• Title/Summary/Keyword: laboratory aim

Search Result 1,204, Processing Time 0.028 seconds

An Analysis on the Factors that Causes the Difference between Teachers and Students on the Perception of the Laboratory Class Aims in Elementary School (초등학교 과학 수업에서 교사와 학생 간에 과학 실험 목적 인식의 차이가 발생하는 원인 분석)

  • Lim, Jae-Keun;Lee, So-Ri;Kim, Ju-Young;Yang, Il-Ho
    • Journal of Science Education
    • /
    • v.34 no.2
    • /
    • pp.359-368
    • /
    • 2010
  • The purpose of this study was to find out the factor that causes the difference on understanding the aim and perception of laboratory activities between teachers and students. For this study, in-depth interview was conducted for sixth grade students and teachers of 10 classes. The questionnaire of the interview can be divided into 3 sections: the aim of laboratory activities, whether teachers present the aim of laboratory activities, the method of laboratory class progress and the evaluation method. The factors that bring about the difference between the teachers and the students on perception of the aim are the absence of proper guidance on the aim of laboratory activities, the laboratory classes that the progress out of teachers' intention and evaluation method that is the performed without any relationship with the aim of the laboratory activities. Because the teacher-intended aim of laboratory activities is not properly presented, students can't percept the accurate aim. Even though teachers recognize the importance of the improvement of science process skill acquired through laboratory activities, this is not delivered practically in the class and students also can't percept the importance of science process skill.

  • PDF

Prospects for Plant Biotechnology and Bioindustry in the 21st Century: Paradigm Shift Driven by Genomics (21세기 식물생명공학과 생물산업의 전망: 유전체 연구에 의한 Paradigm Shift)

  • Liu, Jang-Ryol;Choi, Dong-Woog;Chung, Hwa-Jee
    • Proceedings of the Korean Society of Plant Biotechnology Conference
    • /
    • 2002.04b
    • /
    • pp.19-25
    • /
    • 2002
  • Biotechnology in the 21st century will be driven by three emerging technologies: genomics, high-throughput biology, and bioinformatics. These technologies are complementary to one another. A large number of economically important crops are currently subjected to whole genome sequencing. Functional genomics for determining the functions of the genes comprising the given plant genome is under progress by using various means including phenotyping data from transgenic mutants, gene expression profiling data from DNA microarrays, and metabolic profiling data from LC/mass analysis. The aim of plant molecular breeding is shifting from introducing agronomic traits such as herbicide and insect resistance to introducing quality traits such as healthful oils and proteins, which will lead to improved and nutritional food and feed products. Plant molecular breeding is also expected to aim to develop crops for producing human therapeutic and industrial proteins.

  • PDF

Evaluation of Resolution Improvement Ability of a DSP Technique for Filter-Array-Based Spectrometers

  • Oliver, J.;Lee, Woong-Bi;Park, Sang-Jun;Lee, Heung-No
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.38C no.6
    • /
    • pp.497-502
    • /
    • 2013
  • In this paper, we aim to evaluate the performance of the digital signal processing (DSP) algorithm used in [8] in order to improve the resolution of spectrometers with fixed number of low-cost, non-ideal filters. In such spectrometers, the resolution is limited by the number of filters. We aim to demonstrate via new experiments that the resolution improvement by six times over the conventional limit is possible by using the DSP algorithm as claimed by [8].

Prospects for Plant Biotechnology and Bioindustry in the 21st Century: Paradigm Shift Driven by Genomics (21세기 식물생명공학과 생물산업의 전망 : 유전체 연구에 의한 Paradigm Shift)

  • LIU Jang Ryol;CHOI Dong-Woog;CHUNG Hwa-Jee
    • Proceedings of the Korean Society of Plant Biotechnology Conference
    • /
    • 2002.04a
    • /
    • pp.19-25
    • /
    • 2002
  • Biotechnology in the 21st century will be driven by three emerging technologies: genomics, high-throughput biology, and bioinformatics. These technologies are complementary to one another. A large number of economically important crops are currently subjected to whole genome sequencing. Functional genomics for determining the functions of the genes comprising the given plant genome is under progress by using various means including phenotyping data from transgenic mutants, gene expression profiling data from DNA microarrays, and metabolic profiling data from LC/mass analysis. The aim of plant molecular breeding is shifting from introducing agronomic traits such as herbicide and insect resistance to introducing quality traits such as healthful oils and proteins, which will lead to improved and nutritional food and feed products. Plant molecular breeding is also expected to aim to develop crops for producing human therapeutic and industrial proteins.

  • PDF

Prospects for Plant Biotechnology and Bioindustry in the 21s1 Century: Paradigm Shift Driven by Genomics (21세기 식물생명공학과 생물산업의 전망 : 유전체 연구에 의한 Paradigm Shift)

  • Liu, Jang-Ryol;Choi, Dong-Woog;Chung, Hwa-Jee
    • Journal of Plant Biotechnology
    • /
    • v.29 no.3
    • /
    • pp.145-150
    • /
    • 2002
  • Biotechnology in the 21st century will be driven by three emerging technologies: genomics, high-throughput biology, and bioinformatics. These technologies are complementary to one another. A large number of economically important crops are currently subjected to whole genome sequencing. Functional genomics for determining the functions of the genes comprising the given plant genome is under progress by using various means including phenotyping data from transgenic mutants, gene expression profiling data from DNA microarrays, and metabolic profiling data from LC/mass analysis. The aim of plant molecular breeding is shifting from introducing agronomic traits such as herbicide and insect resistance to introducing quality traits such as healthful oils and proteins, which will lead to improved and nutritional food and feed products. Plant molecular breeding is also expected to aim to develop crops for producing human therapeutic and industrial proteins.

Probabilistic multi-objective optimization of a corrugated-core sandwich structure

  • Khalkhali, Abolfazl;Sarmadi, Morteza;Khakshournia, Sharif;Jafari, Nariman
    • Geomechanics and Engineering
    • /
    • v.10 no.6
    • /
    • pp.709-726
    • /
    • 2016
  • Corrugated-core sandwich panels are prevalent for many applications in industries. The researches performed with the aim of optimization of such structures in the literature have considered a deterministic approach. However, it is believed that deterministic optimum points may lead to high-risk designs instead of optimum ones. In this paper, an effort has been made to provide a reliable and robust design of corrugated-core sandwich structures through stochastic and probabilistic multi-objective optimization approach. The optimization is performed using a coupling between genetic algorithm (GA), Monte Carlo simulation (MCS) and finite element method (FEM). To this aim, Prob. Design module in ANSYS is employed and using a coupling between optimization codes in MATLAB and ANSYS, a connection has been made between numerical results and optimization process. Results in both cases of deterministic and probabilistic multi-objective optimizations are illustrated and compared together to gain a better understanding of the best sandwich panel design by taking into account reliability and robustness. Comparison of results with a similar deterministic optimization study demonstrated better reliability and robustness of optimum point of this study.

A Survey of Science Teachers, Perception and Attitudes on Disposal of School Laboratory Waste Water and Materials (환경 오염 및 과학 실험실 폐수와 폐기물 처리에 대한 과학 교사들의 인식과 태도 조사)

  • Kim, Ik-Hee;Park, Kuk-Tae;Jeong, Jin-Su
    • Hwankyungkyoyuk
    • /
    • v.20 no.4
    • /
    • pp.65-83
    • /
    • 2007
  • The purpose of this study was to survey science teachers, perception and attitudes on disposal of school laboratory waste water and materials. To fulfill this aim, a questionnaire was administered to 244 secondary school science teachers. The result of this study revealed that there was no large disparity in the degree of understanding of laboratory waste disposal and the laboratory waste water treatment, and in secondary science teachers' perception and practicing attitude on the environment. While science teachers had deep understanding of laboratory waste disposal and its influence on environmental pollution, they expressed less positive attitude toward the actual disposal of waste materials and waste water, and participation in teacher training. Therefore, it is necessary to provide standards of systematized disposal methods and proper disposal facilities in middle and high school laboratories, as well as to investigate teachers' needs before providing teacher training program.

  • PDF

Factors Affecting the Job Performance of Clinical Laboratory Scientists

  • Shim, Moon-Jung
    • Korean Journal of Clinical Laboratory Science
    • /
    • v.41 no.3
    • /
    • pp.140-144
    • /
    • 2009
  • Clinical laboratory testing plays a crucial role in the detection, diagnosis, and treatment of disease. Clinical laboratory scientists evaluate test results, develop and modify procedures, and establish and monitor programs, to ensure the accuracy of tests. It is clear that over the past decade the role of the clinical laboratory scientists has expanded and this process will be continued into the future. The purpose of this study is to clarify the factors influencing the job performance of clinical laboratory scientists and aim to provide the role and duties of clinical laboratory scientists. To examine the frequency of work context and the importance of task, the surveys were conducted on 168 clinical laboratory scientists. The questionnaire items were used 10 score by Likert scale. According to the results of this study, the important factor affecting the job performance was "Analyze laboratory findings to check the accuracy of the results", and the next factors were "Establish and monitor quality assurance programs", "Enter data from analyzer into computer", "Calibrate and maintain equipment". And the factors of "repeating same tasks" and "spend time making repetitive motions" were answered the highest. This study will provide strategies for improving work environment, developing education curriculum and method, and role of clinical laboratory scientists. We must continually upgrade our knowledge, and identify the new trends in technology and science and accept changes.

  • PDF

Guidline for the Maximum Surgical Blood Order Schedule (MSBOS) for Surgical Operations (수술용 최대혈액신청량(MSBOS)의 설정)

  • Shin, Kyung A;Choi, Jong Tai;Kim, Hyun Soo
    • Korean Journal of Clinical Laboratory Science
    • /
    • v.36 no.2
    • /
    • pp.153-157
    • /
    • 2004
  • The aim of our study is to determine maximum surgical blood order schedule (MSBOS) in each surgical operation through analyzing usage of blood products at Bundang Jesaeng General Hospital. We investigated the amount of transfused red cells for each operation and calculated crossmatching-to-transfusion ratio (C/T ratio) and MSBOS. This was accomplished by referring to the Laboratory Information System program during 1 year from January through December 2003. Coronary artery bypass surgery and decompressive craniectomy showed the highest MSBOS in our hospital. The average C/T ratio was 3.2 and excessive reservations for blood products have been made for many operations. From this study, guidelines for the optimal blood ordering for each surgery were suggested.

  • PDF