Thematische Bibliographien / Area solved

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Auswahl der wissenschaftlichen Literatur zum Thema „Area solved“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 15. Februar 2022

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Zeitschriftenartikel zum Thema "Area solved"

Bosák, Lukáš, und Milan Palko. „Energy Saving Building in Mountain Area“. Advanced Materials Research 1057 (Oktober 2014): 27–34. http://dx.doi.org/10.4028/www.scientific.net/amr.1057.27.

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The main intention of this report is solution of energy-saving building in mountain area, which uses the resources of the natural environment. It is the building of the mountain hotel in this concrete case. Firstly, there is solved the energy concept of the building which uses natural resources. There is also described the design of a building, which is designed in an overwhelming majority as a wooden building. The constructions are handled with an aspect of their thermal properties. There has been solved the thermal analysis of the major structural compositions. The connections between compositions of layers can be seen in the construction details. Those connections form together a single thermal insulated coverage of the building. There has been also solved 2D thermal analysis of the temperatures for the opening structures, especially windows. The windows are considered in two positions of mounting.

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Rymarczyk, Tomasz, und Przemysław Adamkiewicz. „NONDESTRUCTIVE METHOD TO DETERMINE MOISTURE AREA IN HISTORICAL BUILDING“. Informatics Control Measurement in Economy and Environment Protection 7, Nr. 1 (30.03.2017): 68–71. http://dx.doi.org/10.5604/01.3001.0010.4586.

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This paper presents a nondestructive method of brick wall dampness testing in real building structures. The proposed algorithm was used to determine the moisture of test brick walls on the specially models. The finite element method has been used to solve the forward problem. The algorithm is initialized by using one step methods and topological sensitivity analysis. There was constructed the forward model and solved the inverse for visualization of moisture inside objects.

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Di, Li Ming, Chun Jing Yang und Yong Sheng Zhao. „Mathematical Model for Closed-Form Solution of Parameters of Cylinder Exhaust Port in Variable-Stroke Engine“. Advanced Materials Research 97-101 (März 2010): 2724–27. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.2724.

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A mathematical model for getting the closed-form solution of main parameters of cylinder exhaust port is present, based on a few known parameters of variable-stroke engine (VSE). Considering lack of parameters in the initial stage of design, empirical formula is applied to solve the initial specific time-area value of exhaust port, and the initial port timing angle is solved by using logarithmic alignment method, thereby height and width of the exhaust port can be solved, then the precise specific time-area value and port timing angle are solved by using the coefficient calculation method and logarithmic alignment method respectively, so that the relative errors between initial and precise values of specific time-area value and port timing angle are defined as the relative errors of the mathematical model. Application examples show that the relative errors of the model is less than 3%.

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Hicks, James E., und Mounir M. Abdel-Aal. „Maximum Likelihood Estimation for Combined Travel Choice Model Parameters“. Transportation Research Record: Journal of the Transportation Research Board 1645, Nr. 1 (Januar 1998): 160–69. http://dx.doi.org/10.3141/1645-20.

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Equilibrium models of combined location and travel choices solve for the modal link flow pattern, which simultaneously solves a constrained minimization problem and satisfies a set of equilibrium conditions characterizing a rational behavior for traveler choices in an urban transportation system. The minimization problem typically is made to be representative of the particular urban area being studied by including coefficients of travel costs and travel choices that have been estimated from locally available observed data. For large urban areas, in practice, it is possible to derive interzonal travel times and costs only from the travel model, because suitable observed data are nonexistent. In this case, the estimation problem is a function of the travel model variables and, at the same time, the travel model is a function of the parameters determined by the estimation problem. Procedures to computationally search for a stable solution to this bilevel optimization problem have been addressed with limited success. The parameter estimation is solved in an iterative procedure in which first parameters are held fixed and the travel model is solved, then travel patterns are held fixed and the maximum likelihood parameters are solved by the Newton-Raphson method. Each successive parameter estimation resulting from these two steps results in a new set of parameter values for the next iteration until stable values for the parameters are achieved. The quality of the convergence of the parameter estimates is reported.

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Zemanek, Holger. „COMPETITIVENESS WITHIN THE EURO AREA: THE PROBLEM THAT STILL NEEDS TO BE SOLVED“. Economic Affairs 30, Nr. 3 (Oktober 2010): 42–47. http://dx.doi.org/10.1111/j.1468-0270.2010.02020.x.

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Narasimhan, Harikrishna, und Shivani Agarwal. „Support Vector Algorithms for Optimizing the Partial Area under the ROC Curve“. Neural Computation 29, Nr. 7 (Juli 2017): 1919–63. http://dx.doi.org/10.1162/neco_a_00972.

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The area under the ROC curve (AUC) is a widely used performance measure in machine learning. Increasingly, however, in several applications, ranging from ranking to biometric screening to medicine, performance is measured not in terms of the full area under the ROC curve but in terms of the partial area under the ROC curve between two false-positive rates. In this letter, we develop support vector algorithms for directly optimizing the partial AUC between any two false-positive rates. Our methods are based on minimizing a suitable proxy or surrogate objective for the partial AUC error. In the case of the full AUC, one can readily construct and optimize convex surrogates by expressing the performance measure as a summation of pairwise terms. The partial AUC, on the other hand, does not admit such a simple decomposable structure, making it more challenging to design and optimize (tight) convex surrogates for this measure. Our approach builds on the structural SVM framework of Joachims ( 2005 ) to design convex surrogates for partial AUC and solves the resulting optimization problem using a cutting plane solver. Unlike the full AUC, where the combinatorial optimization needed in each iteration of the cutting plane solver can be decomposed and solved efficiently, the corresponding problem for the partial AUC is harder to decompose. One of our main contributions is a polynomial time algorithm for solving the combinatorial optimization problem associated with partial AUC. We also develop an approach for optimizing a tighter nonconvex hinge loss–based surrogate for the partial AUC using difference-of-convex programming. Our experiments on a variety of real-world and benchmark tasks confirm the efficacy of the proposed methods.

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Lobaty, A. A., Y. F. Yatsyna, V. Y. Stepanov und A. Y. Bumai. „Probabilistic analysis of getting into in restricted area by unmanned aerial vehical“. «System analysis and applied information science», Nr. 4 (30.12.2019): 46–54. http://dx.doi.org/10.21122/2309-4923-2019-4-46-54.

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The probabilistic analysis of crossing by an unmanned aerial vehicle (UAV) of the boundary of the no-fly area is solved. Condition of stating of the fact of the violation of the boundary of the restricted area is to stand of UAV within the area during a specified time. The substantiation of the mathematical model to research through linearized vector stochastic equation is carried out. The problem is solved by applying the theory of Markov processes of random structure with absorption of realizations at the boundary of a given area. Particularity of the approach is the contemporaneously consideration of two probability densities of the distribution of phase coordinates that describe the boundary conditions. In this case, two equations systems are solved for probabilistic moments: taking into account the absorption of realizations and without taking into account the absorption. The probability of an object gets into specified area and do not leave one during the time that necessary to notice the unmanned aerial vehicle at the restricted area.

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KRAMAR FIJAVŽ, MARJETA, MITJA LAKNER und MARJETA ŠKAPIN RUGELJ. „AN EQUAL-AREA METHOD FOR SCALAR CONSERVATION LAWS“. ANZIAM Journal 53, Nr. 2 (Oktober 2011): 156–70. http://dx.doi.org/10.1017/s1446181112000065.

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AbstractWe study the one-dimensional conservation law. We use a characteristic surface to define a class of functions, within which the integral version of the conservation law is solved in a simple and direct way. A simple algorithm for computing the unique solution is developed. The method uses the equal-area principle and yields the solution for any given time directly.

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Ma, Dian Guang, Xin Liu, Jia Qiang Zhao, Xiao Fei Liu und Shao Xi Li. „The Research of Navigation Flow Conditions and Improvement Measures on Entrance Area and Connecting Reach of Dahua Lock in Hongshui River“. Advanced Materials Research 250-253 (Mai 2011): 3624–29. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.3624.

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The ship facilities didn’t be constructed in step with the construction of Dahua Terminal in Hongshui River of Guangxi province, while the argumentation didn’t be carried out when navigation lock was built out. In the condition above, when the navigation lock was completed, the navigation flow conditions in the entrance area of downstream and the linkage section was bad, so ships were difficult to enter the approach channel. The research of navigation flow conditions and nay navigation mechanism in the entrance area of downstream and the linkage section in current condition was implemented through physical model combining ship model. The method of using traditional navigation wall and navigation pier to improve flow conditions didn’t be adopted in renovation research. The new renovation idea of changing inflow conditions was used innovatively and bad flow pattern problem was solved by using deep pools terrain in the entrance area of downstream. After the implementation of the engineering, nay navigation problem was solved effectively and ships could pass the terminal successfully. This engineering provides a new way to solve similar terminal navigation problem.

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Wang, Shuaian, Ran Yan, Lingxiao Wu und Dong Yang. „Optimal re-allocation of mooring areas for yachts“. Maritime Business Review 4, Nr. 1 (18.03.2019): 94–105. http://dx.doi.org/10.1108/mabr-11-2018-0045.

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Purpose The purpose of this study is to propose a mathematical optimization model to solve the yacht mooring area re-allocation problem (YMARP). The objective of the problem is to allow the maximum number of yachts to be moored at their ideal mooring areas. Design/methodology/approach In this paper, the YMARP is introduced, formally defined and discussed. The authors develop a 0-1 integer programing optimization model for the problem, which can be solved efficiently using off-shelf solvers. The performance of the model is tested on extensive numerical experiments. Findings The results of the numerical experiments demonstrate that the proposed model can solve the YMARP very efficiently using off-shelf solvers like CPLEX. In particular, problems with up to 30,000 yachts and 400 mooring areas can be solved to optimum within 30 s. Originality/value This study is one of the preliminary studies to consider problems arising in yacht management in a quantitative manner. The proposed model has three main merits. First, it enables the government to better manage yachts and mooring areas. Second, with more yacht owners assigned with ideal mooring areas, the model helps reduce the traveling time of the yacht owners to yacht mooring areas. Third, by reducing the traveling time of the yacht owners, the model contributes to lessening the traffic burden in cities.

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Dissertationen zum Thema "Area solved"

Průšková, Kristýna. „Návrh sídelní struktury soudobého města v historickém prostředí“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2020. http://www.nusl.cz/ntk/nusl-414280.

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The assignment for this thesis was to prepare an architectural plan for barracks in Černé Pole in Brno. As part of the assignment, I attempted to rejuvenate and open up the given territory to the town and to its people and to connect it to the surrounding structures. I expanded the territory in question with adjacent panel construction from the north, as one of the objectives was to gradually incorporate this development in a way so that it does not create a barrier. The second objective was to revive two historical barracks buildings and a panel building dormitory, which serve as a reference for the image of the place. The thesis is split into two parts - analysis and proposal. In the proposal I discuss specific materials, transportation and public spaces. Most of the territory is made up of residential spaces with civil and commercial spaces, which together make the entire area functional. In my proposal I try to show how the entire territory can be solved, with the involvement of the historic and panel buildings, and not just building on an empty brownfield.

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Haraštová, Nela. „Řešení brownfields v rámci České republiky - Tepna Náchod“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-399920.

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The assignment of diploma thesis was processed the area of the textile factory in Náchod – named Tepna. As part of this work I tried to suggest a live continuation of the historical core of city Náchod and connect the new district to the Plhov housing estate. As a goal I have set revitalization of building Bílá Tepna whitch is actually abandoned. Bíla Tepna is the last standing object from original development and it indicates the indentity of the place. In one part of territory I put a new block bulding with mostly residential function. This area surrounds the main square and object Bíla Tepna. The second part of area consists of terraced family houses with children’s playground. By my suggestion I wainted residents to show how it is possible design the development if object Bílá Tepna will be preserved.

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Kim, Chunho. „Fundamentals of area array solder interconnect yield“. Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/16479.

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Bušinová, Eva. „Návrh udržitelné městské struktury - na bázi středověkého města - pro 21.století“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2021. http://www.nusl.cz/ntk/nusl-443680.

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The thesis deals with the design of a sustainable urban structure, based on a medieval city, in the 21st century. The main idea of the proposal is the creation of a new part of the town Náměšť nad Oslavou with the aim of connecting it with the existing urban structure and at the same time extending it to the missing elements of the developing city. The newly built area is designed with an emphasis on the construction of new residential housing with civil facilities services, while designing and creating public spaces and private parts of courtyards and villas. The aim of the thesis was to design a growing territory so that it adapts to the needs of today's society and at the same time became part of the existing city. From an urban point of view, based on the theme of the thesis, the aim is to combine elements of a medieval city with elements of a city built in the 21st century. The concept is based on a planned network of streets with multifunctional buildings designed for trade and production in the ground floor and housing on other floors, which originated in the medieval city. The emblem of the medieval city was the emotional perception of the connection of strict lines and strange shapes into one whole, and therefore buildings were designed in a new part of the city for living with almost clean geometric lines, while the objects of civil facilities are organic shapes.

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Stinson-Bagby, Kelly Lucile. „Microstructural Evolution in Thermally Cycled Large-Area Lead and Lead-Free Solder Joints“. Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/34573.

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Currently, there are two major driving forces for considering alternative materials to lead- based products, specifically interconnections, in electronics applications, including the impending legislation or regulations which may tax, restrict, or eliminate the use of lead and the trend toward advanced interconnection technology, which may challenge the limits of present soldering technology. The reliability of solder joints is a concern because fracture failures in solder joints accounts for 70% of failures in electronic components. Lead-free solders are being investigated as replacements for lead solders currently used in electronics. Thermo-mechanical properties describe the stresses accumulated due to thermal fatigue as a result of CTE mismatch within the system. By understanding the failure mechanisms related to lead-free solders, the application of lead- free solders could be more strategically designed for specific applications. The objective of this thesis is to observe microstructural change in large-area solder joints caused by thermal cycling and relate these changes to reliability issues in large-area lead and lead-free solder constructed semiconductor power devices. This study focused on the microstructural changes within the solder alloy of a large-area solder joint under thermal cycling conditions. Two major primary observations were made from this research, they are: 1) due to a combination of testing conditions and material properties, the lead-free solders, Sn/3.5Ag and Sn/Ag/0.7Cu, sustained the most severe damage as compared to Sn/37Pb, and 2) due to elevated stresses at the solder/substrate interface in a simulated power semiconductor device sample damage was found to be most severe.
Master of Science

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Jiang, Li. „Thermo-Mechanical Reliability of Sintered-Silver Joint versus Lead-Free Solder for Attaching Large-Area Devices“. Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/36429.

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This study mainly evaluated the thermo-mechanical reliability of lead-free packaging techniques for attaching large-area chip. With 3 MPa pressure, a low-temperature (<300oC) sintering technique enabled by a nano-scale silver paste was developed for attaching 100 mm2 silicon die. This new lead-free packaging technique for die-attachment was compared with soldering by vacuum reflow. Lead-free solder SAC305 and SN100C were selected and used in this work since they were widely used in electronic packaging industry. Inspection of as-prepared die-attachments by X-ray and optical microscopy (observation of cross-section) showed that the voids percentage in solder joint was less than 5% and no voids was observed at the scale of hundreds of micron in sintered silver joint. Then these die-attachment were thermal cycled with the temperature range from -40oC to 125oC. Deduction of curvature and residual stresses were found for both soldered and sintered die-attachment. After 800 cycles, the residual stresses in silicon-solder-copper sample already decreased to around 0. The SEM images of solder and silver joint after 800 thermal cycles showed that cracks longer than 2.5 mm already grew in both kinds of solder joint (die-attachment of Si-Solder-Copper). In contrast, no cracks or voids at the scale of hundreds of micron were defected in silver joint. Based on these observation, different mode of stress-relaxation were proposed for sintered silver and solder, respectively. While solder joint released stresses by crack growth, the silver joint relied on the deformation of porous structure, and plastic deformation may occur. The pressure-sintering process with double printing and drying was proved to be a reliable process to produce sintered - silver bonding with high strength. The reliability of silver joint was better than that of SAC305 or SN100C. Besides, the technique of measuring the curvature by laser scanning, introduced in this work, showed its significance by directly reflecting the bonding integrity of die-attachment. As a nondestructive testing technique, It was a cheaper and faster way to examine the die-attachment. Additionally, it overcame the disadvantage of X-ray Inspection: it was of the ability to differentiate between layers of die-attachment.
Master of Science

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Dutka, Tomáš. „Návrh udržitelné městské struktury - na bázi středověkého města - pro 21.století“. Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2021. http://www.nusl.cz/ntk/nusl-443712.

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The assignment of diploma thesis was the design of a sustainable urban structure based on a medieval city in Náměšť nad Oslavou. As part of the work, I tried to find the best solution for this solved area, which is isolated by a railway corridor and suggest a new city district based on the principle of a medieval city, which will be linked to the existing city. The proposed development of city blocks is built on a system of platforms that level the terrain within the blocks and enable optimal parking spaces and the use of commercials. This development is complemented by several blocks with villa houses and a city SPA complex. The proposal supports the construction of cycle paths that connect parts of the solved area with the Rathan recreation pond. The design also includes a large park with a lookout tower and a sports ground on the city horizon ner the SPA complex. The accent was also placed on the public area near the new railway station, which serves to gather people for cultural and entertainment opportunities. This public space should not compete with an existing Masaryk square, which fulfills a representative and administration function.

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Bruno, Felix. „An experimental study on voids in area array devices for mixed alloy assemblies“. Diss., Online access via UMI:, 2006.

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Fischer, Tiffany Brink. „A structural and energetic description of protein-protein interactions in atomic detail“. Texas A&M University, 2006. http://hdl.handle.net/1969.1/4775.

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Here, we present the program QContacts, which implements Voronoi polyhedra to determine atomic and residue contacts across the interface of a protein-protein interaction. While QContacts also describes hydrogen bonds, ionic pair and salt bridge interactions, we focus on QContactsÃ¢ÂÂ identification of atomic contacts in a protein interface compared against the current methods. Initially, we investigated in detail the differences between QContacts, radial cutoff and Change in Solvent Accessible Surface Area (delta-SASA) methods in identifying pair-wise contacts across the binding interface. The results were assessed based on a set of 71 double cycle mutants. QContacts excelled at identifying knob-in-hole contacts. QContacts, closest atom radial cutoff and the delta-SASA methods performed well at picking out direct contacts; however, QContacts was the most accurate in excluding false positives. The significance of the differences identified between QContacts and previous methods was assessed using pair-wise contact frequencies in a broader set of 592 protein interfaces. The inaccuracies introduced by commonly used radial cutoff methods were found to produce misleading bias in the residue frequencies. This bias could compromise pair-wise potentials that are based on such frequencies. Here we show that QContacts provides a more accurate description of protein interfaces at atomic resolution than other currently available methods. QContacts is available in a web-based form at http://tsailab.tamu.edu/qcons (Fischer et al., 2006).

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Pyland, James. „Damage metric-based thermal cycling guidelines for area-array packages used in harsh thermal conditions“. Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/18851.

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Bücher zum Thema "Area solved"

Beloshistaya, Anna. Learning to solve math problems in the 4th grade. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1537873.

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The textbook considers the methodology of working on problems in the 4th grade when teaching mathematics according to any textbook included in the Federal Educational Package. It contains a detailed methodological analysis of all types of problems that are found in various textbooks of mathematics for the 4th grade, as well as specific fragments of situations of working with problems in the classroom. It will be useful for teachers of mathematics methodology in universities and pedagogical schools, as well as students of pedagogical specialties, as well as practical teachers working in schools, tutors of all levels and parents who help children in their studies.

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IEEE, International Solid-State Circuits Conference (53rd 2006 San Francisco Calif ). Digest of technical papers: 2006 IEEE International Solid-State Circuits Conference : sponsors: IEEE Solid-State Circuits Society, IEEE San Francisco Section, Bay Area Council, University of Pennsylvania. [Piscataway, N.J.]: IEEE, 2006.

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Ismailov, Nariman. Scientific basis of environmental biotechnology practical. ru: INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1048434.

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The monograph is devoted to modern biotechnology, which allows to solve urgent environmental problems in all areas of modern society. Described the current use of biotechnological methods for environmental protection. The common assessment of the environment, the analysis bioaccumulating capacity of the biosphere, presented information on bio-ecological potential of human society. Considers the issues of technological bio-energetics, obtaining biodegradable materials, different fields of organic waste, bioremediation of soils contaminated with petroleum products, pesticides, heavy metals, solid waste processing, utilization of oil sludge and drill cuttings, cleaning of soil and groundwater from contamination, the use of biotechnology in the oil industry and others Described the modern problems of organic agriculture and the progress in this area. Discussed microbiological, biochemical and technological fundamentals of these processes. The prospects of the use of biotechnology in integrated environmental protection. Discusses the modern view of ecological culture and ecological civilization in the framework of the problems under consideration. Designed for teachers, students, engineers, ecologists, agricultural workers, civil servants, decision-makers, engaged in the manufacture engaged in the development of programs for socio-ecological sustainable development.

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Komatsubara, T. Physics of strongly correlated electron systems: Report of priority areas on physics of strongly corrleated [sic] electron systems. Minato-ku, Tokyo, Japan: Publication Office, Japanese Journal of Applied Physics, 1999.

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Fridman, Yuriy, und Aleksandr Korzhenevich. Learning to solve problems in physics: preparing for the Unified State Exam. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/995926.

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If you are holding this textbook in your hands, it means that you understand the need to solve problems when studying a physics course at school. Indeed, it is difficult to overestimate the effect that the solution of problems in the study of physics gives. The textbook contains about 800 problems for the high school physics course. The tasks are based on the examination materials of various universities, including the Republic of Crimea, data from the magazines "Kvant", "Physics at School", information received from correspondence physics and mathematics schools of the Moscow State University named after M. V. Lomonosov, National Research Nuclear University "MEPhI", Bauman Moscow State Technical University, Moscow Institute of Physics and Technology (State University). We also used the problem books that were released in various years to help those entering universities. The number of problems and their selection are not random and allow, according to the compilers, to demonstrate the types of problems that are often found in the high school physics course, the most rational methods, general approaches and ideas for solving them, and also help to acquire certain skills in solving problems. Can be useful for use in secondary schools when working with students for whom physics is of interest, optional, if you prepare for the entrance exams for physics, a specialized school with advanced study of physics, as well as anyone who wants to learn how to solve problems in physics.

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Solid Waste Interim Steering Committee (Toronto, Ont.). Status report #2 to member councils on the long-term plan for the management of solid waste in the Greater Toronto Area. Toronto, Ont: SWISC, 1990.

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Chikurov, Nikolay. Mathematical problems of coordinate measuring machines. ru: INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1163946.

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The monograph discusses solutions to mathematical problems related to the measurement of various machine-building parts on coordinate measuring machines (CMM). In addition, a number of mathematical problems that arise when measuring parts on the CMM are solved. The method of carrying out the corresponding measurements and mathematical calculations is given. It is intended for specialists who develop and maintain CMM control systems, for CMM operators, as well as for students of technical universities of relevant specialties.

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Sdvizhkov, Oleg, und Nikolay Macnev. Physics: a workshop in Excel. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1014621.

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In the workshop, the program codes of user-defined VBA Excel functions are presented; it is shown how these functions are used to solve typical problems of elementary physics on a computer. The textbook includes problems in kinematics, dynamics, statics, molecular kinetic theory, thermal phenomena and electrodynamics. Each chapter includes: brief information on physics; code for one or more user functions and their description; step-by-step solutions to typical problems using user functions, illustrated with drawings of dialog boxes, fragments of worksheets, etc., made using screenshots. Meets the requirements of the federal state educational standards of secondary vocational education of the latest generation. It is intended for students of secondary vocational education institutions studying physics, but it will be useful for anyone who wants to learn how to solve problems in elementary physics at a modern level — on a computer using Excel.

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Dodaro, Gene L. High-risk areas: Actions needed to solve pressing management problems : statement of Gene L. Dodaro, Assistant Comptroller General, Accounting and Information Management Division, before the Committee on Governmental Affairs, U.S. Senate. Washington, D.C: The Office, 1997.

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Buchteile zum Thema "Area solved"

Jasiūnienė, Elena, Markus G. R. Sause, Vykintas Samaitis, Dimitrios G. Aggelis, Maria Pina Limongelli und Steve Vanlanduit. „Conclusions“. In Structural Health Monitoring Damage Detection Systems for Aerospace, 273–84. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72192-3_10.

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AbstractThe state of the art of structural health monitoring damage detection systems reviewed in this book shows that it is a promising area of technologies. SHM damage detection systems in civil aviation are still mostly limited to lab applications because there are still issues, which need to be solved for such systems to be integrated in an aircraft structure. Therefore, further research is needed to solve the current drawbacks/limitations of the existing SHM approaches such that this technology can be used in aircrafts.Despite the current limitations, SHM application for damage detection in aircrafts would make the flying safer and the structure lifetime longer and reduce the maintenance time and costs considering that the maintenance could be performed not at the predetermined intervals, but upon the need based on the condition that would be determined by the SHM systems used. We conclude some of the important differences and the common challenges to the methods reviewed in this book and provide an outlook on the next steps to a successful implementation.

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Popov, Valentin L. „Adhesion of a Thin Soft Matter Layer: The Role of Surface Tension“. In Springer Tracts in Mechanical Engineering, 461–72. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_19.

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AbstractWe consider an adhesive contact between a thin soft layer on a rigid substrate and a rigid cylindrical indenter (“line contact”) taking the surface tension of the layer into account. First, it is shown that the boundary condition for the surface outside the contact area is given by the constant contact angle—as in the case of fluids in contact with solid surfaces. In the approximation of thin layer and under usual assumptions of small indentation and small inclination angles of the surface, the problem is solved analytically. In the case of a non-adhesive contact, surface tension makes the contact stiffer (at the given indentation depth, the contact half-width becomes smaller and the indentation force larger). In the case of adhesive contact, the influence of surface tension seems to be more complicated: For a flat-ended punch, it increases with increasing the surface tension, while for a wedge, it decreases. Thus, the influence of the surface tension on the adhesion force seems to be dependent on the particular geometry of the contacting bodies.

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Puttlitz, Karl J., und Kathleen A. Stalter. „Solder Bump Flip-Chip Replacement Technology on Ceramic Carriers“. In Area Array Interconnection Handbook, 350–70. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1389-6_9.

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Chandrappa, Ramesha, und Diganta Bhusan Das. „Issues in Disaster Affected Area“. In Solid Waste Management, 329–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28681-0_13.

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Helming, Kurt, und Uwe Preckwinkel. „Texture Analysis with Area Detectors“. In Solid State Phenomena, 71–76. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/3-908451-09-4.71.

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Ninos, Nikolas, und William M. Carty. „Using Surface Area to Solve an Inappropriate Mixing Problem“. In Materials & Equipment/Whitewares: Ceramic Engineering and Science Proceedings, Volume 22, Issue 2, 79–85. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470294673.ch15.

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Llewellyn, Philip L., Emily Bloch und Sandrine Bourrelly. „Surface Area/Porosity, Adsorption, Diffusion“. In Characterization of Solid Materials and Heterogeneous Catalysts, 853–79. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2012. http://dx.doi.org/10.1002/9783527645329.ch19.

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Baier, Daniel, Dirk Beyer und Karlheinz Friedberger. „JavaSMT 3: Interacting with SMT Solvers in Java“. In Computer Aided Verification, 195–208. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-81688-9_9.

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AbstractSatisfiability Modulo Theories (SMT) is an enabling technology with many applications, especially in computer-aided verification. Due to advances in research and strong demand for solvers, there are many SMT solvers available. Since different implementations have different strengths, it is often desirable to be able to substitute one solver by another. Unfortunately, the solvers have vastly different APIs and it is not easy to switch to a different solver (lock-in effect). To tackle this problem, we developed JavaSMT, which is a solver-independent framework that unifies the API for using a set of SMT solvers. This paper describes version 3 of JavaSMT, which now supports eight SMT solvers and offers a simpler build and update process. Our feature comparisons and experiments show that different SMT solvers significantly differ in terms of feature support and performance characteristics. A unifying Java API for SMT solvers is important to make the SMT technology accessible for software developers. Similar APIs exist for other programming languages.

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Grannan, S. M., S. E. Labov, A. E. Lange, B. Sadoulet, B. A. Young und J. Emes. „SLAPS: Superconducting Large Area Phonon Sensors“. In Springer Series in Solid-State Sciences, 500–501. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-84888-9_195.

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Steiger, Rolf, Robert Beer, J. F. Fernandez-Sanchez und U. E. Spichiger-Keller. „Large Area, Nanoparticulate Metal Oxide Coatings for Consumer Nanotechnologies“. In Solid State Phenomena, 1193–98. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-30-2.1193.

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Konferenzberichte zum Thema "Area solved"

Bittnerova, Daniela. „Some application problems of space and area curves solved unconventionally“. In PROCEEDINGS OF THE 43RD INTERNATIONAL CONFERENCE APPLICATIONS OF MATHEMATICS IN ENGINEERING AND ECONOMICS: (AMEE’17). Author(s), 2017. http://dx.doi.org/10.1063/1.5013985.

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Cesaroni, Renzo, und Umberto Repetti. „Solved Problems of High-Density and High-Temperature Drilling Fluid in an Environmentally Sensitive Area“. In SPE/IADC Drilling Conference. Society of Petroleum Engineers, 1993. http://dx.doi.org/10.2118/25701-ms.

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fan, chenchen, liangjin huang, Jiawei He, Zhiyong Pan, Jinyong Leng und Pu Zhou. „Mode-solved bending loss measurement for large-mode-area fiber based on spatial and spectral resolution imaging“. In Conference on Advanced Laser Technology and Application, herausgegeben von Pu Zhou, Xuechun Lin, Yangjian Cai, Yongzhen Huang, Jian Zhang, Cunlin Zhang, Zhiyi Wei et al. SPIE, 2020. http://dx.doi.org/10.1117/12.2580331.

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Loerakker, Sandra, Giulia Argento, Cees W. J. Oomens und Frank P. T. Baaijens. „Effects of Valve Geometry and Tissue Anisotropy on the Radial Stretch and Coaptation Area of Tissue-Engineered Heart Valves“. In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14234.

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Tissue engineering represents a promising technique to overcome the limitations of the current valve prostheses, since it allows for synthesizing living, autologous valves that have the potential to grow and remodel in response to changing demands. However, one particular problem with tissue-engineered heart valves (TEHVs) is retraction of the valve leaflets (Fig. 1), which results in valvular insufficiency [1, 2]. As long-term regurgitation will lead to ventricular failure, this is a critical problem that needs to be solved before TEHVs can be used in clinical practice.

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Thompson, Scott M., und Hongbin Ma. „Effect of Area Ratio on Thermal Spreading Resistance of a Cubic Heat Spreader“. In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17321.

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A unique non-dimensional scheme has been employed to analytically determine the steady-state temperature field within a cubic heat spreader of unity aspect-ratio undergoing centralized, uniform heat flux with square footprint. This ‘square-on-square’ boundary value problem was solved using method of Fourier expansion. Plots of the heat spreader non-dimensional maximum temperature and non-dimensional thermal spreading resistance are provided for various Biot numbers, heat spreader thicknesses and a newly-defined ‘area ratio’ — the ratio of heater cross-sectional area to heat spreader cross-sectional area (i.e. footprint). The proposed solution is advantageous for determining optimal heat spreading configurations with low Biot numbers — typical of many electronics packaging applications and heat spreaders of very high effective thermal conductivity. The presented results indicate that the non-dimensional, maximum temperature increases as the area ratio decreases and that a limiting, non-dimensional thermal spreading resistance exists for relatively thick heat spreaders regardless of area ratio or Biot number. A critical, non-dimensional thickness was also found in which the non-dimensional, maximum temperature becomes near unity regardless of Biot number or area ratio.

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Kuz'menko, Aleksandr, Dmitrij Kondrashov, Anna Sazonova, Ludmila Filippova und Rodion Filippov. „Intelligent system of forest area recognition for tasks of geographically distributed economic systems“. In International Conference "Computing for Physics and Technology - CPT2020". Bryansk State Technical University, 2020. http://dx.doi.org/10.30987/conferencearticle_5fce27712625b2.08767643.

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For a long period, our country has been in the process of radical transformations of the state economic system, associated with the final transition to a market system of management, the development of local self-government and the independence of economic entities. In the new conditions of the emerging market, the issues of ensuring the sustainable development of territorial economic systems and sectors of the economy, which are the source and guarantor of social stability, employment, a high level and quality of life of the population of the regions, come to the fore. The paper deals with an intelligent system for recognizing the dynamics of changes in forest areas based on automatic pattern recognition methods. The existing methods of processing graphical information, classification and clustering methods that are of value within the framework of the problems being solved are considered, and several original algorithms are proposed. LTP and FFT algorithms were selected as feature extractors of which the simplest and most productive option is LTP. Histogram equalization algorithms, median and Gaussian filters to eliminate noise and remove small image details are chosen to pre-process the image. Euclidean and Mahalanobis distances were used as separability measures. Naive Bayes classifier is proposed to use for classification.

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Bikmeyev, Alexander T., Rafail K. Gazizov, Achilles Vairis und Alfiya M. Yamileva. „Modeling the Temperature Distribution in the Contact Area of a Moving Object in the Case of Linear Friction Welding“. In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64343.

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This paper describes the results of the mathematical and computer modeling efforts of heat generation in the contact area of a moving object on an infinite plane with friction. The distribution of contact pressure with a linear approximation was obtained. The heat equations for a nonlinear volume heat source were solved. It is shown, that at the initial stages of the linear friction welding (LFW) process temperature distribution is non-elliptical with two hot spots appearing near the edges of the moving specimen. Then as the process progresses these two spots expand and move to the center of the specimen. The results of the mathematical and the numerical modeling in ANSYS APDL software are in good quantitative agreement.

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Hejazi, Amir Mohsen, und Mohammad Pourgol Mohammad. „Layout Optimization of a Multiple Pinned Joint Under Bending in a Limited Contact Area“. In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62921.

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Layout determination of connectors in different mechanical configurations improves the design characteristics. The issue has recently become more practical in sensitive industries, especially in montage processes. Since connections are under different loads like bending, the layout of connection should be considered as an effective design factor in different loading conditions which is itself a step forward in achieving the optimized connection and also increases the connection life. This paper analyses the layout effects in a multiple pinned joint under bending in a limited area. The goal is to minimize the average stress and having a uniform stress distribution in the connections in order to prevent the failure inducing effect of stress concentration. The common method for solving these optimization problems is to couple two finite element numerical stress analysis software with an optimization tool or independent software which is a highly time consuming method due to enormous volume of the calculations in each iteration. In this paper the optimization problem is mathematically modeled and solved using Genetic Algorithm (GA). Genetic algorithm is found applicable here due to nonlinear behavior and complexity of the objective function in the optimization problem where analytical optimization methods are not useful. The validation results of stress analysis are obtained using finite element software. The optimized connections have longer lifetime and can carry higher loads because of degraded effects of stress concentration and minimized stresses.

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Huang, Jianmeng, Chenghui Gao, Youxi Lin und Xiezhao Lin. „Analysis of Contact Area Between an Elasto-Plastic Rough Body and a Flat Body Under Different Working Mode“. In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-37443.

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A thermo-mechanical coupling contact model between a fractal rough body and a flat body is established. In the model, the heat flux coupling between the sliding surfaces and the effect of elasto-plastic deformation of the rough body are considered. To obtain the transient microcontact process between the rough body and the flat body during rotating sliding friction, the thermo-mechanical problem under this three-dimensional model is solved by the nonlinear finite element multi-physical methods. The comparisons of the real contact area are analyzed under two different working modes, including loading processes with and without frictional rotating. During the loading and rotating process, the shear stress and the total frictional force on the frictional rough interface, and the equivalent plastic strain of the contact asperity are larger. All these including the thermal expansion make the real contact area increase with the applied normal load much faster under the working mode of loading and rotating than it does under the only loading mode.

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de Souza e Silva, Osvaldo Pinheiro, Severino Fonseca da Silva Neto, Ilson Paranhos Pasqualino und Antonio Carlos Ramos Troyman. „Effective Shear Area in One Dimensional Ship Hull Finite Element Models to Predict Natural Frequencies of Vibration“. In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-11463.

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This work discusses procedures used to determine effective shear area of ship sections. Five types of ships have been studied. Initially, the vertical natural frequencies of an acrylic scale model 3m in length in a laboratory at university are obtained from experimental tests and from a three dimensional numerical model, and are compared to those calculated from a one dimensional model which the effective shear area was calculated by a practical computational method based on thin-walled section Shear Flow Theory. The second studied ship was a ship employed in midshipmen training. Two models were made to complement some studies and vibration measurements made for those ships in the end of 1980 decade when some vibration problems in them were solved as a result of that effort. Comparisons were made between natural frequencies obtained experimentally, numerically from a three dimensional finite element model and from a one dimensional model in which effective shear area is considered. The third and fourth were, respectively, a tanker ship and an AHTS (Anchor Handling Tug Supply) boat, both with comparison between three and one dimensional models results out of water. Experimental tests had been performed in these two ships and their results were used in other comparison made after the inclusion of another important effect that acts simultaneously: the added mass. Finally, natural frequencies experimental and numerical results of a barge are presented. The natural frequencies numerical results of vertical hull vibration obtained from these approximations of effective shear areas for the five ships are finally discussed.

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Berichte der Organisationen zum Thema "Area solved"

Apostolatos, A., R. Rossi und C. Soriano. D7.2 Finalization of "deterministic" verification and validation tests. Scipedia, 2021. http://dx.doi.org/10.23967/exaqute.2021.2.006.

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This deliverable focus on the verification and validation of the solvers of Kratos Multiphysics which are used within ExaQUte. These solvers comprise standard body-fitted approaches and novel embedded approaches for the Computational Fluid Dynamics (CFD) simulations carried out within ExaQUte. Firstly, the standard body-fitted CFD solver is validated on a benchmark problem of high rise building - CAARC benchmark and subsequently the novel embedded CFD solver is verified against the solution of the body-fitted solver. Especially for the novel embedded approach, a workflow is presented on which the exact parameterized Computer-Aided Design (CAD) model is used in an efficient manner for the underlying CFD simulations. It includes: A note on the space-time methods Verification results for the body-fitted solver based on the CAARC benchmark Workflow consisting of importing an exact CAD model, tessellating it and performing embedded CFD on it Verification results for the embedded solver based on a high-rise building API definition and usage

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Lee, D. W. Composite analysis for solid waste storage area 6. Office of Scientific and Technical Information (OSTI), September 1997. http://dx.doi.org/10.2172/612041.

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Boegly, Jr., W. J., R. B. Dreier, D. D. Huff, A. D. Kelmers, D. C. Kocher, S. Y. Lee, F. R. O'Donnell, F. G. Pin und E. D. Smith. Characterization plan for Solid Waste Storage Area 6. Office of Scientific and Technical Information (OSTI), Dezember 1985. http://dx.doi.org/10.2172/6193357.

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Lietzke, D. A., und S. Y. Lee. Soil survey of Solid Waste Storage Area 6. Office of Scientific and Technical Information (OSTI), Juni 1986. http://dx.doi.org/10.2172/5713469.

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Rodier, Caroline, Andrea Broaddus, Miguel Jaller, Jeffery Song, Joschka Bischoff und Yunwan Zhang. Cost-Benefit Analysis of Novel Access Modes: A Case Study in the San Francisco Bay Area. Mineta Transportation Institute, November 2020. http://dx.doi.org/10.31979/mti.2020.1816.

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The first-mile, last-mile problem is a significant deterrent for potential transit riders, especially in suburban neighborhoods with low density. Transit agencies have typically sought to solve this problem by adding parking spaces near transit stations and adding stops to connect riders to fixed-route transit. However, these measures are often only short-term solutions. In the last few years, transit agencies have tested whether new mobility services, such as ridehailing, ridesharing, and microtransit, can offer fast, reliable connections to and from transit stations. However, there is limited research that evaluates the potential impacts of these projects. Concurrently, there is growing interest in the future of automated vehicles (AVs) and the potential of AVs to solve this first-mile problem by reducing the cost of providing these new mobility services to promote access to transit. This paper expands upon existing research to model the simulate the travel and revenue impacts of a fleet of automated vehicles that provide transit access services in the San Francisco Bay Area offered over a range of fares. The model simulates a fleet of AVs for first-mile transit access at different price points for three different service models (door-to-door ridehailing and ridesharing and meeting point ridesharing services). These service models include home-based drop-off and pick-up for single passenger service (e.g., Uber and Lyft), home-based drop-off and pick-up for multi-passenger service (e.g., microtransit), and meeting point multi-passenger service (e.g., Via).

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Prignano, A. L. Concrete characterization for the 300 Area Solvent Evaporator Closure Site. Office of Scientific and Technical Information (OSTI), Februar 1995. http://dx.doi.org/10.2172/32590.

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Rothschild, E. R., J. Switek, J. L. Llopis und C. D. Farmer. Geophysical investigations at ORNL solid waste storage area 3. Office of Scientific and Technical Information (OSTI), Juli 1985. http://dx.doi.org/10.2172/5458892.

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Norman Bessette, Douglas S. Schmidt, Jolyon Rawson, Rhys Foster und Anthony Litka. Program Area of Interest: Fuel Transformer Solid Oxide Fuel Cell. Office of Scientific and Technical Information (OSTI), Februar 2006. http://dx.doi.org/10.2172/886019.

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Ammons, J. T., D. H. Phillips, M. E. Timpson und S. Y. Lee. Characteristics of soils and saprolite in Solid Waste Storage Area 6. Office of Scientific and Technical Information (OSTI), September 1987. http://dx.doi.org/10.2172/5719216.

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Adamson, David, Charles Newell, Michael Truex und Lirong Zhong. Enhanced Amendment Delivery to Low Permeability Zones for Chlorinated Solvent Source Area Bioremediation. Fort Belvoir, VA: Defense Technical Information Center, September 2014. http://dx.doi.org/10.21236/ada621906.

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