• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.24 no.1
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• pp.115-123
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• 2024

The purpose of this study is to contribute to how the advantages of artificial intelligence (AI) services and the associated limitations can be simultaneously overcome, using the keywords AI and risk management. To achieve this, two cases were introduced: (1) presenting a risk monitoring process utilizing AI and (2) introducing an operational toolkit to minimize the emerging limitations in the development and operation of AI services. Through case analysis, the following implications are proposed. First, as AI services deeply influence our lives, the process are needed to minimize the emerging limitations. Second, for effective risk management monitoring using AI, priority should be given to obtaining suitable and reliable data. Third, to overcome the limitations arising in the development and operation of AI services, the application of a risk management process at each stage of the workflow, requiring continuous monitoring, is essential. This study is a research effort on approaches to minimize limitations provided by advancing artificial intelligence (AI). It can contribute to research on risk management in the future growth and development of the related market, examining ways to mitigate limitations posed by evolving AI technologies.

• Journal of the Korean Home Economics Association
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• v.17 no.4
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• pp.117-127
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• 1979

This study attempts to shed additional light on the national diffusion process and interaction of welfare services for children and mothers. The central hypothesis examined is the following : In general, the implant of social welfare system is first considered on the characteristics of their own socio-economics , and diffusion prodess of welfare services tends to occur faster in countries with open sicieties than in countries where entry barriers are high and society ranking rigid. The scope of the study is limited in several ways. Attention is concentrated on the agency of woman in the belief that an in-depth case study of one field can yield more insight than a less detailed investigation embracing a number of social welfare systems. The angency of woman is selected for several reasons. a) It is important the agency of woman alone produce more effective than services affecting both the child welfare and women's libertion bradually. Moreover, these services will form the heart of mother's welfare. b) The services of women's agency is gradually wide spread, since a role of government is still negligible before a full realization of economic income. c) The services of women agency is a prime example of a social welfare. d) statistical data and other information are more readily available. One of major findings of our study is the existence of the barriers inhibiting child welfare form " motherhood cult". Despite all the distinct advantages for mother and child , social attitudes appear to be some resistant on child welfare system among men and women even the agenices of women. What is surprised is the extent of the awareness that strategies of women's agency to liberate woman and to increate activities of women involve the strategies to liberate child. The conviction that solving application problems for child welfare in line with the activities of agency by women offer greater freedom and more advantage to mother are not apparent on the data collected from 18 of multi-functional agencies in our country. there are little sign that such agencies cooperate toward attainment of common goals. The intensive early focus of the movement on consciousness raising is a necessary beginning and such efforts by women's organizations would help both in the continuous evolution of women and child. Some of the agencies offer a variety of services to women and children, others are specialized in that they offer fewer services or even only one. Social welfare agenices giving service to children and their families are identified by various names usually women service and child welfare from govern , mental agency and voluntary public agency to foreign aided. What is totally missing , however, is an integrated synthesis of child welfare program Through women's agency. Social changes to occur, but delineation of appropriate and comprehensive social policy is also necessary at this point at this point since efforts, social changes and polices must be well coordianted and focused, as well as mutually supprotive and reinforcing.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2023.04a
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• pp.36-36
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• 2023

천마(天麻, Gastrodia elata Blume)는 난초과(蘭草科, Orchidaceae)에 속하는 식물로 잎과 뿌리가 없어 탄소동화능력이 없으며, 뽕나무버섯균과 공생하는 기생식물이다. 천마는 노지 재배에 따른 안정생산 문제가 지속적으로 발생하고 있다. 혹한, 폭우 등 기상환경에 따른 연차간 수량성 차가 673~1,175kg/10a로 크고, 연작에 따른 수량성이 연작 1회 시 29%, 연작 2회 시 68%가 감소하는 경향을 보이고 있다. 따라서, 본 연구는 천마의 연작에 따른 토양내 미생물상의 변화를 분석하기 위해 수행하였다. 본 실험은 초작지, 연작 1회지, 연작 2회지 및 자생지의 각각 3곳에 대한 토양을 Metagenome 분석법을 활용하여 미생물상을 분석하였다. metagenome 분석 결과, 초작지 3곳의 시료를 이용하여 확보한 총 read는 699,221개였으며, 이 중에서 Eukaryota로 분류되지 않은 read는 1,377개(0.2%), no hit, not assign된 read는 10,510개 (1.5%), Bacteria로 분류된 read는 342,916개(49.0%), Eukaryota로 분류된 read는 총 344,418개(49.3%)였다. 그리고 천마의 생육에 영향을 주는 Fusarium 속과 종은 3곳 포장에서 고르게 분포하고 있으며, 총 11,242 read로 전체의 3.3%를 차지하였다. 연작 1회지 3곳의 시료를 이용하여 확보한 총 read는 655,097개였으며, 이 중에서 Eukaryota로 분류되지 않은 read는 1,694개(0.3%), no hit, not assign된 read는 18,985개(2.9%), Bacteria로 분류된 read는 312,201개(47.7%), Eukaryota로 분류된 read는 총 322,217개 (49.2%)였다. 그리고 천마의 생육에 영향을 주는 Fusarium 속과 종은 3곳 포장에서 고르게 분포하고 있으며, 총 11,597 read로 전체의 3.6%를 차지하였다. 연작 2회지 3곳의 시료를 이용하여 확보한 총 read는 651,624개였으며, 이 중에서 Eukaryota로 분류되지 않은 read는 1,753개(0.3%), no hit, not assign된 read는 7,995개(1.2%), Bacteria로 분류된 read는 307,178개(47.1%), Eukaryota로 분류된 read는 총 334,698개(51.4%)였다. 그리고 천마의 생육에 영향을 주는 Fusarium 속과 종은 총 43,877 read로 전체의 13.1%를 차지하였다. 자생지 3곳의 시료를 이용하여 확보한 총 read는 731,719개였으며, 이 중에서 Eukaryota로 분류되지 않은 read는 2,828개(0.4%), no hit, not assign된 read는 585개(0.1%), Bacteria로 분류된 read는 356,690개(48.7%), Eukaryota로 분류된 read는 총 371,616개(50.8%)였다. 그리고 천마의 생육에 영향을 주는 Fusarium 속과 종은 MJH01 자생지에서만 전체의 0.2%(총 660 read)로 극히 일부가 분리되었다. 따라서, 천마의 생육에 영향을 미치는 Fusarium 속과 종은 초작지 3.3%, 연작 1회지 3.6%, 연작 2회지 13.1%, 자생지 0.2%로 나타났으며, 연작 2회 시 급격히 증가하는 것으로 판단되었다.

• Culinary science and hospitality research
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• v.22 no.6
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• pp.120-131
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• 2016

The purpose of this study was to examine the structural relationship between customers' perception of authenticity, justice, customer commitment, and customer behavior in franchise coffee shops. To test the hypotheses of the study, a total of 428 customers in Korea were considered in an empirical analysis using a two-step structural equation model (SEM) approach. In particular, employees' authenticity had relatively great influence on customers' continuous and affective commitment and their justice had greater influence on customers' normative commitment. Also, customers' continuous commitment, normative commitment, and affective commitment significantly influence customer participation behavior, while normative commitment and affective commitment have a significant effect customer citizenship behavior. Research thus far divided justice and authenticity into separate concepts and examined relation with customer commitment or behaviors but the present study put cognitive process of justice and emotional process of authenticity on the same line and evaluated their different influence on customer commitment and behaviors, thereby verifying that not justice perceived by customers induced desirable customer behaviors but authenticity they felt with their heart played a more superior role in customer commitment or behaviors. This means that authentic services rather than justice induce customers' positive behaviors.

• Journal of the Korean Professional Engineers Association
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• v.32 no.5
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• pp.118-125
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• 1999

Air pollutant emissions from airplane engines are estimated about 2 to 4 % of mobile source of USA and European countries which is not a large portion of current air pollution. But the passengers and airfreights are continuously increasing 5 to 7% annually and potential demands of air transportation services come to present, it could effect air pollutant emissions of USA will increase within 15 years. In case of our country, there has been continuous increase of air transportation service due to considerable economic growth in recent years and increase of air pollutant emissions of major international airports has followed. Rapid increase of air transportation due to launching of Inchon International Airport could effect air pollution dominantly. By this circumstance environmental specialist as well as mass communication raised necessity of air pollutant emission regulation from airplane engines. It is estimated that air pollutant emissions from airplane engines in our country is 2.7% of automobile sources, 10,809 ton, which is the same level as USA and European countries. It is increased by 12,2% compared to air pollutant emissions during 1996 and it will be increased more than a half of current air pollutant emission within 15 years due to our country's economic condition. Therefore implementation of airplane engine emissions regulation as well as test standards and accumulation of technology about characteristics of airplane engine emission and reduction method are needed. And continuous estimation of air pollutant emission from airplane engines and monitoring of increment as well as development of countermeasures by long term are necessary.

• Journal of Internet Computing and Services
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• v.6 no.4
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• pp.85-92
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• 2005

In this paper, I propose a new extraction method Pitch Pulse and TSIUVC in continuous speech, The TSIUVC searching and extraction method is based on a zero-crossing rate and individual Pitch Pulse extraction method using FIR-STREAK filter. As a result, the extraction rate of individual pitch pulses was $96{\%}$ for male voice and $85{\%}$ for female voice respectively. The TSIUVC extraction rates are $94.9{\%}$ under $88{\%}$ for male voice and $94.9{\%}$ under $84.8{\%}$ for female voice. This method has the capability of being applied to a new speech coding of Voiced/Silence/TSIUVC, speech analysis and speech synthesis.

• The Journal of the Korea Contents Association
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• v.11 no.12
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• pp.543-551
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• 2011

Recently various handheld multimedia devices are spreading, and users want to share media contents across their own multiple devices. Conventional synchronization techniques for N-screen services can continuously play contents by switching from an initial device to a new device. In this case, even if a new device plays continuously contents, the initial device stops playing them. In this paper, we propose a synchronization technique in which multiple devices can share and continuously play same contents simultaneously by gathering and passing URI and current play-time of the contents. The proposed synchronization technique is built on UPnP and DLNA, and tested by implementing a wireless home media network system.

• Knowledge Management Research
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• v.17 no.1
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• pp.17-47
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• 2016

People use social network services (SNSs) for various purposes, for example, to share information, to express themselves, and to strengthen social relationships with others. Meanwhile, problems of personal information leakage and privacy infringement become a social issue and thus information privacy concerns about inappropriate collection and use of personal information increase in SNSs (e.g., Facebook). Although people have privacy concerns in SNSs, they behave in a contradictory way, voluntarily presenting themselves and disclosing personal information. This phenomenon is called 'privacy paradox'. Using dual factor theory, this study investigates the phenomenon of privacy paradox by looking into enablers (e.g., self-presentation) and inhibitors (e.g., information privacy concern) for continuous use of Facebook that can co-exist independently of each other. It also includes antecedents of self-presentation (i.e., narcissism, need for affiliation, involvement, and self-efficacy) and those of information privacy concern (i.e., previous experience of privacy infringement, privacy awareness, and privacy control). The results show that most hypothesized relationships were supported. These findings provide strategic implications for SNS providers who want to promote continuous use of SNS. Under the current circumstances in which enhanced privacy policies are required, this study would be a useful reference for future research on information privacy issues in SNSs.

• Journal of the Korea Society of Computer and Information
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• v.23 no.11
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• pp.129-135
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• 2018

In this study, we designed a model that can measure the level of user's concentration by measuring and analyzing EEG data of the subjects who are performing Continuous Performance Test based on visual stimulus. This study focused on alpha and beta waves, which are closely related to concentration in various brain waves. There are a lot of research and services to enhance not only concentration but also brain activity. However, there are formidable barriers to ordinary people for using routinely because of high cost and complex procedures. Therefore, this study designed the model using the portable EEG measurement device with reasonable cost and Visual Continuous Performance Test which we developed as a simplified version of the existing CPT. This study aims to measure the concentration level of the subject objectively through simple and affordable way, EEG analysis. Concentration is also closely related to various brain diseases such as dementia, depression, and ADHD. Therefore, we believe that our proposed model can be useful not only for improving concentration but also brain disease prediction and monitoring research. In addition, the combination of this model and the Brain Computer Interface technology can create greater synergy in various fields.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.456-457
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• 2021

Recently, in order to more accurately provide indoor location-based services, technologies using Wi-Fi fingerprints and deep learning are being studied. Among the deep learning models, an RNN model that can store information from the past can store continuous movements in indoor positioning, thereby reducing positioning errors. When using an RNN model for indoor positioning, the collected training data must be continuous sequential data. However, the Wi-Fi fingerprint data collected to determine specific location information cannot be used as training data for an RNN model because only RSSI for a specific location is recorded. This paper proposes a region clustering technique for sequential input data generation of RNN models based on Wi-Fi fingerprint data.