학생들의 경제사고방식을 바꾸는 순수이론에 관한 경제수업

( Hisashi Kurihara ) 순천향대학교 사회과학연구소 2009 사회과학연구 Vol.15 No.2

고교생들은 일상적 삶 속에서 경제현상에 대한 단순한 이론을 인식한다, 그들은 순진한 이론을 가지고 경제학 강좌를 듣는다. 교사는 학생들에게 경제적 사고를 가르치지만 순수이론이 학생들에게 밀착되어 있기 때문에 교사의 설명만으로 순진한 경제학을 합리적인 경제적 사고로 유연하게 바꾸는 것이 쉽지 않다. 그래서 저자는 "산속의 숙소에서 판매되는 캔 주스가 왜 비싼가"라는 주요 질문으로 경제학 강좌를 개발시켰다. 이 강의에서 교사는 학생들이 경제적 현상에 대한 순수이론을 말로써 표현하도록 하고 또 인식론적 갈등을 가지도록 하였다. 일본에서는 경제에 관한 학생의 순진한 이해에 관한 연구가 많지 않다. 그래서 교실에서 효과적으로 경제적 사고를 가르치기 위해 더 많은 연구가 필요하다. Junior and senior high-school students construct their naive theories on economic phenomena in daily life. They attend economics classes with naive theories in their mind. Teachers teach the economic way of thinking to their students. But, generally, because the naive theories adhere closely to students, it is not easy to change their naive economics into the rational economic way of thinking smoothly by teachers` explanation. So, Kurihara developed an economics class with a main question that "why are canned juices sold in mountain lodges are expensive." In this class, teachers made students verbalize their naive theories on economic phenomena and have epistemic conflicts. In Japan, there are not so many researches about students` naive understanding on economy. Therefore, we need to conduct further researches to teach the economic way of thinking effectively in classes.

Detection of Hotspots on Spatial Data Using Principal Component Analysis

Koji Kurihara,문승호,Fumio Ishioka 한국자료분석학회 2006 Journal of the Korean Data Analysis Society Vol.8 No.2

Echelon analysis(Myers et al., 1997) is a method to investigate the phase-structure of spatial data systematically and objectively. This method is also useful to prospect the areas of interest in regional monitoring of a surface variable. The spatial scan statistic(Kulldorff, 1997) is a method of detection and inference for the zones of significantly high and low rates based on the likelihood ratio. These zones are called hotspots. Kurihara and Hong(2002) detected the hotspots area for geospatial lattice data based on the echelon analysis. This method is valid for the detection of univariate lattice data. With our approach, we can detect hotspots area for multivariate lattice data. The present paper takes an approach to echelon based on the spatial scan statistics and data reduction method such as principal component analysis(PCA). We apply this method to epidemiological data concerning some causes of death. We will attempt to investigate whether there exist the regional differences in mortality ratio for each cause or not, and if there are regional difference in each cause, we find which area is high mortality ratio or low mortality ratio.

EFFECT OF ENVIRONMENTAL TEMPERATURE ON WATER EVAPORATION OF COWS

Kurihara, M.,Takahashi, S.,Kume, S.,Aii, T. Asian Australasian Association of Animal Productio 1989 Animal Bioscience Vol.2 No.3

Stand-Alone Pico-Hydro Generation System using a High-Efficiency IPM Synchronous Generator

Kurihara, Kazumi,Kubota, Tomotsugu Journal of International Conference on Electrical 2014 Journal of international Conference on Electrical Vol.3 No.2

This paper presents a successful stand-alone pico-hydro generation system using a high-efficiency interior permanent-magnet (IPM) synchronous generator. A 1-kW 4-pole V-type IPM generator with low voltage regulation is used for laboratory test in stand-alone hydro energy conversion system. It has been found from experimental results that the constant output voltage is supplied stably by the proposed system under wide speed range.

APPLICATION OF WHOLE BODY COUNTER TO NEUTRON DOSE ASSESSMENT IN CRITICALITY ACCIDENTS

Kurihara, O.,Tsujimura, N.,Takasaki, K.,Momose, T.,Maruo, Y. 대한방사선 방어학회 2001 방사선방어학회지 Vol.26 No.3

Neutron dose assessment in criticality accidents using Whole Body Counter(WBC) was proved to be an effective method as rapid neutron dose estimation at the JCO criticality acciedent in Tokai-mura. The 1.36MeV gamma-ray of 24Na in a body can be detected easily by a germanium detector. The minimum Detectable Activity(MDA) of 24Na is approximately 50Bq for 10miniute measurement by the germanium-type whole body counter at JNC Tokai Works. Neutron energy spectra at the typical shielding conditions in criticality accidents were calculated and the conversion factor, whole body activity-to-organ mass weighted neutron absorbed dose, corresponding to each condition were determined. The conversion factor for uncollied fission spectrum is 7.7[(Bq24Na/g23Na)/mGy].

Effect of a Western-Style Diet Fortified with Increased Calcium and Vitamin D on Mammary Gland of C57Bl/6 Mice

Naoto Kurihara,Kunhua Fan,Howard T. Thaler,Kan Yang,Martin Lipkin 한국식품영양과학회 2008 Journal of medicinal food Vol.11 No.2

We previously reported hyperproliferation and hyperplasia in C57Bl/6 mouse mammary gland after feeding aWestern-style diet (WD); these findings decreased after supplementing WD with increased calcium and vitamin D3. We nowagain fortified WD with increased calcium and vitamin D3 from two sources: (1) a food source, calcium- and vitamin D3-en-riched yogurt (WDy diet) or (2) adding calcium and vitamin D3 directly to WD (WDCaD diet). After 6 months of feeding thenumber of mammary ducts was higher in mice consuming WD compared to WDy (216.0 vs. 202.7, P. .05) and WDCaD(216.0 vs. 194.9, P. .001). The percentage of small ducts increased in WD compared to AIN-76A controls (23.3% vs. 17.4%)but was lower in the WDy (17.1%) and WDCaD (14.8%) groups. WD mice had higher numbers of epithelial cells per ductthan WDy (33.2 vs. 27.4, P. .001) and WDCaD (33.2 vs. 27.8, P. .001) mice, and AIN-76A-fed mice had higher numbersthan WDy (31.1 vs. 27.4, P. .005) or WDCaD (31.1 vs. 27.8, P. .01) mice. Mitotic index was higher in WD than in WDCaD mice (0.0020 vs. 0.0009, P. .001). Thus, small mammary gland ductules and mitosis increased after feeding WDand decreased after supplementing the diets with increased calcium and vitamin D3, administered either in a dairy food (yo-gurt) or directly as calcium carbonate plus vitamin D3 in WD, suggesting further study of these nutrients for their possiblerelationship to breast cancer prevention.

DEVELOPMENT OF GENERAL DIAGNOSTIC REASONING SYSTEM AND ITS APPLICATION TO LOGIC CIRCUITS

Masahito Kurihara,Yoshimichi Kitaya,Azuma Ohuchi 대한전자공학회 1989 JTC-CSCC : Joint Technical Conference on Circuits Vol.- No.-

Two Images in Plato’s Statesman 277a-d

Yuji Kurihara 한국서양고전학회 2021 西洋古典學硏究 Vol.60 No.3

This paper focuses on two similes in the form of a sculptured image and a pictured image featured in Plato’s Statesman 277a-d and considers them in context in order to understand not only the structure and contents of the Statesman but also Plato’s methodological shift from the middle to the later dialogues. I begin by examining the first exchange between the Eleatic Stranger and Young Socrates (YS) at 277a to discover why Plato introduced these two images. After narrating the myth, the Stranger then tries to correct YS’s false belief that the myth is complete enough to clarify the nature of the king/statesman and his ‘double ignorance’ of falsely thinking that he knows what he does not know, which restricts his further inquiries. Comparing the myth to a sculpture and relying on two senses of παράδειγμα (a ‘model’ and an ‘exemplar’), the Stranger indicates that the myth is incomplete by making its parts too big—beyond their proper time and size— and attempts to persuade YS that he does not know yet what the king/statesman is. This explains how the sculptured image helps YS realize his ignorance and embark on a new investigation with the Stranger. The Stranger goes on to compare his philosophical method with drawing and painting a picture. This pictured image characterizes the myth as outlining the whole scheme of the king/statesman, and the method of division as painting parts colorfully and blending them well. This image not only emphasizes the incompleteness of the myth, but also sheds light on Plato’s shift of emphasis in philosophical methodology from two sides. First, suddenly changing the sense of ζῷον from ‘a portrait’ (277b8) to ‘living creature’ (277c4), that is, a ‘painting model,’ the Stranger develops the method of division from a simple dichotomous type used prior to this passage to a more advanced one, such as ‘the division by (animal) limbs’ (cf. 287c). This serves to specify the king/statesman’s proper functions (ἔργα) as ‘limbs’ compared with other citizens’ various functions in the rest of the dialogue. Second, by distinguishing between two types of investigators (those who can follow argument and speech to clarify the object itself, and those who rely on painting), the Stranger intends to use the method of division by limbs for the former type of the investigators rather than the method of literary devices typically utilized in the middle dialogues, such as myths, metaphors, analogies, and allegories, for the latter. Accordingly, this transitional passage with two impressive images marks a significant turning point in the whole dialogue, leading us to re-evaluate the role of the myth and prepare for the subsequent discussion based on the division by limbs. Finally, Statesman 277a-d prompts us to notice Plato’s new approach to dialectic in the later dialogues.

Evolution and Maintenance of Proxy Networks for Location Transparent Mobile Agents and Formal Representation By Graph Transformation Rules

Masahito Kurihara,Masanobu Numazawa 한국지능정보시스템학회 2001 한국지능정보시스템학회 기타 간행물 Vol.- No.-

A Weighted Additive Model for the Whole Demand Analysis of a Seasonally Dependent Product Using Meteorological and Regional Data, Considering Social Customs Factors and Policy Factors: Focus on Japanese Beer Demand Structure

Tsuyoshi Kurihara,Takaaki Kawanaka,Hiroshi Yamashita 대한산업공학회 2019 Industrial Engineeering & Management Systems Vol.18 No.4

In general, seasonally dependent products such as home air conditioners and beer are difficult to produce in a timelymanner to respond to demand because of the large seasonal fluctuations in demand. However, if highly accurate demand analysis/forecast is possible, production preparation for responding to demand fluctuations will be easier. Therefore, as a basis for such a demand analysis/forecast, to analyze the whole (nationwide) demand for a seasonally dependent product, this paper proposes a new weighted additive model for the whole demand analysis of a seasonallydependent product, i.e., Japanese beer, using meteorological and regional data, considering “regional characteristics ofclimate” and “regional homogeneity of demand together,” with the further addition of social customs factors, policyfactors, and a demand trend. Using the alternating least squares method, we attempt parameter estimation for the model with an inseparable parameter group generated by expressing “regional characteristics of climate” and “regionalhomogeneity of demand” together as a product of mutually independent factors (meteorological and regional factors). The results show that the proposed model is valid and provides insight into the effects of the factors influencing demand.