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Dissertations / Theses on the topic 'Wind spectra'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

Won, Younsang. "Higher order numerical schemes for propagation of wind wave spectra." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/39822.

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2

Boti, Ismael. "Noise spectra comparison among wind turbinesand its implications to human perception." Thesis, Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-25819.

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The noise coming from wind power development can be an environmental impact forthe surrounding communities. It is well known that the main wind turbine noise iscaused by the movement of the turbine wings through the air. However, there areuncertainties about the importance of machinery sounds and possible variations amongwind turbines. A high resolution acquisition system was used to perform a fieldexperiment comparison of the noise spectra from some wind turbines at Laholm(Sweden). The results have shown different band spectra peaks associated to machinerysounds among wind turbines from the s

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3

Campbell, P. R. J. "Toward DSS : intelligent prediction of wind spectra and mining of operational data." Thesis, University of Ulster, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.412521.

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4

Kawabata, Ryoji. "Accretion Flow and Wind around Compact Objects: Structure, Spectra, and Time Variations." 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/120658.

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5

Huenemoerder, David, Lidia Oskinova, Richard Ignace, et al. "On the Weak-Wind Problem in Massive Stars: X-Ray Spectra Reveal a Massive Hot Wind in mu Columbae." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etsu-works/6252.

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Mu Columbae is a prototypical weak-wind O star for which we have obtained a high-resolution X-ray spectrum with the Chandra LETG/ACIS instrument and a low-resolution spectrum with Suzaku. This allows us, for the first time, to investigate the role of X-rays on the wind structure in a bona fide weak-wind system and to determine whether there actually is a massive hot wind. The X-ray emission measure indicates that the outflow is an order of magnitude greater than that derived from UV lines and is commensurate with the nominal wind-luminosity relationship for O stars. Therefore, the "weak-wind p

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6

Arnqvist, Johan. "Mean Wind and Turbulence Conditions in the Boundary Layer above Forests." Doctoral thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-237764.

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As wind turbines have grown, new installation areas become possible. Placing wind turbines in forested landscapes introduce uncertainties to the wind resource estimation. Even though close-to-canopy processes have been studied intensively during the last thirty years, the focus has mostly been on exchange processes and the height span of the studies has been below the rotor of a modern wind turbine. This thesis contains analysis of new measurements from a 138 m high tower in a forested landscape. The previous knowledge of near-canopy processes is extended to the region above the roughness subl

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7

Shan, Martin [Verfasser]. "Load Reducing Control for Wind Turbines: Load Estimation and Higher Level Controller Tuning based on Disturbance Spectra and Linear Models / Martin Shan." Kassel : Universitätsbibliothek Kassel, 2017. http://d-nb.info/1154972496/34.

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8

Ge, Zhongfu. "Analysis of surface pressure and velocity fluctuations in the flow over surface-mounted prisms." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/25965.

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The full-scale value of the Reynolds number associated with wind loads on structures is of the order of 10^7. This is further complicated by the high levels of turbulence fluctuations associated with strong winds. On the other hand, numerical and wind tunnel simulations are usually carried out at smaller values of Re. Consequently, the validation of these simulations should only be based on physical phenomena derived with tools capable of their identification. In this work, two physical aspects related to extreme wind loads on low-rise structures are examined. The first includes the statistica

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9

Yilmaz, Nihal. "Spectral Characteristics Of Wind Waves In The Eastern Black Sea." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608614/index.pdf.

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Wind waves are highly complex, random phenomena. One way to describe the irregular nature of the sea surface is the use of wave energy spectrum. Spectral information for wind waves in the Black Sea is extremely limited. Knowledge on spectral characteristics of wind waves would contribute to scientific, engineering and operational coastal and marine activities in the Black Sea. The aim of the present thesis is to investigate characteristics of wind wave spectra for the Eastern Black Sea. This would allow detailed understanding of the nature of the waves occurring in this enclosed basin. Long-te

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10

Parra, Luis Antonio. "Sistema de controle com compensação de tempo morto aplicado à geração de vento em tanque de prova." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3152/tde-22092014-155323/.

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Este trabalho descreve o desenvolvimento de um sistema de controle com compensação de tempo morto aplicado a um ventilador para simular os efeitos do vento em modelos de embarcações. O sistema é instalado no tanque de provas do Departamento de Engenharia Naval da Escola Politécnica da USP. Um sistema de controle baseado em computador é elaborado para a realização dos testes e validação, procedendo-se inicialmente a identificação do sistema a ser controlado. Na malha de controle, o sinal de referência é a velocidade do vento desejada em uma distância pré-definida do ventilador e pode ser tanto

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11

Kleusberg, Elektra. "Wind turbine simulations using spectral elements." Licentiate thesis, KTH, Stabilitet, Transition, Kontroll, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-207630.

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Understanding the flow around wind turbines is a highly relevant research question due to the increased interest in harvesting energy from renewable sources. This thesis approaches the topic by means of numerical simulations using the actuator line method and the incompressible Navier–Stokes equations in the spectral element code Nek5000. The aim is to gain enhanced understanding of the wind turbine wake structure and wind turbine wake interaction. A verification study of the method and implementation is performed against the finite volume solver EllipSys3D using two types of turbines, an idea

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12

Fuchs, David M. R. "2D spectral modeling of wind-waves on inland lakes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0001/MQ45045.pdf.

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13

Drummond, Fiona Jean. "Spectral interpretation of the melting layer using a wind profiler." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55490.

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A boundary-layer wind profiler has been operated continuously in downtown Montreal as a collaborative project of McGill University and the NOAA Aeronomy Laboratory. The records contain hundreds of hours of data on the melting layer of snow, consisting of Doppler spectra in the vertical profiler beam with a typical height resolution of 100 m and a time resolution of about 1 minute. A particular case study day was selected for analysis of precipitation processes associated with the melting of snow to become rain. We have examined the Doppler spectra just above and below the melting layer for evi

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14

Masson, Diane. "Spectral evolution of wind generated surface gravity waves in a dispersed ice field." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/29020.

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The Marginal Ice Zone includes wide areas covered by dispersed ice floes in which wave conditions are significantly affected by the ice. When the wind blows from the solid ice pack, towards the open sea, growing waves are scattered by the floes, their spectral characteristics being modified. To further understand this problem, a model for the evolution of wind waves in a sparse field of ice floes was developed. The sea state is described by a two-dimensional discrete spectrum. Time-limited wave growth is obtained by numerical integration of the energy balance equation using the exact nonlinear

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15

Qin, Wenting. "Application of the spectral wave model SWAN in Delaware Bay." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 4.68 Mb., 130 p, 2005. http://proquest.umi.com/pqdlink?did=1037889341&Fmt=7&clientId=8331&RQT=309&VName=PQD.

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16

Vu, Hoang Giang. "Estimation and diagnostic of doubly-fed asynchronous wind generator." Thesis, Lyon 1, 2014. http://www.theses.fr/2014LYO10151.

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Dans ce mémoire de thèse nous présentons une méthodologie pour le diagnostic et la surveillance en ligne des éoliennes de l'état de l'ensemble machine électrique onduleur à partir de la mesure du champ magnétique continu. Ce travail est scindé en deux parties complémentaires. Dans la première partie, nous donnons quelques contributions concernant l'estimation de l'état et des paramètres pour certaines classes de systèmes non linéaires. Ces mêmes estimateurs ont été validés en simulation et sur un banc d'essai. La deuxième partie porte sur la mise en œuvre et la conception de deux bancs d'essai

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17

Hamann, Wolf-Rainer, Lidia M. Oskinova, and Achim Feldmeier. "Spectrum formation in clumpy stellar winds." Universität Potsdam, 2007. http://opus.kobv.de/ubp/volltexte/2008/1783/.

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Modeling expanding atmospheres is a difficult task because of the extreme non-LTE situation, the need to account for complex model atoms, especially for the iron-group elements with their millions of lines, and because of the supersonic expansion. Adequate codes have been developed e.g. by Hillier (CMFGEN), the Munich group (Puls, Pauldrach), and in Potsdam (PoWR code, Hamann et al.). While early work was based on the assumption of a smooth and homogeneous spherical stellar wind, the need to account for clumping became obvious about ten years ago. A relatively simple first-order clumping corre

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18

Wang, Weili. "Remote sensing of swell and currents in coastal zone by HF radar." Thesis, Toulon, 2015. http://www.theses.fr/2015TOUL0011/document.

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L’environnement maritime du littoral implique de nombreux processus complexes, mais le manque de données en haute résolution couvrant une large zone sur une longue période est souvent l’obstacle principal à des recherches plus approfondies. Le radar haute-fréquence (HF) est un moyen de faire de la télédétection afin d’obtenir pratiquement en temps réel de l’information sur la surface de la mer et sur une large zone. Ainsi l’étude de l’inversion des paramètres marins à partir de données issues de radars HF est réellement porteuse de sens. Cette thèse fait l’usage d’un jeu de données collectées

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19

Victorin, Amalia. "Multi-taper method for spectral analysis and signal reconstruction of solar wind data." Thesis, KTH, Rymd- och plasmafysik, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91824.

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Fluctuations in the solar wind characteristics such as speed, temperature, magnetic strength and density are associated with pulsations in the magnetosphere. Coherent magnetohydrodynamic waves in the solar wind may sometimes be a direct source of periodic pulsations in the frequency interval 1 to 7 mHz in the magnetosphere. In studies of the solar wind and the way its variation affects the magnetosphere, the significance of different frequency components and their signal fonn are of interest. Spectral analysis and signal reconstruction are important tools in these studies and in this report th

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20

Huenemoerder, David P., K. G. Gayley, Wolf-Rainer Hamann, et al. "Probing Wolf–Rayet Winds: Chandra/HETG X-Ray Spectra of WR 6." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etsu-works/2692.

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With a deep Chandra/HETGS exposure of WR 6, we have resolved emission lines whose profiles show that the X-rays originate from a uniformly expanding spherical wind of high X-ray-continuum optical depth. The presence of strong helium-like forbidden lines places the source of X-ray emission at tens to hundreds of stellar radii from the photosphere. Variability was present in X-rays and simultaneous optical photometry, but neither were correlated with the known period of the system or with each other. An enhanced abundance of sodium revealed nuclear-processed material, a quantity related to the e

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21

van, Cleef Garrett Warren. "Zonal winds between 25 and 120 km retrieved from solar occultation spectra /." The Ohio State University, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487672631600168.

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22

Holmbom, Joakim. "Modelling of Waves and Currents in the Baltic Sea." Thesis, KTH, Vattendragsteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-96232.

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To facilitate the process of setting up small scale environmental models in coastal and offshore areas a wave model and a 2D current model for the Baltic Sea have been set up with MIKE 21. The ambition is that the Baltic Sea model can serve as a source of boundary conditions for local models. The main focus in the project has been to determine which input data to use to get the best results and then to calibrate and validate the model with the best data sets available. The wave model has been tested with three different sources of wind forcing and the results with the different sources are eva

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23

Feldmeier, Achim. "Hydrodynamics of astrophysical winds driven by scattering in spectral lines." Thesis, [S.l.] : [s.n.], 2001. http://pub.ub.uni-potsdam.de/2002/0007/feldm.ps.

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24

Widodo, Slamet. "Wind and Doppler Shift Compensation for Spread Spectrum Sound-based Positioning System." Kyoto University, 2013. http://hdl.handle.net/2433/180518.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第17901号<br>農博第2024号<br>新制||農||1017(附属図書館)<br>学位論文||H25||N4797(農学部図書室)<br>30721<br>京都大学大学院農学研究科地域環境科学専攻<br>(主査)教授近藤直, 准教授小川雄一, 教授飯田訓久<br>学位規則第4条第1項該当

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25

Peshlov, Boyan N. "Infestation Detection in Wild Blueberries Using Near Infrared Spectra and Multivariate Data Analysis." Fogler Library, University of Maine, 2008. http://www.library.umaine.edu/theses/pdf/PeshlovBN2008.pdf.

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26

Ignace, Richard. "Long-Wavelength, Free–Free Spectral Energy Distributions from Porous Stellar Winds." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etsu-works/2685.

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The influence of macroclumps for free–free spectral energy distributions (SEDs) of ionized winds is considered. The goal is to emphasize distinctions between microclumping and macroclumping effects. Microclumping can alter SED slopes and flux levels if the volume filling factor of the clumps varies with radius; however, the modifications are independent of the clump geometry. To what extent does macroclumping alter SED slopes and flux levels? In addressing the question, two specific types of macroclump geometries are explored: shell fragments (pancake-shaped) and spherical clumps. Analytic and

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27

Schlez, Wolfgang. "Voltage fluctuations caused by groups of wind turbines." Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/7364.

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Wind turbines connected to the distribution network can be the cause of voltage fluctuations and resulting fluctuations in the light intensity emitted by light bulbs. These fluctuations may cause people disturbance. A model has been developed to obtain a flicker prediction which is useful in the design process of a wind farm. The model is based exclusively in the frequency domain (FD). This new approach allows very fast and efficient evaluation. The impact of individual parameters is often easier to recognise and evaluate in a FD-representation. The following factors leading to flicker disturb

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28

Schachterle, Gregory Dallin. "Improved Analysis Techniques for Scatterometer Wind Estimation." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/9218.

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In this thesis, three improved analysis techniques for scatterometer wind estimation are presented. These techniques build upon previous methods that help validate scatterometer data. This thesis examines the theory connecting the 1D and 2D kinetic energy spectra and uses QuikSCAT data to measure the 2D kinetic energy spectrum of ocean winds. The measured 2D kinetic energy spectrum is compared to the traditional 1D kinetic energy spectrum. The relationship between the 2D kinetic energy spectra and the 1D kinetic energy spectra confirms findings from previous studies that ocean winds modeled in

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29

Kraus, Stefan. "Infrared spectro-interferometry of massive stars disks, winds, outflows, and stellar multiplicity /." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=985576529.

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30

Scott, Nicholas Vicente. "Observations of the wind-wave spectrum and steep wave statistics in open ocean waters." View online ; access limited to URI, 2003. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3103724.

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31

Scharnberg, Fábio Augusto. "Caracterização aerodinâmcia de edifícios através do espectro das cargas totais medidas em túnel de vento." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/181819.

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Nos últimos anos cresceu o interesse por construir edifícios cada vez mais altos, os quais estampam o poderio tecnológico e econômico das nações. Concomitantemente as estruturas se tornaram mais esbeltas e flexíveis e os fenômenos dinâmicos oriundos da ação do vento, que em edificações baixas não representam grande relevância no carregamento, começam a surgir e apresentar seus efeitos. Desta maneira, é importante conhecer como se desenvolve o escoamento do ar e a distribuição das pressões no entorno destas estruturas. Neste trabalho, caracteriza-se aerodinamicamente, através de dados oriundos

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32

Lee, Christopher Francis. "Use of wind profilers to quantify atmospheric turbulence." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/use-of-wind-profilers-to-quantify-atmospheric-turbulence(d6a12ed2-533a-4dae-9f0d-747bc0b4c725).html.

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Doppler radar wind profilers are already widely used to measure atmospheric winds throughout the free troposphere and stratosphere. Several methods have been developed to quantify atmospheric turbulence with such radars, but to date they have remained largely un-tested; this thesis presents the first comprehensive validation of one such method. Conventional in-situ measurements of turbulence have been concentrated in the surface layer, with some aircraft and balloon platforms measuring at higher altitudes on a case study basis. Radars offer the opportunity to measure turbulence near continuous

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33

Yu, Bo. "Surface Mean Flow and Turbulence Structure in Tropical Cyclone Winds." FIU Digital Commons, 2007. http://digitalcommons.fiu.edu/etd/25.

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Hurricanes are one of the deadliest and costliest natural hazards affecting the Gulf coast and Atlantic coast areas of the United States. An effective way to minimize hurricane damage is to strengthen structures and buildings. The investigation of surface level hurricane wind behavior and the resultant wind loads on structures is aimed at providing structural engineers with information on hurricane wind characteristics required for the design of safe structures. Information on mean wind profiles, gust factors, turbulence intensity, integral scale, and turbulence spectra and co-spectra is essen

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34

Aswegan, Kevin Paul. "Rational Procedure for Damage Based Serviceability Design of Steel Buildings Under Wind Loads and a Simple Linear Response History Procedure for Building Codes." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/51549.

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This thesis is divided into two topics: the development of a procedure for wind serviceability design of steel buildings and the development of a simple linear response history analysis for building codes. In the United States the building codes are generally silent on the issue of serviceability. This has led to a wide variation in design practices related to service level wind loads. Chapter 2 of this thesis contains a literature review which discusses pertinent aspects of wind drift serviceability, including selecting the mean recurrence interval (MRI), mathematical modeling of the structu

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35

Verscharen, Daniel [Verfasser]. "On convected wave structures and spectral transfer in space plasmas : applications to solar corona and solar wind / Daniel Verscharen." Braunschweig : Institut für Theoretische Physik, 2012. http://d-nb.info/1231994347/34.

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36

North, Jan Arthur. "Fourier image synthesis and slope spectrum analysis of deepwater, wind-wave scenes viewed at Brewster's angle /." Online version of thesis, 1989. http://hdl.handle.net/1850/11520.

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37

QI, G., G. Chen, Wyk MA van, Wyk BJ van, and Y. Zhang. "A four-wing chaotic attractor generated from a new 3-D quadratic autonomous system." Elsevier, 2007. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000759.

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This paper introduces a new 3-D quadratic autonomous system, which can generate two coexisting single-wing chaotic attractors and a pair of diagonal double-wing chaotic attractors. More importantly, the system can generate a fourwing chaotic attractor with very complicated topological structures over a large range of parameters. Some basic dynamical behaviors and the compound structure of the new 3-D system are investigated. Detailed bifurcation analysis illustrates the evolution processes of the system among two coexisting sinks, two coexisting periodic orbits, two coexisting single-wing chao

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38

Vietri, Giustina. "Searching for outflows signatures in sdss spectra of x-ray selected, obscured agn in the cosmos field." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7413/.

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Partendo dal campione di AGN presente nella survey di XMM-COSMOS, abbiamo cercato la sua controparte ottica nel database DR10 della Sloan Digital Sky Survey (SDSS), ed il match ha portato ad una selezione di 200 oggetti, tra cui stelle, galassie e quasar. A partire da questo campione, abbiamo selezionato tutti gli oggetti con un redshift z<0.86 per limitare l’analisi agli AGN di tipo 2, quindi siamo giunti alla selezione finale di un campione di 30 sorgenti. L’analisi spettrale è stata fatta tramite il task SPECFIT, presente in IRAF. Abbiamo creato due tipi di modelli: nel primo abbiamo consid

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Wuttke, Brian C. "A Model Describing the Effects of Equipment, Instruction and Director and Student Attributes on Wind-Band Intonation." Scholarly Repository, 2011. http://scholarlyrepository.miami.edu/oa_dissertations/564.

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The purpose of this study was to test a hypothesized model of wind-band intonation, using equipment, instruction and director and student attributes as components. Band directors (N= 5) and their students N= 200) were given a combination of published and researcher designed tests to measure equipment quality, experience, knowledge of instrument pitch tendencies and aural discrimination skills. In addition, each band was video recorded to observe their warm-up, tuning and rehearsal procedures and activities. Spectrum analysis using Praat phonetic analysis software (Boersma & Weenik, 2010) was

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40

Thompson, Gregory Brandon. "Time-series Analysis of Line Profile Variability in Optical Spectra of ε Orionis". University of Toledo / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1249511358.

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Wink, Nicolas [Verfasser], and Jan M. [Akademischer Betreuer] Pawlowski. "Towards the spectral properties and phase structure of QCD / Nicolas Wink ; Betreuer: Jan M. Pawlowski." Heidelberg : Universitätsbibliothek Heidelberg, 2020. http://d-nb.info/1213164451/34.

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Blodgett, Jeffrey Richard. "Analysis, Validation, and Improvement of High-Resolution Wind Estimates from the Advanced Scatterometer (ASCAT)." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/5614.

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The standard L2B ocean wind product from the Advanced Scatterometer (ASCAT) is retrieved as a 25 km product on a 12.5 km grid. Ultra-high resolution (UHR) processing allows ASCAT wind retrieval on a high-resolution 1.25 km grid. Ideally, such a high-resolution sample grid provides wind information down to a 2.5 km scale, allowing better analysis of winds with high spatial variability such as those in near-coastal regions and storms. Though the wind field is sampled on a finer grid, the actual data resolution needs to be validated. This thesis provides an analysis and validation of ASCAT UHR wi

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43

Manero, Font Jaume. "Deep learning architectures applied to wind time series multi-step forecasting." Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/669283.

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Forecasting is a critical task for the integration of wind-generated energy into electricity grids. Numerical weather models applied to wind prediction, work with grid sizes too large to reproduce all the local features that influence wind, thus making the use of time series with past observations a necessary tool for wind forecasting. This research work is about the application of deep neural networks to multi-step forecasting using multivariate time series as an input, to forecast wind speed at 12 hours ahead. Wind time series are sequences of meteorological observations like wind speed, te

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Vadsola, Mayank. "High-Order Spectral Element Method Simulation of Flow Past a 30P30N Three-Element High Lift Wing." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40964.

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The purpose of a multi-element high lift device is to increase lift dramatically while controlling the stall limit. The fluid flow over a multi-element high lift device has been explored widely both experimentally and numerically at high Reynolds numbers (O(10^6 )). The numerical simulations use turbulence models and hence details of the flow are not yet available. Low Reynolds number (O(10^4 )) flows over high lift devices have not been explored until recently. These lower Reynolds number flows have applications in the development of small aerial vehicles. The present work discusses bo

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Li, Shanghuo, Junzhi Wang, Zhi-Yu Zhang, et al. "Millimetre spectral line mapping observations towards four massive star-forming H ii regions." OXFORD UNIV PRESS, 2017. http://hdl.handle.net/10150/623847.

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We present spectral line mapping observations towards four massive star-forming regions Cepheus A, DR21S, S76E and G34.26+0.15 - with the IRAM 30-m telescope at the 2 and 3 mm bands. In total, 396 spectral lines from 51 molecules, one helium recombination line, 10 hydrogen recombination lines and 16 unidentified lines were detected in these four sources. An emission line of nitrosyl cyanide (ONCN, 14(0), 14-13(0), (13)) was detected in G34.26+0.15, as the first detection in massive star-forming regions. We found that c-C3H2 and NH2D show enhancement in shocked regions, as suggested by the evid

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Seo, Young-Jun. "Energy neutral operation method for hybrid energy storage integrated with wind farm using C-rate and frequency spectrum analysis." Thesis, The University of Wisconsin - Milwaukee, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1592297.

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<p> In this thesis, the author describes various evaluation criteria, in particular the C-rate (charge/discharge-rate), of energy storage (ES) systems to explain the efficiency and technical benefits of battery-ultracapacitor hybrid energy storage (HES), and the technical characteristics of subsequently derived short-duration and long-duration type ES. In addition, for effective use of energy storage, a straightforward state of charge (SOC) correction method for energy neutral operation is proposed, and through a simple comparative example of ES operation, the effectiveness of HES in relation

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Nwaodua, Emmanuel C. "Last Deglacial Arctic to Pacific Transgressions via the Bering Strait: Implications for Climate, Meltwater Source, Ecosystems and Southern Ocean Wind Strength." Kent State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=kent1385374398.

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Zhang, Han. "Global Analysis and Structural Performance of the Tubed Mega Frame." Thesis, KTH, Betongbyggnad, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-147382.

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The Tubed Mega Frame is a new structure concept for high-rise buildings which is developed by Tyréns. In order to study the structural performance as well as the efficiency of this new concept, a global analysis of the Tubed Mega Frame structure is performed using finite element analysis software ETABS. Besides, the lateral loads that should be applied on the structure according to different codes are also studied. From the design code study for wind loads and seismic design response spectrums, it can be seen that the calculation philosophies are different from code to code. The wind loads are

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Forbes=Stovall, Jennifer. "Action Spectrum for Photoentrainment of the Circadian Clock in Wild-Type Chlamydomonas reinhardtii." TopSCHOLAR®, 2011. http://digitalcommons.wku.edu/theses/1094.

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The circadian clock is an endogenous timer that oscillates with a period of approximately 24 hours and is reset upon environmental time cues such as the daily light/ dark or temperature cycles. Chlamydomonas reinhardtii is an ideal model organism for research on the circadian clock, because it shows several well-characterized behaviors that exhibit a circadian rhythm. Its circadian rhythm of phototaxis (swimming toward light) has been automated. Former action spectrum studies using the circadian phototaxis rhythm as an indicator surprisingly found that pulses of blue light were not effective i

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Jung, Jae Sung. "Development and Deployment of Renewable and Sustainable Energy Technologies." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/56621.

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Solar and wind generation are one of the most rapidly growing renewable energy sources, and is regarded as an appealing alternative to conventional power generated from fossil fuel. This is leading to significant levels of distributed renewable generation being installed on distribution circuits. Although renewable generation brings many advantages, circuit problems are created due to its intermittency, and overcoming these problems is a key challenge to achieving high penetration. It is necessary for utilities to understand the impacts of Photovoltaic (PV) generation on distribution circuits

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