• Korean Journal of Food Science and Technology
• /
• v.53 no.6
• /
• pp.785-791
• /
• 2021

Many lactic acid bacteria (LAB) have probiotic properties that exert various health benefits. In this study, the reduction potential of nitrogen oxide compounds and ferric ions by six LAB, including Lactobacillus kimchicus, L. lactis, L. casei, L. plantarum, L. rhamnosus GG, and Leuconostoc mesenteroides were evaluated. The L. kimchicus strain produced a substantial amount of nitrite reduced from nitrate added to the media, whereas the other five LAB strains did not. L. kimchicus also showed the most potent reducing activity of ferric to ferrous ions. However, the reduction potential of the autoclaved L. kimchicus was little pronounced. The scavenging activities of viable LAB or their cell lysates against different radicals were not consistent with the potency of the LAB's reducing ability. The present results indicate that L. kimchicus has a strong reduction potential for nitrogen oxides in viable status, and that this ability can be used as a probiotic property for various health benefits.

• Journal of Digital Convergence
• /
• v.12 no.7
• /
• pp.95-101
• /
• 2014

In this study, we look at the current state of the inheritance system of family business in korea, you are trying to present a remedy for the activation of family business succession. The family business inheritance tax assistance benefits at the time, it is necessary to define the effect that offers the advantage of tax support to reflect correctly, the scope of its application subject property, easy to match the requirements of the family business succession is family business succession Small Business issue of effectiveness of the system has not emerged, there is a need to strengthen the requirements of family business succession that takes into account the reality of small and medium-sized enterprises. In addition, if you provide the inheritance tax deduction for the inheritance of the family business, only to inherit the family business of a substantial tax advantages help to move back, the provisions of the post-management is necessary.

• International Journal of Concrete Structures and Materials
• /
• v.8 no.4
• /
• pp.289-299
• /
• 2014

Alkali-activated slag concretes are being extensively researched because of its potential sustainability-related benefits. For such concretes to be implemented in large scale concrete applications such as infrastructural and building elements, it is essential to understand its early and long-term performance characteristics vis-a'-vis conventional ordinary portland cement (OPC) based concretes. This paper presents a comprehensive study of the property and performance features including early-age isothermal calorimetric response, compressive strength development with time, microstructural features such as the pore volume and representative pore size, and accelerated chloride transport resistance of OPC and alkali-activated binder systems. Slag mixtures activated using sodium silicate solution ($SiO_2$-to-$Na_2O$ ratio or $M_s$ of 1-2) to provide a total alkalinity of 0.05 ($Na_2O$-to-binder ratio) are compared with OPC mixtures with and without partial cement replacement with Class F fly ash (20 % by mass) or silica fume (6 % by mass). Major similarities are noted between these binder systems for: (1) calorimetric response with respect to the presence of features even though the locations and peaks vary based on $M_s$, (2) compressive strength and its development, (3) total porosity and pore size, and (4) rapid chloride permeability and non-steady state migration coefficients. Moreover, electrical impedance based circuit models are used to bring out the microstructural features (resistance of the connected pores, and capacitances of the solid phase and pore-solid interface) that are similar in conventional OPC and alkali-activated slag concretes. This study thus demonstrates that performance-equivalent alkali-activated slag systems that are more sustainable from energy and environmental standpoints can be proportioned.

• Journal of Information Processing Systems
• /
• v.7 no.2
• /
• pp.221-240
• /
• 2011

Vehicular networks are a promising application of mobile ad hoc networks. In this paper, we introduce an efficient broadcast technique, called CB-S (Cell Broadcast for Streets), for vehicular networks with occlusions such as skyscrapers. In this environment, the road network is fragmented into cells such that nodes in a cell can communicate with any node within a two cell distance. Each mobile node is equipped with a GPS (Global Positioning System) unit and a map of the cells. The cell map has information about the cells including their identifier and the coordinates of the upper-right and lower-left corner of each cell. CB-S has the following desirable property. Broadcast of a message is performed by rebroadcasting the message from every other cell in the terrain. This characteristic allows CB-S to achieve an efficient performance. Our simulation results indicate that messages always reach all nodes in the wireless network. This perfect coverage is achieved with minimal overhead. That is, CB-S uses a low number of nodes to disseminate the data packets as quickly as probabilistically possible. This efficiency gives it the advantage of low delay. To show these benefits, we give simulations results to compare CB-S with four other broadcast techniques. In practice, CB-S can be used for information dissemination, or to reduce the high cost of destination discovery in routing protocols. By also specify the radius of affected zone, CB-S is also more efficient when broadcast to a subset of the nodes is desirable.

• KSBB Journal
• /
• v.31 no.3
• /
• pp.171-177
• /
• 2016

The effects of medicinal mushroom (Sparassis crispa) powder supplementation on the rheological property of dough and the quality of bread were investigated. Naturally dried S. crispa powders (NDSCP) and freeze-dried ones (FDSCP) were prepared. Farinograph profiles of dough showed that mushroom powder addition at levels higher than 1% led to reduced dough stability suggested by decreased development time and increased weakness. The incorporation of S. crispa powders was significantly (p<0.05) lower compared to other mushrooms which might be attributed to its high content of beta-glucan. FDSCP was chosen over NDSCP because of its fragrant flavor which could be ascribed to the preservation of volatile polyphenol components. The quality of FDSCP bread was evaluated with respect to specific volume, texture, color, and organoleptic qualities. The specific volume of bread with S. crispa powder decreased compared to the control, while textural properties, such as hardness, chewiness, and gumminess, were enhanced. Sensory evaluation showed that 0.3% FDSCP incorporation presented the highest bread quality. With its daily consumption, S. crispa supplemented bread can provide consumers with multiple health benefits.

• Korean Journal of Agricultural Science
• /
• v.26 no.2
• /
• pp.116-129
• /
• 1999

The objectives of the study mainly concentrated on identifying the political implication on genetically modified crops considering production potentials and problems. It is found that the comprehensive evaluation of the genetically modified crops could not be concluded and compromised in a word on account of the polarization and parallelism of the positive and negative benefits of genetically modified crops just like as the rail way. The genetically modified crops will be contributed to solving the food shortage problems in the world, when the issues such as food safety, ecological disturbance and loss and degradation of biodiversity can be guaranteed in transparency. And when the trade morality of the multi-national enterprises be accepted by the genetically modified crops consumers, the potentiality of genetically modified crops will be realized greatly. By the way, the first problems will be expected to be solved by scientific development. If the food safety of the genetically modified technology be verified in transparency, it will be greatly contributed to solve food problems of human beings in the world. But the second problem could not be expected to be easily solved from the view point of capital property. In conclusion, the genetically modified technology will be made a severe sense of incongruity and a seed of fire on it will be remained persistently. According to the results based on the analysing the genetically modified crops potentiality and problems, it was identified that the ex-ante preparation of counter-measures and actions on it should be necessary. Accordingly this study has recommended that how and what the R&D policy on genetically modified crops be established and suggested how to carried out the industrial and economic policy together with international negotiation, and organizational and institutional rearrangement and etc.

• The Journal of the Korea Contents Association
• /
• v.21 no.2
• /
• pp.78-84
• /
• 2021

Issues have arisen over the monopoly of housing sales guarantees by the Housing and Urban Guarantee Corporation. If the Ministry of Land, Infrastructure and Transport appoints an additional guarantee institution, there is concern that the property protection between the two parties is insufficient due to excessive competition and the weakening of urban regeneration resources. It argues that housing supply policies for stabilization of the housing market can be smoothly implemented through monopoly projects. This is judged to be an abuse of market dominant position under the Fair Trade Act, and excessive restrictions on pre-sale guarantee requirements may cause delays in business and infringement of property rights of members. First, the establishment of a designation system for market dominant operators of the Fair Trade Commission enables new entry of private guarantee institutions. Second, it is necessary to improve regulations under Article 63 of the Fair Trade Act (consultation on the establishment of laws restricting competition, etc.). Third, through the establishment of the 「Rules on Housing Supply」 under Article 15 (2), the Minister of Land, Infrastructure and Transport can additionally designate a guarantee institution, thereby guaranteeing the right to select a pre-sale guarantee for the business entity. In addition, it is expected that at least one of a number of guarantee insurance companies can be designated to improve the efficiency of the distribution of social benefits, thereby lowering the volatility of housing prices. Listen and suggest.

• Journal of the Korean housing association
• /
• v.18 no.6
• /
• pp.45-55
• /
• 2007

The study is based on a two-year research study titled 'A study on the Development of the Programs for Housing Policy to support Multi-family Housing Remodeling in Korea'. The primary purpose of this two-year study was to recommend governmental program initiatives for supporting multi-family housing remodeling activities in Korea. As a part of this research study, this article was written based on the results from the two surveys regarding multi-family housing remodeling in the United States and Korea, and a focus group with housing researchers affiliated to the Joint Center for Housing Studies. Major research findings are presented as follows: First, there have been various types of supportive programs for single- and multi-family housing remodeling in the United States. Those have focused on lower income families than middle income families. Compared with the programs in the United States, the apartment remodeling in Korea has been focusing on small population of the multi-family housing owners. Apartment remodeling in Korea needs supportive programs for rental housing remodeling and the housing remodeling for low-incomes. Second, there have been various types of remodeling activities made in multi-family housing properties in the United States. Size of remodeling project also varied. Their remodeling activities were based on the long-term repairing plans initiated by professional apartment management groups. For making our multi-family housing properties more sustainable, we also need to have the long-term repairing plans. Third, the apartment property remodeling has been regarded as a substitute of reconstruction of apartment properties. However, remodeling should be regarded as one of the most efficient ways to extend the life-cycle of apartment buildings. Thus, benefits and executive plans of apartment remodeling should be studied by a professional research center under our governmental responsibilities as done in the United States.

• Journal of Korea Technology Innovation Society
• /
• v.11 no.2
• /
• pp.219-240
• /
• 2008

This paper aims to suggest a policy for biological resource based on a comprehensive understanding on biological resources. Biological resources are different from traditionally recognized viable organisms (Biodiversity) in ecosystems. Biological resources are culturable and replicable resources of living organisms such as tissues, cells and genes. Moreover, biological resources include human-derived biological materials. Biological resources is not simply a matter of science and technology. Biological resources should be dealt with as national resources. There are many international issues regarding biological resources, such as intellectual property rights (IPRs), safety on handling and distribution, material transfer agreements (MTAs) for mutual benefits and biological standards. Ethical debates are also being raised because biological resources are related with human-derived biological materials. Every nation has tendency to adopt its government policies to strengthen its sovereignty on biological resources and international cooperation. In addition, international linkages are essential for providing enhanced worldwide accessibility to biological resources. Japan has shown several international initiatives in the field of biological resources. Korea has just begun to design appropriate policies for the use and R&D of biological resources. Therefore, this paper suggests the following needs: 1) policy at the national level beyond the interests of researchers, 2) inter-ministerial coordination across government ministries, 3) expansion of scope and size of each BRC (Biological Resource Centers), and 4) building networks and systems such as national information center, representative centers by field, and each BRC.

• Journal of Advanced Navigation Technology
• /
• v.25 no.5
• /
• pp.327-335
• /
• 2021

Navigational Aids Facilities help aircraft navigate by using wired communication, wireless communication, satellite, light, color and radio waves. Navigational Aids Facilities are used in all processes of aircraft operation, and if there is a problem with the facility, it may lead to delays in flight operation, cancellation of flights, and major airline accidents, resulting in enormous loss of life and property. In the management and operation of Navigational Aids Facilities, various outcomes will be brought about according to the advancement with the safety culture. The purpose of this study is to investigate the effect of advancement on safety culture in the operation of Navigational Aids facilities not only on members and customers, but also on benefits to bring to whole society. In this paper, the analysis results are presented using the structural equation model, and the meaning is presented in the conclusion.