing more stable binding conformation than the existing herbicides.

• 한국직업건강간호학회지
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• 제21권3호
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• pp.308-316
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• 2012

Purpose: The purpose of this study was to describe the perception and practice of hospital infection control of nursing staff in long-term care hospitals by the level of supplementation of nurses. Methods: The participants were 212 nurses and nurse assistants in 13 long-term care hospitals in a metropolitan city and the data were gathered by self-reported questionnaires during August 2011 and analyzed by SPSS/WIN program. Results: The beds per a nurse were 15, and the proportion of nurses among nursing staff in long-term care hospitals was about 33%. In general, the level of infection control in practice was lower than that of perception. The highest perception and practice domain was 'Management of disinfection/contamination', and the lower level domains were 'Personal hygiene' and 'Hand washing' There were statistically significant differences in the hospital infection control of perception and practice depending on age, education, career in long-term care hospital, job position, the quantity of beds, nurse, and nurse assistant, beds per a nurse and proportion of nurses in hospitals. Conclusion: According to these results, the systematic and continual education on hospital infection control of the nursing staff in long-term hospitals should be carried out. In addition, the policy to add more nurses into long-term care hospitals must be implemented.

• 한국정보통신학회논문지
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• 제14권1호
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• pp.145-155
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• 2010

본 연구는 키워드 기반의 단순 검색이 아닌 개념의 관계와 추론을 통해 연관정보 및 계층 정보를 함께 보여 줄 수 있는 수산용의약품 도메인 온톨로지 구축 방안을 제안한다. 이를 위해 수산분야 종사자들로부터 적합성질문 목록을 조사하여 개념 및 용어를 도출하는 선행과정을 수행한다. 다음으로 온톨로지 언어인 OWL을 지원하는 Protege-OWL 편집기를 이용하여 온톨로지 모델링 과정을 기술한다. 그리고 마지막으로 구축된 온톨로지를 통해 사용자들이 수산용의약품에 대한 관련 정보를 쉽게 찾아갈 수 있는 사용자 인터페이스를 제안한다. 이는 수산용의약품과 연관된 질병, 어종, 약품평가 내역을 다른 위치로 이동하지 않고 한 화면 내에서 확인 할 수 있게 됨으로써 관련 전공학생, 수산질병관리사, 양식어민들에게 필요한 정보에 대한 효과적인 검색 방법을 제공한다.