• 패션비즈니스
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• 제11권6호
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• pp.24-34
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• 2007

This study aims to suggest basic data for the production of hats for aged women. The subjects were 151 females who are 60 years old or above and live in Busan. Their hat-wearing reality was inquired and their head parts were measured, which led to the following conclusion: 1. Results of Hat-Wearing Reality Inquiry 64.9% answered they are unsatisfied with the size system of the available hats at present, implying the necessity for improving the current dimension system. 92.7% responded hat dimensions need to be subdivided, while 97.4% were for the necessity of hat size system. 74.8% expressed their will to buy ordered hats because they can find the hats of right sizes and designs. 2. Results of Head-Part Measurement Experiments According to head-part measurement, head circumference A was 53.26cm, head circumference B 54.19cm, and head circumference C 57.69cm on the average. Cluster analysis revealed three types. Type 1 (24%) with small head length and circumference is the smallest head with a wide upper part. Type 2 (33%) has long head height, short bitragion arc A, and thick head breadth. Type 3 (43%), owing to big head circumference and length as well as high values in vertical items. Considering head circumference B (HCB) and bitragion arc A (BAA), a new hat size system of 3 sizes (HCB: BAA) was chosen: S (52cm: 29cm), M (53-55cm: 30cm), and L (56-57cm: 31cm).

• 대한기관식도과학회지
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• 제10권2호
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• pp.43-48
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• 2004

Background and Objectives : Globus pharyngeus is the feeling of a lump or foreign body in the throat. Otolaryngologists are often confronted with this condition, and some author reported that it represents 3 percent of all new clinic referral. The purpose of this study is to estimate the incidence of impalpable thyroid lesion in patients with globes pharyngeus and investigate possible association between globus pharyngeus and thyroid lesions. Material and Method : 146 patients with globus pharyngeus and 30 controls were prospectively examined by high resolution ultrasound. Results: Thyroid abnormalities were present in $75/146(51\%)$ patients with globus pharyngeus and in $7/30(23\%)$ controls. Of the patients with globus, 55 patients had a nodule or nodules, 11 patients had a cyst or cysts, 9 patients had diffuse abnormalities. Solitary nodule ranged from 4mm to 20mm. Conclusion : Impalpable, ultrasound detectable thyroid abnormailities are significantly more common in patients with globus pharyngeus than in controls. The thyroid abnormalities may be the cause of globus symptoms in some patients, and high resolution ultrasound is an important modality in patients presenting with globus.

• 항공우주시스템공학회지
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• 제9권2호
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• pp.34-40
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• 2015

Staged combustion cycle engines are well known to have high combustion efficiencies and specific impulse. In this study, design of mixing head part of combustion chamber for 8tonf class staged combustion cycle rocket engine (ES-08) was performed. Structural stability of the mixing head part of the combustion chamber is very important design factor because it is loaded by high temperature and high pressure of fuel and oxidizer as well as by thrust load simultaneously. Uniformity of flow distributions of the propellants to the injectors is also important factor. First, a basic configuration for the ES-08 mixing head part was designed on the basis of the structural design requirements. And then, the structural analyses were performed on the basic configuration as well as some of reinforced configurations. As the structural analyses results, the most stable configuration was selected for the ES-08 mixing head part. In order to examine the uniformity of the flow distributions of the propellants through the manifold of the mixing head, flow analysis was performed based on the selected configuration. The results of the flow analysis showed that the fuel and the oxidizer were uniformly supplied to the injector.

• 간호행정학회지
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• 제15권1호
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• pp.45-53
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• 2009

Purpose: This study was to analyze the relationship between head nurse's leadership, staff nurse's health promotion life style and job satisfaction and nursing work performance. Method: The duration for investigation took place from September 11 to 29, 2006 and 501 staff nurses. Results: Nursing work performance of 3 groups of nurses that group of nurses who evaluated leadership of head nurse is high in authority aspect but is low in harmony aspect(p<.05), group of nurses who evaluated leadership of head nurse is low in authority aspect but is high in harmony aspect(p<.01), and group of nurses who evaluated leadership of head nurse is high both in authority aspect and in harmony aspect(p<.001), was all statistically much higher than group of nurses who evaluated leadership of head nurse is low both in authority aspect and in harmony aspect. Conclusion: nursing work performance of staff nurses are compositively affected by social psychological factor such as job factor, health promotion conduct, and job satisfaction and leadership factor of head nurse.

• 한국치위생학회지
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• 제21권6호
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• pp.813-820
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• 2021

Objectives: This study was conducted to verify the effectiveness of the VR-applied head and neck anatomy class and to be used as basic data for the development of a teaching method using VR in the basic dental hygiene field. Methods: A convenience sample was extracted from 128 students and graduates who completed the head and neck anatomy class at the department of dental hygiene at a university in Gwangju. From June 1 to July 31, 2021, an online survey was conducted on class attitude and satisfaction, and statistical analysis was performed using frequency analysis and independent sample t-test. Results: Class attitude (3.79), interest (3.64), attention (3.88), learning motivation (3.80), and achievement motivation (3.84) were all high in the head and neck anatomy VR application group (p<0.01). Satisfaction (3.99), relevance of class content (4.06) and class achievement (3.96) were high in the head and neck anatomy VR application group (p<0.01). The suitability of class attitude (3.65) and class content (sub-item of class satisfaction) (4.13) was high in the group with the 4th industrial revolution education experience (p<0.05). Conclusions: The effect of VR application in the head and neck anatomy class was confirmed to increase students' class attitude and satisfaction. In the basic dental hygiene curriculum, it will be necessary to develop and utilize teaching methods related to the 4th industrial revolution and VR application classes.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2012년도 제38회 춘계학술대회논문집
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• pp.249-252
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• 2012

7톤급 연소기 헤드부에 대한 구조설계를 수행하였다. 액체로켓엔진 연소기 헤드부는 추진제로 사용되는 산화제와 연료에 의하여 고압의 하중뿐만 아니라 추력 하중을 받기 때문에 구조적인 안정성은 매우 중요한 요소이다. 7톤급 연소기 헤드부 구조설계를 위하여 먼저 구조설계 요구조건을 설정하고, 이를 바탕으로 기본형상을 설계하였다. 구조설계에 사용된 재료는 국내에서 개발된 고강도 스테인리스강을 적용하였다. 설계된 기본형상에서 구조적으로 가장 효과적인 형상을 도출하기 위하여 총 12종류의 해석모델에 대하여 구조해석을 수행하고, 그 결과들로부터 구조적으로 가장 안정한 형상을 선정하였다.

• Journal of Oral Medicine and Pain
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• 제18권2호
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• pp.131-147
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• 1993

To evaluate the contribution of head/neck posture to signs/symptoms of craniomandibular disorder(CMD), the author clinically, cephalo-metrically, analyzed craniomandibular index (CMI), clinical dysfunction index(CDI), occlusal index(OI) and head posture, cervical spine, cervicovertebral anatomy, craniofacial variables from 30 CMD patients and control. And the author analyzed difference between patients and control, and the correlation between CMI, CDI and head posture, cervical spine, cervicovertebral anatomy, craniofacial variables in CMD patients and control. The obtained results were as follows : 1. There was very high significant correlation between CMI and CDI(r=0.8969, p<0.01). 2. There was significant difference between patients and control in head/neck posture, head/neck anatomy(p<0.05). 3. There was significant correlation between CMI, CDI and head posture, cervical spine, cervicovertebral anatomy, craniofacial variables(p<0.05). 4. There was more significant correlation between DI and head/neck posture, head/neck anatomy than between PI and head/neck posture, head/neck anatomy in CMD patients(p<0.05)

• 복식문화연구
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• 제12권6호
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• pp.1021-1030
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• 2004

The purpose of this study was to develop and make the head form by setting the region of the head for detailed measurement of the head to make the type of closely fit hat and typifying the head form of Korean women's with each region of the head based on the measurements of each region of the head according characteristics. A total of 285 Korean women's in the age group of 18 to 35 years old. It were measured through the direct measurement method by selecting 67 measurement items. As a result of the findings obtained from cluster analysis could be classified into 3 type. Type 1($46\%$) is U-shaped form, that is high in head height on sides and circumference is smallest, whose facial region and occiput is flattest of three types. Type 2($22.4\%$) is inverted triangle form, that is flat in head ridge, low in head height on sides and wide in the frontal width. Type 3($31.6\%$) is oval form, that is largest in size, has the projected occiput and is of three-dimensional form.

• The International Journal of Costume Culture
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• 제6권1호
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• pp.52-60
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• 2003

The purpose of this study was to examine the cases of the head family's costume culture and to apply them to field experience education of adolescent's home economics subject. To examine costume culture, women in the two head families in the Hampyeong area, Jeollanam-do were interviewed. The findings had unique shroud making and custom in the Mo's head family of Hampyeong. Also it was found that the eldest daughters-in-law of the Lee's of Hampyeong have horizontally exchanged the information of the head family's costume with village women of the same family. They have initiated their costume culture directly through their daughters and it had the great influence on after-ages. The Spot experience program for adolescent to experience the head family's costume culture and life culture consisted of four subjects:(l)Educating the head family's traditional living culture including etiquette training, (2)head family village walk, (3)experiencing the head family's clothes life including natural dyeing and sewing, and (4)a field trip of Hampyeong Local Life Culture Museum. For a model experience of the head family's costume and life culture, three families with middle and high schoolers participated in 8- hour experience learning program.

• 한국전문물리치료학회지
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• 제14권3호
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• pp.9-15
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• 2007

The purpose of this study was to investigate electromyographic activities of the flexor digitorum superficialis (FDS) and the flexor carpi ulnaris (FCU) by the shape of the ultrasound head. Twelve healthy subjects participated and performed ultrasound therapy with a round head and a long handled head during each 5-minute application. Electromyographic activities of the FDS and FCU were recorded by surface electrodes and normalized by maximal voluntary isometric contraction (MVIC) values. There was no difference in the muscular fatigue of FDS and FCU as determined by the shape of the ultrasound head (p>.05). Without the shape of head, the mean power frequency decreased with the time. There also was no difference in %MVIC of the FDS and FCU as determined by the shape of the ultrasound head (p>.05), but the force exerted exceeded 20%MVIC. There was however a significant difference in the amount of cumulative workload of the FDS and FCU as determined by the shape of ultrasound head (p<.05). The workload was however not affected by the shape of the ultrasound head. Constant static grasp of ultrasound transducer head during ultrasound therapy is considered a high risk factor of work-related musculoskeletal disease.