• 제목/요약/키워드: formulas

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수학적 탐구학습이 넓이공식의 학습에 미치는 효과 (The Effects of Inquiry Oriented Instruction on the Learning of A rea Formulas)

  • 박성선
    • 한국수학교육학회지시리즈C:초등수학교육
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    • 제14권1호
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    • pp.43-55
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    • 2011
  • 수학적 탐구 학습은 학생들로 하여금 흥미로운 문제를 적극적으로 탐구함으로써 수학적 내용을 학습할 수 있고 탐구하는 과정에서 창의성이 계발될 수도 있다. 탐구 활동이 창의성을 개발시킬 수 있다는 점은, 학생들이 어떤 완성된 형태로서 수학을 암기하고 수학문제를 해결하는 것이 아니라, 수학 과제를 탐구하는 과정에서 창의적인 아이디어가 산출될 수 있다는 것이다. 이러한 점에서 수학 학습 활동에 있어서 수학적 탐구의 과정이 반드시 필요하다고 본다. 평행사변형의 넓이 공식을 도입할 때, 탐구의 과정으로 지도한다는 의미는 직사각형의 넓이 공식을 이미 알고 있기 때문에 평행사변형을 직사각형으로 어떻게 만들 것인가 하는 탐구의 과정을 반드시 거쳐야 한다는 것이다. 따라서 본 연구에서는 탐구 학습을 통한 넓이의 지도가 넓이에 관한 수학성취도에 어떤 효과를 미치는지를 알아 보고 넓이 공식의 기억과 유도 과정에 영향을 주는지를 실험연구를 통하여 분석하였다.

Assessment of Palm Press Fibre and Sawdust-Based Substrate Formulas for Efficient Carpophore Production of Lentinus squarrosulus (Mont.) Singer

  • Osibe, Dandy Ahamefula;Chiejina, Nneka Virginia
    • Mycobiology
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    • 제43권4호
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    • pp.467-474
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    • 2015
  • Development of efficient substrate formulas to improve yield and shorten production time is one of the prerequisites for commercial cultivation of edible mushrooms. In this study, fifteen substrate formulas consisting of varying ratios of palm press fibre (PPF), mahogany sawdust (MS), Gmelina sawdust, wheat bran (WB), and fixed proportions of 1% calcium carbonate ($CaCO_3$) and 1% sucrose were assessed for efficient Lentinus squarrosulus production. Proximate compositions of mushrooms produced on the different substrate formulas were also analysed and compared. Substrate formulations containing 85% PPF, 13% WB, 1% $CaCO_3$, and 1% sucrose were found to produce the highest carpophore yield, biological efficiency and size (206.5 g/kg, 61.96%, and 7.26 g, respectively). Days to production (first harvest) tended to increase with an increase in the amount of WB in the substrate formulas, except for PPF based formulas. The addition of WB in amounts equivalent to 8~18% in substrate formulas containing 80~90% PPF resulted in a decrease in the time to first harvest by an average of 17.7 days compared to 80~90% MS with similar treatment. Nutritional content of mushrooms was affected by the different substrate formulas. Protein content was high for mushrooms produced on formulas containing PPF as the basal substrate. Thus, formulas comprising PPF, WB, $CaCO_3$, and sucrose at 85% : 13% : 1% : 1%) respectively could be explored as starter basal ingredients for efficient large scale production of L. squarrosulus.

CERTAIN DECOMPOSITION FORMULAS OF GENERALIZED HYPERGEOMETRIC FUNCTIONS pFq AND SOME FORMULAS OF AN ANALYTIC CONTINUATION OF THE CLAUSEN FUNCTION 3F2

  • Choi, June-Sang;Hasanov, Anvar
    • 대한수학회논문집
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    • 제27권1호
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    • pp.107-116
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    • 2012
  • Here, by using the symbolical method introduced by Burchnall and Chaundy, we aim at constructing certain expansion formulas for the generalized hypergeometric function $_pF_q$. In addition, using our expansion formulas for $_pF_q$, we present formulas of an analytic continuation of the Clausen hypergeometric function $_3F_2$, which are much simpler than an earlier known result. We also give some integral representations for $_3F_2$.

Types of Special Infant Formulas Marketed in Korea and Their Indications

  • Hong, Suk Jin
    • Pediatric Gastroenterology, Hepatology & Nutrition
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    • 제21권3호
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    • pp.155-162
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    • 2018
  • Infant formula is classified into standard cow's milk-based and special formulas. This review aimed at summarizing the types of special milk formulas currently sold in Korea, and the appropriate indications for the use of these formulas; lactose free formula, soy-based formula, protein hydrolysate formula, amino acid-based formula, preterm formula, medium chain triglyceride formula, low-phosphorus formula, protein-energy-enriched formula, and formulas for inborn errors of metabolism.

CERTAIN IDENTITIES ASSOCIATED WITH CHARACTER FORMULAS, CONTINUED FRACTION AND COMBINATORIAL PARTITION IDENTITIES

  • Chaudhary, M.P.;Choi, Junesang
    • East Asian mathematical journal
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    • 제32권5호
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    • pp.609-619
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    • 2016
  • Folsom [10] investigated character formulas and Chaudhary [7] expressed those formulas in terms of continued fraction identities. Andrews et al. [2] introduced and investigated combinatorial partition identities. By using and combining known formulas, we aim to present certain interrelationships among character formulas, combinatorial partition identities and continued partition identities.

Recursion Formulas for Exton's triple Hypergeometric Functions

  • Sahai, Vivek;Verma, Ashish
    • Kyungpook Mathematical Journal
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    • 제56권2호
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    • pp.473-506
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    • 2016
  • This paper continues the study of recursion formulas of multivariable hypergeometric functions. Earlier, in [4], the authors have given the recursion formulas for three variable Lauricella functions, Srivastava's triple hypergeometric functions and k-variable Lauricella functions. Further, in [5], we have obtained recursion formulas for the general triple hypergeometric function. We present here the recursion formulas for Exton's triple hypergeometric functions.

CERTAIN REDUCTION AND TRANSFORMATION FORMULAS FOR THE KAMPÉ DE FÉRIET FUNCTION

  • Rakha, Medhat A.;Rathie, Arjun K.
    • 대한수학회논문집
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    • 제37권2호
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    • pp.473-496
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    • 2022
  • In 2014, Liu and Wang established a large number of interesting reduction, transformation and summation formulas for the Kampé de Fériet function. Inspired by the work, we aim to find further several transformation and reduction formulas for the Kampé de Fériet function. Theses formulas are mainly based on the formulas given by Liu and Wang [33].

A SURVEY OF KNOWN AND NEW CUBATURE FORMULAS FOR THE UNIT DISK

  • Cools, R.;Kim, K.J.
    • Journal of applied mathematics & informatics
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    • 제7권3호
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    • pp.709-717
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    • 2000
  • In addition to some new cubature formulas for the approximation of integrals over the unit disk, we present a survey of all known cubature formulas of algebraic degree for this region.

Evaluation and Categorization of Commercially Prepared Enteral Nutrition Formulas

  • Dong-Yeon Kim;Hee-Jae Suh
    • 대한지역사회영양학회지
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    • 제3권5호
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    • pp.729-738
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    • 1998
  • In order to investigate the types of enteral nutrition formulas currently used in hospitals and evaluate and categorize the commercially prepared enteral nutrition formulas formulas available in the domestic market, we asked dietitians working in 6 hospitals in Seoul to complete the questionnaire and obtained compositional characteristics of 12 commercially prepared enteral nutrition formulas. The average proportion of patients receiving the commercially prepared enteral nutrition formulas(60.6%) was greater than that of patients receiving the in-hospital preparations(31.9%). In the group of patients receiving the in-hospital prepared formulas, the enteral feeding was mainly administered orally, whereas, in the group of patients receiving the commercially prepared formulas, tube feeding was the primary route of formula administration. In both groups, however, a greater proportion of patients received the formulas as total replacements of their meals and for the purpose of dietary supplementation. On the basis of major criteria for evaluation of the commercially prepared enteral nutrition formulas, the 6 products out of the 9 nutritionally complete products formulated for the purpose of dietary supplementation were grouped into the same category(standard protein, caloric density of 1kcal/ml, and tube/oral), so they were considered therapeutically comparable. However, the remaining 3 products were different in protein content(high protein) or route of administration(tube only). Of the 3 nutritionally complete products formulated specifically for the purpose of dietary therapy, 2 products were formulated for patients with renal disease, and the one product was formulated for diabetic patients. Therefore, the data in this study showed that the commercially prepared enteral nutriton formulas became an important part of the enteral nutrition for hospitalized patients in Korea, but the domestic market has not yet generated a wide variety of the formulas, not providing many choices for clinicians to manage the diets for their patients. The results of this study would be helpful for clinicians in choosing appropriate products for their patients, for manufactures in developing new products, and for regulatory authorities to establish the regulation for the broad group of heterogeneous products that are marketed and will be developed as medical foods. In addition, the process of maintaining the categories for evaluation of the commercially prepared enteral nutrition formulas should be dynamic because new products may not reasonably fit any of the existing categories.

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소아약증직결(小兒藥證直訣)에 기재(記載)된 방제(方劑)의 특성분석(特性分析) (A Study on Formulas in "Xi$\v{a}$o' Er Y$\`{a}$o Zh$\`{e}$ng Zh$\'{\i}$ Ju$\'{\e}$(小儿藥証直訣)")

  • 조현진;박선동
    • 대한한의학방제학회지
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    • 제19권1호
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    • pp.35-49
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    • 2011
  • Objectives : This study aims to reveal the characteristics of formulas in "Xi$\v{a}$o' Er Y$\`{a}$o Zh$\`{e}$ng Zh$\'{\i}$ Ju$\'{\e}$. Methods : For that objectives, We analyzes formulas in "Xi$\v{a}$o' Er Y$\`{a}$o Zh$\`{e}$ng Zh$\'{\i}$ Ju$\'{\e}$. In the text, 132 formulas were described. To comprehend the formulas, we classified them as several bases. Results : After those analyses, we bring to a conclusion as follows. 1. 30 formulas are described that treated convulsive diseases (j$\={i}$ngf$\={e}$ng, 惊風). Next, g$\={a}$n(疳), parasite infection, diarrhea/dysentery, dermatosis and etc were in the order. 2. Classified by the formulation, Yu$\'{\a}$nj$\`{i}$(圓劑) was the best(70 kinds of formulas, 53%). S$\v{a}$nj$\`{i}$(散劑) was a form of 41 formulas(31%). T$\={a}$ngj$\`{i}$(湯劑) and g$\={a}$oj$\`{i}$(膏劑) were a form of 5 formulas each. 10 formulas were assumed the form of w$\`{a}$iy$\`{o}$ngj$\`{i}$(外用劑). 3. We researched in-depth analysis of Yu$\'{\a}$nj$\`{i}$. As a results, dosage, additive(輔料) and the time to take of Yu$\'{\a}$nj$\`{i}$ were decomposed. Also, the formulas that treated convulsive diseases were analyzed by the herbs classification. Conclusions : Though the formulas that treated convulsive diseases were hard to application at local clinic, overall nosology of pediatrics was reflected comparatively. "Xi$\v{a}$o' Er Y$\`{a}$o Zh$\`{e}$ng Zh$\'{\i}$ Ju$\'{\e}$ was expected to play a role for reconsideration of formulas' formulation.