Sangmin Lee

Kwangwoon University · College of Software and Convergence

We present a hybrid algorithm called parallel simulated annealing with a greedy algorithm (PSAGA) to learn Bayesian network structures. This work focuses on simulated annealing and its parallelization with memoization to accelerate the search process. At each step of the local search, a hybrid search method combining simulated annealing with a gree...

Recently, the transportation capability of the automated material handling system (AMHS) has emerged as a major barrier to the semiconductor fabrication facility (FAB), because it can limit the FAB production capacity. In this study, we propose a prediction method for a machine allocation problem of production scheduling in consideration with the A...

In autonomous vehicle systems (AVSs), which are widely used to transfer wafers in semiconductor manufacturing, robust traffic control is a significant challenge because all the vehicles must be monitored and controlled in real time to cope with traffic congestion. Several predictive approaches have been proposed for preventing traffic congestion in...

Air pollution, especially the continual increase in atmospheric particulate matter (PM), is a global environmental challenge. To reduce the PM concentration, a remarkable amount of machine learning-based research has been proposed. However, increasing the accuracy of the predictions and providing clear interpretations of the predictions are challen...

The class imbalance problem occurs when there is an unequal distribution of classes in a dataset and is a significant issue in various artificial intelligence applications. This study focuses on the severe multiclass imbalance problem of human activity recognition in rehabilitation exercises for people with disabilities. To overcome this problem, w...

Introduction: It is well-known that suicide and excess mortality are high in patients with psychiatric illnesses and this has long been an important issue in the field of mental health. We aim to investigate suicide and other-cause deaths in patients with psychiatric illnesses. Methods: This retrospective, population-based cohort was based on the...

Hollow silicon carbide (SiC) particles have attracted attention due to their well‐defined morphology, low density, and large surface area that can be leveraged for a wide variety of applications. Here, we report the self‐templated synthesis of monodisperse hollow spherical SiC composite particles with controllable shell thicknesses using magnesioth...

Quantum interferometry based on induced-coherence phenomena has demonstrated the possibility of undetected-photon measurements. Perturbation in the optical path of probe photons can be detected by interference signals generated by quantum mechanically correlated twin photons propagating through a different path, possibly at a different wavelength....

Despite intensive clinical and scientific efforts, the mortality rate of sepsis remains high due to the lack of precise biomarkers for patient stratification and therapeutic guidance. Secreted human tryptophanyl-tRNA synthetase 1 (WARS1), an endogenous ligand for Toll-like receptor (TLR) 2 and TLR4 against infection, activates the genes that signif...

Accurate weight measurement is critical for monitoring the growth and well-being of cattle. However, the traditional weighing process, which involves physically placing cattle on scales, is labor-intensive and stressful for the animals. Therefore, the development of automated cattle weight prediction techniques assumes critical significance. This s...

Accurate weight measurement is pivotal for monitoring the growth and well-being of cattle. However, the conventional weighing process, which involves physically placing cattle on scales, is labor-intensive and distressing for the animals. Hence, the development of automated cattle weight prediction techniques assumes critical significance. This stu...

Background The coronavirus disease 2019 (COVID-19) pandemic has worsened mental health and reduced access to mental health services. During the pandemic, the demand for telemedicine has increased and related laws have been enacted. This study aimed to investigate telemedicine use for cases of major mental illnesses during the COVID-19 pandemic and...

The concept of progressive pulmonary fibrosis (PPF) has been introduced to predict the diverse prognosis of interstitial lung disease (ILD). However, the incidence and effect of PPF on outcomes in patients with connective tissue disease-associated interstitial lung disease (CTD-ILD) need to be elucidated. This study reviewed 197 patients with CTD-I...

Computed tomography (CT) image can be reconstructed by various types of kernels depending on what anatomical structure is evaluated. Also, even if the same anatomical structure is analyzed, the kernel being used differs depending on whether it is qualitative or quantitative evaluation. Thus, CT images reconstructed with different kernels would be n...

Biliary hamartomas are tumor-like malformations of the liver. Biliary hamartomas are a type of fibrocystic disorder originating from ductal plate malformation and are typically considered benign, but with the risk of malignant transformation. In this case report, we present a rare occurrence of intrahepatic cholangiocarcinoma (ICC) that developed f...

Objective: The prognostic value of the volume and density of skeletal muscles in the abdominal waist of patients with colon cancer remains unclear. This study aimed to investigate the association between the automated computed tomography (CT)-based volume and density of the muscle in the abdominal waist and survival outcomes in patients with colon...

Objective: The economic hardship brought by the coronavirus disease-2019 (COVID-2019) pandemic has caused mental health problems among people of different socioeconomic status (SES). As social support helps to buffer these problems, we investigated the association between job loss related to COVID-19 and depression, anxiety, and suicidal thoughts;...

Objectives: To determine informational CT findings for distinguishing autoimmune pancreatitis (AIP) from pancreatic ductal adenocarcinoma (PDAC) and to review their diagnostic accuracy. Methods: A systematic and detailed literature review was performed through PubMed, EMBASE, and the Cochrane library. Similar descriptors to embody the identical...

Background For multiple subsolid nodules (SSNs) observed at lung CT, current management focuses on removal of the dominant (≥6 mm) nodule and monitoring of remaining SSNs. Whether the presence of these synchronous SSNs is related to postoperative patient outcomes has not been well established. Purpose To evaluate the prognostic value of single vers...

The importance of new agricultural methods is increasing to cope with the effects of climate change and to ensure food security in the future. A plant factory has diverse advantages, including high productivity, good quality, and no climate constraints; however, the high energy cost for maintaining the closed system environment is a major challenge...

The aim of this study was to conduct a meta-analysis of randomized controlled trials (RCTs) for comparison of the effectiveness of pericapsular nerve group (PENG) block with that of other analgesic techniques for reduction of postoperative pain and consumption of opioids after total hip arthroplasty (THA). A search of records in the PubMed, Embase,...

Objective: North Korean defectors (NKDs) have experienced substantial difficulties during the migration and settlement in South Korea. They have a high prevalence of depression, post-traumatic stress disorder, and suicidal behaviors. The high prevalence of mental disorders among NKDs can lead to a high suicide rate. However, there are no suicide p...

Systemic lupus erythematosus (SLE) is an autoimmune disorder characterized by autoreactive B cells and dysregulation of many other types of immune cells including myeloid cells. Lupus nephritis (LN) is a common target organ manifestations of SLE. Tonicity-responsive enhancer-binding protein (TonEBP, also known as nuclear factor of activated T-cells...

Objective: Research on neural correlates in the prefrontal cortex (PFC) associated with self-injurious behavior has mainly been performed in adults. However, studies on adolescents are scarce. We aimed to investigate the activation and connectivity of the PFC between adolescents with self-injurious behavior (ASI) and psychiatric controls (PC) usin...

Coronaviruses target ciliate cells causing the loss of cilia, acute rhinorrheas, and other ciliopathies. The loss of ciliary function may help the virus infect, replicate, and spread. However, the molecular mechanisms by which coronaviruses cause ciliary defects are still unclear. Herein we demonstrate how coronavirus infection and SARS-CoV-2 3CL p...

Objectives: The present study examined the impact of the coronavirus disease 2019 (COVID-19) pandemic on mental health service utilization through a comparative analysis of nationwide data regarding inpatient care users, outpatient visits, emergency department (ED) visits, and admissions via the ED before and during the pandemic. Methods: Data f...

Heavy metals are defined as metals with relatively high density and atomic weight, and their various applications have raised serious concerns about the environmental impacts and potential human health effects. Chromium is an important heavy metal that is involved in biological metabolism, but Cr exposure can induce a severe impact on occupational...

Background: The primary objective of the present study was to compare surgical failures of intertrochanteric fractures of the femur through a meta-analysis of randomized controlled trials and to assess the change in surgical outcomes over time in a cumulative meta-analysis. Methods: To identify studies evaluating the surgical outcomes of interna...

The prevalence of allergic rhinitis (AR) and the socioeconomic burden associated with the medical cost and quality of life (QOL) of AR have progressively increased. Therefore, practical guidelines for the appropriate management of AR need to be developed based on scientific evidence while considering the real-world environment, values, and preferen...

Objectives Thyroid hemiagenesis is a rare congenital anomaly characterized by the lack of development of one thyroid lobe. The purpose of this study was to evaluate computed tomography (CT) findings of thyroid hemiagenesis and to establish useful CT criteria for differentiating thyroid hemiagenesis from the hemithyroidectomy state. Methods The CT...

Wavelength-domain optical coherence tomography is demonstrated at infrared wavelength through measurement of visible photons from a hybrid-type induced-coherence interferometer. Interference visibility is maximized by optimizing relevant heralding efficiencies between photons of the inter-band entangled pairs.

Objectives: To evaluate the recall rate and performance of free-breathing T1W dynamic imaging in patients who underwent gadoxetic acid-enhanced liver MRI. Methods: We retrospectively reviewed patients who underwent free-breathing dynamic T1WI liver MRI using Cartesian (XD-VIBE) or self-gated radial (SG-GRASP) sequences at two institutions. Four...

This study focuses on resolving traffic among autonomous vehicles in large-scale semiconductor manufacturing plants. Although automated material handling systems (AMHSs) provide rapid wafer transfer services by controlling thousands of autonomous vehicles between facilities in real time, traffic congestion is a significant issue, which increases th...

Background The accuracy of distal femoral resection in intramedullary (IM) guided total knee arthroplasty (TKA) depends on femoral morphology and varies according to individual anatomy. This study aimed to characterise coronal plane femoral bowing in Far East Asians according to age, sex, and severity of varus deformity to identify optimal strategi...

Importance The global increase in the numbers of refugees and immigrants has made mental health a major public concern. Although they are divided, North and South Korea share a common ethnic heritage. Objective To investigate mental illness risk among North Korean immigrants living in South Korea and compare it with that of the general South Korea...

Background The accuracy of distal femoral resection in intramedullary (IM) guided total knee arthroplasty (TKA) depends on femoral morphology and varies according to individual anatomy. This study aimed to characterise coronal plane femoral bowing in Far East Asians according to age, sex, and severity of varus deformity to identify optimal strategi...

This study aimed to develop a Lactobacillus plantarum (L. plantarum)-loaded dual-layer wound dressing (DLD) with excellent wound recovery and mechanical properties. L. plantarum-loaded DLD was fabricated by covering the hydrogel (inner layer) with a hydrocolloid (external layer). The hydrocolloid was manufactured by the hot-melt method, consisting...

Background: This study investigated the results of component asymmetry (CA) in bilateral cementless total hip arthroplasty (THA). Methods: This study included 300 patients, who underwent bilateral cementless THA between April 2000 and December 2017. They were divided into the component symmetry (CS) and CA groups; CA group was sub-classified int...

Portal biliopathy refers to the changes in the bile duct caused by portal vein thrombosis or obstruction. It is assumed to be caused by cavernous transformation due to the development of the venous system surrounding the bile duct, but the exact pathology is still unknown. Biliary morphologic abnormalities of portal biliopathy are discovered incide...

M13 bacteriophage is a promising biomolecule with unique biochemical and structural traits (e.g., high aspect ratio, 2700 copies of identical coat proteins covering the phage surface) that can also be programmable, making it a versatile material for bio-nano and biomimetic applications. Although M13 bacteriophage is mostly known as a carrier in the...

Objective: This paper aims to spur thought-provoking practical debates on current nurse workforce staffing and scheduling systems in relation to a critical review of Ang and colleagues’ (2018) article entitled “Nurse workforce scheduling in the emergency department: A sequential decision support system considering multiple objectives.” Design: Disc...

In this study, we propose using TabNet, a deep learning model effective for tabular dataset, to predict the average and maximum levels of WIP (work-in-process) in semiconductor plant. The WIP estimation is an essential problem for decision-making to expand factory infrastructure facilities, because the under- or over-estimation of WIP causes produc...

Background Preexisting indexes for predicting the prognosis of chronic obstructive pulmonary disease (COPD) do not use radiologic information and are impractical because they involve complex history assessments or exercise tests. Purpose To develop and to validate a deep learning-based survival prediction model in patients with COPD (DLSP) using ch...

IntroductionThis study aimed to report the surgical outcomes in patients with high-energy induced subtrochanteric fracture and determine the risk factors for nonunion using statistical analysis.Methods This study evaluated 88 patients with high-energy induced subtrochanteric fractures who underwent surgeries with indirect reduction technique and in...

Readers: This page includes a wrong information. Dr. Sangmin Lee and Dr. Haejoong Kim are not co-authored on this publication. The first author, Claire Su-Yeon Park, is now working to correct the author information with the Elsevier production team of the J of Professional Nursing. The readers should NOT cite this paper for now. The readers should...

In semiconductor plants, autonomous vehicle systems (AVSs) are designed to transfer wafer lots using several hundreds of vehicles. To minimize the idleness of production machines, vehicles must be quickly assigned and sent to the required location in advance. Currently, owing to uncertainties that exit in production processing, simple deterministic...

M13 bacteriophage is a promising biomolecule capable of various bionano and material science applications. The biomaterial can self-assemble into matrices to fabricate bioscaffolds using high phage concentration and high phage purity. Previous studies aimed to acquire these conditions in large-scale phage production and have identified the optimal...

Simple Summary Immune checkpoint inhibitors (ICIs), such as programmed cell death protein 1 (PD-1) blockade, have proven to be the most effective agents for the management of many cancer types. Although ICIs are the current standard of care for treating metastatic clear cell renal cell carcinoma (ccRCC), 40–60% of patients still have intrinsic resi...

Objectives: To identify reliable MRI features for differentiating autoimmune pancreatitis (AIP) from pancreatic ductal adenocarcinoma (PDAC) and to summarize their diagnostic accuracy. Methods: We conducted a systematic literature review and meta-analysis using PubMed, EMBASE, and the Cochrane Library to identify original articles published betw...

Background Benzo(a)pyrene is known as a ubiquitous environmental pollutant. The general population can be exposed to benzo(a)pyrene through ambient air, tobacco smoke, water, and food. Genotoxicity and carcinogenicity are well-known adverse effects of benzo(a)pyrene exposure. However, few studies have focused on the effects of oral benzo(a)pyrene e...

Aim: This study aims to develop a free, limited-edition workshop as an effective knowledge translation strategy to enhance nurse leader-perceived self-efficacy for competence using Park's Sweet Spot Theory and to evaluate its effectiveness over time. Method: This is a study showing the process of developing a study protocol and its details. Res...

Background We aimed to compare outcomes of treatment of isolated talonavicular arthrodesis (ITNA) with screw only or screw plus plate, respectively. Methods We retrospectively evaluated 40 consecutive cases of ITNA [two-screw fixation patients: Group 1 (23 cases); screw-plus-plate fixation patients: Group 2 (17 cases)]. Outcome measures included r...

The purpose of this study was to evaluate the image quality and the radiation dose in pancreatic dynamic CT with 90­kVp tube voltage and reduction of the standard amount of contrast agent, compared with 100­kVp PDCT. 51 patients who underwent both CT protocols were included in this retrospective study. One reviewer measured the attenuation values o...

Background: LI-RADS has been investigated primarily in terms of detection of hepatocellular carcinoma (HCC), with less attention given to its performance, particularly on CT, in determining eligibility for liver transplantation (LT). Objectives: To assess performance of LI-RADS version 2018 (v2018) on CT for diagnosis of HCC and determination of LT...

Accumulating evidence indicates that the autophagy process is involved in the pathogenesis of schizophrenia. Autophagy plays a fundamental role in neuronal survival and function, and autophagy-related genes have been suggested to be associated with the pathogenesis of schizophrenia. The Unc-51-like autophagy activating kinase 2 (ULK2) gene has been...

Purpose To identify whether preoperative factors could predict the recurrence after curative resection of gastrointestinal stromal tumours (GISTs) and evaluate the performance of a prediction model using preoperative factors for GIST recurrence compared to a model using preoperative/postoperative factors.4 Method This retrospective study included...

Objectives To compare the osteoporosis-predicting ability of computed tomography (CT) indexes in abdomen-pelvic CT using the proximal femur and the reliability of measurements in two- and three-dimensional analyses. Methods Four hundred thirty female patients (age range, 50–96 years) who underwent dual-energy X-ray absorptiometry and abdominal-pel...

Various lung diseases cause structural or reflex changes in the lungs, resulting in changes in ventilation or perfusion status, which lead to ventilation–perfusion imbalances. Various imaging methods, including magnetic resonance imaging (MRI), gamma camera-based planar scintigraphy, single-photon emission computed tomography (SPECT), or positron e...

For energy-efficient accelerators in data centers that leverage advances in the performance and energy efficiency of recent algorithms, flexible architectures are critical to support state-of-the-art algorithms for various deep learning tasks. Due to the matrix multiplication units at the core of tensor operations, most recent programmable architec...

Purpose To evaluate the efficacy of peripheral nerve block on reduction in opioid consumption and pain control after hip arthroscopy. Method To identify studies evaluating the effects of peripheral nerve block on pain control and reduction in opioid consumption in hip arthroscopy, we searched all records in the PubMed, Embase, and Cochrane Library...

Objective: This review will focus on how AI-and, specifically, deep learning-can be applied to complement aspects of the current healthcare system. We describe how AI-based tools can augment existing clinical workflows by discussing the applications of AI to worklist prioritization and patient triage, the performance-boosting effects of AI as a se...

Remdesivir, an antiviral agent for the treatment of COVID‐19, is metabolized intracellularly, with these metabolites eliminated predominantly in urine. Because of a lack of safety and pharmacokinetic data, remdesivir is not currently recommended for patients with eGFR < 30 ml/min/1.73 m2 and those on hemodialysis. This study evaluated the pharmacok...

Background Acute hydrocephalus may decrease cerebral perfusion by increasing intracranial pressure. Computed tomography perfusion (CTP) has become a significant adjunct in evaluating regional and global cerebral blood flow (CBF). Purpose To investigate the changes in cerebral perfusion parameters and maximum contrast enhancement (MCE) in patients...

Background: At the moment, it is unknown where optimal safe nurse staffing levels are located. Park's Optimized Nurse Staffing (Sweet Spot) Estimation Theory may help pinpoint the optimal safe staffing levels to maximize quality of care outcomes relative to cost in home health nursing. However, theory testing is necessary to verify testability and...

Background: Park's Optimized Nurse Staffing (“Sweet Spot”) Estimation Theory (Park, 2017) may contribute to ameliorate global nursing shortages by providing optimal safe staffing levels, maximizing patient outcomes relative to nurses´ labor costs, fitted to each practice setting. However, this solution may be perceived by nurse leaders as being too...

Objective: This paper aims to spur thought-provoking practical debates on current nurse workforce staffing and scheduling systems in relation to a critical review of Ang and colleagues' (2018) article entitled “Nurse workforce scheduling in the emergency department: A sequential decision support system considering multiple objectives.” Design: Disc...

Purpose: This study aimed to investigate whether a deep learning model for automated detection of unruptured intracranial aneurysms on time-of-flight (TOF) magnetic resonance angiography (MRA) can achieve a target diagnostic performance comparable to that of human radiologists for approval from the Korean Ministry of Food and Drug Safety as an art...

Purpose Long-term treatment of attention deficit/hyperactivity disorder (ADHD) is important, but adherence and persistence in practice are still suboptimal. To better understand medication compliance for ADHD, we divided adults with ADHD into groups based on their history of childhood and adolescent ADHD, and compared their characteristics, medicat...

This study aimed to investigate the efficacy of intravitreal povidone-iodine (PI) administration for the treatment of Candida albicans endophthalmitis. Forty New Zealand white rabbits were divided into four groups (n = 10 per group). After the induction of endophthalmitis using Candida albicans, groups A, B, and C received single intravitreal injec...

Objective: As of 2019, suicide is serious problem in Korea, with the highest suicide rate among OECD countries. To reduce suicide rates Emergency Department Based Post-Suicide Attempt Case Management carried out with government funding in South Korea, but it is insufficient to address the issue. Aim of this study is to prevent suicide attempts thr...

Background: We aimed to investigate the detection rate of body CT or PET/CT for sites of extracranial disease in patients with a new pathological diagnosis of CNS DLBCL and to identify factors associated with sites of extracranial disease. Methods: An international multicenter cohort study of consecutive immunocompetent patients with a new diagn...

In this paper, we propose using explainable artificial intelligence (XAI) techniques to predict and interpret the effects of local festival components on tourist satisfaction. We use data-driven analytics, including prediction, interpretation, and utilization phases, to help festivals establish a tourism strategy. Ultimately, this study aims to ide...

Pulmonary embolism (PE) is a potentially fatal disease if the diagnosis or treatment is delayed. Currently, multidetector computed tomography (MDCT) is considered the standard imaging method for diagnosing PE. Dual-energy CT (DECT) has the advantages of MDCT and can provide functional information for patients with PE. The aim of this review is to p...

Rationale: Dienogest is a type of progestin used for the treatment of endometriosis (EM). However, a significant adverse effect of dienogest is depression; therefore, assessing for a history of mood disorders is recommended before prescribing the drug. Herein, we present the case of a patient with no history of psychiatric disorders who was diagno...

Objectives: This study focuses on building a database for patient-led search on drug side effects using basic drug information, drug analysis results information, patient information, and patient-generated health data (PGHD).Methods: After collecting data from the Health Insurance Review and Assessment Institute, the Korean Pharmaceutical Informati...

Background The purpose of this study was to screen various drug delivery systems for improving the aqueous solubility and oral bioavailability of sildenafil. Three representative techniques, solid self-nanoemulsifying drug delivery systems (SNEDDS), amorphous microspheres and crystalline microspheres, were compared. Methods Both microspheres syste...

Purpose This study examined the relationship between serum gamma-glutamyltransferase concentration and the risk of cerebral infarction in the Koreans. Materials and Methods A total of 209,481 out of 223,551 participants in the National Health Information Database who received medical checkups in 2009 were included in the final analysis. The diagno...

There have been discussions suggesting an ethics committee be established which would oversee humanity’s efforts in Artificial Intelligence (AI) and its applications to our society. This concern arises mostly because of the limitations of existing data used for the development of AI algorithms that intrinsically reflect unfair and discriminatory fa...