• The Mathematical Education
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• 제44권3호
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• pp.375-396
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• 2005

This paper reports on the main results of 3 study that compared students' beliefs, skills, and understandings in an innovative approach to differential equations to more conventional approaches. The innovative approach, referred to as the Realistic Mathematics Education Based Differential Equations (IODE) project, capitalizes on advances within the discipline of mathematics and on advances within the discipline of mathematics education, both at the K-12 and tertiary levels. Given the integrated leveraging of developments both within mathematics and mathematics education, the IODE project is paradigmatic of an approach to innovation in undergraduate mathematics, potentially sewing as a model for other undergraduate course reforms. The effect of the IODE projection maintaining desirable mathematical views and in developing students' skills and relational understandings as judged by the three assessment instruments was largely positive. These findings support our conjecture that, when coupled with careful attention to developments within mathematics itself, theoretical advances that initially grew out research in elementary school classrooms can be profitably leveraged and adapted to the university setting. As such, our work in differential equations may serve as a model for others interested in exploring the prospects and possibilities of improving undergraduate mathematics education in ways that connect with innovations at the K-12 level

• Journal of The Korean Association For Science Education
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• 제32권1호
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• pp.1-14
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• 2012

The purpose of this study is to analyze the student's modeling patterns of modeling experiments. The 1st year students who were taking the general chemistry laboratory course performed three modeling inquiry experiments and submitted laboratory reports. Students expressed the model in a formula form and/or a written form. Student's modeling patterns could be classified by five types; 'Refining tentative modeling', 'Accepting alternative modeling', 'Discarding tentative modeling', 'Failing to find causes', 'Disbelieving results'. This modeling experiment provides for students the opportunity for understanding how a scientific model is created and what the nature of scientific modeling is.

• Korean Institute of Interior Design Journal
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• 제18권3호
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• pp.102-113
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• 2009

The SARS virus began to appear and spread in North America and Southeast Asia in the early 2000' s, infecting and harming many people. In the process of examining the causes for the virus, studies on the airborne SARS virus and the way it spread were carried out mainly in the medical field. In the field of architecture, studies were done on the diffusion of air pollutants in buildings using gases such as $CO_2$, $N_2O$, or $SF_6$, but research on virus diffusion was limited. There were also explanations of only the diffusion process without accurate information and discussion on virus characteristics. The aim of this study is to analyze the physical characteristics of airborne virus, consider the possibility of using coupled analysis model and tracer gas for analyzing virus diffusion in building space and, based on reports of how the infection spread in a hospital where SARS patients were discovered, analyze infection risk using tracer gas density and also diffusion patterns according to the location, shape, and volume of supply diffusers and exhaust grilles. This paper can provide standards and logical principles for evaluating various alternatives for making decisions on vertical or horizontal ward placement, air supply and exhaust installation and air volumes in medium or high story medical facilities.

• Korean journal of applied entomology
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• 제62권2호
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• pp.89-93
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• 2023

This paper reports new hosts for three ichneumonids (Apophua evanescens evanescens, Teleutaea minamikawai, and Trathala flavoorbitalis) from South Korea. These three species were discovered from the lepidopteran pupae, viz., Cleora leucophaea (Butler) (Geometridae), Adoxophyes honmai Yasuda (Tortricidae), and Pyrausta phoenicealis (Hübner) (Crambidae), respectively. Among these, the lepidopteran family Geometridae and Crambidae are also newly recorded as host groups for the genera Apophua and Trathala.

• Korean journal of communication and information
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• 제34권
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• pp.161-195
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• 2006

Standing to sue has become one of the most important and controversial issues in suits between the press and the victims injured by the press reports. Even thought Korean law was patterned after the European legal system, there is no denying that the Korean Constitution was influenced by that of the United States. The judicial system was also influenced by its counterpart in the United States. The doctrine of standing to sue has plagued the U.S. Supreme Court for several decades. The traditional test of standing in the federal courts was, at the beginning of the century, whether the interest asserted by the plaintiff amounted to a 'legal right', entitled to the protection of the common law. In recent years, the Supreme Court seems to have settled on a two-tiered method for determining whether a plaintiff has standing to sue in federal court. The first level of inquiry is the constitutional core, and the second is the judicially imposed prudential limitations. The purpose of this study is to find out the doctrine of standing in the legal proceedings caused by the press reports. The press needs to internally transform as well to prevent legal dispute, enforcing confirmation when collecting news materials and building up the device for pre-examining the news. The press is also requested to help sincerely the victim recover, realizing that they waste their reputation and credit not to mention a lot of time and monet during the legal dispute.

• 한국HCI학회:학술대회논문집
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• 한국HCI학회 2009년도 학술대회
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• pp.926-932
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• 2009

Recently many research reports on effective use of mobile devices for museums to provide information on displayed artifacts providing individualized learning space, collaborative learning, and discovery learning, Such devices have many possibilities to support learning as a participatory media and social network. Mobile devices are used, however, limited for its usability and lack in providing expected learning experiences. It offers one-way interaction and they are often limited in providing customized services for different patrons to experience learning and entertainment. In this research, we have adopted user centered design approach to identify the needs and possible usage of PDA system in the museum. Research methods include contextual observation and inquiry with symbolic interactionism for qualitative research and its epistemology. We have developed conceptual model with scenario and storyboard method, and developed vertical prototype with Flash.

• Journal of Engineering Education Research
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• 제13권6호
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• pp.87-98
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• 2010

In this research, we analyzed the effects of the independent research program on the educational experience of undergraduate students in a research-centered university setting. The independent research program was developed to provide undergraduate students with opportunities to engage in self(student)-initiated, self-regulated and self-responsible research projects. We hypothesized that outcomes of the program would be utilized as a baseline information in formulating the strategies for improvement of the undergraduate curriculum. Eighty three undergraduate students participated in the program during the period of 2003-2009. In order to evaluate results of the program, we carried out survey and in-depth interviews with the participants. According to the participant reports, the independent research program has helped them to develop self-managed research abilities and problem solving skills. They also indicate that the program has offered them the opportunities to survey the various major fields transcending different domains, so as to help them to contemplate on their future career choices. We suggest that such information may provide an essential guideline for developing an innovative undergraduate curriculum.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제12권2호
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• pp.944-951
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• 2011

This paper reports results of a joint experimental and numerical investigation of the causes of near-transducer errors due to the combined effect of acoustic and ADCP-induced flow disturbance near the ADCP transducer. The laboratory study focused on an isolated ADCP (deployment without boat). Measurements of the flow disturbance produced by the ADCP in vertical and horizontal planes were obtained acquiring measurements with an Acoustic Doppler Velocimeter (ADV). Concurrent measurements with ADCP and ADV were made to infer additional near-transducer effects in the ADCP measurements. The numerical investigation was designed to extend the inquiry on the near-transducer potential errors when the ADCP is deployed from a boat. Large Eddy Simulation (LES) was conducted to obtain the extent and magnitude of the disturbances induced by the drag acting on a boat-mounted ADCP and by the blockage effect of the instrument and boat. It is found the velocities measured by the ADCP are biased low and differ substantially from the undisturbed channel flow solution within a limited layer beneath the instrument.

• Journal of Construction Engineering and Project Management
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• 제9권2호
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• pp.1-24
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• 2019

Poor project performance has been noted as the bane in the construction industry globally. This paper sought to investigate, by way of literature, the performance patterns of construction projects in Kenya since independence (1963-2018). This was informed by reports of undesirable project performance in the industry. This descriptive study used available studies previously done in this subject area. In sum, literature is replete with evidence on a myriad of challenges facing the execution of projects. The study established that generally, the project performance is poor and has assumed a chronic trajectory spanning over five decades. On average, the findings reveal that 35-60% of projects initiated in Kenya face cost overruns while time overrun is most severe with 35-73% projects overrunning their schedule. In addition, the findings problematize the issue of plurality of performance measurement regimes in the construction industry. Here, it was observed that no singular construct exists to objectively measure the various facets that constitute the 'health' of a project. This paper has contributed to the body of knowledge by examining the performance patterns in Kenya for over fifty years while at the same time identifying the bottlenecks inherent in projects execution. Importantly, the conceptual performance efficiency framework derived in the current study presents a paradigm shift in the monitoring and evaluation of projects. To this end, an in-depth analysis is recommended on the interaction of efficiency enablers in the buildup of performance efficiency index (PEI). Similarly, a further inquiry is recommended on the integration and impact of the proposed framework in the management of projects.

• The Journal of Internal Korean Medicine
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• 제40권3호
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• pp.491-498
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• 2019

Objectives: This study aimed to put clinical emphasis on the importance of considering medical precautions, such as drug history and a possible infection, when treating elderly patients. Methods: We closely observed two elderly female patients aged 79 and 76 who had been hospitalized for the treatment of anorexia at the Department of Hepato-Hemopoietic System, Kyung Hee University Korean Medicine Hospital in April 2018 for 5 and 9 days, respectively. Results: Through an elaborate medical investigation including a detailed inquiry and laboratory examinations, modifying some drugs and treating a urinary tract infection were preferentially needed to treat these two patients. In the first case, her overall symptoms, including anorexia, were improved after taking Dansambohyeol-tang combined with three types of antacids adjusted by holding 10 drugs in total, including nonsteroidal anti-inflammatory drugs that mainly causing chronic gastric ulcer. In the second case, the urinary tract infection was detected by blood test and urine analysis during the hospitalization period. After taking Geummogpaljeong-san and antibiotics for the treatment of the infection, the chief complaints including anorexia and the negative reaction to nitrite in the urinary analysis were improved. Conclusion: Considering the clinical precautions, including medications and infection possibility, is important especially when treating elderly patients.