Sandpile model on a quenched substrate generated by kinetic self-avoiding trails

Kinetic self-avoiding trails are introduced and used to generate a substrate of randomly quenched flow vectors. Sandpile model is studied on such a substrate with asymmetric toppling matrices where the precise balance between the net outflow of grains from a toppling site and the total inflow of grains to the same site when all its neighbors topple once is maintained at all sites. Within numerical accuracy this model behaves in the same way as the multiscaling BTW model.Comment: Four pages, five figure

Sandpile model on an optimized scale-free network on Euclidean space

Deterministic sandpile models are studied on a cost optimized Barab\'asi-Albert (BA) scale-free network whose nodes are the sites of a square lattice. For the optimized BA network, the sandpile model has the same critical behaviour as the BTW sandpile, whereas for the un-optimized BA network the critical behaviour is mean-field like.Comment: Five pages, four figure

Production Of Electronic Consumer Goods

All organizations, whether they are involved in the creation of goods or services, perform three functions that are necessary for the organization’s survival.  These three functions are finance/accounting, marketing, and production/operations.  This paper will focus on contributions that each of these three functions would make for a producer of electronic production/operations and on consumer goods.  An area that has become increasingly important to a company’s success is E-commerce.  The Internet has revolutionized how an organization can operate with regards to its interaction with customers and suppliers

Just-In-Time: Case Studies Of Supplier Relationships Across Industries

Just-in-time (JIT) is a well-established philosophy that seeks to sustain a competitive advantage and result in greater overall returns through waste elimination and variability reduction.  One component of the philosophy is the relationships with suppliers.  These relationships are vital to the success of organizations regardless of the industry.  The automotive, electronic, healthcare, and steel industries engage in JIT practices in differing fashions but all seek the same goal of sustaining a competitive advantage over the competition.  The automotive and electronic industries rely heavily on information sharing.  A critical component of the healthcare industry is seeking out long-term contracts with suppliers in order to assure quality and timeliness of deliveries.  The steel industry has elements of the JIT philosophy but has been forced to vertically integrate many of its productions due to the rising costs of raw materials.  Depending on the industry a firm competes in, and the relationship it has with its suppliers determines the manner in which it practices the JIT philosophy

Strategic Aspects Of The Importance Of Employee Management

According to the Herman Trend Alert, at least 30% of the nation’s workforce is unsatisfied with their current employment (Duecy, 2004; Grossman, 1999).  Employee management is based on ideas and procedures developed to increase worker motivation, productivity and performance. Successful employee management can contribute to not only increased product output but also product quality.  Companies rely on skilled managers to hire competent workers who will work productively and make profits for the company.  People have always been central to organizations, but today their strategic importance is growing in the knowledge-based business world like never before.  An organization’s success is becoming increasingly dependant on the knowledge, skills, and abilities of its employees.  Without these assets companies would surely fail.  How a business is managed and how they take care of their employees and customers, helps set the core competencies, which set an organization aside from its competitors.  It is important to align the company’s strengths and internal capabilities to that of the external market

The Effects of Emotional Intelligence on Communications and Relationships

Possession of interpersonal and intrapersonal competencies may explain why some managers are more successful than when their technical skills are not as superior or in fact may be at a lower level. It can also explain how some managers are able to develop better relationships and communicate more effectively with little effort or motivate others with relative ease. Emotional intelligence (EQ) is the ability to analyze and control your own emotions and behaviors to achieve a more positive interpersonal outcome at home and at work. EQ focuses on stress diffusion that eliminates emotional hijacking, personality profiling, self- esteem analysis and pro-active listening

Precise toppling balance, quenched disorder, and universality for sandpiles

A single sandpile model with quenched random toppling matrices captures the crucial features of different models of self-organized criticality. With symmetric matrices avalanche statistics falls in the multiscaling BTW universality class. In the asymmetric case the simple scaling of the Manna model is observed. The presence or absence of a precise toppling balance between the amount of sand released by a toppling site and the total quantity the same site receives when all its neighbors topple once determines the appropriate universality class.Comment: 5 Revtex pages, 4 figure

Actuator disc methods for open propellers: assessments of numerical methods

The paper describes the assessment of two different actuator disc models as applied to the flow around open propellers. The first method is based on a semi-analytical approach returning the solution for the nonlinear differential equation governing the axisymmetric, steady, inviscid and incompressible flow around an actuator disc. Despite its low computational cost, the method does not require simplifying assumptions regarding the shape of the slipstream, e.g. the wake contraction is not disregarded or prescribed in advance. Moreover, the presence of a tangential velocity in the wake as well as the spanwise variation of the load are taken into account. The second one is a commonly used procedure based on CFD techniques in which the effects of the propeller are synthetically described through a set of body forces distributed over the disc surface. Both methods avoid the difficulties and the computational costs associated with the resolution of the propeller blades geometrical details. The comparison is based on an in-depth error analysis of the two procedures which results in a set of reference data with controlled accuracy. An excellent agreement has been documented between the two methods while the computational complexity is obviously very different. Among other things the comparison is also aimed at verifying the accuracy of the semi-analytical approach at each point of the computational domain and at quantifying the effect of the errors embodied in the two methods on the quality of the solution, both in terms of global and local performance parameters. Furthermore, the paper provides a set of reference solutions with controlled accuracy that could be used for the verification of new and existing computational methods. Finally, the computational cost of the semi-analytical model is quantified, thus providing a valuable information to designers who need to select a cost effective and reliable analysis tool