• Title/Summary/Keyword: class analysis

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The influence of internet-use Anatomy class on critical thinking disposition - Flipped learning method applying-

  • Kim, Jung-ae;Kim, Su-min;Yang, Dong-hwi
    • International Journal of Internet, Broadcasting and Communication
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    • v.10 no.2
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    • pp.60-67
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    • 2018
  • The purpose of this study was to examine the effects of internet-use Anatomy class, as one of the Flipped learning method, on critical thinking disposition. The class for this study was conducted from March 1 to April 10, 2018. The study involved a total of 180 people in the first year of a University located in C province. Data collection was carried out before and after the Flipped learning method application. Frequency analysis, Paired t-test, Pearson correlation, and Regression analysis were used for the analysis. According to the analysis, 28.3% of men and 71.1% of women and before applying the program analysis of correlation between Flipped learning perception and critical thinking disposition showed a significant correlation between confidence(sub-component of critical thinking) only (p<.005). Comparing the scores of critical thinking before and after the program, it was found that Truth seeking (p<.001), Open-mindness (p<.005), Confidence (p<.001), Systematicity (p<.005), Analyticity (p<.001), and Inquisitiveness (p<.001) scores had increased significantly except Maturity (p>.005). And the regression analysis of Flipped learning method applying influence on critical thinking disposition were significantly affected (p<.001). Based on the results of this study, it was possible to determine that Flipped learning method had a positive effect on critical thinking disposition.

Analysis and Design of a DC-Side Symmetrical Class-D ZCS Rectifier for the PFC of Lighting Applications

  • Ekkaravarodome, Chainarin;Thounthong, Phatiphat;Jirasereeamornkul, Kamon;Higuchi, Kohji
    • Journal of Power Electronics
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    • v.15 no.3
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    • pp.621-633
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    • 2015
  • This paper proposes the analysis and design of a DC-side symmetrical zero-current-switching (ZCS) Class-D current-source driven resonant rectifier to improve the low power-factor and high line current harmonic distortion of lighting applications. An analysis of the junction capacitance effect of Class-D ZCS rectifier diodes, which has a significant impact on line current harmonic distortion, is discussed in this paper. The design procedure is based on the principle of the symmetrical Class-D ZCS rectifier, which ensures more accurate results and provides a more systematic and feasible analysis methodology. Improvement in the power quality is achieved by using the output characteristics of the DC-side Class-D ZCS rectifier, which is inserted between the front-end bridge-rectifier and the bulk-filter capacitor. By using this symmetrical topology, the conduction angle of the bridge-rectifier diode current is increased and the low line harmonic distortion and power-factor near unity were naturally achieved. The peak and ripple values of the line current are also reduced, which allows for a reduced filter-inductor volume of the electromagnetic interference (EMI) filter. In addition, low-cost standard-recovery diodes can be employed as a bridge-rectifier. The validity of the theoretical analysis is confirmed by simulation and experimental results.

Perceived Benefits and User Loyalty Analysis Model - College Online Class System (지각된 혜택과 이용자 충성도 분석모형-대학의 온라인 수업 시스템)

  • Jong Weon Kim;Daekil Kim
    • Information Systems Review
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    • v.25 no.4
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    • pp.249-263
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    • 2023
  • The present study investigated the impact of users' perceived benefits on their happiness and loyalty towards the university's online class system. Furthermore, the notion of loyalty was delineated into cognitive, emotional, intentional, and behavioral loyalty, and a systematic analysis was conducted to assess their respective impacts. The analysis was conducted using survey data obtained from a sample of 298 college students who possessed prior experience with the university's online class system. The analysis of the survey revealed that the satisfaction with the online class system was positively influenced by perceived practical benefits and symbolic benefits. However, it was found that emotional benefits did not have a statistically significant impact on satisfaction. Furthermore, it has been demonstrated that cognitive loyalty exerts a substantial beneficial impact on emotional loyalty, as well as a sequential and considerable positive influence on active and behavioral commitment inside the online class system established through perceived benefits. This study holds significance as it conducted an empirical analysis on the impact of users' perceived benefits of the university's online class system on their satisfaction levels, as well as its influence on the four-stage development process of loyalty.

The Effect of 8 Weeks Athletics Class on Sprint Start Motion (8주 동안의 육상 교양수업 참여가 단거리 스타트 동작에 미치는 영향)

  • Lee, Jin-Taek
    • Korean Journal of Applied Biomechanics
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    • v.24 no.3
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    • pp.209-216
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    • 2014
  • The purpose of this study was to explore the effect of 8 weeks after school classes of track sports on students' start motion through kinematic variables. 30 students in D National university of education participated for this study. These students divided into two groups, 17 students for experimental group and 13 students for control group. The two groups participated in general athletic class as common class, and the experimental group participated in after school class additionally. The general class taught track and jump skill for 3 hours a week, and the after school class taught only athletic running skill for 30 minutes a week. Pre and post test assessed to assess students' kinematic changes. Findings indicated that velocity and step rate were increased, and contact time, step length, displacement of center of mass were decreased in the experimental group. In the control group, early velocity, knee/hip angle velocity were increased, and contact time, step length, displacement of center of mass were decreased. In conclusion, the students who only participated in general class, could not maintain athletic skills obtained from the class. However, students who participated in both general and after school class accomplish athletic start skill. This is because Continuous learning effect helped students keep the skill and did not lose the skill. Thus, in order for students to learn specific sport skills, joining after school class with general class together is recommended.

A Case Study on the Application of Flipped Learning Methodology to Thermodynamics in Mechanical Engineering (열역학 교과목에 대한 플립러닝 교수법 적용 사례)

  • Ryu, Kyunghyun
    • Journal of Engineering Education Research
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    • v.25 no.6
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    • pp.69-80
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    • 2022
  • In this study, the application of flipped learning methodology to thermodynamics in mechanical engineering was examined, and how university students view flipped learning and the effects of flipped learning were analyzed. To analyze the effects of flipped learning, pre-class survey, assessment on learning in pre-class, team activities during class, and post-class survey were conducted. The analysis was also conducted on 33 students who took the thermodynamics course in mechanical engineering, and the PARTNER flipped learning model was applied to the class. The results of this study are as follows; In the preliminary survey, the students expected that the flip-learning class with team activities and teaching between team members would be helpful in improving their learning. In addition, students recognized that cooperative learning through a team was helpful for learning. The case reflecting the result of pre-learning evaluation to the subject grades showed higher pre-learning evaluation results than the case not reflecting the result of the pre-learning evaluation to the subject grades, and it was found that the pre-learning evaluation was acting as a factor to promote learning in pre-class. In post-class survey, the satisfaction with the flipped learning class was high, indicating that the effectiveness of the flipped learning class applied to the thermodynamics class was excellent.

A Study on the New Control Scheme of Class-I Inverter for IH-Jar Applications with Clamped Voltage Characteristics Using Pulse frequency Modulation (주파수 변조 기법을 이용한 전압 클램프 특성을 갖는 유도가열용 Class-E 인버터의 새로운 제어에 관한 연구)

  • 이동윤;최영덕;현동석
    • The Transactions of the Korean Institute of Electrical Engineers B
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    • v.52 no.3
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    • pp.133-139
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    • 2003
  • In this paper, a new control scheme of Class-E inverter for Induction Heating (IH) Jar applications with clamped voltage characteristics using Pulse-Frequency-Modulation (PFM) is introduced. To reduce the voltage stress of switch, the proposed PFM control scheme doesn't need any auxiliary circuit in comparison to a family of Active Clamped Class-E (ACCE) inverter. It can decrease voltage stress of switch through modulation of switching frequency. The Class-E inverter using the proposed control scheme has the advantage of not only the same output power when it is compared with a Hybrid-Active Clamped Class-E (Hybrid-ACCE) inverter but also Zero-Voltage-Switching (ZVS), which are characteristics of conventional Class-E and ACCE inverter. The control principles and analysis of proposed method are explained in detail and its validity is verified through simulation and experimental results.

Awareness of class evaluation of dental hygiene students (치위생과 학생들의 강의평가에 관한 인식 조사)

  • Kim, Chang-Suk;Cho, Mi-Suk
    • Journal of Korean society of Dental Hygiene
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    • v.14 no.1
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    • pp.59-65
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    • 2014
  • Objectives : The purpose of the study is to investigate the awareness and influencing factors of class evaluation in dental hygiene students. This study will establish the measures for educational quality improvement and basic data for effective way of education. Methods : A self-reported questionnaire was filled out by 968 dental hygiene students in Busan, Gyeongnam, and Ulsan from August 26 to September 6, 2013. SPSS 19.0 was used for statistical analysis. Results : Senior students felt the necessity of class evaluation improvement. In class evaluation items by grade, evaluation entity was the most significant factor. The students answered that teaching sincerity was the most important factor in class evaluation. Conclusions : The students thought that class evaluation depended on the entity and sincerity of the class contents.

ANALYSIS OF K-CLASS-BASED DEDICATED STORAGE POLICY IN A UNIT LOAD SYSTEM

  • Yang, Moon-Hee;Rhee, Min-Surp
    • Journal of applied mathematics & informatics
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    • v.23 no.1_2
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    • pp.505-516
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    • 2007
  • In this paper, we provide some fundamental properties and basic theoretical results of K-class-based dedicated storage policy in a unit load system assuming the constant-space assumption that the number of storage locations for a class is not the maximum aggregate inventory position for a class but the sum of space requirement for products assigned to the class. The main theorem is that there exists a (K+1) -class-based storage layout whose expexted single command (SC) travel time is not greater than that of a K-class-based storage layout, i.e, $E(SC^*_{K+1}){\leq}E(SC^*_K)\;for\;K=1,{\cdots}$, (n-1).

The Study on the Influence that the Understanding Degree about the Sentence Stated Math. Problems Reach the Extension of the Problem Solving Capacity. - Focusing on the Unit of Equation and Inequality in Middle School - (문장제에 대한 이해정도가 문제해결력 신장에 미치는 영향에 대한 연구 -중학교 방정식과 부등식 단원을 중심으로-)

  • 지재근;오세열
    • Journal of the Korean School Mathematics Society
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    • v.3 no.1
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    • pp.189-200
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    • 2000
  • The purpose of this thesis is that the students understand the sentence stated math problems closely related to the real life and adapted the right solving strategies try to find the solution to a problem. The following research problem were proposed. 1. How repeated thinking lessons develop the understanding of problems and influence the usage of correct problem solving strategies and extensions of problem solving. 2. There are how much differences of achievement for each type of sentence stated problems by using comparative analysis of upper class, intermediate class, and lower class for each level between the experimental and comparative classes. In order to conduct this research the classes were divided into three different level - upper class, intermediate class and lower class. Each level include an experimental class and a comparative class. The two classes (experimental class and comparative class) of the same level were tested on the basis of class division record with the experimental class repeated learning papers for two weeks were used to guide the fixed thinking algorism for each sentence stated math problems. Eight common problems were chosen from a variety of textbooks : number calculation problems, velocity-distance-time problems, the density of a mixture, benefit problems, distribution problems, problems about working, ratio problems, the length of a figure problems. After conducting this research experiment The differences in achievement level between the experimental class and comparative class, were compared and analyzed through achievement tests made from the achievement test papers with seven problems, which were worth seventy points (total score). The conclusions of this thesis are as follows: Firstly, leaning activities through the usage of repeated learning papers for each level class produce an even development of achievement level especially in the case of the upper class learners, they have particular differences (between experimental class and comparative class) compared to the intermediate level and lower classes. Secondly, according to the analysis about achievement development each problems, learners easily accept the strategies of solution through the formula setting up to the problem of velocity -distance-time, and to the density of the mixture they adapted the picture drawing strategies interestingly, However each situation requires a variety of appropriate solution strategies. Teachers will have to employ other interesting solution strategies which relate to real life.

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Determination of Nursing Costs for Hospitalized Patients Based on the Patient Classification System (종합병원에 입원한 환자의 간호원가 산정에 관한 연구)

  • 박정호;송미숙
    • Journal of Korean Academy of Nursing
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    • v.20 no.1
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    • pp.16-37
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    • 1990
  • A cost analysis for hospitalized patients was carried out based upon Patient Classification System(PCS) in order to determine an appropriate nursing fee. The data were collected from 21 nursing units of three teaching hospitals from April 1 to June 30, 1989. first, all of the 22,056 inpatients were classified into mildly ill(Class Ⅰ), moderately ill(Class Ⅱ), acutely ill(Class Ⅲ), and critically ill(Class Ⅳ) by the PCS which had been carefully developed to be suitable for the Korean nursing units. Second. PCS cost accounting was applied to the above data. The distribution of inpatients, nursing costs, and nursing productivity were as follows : 1) Patient distribution ranged from 45% to class Ⅰ, 36% to class Ⅱ, 15% to class Ⅲ, and 4% to class Ⅳ, the proportion of class Ⅳ in ‘H’ Hospital was greater than that of the other two hospitals. 2) The proportion of Class Ⅲ and Ⅳ in the medical nursing units was greater than that of surgical nursing units. 3) The number of inpatients was greatest on Tuesdays, and least on Sundays. 4) The average nursing cost per hour was W 3,164 for ‘S’ hospital, W 3,511 for ‘H’ hospital and W 4,824 for ‘K’ hospital. The average nursing cost per patient per day was W 14,126 for ‘S’ Hospital, W 15,842 for ‘H’ hospital and W 21,525 for ‘K’ hospital. 5) The average nursing cost calculated by the PCS was W 13,232 for class Ⅰ, W 18,478 for class Ⅱ, W 23,000 for class Ⅲ, and W 25,469 for class Ⅳ. 6) The average nursing cost for the medical and surgical nursing units was W 13,180 and W 13,303 respetively for class Ⅰ, W 18,248 and W 18,707 for class Ⅱ, W 22,303 and W 23,696 for class Ⅲ, and W 24,331 and W 26,606 for class Ⅳ. 7) The nursing costs were composed of 85% for wages and fringe benefits, 3% for material supplies and 12% for overhead. The proportion of wages and fringe benefits among the three Hospitals ranged from 75%, 92% and 98% for the ‘S’, ‘H’, ‘K’ hospitals respectively These findings explain why the average nursing cost of ‘K’ hospital was higher than the others. 8) According to a multi- regression analysis, wages and fringe benefits, material supplies, and overhead had an equal influence on determining the nursing cost while the nursing hours had less influence. 9) The productivity of the medical nursing units were higher than the surgical nursing units, productivity of the D(TS) - nursing units was the lowest while the K(Med) - nursing unit was the highest in 'S' hospital. In ‘H’ hospital, productivity was related to the number of inpatients rather than to the characteristics of the nursing units. The ‘K’ hospital showed the same trend as ‘S’ hospital, that the productivity of the medical nursing unit was higher than the surgical nursing unit. The productivity of ‘S’ hospital was evaluated the highest followed by ‘H’ hospital and ‘K’ hospital. Future research on nursing costs should be extended to the other special nursing areas such as pediatric and psychiatric nursing units, and to ICU or operating rooms. Further, the PCS tool should be carefully evaluated for its appropriateness to all levels of institutions(primary, secondary, tertiary). This study took account only of the quantity of nursing services when developing the PCS tool for evaluating the productivity of nursing units. Future research should also consider the quality of nursing services including the appropriateness of nursing activities.

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