Acoustic displacement triangle based on the individual element test

A three node, displacement based, acoustic element is developed. In order to avoid spurious rotational modes, a higher order stiffness is introduced. The higher order stiffness is developed from an incompatible strain field which computes element volume changes under nodal rotational displacements fields. The higher order strain satisfies the IET requirements, non affecting convergence. The higher order stiffness is modulated, element by element, with a factor. Thus, the displacement based formulation is capable of placing the spurious rotational modes over the range of physical compressional modes that can be accurately captured by the mesh

Implementing cellular manufacturing methodologies to improve the performance of a manufacturing operation

Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division; in conjunction with the Leaders for Global Operations Program at MIT, 2011.Cataloged from PDF version of thesis.Includes bibliographical references (p. 62).Many traditional high-mix, low-volume manufacturing facilities utilize process villages, whereby similar operations are grouped together in an effort to gain efficiencies. While process villages can improve certain metrics and increase capacity utilization, many wastes can be created that outweigh most benefits. In many cases process villages operate with large batch sizes, which result in longer lead-times and increased inventories. A different approach, for an appropriate range of product mixes and volumes, is to form production cells for common products that group different processes together to form complete value streams. The manufacturing cells focus on completely finishing products before handing them off and result in reduced lead-times and inventories. This thesis presents a methodology for implementing such production cells in a manufacturing environment. The author spent six months at a leading aerospace company implementing cellular manufacturing principles in designing several production cells for a transmission component manufacturing department as part of a lean transformation effort. The cell design methodology implemented consisted of several key processes such as process flow design, material handling design, workplace organization, and staffing. The process flow design consisted of activities such as grouping products into families, designing value streams, and performing capacity analysis. Material handling design developed solutions for how products physically flow through the cell and managing work-in-process. Workplace organization focused on utilizing visual factory and 5S principles to ensure strong communication and information flow as well as first class equipment organization and housekeeping. Finally, workload analyses were performed to appropriately staff the cells to minimize costs and ensure efficient operations. Ultimately, the goal of any transformation effort is to reduce waste and add value, which would not be possible if the culture of the organization did not support the physical and operational design changes. Hence the final, and arguably most important piece of the transformation, which the author participated in, was engaging the workforce to drive the culture change.by Manuel Correa.S.M.M.B.A

Monterey County District Attorney’s: A Technology-Based Policy & Procedure Manual

The primary goal of this project is to provide future volunteers and interns with assistance and resources for assigned cases they may work on. The District Attorney’s office is a fast-paced and very detail-oriented office, this may feel overwhelming to some interns and volunteers, so this project will help ease this. Even though there is an orientation process, a discussion on the policy and procedures that must be followed, and conversations with a supervisor or mentor on responsibilities and duties, this will still be great for an understanding of the office. With this capstone project, the intern should feel more comfortable and independent if they ever need help on a task. This is not a replacement for questions or concerns they might have about how a task should be done

Mercado de trabajo y principio de igualdad

La necesidad de medidas efectivas para garantizar la igualdad de oportunidades en el mercado laboral es inobjetable. No obstante, hay que tener presente el importante papel reconocido a la libertad de empresa y, consecuentemente, la necesidad de ponderar los derechos e intereses en juego y buscar puntos de equilibrio entre ellos. Ello explica que la consecución de la igualdad se canalice jurídicamente a través de dos vías complementarias. Por un lado, mediante la adopción de medidas de acción positiva dirigidas a favorecer la posición en el mercado de trabajo de determinados colectivos especialmente vulnerables. Por otro lado, a través de mecanismos dirigidos a marcar con nitidez los límites en los que debe quedar circunscrito el principio de libertad de empresa en el ámbito de las relaciones laborales._______________________________The need of effective measures to guarantee the equality of opportunities on the lobour market cannot be objected. It, nevertheless, it is necessary to consider the importance of the role that gives it to the freedom of company and, consistently, the need to consider the rights and interests in game and to look for points of balance between them. This explains that the attainment of the equality should canalize juridically across two complementary routes. On the one hand, by means of the adoption of measures of positive action directed to favoring the position on the labor market of certain specially vulnerable groups. One the other hand, across mechanisms directed to marking with clarity the limits in which it must remain limited the principle of freedom of company in the area of the labour relations

A state-owned bank for small farmers in Chile, c.1926-1953

This article deals with the creation and operations of the first agricultural development bank ever created in Chile, the Caja de Crédito Agrario (CCA), founded in 1926, in operations until 1953. The main sources are the annual reports of CCA from 1933 to 1951. The main contributions are to show first that the CCA was instrumental to provide subsidized long-term capital to small farmers in Chile to promote agricultural production, but that also had a “social mission”. The CCA soon became a protagonist within the local financial market. Given the lack of knowledge about the modus operandi of development banks in Latin America, we provide the first account of the management and financial activities of the CCA. We show that the management structure of the firm, and in particular its strategy of decentralization, was key to explain its success. Likewise, the CCA managed successfully to raise increasing amounts of capital from other state institutions at low interest rates, thus being able to cover its increasing loan operations

Hidden nonlinear su(2|2) superunitary symmetry of N=2 superextended 1D Dirac delta potential problem

We show that the N=2 superextended 1D quantum Dirac delta potential problem is characterized by the hidden nonlinear $su(2|2)$ superunitary symmetry. The unexpected feature of this simple supersymmetric system is that it admits three different $\mathbb Z_2$-gradings, which produce a separation of 16 integrals of motion into three different sets of 8 bosonic and 8 fermionic operators. These three different graded sets of integrals generate two different nonlinear, deformed forms of $su(2|2)$, in which the Hamiltonian plays a role of a multiplicative central charge. On the ground state, the nonlinear superalgebra is reduced to the two distinct 2D Euclidean analogs of a superextended Poincar\'e algebra used earlier in the literature for investigation of spontaneous supersymmetry breaking. We indicate that the observed exotic supersymmetric structure with three different $\mathbb Z_2$-gradings can be useful for the search of hidden symmetries in some other quantum systems, in particular, related to the Lam\'e equation.Comment: 11 pages; comments and refs. added, version published in PL

Patience predicts cooperative synergy: the roles of ingroup bias and reciprocity

Patience—low delay discounting—has been shown to predict cooperative behavior in environments where cooperation conflicts with competitive aspirations. Indeed, impatience seems to be associated to a greater concern for the latter (i.e., for the individual’s relative standing). But what about intergroup-competition situations, where competitive sentiments against outgroups can trigger ingroup cooperation? We analyze the connection between delay discounting and performance in two problem-solving tasks with either individual or intergroup-competition incentives. We find a positive relationship between the mean patience of the members of a group (both when using long-term discounting and short-term discounting, also known as present bias) and the within-group cooperative synergy during intergroup competition. Further exploratory analyses based on a follow-up social preferences task suggest that, for long-term discounting, this result may be explained by patient (vs. impatient) individuals’ propensity to be initially cooperative and to subsequently treat group members based on reciprocal fairness instead of strict equality. For short-term discounting, or present bias, our exploratory analyses do not yield any significant result, meaning that we are unable to provide a social-preferences-based explanation to the higher synergy observed in groups with less present biased individuals