http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Jihun Kang(Jihun Kang),Taeyun Kim(Taeyun Kim),Kyung-Do Han(Kyung-Do Han),Jin-Hyung Jung(Jin-Hyung Jung),Su-Min Jeong(Su-Min Jeong),Yo Hwan Yeo(Yo Hwan Yeo),Kyuwon Jung(Kyuwon Jung),Hyun Lee(Hyun Lee) 한국역학회 2023 Epidemiology and Health Vol.45 No.-
OBJECTIVES: We examined the associations of socioeconomic factors, health behaviors, and comorbidities with early-onset lung cancer. METHODS: The study included 6,794,287 individuals aged 20-39 years who participated in a Korean national health check-up program from 2009 to 2012. During the follow-up period, 4,684 participants developed lung cancer. Multivariable Cox regression analysis was used to estimate the independent associations of potential risk factors with incident lung cancer. RESULTS: Older age (multivariable hazard ratio [mHR], 1.13; 95% confidence interval [CI], 1.12 to 1.14) and female sex (mHR, 1.62; 95% CI, 1.49 to 1.75) were associated with increased lung cancer risk. Current smoking was also associated with elevated risk (<10 pack-years: mHR, 1.12; 95% CI, 1.01 to 1.24; ≥10 pack-years: mHR, 1.30; 95% CI, 1.18 to 1.45), but past smoking was not. Although mild alcohol consumption (<10 g/day) was associated with lower lung cancer risk (mHR, 0.92; 95% CI, 0.86 to 0.99), heavier alcohol consumption (≥10 g/day) was not. Higher income (highest vs. lowest quartile: mHR, 0.86; 95% CI, 0.78 to 0.94), physical activity for at least 1,500 metabolic equivalent of task-min/wk (vs. non-exercisers: mHR, 0.83; 95% CI, 0.69 to 0.99) and obesity (vs. normal weight: mHR, 0.89; 95% CI, 0.83 to 0.96) were associated with lower lung cancer risk, whereas metabolic syndrome was associated with increased risk (mHR, 1.13; 95% CI, 1.03 to 1.24). CONCLUSIONS: In young adults, age, female sex, smoking, and metabolic syndrome were risk factors for early-onset lung cancer, while high income, physical activity, and obesity displayed protective effects.
Jihun Kang,Young-Shik Yun,Eun-Hye Kang,In-Sik Yun,Jong-Souk Yeo 한국진공학회 2021 한국진공학회 학술발표회초록집 Vol.2021 No.2
Cellular traction forces (CTFs) are essential factors for various cell behaviors. However, previous studies have not completely identified the relationships between cellular traction forces and cell behaviors. Herein, human adipose-derived stem cells (hASCs) were cultured on polyurethane (PUA) nanopillars, and their interactions were observed with a scanning electron microscopy. With the analyses, the individual force of spring-like actomyosin was characterized by calculating CTFs on each nanopillar. Then, the relationships between the forces of actomyosin and cellular behaviors were proposed.
Jihun Kang,Eun-Hye Kang,윤영식,지승묵,윤인식,여종석 한국현미경학회 2020 Applied microscopy Vol.50 No.1
The biocompatible polyurethane acrylate (PUA) nanopillars were fabricated by soft lithography using three different sizes of nanobeads (350, 500, and 1000 nm), and the human adipose-derived stem cells (hASCs) were cultured on the nanopillars. The hASCs and their various behaviors, such as cytoplasmic projections, migration, and morphology, were observed by high resolution images using a scanning electron microscope (SEM). With the accurate analysis by SEM for the controlled sizes of nanopillars, the deflections are observed at pillars fabricated with 350- and 500-nm nanobeads. These high-resolution images could offer crucial information to elucidate the complicated correlations between nanopillars and the cells, such as morphology and cytoplasmic projections.
Kang, Jihun,Yu, Heonchang The Korean Institute of Communications and Informa 2018 Journal of communications and networks Vol.20 No.3
As the size of data increases and computation becomes complicated in fog computing environments, the need for high-performance computation is increasing. One of the most popular ways to improve the performance of a virtual machine (VM) is to allocate a graphic processing unit (GPU) to the VM for supporting general purpose computing on graphic processing unit (GPGPU) operations. The direct pass-through, often used for GPUs in VMs, is popular in the cloud because VMs can use the full functionality of the GPU and experience virtually no performance degradation owing to virtualization. Direct pass-through is very useful for improving the performance of VMs. However, since the GPU usage time is not considered in the VM scheduler that operates based on the central processing unit (CPU) usage time of the VM, the VM performing the GPGPU operation degrades the performance of other VMs. In this paper, we analyze the effect of the VM performing the GPGPU operation (GPGPU-intensive VM) on other VMs through experiments. Then, we propose a method to mitigate the performance degradation of other VMs by dynamically allocating the resource usage time of the VM and preventing the priority preemption of the GPGPU-intensive VM.
Mesh WiFi 와 WiFi Extender 의 커버리지 확장 성능 비교 분석
강지훈(Jihun Kang),임윤섭(Yoonseop Lim),박주하(Juha Park),신원재(Wonjae Shin) 한국통신학회 2022 한국통신학회 학술대회논문집 Vol.2022 No.2
스마트팩토리, 스마트홈에는 넓은 범위의 안정적이고 고품질의 인터넷망 공급이 필요하다. 이를 위해 다양한 WiFi 커버리지 확장방식이 활용된다. 본 논문에서는 대표적인 WiFi 커버리지 확장방식인 WiFi Extender 와 Mesh WiFi 의 이론적 원리와 장단점을 파악한다. 이후 신호강도를 나타내는 RSSI(Received Signal Strength Indicator)와 초당 송수신 가능한 비트의 수를 나타내는 Data Rate 를 지표로 활용하여 두 방식의 성능을 실험적으로 비교 및 분석한다. 실험결과를 통해 결론적으로 신호 품질유지, 연결성, 간편성의 측면에서 Mesh WiFi 가 더 우수한 확장방식임을 검증한다.