• 정보보호학회논문지
• /
• 제26권3호
• /
• pp.757-767
• /
• 2016

패스워드 인증은 가장 대표적인 사용자 인증 기법이며 그 중에서 특히 문자 기반 패스워드가 가장 많이 사용되고 있다. 그러나 사용자들이 선택하는 패스워드가 갖는 취약성으로 인하여 사용자로 하여금 강한 패스워드 생성을 유도하기 위해 많은 웹사이트에서는 패스워드 강도를 측정하는 패스워드 미터를 제공하고 있다. 하지만 여기에는 패스워드 미터결과가 일관되지 않고, 정확하지 않은 강도로 피드백하는 문제가 있다. 이에 본 논문에서는 패스워드 미터의 문제점에 대해 알아보며 패스워드 미터의 개선 방향을 제시하고자 한다.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2003년도 춘계학술대회 논문집
• /
• pp.409-414
• /
• 2003

In this study we examined the method to select the size of the conductor rail for light rail system. Study results shows that using the conductor rail with lower resistivity requires fewer power substation, which results in lower construction cost. It also produces less copper loss. Therefore first choose the conductor rail with lowest resistivity and select the substation location, Next conduct computer simulation study to confirm it meets voltage requirement. if the minimum voltage is well above the required minimum voltage, substation number can probably be further reduced.

• 경영과정보연구
• /
• 제31권4호
• /
• pp.433-444
• /
• 2012

본 연구의 목적은 계층적 분석 기법을 이용한 비즈니스 프로세스 관리 시스템(BPMS)의 평가 모형을 개발하는 것이다. 이를 위해 전문가 집단으로부터 BPMS 솔루션 선택을 위한 기준을 도출하였으며, 이 기준들의 쌍대비교를 통해 AHP 기반의 분석 모형을 개발하였다. 분석모형을 통해 기업이 원하는 BPMS 솔루션을 선택할 수 있으며, 이는 기업의 프로세스 관리 능력 제고에 기여할 수 있을 것이다.

• 한국컴퓨터정보학회논문지
• /
• 제4권3호
• /
• pp.47-52
• /
• 1999

마이크로 프로세서와 DSP(Digital Signal Process)의 성능에 매우 중요한 역할을 하는 가산기는 어떠한 캐리 생성 방식을 적용하느냐에 따라 그 성능이 크게 좌우된다. 이에 본 논문에서는 연산속도 면에서 우수한 캐리 륵어헤드 방식(Carry Look-ahead Algorithm)과 면적 면에서 우수한 캐리 선택 방식(Carry Select Algorithm)을 이용하였으며, 이 두 방식의 최적조합을 적용하여 고속 64비트 가산기를 설계하였다. 따라서 본 논문은 연산속도와 면적을 모두 개선한 최적의 CLSA(Carry Look-ahead Select Adder) 방식을 제안하였으며. 시뮬레이션을 통하여 설계된 회로의 우수성을 입증하였다.

• 한국정밀공학회지
• /
• 제16권11호
• /
• pp.36-46
• /
• 1999

This paper proposes a redesign procedure for assemblability and automatic assembly of an automobile heater blower motor. According to the procedure, redesign alternatives are generated, then the alternatives are evaluated by a weighted objectives method to select one optimal redesign alternative. First, the redesign objectives are identified and the assemblability of the current motor is evaluated to decide redesign rules. Finally, the redesign variants and alternatives are generated using the redesign criteria. This information is then evaluated to select an optimal alternative, determined by weighted evaluation criteria which is established in advance.

• 한국정밀공학회지
• /
• 제12권9호
• /
• pp.59-65
• /
• 1995

The cam is used to a main component in a variety of automatic machines and instruments. To meet the demand of a complicated operation and of reducing weight for automatic machine, Curve Blending Technology, in which each of the basic curves suitable for individual interval is connected, is used for the cam design. In the curve blending, it is necessary to select appropriate elementary curve for each interval and to confirm the dynamic continuity at connecting points between adjoining elementary curves. This paper represented the elementary curve selection method to select an appropriate curve for each interval, and executed computation for the follower displacement and angular displacement of each interval. The paper made an analysis and examine closely for elementary curves to synthesizing curve blending, and it performed dynamic conditions clearly at every points on the cam motions. Therefore the curve blending technology presented by the paper turned into easier work.

• 수산해양기술연구
• /
• 제56권3호
• /
• pp.193-201
• /
• 2020

The mesh selectivity of a drum shaped pot for finely-striate buccinum (Buccinum striatissimum) was conducted a total of eight times with four different mesh sizes (22, 35, 50 and 60 mm) from May to September, 2019 in the eastern coastal waters of Korea. The size selectivity analysis was estimated by the SELECT method to express logistic selectivity curves. In the results, the catch of finely-striate buccinum was occupied about 90% in the total catch weight. The equation of the master curve of selectivity was estimated to s(R) = exp(-7.778R+9.983)/[1+exp(-7.778R+9.983)]. The relative shell height of 50% selection was 1.284 and the selection range (SR) was 0.282. The optimal mesh size for 50% selection on the minimum maturation size (75 mm, Shell height) was estimated more than 60 mm by the master selectivity curve.

• 정보과학회 컴퓨팅의 실제 논문지
• /
• 제24권1호
• /
• pp.46-52
• /
• 2018

소프트웨어 메트릭은 소프트웨어를 평가하기 위한 방법으로, 소프트웨어의 개발 비용을 줄이고 품질을 향상시키는데 큰 역할을 하고 있다. 하지만 다양한 소프트웨어 메트릭이 등장하면서 적재적소에 사용하기 위한 메트릭 선택 문제가 발생했고, 이를 해결하고자 다양한 방법들이 연구되었다. 하지만 기존 연구들은 사용자의 높은 개입을 요구함으로써 여전히 메트릭 선택의 어려움을 가지고 있다. 따라서 본 논문에서는 사용자의 개입을 최소화하기 위해 가중치 표현을 지양하고 메트릭 및 메트릭 도구에 대한 다양한 특성을 선택 기준으로 사용하여, 메트릭 및 메트릭 도구 선택에 도움을 주는 방법을 제안한다.

• International Journal of Fuzzy Logic and Intelligent Systems
• /
• 제13권1호
• /
• pp.12-18
• /
• 2013

Motor imagery classification in electroencephalography (EEG)-based brain-computer interface (BCI) systems is an important research area. To simplify the complexity of the classification, selected power bands and electrode channels have been widely used to extract and select features from raw EEG signals, but there is still a loss in classification accuracy in the state-of- the-art approaches. To solve this problem, we propose a discriminative feature extraction algorithm based on power bands with principle component analysis (PCA). First, the raw EEG signals from the motor cortex area were filtered using a bandpass filter with ${\mu}$ and ${\beta}$ bands. This research considered the power bands within a 0.4 second epoch to select the optimal feature space region. Next, the total feature dimensions were reduced by PCA and transformed into a final feature vector set. The selected features were classified by applying a support vector machine (SVM). The proposed method was compared with a state-of-art power band feature and shown to improve classification accuracy.

• 대한전기학회논문지:전력기술부문A
• /
• 제53권11호
• /
• pp.630-635
• /
• 2004

Generation companies(Genco) submit the supply functions as a bidding function to a bid market in a competitive electricity market. The profits of Gencos vary in accordance with the bid functions, so the selection of a bidding function plays a key role in increasing their profits. In order to get a profitable bidding function which is usually linear, it is required to modify adequately the intersection and the slope of a linear supply function. This paper presents an analysis of the selection of the supply function from the viewpoint of Nash equilibrium(NE). Four types of bidding function parameters are used for analizing the electricity market. The competition of selecting bidding parameters is modeled as two level games in this research. One is a subgame where a certain type of parameters is given and the players compete to select values of the underlying parameters. The other is an overall game where the players compete to select a profitable type among the four types of parameters. The NEs in both games are computed by an using analytic method and a payoff matrix method. It is verified in case studies for the NE of overall game to satisfy the equilibrium condition.