• Asia Marketing Journal
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• 제15권3호
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• pp.53-77
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• 2013

As advertising and promotions are categorized as operating expenses, managers tend to reduce marketing budget to improve their short term profitability. Gauging the value and accountability of marketing spending is therefore considered as a major research priority in marketing. To respond this call, recent studies have documented that financial market reacts positively to a firm's marketing activity or marketing related outcomes such as brand equity and customer satisfaction. However, prior studies focus on the relation of marketing variable and financial market variables. This study suggests a channel about how marketing activity increases firm valuation. Specifically, we propose that a firm's marketing activity increases the level of the firm's product market information and thereby the dispersion in financial analysts' earnings forecasts decreases. With less uncertainty about the firm's future prospect, the firm's managers and shareholders have less information asymmetry, which reduces the firm's cost of capital and thereby increases the valuation of the firm. To our knowledge, this is the first paper to examine how informational benefits can mediate the effect of marketing activity on firm value. To test whether marketing activity contributes to increase in firm value by mitigating information asymmetry, this study employs a longitudinal data which contains 12,824 firm-year observations with 2,337 distinct firms from 1981 to 2006. Firm value is measured by Tobin's Q and one-year-ahead buy-and-hold abnormal return (BHAR). Following prior literature, dispersion in analysts' earnings forecasts is used as a proxy for the information gap between management and shareholders. For model specification, to identify mediating effect, the three-step regression approach is adopted. All models are estimated using Markov chain Monte Carlo (MCMC) methods to test the statistical significance of the mediating effect. The analysis shows that marketing intensity has a significant negative relationship with dispersion in analysts' earnings forecasts. After including the mediator variable about analyst dispersion, the effect of marketing intensity on firm value drops from 1.199 (p < .01) to 1.130 (p < .01) in Tobin's Q model and the same effect drops from .192 (p < .01) to .188 (p < .01) in BHAR model. The results suggest that analysts' forecast dispersion partially accounts for the positive effect of marketing on firm valuation. Additionally, the same analysis was conducted with an alternative dependent variable (forecast accuracy) and a marketing metric (advertising intensity). The analysis supports the robustness of the main results. In sum, the results provide empirical evidence that marketing activity can increase shareholder value by mitigating problem of information asymmetry in the capital market. The findings have important implications for managers. First, managers should be cognizant of the role of marketing activity in providing information to the financial market as well as to the consumer market. Thus, managers should take into account investors' reaction when they design marketing communication messages for reducing the cost of capital. Second, this study shows a channel on how marketing creates shareholder value and highlights the accountability of marketing. In addition to the direct impact of marketing on firm value, an indirect channel by reducing information asymmetry should be considered. Potentially, marketing managers can justify their spending from the perspective of increasing long-term shareholder value.

• 한국철도학회논문집
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• 제17권3호
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• pp.193-200
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• 2014

본 연구에서는 도시철도 콘크리트궤도 장대레일에 대한 실내피로시험을 수행하였고, 장대레일 잔존수명을 표현한 파괴확률 50% S-N 선도는 적은 실험데이터에 대한 가중치 확률 해석기법을 사용하여 도출하였다. 여기서 피로시험에 사용된 레일들이 누적통과톤수가 서로 다르기 때문에 누적통과톤수를 평균하여 반복횟수를 수정하였다. 또한, 레일표면요철 및 열차속도를 고려한 레일 저부 휨응력은 기존 연구결과 도출된 레일휨응력 예측식을 사용하여 콘크리트궤도 장대레일의 잔존수명을 평가하였다. 레일 피로수명 평가결과, 레일 피로수명이 기준치에 비해 약 2억톤이상 높았다. 또한, 자갈궤도에 비해 콘크리트궤도 레일의 피로수명이 약 3억톤이상 높은 것으로 분석되었다. 따라서 도시철도에서 레일교체기준을 자갈궤도와 콘크리트궤도로 구분할 필요가 있으며, 레일연마를 통한 레일관리가 이루어진다면 기준치가 아닌 목표치로 관리할 수 있을 것으로 판단되었다.

• 경영과정보연구
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• 제17권
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• pp.107-133
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• 2005

The purpose of this study was to analyze a trend of profitability classified by characteristics of hospitals and to analyze related factors. The data for this study were derived from survey material conducted by the Korean Hospital Association on 33 hospitals in Korea between 1993 and 2002. Profitability was measured in the aspect of investment profit rate and operation profit rate with net profit to total assets, normal profit to total assets and operating margin to gross revenue as dependent variables. Independent variables were classified by general factors (ownership, number of beds, period of establishment, region), financial factors (total asset turnover, liabilities to total assets, current ratio, fixed ratio, inventories turnover, personnel costs per operation profit, material costs per operation profits), composition of manpower and facilities(personnel and area per beds), productivity index(the number of daily patients per medical doctor, the number of daily patients per nurse), the score of quality assurance activities. First, Concerning the specialists per beds or area per beds and profitability of hospitals there was not statistically significant. Second, Those hospitals having the most daily patients per nurse had significantly higher profitability than the others, but the number of daily patients per medical doctor had little effect on the profitability. Thirds, Those hospitals having a higher proportion total asset turnover tended to show significantly higher profitability compared to other hospitals, but the liabilities to total assets and liquidity ratio had a little difference to the profitability. Those hospitals having a higher proportion personnel costs per operation profit and material costs per operation profits tended to show significantly lower hospital profitability compared to other hospitals. Fourth, In regression analysis, hospital profitability had negative relationship with personnel costs per operation profit or material costs per operation profits. While it had positive relationship with total asset turnover, the number of daily patients per nurse. In conclusion, private hospitals had higher profitability than that of public hospitals. Though factors related to profitability of hospital were different according to ownership, it is important for securing appropriate profitability by operating appropriate number of nurse, raising total asset turnover, and reducing personnel costs, material costs per operation profits. This study can be used as a baseline data for planning of hospital management. But the study may be limited in that the results cannot be generalized due to its small sample size. However, this longitudinal observation of 33 hospitals over ten year period has significant merit alone.

• 영재교육연구
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• 제21권3호
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• pp.611-630
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• 2011

본 연구는 영재들의 학업성취에 영향을 주는 심리적 요인인 자기결정성, 학습목표지향성, 자기효능감, 지능관 및 자기조절학습전략의 영향력을 조사하는데 목적이 있다. 또한 영재들 중 학업성취가 높은 학생과 낮은 학생들의 심리적 특성에 차이가 있는지도 살펴보았다. 한국교육종단연구 자료 중 중학교 2학년 영재학생 128명의 자료가 최종 분석되었다. 분석 결과 외적 조절동기는 학업성취에 부적영향을 주는 것으로 나타났고 확인된 조절동기, 숙달접근, 자기효능감, 정교화, 초인지 전략은 정적영향을 주는 것으로 나타났다. 단계적 중다 회귀분석을 통해 학업성취에 영향을 준 6개 하위요인들의 상대적 영향력을 비교하였는데 분석결과 영재들의 학업성취는 정교화에 의해 15.5% 가량이 설명되었고 확인된 조절동기에 의해 추가로 5% 정도 더 설명되었다. 독립표본 t 검정 분석결과 학업성취가 낮은 영재학생들은 자기결정성, 숙달접근성, 자기효능감, 정교화, 초인지, 공간관리, 교사도움에서 낮은 수준을 보였다. 따라서 성적이 낮은 중학교 영재들의 학업문제를 해결하기 위해서는 우선적으로 정교화 인지전략을 발달시킬 필요가 있다.

• 한국환경보건학회지
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• 제37권6호
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• pp.440-449
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• 2011

Objectives: This study was designed to determine the levels of polybrominated diphenyl ethers (PBDEs) in breast milk and to evaluate the relations with factors affecting these levels. Methods: The congener levels of PBDE in 22 samples of breast milk were analyzed using a high resolution gas chromatograph with a high resolution mass detector. In accordance with our standard operating procedures, the recoveries of internal standards had to range between 68% and 118%. Since the distribution of PBDE concentrations is close to log-normal, the data were logarithmically transformed before analysis. Test subjects were healthy primipara and multipara mothers with a mean age of 32 (SD = 2.7) in 2006. Results: Seven PBDE congeners (BDE-28, 47, 99, 100, 153, 154, and 183) were detected and identified in all of the pooled breast milk samples, indicating widespread contamination from PBDEs in the environment in Korea. Residue levels of total PBDEs (sum PBDEs from tri- to hepta-BDE) ranged from 0.84-13.1 ng/g lipid with median and geometric mean levels of 2.6 ng/g lipid and 2.74 ng/g lipid, respectively. PBDE congeners 47, 99 and 153 markedly predominated and accounted for about 75% of the amount of the PBDE congeners analyzed. BDE-47 was the dominant congener in most samples, whereas BDE-153 was predominant in a few (n = 7/22). BDE-47 was highly correlated with total PBDEs (r = 0.987, p < 0.01). In analyses of the differences of the means of log transformed breast milk PBDE levels for groups of potential covariates, only breast milk BDE-47 and BDE-99 levels were significantly associated with fish (p < 0.05) and meat consumption (p < 0.01). However, we did not find significant correlations between PBDE levels and maternal age, body mass index (BMI), parity, job presence and smoking status. Conclusions: Our findings are mainly limited due to the small sampling size and low doses of PBDEs exposure. Background and human exposure data of PBDEs is lacking, and longitudinal investigations into the environment and biota are encouraged to determine the health impact on future populations in Korea.

• 한국산학기술학회논문지
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• 제21권2호
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• pp.460-469
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• 2020

본 연구는 지역사회 거주하는 65세 이상 노인의 건강증진행위에 영향을 미치는 요인을 확인하기 위해 시도되었으며, Pender의 건강증진모형에 근거한 가설적 모형을 검증하기 위해 Theoretical substruction을 구성하였다. 연구대상자는 G시에 거주하는 65세 이상 노인 199명을 대상으로, 구조화된 설문지를 통해 개인적 특성, 건강정보이해능력, 자기효능감 및 건강증진행위를 조사하였다. 자료 분석은 SPSS 20.0프로그램을 이용하여 t-test, ANOVA, 사후검증으로 Scheffé test를 실시하였고, 건강정보이해능력, 자기효능감 및 건강증진행위 간의 관계를 확인하기 위해 Pearson's correlation coefficients로 분석하였으며, 건강증진행위에 영향을 미치는 요인을 확인하기 위해 위계적 회귀분석을 실시하였다. 연구 결과, 노인의 건강증진행위는 4점 기준으로 평균 2.56±0.50점이었으며, 하위영역 중 대인관계 영역이 가장 높았고, 신체활동 영역이 가장 낮았다. 건강증진행위에 영향을 미치는 요인은 건강정보수집 경로의 수(β=.16, p=.031)와 자기효능감(β=.53, p<.001)인 것으로 확인되었으며, 건강증진행위를 30.8% 설명하였다(F=14.19, p<.001). 본 연구 결과를 통해 노인 대상자의 건강증진행위를 높이기 위해서는 개인의 자기효능감 수준과 건강정보의 특성을 고려한 중재가 필요함을 확인하였다. 추후 노인의 건강증진행위 수준과 다양한 영향 요인을 확인하기 위한 지속적인 연구가 필요할 것으로 생각된다.

• 여성건강간호학회지
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• 제1권1호
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• pp.5-27
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• 1995

One of the important tasks for new parents, especially mothers, is to establish warm, mutually affirming interpersonal relationships with the new baby in the family, with the purpose of promoting the health development of the child and the well-being of the whole family. Nurses assess the quality of the behavioral characteristics of the maternal-infant interaction. The purpose of this longitudinal descriptive correlational study is to investigate the changes of the mother - infant interactions from postpartum 1 day to postpartum 8weeks of the transition to parenthood. The aim was to contribute to the development of theoretical under standing on which to base care toward promoting the quality of maternal - infant interaction. Data were collect ed directly by the investigator and at rained from Jul, 1, 1990 to Jun 8, 1991, Subjects were a random sample of 44 mothers, 44 who had a normal delivery (but with out other perinatal complications) at four general hospitals in Seoul. Instruments used were the Stainton Parent-infant Interaction Scale (1981). The first observations were made in the delivery room, followed by day 1, day 2, day 3 and 2 weeks, 4 weeks, 6 weeks and 8 weeks after, birth, for a total of 8 contacts. Observations in the hospital were made during the hour prior to scheduled feedings. The infant was placed beside the mother. Later contacts were made at home. Data analysis was don by computer using as SPSS program and included, Paired t-test, t-test and Pearson Correlation coefficient ; the results were as follows. 1. The daily maternal-infant interaction score for the initial contact ofter birth to 8 weeks postpartum had the lowest average score 5.21 and the highest 8.02(in a range of 0-10). This subject group of mothers needed Extra nursing supporting to promote their maternal-infant interaction. 2. The daily scores for the maternal-infant interaction tended to rise, showing a gradual improvement over the period of eight weeks. However, there were significantly different increases in maternal-infant interaction only from the first to second day (p=0.000) and from the fourth to sixth weeks ofter birth.(p=0.000) 3. When the seven items of maternal-infant interaction were evaluated items of maternal-infant inter action were evaluated separately, "Care taking for the baby" had the highest average score, 1.60(in a range of 0-2) and "Speaks to baby" the lowest, 0.8. All items, suggested the subjects' need of nursing intervention to promote maternal-infant interaction 4. There were positive correlations between certain general characteristics, namely, both a higher economic status (p=0.027) and breast feeding (p=0.021) and maternal-infant interaction.

• 한국산학기술학회논문지
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• 제19권6호
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• pp.209-218
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• 2018

본 연구는 노인의 주관적 계층의식과 삶의 만족과의 관계를 알아보고, 이 관계에서 우울이 어떠한 영향을 주고 있는지 살펴보는 것을 목적으로 한다. 이는 노인의 삶의 만족도의 영향요인을 기존의 개인적 차원 요인 뿐 아니라 사회 내에서 개인의 상대적 위치인 주관적 계층의식에 대해 논의해 봄으로써 노인 삶의 만족도에 대한 새로운 관점을 제시하는 의의가 있다고 하겠다. 이를 위하여 노인의 주관적 계층의식, 삶의 만족도, 우울의 정도를 파악하고, 주관적 계층의식과 삶의 만족도의 관계에서 우울의 매개효과를 검증하였다. 본 연구는 2014년 한국고용정보원의 '고령화 연구패널 5차자료'를 활용하여 65세 이상 노인 4,222명을 대상으로 구조방정식 모형 분석을 실시하였다. 분석결과는 다음과 같다. 첫째, 노인의 주관적 계층의식은 삶의 만족도에 영향을 미치는 것으로 확인되었다. 또한 노인의 주관적 계층의식이 우울에도 영향을 미치는 것으로 확인되었으며, 노인 우울 역시 삶의 만족도에 영향을 미치는 것으로 확인되었다. 즉, 노인의 주관적 계층의식이 높을수록 우울 수준은 낮고 삶의 만족도는 높은 관계가 나타났다. 둘째, 노인의 주관적 계층의식과 삶의 만족도의 관계에서 우울의 매개효과를 검증한 결과, 우울은 노인의 주관적 계층의식이 삶의 만족도에 미치는 영향을 매개하는 효과가 있는 것으로 나타났다. 이러한 연구결과를 근거로 노인의 주관적 계층의식을 높이고 우울 수준을 낮추거나 예방하여 삶의 만족도를 높일 수 있는 정책적, 실천적 함의를 제시하였다. 첫째, 노인의 주관적 계층의식을 높이기 위한 정책적 방안으로 주거 지원 정책과 여가활용지원을 통한 사회적 자본을 활용하고 강화할 수 있어야 한다. 둘째, 우울을 감소시키기 위하여 지역사회 기반의 네트워크 구축을 통한 노인 정신건강서비스 제공 등을 제안하였다.

• 한국자원식물학회지
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• 제33권6호
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• pp.624-637
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• 2020

High-quality and high-phytonutrient watermelon fruits have strong market opportunities besides their health related benefits. Hence, investigating quality and nutritional related traits of watermelon genetic resources could provide important baseline data in breeding for increased lycopene content thereby increasing the marketability of watermelon. To this end, we have examined some fruit morphological traits and lycopene content of 105 genetic resources. Seeds, originally obtained from 22+ countries, were obtained from the National Agrobiodiversity Center, Jeonju, South Korea, grown in an experimental field and harvested at a fully mature stage. The size of pistil scar (SPS), the width of stripes (WS), weight of fruit (WF), length of fruit (LF), width of fruit (WIF), the thickness of pericarp (TP), soluble solids content (SSC), fruit shape in longitudinal section, ground color of skin, the intensity of the green color of skin, fruit shape at the apical part, grooving distribution, conspicuousness of stripes, and main color of the flesh were recorded on the field and inside laboratory and the lycopene was measured using spectrophotometric and HPLC methods. Watermelon fruits have shown a diverse morphological characters. Red and pink fleshed fruits dominated in the entire collections. Fruits with higher thickness of rind were found to exhibit less soluble solid content (SSC). Korean origin fruits were characterized by intermediate SSC while the United States of America (USA), Russia (RUS), Tajikistan (TJK), Turkmenistan (TKM), Taiwan (TWN), and Uruguay (URY) originated fruits had the highest SSC. The lycopene content varied between 41.37 and 182.82 ㎍/g, 2.81 and 163.72 ㎍/g, and 3.54 and 255.47 ㎍/g using HPLC, UV-Vis spectrophotometer, and microplate reader spectrophotometer, respectively. Red- and pink-fleshed fruits had the highest levels of lycopene content compared to the yellow- and orange-fleshed. Lycopene content had a significant positive correlation with SSC, however, no correlations were detected between lycopene and other quantitative fruit morphological characters. Our study demonstrated high diversity exists in fruit morphological traits and lycopene content of the germplasm collections which provide beneficial baseline data for a future breeding program and utilization of watermelon germplasm collections in gene banks for the maintenance and improvement of the current levels of production, marketability, and health-related benefit of watermelon fruits.

• 대한토목학회논문집
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• 제33권2호
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• pp.821-831
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• 2013

최근 연구결과 레일연마 및 장대레일화를 통해 누적통과톤수에 의한 레일교체기준의 연장이 가능한 것으로 보고되었다. 본 연구에서는 장기 사용레일에 대한 실내피로시험을 수행하였고, 파괴확률 50%에서의 장기 사용레일의 잔존수명을 표현한 S-N 선도는 적은 실험데이터에 대한 가중치 확률 해석기법을 사용하여 도출하였다. 여기서 피로시험에 사용된 레일들이 누적통과톤수가 서로 다르기 때문에 누적통과톤수를 평균하여 반복횟수를 수정하였다. 또한, 레일표면요철 및 열차속도를 고려한 레일 저부 휨응력은 기존 연구결과 도출된 레일휨응력 예측식을 사용하여 장기 사용레일의 잔존수명을 평가하였다. 따라서 본 연구를 통해 도시철도에서 레일연마를 통한 레일관리가 이루어진다면 누적통과톤수에 의한 레일교체기준(약 8억톤)보다 약 2억톤이상 연장 사용이 가능하며, 피로한도 이하의 응력범위에 대한 피로시험결과를 바탕으로 레일의 피로수명을 평가하기 위해서는 수정마이너법칙보다는 피로한도 이상에서의 S-N선도 기울기의 1/2인 하이바크법칙을 적용하는 것이 합리적이라 판단되었다.