• The KIPS Transactions:PartD
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• v.10D no.2
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• pp.247-260
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• 2003

To share and standardize information, especially in the database environments, MDR (Metadata Registry) can be used to integrate various heterogeneous databases within a particular domain. But due to the discrepancies of data element representation between organizations, global information integration is not so easy. And users who are searching integrated information on the Web have limitation to obtain schema information for the underlying source databases. To solve those problems, in this paper, we present a 3-layered Information Integration System (LI2S) based on MDRs and Ontology. The purpose of proposed architecture is to define information integration model, which combine both of the nature of MDRs standard specification and functionality of ontology for the concept and relation. Adopting agent technology to the proposed model plays a key role to support the hierarchical and independent information integration architecture. Ontology is used as for a role of semantic network from which it extracts concept from the user query and the establishment of relationship between MDRs for the data element. (MDR and Knowledge Base are used as for the solution of discrepancies of data element representation between MDRs. Based on this architectural concept, LI2S was designed and implemented.

• Korean Journal of Soil Science and Fertilizer
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• v.10 no.3
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• pp.153-170
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• 1977

Considering the ways for the possible improvement of soil test for upland crops, various methods for the evaluation of K supplying power and testing of available soil K were reviewed in terms of theoretical principles and practical usefulness of the each method. The review was also made on the characteristics of upland crops in K requirement and on the chemical properties of major korean upland and lowland rice soils in terms of K availability. Following is the few remarks drawn from the review. 1. Quite large number of methods have been known for the evaluation of K supplying power and testing for available soil K. In nature, they can be divided into two categories; capacity-based methods and intensity-based methcds. The capacity-based methods usually measure the exchangeable and some portion of nonexchangeable K, while the intensity-based methods suggest to consider the ractivity ratios of major cations in soil solution and the energy requirement for the replacement of exchangeable soil K into soil solution. 2. As methodology for extraction of interested part of soil K, chemical extraction, electrodialysis and ion exchange methods have been known. Among these, chemical extract ion is favorable because of its simplicity. However, recently suggested Electro-Ultra-Filtration method seems to merit further study for wider use for not only K but also other nutrient availability of soils. 3. The intensity-based methods, although they are more theoretical, because of their complexity, in methods may not be adapted for practical soil tests. 4. The exchangeable K which is rather simple to measure and which well reflects the status of K reserve as nonexchangeable and is immediate pool of water soluble K may be good, if not best, criterion of soil K availability to plant in common soil testing. 5. Because there are evidences that the abundance of available K alone may not be good inclication for availability of K to plant, it is recommendable to interprete the exchangeable K data as percent saturation of exchangeable K to total C. E. C. of soil for the recommend ation of K fertilizer based on soil tests. 6. Some pot and field trial results showed the trends that percent potassium saturation to total C. E. C. better serve as the parameter for K fertilizer recommendation.

• 제어로봇시스템학회:학술대회논문집
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• 2004.08a
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• pp.620-626
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• 2004

For general nonlinear processes, it is difficult to control with a linear model-based control method and nonlinear controls are considered. Among the numerous approaches suggested, the most rigorous approach is to use dynamic optimization. Many general engineering problems like control, scheduling, planning etc. are expressed by functional optimization problem and most of them can be changed into dynamic programming (DP) problems. However the DP problems are used in just few cases because as the size of the problem grows, the dynamic programming approach is suffered from the burden of calculation which is called as 'curse of dimensionality'. In order to avoid this problem, the Neuro-Dynamic Programming (NDP) approach is proposed by Bertsekas and Tsitsiklis (1996). To get the solution of seriously nonlinear process control, the interest in NDP approach is enlarged and NDP algorithm is applied to diverse areas such as retailing, finance, inventory management, communication networks, etc. and it has been extended to chemical engineering parts. In the NDP approach, we select the optimal control input policy to minimize the value of cost which is calculated by the sum of current stage cost and future stages cost starting from the next state. The cost value is related with a weight square sum of error and input movement. During the calculation of optimal input policy, if the approximate cost function by using simulation data is utilized with Bellman iteration, the burden of calculation can be relieved and the curse of dimensionality problem of DP can be overcome. It is very important issue how to construct the cost-to-go function which has a good approximate performance. The neural network is one of the eager learning methods and it works as a global approximator to cost-to-go function. In this algorithm, the training of neural network is important and difficult part, and it gives significant effect on the performance of control. To avoid the difficulty in neural network training, the lazy learning method like k-nearest neighbor method can be exploited. The training is unnecessary for this method but requires more computation time and greater data storage. The pH neutralization process has long been taken as a representative benchmark problem of nonlin ar chemical process control due to its nonlinearity and time-varying nature. In this study, the NDP algorithm was applied to pH neutralization process. At first, the pH neutralization process control to use NDP algorithm was performed through simulations with various approximators. The global and local approximators are used for NDP calculation. After that, the verification of NDP in real system was made by pH neutralization experiment. The control results by NDP algorithm was compared with those by the PI controller which is traditionally used, in both simulations and experiments. From the comparison of results, the control by NDP algorithm showed faster and better control performance than PI controller. In addition to that, the control by NDP algorithm showed the good results when it applied to the cases with disturbances and multiple set point changes.

• Child Health Nursing Research
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• v.7 no.4
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• pp.434-450
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• 2001

This study is designed to understand the meaning and nature of raising children with cerebral palsy. It researches the experience of mothers of schoolchildren with cerebral palsy by the research method of hermeneutic phenomenology. The study was conducted from November 10, 1999 to December 20, 2000. When children with cerebral palsy usually show symptoms in the early stage of cerebral palsy, mothers do not take children to a doctor for diagnosis. And, most of mothers have a difficult time to accept the reality; they usually respond to the initial diagnosis with shock, reproach, and deny. When mothers start recognizing the reality, they consider that their children have cerebral palsy due to the their mismanagement during pregnancy, delivery, nursing, and initial treatment. They shelter their children from view and feel guilty that they cannot afford to try folk remedies for their children. As time passes, mothers face conflicts between families in diverse ways. Families put the blame on genetic effects. Mothers-in-law give their daughters-in-law a hard time, husbands shift the responsibility of raising children onto their wives, and trouble arises between families-in-law and mothers native families. When children grow up, it is physically difficult for mothers to take care their children. In addition, they suffer from all the troubles in family due to childrens handicap. Mothers try the diverse methods of bringing up children. However, they start getting tired of raising children as they experience failures and financial difficulties. Mothers feel collapsed recalling the ways of raising children. They feel anxiety, miserable, lonely, and worrying when they think how children would attend school, make friends, and live in the future. In this stage, mothers do their best to raise their children with hope. They tend to compare their children with others without handicap and spend money and time in attempting all the treatments. When mothers and children join the society at school, they find that the society does not understand disabled people, teachers show inconsiderate attitude, friends avoid them, and children hardly follow classes. Such experiences make mothers feel angry and frustrated. However, when children adapt to school, mothers see the possibility that children could accomplish schoolwork. They appreciate teachers help and others consideration. Mothers place appropriate expectations on their children and help them to prepare for the future. I would make following suggestions based on the results. 1. As a primary basic course of rehabilitation nursing intervention, solution-centered nursing intervention system should be developed. The intervention needs to be based on the understanding of mothers, who raise children with cerebral palsy, through in-depth interview. 2. Advance researches on the development of individual nursing intervention should be conducted. Individual nursing intervention needs to prevent and release actual pain focusing on mothers raising children with cerebral palsy. 3. Integrated curriculum that help children with cerebral palsy lead a normal school life with ordinary children should be developed. 4. Basic research on using of facilities and effective application of service volunteer to help children with cerebral palsy in school needs to be conducted.

• Journal of Society of Preventive Korean Medicine
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• v.8 no.2
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• pp.99-113
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• 2004

Problems and current situation of public health globally and domestically were analyzed in this study and based on these findings, ways to improve from western medicine and Oriental medicine can be deduced as follows: 1. Current problems of public health in Korea and the world 1) Increase of diseases resulted from daily habits and infectious diseases, many are at the brink of being ill. Quality of life from extended life span and unbalanced health care must be solved. 2) Natural and societal factors including host factors, public health service, and other external and internal factors play an important role in deciding healthy and being ill. 3) Some of the limits and problems of modem medicine include insufficient academic knowledge and incomplete theory, as well as misled approach to the treatment. Human itself isn't perfect organism and other realistic problems hinder one's well-being. 4) Regardless of western medicine or Oriental medicine, patients were approached as someone with diseases and disorders, and wholistic approach was disregarded. Lack of clinical training, absence of clear educational philosophy and goal are some of the reasons why the education isn't under concrete system 2. Important factors for the medical education and proper direction for the education of Oriental medicine 1) Important factors for medical education - Education should not be limited on the human health and illness, but also cover qualities such as well-being, social welfare, service, and happiness. Every aspects of human life must be considered and attended for more productive outcome. - Basic understanding of humanity must be included in the educational curriculum - Foundation of human diseases and pain are associated with inner life and surrounding causes including family, society, nature, race, culture, religion, politics, and etc., thus the education must be approached to recognize aforementioned criteria. 2) Proper direction for the education of Oriental medicine - Values of Oriental medicine for medical principles and importance of lifehood must be educated. - Educational goal, limits, and levels must be established for the school of Oriental medicine - Respect for life must be the top priorities of educational direction which should lead to solution based education for the human health. Latest medical theory and technology should be accommodated as well as prevention, treatment, and balancing of basic courses and clinical training for optimal education.

• Journal of Wetlands Research
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• v.23 no.3
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• pp.242-251
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• 2021

Surface water pollution is a serious environmental problem in developing countries, like India, due to the unregulated discharge of untreated wastewater. To overcome this, the constructed wetlands (CWs) have been proven to be an efficient technology for wastewater treatment. In this study, different existing and experimental facilities were reviewed to be able to determine the current status of constructed wetlands in India. Based on the collected data from published literature, industrial wastewater contained the highest average chemical oxygen demand (COD), biochemical oxygen demand (BOD). In terms of total nitrogen (TN), Total phosphorous (TP), the lowest concentration was found on domestic wastewater. Vertical flow constructed wetlands (VFCW) and Horizontal flow constructed wetland (HFCW) were more effective in removing TSS, BOD, TP in domestic and industrial wastewater, whereas hybrid constructed wetlands (HCW) showed the highest removal for COD. The use of constructed wetlands as advanced wastewater treatment facilities in India yielded better water quality. The treatment of wastewater using constructed wetlands also enabled further reuse of wastewater for irrigation and other agricultural purposes. Overall, this study can be beneficial in evaluating and promoting the use of constructed wetlands in India.

• Maritime Security
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• v.3 no.1
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• pp.141-185
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• 2021

The growing U.S.-China rivalry has placed the countries of Southeast Asia in exceedingly precarious positions. The Republic of Korea (ROK) likewise has been tasked with the challenge of "navigating the waters" between deepening geopolitical divides. It is in this context that the "New Southern Policy" (hereafter NSP) has become a key word in Korea's foreign policy circles. Through NSP, ROK aims to diversify its economic and security interests by strengthening ties with its southern partners, focusing on three key areas (termed as the "3 Ps"): People, Prosperity, and Peace. At the same time, the NSP seeks cooperation with other key diplomatic agendas such as the U.S.'s "Free and Open Indo-Pacific," rendering it crucial for the overall stability of the region. Considering such strategic significance, deeper analysis of the policy is more timely than ever. A brief assessment of the policy's outcome so far, however, reveals that relatively, the "Peace" pillar has been insufficient in achieving satisfactory outcomes. Here, this paper asks the question of: 1) How can the "Peace" pillar of South Korea's New Southern Policy be strengthened? Based on an analysis on the causes of the "Peace" pillar's weakness, this paper identifies counter-piracy cooperation as a solution. This paper then proceeds to answer the next question of: 2) How can ROK and ASEAN cooperate on counter-piracy, and how can these efforts be integrated into ROK's NSP? To answer the above question, this paper conducts in-depth case studies on ASEAN's and ROK's approaches to counter-piracy and identifies specific mechanisms of cooperation. In Chapter I, the paper begins with an overview of the NSP's strategic significance and an evaluation of its "Peace" pillar. Chapter II conducts a literature review on the causes of, and prescriptions for, the weakness of the "Peace" pillar. The paper then justifies why counter-piracy may be a solution. Chapter III examines ASEAN's and ROK's approaches to counter-piracy. By analyzing the general framework and each region's cases, the paper displays the strengths and weaknesses of each region's piracy responses. Based on this analysis, Chapter IV suggests ways to incorporate counter-piracy cooperation into the "Peace" pillar of the NSP. This research bears significance in that it identifies a specific area of cooperation (counter-piracy) to strengthen the "Peace" pillar of ROK's NSP. Such identification is based on a comprehensive study into the two parties' past and current experience in counter-piracy, making it contextual in nature. Furthermore, the study suggests practical mechanisms of cooperation, and considers ways of incorporation into the existing framework of NSP. This approach differs from existing literature that failed to generate case-specific, policy-oriented solutions. The COVID-19 pandemic has exacerbated piracy issues and deepened geopolitical divides. Turbulent seas such as these call for careful navigation. When it comes to promoting "peace," the key lies in combating the pirates that sail those very waters.

• Journal of Wetlands Research
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• v.21 no.4
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• pp.384-391
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• 2019

Nutrients in stormwater runoff have raised concerns regarding water quality degradation in the recent years. Low impact development (LID) technologies are types of nature-based solutions developed to address water quality problems and restore the predevelopment hydrology of a catchment area. Two LID facilities, infiltration trench (IT) and infiltration planter (IP), are known for their high removal rate of nutrients through sedimentation and vegetation. Long-term monitoring was conducted to assess the performance and cite the advantages and disadvantages of utilizing the facilities in nutrient removal. Since a strong ionic bond exists between phosphorus compounds and sediments, reduction of total phosphorus (TP) (more than 76%), in both facilities was associated to the removal of total suspended solids (TSS) (more than 84%). The efficiency of nitrogen in IP is 28% higher than IT. Effective nitrification occurred in IT and particulate forms of nitrogen were removed through sedimentation and media filters. Decrease in ammonium- nitrogen (NH₄-N) and nitrite-nitrogen (NO₂-N), and increase in nitrate-nitrogen (NO₃-N) fraction forms indicated that effective nitrification and denitrification occurred in IP. Hydrologic factors such as rainfall depth and rainfall intensity affected nutrient treatment capabilities of urban stormwater LID facilities The greatest monitored rainfall intensity of 11 mm/hr for IT yielded to 34% and 55% removal efficiencies for TN and TP, respectively, whereas, low rainfall intensities below 5 mm resulted to 100 % removal efficiency. The greatest monitored rainfall intensity for IP was 27 mm/hr, which still resulted to high removal efficiencies of 98% and 97% for TN and TP, respectively. Water quality assessment showed that both facilities were effective in reducing the amount of nutrients; however, IP was found to be more efficient than IT due to its additional provisions for plant uptake and larger storage volume.

• The Journal of Art Theory & Practice
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• no.14
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• pp.53-83
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• 2012

This thesis is a study of artistic measures and climate refugees, based on Hack's World Climate Refugee Camp project. According to Hack, climate refugees appeared with the process of globalization. Hack claimed that the people who put climate refugees in danger are the industrialized nations, and therefore, their rejection of refugees is nonsense. He also stated that the fundamental solution would be the active participation of such nations. Thus, he travels around the world, encouraging participants and globalizing his project. Interestingly, the practical participation method of his climate calamity project is divided into four methods, which are all related to realizing the danger and presenting various solutions. First, the aesthetic of survival: the reason Hack focused on the warming trend and claimed that we have to accept the climate refugees as refugees comes from the thought that we are all potential refugees, and the anxiety that climate refugees may cause war in the end. The solution Hack found for surviving in such a world is to create "refugee camps" to notify people about the seriousness of climate change, and to put the "aesthetic for survival" in action. Second, a relation-oriented relationship: communication between Hack and the participants was done in various ways. They are experiencing a bond and emotions of an interrelationship through their actions in the experimental field, experiencing a new form of art, which they were not able to experience in a museum. Third, a utopian measure: Hack's utopian measure started from the fear of dystopia but Hack still believes that it is not only a dream, but that it can be realized. He claims that even though the start may be feeble, it is possible to rescue children from starvation and to treat climate refugees as proper human in the end, when communication and cooperation is done the right way and properly. Fourth, the aesthetic of global relation, the internet: the new solution Hack is trying on the internet is to make more people participate in his project. It is fate that "human are the wrongdoer and the victim at the same time", but according to Hack's opinion, social disaster can be avoided through effort and it is optimistic that we can give form to the culture revolution we are experiencing now. Hack's project illustrated the importance of daily life, compared to art inside a museum, through active participation of the people and opened up a new method of art through realistic responses to disasters. This is distinctive from the past exhibitions, where artists gave shape and form to ideals and an imaginary world, in that it shows that the artist and audience aim for creating a community-like structure, just like Bourriaud's art method. Hack's project of climate calamity illustrates that installation and action art is not only an art genre which shows installation and activities, but that it can include social and political issues and that it can be completed with the help of participants, consequently becoming a genre of modern art. Hack raises a question about art's identity through various descriptions. Artists as planners, who base their artworks on their subjectivity or the characteristics of a specific period, the people as participants, the duet of art work and play, human and human, and further, human and nature. The practical participation method, as a measure for "disaster", reveals the new art of the 21st century within Hack's artworks. Even though there are several problems with Hack's usage of art as a measure for disaster, it will actively open up a new page for the 21st century's art with the theme of disaster.

• Journal of Service Research and Studies
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• v.7 no.1
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• pp.83-96
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• 2017

The importance of service science is emphasized in the modern economy, and the value and necessity of service research still increasing. Since the service research framework was proposed, it has been studied from various perspectives and incorporated into one framework--service research. The direction of service research has been established and a new baseline of research has been established. However, the modern economic and social environment could be described as a new era, the Fourth Industrial Revolution has changed drastically. More and more systematic research on services has become necessary. Therefore, this study analyzed the field of service research in the existing framework. The study suggested how service research could broaden the horizon of service research by studying the 'what'. To do this, we analyzed recent service research trends by themes. We also identified the shortcomings of previous studies about service, and suggested directions and research themes for future research. Based on this study we developed a general approach to the creation of new models from the viewpoint of service science. The authors were also able to develop a general approach to areas such as service innovation, service inference, service solution, and service design leverage. In addition, it is necessary to extend service research and business model to the utilization of service technology. This approach could contribute to forming the basis of future service development, and to utilize social media to create new value of innovative company. The results of this study could contribute to deepening and expanding service research.