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21.
Stakeholder involvement is essential to the development of a total maximum daily load (TMDL) and its implementation plan. A tool, beyond a simulation model, is needed to support the decision making process that requires negotiation and compromise among stakeholders. The decision support system (DSS) described herein has a TMDL module to calculate various combinations of point and nonpoint loads that can meet the water quality criteria. Its Consensus module allows stakeholders to formulate, evaluate, modify, and vote for alternatives. The DSS displays bar charts for pollution loads from various subwatersheds and attributes the nonpoint loads to land uses. The water quality consequence of the pollution loads is output in maps, which shows sections meeting criteria in green and those not in red. The DSS requires a front end effort of site specific adaptation and model calibration. An Internet-based stakeholder process was developed to allow more concerned citizens to participate in management decisions. 相似文献
22.
The High Field Project at Dresden/Rossendorf: A Pulsed 100 T/10 ms Laboratory at an Infrared Free-Electron-Laser Facility 总被引:1,自引:0,他引:1
T. Herrmannsdörfer H. Krug F. Pobell S. Zherlitsyn H. Eschrig J. Freudenberger K. H. Müller L. Schultz 《Journal of Low Temperature Physics》2003,133(1-2):41-59
This article describes the project to build a pulsed magnetic field user laboratory at the Forschungszentrum Rossendorf near Dresden. Using a 50 MJ/24 kV capacitor bank, pulsed fields and rise times of 100 T/10 ms, 70 T/100 ms, and 60 T/1 s should be achieved. The laboratory will be built next to a free-electron-laser-facility for the middle and far infrared (5 to 150 µm, 2 ps, cw). We describe the work which has been performed until now to start the construction of the laboratory in 2003: coil concepts and computer simulations, materials development for the high field coils, and design of the capacitor bank modules. In addition, a pilot laboratory has been set up where fields up to 62 T/15 ms have been obtained with a 1 MJ/10 kV capacitor module. It is used to gain experience in the operation of such a facility and to test various parts of it. In this test laboratory special devices have been developed for measurements of magnetization and magnetoresistance, and have been successfully used to investigate various materials including semiconductors and Heavy Fermion compounds. In particular, metamagnetic transitions in intermetallic compounds and the irreversibility field of a high-T
c superconductor have been determined. Shubnikov–de Haas oscillations have been observed in the semimetallic compound CeBiPt. Resistance relaxation has been observed to start less than 1second after the field pulse. It could be shown for the first time that nuclear magnetic resonance (NMR) is detectable in pulsed fields. 相似文献
23.
S.A. Finnegan J.K. Pringle J.C. Schultz O.E.R. Heimdahl A.J. Lindfors 《International Journal of Impact Engineering》1993,14(1-4):241-254
A planar model of a rocket motor has been developed that allows reaction in a central bore perforated by a projectile to be viewed with high-speed photography. Earlier work with this model showed that a “bubble” of propellant debris forms in the air gap between energetic material layers (bore region) as a result of projectile penetration of one of the layers. Ignition of the bubble occurs upon impact with the second layer, followed by a reaction ranging from mild burning to delayed delonation, depending on the width of the air gap, properties of the energetic material, and degree of confinement. The present paper presents the results of experimental and hydrocode studies to characterize the latter (delayed detonation) reaction. Results show that reaction initiates in the frontal portion of the bubble wall through mechanical (impact) shock. It then propagates backward through the bubble wall towards the first layer which then detonates. Detonation of the second layer occurs sympathetically. The reaction is bounded by a lower velocity limit and confined within a range of air gaps that increases with impact velocity. The upper-air-gap limit roughly coincides with the maximum expansion distance for the bubble before breakup, while the lower limit represents the minimum (threshold) damage level for detonation. 相似文献
24.
JR Schultz LM Ellerby EB Gralla JS Valentine CF Clarke 《Canadian Metallurgical Quarterly》1996,35(21):6595-6603
Ubiquinone (Q) is an essential, lipid soluble, redox component of the mitochondrial respiratory chain. Much evidence suggests that ubiquinol (QH2) functions as an effective antioxidant in a number of membrane and biological systems by preventing peroxidative damage to lipids. It has been proposed that superoxide dismutase (SOD) may protect QH2 form autoxidation by acting either directly as a superoxide-semiquinone oxidoreductase or indirectly by scavenging superoxide. In this study, such an interaction between QH2 and SOD was tested by monitoring the fluorescence of cis-parinaric acid (cPN) incorporated phosphatidylcholine (PC) liposomes. Q6H2 was found to prevent both fluorescence decay and generation of lipid peroxides (LOOH) when peroxidation was initiated by the lipid-soluble azo initiator DAMP, dimethyl 2,2'-azobis (2-methylpropionate), while Q6 or SOD alone had no inhibitory effect. Addition of either SOD or catalase to Q6H2-containing liposomes had little effect on the rate of peroxidation even when incubated in 100% O2. Hence, the autoxidation of QH2 is a competing reaction that reduces the effectiveness of QH2 as an antioxidant and was not slowed by either SOD or catalase. The in vivo interaction of SOD and QH2 was also tested by employing yeast mutant strains harboring deletions in either CuZnSOD and/or MnSOD. The sod mutant yeast strains contained the same percent Q6H2 per cell as wild-type cells. These results indicate that the autoxidation of QH2 is independent of SOD. 相似文献
25.
It is sometimes forgotten that industry is an important customer of engineering education. Ignoring this relationship has produced graduates that often fail to meet the changing needs of industry in today's competitive environment. On the basis of feedback from our industrial customers, faculty from Mechanical Engineering and Manufacturing Engineering at Brigham Young University have jointly developed a new senior capstone design course entitled “Integrated Product and Process Design.” This new capstone course is centered on industrial design and manufacturing projects. These projects involve both product and process design activities. Multidisciplinary teams of students are taught a structured development approach to produce typical industrial deliverables. These deliverables include a functional specification, product and process design, prototype, and first production sample. This paper identifies changing industrial needs, describes how the course was designed to meet these needs, and presents results from the initial offerings of the course. 相似文献
26.
A Schultz 《Canadian Metallurgical Quarterly》1995,91(7):31-34
With change abounding in Canada's health care system, nurses must redefine their roles. One role is in health promotion, a field where nurses have created a unique identity for themselves. But before advocating, the concept must be fully understood. 相似文献
27.
The growing involvement of psychologists in the management of human services, particularly in the public sector, has not been reflected in the development of corresponding academic or practicum training focusing on issues of service delivery. This article gives an overview of the practitioner-manager role and develops a rationale for management-oriented training in doctoral programs. An introductory course is briefly noted, and a review of models, knowledge and skills, and training resources is provided. Also described are practitioner-manager trends, training alternatives, and competing demands of the graduate curriculum. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
28.
Several areas of current interest in the neuropsychology of epilepsy are briefly reviewed in this article. These include variables pertaining to seizures, seizure history, antiepileptic drugs, and methods of neuropsychological evaluation. It is apparent that epilepsy is a multifaceted area: Psychologists not only can be of great assistance to patients with this condition, but may also learn a great deal from this complex disorder. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
29.
Carl Bruch Stephanie Altman Mishkat Al-Moumin Jessica Troell Elana Roffman 《国际水资源开发杂志》2007,23(4):595-624
For millennia, countries in the Middle East and North Africa (MENA) region have developed laws, regulations and other rules to govern their scarce water. These laws have been updated in recent years. This review of the legal frameworks (including regulations, decrees and other rules) reveals both progress and gaps in managing water quality, water quantity and procedural aspects. Of note, while the general frameworks are usually in place, in many instances the necessary details are lacking to give effect to the goals. However, in some instances the legal frameworks governing water lack certain key principles or approaches. In order to effectively meet the growing demands on their water resources, MENA countries will need to further strengthen and develop their legal frameworks. 相似文献
30.
Schultz T. Black A.W. Vogel S. Woszczyna M. 《IEEE transactions on audio, speech, and language processing》2006,14(2):403-411
Speech translation research has made significant progress over the years with many high-visibility efforts showing that translation of spontaneously spoken speech from and to diverse languages is possible and applicable in a variety of domains. As language and domains continue to expand, practical concerns such as portability and reconfigurability of speech come into play: system maintenance becomes a key issue and data is never sufficient to cover the changing domains over varying languages. In this paper, we discuss strategies to overcome the limits of today's speech translation systems. In the first part, we describe our layered system architecture that allows for easy component integration, resource sharing across components, comparison of alternative approaches, and the migration toward hybrid desktop/PDA or stand-alone PDA systems. In the second part, we show how flexibility and reconfigurability is implemented by more radically relying on learning approaches and use our English-Thai two-way speech translation system as a concrete example. 相似文献