• Journal of Korean Society of Steel Construction
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• v.24 no.1
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• pp.91-99
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• 2012

In recently, the vibration control of adjacent buildings have been studied and magneto-rheological(MR) fluid dampers have been applied to seismic response control. MR dampers can be controlled with small power supplies and the dynamic range of this damping force is quite large. This MR damper is one of semi-active dampers as a new class of smart dampers. In this study, vibration control effect according to the installation location of the MR damper connected adjacent buildings has been investigated. Adjacent building structures with different natural frequencies were used as example structures. Groundhook control model is applied to determinate control force of MR damper. In this numerical analysis, it has been shown that displacement responses can be effectively controlled as adjacent buildings are connected at roof floors by MR damper. And acceleration responses can be effectively reduced when two buildings are connected at the mid-stories of adjacent buildings by MR damper. Therefore, the installation floor of the MR damper should be selected with seismic response control target.

• KIISE Transactions on Computing Practices
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• v.22 no.11
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• pp.614-618
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• 2016

As information on the internet and the data from smart devices are growing, the amount of stream data is also increasing in the real world. The stream data, which is a potentially large data, requires online learnable models and algorithms. In this paper, we propose a novel class of models: predictive convolutional neural networks to be able to perform online learning. These models are designed to deal with longer patterns as the layers become higher due to layering convolutional operations: detection and max-pooling on the time axis. As a preliminary check of the concept, we chose two-month gathered GPS data sequence as an observation sequence. On learning them with the proposed method, we compared the original sequence and the regenerated sequence from the abstract information of the models. The result shows that the models can encode long-range patterns, and can generate a raw observation sequence within a low error.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2007.06a
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• pp.685-689
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• 2007

Recently, wireless communication technology and state of art miniaturization has enabled the wireless sensor network with Smart Environmental sensors. The sensor network is a new field which has been researched vigorously in the ubiquitous computing and Ad-hoc network. How to efficiently use the limited energy in this USN(Ubiquitous sensor Networks) has been debated recently. We utilized the Directed Diffusion and Gossiping concept which is based on the Large scale Glass greenhouse and present a method to prolong the lifespan of the sensor network by operating variable time based this routing information on the average energy leftover. In this paper, we present a method to minimize the energy consumption of sensor node within Glass greenhouses and ensure a stable network operation at the same time through energy efficient routing among sensor nodes.

• Journal of Korean Association for Spatial Structures
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• v.11 no.2
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• pp.101-110
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• 2011

Many researchers have attempted to apply semi-active control systems in the civil engineering structures. Recently, magneto-rheological(MR) fluid dampers have been developed. This MR damper is one of semi-active dampers as a new class of smart dampers. This paper discusses the application of MR damper for seismic response control of adjacent buildings subjected to earthquake. Here, a controllable damping force of MR damper that is installed between adjacent buildings is applied to seismic response control. A hybrid model combines skyhook and groundhook control algorithm so that the benefits of each can be combined together. In this paper, hybrid control model are applied to the multi degree of freedom system representative of buildings in order to reduce seismic response of adjacent buildings. And the performance of hybrid control model is compared with that of others. It was demonstrated that hybrid control model or adjacent buildings with MR damper was effective for seismic response control of two adjacent buildings reciprocally.

• Journal of the Korean Society of Costume
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• v.59 no.1
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• pp.106-118
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• 2009

This research is about the changes in the images of Bond and Bond Girl in '007' Series. And it examined through the social background of England from 1960s to 2000s and the costume in the film. The results were as follows: As the era of young fashion was opened after 1960, there was a big change, but Bond was expressed as a hero who had strong male chauvinism of the English aristocratic circles. However, after 1990s, he wore comfortable clothes and he underwent all sorts of hardships. On the other hand, Bond Girl had the image of a sexual target. However, after 1990s, she had sharp appearance and smart brain. Besides, she had professional ideas of a given work and she was changed into a healthy image. Second, Bond's job was an English secrete agent, but Bond Girl had no particular job in 1960s. In 1980s, various professional jobs appeared and in 1990s and 2000s, the professional job which was directly related with Bond's duties appeared. Third, Bond's upper class image was expressed by tuxedo, suit, black, gray, navy, beige, brown, and ivory. His hair was 2:8 parting or Dandy all black style produced his dignified and neat image. After 1990s, he often had casual dress, which created a comfortable image. Bond Girl was expressed feminine style by bikini, underwear, long dress, sky-blue, violet, black, simple costume. After 1990s, she wore a suite, one-piece, or a combat uniform, which showed her professionalism. especially Bond Girl's red dress was used as a psychological color to express temptation, enemy, and betray.

• The Korean Journal of Food And Nutrition
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• v.29 no.6
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• pp.911-922
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• 2016

This study was conducted to assess the recognition and consumption of meal alone and processed food according to major of college students in Seoul Metropolitan area and Chungcheong province, Republic of Korea. To accomplish this, a survey was conducted to investigate 353 college students (171 food & nutrition majors and 182 non-majors) regarding their general characteristics, dietary behaviors, meal alone issues, and the purchase and consumption of processed food. Most major and non-major students skipped breakfast. The main reason for skipping was not having time. Majors and non-majors put great importance on their lunch and evening meal, respectively. Nutrition information routes for majors were 'college class' (62.5%) and 'TV radio' (17.5%). However, the routes for non-majors to obtain nutrition information were 'internet smart phones' (41.1%) and 'TV radio' (28.3%). These results suggest the need to provide correct information concerning nutrition to college students. Most major and non-major students tend to have 0 to 2 times of meal alone per week. The main reason for meal alone was schedule unsuitable for eating with family or friends. The most critical factors for majors and non-majors when they chose menu to have meal alone were personal taste and money, respectively. The primary consideration for choosing processed food was price and the main purchase route was convenience store. The main reason for consuming processed food was easy-to-cook. Of processed foods, the most favored ones were noodles and fish products. Meal alone frequency was positively correlated with age (p<0.05), grade (p<0.05) and monthly allowance (p<0.05). Preference and consumption frequency of processed food were negatively correlated with concern about nutrition (p<0.05) and meal frequency (p<0.05), respectively. Based on these results, greater efforts should be made to provide meaningful information regarding programs for nutrition education to improve their dietary habits. Research and development of processed food specifically for college students eating alone should be increased.

• Convergence Security Journal
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• v.15 no.4
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• pp.113-119
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• 2015

Recent, cyber violence is increasing in a school and the severity of the problems encountered day by day. In particular, the severity of the cyber force using the smart phone is recognized as a very high and great problems socially. Cyberbullying have long damage degree and a wide range time duration against of existed physical cyber violence. Then student's affects is very seriously. Therefore, we analyzes the relationship and languages in the classroom for students to use to identify signs of cyber violence that may occur between friends in the class. And we support this information to identified parent, classroom teachers and school sheriff for prevent cyberbullying accidents in the school. For this research, we will design and implement a messenger in the cyber classroom. It have many components that are Big-data vocabulary, analyzer, and communication interface. Our proposed messenger can analyze lingual sign and friendship between students using Big-data analysis method such as text mining. It can analysis relationship by per-student, per-classroom.

• The Journal of the Korea Contents Association
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• v.12 no.1
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• pp.9-16
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• 2012

Though Android-based smart phones are being released in Korea, Korean TTS engine is not built on them and Google has not announced service or software developer's kit related to Korean TTS officially. Thus, application developers who want to include Korean TTS capability in their application have difficulties. In this paper, we design and implement Android OS-based Korean TTS system and service. For speed, text preprocessing and synthesis libraries are implemented using Android NDK. By using Java's thread mechanism and the AudioTrack class, the response time of TTS is minimized. For the test of implemented service, an application that reads incoming SMS is developed. The test shows that synthesized speech are generated in real-time for random sentences. By using the implemented Korean TTS service, Android application developers can transmit information easily through voice. Korean TTS service proposed and implemented in this paper overcomes shortcomings of the existing restrictive synthesis methods and provides the benefit for application developers and users.

• Journal of Science Education
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• v.40 no.1
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• pp.52-71
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• 2016

The purpose of this study is to analyze the learning activities which use asexual reproduction learning application(app) of students with special needs through the Cultural Historical Activity(CHAT). The asexual reproduction learning app was developed for students with special needs, and analyzed the learning activities of students with special needs in perspective of CHAT. The app was developed as subsidiary study material for asexual reproduction inquiry learning. Main functions of the app were composed of concept learning, problem solving, video playing, and report writing. According the CHAT analysis, findings indicated that students with special needs as the subject were able to organize division of labor demonstrated in cooperative learning with the object to actively participate in the class by using the tool of an app. This study also showed effective teaching strategy for improvement of learning achievement and task behavior level of student with special needs.

• Journal of Korea Game Society
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• v.17 no.2
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• pp.145-154
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• 2017

In the age of low fertility and aging society, youth suicide is not the problem of a certain class but it should be recognized as an urgent and important social problem to be solved by our society. We aim to support the training of youth gatekeeper who can acquire the right attitude and understanding of suicide for adolescents, detect premature suicide signs of peer friends and link them to specialized institutions. In this paper, we propose a scenario based learning program that is linked to the concrete situation that the young people can sympathize with and a serious educational game of visual novel type that encourages participation of youth. We expect that the proposed serious game will improve the accessibility of educational facilities and youths through smart devices.