• The KIPS Transactions:PartC
• /
• v.17C no.4
• /
• pp.361-370
• /
• 2010

OTP(One Time Password) is a user authentication using secure mechanism to authenticate each other in a way to generate a password, an attacker could intercept the password to masquerade as legitimate users is a way to prevent attacks. The OTP can be implemented as H/W or S/W. Token and card type OTP, implemented as H/W, is difficult to popularize because of having problem with deployment and usability. As a way to replace it implemented as S/W on Mobile or PC is introduced. However, S/W products can be target of malicious attacks if S/W products have vulnerability of implementation. In fact, FSA said the OTP implemented on a mobile have vulnerability of implementation. However, the OTP implemented on a PC have no case about analysis of vulnerability. So, in this paper derive security review and vulnerabilities analysis of implemented on a PC.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.43 no.6
• /
• pp.943-954
• /
• 2014

The purpose of this study was to gather basic data and measure job satisfaction and job engagement of dietitians and nutrition teachers in Chungbuk area. This study was conducted on 20 August, 2010. Out of 336 questionnaires, 266 were completed and made available for the purpose of statistical evaluation. As the main results, job satisfaction was classified into eight categories: task, wage, policies related to tasks, professional growth, promotion, relationships with colleagues, working environment, and supervision. In the case of wage, promotion, and policies related to tasks, the average scores of job satisfaction were around 2 points out of 5. Dietitians' job satisfaction levels according to employment type and school type significantly differed. In terms of job involvement and organizational commitment, average scores were 3.53 points and 3.12 points respectively. The survey showed significantly different results for job involvement and organizational commitment, depending on employment type, school type, and status as chef in charge or trainee. Dietitians working in elementary schools, as chef in charge, or with permanent employment showed higher job involvement and organizational commitment. Furthermore, there was a significantly positive correlation between factors such as task, wage, promotion, relationships with colleagues, supervision, work environment, policies related to tasks, professional growth, and job satisfaction.

• The Korean Journal of Mycology
• /
• v.46 no.2
• /
• pp.193-199
• /
• 2018

The fungus, Podosphaera pannosa, was identified in 1991 as the cause of powdery mildew symptoms on peach (Prunus persica var. persica) fruit from Korea based on the morphological characteristics of the conidial state. Recently, however, in Serbia and France, the cause of 'rusty spot' found on peach fruit was identified as P. leucotricha, and the cause of 'powdery mildew' on nectarine (Prunus persica var. nucipersica) fruit was identified as P. pannosa. To confirm the identity of the Korean pathogen, we collected four samples of powdery mildew from Korean peach fruit: three with the 'powdery mildew' symptom and one with the 'rusty spot' symptom. Morphological examination of the four samples confirmed P. pannosa as the pathogen. Internal transcribed spacer sequences of rDNA were analyzed for molecular characterization. A phylogenetic tree showed that the Korean isolates were clustered into a clade containing P. pannosa from Rosa species, with high sequence similarities of more than 99%. Thus, we showed that the powdery mildew and rusty spot symptoms on peach fruits from Korea are associated with P. pannosa.

• Korean Journal of Culture and Social Issue
• /
• v.22 no.3
• /
• pp.455-485
• /
• 2016

The purpose of this research is to investigate adult's perception of elderly parents care and differences of related variables between family structures. There were 1,258 participants(age 45; male=601, female=657; 1,111=nuclear, 147=extended). The measures yielded Cronbach α=.67~.95, inter-judger reliability= 95.1%, Kappa=.95. The results showed that, first, there were no significant differences between two family structures in terms of SES excepting academic career. Second, there were significant differences between two family structures in family relation, psychological characteristics. That is, adults in the extended family, versus those in the nuclear family, provide greater emotional support to children, sacrificed more towards children, and have greater expectations for children supporting them when they retire. Also, adults in the extended family displayed greater self-efficacy and happiness. Third, there were significant differences between two family structures in caring for elderly parents. Adults in the extended family apportioned a greater parent's allowance, and more number of meals with parents, and spent more time talking with parents, and displayed greater degree of filial piety and more caring behavior towards parents. Fourth, as for the perception of caring for elderly parents according to family structure, when adults were asked about "the best way to care for parents", the most frequent response was providing a peace-of-mind for parents. As for "the most difficult aspect of caring for parents", differences in opinions followed by financial difficulty were the most. As for "the best aspects of caring for parents", the most frequent responses were good for children's upbringing and family harmony. Based on the results, suggestions for further research have been discussed.

• Animal Systematics, Evolution and Diversity
• /
• v.3 no.1
• /
• pp.41-50
• /
• 1987

The osteological characters of Aphyocypris chinensis of subfamily Leuciscinae were examined and the systematic position of this species is discussed through comparison with other species of subfamilies Leucisicinae and Cultrinae. Numbers of the dorsal an danal fin ray, having no symphyseal knob and barbels and separation between dermosphenotic and supraorbital, are in acord with those of subfamily Leuciscine, and the abdominal keel and trigemino-facial nerve foramen of the prootic are more closely related with those of subfamily Cultrinae. But several diagnostic characters detected only in this species are as follows ; 4 infraorbitals, the shape of ethmoid, 5-6 hypurals, the broad orbital width, having no extrascapular, incomplete lateral line and considerable small size.

• Proceedings of the Korean Nuclear Society Conference
• /
• 1996.05b
• /
• pp.298-303
• /
• 1996

액체금속로 IHX 의 열전달 해석모형을 개발하기 위한 일차적인 단계로서 교차류 열전달 모형특성에 대한 연구를 수행하였는 그 주요내용은 새로운 대수화 (finite differencing) 기법인 경계점 기법의 특성을 분석하여 이기법의 적절성을 확인하고 IHX 기하형태 및 운전 요건에 따른 격자수에 대한 요건을 분석하고 이로부터 IHX 해석에 간이 이차원 해석 모형 사용의 타당성을 확인하였다.

• 한국도로학회지:도로
• /
• v.19 no.4
• /
• pp.66-75
• /
• 2017

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.34 no.3
• /
• pp.243-251
• /
• 2016

LiDAR data processing steps include noise removal, filtering, classification, segmentation, shape recognition, modeling, and quality assessment. This paper focuses on modeling and accuracy evaluation of 3D objects with curved surfaces. The appropriate modeling functions were determined by analyzing surface patch shape. Existing methods for modeling curved surface features require linearization, initial approximation, and iteration of the non-linear functions. However, proposed method could directly estimate the unknown parameters of the modeling functions. The results demonstrate feasibility of the proposed method. The proposed method was applied to the simulated and real building data of hemi-spherical and semi-cylindrical surfaces. The parameters and accuracy of the modeling functions were estimated. It is expected that the proposed method would contribute to automatic modeling of various objects.

• Journal of The Korean Association For Science Education
• /
• v.37 no.5
• /
• pp.799-812
• /
• 2017

Energy as a powerful and unifying concept to understand natural world has been regarded as one of the key concepts of the science curricula in many countries. However, concerning learning and teaching of energy, various difficulties have been reported widely. This study aimed at analyzing and comparing science curricula of Korea, the U.S., England, and Singapore regarding energy to identify the potential issues for energy curriculum in the future. 2015 revised Korean science curriculum, Next Generation Science Standards of the U.S., Science programmes of study of England, and the Science syllabus of Singapore were compared based on six basic elements of the concept of energy: energy form, energy resource, energy transfer, energy transformation, energy conservation, and energy dissipation. Achievement criteria that include energy were extracted from all curricula and categorized into the six elements. The frequency and distribution of the six elements in the four curricula were compared in terms of school levels and disciplinary areas. Contents of six energy elements were also compared. Though all curricula emphasized energy as a key science concept, we found many differences in the degree of emphasis of basic ideas and specific contents and approaches. Korean curriculum is characterized by 1) high frequency concerning energy form among the elements of the concept of energy, 2) introducing energy forms of unclear meaning, which are not linked with other physical quantities, 3) emphasis on energy conversion in comparison of energy transfer, 4) focusing on mechanical energy conservation instead of more general energy conservation, and 5) absence of the concept of 'system' concerning energy. Issues for energy curriculum development were discussed.

• Journal of Convergence for Information Technology
• /
• v.8 no.2
• /
• pp.1-9
• /
• 2018

This study describes predictive factors for elderly suicidal ideation by analyzing the survey data from 359 people who were over 65 years old in Daegu, Korea. The mean score of social support(3.35), self-esteem(3.38), depression(8.64) and suicidal ideation(1.65) of elderly residence. Social support, self-esteem and suicidal ideation had negative correlation. Depression and suicidal ideation had positive correlation. Suicidal ideation was significantly different according to age, education, spouse, living arrangement, type of medical guarantee, pocket money, past job, leisure(time), health status, number of chronic disease, smoking. Others support, self-esteem, pocket money, education, age were influencing factors of suicidal ideation(48.2%). Among them, 41.8% of others support was.