선형 동적 시스템 기반의 감정 엔진 모델

안호석(Ho Seok Ahn),최진영(Jin Young Choi) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.4

This paper introduces an emotional behavior decision model for intelligent service robots. An emotional model should make different behavior decisions according to the purpose of the robots. We propose an emotional behavior decision model which can change the character of emotional model and make different behavior decisions although the situation and environment remain the same. We defined each emotional element such as reactive dynamics, internal dynamics, emotional dynamics, and behavior dynamics by state dynamic equations. The proposed system model is a linear system. If you want to add one external stimulus or behavior, you need to add just one dimensional vector to the matrix of external stimulus or behavior dynamics. The case of removing is same. The change of reactive dynamics, internal dynamics, emotional dynamics, and behavior dynamics also follows the same procedure. We implemented the proposed emotional behavior decision model and verified its performance.

Rheology of concentrated xanthan gum solutions: Oscillatory shear flow behavior

Song Ki-Won,Kuk Hoa-Youn,Chang Gap-Shik The Korean Society of Rheology 2006 Korea-Australia rheology journal Vol.18 No.2

Using a strain-controlled rheometer, the dynamic viscoelastic properties of aqueous xanthan gum solutions with different concentrations were measured over a wide range of strain amplitudes and then the linear viscoelastic behavior in small amplitude oscillatory shear flow fields was investigated over a broad range of angular frequencies. In this article, both the strain amplitude and concentration dependencies of dynamic viscoelastic behavior were reported at full length from the experimental data obtained from strain-sweep tests. In addition, the linear viscoelastic behavior was explained in detail and the effects of angular frequency and concentration on this behavior were discussed using the well-known power-law type equations. Finally, a fractional derivative model originally developed by Ma and Barbosa-Canovas (1996) was employed to make a quantitative description of a linear viscoelastic behavior and then the applicability of this model was examined with a brief comment on its limitations. Main findings obtained from this study can be summarized as follows: (1) At strain amplitude range larger than 10%, the storage modulus shows a nonlinear strain-thinning behavior, indicating a decrease in storage modulus as an increase in strain amplitude. (2) At strain amplitude range larger than 80%, the loss modulus exhibits an exceptional nonlinear strain-overshoot behavior, indicating that the loss modulus is first increased up to a certain strain amplitude(${\gamma}_0{\approx}150%$) beyond which followed by a decrease in loss modulus with an increase in strain amplitude. (3) At sufficiently large strain amplitude range (${\gamma}_0>200%$), a viscous behavior becomes superior to an elastic behavior. (4) An ability to flow without fracture at large strain amplitudes is one of the most important differences between typical strong gel systems and concentrated xanthan gum solutions. (5) The linear viscoelastic behavior of concentrated xanthan gum solutions is dominated by an elastic nature rather than a viscous nature and a gel-like structure is present in these systems. (6) As the polymer concentration is increased, xanthan gum solutions become more elastic and can be characterized by a slower relaxation mechanism. (7) Concentrated xanthan gum solutions do not form a chemically cross-linked stable (strong) gel but exhibit a weak gel-like behavior. (8) A fractional derivative model may be an attractive means for predicting a linear viscoelastic behavior of concentrated xanthan gum solutions but classified as a semi-empirical relationship because there exists no real physical meaning for the model parameters.

일반 논문 : 동태적인 프랜차이징 시스템 환경에서의 가맹점의 기회주의적 행동과 행동의도에 관한 연구

이재훈 ( Jae Hoon Rhee ),나호섭 ( Ho Seop Na ) 한국중소기업학회 2011 中小企業硏究 Vol.33 No.2

본 연구는 프랜차이즈 시스템의 프랜차이저와 프랜차이지의 관계에서 프랜차이지의 기회주의 행동에 영향을 미치는 선행변수에 대해 살펴보고, 기회주의 행동과 그 선행변수들 간의 관계에서 환경 동태성의 조절효과를 분석하였다. 선행연구 고찰을 통해 기회주의 행동과 그 선행변수들 간의 인과관계를 파악하기 위한 연구가설을 설정하였으며, 이에 기반하여 연구모형을 구축하였다. 가설 검증을 위해 국내 프랜차이즈 시스템에 소속되어 있는 831개의 프랜차이즈를 대상으로 설문조사를 실시하여 자료를 수집하였으며, 다중회귀분석을 실시하였다. 분석 결과, 교환관계의 질은 기회주의 행동에 유의적인 부(-)의 영향을 미치는 것으로 나타났으며, 집중화 정도와 네트워크 크기는 유의적인 정(+)의 영향을 미치는 것으로 나타났다. 또한 기회주의 행동과 그 선행요인들과의 관계에서 환경 동태성의 조절효과를 분석한 결과, 모든 상호작용항이 유의한 부(-)의 영향을 미치는 것으로 나타났다. 결론 부분에서는 연구의 시사점과 한계점 및 향후 연구 방향을 제시한다. Economically operating, a franchise system is being widely recognized as an organizational system that can flexibly respond to a fast-changing business environment. The system is of particular use, in that it could help small businesses with resource constraints to be competitive by providing an opportunity of utilizing outsourcing strategies rather than an integrated structure of firms. In this sense it appears that such a decentralized structure system is greatly attractive to franchisees. Research on the franchise system is based on three theoretical foundations: resource dependence theory, agency theory and transaction cost theory. From the resource dependence perspective, for instance, it is plausible to assume that a franchiser who establishes a new franchise system easily and usefully can attempt to overcome its own resource deficiency by securing a sufficient number of franchisees. This clearly indicates that the franchise system can be beneficial to both of parties. Literature highlights that the key is to mitigate opportunistic behavior by franchisees for a successful operation of a franchise system. The transaction cost theory provides a sound theoretical explanation of why the success of the franchise system in business relies, to a great extent, on effectively managing the opportunism. This study explores the nature and characteristics of opportunistic behavior acted by a franchisee and its antecedents and attempts to analyze their causal relationships in a franchise system. Regarding moderators in the linkages between opportunistic behavior and its antecedents, a vast majority of research focuses on how the concept of trust can be well built up to reduce the opportunistic behavior. From this point of view, a particular emphasis is placed on the moderating effects of environmental dynamism between the linkages. Drawing on relevant literature, six major research hypotheses are developed to empirically clarify the effect of the antecedents on the opportunistic behavior and a conceptual model that illustrates the hypothesized paths is constructed. H1: In a franchise system, quality of relations between a franchiser and franchisee will have a negative effect on the propensity to act opportunistically or on opportunistic behavior. H2: In a franchise system, firm-specific investment in terms of franchisees will have a negative effect on the propensity to act opportunistically or on opportunistic behavior. H3: In a franchise system, the higher the extent of centrality, the greater the possibility of acting with opportunism. H4: In a franchise system, network size measured as the number of franchisees will have a positive effect on the propensity to act opportunistically or on opportunistic behavior. H5: In a franchise system, dependency will have a negative effect on the propensity to act opportunistically or on opportunistic behavior. H6: In a franchise system, environmental dynamism will moderate the relationship between all the antecedents and opportunistic behavior. To test the hypotheses, data is gathered from a total of 831 franchisees that are identified as operating in domestic franchise systems using questionnaires and multiple regression analyses are run. Results reveal that quality of relations between a franchiser and franchisee is found to significantly and positively affects opportunistic behavior. This finding indicates that franchisees could seek to avoid acting with opportunism when the franchisees perceive and recognize positively support provided by a franchiser and the franchisees voluntarily cooperate with their franchiser toward a mutual gain. It is also found that the higher the extent of centrality, the greater the possibility of acting with opportunism. In general, centrality tends to go hand in hand with the relatively lower level of opportunism in an organization. In a franchise system, however, it is clear that a franchise`s headquarter has a limited level of control over franchisees as it has a form of the horizontal structure due to geographical disperse. Because of this line of reasoning, an attempt to get the level of control high could make franchisees recognize that a franchiser has a lower degree of trust for them, thereby leading to the high extent of opportunism. The results also indicate that network size measured as the number of franchisees has a positive effect on the propensity to act opportunistically in a franchise system. On the contrary, two other independent variables are found to insignificantly affect the consequence. More importantly, the results of moderated regression analysis show that environmental dynamism is a significant moderating variable in the relationship between all the antecedents of opportunistic behavior suggested in the present study and the consequence. It is also found that the moderator is even significant in the linkage between the dependent variable and two independent variables-firm-specific investment and dependency - which are found to be insignificant in a linear regression analysis. This finding proves that franchisees that operate in a very dynamic business environment have a tendency to be strongly tied to their franchiser. From these findings, several implications are presented. Since this research would be the first to place emphasis on environmental dynamism as a moderator that is expected to reduce an opportunistic propensity in a franchise system, it broadens the theoretical scope for research into a franchise system. This research also pays attention to the importance of network size in elucidating one of the reasons for opportunistic behavior of franchisees. Results indicate that the size of the network must be taken into careful account so as for a franchisee to avoid acting opportunistically to a significant extent. It provides a managerial implication that the franchise business should be run with the appropriate number of franchisees that a franchiser can take control over effectively. Additionally, the result shows that interaction between firm-specific investment and environmental dynamism plays a significant role in decreasing franchisees` opportunistic behavior. This denotes that, under an intensified dynamic and competitive environment, a franchisee is likely to invest firm-specific assets toward its franchise` policy. Although it has these contributions and many practical implications, the present study also has some limitations. The analysis depends totally on one-way based data obtained by franchisees, which has the limitation of not reflecting the intention of the franchiser, thereby having room of occurring bias. This suggests that it would be meaningful if further research is conducted with dyadic data. Including the quality of communications and reputation of a franchise, more antecedents of opportunistic behavior need to be taken into consideration to have more robust results. In addition, it should be fruitful to link opportunistic behavior to performance. To perform a more robust test, it would be necessary to take account of other extraneous factors such as the prior business experience of a franchise`s founder and ownership types which also could be influential on opportunism of franchisees in the relationship.

안티푸라민-에스^® 로션의 레올로지 특성 연구

국화윤,송기원,Kuk, Hoa-Youn,Song, Ki-Won 한국약제학회 2009 Journal of Pharmaceutical Investigation Vol.39 No.3

Using a strain-controlled rheometer [Advanced Rheometric Expansion System (ARES)], the steady shear flow properties and the dynamic viscoelastic properties of $Antiphlamine-S^{(R)}$ lotion have been measured at $20^{\circ}C$ (storage temperature) and $37^{\circ}C$ (body temperature). In this article, the temperature dependence of the linear viscoelastic behavior was firstly reported from the experimental data obtained from a temperature-sweep test. The steady shear flow behavior was secondly reported and then the effect of shear rate on this behavior was discussed in detail. In addition, several inelastic-viscoplastic flow models including a yield stress parameter were employed to make a quantitative evaluation of the steady shear flow behavior, and then the applicability of these models was examined by calculating the various material parameters. The angular frequency dependence of the linear viscoelastic behavior was nextly explained and quantitatively predicted using a fractional derivative model. Finally, the strain amplitude dependence of the dynamic viscoelastic behavior was discussed in full to elucidate a nonlinear rheological behavior in large amplitude oscillatory shear flow fields. Main findings obtained from this study can be summarized as follows : (1) The linear viscoelastic behavior is almostly independent of temperature over a temperature range of $15{\sim}40^{circ}C$. (2) The steady shear viscosity is sharply decreased as an increase in shear rate, demonstrating a pronounced Non-Newtonian shear-thinning flow behavior. (3) The shear stress tends to approach a limiting constant value as a decrease in shear rate, exhibiting an existence of a yield stress. (4) The Herschel-Bulkley, Mizrahi-Berk and Heinz-Casson models are all applicable and have an equivalent validity to quantitatively describe the steady shear flow behavior of $Antiphlamine-S^{(R)}$ lotion whereas both the Bingham and Casson models do not give a good applicability. (5) In small amplitude oscillatory shear flow fields, the storage modulus is always greater than the loss modulus over an entire range of angular frequencies tested and both moduli show a slight dependence on angular frequency. This means that the linear viscoelastic behavior of $Antiphlamine-S^{(R)}$ lotion is dominated by an elastic nature rather than a viscous feature and that a gel-like structure is present in this system. (6) In large amplitude oscillatory shear flow fields, the storage modulus shows a nonlinear strain-thinning behavior at strain amplitude range larger than 10 % while the loss modulus exhibits a weak strain-overshoot behavior up to a strain amplitude of 50 % beyond which followed by a decrease in loss modulus with an increase in strain amplitude. (7) At sufficiently large strain amplitude range (${\gamma}_0$>100 %), the loss modulus is found to be greater than the storage modulus, indicating that a viscous property becomes superior to an elastic character in large shear deformations.

Dynamic functional connectivity analysis reveals improved association between brain networks and eating behaviors compared to static analysis

Park, Bo-yong,Moon, Taesup,Park, Hyunjin Elsevier 2018 Behavioural brain research Vol.337 No.-

<P><B>Abstract</B></P> <P>Uncontrollable eating behavior is highly associated with dysfunction in neurocognitive systems. We aimed to quantitatively link brain networks and eating behaviors based on dynamic functional connectivity analysis, which reflects temporal dynamics of brain networks. We used 62 resting-state functional magnetic resonance imaging data sets representing 31 healthy weight (HW) and 31 non-HW participants based on body mass index (BMI). Brain networks were defined using a data-driven group-independent component analysis and a dynamic connectivity analysis with a sliding window technique was applied. The network centrality parameters of the dynamic brain networks were extracted from each brain network and they were correlated to eating behavior and BMI scores. The network parameters of the executive control network showed a strong correlation with eating behavior and BMI scores only when a dynamic (<I>p</I> < 0.05), not static (<I>p</I> > 0.05), connectivity analysis was adopted. We demonstrated that dynamic connectivity analysis was more effective at linking brain networks and eating behaviors than static approach. We also confirmed that the executive control network was highly associated with eating behaviors.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Links between brain networks and behaviors of eating disorders were explored. </LI> <LI> Executive control network was associated with behaviors of eating disorders and BMI. </LI> <LI> Dynamic, not static, connectivity analysis revealed significant results. </LI> </UL> </P>

반고형 식품류의 정상유동특성 및 동적 점탄성

송기원,장갑식 한국유변학회 1999 Korea-Australia rheology journal Vol.11 No.2

본 연구에서는 Rheometrics Fluids Spectrometer(RFS II)를 사용하여 세 종류의 상용 반고형 식품(마요네즈, 토마토 케찹, 와사비)의 정상유동특성 및 소진폭 전단변형하에서의 동적 점탄성을 광범위한 전단속도와 각주파수 영역에서 측정하였다. 이들 측정결과로부터 정상유동특성의 전단속도 의존성 및 동적 점탄성의 각주파수 의존성을 보고하였다. 그리고 항복응력의 항을 갖는 몇 가지 점소성 유동모델을 사용하여 정상유동특성을 정량적으로 평가하고 이들 모델의 적용성을 비교.검증하였다. 나아가서 수정된 형태의 지수법칙 관계식을 도입하여 정상유동특성(비선형 거동)과 동적 점탄성(선형 거동)간의 상관관계에 대해 검토하였다. 이상의 연구를 통해 얻어진 결과를 요약하면 다음과 같다. (1) 반고형 식품류는 상당한 크기의 항복응력을 갖는 점소성 물질로서 전단속도가 증가할수록 정상류점도가 급격히 감소하는 shear-thinning 거동을 나타낸다. (2) Herschel-Bulkley 모델, Mizrahi-Berk 모델 및 Heinz-Casson 모델은 반고형 식품류의 정상유동거동을 잘 기술할 수 있다. 이들 중에서도 Heinz-Casson 모델이 가장 우수한 적용성을 갖는다 (3) 반고형 식품류는 임계 전단속도를 경계로 shear-thinning 특성이 변화한다. 즉 낮은 전단속도에 비해 높은 전단속도 영역에서 분산입자 응집체의 구조파괴가 더욱 활발하게 진행되어 보다 현저한 shear-thinning 특성을 나타낸다. (4) 저장 탄성률 및 손실탄성률은 양자 모두 각주파수가 증가할수록 점차로 증가하나 각주파수 의존성은 그다지 크지 않다. 또한 광범위한 각주파수 영역에서 탄성적 성질이 점성적 성질에 비해 보다 우세하게 나타난다. (5) 정상류점도, 동적점도 및 복소점도는 모두 power-law 모델의 거동을 잘 만족한다. 또한 정상유동특성과 동적 점탄성간의 상관관계는 수정된 형태의 지수법칙 관계식에 의해 잘 기술될 수 있다. Using a Rheometrics Fluids Spectrometer(RFS II), the steady shear flow and the small-amplitude dynamic viscoelastic properties of three kinds of semi-solid food materials(mayonnaise, tomato ketchup, and wasabi) have been measured over a wide range of shear rates and angular frequencies. The shear rate dependence of steady flow behavior and the angular frequency dependence of dynamic viscoelastic behavior were reported from the experimentally measured data. In addition, some viscoplastic flow models with a yield stress term were employed to make a quantitative evaluation of the steady flow behavior, and the applicability of these models was also examined in detail. Furthermore, the correlations between steady shear flow(nonlinear behavior) and dynamic viscoelastic(linear behavior)properties were discussed using the modified power-law flow equations. Main results obtained from this study can be summarized as follows : (1) Semi-solid food materials are regarded as viscoplastic fluids having a finite magnitude of yield stress, and their flow behavior shows shear-thinning characteristics, exhibiting a decrease in steady flow viscosity with increasing shear rate. (2) The Herschel-Bulkley, Mizrahi-Berk, and Heinz-Casson models are all applicable to describe the steady flow behavior of semi-solid food materials. Among these models, the Heinz-Casson model has the best validity. (3) Semi-solid food materials show a stronger shear-thinning behavior at shear rate region higher than a critical shear rate where a more progressive structure breakdown takes place. (4) Both the storage and loss moduli are increased with increasing angular frequency, but they have a slight dependence on angular frequency. The elastic behavior is dominant to the viscous behavior over a wide range of angular frequencies. (5) All of the steady flow, dynamic, and complex viscosities are well satisfied with the power-law model behavior. The relationships between steady shear flow and dynamic viscoelastic properties can well be described by the modified forms of the power-law flow equations.

임파워링 리더십이 협력행동에 미치는 영향: 그릿의 매개효과와 조직공정성의 조절효과

김세준,신제구 대한경영학회 2024 大韓經營學會誌 Vol.37 No.4

본 연구의 목적은 임파워링 리더십(empowering leadership)이 조직구성원의 협력행동(Corporative behavior)에 긍정적인 영향을 미치는 메커니즘을 검증하는 것이다. 현대 조직은 불확실하고 경쟁적인 환경에서 조직구성원들의 역량을 발휘하도록 독려하기 위한 리더십이 필요하다. 따라서 조직의 리더는 권한위임 및 책임부여를 통해 구성원들의 내적 동기부여를 통한 문제해결을 모색하는 임파워링 리더십에 주목하고 있다. 또한 조직의 성과를 달성하기 위한 구성원의 협력행동은 환경변화에 효과적으로 대응하고 개인주의 문화를 개선하기 위해 더욱 중요해지고 있다. 이 과정에서 특히 어려운 환경에서도 성공과 완수 등의 선행변인으로 주목받고 있는 비인지적 특성인 그릿(grit)을 경유하여 조직의 성과 달성을 위한 심리적 태도인 협력행동에 긍정적인 영향을 미칠 수 있는지 실증해 보고자 한다. 본 연구는 협력행동을 강화시키기 위한 선행요인으로서 임파워링 리더십의 직접효과와 그릿의 매개효과, 조직공정성의 조절효과를 밝히는 데 목적이 있다. 가설을 실증적으로 검증하기 위해 다양한 업종의 직장인 409명을 대상으로 설문을 실시하였고, PROCESS macro(Hayes, 2013)를 이용하여 분석하였다. 연구결과, 첫째, 임파워링 리더십은 협력행동에 정(+)의 영향을 미치는 것으로 나타났다. 둘째, 임파워링 리더십은 그릿에 정(+)의 영향을 미치는 것으로 나타났다. 셋째, 그릿은 협력행동에 정(+)의 영향을 미치는 것으로 나타났다. 넷째, 임파워링 리더십이 협력행동에 미치는 정(+)의 영향은 그릿에 의해 정(+)적으로 매개됨을 확인하였다. 다섯째, 임파워링 리더십이 협력행동에 미치는 그릿의 정(+)적인 효과는 조직공정성에 의해 정(+)적으로 조절됨을 확인하였다. 본 연구는 구조적 요인으로서 임파워링 리더십과 심리적인 요인인 그릿이 구성원 협력행동을 강화시키는 심리적 메커니즘을 규명하였다. 이러한 영향 관계에서 조직공정성의 조절효과를 밝힘으로써 기존 연구를 확장하고 협력행동을 강화하기 위한 새로운 연구를 진행하였음에 의의를 둔다. 연구 결과를 통해 새로운 시사점을 제시하고 임파워링 리더십에 관한 향후 연구 방향 및 한계점을 제시하였다 In today’s dynamic and competitive organizational landscape, effective leadership is imperative for fostering cooperative behavior among members. This study delves into the mechanisms through which empowering leadership influences cooperative behavior, with a focus on the mediating role of grit and the moderating influence of organizational justice. Empowering leadership, characterized by delegation of authority and responsibility, has garnered attention as a means to motivate members internally and encourage their capabilities. Against the backdrop of a shifting organizational culture towards collaboration, this study aims to explore the impact of empowering leadership on cooperative behavior. A survey of 409 office workers across diverse industries was conducted to empirically test the proposed hypotheses. Utilizing the PROCESS macro (Hayes, 2013), the study analyzed the direct effect of empowering leadership on cooperative behavior, as well as the mediating effect of grit and the moderating effect of organizational justice. Results unveil several key findings. Firstly, empowering leadership exerts a positive influence on cooperative behavior, affirming its significance in fostering a collaborative organizational environment. Secondly, empowering leadership positively correlates with grit, highlighting its role in cultivating perseverance and resilience among members. Moreover, grit emerges as a significant predictor of cooperative behavior, underscoring its importance as a psychological driver for achieving organizational objectives. Importantly, the study confirms the mediating effect of grit in the relationship between empowering leadership and cooperative behavior, shedding light on the underlying psychological mechanism. Furthermore, organizational justice emerges as a crucial moderator, enhancing the positive effect of grit on cooperative behavior. This highlights the pivotal role of a fair organizational climate in leveraging individual characteristics towards collective outcomes. By elucidating these relationships, this study contributes to a deeper understanding of how empowering leadership, grit, and organizational justice collectively shape cooperative behavior within organizations. It provides valuable insights for organizational leaders seeking to cultivate a collaborative culture and underscores the importance of fairness in harnessing the potential of individual traits. In conclusion, this research extends existing literature on empowering leadership and offers practical implications for enhancing cooperative behavior in modern organizations. It also outlines avenues for future research while acknowledging the limitations inherent in studying complex organizational dynamics.

양면성 혁신의 인식수준이 조직몰입 및 혁신행동에 미치는 영향 - 환경 동태성의 조절효과를 중심으로 -

최호준 ( Choi Ho-joon ) 한국관광산업학회 2017 Tourism Research Vol.42 No.1

오늘날 환경 동태성이 높은 기업환경에서 새로운 역량을 개발하여 장기적 성장을 목표로 하는 탐험(exploration)혁신과 기존의 역량을 재배치하고 확장하여 단기적 성장을 목표로 하는 활용(exploitation) 혁신은 경쟁기업과의 경쟁우위 확보를 통한 지속적 성장의 중요한 요인이 된다고 할 수 있다. 양면성 혁신에 대한 직원의 인식수준에 따라 종사원의 조직에 대한 몰입의 정도가 높아지게 되면 고객에게 제공되는 서비스의 질적 향상을 유발하여 기업의 성과향상을 추구할 수 있을 것으로 기존의 선행연구에서 주장하고 있다. 호텔기업의 지속적 경쟁우위를 위해서는 혁신행동이 수반되어야 하는데 서비스 산업 중심의 관점에서 혁신행동은 종사원이 고객에게 새로운 아이디어와 기술 및 프로세스 등을 수행하는 것으로 정의 할 수 있다. 조직과 개인의 관계에 있어 조직에 대한 일체감이 강한 종사원은 애착의 정도가 높고 조직의 발전에 기여하고자 하는 경향이 강하게 나타나게 되어 조직을 발전시키고자 하는 행동이 나타난다. 같은 맥락으로 다양한 선행연구에서 조직몰입과 혁신행동 간의 관계를 설명하고 있다. 따라서 양면성 혁신에 대한 인식 수준이 높은 직원들은 조직 몰입을 통해 혁신행동에 긍정적 영향을 미칠 것으로 예측 되는데 이는 종사원들이 조직에 몰입할수록 공식적으로 조직에서 요구하는 수준 이상의 과업을 수행하고자 하는 행동의 수준이 높아지게 되며 동료들을 자발적으로 도와주고 조직과 관련된 활동에 적극적으로 참여하는 조직몰입의 수준이 높아지게 된다. 본 연구는 국내 호텔 직원들을 대상으로 양면성 혁신의 인식수준이 혁신행동에 어떠한 영향을 미치는지에 대한 실증연구를 수행한 연구결과를 요약하면 다음과 같다. .첫째, 양면성 혁신의 인식수준은 조직몰입에 정(+)영향을 미치는 것으로 나타났다. 둘째, 정서적 몰입과 규범적 몰입은 혁신행동에 정(+)의 역할을 미치는 것으로 나타났으나 지속적 몰입은 혁신행동에 유의한 영향력을 미치지 않는 것으로 나타났다. 셋째, 양면성 혁신의 인식수준이 지속적 몰입과 규범적 몰입에 미치는 영향은 환경 동태성에 의해 조절되는 것으로 나타났으나 양면성 혁신의 인식수준이 정서적 몰입에 미치는 영향은 환경 동태성에 의한 조절효과가 없는 것으로 나타났다. 본 연구는 호텔기업에서는 이루어지지 않았던 양면성 혁신에 대한 연구를 통해 인적자원의 효율적 관리와 조직몰입을 매개로 하여 고객과 상호작용 할 수 있는 혁신행동의 개발을 위한 이론적 근거와 실무적 시사점을 제시할 수 있었다는데 의의가 있다고 할 수 있다. Therefore, in nowadays corporation environment with high environmental dynamism, exploration innovation with the purpose of long term progress through development of new capability and exploitation innovation with the purpose of short term progress through reassignment of existing capability and expansion are through to be important factors for sustainable growth by securing competitive dominance. Also, based on the level of perception of employees on ambidexterity innovation, the quality of service provided to customers will be enhanced and will pursue the higher performance of the company; such are proclaimed in existing preceding studies. For the hotel corporations to pursue persistent competitive predominance, it must accompany innovation behavior; in the perspective of service industry centered perspective, innovation behavior will provide new value to customer and define process of interaction.In the relationship between group and individual, the employee with high sense of unity has high degree of loyalty and tend to contribute to the development of group and show behaviors to develop it. In the same sense, preceding studies explain the relationship between organizational commitment and innovative behaviors. Therefore, employees with high level of perception toward ambidexterity innovation are predicted to have positive influenceon service innovation behavior through organizational commitment; such means that when group members are taking efforts to perform more than what the group officially demand, the level of activity will grow. The research result of empirical analysis can be summarized as the following. First, the level of perception of ambidexterity innovation showed positive influence on organizational commitment . Second, the affective commitment and normative immersion showed positive influence on innovation behavior; continuance commitment did not show statistically significant influence on innovation behavior. Third, the influence the level of perception of ambidexterity innovation has on continuance commitment and normative commitment showed mediation by environmental dynamism; the influence the level of perception of ambidexterity innovation has on affective commitment did not show mediation by environmental dynamism. This study is significant as it provided theoretical proof and practical implications for the de velopment of service innovation behavior that can interact with customers based on efficient management of human resources and organizational commitment through the study on ambidexterity innovation that hasn`t been performed in hotel companies.

Dynamic Path Planning Based on Fuzzy and Behavior Control Idea

Lei Yanmin,Xing Xiaoxue,Feng Zhibin,Guan Xiuli,Du Limin 보안공학연구지원센터 2014 International Journal of Control and Automation Vol.7 No.12

In order to solve dynamic path planning problem of multi-robot systems in unknown dynamic environment, a kind of method based on fuzzy and behavior control idea was proposed in this paper. This method designs two fuzzy controllers, which are danger degree fuzzy controller and velocity fuzzy controller. They took fully into account the position and the velocity of the obstacle and the azimuth of the target. Fuzzy rules were designed based on behavior control idea and which reflected move-to-goal behavior, avoid-obstacle behavior and follow-obstacle behavior. The experimental results show that the proposed method is feasible and valid and is suitable for the dynamic and complicated environment in particularly.

Dynamic behavior analysis of reciprocating compressor with subsidence fault considering flexible piston rod

Shungen Xiao,Hongli Zhang,Shulin Liu,Feng Jiang,Mengmeng Song 대한기계학회 2018 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.32 No.9

Subsidence wear is inevitable in a reciprocating compressor system, but how to induce body vibration is not clear. We investigated the dynamic behavior of a reciprocating compressor system with subsidence fault considering a flexible piston rod. The flexible piston rod was modeled as a cantilever beam. The dynamic model, in which the influence of the subsidence size, variational cylinder pressure, impact effects and piston rod flexibility are taken into account, was established. Influences of the four parameters including subsidence size, vertical force of flexible piston rod, cylinder pressure and crankshaft speed were analyzed in the dynamic response. Numerical results reveal that with the change of the four parameters, the existence of subsidence fault has a significant effect on the displacement, velocity and acceleration of the crosshead in the transverse direction, but only conspicuously affects the acceleration in the longitudinal direction. In addition to cylinder pressure, the larger the values of the other three parameters, the greater the influences. The cylinder pressure is a time-varying working load. Not only the cylinder pressure but also the open/close time of the valves and change rate of the pressure all affect the dynamic behavior of the system with subsidence. Meanwhile, the change in the vertical force of the flexible piston rod has a remarkable effect on the jump position of the crosshead, but the effect of other parameters is not obvious. In addition, the changes of parameters produce obvious influences on the impact force and the impact range of the crosshead. The stability of the reciprocating compressor system was studied using Poincaré portraits method. The result shows that the system with subsidence fault has chaotic behavior.