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Taehee Pyeon,Jeong-Yeon Hwang,Sungmin Kim,Hong-Beom Bae,Joungmin Kim 조선대학교 의학연구원 2019 Medical Bilogical Science and Engineering Vol.2 No.1
Humidification of inhaled gases has been standard of care in mechanical ventilation recently. Heat and moisture exchange is one of the most important functions of the upper respiratory system. The warming and humidification function through the upper airway disappears when mechanical ventilation with endotracheal intubation. An active humidification system is often used to preserve of warming and humidification function. But, we experienced of unexpected high inspiratory pressure and auto-positive end-expiratory pressure (PEEP) during mechanical ventilation with heated wire humidifier that one of active humidification system. We did not find any factor to raise airway pressure other than the water in the inspiratory limb of circuit. After some of sterile water in the circuit removed, high inspiratory pressure and auto-PEEP reduced. So we think that inspiratory limb water is a rare cause of airway pressure rise. Therefore, if sudden high peak airway pressure and auto-PEEP is encountered upon ventilation, the ventilator circuit status should be checked for the safety of patients.
Epidemiology and Clinical Features of Common Community Human Coronavirus Disease Before COVID-19
( Taehee Kim ),( Yun Su Sim ),( Hayoung Choi ),( Tae Rim Shin ),( Yousang Ko ),( Yong Bum Park ),( Hwan Il Kim ),( Seung Hun Jang ),( Ki Suck Jung ),( Youlim Kim ),( Myung Goo Lee ),( Soojie Chung ),( 대한결핵 및 호흡기학회 2020 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.128 No.-
Backgrounds We would improve the understanding and management preparation of human coronavirus (HCoV) disease by analyzing the epidemiology, clinical aspects, and prognostic factors of patients of all ages who were recently hospitalized with coronavirus. Methods This study was retrospectively performed at five university teaching hospitals between 1 January 2018 and 31 March 2020. Routine molecular testing using for multiplex real-time reverse transcription-polymerase chain reaction Methods was conducted on the respiratory viruses. We assessed the demographics, laboratory findings, and treatment of patients infected with coronavirus. Results There were 807 coronavirus-infected patients admitted to five hospitals for 27 months and 553 (69%) of them were <10 years age. All-cause mortality rates of patients admitted for seasonal HCoV disease were 3.1% in all patients, and 10.8% in patients aged ≥ 18 years. The Cox proportional hazard regression analysis was performed in patients aged ≥ 18 years. After adjusting for other clinical variables, general weakness symptoms (hazard ratio [HR], 2.65; 95% confidence interval [CI], 1.14-6.13, P = 0.023) , National Early Waring Score (NEWS) ≥2 (HR, 6.00; 95% CI, 1.40-25.81, P = 0.016), and coronavirus subtype OC43 (HR, 2.82; 95% CI, 1.21-6.58, P = 0.016) were significantly associated with death from coronavirus. Conclusions Coronavirus infection can reveal a higher mortality rate in patients of ≥18 years than those of <18 years, thus, adult patients require more careful treatment. Furthermore, in adult patients, the factors associated with death from coronavirus include general weakness symptoms, NEWS higher than 2, and OC43 subtype.
A Compact Zeroth-Order Resonant Antenna on Vialess CPW Single Layer
Taehee Jang,임성준 한국전자통신연구원 2010 ETRI Journal Vol.32 No.3
In this letter, a novel zeroth-order resonant (ZOR) antenna on vialess co-planar waveguide (CPW) is proposed. It is based on a composite right/left-handed CPW transmission line. To achieve a compact size, this antenna utilizes the ZOR condition, and its reactive parameters determine the resonant frequency. Each unit cell is composed of a metallic top patch and meander lines. Since it is realized on the CPW single layer, the proposed antenna has the benefits of being a compact size and easy to fabricate. The bandwidth of 6.8% and efficiency of 62% are experimentally achieved. Its bandwidth is enhanced compared with other ZOR antennas.
Enhancing Test Compression With Dependency Analysis for Multiple Expansion Ratios
Taehee Lee,Touba, Nur A.,Joon-Sung Yang IEEE 2017 IEEE transactions on computer-aided design of inte Vol.36 No.9
<P>Scan test data compression is widely used in industry to reduce test data volume (TDV) and test application time (TAT). This paper shows how multiple scan chain expansion ratios can help to obtain high test data compression in system-on-chips. Scan chains are partitioned with a higher expansion ratio than normal in scan compression mode and then are gradually con-catenated based on a cost function to detect any faults that could not be detected at the higher expansion ratios. It improves the overall test compression ratio since it potentially allows faults to be detected at the highest expansion ratio. This paper introduces a new cost function to choose scan chain concatenation candidates for concatenation for multiple expansion ratios. To avoid TDV and TAT increase by scan concatenation, the proposed method takes a logic structure and scan chain length into consideration. Experiment results show the proposed method reduces TAT and TDV by 53%-64% compared with a traditional scan compression method.</P>
An Anthropological Approach to Mobilities: Noel B. Salazar
Taehee Kim Academy of Mobility Humanities 2024 Mobility Humanities Vol.3 No.1
As Noel B. Salazar maintains, anthropology, which straddles social sciences and humanities, provides distinct perspectives on mobility research by dismantling concepts and theories that presume unitary cultures in fixed places. This brief contribution considers two facets of such an anthropological approach to mobilities: imagination and scale. Imagination can be used not only as a subject but also as a method of studying mobility. In particular, the “following” methods of mobility research require imaginative mobilities, which are linked to the representation of mobility in works of literature and art, making it a key area of research within the field of mobility humanities. Furthermore, the concept of scale presents a significant methodological challenge in mobility studies. If mobility research employs a multiscalar approach to mobilities, it becomes evident that the transnational scale is manifested within the national scale. Additionally, it becomes clear that mobility at one scale can coexist with immobility at another, challenging the binary opposition of immobility and mobility. In this context, the new mobilities paradigm challenges the normalisation of stasis as well as the naturalisation of movement. Scrutinising notions of imagination and scale utilised in the anthropological approach to mobilities can defy preconceived assumptions in much mobility research that is based on such binaries.