• The KIPS Transactions:PartB
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• v.10B no.1
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• pp.1-12
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• 2003

In this paper, we Introduce the Unreal Tournament (UT) game and the Gamebots system. The former it a well-known 3D first-person action game and the latter is an intelligent agent research testbed based on UT And then we explain the design and implementation of KGBot, which is an intelligent non-player character deploying effectively within the 3D virtual environment provided by UT and the Gamebots system. KGBot is a bot client within the Gamebots System. KGBot accomplishes its own task to find out and dominate several domination points pro-located on the complex surface map of 3D virtual environment KGBot adopts UM-PRS as its control engine, which is a general BDI agent architecture. KGBot contains a hierarchical knowledge base representing its complex behaviors in multiple layers. In this paper, we explain details of KGBot's Intelligent behaviors, tuck af locating the hidden domination points by exploring the unknown world effectively. constructing a path map by collecting the waypoints and paths distributed over the world, and finding an optimal path to certain destination based on this path graph. Finally we analyze the performance of KGBot exploring strategy and control engine through some experiments on different 3D maps.

• Journal of the Korea Society of Computer and Information
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• v.27 no.5
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• pp.157-163
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• 2022

As the online game market grows, the use of game bots is causing the most serious problem for game services. We propose a harvest coordinate analysis model to detect harvesting bots among game bots of the Massively Multiplayer Online Role-Playing Games(MMORPGs) genre. The proposed model analyzes the player's harvesting behavior using the coordinate data. Game bots can obtain in-game goods and items more easily than normal players and are not affected by realistic restrictions such as sleep time and character manipulation fatigue. As a result, there is a difference in harvesting coordinates between normal players and game bots. We divided the coordinate zones and used these coordinate zone differences to distinguish between game bot players and normal players. We created a dataset with NCSoft's AION log and applied it to a random forest model to detect game bots, and as a result, we derived performance with a recall of 0.72 and a precision of 0.92.

• Steel and Composite Structures
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• v.41 no.5
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• pp.761-773
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• 2021

This study presents a 3D non-linear finite element (FE) assessment of dynamic soil-structure interaction (SSI). The numerical investigation has been performed on the time domain through a Finite Element (FE) system, while considering the nonlinear behavior of soil and the multi-directional nature of genuine seismic events. Later, the FE outcomes are analyzed to the recorded in-situ free-field and structural movements, emphasizing the numerical model's great result in duplicating the observed response. In this work, the soil response is simulated using an isotropic hardening elastic-plastic hysteretic model utilizing HSsmall. It is feasible to define the non-linear cycle response from small to large strain amplitudes through this model as well as for the shift in beginning stiffness with depth that happens during cyclic loading. One of the most difficult and unexpected tasks in resolving soil-structure interaction concerns is picking an appropriate ground motion predicted across an earthquake or assessing the geometrical abnormalities in the soil waves. Furthermore, an artificial neural network (ANN) has been utilized to properly forecast the non-linear behavior of soil and its multi-directional character, which demonstrated the accuracy of the ANN based on the RMSE and R² values. The total result of this research demonstrates that complicated dynamic soil-structure interaction processes may be addressed directly by passing the significant simplifications of well-established substructure techniques.

• The Journal of the Korea Contents Association
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• v.22 no.2
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• pp.710-723
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• 2022

TV program favorability does not necessarily lead to actions related to programs such as producing videos, emotions, webtoons, and goods, participating in concerts, and fan meetings. Therefore, there might be a mediating variable between program favorability and related behaviors. This study presents relationships as a mediating variable. This study assumed that if the program favorability is high, a positive relationship can be formed with the program, the characters on the show, the groups appearing in the program, the viewers who watch it together, and viewing affordance. Those formed relations can have positive effects on the program related activities. In the conducted online survey, we found that high favorability has positive effects on intimate relationships with the program, viewing affordance, characters, and other viewers, and these relationships have positive effects on program-related offline and online activities. However, the relationship with the character group has a negative effect on program-related behavior. This may be the result of viewers feeling alienated from highly intimate relationships formed among characters appearing in the show.

• Journal of Fashion Business
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• v.26 no.3
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• pp.33-49
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• 2022

In the metaverse, it is important to embellish aesthetics of user with a character called 'Avatar', a virtual representation of the user. This study provides basic data related to the fashion trend of the metaverse by studying 'Zepeto', a representative Korean platform. For empirical research, Zepeto's "Best Items" section were investigated and analyzed in the first pre-survey. Based on this, the second and main survey was conducted using a questionnaire to investigate users' style-specific preferences and purchasing behaviors for virtual fashion, comparing style preferences between virtual and real, brand preferences, and purchasing behaviors of virtual fashion. The survey found that most users were teenage girls with a high preference for pastel-toned, feminine, and cute casual styles who had a much higher interest in brands bearing idol names than in real-world luxury brands. Many responded that they felt burdened by purchasing items that had to be purchased for cash. The same can be assumed to be the reason why they preferred a suit of items that were fully coordinated rather than individual items. These results seem to reflect characteristics of teenage girls who lack cash with a high preference for idols and feminine-cute casual styles. This study suggests considerations when creating virtual fashion items. By providing basic information, more effects and developments in creating virtual fashion items that reflect consumer preferences and reactions are expected in the future.

• Journal of the Korean Dietetic Association
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• v.29 no.2
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• pp.86-99
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• 2023

In this study, the authors surveyed the dietary habits of all elementary school students registered with the Busan Metropolitan City Office of Education using an online questionnaire called the Dietary Screening Test (DST). The DST consists of 36 items, and these were divided into 5 factors: life rhythm, meal quality, eating development, eating temperament characteristics, and eating habit characteristics. Data were collected from 153,017 students attending 304 schools in Busan, and the responses of 4,020 were included in the analysis. The study was undertaken to document growth and development and diagnose nutrition and dietary problems to provide basic data for the development of customized nutrition education and counseling programs. Results showed that 13.5% and 14.3% of participants were classified as overweight or required weight management for obesity, respectively; 6.7% were underweight. Additionally, 37.0% and 9.5% of children required parental attention at bedtime and sleeping hours, and 14.2% ate too quickly or too slowly. Furthermore, food group consumptions were unbalanced, 25.0% and 64.4% of participants ate grains and protein less than twice a day, respectively, and 72.3% and 74.5% ate kimchi and vegetables less than twice a day, respectively. In contrast, 28.8% of respondents consumed sweet snacks daily or 5~6 times weekly. These findings highlight the need for a standardized school nutrition counseling manual and individually customized nutrition counseling programs to address the nutrition and dietary problems of elementary school students in Busan.

• Advances in materials Research
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• v.12 no.4
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• pp.263-271
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• 2023

In this study, AA1060/Alumina composites were fabricated by combined stir casting and accumulative press bonding (APB). The APB process was repeated up to six press bonding steps at 300Ċ. As the novelty, potential dynamic polarization in 3.5Wt% NaCl solution was used to study the corrosion properties of these composites. The corrosion behavior of these samples was compared and studied with that of the annealed aluminum alloy 1060 and versus the number of APB steps. So, as a result of enhancing influence on the number of APB process, this experimental investigation showed a significant enhancement in the main electrochemical parameters and the inert character of the Alumina particles. Together with Reducing the active zones of the material surfaces could delay the corrosion process. Also, at higher number of steps, the corrosion resistance of composites improved. The sample produced after six number of steps had a low corrosion density in comparison with high corrosion density of annealed specimens. Also, the scanning electron microscopy (SEM), was used to study the corrosion surface of samples.

• Journal of the Korean Chemical Society
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• v.37 no.5
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• pp.483-490
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• 1993

Voltammetric behavior of heavy lanthanide ions has been investigated by the DC, DPP and CV in acetonitrile solution. The reduction of $Gd^{3+}, Tb^{3+}, Dy^{3+}, Ho^{3+}, Er^{3+}, Tm^{3+} 및 Lu^{3+} proceed by three-electron change to the metallic state with totally irreversibility in 0.1M tetraethylammonium perchlorate. However, the reduction of Yb(Ⅲ) proceeds in two steps $(Yb^{3+} ＋ e^- \Leftrightarrow Yb^{2+} and Yb^{2+} ＋ 2e^- → Yb^0)$. The first reduction of Yb(Ⅲ) showed quasi reversible behavior, but the second reduction was irreversible in cyclic voltammetry. The cathodic peak current showed adsorptive properties in high concentration with lower sweep rate. The electroreduction of heavy lanthanides in water-acetonitrile mixture has been studied. In water-acetonitrile mixture, the negative shift of the peak potential and the decrease peak current were observed increasing water concentration. Also the Yb(Ⅲ) reduction to Yb(Ⅲ) has been deviated from quasi-reversible character with increase water amount. These results drive from the high solvation abilities of water which has high donor number.

• Journal of Fashion Business
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• v.3 no.3
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• pp.1-14
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• 1999

This study is to analyze consumer's visiting fashion trade area. The purpose of this study, focused on Taegu fashion area, Dongsungro and Bum udong, consumer's spatical beravior, fashion- life-style, clothing purchasing type and Store- Image, etc. This study targeted 580 women aged from 15 to 25 visiting fashion trade area. The methods of measuring include consumer behavior scale, fashion life style scale, clothing purchasing type scale and Stor - Image scale. In process of statistics, the frequency was used to measure consumer's spatical behavior, MANOVA to measure, fashion life style and $\chi^2$ examination was employed to measure clothing purchasing type. The followings are the conclusions of this study ; 1. consumer's spatical behavior by FTA(fashion trade area) : Most people visiting Dongsungro A trade area and Bum udong trade area depart home, while Dongsungro B trade area from school. In case of Bum udong trade area, in particular, more people move from other trade area than people do in Dongsungro trade area. 2. Consumer spatical behavior means by FTA : Bus is far most common transportation. 3. The purpose of visit by FTA : Most people visit Dongsungro B trade area for shopping, while Bum udong trade area for shopping and as a place for appointment. 4. The visiting frequency by FTA : In case of both Dongsungro A.B trade area and Bum udong trade area, at least once a week is most common. Particularly in case of Bum udong trade area, the number of people visiting once every three months and once more than six months is almost same. 5. A company by FTA : People accompanied by the same sex friends are most common in Both Dongsungro A, B trade area and Bum udong trade area in case of Dongsungro B trade area. There is no case of people accompanied by family. 6. The purpose of purchasing fashion comodities by FTA : In case of Dongsungro A trade area for recreation. In case of Dongsungro B trade area and Bum udong trade area, because of affordable price. 7. A Brand - pursued tendency by FTA : Much higher in Dongsungro trade area than Bum udong trade area, among consumers. A character - pursued tendency by FTA : Higher in Dongsungro A than Dongsungro B,A practical tendency and symphatetic tendency Higher in Dongsungro B than Dongsungro A or Bum udong trade area. 8. A Store - Image scale by FTA : The quality of goods is more important to consumers in Dongsungro B than to consumers in Dongsungro A. The data - service and atmosphere are much more important to consumers in Dongsungro B than to consumers in Dongsungro A and Bum udong trade area. The convenience is more important to consumers in Dongsungro B Bum udong trade area than to consumers in Dongsungro A. 9. There is no significant difference among clothing purchasing types by FTA.

• The Journal of Korea Robotics Society
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• v.4 no.2
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• pp.81-87
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• 2009

As expanding of service robots into the human life, the needs of robots are increased. The experts group forecasted that the robot market would grow rapidly in a short time, robot companies should compete with others for prior occupation in a market. In this research, we proposed a framework of robot identity design based on building methods of product identity and developed a case study. Identity is one of the strategies to distinguish from competitors through managing image united. It is possible to apply this identity approach on robot area, which was used for making image of companies, brands, and products. In general, identity has visual, invisual features, which can be classified into three elements; Robot Philosophy, Functional Affordance, Family Look. Robot philosophy means the vision or philosophy of a company through robot development, functional affordance is a character or role to serve and family look includes visual design elements like as shape, color, material, graphic, behavior etc. We suggest that this guide will be applied to build identity of following series of a model, models of same service group and all models of a company or commercial space.