• Korean Journal of Community Nutrition
• /
• v.7 no.2
• /
• pp.245-256
• /
• 2002

This study was carried out to examine Koreans preference in mushrooms, their nutritional knowledge of mushrooms as a source of Vitamin D, and five characteristics of six dishes consisting of common dishes and mushroom dishes. The data were collected from 2,777 subjects in various age ranges by means of a survey questionnaire. Variables, such as age, gender, diet quality and the degree of interest in diet were significant factors considered in relation to preference of mushrooms. Adults ate mushrooms because of their healthfulness, but this attibute was not a factor among adolescent students. The level of nutritional knowledge was relatively low and the ratio of "do not know" responses was higher than the ratio of "yes" or "no" . Generally, housewives, elementary school children and those who were healthy, ate floods because of health consciousness, and those who preferred mushrooms had better dietary habits. The characteristics of mushroom dishes, both as main and side dishes, had much more correlation with the factors considered for the subjects than the common dishes and one dish meals, respectively. Dietary altitudes, such as mushroom preference, frequency of mushroom intake and level of nutritional knowledge, were strongly correlated with the characteristics of the six dishes. It has been shown that mushroom dishes were recognized as nutritional, rather than delicious.

• Journal of the Korea Society of Computer and Information
• /
• v.27 no.9
• /
• pp.131-138
• /
• 2022

In this paper, we propose an FA-RBAC (FA-RBAC) model based on flexible properties. This model is assigned attribute-role-centric, making it easy to manage objects, as efficient as access control, and as the network environment changes, it can provide flexible access control. In addition, fine-grained permissions and simple access control can be achieved while balancing the advantages and disadvantages of the RBAC and ABAC models, reducing the number of access control rules by combining static attribute-based roles and dynamic attribute-based rules, and verifying the validity and performance benefits of the proposed model through comparison analysis and simulation.

• Journal of the Korea Society of Computer and Information
• /
• v.27 no.2
• /
• pp.107-114
• /
• 2022

Delegation is a powerful mechanism that allocates access rights to users to provide flexible and dynamic access control decisions. It is also particularly useful in a distributed environment. Among the representative delegation models, the RBDM0 and RDM2000 models are role delegation as the user to user delegation. However, In RBAC, the concept of inheritance of the role class is not well harmonized with the management rules of the actual corporate organization. In this paper, we propose an Adding Attributes on Permission-Based Delegation Model (ABDM) that guarantees the permanence of delegated permissions. It does not violate the separation of duty and security principle of least privilege. ABDM based on RBAC model, supports both the role to role and user to user delegation with an attribute. whenever the delegator wants the permission can be withdrawn, and A delegator can give permission to a delegatee.