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진취성, 지각된 유용성 및 학습지향성이 업무몰입에 미치는 영향
이상길 한국벤처창업학회 2018 벤처창업연구 Vol.13 No.6
본 연구는 직장인을 대상으로 분석한 이상길과 하규수(2017)의 연구를 토대로 직장인과 자영업인의 진취성, 지각된 유용성, 학습지향성이 업무몰입에 미치는 영향에 관해 실증적으로 분석하였다. 업무몰입은 조직행동분야에서 지속적으로 연구되어지고 있으며, 업무몰입이 조직 구성원의 창의성과 생산성 향상에 직접적인 영향을 미친다는 연구결과가 제시되었고, 일에 대한 몰입적 태도는 개인의 경쟁력 향상은 물론, 조직성과 향상에 영향을 준다는 점에서 그 중요성은 더욱 증가하고 있다. 본 연구를 위해서 회사원, 전문직 및 자영업인을 대상으로 한 온라인 설문조사를 진행하였고, 최종적으로 178개의 유효한 설문지를 확보하였다. 분석결과, 진취성과 학습지향성이 업무몰입에 긍정적인 영향을 주는 것으로 확인되었다. Work commitment is being studied continuously in the field of organizational behavior, this study suggests that work commitment directly affects the creativity and productivity of organizational members. The immersive attitude toward work is increasing in importance as it not only improves individual competitiveness but also improves organizational performance. From an academic point of view, we can emphasize the differentiation of this study in terms of analyzing work commitment, which is a leading factor in the current work performance, based on individual proactiveness, perceived usefulness, and learning orientation. Identifying the factors influencing work commitment is likely to provide meaningful implications for securing current and future competitiveness. For this study, we conducted an online survey of office workers, professionals, and self-employed workers. Finally, we obtained 178 valid questionnaires. As a result of the analysis, it was confirmed that proactiveness and learning orientation had a positive effect on work commitment.
이상길,Meng Yang,Ying Wang,Terrence Vance,Beate Lloyd,Sang-Jin Chung,Sung I. Koo,Ock K. Chun 한국식품영양과학회 2014 Journal of medicinal food Vol.17 No.10
Orange juice (OJ) fortified with calcium (Ca) and vitamin D has turned OJ into a readily available source of these nutrients for children and adults. However, the impact of OJ consumption on Ca and vitamin D adequacy and bone health has not been documented. The aim of this study was the evaluation of the contribution of 100% OJ consumption to dietary and serum Ca and vitamin D status, and bone health parameters in the U.S. population aged 4 years and older (n = 13,971) using the National Health and Nutrition Examination Survey (NHANES) 2003–2004 and 2005–2006. Food consumption data were coded to produce micronutrient intake values using the USDA Food and Nutrient Database for Dietary Studies 3.0. Serum concentrations of bone-related micronutrients and biomarkers, bone mineral density (BMD), and bone mineral content (BMC) were measured. Analysis of data was conducted using SAS software 9.2 and SUDAAN. OJ consumers showed higher intakes of bone-related micronutrients, compared with nonconsumers (P < .05). In addition, OJ consumers had higher serum Ca levels in adults (P < .01) and had a lower odds ratio for serum 25-hydroxyvitamin D3 < 20 ng/mL in children (P < .05). OJ consumption was positively associated with femur BMD in children (P < .05) and with femur BMC in both children and adults (P < .05). In conclusion, OJ may be recommended as an effective dietary means of improving the status of Ca and vitamin D, acid-base balance, and of promoting bone health in children and adults.
이상길,김보경,성도유,Terrence Vance,Jong Suk Lee,이지영,Sung I. Koo,김대옥,Hicham Drissi,Ock K. Chun 한국식품영양과학회 2015 Journal of medicinal food Vol.18 No.4
Berry consumption can prevent bone loss. However, the effects of different berries with distinct anthocyanin composition have not been thoroughly examined. The present study compared the effects of blueberry, blackberry, and black currant on bone health using a mouse model of diet-induced obesity. To investigate the effect of different berry supplements against a high-fat (HF) diet in vivo, 40 HF diet-induced obese (DIO) C57BL mice were assigned into four groups and fed a HF diet (35% w/w) with or without berry supplementation for 12 weeks (n = 10). We measured adipose tissue mass (epididymal and retroperitoneal), plasma antioxidant, bone-related biomarkers, femur bone mineral density (BMD), and bone mineral content (proximal and distal). Adipose masses were negatively correlated with proximal BMD, but positively associated with plasma superoxide dismutase (SOD) concentrations (P < .001). Berry supplementation did not change the plasma ferric reducing antioxidant power, SOD, and insulin-like growth factor-1. However, the black currant group exhibited greater plasma alkaline phosphatase compared with the control group (P < .05). BMD in the distal epiphysis was significantly different between the blueberry and blackberry group (P < .05). However, berry supplementation did not affect bone mass compared with control. The present study demonstrates a negative relationship between fat mass and bone mass. In addition, our findings suggest that the anthocyanin composition of berries will affect bone turnover, warranting further research to investigate the underlying mechanisms.