• Journal of Korean Elementary Science Education
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• v.41 no.2
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• pp.395-417
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• 2022

This study aims to analyze the correlation of creative personality, environment, process, and product as related to scientific creativity for different levels of elementary school students. We evaluated 105 fifth graders' responses to two tests: i) the scientific creativity test for creative process and product and ii) the self-report test for creative personality and environment. In the self-report test, creative personality comprises cognitive and affective personality, and creative environment constitutes home and school environments. To attain a deeper understanding of phenomena that cannot be explained by a quantitative analysis, interviews were conducted with four students who had the highest scores in creative product and four students who had the lowest scores in creative product while having higher-than-average scores in creative process. First, correlation of creative personality and environment were not significant. Second, in the interviews, students who had the highest scores in scientific creativity had common characteristics, namely, the ability to endure current difficulties to achieve future success and the propensity to listen to other people's ideas critically. Third, students who had the highest scores in creativity hailed from families that respected their opinions, whereas students with the lowest scores belonged to families that disregarded or neglected their opinions. Finally, this study specifies the criteria that should be considered for affective and environmental aspects of scientific creativity education.

• Journal of The Korean Association For Science Education
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• v.42 no.1
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• pp.33-49
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• 2022

This study aims to explore, using both quantitative and qualitative data analyzing the structural relationship between creative process and product, the types of elementary students' scientific creativity. For this, 105 fifth-graders responded to a scientific creativity test that assesses creative process and product, and four students who scored the highest were interviewed. In the interview, they were asked about the cognitive process they used in generating the creative product. Then, correlation analysis and structural equation modeling were used, along with the interview data, to type the students. The main findings of the study are as follows. First, the structural equation modeling of creative process and product gave satisfactory results in absolute and incremental fit indexes. Second, among the three components of creative process - knowledge, inquiry skill-observation, and creative thinking skills -, only creative thinking skills had significant effects on creative product. Third, divergent thinking skills had the strongest correlation with the creative product, followed by convergent thinking skills. Associational thinking skills did not have significant correlation. Fourth, elementary students' scientific creativity could be categorized into Creative Type, Useful Type, Original Type, and Non-creative Type, based on their creative product. The Non-creative Type could be further classified into Common Type, Repetitive Type, Non-response Type, Irrelevant Type, and Abstract Type. Fifth, most students used either knowledge or observation in their creative process, making them either Knowledge-oriented Type or Observation-oriented Type. In addition, there were DT Type, DT-CT Type, and DT-CT-AT Type among the students, based on the kinds of creative thinking skills they mainly used in the process. This study provides implications for educators and researchers in scientific creativity education.

• Korean Journal of Culture and Social Issue
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• v.28 no.2
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• pp.83-106
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• 2022

The current study examined the effects of the type and context of self-talk on task performance, task-post emotion, and perceived stress. Participants were 100 undergraduates in Busan. Participants were randomly assigned to one of four the experimental groups that were set by combining the narrative condition (the first-person versus non-first-person) to the content condition (self-reinforcing versus self-critic) to measure their pre and post intervention responses. For the analysis, we performed two-ways analysis of variance using the difference value of dependent variables comparing the pre and post-intervention. As a result of the analysis, we found that content condition of self-talk significantly influenced task performance, task-related confidence, emotion response, and perceived stress. That is, the self-reinforcement self-talk group showed better performance, higher task-related confidence, more positive emotion, lower negative emotion and less perceived stress than the self-critic self-talk group. The contents conditions of self-talk interacted with the narrative condition of self-talk to predict perceived stress, indicating that only non-first person/self-reinforceing self-talk group showed reduced levels of perceived stress.

• Korean Journal of Plant Resources
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• v.35 no.4
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• pp.455-463
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• 2022

The effects of freeze-drying (FD), room-temperature drying (RD), and room-temperature drying after roasting (RDAR) on the volatile organic compounds (VOCs), sugar content, flavonoids, and antioxidant activity of Hallabong peel tea were tested. This experiment was conducted to collect a basic information for developing of peel tea. FD samples showed lower total soluble solids and VOCs than other drying treatments. RDAR samples showed a significant difference in VOCs and visual color of FD samples. The reduced VOCs in FD samples was caused by freeze drying treatment; identical VOCs composition of hallabong peel was detected from condensed ice of freeze-drying machine. Metabolomics analysis showed no difference among three drying treatments. In addition, antioxidant activity and total phenolic compounds were not significantly different from three different drying treatments. Thus, RD or RDAR is a suitable drying method for hallabong peel tea rather than FD method in terms of VOCs and economical reasons.

• Journal of the Korean Society for Library and Information Science
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• v.57 no.1
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• pp.139-160
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• 2023

The research was undertaken to explore the role of the public library as a public sphere. For this, the characteristics and meanings of the library's role were examined by analyzing the public spheres operated by the public library. Data were collected through interviews with librarians at Seongbuk Public Libraries in Seoul. Data collected were coded using NVivo for thematic analysis. As a result of the study, the characteristics and meanings of the library's role in the public sphere were identified in the following five types; 1) A place for meeting, communication and interaction of citizens, 2) Supporting citizen learning and growth through information services and discussion on the subject, 3) Expanding civic participation in the community and strengthen civic power, 4) Strengthening citizens' experience of democracy, 5) Improving citizens' perception of libraries and expanding the library's influence on citizens. In particular, it was found that information services enhance citizen interaction and spread of public opinion on the agenda. The results of this study can be used as a basis for developing and supporting libraries as community public spheres.

• The Korea Journal of Herbology
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• v.38 no.2
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• pp.17-26
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• 2023

Objectives : A persistent inflammatory response can cause diseases such as fibrosis, cancer, and allergies. This study aimed to investigate the anti-inflammatory activity of Curcumae longae Rhizoma and Cinnamomi Ramulus Mixture (CCM) in lipopolysaccharide (LPS)-stimulated RAW264.7 cells. Methods : The total polyphenol and flavonoid contents of CCM were confirmed through an in vitro experiment. Also, radical scavenging activities of 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and Hydroxyl were confirmed. Moreover, ferric reducing antioxidant power (FRAP) activity were confirmed. After, CCM (50, 100, and 200 ㎍/mL) were applied to 0.1 ㎍/mL LPS-stimulated RAW264.7 cells. The levels of nitric oxide (NO) and pro-inflammatory cytokines in the supernatant fraction were determined. Also, the expressions of mitogen-activated protein kinase (MAPK) and nuclear factor-κB (NF-κB) pathways were detected using Western blot. Results : As a result of in vitro experiments, there was an excellent antioxidant activity in CCM-treated cells. In addition, in RAW264.7 cells stimulated with LPS, the increased NO level was inhibited in a concentration-dependent manner by the treatment of CCM. In addition, inflammatory cytokines production were significantly inhibited in a concentration-dependent manner in CCM-treated group. CCM treatment significantly decreased the protein expressions of MAPKs. Moreover, the expressions of NF-κBp65 and cyclooxygenase-2 (COX-2) were significantly decreased when 200 mg/kg of CCM was applied, and phospho-inhibitor of nuclear factor kappa B-α (p-IκBα) and inducible nitric oxide synthase (iNOS) were significantly decreased at all concentrations treated with CCM. Conclusion : Our findings show that CCM exhibited excellent antioxidant activity and exhibited superior anti-inflammatory effect through the MAPKs and NF-κB pathways in LPS-stimulated RAW 264.7 macrophages.

• KIPS Transactions on Computer and Communication Systems
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• v.12 no.6
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• pp.181-188
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• 2023

Block cipher is not expected to be safe for quantum computer, as Grover's algorithm reduces the security strength by accelerating brute-force attacks on symmetric key ciphers. So it is necessary to check the post-quantum security strength by implementing quantum circuit for the target cipher. In this paper, we propose the optimal quantum circuit implementation result designed as a technique to minimize the use of quantum resources (qubits, quantum gates) for SIMECK lightweight cryptography, and explain the operation of each quantum circuit. The implemented SIMECK quantum circuit is used to check the estimation result of quantum resources and calculate the Grover attack cost. Finally, the post-quantum strength of SIMECK lightweight cryptography is evaluated. As a result of post-quantum security strength evaluation, all SIMECK family cipher failed to reach NIST security strength. Therefore, it is expected that the safety of SIMECK cipher is unclear when large-scale quantum computers appear. About this, it is judged that it would be appropriate to increase the block size, the number of rounds, and the key length to increase the security strength.

• Journal of Food Hygiene and Safety
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• v.38 no.4
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• pp.236-245
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• 2023

In this study, the quality safety limit period of seven types of bakery bread was analyzed, and their use-by date was calculated. For evaluating product quality, storage conditions were set as 5, 15, 25, and 35℃ for 50 days, and moisture, microorganisms, sensory characteristics, and dominant bacteria were examined. The quality and safety standards followed the Korea Food Code and Korean industrial standards (KS). The results showed that all products stored at 5℃ satisfied the standard for bacterial count for day 50, but the sensory quality was below the standard level. Samples stored at 15℃ showed high variability from 3-39 days. At 25℃, a quality safety limit period of 2-20 days was set, and one sample was found to have the same shelf life. Bread stored at 35 ℃ had the shortest quality safety limit period. Considering a safety factor of 0.87, a use-by date period of 1.7-13.1 days was calculated. Therefore, setting the use-by date according to the product type is necessary, even for the same product category. Among the bread products sold in bakeries, those managed as room temperature products (1-35℃) can be distributed and stored in a temperature range of up to 35℃. Overall, this study demonstrates the importance of setting a quality retention period based on the product characteristics and carefully considering the safety factor.

• The Journal of the Acoustical Society of Korea
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• v.42 no.5
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• pp.469-490
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• 2023

Survey was carried out on the acoustic outputs from 12 shock wave fields produced by the 10 extracorporeal shock wave lithotriptors whose technical documents are available, among the 33 devices approved by the Ministry of Food & Drug Safety (MFDS).The results show that the acoustic outputs (P+, P-, efd, and E), critical to the therapeutic efficacy and the patient safety, are largely different between the devices. The maximum values of P+, P-, efd, and E vary up to 2.08, 3.72, 3.89, and 15.98 times, respectively. The acoustic output parameters are not thoroughly provided in the technical documents, and some of data (eg. efd) are suspected to be abnormal outside usual ranges. The large device to device differences in the shock wave outputs are likely to undermine equivalence between the ESWL devices approved for the same indication. To verify the reliability of the data in the technical documents of the approved devices and to confirm if the acoustic outputs from the devices in clinical use are the same as those in their technical documents, an authorized test laboratory should be available. A postapproval monitoring led by the regulatory agency is suggested to maintain the acoustic outputs from the ESWL devices that suffer from degrading in performance due to aging.

• Journal of Korean Philosophical Society
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• no.95
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• pp.59-93
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• 2011

Die vorliegende Abhandlung beschäftigt sich mit der Frage, ob Jacque Derrida das Problem des Global-Terrorismus im politisch-theologischen Sinne mit seiner Philosophie der Gastfreundschaft lösen kann. Fur Derrida ist der '11. September' das 'Ereignis', und das Symptom einer autoimmunitären Erkrakung der westlichen Welt. Derrida findet im '11. September Ereignis' die Struktur der Aneignung des Eignen und der Enteignung im Heideggerschen Sinne. Das 'major event' wird nicht in einer vergangenen Aggression bestanden haben, die präsent und wirksam ist und noch schlimmer in der Futur sein wird. Derrida versucht einen philosophischen, politisch-theologischen Ansatz zur Bedingungen der Möglichkeit der absoluten, vollkommenen Auflösung des Globalen Terrorismus zu programmieren. Dafür fordert er das Postulat Verwirklichung des 'Messianischen ohne Messianismus'. Die Gegenüberstellung zwei politischer Theologien zwischen der Europäischen Demokratie und der Islamischen Vereinigten Staaten kann erlöst werden, wenn die 'neue religiöse Spiritualität', die gegenüber der dogmatischen Religionswahrheit frei ist, mit der 'Wiederkehr der Religion' im echten Sinne vorkommt. In der 'Neuen Religion' Derridas ist der Begriff der 'Gastfreundschaft' wichtiger als der der 'Toleranz', den er als 'abrahamitisch' definiert. Die von Derrida postulierte neue Religion ist eine offene Religion, in der das Unvergebbare unbedingt zu vergeben ist. Ihre politische Transformation ist der Begriff der 'Neuen Europäischen Gemeinschaft' und des 'Anderen Kaps'. Derrida postuliert diese neue Idee des Kosmopolitismus als die notwendige Bedingung der vollkommenen Auflösung des autoimmunitären Global-Terrorismus.