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A Study on Estimation of Gait Acceleration Signal Using Gait Video Signal in Wearable Device (걸음걸이 비디오를 활용한 웨어러블 기기 사용자 걸음걸이 가속도 신호 추정)

  • Lee, Duhyeong;Choi, Wonsuk;Lee, Dong Hoon
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.27 no.6
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    • pp.1405-1417
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    • 2017
  • Researches that apply the acceleration signal due to user's gait measured at the wearable device to the authentication technology are being introduced recently. The gait acceleration signal based authentication technologies introduced so far have assumed that an attacker can obtain a user's gait acceleration signal only by attaching accelerometer directly to user's body. And the practical attack method for gait acceleration signal based authentication technology is mimic attack and it uses a person whose physical condition is similar to the victim or identifies the gait characteristics through the video of the gait of the victim. However, mimic attack is not effective and attack success rate is also very low, so it is not considered a serious threat. In this paper, we propose Video Gait attack as a new attack method for gait acceleration signal based authentication technology. It is possible to know the position of the wearable device from the user's gait video signal and generate a signal that is very similar to the accelerometer's signal using dynamic equation. We compare the user's gait acceleration signal and the signal that is calculated from video of user's gait and dynamic equation with experiment data collected from eight subjects.

Evaluation of Thermal Insulation and Hypothermia for Development of Life Raft (해상 구명정의 단열성능평가 및 저체온증 예측 수치해석 연구)

  • Hwang, Se-Yun;Jang, Ho-Sang;Kim, Kyung-Woo;Lee, Jang-Hyun
    • Journal of Navigation and Port Research
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    • v.39 no.6
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    • pp.485-491
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    • 2015
  • The technology review about risk of hypothermia of victim according to heat transfer characteristic of life raft and sea state can use accident correspondence of standing and sinking of ship. This study studied heat transfer characteristics required for the design of life raft and thermal insulation property analysis and evaluation methods. In addition, it is study for comprehend the risk of hypothermia and suggest analysis result that is experiment of thermal insulation property and body temperature property for decide of prediction the body temperature decline Thermal Analysis apply the finite element analysis method is comprehended the property of heat conductivity, convective effect of sea water and properties changes according to property of insulation material. it measure the heat flux with attach temperature sensor on body in order to comprehend the variation of body temperature with boarding a life raft experiment on a human body. This study validate results by comparing variation of temperature measured from experiment on a body with variation of temperature from finite element analysis model. Also, the criteria of hypothermia was discussed through result of finite element analysis.

Comparison of the Health Behaviors according to Income and Education Level among Cardio-Cerebrovascular Patients; based on KNHANES data of 2010-2011 (심뇌혈관질환자의 소득과 교육수준에 따른 건강행태 비교 - 2010-2011년도 국민건강영양조사 자료를 이용하여 -)

  • Choi, Ji-Yeon;Choi, Seong-Woo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.10
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    • pp.6223-6233
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    • 2014
  • The aim of this study was to help disease management and prevention by analyzing the effects of income and education levels on the health of cardio-cerebrovascular patients. Using the raw data of 2010-2011 Korea Health & Nutrition Examination Survey, the correlations of health behaviors, general (socio-demographic) characteristics, body measurements, and blood test results of 3,687 cardio-cerebrovascular patients aged 30 or older were analyzed based on their income and education levels. The results suggested that lower income and education levels were correlated with a high prevalence of cardio-cerebrovascular diseases. In addition, the OR values (95% CI) of current smoking were 0.71 (0.52-0.96) for patients with a high-income and 0.41 (0.29-0.58) for those with a high level of education, showing a strong correlation between lower levels of income and education and current smoking, which is related to health deterioration. In terms of one-month drinking and high risk drinking, the OR values (95% CI) of the patients with a high income were 1.55(1.22-1.95) and 1.42(1.11-1.82), respectively. Drinking was more prevalent among high-income patients but had no correlation with the education level. The practice of walking had no significant correlation with both income and education levels. Therefore, it is imperative to emphasize the importance of temperance to high-income patients, and the importance of quitting smoking to low-income patients, as well as to provide institutional support.

The Study on Risk Factor of Metabolic Diseases in Pancreatic Steatosis (췌장지방증에서 대사성질환의 위험 요인에 관한 연구)

  • Cho, Jin-Young;Ye, Soo-Young;Kim, Dong-Hyun
    • Journal of radiological science and technology
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    • v.39 no.1
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    • pp.81-88
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    • 2016
  • The body of the fat tissue increased in obese represented by risk factors such as cardiovascular diseases, diabetes, metabolic disease and dyslipidemia. Such metabolic diseases and the like of the cardiovascular and cerebrovascular disease, hypertension, dyslipidemia, increase in the adipose tissue of the pancreas is known to be a risk factor of these diseases. Study on the diagnosis and treatment of pancreatic cancer was conducted actively, case studies on pancreatic steatosis is not much. In this study, divided into a control group diagnosed with pancreatic steatosis as a result of ultrasonography to evaluation the physical characteristics and serologic tests and blood pressure and arterial stiffness. The control group and the test pancreas steatosis age and waist circumference, body mass index, total cholesterol, HDL cholesterol, LDL cholesterol, and systolic and diastolic blood pressure, fasting blood glucose, arterial elasticity is higher in pancreatic steatosis. And the lower ankle brachial stenosis and HDL-cholesterol were lower than the normal control group, so the pancreatic steatosis harmful to blood vessels.(P <0.05). The difference between the control group and it was confirmed that the pancreatic jibanggun statistically significant. In conclusion, pancreatic steatosis at abdominal ultrasound can predict the risk of metabolic diseases, and there was a correlation with cardiovascular disease.

Cervical Paraganglioma Originated from Lingual Vein in a Boston Terrier Dog (보스턴 테리어에서 발생한 혀정맥 유래 목부위 곁신경절종 증례)

  • Jang, Hyo-Mi;Lee, Hee-Chun;Choi, Eul-Soo;Sur, Jung-Hyang;Jung, Dong-In
    • Journal of Veterinary Clinics
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    • v.32 no.6
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    • pp.508-510
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    • 2015
  • A 7-year-old castrated male Boston terrier dog was referred due to dyspnea and unilateral cervical mass. On physical examination, mass on left submandibular region was palpated. CT findings revealed this case could be the tumor originated from left lingual vein. The client refused further treatment and the patient expired because of respiratory failure 10 days after presentation. On necropsy, a well-defined firm mass which located in the left side of larynx was detected. Histopathological findings for the mass indicated polygonal tumor cells arranged in nest and separated by fibrovascular septa. We performed immunohistochemisry to evaluate of chromogranin A and tumor cells showed positive immunoreactivity for chromogranin A. Based on computed tomography (CT), histopathological and immunohistochemical findings, this case was definitely diagnosed to paraganglioma of the body on the lingual vein. This report describes the clinical findings, CT imaging characteristics, histopathologic and immunohistochemical features of paraganglioma arised from lingual vein in a dog.

A Case of Nasal Cryptococcosis in a Domestic Shorthair Cat (코리안 쇼트헤어 고양이에서 발생한 크립토코쿠스 감염증 의심 1증례)

  • Lee, Jin Soo;Kim, Hyun Wook;Choi, Ul Soo
    • Journal of Veterinary Clinics
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    • v.30 no.2
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    • pp.115-118
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    • 2013
  • An 8-year-old spayed female domestic shorthair cat was presented with a chief complaint of chronic nasal discharge and dyspnea. Physical examination revealed pyohemorrhagic nasal discharge, inspiratory dyspnea and stertor, and an enlarged right mandibular lymph node. Abnormalities of blood works and serum chemistry included mildly increased hematocrit, and globulin concentration. Serologic tests for FeLV and FIV, and a panel of polymerase chain reaction tests for Chlamydophila felis, Feline Calicivirus, Herpesvirus, Bordetella, Mycoplasma felis, and H1N1 influenza was all negative. Only radiographic finding showed increasing soft tissue density in the right nasal cavity and computed tomography disclosed soft tissue/fluid opacification in the right nasal cavity, paranasal sinus, and pharyinx along with slight deviation to the right of the osseous nasal septum. Focal lysis of ventral nasal septum was also suspected in CT scan. Cytological evaluation of fine needle aspirate smears of the enlarged mandibular lymph nodes revealed numerous fungal yeasts having variably thick capsule both extracellularly and intracellularly with low numbers of macrophages. Some yeasts showed narrow based budding, which was a consistent finding with Cryptococcus organisms. Serum protein electrophoresis was a polyclonal consistent with chronic infection and serum was submitted for a fungal serology panel test. In serologic tests Cryptococcus antigen titer was 1 : 32,768. In vitro culture was unsuccessful. Treatment was initiated with administration of fluconazole, clindamycin, and tocopherol. Clinical signs resolved within 3 days after the initial treatment. The cat was discharged and scheduled for periodic evaluation and continued therapy, but was lost to follow-up thereafter.

The Effect of Antifat Diets with β-Cyclodextrin on the Weight Loss in Obese Korean Women (비만 여성에서 베타-사이클로덱스트린 함유 다이어트 식품의 체중 감소 효과)

  • 박병성
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.33 no.5
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    • pp.832-838
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    • 2004
  • This study investigated the effects of an antifat diet with $\beta$-cyclodextrin on the reduction of body weight, obesity index, body mass index, body fat mass, body circumferences and plasma lipid levels in obese Korean women. After maintaining an antifat diet for 45 days, there were significant reductions in body weight by 4 kg, obesity index by 5%, body mass index by 1 kg/$m^2$ and body fat mass by 7% as absolute values (p<0.05). When expressed as percentages of the decrease, these reductions remained significant at 4%, 13%, 4% and 20%, respectively (p<0.05). In addition, after maintaining this antifat diet for 45 days, there were also significant reductions in arm, waist, hip and thigh circumferences by 3 cm as absolute values when compared to before intake of antifat diet, and these reductions remained significant at 8%, 3.4%, 3% and 5%, respectively (p<0.05) as percentages of the decrease. Furthermore, this antifat diet significantly reduced triacylglyceride by 103 mg/dL, total cholesterol by 50 mg/dL and LDL-C by 50 mg/dL respectively (p<0.05). Thus, the present results demonstrate that $\beta$-cyclodextrin may have benefit as a novel food resource for diets to prevent obesity and control overweight in adult women.

A Study on School Uniform Modification According to Lifestyle in High School Girls (여고생의 라이프스타일에 따른 교복변형행동 비교)

  • Wee, Eun-Hah
    • Journal of Korean Home Economics Education Association
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    • v.20 no.3
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    • pp.201-213
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    • 2008
  • This study was intended to examine the relationship between lifestyle and school uniform design modification in high school girls and provide basic data for guidance in the wearing of school uniform. The subjects of this study were 585 girls who were in the first and second grades of high schools throughout Gwangju. This study was executed using a questionnaire. The data from this study was processed using SPSS WIN 12.0(Kr). The results were as follows; This study hypothesized that the perception and attitude on school uniform modification would be significantly difference depending on lifestyles in high school girls. The significant differences appeared in a few items. So the results suggested that school uniform modification was a common that appeared in most high school girls. However it was affected by their lifestyle. specifically, a digital-dependence lifestyle group has a few different perceptions and attitudes on school uniform modification than the others. In other words, school uniform modification in high school girls who spend their most time in school is a general and universal clothing behavior by psychological factors rather than the effect of lifestyle. It is considered that rules concerning school uniform modification should allow students to express their individuality within certain limits. Teachers should instruct students to wear appropriate underwear rather than keep students under control with a fixed set of rules. If High school girls have a negative body image as a result of their exposed body, they should receive active educational guidance.

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Nietzsche in the Square of Carlos Alberto (카를로스 알베르토 광장의 니체)

  • Lee, Wang-joo
    • Journal of Korean Philosophical Society
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    • v.142
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    • pp.221-241
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    • 2017
  • I try to elucidate the essence of cinematic art in terms of Nietzsche's physiological philosophy of art. According to Nietzsche, the mise-en-$sc{\grave{e}}nes$ in the film are expressions of willingness to the power of the author, the director. These are not re-imitations of the imitations with Platonic measure, sinker, number, but framing the elan vital Erde, die $urspr{\ddot{u}}ngliche$ Vorstellung with the director's body-camera. In this context, the film is essentially die Kunst des Lebens, in which the body and the earth are mediated by cameras. Therefore, it is not the eyes or the head, but the body that is necessary to appreciate film art. But the body at this time does not mean the heavy body of Hollywood standard audiences manipulated, controlled, or transformed by capital. We should stand in front of the film work with body shaking between trauma and Rausch, a dancing body, and a light and fresh body. Only by watching film with the body, can we achieve the small revolutions in everyday life. For example, if we watch $B{\acute{e}}la$ Tarr's film The Turin Horse in such a way, we can no longer be the dwarfed human beings, der Herde-Mensch. Also, $B{\acute{e}}la$ Tarr's mise-en-scene will make us realize why Nietzsche had said that there is art to us not to be destroyed by the platonic truth.

The Effect of Jeju Wild Ginseng Extracts on Skin Barrier via Serine-Palmitoyltransferase (제주산양산삼이 세린-팔미토일 전이효소(Serine-Palmitoyltransferase)를 통해 피부 장벽에 미치는 효과에 대한 연구)

  • Kim, Hyo Min;Lee, Jung No;Kim, Jae Moon;Kim, Sung Kyu;Park, Sung-Min
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.42 no.2
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    • pp.119-126
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    • 2016
  • Skin is the largest organ that protects the body from the external environmental factors such as smog, cigarette smoke, UV. Protective skin barrier is composed with keratinizational keratinocytes and intercellular lipids such as ceramides, cholesterols and fatty acids combined by the lamellar liquid crystal structure. In this research, we confirmed that the Jeju wild ginseng (JWG) extracts dose-dependently increased the expression of serine-palmitoyltransferase (SPT) protein which is associated with ceramide biosynthesis. In addition, emulsion containing 5% JWG extract was applied on skin of human volunteers for 2 weeks and then significantly reduced transepidermal water loss (TEWL) compared to that of control group. As a results, JWG extract increased the biosynthesis of ceramides that is the key components of the skin lipid through enhancing expression of SPT. In addition, JWG extract reduced TEWL resulting in improvement of skin barrier function. In this context, we suggest that JWG extract could be used as a skin barrier enhancer and moisturing agents in cosmetic fileds.