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Dissertations / Theses on the topic 'Light intensity'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Edmonds, Anne, University of Western Sydney, of Arts Education and Social Sciences College, and School of Contemporary Arts. "Light as surface and intensity." THESIS_CAESS_CAR_Edmonds_A.xml, 2003. http://handle.uws.edu.au:8081/1959.7/561.

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Light Intensity and Surface is the title of this PhD art exhibition where I explore through paintings, the world of my own encounter with the radiant light of the Linear Accelerator used in treatment of women with breast cancer. This engagement with the world of light technology encompasses oncologists, physicists and women who extended their personal experience to inform my artwork and contribute to the theoretical connections made in this thesis. The contribution of this thesis lies in how the lecture The Origin of the Work of Art by philosopher Martin Heidegger can be applied to a reading o

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Edmonds, Anne B. "Light as surface and intensity /." View thesis, 2003. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20050923.103216/index.html.

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Thesis (Ph.D.) -- University of Western Sydney, 2003.<br>"Doctor of Philosophy, Visual and Contemporary Arts, University of Western Sydney" Supervisor, Graham Marchant; co-supervisor, Phillip Kent. Bibliography : leaves 214-221.

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3

WoÌˆlfl, Friedrich. "Intensity noise studies of semiconductor light emitters." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342990.

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4

Köhler, Christian. "Ultrashort Light Sources from High Intensity Laser-Matter Interaction." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-88076.

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The thesis deals with the development and characterization of new light sources, which are mandatory for applications in atomic and molecular spectroscopy, medical and biological imaging or industrial production. For that purpose, the employment of interactions of high intensity ultra-short laser pulses with gaseous media offers a rich variety of physical effects which can be exploited. The effects are characterized by a nonlinear dependency on the present light fields. Therefore, accurate modeling of the nonlinearities of the gas is crucial. In general, the nonlinearities are due to the elec

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5

Beeler, Matthew. "Intensity Correlations of Light Scattered from Cold Atom Clouds." Miami University Honors Theses / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=muhonors1111085986.

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6

Paee, Furzani. "Photosynthetic acclimation to lower light intensity in Arabidopsis thaliana." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/photosynthetic-acclimation-to-lower-light-intensity-in-arabidopsis-thaliana(39ab9c6f-f1f2-463c-93c2-32210b7d8f4e).html.

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Photoacclimation is a process by which photosynthetic capacity is regulated in response to environmental adjustments in terms of light regime. Photoacclimation is essential in determining the photosynthetic capacity to optimize light use and to avoid potentially damaging effects. Previous work in our laboratory has identified a gene, gpt2 (At1g61800) that is essential for plants to acclimate to an increase in growth irradiance. Furthermore, we observed that the accession Columbia-0 (Col-0) is unable to respond to increases in light. Therefore, a Quantitative Trait Locus (QTL) mapping analysis

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ASHRAF, MUHAMMAD WASEEM. "Circular intensity differential scattering of light for biophotonics applications." Doctoral thesis, Università degli studi di Genova, 2022. http://hdl.handle.net/11567/1093636.

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This thesis demonstrate the application of a label-free, non-invasive biophysical method based on angle-resolved light scattering calculations to characterize different biological samples; virus particles, chromatin fiber, and hierarchical chiral polymers. Chapter 1 provides an introduction on the foundation of electromagnetic theory, light scattering phenomenon, Mueller scattering matrix and its applications to characterize various samples based on numerical simulations and experimental measurements. A numerical method to calculate light scattering quantities, discrete dipole approximation

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Thompson, Claire Elisabeth. "The effects of light intensity on turkey eyes and behaviour." Thesis, University of Leeds, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250913.

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9

Shi, Wen. "The Age-Related Dynamic Accommodative Characteristics Associated With Light Intensity and Chromaticity." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/30150.

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Visual accommodation plays a critical role in one's visual perception and activities of daily living. The age-related accommodation loss poses a greater risk to older adults' safety and independence. Although extensive effort has been made to study the effects of aging on accommodation, the relationship between aging and the dynamic aspects of accommodation is still unknown. Furthermore, since light is the carrier of external stimuli for accommodation, it is of value to assess the influences of light on the age-related accommodation loss. Therefore, a study was conducted to investigate the

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10

Pettersson, Rimgard Belinda. "Light Intensity Dependence of Charge Recombination in Dye-Sensitized NiO films." Thesis, Uppsala universitet, Fysikalisk kemi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-227635.

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11

Bell, Stuart James. "The effect of light intensity and temperature on photocatalytic water splitting." Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/50960/1/Stuart_Bell_Thesis.pdf.

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Photocatalytic water splitting is a process which could potentially lead to commercially viable solar hydrogen production. This thesis uses an engineering perspective to investigate the technology. The effect of light intensity and temperature on photocatalytic water splitting was examined to evaluate the prospect of using solar concentration to increase the feasibility of the process. P25 TiO2 films deposited on conducting glass were used as photocatalyst electrodes and coupled with platinum electrodes which were also deposited on conducting glass. These films were used to form a photocata

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12

Paniagua, Diaz Alba Maria. "Light in scattering media : active control and the exploration of intensity correlations." Thesis, University of Exeter, 2018. http://hdl.handle.net/10871/33161.

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When light encounters scattering materials such as biological tissue, white paint or clouds, it gets randomly scattered in all directions, which traditionally has been seen as a barrier for imaging techniques (reducing their resolution) or sensing, due to the reduction of the penetration depth of light. However, in recent years it has been shown that scattering might not necessarily be an impediment, and that the knowledge of the properties of multiple scattering can be indeed useful for imaging, sensing and other applications. In the first part of this thesis (Chapters 2 to 5) we study the im

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Akbari, Pegah. "Exploration of Heat Strain during Light to Moderate Intensity Exercise throughout Pregnancy." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/38335.

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Regular physical activity is recommended in healthy pregnancies and has been shown to mitigate adverse pregnancy outcomes. Despite the benefits, many women do not adhere to the recommendations due to concerns of exercise-induced heat stress and the dangers it could pose to the developing fetus. While the majority of the concerns raised are not grounded in evidence, currently there are no studies that directly examine the isolated influence of pregnancy on metabolic heat production resulting from physical activity. Additionally, despite the prevalent use of psycho-physical tools in clinical set

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14

Xu, Yu. "Light intensity attenuation-based fibre-optic chemical sensors : theoretical analyses and design studies." Thesis, University of Leicester, 2000. http://hdl.handle.net/2381/30184.

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In the thesis light intensity attenuation-based fibre-optic chemical sensors are investigated. The investigation proceeds along two lines: theoretical analyses and design studies. Both intrinsic and extrinsic types of sensors are discussed from both aspects. The theoretical analyses are concentrated on the construction of theoretical models and numerical calculations, which were previously not well developed but have been attracting a great deal of attention of researchers for some time. Under this topic, fibre-optic evanescent wave absorption sensors and fibre-optic surface plasmon resonance

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Skinner, Daniel George. "A sudden blaze of light : low intensity democracy in Hong Kong, 1978-1997." Title page, abstract and table of contents only, 1998. http://web4.library.adelaide.edu.au/theses/09ARM/09arms628.pdf.

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Bibliography: leaves 269-327. "This dissertation investigates the political reforms initiated by the Hong Kong colonial government between 1978-1996 in light of Hong Kong's reversion to Chinese sovereignty on Juy 1, 1997." --Abstract

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16

Tinsley, Matthew. "Experimenter familiarity and light intensity effects on open field behaviour of Rattus norvegicus /." Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09SPS/09spst592.pdf.

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17

Çelik, Selen. "Living withlow intensity and warm light:Designing light in living roomsthrough Nordic daylight qualities." Thesis, KTH, Ljusdesign, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280063.

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This thesis concentrates on lighting preferencesin living rooms concerning Nordic lightqualities in winter. Living rooms are spaceswhere we relax, communicate, eat, gather andread. Lighting in living rooms gives hints aboutour perception and character.Nordic countries, there is something uniquethan others; use of light and daylight sensiblyand wisely. In the Nordic countries, where thelight and darkness change dramatically betweenthe seasons, the transitions have a specialsignificance. Higher the latitude, twilight hoursare getting longer, and it creates a homogeneoustransition between dayligh

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Carter, Robert Hansbrough. "Transmitted light intensity as a nondestructive evaluation technique for glass/epoxy composite laminates." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-11242009-020334/.

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19

Envall, Linus. "Geolocation by Light using Target Tracking." Thesis, Linköpings universitet, Reglerteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-95609.

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In order to understand the migration patterns of migrating birds, it is necessary to understand whenand where to they migrate. Many of these birds are very small and thus cannot carry heavy sensors;hence it is necessary to be able to perform positioning using a very small sensor. One way to do this isto use a light-intensity sensor. Since the sunrise and sunset times are known given time and position onthe earth, it is possible to determine the global position using light intensity. Light intensity increasesas the sun rises. Data sets from several calibration sensors, mainly from different loc

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20

Beffa, James C., and T. Koryu Ishii. "MILLIMETER WAVE RADIO RESPONDER FOR REMOTE SENSING OF SURFACE CONDUCTIVITY AND LASER LIGHT INTENSITY." International Foundation for Telemetering, 1986. http://hdl.handle.net/10150/615543.

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International Telemetering Conference Proceedings / October 13-16, 1986 / Riviera Hotel, Las Vegas, Nevada<br>A millimeter wave radio responder was evaluated as a remote sensor of surface conductivity and laser light intensity. A 10 mm CdSe photocell was illuminated by a 1/4 mW, 632.8 nm He-Ne laser light. The photocell was not connected to anywhere. The terminals were left open. The photocell was interrogated by a remotely placed millimeter wave radio responder operated with the frequency of 69.6 GHz and the transmitter power of 3 mW. The millimeter wave radio responder was able to sense the

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21

Li, Tsai-Chi. "CRYPTOCHROME 1 (CRY1) Is Critical in Mediating Developmental Process in Response to Light Intensity." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1244019693.

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22

Gaire, Rashmi. "Effect of light intensity on size hierarchy of redroot pigweed and transmission of far-red light through leaves of selected species." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/50037.

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In order to investigate the effects of light intensity on (1) growth, morphology, and size hierarchy of Amaranthus retroflexus, and (2) transmission of far-red (FR) light through leaves lambsquarters (Chenopodium album), redroot pigweed (A. retroflexus) and bush beans (Phaseolus vulgaris), field experiments were conducted using a randomized complete block design with five replications per treatment. Plants were grown under four light intensities (22%, 33%, 55% and 100% of full sunlight) using 3, 2, 1 and 0 layers of mesh screen, respectively. These treatments represented approximately 400, 600

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23

Moafa, Majid Ahmed M. "Quantifying Risk Factors for Myopia: Instrument Validation and Establishing Dosage for Light Intensity and Duration." Thesis, The University of Sydney, 2018. https://hdl.handle.net/2123/21273.

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Aims Given the increasing prevalence of myopia in the last 50 years all around the globe which established myopia as a major issue of public health concern, this thesis highlights myopia occurrence, its prevalence, its measurement and prevention strategies through the lens of a few environmental factors, particularly the protective effect of time spent outdoors. Hence, this thesis focuses on exploring, investigating, and developing an accurate and cost-effective measure for quantifying the risk factors for myopia, especially based on the time spent outdoors. Methods I developed an electronic

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24

Tonetto, Aurélio Fajar. "Efeitos da irradiância e da composição espectral da luz sobre o estabelecimento e desenvolvimento de comunidades de macroalgas lóticas em substratos artificiais /." Rio Claro : [s.n.], 2010. http://hdl.handle.net/11449/87902.

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Orientador: Ciro Cesar Zanini Branco<br>Banca: Orlando Necchi Junior<br>Banca: Carla Ferragut<br>Resumo: Os efeitos provocados pela variação quantitativa e qualitativa da luz incidente sobre a estrutura das comunidades de macroalgas lóticas em riachos da região Centro-Sul do estado do Paraná foram investigados a partir de experimentos utilizando-se amostradores com substratos artificiais que modulam a quantidade e qualidade da luz incidente. Os resultados reveleram que as respostas das divisões algais isoladamente foram mais claras do que àquelas observadas para as comunidades de macroalgas co

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Strath, Scott J. "The effect of a light-moderate versus hard exercise intensity on health and fitness benefits." Virtual Press, 1998. http://liblink.bsu.edu/uhtbin/catkey/1115726.

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The purpose of this study was to determine the effect of a light-moderate versus hard exercise intensity on health and fitness benefits in a previously sedentary population. Twenty-six subjects, 17 male (mean age 45 + 3 yrs), 9 female (mean age 48 + 3 yrs) with at least one coronary artery disease risk factor volunteered to participate in this study. Subjects underwent laboratory testing comprising of, resting heart rate and blood pressure, body composition, blood lipid analysis and aerobic capacity (V02 ), prior to and 22-32 weeks after participating > 2 days per week in the Adult Physical Fi

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Hutchison, Steven J. "An analysis of light infantry effectiveness in mid-to-high intensity conflict deliberate attack missions." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/27967.

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This thesis documents a simulation study of light infantry operations in mid-to-high intensity conflict. An initial data analysis is performed using deliberate attack missions conducted at tile U.S. Army National Training Center (NTC) and compares the measures of effectiveness (MOE) of fully modernized heavy forces to the effectiveness of heavy forces operating with an attached light infantry battalion. This analysis includes development of a light infantry attack simulation which employed object oriented programming in MODSIM II. The simulation models light infantry operations in the NTC envi

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Prayitno, Dwi Sunarti. "The effects of colour and intensity of light on the behaviour and performance of broilers." Thesis, Bangor University, 1994. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387208.

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Murdoch, Lynne Elizabeth. "An investigation into the use of High-Intensity Narrow Spectrum light as a decontamination technology." Thesis, University of Strathclyde, 2010. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=22623.

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Control of contaminant microorganisms is important in many different settings, particularly in healthcare and food production and processing, where environmental contamination by pathogenic microorganisms can be detrimental to human health. In the UK, the number of hospital-associated infections (HAI) and food-related illnesses continues to rise. As such, alternative and complementary disinfection and decontamination technologies are constantly being sought. This investigation examined the inactivation efficacy of High-Intensity Narrow Spectrum Light (HINS-light) on a wide range of microorgani

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29

Franz, Mark L. "Local agency traffic sign retroreflectivity case study and model of observed traffic sign light intensity." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10473.

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Thesis (M.S.)--West Virginia University, 2009.<br>Title from document title page. Document formatted into pages; contains viii, 85 p. : ill. (some col.), col. map. Includes abstract. Includes bibliographical references (p. 79-82).

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Yang, Ying. "Effects of Temperature, Light Intensity and Quality, Carbon Dioxide, and Culture Medium Nutrients on Growth and Lipid Production of Ettlia oleoabundans." Digital WPI, 2014. https://digitalcommons.wpi.edu/etd-dissertations/42.

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Ettlia oleoabundans, a freshwater green microalga, was grown under different environmental conditions to study its growth, lipid yield and quality for a better understanding of the fundamental physiology of this oleaginous species. E. oleoabundans showed steady increase in biomass under low temperature and low light intensity, and at high temperature lipid cell content significantly increased independent of nitrate depletion. Studies on light quality showed that red light treatment did not change the biomass concentration, but stimulated lipid yield especially oleic acid, the most desirable bi

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31

Kjellsson, Lindblom Tor. "Relativistic light-matter interaction." Doctoral thesis, Stockholms universitet, Fysikum, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-147749.

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During the past decades, the development of laser technology has produced pulses with increasingly higher peak intensities. These can now be made such that their strength rivals, and even exceeds, the atomic potential at the typical distance of an electron from the nucleus. To understand the induced dynamics, one can not rely on perturbative methods and must instead try to get as close to the full machinery of quantum mechanics as practically possible. With increasing field strength, many exotic interactions such as magnetic, relativistic and higher order electric effects may start to play a s

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32

Snyman, LW, Plessis M. Du, and H. Aharoni. "Injection-Avalanche-Based nþpn Silicon Complementary Metal Oxide–Semiconductor Light-Emitting Device (450 – 750 nm) with 2-Order-of-Magnitude Increase in Light Emission Intensity." Japanese Journal of Applied Physics, 2007. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000813.

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In this paper, we report on an increase in emission intensity of up to 10 nW/mm2 that has been realized with a new novel two junction, diagonal avalanche control, and minority carrier injection silicon complementary metal–oxide–semiconductor (CMOS) light emitting device (LED). The device utilizes a four-terminal configuration with two embedded shallow nþp junctions in a p substrate. One junction is kept in deep-avalanche and light-emitting mode, while the other junction is forward biased and minority carrier electrons are injected into the avalanching junction. The device has been realized usi

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Wong, Karen K. L. "Intra-pulpal thermal effects of dental lasers and high-intensity lights during light-activated tooth whitening and resin polymerisation on human teeth /." [St. Lucia, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16897.pdf.

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34

Tough, Murray William. "Low-intensity laser light and the recovery from exhaustive eccentric exercise in human elbow flexor muscles." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ52956.pdf.

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35

Huseby, Oddmund. "Spatio-temporal variation in moose-vehicle collisions: the effect of varying traffic intensity and light conditions." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for biologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-21419.

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In order to find effective mitigating measures against the large number of moose-vehicle collisions (MVCs) in the Nordic countries, it is important to learn more about the underlying mechanisms causing their spatio-temporal variation. While many studies have looked at the effects of varying moose density, traffic volume and weather conditions on the seasonal and yearly variation in MVCs, previous research has rarely studied the same questions based on MVC data collected at the temporal scales of date and hour. However, because the circadian activity of moose is closely related to the variation

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36

Paulson, Courtney L. "Using the Haar-Fisz wavelet transform to uncover regions of constant light intensity in Saturn's rings." Honors in the Major Thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1473.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.<br>Bachelors<br>Sciences<br>Statistics

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37

Bryant, Marion Jane. "The influence of soil fertility and light intensity on field layer development in urban secondary woodlands." Thesis, University of Wolverhampton, 2003. http://hdl.handle.net/2436/96313.

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Dias, Rodolfo Liporoni. "Visual ecology of nocturnal bees: how light intensity affects foraging activity in cambuci, a neotropical Myrtaceae." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/41/41134/tde-21082018-082154/.

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The foraging activity of day-active bees often rely on flower availability, light intensity and temperature. However, some bees developed a nocturnal habit and fly during the dusk, dawn and night. We still do not know how these bees cope with environmental factors, especially dimmer light levels, to explore flower earlier than their diurnal relatives. Given that typical bee apposition compound eyes work better in brighter environments and function in their limits in dim-light conditions, we can expect a larger dependence of light intensity for nocturnal groups. Nocturnal and crepuscular bees a

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Thanapisudwong, Thatchai. "The Impact of Raceway Mixing and Light Penetration on Algal Growth." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1479910640426105.

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Luk, Wai-ming Albert, and 陸偉明. "Association of light exposure intensity with the quality of sleep and behavioral symptoms in Chinese Alzheimer's disease patients." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2014. http://hdl.handle.net/10722/209551.

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Introduction: Dementia is an age-associated neurodegenerative disorder characterized by a progressive loss of neuro-cognitive function and the emergence of a wide variety of behavioral symptoms. Alzheimer's disease (AD) is the most common types of dementia. Sleep disturbances in patients with Alzheimer's disease is common and previous studies from North America, Europe and Japan reported light therapy could improve the sleep circadian rhythm ( rest-activity) disturbances in AD. However, there was no previous Chinese study on light exposure and sleep quality nor the circadian rhythm in Chines

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Edmonds, Anne. "Light as surface and intensity." Thesis, 2003. http://handle.uws.edu.au:8081/1959.7/561.

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Light Intensity and Surface is the title of this PhD art exhibition where I explore through paintings, the world of my own encounter with the radiant light of the Linear Accelerator used in treatment of women with breast cancer. This engagement with the world of light technology encompasses oncologists, physicists and women who extended their personal experience to inform my artwork and contribute to the theoretical connections made in this thesis. The contribution of this thesis lies in how the lecture The Origin of the Work of Art by philosopher Martin Heidegger can be applied to a reading o

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42

Lee, Pin-Hsien, and 李品賢. "Light Intensity Measurement of Different LED Lights in Cylindrical Tank." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/6y67xr.

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碩士<br>國立虎尾科技大學<br>機械與機電工程研究所<br>101<br>Photosynthetic bacteria are the most efficient producers of hydrogen, which can be cultured as carbon dioxide. In order to understand the effects of photosynthetic bacteria in different media (air, water, and a gas-liquid mixture) for hydrogen production, three kinds of light-emitting diode lights, red, white, and blue, respectively, are used to simulate light intensity in the space of cylindrical tank where photosynthetic bacteria are cultured inside. And different flow rates of air are injected to explore the LED light intensity distribution in the tank

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Ganesh, Kittur V. "Discomfort glare: variation of light intensity." 1986. http://hdl.handle.net/2097/22110.

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Du, Mao-feng, and 杜茂楓. "Laser direct writer with light intensity modulation." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/99858019108303321159.

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碩士<br>國立中央大學<br>機械工程研究所<br>90<br>Traditionally, the diffractive optical element (ODE) is made by using the multiple binary-level lithography processes to enhance the diffractive efficiency. Due to the multiple exposures, the manufactory error will be included and more complicate processes is need to be considered. Therefore, to overcome these problems, the grey level mask can be used, in which only one exposure is needed to fabricate the optical element. This project presents that a laser machine with light intensity modulation to fabricate grey level masks. In the writer system, a solid-sta

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Chien, Jo-Fan, and 簡若帆. "Encoding the Light Intensity in Retina’s Firing Rate." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/ftzq3v.

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碩士<br>國立臺灣大學<br>物理學研究所<br>105<br>A retina receives light stimulation and transforms the detected signal into spikes, which are then transmitted to the brain. However, how light stimulation information is conveyed by spike trains is not fully understood. Here, we utilize multi-electrode array (MEA) to record firings of the Bullfrog’s retinal ganglion cells (RGCs) under a time-varying whole field light stimulation I(t). Our goal is to understand the information shared between stimulus light intensity (I) and the firing rate (r) of RGCs. Our result shows that r will be affected by the mean intens

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Chien-Chih, Lan, and 藍建智. "Cancer Cell Migration in Blue-light Intensity Gradients." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/98086648089740505395.

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碩士<br>國立陽明大學<br>生醫光電研究所<br>103<br>We project different optical micro-pattern of a 473 nm blue light laser with various intensity gradients on a single lung cancer cell. We investigate the role of reactive oxygen species (ROS) in the mechanism of blue light induced cell migration behavior. A spatial light modulator (SLM) is used to generate 473 nm laser pattern imaged onto the focal plane of a microscope objective. We use a linear, a quadratic and a quartic optical intensity gradient to irradiate an individual lung cancer cell (A549). To compare with the cancer cell migration under different

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Ku, Yi-Te, and 古義德. "Automatic Room Light Intensity Detection and Control Using a Microprocessor and Light Sensors." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/80823678697407956394.

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碩士<br>輔仁大學<br>電子工程學系<br>97<br>In this paper we propose two designs using both a microprocessor and light sensors for automatic room light detection and control to save energy. The purpose of our designs is to lower the human judgment. By using the RF technology, the lights in a typical home can be controlled without wire lines. The systems are both designed to be low cost and low power consumption due to being microprocessor-based. As the first of our designs we will introduce the HLCM (Home Light Control Module) which will be installed in every light fixture of a family. The HLCM detects if a

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Hong, Ya-Ling, and 洪雅玲. "Effect of Light Intensity on Growth of Nannochloropsis sp." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/49672426358925984766.

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碩士<br>大葉大學<br>工學院碩士在職專班<br>102<br>The effect of light intensity on the batch growth of Nannochloropsis sp.was investigated in this study. The Haldane model for growth of Nannochloropsis sp.was established for growth simulation using volumetric productivity (g/l/d) and area productivity (g/m2/d) as criterions to evaluate cultivation performance at different biomass concentrations and pond depths. The results are shown below: 1. The highest biomass concentration and specific growth rate were obtained at the light intensity of 12000 Lux. 2. The Haldane model for light intensity on growth of Nanno

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Donelan, Matthew J. "Light intensity relations and the growth the ostrich fern /." 1995. https://scholarworks.umass.edu/theses/3450.

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Hsiao, Yao-Chung, and 蕭堯中. "Study of Goniophotometry on Relative Intensity of Light Sources." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/97677760210969659017.

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碩士<br>國立中央大學<br>光電科學與工程學系<br>104<br>The relative intensity distribution curve is necessary for engineers to design optical system. Traditionally we use goniophotometer to obtain data. It works but takes much time. Much necessary space also costs too high. In such a way, users are concerned about the emergence of alternatives. With great progress both on the software and the hardware in recent years, the possibility of imaging luminance measurement device (ILMD) is getting promising. Through theory research and experiments, this study presents a systematic design includes mechanical design and

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