• 제목/요약/키워드: Cross-National study

검색결과 4,537건 처리시간 0.035초

3차원 계측장치를 이용한 길 원형의 여유량 분석 (Analysis of the Ease in Basic Bodice Pattern Using 3-D Measuring Instrument)

  • 심규남;서정권;이원자
    • 한국의류산업학회지
    • /
    • 제2권3호
    • /
    • pp.239-245
    • /
    • 2000
  • The purpose of this study was for analysis of ease about basic bodice pattern, as the first step of the research process for the drawing method of basic bodice for women in their twenties. The five selected basic bodice were made and they were worn by FRP body The garment space of each bodice was measured by analysis of the garment space of each section in figure of polymerization of cross section by a 3-D measuring instrument. The research suggests that this compared analysis is an objective reference. This analysis not only of the area of cross section of garment space and ease but also of the girth of the body shape and wearing shape, using the PAD system and 3-D measuring instrument, can be helpful in making garment patterns.

  • PDF

Interior Noise Characteristics in Japanese, Korean and Chinese Subways

  • Soeta, Yoshiharu;Shimokura, Ryota;Jeon, Jin Yong;Lee, Pyoung Jik
    • International Journal of Railway
    • /
    • 제6권3호
    • /
    • pp.120-124
    • /
    • 2013
  • The aim of this study was to clarify the characteristics of interior noise in Japanese, Korean, and Chinese subways. The octave-band noise levels, A-weighted equivalent continuous sound pressure level ($L_{Aeq}$) and parameters extracted from interaural cross-correlation/autocorrelation functions (ACF/IACFs) were analyzed to evaluate the noise inside running train cars quantitatively and qualitatively. The average $L_{Aeq}$ was 72-83 dBA. The IACF/ACF parameters of the noise showed variations in their values, suggesting they are affected by the characteristics of the trains running, wheel-rail interaction, and cross-section of the tunnels.

사례연구를 통한 Cross Site Script 공격 및 방어대책 (A Case Study of Cross Site Script attack and defence measures)

  • 손강원;김지훈;조두산;윤종희
    • 한국정보처리학회:학술대회논문집
    • /
    • 한국정보처리학회 2015년도 춘계학술발표대회
    • /
    • pp.499-500
    • /
    • 2015
  • 최근 인터넷 기술 발전에 따라 웹 시장이 커지고 웹 사이트 범죄가 급증하고 있다. 통계에 따르면 악성코드 주요 전파경로로 웹 사이트가 가장 높은 비율을 차지 할 정도로 조심해야 할 전파경로 중 하나이다. 그 중에서 이 논문은 웹 사이트 관련 공격 기술 중 하나인 크로스 사이트 스트립트(Cross Site Script, XSS)취약점을 알아본다. 먼저 XSS에 대해 알아보고, 실제 공격 예시를 살펴본다. 그리고 XSS를 막기위한 방어대책으로 화이트 리스트와 필터링에 대해 알아본다.

큰줄납자루(Acheilognathus majusculus)와 줄납자루(Acheilognathus yamatsutae) 잡종의 초기생활사 특징 (Early Life History Characteristics of an Induced Hybrid Between Acheilognathus majusculus and Acheilognathus yamatsutae)

  • 박재민;유동재;한경호
    • 한국수산과학회지
    • /
    • 제54권2호
    • /
    • pp.170-179
    • /
    • 2021
  • This study was conducted to identify taxonomic differences in the characteristics of Acheilognathus majusculus and A. yamatsutae during their initial life history via an interspecific hybridization experiment. Hatching time required 36 h for MY and 49 h for YM at 21.5℃, showing a significant difference of 13 h between the hybrids. The hatching rates of the cross-bred eggs were 30% for cross MY (A. majusculus♀×A. yamatsutae♂) and 40% for cross YM (A. yamatsutae♀×A. majusculus♂). The hatching larvae size was total length 3.13-3.43 mm in MY and total length 3.89-4.22 mm in YM, which was larger in YM. The hybridization test between A. yamatsutae and A. majusculus that live in the same water stream confirmed that no interspecific reproductive isolation occurred.

흰줄납줄개(Rhodeus ocellatus)와 줄납자루(Acheilognathus yamatsutae) 잡종의 초기생활사 특징 (Early Life History Characteristics of an Induced Hybrid of Rhodeus ocellatus and Acheilognathus yamatsutae)

  • 박재민;한경호
    • 한국수산과학회지
    • /
    • 제55권2호
    • /
    • pp.137-145
    • /
    • 2022
  • This study was conducted to identify the taxonomic differences in the characteristics of Rhodeus ocellatus and Acheilognathus yamatsutae during their early life history via an interspecific hybridization experiment. Results showed that the hatching rates of the cross-bred eggs were 60% for cross OY (R. ocellatus ♀×A. yamatsutae ♂) and 70% for cross YO (A. yamatsutae ♀×R. ocellatus ♂). The dorsal fin rays of YO were similar to those of R. ocellatus. The hybridization test of A. yamatsutae and R. ocellatus living in the same water stream revealed that no interspecies reproductive isolation occurred. OY and YO showed similar maternal and paternal characteristic. The juvenile of OY did not resemble both paternal and maternal fin rays, indicating a difference. The hatching larvae of the hybrids showed the morphological characteristics of their parents but varied in terms of the shapes of their parts.

Floating Inverter Amplifiers with Enhanced Voltage Gains Employing Cross-Coupled Body Biasing

  • Jae Hoon Shim
    • 센서학회지
    • /
    • 제33권1호
    • /
    • pp.12-17
    • /
    • 2024
  • Floating inverter amplifiers (FIAs) have recently garnered considerable attention owing to their high energy efficiency and inherent resilience to input common-mode voltages and process-voltage-temperature variations. Since the voltage gain of a simple FIA is low, it is typically cascaded or cascoded to achieve a higher voltage gain. However, cascading poses stability concerns in closed-loop applications, while cascoding limits the output swing. This study introduces a gain-enhanced FIA that features cross-coupled body biasing. Through simulations, it is demonstrated that the proposed FIA designed using a 28-nm complementary metal-oxide-semiconductor technology with a 1-V power supply can achieve a high voltage gain (> 90 dB) suitable for dynamic open-loop applications. The proposed FIA can also be used as a closed-loop amplifier by adjusting the amount of positive feedback due to the cross-coupled body biasing. The capability of achieving a high gain with minimum-length devices makes the proposed FIA a promising candidate for low-power, high-speed sensor interface systems.

실용형질이 우수한 녹색 형광실크 형질전환 누에 개발 (Development of the transgenic silkworm producing a improved green fluorescence cocoon)

  • 박옥란;김성완;김성렬;김기영;강석우;구태원;최광호
    • 한국잠사곤충학회지
    • /
    • 제52권2호
    • /
    • pp.117-122
    • /
    • 2014
  • 선행연구를 통하여, 형질전환 누에를 제작하는 원천기술을 개발하고 이를 통해 녹색 형광실크를 생산하는 형질전환 누에를 제작한 바 있다. 본 연구에서는 선행연구에서 개발된 녹색 형광실크 형질전환 누에와 국립농업과 학원이 보유하고 있는 누에 유전자원 중 유색견(絹) 누에품종을 이용하여 형질전환 누에와 유색견 누에품종 간 교차교배를 통한 잡종강세를 이용하여 고치 생산량 및 고치의 색채 등이 향상된 녹색 형광실크 형질전환 누에 1대 잡종(F1) 계통을 개발하였다. 본 연구를 통해 선발된 실용형질이 우수한 농가보급형 녹색 형광실크 형질전환 누에 1대 잡종(F1) 계통은 기존 형질전환 누에의 녹색 형광단백질 뿐 아니라 유색견 누에 특유의 천연 연록색도 함께 갖고 있어 별도의 염색이 필요 없는 차별화된 고급 패션의류나 벽지 등의 고품질 소재로 활용이 가능할 것으로 기대된다.

Characteristics of injuries associated with electric personal mobility devices: a nationwide cross-sectional study in South Korea

  • Kim, Maro;Suh, Dongbum;Lee, Jin Hee;Kwon, Hyuksool;Choi, Yujin;Jeong, Joo;Kim, Sola;Hwang, Soyun;Park, Joong Wan;Jo, You Hwan
    • Journal of Trauma and Injury
    • /
    • 제35권1호
    • /
    • pp.3-11
    • /
    • 2022
  • Purpose: The increasing use of electric personal mobility devices (ePMDs) has been accompanied by an increasing incidence of associated accidents. This study aimed to investigate the characteristics of ePMD-related injuries and their associated factors. Methods: This cross-sectional study was conducted using data from the Emergency Department-based Injury In-depth Surveillance database from 2014 to 2018. All patients who were injured while operating an ePMD were eligible. The primary outcome was the rate of severe injury, defined as an excess mortality ratio-adjusted Injury Severity Score of ≥25. We calculated the adjusted odds ratios (AORs) of outcomes associated with ePMD-related injuries. Results: Of 1,391,980 injured patients, 684 (0.05%) were eligible for inclusion in this study. Their median age was 28 years old, and most injuries were sustained by men (68.0%). The rate of ePMD-related injuries increased from 3.1 injuries per 100,000 population in 2014 to 100.3 per 100,000 population in 2018. A majority of the injuries occurred on the street (32.7%). The most commonly injured area was the head and face (49.6%), and the most common diagnosis was superficial injuries or contusions (32.9%). Being aged 55 years or older (AOR, 3.88; 95% confidence interval, 1.33-11.36) and operating an ePMD while intoxicated (AOR, 2.78; 95% confidence interval, 1.52-5.08) were associated with severe injuries. Conclusions: The number of emergency room visits due to ePMD-related injuries is increasing. Old age and drunk driving are both associated with serious injuries. Active traffic enforcement and safety regulations regarding ePMDs should be implemented to prevent severe injuries caused by ePMD-related accidents.

Study on the Fluence and LET Distribution of Projectile Fragments Produced from Heavy Ion Therapeutic Beams

  • Komori, Masataka;Fukumura, Akifumi;Hirai, Masaaki;Kanai, Tatuaki;Kohno, Ryosuke;Kohno, Toshiyuki;Matsufuji, Naruhiro;Nanbu, Syuya;Nishio, Teiji
    • 한국의학물리학회:학술대회논문집
    • /
    • 한국의학물리학회 2002년도 Proceedings
    • /
    • pp.216-218
    • /
    • 2002
  • Fluence and LET spectrum for 290,400 MeV/u $\^$12/C and 400 MeV/u $\^$20/Ne beams have been measured by a $\Delta$E-E counter telescope. Total charge-changing cross sections are deduced from measured fluence. The measured cross sections agree with previous measurements, however, they are disagreement with a model calculation. To dose-averaged LETs, the model calculation can reproduce the measured LETs except for peak LETs at Bragg peak region.

  • PDF

대구지역 암등록사업의 효율적 수행방안 (The Efficient Methods of Population-based Cancer Registration in Daegu City)

  • 진대구;천병렬;안순기;김종연;감신
    • Journal of Preventive Medicine and Public Health
    • /
    • 제35권4호
    • /
    • pp.322-330
    • /
    • 2002
  • Objective: This study was conducted to automatically improve the completeness and validity of the Daegu Cancer Registry, using cross record linkage of many data sources, and to develop a computerized patient enrollment system for efficient communication among cancer researchers via the internet. Method: We analyzed 10,229 cancer patients who were reported in the National Cancer Registry, and from pathological reports, health insurance cancer claims lists, cancer patient records at hospital information centers and death certificates from the Korea National Statistical Office. Result: We confirmed 4,624 cancer patients and found 897 of new cases from a review of medical chart. The new cases were detected efficiently using cross record linkage. We developed a computerized patient enrollment system, based on a client-sewer model, for the input of cancer patients, and then developed a web-based reporting homepage and patient enrollment system for the internet. Conclusion: This system could manage cancer databases systematically, and could be given to other researchers as a basic database.