Dissertationen zum Thema „Trap detection“
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Örn, Fredrik. „Computer Vision for Camera Trap Footage : Comparing classification with object detection“. Thesis, Uppsala universitet, Avdelningen för visuell information och interaktion, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-447482.
Der volle Inhalt der QuelleMurray, Jacolin Ann. „High Flow Air Sampling for Field Detection Using Gas Chromatography-Mass Spectrometry“. BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2414.
Der volle Inhalt der QuelleSudholz, Ashlee. „Machine learning for the automated detection of deer in drone and camera trap imagery“. Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/212981/1/Ashlee_Sudholz_Thesis.pdf.
Der volle Inhalt der QuelleGoeders, James E. „Resolved sideband spectroscopy for the detection of weak optical transitions“. Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/49082.
Der volle Inhalt der QuelleKracke, Holger [Verfasser]. „Detection of individual spin transitions of a single proton confined in a cryogenic Penning trap / Holger Kracke“. Mainz : Universitätsbibliothek Mainz, 2013. http://d-nb.info/1032368268/34.
Der volle Inhalt der QuelleArnesson, Pontus, und Johan Forslund. „Edge Machine Learning for Wildlife Conservation : Detection of Poachers Using Camera Traps“. Thesis, Linköpings universitet, Reglerteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-177483.
Der volle Inhalt der QuelleCummings, Elizabeth Ann. „Optical Detection of Ultracold Neutral Calcium Plasmas“. Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd692.pdf.
Der volle Inhalt der QuelleHeck, Michael [Verfasser], und Klaus [Akademischer Betreuer] Blaum. „Investigation of various excitation and detection schemes of stored ions in a Penning trap / Michael Heck ; Betreuer: Klaus Blaum“. Heidelberg : Universitätsbibliothek Heidelberg, 2013. http://d-nb.info/1177148544/34.
Der volle Inhalt der QuelleChalkha, Achouak. „Glow discharge electron impact ionisation and improvements of linear ion trap operating mode for in-the-field detection of illegal substances“. Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4704/document.
Der volle Inhalt der QuelleAnđelković, Zoran [Verfasser]. „Setup of a Penning trap for precision laser spectroscopy at HITRAP : trapping, cooling and electronic detection of externally produced ions / Zoran Andelkovic“. Mainz : Universitätsbibliothek Mainz, 2012. http://d-nb.info/1023187825/34.
Der volle Inhalt der QuelleFields, Robert Eugene 1958. „Application of a quadrupole ion trap mass spectrometer to ICP-MS and the direct detection of x-rays using a charge-injection device“. Diss., The University of Arizona, 1997. http://hdl.handle.net/10150/282314.
Der volle Inhalt der QuelleXie, Xiaofeng. „High Flow Air Sampler for Rapid Analysis of Volatile and Semi-Volatile Organic Compounds“. BYU ScholarsArchive, 2015. https://scholarsarchive.byu.edu/etd/6165.
Der volle Inhalt der QuelleRoux, Christian-Eric [Verfasser], und Klaus [Akademischer Betreuer] Blaum. „High-resolution mass spectrometry: The trap design and detection system of Pentatrap and new Q-values for neutrino studies / Christian-Eric Roux ; Betreuer: Klaus Blaum“. Heidelberg : Universitätsbibliothek Heidelberg, 2012. http://d-nb.info/1177039915/34.
Der volle Inhalt der QuelleEbrahimi, Mohammad Sadegh [Verfasser], und Wolfgang [Akademischer Betreuer] Quint. „Non-Destructive Detection and Resistive Cooling of Highly-Charged-Ion Ensembles for Precision Spectroscopy in the ARTEMIS Penning Trap / Mohammad Sadegh Ebrahimi ; Betreuer: Wolfgang Quint“. Heidelberg : Universitätsbibliothek Heidelberg, 2018. http://d-nb.info/1177251744/34.
Der volle Inhalt der QuelleKim, Hang Joon. „The Generalized Multiset Sampler: Theory and Its Application“. The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1338332071.
Der volle Inhalt der QuelleKrasselt, Cornelius, Jörg Schuster und Borczyskowski Christian von. „Photoinduced hole trapping in single semiconductor quantum dots at specific sites at silicon oxide interfaces“. Universitätsbibliothek Chemnitz, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-122745.
Der volle Inhalt der QuellePaolino, Roberta Montanheiro. „Importância das Áreas de Preservação Permanente (APP) ripárias para a mastofauna no nordeste do Estado de São Paulo“. Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/59/59139/tde-19102015-122518/.
Der volle Inhalt der QuelleThe habitat loss and fragmentation, the overexploitation, the pollution and the introduction of alien species have threatened the biodiversity and increased extinction rates. Therefore, some legal resolutions aim to preserve it such as the Permanente Preservation Areas (PPA) in Brazil, which have been the focus of a great discussion regarding its configuration after the approval of the law Nº 12.651/2012 that changed the Brazilian Forest Code. Thus, the purpose of this study is to analyse if the PPA are maintaining the diversity of medium and large sized mammals in a region of intensive agriculture and sylviculture in the northeast of the state of São Paulo. Additionally to the community approach, the importance of PPA was assessed through the analysis of its effect on the relative mean abundance of Leopardus pardalis (ocelot). We used camera-traps in three study areas: Jataí Ecological Station, Luiz Antônio Experimental Station and its buffer, in the municipality of Luiz Antônio; the Cara Preta Farm, which has PPA and Legal Reserves (LR) of the International Paper company (IP), and its buffer in São Simão; and the State Forest of Cajuru and the Dois Córregos Farm, which has PPA and LR of the IP, and its buffer, in Cajuru and Altinópolis. A total of 208 points was sampled randomly, 169 outside and 39 inside PPA. Cameras worked during 30 days at each point, 24 hours a day, from April to September in 2013 at the first area and in 2014 at the second and third areas. We used rarefaction curves of observed richness and the Wildlife Picture Index (WPI) to compare the diversity inside and outside PPA. The WPI deals with imperfection detection because it is a geometric mean of the occupancy of observed species. We estimated the detection and occupancy probabilities by the multi-species occupancy model with bayesian analysis in R 3.1.1 and JAGS 3.4 with package jagsUI. We analysed the effect of the site covariates minimum distance of unpaved road, rain and temperature (linear and quadratic) on detection, and of quantities of native forest, sylviculture and sugarcane in a buffer of 200 ha of the sample points on occupancy. The values of occupancy were used to compute the WPI for points inside and outside PPA inside and outside protected areas (PA), which have the diversity expected in the region. Moreover, we estimated the relative mean abundance (lambda) of ocelot by Royle & Nichols models with the effect of site covariates: minimum distance of unpaved road, rain and temperature on detection, and of PPA, degree of protection and quantities of native forest, sylviculture and sugarcane in a buffer of 200 ha of the sample points on lambda. We recorded 34 species of mammals, 28 natives and six alien, in the three landscapes. The rarefaction curves did not showed statistic difference between the points inside and outside PPA, inside and outside PA. However, it was necessary four times the sample effort to record the same richness of points inside PPA outside PA in points outside PPA outside PA. It may have happened due to a low density of the populations in the matrix and a high density inside PPA, suggesting the role of PPA as corridors. The WPI distribution also did not show difference between the points inside and outside PPA. In addition, the PPA of PA had a high diversity when compared with PPA outside PA, suggesting that PPA are not maintaining the diversity of medium and large sized mammals expected in the region. This may be a result of PPAs configuration, because they are narrow, as most are just 30 m wide. Hence, they have less heterogeneity of micro-habitats and are highly affected by edge effect, what benefit generalist species over forest ones. Studies show that corridors must have a minimum of 140 to 400 m to possess the same community of continuous areas. Further, the landscape influences the role of PPA, because the surroundings of points outside PPA have almost the same quantity of native vegetation than the surroundings of points inside PPA in the study areas, what may also explain the lack of difference between them because native forest presented a positive effect on occupancy. On the other hand, PPA had a positive effect on the relative mean abundance of ocelot and were fundamental to the conservation of this species due to its role as habitat and corridors. The quantity of native forest was the covariate that best explained lambda, indicating that ocelots are dependent of dense vegetation. Overall, PPA were considered important to the conservation of mammals given its positive effect on ocelot population. Nevertheless, it is advisable to revise the current configuration of PPA, as is stated in the law, for these areas to really fulfill their role in biodiversity conservation.
Wang, Junting. „Miniaturized Electrostatic Ion Beam Trap Mass Analyzer“. BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3610.
Der volle Inhalt der QuelleMelconian, Dan G. „A positron detector for precision beta decay experiments from a magneto-optic trap“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ61469.pdf.
Der volle Inhalt der QuelleShen, Li. „Innovative Procedures for Travel Data Collection and Processing“. Thesis, The University of Sydney, 2014. http://hdl.handle.net/2123/14188.
Der volle Inhalt der Quelle氷, 韓., und Hyo Kan. „Studies on the application of two‐phase separation mixed solution to separation and detection technology“. Thesis, https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13127442/?lang=0, 2020. https://doors.doshisha.ac.jp/opac/opac_link/bibid/BB13127442/?lang=0.
Der volle Inhalt der Quelle博士(工学)
Doctor of Philosophy in Engineering
同志社大学
Doshisha University
Vadlejch, Daniel. „Charakterizace mikropohybu a jeho vliv na systematické posuvy frekvence kvadrupólového přechodu iontu vápníku zachyceného v Paulově pasti“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417151.
Der volle Inhalt der QuelleLinke, Norbert Matthias. „Background-free detection and mixed-species crystals in micro- and macroscopic ion-traps for scalable QIP“. Thesis, University of Oxford, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.669935.
Der volle Inhalt der QuelleBassaler, Julien. „Propriétés de transport électronique et performances de HEMT à canal AlGaN pour l'électronique de puissance“. Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALY002.
Der volle Inhalt der QuelleThe increasing demand for energy requires the development of new and suitable infrastructure, and the advancement of power electronics plays a pivotal role in addressing this need. Utilizing wide-bandgap semiconductors, due to their superior physical properties compared to silicon, emerges as the most promising avenue for designing high-performance components. While high electron mobility transistors (HEMT) based on GaN on silicon are already commercialized, their operating voltage is limited to 650 V, and they exhibit substantial performance degradation at elevated temperatures. HEMTs with AlGaN channels on silicon offer the potential to overcome these limitations while also offering lower production costs compared to SiC devices.Initially, an AlGaN/GaN/AlN heterostructure with an ultrathin channel was investigated. The objective was to enhance the breakdown voltage of the structure by minimizing the impact of the GaN channel. An analysis of the transport properties in this heterostructure using Hall effect measurements revealed relatively low electron mobility, coupled with anisotropy depending on the crystal orientation. This finding was substantiated by a structural analysis of the layer stack and the detection of electrically active defects, further supporting the conclusions drawn from the Hall effect measurements. Furthermore, charge carrier diffusion models indicated that interface roughness constituted the primary limiting mechanism for electron mobility.Subsequently, a detailed analysis of AlGaN channel heterostructures on silicon was conducted. Deep-level transient spectroscopy (DLTS) was used to study defects in the AlN layer epitaxially grown on the Si (111) substrate, which influences the overall quality of the heterostructure. Based on physical models, a study of the transport properties in these AlGaN channel heterostructures was then performed to determine the optimal Al compositions in the AlGaN layers. The impact of the aluminum fraction in the AlGaN channel on electronic mobility has been studied experimentally by Hall effect measurements. These experimental results were compared to charge carrier diffusion models and simulations to identify mobility-limiting factors. While alloy disorder was identified as the primary limiting mechanism in these structures, its impact was less pronounced than expected. Observations also indicated a less severe degradation of transport properties compared to GaN channel heterostructures, demonstrating superior thermal stability.Finally, the degradation of transistor performance with temperature was assessed based on the aluminum fraction in the AlGaN channel, substrate choice (Si and AlN), and gate structure. Increasing the aluminum fraction in the channel not only led to a reduction in on-state current but also reduced off-state leakage current, resulting in improved thermal stability of performance. The mechanisms responsible for gate leakage currents were identified by comparing models with experimental results, revealing that increasing the aluminum fraction effectively reduces the intensity of these mechanisms.In conclusion, AlGaN channel HEMTs exhibit superior thermal stability of on-state performance and a significant enhancement of off-state blocking characteristics. These devices thus hold excellent potential for high-voltage and high-temperature applications
Dong, Jingyuan. „Power System Disturbance Analysis and Detection Based on Wide-Area Measurements“. Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/30129.
Der volle Inhalt der QuellePh. D.
Sanguinetti, Stefano. „ATOMIC PARITY VIOLATION IN HEAVY ALKALIS: Detection by Stimulated Emission for Cesium and Traps for Cold Francium“. Phd thesis, Université Pierre et Marie Curie - Paris VI, 2004. http://tel.archives-ouvertes.fr/tel-00006785.
Der volle Inhalt der QuelleTran, Dang-Hoan Verfasser], Kai-Uwe [Akademischer Betreuer] [Sattler, Mohamed Medhat [Gutachter] Gaber und Peter [Gutachter] Fischer. „Change Detection in Streaming Data / Dang-Hoan Tran ; Gutachter: Mohamed Medhat Gaber, Peter Fischer ; Betreuer: Kai-Uwe Sattler“. Ilmenau : TU Ilmenau, 2013. http://d-nb.info/1178183904/34.
Der volle Inhalt der QuelleTran, Dang Hoan [Verfasser], Kai-Uwe [Akademischer Betreuer] Sattler, Mohamed Medhat [Gutachter] Gaber und Peter [Gutachter] Fischer. „Change Detection in Streaming Data / Dang-Hoan Tran ; Gutachter: Mohamed Medhat Gaber, Peter Fischer ; Betreuer: Kai-Uwe Sattler“. Ilmenau : TU Ilmenau, 2013. http://nbn-resolving.de/urn:nbn:de:gbv:ilm1-2013000513.
Der volle Inhalt der QuelleBazkir, Ozcan. „Realization Of Detector Based Spectral Responsivity Scale From Ultraviolet To Near Infrared Regions Of Electromagnetic Spectrum“. Phd thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/2/12605148/index.pdf.
Der volle Inhalt der Quelles, reflectance and internal quantum efficiency the scale between 350- 850 nm ranges was realized with an uncertainty of 0.05 %. Finally, the spectral responsivity scale in ultraviolet (UV) and near-infrared (NIR) regions was realized using Electrically Calibrated Pyroelectric Radiometer (ECPR). Optically characterizing the spatial non-uniformity of pyroelectric detector and its surface reflectance, the spectral responsivity scale was established with uncertainties ±
0.5-1.0 % between 250 nm and 350 nm and ±
0.5-1.5 % between 850 and 2500 nm.
Pässler, Roland. „Alternative Way for Detecting Franck-Condon Shifts from Thermally Broadened Photoneutralization Cross-Section Bands of Deep Traps in Semiconductors“. Universitätsbibliothek Chemnitz, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-201000270.
Der volle Inhalt der QuelleIkram, M. „Radio-frequency generation of an electron plasma in a Malmberg-Penning trap and its interaction with a stationary or pulsed electron beam“. Doctoral thesis, Università degli Studi di Milano, 2014. http://hdl.handle.net/2434/233616.
Der volle Inhalt der QuelleHata, Misako. „Comparison of a novel cell-based reporter assay and a competitive binding ELISA for the detection of thyrotropin-receptor (TSHR) autoantibodies (TRAb) in Graves' disease patients“. Ohio : Ohio University, 2010. http://www.ohiolink.edu/etd/view.cgi?ohiou1262099140.
Der volle Inhalt der QuelleHoendervanger, Lynn. „A New Metastable Helium Machine : An Investigation into the Attributes of Trapping, Cooling and Detecting Metastable Helium“. Thesis, Palaiseau, Institut d'optique théorique et appliquée, 2014. http://www.theses.fr/2014IOTA0006/document.
Der volle Inhalt der QuelleThis thesis describes the work done over the past three and a half years on the new metastable helium experiment at the Institut d'Optique in Palaiseau. In the first chapter it describes a study to improve both the efficiency and the accuracy of the Microchannel Plate (MCP) detection system. We have experimented with adding a gold layer on the top of the input plate, something that we have found increases the efficiency but also decreases the accuracy. The addition of a voltage between the two stacked plates has been shown to both raise the efficiency and improve the accuracy in non-coated MCPs.The second chapter is devoted to the construction of the experimental apparatus. Here the excitation of ground state helium to its metastable state is described, as well as the subsequent collimation and cooling by Zeeman slower of the resulting hot atomic beam. The slowed beam is then captured in a Magneto-Optical Trap, in which we have captured 8x108 atoms.In the third chapter an original study on three-dimensional Doppler cooling in a red-detuned molasses and in the Magneto-Optical trap is presented. The metastable helium system is unique as there is no multiple scattering of photons and there are no sub-Doppler effects. This allows for a never before seen experimental realisation of pure Doppler cooling theory. The fourth chapter describes a study on collisions in a magneto-optical trap of metastable helium. Light-induced Penning collisions are responsible for high trap losses at high intensities and at frequencies close to the transition frequency. We measure the constant rate coefficient to Ksp = 2.8 ± 0.4 x 10-7cm3/s
Franco, Adenize Aparecida. „Labirintos perdidos: ficção contemporânea em trânsito nos romances de Bernardo Carvalho e Francisco José Viegas (2000-2010)“. Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/8/8156/tde-27012014-104758/.
Der volle Inhalt der QuelleThis thesis investigates how the contemporary fiction of Portuguese language meets possibilities of resistance to the crisis of the romance that has established in the contemporaneity. The titles of the authors Bernardo Carvalho and Francisco José Viegas, registered in the beginning of the 21st century, allow examining how the fiction from the current era supplants the narrative crisis and inscribes itself as a resistance element. Based in the theories of Walter Benjamim, Theodor Adorno, Zygmunt Bauman and Andreas Huyssen about the decline of the narrative and the romance allied to questions of displacement, memory and identity we try to demonstrate that this fiction responds to a moment of crisis and transition. Thus, the fiction of the authors investigated represents not the crisis of the romance, before, it configures itself as romance of the crisis, justly for meeting in the conflicting questions (narrative transgression, spatial displacement, dilution of the memory and fluid identities) the walls for the construction of its fictional labyrinth.
Collin, Olivier L. „Development of a Novel Tandem Mass Spectrometry Technique for Forensic and Biological Applications“. View abstract, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3292877.
Der volle Inhalt der QuelleNguyen, Thien Ngoc Tran [Verfasser], und Christiane [Akademischer Betreuer] Wolz. „Establishment and evaluation of Staphylococcus aureus strains with integrative reporter-plasmids for detection of cap and agr promoter activity and establishment of a 3D collagen model / Thien Ngoc Tran Nguyen ; Betreuer: Christiane Wolz“. Tübingen : Universitätsbibliothek Tübingen, 2018. http://d-nb.info/1168904617/34.
Der volle Inhalt der QuelleZhou, Yifan, Dániel Apai, Ben W. P. Lew und Glenn Schneider. „A Physical Model-based Correction for Charge Traps in the Hubble Space Telescope’s Wide Field Camera 3 Near-IR Detector and Its Applications to Transiting Exoplanets and Brown Dwarfs“. IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/625388.
Der volle Inhalt der QuelleCannon, Ammie. „Controversial Politics, Conservative Genre: Rex Stout's Archie-Wolfe Duo and Detective Fiction's Conventional Form“. BYU ScholarsArchive, 2006. https://scholarsarchive.byu.edu/etd/469.
Der volle Inhalt der QuelleHübner, Ines [Verfasser], Stephan A. [Akademischer Betreuer] Sieber, William [Gutachter] Wuest, Cathleen [Gutachter] Zeymer und Stephan A. [Gutachter] Sieber. „Elucidating the mechanism of action of the natural product xanthocillin X & tailored cofactor traps for the in situ detection of hemithioacetal-forming pyridoxal kinases / Ines Hübner ; Gutachter: William Wuest, Cathleen Zeymer, Stephan A. Sieber ; Betreuer: Stephan A. Sieber“. München : Universitätsbibliothek der TU München, 2021. http://d-nb.info/1231434635/34.
Der volle Inhalt der QuelleGherardi, David Mark. „Studies of particle and atom manipulation using free space light beams and photonic crystal fibres“. Thesis, St Andrews, 2009. http://hdl.handle.net/10023/703.
Der volle Inhalt der QuelleGorde, Dnyaneshwar R. „System Design For Non-Destructive Detection Of Ions In A Paul Trap Mass Spectrometer“. Thesis, 2004. https://etd.iisc.ac.in/handle/2005/1208.
Der volle Inhalt der QuelleGorde, Dnyaneshwar R. „System Design For Non-Destructive Detection Of Ions In A Paul Trap Mass Spectrometer“. Thesis, 2004. http://etd.iisc.ernet.in/handle/2005/1208.
Der volle Inhalt der QuelleHE, TANG CHUEN, und 唐川禾. „Determination of Organotin in Water by Purge and Trap Gas Chromatography-Flame Ionization Detection“. Thesis, 2000. http://ndltd.ncl.edu.tw/handle/00031685326258811126.
Der volle Inhalt der Quelle國立中山大學
海洋資源學系
88
Abstract Organotin compounds have been extensively used in agriculture and industry. The utilization of tributyltin(TBT) in marine antifoul-ing paints pollutes water body significantly. Due to the high toxicity of organotins, there are increased concern for marine environments. A purge and trap system coupled to a gas chromatography(GC) equipped with a flame ionization detector(FID) was used to analyze organotin compounds in water samples. Hydride derivation of orga-notin compounds is conducted by reacting with 5 % sodium boro-hydride in acidic condition(0.03 N HCl) to give the best result. The sample solution is purged with He gas(175 ml/min) for 20 min. to insure the maximum recovery of volatile organotin hydride derivatives. Salinity of sample solution is also an important factor that affects the magnitude of detection signals. Method detection limits are 0.30, 0.15 and 0.06 ng/ml for mono-butyltin, dibutyltin and tributyltin, respectively, and their relative standard deviations are < 5 %. Recovery percentage for different concentration of tributyltin chloride recovery range is 28.9 ~ 40.2 %. Calibration graphs for three kinds of organotin species are linear in the range of 1-10 ng/ml.
Lu, Chun Chang, und 呂君章. „Detection of interface and bulk trap distribution and reliability analysis for advanced MOSFET devices“. Thesis, 2014. http://ndltd.ncl.edu.tw/handle/00712953061900505219.
Der volle Inhalt der Quelle國立清華大學
工程與系統科學系
103
As the semiconductor industry approaches the limits of traditional silicon complementary metal-oxide-semiconductor (CMOS) scaling, introduction of novel materials and innovative device structures has become necessary for the future of CMOS. High dielectric constant (high-k) material has been proposed to replace the conventional silicon dioxide as gate dielectrics of MOS devices. High mobility materials are also being considered to replace Si in the channel to achieve higher drive currents and switching speeds. Ge has particularly become of great interest as a channel material, owing to its high bulk hole and electron mobilities. However, the characteristic and extent of charge trapping in the interfacial layer between gate dielectric and silicon have been reported to affect strongly the electrical characteristics of high-k gated MOS devices. Hence, providing an accurate and quick measurement for density and distribution of interface and bulk traps is believed to be a valuable research topic. This work proposes several measurement techniques based on the principle of charge pumping (CP) and provides some discussion in depth for measurement results. A modified CP technique with dynamic drain bias and various gate pulse frequencies is proposed to characterize the distribution profiles of trap generation induced by channel-hot-carrier stress in MOSFETs with high-k gate stack. With dynamic drain biases, the drain depletion region during accumulation can be modulated. Hence, the trap distribution with respect to both dielectric depth and channel location can be characterized as well. The trap generation caused by channel-hot-carrier and constant voltage stresses is also compared. Results indicate that the generation of border trap induced by CVS is small and random distributed though whole channel, while that induced by CHC stress is large and localized around the gate-edge region inside the high-k dielectric. In another study, a stress-and-sense charge pumping (SSCP) technique is proposed to measure the stress induced interface trap (ΔNit) in real time evolution without stress interruption. Results show that the ΔNit measured by this SSCP technique is much higher than that measured by the conventional method. This difference is resulted from the recovery induced by stress interruption during the sensing measurements. The ΔNit measured by SSCP method after interruption is approximately equal to that by the conventional one. The stress induced threshold voltage shift (ΔVth) and ΔNit under varies stress frequencies and duty cycles are also measured. The ΔVth seems to depend on the total stress time of stress pulse only. The ΔNit measured by SSCP with different frequencies and duty cycles are similar. The ΔNit also depends on the total stress time of stress pulse, but not the off time during the non-stress half cycle. In the last study, the interface trap density, bulk trap density and stress induced trap generation of Ge-pMOSFETs with ZrO2 and HfON dielectrics are extracted and compared by CP technique with short transition time and various frequencies. Results show that ZrO2 device has higher interface trap density but lower bulk trap density than HfON device, which implies that ZrO2 device has inferior Ge/dielectric interface but high quality dielectric bulk. The improved reliability characteristics in ZrO2 device can be attributed to the low preexisting bulk trap density which greatly suppress charge trapping in the dielectric bulk.
Harper, Courtney. „A genomic approach to splice variant detection, primer design, and identification of gene trap sequence tags“. Diss., 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3274657.
Der volle Inhalt der QuelleSu, Tzu Hsiang, und 蘇子翔. „Detection of Interface and Border Trap Distributions and Reliability Analysis for Ge MOSFETs by Charge Pumping Technique“. Thesis, 2015. http://ndltd.ncl.edu.tw/handle/udfbt6.
Der volle Inhalt der Quelle國立清華大學
工程與系統科學系
104
As the scaling of silicon metal-oxide-semiconductor (MOSFET) approach to its limitation with the development of semiconductor industry, novel materials and innovative device structures need to be introduced in future. Ge is promising for a channel material in MOSFET, owing to its high hole and electron mobility. A high quality interface layer is necessary to improve characteristics on Ge-MOSFETs device. Hence, an accurate and quick measurement to detect interface trap density and distribution of bulk traps should be a valuable research topic. Several measurement techniques based on the charge pumping are proposed to detect trap density distributions. In the first study, interface layer with hydrogen treatment and microwave annealing Ge MOSFET devices obtain lower interface trap density and better interface layer quality than without one. The electrical characteristic have higher drive current, mobility, and lower off current, due to interface layer with hydrogen treatment can repair interface traps and microwave annealing can improve PN junction. On the other hand, hydrogen treatment can improve traps density less than depth about 0.8 nm and microwave annealing can obviously reduce traps density higher than depth about 1 nm from distribution profile of border traps density. In the second study, the interface trap density, bulk density and stress induced trap generation of Ge-pMOSFETs with ZrO2 and HfON gate dielectrics are extracted and compared by CP technique. Results show that ZrO2 device has higher interface trap density but lower bulk trap density than HfON device, which implies that ZrO2 device has inferior Ge/dielectric interface but high quality dielectric bulk. The improved reliability characteristics in ZrO2 device can be attributed to the low preexisting bulk trap density which suppresses charge trapping in the dielectric bulk. In the last study, charge pumping technique is used to detect interface and bulk trap distribution and stress induced trap generation of Ge-pMOSFETs with and without Hf buffer layer (HBL). The charge pumping technique confirm that device with HBL has lower interface and bulk traps density than device without, which show electrical characteristic can be improved. Results show that device with HBL has better performance from NBTI and PBTI reliability analysis because of it has higher quality of interface characteristics and dielectric bulk.
Lin, Wei-Ting, und 林威廷. „A Study on The Detection and Recognition of Wild-Animals in Camera-Trap Images with Deep Learning“. Thesis, 2019. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107NCHU5394033%22.&searchmode=basic.
Der volle Inhalt der Quelle國立中興大學
資訊科學與工程學系所
107
In recent years, more and more biologists and natural scientists have set up camera traps in the wild to collect wild animal images in large volume. In the way of using camera-trap to collect wildlife images, people do not need to wait for a long time in a fixed place until animals appear. However, in order to analyze these images and videos collected by camera-trap, and if this work is processed manually, it may require a lot of time and money. In addition, the speed of collecting wildlife images and videos is so fast that the biologists can’t effectively use the collected data. With the development of deep learning in computer vision in recent years, in this paper we propose a deep learning and image processing techniques to detect and identify animals in the wild, aiming to establish an automatic detection system for wild animals. In the wild, animals are often covered by some grass or branches, which makes it impossible to identify with the deep learning method. Therefore, in the wildlife recognition system, we combined the traditional image processing method. We use the hierarchical median filter to build the background model, and background subtraction technique to obtain animals which are covered by grass or branches. After getting the animals, we will use the VGG16 and darknet53 classifiers to classify them. The images and videos used in this study were provided by the professor Chen of the Department of Forest, National Chung Hsing University. Experimental results show that the animals covered by some grass or branches can still be identified successfully. It demonstrates the effectiveness of the proposed method.
Graichen, Adam. „Enhanced detection strategies accomplished through metal binding and miniature mass spectrometry“. 2013. https://scholarworks.umass.edu/dissertations/AAI3556252.
Der volle Inhalt der QuelleLiang, Shao-Yu, und 梁少瑜. „Measuring masses of single bacterial whole cells with laser induced acoustic desorption plasma charge detection quadrupole ion trap mass spectrometer“. Thesis, 2016. http://ndltd.ncl.edu.tw/handle/54633426705005600119.
Der volle Inhalt der Quelle國立東華大學
物理學系
104
The mass measurement of bio-particles with sizes from 50 nm to 3 um is still challenging in mass spectrometric field. In our previous study, we found charge detection quadrupole ion trap mass spectrometer (CD-QIT MS) could measure the mass and mass distribution of cells larger than 3 um with laser induced acoustic desorption (LIAD) method. Here we develop a new LIAD plasma (LIADP) with Ar mix methane gas as ion source to allow ionization of intact bacteria containing several thousands of charge number. We also compare different result by changing experiment condition of Quadrupole Ion Trap (QIT). The individual mass, charge, and mass distribution of polystyrene particles from 2 um to 0.3 um are measured for mass calibration. Escherichia coli and Staphylococcus aureus cells are measured and the average charge is about 1300.
Han, Chou-Hsun, und 韓宙勳. „Measuring intact mass and mass distribution of bacteria particles with a laser induced plasma charge detection quadrupole ion trap mass spectrometer“. Thesis, 2015. http://ndltd.ncl.edu.tw/handle/81897330369045454107.
Der volle Inhalt der Quelle國立東華大學
物理學系
104
The sizes of large biomolecules and bioparticles are in the range from 1 nm to 100 m. These large biomolecules and bioparticles include protein complexes, viruses, bacteria and cells. So far the highest mass that a quadrupole time-of-flight mass spectrometer can measure is HK97 capsids with mass of 18 MDa (size ~50 nm) and charge of 350 using the electrospray ion source (ESI)[1]. For sizes greater than 3 m, a charge detection quadrupole ion trap mass spectrometer (CD-QIT MS) can measure the mass and mass distribution of cells with laser induced acoustic desorption (LIAD) ion source[2]. But measurement of the sizes from 50 nm to 3 m is still very challenging for mass spectrometric scientists. Although mass of single bacteria and viruses can be measured with a quadrupole ion trap by light scattering method from sizes 80 nm to several m, but the measuring speed is too slow to be widely used for practical consideration.[3] Here, we propose for the first time a laser-induced plasma (LIP) ion source to enhance the charges of bacteria particles up to few thousands. With LIP ion source, the intact mass of bacteria and their mass distribution can be measured with CD-QIT MS. Several bacteria were measured including Staphylococcus aureus, Escherichia coli and the measured mass and mass distribution is in consistent with their size distribution measured by the optical microscope method. The charge number is enhanced about one order of magnitude as compared to LIAD method