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Search Results: 1 - 10 of 941 matches for " Theodore;Medellin "
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Virtual Assembly Rapid Prototyping of Near Net Shapes
Lim, Theodore;Medellin, Hugo;Sung, Raymond;Ritchie, James;Corney, Jonathan;
Ingeniería mecánica, tecnología y desarrollo , 2009,
Abstract: virtual reality (vr) provides another dimension to many engineering applications. its immersive and interactive nature allows an intuitive approach to study both cognitive activities and performance evaluation. market competitiveness means having products meet form, fit and function quickly. rapid prototyping and manufacturing (rp&m) technologies are increasingly being applied to produce functional prototypes and the direct manufacturing of small components. despite its flexibility, these systems have common drawbacks such as slow build rates, a limited number of build axes (typically one) and the need for post processing. this paper presents a virtual assembly rapid prototyping (varp) project which involves evaluating cognitive activities in assembly tasks based on the adoption of immersive virtual reality along with a novel non-layered rapid prototyping for near net shape (nns) manufacturing of components. it is envisaged that this integrated project will facilitate a better understanding of design for manufacture and assembly by utilising equivalent scale digital and physical prototyping in one rapid prototyping system. the state of the art of the varp project is also presented in this paper.
Virtual Assembly Rapid Prototyping of Near Net Shapes
Theodore Lim,Hugo Medellin,Raymond Sung,James Ritchie
Ingeniería mecánica, tecnología y desarrollo , 2009,
Abstract: La realidad virtual (por sus siglas en ingles VR) proporciona otra dimensión para muchas aplicaciones en ingeniería. Su naturaleza inmersiva e interactiva permite utilizar un método intuitivo para estudiar o analizar actividades cognitivas y evaluación del desempe o. La competitividad en el mercado significa lograr de manera rápida productos que cumplan las características de forma, dimensiones y funcionalidad deseadas. Las tecnologías de prototipado y manufactura rápida (por sus siglas en inglés, RP&M), están incrementando su uso en la producción de prototipos funcionales y la manufactura directa de componentes peque os. A pesar de su flexibilidad, estos sistemas tienen algunas desventajas o limitantes tales como la velocidad baja de producción, un número limitado de ejes o direcciones de construcción (típicamente uno) y la necesidad de un post-procesamiento después de su construcción. Este artículo presenta un proyecto denominado Virtual Assembly Rapid Prototyping (VARP) el cual involucra la evaluación de actividades cognitivas durante la realización de tareas de ensamble en un ambiente de realidad virtual y utilizando una técnica novedosa de prototipado rápido de forma casi final (near net shape, NNS) la cual no utiliza una descomposición en capas. Se contempla que este proyecto integral facilitará el entendimiento del dise o para manufactura y ensamble mediante la integración del prototipado virtual y el prototipado físico en un solo sistema de prototipado rápido. El estado del arte del proyecto VARP también se presenta en este artículo.
Maritime Boundaries Delimitation and Dispute Resolution in Africa  [PDF]
Theodore Okonkwo
Beijing Law Review (BLR) , 2017, DOI: 10.4236/blr.2017.81005
Abstract: Africa’s borders are bestride with many challenges ranging from religious and terrorist movements to cattle rustling, military conflicts to human trafficking. The challenges are endless, but whether the boundary disputes are terrestrial or maritime, they are mostly about security and prestige. Growing human population, political awareness and environmental challenges mean that the problems are likely to heighten, unless they are resolved. Despite the provisions of UNCLOS, Africa has several unresolved maritime boundary disputes. In this light, this article aims to examine the African situation, and discuss the challenges involved in the delimitation and management of maritime boundaries in Africa. This article presents the issues, causes, essence and the security imperative of maritime boundary disputes in Africa.
Adjudicating International Environmental Law Litigation: Recent Development of Case Law  [PDF]
Theodore Okonkwo
Beijing Law Review (BLR) , 2017, DOI: 10.4236/blr.2017.83014
Abstract: This article revolves around distinct dimensions related to the international environmental legal framework. In the recent years, there have been various developments in the field of international environmental law. Some of the inter-state disputes have raised concern towards resolving environmental issues. There are three well-known cases properly discussed in this article, i.e. Indus Waters Kishenganga, South China Sea and Pulp Mills case. In all of these three cases, a new jurisdiction has been proclaimed giving a new side to the international environmental litigation. For instance, ICJ’s judgement introduced the need for inclusion of EIA in the Pulp Mills case. On the contrary, the Partial Award in the case of Indus Waters Kishenganga, extended rights of India over Indus River but restricted the State from conducting extensive operations. The South China Sea case prohibited China from exercising historic rights over resources which belong to the nine dash line.
The Nature of Roles on Health and Well-Being of Older Adults in Congregant Living  [PDF]
Theodore Alter
Open Journal of Social Sciences (JSS) , 2017, DOI: 10.4236/jss.2017.59003
Abstract: This study examined the functional and psychological abilities of newly admitted female residents to several continuing care retirement communities (CCRC’s) in central New Jersey in an attempt to understand why some residents rapidly suffer functional and emotional decline, while others do not. The study supports previous findings that membership in roles promotes health and well-being, but the quantity of roles may be equal to or even less a factor than consistency of membership in even a single role. While membership in many roles has been proven to enhance the quality of life for older adults, member-ship in a single role may offer the same benefits.
Resonances in Lambda_c+ to p K- pi+
Z. Juan Medellin,Jurgen Engelfried,Antonio Morelos
Physics , 2002, DOI: 10.1063/1.1489762
Abstract: We report very preliminary results of a Dalitz-plot analysis of Lambda_c+ in the decay to p K- pi+ with the helicity formalism. We used the data from the fixed target experiment SELEX (E781) in Fermilab. We report about branching-ratios of the resonant states involved, and a possible initial state polarization.
The Relationship between Stock Returns and Volatility in the Seventeen Largest International Stock Markets: A Semi-Parametric Approach  [PDF]
Dimitrios Dimitriou, Theodore Simos
Modern Economy (ME) , 2011, DOI: 10.4236/me.2011.21001
Abstract: We empirically investigate the relationship between expected stock returns and volatility in the twelve EMU countries as well as five major out of EMU international stock markets. The sample period starts from De-cember 1992 until December 2007 i.e. up to the recent financial crisis. Empirical results in the literature are mixed with regard to the sign and significance of the mean – variance tradeoff. Based on parametric GARCH in mean models we find a weak relationship between expected returns and volatility for most of the markets. However, using a flexible semi-parametric specification for the conditional variance, we unravel significant evidence of a negative relationship in almost all markets. Furthermore, we investigate a related issue, the asymmetric reaction of volatility to positive and negative shocks in stock returns confirming a negative asymmetry in almost all markets.
Switch to Devalued Drachma and Cost-Push Inflation: A Simple Input-Output Approach to the Greek Case  [PDF]
Apostolis Katsinos, Theodore Mariolis
Modern Economy (ME) , 2012, DOI: 10.4236/me.2012.32023
Abstract: This paper uses simple dynamic input-output price models to estimate the effects of a switch to devalued drachma on the cost-inflation rate in the Greek economy. The findings suggest that the inflationary “pressures” are not too high and, therefore, there is room for trade-balance improvement.
Technology as a Mode and Manifestation of Being: An Assessment of Its Applications  [PDF]
Theodore John Rivers
Advances in Historical Studies (AHS) , 2013, DOI: 10.4236/ahs.2013.23018
Abstract: The objective of this paper is to demonstrate how technology’s being is revealed through its applications, which is expressive by means of the mode and manifestation of its being. The designation of technology as a mode of being refers to its nature, and the designation of technology as a manifestation of being refers to its activity as proof of technology’s being. Both mode and manifestation indicate how the being of technology is applied. Although distinguishable as two aspects of technology, both mode and manifestation are essential to revealing the essence of technology and its interplay with the world. Since human culture has a technological underpinning, the applications of technology not only reveal its metaphysics, but also indicate its importance to human culture. In addition to technology’s underlying method, these applications also pertain to the artifacts (or objects) of invention, mathematics, the consciousness of time, writing, alphabetization, science, and society.
Technology and Being: A Discussion of Their Metaphysical Significance  [PDF]
Theodore John Rivers
Advances in Historical Studies (AHS) , 2015, DOI: 10.4236/ahs.2015.41005
Abstract: This paper discusses the relationship between various metaphysical ideas associated with technology and the concept of being, notably in reference to the becoming of being, which is a description for change. And change influences technology in many ways when expressed through the mode and manifestation of its being. As a mode of being, technology is the means or manner by which we do anything. Consequently, mode is an effect of action as well as a cause for other actions yet to occur. As a manifestation of being, technology becomes the predominant way in which humanity presents itself to the world. Since we have aligned our being with technology, and have even on many occasions sublimated ourselves to it, it may be argued that our relationship with technology is simply a revelation of our desire to be.
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