• Bulletin of the Korean Chemical Society
• /
• v.33 no.2
• /
• pp.541-548
• /
• 2012

New candidates composed of anthracene and 4-alkylethynylbenzene end-capped oligomers for OTFTs were synthesized under Sonogashira coupling reaction conditions. All oligomers were characterized by FT-IR, mass, UV-visible, and PL emission spectrum analyses, cyclic voltammetry (CV), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), $^1H$-NMR, and $^{13}C$-NMR. Investigation of their physical properties showed that the oligomers had high oxidation potential and thermal stability. Thin films of DHPEAnt and DDPEAnt were characterized by spin coating them onto Si/$SiO_2$ to fabricate top-contact OTFTs. The devices prepared using DHPEAnt and DDPEAnt showed hole field-effect mobilities of $4.0{\times}10^{-3}cm^2$/Vs and $2.0{\times}10^{-3}cm^2$/Vs, respectively, for solution-processed OTFTs.

• Journal of Korean Academy of Nursing
• /
• v.19 no.2
• /
• pp.147-159
• /
• 1989

The main Purpose of this survey was to identify for elements of an effective hospital infection control program for Korea. Nurses and doctors who had participated in an education program for infection control or were re s ponsible for hospital infection control were selected as data informers. The data were collected from 51 subjects by employing a Delphi technique in a series of three rounds from september 1, 1987, to March 31, 1988. IN each round the responses to questionaires were analyzed and the results were communicated back to the individuals. Finally 32 elements of effective hospital infection control program were reduced to 10 elements. 10 elements are as follows ; 1) Hospital administrator's knowledge of importance and necessity for HIC(hospital infection control) 2) Supporting HIC administratively 3) Constituting infection control committee and role of ICC 4) Developing an eductional program and providing a work manual for the hospital infection control staff 5) Educating and informing medical staff about hospital infection 6) Surveillance for hospital infection 7) Developing patient care technique 8) Controlling the hospital environment 9) Executing regular health examination of all medical staff 10) Recruiting the medical staff sufficiently Three rankings of response rate about 32 elements are as follows ; 1) Hiring a full tim staff member for the HIC(66%) 2) Establishing a hospital policy and standards for the HIC(66%) 3) Activating the infection control committee and taking administrative action to support the ICC(63%) In addition the rankings of importance score by Likert 5 scale are as follows ; 1) Washing hands scrupulously(4.88) 2) Nurses participation as key members of the ICC(4.75) 3) Reviewing and evaluating all ongoing aseptic techniques (4.69) In conclusion, first of all, administrative support must be given to hiring a full time staff member and to organization of infection control committee for the HIC in Korea.

• Survey Research
• /
• v.8 no.1
• /
• pp.31-54
• /
• 2007

This paper examined the electoral polling methodologies such as sampling method, sampling frame and the classification of the don't-know responses. Quota sampling method seemed to be one of the major factors for the declining trust in the poll results. We suggested that new procedures for random sampling as well as the bad number screening procedures for RDD selection of phone numbers need to be developed. Also we reviewed how the KBS used the polls in defining voters' agenda and in communicating the public agenda to the candidates. In Korea, rates for the polls were based mainly on the number of interviews completed. It seemed to keep the polling companies from tim new and more time-demanding polling methods. Also various utilization of the polls are limited by the tendency to keep the questionnaire short.

• Journal of Korea Spatial Information System Society
• /
• v.11 no.2
• /
• pp.177-181
• /
• 2009

Developing u-Public facilities for application u-City is to combine both the state-of-the art of the construction and ubiquitous computing and must be flexibly comprised of the facilities for the basic service of the building such as air conditioning, heating, lighting and electric equipments to materialize a new format of spatial planning and the public facilities inside or outside. Accordingly, in this paper we suggested the time pattern system for predicting the most basic power system loads for the basic service. To application the tim e pattern we applied SOM algorithm and k-means method and then clustered the data each weekday and each time respectively. The performance evaluation results of suggestion system showed that the forecasting system better the ARIMA model than the exponential smoothing method. It has been assumed that the plan for power supply depending on demand and system operation could be performed efficiently by means of using such power load forecasting.

• Korean journal of food and cookery science
• /
• v.11 no.2
• /
• pp.158-163
• /
• 1995

This study was surveyed and compiled the contribution about acorn in korea .the physico-chemical properties of acorn and acorn starch. preparation of acorn starch and elimination of the acorn tannin, the rheological properties of acorn starch gel. Nutrition of acorn and antioxidative activity of tannin in acorn extract. The result obtained were as follow. 1. The chemical compositions of acorn were water 6.5∼13.7%, crude ash 1.9∼3.4%, crude fat 1.1∼5.0%, crude protein 5.8∼7.8%, crude fiber 2.1∼3.6%, N-free extract 71∼77.5%, total tannin 4.6∼9.3%, Ca 92.7∼460.9mg%, p 80.0∼740.9mg%, Na 66.2∼93.9 mg%, and K 867.9∼983.1mg%. 2. The acorn tannin was extracted with water, acetone, and ethanol. The generation method was wash SE settling method with water. 3. The shape of acorn starch granule was rounded triangular and some elliptical, rasing power 12.4∼12.5, Blue value 0.43∼0.47, Alkali number 10.8∼11.3, Amount of Arnylose 28.8∼30.50% Tannin contents on the initial go tim-zation temperature of acorn starch were not influenced but maximum and cooling viscosity o the acorn starch were decreased. 4. Nutritional effect and diet absorption rate were not influence, by rice and 20% T-A(elimination of tannin from the acorn) mixed diet, and the content of lipid in s rum were not influenced by rice 40% and T-A (elimination of tannin from the acorn) mixed diet. 5. jallic acid, digallic acid, gallotannin were contained in acorn powder extract. The main antioxidative : stlvity was speculated due to the gallic acid.

• The KIPS Transactions:PartD
• /
• v.14D no.1 s.111
• /
• pp.83-88
• /
• 2007

In this paper, we introduce MDA based Development Method for Embedded Software Component. This method applies MDA approach to solve problems about reusability of the heterogeneous embedded software system. With our proposed method, we produce 'Target Independent Meta Model'(TIM) which is transformed into 'Target Specific Model'(TSM) and generate 'Target Dependent Code' (TDC) via TSM. We would like to reuse a meta-model to develop heterogeneous embedded software systems. To achieve this mechanism, we extend xUML to solve unrepresented elements (such as real things about concurrency, and real time, etc) on dynamic modeling of the particular system. We introduce 'MDA based Embedded S/W Modeling Tool' with extended XUML. With this tool, we would like to do more easily modeling embedded or concurrent/real time s/w systems. It contains two examples of heterogeneous imbedded systems which illustrate the proposed approach.

• Journal of Ocean Engineering and Technology
• /
• v.34 no.3
• /
• pp.217-226
• /
• 2020

An offshore plant is an offshore platform that can process oil and gas resources in rough seas with a poor working environment. Moreover, it is a complex structure with different types of offshore facilities and a large amount of outfitting that connects different offshore installations. In particular, an enormous amount of various piping materials is installed in a relatively narrow space, and thus, the difficulty of working is relatively high compared to working in ships or ground plants. Generally, when the 3D detailed design is completed, an offshore plant piping process is carried out at the shipyard with ISO 2D fabrication drawings and ISO 2D installation drawings. If a worker wants to understand the three-dimensional piping composition in the working area, he can only use three-dimensional viewers that provide limited functionality. As offshore plant construction progresses, correlating work with predecessors becomes more complicated and rework occurs because of frequent design changes. This viewer function makes it difficult to identify the 3D piping structure of the urgently needed part. This study deals with the process support method based on a system using a 3D simulator to improve the efficiency of the piping process. The 3D simulator is based on the Unity3D engine and can be simulated by considering the classification and priority of 3D models by the piping process in the system. Further, it makes it possible to visualize progress information of the process. In addition, the punch content can be displayed on the 3D model after the pipe inspection. Finally, in supporting the data in relation to the piping process, it is considered that 3D-simulator-supported piping installing could improve the work efficiency by more than 99% compared to the existing method.

• Journal of electromagnetic engineering and science
• /
• v.18 no.1
• /
• pp.63-69
• /
• 2018

This work demonstrates attenuation effects of plasma on waves propagating in the 26.5-40 GHz range. The effect is investigated via experiments measuring the transmission between two Ka-band horn antennas set 30 cm apart. A dielectric-barrier-discharge (DBD) plasma generator with a size of $200mm{\times}100mm{\times}70mm$ and consisting of 20 layers of electrodes is placed between the two antennas. The DBD generator is placed in a $400mm{\times}300mm{\times}400mm$ acrylic chamber so that the experiments can be performed for plasma generated under various conditions of gas and pressure, for instance, in air, Ar, and He environments at 0.001, 0.05, and 1 atm of pressure. Attenuation is calculated by the difference in the transmission level, with and without plasma, which is generated with a bias voltage of 20 kV in the 0.1-1.4 kHz range. Results show that the attenuation varies from 0.05 dB/m to 9.0 dB/m depending on the environment. Noble gas environments show higher levels of attenuation than air, and He is lossier than Ar. In all gas environments, attenuation increases as pressure increases. Finally, electromagnetic models of plasmas generated in various conditions are provided.

• Korean Journal of Human Ecology
• /
• v.23 no.1
• /
• pp.149-161
• /
• 2014

The purpose of this study was to investigate the nutrition teachers' operation and demand of dietary life education in Jeonbuk Province. The study was carried out using a self administered questionnaire and the subjects were 190 nutrition teachers. The questions were general characteristics of the subjects, operating status as frequency, place, the main use time, and training demand on dietary life education by elementary school and middle & high school, teaching career, and training hours. The results are as follows. Most of the subjects were female(98.9%), more than half were 40's(52.1%) in their age, school work career was 13.2 years. Frequency of the dietary life education operation was once per month(56.8%), 2~3 times per month(27.9%), and place of education were dinning room (49.7%), classroom(25.9%). Almost of the subjects(90.4%) recognized the facilities for education was lack, 89.3% of them did the education materials was lack, also. The desirable frequency of dietary life education was once per month(48.9%), and once per week(35.3%.) The half of the subjects recognized the objects of the dietary life education was not only students but also their parents and teachers. The proper education time was dietary life education tim (34.2%), discretion activity time(31.1%). Most of the subjects(95.7%) had willing to get training, the proper training program was 30 hours, and they prefer summer vacation(61.0%) than winter vacation(30.5%) and semester(8.6%). Proper experimental practice ratio of environment : health : thanks were 30% : 43% : 27%. It is concluded that the demand of nutrition teachers is necessary for their education program in elementary and middle & high school.

• Fashion & Textile Research Journal
• /
• v.16 no.1
• /
• pp.26-34
• /
• 2014

This study considered movie costumes shown in 'Alice In Wonderland' by Tim Burton based on the Theory of Fantasy in Literature by Tzvetan Todorov and Rosemary Jackson. The research method used was a case study on expression types of fantasy used in movie costumes with a literature research based on the Theory of Fantasy in Literature. The Theory of Fantasy in Literature has significance in suggesting a new theoretical approach for understanding a visual perspective and aesthetic characteristics shown in fashion as well as movie costumes. The conclusions of the study are as follows. First, fantasy can connote characteristics of the marvelous, the uncanny, and the imitative through a consideration of Theory of Fantasy in Literature. Second, the marvelous is what is not beautiful, not ugly, but is strange and surprising, and what escapes from the existing norm. The characteristics of the marvelous in movie costumes are expressed through cross-dressing or displayed by allowing the personified animal to wear clothes. Third, the uncanny is something that causes grotesque, disgusting, comic and recreational responses. The characteristics of the uncanny in movie costumes are expressed through exaggerating and artificially transforming the body. Fourth, the imitative is the property of trying to imitate or follow other things. The characteristics of the imitative in movie costumes are indicated by dismantling and expanding a form through borrowing costumes from various ages.