• 지식경영연구
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• 제11권1호
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• pp.65-81
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• 2010

This paper explores the determinants of the economic value of patents using a survival time analysis. The analysis is based on renewal information of about 250,000 patents filed from 1984 to 2005 in the Korea Intellectual Property Office. A patent right is valid only when its owner pays yearly maintenance fees. Failure to pay causes patent rights to be lapsed. We use the fact that more valued patents live longer and the lengths of their renewals can be closely related to their value. The value can be affected not only by its own technological aspects such as quality and breadth, but also by characteristics of its owners such as innovativeness and age. This paper presents patent-specific and firm-specific characteristics which influence patent value. The result of analysis implies that patent value depends on both the technological contents of the patent and general capabilities of a firm.

• 한국융합학회논문지
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• 제12권11호
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• pp.247-256
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• 2021

사회경제의 부단한 진보와 발전에 따라 상품 포장의 중요성은 나날이 현저해지고 있으며, 그것은 이미 사업자와 소비자 사이의 중요한 의사소통 형식이 되어, 사업자 간의 중요한 경쟁 수단이 되었다. 이 논문의 연구범위는: 우선 문헌 조사를 통해 포장설계의 기능과 소비자의 구매 태도를 분석하고 일반 초콜릿 포장과 여행기념품 초콜릿 포장을 대상으로 이름, 색상, 로고, 일러스트 등을 분석·연구했다. 연구방법은: 설문 조사를 통해 패키지 디자인에 대한 소비자의 구매 태도 및 개인의 가치 구현에 따라 소비자의 구매 여력과 패키지 디자인이 구매 조건에 미치는 영향과 연구를 심층적으로 살펴봤다. 본 연구의 결과, 첫째, 일반 초콜릿 포장과 여행기념품 초콜릿 포장부터 소비자 소비 현상까지 보면 일반 초콜릿이 더 선호된다. 둘째, 소비자가 제품을 구매할 때 초콜릿의 맛은 제품 패키지 디자인보다 중요한 속성이다. 셋째, 각 제품군에서 소비자들은 초콜릿 제품을 살 때 자신의 지향적인 가치를 중시한다. 넷째, 패키지 디자인과 맛이라는 두 가지 중요한 속성 아래 일반 초콜릿은 여행기념품 초콜릿보다 구매 의도가 높다.

• 대한영상의학회지
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• 제79권6호
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• pp.348-353
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• 2018

간의 가성 림프종은 비종양성 림프구의 절 외 과다증식에 의해 형성되는 드문 양성 종양이다. 검색한 바에 따르면 현재까지 영문으로 46예가 보고되었다. 우리는 75세 여자환자에서 과혈관성 종양으로 오인된 간의 가성 림프종 증례를 보고하고자 한다. 조직검사상 직장의 신경내분비 암종이 진단된 후 시행한 조영증강 전산화단층촬영에서 1.0 cm 크기의 경계가 불분명하고 낮은 감쇄를 보이는 결절이 간에 관찰되었다. 자기공명영상에서는 동맥 조영기에 조영 증강을 보이고, 20분 지연기 조영 영상에서 저신호 강도를 보이며, 확산강조영상에서 고신호 강도를 보였다. Fluorodeoxyglucose (이하 FDG) positron emission tomography (PET)/CT에서는 FDG의 섭취 증가를 보였다. 초음파에서는 저에코성 병변으로 관찰되었고, 초음파 유도 하 조직검사를 통하여 간의 가성 림프종으로 확진 되었다.

• Journal of the Korean Statistical Society
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• 제13권1호
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• pp.57-68
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• 1984

A method of missing value estimation for a general design is descrived. In particular, the cases of missing value estimation for $2^k$ and $3^k$ design are explored and discussed. Some examples are illustrated to show the missing value estimation and the nonestimatimable cases.

• Journal of applied mathematics & informatics
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• 제30권5_6호
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• pp.773-785
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• 2012

In this paper, we establish sufficient conditions for the existence and uniqueness of solutions to a general class of three-point boundary value problems for a coupled system of nonlinear fractional differential equations. The differential operator is taken in the Caputo fractional derivatives. By using Green's function, we transform the derivative systems into equivalent integral systems. The existence is based on Schauder fixed point theorem and contraction mapping principle. Finally, some examples are given to show the applicability of our results.

• 대한간호학회지
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• 제25권2호
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• pp.279-294
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• 1995

The purpose of this study was to determine values and value changes in clinical nurses in clinical situations. A survey was conducted of 200 nurses of one of university hospital in Seoul Korea. This study was conducted between July 1 and July 5, 1994, using the Survey of Interpersonal Values (SIV) developed by L. V. Gordon, and standardized for Korea by Kyung Hye Lee & Eung Yun Hwang. The results of the study were as follows, 1. The clinical nurses surveyed showed Independence(18.32 : 63rd percentile) as their highest value, with Support(14.8 : 62nd percentile) next and then Benevolence(16.28 53rd percentile), Leadership(9.06 : 46th percentile), Conformity(18.15 : 42nd percentile) and Recognition(18.32 : 41s1 percentile) in that order in the area of general values. Using a standardised women's value Indicator, the clinical nurses value orientation was within the 32nd∼69th percentile indicating means found among Korean women in general. 2. Looking at how the values were related to demographics, Leadership was most highly valued among the 30∼34 year olds and least valued among the 25∼29 year olds. Unmarried nurses valued Independence more than married nurses did, and junior college graduate nurses valued Conformity more than baccalaureate graduate nurses did. 3. The study showed that the values of with less than one year (16.00) clinical experience were higher than those who had over 10 years (13.60) clinical experience (p<.05). Therefore clinical experience did not positively influence value orientation for clinical nurses. 4. There was no significant differences in the value of nurses in relation to their workplace, their level of motivation, or their aptitude. The study shows that clinical nurses have similar values compared with ordinary Korean women. This means that professional nurses may not be able to satisfy client needs and also that they do not have satisfaction and a positive attitude regarding the nursing profession. Therefore it is suggested that new strategies and continuing education programs be established to help clinical nurses fomulate higher values.

• 한국정보통신학회논문지
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• 제7권2호
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• pp.284-292
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• 2003

본 논문에서는 LMS 알고리즘을 이용하여 적응 시스템을 제어하는 경우, 최적 매개변수의 선택 폭을 늘리기 위한 초기치의 설정방법의 수치적 검토를 행했다. 초기치 설정은 대략의 값을 임의적으로 선택하는 일반적인 방법과 직접법에 의해 얻어진 근사적인 해를 초기치로서 가하는 방법을 이용하였으며, 이들을 최적지향성합성 문제에 적용하여 초기치가 매개변수의 선택 폭, 자승평균오차의 수렴속도, 그리고 수렴과정에서의 안정성 등에 미치는 영향을 비교하였다. 수치실험결과, 직접법을 이용한 초기치 선택방법은 일반적인 선택방법에 비해 매개변수의 선택 폭이 넓어짐은 물론 수렴성, 안정성 그리고 오차 개선 능력도 탁월함을 나타내었다.

• 실천공학교육논문지
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• 제11권2호
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• pp.305-311
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• 2019

많은 대학에서 학생 보상 프로그램의 일환으로 마일리지 제도를 시행하고 있다. 마일리지 제도는 교내외 비교과 프로그램에 참여한 학생들에게 마일리지를 지급하고, 획득한 마일리지에 따라 성적과 관계없이 장학금을 차등 지급하는 것이다. 본 연구는 대학 마일리지 제도에 대한 학생들의 가치지각이 충성도에 미치는 영향을 확인하고, 마일리지 혜택을 받은 집단과 그렇지 않은 집단 간 차이가 있는지 비교하고자 한다. 이를 위해 대학 마일리지에 대한 가치지각을 경제적 유용성, 심리적 유용성, 이용혜택의 다양성, 편리성, 적절성으로 구분하여 충성도 간 영향력을 실증적으로 확인하였다. 연구결과 심리적 유용성, 이용혜택의 다양성, 적절성이 충성도에 긍정적인 영향을 미치는 반면, 경제적 유용성, 편리성은 유의한 영향을 미치지 않는 것으로 확인되었다. 또한 경제적 유용성이 충성도에 미치는 영향은 마일리지 혜택을 받은 집단이 받지 않은 집단보다 높게 나타났고, 적절성이 충성도에 미치는 영향은 마일리지 혜택을 받지 않은 집단이 받은 집단보다 높게 나타났다.

• 무역상무연구
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• 제66권
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• pp.149-170
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• 2015

State's compensation obligation accompanied in case of indirect expropriation of foreign investor's investment asset has been established definite principle under international investment law. But the concrete and unified application criterion regarding valuation methods for measuring compensation have not been established yet. The World Bank investment guideline is adopting the Hull's Formula, which is understood as the full compensation standard with prompt adequate effective compensation and Fair Market Value method. It is a general principle that compensation should be equal to the fair market value of investment asset just before indirect expropriation date. However, there is a problem of the valuation method of fair market value of investment asset. In general, discounted cash flow, liquidation value, replacement value, book value, etc. can be the applicable standards. Arbitral tribunals determine compensation by adopting proper valuation method on a case-by-case basis according to the discretion based on the arbitration parties' experts' review on the presented opinion and by considering fact relevance of the issued dispute. This compensation includes also interest, recently it tends to award according to compound interest rather than simple interest. Beginning of the period to generate interest is the next day of the indirect expropriation occurrence date. And it should be considered that interest until the payment of compensation is also included. In addition, it should be considered that mental damages is available only when there's a basis to prove this or special case. Therefore, this study suggests to review of precedents related to indirect expropriation and concretely specify compensation valuation standard and method of indirect expropriation on investment agreements through enough consultation beforehand.

• Asian Pacific Journal of Cancer Prevention
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• 제15권15호
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• pp.6295-6300
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• 2014

Our aim was to investigate the value of combined detection of serum carcinoembryonic antigen (CEA), carbohydrate antigen (CA) 19-9, CA 242 and CA 50 in diagnosis and assessment of prognosis in consecutive gastric cancer patients. Clinical data including preoperative serum CEA, CA 19-9, CA 242, and CA 50 values and information on clinical pathological factors were collected and analyzed retrospectively. Univariate and multivariate survival analyses were used to explore the relationship between tumor markers and survival. Positive rates of tumor markers CEA, CA 19-9, CA 242 and CA 50 in the diagnosis of gastric cancer were 17.7, 17.1, 20.4 and 13.8%, respectively, and the positive rate for all four markers combined was 36.6%. Patients with elevated preoperative serum concentrations of CEA, CA 19-9, CA 242 and CA 50, had late clinical tumor stage and significantly poorer overall survival. Five-year survival rates in patients with elevated CEA, CA 19-9, CA 242 and CA 50 were 28.1, 25.8, 27.0 and 24.1%, respectively, compared with 55.0, 55.4, 56.4 and 54.5% in patients with these markers at normal levels (p<0.01). In multivariate Cox proportional hazards analyses, an elevated CA 242 level was determined to be an independent prognostic marker in gastric cancer patients. Combined detection of four tumor markers increased the positive rate for gastric cancer diagnosis. CA 242 showed higher diagnostic value and CA 50 showed lower diagnostic value. In resectable gastric carcinoma, preoperative CA 242 level was associated with disease stage, and was found to be a significant independent prognostic marker in gastric cancer patients.