• The Journal of the Korea Contents Association
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• v.6 no.12
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• pp.71-79
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• 2006

Recently, embedded systems like mobile and portable devices are quickly disseminated around the world. Since these.devices need more computation power as the applications become gradually complicated, the bettery lifetime becomes the most serious constraints. So research efforts have been focused on reducing the power consumption, resulting in producing devices with low-power H/W and S/W components. In this paper, we propose a low-power Java API set using the dynamic power management (DPM) scheme in the J2ME Java Platform on the real-time operating system UbiFOSTM and show that we could save energy up to 30% through experiments using the API set.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.2
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• pp.285-289
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• 2020

The configuration of hierarchical wireless networks is provided to support diverse network environments. In the base station, two system state can be basically considered for the operation management so that the state transition may be occurred between active and sleep modes. Hence, to reduce energy consumption the system operation management of the low power should be considered to the base station system. In this paper we consider the analytical model of Discontinuous Reception (DRX) to investigate the system management. We provide the analysis scheme of base station system by the DRX model, and the low power factor would be investigated for the energy consumption. We also use the finite-state Markov system model that in a system state period the wireless resource request and the operation of service call arrival interval is considered to numerically analyze the performance of energy saving operations of base station.

• Journal of The Korean Society of Inherited Metabolic disease
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• v.23 no.2
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• pp.8-14
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• 2023

The hepatic glycogen storage disease type 0 (GSD type 0) is an autosomal recessive disorder caused by a deficiency of hepatic glycogen synthase encoded by the glycogen synthase 2 (GYS2) gene, leading to abnormal synthesis glycogen. The clinical findings of GSD type 0 are hyperketotic hypoglycemia at fasting state and accompanying postprandial hyperglycemia and hyperlactatemia. GSD type 0 has only been reported in a very small number so far, and the diagnosis is likely to be missed because symptoms are mild, severe hypoglycemia is rare or asymptomatic, or symptoms gradually disappear with age. Essential management strategies include feeding high-protein meals to stimulate gluconeogenesis, frequent meals to prevent hypoglycemia during the day and feeding complex carbohydrates such as uncooked cornstarch to slowly release glucose during nignt. GSD type 0 has a good prognosis, with appropriate treatment, normal growth can be achieved and no complications occur. Significant hypoglycemia occurs less common in adulthood, but ongoing dietary management may be necessary.

• Journal of Korean Medical classics
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• v.19 no.4
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• pp.27-61
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• 2006

수당오대적대근의학발전유소적정책(隨唐五代적代근의學발展有소的政策), 기구(기구), 제도등축점완비료(制度等逐漸完비了). 저시기유정부발전의학교육적정책치득의정적공적(저時期由政府발展의學교育的政策値得의政的功적). 정규의학교육적방면상몰치전과의(定規의學교育的方面上몰置전科의), 안배교육과정(安排교育과程), 임용고시등구비구비료의학교적규모(任用考시等具비具비了의學교的規模), 영외발전료지방의학교육화의학보급(영外발展了地方의學보育和의學普及). 방포의방화지방요로상다착처방적조시백성의료제공방변(방布의方和地方要路上다着처方的조百姓의료提供方便), 야영향료의학화신적보급(也影향了의學和신的普及). 저시기의정상최현저적성과시제고본초학적지위적(저時期의政上最현著的成果是提高本草學的地位的). 태의서내설치료의학교육동시설치료전문약학교육(太의署內設置了의學교育同時설置了전문葯學교育). 이차정부이편수본초학적병반포전국위최초적약전(而且政府以編수本草學籍幷반布全국위最初的葯典). 저시기유정부법제화료의약관리방면적야시대대수획(저時期由政府法制化了의葯管理方面的也是大大收획). 수당이전몰형성의약관리화유소제도(隨唐以前沒形成의葯管理和有소制度), 규모(規模). 의생근거일정적법률근환자관계병엄가구관자기(의生根据一定的法律근患者관系幷엄可拘管自己). 수당오대의정흔다방면상탁유성효(隨唐五代의政흔多方面上卓有成效), 단시궁정의약기구적규모흔방대(但是宮廷의葯기구的規模흔방大), 인원과잉(人員과剩), 역궁정의관수공제(亦宮廷의官受控制), 불능발휘자기적능력(不能발揮自己的能力). 야불능발전위백성적의약기구(也不能발展위百姓的의葯기구). 인위정부불태중시의학(因위政府不太重시의學), 소이의생적지위잉시불고(所以의生的地位仍是不高). 나취시저시기의정적결점(那就是저시期의政的缺点).

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.12 no.4
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• pp.345-361
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• 2014

The systematic quality assurance activities on documents of the safety assessment are required for the safety case of the low- and intermediate-level radioactive waste disposal facility. In this paper, quality assurance system focused on the input data including the site characterization, groundwater flow, system design and monitoring are prepared and discussed. Rule for the input data selection is suggested and applied for the safety assessment which is based on the in-situ/experiment observations, final facility design and waste pileup plan, engineered barrier, field monitoring, recent biosphere, and radionuclide inventory. The reduction of data uncertainty will be expected to contribute to the safety of disposal facility further.

• Journal of Advanced Navigation Technology
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• v.22 no.1
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• pp.13-19
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• 2018

In this paper, we classified a flight pattern of unmanned aerial vehicle(UAV) which will be operating in UTM system and analyzed its flight pattern by purpose of use. Flight patterns of UAV are sorted into three patterns which are circling, monitoring and delivery. We considered four cases of industry areas using UAV which are agriculture, infrastructure monitoring, public safety & security(p.s.s) and delivery. It is necessary to build a simulation model as a verification tool for applying the flight pattern according to the use of UAV to the real UTM system. Therefore, we propose the simulation model of UAV with updating states over time. We applied simulation to UAV monitoring flight pattern, and confirmed that the flight was done by the given input data. The simulation model will be used in the future to verify that the UAV has various flight patterns and can operate safely and efficiently for the intended use.

• The Journal of the Korea Contents Association
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• v.7 no.6
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• pp.69-78
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• 2007

In recent years, embedded mobile systems have been expanding their application domains from embedded portable devices which only execute a specialized application such as MP3 player or digital camcoder to digital convergence devices which execute more complicated applications converged various functionalities such as video and audio play, digital dictionary, DMB, games, phone, etc. As it requires the increasing hardware performance such as more faster CPU and more larger RAM, display, disk size, it has brought about a corresponding increase in power consumption. However, coupled with relatively small gains in battery capacity over recent years, the importance of software architecture including intelligent power management has become paramount. In this paper, we have ported UbiFOSTM with energy saving techniques on the ARM9-based MBA2440 platform. For energy savings, we adapted the dynamic power management and the device power management schemes based on monitoring workload. Experimental results with some well-known applications show that proposed low power technique could save energy up to 24 %.

• Journal of dental hygiene science
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• v.14 no.2
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• pp.214-222
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• 2014

This study measures the effect of oral health promotion program based on community networking for elementary school students in community child center. The community networking were constructed of community health center, headquarters for community child center and school of dental hygiene in community. First, we were educated the student and teacher of community child center, separately. Community health center planned and evaluated the program, and school of dental hygiene ran the maintenance program once a month for 3 months and evaluated the program. The teacher of community health center were supported and monitored the children. The comparison was done in independent t-test of awareness, knowledge and behavior of children of community child center in both lower grades and upper grades and paired t-test of patient hygiene performance (PHP) index was conducted before and after oral health promotion program. As a result, PHP index and oral health knowledge increased significantly after oral health program in lower grades and upper grades (p<0.001). The positive attitude for oral health about "Whatever I do, my tooth-will be decayed" increased more in upper grades better than lower grades after oral health promotion program (p<0.05). We suggest that oral health program based on community networking should be constructed for oral health promotion of elementary school students in community child center.

• Journal of Digital Convergence
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• v.14 no.9
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• pp.379-387
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• 2016

The purpose of this study was to examine the relationship between maternal age and infant mortality in Korea(n=617,867). Data of Korean vital statistics linked National Infant Mortality Survey conducted on births in 1999 were used in this study. The odds ratios (ORs) of infant death by maternal age were estimated with the multiple logistic regression model, adjusting for gender, plurality, birth order, low birth weight, and congenital malformation. After adjusting for the relevant variables, the odds of infant death in the group of maternal age with less than 20 years(Odds ratio [OR], 5.29, 95% confidence interval [CI], 3.51-7.98), 20-24 years(OR, 1.44, 95% CI, 1.23-1.69), 35-39 years(OR, 1.28, 95% CI, 1.11-1.46), and more than 40 years(OR, 1.94, 95% CI, 1.53-2.45) was higher than that of reference group(25-29 years). In conclusion, the higher infant mortality in the group of maternal age with less than 25 years and more than 35 years in Korea appears to be due to higher proportion of low birth weight and pre-term birth. Prenatal care intervention programs which tackle biological factors for advanced maternal age and address socio-economic problems and social stigma for early maternal age should be devised.

• Industry Promotion Research
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• v.6 no.1
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• pp.79-86
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• 2021

Due to the change in the demographic structure, the problem of low birth rate and aging population leads to a serious decrease in human resources, and the necessity of introducing foreign workers is increasing. This study believes that the introduction of foreign workforce is the most effective to expand the working-age population in the era of low birthrate and aging, when demographic changes begin in earnest, and to this end, it sought to devise measures to improve the legal system for migrant workers. As a result of this study, first, the legal system for migrant workers should be unified and improved. It is necessary to establish or unify management agencies so that the 「Immigration Control Act」 and the 「Labor Act」 can establish a cooperative relationship. Second, the 「Immigration Control Act」 should be revised to make it easier for migrant workers to find employment. It is necessary to positively review the employment permit system and acquisition of nationality. Third, there should be no equity or discrimination against migrant workers. Under the principle of mutual benefit, employers and migrant workers should not be equally discriminated against. Fourth, the social insurance system must be added to the legal system of migrant workers. Therefore, the legal system should be reorganized so that migrant workers are not discriminated against in various insurance systems including the four major social insurance systems. In conclusion, the problem of low birthrate and aging population has become a serious social problem due to changes in the demographic structure, and the decrease in the possible generation population has reached a level of concern. The importance of migrant workers' employment and work environment is increasing. Nevertheless, related legal and institutional problems still exist, and measures to improve the legal system for migrant workers are needed.