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Cornell University
1.
Uesugi, Aaron.
Mechanisms Of Inactivation And Microbial Inactivation Kinetics In The Pulsed Light Treatment Of Foods.
Degree: PhD, Food Science and Technology, 2011, Cornell University
URL: http://hdl.handle.net/1813/29214
► Pulsed Light technology utilizes high powered pulses of broad spectrum light to reduce microorganisms on food and food contact surfaces. While previous research has shown…
(more)
▼ Pulsed
Light technology utilizes high powered pulses of broad spectrum
light to reduce microorganisms on food and food contact surfaces. While previous research has shown Pulsed
Light to be effective at reducing various microorganisms on a variety of substrates, a better understanding of inactivation kinetics, pairing Pulsed
Light with other antimicrobial treatments, and the cellular effect of Pulsed
Light treatment will provide better insight into potential opportunities for future use of this technology. Inactivation of Listeria innocua in liquid suspensions and on the surface of stainless steel showed pronounced tailing. The utilization of the Weibull model accurately predicted inactivation in clear liquids but overestimated Pulsed Light‟s effectiveness on stainless steel surfaces where complex surface properties as well as inoculum size were of significant influence. The combination of Pulsed
Light with the antimicrobial nisin was able to reach reductions of 4 to 5 log CFU/sausage of Listeria on the surface of sausages, extending storage from 8 day for individual treatments to 28 to 48 days suggesting that Pulsed
Light in combination with additional antimicrobials can effectively reduce surface contamination of ready-to-eat foods. To evaluate the potential for repeated Pulsed
Light exposure to lead to changes in growth and resistance behavior of survivors, L. monocytogenes, L. innocua, and E. coli were exposed to both low (1.1 J/cm2) and high (10.1 J/cm2) levels of Pulsed
Light and survivors were recovered and subsequently treated for 10 cycles of exposure and recovery. Isolates of all three organisms did not show changes in growth kinetics or resistance after multiple exposures when compared to untreated cells at either low or high fluence levels. Reduction levels of 3-4 and 5-6 log CFU/ml were obtained after exposure to 1.1 and 10.1 J/cm2, respectively, for the untreated control and the repeatedly treated and recovered isolates. Whole genome microarray analysis showed increased transcription levels for stress related proteins, motility, and transcriptional regulators following both Pulsed
Light and UV
light. Removing the UV spectrum of Pulsed
Light lead to no differences between treated and untreated samples and showed a downregulation in motility and cell membrane associated genes as well as no increases in stress response genes following exposure, suggesting that the mechanism of inactivation is related to the UV portion of Pulsed
Light and the visible and NIR spectrum do not play a role in cell inactivation.
Advisors/Committee Members: Moraru, Carmen I (chair), Worobo, Randy W. (committee member), Novakovic, Andrew Milovan (committee member).
Subjects/Keywords: Pulsed Light; UV Light; Listeria
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APA (6th Edition):
Uesugi, A. (2011). Mechanisms Of Inactivation And Microbial Inactivation Kinetics In The Pulsed Light Treatment Of Foods. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/29214
Chicago Manual of Style (16th Edition):
Uesugi, Aaron. “Mechanisms Of Inactivation And Microbial Inactivation Kinetics In The Pulsed Light Treatment Of Foods.” 2011. Doctoral Dissertation, Cornell University. Accessed March 04, 2021.
http://hdl.handle.net/1813/29214.
MLA Handbook (7th Edition):
Uesugi, Aaron. “Mechanisms Of Inactivation And Microbial Inactivation Kinetics In The Pulsed Light Treatment Of Foods.” 2011. Web. 04 Mar 2021.
Vancouver:
Uesugi A. Mechanisms Of Inactivation And Microbial Inactivation Kinetics In The Pulsed Light Treatment Of Foods. [Internet] [Doctoral dissertation]. Cornell University; 2011. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/1813/29214.
Council of Science Editors:
Uesugi A. Mechanisms Of Inactivation And Microbial Inactivation Kinetics In The Pulsed Light Treatment Of Foods. [Doctoral Dissertation]. Cornell University; 2011. Available from: http://hdl.handle.net/1813/29214

University of New South Wales
2.
Mallo, Neil.
Visible light-responsive photoswitches.
Degree: Chemistry, 2019, University of New South Wales
URL: http://handle.unsw.edu.au/1959.4/61724
► The structure and properties of photochromic compounds can be altered with light. These photoswitches are ideally addressed with visible light. Various switching motifs are known,…
(more)
▼ The structure and properties of photochromic compounds can be altered with
light. These photoswitches are ideally addressed with visible
light. Various switching motifs are known, each with a different response to
light. Donor-Acceptor Stenhouse Adducts (DASAs) re-emerged as visible
light responsive photoswitches in 2014, and have already found numerous applications. These molecules can be isomerised with green
light between a coloured linear form and a colourless cyclic form.One of the major limitations of these compounds was the range of solvents in which reversible isomerisation is possible. Reversible switching of the initially reported DASAs was only demonstrated in apolar solvents. With the work described in this thesis, isomerisation in a wide range in polar organic solvents is possible. The introduction of aniline-based DASAs, recognised as ‘second generation’ DASAs, led to reversible switching possible in chloroform and acetonitrile. However, the improved photocyclisation comes at the cost of the thermal equilibrium, and large fractions of the cyclic isomer remain present in the dark. Further advances towards switching in water have been made by altering the acceptor group and the first examples of reversible isomerisation in the polar solvents ethanol and DMSO are demonstrated.Establishing a structure-function relationship on ‘first generation’ DASAs has found minor changes in the structure can render these compounds excellent switches in common solvents such as chloroform. This work provides a guideline for the rational design of new compounds. The minor isomers found in solution have been identified and their role towards cyclisation has been studied. Although overlooked in the literature, these minor linear isomers could be part of an alternative path of isomerisation. In solution the cyclic isomer can be present as two tautomeric structures, depending on amine donor, solvent and concentration. For some applications the delicate difference between the two tautomers may have a significant effect on the functionality of the switch, and rational design of the DASA can vastly improve photoinduced changes.
Advisors/Committee Members: Beves, Jonathon, Chemistry, Faculty of Science, UNSW, Thordarson, Pall, Chemistry, Faculty of Science, UNSW.
Subjects/Keywords: Light-responsive; Photoswitch; Visible light
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
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APA (6th Edition):
Mallo, N. (2019). Visible light-responsive photoswitches. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/61724
Chicago Manual of Style (16th Edition):
Mallo, Neil. “Visible light-responsive photoswitches.” 2019. Doctoral Dissertation, University of New South Wales. Accessed March 04, 2021.
http://handle.unsw.edu.au/1959.4/61724.
MLA Handbook (7th Edition):
Mallo, Neil. “Visible light-responsive photoswitches.” 2019. Web. 04 Mar 2021.
Vancouver:
Mallo N. Visible light-responsive photoswitches. [Internet] [Doctoral dissertation]. University of New South Wales; 2019. [cited 2021 Mar 04].
Available from: http://handle.unsw.edu.au/1959.4/61724.
Council of Science Editors:
Mallo N. Visible light-responsive photoswitches. [Doctoral Dissertation]. University of New South Wales; 2019. Available from: http://handle.unsw.edu.au/1959.4/61724
3.
Lanman, Douglas Robert.
Mask-based Light Field Capture and Display.
Degree: PhD, Electrical Science and Computer
Engineering, 2011, Brown University
URL: https://repository.library.brown.edu/studio/item/bdr:11197/
► This dissertation describes light-efficient methods for capturing and displaying 3D images using thin, optically-attenuating masks. Light transport is modeled, under geometrical optics, as a 4D…
(more)
▼ This dissertation describes
light-efficient methods
for capturing and displaying 3D images using thin,
optically-attenuating masks.
Light transport is modeled, under
geometrical optics, as a 4D function: the
light field; this
function records the amount of
light traveling through any point
along any direction. Conventional photographs only record a 2D
projection of the incident
light field. Each image point is
produced by integrating over the full hemisphere of incidence
angles. Similarly, conventional displays only approximate a diffuse
surface, where the amount of
light leaving any point is constant
over the full hemisphere of viewing angles. Thus, conventional
cameras and displays only support 2D images, for which the
perception of scene depth is lost.3D images can be captured and
displayed by including masks in conventional camera and display
architectures. Parallax barriers are one example; a mask containing
a uniform array of slits is placed slightly in front of a
conventional display. This mask only allows certain disjoint
display regions to be visible from each viewpoint. 3D image capture
is achieved by placing a similar mask close to a sensor. In both
cases, 3D images come at the cost of decreased resolution and
brightness.This dissertation presents a first-principles analysis
of dual-layer camera and display architectures, wherein the first
layer is a conventional sensor or display and the second layer is a
mask. Novel masks are developed that facilitate 3D image capture
and display, outperforming conventional parallax barriers in terms
of total
light transmission and
light field resolution. For 3D
capture, a family of static, periodic, non-adaptive masks are
derived from a frequency-domain analysis. For 3D display, a linear
algebraic analysis reveals a set of time-multiplexed, aperiodic,
adaptive masks. Four motivating applications are presented: digital
photography, single-shot visual hull reconstruction, depth-sensing
LCDs, and 3D display using dual-stacked LCDs.
Advisors/Committee Members: Taubin, Gabriel (Director), Mundy, Joseph (Reader), Raskar, Ramesh (Reader).
Subjects/Keywords: Light Fields
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lanman, D. R. (2011). Mask-based Light Field Capture and Display. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:11197/
Chicago Manual of Style (16th Edition):
Lanman, Douglas Robert. “Mask-based Light Field Capture and Display.” 2011. Doctoral Dissertation, Brown University. Accessed March 04, 2021.
https://repository.library.brown.edu/studio/item/bdr:11197/.
MLA Handbook (7th Edition):
Lanman, Douglas Robert. “Mask-based Light Field Capture and Display.” 2011. Web. 04 Mar 2021.
Vancouver:
Lanman DR. Mask-based Light Field Capture and Display. [Internet] [Doctoral dissertation]. Brown University; 2011. [cited 2021 Mar 04].
Available from: https://repository.library.brown.edu/studio/item/bdr:11197/.
Council of Science Editors:
Lanman DR. Mask-based Light Field Capture and Display. [Doctoral Dissertation]. Brown University; 2011. Available from: https://repository.library.brown.edu/studio/item/bdr:11197/

Addis Ababa University
4.
Yibeltal, Siyum.
Two-Mode Coherent and Subharmonic Light Beams
.
Degree: 2012, Addis Ababa University
URL: http://etd.aau.edu.et/dspace/handle/123456789/1424
► Applying c-number Langevin equations, we have calculated the Q function for the two- mode coherent and subharmonic light. We have then determined the Q function…
(more)
▼ Applying c-number Langevin equations, we have calculated the Q function for the two-
mode coherent and subharmonic
light. We have then determined the Q function for the
superposition of these two
light beams. With the aid of the pertinent Q functions, we
have obtained the mean and variance of the photon number sum and di erence for the
two-mode coherent
light, the two-mode subharmonic
light, and the superposition of the
two-mode coherent and subharmonic
light beams.
We have found that the signal and idler modes are separately in chaotic states. We
have also found that the mean photon number for the superposition of two-mode coherent
and subharmonic
light turns out to the sum of the mean photon number of the individual
light beams.
v
Advisors/Committee Members: Dr. Fesseha Kassahun (advisor).
Subjects/Keywords: Light Beams
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Yibeltal, S. (2012). Two-Mode Coherent and Subharmonic Light Beams
. (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/1424
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Yibeltal, Siyum. “Two-Mode Coherent and Subharmonic Light Beams
.” 2012. Thesis, Addis Ababa University. Accessed March 04, 2021.
http://etd.aau.edu.et/dspace/handle/123456789/1424.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Yibeltal, Siyum. “Two-Mode Coherent and Subharmonic Light Beams
.” 2012. Web. 04 Mar 2021.
Vancouver:
Yibeltal S. Two-Mode Coherent and Subharmonic Light Beams
. [Internet] [Thesis]. Addis Ababa University; 2012. [cited 2021 Mar 04].
Available from: http://etd.aau.edu.et/dspace/handle/123456789/1424.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Yibeltal S. Two-Mode Coherent and Subharmonic Light Beams
. [Thesis]. Addis Ababa University; 2012. Available from: http://etd.aau.edu.et/dspace/handle/123456789/1424
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Guelph
5.
Semeniuk, Kent.
Gazing Up: An Exploration of Municipal Night Lighting Practices Amongst Six Canadian Municipalities.
Degree: Master of Landscape Architecture, School of Environmental Design and Rural Development, 2014, University of Guelph
URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8082
► Light pollution is broadly defined as the unnecessary illumination of the nocturnal environment. Light pollution is a pervasive phenomena shown to have harmful consequences for…
(more)
▼ Light pollution is broadly defined as the unnecessary illumination of the nocturnal environment.
Light pollution is a pervasive phenomena shown to have harmful consequences for both the biotic and abiotic components of an ecosystem. While some municipalities have begun to address the environmental and economic costs of
light pollution, most have not. The goal of this study was to investigate current municipal night lighting practices for six selected Canadian municipalities with the aim of determining their policies and practices for night lighting. Semi-structured interviews with key informants were conducted and analyzed using a mixed methods approach that included a thorough literature review. The results indicate that rising energy costs, aging infrastructure and the lighting industry are driving the majority of changes taking place in adapting municipalities while most municipalities remain content with status quo. The research conducted led to guideline improvements for municipal night lighting in today’s municipalities.
Advisors/Committee Members: Perkins, Nathan (advisor).
Subjects/Keywords: Light Pollution
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Semeniuk, K. (2014). Gazing Up: An Exploration of Municipal Night Lighting Practices Amongst Six Canadian Municipalities. (Masters Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8082
Chicago Manual of Style (16th Edition):
Semeniuk, Kent. “Gazing Up: An Exploration of Municipal Night Lighting Practices Amongst Six Canadian Municipalities.” 2014. Masters Thesis, University of Guelph. Accessed March 04, 2021.
https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8082.
MLA Handbook (7th Edition):
Semeniuk, Kent. “Gazing Up: An Exploration of Municipal Night Lighting Practices Amongst Six Canadian Municipalities.” 2014. Web. 04 Mar 2021.
Vancouver:
Semeniuk K. Gazing Up: An Exploration of Municipal Night Lighting Practices Amongst Six Canadian Municipalities. [Internet] [Masters thesis]. University of Guelph; 2014. [cited 2021 Mar 04].
Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8082.
Council of Science Editors:
Semeniuk K. Gazing Up: An Exploration of Municipal Night Lighting Practices Amongst Six Canadian Municipalities. [Masters Thesis]. University of Guelph; 2014. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8082

University of Ottawa
6.
Bouchard, Frédéric.
Classical and Quantum Dynamics of Twisted Light
.
Degree: 2016, University of Ottawa
URL: http://hdl.handle.net/10393/35209
► This thesis encompasses a body of experimental work on the dynamics of twisted light. We first deal with the generation and reconstruction of twisted light…
(more)
▼ This thesis encompasses a body of experimental work on the dynamics of twisted light. We first deal with the generation and reconstruction of twisted light for applications in classical and quantum physics, respectively. In the first case, we present a novel device that has the ability to generate twisted light in a manner that is completely wavelength-independent. Such a device may find applications in various fields of classical physics, ranging from nano to astronomical imaging. In the second work, we study the dynamics of twisted light in the case of laser-induced radial birefringence. This is done by studying the optical features resulting from elastic properties of silver-doped glass. In the last work on generation of twisted light, we present a nano-scale twisted light generator having the capacity to generate an optical mode with a controllable number of twists. In the context of quantum communication and quantum computations, this device has a great potential due to its small size and integrability. In the second part of the thesis, we study the propagation of twisted light both at the classical and quantum regime. In the first case, we observe exotic group velocities of light pulses in vacuum due to the twisting of its wavefront. In the second case, we study the effect of quantum decoherence of twisted light due to the coupling of photonic internal degrees of freedom. We present a technique to recover the lost coherence, which we name recoherence, by a practical unitary transformation.
Subjects/Keywords: Twisted light
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bouchard, F. (2016). Classical and Quantum Dynamics of Twisted Light
. (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/35209
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Bouchard, Frédéric. “Classical and Quantum Dynamics of Twisted Light
.” 2016. Thesis, University of Ottawa. Accessed March 04, 2021.
http://hdl.handle.net/10393/35209.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bouchard, Frédéric. “Classical and Quantum Dynamics of Twisted Light
.” 2016. Web. 04 Mar 2021.
Vancouver:
Bouchard F. Classical and Quantum Dynamics of Twisted Light
. [Internet] [Thesis]. University of Ottawa; 2016. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10393/35209.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bouchard F. Classical and Quantum Dynamics of Twisted Light
. [Thesis]. University of Ottawa; 2016. Available from: http://hdl.handle.net/10393/35209
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidad de Cantabria
7.
Sanz Casado, Juan Marcos.
Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects.
Degree: 2011, Universidad de Cantabria
URL: http://hdl.handle.net/10902/1565
► RESUMEN: Definir los parámetros de polarización de la luz procedente de una muestra aporta una mayor información sobre las propiedades de ésta que la simple…
(more)
▼ RESUMEN: Definir los parámetros de polarización de la luz procedente de una muestra aporta una mayor información sobre las propiedades de ésta que la simple medida de la intensidad luminosa difundida. Cuando un haz luminoso sufre una perturbación debida a cualquier interacción con un medio, los campos electromagnéticos del haz incidente y el del haz emergente, expresados en términos de los parámetros de Stokes, pueden ser relacionados mediante la denominada matriz de Mueller. En este aspecto, el conocer la evolución de los parámetros de dicha matriz del sistema, nos permitiría definir cómo se comporta éste frente a la luz incidente. Para tal objetivo, se ha puesto a punto un polarímetro dinámico basado en técnicas de Transformada de Fourier, que permite determinar con una sola medida los 16 elementos de la matriz de Mueller. Ésta nos mostrará los cambios sufridos por la polarización del haz incidente debido a su interacción con una muestra problema.
Aplicando el método de Descomposición Polar, se puede ver que cualquier sistema puro, con matriz de Mueller M, responde a la siguiente relación: M=R*D, donde R y D simbolizan las matrices de Mueller de un medio Retardador ideal y de un medio Diatenuador ideal, respectivamente. En una versión extendida de éste teorema, teniendo en cuenta que no todos los medios son ideales, sino que hay medios en los que aparecen efectos de despolarización, la descomposición de la matriz de Mueller daría lugar a: M=Z*R*D, tomando Z como la matriz de Mueller de un sistema despolarizante. De esta forma, utilizando algebra matricial, podemos descomponer la matriz de un sistema problema, en matrices de menor complejidad, con un estricto sentido físico.
Partiendo de éstos resultados teóricos, y por medio del uso del polarímetro dinámico para la caracterización polarimétrica de los sistemas, se han analizado muestras de diversos tipos: superficies planas microestructuradas, para evaluar el efecto de la composición, tamaño e interacción; suspensiones de micropartículas y nanopartículas en coloide, para caracterizar su tamaño y composición; y sustancias quirales en medios turbios (en éste aspecto, recientemente ha sido demostrada la validez de éste método para el análisis in situ de tejidos biológicos). Asimismo, se han caracterizado componentes ópticos y polarimétricos por transmisión y reflexión, demostrando la validez del método. Finalmente se han llevado a cabo simulaciones computacionales a fin de estudiar patrones de comportamiento en sistemas complejos por medio del método de Descomposición Polar.
Advisors/Committee Members: Saiz Vega, José María (advisor), Universidad de Cantabria (other).
Subjects/Keywords: Light scattering
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sanz Casado, J. M. (2011). Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects. (Doctoral Dissertation). Universidad de Cantabria. Retrieved from http://hdl.handle.net/10902/1565
Chicago Manual of Style (16th Edition):
Sanz Casado, Juan Marcos. “Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects.” 2011. Doctoral Dissertation, Universidad de Cantabria. Accessed March 04, 2021.
http://hdl.handle.net/10902/1565.
MLA Handbook (7th Edition):
Sanz Casado, Juan Marcos. “Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects.” 2011. Web. 04 Mar 2021.
Vancouver:
Sanz Casado JM. Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects. [Internet] [Doctoral dissertation]. Universidad de Cantabria; 2011. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10902/1565.
Council of Science Editors:
Sanz Casado JM. Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects. [Doctoral Dissertation]. Universidad de Cantabria; 2011. Available from: http://hdl.handle.net/10902/1565
8.
Pottakis, Nikolas.
Η φωτιά και το φως: στο μύθο, στη φιλοσοφία, στην τραγωδία και στη ζωή της πόλης.
Degree: 2015, National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ)
URL: http://hdl.handle.net/10442/hedi/35452
► The thesis analyzes the role of fire and light:1st: In the Myth: It refers to the myths of fire (Prometheus, Hydra, Phoenix), the myth-ratio difference,…
(more)
▼ The thesis analyzes the role of fire and light:1st: In the Myth: It refers to the myths of fire (Prometheus, Hydra, Phoenix), the myth-ratio difference, and the association of light with life, death and love. [The body of the living is hot, that of the dead cold. Love inflames].2nd: During the first Enlightenment, according to the Orphics, Fanis or Eros, the god of light, springs from the cosmic egg. Man, a mixture of land and the Titans blood incorporates evil and requires purification by rites with light. For the Pythagoreans, fire is the first of the 10 principles, and the first of the elements of creation. They believe in a "central fire". Empedocles connects fire and light with knowledge ("skotoessa doxa"). Parmenides describes the journey from "opinion" (dark) to truth (light) with the chariot of the sun. Heraclitus introduces ratio in philosophy as fire. The thesis analyzes the principles of flux, enantiodromia, balance of opposites, dispute, harmony.3rd: In classical philosophy: In Plato's Republic the images of the sun, the divided line and the cave are analyzed, so as the problems of "being-appearing", "up-down" (movement as a feature of the soul), education, as "roaming" and "ascent" from the shadow of the cave's fire to sunlight (the good). Τhe fire that does not burn but illuminates and allows vision is distinguished in Timaeus. In the 7th Letter and the Symposium fire (intuitive knowledge) emerges suddenly.For Aristotle, fire is light in the soul. The soul uses mental images ("ghosts"). For the intellect (“ουδέποτε νοεί άνευ φαντάσματος η ψυχή”), the desire (“ορεκτικόν ουκ άνευ φαντασίας”), the choice of action (“πότερον γαρ πράξει, τόδε ή τόδε,…εκ πλειόνων φαντασμάτων ποιείν”). Analyzing the functioning of the imagination (figurative and creative) and the shape of testing the action in thought, adopted later by Freud and neuropsychology.4th: At games (Olympic or local, sports, drama, speech, music), rituals, torch races and celebrations. Laxative in cities and forests, with dances, songs, lit torches (with Maenads, Bacchae, Koryvantes, Kavirous)."Transition" celebrations (of birth, marriage, death). Celebrations of love and fertilization (of rain, sowing, vegetation)5th: In their symbolic: Fire and light were used as symbols of gods, life, truth, beauty, hope, joy, catharsis, dispute, anger, love , freedom. And the thesis substantiates its positions, with references to myth, daily life and ancient tragedy.The epilogue focuses to the light of the mind, appearing in imaging methods in the form of electromagnetic sparks in a mysteriously facsimile form, regardless of their source (logic, imagination, emotion) and the hopes that its usage (and that of the neural mirrors) opens for the acquisition of social consciousness and the feelings of altruism, solidarity and insight.
Η διατριβή αναλύει το ρόλο της φωτιάς και του φωτός: 1ον: Στο μύθο. Αναφέρεται στους μύθους της φωτιάς (Προμηθέα, Λερναίας Ύδρας, Φοίνικα), τη διαφορά μύθου-λόγου, και τη συσχέτιση του φωτός με τη ζωή, το θάνατο και τον έρωτα. [ Το…
Subjects/Keywords: Φως; Light
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Pottakis, N. (2015). Η φωτιά και το φως: στο μύθο, στη φιλοσοφία, στην τραγωδία και στη ζωή της πόλης. (Thesis). National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ). Retrieved from http://hdl.handle.net/10442/hedi/35452
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Pottakis, Nikolas. “Η φωτιά και το φως: στο μύθο, στη φιλοσοφία, στην τραγωδία και στη ζωή της πόλης.” 2015. Thesis, National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ). Accessed March 04, 2021.
http://hdl.handle.net/10442/hedi/35452.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Pottakis, Nikolas. “Η φωτιά και το φως: στο μύθο, στη φιλοσοφία, στην τραγωδία και στη ζωή της πόλης.” 2015. Web. 04 Mar 2021.
Vancouver:
Pottakis N. Η φωτιά και το φως: στο μύθο, στη φιλοσοφία, στην τραγωδία και στη ζωή της πόλης. [Internet] [Thesis]. National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); 2015. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10442/hedi/35452.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Pottakis N. Η φωτιά και το φως: στο μύθο, στη φιλοσοφία, στην τραγωδία και στη ζωή της πόλης. [Thesis]. National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); 2015. Available from: http://hdl.handle.net/10442/hedi/35452
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
9.
Kokkalis, Nikolaos.
Φως και εγκαταστάσεις: η χρήση της ελάχιστης φυσικής φωτεινής πηγής σε διαδραστικές βίντεο – εγκαταστάσεις.
Degree: 2016, Ionian University; Ιόνιο Πανεπιστήμιο
URL: http://hdl.handle.net/10442/hedi/39982
► This thesis focuses on the investigation of the function of a minimum natural light source – which is specified as the light of a candle…
(more)
▼ This thesis focuses on the investigation of the function of a minimum natural light source – which is specified as the light of a candle - and the role and potential of light sources in the field of Art, which relates to interactive video-installations. The particular research (a) refers to the metamorphoses of the minimum natural light source, as well as the meanings and symbolisms, which it has acquired through centuries. Additionally, (b) it aims to bring out those properties, which give to light a prominent role in Art and especially in the field of new media and its applications. Finally, (c) it examines the dynamics of the minimum light source - if something like this indeed exists – as well as light as an independent and sovereign entity in the work.In the course of its formation, this thesis developed a multi-part structure. Thus, each chapter is accompanied by its corresponding installation.
Η διδακτορική έρευνα αφορά στη διερεύνηση της λειτουργίας της ελάχιστης φυσικής φωτεινής πηγής –την οποία προσδιορίζει στο φως ενός κεριού- καθώς και στο ρόλο και τις δυνατότητες των φωτεινών πηγών στο πεδίο της τέχνης που σχετίζεται με τις διαδραστικές video-εγκαταστάσεις. Το κάθε κεφάλαιο της διατριβής συνοδεύεται από αντίστοιχο έργο-εγκατάσταση.Η συγκεκριμένη έρευνα (α) αναφέρεται στις μεταμορφώσεις της ελάχιστης φυσικής φωτεινής πηγής, τις έννοιες καθώς και τους συμβολισμούς τους οποίους αυτή επιδέχεται διαμέσου των αιώνων. Επιπρόσθετα, (β) καλείται να αναδείξει τις ιδιότητες εκείνες που προσδίδουν στο φως πρωτεύοντα ρόλο στην Τέχνη και ειδικά στον τομέα των νέων μέσων και των εφαρμογών της. Τέλος, (γ) εξετάζει τη δυναμική της ελάχιστης πηγής φωτός -αν υφίσταται κάτι τέτοιο– και το φως ως ανεξάρτητη και κυρίαρχη οντότητα στο έργο.
Subjects/Keywords: Φως; Light
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kokkalis, N. (2016). Φως και εγκαταστάσεις: η χρήση της ελάχιστης φυσικής φωτεινής πηγής σε διαδραστικές βίντεο – εγκαταστάσεις. (Thesis). Ionian University; Ιόνιο Πανεπιστήμιο. Retrieved from http://hdl.handle.net/10442/hedi/39982
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kokkalis, Nikolaos. “Φως και εγκαταστάσεις: η χρήση της ελάχιστης φυσικής φωτεινής πηγής σε διαδραστικές βίντεο – εγκαταστάσεις.” 2016. Thesis, Ionian University; Ιόνιο Πανεπιστήμιο. Accessed March 04, 2021.
http://hdl.handle.net/10442/hedi/39982.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kokkalis, Nikolaos. “Φως και εγκαταστάσεις: η χρήση της ελάχιστης φυσικής φωτεινής πηγής σε διαδραστικές βίντεο – εγκαταστάσεις.” 2016. Web. 04 Mar 2021.
Vancouver:
Kokkalis N. Φως και εγκαταστάσεις: η χρήση της ελάχιστης φυσικής φωτεινής πηγής σε διαδραστικές βίντεο – εγκαταστάσεις. [Internet] [Thesis]. Ionian University; Ιόνιο Πανεπιστήμιο; 2016. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10442/hedi/39982.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kokkalis N. Φως και εγκαταστάσεις: η χρήση της ελάχιστης φυσικής φωτεινής πηγής σε διαδραστικές βίντεο – εγκαταστάσεις. [Thesis]. Ionian University; Ιόνιο Πανεπιστήμιο; 2016. Available from: http://hdl.handle.net/10442/hedi/39982
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of British Columbia
10.
Johnson, Arthur C.
The scattering of light by small particles.
Degree: MA- MA, Physics, 1946, University of British Columbia
URL: http://hdl.handle.net/2429/39392
[]
Subjects/Keywords: Light
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Johnson, A. C. (1946). The scattering of light by small particles. (Masters Thesis). University of British Columbia. Retrieved from http://hdl.handle.net/2429/39392
Chicago Manual of Style (16th Edition):
Johnson, Arthur C. “The scattering of light by small particles.” 1946. Masters Thesis, University of British Columbia. Accessed March 04, 2021.
http://hdl.handle.net/2429/39392.
MLA Handbook (7th Edition):
Johnson, Arthur C. “The scattering of light by small particles.” 1946. Web. 04 Mar 2021.
Vancouver:
Johnson AC. The scattering of light by small particles. [Internet] [Masters thesis]. University of British Columbia; 1946. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/2429/39392.
Council of Science Editors:
Johnson AC. The scattering of light by small particles. [Masters Thesis]. University of British Columbia; 1946. Available from: http://hdl.handle.net/2429/39392

Michigan State University
11.
Ranney, Jane Ellen.
Perceptions of subfusional photic intermittencies under various intensites and pulse-to-cycle fractions.
Degree: PhD, 1964, Michigan State University
URL: http://etd.lib.msu.edu/islandora/object/etd:37376
Subjects/Keywords: Light
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ranney, J. E. (1964). Perceptions of subfusional photic intermittencies under various intensites and pulse-to-cycle fractions. (Doctoral Dissertation). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:37376
Chicago Manual of Style (16th Edition):
Ranney, Jane Ellen. “Perceptions of subfusional photic intermittencies under various intensites and pulse-to-cycle fractions.” 1964. Doctoral Dissertation, Michigan State University. Accessed March 04, 2021.
http://etd.lib.msu.edu/islandora/object/etd:37376.
MLA Handbook (7th Edition):
Ranney, Jane Ellen. “Perceptions of subfusional photic intermittencies under various intensites and pulse-to-cycle fractions.” 1964. Web. 04 Mar 2021.
Vancouver:
Ranney JE. Perceptions of subfusional photic intermittencies under various intensites and pulse-to-cycle fractions. [Internet] [Doctoral dissertation]. Michigan State University; 1964. [cited 2021 Mar 04].
Available from: http://etd.lib.msu.edu/islandora/object/etd:37376.
Council of Science Editors:
Ranney JE. Perceptions of subfusional photic intermittencies under various intensites and pulse-to-cycle fractions. [Doctoral Dissertation]. Michigan State University; 1964. Available from: http://etd.lib.msu.edu/islandora/object/etd:37376

University of South Africa
12.
Curtis, Angela Lesley.
The effects of artificial lighting on activity of Namib Desert bats (Mammalia: Chiroptera)
.
Degree: 2019, University of South Africa
URL: http://hdl.handle.net/10500/26151
► The large-scale use of artificial light throughout the night has occurred in the last 100 years and continues to increase globally. Artificial light impacts many…
(more)
▼ The large-scale use of artificial
light throughout the night has occurred in the last 100 years and continues to increase globally. Artificial
light impacts many animal and plant taxa. The effects of artificial
light on bats is species specific. The Namib Desert in Namibia is still relatively dark but
subject to the same drivers of increasing development and urbanization that have increased the spread of artificial
light globally. This study investigated the effects of the introduction of ultraviolet, yellow and white artificial
light on the activity of bats in a rural environment with minimal development in the Namib Desert. Four sites, 100 m apart, had one
light and one bat detector each. The fourth
light was a dark control. Each site was sampled four times by each
light type. Bat activity was recorded by the bat detectors. Eight bat species were recorded during the experiment. Activity increased for open air and clutter-edge foraging species analysed. Broadband white
light caused the highest increases in activity followed by yellow
light when compared with the dark control site. Ultraviolet
light caused the lowest increases in activity contrary to expectations.; Mengwaga ye 100 ya go feta go bile le koketšego ye kgolo ya tšhomišo ya seetša sa maitirelo bošego ka moka. Setlwaedi se se ata kudu lefaseng ka moka go feta pele, gomme se ama diphoofolo tše ntši le mehuta ya dimela. Leganata la Namib go la Namibia gabotse le sa ntše le swiswetše, eupša le ka fase ga dikgontšhi tša go oketša tlhabollo le toropofatšo tšeo di hlotšego koketšego tšhomišong ya seetša sa maitirelo lefaseng ka bophara. Dikhuetšo tša seetša sa maitirelo go memankgagane di fapana go ya ka mohuta. Nyakišišo ye e nyakišišitše dikhuetšo tša tsebagatšo ya seetša sa maitirelo sa go phadima, serolwane le se sešweu go modiro wa memankgagane ka tikologong ya nagaselegae ya go ba le tlhabollo ye nyane ka Leganateng la Namib. Seetša se setee le tithekethara e tee ya mankgagane di hlomilwe go le lengwe le le lengwe la mafelo a mane, a go arogantšhwa ka 100 m. Seetša sa bone se be se le taolo ya leswiswi. Lefelo le lengwe le le lengwe le dirilwe mohlala makga a mane ka mohuta wo mongwe le wo mongwe wa seetša. Modiro wa mankgagane e rekotilwe ka ditithekethara tša mankgagane. Mehuta ya mankgagane ye seswai e rekotilwe nakong ya eksperimente. Modiro wa mehuta ya sebakabakeng le ya go sela thobekgeng ye e sekasekilwego e oketšegile. Seetša se sešweu sa porotepente se hlotše dikoketšego tša modiro, sa latelwa ke seetša se se serolwane, ge se bapetšwa le lefelo la taolo ya leswiswi. Go fapana le ditetelo, seetša sa go phadima se hlotše dikoketšego tša fasefase modirong.
Advisors/Committee Members: Keith, M (advisor), Seamark, E (advisor), Strauss, W. M (advisor).
Subjects/Keywords: Artificial light;
Light wavelengths;
Bats;
Namib Desert;
Bat activity;
Ultraviolet light;
Yellow light;
White light;
Compact fluorescent light bulbs;
Undeveloped habitat
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Curtis, A. L. (2019). The effects of artificial lighting on activity of Namib Desert bats (Mammalia: Chiroptera)
. (Masters Thesis). University of South Africa. Retrieved from http://hdl.handle.net/10500/26151
Chicago Manual of Style (16th Edition):
Curtis, Angela Lesley. “The effects of artificial lighting on activity of Namib Desert bats (Mammalia: Chiroptera)
.” 2019. Masters Thesis, University of South Africa. Accessed March 04, 2021.
http://hdl.handle.net/10500/26151.
MLA Handbook (7th Edition):
Curtis, Angela Lesley. “The effects of artificial lighting on activity of Namib Desert bats (Mammalia: Chiroptera)
.” 2019. Web. 04 Mar 2021.
Vancouver:
Curtis AL. The effects of artificial lighting on activity of Namib Desert bats (Mammalia: Chiroptera)
. [Internet] [Masters thesis]. University of South Africa; 2019. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10500/26151.
Council of Science Editors:
Curtis AL. The effects of artificial lighting on activity of Namib Desert bats (Mammalia: Chiroptera)
. [Masters Thesis]. University of South Africa; 2019. Available from: http://hdl.handle.net/10500/26151

NSYSU
13.
Lien, Kuan-Yi.
The Study of Highly Efficient Single Emitting Layer White Light Organic Light-Emitting Diodes on Tandem Structure.
Degree: Master, Electro-Optical Engineering, 2009, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727109-162851
► We report that the tandem OLEDs made of two electroluminescent (EL) units connected by the interconnecting layer. If It is compared wih the traditional OLEDs.…
(more)
▼ We report that the tandem OLEDs made of two electroluminescent (EL) units connected by the interconnecting layer. If It is compared wih the traditional OLEDs. The tandem OLEDs have higher efficiency and well lifetime. We not only used the single emitting layer WOLEDs as EL unit but also studied the effect of the interconnecting layer for whole device.
First, we designed the interconnecting layer with Alq3ï¼Li (1%) (n-doping layer)/MoO3 (p-doping layer), and we optimized the thickness of the interconnecting layer by using green unit cell (Alq3 for EML),
ITO/NPB(65 nm)/Alq3(30 nm)/Alq3(30 nm)/Alq3(x nm)ï¼Li (1%)/MoO3(y nm)/NPB(65 nm)/Alq3(30 nm)/Alq3(30 nm)/LiF(0.8 nm)/Al(200 nm)
x=10ï¼20ï¼30ï¼40ï¼y=1ï¼3ï¼5ï¼7ï¼10
We found that the best thickness of Alq3ï¼Li (1%) and MoO3 are 20 nm and 5 nm. In our study, we concluded that there are the best thickness to each interconnecting layer, and it keeps the charge balance between two units.
Finally, we used our single emitting layer WOLEDs as unit cell, which used 1,3,5-Tri(1-pyrenyl)benzene (TPB3) as the host, and 4-(dicyanomethylene)-2-tert-butyl-6(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) as the guest, unit cell was
ITO(130 nm)/NPB(65 nm)/ TPB3(30 nm)ï¼DCJTB(0.05%)/ Alq3(30 nm)/LiF(8 nm)/Al(200 nm)
Whole device was
ITO(130 nm)/NPB(65 nm)/ TPB3(30 nm)ï¼DCJTB(0.05%)/ Alq3(30 nm)/Alq3(20 nm)ï¼Li(1%)/MoO3(5 nm)/NPB(65 nm)/TPB3(30 nm)ï¼DCJTB(0.05%)/Alq3(30 nm)/
LiF(0.8 nm)/Al(200 nm)
We got almost three times luminance from the tandem one at the same current density (670 cd/m2 for 2360 cd/m2 at 20 mA/cm2) and efficiency as high as 9.7 cd/A ( at 24 mA/cm2). Itâs a excellent contribution for device lifetime. But the operation voltage and the power efficiency didnât reach to our expectancy.
In order to improve the disadvantage, we changed the concentration of n-doping layer Alq3ï¼Li (z %)ï¼z=1%ï¼2%ï¼3%. It was actually improved the turn-on voltage from 10 V to 7 V. But the luminescent characteristics also degenerated. Although we enhanced the charge mobility of the n-doping layer, it also caused the degeneration of luminescent characteristics because of the unbalance of the charge transference.We got the efficiency 8.1 cd/A ( at 14 V) and almost two times luminance from the tandem one at the same current density (670 cd/m2 for 1760 cd/m2 at 20 mA/cm2), most close to the white area of CIE coordinates was (0.30 , 0.37) at 15 V. Its range of CIE coordinates was (0.35 , 0.46)~(0.28 , 0.33) at 8 V~20 V. We have already developed the tandem WOLEDs using single white emitting layer as EL units that have never be reported. It not only maintained the advantages of the tandem structure, but also had excellent stability of luminescent characteristics at wide range operation voltage. We reached our goal to improve the WOLEDs and make it more suitable for commercial applications, especially for the development of
light sources.
Advisors/Committee Members: Mei-Ying Chang (committee member), Chih-Chien Lee (chair), Jui-Ming Yeh (chair), Yu-Kai Han (chair), Ping-Tsung Huang (chair).
Subjects/Keywords: white light; tandem; Organic Light-Emitting Diodes
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Lien, K. (2009). The Study of Highly Efficient Single Emitting Layer White Light Organic Light-Emitting Diodes on Tandem Structure. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727109-162851
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Lien, Kuan-Yi. “The Study of Highly Efficient Single Emitting Layer White Light Organic Light-Emitting Diodes on Tandem Structure.” 2009. Thesis, NSYSU. Accessed March 04, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727109-162851.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lien, Kuan-Yi. “The Study of Highly Efficient Single Emitting Layer White Light Organic Light-Emitting Diodes on Tandem Structure.” 2009. Web. 04 Mar 2021.
Vancouver:
Lien K. The Study of Highly Efficient Single Emitting Layer White Light Organic Light-Emitting Diodes on Tandem Structure. [Internet] [Thesis]. NSYSU; 2009. [cited 2021 Mar 04].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727109-162851.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lien K. The Study of Highly Efficient Single Emitting Layer White Light Organic Light-Emitting Diodes on Tandem Structure. [Thesis]. NSYSU; 2009. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727109-162851
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology
14.
van der Werff, Danielle (author).
Passive Localization of Robots with Ambient Light.
Degree: 2018, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:82cfe98f-46ad-42b4-8021-082fbae1f740
► A lot of research is been being done on Visible Light Communication (VLC), which has shown to be of interest for many applications, such as…
(more)
▼ A lot of research is been being done on Visible
Light Communication (VLC), which has shown to be of interest for many applications, such as localization. Since localization based on VLC requires active modulation of
light sources, this limits the amount of
light sources that can be used for localization. Furthermore, in some situations there might not even be a controllable
light source present (for example outdoors). To extend the use of
light-based localization schemes, this thesis looks into a way to achieve the same result as current VLC localization methods in a passive manner, i.e. without control of the
light sources. Previous work has been done on passive ambient
light-based localization by Wang et al.: objects are equipped with unique barcodes, that reflect ambient
light in a distinct manner. The reflected
light is received by photosensors, from which their ID is obtained. However, this work has focused on identifying large-sized objects in one dimension. Using the same principle for localization of small-sized objects, and in two dimensions, are open challenges that this thesis addresses . The work presented here forms a proof-of-concept of a passive
light-based localization system for two-dimensional, real-time tracking of small-sized objects. In order to achieve this, a special enclosure has been designed, giving simple photosensors the ability to distinguish small-sized objects without compromising their FOV. With this enclosure, a single photosensor can detect barcodes down to 7 cm in size in the test set-up, while distinguishing up to three different IDs. A particle filter has been implemented to combine detections from different photosensors into a single estimate of an object’s location. The localization system is designed around the robots designed by a MSc student at the Embedded Systems group at TU Delft. By moving these robots at a speed of 15.4 cm/s in a straight line through the test set-up, a localization error of 4.8 cm is obtained. The distance between the robots and the sensor equals 20 cm.
Advisors/Committee Members: Zuñiga Zamalloa, Marco (mentor), Pawelczak, Przemek (mentor), de Croon, Guido (graduation committee), Langendoen, Koen (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: Localization; Ambient light; Passive light communication
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APA (6th Edition):
van der Werff, D. (. (2018). Passive Localization of Robots with Ambient Light. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:82cfe98f-46ad-42b4-8021-082fbae1f740
Chicago Manual of Style (16th Edition):
van der Werff, Danielle (author). “Passive Localization of Robots with Ambient Light.” 2018. Masters Thesis, Delft University of Technology. Accessed March 04, 2021.
http://resolver.tudelft.nl/uuid:82cfe98f-46ad-42b4-8021-082fbae1f740.
MLA Handbook (7th Edition):
van der Werff, Danielle (author). “Passive Localization of Robots with Ambient Light.” 2018. Web. 04 Mar 2021.
Vancouver:
van der Werff D(. Passive Localization of Robots with Ambient Light. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Mar 04].
Available from: http://resolver.tudelft.nl/uuid:82cfe98f-46ad-42b4-8021-082fbae1f740.
Council of Science Editors:
van der Werff D(. Passive Localization of Robots with Ambient Light. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:82cfe98f-46ad-42b4-8021-082fbae1f740

Louisiana State University
15.
Barnett, Jonathan Zell.
Effects of Light Quality and Light Quantity on the Growth Kinetics of a Louisiana Native Microalgal/Cyanobacterial Co-culture.
Degree: MSCE, Civil and Environmental Engineering, 2015, Louisiana State University
URL: etd-11092015-123040
;
https://digitalcommons.lsu.edu/gradschool_theses/3285
► One of the most important factors controlling the growth of microalgae is light. Light quality and light quantity have a dramatic effect on the production…
(more)
▼ One of the most important factors controlling the growth of microalgae is light. Light quality and light quantity have a dramatic effect on the production of biomass, lipids and pigments of microalgae. In this research, a native Louisiana co-culture containing Chlorella vulgaris (microalgae) and Leptolyngbya sp (cyanobacteria) was studied to determine the effects of various wavelength distributions and irradiance levels on growth kinetics. Growth rates, biomass levels, lipid contents and chlorophyll-a production was examined in batch cultures to determine which color light was optimum for cultivation. At 80 µmol/m2-sec the species shifted from microalgae dominant to cyanobacteria dominant. The impact of four different light colors (blue, green, red and white) on the growth at 400 µmol/m2-sec revealed that red light produced the highest growth rate (0.41 1/d) and final biomass concentration (913 mg/L). Red light was chosen as the optimum wavelength at 400 µmol/m2-sec. When red light was compared to white light at higher light intensities red light produced the highest growth rate (0.47 1/d). Red light had the highest photosynthetic efficiency (1.29 %), while white light had the highest chlorophyll-a production (1874 µg/L) and the highest biomass (1207 mg/L). Overall, red light was determined to be the optimum wavelength to grow this co-culture because of the higher growth rates and photosynthetic efficiency. This co-culture was also grown in a continuous flow hydraulically integrated serial turbidostat algal reactor (HISTAR) system. This study showed that different dilution rates can affect the final harvested biomass weight. Also, at high biomass concentrations, light penetration is reduced enough for cyanobacteria filaments to form, which will hinder the growth of the microalgae.
Subjects/Keywords: light quantity; cyanobacteria; microalgae; light quality
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Barnett, J. Z. (2015). Effects of Light Quality and Light Quantity on the Growth Kinetics of a Louisiana Native Microalgal/Cyanobacterial Co-culture. (Masters Thesis). Louisiana State University. Retrieved from etd-11092015-123040 ; https://digitalcommons.lsu.edu/gradschool_theses/3285
Chicago Manual of Style (16th Edition):
Barnett, Jonathan Zell. “Effects of Light Quality and Light Quantity on the Growth Kinetics of a Louisiana Native Microalgal/Cyanobacterial Co-culture.” 2015. Masters Thesis, Louisiana State University. Accessed March 04, 2021.
etd-11092015-123040 ; https://digitalcommons.lsu.edu/gradschool_theses/3285.
MLA Handbook (7th Edition):
Barnett, Jonathan Zell. “Effects of Light Quality and Light Quantity on the Growth Kinetics of a Louisiana Native Microalgal/Cyanobacterial Co-culture.” 2015. Web. 04 Mar 2021.
Vancouver:
Barnett JZ. Effects of Light Quality and Light Quantity on the Growth Kinetics of a Louisiana Native Microalgal/Cyanobacterial Co-culture. [Internet] [Masters thesis]. Louisiana State University; 2015. [cited 2021 Mar 04].
Available from: etd-11092015-123040 ; https://digitalcommons.lsu.edu/gradschool_theses/3285.
Council of Science Editors:
Barnett JZ. Effects of Light Quality and Light Quantity on the Growth Kinetics of a Louisiana Native Microalgal/Cyanobacterial Co-culture. [Masters Thesis]. Louisiana State University; 2015. Available from: etd-11092015-123040 ; https://digitalcommons.lsu.edu/gradschool_theses/3285

Delft University of Technology
16.
Suwignyo, Haris (author).
Increasing the Performance of Passive Communication with Ambient Light.
Degree: 2019, Delft University of Technology
URL: http://resolver.tudelft.nl/uuid:b6637f53-4d37-4e79-a184-240bc2c4f32d
► Most wireless communication technologies have been using the Radio Frequency (RF) spectrum for decades. Due to the popularity of the Internet of Things (IoT), the…
(more)
▼ Most wireless communication technologies have been using the Radio Frequency (RF) spectrum for decades. Due to the popularity of the Internet of Things (IoT), the RF spectrum has started to become densely populated. Researchers have begun to explore other bands of the electromagnetic spectrum that can be utilized as a communication media. One of the promising choices is the visible light spectrum. Visible Light Communication (VLC) refers to the wireless communication technology that utilizes the visible light spectrum. This spectrum is thousands of times wider than the Radio Frequency (RF) spectrum and is license-free. In VLC, data is transmitted by turning a light source on and off. However, not every light source can be controlled. Passive light sources such as the sun provide an immense amount of light that can be used for wireless communication if we can develop ways to modulate them. One of the researches that use ambient light to create a wireless link is LuxLink. LuxLink uses liquid crystal shutters to control passive light sources and provides low energy, reliable, and flicker-free (safe) communication. This thesis addresses several problems that the current LuxLink system has. We present LuxLink+, an extension of LuxLink that provides two main improvements. Firstly, the data rate of the system is relatively low (80~bps). To increase the data rate, we provide a thorough analysis of the system’s bandwidth. Afterward, we modify the modulation technique, which increases the data rate to 1000~bps at a range of 1.5~m. Secondly, the system has a static data rate, which means that the system cannot adapt its data rate to changes in the environment. We implement a rate adaptation algorithm that can change its data rate accordingly. LuxLink+ improves the average throughput of the system by up to 85 percent compared to LuxLink.
Electrical Engineer | Embedded Systems
Advisors/Committee Members: Zuñiga Zamalloa, Marco (mentor), Langendoen, Koen (graduation committee), Al-Ars, Zaid (graduation committee), Delft University of Technology (degree granting institution).
Subjects/Keywords: visible light communication; passive communication; ambient light
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Suwignyo, H. (. (2019). Increasing the Performance of Passive Communication with Ambient Light. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:b6637f53-4d37-4e79-a184-240bc2c4f32d
Chicago Manual of Style (16th Edition):
Suwignyo, Haris (author). “Increasing the Performance of Passive Communication with Ambient Light.” 2019. Masters Thesis, Delft University of Technology. Accessed March 04, 2021.
http://resolver.tudelft.nl/uuid:b6637f53-4d37-4e79-a184-240bc2c4f32d.
MLA Handbook (7th Edition):
Suwignyo, Haris (author). “Increasing the Performance of Passive Communication with Ambient Light.” 2019. Web. 04 Mar 2021.
Vancouver:
Suwignyo H(. Increasing the Performance of Passive Communication with Ambient Light. [Internet] [Masters thesis]. Delft University of Technology; 2019. [cited 2021 Mar 04].
Available from: http://resolver.tudelft.nl/uuid:b6637f53-4d37-4e79-a184-240bc2c4f32d.
Council of Science Editors:
Suwignyo H(. Increasing the Performance of Passive Communication with Ambient Light. [Masters Thesis]. Delft University of Technology; 2019. Available from: http://resolver.tudelft.nl/uuid:b6637f53-4d37-4e79-a184-240bc2c4f32d

NSYSU
17.
Wang, Chien-Hsiung.
The Study of High Brightness and Color Purity White light Organic Light-Emitting Diodes.
Degree: Master, Electro-Optical Engineering, 2008, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721108-155353
► We have fabricated a high brightness and color purity white light organic light emitting diode based on a multi-emission-layer. There were several methods to achieve…
(more)
▼ We have fabricated a high brightness and color purity white
light organic
light emitting diode based on a multi-emission-layer. There were several methods to achieve white
light OLEDs, including multi-emission- layer device, single emission layer device, and so on. We use RGB triple -emission-layer device to obtain white
light, because its EL spectrum is broader than that of the dual-emission-layer device. Frequent problems that showed be faced in a multi-layer structure are the complicate device structure and the color various with different operation voltage.
Our work includes five parts. First, we optimized the red
light device by controlling the concentration of DCJTB with the configuration of ITO/NPB/Alq3: DCJTB/Alq3/LiF/Al. Second, we optimized the blue
light device by controlling the concentration of TC-1753 based on a device structure of ITO/ NPB/ TC-1558: TC-1753/ Alq3/ LiF/ Al. Third, we fabricated green
light device by using TPB3 as an emission layer with the configuration of ITO/NPB/TPB3/Alq3/LiF/Al. Then we optimized the dual-emission-layer white
light OLED by adjusting the thickness of blue and red emission layers. Finally, we added a green emission layer into the dual emission layer device with the device structure of ITO(1300Å)/NPB(500Å)/ TPB3(500-2xÅ)/ TC-1558(xÅ): TC-1753(2%)/ Alq3(xÅ): DCJTB(2%)/ Alq3(350Å)/ LiF(8Å)/Al(2000Å).
By controlling the thickness of each emission layer, a stable white OLED was achieved. The thickness of emission layer were TPB3(200Å)/ TC-1558(150Å):TC-1753(2%)/ Alq3(150Å):DCJTB(2%). The maximum luminance reached 48200 cd/m2 at 13.5V, the maximum current efficiency and power efficiency were 4.06 cd/A at 13V and 1.9 lm/W at 20mA/cm2, respectively. The CIE coordinate varied from (0.339, 0.317) to (0.339, 0.327) with an applied voltage from 9V to 13.5V. We have overcome the problem of instable color purity which was the critical disadvantage of multi-emission-layer white
light OLEDs. Our study performed a high brightness and color purity white
light device.
Advisors/Committee Members: Mei-Ying Chang (committee member), Chih-Chien Lee (chair), Jui-Ming Yeh (chair), Wen-Yao Huang (chair), Yu-Kai Han (chair), Ping-Tsung Huang (chair).
Subjects/Keywords: OLED; white light
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wang, C. (2008). The Study of High Brightness and Color Purity White light Organic Light-Emitting Diodes. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721108-155353
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wang, Chien-Hsiung. “The Study of High Brightness and Color Purity White light Organic Light-Emitting Diodes.” 2008. Thesis, NSYSU. Accessed March 04, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721108-155353.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wang, Chien-Hsiung. “The Study of High Brightness and Color Purity White light Organic Light-Emitting Diodes.” 2008. Web. 04 Mar 2021.
Vancouver:
Wang C. The Study of High Brightness and Color Purity White light Organic Light-Emitting Diodes. [Internet] [Thesis]. NSYSU; 2008. [cited 2021 Mar 04].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721108-155353.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wang C. The Study of High Brightness and Color Purity White light Organic Light-Emitting Diodes. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721108-155353
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU
18.
Huang, Yu-Syuan.
Nonlinear Volterra Filter in Visible Light Communication.
Degree: Master, Electro-Optical Engineering, 2014, NSYSU
URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0830114-141053
► This thesis discusses the channel effects of a visible light communication system on signal performance, when carrier-less amplitude phase (CAP) or orthogonal frequency-division multiplexing (OFDM)…
(more)
▼ This thesis discusses the channel effects of a visible
light communication system on signal performance, when carrier-less amplitude phase (CAP) or orthogonal frequency-division multiplexing (OFDM) modulation scheme is employed. To mitigate the channel effects and interference, which is mainly caused by an LED, this thesis applies linear and Volterra equalizer to equalize the signals, and studies the effects of the filter parameters on the visible
light communication system.
Advisors/Committee Members: Yung-Jr Hung (chair), Chen-Mu Tsai (chair), Chin-Ping Yu (chair), Chia-chien Wei (committee member).
Subjects/Keywords: Visible Light Communication
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Huang, Y. (2014). Nonlinear Volterra Filter in Visible Light Communication. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0830114-141053
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Huang, Yu-Syuan. “Nonlinear Volterra Filter in Visible Light Communication.” 2014. Thesis, NSYSU. Accessed March 04, 2021.
http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0830114-141053.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Huang, Yu-Syuan. “Nonlinear Volterra Filter in Visible Light Communication.” 2014. Web. 04 Mar 2021.
Vancouver:
Huang Y. Nonlinear Volterra Filter in Visible Light Communication. [Internet] [Thesis]. NSYSU; 2014. [cited 2021 Mar 04].
Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0830114-141053.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Huang Y. Nonlinear Volterra Filter in Visible Light Communication. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0830114-141053
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Penn State University
19.
Wilkerson, Andrea Marie.
Reallocation of Narrow Bands of Spectral Energy:
the Effect on Brightness Perception and Color Preference
.
Degree: 2013, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/19183
► The research furthers the understanding of human psychophysical response to spectra and the role of spectral tuning in source optimization by examining the effect of…
(more)
▼ The research furthers the understanding of human psychophysical response to spectra and the role of spectral tuning in source optimization by examining the effect of spectral modification on the perception of brightness and color preference, building upon the work of William Thornton, Kevin Houser, and their associates. Thornton first theorized over forty years ago that the perception of brightness could be increased by placing energy in the spectral regions at and near 450, 530 and 610 nm, which he called the prime color spectral regions. He further identified the areas at and near 495 and 575 nm as having deleterious effects on color preference and termed these anti-prime color regions. Hurvich’s opponent signal sensitivity curves have a relative sensitivity of zero where the sensitivity switches between blue and yellow at 500 nm and switches between red and green at 480 and 580 nm. This dissertation focused on removal of optical radiation near anti-prime spectral regions, where the opponent signal relative sensitivity is zero, and resulting perceptions of brightness and color preference.
This dissertation examined brightness and preference differences between a reference spectrum and three test spectra that had less optical radiation in the spectral regions near 500, 580, or 500 and 580 nm. Two experimental methodologies were employed, forced choice discrimination at fixed illuminance levels, and brightness matching. Energy was removed from the regions of 500 and 580 nm, with some energy added to other regions of the visible spectrum as necessary to maintain consistent chromaticity. Brightness discrimination and brightness matching experimental methodologies were both employed in order to examine if these methodologies would produce comparable results.
The research aimed to answer the following questions:
1. Do spectra with energy reallocated from the regions of either 500, 580, or 500 and 580 nm appear brighter than a nearly continuous reference spectrum?
2. Do the experimental methodologies side-by-side brightness matching and side-by-side brightness discrimination (forced choice) produce comparable results?
3. Does the reallocation of energy from the regions of 500, 580, or 500 and 580 nm change preference for a person’s own skin tone?
The test spectrum with energy reallocated near the spectral region of 500 nm (SPD500) and the test spectrum with energy reallocated near the spectral region of 500 and 580 nm (SPD500,580) appeared brighter than the reference spectrum (SPDRef) at equal illuminance, reaching statistical significance for both the brightness matching and brightness discrimination experiments. No statistical difference in brightness was found between the test spectrum with energy reallocated near the spectral region of 580 nm (SPD580) and SPDRef.
The side-by-side brightness matching experimental methodology and the side-by-side brightness discrimination experimental methodology produced comparable results. The rank order of the reference and test spectra was similar for both experimental…
Advisors/Committee Members: Kevin William Houser, Dissertation Advisor/Co-Advisor, Richard George Mistrick, Committee Member, Jelena Srebric, Committee Member, Eric Loken, Committee Member, Robert Davis, Special Member.
Subjects/Keywords: Light; Engineering; Perception
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Wilkerson, A. M. (2013). Reallocation of Narrow Bands of Spectral Energy:
the Effect on Brightness Perception and Color Preference
. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/19183
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Wilkerson, Andrea Marie. “Reallocation of Narrow Bands of Spectral Energy:
the Effect on Brightness Perception and Color Preference
.” 2013. Thesis, Penn State University. Accessed March 04, 2021.
https://submit-etda.libraries.psu.edu/catalog/19183.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Wilkerson, Andrea Marie. “Reallocation of Narrow Bands of Spectral Energy:
the Effect on Brightness Perception and Color Preference
.” 2013. Web. 04 Mar 2021.
Vancouver:
Wilkerson AM. Reallocation of Narrow Bands of Spectral Energy:
the Effect on Brightness Perception and Color Preference
. [Internet] [Thesis]. Penn State University; 2013. [cited 2021 Mar 04].
Available from: https://submit-etda.libraries.psu.edu/catalog/19183.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Wilkerson AM. Reallocation of Narrow Bands of Spectral Energy:
the Effect on Brightness Perception and Color Preference
. [Thesis]. Penn State University; 2013. Available from: https://submit-etda.libraries.psu.edu/catalog/19183
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

McMaster University
20.
Radica, Michael.
A Search for Supernova Light Echoes in NGC 6946 with SITELLE.
Degree: MSc, 2019, McMaster University
URL: http://hdl.handle.net/11375/24780
► Scattered light echoes provide a unique way to engage in late-time study of supernovae. Formed when light from a supernova scatters off of nearby dust,…
(more)
▼ Scattered light echoes provide a unique way to engage in late-time study of supernovae. Formed when light from a supernova scatters off of nearby dust, and arrives at Earth long after the supernova has initially faded from the sky, light echoes can be used to study the precursor supernova through both photometric and spectroscopic methods. The detection rate of light echoes, especially from Type II supernovae, is not well understood, and large scale searches are confounded by uncertainties in supernova ages and peak luminosities.
We provide a novel spectroscopic search method for detecting light echoes, and test it with 4 hours of observations of NGC 6946 using the SITELLE Imaging Fourier Transform Spectrometer mounted on the Canada-France-Hawaii Telescope. Our procedure relies on fitting a sloped model to continuum emission, and identifying negatively-sloped continua with the downslope of the emission component of a highly-broadened P-Cygni profile in the Hα line, characteristic of supernova ejecta.
We find no clear evidence for light echoes from any of the ten known Type II supernovae in NGC 6946, and only one light echo candidate from potential historical supernovae predating 1917. We do however, present an upper limit in Hα brightness of \SI{5e-17}{erg/s/cm2/arcsec2} for light echoes within this galaxy. We discuss extensions of our methodology, as well as viability of this type of study in other objects, and with other instruments.
Thesis
Master of Science (MSc)
Advisors/Committee Members: Welch, Douglas, Physics and Astronomy.
Subjects/Keywords: Supernova Light Echoes
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Radica, M. (2019). A Search for Supernova Light Echoes in NGC 6946 with SITELLE. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/24780
Chicago Manual of Style (16th Edition):
Radica, Michael. “A Search for Supernova Light Echoes in NGC 6946 with SITELLE.” 2019. Masters Thesis, McMaster University. Accessed March 04, 2021.
http://hdl.handle.net/11375/24780.
MLA Handbook (7th Edition):
Radica, Michael. “A Search for Supernova Light Echoes in NGC 6946 with SITELLE.” 2019. Web. 04 Mar 2021.
Vancouver:
Radica M. A Search for Supernova Light Echoes in NGC 6946 with SITELLE. [Internet] [Masters thesis]. McMaster University; 2019. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/11375/24780.
Council of Science Editors:
Radica M. A Search for Supernova Light Echoes in NGC 6946 with SITELLE. [Masters Thesis]. McMaster University; 2019. Available from: http://hdl.handle.net/11375/24780
21.
Lee, Julia Seungmi.
Cellular Viability Imaging Using Dynamic Light Scattering
Optical Coherence Tomography.
Degree: School of Engineering, 2018, Brown University
URL: https://repository.library.brown.edu/studio/item/bdr:792773/
► Cellular viability represents whether a cell is performing normal functions, relating to intracellular energy synthesis. Accurately quantifying the cellular viability would facilitate novel studies on…
(more)
▼ Cellular viability represents whether a cell is
performing normal functions, relating to intracellular energy
synthesis. Accurately quantifying the cellular viability would
facilitate novel studies on how pathological environments affect
the functioning of cells in various diseases. Nevertheless,
technologies for monitoring the cellular viability in live tissue
models are currently lacking. This study aims at testing a recently
developed technology, which integrates dynamic
light scattering and
optical coherence tomography (called DLS-OCT), to image the
cellular viability with single-cell resolution. DLS analyzes
fluctuations in
light scattered by particles to measure diffusion
or flow of the particles, and OCT uses coherence gating to collect
light only scattered from a small volume for high-resolution
structural imaging. Integrating the two technologies, DLS-OCT
constructs high-resolution diffusion coefficient and flow velocity
3D maps. It is known that the motion of intracellular organelles,
often called intracellular motility, resembles a random walk in the
confined cytoplasm space, thus it can be quantified by the
diffusion coefficient. Since the intracellular motility is
correlated with the cell’s metabolism level, the diffusion
coefficient map of DLS-OCT is expected to enable us to image the
cellular viability. Here, the DLS-OCT imaging of cellular viability
was validated by characterizing responses of the measured
intracellular motility to the environmental conditions such as the
temperature and pH, in animal retinal explant samples. First, we
characterized our new OCT system and optimized scanning sequences
and processing procedures for DLS-OCT data, to match the dynamic
range of our DLS-OCT measurement with the typical range of
intracellular motility. Both numerical simulation and phantom
experiments were performed for optimization. Second, methods
required for animal retinal explant experiments were established,
and DLS-OCT data from retinal tissue while manipulating the
cellular viability were acquired and analyzed, to test the
technical hypothesis that DLS-OCT-measured intracellular motility
of neurons significantly diminishes when the cellular viability
levels are out of the physiological ranges. Similar operations were
performed to tissue spheroids with additional morphological
measurements. As a result, we measured individual cells’
healthiness for tempered conditions, which will enlighten studying
cells’ healthiness during disease progress or therapeutic treatment
in stroke, epilepsy, and Alzheimer’s disease among
others.
Advisors/Committee Members: Lee, Jonghwan (Advisor), Powers, Thomas (Reader), Hoffman-Kim, Diane (Reader).
Subjects/Keywords: Dynamic Light Scattering
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APA ·
Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
Lee, J. S. (2018). Cellular Viability Imaging Using Dynamic Light Scattering
Optical Coherence Tomography. (Thesis). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:792773/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Lee, Julia Seungmi. “Cellular Viability Imaging Using Dynamic Light Scattering
Optical Coherence Tomography.” 2018. Thesis, Brown University. Accessed March 04, 2021.
https://repository.library.brown.edu/studio/item/bdr:792773/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Lee, Julia Seungmi. “Cellular Viability Imaging Using Dynamic Light Scattering
Optical Coherence Tomography.” 2018. Web. 04 Mar 2021.
Vancouver:
Lee JS. Cellular Viability Imaging Using Dynamic Light Scattering
Optical Coherence Tomography. [Internet] [Thesis]. Brown University; 2018. [cited 2021 Mar 04].
Available from: https://repository.library.brown.edu/studio/item/bdr:792773/.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Lee JS. Cellular Viability Imaging Using Dynamic Light Scattering
Optical Coherence Tomography. [Thesis]. Brown University; 2018. Available from: https://repository.library.brown.edu/studio/item/bdr:792773/
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Addis Ababa University
22.
Misrak, Getahun.
Three-Level Laser Dynamics with Coherent and Squeezed Light
.
Degree: 2012, Addis Ababa University
URL: http://etd.aau.edu.et/dspace/handle/123456789/1257
► We study the squeezing and statistical properties of the light produced by a three-level laser whose cavity contains a parametric amplifier and with the cavity…
(more)
▼ We study the squeezing and statistical properties of the
light produced by a three-level
laser whose cavity contains a parametric amplifier and with the cavity mode driven by
coherent
light and coupled to a squeezed vacuum reservoir. We obtain stochastic differential
equations associated with the normal ordering using the pertinent master equation.
Making use of the solutions of the resulting differential equations, we calculate the quadrature
variances and squeezing spectrum. We also determine the mean and variance of the
photon number and the photon number distribution for the cavity mode employing the Q
function. It is found that the parametric amplifier and squeezed vacuum reservoir increase
the degree of squeezing, but the driving coherent
light does not have any effect on the
squeezing. Moreover, the mean photon number increases considerably due the driving
coherent
light, the parametric amplifier, and the squeezed vacuum reser
Advisors/Committee Members: Dr. Fesseha Kassahun (advisor).
Subjects/Keywords: Dynamics;
Squeezed Light
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Misrak, G. (2012). Three-Level Laser Dynamics with Coherent and Squeezed Light
. (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/1257
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Misrak, Getahun. “Three-Level Laser Dynamics with Coherent and Squeezed Light
.” 2012. Thesis, Addis Ababa University. Accessed March 04, 2021.
http://etd.aau.edu.et/dspace/handle/123456789/1257.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Misrak, Getahun. “Three-Level Laser Dynamics with Coherent and Squeezed Light
.” 2012. Web. 04 Mar 2021.
Vancouver:
Misrak G. Three-Level Laser Dynamics with Coherent and Squeezed Light
. [Internet] [Thesis]. Addis Ababa University; 2012. [cited 2021 Mar 04].
Available from: http://etd.aau.edu.et/dspace/handle/123456789/1257.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Misrak G. Three-Level Laser Dynamics with Coherent and Squeezed Light
. [Thesis]. Addis Ababa University; 2012. Available from: http://etd.aau.edu.et/dspace/handle/123456789/1257
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Victoria University of Wellington
23.
Tyrrell, Sarah.
Endemic Light.
Degree: 2017, Victoria University of Wellington
URL: http://hdl.handle.net/10063/6830
► This thesis explores endemic light and atmosphere through the shifting scales of three architectural interventions. These interventions are guided by site and theoretical research, providing…
(more)
▼ This thesis explores endemic
light and atmosphere through the shifting scales of three architectural interventions. These interventions are guided by site and theoretical research, providing justification for the notion of endemic
light. This notion develops upon the concept of site specific architecture and place. It is the synthesis of site context – combining both ephemeral and phenomenological qualities to create engaging and evocative architectural experiences. Analysis of the Mackenzie Basin site established an overarching understanding of the atmospheric, physical, social and historical contexts of the area. Peter Zumthor, Steven Holl, Juhani Pallasmaa and Christian Norberg-Schulz provide key justifications for the theoretical investigation of
light, atmosphere, and place; as well as ongoing precedence for the research through design process.
This process explores three interventions, moving up in scale from an installation, to a domestic dwelling, and finally a public building. The installation operates at an interactive scale, exploring abstract concepts of condensing
light within a space, through manipulation of
light, colour and texture. The domestic scale expands on this research, developing condensed
light and atmosphere at a habitable scale. Through designing for
light and atmosphere the dwelling becomes a device for endemic atmospheric experiences in a domestic context. The final scale explores a public building in the form of a town centre for Twizel. This intervention adapts the notion of condensing
light within interior spaces, instead exploring at an urban scale, intensifying them externally through courtyards and exterior building form. The thesis concludes, that successful and immersive architectural experiences are generated through strong ephemeral and phenomenological connections and engagement with site and endemic
light.
Advisors/Committee Members: Twose, Simon.
Subjects/Keywords: Architecture; Light; Atmosphere
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tyrrell, S. (2017). Endemic Light. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/6830
Chicago Manual of Style (16th Edition):
Tyrrell, Sarah. “Endemic Light.” 2017. Masters Thesis, Victoria University of Wellington. Accessed March 04, 2021.
http://hdl.handle.net/10063/6830.
MLA Handbook (7th Edition):
Tyrrell, Sarah. “Endemic Light.” 2017. Web. 04 Mar 2021.
Vancouver:
Tyrrell S. Endemic Light. [Internet] [Masters thesis]. Victoria University of Wellington; 2017. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10063/6830.
Council of Science Editors:
Tyrrell S. Endemic Light. [Masters Thesis]. Victoria University of Wellington; 2017. Available from: http://hdl.handle.net/10063/6830

Rice University
24.
Li, Yang.
Angle- and Spectral-Dependent Light Scattering from Plasmonic Nanocups.
Degree: MS, Natural Sciences, 2012, Rice University
URL: http://hdl.handle.net/1911/77330
► The interaction of light with small designed particles and structures gives rise to an increasing number of phenomena of potentially dramatic technological importance, such as…
(more)
▼ The interaction of
light with small designed particles and structures gives rise to an increasing number of phenomena of potentially dramatic technological importance, such as metamaterials, superlens focusing, and enhanced spectroscopy. Metallic nanostructures with their geometry-dependent optical resonances are a topic of intense current interest due to their ability to manipulate
light in ways not possible with conventional optical materials. A particularly fascinating aspect of these systems is the recently realized possibility of creating optical frequency “magnetic plasmon” responses of comparable magnitude to the “electric plasmon” response. Au nanocups at their magnetoinductive resonance have the unique ability to redirect scattered
light in a direction dependent on cup orientation, as a true three-dimensional nanoantenna.
As optical frequency nanoantennas, reduced-symmetry plasmonic nanoparticles have
light-scattering properties that depend strongly on geometry, orientation, and variations in dielectric environment. Here we investigate how these factors influence the spectral and angular dependence of
light scattered by Au nanocups. A simple dielectric substrate causes the axial, electric dipole mode of the nanocup to deviate substantially from its characteristic cos square free space scattering profile, while the transverse, magnetic dipole mode remains remarkably insensitive to the presence of the substrate. Nanoscale irregularities of the nanocup rim and the local substrate permittivity have a surprisingly large effect on the spectral- and angle-dependent
light-scattering properties of these structures. The different angular scattering and wavelength response from the axial and transverse nanocup modes make the nanocup an interesting particle for the nanoscale manipulation of
light in three dimensions. The sensitivity of this system to geometric and environmental factors may present opportunities for active, substrate-mediated control of
light scattering.
Advisors/Committee Members: Nordlander, Peter J. (advisor), Halas, Naomi J. (committee member), Link, Stephan (committee member).
Subjects/Keywords: Nanocup; Light-bending
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, Y. (2012). Angle- and Spectral-Dependent Light Scattering from Plasmonic Nanocups. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/77330
Chicago Manual of Style (16th Edition):
Li, Yang. “Angle- and Spectral-Dependent Light Scattering from Plasmonic Nanocups.” 2012. Masters Thesis, Rice University. Accessed March 04, 2021.
http://hdl.handle.net/1911/77330.
MLA Handbook (7th Edition):
Li, Yang. “Angle- and Spectral-Dependent Light Scattering from Plasmonic Nanocups.” 2012. Web. 04 Mar 2021.
Vancouver:
Li Y. Angle- and Spectral-Dependent Light Scattering from Plasmonic Nanocups. [Internet] [Masters thesis]. Rice University; 2012. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/1911/77330.
Council of Science Editors:
Li Y. Angle- and Spectral-Dependent Light Scattering from Plasmonic Nanocups. [Masters Thesis]. Rice University; 2012. Available from: http://hdl.handle.net/1911/77330

University of Victoria
25.
Novales Flamarique, Inĩgo.
Vertebrate detection of polarized light.
Degree: Department of Biology, 2017, University of Victoria
URL: http://hdl.handle.net/1828/8135
► In addition to intensity and colour, the retinas of many invertebrates are capable of light detection based on its linear polarization (Wehner, 1983). The detection…
(more)
▼ In addition to intensity and colour, the retinas of many
invertebrates are capable of
light detection based on its
linear polarization (Wehner, 1983). The detection mechanism
permitting this capability is based on the intrinsic dichroism
of chromophores oriented along rhabdomeric microvilli. In
vertebrates, however, except for anchovies (Fineran & Nicol,
1978), such axial dichroism is absent rendering vertebrate
outer segments insensitive to the polarization of axially incident
light. Nonetheless, there is evidence for
polarization sensitivity in a few species of fish (goldfish,
rainbow trout and sunfish). But the findings for goldfish and
rainbow trout appear contradictory to those for the green
sunfish (Parkyn & Hawryshyn, 1993), and a detection mechanism
that could explain polarization sensitivity for lower
vertebrates in general is unknown.
This thesis was undertaken to try to solve some of these unknowns by investigating: 1) the neural polarization signal,
at the level of the optic nerve, in fish species from four
groups with distinct retinal cone mosaics (rainbow trout,
green and pumpkinseed sunfishes, common white sucker, and
northern anchovy), 2) the ultrastructure and
light transmission
properties of different cone types (single, twin
and double cones) , and 3) the characteristics of the
underwater polarized
light field that could permit the observed laboratory behaviours in nature. I measured compound
action potential (CAP) responses from the optic nerve of live
anaesthetized fish to evaluate the possibility that a fish
could detect the orientation of the electric field of linearly
polarized
light (mathematically-designated as the E-vector) .
Results from these studies showed that rainbow trout and the
northern anchovy were polarization-sensitive, but both species
of sunfish and the common white sucker were not. In addition,
CAP measurements conducted with rainbow trout exposed to
light
stimuli of varying polarization percentages showed, in
conjunction with underwater polarized
light measurements, that
the use of polarized
light in this animal was restricted to
crepuscular time periods. To try to understand why some fish
species were polarization-sensitive and others were not, I
carried out microscopy studies of retinal cones. Optical
measurements of transmitted polarized
light through the length
of cones showed: 1) small cone birefringence (retardance <
2nm) , and 2) preferential transmission of polarized
light that
was parallel to the partition dividing twin and double cones
(single cones were isotropic). In addition, histological
studies showed that the partition in trout double cones was
tilted with respect to the vertical while that of twin cones
in sunfish was straight. We envisioned that the higher index
of refraction of the partition with respect to the surrounding
cell cytoplasm would make it behave as a mirror, reflecting
and polarizing incident
light. A large optical model was built to test this idea consisting of two photodiodes evenly spaced
on…
Advisors/Committee Members: Hawryshyn, Craig W. (supervisor).
Subjects/Keywords: Fishes; Light; Vertebrates
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Novales Flamarique, I. (2017). Vertebrate detection of polarized light. (Thesis). University of Victoria. Retrieved from http://hdl.handle.net/1828/8135
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Novales Flamarique, Inĩgo. “Vertebrate detection of polarized light.” 2017. Thesis, University of Victoria. Accessed March 04, 2021.
http://hdl.handle.net/1828/8135.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Novales Flamarique, Inĩgo. “Vertebrate detection of polarized light.” 2017. Web. 04 Mar 2021.
Vancouver:
Novales Flamarique I. Vertebrate detection of polarized light. [Internet] [Thesis]. University of Victoria; 2017. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/1828/8135.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Novales Flamarique I. Vertebrate detection of polarized light. [Thesis]. University of Victoria; 2017. Available from: http://hdl.handle.net/1828/8135
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Victoria University of Wellington
26.
Amour, Sol.
Body | Sense Experience: An Architecture of Atmosphere and Light.
Degree: 2012, Victoria University of Wellington
URL: http://hdl.handle.net/10063/2602
► This thesis explores notions of the immaterial and metaphysical in architecture. It seeks to ‘elicit a sense of wonder’ in a participant of experiential space…
(more)
▼ This thesis explores notions of the immaterial and metaphysical in architecture. It seeks to ‘elicit a sense of wonder’ in a participant of experiential space by promoting awareness of the metaphysical through atmosphere, affect and
light. Architecture is more than purely a physical tangible object - it also crosses into the realms of the intangible, ephemeral and perceptive. The immaterial within architecture is just as important as the physical, if not more so, where a participant’s perception of space is informed more by the swirling climate of atmospheric ephemera than that of material form. It is through
light that architecture is enlivened and imbued with character and meaning and it is the immaterial aspect of
light that evokes a sense beauty and wonder within built form. The body/sense experience, looked at through the lens of the affect, evokes an intimately humanistic response to architectural space that is unbound by race, religion, culture or creed. This allows for architecture to become the catalyst for an awareness of the metaphysical, evoked through atmosphere, affect and
light.
Ultimately this thesis argues that the intangible, elusive and transitory moments within architecture are just as important as the physically present tangible object. It stresses the importance of architecture that is understood and experienced holistically, where created atmospheres, interaction of
light and bodily cognition of space shape the way in which the built world is perceived.
Advisors/Committee Members: Campeys, Philippe.
Subjects/Keywords: Affect; Atmosphere; Light
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Amour, S. (2012). Body | Sense Experience: An Architecture of Atmosphere and Light. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/2602
Chicago Manual of Style (16th Edition):
Amour, Sol. “Body | Sense Experience: An Architecture of Atmosphere and Light.” 2012. Masters Thesis, Victoria University of Wellington. Accessed March 04, 2021.
http://hdl.handle.net/10063/2602.
MLA Handbook (7th Edition):
Amour, Sol. “Body | Sense Experience: An Architecture of Atmosphere and Light.” 2012. Web. 04 Mar 2021.
Vancouver:
Amour S. Body | Sense Experience: An Architecture of Atmosphere and Light. [Internet] [Masters thesis]. Victoria University of Wellington; 2012. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10063/2602.
Council of Science Editors:
Amour S. Body | Sense Experience: An Architecture of Atmosphere and Light. [Masters Thesis]. Victoria University of Wellington; 2012. Available from: http://hdl.handle.net/10063/2602

University of Illinois – Urbana-Champaign
27.
Arnold, Jennifer.
Actin's role in signaling light-induced phase shifts in the mammalian circadian clock.
Degree: PhD, 0325, 2013, University of Illinois – Urbana-Champaign
URL: http://hdl.handle.net/2142/42146
► The actin cytoskeleton is a critical part of intracellular structure, responsible for the general shape and integrity of all cells. New insights into the dynamic…
(more)
▼ The actin cytoskeleton is a critical part of intracellular structure, responsible for the general shape and integrity of all cells. New insights into the dynamic nature of the cytoskeleton describe additional roles for actin, including synaptic plasticity in the hippocampus, regulation of hormone release in endocrine cells, and as a signaling component involved in transcription. My research focused on the hypothesis that changes in actin state contribute to
light-induced changes in the state of the circadian clock in the mammalian brain. In early night, the cells of the mammalian circadian clock, in the SCN, initiate a series of signaling events to translate environmental
light into transcriptional changes which induce a delay of clock state. This signaling pathway, mediated by glutamate, involves activation of NMDA receptors, nitric oxide synthesis, and opening of ryanodine receptors with subsequent influx of calcium from intracellular stores. Activation of this cascade results in up-regulation of the clock genes, Period 1 and Period 2. This induction is mediated in part via CRE elements, through activation of the transcription factor, CREB. Connecting upstream signaling processes with the end result of transcriptional changes was a target of this study.
Based on responses to glutamate in vitro, I hypothesized that activation of the early night
light signaling pathway results in a rapid and transient decrease in actin polymerization, which is required for the phase delay to occur. I first characterized actin state around a day-night cycle, in order to determine whether sensitivity to actin depolymerization changes over this period. To this end, I showed that polymerized actin peaks in early night, but this oscillation in actin state is abolished in mice rendered genetically arrhythmic, the BMAL1 -/- mice. Secondly, I measured actin state after
light exposure, and found that brief
light pulses induced a breakdown of polymerized actin. By injecting the actin-stabilizing chemical jasplakinolide directly into the mouse SCN, I demonstrated a requirement for actin breakdown in mediating the phase delay, while conversely I induced a delay by injecting the actin depolymerzing agent latrunculin A. Thirdly, I measured induction of potential downstream effectors upon actin depolymerization, to analyze the effect of actin dynamics on transcription. Breaking down the cytoskeleton with latrunculin A resulted in activation of the MAP kinase component PERK, as well as a potential activation of PCREB. The importance of actin dynamics on CRE-mediated transcription was demonstrated using electrophysiological recordings, in which inhibition of CRE-mediated transcription abolished the effects of latrunculin A on clock state. Finally, I showed that actin depolymerization induced the clock gene Period 2, providing a potential link between cytoplasmic signaling events that facilitate actin remodeling and nuclear mechanisms of transcription. This work, together with previous in vitro studies, places actin dynamics firmly…
Advisors/Committee Members: Gillette, Martha U. (advisor), Gillette, Martha U. (Committee Chair), Gillette, Rhanor (committee member), Roy, Edward J. (committee member), Raetzman, Lori T. (committee member), Brieher, William M. (committee member).
Subjects/Keywords: circadian; Actin; light
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Arnold, J. (2013). Actin's role in signaling light-induced phase shifts in the mammalian circadian clock. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/42146
Chicago Manual of Style (16th Edition):
Arnold, Jennifer. “Actin's role in signaling light-induced phase shifts in the mammalian circadian clock.” 2013. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed March 04, 2021.
http://hdl.handle.net/2142/42146.
MLA Handbook (7th Edition):
Arnold, Jennifer. “Actin's role in signaling light-induced phase shifts in the mammalian circadian clock.” 2013. Web. 04 Mar 2021.
Vancouver:
Arnold J. Actin's role in signaling light-induced phase shifts in the mammalian circadian clock. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2013. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/2142/42146.
Council of Science Editors:
Arnold J. Actin's role in signaling light-induced phase shifts in the mammalian circadian clock. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2013. Available from: http://hdl.handle.net/2142/42146

University of Arizona
28.
Al Bawab, Elias.
Transcriptive Method to Predict Daylight Intensity Curves in Architectural Spaces
.
Degree: 2019, University of Arizona
URL: http://hdl.handle.net/10150/636503
► Consequences of technology evolution and its ease of use have made humans entirely dependent upon them without thinking of side effects on human's health as…
(more)
▼ Consequences of technology evolution and its ease of use have made humans entirely dependent upon them without thinking of side effects on human's health as well as the environment, and the future. One of these technologies is artificial
light, which is very important. Its excessive use, however, has led to forgetting the importance of daylight. Daylight is one of the essential strategies to save energy, and Natural
light also improves livability and helps to reduce the carbon dioxide footprint. This thesis addresses the complexity of natural daylighting and the complexity in calculating
light intensity by using hand calculations, building a physical model or using computer software for simulation. Additionally, a significant amount of time and resources is consumed, which in turn makes students, architects, and professionals less interested in daylight analysis. This observation prompted me to investigate a new and simple method to understand how
light moves through and renders a space so that we can bring back the use of daylight in our lives. The method enhances user’s—architects, students, teachers—intuition to speculate on plotting daylight intensity curves within a space. Verification of the method is accomplished by building of a physical model and testing it at the House Energy Doctor Overcast Sky Simulator. To demonstrate the effectiveness of the method an application is fully explored on a simple geometric space. The result confirmed the research that within a short period of time and without expensive means users can speculate the daylight intensity curve in any architectural space by understanding the four variables that are affecting the daylight penetration inside the space. Using this method will enhance integrating daylight into spaces for saving energy and building a better future.
Advisors/Committee Members: Chalfoun, Nader (advisor), Moeller, Colby (committeemember), Youssef, Omar (committeemember).
Subjects/Keywords: daylight;
light intensity
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Al Bawab, E. (2019). Transcriptive Method to Predict Daylight Intensity Curves in Architectural Spaces
. (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/636503
Chicago Manual of Style (16th Edition):
Al Bawab, Elias. “Transcriptive Method to Predict Daylight Intensity Curves in Architectural Spaces
.” 2019. Masters Thesis, University of Arizona. Accessed March 04, 2021.
http://hdl.handle.net/10150/636503.
MLA Handbook (7th Edition):
Al Bawab, Elias. “Transcriptive Method to Predict Daylight Intensity Curves in Architectural Spaces
.” 2019. Web. 04 Mar 2021.
Vancouver:
Al Bawab E. Transcriptive Method to Predict Daylight Intensity Curves in Architectural Spaces
. [Internet] [Masters thesis]. University of Arizona; 2019. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10150/636503.
Council of Science Editors:
Al Bawab E. Transcriptive Method to Predict Daylight Intensity Curves in Architectural Spaces
. [Masters Thesis]. University of Arizona; 2019. Available from: http://hdl.handle.net/10150/636503

University of Manchester
29.
Brooks, Elisabeth.
Effects of early light environment on the photic response
of the circadian system.
Degree: 2012, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:181604
► Early light environment has been shown to alter locomotor activity behaviour in adult rats and mice when exposed to constant light (LL), constant darkness (DD)…
(more)
▼ Early
light environment has been shown to alter
locomotor activity behaviour in adult rats and mice when exposed to
constant
light (LL), constant darkness (DD) or 12:12 hour
light-dark cycles (LD). In particular, exposure to LL during
lactation results in an increased ability to cope with exposure to
LL as adults, implying that the ability to interpret
light
information is altered depending on early
light environment.
Therefore, the aim of this project was to explore how early
light
environment affects the photic response of the circadian system.The
retina forms the first component of the photic response of the
circadian system. We wanted to know whether being raised in DD, LD
or LL would alter retinal function or structure in adult CD1
(albino) and C57BL/6J (pigmented) mice. We found that in CD1 mice,
being raised in LL caused significant retinal damage and a
significant reduction in retinal function. In C57BL/6J mice, we saw
no such changes, implying that any changes that we see in behaviour
would be due to alterations further downstream, such as the
suprachiasmatic nucleus (SCN), site of the master circadian clock
in the mammalian brain. We next exposed C57BL/6J mice to LL and
found that mice raised in DD had significantly longer taus than
mice raised in LL, implying that mice raised in DD are more
sensitive to
light than mice raised in LL.Previous work has shown
that early
light environment alters neuropeptide and astrocyte
expression in the SCN of C57BL/6J mice. Furthermore, early
light
environment produces opposite behavioural responses in CD1 and
C57BL/6J mice when exposed to LD as adults. We therefore examined
how neuropeptide and astrocyte expression would be affected by
early
light environment in CD1 mice and whether this would reflect
the differential behavioural response. We found that neuropeptide
and astrocyte expression in the SCN seemed to be affected by the
level of retinal damage and/or the type and intensity of the
light
source used. This sensitivity to lighting environment makes CD1
mice unsuitable for further studies on the photic response of the
circadian system. Pigmented mice were used for the remainder of
this project.The photic response of the circadian system can be
quantified using a phase response curve (PRC) which measures
behavioural responses to
light pulses administered at different
times of day. We measured the effect of a
light pulse on the delay
and advance portion of the PRC and found no differences due to
early
light environment, implying that the phasic effect of
light
is not altered by early
light environment.
Light pulses
administered during the subjective night result in the upregulation
of SCN intracellular photic signalling pathways. After a
light
pulse given during the early subjective night, we found no
differences in the upregulation of different components of the
photic signalling pathway due to early
light environment indicating
early
light environment does not seem to affect the initial photic
signalling pathway in the SCN.Finally, recent advances in molecular
biology…
Advisors/Committee Members: LUCAS, ROBERT RJ, Lucas, Robert, Canal, Maria.
Subjects/Keywords: Circadian; Light; Development
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Record Details
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Brooks, E. (2012). Effects of early light environment on the photic response
of the circadian system. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:181604
Chicago Manual of Style (16th Edition):
Brooks, Elisabeth. “Effects of early light environment on the photic response
of the circadian system.” 2012. Doctoral Dissertation, University of Manchester. Accessed March 04, 2021.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:181604.
MLA Handbook (7th Edition):
Brooks, Elisabeth. “Effects of early light environment on the photic response
of the circadian system.” 2012. Web. 04 Mar 2021.
Vancouver:
Brooks E. Effects of early light environment on the photic response
of the circadian system. [Internet] [Doctoral dissertation]. University of Manchester; 2012. [cited 2021 Mar 04].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:181604.
Council of Science Editors:
Brooks E. Effects of early light environment on the photic response
of the circadian system. [Doctoral Dissertation]. University of Manchester; 2012. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:181604

Virginia Tech
30.
Sutjipto, Michael.
Half-Lit: Georgetown University Center for the Study of Light.
Degree: M. Arch., Architecture, 2012, Virginia Tech
URL: http://hdl.handle.net/10919/33459
► It is the intention of this thesis to explore the idea of half light, as put forward by Luis Barragan: â Architects are forgetting the…
(more)
▼ It is the intention of this thesis to explore the idea of half
light, as put forward by Luis Barragan:
â Architects are forgetting the need of human beings for half-
light, the sort of
light that imposes a tranquility, in their living rooms as well as in their bedrooms.â
The exploration will occur through photography, writing, and architectural design. But most of all, the emphasis will be on developing a rich internal vocabular and set of intuitions, and then see what architecture emerges from these intuitions.
Advisors/Committee Members: Feuerstein, Marcia F. (committeechair), Holt, Jaan (committee member), Emmons, Paul F. (committee member).
Subjects/Keywords: cone; architecture; light
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share





❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Sutjipto, M. (2012). Half-Lit: Georgetown University Center for the Study of Light. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/33459
Chicago Manual of Style (16th Edition):
Sutjipto, Michael. “Half-Lit: Georgetown University Center for the Study of Light.” 2012. Masters Thesis, Virginia Tech. Accessed March 04, 2021.
http://hdl.handle.net/10919/33459.
MLA Handbook (7th Edition):
Sutjipto, Michael. “Half-Lit: Georgetown University Center for the Study of Light.” 2012. Web. 04 Mar 2021.
Vancouver:
Sutjipto M. Half-Lit: Georgetown University Center for the Study of Light. [Internet] [Masters thesis]. Virginia Tech; 2012. [cited 2021 Mar 04].
Available from: http://hdl.handle.net/10919/33459.
Council of Science Editors:
Sutjipto M. Half-Lit: Georgetown University Center for the Study of Light. [Masters Thesis]. Virginia Tech; 2012. Available from: http://hdl.handle.net/10919/33459
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