• Journal of Korean Home Economics Education Association
• /
• 제6권1호
• /
• pp.1-15
• /
• 1994

This study examined the relations between home-environment, mother´s vacational environment, vocational sense and the career maturity of their child in girls high school. Also the study tried to help the children find the proper vocation and to guide them in school. The subjects of this were 514 couples of mothers and their children in girl´s school (2nd grade) living in In-cheon. Statistics used for data analysis are Frequency, Percentage, One-way ANOVA, DMR(Ducn´s Multiple Range Test), T-test and Pearson´s correlation coefficient. The main results were as follows: 1. To think of the career maturity of child in home-environment variable, it differed significant-ly by mother´s standard of education and father´s vocation. 2. According to the mother´s vocational environment variablees, career maturity of child differed significantly by work-state the degree of vocational satisfication. 3. To think of the general tendency of mother´s view of vocation the attitude of choosing vocaion is independent whether mother has work or not. The attitude of work and sex-role is openhearted whether mother has work or not. The attitude of work-value is more important in the case of mother´s having work. The attitude of work-respect is formal in both case. In general whether mother has work or not there´s no difference in the mother´s vocational sense. 4. The corelations between the mother´s vocational sense and career maturity differed significantly by the attitude of chdoosing vocation. 5. The career maturity of high school student differed significantly whether they are commercial high school student or academic high school student. Based on the findings it is recommended the mother´s age the standard of education the degree of vocational satisfication and the view of vocation are more influenced on the child´s career maturity than the mother´s work itself.

• 대학교육
• /
• 통권5호
• /
• pp.116-130
• /
• 1983

• Proceedings of the KIPE Conference
• /
• 전력전자학회 2012년도 전력전자학술대회 논문집
• /
• pp.441-442
• /
• 2012

LabVIEW is faster than text language based program regarding development time and can monitor the output of data fast without the separate compiling work as the graphic-based graphical programming language. And, its coding is fast because it is designed by connecting the function with the wire and its has the merit of relatively intuitive UI. In this paper, data transmission and receiving between the program that is implemented in C language as CAN communication method that is strong against noise and used in power electronics application field variously and LabVIEW based program are explained. And, the design of LabVIEW based CAN communication program, data analysis and GUI screen composition that is convenient for monitoring are shown.

• Transactions of the Korean Society of Mechanical Engineers B
• /
• 제28권12호
• /
• pp.1573-1581
• /
• 2004

Thermodynamic principles are described with a new point of view. In present study, the interaction between two systems is focused instead of the behavior of a system in conventional thermodynamics. The state change of a system cannot occur by itself but it is the result of the interaction between systems. However, the interaction itself is also the result of another kind of interaction, the interaction between two interactions. To reconstruct thermodynamics with such a point of view, the reversible world is imagined, in which conservations and measurements are discussed. There exists a conserved quantity for each mode of reversible interaction. The conserved transferring quantity in the interaction between interactions is the effective work, which is supposed to be measurable and conserved in reversible world. Effective work is the primary concepts of energy. It is the key factor to explain measurements, energy conservation and energy dissipation. The concepts developed in reversible world are applied to the real world in which irreversible phenomena may occur. Irreversibility is the result of effective energy dissipation, in which effective work irreversibly changes into entropy. A quantitative relation between the disappearing effective work and the generated entropy is dissipation equation which is given by experiments. A special temperature scale to give a very simple type of the dissipation equation is the absolute temperature scale, which gives the conventional conservation of energy.

• Journal of the Ergonomics Society of Korea
• /
• 제34권2호
• /
• pp.135-143
• /
• 2015

Objective: The purposes of this study are to investigate ergonomic problems and to propose their improving measures in office environment of big general hospitals. Background: Office tasks have varying risk factors of work-related musculoskeletal disorders (WMSDs). The first symptom resulted from the office work was recognized as an occupational disease in Korea in 1986. Although the symptoms have increased since its first recognition, there has been few study on the effect of office work environment settings. Method: First, the author took pictures of working scenes performed in three big university hospitals. Next, the pictures were analyzed in view point of ergonomics. Based on the analysis, their improving measures were proposed for reducing work stress. Results: The results showed that most physical office environment settings such as dimensions of tables/desks and chairs, leg room, thigh, knee and foot clearances, and chairs used did not satisfy the ergonomically recommended design guidelines. In addition, some clerks placed personal belongings under their desks, put monitors in high position and did not lean against the backrest of chairs in seated tasks, which resulted in poor working postures of leg, back, neck etc. It is recommended that the hospital management should provide their clerks with ergonomically designed office furniture and continuously perform ergonomics training program for raising clerks' recognition for office ergonomics. Conclusion: Most office environment settings investigated in this study were not in good condition in view point of ergonomic design for the settings. Application: It would be useful as basic data for establishing ergonomically good office environment in hospitals.

• Journal of Families and Better Life
• /
• 제13권4호
• /
• pp.115-124
• /
• 1995

The purpose of this study was to accept its contents as lessons for today and to search for the correct way to lead home economy of the future by way of retranslating home economic view in literatures and documents of Cho-sun Dynasty(1392-1910) Through studying Cho-sun's literatures and documents: 「Ne-hun」 by the queen So He 「Kyou-dyoung-yo-ram」by Lee Whang 「Kyung-mong-yo-kul」by Lee Yul 「Song-ho-sa-sul」by Lee IK 「Sa-so-jol」by Lee Duk Moo「Buk-hak-ee」 by Park Je Ka 「Mok-min-sim-su」 by Jung Yak Yong. The results of this study can be summarized as follows : 1. The view of income: 1) Cut down on the too much greed of property (property income) 2) Work hard with diligence(earned income). 2. The view of expense : 1) Get food clothing and housing with frugality 2) Spend money for home rites and reception of guests with manner and truth without extravagnace. 3. The view of buying and selling: Buy and sell with credit. 4. The view of borrowing and lending: Borrow and lend money honestly,. 5. The view of home book-keeping : Keep home book-keeping every day. 6. The view of economic preparation : Save for a rainy day wisely.

• Journal of Power System Engineering
• /
• 제17권4호
• /
• pp.58-63
• /
• 2013

This paper presents the new cascade liquefaction cycles using $CO_2-C_2H_6-N_2$ and $CO_2-N_2O-N_2$. The performance of the cascade liquefaction cycles with respect to temperature differences in the LNG heat exchangers is analyzed using HYSYS software and then compared the performance of these cycles with phillips optimized cascade liquefaction cycle. The coefficient of performance of the new liquefaction cycles considered in this study decreases with the temperature differences in the LNG heat exchangers, but the compressor work, expander work and heat capacity in the LNG heat exchanger increases, respectively. From the comparison of performance of three cycles, the cascade liquefaction cycles using $CO_2-C_2H_6-N_2$ showed the highest COP. And the cycles using $CO_2-C_2H_6-N_2$ and $CO_2-N_2O-N_2$ presented the second and third highest COP, respectively. In the view of performance, the optimized cascade liquefaction cycle using $C_3H_8-C_2H_4-C_1H_4$ yields much better COP. But, in the environment view, it is found that the cascade liquefaction cycle using $CO_2-C_2H_6-N_2$ shows favorable characteristics.

• Bulletin of the Korean Chemical Society
• /
• 제22권8호
• /
• pp.827-832
• /
• 2001

The excitation temperature and electron number density have been measured for end-on-view ICP discharge. In this work, end-on-view ICP-AES equipped with the newly developed “optical plasma interface (OPI)” was used to eliminate or remove the neg ative effects caused by end-on-plasma source. The axial excitation temperature was measured using analyte (Fe I) emission line data obtained with end-on-view ICP-AES. The axial electron number density was calculated by Saha-Eggert ionization equilibrium theory. In the present study, the effects of forward power, nebulizer gas flow rate and the presence of Na on the excitation temperature and electron number density have been investigated. For sample introduction, two kinds of nebulizers (pneumatic and ultrasonic nebulizer) were utilized.

• The Journal of the Acoustical Society of Korea
• /
• 제38권2호
• /
• pp.161-167
• /
• 2019

In this paper, the performance verification of an around-view sonar and an excavation depth measuring sonar applicable to track-based ROVs (Remotely Operated underwater Vehicles) for heavy duty work is studied. For the performance verification, an experiment is carried out in a water tank and at sea by attaching the around-view sonar and the excavation depth measuring sonar for a heavy work ROV. In the case of the around-view sonar, image sonars are mounted on ROV in four directions (front, back, left and right) and in the case of the excavation depth measuring sonar, the same kind of MBES (Multi Beam Echo Sounder) is mounted on the front of the ROV. The result of an operation test of the ROV equipped with these sonars shows that the sonar systems are rarely affected by high turbidity due to sedimentation during the operation. In the case of the around-view sonar, it is possible to see rock formation, gravel and sandbank 30 m ahead of the ROV. It is confirmed that the excavation depth can be measured after the ROV has performed the excavation. This experiment demonstrates that the ROV can improve the efficiency of the work by utilizing the around-view sonar and the excavation depth measuring sonar.

• Journal of the Korea Institute of Building Construction
• /
• 제8권2호
• /
• pp.71-79
• /
• 2008

The rebar work is very related to the safety and durability of the building. Recently, the rebar work is produced some serious problems due to the lack of skillful crafts-man and the rising cost of rebar materials. Many papers have dealt with the rebar work of the manufacturing system in plants with a view to improvement those problems. But, the research on the rebar work of the manufacturing system in field is in a insignificant condition. This study presents the following improvement schemes as a result. First, the education strengthening for evaluation on practical affairs, second, the reinforcement of drawing & management in shop drawing and finally the simplification of apartment rebar work in slab. Also, this paper aims at advancing apartment rebar work by the actual condition survey in slab work. The further research will be needed about the whole structure parts such as foundation, wall, girder and rebar truss-deck plate as one of the improvement methods.