• MALSORI
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• no.60
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• pp.29-45
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• 2006

We investigated whether the first syllable plays an important role in lexical access in Korean visual word recognition. To do so, one lexical decision task (LDT) and two form primed LDT experiments examined the nature of the syllabic neighborhood effect. In Experiment 1, the syllabic neighborhood density and the syllabic neighborhood frequency was manipulated. The results showed that lexical decision latencies were only influenced by the syllabic neighborhood frequency. The purpose of experiment 2 was to confirm the results of experiment 1 with form-primed LDT task. The lexical decision latency was slower in form-related condition compared to form-unrelated condition. The effect of syllabic neighborhood density was significant only in form-related condition. This means that the first syllable plays an important role in the sub-lexical process. In Experiment 3, we conducted another form-primed LDT task manipulating the number of syllabic neighbors in words with higher frequency neighborhood. The interaction of syllabic neighborhood density and form relation was significant. This result confirmed that the words with higher frequency neighborhood are more inhibited by neighbors sharing the first syllable than words with no higher frequency neighborhood in the lexical level. These findings suggest that the first syllable is the unit of neighborhood and the unit of representation in sub-lexical representation is syllable in Korea.

• Journal of the Korean Society for Precision Engineering
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• v.29 no.9
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• pp.1035-1040
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• 2012

Deep brain stimulation (DBS) of the subthalamic nucleus (STN) has been found to be effective treatment of Parkinson's disease (PD). This study aims to evaluate the effect of DBS for rigidity during DBS surgery. Six Parkinsonian patients who received STN-DBS surgery participated in this study. The examiner imposed flexion and extension of a patient's wrist randomly. Resistance to passive movement was quantified by viscoelastic properties (two damping constants for each of flexion and extension phase and one spring constant throughout both phases). All Viscoelastic constants decreased by DBS (p<0.01). Specifically, reduction in damping constant during flexion ($B_f$) was greater than those of damping constant during extension ($B_e$) and of spring constant (p<0.05). $B_f$ would be appropriate for evaluation of effect of DBS for rigidity during DBS surgery.

• Journal of the Korean Society of Food Culture
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• v.30 no.1
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• pp.86-96
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• 2015

Onions contain antioxidant flavonoids and bioactive sulfur compounds. These substances are more abundant in the peel than in onion flesh. For this reason, whole onions including peels were added to soy milk to produce soy milk with whole onions (SWO), whereas peeled onions were added to soy milk to produce soy milk with peeled onions (SPO). The functional and antioxidant properties of these two kinds of soy milk were then analyzed and compared. Compared to control soy milk (CS) without onion powder, treated samples (to which freeze dried onion powder was added at 1.4, 1.6, 1.8, and 2.0%, respectively) showed significantly increased amounts of quercetin, isoflavone, and total phenol (p=0.05). The magnitude of the increase rose as the amount of added onion powder increased and when onion powder contained onion peels. With regards to antioxidant activity (DPPH and ABTS), SWO showed a greater value than SPO. The sensory evaluation scores of SWO and SPO were lower than CS for roughness and swallowing, as adding onion powder increased solid contents and viscosities. However, higher overall acceptability were obtained 1.8SPO and 1.8SWO.

• Journal of Korean Public Health Nursing
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• v.32 no.3
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• pp.438-450
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• 2018

Purpose: The purpose of this study was to compare the differences in fatigue, sleep quality and interpersonal relationship stress levels between nurses in comprehensive nursing care wards and in general wards. Methods: Data were collected using self-reported structured questionnaire from 14 August to 17 September 2018. The participants were 220 nurses from 6 hospitals in Seoul and Gyeonggi-do. The data were analyzed using the IBM SPSS 23.0 program, descriptive statistics, t-test, ${\chi}^2-test$, Fisher's exact test, and Pearson's correlation coefficient. Results: The subjects' fatigue, sleep quality, and interpersonal relationship stress were not significantly different between the comprehensive nursing care services wards and the general wards. The interpersonal stress with a superior was statistically higher among general wards than comprehensive nursing care services wards. The relationship stress between patient and caregiver was higher in comprehensive nursing care services wards than in general wards. Conclusion: A follow-up study is needed to develop a strategic method to reduce interpersonal stress in nurses.

• Korean Journal of Materials Research
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• v.29 no.6
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• pp.371-377
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• 2019

A flexible piezoelectric energy harvester(f-PEH) that converts tiny mechanical and vibrational energy resources into electric signals without any restraints is drawing attention as a self-powered source to operate flexible electronic systems. In particular, the nanocomposites-based f-PEHs fabricated by a simple and low-cost spin-coating method show a mechanically stable and high output performance compared to only piezoelectric polymers or perovskite thin films. Here, the non-piezoelectric polymer matrix of the nanocomposite-based f-PEH is replaced by a P(VDF-TrFE) piezoelectric polymer to improve the output performance generated from the f-PEH. The piezoelectric hybrid nanocomposite is produced by distributing the perovskite PZT nanoparticles inside the piezoelectric elastomer; subsequently, the piezoelectric hybrid material is spin-coated onto a thin metal substrate to achieve a nanocomposite-based f-PEH. A fabricated energy device after a two-step poling process shows a maximum output voltage of 9.4 V and a current of 160 nA under repeated mechanical bending. Finite element analysis(FEA) simulation results support the experimental results.

• Journal of Korean society of Dental Hygiene
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• v.22 no.1
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• pp.55-61
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• 2022

Objectives: The aim of this study was to investigate the association between depression, anxiety, and COVID-19 with regard to dental hygienists. Methods: A questionnaire survey on depression and anxiety was conducted on 189 dental hygienists from dental hospitals and clinics in the Daegu-Gyeongbuk area. Results: The overall prevalence of depression was 69.8% and that of anxiety was 53.4%. The aspect of depression was heavily influenced by past experience with COVID-19 related quarantine and contact with a confirmed patient. The prolonged pandemic was observed to have exerted a greater impact on depression and anxiety (p<0.05). Conclusions: Depression and anxiety seem to be related to COVID-19 related factors among dental hygienists. Dental hospitals and clinics should monitor the level of depression and anxiety of dental hygienists who are at an elevated risk of COVID-19.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.56 no.4
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• pp.449-461
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• 2023

The aim of this study was to conduct an ecosystem-based fishery risk assessment of tuna fisheries in the Western Indian Ocean. We selected gillnet, purse seine, hand line, baitboat, and longline fisheries as the target fisheries method, and selected longtail tuna (Thunnus tonggol), narrow-barred Spanish mackerel (Scomberomorus commerson), kawakawa (Euthynnus affinis), skipjack tuna (Katsuwonus pelamis), yellowfin tuna (T. albacares), bigeye tuna (T. obesus), albacore tuna (T. alalunga) and swordfish (Xiphias gladius) as the target species. The risk score for the size at the first capture in sustainability objective was high, especially, for the purse seine and baitboat fisheries using the fish aggregating devices (FADs). The risk score for the bycatch in the biodiversity objective was high for the gillnet fishery, and the gillnet fisheries using FADs showed high risks for the habitat quality objective due to the loss of the fishing gears. With regards to the socio-economic benefits objective, the risk score of the sales profits was low due to high sales of the tuna fisheries. The ecosystem risk score in the Western Indian Ocean was estimated to be moderate, although management is required for some of the indicators that have high-risk scores.

• Human Ecology Research
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• v.62 no.1
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• pp.47-58
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• 2024

This study examined the mediating effect of children's school adjustment on the relationship between a creative school environment and children's happiness. For this purpose, an analysis was performed of data from the 12th Panel Study on Korean Children conducted in 2019. The participants were 1,393 fifth-grade elementary school students. Data were analyzed using descriptive statistics, one-way ANOVA, Pearson correlation analysis, confirmatory factor analysis, and structural equation modeling using SPSS 25.0 and AMOS 23.0 programs. The principal results were as follows. Firstly, there were significant positive correlations among creative school environment, children's school adjustment, and happiness. Secondly, the creative school environment significantly affected children's school adjustment and happiness. Thirdly, children's school adjustment had a positive effect on their happiness. Fourthly, the creative school environment had an indirect effect on children's happiness through school adjustment. The results thus demonstrate that school is a social environment that strongly influences children's happiness. Therefore, to improve children's school happiness, it is essential to consider the relationship between a creative school environment and school adjustment.

• Archives of Obesity and Metabolism
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• v.3 no.1
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• pp.14-26
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• 2024

Ultra-processed foods, falling under group 4 of the Nova classification system, are manufactured from processed food ingredients such as oils, fats, sugars, starch, and protein isolates, containing minimal to no whole food. They commonly incorporate flavorings, colorings, emulsifiers, and various cosmetic additives to enhance their palatability. Ultra-processed foods have become increasingly prevalent in contemporary society owing to their convenience, affordability, extended shelf life, and enhanced taste and aroma through additives. This surge in the consumption of ultra-processed foods has sparked discussions regarding its adverse health effects. Numerous studies have highlighted that an increased intake of ultra-processed foods elevates the risk of metabolic disorders, such as cardiovascular diseases, obesity, and diabetes, along with an increased risk of various cancers. Moreover, its association with an increased mortality risk underscores the importance of recognizing that opting for these foods based solely on taste and convenience is risky. Thus, by recognizing dietary habits as modifiable factors that can prevent health issues, maintaining a balanced diet with diverse nutrient intakes is crucial for overall health. Therefore, raising awareness and understanding of ultra-processed food consumption can significantly contribute to promoting healthy lifestyles.

• Journal of agricultural medicine and community health
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• v.28 no.1
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• pp.93-106
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• 2003

Objectives: This study was conducted to investigate the treatment status and its related factors of the rural hypertensives. Methods: A questionnaire survey was performed to 618 rural hypertensives during September, 2002. Results: The proportion of those who were compliant to the antihypertensive medication was 68.9%. The compliance rate to the antihypertensive medication was significantly related with sex and economic status(p<0.05). That is, if they were female, higher economic level, the regular antihypertensive medication rate was higher. The regular antihypertensive medication rate was higher when they had higher knowledge for hypertension, higher severity for hypertension of him or her(p<0.01). And the compliance rate to the antihypertensive medication was significantly related with hypertensives' own explanatory model for hypertension(p<0.01). The rate of drug use except antihypertensives was 12.5%. The rate of drug use except antihypertensives was higher when they experienced side effects of antihypertensive drug and when they had irregular medication for antihypertensive drug(p<0.01). The rate of medical equipment use was 18.9%. The utilization rate of medical equipment such as jade mat, germanium material was significantly related with age, experience of side effects of antihypertensive drug, medication status for antihypertensive drug(p<0.05). The rate of folk therapy use was 16.2%. The rate of folk therapy use was higher when they had no family, when they had knowledge about hypertension on the average, when they had hypertension over 10 years(p<0.05), and when they experienced side effects of antihypertensive drug and when they had irregular medication for antihypertensive drug(p<0.01). The rates of drug use except antihypertensives, medical equipment use, and folk therapy were significantly related with hypertensives' own explanatory model for hypertension(p<0.05). Conclusions: On consideration of above findings, it would be essential to provide knowledge about hypertension and its treatment, and severity of hypertension complications through health education.