Publications by authors named "Tae Yang"

Analog reservoir computing (ARC) systems have attracted attention owing to their efficiency in processing temporal information. However, the distinct functionalities of the system components pose challenges for hardware implementation. Herein, we report a fully integrated ARC system that leverages material versatility of the ferroelectric-to-mixed phase boundary (MPB) hafnium zirconium oxides integrated onto indium-gallium-zinc oxide thin-film transistors (TFTs).

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The purpose of the analysis was to evaluate if 10 mg naloxone, administered intramuscularly, could reverse or prevent opioid-induced respiratory depression (OIRD), including OIRD associated with the administration of lethal doses of high-potency opioids. A naloxone population pharmacokinetic (PK) model was generated using data from two naloxone auto-injector (NAI) clinical PK studies. Mechanistic OIRD PK-pharmacodynamic (PD) models were constructed using published data for buprenorphine, morphine, and fentanyl.

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Article Synopsis
  • Preventing perinatal transmission of hepatitis B is crucial for achieving elimination of the virus.
  • A study analyzed data from over 39,000 infants born to mothers who tested positive for HepB, revealing that a high percentage received timely vaccinations.
  • Factors like maternal age and HepB e-antigen status increased infection risk, but the interval between the first and second doses of the vaccine did not affect the infection likelihood.
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Objective: : To analyze the epidemiological information of patients with traumatic spinal cord injury (SCI) and concomitant traumatic brain injury (TBI) and to suggest points to be aware of during the initial physical examination of patients with SCI.

Methods: : This study was a retrospective, observational study conducted in a regional trauma center. All the records of patients diagnosed with traumatic SCI between 2016 and 2020 were reviewed.

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Although research into ultrahigh dose-rate (UHDR) radiation therapy is ongoing, there is a significant lack of experimental measurements for two-dimensional (2D) dose-rate distributions. Additionally, conventional pixel-type detectors result in significant beam loss. In this study, we developed a pixel array-type detector with adjustable gaps and a data acquisition system to evaluate its effectiveness in measuring UHDR proton beams in real time.

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The prevalence of chronic kidney disease (CKD) is steadily increasing, and it is a global health burden. Exercise has been suggested to improve physical activity and the quality of life in patients with CKD, eventually reducing mortality. This study investigated the change in physical performance after exercise in dialysis-dependent patients with CKD and analyzed differentially expressed proteins before and after the exercise.

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Intravesical bacillus Calmette-Guérin (BCG) instillation is an adjuvant treatment for non-muscle-invasive urinary bladder cancer. Although most complications associated with BCG immunotherapy are mild and self-limiting, rare albeit serious complications have been reported. Only a few cases of BCG-related rhabdomyolysis have been reported.

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  • This study assessed the effectiveness of the measles-rubella vaccination program in Laos by comparing seroprevalence data from surveys conducted in 2014 and 2019.
  • A significant increase in immunity levels was observed, with measles seroprevalence rising from 83.9% to 98.3% and rubella from 75.4% to 87.8%.
  • The findings indicate that the vaccination program likely eliminated the rubella infection's average force and prevented around 78 cases of congenital rubella syndrome by 2019, showcasing successful immunization efforts in a developing country context.
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  • This study is the first to examine the population-based seroprevalence of chronic hepatitis B and C infections in Lao PDR, providing important data on these infections.
  • A nationwide survey in June 2019 collected blood samples and found a prevalence rate of 4.2% for hepatitis B and 1.6% for hepatitis C.
  • The analysis revealed higher odds of hepatitis B infection among younger individuals, particularly those aged 20-29, and indicated variations based on region and ethnicity, suggesting the need for further confirmation in future research.
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  • Immunization is crucial for child health in Lao PDR, yet low coverage rates persist, prompting this study to identify factors influencing full immunization in children aged 12 to 35 months.
  • Researchers analyzed data from a nationwide survey, classifying children into "fully immunized" and "partially immunized" groups to assess demographics and health service usage affecting vaccination rates.
  • The findings showed that 67.6% of children were fully immunized, with hospital births significantly linked to higher immunization rates, while gaps in vaccinations primarily involved Hep B, PCV, and MCV doses.
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Amorphous oxide semiconductor (AOS) field-effect transistors (FETs) have been integrated with complementary metal-oxide-semiconductor (CMOS) circuitry in the back end of line (BEOL) CMOS process; they are promising devices creating new and various functionalities. Therefore, it is urgent to understand the physics determining their scalability and establish a physics-based model for a robust device design of AOS BEOL FETs. However, the advantage emphasized to date has been mainly an ultralow leakage current of these devices.

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In this article, we study the post-annealing effect on the synaptic characteristics in Pd/IGZO/SiO/p-Si memristor devices. The O-H bond in IGZO films affects the switching characteristics that can be controlled by the annealing process. We propose a switching model based on using a native oxide as the Schottky barrier.

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This paper introduces a compact SPICE model of a two-terminal memory with a Pd/Ti/IGZO/p-Si structure. In this paper, short- and long-term components are systematically separated and applied in each model. Such separations are conducted by the applied bias and oxygen flow rate (OFR) during indium gallium zinc oxide (IGZO) deposition.

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Drawing on the broaden-and-build theory and trait-activation theory, this study investigates the mediating effect of thriving at work on the relationship between learning goal orientation (LGO) and promotive voice behavior, as well as the moderating effect of intrinsic career growth (ICG) on the relationship between employees' LGO and thriving at work. Using the two-wave design with a 4-month time lag involving 279 employees, the results demonstrate that employees' LGO is positively associated with promotive voice behavior by thriving at work. Furthermore, ICG moderates the relationship between LGO and thriving at work.

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Background And Objectives: The aim of this study was to demonstrate the efficacy and safety of treatment with drug-coated balloon (DCB) in a large real-world population.

Methods: Patients treated with DCBs were included in a multicenter observational registry that enrolled patients from 18 hospitals in Korea between January 2009 and December 2017. The primary outcome was target lesion failure (TLF) defined as a composite of cardiovascular death, target vessel myocardial infarction, and clinically indicated target lesion revascularization at 12 months.

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Background: Insertion of a left ventricular assist device (LVAD) and heart transplantation (HT) improve the survival of patients with heart failure. In addition, cardiac rehabilitation (CR) further increases the functional capacity. This case report describes a successful case of CR after LVAD insertion and subsequent HT.

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In electrocardiography (ECG) gated cardiac CT angiography (CCTA), multiple images covering the entire cardiac cycle are taken continuously, so reduction of the accumulated radiation dose could be an important issue for patient safety. Although ECG-gated dose modulation (so-called ECG pulsing) is used to acquire many phases of CT images at a low dose, the reduction of the radiation dose introduces noise into the image reconstruction. To address this, we developed a high performance unsupervised deep learning method using noise disentanglement that can effectively learn the noise patterns even from extreme low dose CT images.

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Skin cancer usually occurs in the facial area relatively exposed to sunlight. Medical imaging can confirm the invasiveness and metastasis of skin cancer, which is used to establish a surgical plan. However, there is no method of directly marking this information on the patient's skin in the operating room.

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Background: Studies comparing left atrial (LA) function after surgical closure or percutaneous closure in patients with an atrial septal defect (ASD) are lacking.

Methods: Between 1 and 3 years after ASD treatment, we retrospectively analyzed the medical records and transthoracic echocardiographic images of patients who had been diagnosed with an ASD after 20 years of age and who had undergone surgical closure (ASD-S) or percutaneous device closure (ASD-D). We measured LA peak systolic, early diastolic, and late diastolic strain values using 2-dimensional (2D) speckle tracking echocardiography (STE) and calculated reservoir, conduit, and contraction strain.

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Background: A self-inflating bag (SIB) is an essential device for pulmonary resuscitation in emergencies. However, it is difficult for a rescuer to accurately predict a tidal volume (TV) delivered by a SIB to a patient.

Objective: The objective of this study was to evaluate TV values delivered by a SIB with various compression methods.

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Background And Purpose: The increased demand for donor organs has made it crucial to keep the organs of patients with impending brain death (PWIBDs) suitable for transplantation during the process of determining brain death. This study aimed to identify the time taken to determine brain death (TT-BD) in PWIBDs and the associated influencing factors.

Methods: This study analyzed data collected by the Korean Organ Donation Agency from 15 hospitals in the Yeongnam region of South Korea.

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Article Synopsis
  • South Korea faced a public health crisis with MERS in 2015 and is currently dealing with the COVID-19 pandemic, applying lessons learned from MERS to improve its response strategies.
  • * The country's preparedness helped flatten the COVID-19 epidemic curve in early 2020, demonstrating effective epidemiological practices.
  • * With ongoing COVID-19 waves expected, it’s crucial for South Korea to enhance healthcare capacity and maintain public health measures until effective treatments and vaccines are available.
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  • A pre-hospital ECG transmission program was developed in Busan, South Korea, aiming to improve the response time for treating STEMI patients during emergency transport.
  • The program led to significant reductions in systemic time delay and door-to-balloon time for patients needing reperfusion therapy.
  • Increased awareness and implementation of such ECG transmission methods could enhance stroke care in community-based emergency systems.
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