Analysis of Pattern Generalization Problems of Korean Mathematics Textbook

Lee,Chong Hee,Lee,Soo Youn 이화여자대학교 교과교육연구소 2013 교과교육학연구 Vol.17 No.4

The purpose of this study is to better understand the pattern generalization problems posed in the current school curricula of Korea. Twelve of most recently published elementary school (1st to 6th grade) mathematics textbooks and twelve Middle school (7th to 9th grade) mathematics textbooks (a total of 24 mathematic textbooks) were selected for the analysis. First, the different types and characteristics of pattern generalization problems based on previous research were categorized. Within these categories, we analyzed which pattern problems were emphasized in the school curriculum. The results indicate that ‘relating problems’ were mainly introduced in elementary school textbooks. ‘Searching for the same relationship’ and ‘procedure problems’ increased across the grades. ‘Pattern searching problems’ decreased across the grades, while ‘result searching’ and ‘pattern extension problems’ were rarely introduced. ‘Justification problems’ were inconsistently emphasized across the grades. With respect to the situational characteristics of the pattern generalization problems, ‘factual pattern generalization problems’ were consistently introduced across the grades, while ‘contextual pattern generalization problems’ and ‘symbolic pattern generalization problems’ were introduced only to a limited extent. Regarding the various types of pattern problems, only limited types of problems were proposed in both the elementary and middle school mathematic textbooks. From this study, we hope to address how the pattern generalization problems in the Korean mathematics curriculum lack pattern exercises in the curriculum core. We also hope to provide data which could lead to the development of a variety of pattern generalization problems in Korean mathematics textbooks in the future.

정신분열병에 대한 리스페리돈의 효과 및 안정성

이민수,김용구,김영훈,연병길,오병훈,윤도준,윤진상,이철,정희연,강병조,김광수,김동언,김명정,김상훈,김희철,나철,노승호,민경준,박기창,박두병,백기청,백인호,손봉기,손진욱,양병환,양창국,우행원,이정호,이종범,이홍식,임기영,전태연,정영조,정영철,정인과,정인원,지익성,채정호,한상익,한선호,한진희,서광윤 大韓神經精神醫學會 1998 신경정신의학 Vol.37 No.1

연구목적 : 본 시험의 목적은 임상시험 시작전에 연구자들을 대상으로 PANSS Workshop을 통하여 PANSS, ESRS에 대한 국내에서의 표준화 작업을 구축하고 새로운 정신병 치료제인 리스페리돈의 효과와 안정성을 재확인하여 리스페리돈 사용에 대한 적정화를 이루는데 있다. 연구방법 : 1996년 4월부터 1996년 9월까지 국내 39개 대학병원 정신과에 입원중인 혹은 증상이 악화되어 입원하는 정신분열병 환자 377명을 대상으로 다시설 개방 연구를 시행하였다. 1주일간의 약물 배설기간을 가진후, 리스페리돈을 8주간 투여하였고, 기준점, 1주, 2주, 4주, 그리고 8주후에 평가되었다. 용량은 제1일에는 리스페리돈 1mg씩 1일 2회, 제2일에는 2mg씩 1일 2회, 제3∼7일에는 3mg씩 1일 2회 투여하였다. 이후 환자의 임상상태에 따라 임의로 증량할 수 있으며, 최대 일일 16mg을 초과하지 않도록 하였다. 추체외로 증상을 조절하기 위한 투약을 허용하였다. 임상증상 및 부작용의 평가는 PANSS(Positive and Negative Syndrome Scale), CGI(Clinical Global Impression) 그리고 ESRS(Extrapyramidal Symptom Rating Scale)을 사용하였다. 연구결과 : 377명중 343명(91%)이 8주간의 연구를 완결하였다. 치료 종결시점인 8주후 PANSS 총점수가 20% 이상 호전된 경우를 약물 반응군으로 정의할때, 약물반응군은 81.3%였다. 리스페리돈에 반응하는 예측인자로는 발병연령, 이전의 입원 횟수, 유병기간이 관련 있었다. 리스페리돈은 1주후부터 PANSS양성, 음성, 및 일반정신병리 점수상에 유의한 호전을 보여 효과가 빨랐다. CGI의 경우도 기준점에 비해 1주후부터 유의한 감소를 나타내었다. ESRS의 경우, 파킨슨 평가점수는 기준점과 비교해 투여 1주, 2주, 4주후 유의하게 증가되었다가 8주후 기준점과 차이가 없었다. Dystonia 평가점수는 1주후만 유의한 증가를 보였으며, dyskinesia 평가점수는 유의한 차이가 없었다. 혈압, 맥박수의 생명징후 및 일반 혈액학 검사, 생화학적 검사, 심전도 검사에서 유의한 변화는 없었다. 결 론 : 이상의 다시설 개방 임상 연구를 통해 리스페리돈은 정신분열병 환자에서 양성증상뿐만 아니라 음성증상 및 전반적인 증상에도 효과적인 것으로 사료된다. 보다 명확한 평가를 위해서는 다른 항정신병약물과의 이중맹검 연구가 필요할 것으로 생각되며, 또한 장기적 치료에 대한 평가도 함께 이루어져야 하겠다. Objective : The purpose of this study was to investigate the efficacy and safety of risperidone in the treatment of Korean schizophrenic patients. Method : This multicenter open study included 377 schizophrenic patients drawn from 39 university hospitals. After a wash-out period of 1 week, the schizophrenic patients were treated with risperidone for 8 weeks and evaluated at 5 points ; at baseline, and 1, 2, 4 and 8 weeks of treatment. The dose was increased from 2mg/day(1mg twice daily) to 6mg/day(3mg twice daily) during the first week and adjusted to a maximum of 16mg/day over the next 7 weeks according to the patient's clinical response. Medication to control extrapyramidal symptoms was permitted. The psychiatric and neurological status of the patients was assessed by PANSS, CGI, and ESRS scales. Results : 343(91%) of 377 patients completed the 8-week trial period. Clinical improvement, as defined by a 20% or more reduction in total PANSS score at end point, was shown by 81.3% of patients. The predictors of response to risperidone were associated older age, shorter duration of illness, fewer previous hospitalization. Risperidone had rapid onset of action ; a significant decrease of the total PANSS and three PANSS factor(positive, negative, general), and CGI was already noticed at the end of first week. For the ESRS, parkinsonism rating scores were significantly increased until week 4 comparing with baseline. Dystonia rating scores were significantly increased until week 1, and dyskinesia rating scores were not significantly changed during the study. Laboratory parameters including vital sign, EKG, hematological, and biochemical values showed no significant changes during the trial. Conclusions : This study suggests that risperidone is generally safe and effective against both the positive and negative symptoms in our group of patients.

크롬(Ⅵ)의 체내 흡수와 소실속도에 관한 연구

김현영,이성배,임철홍,이권섭,정용현,이종성,한정희,전윤석,황호순,이용묵 한국산업위생학회 2003 한국산업보건학회지 Vol.13 No.1

The CrO3 mostly used in plating. metal surface disposal, leather, cosmetic manufacturing, as an experiment material by repeatedly inhaling and exposure the male S.D. rats at a 0.00, 0.2., 0.50, 1.25 mg/㎡ concentration(particle size: 0.5-0.5 aerosol)6hours a day, 5day a week in 13weeks comparing with 2weeks, 8weeks of recovery group about the noxiousness of the experiment animal and the reduce scale of the CrO3 in the internal organ especially in blook and respiratory organ with the period of convalescent and clearance. The experiment results which we received are as follows. 1. In blood the RBC, HGB and HCT experiment, rats with 0.20, 0.50 mg/㎡ concentration showed that there were some decreases but not dependent. The kidneys absolute weight compared with control group was reduced intentionally(p〈0.05) and the lungs absolute weight compared with control group showed intentional increase(p〉0.05). 2. After the exposure of the experiment material, the whole blook, l\blood plasma and red blood cell in blood by (x): the period of convalescent, per (y); the decreasing of Cr concentration, was y=66.51 e -0.057x, y=67.2 e-0.101x, y=70.01 e-0.030 in 0.50 mg/㎡ exposure concentration by calculating the clearance coefficient of correlation, and the half life (day)was estimated 12.0, 6086, 23.0 each. 3, After the exposure of the experiment material, the experiment animals lung, liver and kidneys by(x); the period of convalescent, per (y); the decreasing of Cr conentration, was y=1808 e-0.00493x, y=12.02e-0.0297x, y=67.61 e-0.0292x in 0.50mg/㎡ exposure concentration by calculating the clearance coefficient of correlation, and the half life(day)was estimated 140.6, 23.3, 23.7, each, and including lung, liver with all of the experiment internal organs, the Cr clearance decreased as the exposure concentration increased.

여름 캠프활동에 관한 연구 : 서울여대 부속유치원 여름 캠프활동을 중심으로

민행난;최윤선;최인경;민혜원;임양선;이윤희;이상희 서울여자대학교 1998 아동연구 Vol.3 No.-

[초록없음]

SD Rats를 이용 1-hexene의 흡입독성 연구

김현영,임철홍,정용현,이권섭,이성배,이준연,한정희,전윤석,이용묵 한국환경독성학회 2001 환경독성보건학회지 Vol.16 No.4

The purpose of this study was to investigate the acute (4 hours) and repeated-dose (6 hours a day, 5 days a week, 4 weeks) toxic effects of I -hexene on Sprague- Dawley (SD) rats which were treated by inhalation. The results were as follows; I. The median lethal concentration (LC_(50)) was estimated 52,694 ppm (confidence limit 95%; 49,494~55,447 ppm) in acute inhalation. Abnormal clinical signs related to the l-Hexene were not observed with the acute inhalation dose. Gross findings of necropsy revealed on evidence of specific toxicity related to the 1-hexene, II. By repeated inhalation exposure the body weight of male were more or less reduced by the dose of 2,500 ppm and 5,000 ppm compared with control group. However there were no significant variation hematology and blood biochemistry for the exposed rats compared with the control rats. Abnormal clinical signs and gross findings of necropsy related to the 1-hexene were not shown. In conclusion when we exposed I-hexene to SD rats for 4 weeks, 5 days per week, 6 hours per day, the Lowest observed effect level (LOEL) was over 2,500 ppm and Non observed effect level (NOEL) was below 500 ppm.

학교평생교육에 대한 현직교사의 인식 조사 연구 : 서울시 초등학교 교사를 중심으로

전주성,유은수,한수연,이현주,임희연,이희송 한국성인교육학회 2007 Andragogy Today : International Journal of Adult & Vol.10 No.3

경기지역 기혼남성의 식생활 관리의식 및 참여도에 관한 연구

이강자,이윤희 동아시아식생활학회 2004 동아시아식생활학회지 Vol.14 No.3

As a result of the sudden change of our society and the increasing employment of married women, it is necessary for men to participate in household works. The purpose of this study was to investigate consciousness of and participation in meal management of 30 to 50 years old Korean married men, living in Incheon and Ganghwa. The younger and the lower the education, consciousness about the meal management was lower. More than half of the subjects responded 'Men can do participate in preparation of meals if necessary' and the lowest of the subjects responded 'Men should not participate in preparation of meals'. It showed that the consciousness of participation in meal management was changing positively. Although the consciousness of participation in meal management was positive, the real rate of meal management participation was not that high. Men were participated in grocery shopping, dish washing, cooking and menu planning in order. The average score of nutrition knowledge was high but there was no significant correlation between the nutrition knowledge and the participation in meal management. There were no correlations between the consciousness of and the participation in meal management. But there were strong correlation among each other in meal management behaviors such as grocery shopping, dish washing, cooking and menu planning. Our results suggested that nutritional education should be carried out in menu planning and cooking demanding knowledge and training.

직물디자인 분야에서 2 DPC CAD 시스템의 적용 및 운용에 관한 연구

이영희,이연순 영남대학교 지역발전연구소 1997 새마을지역개발연구 Vol.21 No.-

In this study the writers investigated the menus and functions of the 2DPC CAD system and researched the method of applying it to the textile design. The results of this study are as follow ; 1. The color palette menu is used to select colors and to give information on them. Using this menu we can select, modify, or change the colors. Further we can enter the utility menu. 2. The special option menu is useful when we operate the menu strip upward or downward. It is also useful when we cancel the input material. By using this, we can compile or modify after dividing the current image to rather small piece or fragment. Further, we can zoom to view the screen and lock or unlock the menu strip. 3. The color control section in the utility menu is applied to change, set, and copy colors. It is also applied to select color shades or background colors. 4. The disk commands of the utility menu allow us to execute function such as loading and saving disk files. The input system allows us to bring in images from the outside. The output system allows us to produce hard copy and output images on the screen. The settings menu is applied on changing environmental parameters and modifying the device used the primary input. The clear command allows us to the current space menu is applied to arrange the space of material temporally. The exit 2DPC is applied to escape from the 2DPC package temporarily.

중등학교 체육수업 운영실태와 문제점 및 미래의 과제

이광재,김윤래,김승재,황향희,김수남 江原大學校附設 體育科學硏究所 1996 江原大學校附設體育科學硏究所論文集 Vol.- No.20

The purpose of this study was to offer the basic materials on the secondary physiscl education. The subjects were 129 physiscl education teachers at K provience. The results were as follows: In teaching learning methods, the more educated experience teacher had the more improvement feeled. In the degree of difficulty of current physiscl curriculum, the more educated experience teacher had, the higher it was to be thought. In the goal achievement, the more educated experience had, the more it affected the goal achievement. The efficiency and ability of methods was not shown a significant difference among educated experience group, but shouled be consider it. The equipment and implement of goal achievement was not show a significant difference among educated experience group, but should be consider it. The evaluation of propriety and objectivity and on psychomotor, affective, and cognitive domain was not shown a significant difference.

식품영양표시 제도에 대한 소비자 인식 및 이용실태 : 20대 남녀를 중심으로

이강자,이윤희 동아시아식생활학회 2004 동아시아식생활학회지 Vol.14 No.1

This study was accomplished to investigate the recognition and the using practices about food-nutrition labeling system of 20's consumers. Two hundred and fifty-four man and women were examined using the questionnaire. The results were as follows. 1. The degree of recognition of subjects about food-nutrition labeling system was low (43.3%) and the using practices were even lower (18.1%). 2. The items considered as important were in the order of shelf life, manufactured date and cost. 3. The confidence score to the food-nutrition labeling system of consumers was 3.2 and was higher in the females compared to males. 4. The preferred method of food-nutrition labeling was in the order of picture and graphic type method, table type method and descriptive type method. 5. The expected effects of the current food-nutrition labeling system were easy to select foods for the prevention of the adult diseases and diet therapy. From these results, we might propose the conclusion as follows: Food-nutrition labeling system might be a good source of nutrition information and the consumers' demand for disease-prevention and dietary purpose. Therefore, the agencies concerned should make an every effort for the successful implementation of food-nutrition labeling system.