• Journal of Information Technology Applications and Management
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• v.29 no.5
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• pp.27-37
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• 2022

This study intends to link agricultural machine history data with related organizations or collect them through IoT sensors, receive input from agricultural machine users and managers, and analyze them through AI algorithms. Through this, the goal is to track and manage the history data throughout all stages of production, purchase, operation, and disposal of agricultural machinery. First, LSTM (Long Short-Term Memory) is used to estimate oil consumption and recommend maintenance from historical data of agricultural machines such as tractors and combines, and C-LSTM (Convolution Long Short-Term Memory) is used to diagnose and determine failures. Memory) to build a deep learning algorithm. Second, in order to collect historical data of agricultural machinery, IoT sensors including GPS module, gyro sensor, acceleration sensor, and temperature and humidity sensor are attached to agricultural machinery to automatically collect data. Third, event-type data such as agricultural machine production, purchase, and disposal are automatically collected from related organizations to design an interface that can integrate the entire life cycle history data and collect data through this.

• Journal of Convergence for Information Technology
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• v.10 no.7
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• pp.58-66
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• 2020

The purpose of this study was to identify the relation of health behaviors and the quality of life by life cycle of hypertensive patients. This study was conducted by analyzing secondary data with data from the 2017 Community Health Survey. The subjects were total of 62,056 who were diagnosed with hypertension and analyzed using the SPSS WIN 20.0 program. As a result of the study, As a result of the study, first, hypertension treatment and drug compliance were significantly lower in adulthood than in middle-aged and older adults. Second, it was confirmed that the quality of life score by life cycle was the highest in adulthood and decreased as age increased. Third, the quality of life according to health behaviors differed according to drinking, exercise, and low-salt diet throughout the life cycle. Considering the results presented in this study, it is suggested that health education by life cycle is essential for lifelong health management of hypertensive patients. In particular, it is considered that a convergence approach such as education and medical approaches will be needed to develop measures to increase drug compliance in adult hypertensive patients and to have healthy health behaviors to improve quality of life.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.20 no.8
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• pp.556-562
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• 2008

The building HVAC systems have very different qualities of performance and durability with the superintendent's ability for management and maintenance. The poor management of these systems finally lead to the shortening of the life expectancy and result in the increase of operating costs and energy consumptions due to low efficiencies. This study presents an example of appropriate use of the LCC(Life Cycle Cost) analysis in a process of maintaining and repairing old HVAC equipments, by demonstrating the difference of optimal economic life, decrease of running cost, and energy consumption according to the management level of the HVAC equipments. But there are no reliable life expectancy and performance history data at present for optimal management of various building service equipments. Therefore, it is necessary to construct long-term database on operation results of them for more accurate and optimized LCC analysis.

• Journal of Families and Better Life
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• v.15 no.2
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• pp.87-98
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• 1997

The purpose of this study were to examine the relationship among the planning implementing and satisfaction on home education and the soundness of home life. The samples were composed of 629 parents(home educators) selected by family life cycle and local distribution. Consequently the findings of this study were that planning have a significant effect on implementing on home education. Also implementing have a more significant effect on soundness of home life than satisfaction on home education.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.2
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• pp.83-94
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• 2019

Recently, the importance of Total Life Cycle System Management (TLCSM) and LIFE-CYCLE COSTS management is increasing in the development of weapon systems. In cost management, cost forecasting is important from the initial development stage, but it is difficult to predict the total life cycle cost at the development stage. In this study, we propose efficient management cost calculation and management at the development stage of the weapon system by comparison analysis between the PRICE-HL model and NemoSIM to calculate the maintenance cost under the CAIV concept. Based on the study results, further in-depth analyzes of the PRICE-HL model and NemoSIM input values / results are performed. In addition, we provide a more accurate method of calculating the cost of maintaining and operating the weapon system and a plan to utilize the result of NemoSIM in the ILS element development.

• Journal of Families and Better Life
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• v.14 no.4
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• pp.233-248
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• 1996

The purpose of this study were 1) to identify housing consumption over family life cyle and 2) to analyze the propensity of residential mobility and its contributing factors over family life cycle. For these purposes the 1993 KHPS data was used. The sample in this study consisted of 2,796 couple households. Satistics employed for the analysis were frequencies means and logistic regression analysis. As the number of children and the children's age increased the housing consumption increased. There were many factors such as husband's education satisfaction of health and family relations monthly income wealth debt owning a car home ownership duration of residence and the satisfaction with housing contributing to housing consumption and propensity to move. Those with home ownership higher wealth higher satisfaction with health higher expenditure, longer duration of residence and higher satisfaction with housing tend to move more frequently. However those with low educational attai ment less satisfaction with family relation less income and having no debts were likely to move.

• Journal of Families and Better Life
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• v.14 no.2
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• pp.51-60
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• 1996

The purpose of this study is to identify the objective picture of developmental pattern of marital satisfaction of couples based on family life cycle length of marriage marriage cohort birth cohort and age of couples using data from 317 couples in urban cities. The result indicate that the U-curve of marital satisfaction is the special pattern of family life cycle while W-curve is more dominant pattern when data are analysed with length of marriage birth cohort and marriage cohort. The couples differ in their assessment of marital satisfaction through entire their life span which seems for wives to become more dissatisfied over time. The similarity of developmental pattern the spouses appears only in their birth cohort. Discussion and recommendations for future research of the marital satisfaction are suggested.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.728-734
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• 2006

유비쿼터스 컴퓨팅 환경에서 상황정보 관리자는 특정인 주변의 상황정보의 변화를 관찰하여 그 사람의 현재 상태를 추론하는 역할을 한다. 지금까지의 상황정보 관리자는 사용자의 상태를 추론하는 과정에서, 관련된 상황정보 값들의 변화를 곧바로 사용자 상태의 변화로 간주하기 때문에, 사용자의 의도와는 상관없이 빈번하게 사용자 상태가 변화되는 결과가 초래되었다. 다시 말하여, 실제 사용자가 현재의 추론된 상태를 계속 유지하고 싶은 의도를 지닌 경우에도, 주변의 특정 상황정보의 값이 규칙에서 규정한 것과는 다르게 조금이라도 변하게 되면, 현재까지 유지되던 사용자의 상태 상황정보가 새로이 추론된 사용자상태 상황정보로 대체되게 되는 것이다. 따라서 해당 사용자는 전 상태를 기반으로 받고 있던 서비스를 더 이상 제공받지 못하게 되는 문제가 생기게 된다. 본 논문에서는 실제로 지속될 필요가 있는 것과 지속될 필요가 없는 상황정보를 구분하여 사용자의 상태 상황정보를 관리하고 범용적으로 적용될 수 있는 메커니즘을 제안한다. 본 메커니즘을 적용하게 되면, 사용자의 상태 상황정보의 존립에 영향을 미치는 주변 상황정보의 값이 달라지게 되어도, 활성화되어 있던 당시의 사용자의 상태정보는 '보류'된 상태로 남아있다가 활성화시키는 이벤트가 발생하였을 때에 '재개'되어 보류되기 전까지 서비스의 상태 그대로, 사용자의 생활패턴과 의도에 부합되는 서비스를 지속적으로 제공할 수 있게 된다.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2006.11a
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• pp.431-434
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• 2006

Due to rapid technology shifts and demand uncertainty, there is a high risk that inventoried products will become obsolete. Consequently companies have to decide capacities considering product life cycle and demand variation. In this paper, 1 will analyze previous research, and then provide taxonomy of them and propose further research directions.

• Journal of the Korean Society for Precision Engineering
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• v.20 no.9
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• pp.27-31
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• 2003