• Journal of Biomedical Engineering Research
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• v.18 no.2
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• pp.157-166
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• 1997

Postural balancing in human is known to be maintained by the complex mechanism coupled with cerebellum, equilibrium organ of ear, proprioception and other various organs. We developed a Computerized Balance Evaluation and Training system(COBET system) to evaluate postural control and to rehabilitate geriatrics and disabled patient. In addition, 55 normal adult were tested to investigate the influencing factors on balancing posture. For the analysis of static postural sway, areas of the moving center of pressure were calculated under 8 different positions of subjects. And subjects were also asked to follow the visual targets on monitor for the evaluation of the dynamic postural sway. In comparison of the first and the second sets of tests, there was test-retest reliability($\textit{p}$< 0.05). The controllability of the static pmtwn sway was decreased as the ages of subjects increase. When the ages of subject are over 60, the controllability was significantly decrease4 The dynamic postural sway was significantly greater in the age groups of 7th and 8th decade than the younger groups. It is concluded that COBET system is a reliable system in the evaluation of postural sway. The COBET system is considered to be a valuable training modality for the disabled patients as well as the elderly.

• The Korean Journal of Community Living Science
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• v.21 no.1
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• pp.117-124
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• 2010

Recently, research on variables associated with hair styles are increasing with the spreading of total coordinated intention in the fields of clothing and cosmetology. In the present study, we focused on examining the skin temperature on the scalp(the vertex, temporal, and occiput), humidity on the occiput, skin temperatures (the forehead, back of ear, back of neck, upper back, abdomen, forearm, hand, thigh, calf, and foot), rectal temperature, total body mass loss by hair styles in a thermal neutral environment. Four young females participated as subjects. For a certain period, each subject had the five different hair styles in a random order: (1)Straight short hair(SS), (2)Perm waved short hair(PS), (3) Straight long hair(SL), (4)Perm waved long hair(PL), (5)Ponytail style(PT). Subjects wore briefs, bra, shirts with long sleeves, long legged training pants, and socks. The environmental variables of a climatic chamber were kept constant at $21{\pm}0.5^{\circ}C$ of air temperature and 55${\pm}$5%RH of air humidity. The results indicated the following: The skin temperature and humidity on the scalp did not show any significant differences among five different hair styles, but straight long hair style(SL)was the highest on the vertex, temporal, and occiput. The temporal skin temperature($29.8\sim30.8^{\circ}C$) was the highest, while the vertex skin temperature($28.7\sim30.1^{\circ}C$) was the lowest. Humidity on the occiput was the highest in the perm waved long hair style(PL). The back of ear skin temperature was significantly lower in the ponytail style(PT) than in the other four hair styles(p<.001). In the straight long hair style(SL), the skin temperature on the back of the neck and on the upper back were significantly higher than those of the other four hair styles(p<.01). Mean skin temperature and rectal temperature had no significant differences among hair styles. Total body mass was the highest in the perm waved long hair style(PL)(p<.05). We acquired fundamental data to enable the improvement of the current hair clinic system, wigs, functional hats, and helmets.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.21 no.3
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• pp.162-167
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• 2011

To identify the relationship between types of job classification (typical and atypical) and the levels of recognition of noise and the hearing threshold shift, a total of 457 workers in a cosmetic company were studied utilizing a questionnaire and the audiometric hearing test. The results were analyzed by factor analysis, t-test, and general linear model, as appropriate. The results showed that atypical workers had higher level of noise recognition but had lower levels of hearing ability, noise exposure, and the knowledge on hearing loss prevention, compared with those of typical workers. The high noise level group of typical workers showed higher threshold shift levels than that of atypical workers. Significant differences were found at 4 kHz for both ears and in right ear only for hearing threshold shift after adjusting age.

• Journal of Korea Multimedia Society
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• v.19 no.3
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• pp.557-566
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• 2016

Heart sounds generated by the beating heart and blood flow reflect the turbulence created when the heart valves snap shut. Cardiac diagnosis is typically started by an auscultation using a stethoscope, from which a medical doctor, depending on his hearing capabilities and training, listens and interprets the acoustic signal. This method of diagnostic is uncertain, mostly due to the fact that human ear loses the acoustic frequency sensitivity through the years. Even though an auscultation has some weaknesses like uncertainty, it is considered as a primary tool due to its simplicity. In this paper, heart murmur detection algorithm is proposed using time and frequency characteristics of heart sound. The propose heart murmur detection method adapted conventional primary heart sound detection method in time domain and modified spectral flatness method in frequency domain for detecting heart murmurs. From experimental results, it is confirmed that the proposed algorithm detect the heart murmurs efficiently.

• Archives of Craniofacial Surgery
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• v.15 no.2
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• pp.89-93
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• 2014

Background: To refine facial transplantation techniques and achieve sound results, it is essential to develop a suitable animal model. Rat is a small animal and has many advantages over other animals that have been used as transplantation models. The purpose of this study was to describe a rat hemifacial transplantation model and to verify its convenience and reproducibility. Methods: Animals used in this study were Lewis rats (recipients) and Lewis-Brown Norway rats (donors). Nine transplantations were performed, requiring 18 animals. The hemifacial flap that included the ipsilateral ear was harvested based on the unilateral common carotid artery and external jugular vein and was transferred as a single unit. Cyclosporine A therapy was initiated 24 hours after transplantation and lasted for 2 weeks. Signs of rejection responses were evaluated daily. Results: The mean transplantation time was 1 hour 20 minutes. The anatomy of common carotid artery and external jugular vein was consistent, and the vessel size was appropriate for anastomosis. Six of nine allografts remained good viable without vascular problems at the conclusion of study (postoperative 2 weeks). Conclusion: The rat hemifacial transplantation model is suitable as a standard transplantation training model.

• Journal of Fashion Business
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• v.16 no.6
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• pp.1-20
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• 2012

This study aims to define the influences of an individual's talent types and body consciousness factors on high((intense)-level appearance management behavior in 367 adults(female 172 and male 195). The present study is the first to consider both human talent type and the body consciousness on the high level-appearance management behavior correlates to appearance management behaviour. According to the result of the analysis, plastic surgery on body forms or faces are done by few people. However, straightening teeth, ear piercing, removal of spots or imperfections, and eyebrow tattoos are conducted by many consumers without much resistance. It is rather widely accepted, despite the fact that it can cause pain, discomfort, and side-effects. Furthermore, although excessive acts such as muscle training, dieting, weight managing, and oriental treatments can lead to side-effects, the standardized efficient beta value turned out to be high for these treatments. Thus, this study suggests that both the interpersonal talent among 8 talent factors and 2 body consciousness factors contributes to the reinforcement of the self-identity through high level-appearance management behaviors, but except risky plastic surgery. Therefore, this study supports the previous researches that body consciousness composed of self-source, which is desires and efforts to achieve the ideal body, and external-source, which is the internalization of other people's feedbacks.

• Archives of Craniofacial Surgery
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• v.24 no.4
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• pp.174-178
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• 2023

Background: This study aimed to identify the location of the optic foramen in relation to the anterior sphenoid sinus wall, which is essential information for surgeons in planning and performing endoscopic transnasal surgery. Methods: Computed tomography scans of 200 orbits from 100 adult patients with no abnormalities were examined. The results included the location of the optic foramen in relation to the anterior sphenoid sinus wall and the distance between them, as well as the distance from the optic foramen and the anterior sphenoid sinus wall to the carotid prominence in the posterior sphenoid sinus. Results: The optic foramen was anterior to the anterior sphenoid sinus wall in 48.5% of orbits, and posterior in the remaining 51.5%. The mean distance from the optic foramen to the anterior sphenoid sinus wall was 3.82±1.25 mm. The mean distances from the optic foramen and the anterior sphenoid sinus wall to the carotid prominence were 7.67±1.73 and 7.95±2.53 mm, respectively. Conclusion: The optic foramen was anterior to the anterior wall of the sphenoid sinus in approximately half of the orbits examined in this study, and posterior in the remaining half. The mean distance from the optic foramen to the anterior sphenoid sinus wall of the sphenoid sinus was 3.82±1.25 mm.

• Korean Journal of Cleft Lip And Palate
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• v.15 no.2
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• pp.69-82
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• 2012

Our Team Approach consists of following five stages; (1) Peri-natal care until lip repair After ultrasound diagnosis, some obstetricians recommend the mother with CL/P fetus to undergo prenatal counseling in our CLP clinic. On the day the CL/P baby was born, our oral surgeon, nurse, and pedodontist visit the maternity clinic, and take counseling and take impression for a feeding plate. The cheiloplasty is performed in three months old. (2) From lip repair to palatal repair At one year of age, Otorhinolaryngologist checks middle-ear disease. Palatoplasty is carried out at 1.5 - 2 years old. (3) In deciduous and early mixed dentitions Speech is the most important issue in social life for the CL/P subjects, therefore the training of velopharyngeal function is essential. Orthodontist monitors dentofacial development from 5 years of age. In the case of severe maxillary under-growth or severe collapse, maxillary protractor or lateral expansion is indicative, respectively. In early mixed dentition, upper central incisor on the cleft area erupts with some torsion, and then the traumatic occlusion with tooth torsion must be corrected. (4) In mixed dentition Right before the eruption of upper canines, secondary bone grafting is performed. One year prior to the operation, maxillary fan-type expansion is carried out to correct the collapse of maxillary segments. Following the surgical operation, the erupted canine will be moved into the transplanted bone to avoid alveolar resorption. (5) In permanent dentition Final tooth alignment is carried out after eruption of second molars. Some cases may require orthognathic surgery after physical maturation. Prosthetic oral rehabilitation including the dental-implant is carried out after age eighteen.

• Journal of Navigation and Port Research
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• v.30 no.5 s.111
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• pp.381-387
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• 2006

Recently maritime colleges in Korea have confronted with many difficulties on account of changes of educational circumstance such as increasing the number of low-wage foreign officers on board Korea-registered vessels, weakening international competitive power, avoiding reaction in the field of 3D occupational category etc. Therefore, We are drawing up a efficient educational system cultivating the well-trained marine officers who will take a more active role in the ear of 21C marine revolution The questionnaire was composed of 5 courses-entrance into a school, classwork, campus life, on-board training, choosing occupations and conducted the questionnaire survey of students in Maritime College in Korea Maritime University. And the analysis was carried out to understand the changes of student's consciousness structure and find out the problems of current maritime education system.

• Journal of The Korean Society of Integrative Medicine
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• v.12 no.3
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• pp.83-91
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• 2024

Purpose : This case study aimed to investigate the effects of backward walking exercises with a front-loaded bag on craniovertebral angle (CVA), craniorotational angle (CRA), and gait variables in subjects with forward head posture (FHP). Methods : Two individuals in their twenties with FHP performed backward walking exercises on a treadmill while carrying a front-loaded bag with a load equivalent to 20 % of their body weight, for 30 minutes per day, three times a week, over two weeks. CVA and CRA were measured before and after the intervention using side view photographs taken from 1.5 meters away. CVA was calculated by marking C7, the tragus of the ear, and the outer canthus of the eye, and CRA was determined using the same landmarks. Image J software was used for angle analysis, with measurements taken three times and averaged. Gait variables such as step length and cadence were recorded using a step analysis treadmill and analyzed with the software included with the equipment, with measurements taken at baseline and after the two-week intervention. Results : Both participants demonstrated notable improvements in the CVA, indicating enhanced head alignment relative to the cervical spine. There was also a marked decrease in the CRA, suggesting a reduction in rotational misalignment. Although differences were observed in gait variables, such as step length and cadence, these changes were not consistent across measurements. The results suggest that backward walking exercises with a load carried in front can positively influence postural adjustments by aligning the cervical spine in individuals with FHP. Conclusion : The findings of this case study indicate that backward walking exercises with a front-loaded bag can effectively improve cervical spine alignment in individuals with FHP. Differences were observed in gait variables, such as step length and cadence, but these changes were not consistent across measurements. Future studies should explore these effects more comprehensively and consider optimizing the exercise protocol for better therapeutic outcomes.