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Koide, Takeshi,Sandoh, Hiroaki Korean Institute of Industrial Engineers 2013 Industrial Engineeering & Management Systems Vol.12 No.2
It is difficult to determine an appropriate discount price for daily perishable products to increase profit from a long-term standpoint. Even if the discount pricing is efficient to increase profit of the day, consumers memorize the sales price and they might hesitate to purchase the product at a regular price the following day. The authors discussed the inventory clearance pricing for a single period in our previous study by constructing a mathematical model to derive an optimal sales price to maximize the expected profit by considering the reference price effect of demand. This paper extends the discussion to handle the discount pricing for multiple periods. A mathematical analysis is first conducted to reveal the properties on an objective function, which is the present value of total expected profits for multiple periods. An algorithm is then proposed to derive an optimal price for asymmetric consumers. Numerical experiments investigate the characteristics of the objective function and optimal pricings.
A Mathematical Analysis on Daily Inventory Clearance Pricing with Consumer's Reference Price
Koide, Takeshi,Sandoh, Hiroaki Korean Institute of Industrial Engineers 2012 Industrial Engineeering & Management Systems Vol.11 No.1
This paper discusses a clearance pricing on daily perishable products considering a reference price of consumers. The daily perishable products are sometimes sold at a discount price before closing time to stimulate demand when the number of unsold products is more than initially envisioned. The discount pricing results both in an increase of the revenue of the day and in a decrease of the disposal cost. The discounting, however, also declines a reference price of consumers which is a mental price and serves as an anchor price to judge if a current sales price is loss or gain for the consumers. An excess discounting decreases the demand for the products sold at a regular price in the future and diminishes long-term profit. This study conducts a mathematical analysis on the clearance pricing problem for a single period with stochastic variations both on demand and on the inventory level at clearance time. The expected profit function especially depends on the response of consumers to the clearing price against their reference prices. A procedure is proposed to derive an optimal clearance price when consumers are loss-neutral. A sufficient condition is shown to obtain an optimal price for loss-averse and loss-seeking consumers by an analogous procedure.
Koide, Taro,Kashiwazaki, Gengo,Suzuki, Masaaki,Furukawa, Ko,Yoon, Min-Chul,Cho, Sung,Kim, Dongho,Osuka, Atsuhiro WILEY-VCH Verlag 2008 Angewandte Chemie. international edition Vol.47 No.50
<B>Graphic Abstract</B> <P>A stable radical: The title compound 1 has been synthesized as the first example of a meso-free variant and characterized as a strongly aromatic macrocycle with a spectacles-like planar conformation. The incorporation of free meso positions is promising for the exploration of novel structural and electronic properties. <img src='wiley_img/14337851-2008-47-50-ANIE200804570-content.gif' alt='wiley_img/14337851-2008-47-50-ANIE200804570-content'> </P>
Numerical Method for General Relativistic Magnetohydrodynamics in Kerr Space-Time
KOIDE SHINJI,SHIBATA KAZUNARI,KUDOH TAKAHIRO,MEIER DAVID L. The Korean Astronomical Society 2001 Journal of The Korean Astronomical Society Vol.34 No.4
We present the whole basis of numerical method and useful formulae for general relativistic magnetohydrodynamic simulations in Kerr space-time.
Family gauge boson production at the LHC
Koide, Y.,Yamanaka, M.,Yokoya, H. North-Holland Pub. Co 2015 Physics letters. Section B Vol.750 No.-
Family gauge boson production at the LHC is investigated according to a U(3) family gauge model with twisted family number assignment. In the model we study, a family gauge boson with the lowest mass, A<SUB>1</SUB><SUP>1</SUP>, interacts only with the first generation leptons and the third generation quarks. (The family numbers are assigned, for example, as (e<SUB>1</SUB>,e<SUB>2</SUB>,e<SUB>3</SUB>)=(e<SUP>-</SUP>,μ<SUP>-</SUP>,τ<SUP>-</SUP>) and (d<SUB>1</SUB>,d<SUB>2</SUB>,d<SUB>3</SUB>)=(b,d,s) [or (d<SUB>1</SUB>,d<SUB>2</SUB>,d<SUB>3</SUB>)=(b,s,d)].) In the model, the family gauge coupling constant is fixed by relating to the electroweak gauge coupling constant. Thus measurements of production cross sections and branching ratios of A<SUB>1</SUB><SUP>1</SUP> clearly confirm or rule out the model. We calculate the cross sections of inclusive A<SUB>1</SUB><SUP>1</SUP> production and bb@?(tt@?) associated A<SUB>1</SUB><SUP>1</SUP> production at s=14 TeV and 100 TeV. With the dielectron production cross section, we discuss the determination of diagonalizing matrix of quark mass matrix, U<SUB>u</SUB> and U<SUB>d</SUB>, respectively.
Facsimile Image Processor Using Threshold-Adaptive Binarization Technique
Koide, Hideki,Kim, Chol,Shono, Katsufusa 대한전자공학회 1991 ICVC : International Conference on VLSI and CAD Vol.2 No.1
Using simplified retina model, the connection between the optic cells to the optic nerve was described as a two-dimensional window function and the signal operation was represented by combining five sigma operators described as MAX, MIN, DEL, AVE and CEN. Results of the operations are mutually compared by use of the threshold function. The threshold of binarization was given as a function of the local average level. and the background brightness. The image processor was fabricated with 1.5um CMOS technology as a 2,000-gate chip. Using this chip, the image blurring was effectively restored and separation of characters and pictures was fairly achieved.
Koide, Taro,Furukawa, Ko,Shinokubo, Hiroshi,Shin, Jae-Yoon,Kim, Kil Suk,Kim, Dongho,Osuka, Atsuhiro American Chemical Society 2010 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.132 No.21
<P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jacsat/2010/jacsat.2010.132.issue-21/ja101040s/production/images/medium/ja-2010-01040s_0006.gif'> <P>A <I>meso</I>,<I>meso</I>-diketohexaphyrin was isolated and characterized as a chemically stable non-Kekulé singlet biradicaloid. Two unpaired electrons are seemingly delocalized on two tripyrrolic units separated by C?O bonds. These results underscore the potential of expanded porphyrins to achieve unique electronic states.</P></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ja101040s'>ACS Electronic Supporting Info</A></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ja101040s'>ACS Electronic Supporting Info</A></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ja101040s'>ACS Electronic Supporting Info</A></P>
A Mathematical Analysis on Daily Inventory Clearance Pricing with Consumer's Reference Price
Takeshi Koide,Hiroaki Sandoh 대한산업공학회 2012 Industrial Engineeering & Management Systems Vol.11 No.1
This paper discusses a clearance pricing on daily perishable products considering a reference price of consumers. The daily perishable products are sometimes sold at a discount price before closing time to stimulate demand when the number of unsold products is more than initially envisioned. The discount pricing results both in an increase of the revenue of the day and in a decrease of the disposal cost. The discounting, however, also declines a reference price of consumers which is a mental price and serves as an anchor price to judge if a current sales price is loss or gain for the consumers. An excess discounting decreases the demand for the products sold at a regular price in the future and diminishes long-term profit. This study conducts a mathematical analysis on the clearance pricing problem for a single period with stochastic variations both on demand and on the inventory level at clearance time. The expected profit function especially depends on the response of consumers to the clearing price against their reference prices. A procedure is proposed to derive an optimal clearance price when consumers are loss-neutral. A sufficient condition is shown to obtain an optimal price for loss-averse and loss-seeking consumers by an analogous procedure.