Publications by authors named "Seungho Han"

Background: Impaired executive function is common in older adults. This study examined the causal relationship between the use of information and communication technology (ICT) and executive function in older adults over time.

Method: This study performed a secondary analysis of data from four waves (2016-2019) of the National Health and Aging Trends Study.

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The aim of this study was to investigate the appearance of the faces of Chinese women in leadership positions through an anthropometric analysis of Women of China from 1949 to 2022. Photographs of cover women of Women of China were gathered and a total of 380 frontal and 101 lateral photographs were collected. The photographs were divided into 3 time phases: phase I (1949-1978): from the launch of Women of China magazine, up until the time of reform and opening; phase II (1978-2010): from the time of reform and opening until when Google China was blocked; and phase III (2010-2022): to the present.

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The aim of this study was to investigate the aesthetic characteristics of Chinese beauty through an anthropometric analysis of beauty pageant winners from 1952 to 2021. Photographs from 5 renowned Chinese beauty pageants (Miss World Pageant, Miss Earth Pageant, Miss Universe Pageant, Miss International Pageant, and Miss Chinese Cosmos Pageant) were gathered and a total of 294 frontal and 31 lateral photographs were collected. The photos were divided into 3 time phases: phase I (1952-1977): from the first time when Chinese girls participated in beauty pageants, up until the time of reform and opening; phase II (1978-2002): from reform and opening to the re-opening of the Miss Chinese Cosmos Pageant; phase III (2003-2021): to the present.

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The aim of this paper is to present how to free and stretch the palatine vessels from the greater palatine foramen in palatoplasty. After a mucoperiosteal flap is raised, periosteal elevator is passed behind the palatine vessels to detach the periosteum around the vessels. Then, a blunt right-angle instrument is placed behind the palatine vessels, and the vessels are pulled from the foramen in the superior aspect, slightly forward (63 degrees) and medially (19 degrees) according to the direction to the greater palatine canal (GPC).

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This study aimed to provide anatomical data on the platysma for clinical procedures. The authors obtained 25 specimens from 15 adult Korean cadavers (9 men, 6 women; mean age, 72 years; range, 61-85 years). Lines connecting the gonion with the gnathion (G-GN) and the acromial end (acromial end of the clavicle) with the sternal end (sternal end of the clavicle) were used as references.

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This study investigated the thickness of the deltoid muscle and the location of the anterior branch of the axillary nerve (AAN) and posterior circumflex humeral artery (PCHA), with the goal of maximizing the effectiveness of deltoid injections. Forty specimens from 22 adult Korean cadavers were used. A reference line was identified, connecting the anterior point of the deltoid muscle (AP) and the posterior point of the deltoid muscle (PP) on the surface.

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Background and Objectives: The prevalence of obesity among children is increasing and is highlighting many problems. Lack of sleep is common among children and adolescents. Although several studies have investigated sleep duration and overweight and obesity from a sex perspective, data regarding age and sex effects remain limited and inconclusive.

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This study aimed to examine the accurate location and boundary of the parotid gland in Koreans.Forty hemifaces from embalmed cadavers (mean age: 73 years) were studied. The line connecting the porion, gonion, and gnathion was used as a reference line.

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Purpose: As filler procedures have increased in popularity, serious injection-related complications (e.g., blindness and stroke) have also increased in number.

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Article Synopsis
  • The study investigates the design and performance of a Pb(Zr,Ti)O-based piezoelectric accelerometer, focusing on maximizing its electric voltage sensitivity by optimizing design components within a resonant frequency range of 25-40 kHz.
  • Four optimized accelerometer designs were created and tested, demonstrating high reliability and a broad operational frequency range, with mounted frequencies between 16.1-30.1 kHz.
  • A key finding is the inverse relationship between charge sensitivity and resonant frequency, indicating a trade-off in design that affects both performance metrics.
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Purpose: The purpose of this study was to evaluate age-related changes of orbital rim in Koreans and construct a reference data set for the aging phenomenon in Asians.

Methods: Data were collected from computed tomography (CT) scans of orbits and facial bones obtained from 107 Korean (55 males and 52 females) at intervals of 0.60 mm.

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Despite the rapidly increasing demand for accurate ultraviolet (UV) detection in various applications, conventional Si-based UV sensors are less accurate due to disruption by visible light. Recently, Ga(Al)N-based photodiodes have attracted great interest as viable platforms that can avoid such issues because their wide bandgap enables efficient detection of UV light and they are theoretically blind to visible and infrared light. However, the heteroepitaxy of a Ga(Al)N layer on sapphire substrates inevitably leads to defects, and the Ga(Al)N photodiode (PD) becomes not perfectly insensible to visible light.

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To enable selection of a safer suspension site to use in face and neck lifting procedures, the spatial relationship between the tympanoparotid fascia and the great auricular nerve should be clarified. In this study, we aimed to elucidate the position of the tympanoparotid fascia and the pathway of the lobular branch of the great auricular nerve traversing the tympanoparotid fascia. Twenty hemifaces from non-preserved bequeathed Korean cadavers (5 males, 7 females; mean age, 77.

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While seeking to achieve high performances of a bulk piezoelectric acceleration sensor, we investigated the behavior of the design variables of the sensor components and optimized the sensor design using a numerical simulation based on piezoelectric analysis and metamodeling. The optimized results demonstrated that there was an exponential dependency in the trade-off relation between two performance indicators, the electric voltage and the resonant frequency, as induced by the design characteristics of the sensor. Among the design variables, a decrease in the base height and epoxy thickness and an increase in the piezo element's inner diameter had a positive effect on two performances, while the head dimensions (diameter and height) exhibited the opposite effect on them.

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Article Synopsis
  • The study focused on mapping sensory nerve branches to the bursa using mesoscopic dissection and gelatin injection in soft cadavers.
  • Dissection was performed on 18 shoulders from 11 cadavers, with key measurements taken from the greater tubercle of the humerus to identify nerve branch locations.
  • Findings revealed that the anterior branch of the axillary nerve primarily targets the subdeltoid bursa, suggesting implications for reducing shoulder pain after injections.
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The greater sciatic notch is an effective indicator for sexual estimation, which is the initial process to identify unknown skeleton. Visual assessment is the mainstream of analysis methods; however, the subjectivity of researchers is also questioned. Metric method using three-dimensional models reconstructed from radiographic images can ensure reproducible and stable measurement of the greater sciatic notch.

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Various types of suture anchor designs are currently available for rotator cuff repair. The purpose of our study was to investigate the pullout strength of such anchors based on their structural design and the predominant geometric design factors affecting the pullout strength using finite element analysis. Finite element models were constructed using five cadaveric humeri and ten suture anchors with different designs.

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Introduction: The aim of this study was to determine the location and distribution pattern of neurovascular structures superior and inferior to the clavicle by detailed dissection.

Methods: Fifteen adult non-embalmed cadavers with a mean age of 71.5 years were studied.

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Introduction: The aim of this study was to investigate entry points for anterior ankle arthroscopy that would minimize the risk of neurovascular injury.

Methods: Thirty-eight specimens from 21 Korean cadavers (age range from 43 to 92 years, mean age of 62.3 years) were used for the study.

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In the rehabilitation treatment for at-home patients, it is not only costly for a patient to hire a professional therapist or personal trainer, but also time consuming for a therapist or trainer to visit all the patients. To improve the situation, we propose the rehabilitation treatment coach robot which helps the patient to do rehabilitation exercises alone. Designed economically with cheap parts, our robot provides multiple functions: rehabilitation program suggestion, rehabilitation posture correction, and emergency detection.

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Article Synopsis
  • Researchers investigated the "myodural bridge," a fibrous tissue connecting muscles and the spinal dura mater, to see if it exists in other mammals.
  • Dissections and histological analyses across five mammalian orders revealed similar connective tissues, suggesting the bridge is not unique to humans.
  • The findings propose that the "myodural bridge" is an evolutionarily conserved structure, potentially serving important physiological functions across different mammalian species.
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In the last two decades, many studies have focused on the muscles and dense connective tissues located in the suboccipital region. Our study investigated the existence of the second terminations originating from the suboccipital muscles, and the relationship between the variable types of the To Be Named Ligament (TBNL). Anatomical dissection was performed on 35 head-neck specimens.

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Conclusions: The levels of expression of various C-type lectin receptors (CLRs) messenger ribo nucleic acids (mRNAs) were significantly higher in cholesteatomas than in normal skin, suggesting that these CLRs may be involved in the pathogenesis of cholesteatoma.

Objectives: Altered expression of pattern recognition receptors may be associated with immune responses in patients with cholesteatoma. This study assessed the levels of expression of CLR mRNAs in normal skin and in cholesteatoma.

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The arterial system of the gastrointestinal tract has many variations. However, variation in the inferior mesenteric artery (IMA) is less common than for the other abdominal arteries. The case in the present cadaver subject showed a variation in the anatomy of the IMA that differed from those seen in previous studies, because it did not originate from the abdominal aorta and had no branches.

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