Academic literature on the topic 'Exit times'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Exit times.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Exit times"

1

Koski, Timo, Brita Jung, and Göran Högnäs. "Exit times for ARMA processes." Advances in Applied Probability 50, A (2018): 191–95. http://dx.doi.org/10.1017/apr.2018.79.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Alabert, Aureli, Mercè Farré, and Rahul Roy. "Exit Times from Equilateral Triangles." Applied Mathematics and Optimization 49, no. 1 (2003): 43–53. http://dx.doi.org/10.1007/s00245-003-0779-1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Burchard, A., and M. Schmuckenschläger. "Comparison theorems for exit times." Geometric and Functional Analysis 11, no. 4 (2001): 651–92. http://dx.doi.org/10.1007/pl00001681.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Nemes, Judith. "Despite hard times, exit strategies exist for retirement-minded practice owners." Hearing Journal 62, no. 2 (2009): 19–23. http://dx.doi.org/10.1097/01.hj.0000345990.49668.4f.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

O'Connell, Neil, and Antony Unwin. "Collision times and exit times from cones: a duality." Stochastic Processes and their Applications 43, no. 2 (1992): 291–301. http://dx.doi.org/10.1016/0304-4149(92)90063-v.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Hadeler, Karl-Peter, and Frithjof Lutscher. "Quiescent phases with distributed exit times." Discrete & Continuous Dynamical Systems - B 17, no. 3 (2012): 849–69. http://dx.doi.org/10.3934/dcdsb.2012.17.849.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Borell, Christer. "Minkowski sums and Brownian exit times." Annales de la faculté des sciences de Toulouse Mathématiques 16, no. 1 (2007): 37–47. http://dx.doi.org/10.5802/afst.1137.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Jung, Brita. "Exit times for multivariate autoregressive processes." Stochastic Processes and their Applications 123, no. 8 (2013): 3052–63. http://dx.doi.org/10.1016/j.spa.2013.03.003.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Doney, R. A. "Last exit times for random walks." Stochastic Processes and their Applications 31, no. 2 (1989): 321–31. http://dx.doi.org/10.1016/0304-4149(89)90096-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Denisov, Denis, and Vitali Wachtel. "Exit times for integrated random walks." Annales de l'Institut Henri Poincaré, Probabilités et Statistiques 51, no. 1 (2015): 167–93. http://dx.doi.org/10.1214/13-aihp577.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Exit times"

1

Meinecke, Lina. "Stochastic Simulation of Multiscale Reaction-Diffusion Models via First Exit Times." Doctoral thesis, Uppsala universitet, Avdelningen för beräkningsvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-284085.

Full text
Abstract:
Mathematical models are important tools in systems biology, since the regulatory networks in biological cells are too complicated to understand by biological experiments alone. Analytical solutions can be derived only for the simplest models and numerical simulations are necessary in most cases to evaluate the models and their properties and to compare them with measured data. This thesis focuses on the mesoscopic simulation level, which captures both, space dependent behavior by diffusion and the inherent stochasticity of cellular systems. Space is partitioned into compartments by a mesh and
APA, Harvard, Vancouver, ISO, and other styles
2

Ahammer, Alexander, and Stefan Kranzinger. "Poverty in Times of Crisis." WU Vienna University of Economics and Business, 2017. http://epub.wu.ac.at/5444/1/WP_Poverty_in_Times_of_Crisis.pdf.

Full text
Abstract:
This paper evaluates the impact of a large macroeconomic shock on poverty. In particular, we use longitudinal data from the European Survey on Income and Living Conditions (EU-SILC) comprising almost two million individuals from 29 European countries in order to quantify changes in poverty transition patterns caused by the 2007 global financial crisis. Because the crisis was largely unforeseeable, it provides an appealing natural experiment allowing us to isolate the causal effect of a substantial macroeconomic shock on poverty. Employing semiparametric mixed discrete time survival analysis, w
APA, Harvard, Vancouver, ISO, and other styles
3

Roj, Mikolaj. "Mean exit times and multi-level Monte Carlo with applications in finance." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=20312.

Full text
Abstract:
This thesis is focused broadly on the stopped exit time problem in the stochastic differential equations setting. It currently appears that one of the most efficient and powerful approaches to solve this problem (especially in higher dimensions for which there are no explicit formulae) is the simulation of sample paths of time discrete approximations. We compute the mean exit time using a Monte Carlo technique, which has the advantage of being straightforward to implement. However, controlling the Monte Carlo sampling error and large biases in the numerical method make this method computationa
APA, Harvard, Vancouver, ISO, and other styles
4

Peithmann, Dierk. "Large deviations and exit time asymptotics for diffusions and stochastic resonance." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2007. http://dx.doi.org/10.18452/15696.

Full text
Abstract:
Diese Arbeit behandelt die Asymptotik von Austritts- und Übergangszeiten für gewisse schwach zeitinhomogene Diffusionsprozesse. Darauf basierend wird ein probabilistischer Begriff der stochastischen Resonanz (SR) studiert. Techniken der großen Abweichungen spielen eine zentrale Rolle. Im ersten Teil der Arbeit (Kapitel 1-3) werden Resultate aus der Theorie der großen Abweichungen für zeithomogene Diffusionen rekapituliert. Es werden die klassischen Resultate von Freidlin und Wentzell und Erweiterungen dieser Theorie präsentiert, und es wird an das Kramers''sche Austrittszeitengesetz
APA, Harvard, Vancouver, ISO, and other styles
5

Hieber, Peter [Verfasser], Matthias [Akademischer Betreuer] Scherer, Hansjörg [Akademischer Betreuer] Albrecher, and Marcos [Akademischer Betreuer] Escobar. "First-exit times and their applications in default risk management / Peter Hieber. Gutachter: Hansjörg Albrecher ; Matthias Scherer ; Marcos Escobar. Betreuer: Matthias Scherer." München : Universitätsbibliothek der TU München, 2013. http://d-nb.info/1044395869/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Teeny, Nicolas [Verfasser], and Christoph H. [Akademischer Betreuer] Keitel. "Tunneling Time, Exit Time and Exit Momentum in Strong Field Tunnel Ionization / Nicolas Teeny ; Betreuer: Christoph H. Keitel." Heidelberg : Universitätsbibliothek Heidelberg, 2016. http://d-nb.info/1180736109/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Jiao, Chunxi. "Semidefinite relaxations for a linear programming approach to exit-time stochastic control." Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/24569.

Full text
Abstract:
In this thesis, we investigate the linear programming framework for exit-time stochastic control problems and apply the moment-sum-of-squares (moment-SOS) hierarchy to obtain convergent pointwise bounds and global bounding functions for the value functions. The primal linear program over suitable measures and the dual linear program over continuous test functions are implemented numerically by semidefinite programs which target moments and SOS polynomial representations respectively. Numerically optimised bounds converge to the value function from below as polynomial degree increases under sui
APA, Harvard, Vancouver, ISO, and other styles
8

Rupassara, Rupassarage Upul Hemakumara. "Joint exit time and place distribution for Brownian motion on Riemannian manifolds." OpenSIUC, 2019. https://opensiuc.lib.siu.edu/dissertations/1720.

Full text
Abstract:
This dissertation discusses the time and place that Brownian motion on a Riemannian manifold first exit a normal ball of small radius. A general procedure is given for computing asymptotic expansions of joint moments of the first exit time and place random variables as the radius of the geodesic ball decreases to zero. The asymptotic expansion of the joint Laplace transform of exit time and spherical harmonics of exit position is derived for a ball of small radius. A generalized Pizetti’s formula is used to expand the solution of the related partial differential equations. These expansions are
APA, Harvard, Vancouver, ISO, and other styles
9

De, Oliveira Gomes André. "Large Deviations Studies for Small Noise Limits of Dynamical Systems Perturbed by Lévy Processes." Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19118.

Full text
Abstract:
Die vorliegende Dissertation beschäftigt sich mit der Anwendung der Theorie der großen Abweichungen auf verschiedene Fragestellungen der stochastischen Analysis und stochastischen Dynamik von Sprungprozessen. Die erste Fragestellung behandelt die erste Austrittszeit aus einem beschränkten Gebiet für eine bestimmte Klasse von Sprungdiffusionen mit exponentiell leichten Sprüngen. In Abhängigkeit von der Leichtheit des Sprungmaßes wird das asymptotische Verhalten der Verteilung und insbesondere der Erwartung der ersten Austrittszeit bestimmt wenn das Rauschen verschwindet. Dabei folgt die
APA, Harvard, Vancouver, ISO, and other styles
10

Raikes, Geoff. "Temperature reconstruction and acoustic time of flight determination for boiler furnace exit temperature measurement." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29516.

Full text
Abstract:
The furnace exit gas temperature (FEGT) is one of the fundamental parameters necessary to determine the energy balance of the boiler in a coal-fired power plant, and is thus beneficial to the production of reliable thermo-fluid models of its operation and the operation of the systems down and upstream. The continuous measurement of the FEGT would also be a useful indicator to predict, prevent and diagnose faults, optimize boiler operation and aid the design of heat transfer surfaces. Acoustic pyrometry, a technique that measures temperature based on the travel time of an acoustic wave in a gas
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Exit times"

1

Aubyn, Edward St. A clue to the exit. Chatto & Windus, 2000.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Welter, John. Begin to exit here: A novel of the wayward press. Algonquin Press of Chapel Hill, 1992.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Exit into history: A journey through the new Eastern Europe. Viking, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Orizu, GCON Committee for the Final Rites of Dr A. A. Nwafor. Exit of the last titan: Lives and times of Rt. Hon. Dr. Prince A.A. Nwafor Orizu. Pearl Functions Limited, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Buddelmeyer, Hielke. Part-time work in EU countries: Labour market mobility, entry and exit. IZA, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Why does the world exist?: An existential detective story. Liveright Pub. Corp., 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Letter to a man in the fire: Does God exist and does He care? Scribner, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Küng, Hans. Does God exist?: An answer for today. Crossroad, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Küng, Hans. Does God exist?: An answer for today. SCM Press, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Küng, Hans. Does God exist?: An answer for today. Xpress Reprints, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Exit times"

1

Debussche, Arnaud, Michael Högele, and Peter Imkeller. "Asymptotic Exit Times." In Lecture Notes in Mathematics. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00828-8_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Álvarez López, Jesús Antonio, and Alberto Candel. "Some Examples of First Exit Times." In Studies in Systems, Decision and Control. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73848-2_72.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Glover, Joseph, and Ming Liao. "Mean Exit Times of Markov Processes." In Seminar on Stochastic Processes, 1984. Birkhäuser Boston, 1986. http://dx.doi.org/10.1007/978-1-4684-6745-1_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Kaspi, Haya, and Bernard Maisonneuve. "Predictable local times and exit systems." In Séminaire de Probabilités XX 1984/85. Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/bfb0075715.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Davis, Burgess, and Renming Song. "Weak Inequalities for Exit Times and Analytic Functions." In Selected Works of Donald L. Burkholder. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-7245-3_21.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Sauvageot, Jean-Luc. "First exit time: A theory of stopping times in quantum processes." In Quantum Probability and Applications III. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/bfb0078070.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Choulli, Tahir, Junfeng Ma, and Marie-Amélie Morlais. "Three Essays on Exponential Hedging with Variable Exit Times." In Inspired by Finance. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-02069-3_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

von Sydow, Göran. "Trust and Crises in the EU: Exit, Voice and Loyalty." In Trust in the European Union in Challenging Times. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-73857-4_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Davis, Burgess, and Renming Song. "Exit Times of Brownian Motion, Harmonic Majorization, and Hardy Spaces." In Selected Works of Donald L. Burkholder. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-7245-3_18.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Frikha, Noufel, Arturo Kohatsu-Higa, and Libo Li. "Integration by Parts Formula for Exit Times of One Dimensional Diffusions." In Kolmogorov Operators and Their Applications. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-0225-1_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Exit times"

1

Poloczek, Felix, and Florin Ciucu. "Coding of Brownian motion by quantization of exit times." In 2012 50th Annual Allerton Conference on Communication, Control, and Computing (Allerton). IEEE, 2012. http://dx.doi.org/10.1109/allerton.2012.6483267.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Mazzanti, V., and F. Mollica. "Exit effects in the wall slip of polymeric concentrated suspensions." In 9TH INTERNATIONAL CONFERENCE ON “TIMES OF POLYMERS AND COMPOSITES”: From Aerospace to Nanotechnology. Author(s), 2018. http://dx.doi.org/10.1063/1.5045954.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Chuanju Wu. "Moments of last exit times for Ornstein-Uhlenbeck type Markov processes." In 2011 International Conference on Information Science and Technology (ICIST). IEEE, 2011. http://dx.doi.org/10.1109/icist.2011.5765071.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

He, Jingmin, and Wei Zhang. "The exit times for the diffusion risk model with constant interest." In 2nd International Conference on Electronics, Network and Computer Engineering (ICENCE 2016). Atlantis Press, 2016. http://dx.doi.org/10.2991/icence-16.2016.2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Higham, Desmond J., and Mikolaj Roj. "Computing mean first exit times for stochastic processes using multi-level Monte Carlo." In 2012 Winter Simulation Conference - (WSC 2012). IEEE, 2012. http://dx.doi.org/10.1109/wsc.2012.6465219.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Guidry, Christopher Wayne, Charles Pleasants, and Joseph Sheehan. "Merging Multilateral & Casing Exit Technologies to Increase Wellbore Junction Reliability by Reducing Rig & Openhole Exposure Times." In SPE/IADC Drilling Conference and Exhibition. Society of Petroleum Engineers, 2011. http://dx.doi.org/10.2118/140274-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Emelander, Tom. "Efficient and Consistent Sidetracking Operations Lower Production Costs While Minimizing Footprint in Shallow Re-Entry Wells." In SPE Western Regional Meeting. SPE, 2022. http://dx.doi.org/10.2118/209318-ms.

Full text
Abstract:
Abstract In California, re-entry projects to sidetrack existing wells are a common method of accessing reserves while avoiding the process of obtaining permits for drilling new wells. Utilizing existing assets reduces the cost associated with surface footprints and partial well construction and lowers environmental impact. Recent improvements in consistency and efficiency during casing exit operations have enabled operators to minimize spend and well construction time, which makes these sidetracks more economical. The majority of offshore and onshore re-entry wells in California require that c
APA, Harvard, Vancouver, ISO, and other styles
8

Gori, F., and I. Petracci. "Fluid Dynamics Measurements and Numerical Simulations Around a Circular Cylinder Impinged by a Submerged Slot Jet of Air." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41025.

Full text
Abstract:
Submerged slot jets of air, impinging onto a cylinder, have been investigated with a new wind tunnel, which realizes low turbulence intensities at the slot exit. The hot anemometry has been used to measure velocity and turbulence across the section of the jet, at several distances from the slot exit, up to the impinged cylinder. The cylinder has been set at two distances from the slot exit, equal to 4 and 6 times the slot height. The Reynolds number of the jet is equal to 23,300, based on the hydraulic diameter of the slot.
APA, Harvard, Vancouver, ISO, and other styles
9

Chin, S. N., B. Gerrits, and B. Colboume. "Design and Experimental Verification of an Exit Manifold for Improved Current Generation in an Offshore Engineering Basin." In SNAME 26th American Towing Tank Conference. SNAME, 2001. http://dx.doi.org/10.5957/attc-2001-014.

Full text
Abstract:
Current is generated at the National Research Council's Institute for Marine Dynamics, Offshore Engineering Basin (OEB) in St. John's, Newfoundland, using a pump thruster system in which flow is conveyed under a false floor and returns through the test section of basin. The objectives of this project were to quantify and assess the performance of the existing current generation system and to experimentally verify a design exit manifold for improved current generation. At present, current operation results in large-scale vertical vortices being produced at the current exit end of the basin wher
APA, Harvard, Vancouver, ISO, and other styles
10

Mirmohammadsadeghi, Navid, and Antonio Trani. "Enhancements to the Runway Exit Design Interactive Model Using a Hybrid Simulation Approach for Estimating Runway Occupancy Times at Airports." In AIAA Scitech 2020 Forum. American Institute of Aeronautics and Astronautics, 2020. http://dx.doi.org/10.2514/6.2020-1403.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Exit times"

1

Monge-González, Ricardo, and Federico Torres-Carballo. The Dynamics of Entrepreneurship in Costa Rica: An Analysis of Firm Entry, Exit, and Growth Rates. Inter-American Development Bank, 2015. http://dx.doi.org/10.18235/0006994.

Full text
Abstract:
This study explores for the first time the dynamics of entrepreneurship in Costa Rica based on an analysis of firm entry, exit, and growth rates. Using panel data from 2001 to 2012, it explores the extent to which the growth rates of firms are independent of firm size (Gibrat's law), controlling for age and other possible determinants of growth rates. It also analyzes the question of whether Costa Rica is suffering from the missing middle phenomenon. In addition, it explores the questions of which firms are generating more jobs and which companies show high and sustained growth rates (gazelles
APA, Harvard, Vancouver, ISO, and other styles
2

Meisk, Maline, and Andrea Ruggeri. What is the State of the State when UN Peacekeeping Operations Leave? Folke Bernadotte Academy, 2024. http://dx.doi.org/10.61880/aaqk9053.

Full text
Abstract:
What are the state-building legacies of United Nations' peacekeeping operations (UN PKOs) after their exit? In our research, we analysed whether the closure of UN PKOs impacts the host state's capacity and whether states that have hosted UN PKOs manage to perform state functions after PKO exit. Our findings show that while many state capacity-related indicators improve during UN PKO deployment, UN PKO withdrawal can have both negative and positive correlations for state-building outcomes; depending on the indicator, the time period, and the country under scrutiny. Furthermore, for a transition
APA, Harvard, Vancouver, ISO, and other styles
3

Schad, Aaron, Gary Dick, Kris Erickson, Paul Fuhrmann, and Lynde Dodd. Vegetation community changes in response to phragmites management at Times Beach, Buffalo, New York. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42149.

Full text
Abstract:
Management of invasive phragmites (Phragmites australis [Cav.] Trin. Ex Steud.) in the United States has proven challenging over the last several decades. Various methods for control exist, but integrated approaches appear to have the most success. However, documentation of vegetation community–wide responses to these approaches remains limited. This study monitored plant community changes at Times Beach, New York, over a five-year period. In concert with mowing and thatch removal in all areas, the study evaluated two herbicides separately and together, representing three experimental treatmen
APA, Harvard, Vancouver, ISO, and other styles
4

Bonvecchi, Alejandro, Ernesto Calvo, Susana Otálvaro-Ramírez, and Carlos Scartascini. Research Insights: Can a Crisis Reduce Trust in the President to the Point that Citizens Do Not Accept Fiscal Reforms or Economic Sacrifices Intended to Overcome It? Inter-American Development Bank, 2023. http://dx.doi.org/10.18235/0004950.

Full text
Abstract:
Survey data for Argentina and Uruguay do not show a decline in trust in the president among those whose health was compromised by COVID-19. Over time, trust in the president increased in Uruguay and declined in Argentina among the population at large. Evidence on support for greater economic sacrifices was mixed. Compared to the population in general, those whose health or that of their loved ones was affected by the virus showed more support for the economic sacrifices necessary to exit the pandemic.
APA, Harvard, Vancouver, ISO, and other styles
5

Wøien Meijer, Mari, and Alberto Giacometti. Nordic border communities in the time of COVID-19. Nordregio, 2021. http://dx.doi.org/10.6027/pb2021:3.2001-3876.

Full text
Abstract:
Re-building cross-border collaboration will be vital after the COVID-19 crisis to secure resilient border communities and Nordic collaboration. The measures to limit the spread of the COVID-19 virus were disproportionally damaging for border communities. Healing the wounds inflicted on society, business and institutions demand coordinated actions at local, national, and Nordic levels. This policy brief gives a brief overview of the impact of border restrictions on border communities during the first nine months of the COVID-19 pandemic. The social and economic implications of closed borders ha
APA, Harvard, Vancouver, ISO, and other styles
6

Kurmann, André, Étienne Lalé, and Lien Ta. Measuring Small Business Dynamics and Employment with Private-Sector Real-Time Data. CIRANO, 2022. http://dx.doi.org/10.54932/xsph3669.

Full text
Abstract:
The COVID-19 pandemic has led to an explosion of research using private-sector datasets to measure business dynamics and employment in real-time. Yet questions remain about the representativeness of these datasets and how to distinguish business openings and closings from sample churn – i.e., sample entry of already operating businesses and sample exits of businesses that continue operating. This paper proposes new methods to address these issues and applies them to the case of Homebase, a real-time dataset of mostly small service-sector sector businesses that has been used extensively in the
APA, Harvard, Vancouver, ISO, and other styles
7

Baader, Franz. The instance problem and the most specific concept in the description logic EL w.r.t. terminological cycles with descriptive semantics. Technische Universität Dresden, 2003. http://dx.doi.org/10.25368/2022.126.

Full text
Abstract:
In two previous reports we have investigated both standard and non-standard inferences in the presence of terminological cycles for the description logic EL, which allows for conjunctions, existential restrictions, and the top concept. Regarding standard inference problems, it was shown there that the subsumption problem remains polynomial for all three types of semantics usually considered for cyclic definitions in description logics, and that the instance problem remains polynomial for greatest fixpoint semantics. Regarding non-standard inference problems, it was shown that, w.r.t. greatest
APA, Harvard, Vancouver, ISO, and other styles
8

Kiefner and Rosenfeld. I7JUMPH Effects of Pressure Cycles on Gas Pipelines. Pipeline Research Council International, Inc. (PRCI), 2008. http://dx.doi.org/10.55274/r0011287.

Full text
Abstract:
The objective of this study was to determine whether or not gas pipelines have a significant degree of exposure to failure from seam defects that could become enlarged by pressure-cycle-induced fatigue. If there is a potential problem in this respect, then knowing the conditions and times over which defect growth becomes significant, a pipeline operator can prevent failures by carrying out timely pipeline integrity assessments. In this study, times to failure were computed for worst-case hypothetical seam defects that would have barely survived a hydrostatic test to 100 percent of SMYS and sub
APA, Harvard, Vancouver, ISO, and other styles
9

Audoly, Richard. Firm Dynamics and Random Search over the Business Cycle. Federal Reserve Bank of New York, 2023. http://dx.doi.org/10.59576/sr.1069.

Full text
Abstract:
I build a tractable random search model with firm dynamics, on-the-job search, and aggregate shocks. Multi-worker firms make recruitment decisions, choose whether to enter or exit the market, and design wage contracts. Tractability is obtained by showing that, under a set of assumptions on the recruitment technology, the decisions of workers and firms can be expressed in terms of the firms’ current productivity. I introduce a numerical solution method to accommodate aggregate shocks in this environment and show that the model can replicate salient features of both firm-level data on productivi
APA, Harvard, Vancouver, ISO, and other styles
10

Das and He. PR-015-143601-Z01 Drying Time of Residual Hydrotest Water in Crevices and Dead Legs. Pipeline Research Council International, Inc. (PRCI), 2015. http://dx.doi.org/10.55274/r0010852.

Full text
Abstract:
The objective of this project was to evaluate the effectiveness of the dewatering process after hydrotesting and to examine the internal corrosion threat posed by residual water trapped in crevices and water pushed into a dead leg. A "time to dry" calculation for both cases was conducted based on pipeline operating conditions. Analysis of the evaporation of water trapped in crevices indicated that maintaining low pressures and high temperatures are the most effective measures for drying the trapped water. At the lowest pressure of 14.7 psi and at 100 �F, trapped water can be dried in days. At
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!