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A Study on Curriculum Development in the Dental Technology Department of a Vocational Junior College (전문대학 치기공과 교육과정 개발에 관한 연구)

  • Kim, Joo-Tae
    • Journal of Technologic Dentistry
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    • v.6 no.1
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    • pp.31-86
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    • 1984
  • The educational purpose of a junior college is believed to be to effectively train and produce professional workers equipped with the knowledge and skills required in various technical fields of modern society. Since dental technology takes its share of an important role through the enhancement of people's health and the construction of a whlfare society, the prosthodontia department is imposed with a great responsibility to train highly skilled, responsible dental technicians who will meet the social demands. To attain this goal, those who are in charge of the training and education should place emphasis on the development of better educational programs. In other words, the present curriculum which is lacking in many comprehensive aspects, is not satisfactory to provide the students with the required know-how and qualities. As is known, a currculum is the detailed guidance to the efficient operation of an educational program, and that of dental technology is not an exception. In addition, dental technology requires very detailed programs in training, because it requires both diversified and comprehensive application of serveral different fields. The following are the main points to be taken into consideration in developing an effective curriculum for this department. 1. The curriculum should be gradually expanded so that the fundamental subjects will contain principal theories which can be directly applied to the specified majoring subjects. 2. An effective arrangement of time tables should be provided so that basic practice and experiments can be conducted in direct connection with the leatures on the basic theories. 3. For a creative and up-to-date curriculum to help cope with the problems in achieving the aims of technological development and scientific education, intensive and extensive studies should be done on the curricula developed in the advanced countries. 4. The specific majoring subjects should be rearranged to contain new theories which are beneficial to dental technology. As an institution which is spearheaded for ondustrial-educational cooperation, the Junior collegeis role demands that the department should make every possible effect to cultivate highly-skilled technicisns. The following suggestions are made to help work out an ideal curriculum. 1. The basic theory subjects should be selected with consideration toward closely related majoring subjects. 2. The curriculum should be efficiently operated to effectively relate theories with experiments. 3. Subject importance must be rearranged ; It has been found that the ideal proportion of cultural, elective and required subjects is 20%, 20% and 60% respectively. 4. The credit allotments should be reconsidered: The total credits required for completion should preferably be 80; 16 for the cultural and the elective subjects respectively and 48 for the required subject. 5. A Commissioned education system should be formalized for strengthening industrial educational cooperation. 6. Experiments and practice should be intensified with the support of improved laboratory facilities. 7. The training period should be expanded form the present two years to three of four years, in order to produce more highly qualified technicians.

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A Systematic Approach to Port related Problems An Analysis on the Actual Condition of physical Distribution System of Pusan port (항만관련문제의 시스템적 고찰 부산항 물류시스템의 실태분석)

  • Lee Cheol-Yeong;Moon Seong-Hyeok
    • Journal of Korean Port Research
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    • v.2 no.1
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    • pp.7-28
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    • 1988
  • From the viewpoint of physical distribution, the port transport process can be regarded as a system which consists of various subsystems such as navigational aids, quay handling, transfer, storage, information If management, and co-ordination with inland transport. The handling productivity of this system is determined by the production level of the least productive subsystem. So, a productivity analysis on the flow of cargoes through each subsystem should be made in order to achieve efficient port operation. The purpose of this paper is to analyze the productivity of each subsystem in Pusan port, and to bring forward problems and finally to draw up plans for their betterment. Analyzed results on the productivity of each subsystem are as follows, i) It is known that the number of tugs with low HP should be increased by a few, the number of tugs with medium HP is appropriate, and the number of tugs with high HP is in excess of that necessary. ii ) In the case of container cargoes, it is found that the transfer and storage systems in BCTOC have the lowest handling capability, with a rate of $115\%$, leading to bottle-necks in the port transport system, while the handling rate of the storage and quay handling systems in general piers is in excess of the inherent capability. iii) In the case of the principal seaborne cargoes passing through general piers, there is found to be a remarkable bottle-neck in the storage system. In the light of these findings, both the extension of storage capability and the extension of handling productivity are urgently required to meet the needs of port users. Therefore, iv) As a short-term plan, it is proposed that many measures such as the reduction of free time, the efficient application of ODCY, etc must be brought in and v) In the long-trun, even though the handling capability will accommodate an additional 960,000 TEU in 1991, the scheduled completion date of the third development plan of Pusan port, insufficiency of handling facilities in the container terminal is still expected and concrete countermeasures will ultimately have to be taken for the port's harmonious operation. In particular, the problem of co-ordination with inland transport and urban traffic should be seriously examined together in the establishment of the Pusan port development. As a method of solving this, vi) It is suggested that Pusan port (North port) should be converted into an exclusive container ternimal and overall distribution systems to the other ports for treating general cargoes must be established. vii) And finally, it is also proposed that the arrival time (cut-off time) of influx cargoes for exports such as general merchandise and steel product should be limited, with a view to securing cargoes suitable for the operational capability of BCTOC.

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Lamellar-bio nano-hybrid; The Study for Stability of Catechin (Green Tea: EGCG) Using 3-Dimensional Liposome (라멜라-바이오 나노하이브리드: 3 Dimension-liposome을 이용한 카테킨(EGCG)에 안정화에 대한 연구)

  • Hong Geun, Ji;Jung Sik, Choi;Hee Suk, Kwon;Sung Rack, Cho;Byoung Kee, Jo
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.30 no.2
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    • pp.201-205
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    • 2004
  • In these several years, as many people have been attracted by the functional cosmetics, there are a lot of study to enhance the stability of active ingredients for light, heat, oxygen, etc. in the academic and industrial field. Especially, catechin is well known as strong anti-oxidant, anti-inflammatory and reducing agent for oxidative stress but it is very unstable for light, heat, oxygen. etc. In this study, the stability and skin penetration of catechin are improved by 3-dimensional method. As I-dimension, porous silica is prepared using sol-gel method, and then catechin is adsorbed in pores of silica. As 2-dimension, solid lipid nanoparticles (SLN) are obtained using non-phospholipid vesicles. Finally 3-dimension is completion through lamellar phase self-organization that combines SLN catechin with skin lipid matrix. We used laser light scattering system, cyro-SEM, chromameter, HPLC and image analyzer to analyze our 3-dimentional systems. According to chromameter date, the color stability of 3-dimensional catechin is enhanced by 5-10 times compared with general liposome systems. We also confirmed through HPLC analysis that 3-dimensional catechin is more long lasting. The effect of skin penetration and wrinkle reduction are improved, too.

Effect of Chlorhexidine Mouthrinse on Prevention of Microbial Contamination during EBUS-TBNA: A Study Protocol for a Randomized Controlled Trial

  • Kim, Na Young;Park, Jae Hyeon;Park, Jimyung;Kwak, Nakwon;Choi, Sun Mi;Park, Young Sik;Lee, Chang-Hoon;Cho, Jaeyoung
    • Tuberculosis and Respiratory Diseases
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    • v.84 no.4
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    • pp.291-298
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    • 2021
  • Background: Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is a standard diagnostic method for mediastinal and hilar lymphadenopathy. Although rare, fatal infectious complications can occur following EBUS-TBNA. However, to date, there is a lack of effective preventive strategies to reduce these complications. We started a trial to investigate the effect of chlorhexidine mouthrinse on the prevention of microbial contamination during EBUS-TBNA. Methods: This study is a single-center, parallel-group, assessor-blinded randomized controlled trial (RCT). We will enroll 112 adult participants undergoing EBUS-TBNA using a convex probe, and randomly assign them to two groups at a 1:1 ratio. The intervention group will gargle for 1 minute with 100 mL of 0.12% chlorhexidine gluconate before EBUS-TBNA, while the control group will have no mouthrinse before the procedure. Immediately after completion of EBUS-TBNA on all targeted lesions with an aspiration needle, a needle wash sample will be taken by instilling 5 mL of sterile saline into the used needle. The primary outcome is colony forming unit (CFU) counts in aerobic cultures of the needle wash samples. Secondary outcomes are CFU counts in anaerobic cultures, fever within 24 hours after EBUS-TBNA, and infectious complications within 4 weeks after EBUS-TBNA. Conclusion: This trial was designed as the first RCT to investigate the effect of chlorhexidine mouthrinse on the prevention of microbial contamination during EBUS-TBNA. Results from this trial can provide clinical evidence for a simple, safe, and cost-effective strategy to prevent infectious complications following EBUS-TBNA (ClinicalTrials.gov ID: NCT04718922, registered on 22 January 2021).

An Inquiry on the effect of the formation Jhāpeti-Rites 『Seongmunsanguicho (釋門喪儀抄)』 in 『Osamnanyasinhakbiyoung(五杉練若新學備用)』 (『오삼연약신학비용(五杉練若新學備用)』이 다비법 『석문상의초(釋門喪儀抄)』 성립에 미친 영향)

  • Lee, Sun-Yi
    • (The)Study of the Eastern Classic
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    • no.59
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    • pp.359-386
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    • 2015
  • To date, the study of the $jh{\bar{a}}peti$ is small. "Osamnanyasinhakbiyoung" was found in the Gumamodo University in 2006, research has gained a new opportunity. The '연약(練若)' of "Osamyunyaksinhakbiyoung(오삼연약신학비용)" is an abbreviation of ara?ya should be unified in "Osamnanyasinhakbiyoung(五衫練若新學備用)". The second volume contains the following information. Since the Buddhist ritual of ordinary people, this made according to fit the rules in accordance with the environment(隨方毗尼). Obok(五服) is called according to the meaning Osam(五衫) of dressed standard. Gamguhyodangdo is to install one incense and one lanterns to illuminate their own buddha, is where enshrines the relics(śarīra). Back to the article, which should show the face bitter and sad hearts. Over white paper it should represent an article. Posts containing the meaning of the sacrifice must necessarily meant to inform heaven as articles for the dead. Such "Osamnanyasinhakbiyoung" of structure and contents of the second volume was reflected in "Sungmoonsanguicho(釋門喪儀抄)". "Osamnanyasinhakbiyoung" written intent is reflected in the prolegomena of the "Sungmoonsanguicho" it influenced $Jh{\bar{a}}peti$-Rites during the Joseon Dynasty. "Osamnanyasinhakbiyoung" of prepare after death and "Sunksiyoram(釋氏要覽)" of funeral was incorporated as "Sungmoonsanguicho". It built the $st{\bar{u}}pa$ is a symbol of tranquility achieved a kind of enlightenment. Human life ends with death, and it completed the $Jh{\bar{a}}peti$-Rites in "Sungmoonsanguicho". The significance here is in. Tying the funeral and burial in one enshrine the relics will be shown on the top by the completion of life. In particular, Kankyungdogam(刊經都監) published in the $Jh{\bar{a}}peti$-Rites "Osamnanyasinhakbiyoung" were engraved production and dissemination. That it will have another significance.

An Oceanic Current Map of the East Sea for Science Textbooks Based on Scientific Knowledge Acquired from Oceanic Measurements (해양관측을 통해 획득된 과학적 지식에 기반한 과학교과서 동해 해류도)

  • Park, Kyung-Ae;Park, Ji-Eun;Choi, Byoung-Ju;Byun, Do-Seong;Lee, Eun-Il
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.18 no.4
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    • pp.234-265
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    • 2013
  • Oceanic current maps in the secondary school science and earth science textbooks have played an important role in piquing students's inquisitiveness and interests in the ocean. Such maps can provide students with important opportunities to learn about oceanic currents relevant to abrupt climate change and global energy balance issues. Nevertheless, serious and diverse errors in these secondary school oceanic current maps have been discovered upon comparison with up-to-date scientific knowledge concerning oceanic currents. This study presents the fundamental methods and strategies for constructing such maps error-free, through the unification of the diverse current maps currently in the textbooks. In order to do so, we analyzed the maps found in 27 different textbooks and compared them with other up-to-date maps found in scientific journals, and developed a mapping technique for extracting digitalized quantitative information on warm and cold currents in the East Sea. We devised analysis items for the current visualization in relation to the branching features of the Tsushima Warm Current (TWC) in the Korea Strait. These analysis items include: its nearshore and offshore branches, the northern limit and distance from the coast of the East Korea Warm Current, outflow features of the TWC near the Tsugaru and Soya Straits and their returning currents, and flow patterns of the Liman Cold Current and the North Korea Cold Current. The first draft of the current map was constructed based upon the scientific knowledge and input of oceanographers based on oceanic in-situ measurements, and was corrected with the help of a questionnaire survey to the members of an oceanographic society. In addition, diverse comments have been collected from a special session of the 2013 spring meeting of the Korean Oceanographic Society to assist in the construction of an accurate current map of the East Sea which has been corrected repeatedly through in-depth discussions with oceanographers. Finally, we have obtained constructive comments and evaluations of the interim version of the current map from several well-known ocean current experts and incorporated their input to complete the map's final version. To avoid errors in the production of oceanic current maps in future textbooks, we provide the geolocation information (latitude and longitude) of the currents by digitalizing the map. This study is expected to be the first step towards the completion of an oceanographic current map suitable for secondary school textbooks, and to encourage oceanographers to take more interest in oceanic education.

KOREAN MARS MISSION DESIGN USING KSLV-III (KSLV-III를 이용한 한국형 화성 탐사 임무의 설계)

  • Song, Young-Joo;Yoo, Sung-Moon;Park, Eun-Seo;Park, Sang-Young;Choi, Kyu-Hong;Yoon, Jae-Cheol;Yim, Jo-Ryeong;Choi, Joon-Min;Kim, Byung-Kyo
    • Journal of Astronomy and Space Sciences
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    • v.23 no.4
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    • pp.355-372
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    • 2006
  • Mission opportunities and trajectory characteristics for the future Korean Mars mission have designed and analyzed using KSIV-III(Korea Space Launch Vehicle-III). Korea's first space center, 'NARO space center' is selected as a launch site. For launch opportunities, year 2033 is investigated under considering the date of space center's completion with KSLV series development status. Optimal magnitude of various maneuvers, Trans Mars Injection (TMI) maneuver, Trajectory Correction Maneuver (TCM), Mars Orbit Insertion (MOI) maneuver and Orbit Trim Maneuver(OTM), which are required during the every Mars mission phases are computed with the formulation of nonlinear optimization problems using NPSOL software. Finally, mass budgets for upper stage (launcher for KSIV-III and spacecraft are derived using various optimized maneuver magnitudes. For results, daily launch window from NARO space center for successful Korean Mars mission is avaliable for next 27 minutes starting from Apr. 16. 2033. 12:17:26 (UTC). Maximum spacecraft gross mass which can delivered to Mars is about 206kg, with propellant mass of 109kg and structure mass of 97kg, when on board spacecraft thruster's Isp is assumed to have 290 sec. For upper stage, having structure ratio of 0.15 and Isp value of 280 sec, gross mass is about 1293kg with propellant mass of 1099kg and structure mass of 194kg. However, including 10% margins to computed optimal maneuver values, spacecraft gross mass is reduced to about 148kg with upper stage's mass of 1352kg. This work will give various insights, requiring performances to developing of KSIV-III and spacecraft design for future Korean Mars missions.

Risk Assessment Model for the Delay Protocol in the Conditions of Contract of International Construction Projects (해외 건설공사 공기지연사건의 합리적 대응을 위한 계약조건 리스크 평가 방법)

  • Lee, Hwangku;Shin, Dongwoo;Kim, Kyungrai;Cha, Heesung;Kim, Youngjae
    • Korean Journal of Construction Engineering and Management
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    • v.18 no.6
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    • pp.65-77
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    • 2017
  • Recently, many Korean major construction companies are suffering from profit loss mainly due to a direct impact from delays in their overseas projects. In general, changes are inevitable in a large-scale project, and most of changes are directly linked to construction delay. Therefore, in the event that an extension of time is necessary due to a change, the contractor must manage the delay based on the condition of the contract to effectively manage risks from delay to the completion date. Thus it is important to understand delay protocol defined in the condition of the contract early in the project, but there have been few or no study to propose methodology or tool to support this effort. This paper presents a review on the project planning and controling practices of major Korean construction companies along with the issues on delay claims and disputes in mega-international projects and suggests a tool to assess delay risk in the condition of the contract. To propose a delay risk assessment model for international construction projects, major standard conditions of contract have been reviewed including FIDIC Red Book(1999), PSSCOC(2014) and SIA 9th Edition(2010). To reflect recent trend of major international owners, standard conditions which they are utilizing for their projects also have been reviewed including those of ARAMCO and QP. The model provides a categories of risks to be reviewed on the condition of the contract along with standard level of the risk which is common in the international standard form of the contracts. This study also performed a case study on an actual international project to confirm the effectiveness of proposed model to identify and respond to a delay risk of a project.

A Study on the Royal Banquet Dishes in Naeoejinyeon-Deungnok in 1902 (「내외진연등록(內外進宴謄錄)」을 통해 본 궁중연회음식의 분석적 고찰 - 1902년 중화전 외진연(外進宴) 대전과 황태자의 상차림을 중심으로 -)

  • Lee, So-Young;Han, Bok-Ryo
    • Journal of the Korean Society of Food Culture
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    • v.27 no.2
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    • pp.128-141
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    • 2012
  • This study focused on the historic documents known as $deungnok$, records created during preparations for royal events in the $Joseon$ Dynasty, rather than the often cited $uigwe$, the documents describing the Royal Protocol of the $Joseon$ Dynasty. As a reference to the food served at royal banquets, the $deungnok$ can enhance our understanding of royal banquet foods. Seven specimens of $deungnok$ describing royal banquet foods are currently in existence, created during preparations for royal events by the agencies in charge of food, the $Saongwon$ and $Jeonseonsa$. Owing to the nature of their authorship, the details recorded in these $deungnok$ hold great value as important resources for the study of royal banquet cuisine. $Naeoejinyeon$-$deungnok$, which documented an $oejinyeon$ banquet held at the $Junghwajeon$ Pavilion in November 1902, was somewhat disorganized and fragmented. $Jinyeonuigwe$ was more inclusive and well-summarized, since the former were progress reports to the King during banquet preparations that listed various items separately, such as dishes for each table setting and the kinds of flower pieces, and thus did not present a complete picture of all the details as a whole. The latter, on the other hand, were final reports created upon completion of a banquet, and contained more comprehensive records not only of the $chanpum$ (the menu of dishes served), but also the sorts of tableware and tables, floral arrangements, location, scale, and installation date of the $sukseolso$ (temporary royal kitchens for banquets). They also offer a more effective summary by simplifying details duplicated in identical table settings. Nevertheless, the $Naeoejinyeon$-$deungnok$ recorded some facts that cannot be gleaned from the $Jinyeonuigwe$, including the height of some dishes presented in piled stacks, as well as the specific names of dishes and their ingredients. The comparative study of the historic records in the $deungnok$ and $uigwe$ will be helpful in identifying and understanding the specific foods served at royal banquets. The $oejinyeon$-$seolchando$ diagrams in $Naeoejinyeon$-$deungnok$ depict the table settings for the King and the Crown Prince. The two diagrams contain large rectangles divided into three sections. In each section are similar-sized circles in which the names of dishes and the titles for table settings are recorded. From these records we can see that the arrangements of the table settings for the King and the Crown Prince are similar. The relationships and protocols shown in the arrangement of dishes and table settings for the King and the Crown Prince at royal banquets in the $Seolchando$ appear to be consistent. By comparing the two references, $deungnok$ and $uigwe$, which recorded the dishes served at royal banquets, the author was able to determine the height of some foods served in stacked arrangements, the names of $chanpum$, the ingredients used, and the configuration of the $chanpum$. The comparative review of these two written records, $deungnok$ and $uigwe$, will be helpful for a proper understanding of the actual food served at royal banquets.

A Study on the Determinants of Land Price in a New Town (신도시 택지개발사업지역에서 토지가격 결정요인에 관한 연구)

  • Jeong, Tae Yun
    • Korea Real Estate Review
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    • v.28 no.1
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    • pp.79-90
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    • 2018
  • The purpose of this study was to estimate the pricing factors of residential lands in new cities by estimating the pricing model of residential lands. For this purpose, hedonic equations for each quantile of the conditional distribution of land prices were estimated using quantile regression methods and the sale price date of Jangyu New Town in Gimhae. In this study, a quantile regression method that models the relation between a set of explanatory variables and each quantile of land price was adopted. As a result, the differences in the effects of the characteristics by price quantile were confirmed. The number of years that elapsed after the completion of land construction is the quadratic effect in the model because its impact may give rise to a non-linear price pattern. Age appears to decrease the price until certain years after the construction, and increases the price afterward. In the estimation of the quantile regression, land age appears to have a statistically significant impact on land price at the traditional level, and the turning point appears to be shorter for the low quantiles than for the higher quantiles. The positive effects of the use of land for commercial and residential purposes were found to be the biggest. Land demand is preferred if there are more than two roads on the ground. In this case, the amount of sunshine will improve. It appears that the shape of a square wave is preferred to a free-looking land. This is because the square land is favorable for development. The variables of the land used for commercial and residential purposes have a greater impact on low-priced residential lands. This is because such lands tend to be mostly used for rental housing and have different characteristics from residential houses. Residential land prices have different characteristics depending on the price level, and it is necessary to consider this in the evaluation of the collateral value and the drafting of real estate policy.


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