Academic literature on the topic 'Drift calculation'

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Journal articles on the topic "Drift calculation"

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Kui, Dai. "Research of Short-Leg Shear Wall Structure System Function in Multiple Coupled Field." Advanced Materials Research 594-597 (November 2012): 2464–69. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.2464.

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Calculation of Short-leg shear walls structural system is a multi-field coupling problem. Through the research and application of short-leg shear wall structure calculation theory, based on the national codes,the short-leg shear wall design principles are established.It is discussed for the reason of the world's first short-leg shear wall structure design formation and development research. According to short-leg shear wall force characteristics, horizonal displacement is divided into destructive story drift and harmless story drift, the formula for calculating the destructive story drift is obtained, using destructive story drift angle parameters and the change of main section height to control the deformation, to control structural rigidity to ensure the structural design rational purpose.
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Brady, F. Paul, and Juan L. Romero. "Calculation of diffusion in radial drift TPCs." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 333, no. 2-3 (September 1993): 312–15. http://dx.doi.org/10.1016/0168-9002(93)91171-i.

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Zherelo, Anatoly. "On Calculation of Means of SDE with Drift." Nonlinear Phenomena in Complex Systems 23, no. 3 (October 28, 2020): 299–305. http://dx.doi.org/10.33581/1561-4085-2020-23-3-299-305.

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The numerical method of approximate calculation of mean of a stochastic differential equation with a drift was constructed. The proposed method is based on the so called weak method of approximations and does not require simulations of trajectories of the solutions.
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Qin, Zhang Jian, Liang Quan Ge, Qi Fan Wu, and Jian Ping Cheng. "A New Algorithm for Spectral Drift Calculation in a Gamma-Ray Spectrometer." Advanced Materials Research 346 (September 2011): 705–10. http://dx.doi.org/10.4028/www.scientific.net/amr.346.705.

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Spectral drift of any origin consisting of detectors and nuclear electronics affects the long-term stability in a gamma-ray spectrometer, which is essential to maintaining the high quality of gamma energy spectra. The feedback regulation according to the quantity of spectral drift can restore the system’s stability. A new algorithm for spectral drift calculation is given in this paper. A digital logic unit is developed in a FPGA chip based on the algorithm, and a MCU coordinating with it can fast calculate the spectral drift within only less than 110 instruction periods.
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Wang, Qiu Wei, Qing Xuan Shi, and Peng Wang. "Theoretical Analysis Research on Story Drift Limit for Steel Rinforced Concrete Composite Structures." Applied Mechanics and Materials 275-277 (January 2013): 1123–26. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.1123.

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Steel reinforced concrete structures are organic combination of steel and concrete and the calculation formula of inter-story drift should be between them.The calculation formula of storey yield drift for reinforced concrete frames is obtained by adding the deformantion of beams, columns and joints, and the comparison shows that theoretical results agree with test data. Inter-story yield drift ratio for steel reinforced concrete (SRC) framees are proposed by using the same assumption and procedure, and story drift limit for SRC frames with certain assurance probability are proposed according to relationship of four seismic performance levels. The conclusion obtained provide reference for engineering design of SRC frame structures.
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Chambers, F. R. N., and A. L. Watts. "Relativistic ocean r-modes during type-I X-ray bursts." Monthly Notices of the Royal Astronomical Society 491, no. 4 (December 9, 2019): 6032–44. http://dx.doi.org/10.1093/mnras/stz3449.

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ABSTRACT Accreting neutron stars (NS) can exhibit high frequency modulations in their lightcurves during thermonuclear X-ray bursts, known as burst oscillations. These frequencies can be offset from the NS spin frequency by several Hz (where known independently) and can drift by 1–3 Hz. One plausible explanation is that a wave is present in the bursting ocean, the rotating frame frequency of which is the offset. The frequency of the wave should decrease (in the rotating frame) as the burst cools hence explaining the drift. A strong candidate is a buoyant r-mode. To date, models that calculated the frequency of this mode taking into account the radial structure neglected relativistic effects and predicted rotating frame frequencies of ∼4 Hz and frequency drifts of >5 Hz; too large to be consistent with observations. We present a calculation that includes frame-dragging and gravitational redshift that reduces the rotating frame frequency by up to $30 \, {\rm per\, cent}$ and frequency drift by up to $20 \, {\rm per\, cent}$. Updating previous models for the ocean cooling in the aftermath of the burst to a model more representative of detailed calculations of thermonuclear X-ray bursts reduces the frequency of the mode still further. This model, combined with relativistic effects, can reduce the rotating frequency of the mode to ∼2 Hz and frequency drift to ∼2 Hz, which is closer to the observed values.
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Alexanin, A. I., M. V. Stopkin, and V. A. Kachur. "Automatic Calculation of Ice Drift Based on AMSR Data." Izvestiya, Atmospheric and Oceanic Physics 53, no. 9 (December 2017): 1123–31. http://dx.doi.org/10.1134/s0001433817090389.

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Cai, Hao Ming, Zhong Tao, and Xin Li Cao. "Calculation and Analysis of a Tall Building Seismic Isolation Design." Applied Mechanics and Materials 353-356 (August 2013): 2177–80. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.2177.

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In this paper, we calculate and analyze a tall building project of seismic isolation design. It is a frame-shear wall structure, which has twelve stories on the ground. And then, we use the time history analysis method to calculate the isolation structure. It is found that isolation equipment can extend the period of the structure, reduce the story drift in frequency earthquake. And it also can control the response of the structure. In rare earthquake, the story drift can meet the demand of unclasped; the displacement and force of the equipment can satisfy the demand of the code for seismic design of building.
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Zhang, Gui Ming, Wen Feng Liu, and Zhi Hong Chen. "Seismic Displacement Design Method Comparison between Chinese, American, European and Japanese Seismic Design Codes." Advanced Materials Research 859 (December 2013): 43–47. http://dx.doi.org/10.4028/www.scientific.net/amr.859.43.

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Seismic displacement design method and allowable values of story drift are compared between Chinese, American, European and Japanese seismic design codes. An engineering example's seismic displacement is calculated in the methods given by the four codes, and story drift are compared. Researches show that allowable story drift of Chinese code under rare earthquake action is approximately close to that of American with a 10% probability of exceedance in 50 years, and allowable story drift of Japanese code is more rigorous than other three codes. For three-story three-span reinforced concrete frame structure, in the condition of same intensity, displacement of Chinese under the earthquake action with 2~3% exceeding probability of 50-year is greater than that of American and European with 10% exceeding probability of 50-year. However, intensity plays no role in Japan's displacement calculation, and the calculation result of displacement of Japanese code is less than other three codes.
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Maurer, M., H. J. Kaeppeler, and W. Richert. "Calculation of nonlinear drift instabilities in magneto-plasmadynamic thruster flows." Journal of Physics D: Applied Physics 28, no. 11 (November 14, 1995): 2269–78. http://dx.doi.org/10.1088/0022-3727/28/11/007.

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Dissertations / Theses on the topic "Drift calculation"

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Munkejord, Svend Tollak. "Analysis of the two-fluid model and the drift-flux model for numerical calculation of two-phase flow." Doctoral thesis, Norwegian University of Science and Technology, Faculty of Engineering Science and Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-679.

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Flerfasestrømning er av betydning i en lang rekke anvendelser, blant annet i olje- og gassindustrien, i den kjemiske og i prosessindustrien, inkludert i varmepumpende systemer, samt i sikkerhetsanalyse av kjernekraftverk. Denne avhandlingen analyserer modeller for tofasestrømning, og metoder for numerisk løsning av disse modellene. Den er derfor ett bidrag til å utvikle pålitelige ingeniørverktøy for flerfase-anvendelser. Slike verktøy trengs og forventes av ingeniører i industrien.

Den tilnærmede Riemann-løseren framsatt av Roe har blitt studert. Roe-skjema for tre ulike modeller for tofasestrømning har blitt implementert i rammen av en standard numerisk algoritme for løsning av hyperbolske bevaringslover. Disse skjemaene har blitt analysert ved hjelp av referanse-regnestykker fra litteraturen, og ved sammenlikning med hverandre.

Et Roe-skjema for den fire-liknings ettrykks tofluid-modellen har blitt implementert, og det har blitt vist at en andreordens utvidelse basert på bølge-dekomponering og fluksdifferanse-splitting virker godt, og gir forbedrede resultater sammenliknet med det førsteordens skjemaet.

Det har blitt foreslått et Roe-skjema for en fem-liknings totrykks tofluid-modell med trykkrelaksering. Bruken av analoge numeriske metoder for fire-liknings- og fem-liknings-modellene gjorde det mulig med en direkte sammenlikning av en metode med og uten trykkrelaksering. Numeriske eksperiment demonstrerte at de to framgangsmåtene konvergerte til samme resultat, men at den fem-liknings trykkrelakserings-metoden var betydelig mer dissipativ, særlig for kontakt-diskontinuiteter. Videre viste beregninger at selv om fem-liknings-modellen har reelle egenverdier, så produserte den oscillasjoner for tilfeller der fire-liknings-modellen hadde komplekse egenverdier.

Et Roe-skjema har blitt konstruert for driftfluks-modellen med generelle lukningslover. Roe-matrisen er helt analytisk for det tilfellet at man kan anvende Zuber-Findlay-slipp-loven som beskriver boblestrømning. Dermed er dette Roe-skjemaet mer effektivt enn tidligere fullt numeriske Roe-skjema for driftfluks-modellen.

En isentropisk diskret-nivå-flerfasemodell har blitt presentert. En diskusjon av hvordan man kan ta hensyn til ulike interfase-trykkmodeller har blitt gitt. Med de passende modellene for interfase-trykk og -fart, var samsvaret svært godt mellom diskret-nivå-modellen og det fem-liknings Roe-skjemaet.

Multi-steg- (MUSTA) metoden har som siktemål å komme nær oppstrøms-metodene i nøyaktighet, samtidig som den bevarer enkelheten til sentrerte skjema. Her har metoden blitt brukt på driftfluks-modellen. Når antallet steg økes, nærmer resultatene fra MUSTA-metoden seg det man får med Roe-metoden. De gode resultatene til MUSTA-metoden er avhengige av at man bruker et stort nok lokalt grid. Derfor er hovedfordelen med MUSTA-metoden at den er enkel, snarere enn at man sparer regnetid.

En karakteristikk-basert metode for å spesifisere grensebetinglser for flerfase-modeller har blitt testet, og funnet å virke godt for transiente problem.


This thesis analyses models for two-phase flows and methods for the numerical resolution of these models. It is therefore one contribution to the development of reliable design tools for multiphase applications. Such tools are needed and expected by engineers in a range of fields, including in the oil and gas industry.

The approximate Riemann solver of Roe has been studied. Roe schemes for three different two-phase flow models have been implemented in the framework of a standard numerical algorithm for the solution of hyperbolic conservation laws. The schemes have been analysed by calculation of benchmark tests from the literature, and by comparison with each other.

A Roe scheme for the four-equation one-pressure two-fluid model has been implemented, and a second-order extension based on wave decomposition and flux-difference splitting was shown to work well and to give improved results compared to the first-order scheme. The convergence properties of the scheme were tested on smooth and discontinuous solutions.

A Roe scheme has been proposed for a five-equation two-pressure two-fluid model with pressure relaxation. The use of analogous numerical methods for the five-equation and four-equation models allowed for a direct comparison of a method with and without pressure relaxation. Numerical experiments demonstrated that the two approaches converged to the same results, but that the five-equation pressure-relaxation method was significantly more dissipative, particularly for contact discontinuities. Furthermore, even though the five-equation model with instantaneous pressure relaxation has real eigenvalues, the calculations showed that it produced oscillations for cases where the four-equation model had complex eigenvalues.

A Roe scheme has been constructed for the drift-flux model with general closure laws. For the case of the Zuber-Findlay slip law describing bubbly flows, the Roe matrix is completely analytical. Hence the present Roe scheme is more efficient than previous fully numerical Roe schemes for the drift-flux model.

An isentropic discrete-equation multiphase model has been presented. The incorporation of different interfacial-pressure models was discussed, and examples were given. With the adequate models for the interfacial pressure and velocity, the agreement was very good between the discrete-equation model and the five-equation Roe scheme.

The flux-limiter centred (FLIC) scheme was tested for the four-equation two-fluid model. Only the first-order version (FORCE) of the scheme was found to work well, but it was rather diffusive. The purpose of the multi-stage (MUSTA) method is to come close to the accuracy of upwind schemes while retaining the simplicity of centred schemes. Here it has been applied to the drift-flux model. As the number of stages was increased, the results of the MUSTA scheme approached those of the Roe method. The good results of the MUSTA scheme were dependent on the use of a large-enough local grid. Hence, the main advantage of the MUSTA scheme is its simplicity.

A multiphase characteristic-based boundary-condition method has been tested, and it was shown to be workable for transient problems.

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Hagström, Hampus. "Post Earnings-Announcement Drift : A Comparative Study on the Impact of Measure Calculations." Thesis, KTH, Matematisk statistik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187898.

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This thesis investigate the phenomenon of post earnings-announcement drift where good (bad) interim reports are followed by an upward (downward) drift in stock price. The main question is whether the specific construction of the drift measure has any impact on the drift. The results show that reported earnings are more suited than earnings per share as a measure of earnings. Stock price is seen to affect the decile sorting in many of the measures and as such, using the standard deviation of past expected earnings is recommended. No definitive conclusion can be drawn about the model of unexpected earnings for the standardized unexpected earnings measure. Standardized unexpected earnings outperform earnings announcement returns in the size of drift.
Examensarbetet undersöker fenomenet “Post-Earnings Announcement Drift” där bra (dåliga) kvartalsrapporter följs av generell uppgång (nedgång) i aktiepris. Huvudfrågeställningen är om en specifik beräkningsmetod av måttet har någon inverkan på resultatet, d.v.s. storleken eller riktning på avkastningen. Resultatet visar att periodens resultat/vinst är mer lämpat i beräkningssyfte än vinst per aktie. Aktiepris visar sig ha en påverkan vid indelning av deciler i många fall, och att använda standarddeviationen som standardiserande nämnare är rekommenderat. Ingen slutgiltig slutsats kan dras rörande modellen för oväntad vinst i fallet då måttet baseras på ”Standardized Unexpected Earnings”-modellen. Nämnda modell beskriver däremot det undersökta fenomenet bättre om man ser till storleken av aktieprisutveckling.
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Gull, Karlsson Marcus. "Utredning beträffande förutsättningar för sammankoppling över elnätsföretag." Thesis, Högskolan Väst, Avd för automationssystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-7496.

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Det här examensarbetet har utförts på uppdrag åt Trollhättan Energi AB (TEAB). Examensarbetet är en utredning beträffande förutsättningar för sammankoppling av TEAB:s och Hjärtum Elförenings elnät. De nuvarande ledningsnäten har radialnät och det innebär att det endast har inmatning från ena ledningsänden. En sammankoppling skulle ge möjlighet till sektionerad drift vilket innebär inmatningsmöjligheter från båda ledningsändar. Det gör att ledningsnätet blir mer säkert, tillförlitligt och effektivt. Ett förslag på ett nytt ledningsnät där delar av TEAB:s och Hjärtum Elförenings ledningsnät är sammankopplade har tagits fram. Med det nya förslaget blir ledningsnätet mer driftsäkert och uppfyller lag- och myndighetskrav. Beräkningarna som ligger till grund för arbetet är teoretiskt utförda. Därför bör en fortsatt planering och undersökning inom ämnet utföras innan ledningsnäten sammankopplas. Budgetpriset för ombyggnationen i ledningsnätet har beräknats till cirka 700 000 kronor och investeringen anses nödvändig för att kunna utföra en sammankoppling utav elnäten.
This bachelor´s thesis is conducted on behalf of Trollhättan Energi AB (TEAB). The bachelor´s thesis is an investigation of conditions for interconnection of TEAB and Hjärtum Elförenings electrical grids. The current electrical grids are radial electrical grids and means that it can only be fed from one cable end. An interconnection would allow for sectional operation of the electrical grid. This means input opportunities from both cable ends and that the electrical grid becomes more safely, reliably and efficiently. Suggestion for new electrical grids which parts of TEAB and Hjärtum Elförenings electrical grids are interconnected has been developed. With the new suggestions becomes the electrical grid more reliable and complies with legal and regulatory requirements. The calculations that are underpinning the work is theoretical. Therefore, a continued planning and research in the subject should be performed before the electrical grids are interconnected. Budget price for the reconstruction of the electrical grids have been estimated to be about 700 000 SEK and the investment is considered essential for the interconnection.
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Ptáček, Ondřej. "Návrh dvoutlakého vertikálního kotle na odpadní teplo za plynovou turbínou na zemní plyn." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-319246.

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This diploma thesis deals with proposal of a two-lane vertical boiler using the waste heat after gas turbine. In the first part the heat calculation has been done followed by the arrangement of particular heat exchange surfaces and the drawing of real saw diagram. There are also dimensions of drums, inlet and outlet pipes and transfer pipelines drafted. Furthermore, I have listed the materials that are used for casing the boiler and pipelines. Finally, the boiler loss is calculated and the boiler hydraulic calculation is performed. The supplement contains a boiler drawing.
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Soares, Francisco Miguel Brito. "Modelo de deriva IAMSAR." Master's thesis, 2017. http://hdl.handle.net/10400.26/21055.

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Portugal, país com um dos maiores espaços marítimos do mundo, está sujeito ao elevado risco inerente ao intenso tráfego marítimo que nas suas águas navega. A Marinha Portuguesa é responsável pela salvaguarda da vida humana no mar, e por isso tem por missão garantir a eficiência nos processos e na gestão de recursos. Nesse âmbito, foi desenvolvida uma ferramenta que automatiza o processo de cálculo da deriva do manual de busca e salvamento da IMO (International Maritime Organization), o IAMSAR. Quando é recebido um alerta no MRCC (Maritime Rescue Control Centre) de um incidente no mar, o planeamento de busca é iniciado com a determinação de um datum (localização mais provável do objeto da busca após determinado período de tempo). Atualmente, o MRCC Lisboa, solicita o cálculo da deriva ao IH e, por forma a colmatar esta dependência, a ferramenta “IAMSAR Drift” foi desenvolvida de modo a dar autonomia ao SMC (Search and rescue Mission Co-ordinator) e permitir assim que seja despendido menos tempo neste processo – garantindo, assim, a componente operacional desta ferramenta. A atual ferramenta de cálculo de derivas utilizado no IH carece de alguns ajustes; no entanto, a sua base não permite que o código seja alterado, impossibilitando assim a evolução da ferramenta. A ferramenta desenvolvida no âmbito desta dissertação de mestrado irá permitir que, com as necessidades detetadas no dia-a-dia, sejam introduzidos ajustes, quer no modo de representação dos dados, como no próprio cálculo de deriva. É ainda de salientar que a ferramenta “IAMSAR Drift”, para os casos estudados, além das vantagens mencionadas, conferiu maior rigor no cálculo de datums. Pretende-se, com esta dissertação, melhorar o processo de cálculo de deriva, garantindo maior autonomia aos SMC e, consequentemente, concedendo-lhe mais tempo para a tomada de decisão, pois cada minuto é crucial quando o assunto se trata da salvaguarda da vida humana no mar.
Portugal, country with one of the largest maritime areas in the world, has a high risk of sea incidents, inherent from the intense maritime traffic in his jurisdiction. The Portuguese Navy is the most responsible organization for the safety of life at sea in Portugal, and one of their main focus nowadays is the improvement on the efficient management of resources and processes. In this context, a tool was developed so an existent drift manual process as the IMO (International Maritime Organization), IAMSAR method, could be automatized. After MRCC (Maritime Rescue Control Centre) receives an alert of an incident at sea, the search planning process starts with the determination of the datum (most likely location of the search object for the corrected drift). Presently, MRCC Lisbon, requests IH (Instituto Hidrográfico) the drift motion prediction. This tool was developed in order to MRCC close the dependency to other entities for SAR information, this allows SMC (Search and rescue Mission Co-ordinator) to spend less time with this process, ensuring the operational component of this tool. Present IH tool for drift motion prediction needs some adjustments, on other way, it’s bases doesn’t allow the code to be changed, so the improvement of this tool isn’t possible. The tool developed in the scope of this master's thesis will allow that the nowadays problems shape the tool as it needs, like changing the way data is shown, or even the drift calculation parameters. Beside the advantages already mentioned, for the studied cases, “IAMSAR Drift” had less error between the drift and the real position. With this project, it is intended to improve the drift motion calculation process, ensuring more autonomy to the SMC, consequently, giving him more time for decision making on other tasks during SAR operations, since each minute is crucial when it comes to safety of life at sea.
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Books on the topic "Drift calculation"

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Institution, British Standards. Thermal performance of building elements: Thermal inertia characteristics : calculation methods : draft. London: British Standards Institution, 1993.

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Great Britain. Parliament. House of Commons. Second Standing Committee on Delegated Legislation. Draft electronic communications (network and services) (penalties) (rules for calculation of turnover) order 2003. London: Stationery Office, 2003.

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Rawlings, K. J. Passive Filter Calculations for Semiconductor Drift Chamber Signal Pulse Processing. AEA Technology Plc, 1987.

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A first look at THE HARMONYNC: A Dynamic Harmonics Calculator: Draft of Specifications and User Guide. Turin, Italy: CREATIVE INDUSTRIES PRESS, 2015.

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Publishing, Business Kids. Fun Money Management for My Piggy Bank: Pocket Money or Allowance Tracking Ledger Meant for Kids, with Added Financial Planning Pages and Draft Pages to Do the Calculations 58 Pages Ready to Fill 7x10 in, Allows Big Writing. Independently Published, 2020.

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Book chapters on the topic "Drift calculation"

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Heynderickx, D., M. Kruglanski, J. F. Lemaire, and E. J. Daly. "A New Tool for Calculating Drift Shell Averaged Atmospheric Density." In Radiation Belts: Models and Standards, 173–78. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm097p0173.

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Davidson, F. J. M., A. W. Ratsimandresy, and C. Hannah. "Development of Operational Ocean Forecasting Systems and Impact on Oil Plume Drift Calculations." In NATO Science for Peace and Security Series C: Environmental Security, 321–22. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8565-9_40.

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Ruprecht, A. "Calculation of the Draft Tube Geometry Using the Finite-Element-Code FENFLOSS." In 3D-Computation of Incompressible Internal Flows, 143–48. Wiesbaden: Vieweg+Teubner Verlag, 1993. http://dx.doi.org/10.1007/978-3-322-89452-6_15.

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Nikitchenko, Andrew, Viktor Artiukh, Denis Shevchenko, and Dmitriy Spitsov. "Application of Nonlinear Dynamic Analysis in Calculation of Characteristics of Frictional Draft Gears." In VIII International Scientific Siberian Transport Forum, 963–79. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-37916-2_95.

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Marr, Ray L. "22. Removing Drift Effects When Calculating Control Limits." In Statistical Case Studies for Industrial Process Improvement, 315–24. Society for Industrial and Applied Mathematics, 1997. http://dx.doi.org/10.1137/1.9780898719765.ch22.

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Tochtermann, Peter. "Budget." In Unified Patent Protection in Europe: A Commentary. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198755463.003.0174.

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The budget allows the Budget Committee to estimate the revenue of the Court and the expenses necessary to guarantee the functioning of the Court (Art 15a Draft Budgetary and Financial Regulation). According to Art 29 of the Draft Budgetary and Financial Regulation, the adoption of the budget by the Budget Committee creates the obligation of the CMSs to pay the respective sums to the UPC and empowers the Presidium and the Registrar to make the financial commitments necessary for the purposes of the Court. The costs to be paid by the CMSs include the costs of running the training centre and the mediation and arbitration centre (Art 15a Draft Budgetary and Financial Regulation). The budget further serves as the basis for calculating the financial contributions due from the CMSs to set up the Court (Art 37(2) UPCA). Moreover, the budget will serve as the basis for calculating the contributions by the CMS during the first seven years of operation when the Court will not be able to cover all of its costs from its revenue (Arts 36 and 37(3) and (4) UPCA). The budget will also set out the financial obligations of the Presidium (Art 16 Draft Budgetary and Financial Regulation).
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Petryshyn, Igor, and Olexandr Bas. "NATURAL GAS HEAT COMBUSTION DETERMINATION ON MEASURING SYSTEMS WITH DUPLICATE GAS UNITS." In Integration of traditional and innovative scientific researches: global trends and regional aspect. Publishing House “Baltija Publishing”, 2020. http://dx.doi.org/10.30525/978-9934-26-001-8-2-8.

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The paper focuses on the need to determine the natural gas heat combustion in order to transition to gas metering in units of energy. The technical organization of gas transportation in the main and distribution pipelines on the territory of Ukraine is shown. A detailed analysis of regulatory and legal support, which regulates the definition and accounting of quantitative and qualitative characteristics of natural gas at gas metering units. The draft Rules for determining the natural gas volume are considered in detail. Specified variants of determining the weighted average value of combustion heat in the case of complex gas supply systems with the use of flow measuring means of gas combustion heat. The necessity and urgency of determining the natural gas heat combustion on measuring systems, which are equipped with duplicate metering units without the installation flow means measuring the heat combustion. Emphasis is placed on the fact that a large number of measuring systems are built on the method of variable pressure drop with the use of standard orifice devices. It is pointed out that this method, according to its physical principle, measures the mass gas flow rate. It is also stipulated that ultrasonic gas meters are often used to complete duplicate metering units. The advantages of ultrasonic meters are given. Attention is drawn to the availability of technical metrological support in Ukraine on the basis calibration prover, which includes two secondary standards gas volume and volume flow rate units. Methods and technical means for determining the natural gas heat combustion are analyzed. The calculation of the gas heat combustion and the Wobbe number based on the density values is shown. It is noted that the value of the gas mass flow rate is related to the value of the gas volume flow rate precisely the value of density. The nonlinear dependence of the gas mass heat combustion for the density, which is associated with a disproportionate change in the percentage of carbon atoms to hydrogen atoms, is shown. The structural scheme of the measuring system with the duplicating metering unit for gas density definition and gas heat combustion calculation is developed. The density calculation and natural gas heat combustion depending on the molar fraction of nitrogen and carbon dioxide in the gas from the minimum to the maximum value is carried out. The linear dependence of the change in the gas heat combustion for the molar fraction of nitrogen is established, on the basis of which the method of controlling the gas heat combustion for measuring systems with a duplicate metering unit is proposed. It is shown that the developed procedure for determining the natural gas heat combustion based on the value of density, which is obtained from the calculation of gas mass flow rate and gas volume flow rate consumption on measuring systems with duplicate metering units exactly satisfies class B and C according to DSTU OIML R 140.
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van RHEENEN, A. D., and G. BOSMAN. "MONTE CARLO CALCULATIONS OF THE DIFFUSION COEFFICIENT AND THE DRIFT VELOCITY OF ELECTRONS IN AN AlGaAs-GaAs QUANTUM WELL DEVICE." In Noise in Physical Systems and 1/f Noise 1985, 163–66. Elsevier, 1986. http://dx.doi.org/10.1016/b978-0-444-86992-0.50034-5.

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Haigh, Thomas, Mark Priestley, and Crispin Rope. "Converting ENIAC." In Eniac in Action. The MIT Press, 2016. http://dx.doi.org/10.7551/mitpress/9780262033985.003.0008.

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In spring 1947 a project was launched to convert ENIAC to run code written in the new from introduced with the 1945 “First Draft of a Report on the EDVAC.” This was intertwined with the planning of Monte Carlo calculations for Los Alamos. Adele Goldstine worked with a team of contractors led by Jean Bartik and a group of Aberdeen employees under Richard Clippinger to develop a succession of planned “set-ups” to implement a new control mechanism and vocabulary of general purpose instructions for ENIAC. Our analysis focuses particularly on the relationship of this work on concurrent efforts by von Neumann’s team on the design of the Institute for Advanced Studies computer and a series of related reports on programming methods. Accounts by participants and historians have differed dramatically in assigning credit for the conversion and on such basic facts as when the conversion was implemented and what version of the design was used. The conversion was finally implement in March 1948 by Nick Metropolis (of Los Alamos and the University of Chicago) using a variant design he formulated with Klara von Neumann. At this point ENIAC became the first computer ever to execute a program written in the “modern code paradigm.”
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Froehlich, D. C., and R. C. Elliot. "Did you catch my drift? – Calculating the effect of instream wood buildup on bridge backwater, scour, and hydrodynamic loads." In River Flow 2020, 1701–9. CRC Press, 2020. http://dx.doi.org/10.1201/b22619-238.

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Conference papers on the topic "Drift calculation"

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Jaroszewicz, Leszek, Arkadiusz Ostrzyzek, and Mieczyslaw Szustakowski. "Fiber Optic Sagnac's Interferometer - Sensitivity And Drift Calculation." In Optical Fibers and Their Applications V, edited by Ryszard S. Romaniuk and Mieczyslaw Szustakowski. SPIE, 1990. http://dx.doi.org/10.1117/12.952995.

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Liu, Yujie, and Jeffrey M. Falzarano. "Improvement on the Accuracy of Mean Drift Force Calculation." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62321.

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Accurate computation of the drift forces and moments is required to study the higher order steady excitations on the floater in waves. One of the components of the drift forces and moments is regarding the relative wave elevation. To obtain this term, we need an accurate estimation of the wave elevation. If the field point is exactly on the waterline, we will encounter some difficulty to get the potential value. This paper will provide a more accurate method to calculate the wave elevation around the body and discuss the mathematical justifications. The accuracy will be validated by the comparison against the commercial software. When using more panels in the commercial software, the results will converge to those from our in-house program. We observe a large discrepancy in the relatively higher frequency range. The sharp spikes in the original method are not observed in the improved method. Therefore it is necessary to adopt the proposed method in order to provide more reasonable predictions of the mean drift forces.
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Pozdnyakov, D. V., A. V. Borzdov, and V. M. Borzdov. "Calculation of Electron Drift Velocity in Undoped GaAs Nanowires." In 2007 17th International Crimean Conference - Microwave & Telecommunication Technology. IEEE, 2007. http://dx.doi.org/10.1109/crmico.2007.4368867.

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Webb, Stephen W., and Michael T. Itamura. "Calculation of Post-Closure Natural Convection Heat and Mass Transfer in Yucca Mountain Drifts." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56611.

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Natural convection heat and mass transfer under post-closure conditions has been calculated for Yucca Mountain drifts using the computational fluid dynamics (CFD) code FLUENT. Calculations have been performed for 300, 1000, 3000, and 10,000 years after repository closure. Effective dispersion coefficients that can be used to calculate mass transfer in the drift have been evaluated as a function of time and boundary temperature tilt.
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Quigley, Conor, and Dara Williams. "A Revised Methodology for the Calculation of MODU Watch Circles." In ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/omae2015-41230.

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As the industry continues to push the boundaries of offshore exploration into deeper water depths and harsher environments there is an increased need to ensure the integrity of both the drilling riser and wellhead in the event of loss of station-keeping in dynamically positioned (DP) rigs. In order to determine vessel limiting operating/alert offsets it is necessary to carry out a vessel drift-off analysis which predicts the vessel drift-off speed and direction in the event of a DP failure. This analysis is typically performed for a limited combination of environmental conditions (usually collinear wind, wave and current) and will generally assume a vessel position that is directly above the wellhead. Whilst the results of the standard drift-off analysis, and associated drift-off plots, are useful in determining expected drift-off speed and feasibility of the emergency disconnect sequence (EDS), the outputs are of little operational use to the rig personnel in determining allowable operational/alert offsets for day to day operations. As the vessel is rarely located directly above the wellhead and environmental conditions can vary significantly in both direction and magnitude over the drilling campaign a more comprehensive analysis methodology and set of load cases is required in order to develop useful inputs to the well specific operating guidelines (WSOG). The current standard industry approach is to generate drilling riser operability envelopes independently of drift-off curves and thus recommended operating offsets do not account for drift-off speed, reaction times or EDS times. This can lead to a potential lack of conservatism in WSOG. In order to avoid this lack of conservatism in calculation of operating offsets a coupled steady-state/transient response analysis approach is required to ensure that a DP failure event at limiting operational offset does not lead to damage to the wellhead or riser system. A new revised methodology for the calculation of allowable operating windows and associated alert offsets is presented in this paper. This new methodology couples both the steady state operating limits of the vessel and the transient system response during a drift-off, due to DP failure, in order to present a comprehensive go/no-go operability chart of allowable offset vs. environment for use as input to the WSOG.
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Fonseca, Nuno, Joa˜o Pessoa, and Carlos Guedes Soares. "Calculation of Second Order Drift Forces on a FLNG Accounting for Difference Frequency Components." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57942.

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The usual procedure for calculation of slow drift forces is to simplify the quadratic transfer function by representing the difference frequency components in terms of the zero difference results. In this way the second order problem is much simplified as well as the computational effort. However this approximation has some limitations and in particular for the slow drift oscillations problem it may be important to consider correctly the difference frequency components. The paper presents an analysis of the slow drift exciting forces on a FLNG (Floating Production Storage and Offloading system for production of LNG). The complete second order forces are computed by WAMIT V6.1s which is based on a boundary element method. Results of the horizontal second order drift forces are presented for several difference frequency values. Deep water and two shallow water depths are considered, since water depth seems to have an important effect on the quadratic transfer functions.
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Barzegar Valikchali, Saeed, Mitchell Anderson, David Molyneux, and Dean Steinke. "Estimating Second Order Wave Drift Forces and Moments for Calculating DP Capability Plots." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-96307.

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Abstract The DP capability plot is a useful tool to show the limitations of a dynamic positioning system for ships or offshore structures under loading from wind, waves and ocean currents. At the preliminary design stage, it is desirable to use fast methods for calculating the forces and moments caused by the environment, preferably without the need for CFD simulations or model experiments. Empirical methods are available for predicting aerodynamic forces and moments, and hydrodynamic forces and moments from currents, but little is published for second order wave drift forces. Wave drift forces and moment calculations have been carried out using WAMIT, for a series of ship hulls from OSVs to VLCCs and the effects of wave direction and frequency on the Surge, Sway, and Yaw forces and moment have been studied. The presentation of the results allows the user to interpolate the resulting drift forces and moments as a function of wave direction for a given ship size. In terms of wave drift loads calculation, it is found that the very large vessels are dominant in the low frequency waves, while smaller size ships are in high frequencies. The wave frequency and direction in which maximum drift load occurs depends on the ship size.
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Awad, Morad, and Shye Shapira. "An analytical calculation of the silicon limit for two dimensional RESURF drift layers." In 2014 IEEE 28th Convention of Electrical & Electronics Engineers in Israel (IEEEI). IEEE, 2014. http://dx.doi.org/10.1109/eeei.2014.7005853.

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Tokio Hamada. "A calculation of E.M.F. Drift from the Rh contents for platinum based thermocouples." In SICE Annual Conference 2007. IEEE, 2007. http://dx.doi.org/10.1109/sice.2007.4421199.

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Ommani, Babak, Nuno Fonseca, and Carl Trygve Stansberg. "Simulation of Low Frequency Motions in Severe Seastates Accounting for Wave-Current Interaction Effects." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62550.

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Today’s industry practice assumes wave drift forces on floating structures can be computed from zero current wave drift force coefficients for the stationary floater, while simplified correction models introduce current effects and slow drift velocity effects. The paper presents an alternative approach which overcomes some of the limitations of today’s procedures. The method, to be applied together with a time domain solution of the low frequency motions, is based on pre-calculation of mean wave drift force coefficients for a range of current velocities. During the low frequency motions simulation, the wave drift forces induced by the irregular waves are computed from the mean drift coefficients corresponding to instantaneous relative velocity resulting from the current and the low frequency velocities. A simple interpolation model, based on a quasi-steady assumption, is applied to obtain the drift forces in time-domain. Since calculation of the wave drift forces on Semi-submersibles in severe sea states with fully consistent methods is out of reach, a semi-empirical model is applied to correct the potential flow wave drift force coefficients. This model takes into account viscous effects, that are important in high seastates, and wave-current interaction effects. The paper compares the wave drift forces and the related low frequency motions computed by the proposed method, with results applying “standard” methods and with model test data. The test data was obtained in the scope of the EXWAVE JIP, with model tests designed to investigate wave drift forces in severe seastates and assess the wave-current interaction effects.
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Reports on the topic "Drift calculation"

1

A. Nielsen. EMPLACEMENT DRIFT SHIELDING CALCULATION. Office of Scientific and Technical Information (OSTI), October 1999. http://dx.doi.org/10.2172/888837.

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A.D. Kruz. Turnout Drift Operating Envelope Calculation. Office of Scientific and Technical Information (OSTI), August 2005. http://dx.doi.org/10.2172/899460.

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T. Lahnalampi. Turnout Drift Operating Envelope Calculation. Office of Scientific and Technical Information (OSTI), August 2005. http://dx.doi.org/10.2172/899461.

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Li, Guomin, Chin-Fu Tsang, and Jens Birkholzer. Calculation of drift seepage for alternative emplacementdesigns. Office of Scientific and Technical Information (OSTI), July 1999. http://dx.doi.org/10.2172/926876.

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D. M. Jolley. In-Drift Microbial Communities Model Validation Calculation. Office of Scientific and Technical Information (OSTI), October 2001. http://dx.doi.org/10.2172/836500.

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M. Lin and D. C. Kicker. Supporting Rock Fall Calculation for Drift Degradation: Quantification of Uncertainties. Office of Scientific and Technical Information (OSTI), November 2001. http://dx.doi.org/10.2172/836345.

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Krall, N. A. Finite. beta. and nonlocal calculation of collisionless and dissipative drift instabilities. Office of Scientific and Technical Information (OSTI), April 1991. http://dx.doi.org/10.2172/5125639.

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G. Rewoldt, L.-P. Ku, W.A. Cooper, and W.M. Tang. Drift Mode Calculations in Nonaxisymmetric Geometry. Office of Scientific and Technical Information (OSTI), July 1999. http://dx.doi.org/10.2172/9115.

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D. M. Jolley. In-Drift Microbial Communities Model Validation Calculations. Office of Scientific and Technical Information (OSTI), September 2001. http://dx.doi.org/10.2172/836497.

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D.M. Jolley. IN-DRIFT MICROBIAL COMMUNITIES MODEL VALIDATION CALCULATIONS. Office of Scientific and Technical Information (OSTI), December 2001. http://dx.doi.org/10.2172/861080.

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