• Korean Journal of Mathematics
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• v.31 no.2
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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.

• Journal of Applied Tourism Food and Beverage Management and Research
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• v.12 no.1
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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.

• Journal of Korean Society on Water Environment
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• v.31 no.1
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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.

• Culinary science and hospitality research
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• v.9 no.1
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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.

• Journal of the Korean Mathematical Society
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• v.59 no.6
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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.

• Journal of the Economic Geographical Society of Korea
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• v.15 no.4
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• pp.735-751
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• 2012

A study in which tourist attraction selection attributes of tourists are identified focused on experience of tourists in attraction site and relationship between impacts of tourist attraction selection attributes on satisfaction and behavioral intentions is examined is very necessary. Therefore, the purpose of this study is to investigate the impact of Daejeon ppuri park tourist attraction selection attribute on tourist satisfaction and behavioral intentions through survey targeting tourists after they visit Daejeon ppuri park. Relationship between impacts of tourist attraction selection attributes on satisfaction and behavioral intentions and mediated effect of image of tourist attraction in relationship between impacts of tourist attraction selection attributes on satisfaction and behavioral intentions are analyzed through empirical analysis. As the results of verification of the hypothesis in this study, 'activity and experience' and 'approach and cost' factors show higher impact on satisfaction in relationship between Daejeon ppuri park tourist attraction selection attribute and tourist satisfaction. In addition, it shows that 'activity and experience', 'approach and cost' and 'familiarity' factors have impact on behavioral intentions in relationship between tourist attraction selection attribute and behavioral intentions. Finally, it shows the significant mediated effect in relationship between tourist attraction selection attribute and tourist satisfaction depending on mediated effect of image of tourist attraction, but it does not work as mediated function in behavioral intentions.

• Journal of the Korean Mathematical Society
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• v.49 no.4
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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.

• Bulletin of the Korean Mathematical Society
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• v.46 no.6
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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.

• Proceedings of the Korean Society of Marine Engineers Conference
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• 2012.06a
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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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• v.36 no.5_6
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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.