• The Journal of Korean Institute of Communications and Information Sciences
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• v.30 no.9C
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• pp.887-898
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• 2005

In this paper, we introduce a probabilistic model based on Bayesian networks BNs) for recognizing human fatigue. First of all, we measured face feature information such as eyelid movement, gaze, head movement, and facial expression by IR illumination. But, an individual face feature information does not provide enough information to determine human fatigue. Therefore in this paper, a Bayesian network model was constructed to fuse as many as possible fatigue cause parameters and face feature information for probabilistic inferring human fatigue. The MSBNX simulation result ending a 0.95 BN fatigue index threshold. As a result of the experiment, when comparisons are inferred BN fatigue index and the TOVA response time, there is a mutual correlation and from this information we can conclude that this method is very effective at recognizing a human fatigue.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.19 no.4
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• pp.701-711
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• 1994

In this paper, we design wavelet matched filters using Wavelet Transform available in the field of time-frequency analysis, for the optical patter recognition, and study optical correlation properites according to variations of the dilation factor of wavelet functions, which were compared with conventional matched filter and POF. We have found that the wavelet matched filters depend upon the shapes if used input patterns and dilation factors of the wavelet function in order to have the best dicriminability. Also, we show the edge enhanced effects of 2-D image, which is one of the properities of the wavelet transform. If has been found that the wavelet matched filter can discriminate better than the conventional matched filter and POF owing to their bandpass properties, and found that the proposed wavelet matched filters have more sensitive correlation response than POF.

• Journal of the Korea institute for structural maintenance and inspection
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• v.6 no.2
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• pp.121-126
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• 2002

Due to few earthquakes in our country, one generally has thought to be safe from earthquakes. However, severe earthquakes occurred in Dangsan and Hyogohyeon which one had regarded as the zone that had not been risky for earthquakes, so that so many people died and a lot of buildings and bridges were destroyed. This event surprised our country and we undertook preparation for earthquakes on the full scale. The concept of seismic design was induced in the country which was poor in it for the scarcity of recognition and insufficiency of funds. Recently, many specialists are enforcing the provisions of seismic design. Therefore, this study introduces the method which combines PC-LEADeR( design program for L.R.B.) with LUSAS(linear elastic analysis) and performs the seismic isolation design more elaborately and simply. It verifies the propriety of that method, and it also examine the factors that affect the response of the bridges. Seismic isolation design for bridge using L.R.B. provides both economical efficiency and superior seismic performance. Second, the results between by the method proposed and by time history analysis have 20% error at the maximum. That is, the method proposed very appropriate.

• The Journal of Dong Guk Oriental Medicine
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• v.5
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• pp.15-31
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• 1996

The purpose of this study was to generalize the conception of chronic pelvic pain(CPP)through the literature of oriental medicine and occidental medicine. The results are obtained as follows. First, chronic pelvic pain(pain of more than 6 months duration) may include pain of gynecologic, gastroenterologic, urologic, neurologic, and musculoskeletal origin. In this study, the etiology of chronic pelvic pain may remain obscure and the relationship between certain types of pathology, such as endometriosis or adhesions, and the pain response may be inconsistent and often inexplicable. Second, the causes of CPP through the literature of oriental medicine were reviewed as pains due to a wind-pathogen, a cold, disorder of Qi, disorder of blood stasis, a improper diet, disorder of fluid, and deficiency type etc... And the charateristic pains were concerned with a aching pain, a heavy pain, a distending pain. a pain due to mass in the abdoman, a pain likes pulling etc... The degree and classification of charateristic pains in current of time were dependent on subjective factors. Third. in oriental medicine, it wasn't to be suggested concretely recognition of etiological factor in pain. But they recognised that facters were influenced by pain. For example, diretic peripheral demages were concerned with a blood stasis, a phlegm, a damp phlegm, heart, and the pains that were occurrenced by sevn emotions were concerned with a stagnancy of Qi or a stagnancy of liver-Qi.

• The Journal of the Korea institute of electronic communication sciences
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• v.13 no.6
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• pp.1281-1286
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• 2018

The sea cucumber, which is distributed over 1,500 species worldwide, is a highly value-added variety that has been considered an important source of marine resources in many countries for a long period of time. Most of the research on sea cucumbers involves the effectiveness of food and its extractions; however, there was no research on the extraction of sea cucumbers. In response, this research suggested a boundary detection algorithm to extract the special spot of sea cucumbers Therefore, in order to capture a large quantity of high value-added in sea cucumbers and we believe that they will be a great help to the sea cucumber recognition program in the future.

• Textile Coloration and Finishing
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• v.32 no.4
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• pp.185-192
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• 2020

A novel binding site for metal ion made by designing molecule with tetrazolo quinoline with hydrazine carboxamide (TQC) and the designed molecule successfully synthesized. The probe works by selectively detecting Al3+ ion via both fluorimetric and colorimetric approach. The probe's effectiveness towards aluminium ion detection is highly sensitive and selective with no substantial interference with other competing ions. The added Al3+ ion to TQC fetched a rapid change of visual color to yellow from colorless, also the response of fluorescence turn-on. The fluorescence turn-on and color change visibly by the probe TQC with Al3+ ion credited to the ICT phenomenon (intramolecular charge-transfer transition). The likely interaction of the probe with aluminium ion has also been there predicted from ESI-MS spectral analysis results. The usefulness of the probe confirmed by practical utility by making a test kit to monitor Al3+ ion in water which showed a naked eye detection by notable color change.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.4 no.2
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• pp.108-113
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• 2003

Research results have demonstrated that conventional client-server databases have scalability problem in the presence of many concurrent clients. The multi-tier architecture that exploits similarities in clients' object access behavior partitions clients into logical clusters according to their object request pattern. As a result, object requests that are served inside the clusters, server load and request response time can be optimized. Management of clustering by utilizing clients' access pattern-based is an important component for the system's goal. Off-line methods optimizes the quality of the global clustering, the necessary cost and clustering schedule needs to be considered and planned carefully in respect of stable system's performance. In this paper, we propose methods that detect changes in access behavior and optimize system configuration in real time. Finally this paper demonstrates the effectiveness of on-line change detection and results of experimental investigation concerning reconfiguration.

• Journal of Korean Society of Transportation
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• v.24 no.6 s.92
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• pp.21-32
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• 2006

The purpose of this study is to determine the economical standard for road signs by verifying the difference in driver's legibility time with respect to the spacing of letters on the toad signs. Laboratory simulations were conducted to confirm the difference in legibility time for six target signs of different spacing. Also. a binary logit model was used to find the main factors, which could lower the rate if misreading. This model involves not only a simple enlargement of signs but also a suitable match of letters and signs along with the optimal spacing of the text letters on the road signs to increase the legibility of the sign. The result of this study verified the importance of spacing in road signs and Proved itself to be an effective method to determine the future standard for the road signs.

• Journal of Korean Society of Transportation
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• v.29 no.3
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• pp.115-122
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• 2011

This paper investigates the accuracy of the vehicle pre-braking speed estimated based upon measured skidding distance. Driver ordinarily takes sudden braking when urgent situation is developed in the front or when the driver is involved in an unexpected situation, and the driver may be inflicted upon an accident depending on the required stopping distance. Among factors influencing the stopping distance of vehicle such as recognition response time of driver, performance of vehicle's braking device, and state of road surface etc, pre-braking speed is seemingly the most important influencing factor. Currently, in the investigating section of traffic accidents, the state of overspeed is determined by the pre-skidding speed calculated based on the length of skid mark. In order to identify the accurate cause of the accident, it is strongly recommended that estimation of pre-braking speed should be estimated taking into account speed reduction during transient time. In this study, we propose a method for estimating more accurate exact speed information of vehicle at the time of traffic accident. The outcomes from this study potentially help better understanding of the characteristics of vehicle for traffic safety in the future.

• Journal of Korean Public Health Nursing
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• v.12 no.2
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• pp.236-251
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• 1998

This study aimed at comprehending the meaning of sexual life for aged people, their strength of sexual desire and causes of change in their sexual life. It was another purpose to understand the extent of aged people's acknowledging the necessity of sexual consultation. This study adopted descriptive method using open-ended questionaires. The data for study was collected from 26 people over 65 years who reside in communities. It was gathered from April to June of 1998 through interview. The interviewee includes 16 males, 9 females and their average age was 73.3. 19 people among them have spouses. The conclusion of this study can be summarized as follows. 1) Attitude to sexual life: The meaning of sexual life for aged people is categorized as 'sense of duty', 'feeling of intimacy', 'basic desire', 'decrease of meaning' and 'meaningless'. 2) Sexual desire: Sexual desire of aged people is categorized as 'extinction', 'decrease', 'continuation' and 'restraint'. Restraint of sexual desire is due to social convention or the difficulty in fulfilling desire. 3) Causes of troubles in sexual life Causes which lead to troubles in sexual life of aged people can be categorized as 'physical', 'psychological' and 'social'. 'Physical' elements include 'incompetence of erection', 'decrease in duration of erection', 'increase in time needed to re-erection', 'declining of physical strength', 'decrease in vagina secretion' and 'worsening of health'. Among 'psychological' elements 'decrease of self-confidence', 'diminished concern of female aged people' are. 'Social elements' are 'absence of sexual parter', 'circumstances of living' and 'recognition of neighbor'. 4) Response to change of sexual life The reaction of aged people to change of sexual activities is classified as 'positive' and 'negative'. 5) Attitude to the consultation of sexual life of aged people The attitude to the consultation of sexual life in old age is classified as 'negative', 'doubtful' and 'positive'. This study explored the meaning which aged people in community attach to sexual life, the extent of their sexual desire, the causes of troubles in their sexual life, their emotional response to changes in sexual life, their recognition of necessity in sexual consultation. Considering the frequency of the statement, most of aged people who were interviewed thought much of sexual life and put emphasis on it. Those who said that sexual life has decreased meaning or is not important to them are few, Though aged people still maintain sexual desire, most of them have some trouble in sexual life. These trouble changes the sexual life, and results in negative feeling such as depression, renunciation and difficulty in relations. So they acknowledged that sexual consultation is necessary to them.