• The Journal of Korean Association of Computer Education
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• v.22 no.5
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• pp.1-9
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• 2019

A physical computing education is helpful for enhancing learners' computational thinking, creativity, and collaborative problem solving ability and so on. Recently, it is being actively promoted according to the software education policy and the 2015 revised national curriculum in Korea. This study describes a meta-synthesis of research on physical learning education that investigates the extent to which there is evidence of benefits and challenges for physical computing education. 37 articles were identified, and 20 articles met the inclusion criteria. The synthesis resulted in the list of purposes, teaching and learning methods, and physical computing tools, and benefits of physical computing education.

• Korean Management Science Review
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• v.12 no.1
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• pp.61-77
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• 1995

The Ergonomic Workload Stress Index (EWSI) was developed to predict the existence and level of the ergonomic workload stress in the workplace. To determine the validity of model, the values of the EWSI and two other similar techniques, Job Severity Index (JSI) and Physical Work Stress Index (PWSI) were evaluated in two actual industrial environments. The results from the validation study provide further substantial evidence that two techniques, JSI and PWSI, which have similar objective considerations, are significantly associated with the value of the EWSI among the employees participating in the experimentation.

• YAKHAK HOEJI
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• v.18 no.1
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• pp.20-28
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• 1974

Physical studies of ageing inhibition of aluminum hydroxide gel were carried out. Sorbitol, mannitol and fructose were found to be an ageing inhibitor of the aluminum hydroxide gel. IR spectra and DTA curves showed that the ageing products of the gel by sorbitol orl mannitol were monohydrous alumina. This differs from hydrated hydrous alumina of other ageing products. This evidence indicates that sorbitol and mannitol prevent the hydrous alumina from its hydration.

• Archives of Pharmacal Research
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• v.8 no.4
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• pp.249-252
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• 1985

$N_{9}$-Formylharman, 1-carbomethoxy-$\beta$-carboline and perlolyrine with an unidentified alkaloid ($C_{10}H_{13}NO_{2}$, $M^{+}$ 179.094) have been isolated from the fruits of Lycium chinense Miller (Solanaceae) and characterized on the basis of chemical and physical evidence.

• Proceedings of the Microbiological Society of Korea Conference
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• 1998.04a
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• pp.55.1-55.1
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• 1998

• 한국논리학회:학술대회논문집
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• 2008.07a
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• pp.73-92
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• 2008

Describing a physical system in idealized terms involves making literally false claims about the system. Given this, it is puzzling that justified beliefs about physical systems can be formed by starting with idealized descriptions and then performing mathematical calculations. I argue that this puzzling aspect of idealizations cannot be easily removed by introducing talk of approximations. I go on to develop an account of how this curious feature of idealizations is to be understood. My account requires us to reassess what precisely we take the laws of physics to be saying, and also has consequences concerning the kind of evidence we can have for thinking that mathematics is the 'language of nature'. Finally, some critical comparisons are made with the so-called model-based account of scientific laws developed by Cartwright and Giere.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.25 no.1
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• pp.20-23
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• 2014

Age-related changes in larynx can have a direct impact on voice quality and general comfort level. Observations of vocal aging have spanned perceptual, acoustic, aerodynamic, physical, electromyographic (EMG) and histological levels. Evidence of differential vocal aging in relation to gender and physical condition has been reported. Perceptual, acoustic, aerodynamic, kinematic, EMG and histological data document age-related changes in laryngeal structure and function with advancing age. These changes contribute to a functional age-related impact of vocal hypofunction or compensatory hyperfunction. This review will focus on the current understanding of the clinical and cellular changes in the larynx that lead to presbyphonia.

• Journal of the Korean Academy of Clinical Electrophysiology
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• v.1 no.2
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• pp.69-76
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• 2003

The purpose of this study was to determine the effect of transcutaneous electrical nerve stimulation(TENS) on the alteration of pressure pain threshold of myofascial trigger points. We used fifty nine patients with upper trapezius mayofascial pain syndrome. Participants classified according to each group in conventional TENS(high rate, low intensity) and acupuncture like TENS(low rate, high intensity). The test was measured continuously pre test, post-test by algometer. The following results were obtained; 1. Pressure pain threshold were significantly increased in all groups(p<.001). 2. In comparison between groups, pressure pain threshold were not significantly differenced. These results lead us to the conclusion that each method by TENS were significantly increased pressure pain threshold of upper trapezius trigger points. Therefore, a further direction of this study will be to provide more evidence that TENS method have an effect on pressure pain threshold of myofascial trigger points.

• Korean Journal of Veterinary Research
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• v.42 no.3
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• pp.393-396
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• 2002

A 5 kg, seven-month-old, female Pekingese dog was presented to Seoul National University Veterinary Medical Teaching Hospital with the history of anorexia and exercise intolerance. Muffled cardiac sound and mild abdominal pain were detected in the physical examination. In positive contrast peritoneography, contrast medium was observed in enlarged pericardial sac through the diaphragm. According to the history taking, physical examination and contrast radiographic study, the dog was diagnaosed congenital peritoneopericardial diaphragmatic hernia. Following midline celiotomy, herniated falciform ligament and greater omentum were repositioned to abdrminal cavity. The diaphragmatic defect was closed with absorbable suture. Clinical signs related to peritoneopericardial hernia disappeared immediately after surgical treatment. There had been no evidence of recurrence of the peritoneopericardial hernia for 1 year.

• Korea-Australia Rheology Journal
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• v.11 no.3
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• pp.169-195
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• 1999

An electrorheological fluid (ERF) is typically a suspension of semi-conducting solid particles dispersed in an insulating carrier fluid, and shows a dramatic change in rheological properties when an external electric field is applied. This rapid and reversible change in flow properties has potential application in many electronically controlled mechanical devices, but the development of efficient devices and optimal materials for ERF is still hindered by incomplete understanding of the fundamental physical mechanisms involved. In recent years there have been considerable advances In relating microstructural models to the rheological behaviour, and these will form the basis of this review. Results of the theoretical calculations and simulations will be compared to the key experimental evidence available. An overview of the fundamental physical concepts behind electrorheological fluid behaviour will also be presented.