Готові списки джерел за темами / "street physics"

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Добірка наукової літератури з теми ""street physics""

Автор: Grafiati
Опубліковано: 30 травня 2022
Оновлено: 31 травня 2022

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Статті в журналах з теми ""street physics""

1

Sandhyavitri, Ari, Agru Maulana, Muhammad Ikhsan, Agus Ika Putra, Rizki Ramadhan Husaini, and Fajar Restuhadi. "Simulation Modelling of Traffic Flows in the Central Business District Using PTV Vissim in Pekanbaru, Indonesia." Journal of Physics: Conference Series 2049, no. 1 (October 1, 2021): 012096. http://dx.doi.org/10.1088/1742-6596/2049/1/012096.

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Abstract The state of art simulation modelling in managing traffic flow within a busy central business district (CBD) is demonstrated in this article. The objectives of this article were to; identify the existing condition of the street V/C ratios within the CBD area, and to develop various simulations modelling. The development of microscopic traffic simulations encompassing 5 streets within the CBD area in Pekanbaru, Indonesia using the PTV Vissim application was performed as a case study. The existing conditions of these 5 streets were very busy (Level of Service C and D) with on-street parking and on-street traders (vendors) along the streets. Several simulations model based on 4 traffic management approaches were applied; (i) controlling on street traders (vendors) activity, (ii) controlling parking lots, and (iii) changing the on-street parking angle and (iv) combination of these approaches. The simulation results have indicated that the optimum simulation modelling in managing CBD traffic flow within these 5 streets was conducted by managing the on-street parking angle at the position of 300 as well as controlling on street traders activity. Hence, by conducting simulations using this application improved the streets Level of services (LOS) within this CBD area from D (0,75<VC<0,84) to C (0.45<VC<0.74).
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2

Kuchment, Anna. "The Physics of Wall Street." Scientific American 308, no. 1 (December 18, 2012): 76. http://dx.doi.org/10.1038/scientificamerican0113-76b.

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3

HU, J. C., and Y. ZHOU. "Flow structure behind two staggered circular cylinders. Part 2. Heat and momentum transport." Journal of Fluid Mechanics 607 (June 30, 2008): 81–107. http://dx.doi.org/10.1017/s002211200800181x.

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This work aims to study flow structures, heat and momentum transport in the wake of two staggered circular cylinders. In order to characterize heat transport in the flow, both cylinders were slightly heated so that heat generated could be treated as a passive scalar. The velocity and temperature fluctuations were simultaneously measured by traversing a three-wire (one cross-wire plus one cold wire) probe across the wake, along with a fixed cross-wire, which acted to provide a reference signal. Four distinct flow structures, i.e. two single-street modes (S-I and S-II) and two twin-street modes (T-I and T-II), are identified based on the phase-averaged vorticity contours, sectional streamlines, and their entrainment characteristics. Mode S-I is characterized by a vortex street approximately antisymmetric about the centreline. This mode is further divided into S-Ia and S-Ib, which differ greatly in the strength of vortices. The vortex street of Mode S-II is significantly asymmetric about the centreline, the strenth of vortices near the downstream cylinder exceeding by 50% that on the other side. Mode T-I consists of two alternately arranged vortex streets; the downstream-cylinder-generated street is significantly stronger than that generated by the upstream cylinder. In contrast, Mode T-II displays two streets approximately antisymmetrical about the wake centreline. Free-stream fluid is almost equally entrained from either side into the wake in Modes S-Ia and T-II, but largely entrained from the downstream cylinder side in Modes S-II and T-I. The entrainment motion in Mode S-Ib is very weak owing to the very weak vortex strength. Vortices decay considerably more rapidly in the twin-street modes, under vigorous interactions between the streets, than in the single-street modes. This rapid decay is particularly evident for the inner vortices near the wake centreline in Modes T-II and T-I. Other than flow structures, heat and momentum transport characteristics are examined in detail. Their possible connection to the initial conditions is also discussed.
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Banks, Michael. "Belfast street named after physics giant." Physics World 28, no. 4 (April 2015): 8. http://dx.doi.org/10.1088/2058-7058/28/4/12.

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5

Barber, Michael N., and Paul G. McCormick. "Robert Street 1920–2013." Historical Records of Australian Science 27, no. 2 (2016): 211. http://dx.doi.org/10.1071/hr15013.

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Following wartime work on radar and a University of London PhD awarded for measurement of absolute power, Bob Street developed his interest in low-temperature magnetism in solids while on the staff at Sheffield University. In 1960 he became Foundation Professor of Physics at Monash University where he built a department with strong capabilities in solid state physics. His own research continued at Monash but was put aside when he became Director of the Research School of Physical Sciences at the Australian National University (1973–7) and then Vice-Chancellor at the University of Western Australia (1978–86). Although the ANU experience was not a happy one, he flourished at UWA where his initiatives and strategic thinking laid the groundwork for advancement of the university. Street had kept up with advances in his research field and upon retirement he went back to it with notable success in publication, supervision of research students, acquisition of research grants and fruitful collaborations. He is fondly remembered as a first class physicist with a passion for cricket.
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Kang, Bumjoon, Sangwon Lee, and Shengyuan Zou. "Developing Sidewalk Inventory Data Using Street View Images." Sensors 21, no. 9 (May 10, 2021): 3300. http://dx.doi.org/10.3390/s21093300.

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(1) Background: Public sidewalk GIS data are essential for smart city development. We developed an automated street-level sidewalk detection method with image-processing Google Street View data. (2) Methods: Street view images were processed to produce graph-based segmentations. Image segment regions were manually labeled and a random forest classifier was established. We used multiple aggregation steps to determine street-level sidewalk presence. (3) Results: In total, 2438 GSV street images and 78,255 segmented image regions were examined. The image-level sidewalk classifier had an 87% accuracy rate. The street-level sidewalk classifier performed with nearly 95% accuracy in most streets in the study area. (4) Conclusions: Highly accurate street-level sidewalk GIS data can be successfully developed using street view images.
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7

HU, J. C., and Y. ZHOU. "Flow structure behind two staggered circular cylinders. Part 1. Downstream evolution and classification." Journal of Fluid Mechanics 607 (June 30, 2008): 51–80. http://dx.doi.org/10.1017/s0022112008001808.

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Flow structures, Strouhal numbers and their downstream evolutions in the wake of two-staggered circular cylinders are investigated at Re=7000 using hot-wire, flow-visualization and particle-image velocimetry techniques. The cylinder centre-to-centre pitch, P, ranges from 1.2d to 4.0d (d is the cylinder diameter) and the angle (α) between the incident flow and the line through the cylinder centres is 0° ~ 90°. Four distinct flow structures are identified at x/d ≥ 10 (x is the downstream distance from the mid-point between the cylinders), i.e. two single-street modes (S-I and S-II) and two twin-street modes (T-I and T-II), based on Strouhal numbers, flow topology and their downstream evolution. Mode S-I is further divided into two different types, i.e. S-Ia and S-Ib, in view of their distinct vortex strengths. Mode S-Ia occurs at P/d ≤ 1.2. The pair of cylinders behaves like one single body, and shear layers separated from the free-stream sides of the cylinders roll up, forming one street of alternately arranged vortices. The street is comparable to that behind an isolated cylinder in terms of the topology and strength of vortices. Mode S-Ib occurs at α ≤ 10° and P/d > 1.5. Shear layers separated from the upstream cylinder reattach on or roll up to form vortices before reaching the downstream cylinder, resulting in postponed flow separation from the downstream cylinder. A single vortex street thus formed is characterized by significantly weakened vortices, compared with Mode S-Ia. Mode S-II is identified at P/d=1.2~2.5 and α>20° or 1.5≤P/d≤4.0 and 10° < α≤20°, where both cylinders generate vortices, with vortex shedding from the upstream cylinder at a much higher frequency than from the downstream, producing two streets of different widths and vortex strengths at x/d≤5.0. The two streets interact vigorously, resulting in a single street of the lower-frequency vortices at x/d≥10. The vortices generated by the downstream cylinder are significantly stronger than those, originating from the upstream cylinder, in the other row. Mode T-I occurs at P/d≥2.5 and α=20°~88°; the two cylinders produce two streets of different vortex strengths and frequencies, both persisting beyond x/d=10. At P/d≥2.5 and α≥88°, the two cylinders generate two coupled streets, mostly anti-phased, of the same vortex strength and frequency (St≈0.21), which is referred to as Mode T-II. The connection of the four modes with their distinct initial conditions, i.e. interactions between shear layers around the two cylinders, is discussed.
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8

GODOY-DIANA, RAMIRO, CATHERINE MARAIS, JEAN-LUC AIDER, and JOSÉ EDUARDO WESFREID. "A model for the symmetry breaking of the reverse Bénard–von Kármán vortex street produced by a flapping foil." Journal of Fluid Mechanics 622 (March 10, 2009): 23–32. http://dx.doi.org/10.1017/s0022112008005727.

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The vortex streets produced by a flapping foil of span to chord aspect ratio of 4:1 are studied in a hydrodynamic tunnel experiment. In particular, the mechanisms giving rise to the symmetry breaking of the reverse Bénard–von Kármán (BvK) vortex street that characterizes fishlike swimming and forward flapping flight are examined. Two-dimensional particle image velocimetry (PIV) measurements in the midplane perpendicular to the span axis of the foil are used to characterize the different flow regimes. The deflection angle of the mean jet flow with respect to the horizontal observed in the average velocity field is used as a measure of the asymmetry of the vortex street. Time series of the vorticity field are used to calculate the advection velocity of the vortices with respect to the free stream, defined as the phase velocity Uphase, as well as the circulation Γ of each vortex and the spacing ξ between consecutive vortices in the near wake. The observation that the symmetry-breaking results from the formation of a dipolar structure from each couple of counter-rotating vortices shed on each flapping period serves as the starting point to build a model for the symmetry-breaking threshold. A symmetry-breaking criterion based on the relation between the phase velocity of the vortex street and an idealized self-advection velocity of two consecutive counter-rotating vortices in the near wake is established. The predicted threshold for symmetry breaking accounts well for the deflected wake regimes observed in the present experiments and may be useful to explain other experimental and numerical observations of similar deflected propulsive vortex streets reported in the literature.
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9

Dynnikova, G. Ya, Ya A. Dynnikov, and S. V. Guvernyuk. "Mechanism underlying Kármán vortex street breakdown preceding secondary vortex street formation." Physics of Fluids 28, no. 5 (May 2016): 054101. http://dx.doi.org/10.1063/1.4947449.

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10

Chiao, May. "Herd on the street." Nature Physics 6, no. 3 (March 2010): 156. http://dx.doi.org/10.1038/nphys1617.

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Дисертації з теми ""street physics""

1

Minakova, K., Serhii Petrov, and S. Radoguz. "How "Street chemistry" and "Street physics" settled at the National Technical University "Kharkiv Polytechnic Institute"." Thesis, Copissaurio Repro – Centro Imp. Unip. Lda. Campus de Gualtar, 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/46263.

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2

Lundin, Lukas. "Tip vortex cavitation and diffused vorticity of propeller profiles: a modelling approach : Investigation of an implemented TVI model, and implementation and investigation of a DVH model." Thesis, Karlstads universitet, Institutionen för ingenjörsvetenskap och fysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-65102.

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To predict fluid properties and interactions is an important task for the industry. It is plagued, however, by being close to impossible to predict analytically. Hence, it is customary to turn to numerical solutions. This in itself comes with many different methods and approaches suitable for different needs. This work focuses on two methods: Tip Vortex Index (TVI) and Diffused Vortex Hydrodynamics (DVH). TVI is a method to predict when a marine propeller will experience cavitation of tip vortices and is based on calculations from a Boundary Element Method (BEM). DVH is a particle method for simulating the circulation of a fluid in two dimensions and three dimensions. The aim is to investigate an implemented TVI model based on MPUF-3A for different marine propeller series, with different sub-designs for a total of 28 unique propellers, and implement the DVH method and test it for 3 different bodies. The results of this thesis show that the implemented TVI model is non-functional for the 28 different propellers, but the DVH method is successfully implemented and able to handle 2 different bodies.
Att förutspå fluid egenskaper och interaktioner är en viktig uppgift för industrin. Det plågas dock av att vara näst intil omöjligt att förutspå analytiskt. Det är därför vanligt att vända sig till numeriska lösningar. Detta kommer i sig med många olika metoder och tillvägagångssätt som passar olika behov. Detta arbete fokuserar på två metoder: Tip Vortex Index (TVI) och Diffused Vortex Hydrodynamics (DVH). TVI är en metod för att förutsäga när en marin propeller kommer att uppleva kavitation av spetsvirvlar och baseras på beräkningar från en Boundary Element Method (BEM). DVH är en partikelmetod för att simulera cirkulationen i fluid i två dimensioner och tre dimensioner. Syftet är att undersöka en implementerad TVI-modell baserad på MPUF-3A för olika marina propellerserier, med olika underdesigner, för totalt 28 unika propellrar, och implementera DVH-metoden och testa den för 3 olika kroppar. Resultaten av denna avhandling visar att den implementerade TVI-modellen är icke-funktionell för de 28 olika propellrarna, men DVH-metoden är framgångsrikt implementerad och kan hantera 2 olika kroppar
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3

Pancaldi, Marco. "Impact of waterbody evaporation in an urban canyon investigated through large-eddy simulations." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amslaurea.unibo.it/25662/.

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Lo studio dell'evaporazione da parte di specchi d'acqua in ambiente urbano può contribuire alla comprensione dei fenomeni micrometeorologici e allo sviluppo di soluzioni per migliorare il comfort delle città. Questo problema è stato affrontato usando una simulazione fluidodinamica di un canyon urbano al cui centro è stato posto un canale d'acqua. Per le simulazioni è stato usato un modello di fluidodinamica computazionale sviluppato usando OpenFOAM. Come approccio numerico è stata usata una large-eddy simulation. Tale approccio ha permesso di simulare l'evoluzione del sistema e di analizzarne le variabili medie e turbolente. Il modello è basato su un solutore fluidodinamico in approssimazione di Boussinesq a cui sono state aggiunte le equazioni di avvezione diffusione del vapore e lo scambio termico provocato dall'evaporazione. Inoltre sono state implementate delle condizioni al contorno che potessero modellizzare l'evaporazione d'acqua dal canale. Il modello è stato validato simulando un canale piano usando diversi modelli di turbolenza. Sono state eseguite due simulazioni del canyon urbano, una prima in cui il canale ha una temperatura maggiore dell'aria circostante, e una seconda in cui la temperatura del canale è inferiore all'aria. In entrambe le simulazioni la presenza del canale ha influenzato fortemente sia le variabili medie che turbolente. L'evaporazione d'acqua dal canale e il conseguente galleggiamento ha portato un aumento dell'intensità della velocità all'interno del canyon. Si è assistito inoltre ad un abbassamento delle temperature su tutto il dominio, in particolare nel caso col canale freddo, all'interno del canyon, si è raggiunto un raffreddamento del 10-20% rispetto alla differenza di temperatura tra il canale e la temperatura ambientale iniziale. Si è inoltre osservato un aumento dell'energia cinetica turbolenta in tutto il dominio, e un aumento di flussi turbolenti di quantità di moto soprattutto all'interfaccia tra il canyon e l'aria esterna.
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4

Attig, Stefan. "The Organic Pattern of Space: : A Space Syntax Analysis of Natural Streets and Street Segments for Measuring Crime and Traffic Accidents." Thesis, KTH, Urbana och regionala studier, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264938.

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The natural streets model is a research prototype that has been shown to perform better than the conventional GIS-based streets segments for explaining traffic flow and human movement. However, given its experimental status, a gap in the literature was identified. Therefore, the aim of this thesis was to contribute to the literature by investigating the wider applications of natural streets and observe whether a city’s spatial configuration (or structure) is related to outcomes of human behaviour and activity. In this case, the two previously unstudied outcomes were chosen: crime and traffic accidents. Taking an exploratory approach, Stockholm was chosen as the case study. Using the space syntax methodology, the street segments and natural streets connectivity was used to analyse whether accessibility or ‘potential through movement’ is associated with crime and traffic accidents. Two study areas were generated: a primary study area consisting of six nested zones and a secondary study area with hot spots and cold spots for events of crime and traffic accidents. To observe the statistical association between connectivity and events of crime and traffic accidents for natural streets and street segments, a classical regression model was used. The regression analysis showed that natural streets perform significantly better than street segments as they are better able to explain events of crime and traffic accidents. However, more so for traffic accidents. Most importantly, the topological structure or scaling characteristics of natural streets served as a better indicator for measuring human phenomena. The implication of this is that it could potentially be used to further the understanding of human activities in the context of the urban environment.
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5

朱廷杰 and Tingjie Zhu. "The physical environment and revitualization of local commercial street: urban design study in revitalizingShuidong street in Huizhou, Guangdong, China." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41668947.

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Zhu, Tingjie. "The physical environment and revitualization of local commercial street urban design study in revitalizing Shuidong street in Huizhou, Guangdong, China /." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B41668947.

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7

Baumgartner, Andreas [Verfasser], and Martin [Akademischer Betreuer] Dressel. "Identifying street conditions by infrared spectroscopy / Andreas Baumgartner ; Betreuer: Martin Dressel." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2020. http://d-nb.info/1206590394/34.

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8

Newby, Matthew T. "The sagittarius tidal stream and the shape of the galactic stellar halo." Thesis, Rensselaer Polytechnic Institute, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3601024.

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The stellar halo that surrounds our Galaxy contains clues to understanding galaxy formation, cosmology, stellar evolution, and the nature of dark matter. Gravitationally disrupted dwarf galaxies form tidal streams, which roughly trace orbits through the Galactic halo. The Sagittarius (Sgr) dwarf tidal debris is the most dominant of these streams, and its properties place important constraints on the distribution of mass (including dark matter) in the Galaxy. Stars not associated with substructures form the "smooth" component of the stellar halo, the origin of which is still under investigation. Characterizing halo substructures such as the Sgr stream and the smooth halo provides valuable information on the formation history and evolution of our galaxy, and places constraints on cosmological models. This thesis is primarily concerned with characterizing the 3-dimensional stellar densities of the Sgr tidal debris system and the smooth stellar halo, using data from the Sloan Digital Sky Survey (SDSS). F turnoff stars are used to infer distances, as they are relatively bright, numerous, and distributed about a single intrinsic brightness (magnitude). The inherent spread in brightnesses of these stars is overcome through the use of the recently-developed technique of statistical photometric parallax, in which the bulk properties of a stellar population are used to create a probability distribution for a given star's distance. This was used to build a spatial density model for the smooth stellar halo and tidal streams. The free parameters in this model are then fit to SDSS data with a maximum likelihood technique, and the parameters are optimized by advanced computational methods. Several computing platforms are used in this study, including the RPI SUR Bluegene and the Milkyway@home volunteer computing project. Fits to the Sgr stream in 18 SDSS data stripes were performed, and a continuous density profile is found for the major Sgr stream. The stellar halo is found to be strongly oblate (flattening parameter q=0.53). A catalog of stars consistent with this density profile is produced as a template for matching future disruption models. The results of this analysis favor a description of the Sgr debris system that includes more than one dwarf galaxy progenitor, with the major streams above and below the Galactic disk being separate substructures. Preliminary results for the minor tidal stream characterizations are presented and discussed. Additionally, a more robust characterization of halo turnoff star brightnesses is performed, and it is found that increasing color errors with distance result in a previously unaccounted for incompleteness in star counts as the SDSS magnitude limit is approached. These corrections are currently in the process of being implemented on MilkyWay@home.

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9

Dragani, Lorenzo. "Winning ways for your learning days - Analisi di libri di testo in fisica." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21062/.

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Lo scopo di questo lavoro è analizzare testi che hanno avuto un grande successo nel mondo dell’insegnamento della Fisica a livello Universitario utilizzando concetti provenienti dalla psicologia per tentare di capire se e quali siano le caratteristiche che li contraddistinguono come efficaci strumenti didattici. I testi sono stati selezionati analizzando e confrontando sia i tassi di adozione di questi presso prestigiosi Dipartimenti di Fisica sia le valutazioni e le recensioni su riviste specializzate, siti di e-commerce e rating di libri. L’analisi è stata inoltre complementata da interviste agli autori, i quali hanno spiegato come hanno sviluppato i loro libri e l’approccio didattico che li caratterizza.
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10

Komolafe, Olufemi O. "High-speed optical packet switching over arbitrary physical topologies using the Manhattan Street Network." Thesis, University of Strathclyde, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366847.

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Книги з теми ""street physics""

1

The physics of Wall Street: A brief history of predicting the unpredictable. Boston: Houghton Mifflin Harcourt, 2013.

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2

P, Chrousos George, Loriaux D. Lynn, Gold Philip W. 1944-, and National Institutes of Health (U.S.), eds. Mechanisms of physical and emotional stress. New York: Plenum Press, 1988.

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3

NATO Advanced Research Workshop on "Chemistry and Physics of Fracture" (1986 Bad Reichenhall, Germany). Chemistry and physics of fracture. Dordrecht: M. Nijhoff, 1987.

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4

Galloway, Jeff. Return of the tribes to Peachtree Street. Atlanta, GA: Phidippides Publication, 1995.

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5

Ann, Peters, ed. Breathe easier. London: Island Books, 2003.

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6

Shkola-seminar NPK "Germes i K "̊ (1993 Voronezh, Russia). Relaksat͡s︡ionnye i͡a︡vlenii͡a︡ v tverdykh telakh: Tezisy dokladov shkoly-seminara 23-26 fevrali͡a︡ 1993 g. g. Voronezh. Voronezh: Voronezhskiĭ politekhn. in-t, 1993.

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7

Parikh, Tanvi. Analysis of streets: A socio-physical perspective. Ahmedabad: School of Architecture, Centre for Environmental Planning and Technology, 1998.

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8

Zellnik, Miriam. Instant aromatherapy: With 5 scratch & sniff scents. Philadelphia: Quirk Books, 2003.

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9

S, Sanditov D., and Chimitdorzhiev D. B, eds. Relaksat͡s︡ionnye prot͡s︡essy v stekloobraznykh sistemakh. Novosibirsk: Izd-vo "Nauka," Sibirskoe otd-nie, 1986.

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10

Instant aromatherapy: With 5 scratch & sniff scents. Philadelphia: Quirk Books, 2003.

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Частини книг з теми ""street physics""

1

Mastrokalos, Marios E., Christos I. Papadopoulos, and Lambros Kaiktsis. "Optimal Cancelation of Vortex Street in Flow Past a Circular Cylinder with Controllable Wettability Properties." In Springer Proceedings in Physics, 171–80. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30602-5_22.

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Gunnoo, Hans, Nizar Abcha, Isabel Garcia-Hermosa, Anne-Claire Bennis, and Alexander Ezersky. "Influence of Surface Waves on Kármán Street Behind Vertical Cylinder: Subharmonic Lock-in and Phase Synchronizaton." In Springer Proceedings in Physics, 147–55. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30602-5_19.

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Chernov, V. V., P. L. Soustov, P. R. Gromov, A. B. Ezersky, and P. Paranthoen. "Vortex dynamics in a Karman street behind a heated cylinder: defects and potentialities of acoustic diagnostics." In Springer Proceedings in Physics, 297–300. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03085-7_72.

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Garrett, Steven L. "The Simple Harmonic Oscillator." In Understanding Acoustics, 59–131. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44787-8_2.

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Abstract This chapter will introduce a system that is fundamental to our understanding of more physical phenomena than any other. Although the “simple” harmonic oscillator seems to be only the combination of the most mundane components, the formalism developed to explain the behavior of a mass, spring, and damper is used to describe systems that range in size from atoms to oceans. Our investigation goes beyond the “traditional” treatments found in the elementary physics textbooks. For example, the introduction of damping will open a two-way street: a damping element (i.e., a mechanical resistance, Rm) will dissipate the oscillator’s energy, reducing the amplitudes of successive oscillations, but it will also connect the oscillator to the surrounding environment that will return thermal energy to the oscillator. The excitation of a harmonic oscillator by an externally applied force, displacement, or combination of the two will result in a response that is critically dependent upon the relationship between the frequency of excitation and the natural frequency of the oscillator and will introduce the critical concepts of mechanical impedance, resonance, and quality factor. Finally, the harmonic oscillator model will be extended to coupled oscillators that are represented by combinations of several masses and several springs.
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Noordam, L. D., M. Drabbels, and C. W. Rella. "Infrared streak camera." In Springer Series in Chemical Physics, 97–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-72289-9_29.

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Zang, Arno, and Ove Stephansson. "Physics of Stress Measurements." In Stress Field of the Earth’s Crust, 115–29. Dordrecht: Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-1-4020-8444-7_6.

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Koslowsky, Meni, Avraham N. Kluger, and Mordechai Reich. "Commuting and Physical Symptoms." In Commuting Stress, 61–77. Boston, MA: Springer US, 1995. http://dx.doi.org/10.1007/978-1-4757-9765-7_4.

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Bernhard, H. Christian. "Physical Movement." In Managing Stress in Music Education, 19–28. New York: Routledge, 2020. | Series: Routledge new directions in music education series: Routledge, 2020. http://dx.doi.org/10.4324/9781003003366-3.

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Patel, Chandra. "Physical Relaxation." In The Complete Guide to Stress Management, 163–91. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-6335-2_11.

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Noordam, L. D., and G. M. Lankhuijzen. "Atomic Streak Camera Probing of Wave Packet Decay Plus a FIR Streak Camera Concept." In Springer Series in Chemical Physics, 149–51. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-80314-7_63.

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Тези доповідей конференцій з теми ""street physics""

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Manickathan, Lento, Aytaç Kubilay, Thijs Defraeye, Jonas Allegrini, Dominique Derome, and Jan Carmeliet. "Integrated vegetation model for studying the cooling potential of trees in urban street canyons." In 7th International Building Physics Conference. Syracuse, New York: International Association of Building Physics (IABP), 2018. http://dx.doi.org/10.14305/ibpc.2018.gb-2.03.

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Kubilay, Aytaç, Jan Carmeliet, and Dominique Derome. "Using rain and vegetation to improve thermal comfort in a hot street canyon with fully-integrated urban climate modeling." In 7th International Building Physics Conference. Syracuse, New York: International Association of Building Physics (IABP), 2018. http://dx.doi.org/10.14305/ibpc.2018.gb-2.06.

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Starchenko, Alexander V., and Evgeniy A. Danilkin. "Large eddy simulation of turbulent flow and of pollutant transport in a street canyon." In XXI International Symposium Atmospheric and Ocean Optics. Atmospheric Physics, edited by Oleg A. Romanovskii. SPIE, 2015. http://dx.doi.org/10.1117/12.2205490.

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Danilkin, Evgeniy A., Alexander V. Starchenko, and Dmitry V. Leschinsky. "Research of the influence of the street canyon geometry on the turbulent flow structure." In 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, edited by Gennadii G. Matvienko and Oleg A. Romanovskii. SPIE, 2020. http://dx.doi.org/10.1117/12.2575608.

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Leshchinskiy, Dmitry V., Evgeniy A. Danilkin, and Alexander V. Starchenko. "The effect of temperature inhomogeneity on the concentration of impurities in a street canyon." In 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, edited by Oleg A. Romanovskii and Gennadii G. Matvienko. SPIE, 2021. http://dx.doi.org/10.1117/12.2603384.

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Danilkin, Evgeniy, Lubov Grudovich, and Dmitry Leschinsky. "Development of mathematical model and numerical method for analysis of air mass movement in street canyon." In XXIII International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, edited by Oleg A. Romanovskii and Gennadii G. Matvienko. SPIE, 2017. http://dx.doi.org/10.1117/12.2288610.

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Zheng, Qinmin, and Md Mahbub Alam. "Flow Structures and Vortex Dynamics in the Wake of Three Tandem Prisms." In ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/fedsm2018-83127.

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A study of the flow around three tandem square prisms may provide us a better understanding of complicated flow physics related to multiple closely spaced structures. In this paper, a numerical investigation on the flow around three tandem prisms at Reynolds number Re = 150 is conducted for L/W = 1.2 ∼ 10.0, where L is the prism center-to-center spacing and W is the prism width. Four distinct flow regimes and their ranges are identified, viz., single bluff-body flow (L/W < 3.0), alternating reattachment flow (3.0 < L/W < 4.3), synchronized coshedding flow (4.3 < L/W < 7.3) and desynchronized coshedding flow (7.3 < L/W ≤ 10.0). The synchronized coshedding flow can be further subdivided into two regimes: single St flow (4.3 < L/W < 5.1) and dual St flow (5.1 < L/W < 7.3). A secondary vortex street following the primary vortex street is observed for the dual St flow and the desynchronized coshedding flow. The detailed physics of the evolution of the primary vortex street to the secondary is imparted. The inherent frequency associated with the secondary vortex street is smaller than that with the primary. The evolution process of the primary vortex street to the secondary leads to a tertiary frequency. The DMD (dynamic mode decomposition) analysis for the first time is proposed as a useful and quantitative tool to identify the secondary vortex street and its onset position.
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Canbay, Canan Aksu, İskender Özkul, and Ece Kalay. "Investigation of stress effect on shape memory alloys." In TURKISH PHYSICAL SOCIETY 35TH INTERNATIONAL PHYSICS CONGRESS (TPS35). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5135436.

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Rodio, Jeffrey, Xudong Xiao, and Hassan A. Hassan. "A physics-Based Stress Model." In 53rd AIAA Aerospace Sciences Meeting. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2015. http://dx.doi.org/10.2514/6.2015-0590.

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Weiss, Abdullah G., M. Gomaa Abdoelatef, Mohammad T. H. Bani Ahmad, Karim Ahmed, and Mark L. Kimber. "A Preliminary Evaluation of the Computational Fluid Dynamics Capabilities in MOOSE." In 2021 28th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/icone28-64908.

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Abstract The Multiphysics Object Oriented Simulation Environment (MOOSE) is a code package that couples a variety of physics modules, allowing for highly accessible multiphysics simulations. The physics modules include a finite-element Navier-Stokes (N-S) module that is designed to solve laminar fluid dynamics problems. The usage of this module in multiple recent studies coupled with the growing interest in MOOSE for usage in non-LWR safety studies by the Nuclear Regulatory Commission (NRC) prompted the authors to investigate the computational fluid dynamics (CFD) capabilities of MOOSE. A 2D flow past a round cylinder scenario is simulated in the MOOSE environment to investigate the effectiveness of the N-S module. The simulation assumed an unsteady laminar flow with a Reynolds number of 200, where the unsteadiness in the vortex street is captured using a Euler-implicit time-integration scheme. To verify the results from MOOSE, a similar simulation is conducted using the well-utilized OpenFOAM finite volume code, and the velocity profiles of both transient simulations are compared. Grid and input sensitivity studies are conducted in MOOSE to quantify the numerical and input errors, respectively. The numerical and input errors are also visualized with contour plots in order to qualitatively understand the evolution of the errors across time and space. Results show that MOOSE struggles with capturing the instabilities in the flow, as it takes more than 20 seconds before a vortex street is observed. Excellent agreement in the velocities is seen between MOOSE and OpenFOAM upstream of the cylinder, but huge discrepancies can be seen where instabilities are expected around the cylinder and upstream of it. The discrepancies become more severe as the transient simulations progress in time. The numerical error is most prominent in the wake of the cylinder and around the boundaries of the channel. The input errors are also prominent in the wake but are most prominent around the cylinder walls. The results demonstrate the difficulties faced by the N-S module in MOOSE when it comes to simulating unsteady flow and prompts questions about the effectiveness of finite element CFD solvers.
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Звіти організацій з теми ""street physics""

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Schlossberg, Marc, Rebecca Lewis, Aliza Whalen, Clare Haley, Danielle Lewis, Natalie Kataoka, and John Larson-Friend. Rethinking Streets for Physical Distancing. Transportation Research and Education Center (TREC), 2021. http://dx.doi.org/10.15760/trec.257.

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This report summarizes the primary output of this project, a book of COVID-era street reconfiguration case studies called Rethinking Streets During COVID-19: An Evidence-Based Guide to 25 Quick Redesigns for Physical Distancing, Public Use, and Spatial Equity. COVID-era needs have accelerated the process that many communities use to make street transformations due to: a need to remain physically distanced from others outside our immediate household; a need for more outdoor space close to home in every part of every community to access and enjoy; a need for more space to provide efficient mobility for essential workers in particular; and a need for more space for local businesses as they try to remain open safely. This project is the third in a series of NITC-supported case study books on best practices in street reconfigurations for more active, sustainable, and in this case, COVID-supportive uses. The full, 154-page book is available for free download from the National Institute for Transportation and Communities (NITC).
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Wajsowicz, Roxana C. The Dynamics and Physics of Multiple Strait Systems. Fort Belvoir, VA: Defense Technical Information Center, September 2001. http://dx.doi.org/10.21236/ada623847.

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Manktelow, Kevin, and Lauren L. Beghini. Development of a Multi-physics Capability for Predicting Residual Stress in a GTS Reservoir. Office of Scientific and Technical Information (OSTI), September 2016. http://dx.doi.org/10.2172/1601326.

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Kramer, Robert. LED Street Lighting Implementation Research, Support, and Testing. Purdue University, 2020. http://dx.doi.org/10.5703/1288284317274.

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This report describes the results of technical analysis, field tests, and laboratory tests that were performed for LED highway lighting options by the Energy Efficiency and Reliability Center (EERC) at Purdue University Northwest for the Indiana Department of Transportation (INDOT). This effort was conducted over the past 3 years to evaluate and test the technology and viability of using modern highway lighting technology to enhance energy efficiency, safety, security, and economic development of communities and roadways. During the testing period there was a continuous discussion between INDOT and EERC regarding the laboratory and field testing of INDOT approved luminaires submitted by vendors. There were multiple discussions with INDOT and vendors regarding the individual details and issues for the 29 luminaires that were tested. A comparison study was conducted by EERC of the various alternatives and comparison to currently installed luminaires. Data was collected for field tests of the luminaires by EERC and INDOT personnel for the luminaires. Field data was evaluated and compared to lighting models using vendor supplied ies data files. Multiple presentations were made at 3 separate Purdue Road Schools regarding the results and procedures of the testing program by EERC in conjunction with INDOT. A total of 22 final reports, considered confidential by INDOT, for individual vendor luminaires have been prepared as part of this effort. These reports were submitted sequentially to INDOT as testing was completed during the course of this effort. A total of 29 luminaires were tested. Some luminaire testing was terminated during testing due to design issues or vendor requests. All testing was summarized in the INDOT specification sheet attached to each report. Observations regarding the consistency of the supplied test luminaire with the requirements of Section 7.2 of the INDOT test procedure “Procedure for evaluation and approval list requirements for solid state ballasted luminaires ITM 957-17P” is provided in the Appendix to the report for each luminaire. Details regarding how these tests were performed and the respective associated evaluation of performance and reliability are provided in the report. This effort included: consideration of published and vendor information; appraisal of products consistent with national industry standards; review of physical design, thermal performance; laboratory testing of photopic performance, reliability, life cycle data and characteristics, and power characteristics; technical and probabilistic risk studies; and field testing and analysis of LED light sources including comparison to currently installed conventional light sources. Assistance in preparing INDOT standards for highway lighting was provided on multiple occasions.
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Unwin, Stephen D., Peter P. Lowry, Robert F. Layton, Mychailo B. Toloczko, Kenneth I. Johnson, and Scott E. Sanborn. Physics-Based Stress Corrosion Cracking Component Reliability Model cast in an R7-Compatible Cumulative Damage Framework. Office of Scientific and Technical Information (OSTI), July 2011. http://dx.doi.org/10.2172/1024549.

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Blake, H. Stress analysis of the Princeton Plasma Physics Laboratory 1/2- times 1/2-in. shear/compression test fixture. Office of Scientific and Technical Information (OSTI), October 1989. http://dx.doi.org/10.2172/5244225.

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Hatch, Maureen C. Cardiovascular Responsivity, Physical and Psychosocial Job Stress, and the Risk of Preterm Delivery. Fort Belvoir, VA: Defense Technical Information Center, October 1999. http://dx.doi.org/10.21236/ada383209.

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Jones, Burton H., and Emmanuel Boss. Bio-Optical Response and Coupling with Physical Processes in the Lombok Strait Region. Fort Belvoir, VA: Defense Technical Information Center, September 2008. http://dx.doi.org/10.21236/ada533503.

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Hatch, Maureen C. Cardiovascular Responsivity, Physical and Psychosocial Job Stress, and the Risk of Preterm Delivery. Fort Belvoir, VA: Defense Technical Information Center, December 2001. http://dx.doi.org/10.21236/ada407704.

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Jones, Burton H., and Emmanuel Boss. Bio-Optical Response and Coupling with Physical Processes in the Lombok Strait Region. Fort Belvoir, VA: Defense Technical Information Center, September 2007. http://dx.doi.org/10.21236/ada572619.

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