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Showing 1 to 20 of 1224 for “"GA"”.

  1. Herstellung und Charakterisierung von kanten- und vertikalemittierenden (Ga)InAs/Ga(In)As-Quantenpunkt(laser)strukturen

    Krebs, RolandUniversität Würzburg

    … Laserstruktur mit sechs Quantenpunktschichten ergab einen Wert von 16.6 1/cm (für den Grundzustandsübergang) bei einer Stromdichte von 850 A/cm^2. Dadurch ist Laserbetrieb auf dem Grundzustand bis zu einer Resonatorlänge von 0.8 mm möglich. Für eine Laserstruktur mit sechs asymmetrischen …

    wurz-thes Repository record

  2. Molekularstrahlepitaxie im Materialsystem Ga(N,Sb)

    Cristea, Peter

    … sich mit dem Sb-Einbau in epitaktischen GaN-Schichten und dem N-Einbau in GaSb-Schichten im Hinblick auf die erstmalige Herstellung eines GaNxSb1-x - Mischkristalls. Die Schichten wurden mit Hilfe der Molekularstrahlepitaxie unter Verwendung von NH3 als N-Quelle, sowie Ga- und …

    freiburg-diss Repository record

  3. Undersampling GA-SVM for network intrusion detection

    He, Zhenyu

    … Genetic Algorithm-Support Vector Machine (GA-SVM) method to handle this problem. It applies an undersampling method in GA-SVM. To solve the multiclassification problem with a binary classifier, this work proposes to utilize the undersampling GA-SVM with several classic structures. After …

    njit Repository record

  4. The ratio gA/gV in cavity QCD

    Page, Philip RDepartment of Physics1991

    … in the weak and strong coupling constants to gA and gv for neutron beta decay. Up and down quarks are assumed massless. The gauge-independent divergences from the loop diagrams cancel each other and can be regularized dimensionally, making renormalization unnecessary. We find that the weak …

    cape-town Repository record

  5. The Role of Cd and Ga in the Cu(In,Ga)S2/CdS Heterojunction Studied with X-Ray Spectroscopic Methods

    Johnson, Benjamin2010

    … Zellen mit dem Aufbau Glas/Mo/Cu(In,Ga)S2/CdS/i-ZnO/n+-ZnO gehören zur Zeit zu den erfolgreichsten Dünnschicht Solarzellen. Dabei dient das Cu(In,Ga)S2 (CIS) als Absorber, das CdS als Pulverschicht und das ZnO als Fensterschicht Das Ziel dieser Arbeit ist die Untersuchung des …

    tu-berlin Repository record

  6. Molekularstrahlepitaxie und Charakterisierung von (Ga,Mn)As Halbleiterschichten

    Schott, Gisela MarieluiseUniversität Würzburg

    … der Elektronik wird bereits der III-V Halbleiter GaAs eingesetzt und ferromagnetisches (Ga,Mn)As könnte in die vorhandenen optischen und elektronischen Bauteile integriert werden. Deshalb ist eine intensive Erforschung der kristallinen Qualität, der elektrischen und magnetischen Eigenschaften von …

    wurz-thes Repository record

  7. Energy absorption in Ni-Mn-Ga/ polymer composites

    Feuchtwanger, JorgeMassachusetts Institute of Technology2006

    In recent years Ni-Mn-Ga has attracted considerable attention as a new kind of actuator material. Off-stoichiometric single crystals of Ni2MnGa can regularly exhibit 6% strain in tetragonal martensites and orthorhombic martensites have shown up to 10% strain when subjected to a magnetic field. …

    mit Repository record

  8. Reversible Relaxationsphänomene imelektrischen Transport von Cu(In,Ga)Se2

    Meyer, ThorstenUniversität Oldenburg

    Untersucht werden reversible Relaxationsphänomene Mit großen Relaxationszeiten (einige Stunden bei 300K) im elektrischen Transport von p-leitenden CIGS- Schichten und ZnO/CdS/CIGS-Solarzellen. ein wichtiger Effekt ist die Voc-Relaxation der Zellen d.h. langsame Anstieg Leerlaufspannung (Voc) unter …

    oldenburg Repository record

  9. Why the Japanese double-ga construction cannot be scrambled.

    Hoye, Masako OkuUniversity of North Texas2003

    … a comprehensive study of the Japanese double-ga construction and offers an explanation as to why the Japanese double-ga construction does not allow scrambling. In chapter 2, the particle-ga and the particle-wa are defined as the focus marker and the topic marker respectively. The different …

    unt Repository record

  10. Principal Instructional Leadership in Ga High Poverty Elementary Schools

    Spires, Ginger W2015

    … purpose of this quantitative study was to investigate teachers’ perceptions of principal instructional leadership practices in Georgia Reward Highest Performing and Georgia Reward Highest Progress elementary schools. As such, this causal-comparative study identified the frequency of principal …

    gsu Repository record

  11. Wachstum und Realstruktur von epitaktischen (Al,Ga)N-Schichten

    Kirste, Lutz

    … auf die Realstruktur von binären GaN-, AlN- und ternären (Al,Ga)N-Schichten untersucht. Die Abscheidung der Schichten erfolgte heteroepitaktisch mittels Molekularstrahlepitaxie (MBE) auf den Substraten Al2O3 (0001), Si (111) und 6H-SiC (0001). <br>Die Untersuchungen konzentrierten …

    freiburg-diss Repository record

  12. Transverse acoustic actuation of Ni-Mn-Ga single crystals

    Simon, Jesse MatthewMassachusetts Institute of Technology2007

    … transverse acoustic actuation of {110}-cut Ni-Mn-Ga single crystals are discussed. In this actuation mode, crystals are used that have the {110}- type twinning planes parallel to the base of the crystal. The first method employs two 33-mode piezoelectric stacks, mounted at 45 deg to the base of a …

    mit Repository record

  13. Understanding the Corrosion of Low-Voltage Al-Ga Anodes

    Baker, Devon ScottVirginia Tech2015

    … a low current capacity and it operates at very negative voltages, leading to hydrogen generation at the steel cathode, which may cause hydrogen embrittlement. Aluminum can operate at less-negative voltages, therefore reducing hydrogen generation, but it forms a passive oxide film, preventing the …

    vt Repository record

  14. Mesoscopic Structures and Quantum Optical Properties of InAs/GaAs and Al[x]Ga[1-x]P/Al[y]Ga[1-y]P Semiconductors

    Nabetani, YoichiKyoto University1996

    本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである

    kyoto Repository record

  15. Charakterisierung und Optimierung von (Al, Ga)N-basierten UV-Photodetektoren

    Brendel, Moritz2016

    … geometry on the electro-optic properties of AlGaN-based metal-semiconductor-metal photodetectors (MSM PD) was investigated. The focus was on the realization of Schottky-type MSM PD suitable for photodetection below wavelengths of 300 nm with a high external quantum efficiency (EQE). First, …

    tu-berlin Repository record

  16. An analysis of human-coyote relationship in metropolitan Atlanta, Ga

    Hooper, Jeremy W.2016

    … with human-coyote interactions; and 3) investigate the validity of claims of coyote-pet attacks and the potential effects of assuming a coyote attacked a pet. Human-coyote interactions were positively correlated with open space landscapes. A change in scale led to differences in both how …

    utc Repository record

  17. Investigating the evolution of cytochromes P450 involved in GA biosynthesis

    Mafu, Sibongile2013

    <p>Vascular plants invariably contain a class II diterpene cyclase (EC 5.5.1.x), as an ent-copalyl diphosphate synthase is required for gibberellin phytohormone biosynthesis. This has provided the basis for evolution of a functionally diverse enzymatic family. A bifunctional diterpene synthase was …

    iastate Repository record

  18. Queer subtext and fanmade text in Maria-sama ga miteru

    Fugate, NatalieUniversity of Illinois at Urbana-Champaign2022

    Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-04-06 without embargo terms

    uiuc Repository record

  19. Economy, kinship and fertility among the Ga of southern Ghana

    Fayorsey, Clara KorkorUniversity of Cambridge1993

    cambridge Repository record

  20. InAs/Ga(In)Sb superlattice based infrared detectors using nBn design

    Bishop, Greg

    … have large signal over noise ratio and their bandgap can be tuned to span 1-32 μm wavelength range. However, large tunneling and Auger dark currents due to low electron effective mass in MCT detectors require operation at cryogenic temperatures (77-100 K). The cooling requirement limits the …

    unm Repository record

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