• 대한화학회지
• /
• 제62권2호
• /
• pp.159-165
• /
• 2018

For the first time, the spot the differences (STD) game was employed in the teaching of basic organic chemistry course. Three sets of paired pictures associated with selected topics in organic chemistry were presented to the students and they were required to spot the differences between the two pictures. Based on the students' pre and post self-assessment, the STD game resulted in several positive learning outcomes as indicated in the students' reflective writing, including knowledge recall, deeper understanding of a subject, enhanced analytical skill, motivation and fun-filled learning, learning from peers and self-empowerment in learning. The STD game is a desirable teaching and learning tool, as learning in an entertaining and interactive way is highly sought after in today's classroom, especially to novice students. In the future, the STD game can be modified and implemented to cater the needs of different courses and topics.

• Journal of Information Processing Systems
• /
• 제15권3호
• /
• pp.500-519
• /
• 2019

The blooming of social media has simulated interest in sentiment analysis. Sentiment analysis aims to determine from a specific piece of content the overall attitude of its author in relation to a specific item, product, brand, or service. In sentiment analysis, the focus is on the subjective sentences. Hence, in order to discover and extract the subjective information from a given text, researchers have applied various methods in computational linguistics, natural language processing, and text analysis. The aim of this paper is to provide an in-depth up-to-date study of the sentiment analysis algorithms in order to familiarize with other works done in the subject. The paper focuses on the main tasks and applications of sentiment analysis. State-of-the-art algorithms, methodologies and techniques have been categorized and summarized to facilitate future research in this field.

• 한국작물학회지
• /
• 제35권6호
• /
• pp.548-558
• /
• 1990

Physiology and genetics of early maturity in cereals are the subject of practical as well as scientific interest for agronomist and plant breeders, Thorough understanding of the true nature of such a complex character requires physiological and genetical knowledge about the internal factors, which are closely bound up with and react to some particular external or environmental factors. From the practical point of view. experiments should be conducted under controlled conditions. especially the day length and temperature, so that the genotypic differences pertaining to these factors may be discerned. Takahashi and Yasuda (1958, 1970) maintained that at least three physiological factors were responsible for determining earliness in barley. namely. (1) spring and winter habit of growth or vernalization requirement, (2) ogitioeruiduc response or sensitivity to short-day, and (3) earliness factor in a narrow sense or minimal vegetative growth. The same situations were true in common wheat also (Yasuda and Shimoyama, 1965), In this report. physiology and genetics of internal factors and their relations to the time of heading in the field will be presented with some problems concerning differences in mechanism of early maturity between barley and wheat.

• Journal of applied mathematics & informatics
• /
• 제7권1호
• /
• pp.237-245
• /
• 2000

In this paper, we consider to the adjustment weighting procedure in the two phase sampling scheme. In general, the unit nonresponses may be occured in the final survey operation. When the unit nonresponse be generated in survey, it is able to use the auxiliary variable for estimating of interest variable. In this viewpoint, we use the two kinds level of auxiliary variable, $X_{1k}$ and $X_{2k}$ for the calibration procedure. We proprose the two-step Newton's method in the calibration estimation procedure for the two phase sampling.

• International Journal of Computer Science & Network Security
• /
• 제24권1호
• /
• pp.45-51
• /
• 2024

The subject of navigation has drawn a large interest in the last few years. The navigation within a city is to find the path between two points, source location and destination location. In many cities, solving the routing problem is very essential as to find the route between different locations (starting location (source) and an ending location (destination)) in a fast and efficient way. This paper considers streets with diagonal streets. Such streets pose a problem in determining the directions of the route to be followed. The paper presents a solution for the path planning using the reconfigurable mesh (R-Mesh). R-Mesh is a parallel platform that has very fast solutions to many problems and can be deployed in moving vehicles and moving robots. This paper presents a solution that is very fast in computing the routes.

• 한국정보통신학회:학술대회논문집
• /
• 한국정보통신학회 2014년도 추계학술대회
• /
• pp.233-236
• /
• 2014

본 연구의 목적은 가드너의 다중지능이론을 활용한 개별화수업이 다양한 성향과 개인차를 갖고 있는 대안학교 학생들의 컴퓨터교과의 학업성취도향상과 학습흥미도향상에 미치는 영향을 알아보는 것이다. 본 연구의 목적을 달성하기 위해서 다중지능이론을 적용한 컴퓨터교과 수업프로그램을 화성시에 소재하고 있는 특성화 대안학교 2학년 2개 학급을 연구대상으로 진행하였다. 다중지능이론에 기초한 기존 연구결과를 토대로 수업에 적용 가능한 교수학습 활동 전략을 실시한 1개 학급 20명과 기존의 전통식 교육방식으로 수업을 실시한 1개 학급 19명의 학생을 대상으로 주 2시간씩 10차시 수업을 진행하였다. 자료 분석은 실험집단과 비교집단의 사전 사후 검사의 차이를 독립 t-test를 이용하여 분석하였다. 이에 대한 자료통계 분석결과 다음과 같은 결론을 얻을 수 있었다. 첫째, 다중지능이론을 활용해서 수업을 실시한 실험집단이 전통적 강의식 수업을 실시한 비교 집단에 비해서 학업성취도가 더 높은 것으로 나왔다. 둘째, 다중지능이론을 활용해서 수업을 실시한 실험집단이 전통적 강의식 수업을 실시한 비교집단에 비해서 학습흥미가 더 높은 것으로 나왔다. 셋째, 사회성발달은 실험집단과 비교집단 둘 다 별 차이를 보이지 않았다.

• 한국치위생학회지
• /
• 제21권5호
• /
• pp.639-644
• /
• 2021

Objectives: The purpose of this study was to analyze the factors that affected the number of citations for articles published in the Journal of Korean Society of Dental Hygiene based on previous studies. Methods: Information on papers including the number of citations was collected using a web crawling technique. The effect of the number of author keywords, the number of Medical Subject Headings (MeSH) keywords, MeSH match rate, abstract word count and keyword-abstract ratio on the number of citations was analyzed by multiple regression analysis. Results: The use of the MeSH keyword did not have a significant effect on the number of citations. Among the other factors, only the keyword-abstract ratio was statistically significant. Conclusions: Select a topic of constant interest in the field, write the title in detail using colons or asterisks if necessary, and do not repeat the words used in the title in keywords. Select specific keywords deeply related to the topic. In particular, choice words or phrases that are frequently used in the abstract. If the MeSH keyword selection contradicts the previous strategies, boldly give up the MeSH keyword.

• 한국초등과학교육학회지:초등과학교육
• /
• 제28권4호
• /
• pp.390-403
• /
• 2009

We have examined the perception of teachers and students in elementary schools toward the frontier science and analyzed corresponding contents in science textbooks in Korea and the U. S. in order to promote a good guidance for the frontier science education. We prepared separate questionnaires for teachers and children, respectively, and analyzed the responses obtained from 244 teachers and 1,000 students in five elementary schools. For the analysis of how to introduce the frontier science, we investigated textbooks such as Science, Society and Practical Arts of Korean elementary school, and an American science textbook published by Scott Foresman. This study revealed that teachers are well aware of the importance of the frontier science, however, they are inactive in conducting the subject in class rooms because of their insufficient scientific knowledge and poor environment for teaching. It has been found that children had strong interest in the frontier science, however, opportunities to learn the topic are not properly provided. The frontier science m the American science textbook turned out to be more systematically introduced than that in Korean ones.

• 한국초등과학교육학회지:초등과학교육
• /
• 제24권1호
• /
• pp.21-29
• /
• 2005

This study is purposed to research the present status and outcomes of adaption of science teacher system in elementary school. The subjects of this study are science teachers, schoolmasters, science supervisors, and 3rd$\~$6th grade students in western office of board of education, Gwangju Metropolitan city. It was found that there are 264 teachers who teach one subject and only two of them were science teachers. In elementary schools, most classroom teachers didn't want to be science teachers and schoolmasters or science supervisors could not afford to adapt science teacher system. After applying science teacher system to 3$\~$6th grade students during one school year, many students were improved in academic achievement and inquiring ability, and they have increased of interest and participation in science activities. This means that science class by science teacher is more effective than that by classroom teacher. Therefore, science teacher system should enlarge to science class in elementary school.

• 대한산업공학회지
• /
• 제14권1호
• /
• pp.91-101
• /
• 1988

Break-even analysis is a simple and useful tool in decisions and planning activities though its use is somewhat limited to short-term analysis. The subject is discussed in the fields of engineering economics, production management, cost and managerial accounting, finance, marketing, and so on. Conventional break-even analysis suits the case of stable price and low interest rate. In this paper, we try to overcome the limit by considering following factors, namely, time value of money, depreciation, tax, and capital gains. Also, considering learning effect, we increase applicability to a new project which raises certain changes such as a replacement of production process, an employee turnover, etc. Thus, we suggest a model which has a dynamic break-even quantity per period for the project. Furthermore, we examine the effect of inflation in break-even analysis.