大學生의 思考技能의 診斷과 改善에 關한 硏究 : It's Diagnosis and Improvement

朴鎭玹,金武吉,金祥源,朴敬玉,羅東晋 全北大學校 學生生活硏究所 1988 學生生活硏究 Vol.16 No.-

Cognitive psychologists have taken a growing interest in reasoning skills as a primary goal of education. This study was accomplished as a part of elementary research on reasoning skills that have been pointed out as short comings of teaching of thinking. This study was composed of two substudies : one was to explore the ways to analyzing and diagnosing strategies for college students to apply to reasoning and problem solving, and the other was to examine the teachability of a normative strategy of thinking. In the first part of this study, we explored three alternatives to analyze thinking skills : cognitive process analysis, cognitive structure analysis, and cognitive style analysis ; and suggested the integrative use of them in diagnosing the cognitive skill of reasoning and problem solving. Model of cognitive process analysis was to devide the executive process of a specific task into several subtasks or components, measure the amount of effort, response time, and achievement level for each of them, and thereby analyze the strategies of thinking. Model of cognitive structure analysis was to present subject a specific task, instruct him to think aloud those ideas that came into his head during this solution, and analyze his cognitive structure on the base of his thinking-aloud. Finally, model of cognitive style analysis put more stress on tendency in thinking rather than ability in problem solving. In this regard, a alternative presented in this study was to analyze the strategies of thinking according to Baron's cognitive style model, in which process of thinking activity was devided into four phases : search of goal, search of possibility, search of evidence, and use of evidence. For each of them, the amount of time and effort that the indevidual invested and patterns of value that he grant would become criteria for judging the strategies that would become criteria for judging the strategies that he might use in the process of thinking activities for reasoning and problem solving. In result, this should correspond to measure biases on thinking. In general, main biases on thinking could be referred to insufficient search, search biased toward affirmative evidence, and oversensitivity to supporting evidence, which corresponded to compulsiveness vs. reflectiveness, dogmatism vs. open-mindedness, and authoritarianism, from a point of view on cognitive style, respectively. In the second part of this study, we examined the general principles of teaching thinking skills, based on human informations processing, and several training programs that have been developed with the purpose of improvement in thinking and reasoning skills. These programs were discussed into five categories: (1) cognitive operations approaches, (2) heuristics oriented approaches, (3) formal thinking approaches, (4) symbolic facility approaches, and (5) thinking-about-thinking approaches. Within these programs, the expansion of strategies and control of cognitive styles in reasoning and problem solving have become the main targets for improving of thinking skills. Therefore, this study was attempted to develop two training programs―referred to as Problem-Solving Training Program and Reasoning Skill Training Program respectively― for the purpose of improving these skills, and to test the effectiveness of these programs with college students. This study has shown the following facts : 1) It is necessary to teach the basic strategies for solving cognitive tasks of subject matters such as writing and mathematical problem for the purpose of improving thinking skills. 2) It is necessary to change the relatively general tendency in thinking process such as cognitive styles, in parallel with training of strategies. 3) Also, the training programs must consider indevidual defferences in activity parameters such as self-knowledge about problem solving, motivation, belief, etc. These facts seemed to imply the necessity of multi-dimensional approach to training the thinking skills.

풍동실험을 위한 LabVIEW 응용 온라인 계측시스템의 개발

김봉근,장성태,이경용,박운진 한국기술교육대학교 2004 論文集 Vol.10 No.2

On-line measurement systems were newly developed for the performing effective wind tunnel experiments by utilizing the LabVIEW(Laboratory Virtual Instruments Engineering Workbench) system. As a result, instead of post-data-processing procedures based on Fortran programming which was commonly adopted in conventional measurement systems, wind tunnel experiments can be carried out on window-based PC operating systems and thus much time and effort required in analyzing fluid flow field can be successfully reduced. Furthermore, by utilizing the web publishing tool which is provided by the LabVIEW, it is possible to monitor and to control each measurement step via internet web pages from the remote area other than the laboratory in which experiments are carried out.

Enhanced Solubility of the Support in an FDM-Based 3D Printed Structure Using Hydrogen Peroxide under Ultrasonication

Park, Seong Je,Lee, Ji Eun,Park, Jean Ho,Lee, Nak Kyu,Lyu, Min-Young,Park, Keun,Koo, Myung Sool,Cho, Sung Hwan,Son, Yong,Park, Suk-Hee Hindawi Limited 2018 Advances In Materials Science And Engineering Vol.2018 No.1

<P>Fused deposition modeling (FDM), one of the archetypal 3D printing processes, typically requires support structures matched to printed model parts that principally have undercut or overhung features. Thus, the support removal is an essential postprocessing step after the FDM process. Here, we present an efficient and rapid method to remove the support part of an FDM-manufactured product using the phenomenon of oxidative degradation of hydrogen peroxide. This mechanism was significantly effective on polyvinyl alcohol (PVA), which has been widely used as a support material in the FDM process. Compared to water, hydrogen peroxide provided a two times faster dissolution rate of the PVA material. This could be increased another two times by applying ultrasonication to the solvent. In addition to the rapidness, we confirmed that amount of the support residues removed was enhanced, which was essentially caused by the surface roughness of the FDM-fabricated part. Furthermore, we demonstrated that there was no deterioration with respect to the mechanical properties or shape geometries of the obtained 3D printed parts. Taken together, these results are expected to help enhance the productivity of FDM by reducing the postprocessing time and to allow the removal of complicated and fine support structures, thereby improving the design capability of the FDM technique.</P>

Five cases of ocular toxocariasis confirmed by serology

Sung-Pyo PARK,Inwon PARK,Hyun-Young PARK,Soo-Ung LEE,Sun HUH,Jean-Francois MAGNAVAL 대한기생충학열대의학회 2000 The Korean Journal of Parasitology Vol.38 No.4

마이크로파 가열에 의한 폐수슬러지의 탈수특성 향상

박상숙 ( Park Sang-sook ),김태근 ( Kim Tae-geun ),박진 ( Park Jean ) 한국환경기술학회 2001 한국환경기술학회지 Vol.2 No.3

본 연구는 폐수 슬러지의 탈수특성 향상을 위한 것으로 microwave에 의한 열처리실험결과를 제시하였다. microwave에 의한 열처리방법은 탈수케익의 증가가 없는 일반적인 장점 외에 가열시의 승온속도가 빠르고, 가열되는 물체의 두께에 관계없이 전체적으로 고르게 가열되는 특성을 나타냈다. 또한, 가열용기의 내부에 침착되거나 들어붙는 현상이 없고, microwave의 에너지가 가열되는 물질에 직접 전달되기 때문에 비교적 높은 에너지 효율을 가지고 있다. 따라서, microwave는 일반 가열법에 비해 고형물 농도가 높을수록 효과적인 가열 방법임을 알 수 있었다. 또한, 75°C 이상의 가열처리는 미생물의 파괴로 인한 원형질액 누출로 탈수 여액의 COD값이 크게 높아지는 반면, 탈수 cake의 함수율을 크게 낮출 수 있었다. This paper presents an experimental study on the thermal treatment by microwave heating to improve the dewaterbility of waste sludge. Sludge treatment by microwave radiation have several advantages such as fast and homogeneous volumetric heating and no local temperature peaks, no deposition/fouling on the inside of heated walls. Also, microwave energy is immediately used to the substance to be heated. Therefore, experimental this results indicate that microwave can be applied more effectively to the thermal treatment of high solid concentration sludge than low one. COD of filtrate is getting higher because of protoplasm due to the destroyed microbiologies within sludge by thermal treatment above 75℃ but water contents of dewatered sludge cakes can be down very effectively at the temperature.

Comparison of thermal and optical properties of fossil-based PC and bio-based PC

Jung Hyun PARK,Seong Je PARK,Sang Bum LEE,Myung Sool KOO,Sung Hwan CHO,Jean Ho PARK,Min-Young LYU 한국고분자학회 2016 한국고분자학회 학술대회 연구논문 초록집 Vol.41 No.2

Slide Session : OS-ONC-09 ; Oncology : Current Status of Neuropathic Cancer Pain, Its Management and Impact on Quality of Life in Korea; Korean Cancer Study Group Neuropathic Cancer Pain Survey (kcsg Pc13-02)

( So Yeon Oh ),( Sang Won Shin ),( Sun Jin Sym ),( Sang Young Roh ),( Seung Sei Lee ),( So Young Yoon ),( Sun Kyung Baek ),( Keon Uk Park ),( Sang Cheul Oh ),( Jung Lim Lee ),( Jean No Park ),( Joo Se 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1

Background: Diagnosis and management of neuropathic cancer pain (NCP) is diffi cult and complicated. This study investigated current practice in the diagnosis and management of NCP and its impact on quality of life (QoL). Methods: Patients with cancer pain with visual analogue scales (VAS) =1 from 28 hospitals in Korea were enrolled in this cross-sectional observational study. If the patient obtained a score =4 from neuropathic pain diagnostic questionnaire (DN4), he/ she was diagnosed with NCP. The clinical characteristics, pain severity measured by Brief Pain Inventory-Short Form (BPI-SF), and the QoL measured by EuroQoL EQ-5D Health Questionnaire were evaluated. Results: Among 1,505 enrolled patients, 885 patients (58.8%) had moderate to severe pain (VAS=4). Neuropathic cancer pain (when DN4 =4) was identified in 556 patients (36.9%). Among those NCP patients, 254 patients (45.7%) were treated with NCP-targeted therapies (administering opioid or non-opioids analgesics with adjuvant analgesics). Among entire patients, opioids were used in 1,005 patients (66.8%) and 205 patients (13.6%) were not prescribed any analgesic. Anti-depressants and anti- convulsants were prescribed for 91 (6.0%) and 349 (23.2%) patients respectively. Patients with NCP had more severe pain and their pain interference level with daily living was higher than those without NCP. The QoL measured by EQ-5D index score was signifi cantly worse in patients with NCP than those without NCP (Table 1). Conclusions: This large-scaled survey shows that NCP has deteriorative effect on pain and QoL in patients having cancer pain. Current status of management for cancer pain is not satisfactory including NCP in Korea. *This study was partially presented at the MASCC/ISOO International symposium on supportive care in cancer, 26 - 28 June 2014, Miami, USA.

FISH mapping of 5S and 45S ribosomal DNAs in three wild Chrysanthemum species

Yoon-Jung Hwang,Sang Kun Park,So Youn Won,Hyun Hee Kim,Yoon Ha Ju,Hee Kyung Park,Jae Hyeon Jeon,Oh Jean Park,Ki-Byung Lim 한국육종학회 2014 한국육종학회 심포지엄 Vol.2014 No.07

Chrysanthemums (Asteraceae) are important ornamental crops in worldwide that are well known as commercial valuable cultivars for cut flowers, potted plants, and garden flowering plants. Genus chrysanthemum consisted of 41 species that are mostly distributed in East Asia. Chrysanthemum has diverse ploidy levels with the basic chromosome number of x=9 from 2n=2x=18 (diploid) to 2n=10x=90 (decaploid). Fluorescence in situ hybridization (FISH) is a useful tool for studying the distribution of ribosomal DNAs. In this study, we have confirmed ploidy level by chromosome counting method. The somatic metaphase chromosome numbers were observed 2n=2x=18 in Chrysanthemum boreale, and 2n=6x=54 in C. indicum and C. zawadskii. More detailed Karyotype was constructed based on FISH method using 5S and 45S rDNA probes. Two (2) loci of 5S rDNA signals were detected in interstitial region of long arm chromosome in C. boreale and six (6) loci were in C. indicum and C. zawadskii. All of 45S rDNAs were located in terminal region of short arm chromosome which were visualize in six (6) loci in C. boreale and C. indicum and twelve(12) loci in C. zawadskii. In this study, it was the main topic to perform physical mapping of the location of 5S and 45S rDNA. Three of wild chrysanthemum showed variations in number of ribosomal DNAs. In the present investigation will help to further study of genome sequencing project in chrysanthemum.

Backbone ¹H, ¹⁵N, and ¹³C Resonance Assignments of the Helicobacter pylori Acyl Carrier Protein

Park, Sung-Jean,Kim, Ji-Sun,Son, Woo-Sung,Ahn, Hee-Chul,Lee, Bong-Jin Korean Society for Biochemistry and Molecular Biol 2003 Journal of biochemistry and molecular biology Vol.36 No.5

One of the small proteins from Helicobacter pylori, acyl carrier protein (ACP), was investigated by NMR. ACP is related to various cellular processes, especially with the biosynthesis of fatty acid. The basic NMR resonance assignment is a prerequisite for the validation of a heterologuous protein interaction with ACP in H.pylori. Here, the results of the backbone $^1H$, $^{15}N$, and $^{l3}C$ resonance assignments of the H. pylori ACP are reported using double- and triple-resonance techniques. About 97% of all of the $^1HN$, $^{15}N$, $^{13}CO$, $^{13}C{\alpha}$, and $^{13}C{\beta}$ resonances that cover 76 of the 78 non-proline residues are clarified through sequential- and specific-assignments. In addition, four helical regions were clearly identified on the basis of the resonance assignments.

Creation of a Hybrid Scaffold with Dual Configuration of Aligned and Random Electrospun Fibers

Park, Suk-Hee,Kim, Min Sung,Lee, Byungjun,Park, Jean Ho,Lee, Hye Jin,Lee, Nak Kyu,Jeon, Noo Li,Suh, Kahp-Yang American Chemical Society 2016 ACS APPLIED MATERIALS & INTERFACES Vol.8 No.4

<P>A novel hybrid construct was developed by combining aligned fibers (AFs) and random fibers (RFs) to form a scaffolding system. Homogeneous fiber-based structures were fabricated by electrospinning, which produced both random and aligned fiber mats depending on the collection method. The upper part of the scaffold contained an AF layer, which possessed a well-organized configuration that provided uniaxial topographic guidance. For mechanical stability and support, the lower part of the scaffold was composed of an RF layer. Despite the presence of randomly distributed RFs, desirable alignment and differentiation could be achieved in cultured C2C12 myoblasts by controlling the density of AF layer. The fibrous structure of the hybrid scaffold also exhibited high porosity and therefore reasonable permeability. Owing to the structural stability provided by the underlying RFs, the cell-laden fibrous scaffolds were amenable to physical manipulation, such as multilayering. Collectively, the morphological features and manipulable architecture of the developed scaffolds suggest that they would perform well in practical applications.</P>