• Journal of Animal Science and Technology
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• v.48 no.2
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• pp.331-336
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• 2006

Moving behavior of groups of Hanwoo was observed when solid side was applied along the straight single file chute. Dark blue liners (PVC coated fabric) were hung on the outer side along the steel bars of chute to block vision of cattle. Ten animals were grouped together in a batch to move through chute to the restrainter. Movement of animals through chutes were significantly faster when solid side with liners were applied than when they had open vision of flight zone. And the difference in movement time between of solid side and open side was even greater in a longer chute than in a shorter one. From the experiment with longer chute, we could not find any significant differences between presence or absence of solid sides in the time spent for the leaading cattle to enter the squeeze chute from crowd pen. But the average time spent for movement from squeeze gait to restrainter was 22.78±1.15 seconds with solid sides, which was much shorter than with open sides (40.56±4.46 seconds). Time required for batch of animals to move from crowd pen to restrainter and exit was much faster with solid sides than with open sides: 96.33±3.98 seconds vs. 121.89±5.54 seconds from leading animal to enter the squeeze chute until the last animal of the batch to exit restrainter and 104.56±3.89 vs. 131.22±6.42 seconds for the whole batch of animals to enter the squeeze chute and exit restrainter. Another experiment with shorter chute showed that animals balked to right angled edge of the crowed pen before entering squeeze chute. We could not find any differences in time requred for the leading animal to enter the crowd pen from holding pen. Total time spent from entrance of leading animal to crowd pen until the last animal to exit restrainter was shorter with solid sides than with open sides: 177.44±5.20 seconds vs. 193.44±7.46 seconds.

• Journal of the Korea Society for Simulation
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• v.20 no.4
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• pp.149-155
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• 2011

This paper presents simulations of advance evacuation analysis using a cellular automata model for passenger behavior in an emergency of passenger ship. The proposed cellular automata model divides the space in a uniform grid called "cell." Each passenger is located in a cell and moves to another cell according to a set of local rules assumed to be associated with the individual and crowd behaviors of the passengers. To verify the usefulness of the proposed cellular automata model, 11 tests, all of which are specified in International Maritime Organization Maritime Safety Committee/ Circulation 1238 (IMO MSC/Circ. 1238), were implemented, and it was confirmed that all the requirements of these tests had been met.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.9 no.8
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• pp.2948-2963
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• 2015

In the field of computer vision, visual surveillance systems have recently become an important research topic. Growth in this area is being driven by both the increase in the availability of inexpensive computing devices and image sensors as well as the general inefficiency of manual surveillance and monitoring. In particular, the ultimate goal for many visual surveillance systems is to provide automatic activity recognition for events at a given site. A higher level of understanding of these activities requires certain lower-level computer vision tasks to be performed. So in this paper, we propose an intelligent activity recognition model that uses a structure learning method and a classification method. The structure learning method is provided as a K2-learning algorithm that generates Bayesian networks of causal relationships between sensors for a given activity. The statistical characteristics of the sensor values and the topological characteristics of the generated graphs are learned for each activity, and then a neural network is designed to classify the current activity according to the features extracted from the multiple sensor values that have been collected. Finally, the proposed method is implemented and tested by using PETS2013 benchmark data.

• Korean journal of communication and information
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• v.77
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• pp.137-163
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• 2016

In the early 1900, photography, magic lantern and cinema were simultaneously introduced and experienced until the mid-1910s as mysterious and magical symbol of modern science and technology. The technology of vision, cinema in particular demonstrated its commercially expandable potentials through serial films in the mid-1910s, silent cinema in the 1920s and talkies in 1930s. I argue that a metaphor 'like a movie' which was would be spoken out by peoples as a cliche ever since the late 1910s whenever they encountered something uncanny, mysterious, and looking wholly new phenomena informs how cinematic technology worked in colonial society at the turning point to the early 20th century. Mass in colonial society accepted cinema and other visual technologies not only as an advanced science of the times but as texts of modernity that is the reason why cinema had so quickly taken cultural hegemony over the colony. Until the mid-1920s, discourse on cinema focused not on cinema itself, rather more on the theatre matters such as hygiene, facilities for public use, disturbance, quarrels and fights, theft, and etc. Since the mid-1920s and especially in wartime 1930s, discourses about negative influences and effects of cinema on behavior, mind and spirit of masses, bodily health, morality and crime were articulated and delivered by Japanese authorities and agencies like as police, newspapers and magazines, and collaborate Korean intellectuals. Theories and research reports stemming from disciplines of psychology, sociology, and mass-psychology that emphasized vulnerability and susceptibility of the crowd and mass consumers who would be exposed to visual images, spectacles and strong toxic stimulus in everyday lives. Those negative discourse on influences and effects of cinema was intimately associated with fear of the crowd and mass as well as new technology which does not allow clear understanding about how it works in future. The fact that cinema as a technology of vision could be used as an apparatus of ideology and propaganda stirred up doubts and pessimistic perspectives on cinema influence. Discourse on visual technology cinema constructed under colonial governance is doomed to be technology of mass control for empire's own sake.

• Journal of Korea Multimedia Society
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• v.20 no.2
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• pp.196-204
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• 2017

Behavior of intelligent video surveillance system is recognized by analyzing the pattern of the object of interest by using the frame information of video inputted from the camera and analyzes the behavior. Detection of object's certain behaviors in the crowd has become a critical problem because in the event of terror strikes. Recognition of object's certain behaviors is an important but difficult problem in the area of computer vision. As the realization of big data utilizing machine learning, data mining techniques, the amount of video through the CCTV, Smart-phone and Drone's video has increased dramatically. In this paper, we propose a multiple-sliding window method to recognize the cumulative change as one piece in order to improve the accuracy of the recognition. The experimental results demonstrated the method was robust and efficient learning units in the classification of certain behaviors.

• Journal of the Korean Home Economics Association
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• v.42 no.11
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• pp.31-45
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• 2004

The purpose of this study was to provide basic information about the facility planning to reduce elderly isolation and to improve their rehabilitation ability. Four re%archers observed the using behavior of the elderly residents in the corridor and lounge of 5 facilities. The results of the study were as follows. The using rate of the lounge wis higher than that of the corridor since most of the elderly were controlled by the staffs at the lounge. The facility could decrease the crowd of the lounge by arranging the sofa at the corridor-especially surrounding the atrium. The use rate in the lounge was very dependent on the time of the day, because its use was influenced mainly by daily schedule, and this resoled in it being largely inactive most of the time. A counter plan is needed to encourage natural interaction among the elderly. Individual or small group activities are required in addition to the regular programs. Since the furniture arrangements_(sofas and tables) at the corridor could induce elderly isolation and inactivity, various equipments should be arranged for the self-controlled activities. The indirect participation in the regular activities, which are usually conducted in the lounge, should also be considered in the corridor so that the elderly could observe them at any places.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.9
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• pp.39-49
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• 2020

This study empirically examines herd behavior for fast moving consumer goods (FMCG) sector stocks under varied market return conditions and the period during the global financial crisis and its aftermath. We examine the sample of stocks trading on the Nifty FMCG Index of the Indian equity market from January 2008 up to December 2018 using the dispersion measure of cross sectional absolute deviation and examine its relationship with the market return to explore herd phenomenon. Quantile regression estimate is used and the results of the study validate rational asset pricing models as the sector does not display herding. In contrast, anti-herd behavior at lower and median quantile values is observed. A possible reason can be the non-cyclical nature of the industry where investors rely more on the fundamentals rather than crowd chasing. We also findthe absence of herd phenomenon during the market asymmetries of bull and bear phases, extreme movements, the period of the global financial crisis, and afterward. We further examine herding under the impact of the information technology (IT) industry and conclude that significant return movements in IT sector impact dispersions in the FMCG industry. Also, there is a co-varying risk between the two sectors confirming the spillover in an integrated market.

• Journal of Convergence for Information Technology
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• v.9 no.2
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• pp.165-171
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• 2019

The purpose of this study was to analyse a causal relationship between collective emotion and behavior to sport issues in SNS. For the purpose, 5 sports issues with obvious collective behavior and 5 concerned articles in typical portal sites were selected. From those, each 100 comments with highest recommendation and 5 obvious actions made by the crowd were sampled as the analysis subjects. The results of statistical analyses on collective emotion and behavior materials were as follows. First, collective emotions showed differences by the sports issues. Second, there was a significant causal relationship between collective emotion and behavior in SNS. This study could receive a favorable evaluation due to the statistical analysis on a causal relationship between collective emotion and behavior.

• Journal of the Korea Society of Computer and Information
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• v.26 no.4
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• pp.11-19
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• 2021

An abnormal object refers to a person, an object, or a mechanical device that performs abnormal and unusual behavior and needs observation or supervision. In order to detect this through artificial intelligence algorithm without continuous human intervention, a method of observing the specificity of temporal features using optical flow technique is widely used. In this study, an abnormal situation is identified by learning an algorithm that translates an input image frame to an optical flow image using a Generative Adversarial Network (GAN). In particular, we propose a technique that improves the pre-processing process to exclude unnecessary outliers and the post-processing process to increase the accuracy of identification in the test dataset after learning to improve the performance of the model's abnormal behavior identification. UCSD Pedestrian and UMN Unusual Crowd Activity were used as training datasets to detect abnormal behavior. For the proposed method, the frame-level AUC 0.9450 and EER 0.1317 were shown in the UCSD Ped2 dataset, which shows performance improvement compared to the models in the previous studies.

• Structural Engineering and Mechanics
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• v.66 no.5
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• pp.595-608
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• 2018

This paper deals with the lateral - torsional motion of bridges provided with external cables acting as dampers under the action of horizontal dynamic loads or of walking human crowd loads. A three dimensional analysis is performed for the solution of the bridge models. The theoretical formulation is based on a continuum approach, which has been widely used in the literature to analyze bridges. The resulting equations of the uncoupled motion are solved using the Laplace Transformation, while the case of the coupled motion is solved through the use of the potential energy. Finally, characteristic examples are presented and useful results are obtained.