Nowadays, the design of waste treatment needs to be environmentally- friendly. Due to the fact that the concern of global warming is getting critical, the reuse of waste treatment can be beneficial in reducing carbon ...
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Positronium (Ps) is shown to exist in a delocalized state in self-assembled metalorganic crystals that have large 1.3–1.5 nm cell sizes. Belonging to a class of materials with record high accessible specific surface ...
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Positronium (Ps) is shown to exist in a delocalized state in self-assembled metalorganic crystals that have large 1.3–1.5 nm cell sizes. Belonging to a class of materials with record high accessible specific surface areas, these highly porous crystals are the first to allow direct probing with simple annihilation lifetime techniques of the transport properties of long-lived triplet Ps in what is hypothesized to be a Bloch state. Delocalized Ps has unprecedented (high) Ps mobility driven primarily by weak phonon scattering with unusual and profound consequences on how Ps probes the lattice.
Due to the complexity of contemporary practice, top-tier structural engineering firms hold the master's degree as the minimum level of education for new hires. In addition, the American Society of Civil Engineers ...
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ISBN:
(纸本)9780878232413
Due to the complexity of contemporary practice, top-tier structural engineering firms hold the master's degree as the minimum level of education for new hires. In addition, the American Society of Civil Engineers (ASCE) recommends a master's degree or the equivalent of 30 credits beyond a bachelor's degree as part of the minimum body of knowledge for licensed professional engineers. Finally, students whose end goal is a career in professional practice have indicated a preference for graduate programs focused on design knowledge essential for the advancement of structural engineering practice. These needs provided the opportunity for the creation of a new professional master's program in structural engineering at Lehigh University. Launched in summer 2008, the program is led by a full-time professor of practice with industry design experience and guided by an executive advisory board, composed of representatives from all areas of the building design and construction profession. The hallmark of the 30-credit, 10-month program is a 9-credit, 3-course design project sequence in which student teams design a real-world structure from initial concept to final construction documents. An individual project assignment, as well as technical elective courses, allows students to tailor the program to their unique interests and career goals. A laboratory class provides hands-on learning of structural behavior. Interaction with industry leaders through seminars, field trips, and externships provides students ample opportunity to network with professionals and gain an understanding of their chosen industry. Assessments were conducted to determine the viability of the proposed program with respect to industry and students. engineering firms were surveyed to provide feedback on the proposed program elements as well as to gage the potential job market for graduates. Undergraduate students were surveyed to determine interest in the program and to gather student feedback on key program
作者：
Ahrens, Cory D.Colorado School of Mines
Department of Applied Mathematics and Statistics Program in Nuclear Science and Engineering Golden CO 80401-1887 United States
The Sn equations have been the workhorse of deterministic radiation transport calculations for many years. Here we derive two new angular discretizations of the 3D transport equation. The first set of equations, deriv...
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ISBN:
(纸本)9781622763894
The Sn equations have been the workhorse of deterministic radiation transport calculations for many years. Here we derive two new angular discretizations of the 3D transport equation. The first set of equations, derived using Lagrange interpolation and collocation, retains the classical Sn structure, with the main difference being how the scattering source is calculated. Because of the formal similarity with the classical S n equations, it should be possible to modify existing computer codes to take advantage of the new formulation. In addition, the new S n-like equations correctly capture delta function scattering. The second set of equations, derived using a Galerkin technique, does not retain the classical Sn structure because the streaming term is not diagonal. However, these equations can be cast into a form similar to existing methods developed to reduce ray effects. Numerical investigation of both sets of equations is under way.
In novel learning environments, learning systems not only are able to get environmental information through sensing technology to provide adaptive learning resources and information to students, but also help students...
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The mushroom bag is a polypropylene bag stuffed with wood flour and bacterial nutrients. After being used for growing mushroom for one to two weeks this bag becomes mushroom cultivation waste (MCW). About 150 million ...
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Landfill (TPA) Sukawinatan Palembang is an open dumping system which covers an area of 25 hectares. This system may bring an environmental damage to the surrounding area because it does not provide leachate treatment....
Landfill (TPA) Sukawinatan Palembang is an open dumping system which covers an area of 25 hectares. This system may bring an environmental damage to the surrounding area because it does not provide leachate treatment. Leachate is the landfill waste that dissolves many compounds that contain pollutants from both organic substances and heavy metal origin. This paper presents the results of laboratory analysis on samples of leachate as well as shallow groundwater from the surrounding area. The results were compared to established quality standards to evaluate whether the leachate has influenced the quality of the shallow groundwater in the surrounding area. The results show that there are some indications that the quality of groundwater has been polluted by the leachate of both organic substances and heavy metals produced by the Sukawinatan landfill.
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