현대 과학교육철학의 변화와 BSCS 도입시의 문제점

권병규 慶北大學校 師範大學 1970 敎育硏究誌 Vol.11 No.-

The development of so-called "new curricula" in science began with a basic change in the philosopy of science teaching and posses the urgent need of research as to their adequacy, their relations to other facets of school science programs in Korea. A new emphasis found on the identification of basic concepts, the processes of science, and the teaching of inquiry. All of these terms suggest the students' need for a more lasting framework to use in interpreting present information and forming rational judgment about discoverier in the future. The Biology Education Study Committee (BESC) has been studying the three: versions of the BSCS textbooks and selected the Green Version for adaptation in Korea. Although there are many problems in the design of this adaptation projects. These are: 1) Some bureacracy was involved in deciding the curriculum, 2) Lack of equipment and facilities for experiment, 3) Size of class (60-70 students pr class) 4) The qualities of teachers and the excessive demands placed upon teachers. 5) Preparation for entrance1 examination for advanced study as a big factor which hinders the adaptation of a new approach. 6) Financial suport.

學生의 科學意識 및 態度調査

權炳奎 경북대학교 과학교육연구소 1982 科學敎育硏究誌 Vol.6 No.-

Our society is in the midst of a period of major transformation. Environmental pollution, energy crisis, food shortage, overpopulation, disease, the running out of natural resources and accidents are all indicators that yesterday's successes are today's problems. This article focuses on student cognitives and attitudes toward social problems, the amelioration of these problems and their perceptions of science and technology in our society. A questionnaire that included 24 statements and responses were obtained from 860 secondary school students. The student responses are reported as percentages of young people who responded positively or negatively to a given questions or set of question. Personal attitudes on the social problems, the nature of science and an organ transplantation showed several inconsistencies. Such contradictions may indicate that the students have had little or no opportunity to learn about it. Our curricula have clearly omitted most of the problems which are now, and will be in future, essential to our survival, welfare, and continued development. In the crucial period of transformation we can no longer avoid value in science teaching, thus neglecting the human qualities of choice, decision, and responsibility.

高等學校 生物敎科書의 實驗內容의 比較 檢討

權炳奎,鄭華淑 慶北大學校 師範大學 1980 敎育硏究誌 Vol.22 No.-

This paper is a comparative investigation in the experimental contents which are dealt with in the five kinds of high school biology textbooks. The contents of experiments described in each textbook are very varied in respect of quantity and quality, for example, units without expariment, units with too many experiments, quite divergent experimental contents in different texts and strikingly only one out of 58 experimental items in common in all kinds of textbooks. Unit that was dealt without experiment, and that contained too many experimennts, in addition the contents of experiments differ ineach kind of textbook, and only one out of 58 experimental items is common in different kinds of textbooks. The use of a particular textbook by each school for biological instruction makes it difficult for learning basic principal concepts and methods. Although the specified topics of experiments are described in each kind of textbook, the contents of experiments must be aimed at developing inquiring ability and attitude toward new problems by acquiring the basic knowledge, concepts and scientific methods through the inquiry process. Even though the contents of experiments is same, the development of inquiring process and scientific process is greatly influenced by the systematic approach of instruction. The current textbooks were not prepared in accordance with the above mentioned systematic approach of instruction. Finally, teachers in charge of biological instruction must prepare experimental systematic approach of instruction in order to enhance experimental effectiveness. And the authors of textbooks would be responsible for the careful selection of the essential experimental items for acquiring the principal concepts and scientific methods in high school biology.

사과 열과(裂果)의 원인과 그 방지에 관한 연구

권병규,강영호,이우승,성민웅,한강원 경북대학교 1971 生産技術 Vol.5 No.-

On the basis of our hypothesis about the causes of cracking has obtained in our 1969's study, we investigated the relations among the cracking and the microelements, the environmental factors, and the treatment of IAA and GA in two selected orchards. We analyzed and compared with the contents of microelements (Mn, B, zn, and Cu) in leaves and soils of two test orchards (Taegu and Yungju). The results of the study which the causes of cracking of apples are examined through the above three procedures, are as follows: 1. The contents of Mn in soil of Taegu test orchard were total Mn 435.9 ppm, soil sol'n Mn 6.2ppm, and total Mn 284.6 pm in leaves. That of Yungju test orchard were total Mn 595.1ppm, soil sol'n Mn 6.2ppm and total Mn 144.2ppm in leaves. Comparing with Mn optimum contents in leaves Mn contents of Taegu test orchard were higher than the optimum concentration, while those of Yungju were approximately satis-factory. 2. The contents of B in leaves were 3.7ppm in Taegu and 4.6ppm in Yungju. These contents were lower ten times than the optimum contents and were the same deficiency in both test orchards. 3. The contents of Zn in leaves were 5.7ppm in Taegu and 3.8ppm in Yungju. Those contents were both the same deficiency as comparing with the optimum contents. 4. The contents of Cu in leaves were 29.3ppm in Taegu test orchard and 10.6ppm in Yungju test orchard. Comparing with the optimum contents, the contents of Cu were excess in Taegu test orchard, while that of Cu were approximately satisfactory in Yungju 5. The diameter of Ralls apple fruits were increased 1.1% in IAA spraying treatment and 3.1% in GA spraying treatment as comparing with control group 6. The thickness of cuticle layer of Ralls apple fruits were highest and the cuticle treated with IAA and GA was thinner than the control group. 7. New branches of tree with higher cracking rate tended to decrease in length, in figure and size of leaves. 8. The change of diameter in fruits were decreased in higher cracking fruits during day and night. The change of that in IAA and GA group were increased 6.1% and 1.2% respectively compared with the control group. 9. The application of IAA and GA solution slowed the cracking rate by 2.2 and 0.8% respectively compared with the control group 10. In 1970 year the cracking rate of Ralls apple fruit were 6.53% in Taegu and 4.31% in Yungju test orchard. 11. We obtained linear regression of rate of cracking and the summation of temperature during May to August in Taegu area. The summation of temperature was 2428.1℃ during June to August in 1970. When the summation of temperature was increased more than above that of tempera ture, we could expect that it was possible to increase the rate of cracking Ralls apple. An equation in the summation of temperature and the rate of cracking fruits during May to August were obtained y=0.074x-157.50. 12. The investigation indicates that a method of preventing the cracking of Ralls apple is: a. to spray at the optimum time growth hormone which increases the elasticity and elongation of cell wall. b. to alter the composition of soil by putting the organic fertilizer deeply in the ground. c. to replace Ralls apples with new varieties which is strong against cracking and have high quality and economical productivity.

슬랩 할당 전략을 적용한 개선된 메모리풀

권병규,신병석 한국차세대컴퓨팅학회 2010 한국차세대컴퓨팅학회 논문지 Vol.6 No.4

본 연구는 슬랩 할당자(slab allocator)를 이용한 개선된 메모리풀을 제안한다. 이 방법은 메모리풀의 메모리 블록 집합을 할당 상태에 따라 동적으로 재배열한다. 동적 재배열된 메모리 블록 집합은 단일 메모리 블록 집합의 단편화를 줄이고, 할당된 메모리 블록의 지역적인 특성을 유지해준다. 단일 메모리 블록 연결 구조의 메모리풀은 메모리 할당 및 반환 요청을 처리하기 위해 전체 메모리 블록 집합을 탐색해야 하지만, 동적 재배열된 메모리 블록 집합은 탐색 범위를 제한하여 메모리풀의 메모리 블록 할당 및 반환 성능을 향상시킨다. 이를 통해 얻은 성능 향상을 동적 메모리 할당처럼 다양한 크기의 메모리 블록을 할당할 수 있는 메모리풀을 구성하는데 사용할 수 있다.

산성적토에 Ca 및 Mn 처리가 Alfalfa와 clover의 생장에 미치는 영향

權炳奎 慶北大學校 1969 論文集 Vol.13 No.-

Two grasses, alfalfa and clover, were initially cultured on 500cc. Hoagland's No. 1 solution (from 8, May, 1969). On 29, June, 1969, the plants were transferred to a lateritic (barren, acid, red soil) and treated with different concentrations of Ca and Mn. The results are as follows: 1. The growth of the grasses was greater after treatment with 0.5 ppm Mn in the lateritic red soil. 2. When the grasses were supplied with Ca and Mn, the growth was greater after treatment with low Mn and high Ca concentrations. 3. The nodule formation of the roots was greater after treatment with only 1 ppm Mn. 4. When the grasses were supplied with Ca and Mn, the nodule formation was greater after treatment with low Mn and high Ca concentrations. In order to cultivate alfalfa and clover in a lateritic soil in Korea, Ca and Mn must be supplied.

완두 식물에 있어서 Mn^54의 흡수 및 체내 이동에 관한 연구

권병규 慶北大學校 1964 論文集 Vol.8 No.-

An experiment on absorption and redistribution of Mn^54 is done with the pea plant in culture solution including Mn^54. The results are as follows; 1. Mn^54, which is absorbed from one of the roots of the pea is distributed to every part. But Mn^54, which is absorbed from particular root of peppermint plants, is distributed to a particular part of the leaves. 2. The radioautograph of redistribution of Mn^54 which has been absorbed shows that Mn^54 translocates swiftly from old leaves to the mesophyll tissues of new leaves. 3. An experiment on rate of absorption and distribution pattern of Mn^54 caused by the removal of elements from modified knop's solution is done. a. The total quantity of Mn^54 caused by the difficiency of elements is absorbed with the rate of Ca>K>Mg>Fe>N>Complete. b. The quantity of distribution of each part of the pea plant is distributed with the order of Fe>Ca>K, Mg>N>Complete in the leaves, and complete>N>Mg>Ca>K>Fe in the roots. The quantity of Mn^54 used in the above experiment is measured by the micro-radioautograph and the radioactivity which is counted by G-M. Counter.

상치잎의 色素, 蛋白質含量 및 光系Ⅱ活性에 미치는 Sulfite와 산성 pH의 影響

權炳奎,鄭華淑,柳岑台 慶北大學校 師範大學 1986 敎育硏究誌 Vol.28 No.-

The present study was investigated to clarify the changes of pigments and soluable protein content, and PS Ⅱ activity of lettuce(Lactuca saliva L.) leaves induced by sulfite and acidic pH treatment. Lettuce leaves were treated with sodium sulfite at different concentrations, treatment time, and pH values. The leaf disks were illuminated at 20,000 lux and placed in darkness. Under the light condition pigments content, protein content and the rate of DCIP photoreduction were gradually reduced with the increase of sulfite concentration and treatment time below pH 5, but not in darkness. With treatment of 10mM sulfite for 3 hours at pH 7.0, pigments content were reduced by 21% in chlorophyll a, 17% in chlorophyll b, 14% in carotenoid, and protein content were also reduced by 47% in lettuce leaves. The rate of DCIP photoreduction were inhibited by 78% under the same conditions.

에러 처리 방식의 변환을 위한 확장된 C++ RTTI 연산자: exception_cast

권병규,신병석 한국차세대컴퓨팅학회 2012 한국차세대컴퓨팅학회 논문지 Vol.8 No.2

본 연구에서는 리턴값 기반 에러 처리를 예외 기반 에러 처리로 변환하는 exception_cast를 제안한다. 함수의 리턴값이나 상태 변수를 사용하는 에러 처리 방식은 에러가 발생했을 때 프로그램 수행을 강제적으로 제어할 수단이 없기 때문에 에러 발생 시점과 에러 검출 시점이 일치하지 않을 수 있다. 예외는 프로그램의 실행을 제어할 수 있으며, 에러 처리 코드의 중복을 줄이기 때문에 에러에 견고한 코드를 작성하는데 유리하다. exception_cast는 예외 처리의 장점을 활용하기 위해, 리턴값이나 상태 변수로 에러를 나타내는 함수들이 일관적으로 예외를 사용하도록 변환한다. exception_cast는 C++ RTTI(RunTime Type Information) 형변환 연산자의 개념을 확장한 것이며, 함수의 수행 결과값이 에러를 검출하기 위해 사용된다는 것을 명시적으로 나타낸다.

Cycloheximide가 옥수수(Zea mays L.) 잎의 노화과정에 미치는 영향

權炳奎,李承姸 경북대학교 과학교육연구소 1989 科學敎育硏究誌 Vol.13 No.-

The present study was investigated to clarify the changes of chlorophyll (a,b) and soluble protein content, absorption spectrum, PSⅡ activity and CP-complex in senescence of corn (Zea mays L.) leaves induced by cycloheximide at different concentrations and times. The leaf disks were placed in darkness at 25℃ ± 2℃. After leaf disks were treated with cycloheximide at various concentrations, the chlorophyll content was measured on the 4th. day. Cycloheximide clearly showed strong preservation of chlorophyll at the concentration of 0.01-1mM. Cycloheximide at 0.001mM did not prevent the chlorophyll degradation. Cycloheximide(0.1mM) prevented the loss of chlorophyll. About 70% of initial content of Chl. a and 71% initial content of Chl. b remained on the 6th. day. The absorption spectra of DMSO extracts from corn leaf disks that had been incubated for 4 days in distilled water or 0.1mM cycloheximide were measured. When leaf disks were incubated with cycloheximide, both the peaks for the red band of chlorophyll and the carotenoid band remained fairly extent. Cycloheximide(0.1mM) prevented the loss of soluble protein, and about 70% of initial content of soluble protein remained on the 6th. day. Cycloheximide(0.1mM) treatment inhibited the rate of DCIP photoreduction by 60%. When CP-complexes and thylakoid polypeptide were separated by SDS-PAGE, CP Ⅰ, CPⅡa, LHCP bands were disappeared, FP band was quantitatively increased, and thylakoid polypeptide bands were partly disappeared, with cycloheximide(0.1mM) treatment. Therefore, cycloheximide prevented the loss of chlorophyll and soluble protein, destroyed thylakoid membrane of chloloplast, and inhibited PSⅡ activity.