• Title/Summary/Keyword: Class123

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The Educatees' Perception Change of Learning Motivation and Fairness on Feedback using App (앱기반 피드백에 대한 피교육자의 학습동기 및 공정성 인식 변화)

  • Kim, Sangkyun
    • Journal of Korea Game Society
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    • 제15권3호
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    • pp.79-86
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    • 2015
  • Effective feedback plays a key role in education environments to motivate the students and to maintain their flow. However, there usually lacks in providing effective feedbacks in education environments due to an excessive number of students and insufficient class times. The purpose of this paper is to analyze the educatees' response on game like feedback using App. In this paper, Class123 App developed and published by BravePops was used. During one semester, Class123 App had been used in engineering class and the educatees' responses on game like feedbacks using Class123 App are analyzed. Statistical analysis results show that the feedbacks using Class123 App made positive effects to motivate the students. Especially, the positive feedbacks were more effective than the negative feedbacks.

Fuzzy SVM for Multi-Class Classification

  • Na, Eun-Young;Hong, Dug-Hun;Hwang, Chang-Ha
    • 한국데이터정보과학회:학술대회논문집
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    • 한국데이터정보과학회 2003년도 추계학술대회
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    • pp.123-123
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    • 2003
  • More elaborated methods allowing the usage of binary classifiers for the resolution of multi-class classification problems are briefly presented. This way of using FSVC to learn a K-class classification problem consists in choosing the maximum applied to the outputs of K FSVC solving a one-per-class decomposition of the general problem.

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ON A CLASS OF ANALYTIC FUNCTIONS INVOLVING RUSCHEWEYH DERIVATIVES

  • Yang, Dinggong;Liu, Jinlin
    • Bulletin of the Korean Mathematical Society
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    • 제39권1호
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    • pp.123-131
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    • 2002
  • Let A(p, k) (p, k$\in$N) be the class of functions f(z) = $z^{p}$ + $a_{p+k}$ $z^{p+k}$+… analytic in the unit disk. We introduce a subclass H(p, k, λ, $\delta$, A, B) of A(p, k) by using the Ruscheweyh derivative. The object of the present paper is to show some properties of functions in the class H(p, k, λ, $\delta$, A, B). B).

Performance Improvement of Multilayer Perceptrons with Increased Output Nodes (다층퍼셉트론의 출력 노드 수 증가에 의한 성능 향상)

  • Oh, Sang-Hoon
    • The Journal of the Korea Contents Association
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    • 제9권1호
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    • pp.123-130
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    • 2009
  • When we apply MLPs(multilayer perceptrons) to pattern classification problems, we generally allocate one output node for each class and the index of output node denotes a class. On the contrary, in this paper, we propose to increase the number of output nodes per each class for performance improvement of MLPs. For theoretical backgrounds, we derive the misclassification probability in two class problems with additional outputs under the assumption that the two classes have equal probability and outputs are uniformly distributed in each class. Also, simulations of 50 isolated-word recognition show the effectiveness of our method.

Forecasting Demand of Childcare Teachers using Time Series Analysis (시계열 분석을 통한 보육교사 수급 전망)

  • Lee, Mee Hwa;Park, Jinah;Kang, Eun Jin
    • Korean Journal of Childcare and Education
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    • 제12권6호
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    • pp.123-137
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    • 2016
  • The purpose of this study was to forecast demand of childcare teachers based ion four different scenarios. In order to, the demand for childcare teachers from 2015 to 2024 were forecasted using time series techniques with data on the number of childcare teachers from 2003 to 2014. Results were as followings. Firstly, the demand for childcare teachers was expected to increase until 2019, but after 2020 steadily decreased in terms of scenario 1(child teacher ratio regulation). According to scenario 2(child teacher ratio based on 17 cities and provinces), the demand for childcare teachers was expected to need 440 teachers more until 2016. Then, according to scenario 3(two teachers each class), Scenario 4-1(one teacher and one staff each 2 toddler class and 3 older class) and scenario 4-2(one teacher and one staff each class), the demand of childcare teachers and staffs were estimated. These results implicated that childcare teachers and staffs supply policy would be established according to forecast demand.

A Study on Clean Agents for Halon Replacement in the Portable Extinguisher with CO2 as an Expellant Gas (이산화탄소를 가압원으로 하는 할론대체 소화기용 청정소화약제에 대한 연구)

  • Jeong, Keesin
    • Fire Science and Engineering
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    • 제33권3호
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    • pp.51-55
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    • 2019
  • To prevent ozone depletion caused by CFCs, the replacement of Halon with clean agents has been developed in the fire protection field along with refrigerants, detergents, and foaming agents. The alternatives for Halon 1211 have been developed in the portable fire extinguisher area and HCFC-123 is used widely as a clean fire extinguishing agent. The type of expellant gas is important because their own vapor pressure is low. In this study, HCFC-123, HCFC-124, HFC-125, and Novec-1230 were selected as fire extinguishing agents and CO2, which is expected to improve the fire extinguishing ability, was chosen as the expellant gas. For each agent, experiments changing the agent and CO2 amount were carried out and HCFC-123 showed a good result, as expected. The extinguisher, HCFC-123 of 1.5 kg, showed the same ability to suppress a class A and B fire as the extinguisher, HCFC-123 of 2.5 kg, which is currently sold on the market. According to this result, the expellant gas has a subsidiary fire extinguish effect. This can reduce the amount of HCFC fire extinguishing agent, which is categorized in the phase-out alternatives, and is a more eco-friendly and economical fire extinguisher than the previous one. This study can also help solve the problems of CO2 fire extinguishers for class B and C fires, and can be used to extinguish electric and electron facilities fire, which contains large amounts of class A fire combustibles.

On a Class of Analytic Functions Related to the Starlike Functions

  • Gao, Chunyi;Zhou, Shiqiong
    • Kyungpook Mathematical Journal
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    • 제45권1호
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    • pp.123-130
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    • 2005
  • In this paper we discuss a class of analytic functions related to the starlike functions in the unit disk. We prove that this class belongs to the class of close-to-convex functions, we obtain the sharp coefficient upper bounds and distortion theorem of this class, we also get the convexity radius of this class.

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Analysis of Elementary Students' Interlanguage in Science Class about Heat and Temperature (열과 온도 수업에서 나타난 초등학생들의 중간 언어 분석)

  • Lee, Ilyeon;Jang, Shinho
    • Journal of Korean Elementary Science Education
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    • 제34권1호
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    • pp.123-130
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    • 2015
  • For effective science learning, teachers need to rearrange scientific language so that students can understand the contents with their incomplete language resources. Interlanguage is the interplay between everyday language and scientific language. The purpose of the study was to analyze the patterns of interlanguage during 4th grade science class to learn "Heat and Temperature" and to find the features of meaning sharing inside classroom in which a teacher and students participated. The data analysis shows that elementary students' interlanguage has different features compared to scientific language that involves passive voice and content-specialized nouns. Students' interlanguage implied the quality of class community's knowledge-sharing, according to the degree of how students can connect scientific language and everyday language in more effective ways. The implication to elementary science education was discussed.