scholarly journals Dual Approach in the Application of Geometric Interpretation of Linear Programming on the Organisation of Goods Distribution

2021 ◽  
Vol 33 (6) ◽  
pp. 847-858
Author(s):  
Bogdan Marković ◽  
Milan Marković
Keyword(s):  
Linear Programming ◽  
Geometric Interpretation ◽  
Manufacturing Companies ◽  
Mathematical Aspect ◽  
Calculation Methods ◽  
Dual Approach ◽  
The Core ◽  
Primal And Dual ◽  
Core Activity ◽  
Research Studies

The topic of the paper is the application of dual approach in formulation and resolution of goods distribution tasks problems. The gap in previous goods distribution research is the absence of the methodologies and goods transportation calculation methods for manufacturing companies with not too large amount of goods distribution whereby goods distribution is not the core activity. The goal of this paper is to find a solution for transportation in such companies. In such cases it is not rational to procure a specific software for the improvement of goods transportation but rather apply the calculation presented in this paper. The aim of this paper from mathematical aspect is to show the convenience of switching from the basic geometric interpretation of linear programming applied on transportation tasks to dual approach for the companies with too many costs limitations per transport task but not enough available transportation means. Recent research studies that use dual approach in linear programming are generally not applied to transportation tasks although such approach is very convenient. The goal of the paper is also to resolve transportation tasks by both primal and dual approach in order to prove the correctness of the method.

Algorithm for Spatial Straightness Evaluation Using Theories of Linear Complex Chebyshev Approximation and Semi-infinite Linear Programming

2005 ◽  
Vol 128 (1) ◽  
pp. 167-174 ◽  
Author(s):  
LiMin Zhu ◽  
Ye Ding ◽  
Han Ding
Keyword(s):  
Linear Programming ◽  
Chebyshev Approximation ◽  
Approximation Problem ◽  
Linear Complex ◽  
Infinite Linear Programming ◽  
Minimum Zone ◽  
Effectiveness And Efficiency ◽  
Primal And Dual ◽  
Straightness Error ◽  
Infinite Linear

This paper presents a novel methodology for evaluating spatial straightness error based on the minimum zone criterion. Spatial straightness evaluation is formulated as a linear complex Chebyshev approximation problem, and then reformulated as a semi-infinite linear programming problem. Both models for the primal and dual programs are developed. An efficient simplex-based algorithm is employed to solve the dual linear program to yield the straightness value. Also a general algebraic criterion for checking the optimality of the solution is proposed. Numerical experiments are given to verify the effectiveness and efficiency of the presented algorithm.

scholarly journals Construction of a Scale for Investigating Pre-School Children’s Social Situations of Development: Focusing on Activities instead of Abilities

2020 ◽  
Vol 16 (2) ◽  
pp. 25-32 ◽  
Author(s):  
M. Hedegaard ◽  
N. Lyberth
Keyword(s):  
Preschool Children ◽  
Child Development ◽  
Day Care ◽  
Social Situation ◽  
Social Situations ◽  
Local Conditions ◽  
The Core ◽  
Independent Features ◽  
Core Activity ◽  
At Home

This paper discuss principles for the design of a tool to screen 3- and 5-year-old children’s social situation of development in Greenland. We describe this tool as radical-local, building it on a theory of child development that focuses on children´s activities as cultural, anchored in local conditions and traditions, where play is seen as the core activity for preschool children. In constructing Investigating children’s situation of development (Undersøgelse af børns udviklingssituation — UBUS 3 and UBUS 5) we have aimed at creating an instrument that can be used to evaluate children’s health, wellbeing and activities in their everyday settings of day-care and at home in Greenland. The assessment focus on interaction with care-persons and other children, not on children’s abilities as isolated and independent features. For preschool children these conditions and their participation in these conditions create the child’s social situation of development.

scholarly journals An Improved Decomposition Approach and its Computational Technique for Analyzing Primal-Dual Relationship in LP & LFP Problems

2014 ◽  
Vol 33 ◽  
pp. 65-75
Author(s):  
HK Das ◽  
M Babul Hasan
Keyword(s):  
Computational Technique ◽  
Dual Decomposition ◽  
Linear Fractional Programming ◽  
Decomposition Approach ◽  
Dual Approach ◽  
Numerical Examples ◽  
Primal Dual ◽  
Primal And Dual ◽  
Relationship Of ◽  
The Relationship

In this paper, we study the methodology of primal dual solutions in Linear Programming (LP) & Linear Fractional Programming (LFP) problems. A comparative study is also made on different duals of LP & LFP. We then develop an improved decomposition approach for showing the relationship of primal and dual approach of LP & LFP problems by giving algorithm. Numerical examples are given to demonstrate our method. A computer programming code is also developed for showing primal and dual decomposition approach of LP & LFP with proper instructions using AMPL. Finally, we have drawn a conclusion stating the privilege of our method of computation. GANIT J. Bangladesh Math. Soc. Vol. 33 (2013) 65-75 DOI: http://dx.doi.org/10.3329/ganit.v33i0.17660

scholarly journals Research on Supply Chain Integration under Service-oriented Logics and Joint Influence of Dual Innovation on Corporate Performance Path

2021 ◽  
Vol 13 ◽  
pp. 101-108
Author(s):  
Yunfan Yang ◽  
Luyao Han ◽  
Bohan Zhang ◽  
Xiong Yang
Keyword(s):  
Supply Chain ◽  
Internal Control ◽  
Manufacturing Industry ◽  
Corporate Performance ◽  
Rapid Development ◽  
River Delta ◽  
Supply Chain Integration ◽  
Manufacturing Companies ◽  
The Core ◽  
Service Oriented

The rapid development of economic globalization and the promotion of emerging technologies have spawned a Service-oriented logic that gradually dominates the contemporary industry, and the path for manufacturing companies to improve performance has become more and more complicated. Based on this background, the article uses the data of A-share listed companies in the manufacturing industry in the Yangtze River Delta and the Pearl River Delta in 2019, and uses the research method of fuzzy set qualitative comparative analysis to empirically study the core path and mechanism of multiple complex factors that affect corporate performance. The research results show that manufacturing companies can choose four paths to improve corporate performance (supply chain integration-driven based on internal control, servicing and market dual logic based on internal control-based integration-driven, relying on exploration and innovation-based integration-driven, Relying on the integration-driven type of dual innovation and balance), and found that the core role of supply chain integration and servicing level has become more prominent, becoming a key factor leading to high corporate performance. This research is helpful to identify the influence mechanism of supply chain integration, service level and other factors on corporate performance, and grasp the core of configuration, which has certain reference significance for corporate managers.

scholarly journals Lean Companies Employed Assembly Workers Train with New Approches

2021 ◽  
Vol 12 (5) ◽  
pp. 574-579
Author(s):  
Somesh Dhamija
Keyword(s):  
Lean Manufacturing ◽  
Implementation Process ◽  
Shop Floor ◽  
Manufacturing Companies ◽  
Complex Activity ◽  
The Core ◽  
Production Processes ◽  
Effective Training ◽  
Manufacturing Activity ◽  
Definition Of

LM has proven itself the production system that enhances shop floor efficiency. Furthermore, the current environment for production firms is accelerating the pace at which LM is implemented. The manufacture of lean is not easy to introduce. It is constant and complex activity. Assembly workers in production processes are the core of lean manufacturing activity. Training is known as vehicle to aid the implementation process. While the importance of training is known so far, there are only a few options for organizing effective training. The results of the survey of questions conducted inside UK manufacturing companies are examined. This article illustrates the definition of lean production and worker requirements in lean environment.

Innovation mediating relationship between TQM and performance: cases of industrial certified companies

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Meriem Khalfallah ◽  
Anis Ben Salem ◽  
Hajer Zorgati ◽  
Lassaad Lakhal
Keyword(s):  
Financial Performance ◽  
Product Innovation ◽  
Process Innovation ◽  
Reciprocal Relationship ◽  
Mediating Effect ◽  
Operational Performance ◽  
Equation Modeling ◽  
Manufacturing Companies ◽  
Content Type ◽  
Research Studies

PurposeThe purpose of this research is to analyze the reciprocal relation between total quality management (TQM) and innovation (product innovation and process innovation) and their impact on operational and financial performance.Design/methodology/approachThe data were obtained from a survey of 205 manufacturing companies. Structural equation modeling (SEM) was performed to evaluate the research model.FindingsThe results reveal that there is a reciprocal relationship between TQM and innovation. Moreover, the findings indicate a significant positive effect of product innovation and process innovation on operational performance and insignificant direct impact of TQM on operational performance. However, this effect is significant when it is mediated through product innovation and process innovation.Research limitations/implicationsThis paper helps practitioners to understand how TQM practices support both product and process innovation and the role of the latter in promoting the implementation of TQM practices and ensuring operational performance.Originality/valueThis study presents an innovative approach since it is among the first research studies that provide empirical evidence to a reciprocal association between TQM and innovation. Additionally, this paper examines the dimensions studied in different aspects. It considered financial performance and operational performance, and with respect to innovation, this dimension was analyzed through two different perspectives, namely product innovation and process innovation. This study is also among the first and few research studies that have studied the mediating effect of innovation.

ICT and Imagination

2014 ◽  
pp. 198-215
Keyword(s):  
Design Education ◽  
Visual Images ◽  
Western Civilization ◽  
Philosophy Of Art ◽  
Formal Representation ◽  
Ancient Athens ◽  
The Core ◽  
Mental Power ◽  
European Renaissance ◽  
Core Activity

At the end a recurring question remains: What good are ICTs to design education and practice? To answer that, it is necessary to focus on imagination and the production of visual images as the core activity of design. What is imagination? And can ICTs “think” imaginatively and see visions? No, they cannot. Imagination is a concept with a long and shifting course of progression through Western civilization. In ancient Athens both Plato and Aristotle regarded imagination as mimesis or imitation of nature. For neither of these philosophers does imagination directly apprehend reality – only reason, they argued, can do that. But for Aristotle, imagination is necessary to intelligent thinking because imagination links sensation to reason, even more than memory, which can only look backward in time, is capable of doing. For Aristotle, imagination is a formal representation of both sensation and reason, and it is therefore an important mental power. The Classical conceptualization of imagination as imitation or “holding a mirror up to nature” dominated the philosophy of art until the European Renaissance in the 15th and 16th centuries. Then in the Romantic Age of the late 18th and early 19th centuries a new conceptualization of imagination claimed that imagination is not so much a mirror as a light that can actually apprehend and illuminate ultimate reality. The poet’s mind, the great Romantics believed, creates images of truth and beauty and goodness. Moreover, the modern philosopher Nietzsche in the late 19th century claimed that not only does imagination create visions of reality but it actually creates reality itself.

Volunteering at Landsmót: gaining knowledge and experience.

2021 ◽  
pp. 99-112
Author(s):  
Kari Jæger ◽  
Guðrún Helgadóttir
Keyword(s):  
Volunteer Management ◽  
Non Profit ◽  
The Core ◽  
Icelandic Horse ◽  
Nature And Culture ◽  
The World ◽  
Management Approaches ◽  
International Volunteer ◽  
Core Activity

Abstract Landsmót (the National Championship of the Icelandic horse), the main equestrian event in Iceland, provides an opportunity to present Icelandic nature and culture in many ways, through horses, clothing, equipment and food. Landsmót is a biennial sports event which has become a meeting place for local and national participants (audience and volunteers) and also international audiences and volunteer tourists. It provides access to what is commonly termed 'the world of the Icelandic horse'. The findings in this chapter are based on interviews with volunteers and fieldwork at the Landsmót event at Hólar, Iceland, in 2016. There were two types of volunteers at the event: volunteer tourists who signed up due to their interest in the core activity; and members of local non-profit associations that took on tasks for the event as a fundraising activity. The findings suggest that these two groups require different volunteer management approaches and that a clearer strategy for managing international volunteer tourists is needed to meet their needs and expectations of the event community and to facilitate their co-creation of memorable experiences.

Solving Hardy-Weinberg with Geometry: An Integration of Biology and Math

2017 ◽  
Vol 79 (4) ◽  
pp. 309-312
Author(s):  
Laura A. Schoenle ◽  
Matthew Thomas
Keyword(s):  
Scientific Theory ◽  
Geometric Interpretation ◽  
Student Understanding ◽  
Weinberg Equilibrium ◽  
The Core ◽  
Distributive Property ◽  
Genotype Frequencies ◽  
Hardy Weinberg Equilibrium ◽  
Using Data ◽  
And Mathematics

Introducing Hardy-Weinberg equilibrium into the high school or college classroom can be difficult because many students struggle with the mathematical formalism of the Hardy-Weinberg equations. Despite the potential difficulties, incorporating Hardy-Weinberg into the curriculum can provide students with the opportunity to investigate a scientific theory using data and integrate across the disciplines of biology and mathematics. We present a geometric way to interpret and visualize Hardy-Weinberg equilibrium, allowing students to focus on the core ideas without algebraic baggage. We also introduce interactive applets that draw on the distributive property of mathematics to allow students to experiment in real time. With the applets, students can observe the effects of changing allele frequencies on genotype frequencies in a population at Hardy-Weinberg equilibrium. Anecdotally, we found use of the geometric interpretation led to deeper student understanding of the concepts and improved the students' ability to solve Hardy-Weinberg-related problems. Students can use the ideas and tools provided here to draw connections between the biology and mathematics, as well as between algebra and geometry.

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