• 센서학회지
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• 제28권5호
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• pp.329-333
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• 2019

Solution-processed oxide thin-film transistors (TFTs) have garnered great attention, owing to their many advantages, such as low-cost, large area available for fabrication, mechanical flexibility, and optical transparency. Negative bias stress (NBS)-induced instability of sol-gel IGZO TFTs is one of the biggest concerns arising in practical applications. Thus, understanding the bias stress effect on the electrical properties of sol-gel IGZO TFTs and proposing an effective recovery method for negative bias stressed TFTs is required. In this study, we investigated the variation of transfer characteristics and the corresponding electrical parameters of sol-gel IGZO TFTs caused by NBS and positive bias recovery (PBR). Furthermore, we proposed an effective PBR method for the recovery of negative bias stressed sol-gel IGZO TFTs. The threshold voltage and field-effect mobility were affected by NBS and PBR, while current on/off ratio and sub-threshold swing were not significantly affected. The transfer characteristic of negative bias stressed IGZO TFTs increased in the positive direction after applying PBR with a negative drain voltage, compared to PBR with a positive drain voltage or a drain voltage of 0 V. These results are expected to contribute to the reduction of recovery time of negative bias stressed sol-gel IGZO TFTs.

• 국제지역연구
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• 제20권3호
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• pp.123-144
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• 2016

This paper investigates the linkages between returns both in foreign exchange and stock markets, and uncertainties in two markets using daily data for the period of 16 July 2004 to 30 June 2014 in Nepalese economy. Four hypotheses are tested about how uncertainty influences the stock index and exchange rates. From the empirical results, a bivariate EGARCH-M model is the best to explain the volatility in the two markets. There is a negative relationship from the exchange rates return to stock price return. Empirical results do provide strong empirical confirmation that negative effect of stock index uncertainty and positive effect of exchange rates uncertainty on average stock index. GARCH-in-mean variables in AR modeling are significant and shows that there is positive effect of exchange rates uncertainty and negative effect of stock index uncertainty on average exchange rates. Stock index shocks have longer lived effects on uncertainty in the stock market than exchange rates shock have on uncertainly in the foreign exchange market. The effect of the last period's shock, volatility is more sensitive to its own lagged values.

• KDI Journal of Economic Policy
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• 제37권1호
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• pp.19-44
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• 2015

This paper examines the effect of the global financial crisis on corporate investment in Korea. Specifically, the crisis was considered to have possibly constrained firm-level investment as the negative shock to the credit supply dramatically unfolded. As Duchin et al. (2010) demonstrated, if a negative supply-side shock is evident during a crisis period, larger cash holdings before the crisis will lead to fewer constraints to corporate investment, or vice versa. In order to investigate the supply-side effect of the crisis, we use firm-level financial data, including firms listed on the Korean stock market as well as small and medium-sized enterprises. We find that corporate investment declined significantly after the crisis, even if we control for factors associated with the demand side, such as contemporaneous capital productivity and cash flow. More importantly, the decline is positively and significantly related to cash holdings before the crisis, implying the negative effect of a credit supply shock. Small and medium enterprises experienced relatively sharp investment declines compared to those of larger firms, and the relationship between pre-crisis cash amounts and the degree of investment decline is greater than that in large firms. Additionally, we examine whether the negative effect persists up to the present, finding evidence that the cash-investment relationship continues in small and medium-sized enterprises.

• 초등상담연구
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• 제5권1호
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• pp.205-226
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• 2006

The purpose of this study was to find out the relations between 6th graders' negative cognitive process and anger experience and aggressiveness. To achieve the goal, it conducted a test to examine children's negative cognitive process, anger experience, aggressiveness targeting 100 children of 6th grade in C elementary school, Gyeonggj province. Then it conducted SPSS 12.0 statistical program to get the results of correlation analysis and regression analysis. The outcomes were as follows. First, there was a meaningfully positive relation between a negative cognitive process and anger experience. In other words, children having more negative cognitive process seemed to experience the feelings of anger more often, this presented the important role of cognition while getting into a temper Second, it reported a positive relation between anger experience and aggressiveness. Children who have experienced anger more often showed more violent behaviors, especially there were more significant positive relations between trait-anger and aggressiveness compared to state-anger and aggressiveness. This could explain some possibilities that children with high level of trait-anger might outrage more often than others by recognizing the situations as anger stimulants. Third, when conducting a regression analysis, a negative cognitive process made an effect on anger experience which affected aggressiveness. However, it did not show a negative cognitive process making a direct effect on aggressiveness. This is considered that children could experience an anger while evaluating an event or object in a negative way based on individual belief, and emotional linguistic behavioral aggressiveness would be formalized as they express the sparked fury either internally or externally. In conclusion, this study proved that there were close relations between children's negative cognitive process and anger experience and aggressiveness. A negative cognitive process affects anger experience, and anger experience affects aggressiveness afterwards. A negative cognitive process affects aggressiveness through anger experience indirectly, and especially trait-anger among anger experience is the main factor to influence on aggressiveness. With consideration of these results, it is believed that mediation is important key to moderate the negative cognition and trait-anger in order to diminish children's aggressive behaviors. This study has a meaning to provide searching for manifold mediating methods between negative cognition and trait anger, with a fundamental resource.

• 대한인간공학회지
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• 제11권1호
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• pp.21-29
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• 1992

A study on analyze the effect of positive and negative contrast for user performance on the VDT tasks);text typing, text deiting, and searching task) has been performed. The performances were measured in terms of the completion time and the number of errors. The results of each VDT task are followings. In the text typing task and the searching task, the performances measured by the number of errors were better at the condition of negative contrast than at that of positive contrast. In the text deiting task, the performance showed a reverse tendency.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 1999년도 학술대회논문집-국제 전기방전 및 플라즈마 심포지엄 Proceedings of 1999 KIIEE Annual Conference-International Symposium of Electrical Discharge and Plasma
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• pp.40-45
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• 1999

The effect of the addition of helium, neon, argon and xenon on the production of negative hydrogen ions has been studied in a magnetically confined dc filament discharge. The addition of helium and neon produced effects similar to an equivalent increase in hydrogen pressure. However, the addition of argon and low fractions of xenon produced significant increases in the negative ion density for hydrogen at pressures around 1 mTorr. The addition of argon and xenon, by increasing electron density and decreasing electron temperature, achieved conditions closer to optimum for negative ion production. The largest enhancement of negative hydrogen ion density occurred with the addition of argon; it is suggested that this is due to a resonant energy exchange between excited argon atoms and hydrogen molecules.

• 한국보육지원학회지
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• 제10권3호
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• pp.85-102
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• 2014

본 연구의 목적은 부정적 정서가 드러나는 걸음마기 영아를 대상으로 부정적 정서성과 부정적 정서에 대한 어머니의 반응이 영아의 사회정서 행동과 어떠한 관계가 있는지 살펴보는데 있다. 연구대상은 18-36개월 걸음마기 영아와 어머니 141명이었으며 상관관계, 위계적 회귀분석, 매개효과 분석을 실시하였다. 연구결과 영아의 부정적 정서성과 부정적 정서에 대한 어머니의 반응, 영아의 사회정서 행동은 서로 유의미하게 관련되어 있었다. 또 영아의 정서성과 어머니의 반응이 영아의 사회정서 행동에 영향을 주는 것으로 나타났으며, 같은 정도의 부정적 정서를 가진 영아라도 환경적 특성인 어머니의 반응에 따라 사회정서 행동의 정도가 다르게 나타났다. 마지막으로 영아의 부정적 정서에 대한 어머니의 반응은 영아의 정서성과 사회정서 행동 관계를 매개하는 것으로 나타났다. 이러한 결과는 영아의 사회정서 행동은 영아가 생득적으로 갖고 태어나는 기질적 특성 뿐아니라 어머니의 변인에 의해 조절이 가능하며, 어머니의 반응이 영아의 부정적 정서성을 완화시켜줄 수 있는 완충적 역할을 할 수 있음을 의미한다.

• 한국컴퓨터정보학회논문지
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• 제25권7호
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• pp.193-202
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• 2020

본 연구는 경호경비원의 조직문화에 따른 직무스트레스와 직무소진이 직무성과에 미치는 영향을 규명하기 위하여 경호경비원 320명을 대상으로 설문조사를 실시하였다. 이 연구를 통하여 얻은 결론은 다음과 같다. 첫째, 조직문화에서 혁신문화는 직무스트레스에 통계적으로 .01수준에서 부적(-)인 영향을 미친다. 둘째, 조직문화는 직무성과에 직접적인 영향을 미치지 않는다. 셋째, 조직문화 가운데 시장문화는 직무성과에 통계적으로 .01수준에서 부적(-)으로 영향을 미친다. 넷째, 직무스트레스는 직무성과에 통계적으로 .001수준에서 부적(-)으로 영향을 미친다. 다섯째, 직무소진은 직무성과에 통계적으로 .001수준에서 부적(-)으로 영향을 미친다. 여섯째, 직무스트레스는 조직문화의 혁신문화와 직무성과의 관계에서 통계적으로 .01수준에서 부적(-) 매개효과가 있다. 일곱째, 직무소진은 조직문화와 직무성과의 관계에서 통계적으로 유의한 영향이 없다.

• 융합정보논문지
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• 제7권4호
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• pp.139-149
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• 2017

본 연구의 목적은 융복합시대에서 청소년들이 지각하는 부모의 긍정적양육태도와 부정적양육태도가 청소년의 스마트폰 의존도에 미치는 영향과 그 과정에 있어서 또래애착의 매개효과를 검증하는데 있다. 이를 위해 한국아동 청소년패널 초4 패널 6차년도 데이터를 이용하였으며 본 연구에 적합한 1,823명의 청소년을 대상으로 부모의 양육태도, 또래애착 및 청소년의 스마트폰 의존도에 대한 경로분석 모형을 살펴보았다. 주요 분석결과는 다음과 같다. 첫째, 부모의 긍정적 부정적양육태도가 청소년의 또래애착에 영향을 미치는 것으로 확인되었다. 둘째, 부모의 긍정적 부정적양육태도가 청소년의 스마트폰 의존도에 영향을 미치는 것으로 확인되었다. 셋째, 부모의 긍정적 부정적 양육태도가 청소년의 스마트폰 의존도에 미치는 직접적인 영향과 또래애착을 매개로 하는 간접적인 영향이 확인되었다.

• 한국의류학회지
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• 제26권5호
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• pp.663-674
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• 2002

The objectives of this study were 1) to ascertain whether there was a difference in product performance (expressive or instrumental), which consumer recognized after using, related to consumer involvement toward clothing, 2) to clarify the effect of product performance on consumption emotion(positive or negative), 3) to investigate the effect of consumption emotion on satisfaction, and 4) to find out whether product performance had a direct effect on satisfaction toward product. The study was conducted in three steps. Through the two steps, measurement instruments were developed. At the last step, judgement sampling method were utilized to collect the data and subjects were 614 university students. Confirmatory factor analysis and structural equation model analysis were used to analyze the data. The results were as follows: 1) Consumer involvement had an effect on product performances but it was related to the expressive product performance more than to the instrumental product performance. 2) Product performance had positive influence on positive consumption emotion, while it had negative influence on negative consumption emotion. The results revealed that there were significant relationships between product performance and consumption emotion. 3) Positive consumption emotion had a positive effect on consumer satisfaction, on the other hand negative consumption emotion had a negative effect on consumer satisfaction. 4) Although the direct effects of product performances on satisfaction were larger than the indirect effects, product performance was greatly influential in consumption emotion and consumption emotion was strongly related to consumer satisfaction. Therefore, consumption emotion is an important determinant variable in the process of consumer satisfaction.