• 성인간호학회지
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• 제16권4호
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• pp.668-676
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• 2004

Purpose: The purpose of this study was to investigate factors determining health behavior for middle-aged adults in relation to stress coping behaviors, cognitive factors, social support, and sociodemographic variables. Method: The questionnaire survey was carried out on a convenience sample of 203 middle aged in a community settings. The data analysis procedure included frequency, t-test, ANOVA, Pearson correlation coefficient, and stepwise multiple regressions using health behavior as dependent variable. Result: Among the sociodemographic variables, factors such as sex, educational and eonomic levels were associated with the health behaviors. There were significant correlations between health behaviors and saliency of health, social support, and positive-stress coping behaviors. Stepwise multiple regression revealed that the factors such as positive-stress coping behaviors, saliency of health, sex, and education turned out to be significant affecting factors. Twenty eight percent of varience in health behavior was explained by these factors. Conclusion: Positive-stress coping methods were turned out to be the most important effective factors in practicing of health behaviors of middle aged. The necessity of an intervention considering the situation related to their stress and coping methods in middle aged so as to promote positive health behaviors was suggested.

• 가정과삶의질연구
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• 제31권1호
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• pp.39-48
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• 2013

This study examined the variables that influence middle school students' level of life satisfaction and tested a hypothetical structural equation model relating the variables to middle school students' level of life satisfaction. The subjects were 2,829 (1,411 boys and 1,418 girls) pupils who participated in the Korean Survey on the Familial Consciousness of Youth and Parents (KSYC-Familial Consciousness) in 2010. Data were analyzed through frequency, percentages, Pearson's correlations using SPSS 18.0 and structural equation modeling with AMOS 7.0. The findings are as follows. The proposed model, as revised, demonstrated the effectiveness of an analysis of the structural equation model and illustrated that all three variables (fathers' parenting behavior, communication with fathers, self-concept) indicated a direct or indirect influence on middle school students' level of life satisfaction. Fathers' parenting behavior had the greatest total effect on middle school students' life satisfaction. Fathers' parenting behavior, communication with fathers and self-concept explained 59% of the total variance of middle school students' life satisfaction. The implications for future studies are also discussed.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권5호
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• pp.2660-2679
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• 2017

Crypton is a SP-network block cipher that attracts much attention because of its excellent performance on hardware. Based on Crypton, mCrypton is designed as a lightweight block cipher suitable for Internet of Things (IoT) and Radio Frequency Identification (RFID). The security of Crypton and mCrypton under meet-in-the-middle attack is analyzed in this paper. By analyzing the differential properties of cell permutation, several differential characteristics are introduced to construct generalized ${\delta}-sets$. With the usage of a generalized ${\delta}-set$ and differential enumeration technique, a 6-round meet-in-the-middle distinguisher is proposed to give the first meet-in-the-middle attack on 9-round Crypton-192 and some improvements on the cryptanalysis of 10-round Crypton-256 are given. Combined with the properties of nibble permutation and substitution, an improved meet-in-the-middle attack on 8-round mCrypton is proposed and the first complete attack on 9-round mCrypton-96 is proposed.

• 대한지역사회영양학회지
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• 제7권4호
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• pp.559-570
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• 2002

This research was to investigate the operation of contracted food service management and menu preferences of middle school students in Seoul. Questionnaires were distributed between Dec. 1 and 20,2000 in 10 middle schools. Statistical data analyses were completed using the SAS package, including the mean, standard deviation and frequency analysis. The results can be summarized as follows: The average number of meals per middle school was 1,000 and only lunch was served in each school. In terms of facilities and equipment, low rates of the possession of cooking equipment and food carts were the major hindrance to work and production efficiency. The students' main demands were taste, sanitation, variety of food, the introduction of brand foods, the price of foods, and the speed of reaction to their dissatisfaction. Most of the schools provided rice for lunch, while the students preferred noodles, mandu and bread. beef-rib soup was preferred to broth. for side dishes, fish, roasted meat and fried foods were highly favored, along with processed foods, with low preferences for vegetables. The middle school students favored fruits. Lastly, they requested that the quality of school meals be improved through the development and supply of various desserts.

• 가정과삶의질연구
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• 제16권2호
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• pp.83-96
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• 1998

The purpose of this study was to investigate the level of assets and liabilities of farm households and to evaluate the financial status of rural middle-aged and old-aged household using financial ratios. For these purposes an empirical survey data was gathered from rural middle-aged and old-aged households in 8 provinces using structured questionnaires. 877 households data were used in final analysis. The statistical methods used for data analysis are frequency percentile mean The statistical methods used for data analysis are frequency percentile mean median standard deviation $\chi$2 and t-test using SPSS/PC WIN program. Among financial ratios 64.7% of total households could meet the guideline of consumption to income ratio 5.9% of total households could meet the appropriate level of short-term and long-term liquidity. In the case of debt burden ration 82% of total households could meet the guideline. And 28.5% of total households could meet the guideline of capital stock ratio .

• 대한전기학회논문지:전기물성ㆍ응용부문C
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• 제49권10호
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• pp.583-588
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• 2000

This paper presents the design and fabrication of micro electromagnetic vibration silicon elastic body characterized with small size, high efficiency and selective frequency bandwidth for Bio-MENS applications, such as implantable middle ear hearing aid. The presented electromagnetic vibration transducer that composed of wounded coil, permanent magnet and 4-beam cross type elastic body is fabricated by using of micromachining technology. The fabricated transducer has experimental characteristics, that is 5 nm/mA of an energy trasfer rate at the frequency range of 100∼2800 Hz. It has a size of $2{\times}2{\times}2.5\;mm^3$.

• 문화기술의 융합
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• 제5권2호
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• pp.189-194
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• 2019

본 연구는 중 장년을 대상으로 노후준비에 대한 실태조사를 한 연구이다. 중장년을 대상으로 설문조사를 의뢰한 후 회수하는 방법으로 실시하였다. 총 350부를 배포하여 응답이 부실하거나 누락된 문항이 많은 설문지를 제외한 39부를 제외하고 총 311부를 SPSS 21.0을 시용하여 빈도분석, t-test, oneway ANOVA를 실시하였다. 중장년층을 대상으로 지역적인 특색과 노인이 될 계층의 노후생활인지의 차이점을 파악하였으며, 본 연구의 목적은 다음과 같다. 첫째, 중 장년 사회인구학적 특성에 따른 노후생활인지의 차이점 도출, 둘째 중 장년 사회인구학적 경제적 노후생활인지, 신체적 노후생활인지, 사회적 노후생활인지의 차이점을 파악하여 노후준비를 위한 기초자료의 제공이다.

• 대한가정학회지
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• 제24권2호
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• pp.83-91
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• 1986

The purpose of this study was to determine the relationships of children's sex and age to the characteristics of wall motifs. A pilot study was conducted to pool motifs which can be used on the walls of children's rooms. 69 motifs were found and classified into 12 categories. The data consisted of the responses to a structured questionnaire to determine preference and actual use of motifs. The subjects were middle school children from middle income classes living in Seoul, Data were analysed by computer using frequency, percentage, χ\sup 2\, and C\sup 2\. Children's sex and age differences were somewhat distinctively found in preferred motifs.

• 센서학회지
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• 제19권5호
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• pp.361-368
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• 2010

ACROSS device, which is composed of an implantable microphone, a signal processor, and a vibrating transducer, is a fullyimplantable middle ear hearing device(F-IMEHD) for the recovery of patients with hearing loss. And since a microphone is implanted under skin and tissue at the temporal bones, the amplitude of the sound wave is attenuated by absorption and scattering. And the vibrating transducer attached to the ossicular chain caused also the different displacement from characteristic of the stapes. For the gain control of auditory signals, most of implantable hearing devices with the digital audio signal processor still apply to fitting rules of conventional hearing aid without regard to the effect of the implanted microphone and the vibrating transducer. So it should be taken into account the effect of the implantable microphone and the vibrating transducer to use the conventional audio fitting rule. The aim of this study was to measure gain characteristics caused by the implanted microphone and the vibrating transducer attached to the ossicle chains for the gain compensation of ACROSS device. Differential floating mass transducers (DFMT) of ACROSS device were clipped on four cadaver temporal bones. And after placing the DFMT on them, displacements of the ossicle chain with the DFMT operated by 1 $mA_{peak}$ current was measured using laser Doppler vibrometer. And the sensitivity of microphones under the sampled pig skin and the skin of 3 rat back were measured by stimulus of pure tones in frequency from 0.1 to 8.9 kHz. And we confirmed that the microphone implanted under skin showed poorer frequency response in the acoustic high-frequency band than it in the low- to mid- frequency band, and the resonant frequency of the stapes vibration was changed by attaching the DFMT on the incus, the displacement of the DFMT driven with 1 $mA_{rms}$ was higher by the amount of about 20 dB than that of cadaver's stapes driven by the sound presssure of 94 dB SPL in resonance frequency range.

• 한국영양학회:학술대회논문집
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• 한국영양학회 2002년도 추계학술대회 및 총회
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• pp.170-170
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• 2002