• Korean Journal of Mathematics
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• 제31권2호
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• pp.203-216
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• 2023

We consider a bistable attraction-attraction chemotaxis system with global coupling term. The study in this paper asserts that conditions for chemotactic coefficients for attraction and attraction and the global coupling constant to show existence of stationary solutions and Hopf bifurcation in the interfacial problem as the bifurcation parameters vary are obtained analytically.

• 한국관광식음료학회지:관광식음료경영연구
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• 제12권1호
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• pp.79-110
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• 2001

Tourist Destination is based on tourism attractions. Components of Tourism attraction are included tourism resources, entertainment facilities, transportation, accommodation, infrastructure, assistance facilities & service, hospitality, information facilities & service, and retailing & service. Tourism resources of them is the key to determine destination development pattern, because tourism attraction that attract tourists is based on tourism resources. Therefore, there are need to study what is tourism attraction of destination at the view of tourists and what is destination development pattern based on it to develop tourism attraction that is able appeal tourists. The purpose of this study is to examine what effect of tourism attraction affects destination development pattern. This study defined Haeundae, Kwanganri, Songjung, Taejongdae in Pusan, Korea as research areas. Research data were collected from 300 respondents by a simple random sampling method. A final 284 usable questionaries were used for empirical analysis after data purification process. Reliability and validity of the scale on the tourism attraction, destination image, and facility needs have been evaluated using Cronbach $\alpha$, item-total correlations. This study analyzed the factors of the tourism attraction and destination images. The result obtained that tourism attraction is divided relaxation attraction, local activity attraction, culture . nature attraction and touring circuit attraction, and destination image is divided culture . urban attractiveness, touring attractiveness, local . stay attractiveness, convenience of travel and relativeness for destination investigated. ANOVA and regression (stepwise) were used to test hypotheses. Based on the results of hypotheses testing, major findings of the empirical research are as follow : 1. The tourism attraction and destination image are significantly different, but facility needs are not significantly by destinations (e. g. Haeundae, Kwanganri, Songjung, Taejongdae) . 2. Destination development pattern is a(fact by the tourism attraction in partial. In case of Haeundea, relaxation attraction take effect partially spa, history and marine/spa tourism. 3. The destination development pattern is influenced by the destination image in partial. In case of Kwanganri, the natural . activity attractiveness and urban tourism images have been found as influential factors that affect marine tourism. 4. The destination images are influenced the physical attributes in literature review, but the destination image are taken effect partially the tourism attraction in this study. 5. Destination development pattern are influenced by the tourism attraction and the destination image partially. This research has provided a variety of practical suggestions. Especially, it was suggested that the destination have appeal to tourists by strengthening attraction and improving weakness. Also, we need to specialize destination in same destination development pattern.

• 한국물환경학회지
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• 제31권1호
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• pp.1-11
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• 2015

In this study, the attraction efficiency of the by-pass fishway installed at Dalseong Weir in Nakdong River was assessed according to operation of the attraction waterway by using River2D which is a two-dimensional physical habitat simulation model. The model was calibrated and validated through the measured water elevation. The attraction efficiency of the fishway was evaluated at the low flow condition because the target fish, Zacco platypus (Z. platypus), have moved frequently up and downstream at the spawning season from April to June. From simulation results, it can be deduced that the attraction efficiency at situation of open attraction waterway is superior to that of close attraction waterway. Also it is shown that velocity field at inner region of the fishway is suitable for migration of the fish.

• 한국조리학회지
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• 제9권1호
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• pp.81-100
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• 2003

This study performed a analysis of customer purchasing behavior in family restaurant. The type of family restaurant marketing activity was classified to free gift promotion, special menu promotion, discount promotion, membership program, coupon, co-marketing promotion were assumed to stimulus. The awareness of stimulus and exposure, attention, comprehension process was assumed to attraction and the contribution of stimulus was assumed to satisfaction on this study. A sample of study is assigned women customers are core customer group not family restaurant but all of industry. The study has showed co-marketing is the most outstanding marketing activity in family restaurant all of aspects and the awareness and attraction of co-marketing is higher than satisfaction. A result of t-test for awareness and attraction of discount and coupon promotion is attended. Attraction of them is higher than awareness. But satisfaction of them is lower than attraction means that family restaurants should makes an effort to develop the customer satisfaction to ensure customer loyalty through the discount and coupon promotion. On one-way ANOVA of awareness, attraction and satisfaction by age, discount and coupon promotion is related to it Speciality as low age as sensitive in awareness, attraction, satisfaction of discount promotion.

• 대한수학회지
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• 제59권6호
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• pp.1229-1254
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• 2022

In this paper, we introduce the concepts of (quasi-)weakly almost periodic point and minimal center of attraction for ℤ^d₊-actions, explore the connections of levels of the topological structure the orbits of (quasi-)weakly almost periodic points and discuss the relations between (quasi-)weakly almost periodic point and minimal center of attraction. Especially, we investigate the chaotic dynamics near or inside the minimal center of attraction of a point in the cases of S-generic setting and non S-generic setting, respectively. Actually, we show that weakly almost periodic points and quasi-weakly almost periodic points have distinct topological structures of the orbits and we prove that if the minimal center of attraction of a point is non S-generic, then there exist certain Li-Yorke chaotic properties inside the involved minimal center of attraction and sensitivity near the involved minimal center of attraction; if the minimal center of attraction of a point is S-generic, then there exist stronger Li-Yorke chaotic (Auslander-Yorke chaotic) dynamics and sensitivity (ℵ₀-sensitivity) in the involved minimal center of attraction.

• 한국경제지리학회지
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• 제15권4호
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• pp.735-751
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• 2012

관광지 관광객의 경험을 중심으로 관광객의 관광지 선택속성에 대해 파악하고, 관광지 선택속성이 만족 및 행동의도에 대한 영향관계를 확인하는 연구는 매우 필요하다. 이에 본 연구에서는 대전 뿌리공원 관광객을 대상으로 방문 후의 설문조사를 통하여 대전 뿌리공원 관광지 선택속성이 관광객의 만족 및 행동의도에 어떠한 영향을 미치는지를 규명함에 목적이 있었다. 이에 실증분석을 통하여 관광지 선택속성이 만족 및 행동의도에 미치는 영향 관계, 그리고 관광지 선택속성이 만족 및 행동의도에 미치는 영향관계에서 관광지 이미지의 조절효과에 대한 분석이 이루어졌다. 본 연구의 가설 검증결과, 대전 뿌리공원 관광지 선택속성과 만족과의 관계에서 '활동 체험성' 및 '접근 비용성' 요인은 만족에 있어 영향관계가 높은 것으로 나타났다. 그리고 관광지 선택속성과 행동의도 관계에서 '활동 체험성', '접근 비용성' 과 '친숙성' 요인이 행동의도에 영향관계가 있는 것으로 파악되었다. 마지막으로 관광지 이미지 조절변수에 따른 관광지 선택속성과 만족간의 관계에서는 유의한 조절관계가 있는 것으로 나타났지만, 행동의도에는 조절역할을 하지 못하는 것으로 나타났다.

• 대한수학회지
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• 제49권4호
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• pp.703-713
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• 2012

In this paper we study ${\omega}$-limit sets and attraction of non-autonomous discrete dynamical systems. We introduce some basic concepts such as ${\omega}$-limit set and attraction for non-autonomous discrete system. We study fundamental properties of ${\omega}$-limit sets and discuss the relationship between ${\omega}$-limit sets and attraction for non-autonomous discrete dynamical systems.

• 대한수학회보
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• 제46권6호
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• pp.1237-1248
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• 2009

The domain of attraction of a nonlinear differential equations is the region of initial points of solution tending to the equilibrium points of the systems as the time going. Determining the domain of attraction is one of the most important problems to investigate nonlinear dynamical systems. In this article, we first present two algorithms to determine the domain of attraction by using the moment matrices. In addition, as an application we consider a class of SIRS infection model and discuss asymptotical stability by Lyapunov method, and also estimate the domain of attraction by using the algorithms.

• 한국마린엔지니어링학회:학술대회논문집
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• 한국마린엔지니어링학회 2012년도 전기공동학술대회 논문집
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• pp.121-122
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• 2012

In this research, we studied on improvement of the attraction force of solenoid operated valve for normal operation in harsh environment like vessel. Attraction force of the solenoid valves is effected by the B-H characteristics of magnetic material and the size of coil. In order to specify impact of the affection, we performed the B-H characteristics test and attraction force. Test results show that magnetic flux densities of the materials are difference each other more than 2 times in same magnetic intensity, and attraction force of the solenoid valve is 1.7 times difference as changes of resistance and the number of coil winding of solenoid.

• Journal of applied mathematics & informatics
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• 제36권5_6호
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• pp.349-358
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• 2018

In this article, we discuss the domain of attraction of HIV-1 system by using the moment theory. First, the asymptotic stabilities of the equilibrium point of the system are given, and then we introduce how to use the moment method to estimate domain of attraction. Finally, one simulation shows the effectiveness of moment method.