• Title/Summary/Keyword: special cases

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Experimental and finite element studies of special-shape arch bridge for self-balance

  • Lu, Pengzhen;Zhao, Renda;Zhang, Junping
    • Structural Engineering and Mechanics
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    • v.35 no.1
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    • pp.37-52
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    • 2010
  • Special-shape arch bridge for self-balance (SBSSAB) in Zhongshan City is a kind of new fashioned spatial combined arch bridge composed of inclined steel arch ribs, curved steel box girder and inclined suspenders, and the mechanical behavior of the SBSSAB is particularly complicated. The SBSSAB is aesthetic in appearance, and design of the SBSSAB is artful and particular. In order to roundly investigate the mechanical behavior of the SBSSAB, 3-D finite element models for spatial member and shell were established to analyze the mechanical properties of the SBSSAB using ANSYS. Finite element analyses were conducted under several main loading cases, moreover deformation and strain values for control section of the SBSSAB under several main loading cases were proposed. To ensure the safety and rationality for optimal design of the SBSSAB and also to verify the reliability of its design and calculation theories, the 1/10 scale model tests were carried out. The measured results include the load checking calculation, lane loading and crowd load, and dead load. A good agreement is achieved between the experimental and analytical results. Both experimental and analytical results have shown that the SBSSAB is in the elastic state under the planned test loads, which indicates that the SBSSAB has an adequate load-capacity. The calibrated finite-element model that reflects the as-built conditions can be used as a baseline for health monitoring and future maintenance of the SBSSAB.

Linear Programming Applications to Managerial Accounting Decision Makings (선형계획법을 이용한 관리회계적 의사결정)

  • Song, Han-Sik;Choi, Min-Cheol
    • Asia-Pacific Journal of Business
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    • v.9 no.4
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    • pp.99-117
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    • 2018
  • This study has investigated Linear Programming (LP) applications to special decision making problems in managerial accounting with the help of spreadsheet Solver tools. It uses scenario approaches to case examples having three products and three resources in make-and-supply business operations, which is applicable to cases having more variables and constraints. Integer Programmings (IP) are applied in order to model situations when products are better valued in integer values or logical constraints are required. Three cases in one-time-only special order decisions include Goal Programming approach, Knapsack problems with 0/1 selections, and fixed-charge 0/1 integer modelling techniques for set-up operation costs. For the decisions in outsourcing problems, opportunity-costs of resources expressed by shadow-prices are considered to determine their precise contributions. It has also shown that the improvement in work-shop operation for an unprofitable product must overcome its 'reduced cost' by the sum of direct manufacturing cost savings and its shadow-price contributions. This paper has demonstrated how various real situations of special decision problem in managerial accounting can be approached without mistakes by using LP's and IP's, and how students both in accounting and management science can acquire LP skills in their education.

A Study on the Marketing Management Strategy of Special Libraries in Korea (전문도서관 마케팅 경영전략)

  • Lee, Yong-Jae
    • Journal of Korean Library and Information Science Society
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    • v.38 no.3
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    • pp.335-351
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    • 2007
  • In the knowledge-based society of 21st century, special libraries face intense competitive environment. So they need to do 'library marketing' aimed at the organizations which they belong to and customers whom they serve for their survival and success. This study suggests the concept of 'library marketing', the cases of 'library marketing' at home and abroad, and concrete marketing management strategies for special libraries in Korea.

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The Literatual Study on the Special Points of MADANYANG (마단양천성십이혈(馬丹陽天星十二穴)에 대(對)한 문헌적(文獻的) 고찰(考察))

  • Park, Kyung-Mi;Moon, Jin-Young;Lim, Jong-Kook
    • The Journal of Dong Guk Oriental Medicine
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    • v.4
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    • pp.147-160
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    • 1995
  • The aim of this studies was to elucidate the derivation, meaning and use of the special points of MADANYANG. The results obtained were as follows : The remedial cases of special points of MADANYANG came within the category in that of literature cited. So, it was considerable that a method of selection of remedial points in MADANYANG was not creative but universal at that time. The special points of MADANYANG did not have a fixed organizing rule against it's medrian, visera and bowel in contrast to source points, connecting points, five element points etc. And it was only organized on the basis of remedial value.

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Analysis on the Library Management in Museum and Development Strategy toward Special Library (KSLA 연구논문 - 박물관내 도서관 운영 현황 및 전문도서관으로의 발전 전략)

  • Lee, Mi-Yeong
    • KSLA Bulletin
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    • s.2
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    • pp.28-42
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    • 2010
  • The lack of human resource, budget and understanding in organization didn't allow the library in museum to accomplish its function fully. I tried to find the development strategies toward special library in abroad cases. As a result, I suggested the librarian's role change from manager to collector, the expansion of the specialized collection, the function as institutional archives, the construction of networking between libraries.

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On Certain Integral Transforms Involving Hypergeometric Functions and Struve Function

  • Singhal, Vijay Kumar;Mukherjee, Rohit
    • Kyungpook Mathematical Journal
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    • v.56 no.4
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    • pp.1169-1177
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    • 2016
  • This paper is devoted to the study of Mellin, Laplace, Euler and Whittaker transforms involving Struve function, generalized Wright function and Fox's H-function. The main results are presented in the form of four theorems. On account of the general nature of the functions involved here in, the main results obtained here yield a large number of known and new results in terms of simpler functions as their special cases. For the sake of illustration some corollaries have been recorded here as special cases of our main findings.

ON NONLINEAR PROGRAMMING WITH SUPPORT FUNCTIONS

  • Husain, I.;Abha;Jabeen, Z.
    • Journal of applied mathematics & informatics
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    • v.10 no.1_2
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    • pp.83-99
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    • 2002
  • Optimality conditions are derived for a nonlinear program in which a support function appears in the objective as well as in each constraint function. Wolfe and Mond-Weir type duals to this program are presented and various duality results are established under suitable convexity and generalized convexity assumptions. Special cases that often occur in the literature are those in which a support function is the square root of a positive semi- definite quadratic form or an Lp norm. It is pointed out that these special cases can easily be generated from our results.

Special Cases on Two Machine Flow Shop Scheduling with Weighted WIP Costs

  • Yang, Jae-Hwan
    • Management Science and Financial Engineering
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    • v.15 no.2
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    • pp.69-100
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    • 2009
  • In this paper, we consider a relatively new two-machine flow shop scheduling problem where the unit time WIP cost increases as a job passes through various stages in the production process, and the objective is to minimize the total WIP (work-in-process) cost. Specifically, we study three special cases of the problem. First, we consider the problem where processing times on machine 1 are identical. Second, the problem with identical processing times on machine 2 is examined. The recognition version of the both problems is unary NP-complete (or NP-complete in strong sense). For each problem, we suggest two simple and intuitive heuristics and find the worst case bound on relative error. Third, we consider the problem where the processing time of a job on each machine is proportional to a base processing time. For this problem, we show that a known heuristic finds an optimal schedule.

A Case Study on the College Dropout Rates

  • Shin, Young-Ok
    • Journal of the Korea Society of Computer and Information
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    • v.23 no.5
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    • pp.65-72
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    • 2018
  • This study analyzes college dropout cases to reduce its rate. The analysis is preferentially carried out by figuring out our current situation of college dropout rate in pertinent cases and all around country's. Based on the current states, statistical analysis is accomplished as follows; analyzing the characteristic differences between the being in school's and the dropouts' by T-Test, determining the influence factor by logistic regression analysis and drawing the target group for special treatments through these statistical analysis. To reduce dropout rate, several measures could be adopted; focused counseling for each target group, special monitoring for students on leave of absence and opening major subjects for improving relationship between students and professors. The measures suggested by the analysis through this study are expected to lower the dropout rates effectively in college or specific fields including engineering science.

Estimation for Functions of Two Parameters in the Pareto Distribution (파레토분포(分布)에서 두 모수(母數)의 함수(函數) 추정(推定))

  • Woo, Jung-Soo;Kang, Suk-Bok
    • Journal of the Korean Data and Information Science Society
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    • v.1
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    • pp.67-76
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    • 1990
  • For a two-parameter Pareto distribution, the uniformly minimum variance unbiased estimateors(UMVUE) for the function of the two parameters are expressed in terms of confluent hypergeometric function. The variance of the UMVUE is also expressed in terms of hypergeometric function of several variables. UMVUE's for the ${\gamma}th$ moment about zero and several useful parametric functions, and their variances are obtained as special cases. The estimators of Baxter(1980) and Saksena and Johnson(1984) are special cases of our estimator.

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