• YAKHAK HOEJI
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• v.57 no.2
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• pp.150-159
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• 2013

A study was performed to identify current drug shortages, assess impact of drug shortages on public hospitals and patients, and investigate needs of pharmacists for a drug shortage list. An e-mail survey was sent to the pharmacists of 13 national public hospitals. Total 61.5% of public hospitals has 10 or fewer drugs a year in short supply. Shortages involved mood drugs, anti-tumor drugs, analgesics, antibiotics and etc. in 2012. Among them 75.0% was prescription drugs and the other 25.0% was non-prescription drugs. 79.2% was domestic products and 20.8% was imported drugs. Only 12.5% was injections. Less than 3 pharmacists usually spent within 3 hours managing one drug shortage. Since a single item for a certain medicine may raise risk of drug shortages, it's needed to consider developing manuals, laying up medicine stocks and holding plural medicines for drug shortages in public hospitals. Main information resources of drug shortages are wholesalers or manufacturers. But the information appeared to be not only inadequate but also too late for appropriate activities. A survey of pharmacists revealed that overall 84.6% of respondents were in need of the drug shortage list. They expected it to be conducted to take proper measures for the drug shortage and to improve patient healthcare outcome and convenience. This study will contribute to improving public health by promoting stable supply of drugs and repairing the information delivery system.

• Proceedings of the KIEE Conference
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• 1996.07b
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• pp.793-796
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• 1996

This study proposes a new algorithm which performs a production simulation under various constraints and maintains computational efficiency. In order to consider the environmental and operational constraints, the proposed algorithm is based on optimization techniques formulated in LP form In the algorithm, "system characteristic constraints" reflect the system characteristics such as LDC shape, unit loading order and forced outage rate. By using the concept of Energy Invariance Property and two operational rules i.e. Compliance Rule for Emission Constraint, Compliance Rule for Limited Energy of Individual Unit, the number of system characteristic constraints is appreciably reduced. As a solution method of the optimization problem, the author uses Karmarkar's method which performs effectively in solving large scale LP problem. The efficiency of production simulation is meaningful when it is effectively used in power system planning. With the proposed production simulation algorithm, an optimal expansion planning model which can cope with operational constraints, environmental restriction, and various uncertainties is developed. This expansion planning model is applied to the long range planning schemes by WASP, and determines an optimal expansion scheme which considers the effect of supply interruption, load forecasting errors, multistates of unit operation, plural limited energy plants etc.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2004.05b
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• pp.291-294
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• 2004

In this paper, we consider the broadcast switch architecture for hish performance multicast packet switching. In input and output buffered switch, we propose a new switch architecture which supports high throughput in broadcast packet switching with switch planes of single input and multiple output crossbars. The proposed switch architecture has a central arbiter that arbitrates requests from plural input ports and generates multiple grant signals to multiple output ports in a packet transmission slot. It provides high speed pipelined arbitration and large scale switching capacity.

• Korean Institute of Interior Design Journal
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• v.14 no.4 s.51
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• pp.35-44
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• 2005

Light is the essential and symbolical entity In architecture. But the meaning of light has been changed as time has passed, and today it has plural meaning and more sophisticated role. Since 1960's 'Light and Space Art' has accomplished many successful experiments through light and space as artistic media, and they have changed the understanding of light from the electrical source to the phenomenological energy and sensual medium. And also the role of space in their works takes the more human-oriented field constituted from the coherent relationship of internal parts including human being. Light could be 'an object' and 'material' under 'Light and Space Art' artists' persistent efforts. They revealed another realm of spatial experiences such as extension-the metaphysical space, heterogeneous relationship-the complex space, and dematerialization-the illusionary space. The secondary and inclusive effects by 'Light and Space Art' can be found In the phenomenological architecture, the post-modern architecture, and the immaterial tendency of contemporary architecture. However, the more close connections between 'Light and Space Art' and the specific architectures are still left as a portion aside for the further research.

• Proceedings of the KIEE Conference
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• 2005.07b
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• pp.1534-1536
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• 2005

A DC-DC converter is being widely used for various household appliances and for industry applications. The DC-DC converter is powered from single battery, and the voltage is varied according to the purpose. In the vehicle, various accessories whose electric power is different are being used. Thus, plural number of DC-DC converter should be provided, so these situations bring complicated circuits, and accordingly, higher cost. Under such backgrounds, in this paper, we propose a novel buck-boost chopper circuit with simply configuration which can supply to two or more different output loads. The propose chewer circuit can control output voltages by controlling duty ratio by using typically two switching devices, which is composed by single boost-switch and single buck-switch. The output voltage can be controlled widely. A few modified circuits developed from the fundamental circuit are represented including the general multi-load circuit. And all this merits and appropriateness was proved by computer simulation and experience.

• Journal of the military operations research society of Korea
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• v.26 no.1
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• pp.89-99
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• 2000

This paper deals with a heuristic algorithm for the vehicle routing-scheduling problem to minimize the total travel distance and the total cost. Because the aim of the Clarke-Wright method, one of famous heuristic methods, is to minimize the total travel distance of vehicles, it cannot consider the cost if the cost and the travel distance is not proportional. In the Clarke-Wright method, the route of each vehicle is found by using the saving matrix which is made by an assumption that the vehicle comes back to the starting point. The problem dealt with in the paper, however, does not need the vehicle to come back because each vehicle has its hoping-start-points and hoping-destination-points. Therefore we need a different saving matrix appropriate to this occasion. We propose a method to find an initial solution by applying network simplex method after transforming the vehicle routing-scheduling problem into the minimum cost problem. Moreover, we propose a method to minimize the total travel distance by using the modified saving matrix which is appropriate to no-return occasion and the method for the case of plural types of vehicles and freights.

• Phonetics and Speech Sciences
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• v.13 no.1
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• pp.17-24
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• 2021

In this study, listening errors by Korean EFL learners are comprehensively analyzed from self-paced passage dictation tasks. Fifty-five Korean EFL learners participated in the study. Listeners were asked to write down dictation passages as accurately as possible, while listening to the audio as much as they needed. The results show that (i) low-proficiency learners tend to misperceive longer phrases than high-proficiency learners, (ii) function words are more often omitted or misheard than content words, and (iii) low-proficiency learners have more difficulties with content words than high-proficiency learners do. Most frequent suffix errors were omissions of past or plural suffixes. Among the function words, the most frequent errors were found with auxiliary contractions, infinitive marker to, and articles, mostly in the environment of linking and elision. It is also shown that C-V linking, C-C linking, and elision are the primary sources for the most frequent errors. C-V linking led to errors in correctly locating the word boundary, while C-C linking and elision resulted in omission. These errors show that Korean EFL listeners have difficulties in detecting fine-grained phonetic details to the extent that native speakers can do.

• Journal of English Language & Literature
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• v.64 no.3
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• pp.483-530
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• 2018

Unpacking and dispersing rights of various kinds formerly enjoyed by a selected few has been the constant motivation behind the democratization and modernization of human society. Human rights and later civil rights have continuously been constituted and reconstituted in response to the demands of the laboring class, slaves, women, subalterns, animals, and things, expanding beyond the boundaries of class, race, nation, sexuality, gender, species and organism. Calling attention to the ways in which literary and cultural texts have narrated rights so as to inscribe these human, nonhuman, and inhuman demands. Narrating rights offer opportunities to interrogate the lasting contributions of English language and literature to questioning, reforming, and practicing rights. The interrogation is particularly pertinent in this age in which revised and dispersed rights are creating new conflicts, requiring them to be narrated differently and imaginatively so as to allow all the parties in conflict to participate in working out the conflicts. With the 2017 theme of "Literature and Human Rights," JELL editorial collective hope to explore the relationship between literature and human rights in its multiple simultaneous, and plural manifestations in an open platform. "Narrating Rights" is a double-edged task that, on one hand, reflects the singular life conditions or contexts of a human, inhuman or nonhuman being and, on the other hand, aspires to the perpetual process of rights' universal application. Eleven out of all the keynote speakers at the 2017 ELLAK Convention were invited to this roundtable on Literature and Human Rights. The following transcription includes the dialogues of the eleven discussants.

• The Southeast Asian review
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• v.24 no.2
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• pp.81-126
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• 2014

Localization of overseas Korean companies has been regarded as one of vital tasks or strategies for decades. However, labor relations have not been the main object of Korean academic researchers. In this paper, I attempt to analyze strategies of localization in labor relations adopted by overseas Korean companies through a qualitative case study of PT. Miwon Indonesia, which has run business successfully for 40 years with recently achieved industrial peace. The company minimized Korean staffs and maximized Indonesian staffs. It pays more than minimum wage, and observes labor law when using outsourcing workers. The managers of the company recognize their labor union as management partner and support union activities through paying bonus for the union head and travel allowances for solidarity gatherings. There is no discrimination between plural unions. Furthermore, collective bargaining is led by indigenous managers according to the musyawarah, a local principle of bargaining. Therefore, PT. Miwon Indonesia could be regarded as a forerunner of localization in labor management among Korean companies in Indonesia. Miwon's case will serve a useful reference when discussing localization of labor management strategies.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.45 no.4
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• pp.187-198
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• 2022

This paper addresses the maintenance optimization problem in multi-component systems in which parts are connected in series, carrying out several missions interspersed with scheduled finite breaks. Due to limited time or resources, maintenance actions can be only carried out on a limited set of components. The decision maker then has to decide which components to maintain to ensure a pre-specified performance level during next mission. Most of the existing models in the literature usually assume only one system and enough spare parts. However, there are situations in which maintenance is required for multiple systems of the same type. To overcome this restrictive assumption, this study optimizes the maintenance problem considering the lack of repair parts and cannibalism for many identical systems. This study presents two optimization models with different objectives to solve the problem and analyzes the results so that the decision maker can decide. The results of this study are expected to be used for the maintenance of multiple systems of the same type, such as swarm drones.