• Journal of the Korean Physical Society
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• v.73 no.10
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• pp.1479-1485
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• 2018

A number of experiments have been performed on light slowing and stopping in the electromagnetically induced transparency (EIT) media of hot atomic gases where the Doppler-shift may add detunings to the field frequencies in an inhomogeneous fashion. We provide here a theoretical analysis as to the effect of such a Doppler-broadened environment on the dynamics of the system in comparison to a cold atomic medium. We will show that one of the most critical factors in the formation of a stationary light pulse is the enhancement of the excited-state decay rate caused by the collisions between the atoms of the medium and the molecules of the buffer gas.

• International Journal of Computer Science & Network Security
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• v.22 no.5
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• pp.255-265
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• 2022

Educational programs for students with intellectual disabilities have undergone drastic changes in pursuit of the general curriculum. Accordingly, teachers in various fields, including mathematics, strive to find effective methods that enhance learning. The objective of this systematic review is to examine the field of teaching mathematics to students with intellectual disabilities to investigate relevant effective teaching strategies and required teaching skills. To achieve this goal, studies published during the period 2018-2021 were reviewed. Findings indicate the inclusion of nine studies that met the inclusion criteria out of 55 studies. The included studies found that the system of least prompts (SLP) in conjunction with feedback and error correction, and schema-based instruction are generally the most effective strategies in teaching mathematical skills to students with intellectual disabilities. Addition is the most targeted skill, followed by subtraction and algebra problem solving. The least targeted skills are multiplication, recognition of geometric shapes, calculating price after discount, rapid recognition of numbers, and rapid problem solving. The paper provides recommendations and suggests venues of future research.

• International Journal of Computer Science & Network Security
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• v.22 no.3
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• pp.292-302
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• 2022

The radar tomographic imaging is based on the Radar Cross-Section "RCS" of the materials of a shape under examination and investigation. The RCS varies as the conductivity and permittivity of a target, where the target has a different material profile than other background objects in a scene. In this research paper, we use Hierarchical Performance Modeling "HPM" and a framework developed earlier to determine/spot bottleneck(s) for pattern recognition of materials using a combination of the Single Layer Perceptron (SLP) technique and tomographic images in radar systems. HPM provides mathematical equations which create Objective Functions "OFs" to find an average performance metric such as throughput or response time. Herein, response time is used as the performance metric and during the estimation of it, bottlenecks are found with the help of OFs. The obtained results indicate that processing images consumes around 90% of the execution time.

• Korean journal of food and cookery science
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• v.27 no.5
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• pp.557-565
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• 2011

The objectives of this study were to investigate the physicochemical characteristics of soybean leaves in different cultivars and to develop a soybean curd prepared with soybean leave powder as a functional food. Four cultivars (Daewonkong leaf, Daepungkong leaf, Hwangguemkong leaf, and Seoritae leaf) were selected for this experiment. A significant difference was observed in the proximate composition of soybeans leaves (p<0.05). Soybean leaves had the highest content of carbohydrates. The mineral composition and isoflavone content in soybean leaves were significantly different among the cultivars (p<0.05). In particular, Daepongkong leaf had the highest content of genistein, daidzein, and total isoflavones. This study was also conducted to determine the quality characteristics of a soybean curd developed from daepongkong leaf with various concentrations (0, 0.1, 0.2, and 0.3%) of soybean leaf powder (SLP). The soybean curd yield rate increased according to the level of SLP added, whereas the L and a color values decreased. In the sensory evaluation, intensity scores for color, after taste, leafy taste, and chewiness were highest for the 0.3% soybean curd. The soybean curd with 0.2% SLP soybean milk attained the highest overall acceptability score. These results showed that soybean leaf was preferred over soybean curd containing 0.2% soybean leaf powder.

• Journal of KIISE:Computing Practices and Letters
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• v.13 no.1
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• pp.59-73
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• 2007

Although there exist many middlewares such as Havi, Jini, LonWorks, UPnP, and SLP, new middlewares specialized for diverse information appliances are expected to appear continuously as home networks evolve. In this paper, we examine an integrated architecture for supporting interoperability among heterogeneous middlewares under home network, we also propose and implement a scenario-based user-oriented integrated architecture for efficient home automation which is different from existing methods. HOMI(Homenetwork Middleware for Interoperability) architecture proposed in this paper provides interfaces that assist users with designing and modifying desirable scenarios using a script interpreter language HOMIL(HOMI Language). Different from an existing integrated middleware architecture, HOMI improves efficiency and convenience of interoperation between heterogeneous appliances for home automation allowing users to design and organize scenarios through these interfaces. HOMI classifies interoperation services into time contort, synchronization context, and asynchronization context and helps to execute next services considering contexts when a specific event occurs. Applying modified scenarios immediately to home network environment, HOMI provides users with seamless services without installing new applications, updating the server, or rebooting in order to adopt new scenarios. Lastly, distribution agents into several devices, we solved the overhead problem occurred in a centralized architecture for integrated middleware.

• The Journal of the Korea Contents Association
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• v.20 no.1
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• pp.553-561
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• 2020

The purpose of this study was to identify the effects of an immersive virtual reality-based simulation learning program(IVR-SLP) on the communication competence and learning attitude of students with intellectual disabilities. To do this, 23 participants with intellectual disabilities were selected from 2 special schools. 11 students were placed in an experimental group and 12 students in a control group. An IVR-SLP, focusing on possible situations in a convenience store, was implemented within the experimental group and a traditional intervention program was implemented within the control group. The programs were conducted 5 times per week for 4 weeks and each session lasted approximately 40 minutes. Evaluations were carried out by using a pre- and post- test, and the results of the evaluation were analyzed using the independent t-test. The results of this study indicated that the communication competence of the experimental group showed greater improvement than that of the control group. In addition, the learning attitude of the experimental group became more positive than that of the control group. This implies that the immersive virtual reality-based simulation learning program can be a very effective tool for teaching language and communication skills to students with intellectual disabilities.

• Journal of Korea Water Resources Association
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• v.32 no.2
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• pp.111-120
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• 1999

The relationship between EI Nino-Southern Oscillation(ENSO) and drought in Korea is investigated using the cross correlation analysis. In this paper, Palmer Drought Severity Index(PDSI) is used as an index of drought and nine ENSO indicators are used. To obtain PDSI for Korea, the PDSI equation is derived using monthly precipitation and temperature in Korea. In addition, ENSO composite percentile analyses for PDSI, precipitation and streamflow in Korea are performed to verify the results of the cross correlation. Results of the cross correlation show that the link between drought in Korea and ENSO is statistically significant with 6% of the variance in PDSI for Korea explained by ENSO. The PDSI is negatively correlated with the equatorial Pacific Sea Surface Temperature and the Sea Level Pressure(SLP) at Darwin leading by about 16 months. However, the relationship of the PDSI with the Southern Oscillation Index and the SLP at Tahiti is positive correlation. The ENSO composite percentile analyses show that drought, precipitation and streamflow in Korea are associated with ENSO during 6 months from December of the ENSO ending year

• The Journal of the Korea Contents Association
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• v.22 no.9
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• pp.520-530
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• 2022

The purpose of this study is to examine the status and perceptions, needs of speech language pathologists(SLPs) for the intervention of non-verbal autism spectrum disorders(ASD) through a survey. Among SLPs registered in the Korean Association of Speech-Language Pathologists (KSLP), 116 SLPs participated in this survey. The result is as follows. First, 96.6% of SLP reported that they had been referred for non-verbal ASD, and it was found that SELSI was the most used evaluation tool, and communication ability and social interaction were the most frequently used intervention goals. Second, 86.2% of the SLP said that speech therapy had difficulties, and the reason for the burden was the lack of speech therapy methods. Also, the level of knowledge of speech therapy for non-verbal ASD was low in the treatment area, and the level of confidence responded positively only in communication ability and social interaction. Third, education that was considered necessary within the curriculum was education on treatment methods, and it was found that the improvement points of education other than regular courses were increased education such as expert courses and workshops and activation of supervision. From the results of this study, it is expected that the related curriculum will be expanded and improved in the future.

• Journal of Industrial Technology
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• v.36
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• pp.77-81
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• 2016

Superparamagnetic $Fe_3O_4$ nanoparticles with particle size from 10 to 20 nm were synthesized by coprecipitation method. Subsequently, the $Fe_3O_4$ nanoparticles were used to fabricate $Fe_3O_4/SiO_2$ core-shell nanoparticles by sol-gel method. The $Fe_3O_4/SiO_2$ nanoparticles synthesized by sol-gel method exhibit the high uniformities of particle size and shape. We also investigated the heating characteristics of $Fe_3O_4$ and $Fe_3O_4/SiO_2$ nanoparticles for biomedical applications. The $Fe_3O_4$ nanoparticles show the faster temperature increase and the higher specific loss power(SLP) value than the $Fe_3O_4/SiO_2$ nanoparticles.

• Proceedings of the Korea Information Processing Society Conference
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• 2006.05a
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• pp.1411-1414
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• 2006

유비쿼터스 컴퓨팅환경에서는 다양한 서비스가 존재한다. 사용자들은 수많은 서비스들을 사용하기에 앞서 이들이 어디에 있는지, 어떻게 사용해야 하는지를 알아야 한다. SLP, Jini, 그리고 UPnP 같은 대부분의 현존하는 서비스 디스커버리 (Service Discovery) 기술들은 키워드 매치 방법으로 서비스를 검색한다. 이 같은 방식에서는 사용자가 자신이 이용하고자 하는 서비스에 대한 정확한 명칭을 알고 있어야 서비스를 검색할 수 있다. 그러나 유비쿼터스 환경에서는 매우 다양한 서비스가 존재하고, 사용자들 대부분은 해당 서비스의 전문가가 아니기 때문에 정확한 키워드를 선택하여, 원하는 서비스를 찾는데 어려움이 있다. 시맨틱 웹 분야에서 새롭게 떠오른 온톨로지는 특정 분야에서 사용되는 정보의 구조 혹은 용어에 관한 내용을 사용자들이 공유할 수 있도록 정리해놓은 것이다. 본 논문에서는 이러한 온톨로지의 특성을 이용하여, 사용자에게 이용 가능한 서비스에 대한 정보들을 제공하여 사용자가 다양한 서비스를 쉽게 찾아 쓸 수 있는 방법을 제안하였다. 이 방식은 에이전트간의 온톨로지 교환을 통해서 이루어지며, 서비스 블록(Service Block)이라고 불리는 공간 안에서 수행된다. 또한 서비스 컨트롤러(Service Controller)를 이용하여 서비스를 쉽게 사용할 수 있도록 UI 를 제공한다. 본 시스템을 위하여 JENA2, JADE, Aglet, OWL, 그리고 RDQL 이 사용되었다.