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426 result(s) for "Lee, Seungwon"
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Publication Trends in Leading Event Management Journals: A Comparative Analysis from 2019 to 2023
This study investigates the thematic evolution within event management research by analyzing articles published in three leading event-focused journals—Event Management, Journal of Convention and Event Tourism, and International Journal of Event and Festival Management—from 2019 to 2023. Using comprehensive content analysis and thematic network mapping, the study identifies trends in research topics, author’s keywords, event types, and abstracts, revealing dominant themes such as marketing and management and highlighting underexplored areas like technology and social life-cycle events. The analysis also underscores the impact of the COVID-19 pandemic on research trends. The findings provide a detailed overview of the field's progression, offering insights into the academic focus of event management research and suggesting avenues for future exploration. This study contributes to the literature by mapping the thematic landscape of event management, emphasizing the importance of aligning research with industry developments and emerging global challenges.
Organic flash memory on various flexible substrates for foldable and disposable electronics
With the emergence of wearable or disposable electronics, there grows a demand for a flash memory realizable on various flexible substrates. Nevertheless, it has been challenging to develop a flash memory that simultaneously exhibits a significant level of flexibility and performance. This is mainly due to the scarcity of flexible dielectric materials with insulating properties sufficient for a flash memory, which involves dual dielectric layers, respectively, responsible for tunneling and blocking of charges. Here we report ultra-flexible organic flash memories based on polymer dielectrics prepared by initiated chemical vapor deposition. Using their near-ideal dielectric characteristics, we demonstrate flash memories bendable down to a radius of 300 μm that exhibits a relatively long-projected retention with a programming voltage on par with the present industrial standards. The proposed memory technology is then applied to non-conventional substrates, such as papers, to demonstrate its feasibility in a wide range of applications. Flexible flash memory is crucial to modern electronics, but its fabrication is challenging in the absence of suitable dielectric materials. Here, Lee et al . realize organic memory with retention over 10 years using tunneling and blocking dielectric layers prepared by initiated chemical vapor deposition.
Complexation-driven assembly of imine-linked helical receptors showing adaptive folding and temperature-dependent guest selection
The development of synthetic receptors capable of selectively binding guests with diverse structures and multiple functional groups poses a significant challenge. Here, we present the efficient assembly of foldamer-based receptors for monosaccharides, utilising the principles of complexation-induced equilibrium shifting and adaptive folding. Diimine 4 can be quantitatively assembled from smaller components when d -galactose is added as a guest among monosaccharides we examined. During this assembly, dual complexation-induced equilibrium shifts toward both the formation of diimine 4 and the conversion of d -galactose into α- d -galactofuranose are observed. Diimine 6 is quantitatively assembled in the presence of two different guests, methyl β- d -glucopyranoside and methyl β- d -galactopyranoside, resulting in the formation of two dimeric complexes: ( 6 - MP ) 2 ⊃(methyl β- d -glucopyranoside) 2 and ( 6 - MM ) 2 ⊃(methyl β- d -galactopyranoside∙2H 2 O) 2 , respectively. These two complexes exhibit distinct folding structures with domain-swapping cavities depending on the bound guest and temperature. Interestingly, ( 6 - MM ) 2 ⊃(methyl β- d -galactopyranoside∙2H 2 O) 2 is exclusively formed at lower temperatures, while ( 6 - MP ) 2 ⊃(methyl β- d -glucopyranoside) 2 is only formed at higher temperatures. The development of synthetic receptors capable of selectively binding monosaccharides is highly challenging. Here, authors present the efficient synthesis of these receptors based on foldamers, achieved through complexation-induced equilibrium shifting.
Compliance with the WHO recommended 8+ antenatal care contacts schedule among postpartum mothers in eastern Uganda: A cross-sectional study
The World Health Organization (WHO) recommends at least 8 antenatal care (ANC) contacts during pregnancy, but many women in low and middle-income countries do not adhere to this schedule, which may contribute to high rates of maternal and neonatal mortality. This study assessed compliance to the WHO recommended 8+ ANC contacts schedule and associated factors among postpartum mothers in eastern Uganda. This was a cross-sectional multicenter study conducted between July and August 2022 at four selected hospitals in Eastern Uganda using quantitative techniques. We recruited postnatal mothers who had given birth within 48 hours with records of their ANC contacts. Compliance to the WHO recommended 8+ ANC contacts schedule was defined as having received the recommended ANC contacts as per the gestational age at childbirth following the current ANC for a positive pregnancy experience WHO guidelines. We conducted multivariable logistic regression analysis to assess the association between compliance to the WHO recommended 8+ ANC contacts schedule and selected independent variables. A total of 1104 postpartum mothers participated in the study with a mean age (± standard deviation) of 26 ± 6.4 years, and a majority had given birth from a referral hospital (n = 624 56.5%). Compliance to the WHO recommended 8+ ANC contacts schedule was low (n = 258, 23.4%), and only 23.2% (196) of the women had attended their first antenatal care contact within the first trimester. Factors associated with compliance to the WHO recommended 8+ ANC contacts were: attending the first antenatal care contact within 12 weeks of gestation [AOR: 6.42; 95% CI: (4.43 to 9.33)], having 2 to 4 children [AOR: 0.65; 95% CI: (0.44 to 0.94)], having a spouse who is unemployed [AOR: 1.71; 95% CI: (0.53 to1.08)] and having insurance coverage [AOR: 2.31; 95% CI: (1.17 to 4.57)]. Compliance with the 8+ ANC contacts schedule remains very low. Efforts should focus on increasing health education, particularly for multiparous women, and encouraging mothers to begin ANC in their first trimester. Exploring the dynamics of partner support, especially with employment status, may offer insights into improving ANC attendance.
Enhancing cognitive and physical performance in older adults through wearable sensor-based interactive cognitive-motor training: a randomized clinical trial
Cognitive decline in older adults, often manifested as reduced processing speed and memory, represents a significant challenge to daily functioning and overall quality of life (QoL). Physical inactivity compounds these issues, whereas increased physical activity can lead to healthier cognitive aging. This study examines the impact of wearable sensor-based interactive cognitive-motor training (ICMT) on cognitive and physical performance in older adults. In a single-blind, randomized, parallel-group trial, 36 community-dwelling older adults aged 65 and older were divided into an ICMT and a cognitive training (CT) group. For six weeks, the ICMT group participated in cognitive training using the developed equipment, while the CT group participated in cognitive training using a seated tablet. The ICMT group demonstrated a significant improvement in cognitive function, increasing 1.94 ± 2.98 score (8.60% increase, p  < 0.05), and enhanced balance and strength ( p  < 0.05). Hemodynamic responses of the prefrontal cortex showed a decreasing trend between groups. The ICMT group also demonstrated improved endurance in the 6-minute walk test, covering 18.00 ± 31.0 m more (4.65% farther) than the CT group ( p  < 0.05). These findings suggest that wearable sensor-based ICMT may offer a practical and effective method to improve cognitive and physical function in older adults, enhancing daily living activities and QoL. Moreover, the wearable sensor-based ICMT offers ease of use, portability, and the ability to conduct training in various settings without requiring specialized facilities, making it a promising method for older adults.
Upper thoracic spine mobilization and mobility exercise versus upper cervical spine mobilization and stabilization exercise in individuals with forward head posture: a randomized clinical trial
Background Although upper cervical and upper thoracic spine mobilization plus therapeutic exercises are common interventions for the management of forward head posture (FHP), no study has directly compared the effectiveness of cervical spine mobilization and stabilization exercise with that of thoracic spine mobilization and mobility exercise in individuals with FHP. Methods Thirty-two participants with FHP were randomized into the cervical group or the thoracic group. The treatment period was 4 weeks, with follow-up assessment at 4 and 6 weeks after the initial examination. Outcome measures including the craniovertebral angle (CVA), cervical range of motion, numeric pain rating scale (NPRS), pressure pain threshold, neck disability index (NDI), and global rating of change (GRC) were collected. Data were examined with a two-way repeated-measures analysis of variance (group × time). Results Participants in the thoracic group demonstrated significant improvements ( p  < .05) in CVA, cervical extension, NPRS, and NDI at the 6-week follow-up compared with those in the cervical group. In addition, 11 of 15 (68.8%) participants in the thoracic group compared with 8 of 16 participants (50%) in the cervical group showed a GRC score of +4 or higher at the 4-week follow-up. Conclusions The combination of upper thoracic spine mobilization and mobility exercise demonstrated better overall short-term outcomes in CVA (standing position), cervical extension, NPRS, NDI, and GRC compared with upper cervical spine mobilization and stabilization exercise in individuals with FHP. Trial registration KCT0002307 , April 11, 2017 (retrospectively registered).
How Americans Judge
Despite research on differences in moral logics across demographic categories, the overall community structure in how Americans share standards of judgment, and hence a fundamental basis for categorical inequalities, remains unclear. To identify communities of shared moral logics, we inductively code judgments in interview transcripts from a probability sample of Americans. We then identify clusters in a network induced by similarities in how Americans judge. We find that competence and prosociality emerge as primary logics by which Americans judge others positively. Gender is the strongest predictor for which moral logics Americans deploy in daily life. Finally, different communities emerge in judgments of institutions, or in negative judgments, suggesting that Americans deploy various moral logics depending on context, which suggests possibilities for bridging categorical divides.
Comparison of the Influence of Dual-Task Activities on Prefrontal Activation and Gait Variables in Older Adults with Mild Cognitive Impairment during Straight and Curved Walking
Background and Objectives: Mild cognitive impairment (MCI) is an early stage of dementia in which everyday tasks can be maintained; however, notable challenges may occur in memory, focus, and problem-solving skills. Therefore, motor-cognitive dual-task training is warranted to prevent cognitive decline and improve cognition in aging populations. This study aimed to determine the influence of such dual-task activities during straight and curved walking on the activities of the prefrontal cortex and associated gait variables in older adults with MCI. Materials and Methods: Twenty-seven older adults aged ≥65 years and identified as having MCI based on their scores (18–23) on the Korean Mini-Mental State Examination were enrolled. The participants performed four task scenarios in random order: walking straight, walking straight with a cognitive task, walking curved, and walking curved with a cognitive task. The activation of the prefrontal cortex, which is manifested by a change in the level of oxyhemoglobin, was measured using functional near-infrared spectroscopy. The gait speed and step count were recorded during the task performance. Results: Significant differences were observed in prefrontal cortex activation and gait variables (p < 0.05). Specifically, a substantial increase was observed in prefrontal cortex activation during a dual task compared with that during a resting-state (p < 0.013). Additionally, significant variations were noted in the gait speed and step count (p < 0.05). Conclusions: This study directly demonstrates the impact of motor-cognitive dual-task training on prefrontal cortex activation in older adults with MCI, suggesting the importance of including such interventions in enhancing cognitive function.
Postoperative Rehabilitation Protocol Following Arthroscopic Rotator Cuff Repair: A Prospective Single-Arm Pragmatic Interventional Study
Background and Objectives: Rotator cuff tear is the most common cause of shoulder pain. If nonsurgical treatment fails, arthroscopic rotator cuff repair (ARCR) is recommended. Since the standards for rehabilitation after ARCR are not clear, various rehabilitation methods have been suggested. This study intends to investigate the effect on the recovery phase of ARCR patients through a postoperative rehabilitation protocol (PRP) that considers the healing process and rehabilitation trend. Materials and Methods: This single-arm, pragmatic intervention study was conducted on 30 patients, two weeks postoperative day (POD) after ARCR. ARCR patients received intervention for six weeks from POD two-week, and pain intensity and shoulder function were evaluated at two-week intervals until POD 12-week, and range of motion (ROM) was evaluated at POD four-week and eight-week. Results: In this study, all variables improved over time (p < 0.05). As a result of the comparison between time points, a significant improvement was found in shoulder function at POD 6-week. In addition, the effect size had a large effect on ROM (flexion, scaption flexion, abduction, and external rotation) and shoulder function. Conclusions: Management through the PRP based on scientific evidence in the strategy of postoperative rehabilitation of patients with ARCR is effective for pain intensity, ROM, and shoulder function.
Comparison of Core Muscle Asymmetry Using Spine Balance 3D in Patients with Arthroscopic Shoulder Surgery: A STROBE-Compliant Cross-Sectional Study
Background and Objectives: Joint immobilization after shoulder surgery can cause an imbalance in the periscapular muscles and affect the kinetic chain throughout the body. There is a difference in core muscle stability because of the asymmetry of the lower extremity muscles. However, the difference due to the asymmetry of the upper-extremity muscles has not been studied extensively. The purpose of this study is to investigate the effect of joint immobilization on the symmetry of the core muscles involved in proximal stability for distal mobility. Materials and Methods: Fifty-five patients who underwent arthroscopic shoulder surgery participated in this study. Core muscle asymmetry (CMA) was measured using a body tilt device. The evaluation variables were analyzed according to the surgical site based on the direction of the core muscle ratio and core muscle state ratio. Results: No differences in CMA were found based on the surgical site (p > 0.05). As a result of the additional subanalysis, significant differences in sex and postoperative day were established (p < 0.05). CMA was low during the intensive postoperative rehabilitation period. However, sex-related differences were greater in males than in females. Conclusions: The clinical results suggest that core muscle training is necessary to reduce CMA during rehabilitation after the immobilization period has elapsed.