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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 2881 for “"Carrier"”.
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Channel Estimation in Single -Carrier and Multi-Carrier Communication Systems
… technology such as turbo receivers and multi-carrier communication systems, which have influenced recent standards, e.g., IEEE 802.11 and IEEE 802.16. Regardless of the communication systems, channel state information is required for reliable demodulation, and different structures pose …
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The Bit Error Rate (BER) Performance in Multi-Carrier (OFDM) and Single-Carrier
… subscribers' usage.</p> <p>The OFDM, as a multi-carrier, is more complex than the single-carrier transmission scheme. However, the OFDM technique maintains better performance for high data rate in terms of bit error rate (BER). In this thesis a comparison has been presented between the …
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Plasmonic hot carrier-driven electrochemistry
… understanding of how plasmon-induced hot-carriers drive chemical reactions is needed. This work examines how different hot carrier distributions affect electrochemical reactions of plasmonic nanoparticles, and how applied electrochemical potentials can be used to modify the reactivity of …
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Carrier Dynamics in Perovskite Nanocrystals
… for high-efficiency solar cells. Ultrafast carrier-phonon interactions in semiconductors represent a major loss of the excess energy of photoexcitations above the bandgap. We demonstrate approaches to suppress the relaxation process, which may allow the full photon energy to be usefully …
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Femtosecond carrier dynamics in AlGaAs
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1994.
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Manipulation of carrier particles for inhalation
… relative performance of these materials as drug carriers in a dry powder inhaler (OPI). The main aim of the research was to establish whether a relationship exists between the surface characteristics of a material and the performance of the material as a drug carrier in a OP!. A fundamental part …
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The thiourea carrier in human erythrocytes
… to determine the characteristics of the thiourea carrier in human erythrocytes taking into consideration the two parameters of transfer (half-saturation constant and maximum transport rate) and the energy of dissociation of the carrier complex. In the president experiment, the problem has been …
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Carrier detection in Duchenne muscular dystrophy
The identification of apparently healthy carriers of the lethal, X- linked gene for Duchenne muscular dystrophy (DMD) is of importance for genetic counselling purposes. At present the accepted most reliable test for determining DMD carrier status is the estimation of serum creatine kinase activity. …
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Carrier relaxation in doped quantum wells
… separately. In addition, the above theory of carrier relaxation is applied to quantum well lasers. The gain saturation coefficient, c:, of InxGat-xAs/ Alo.2Gao.8As strained layer quantum well lasers (SL-QWLs) is calculated as a function of strain from carrier intrasubband relaxation times. The …
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In defense of wireless carrier sense
Carrier sense, or clear channel assessment (CCA), is widely used in wireless medium access control (MAC) protocols as the means to arbitrate access and regulate concurrency, striking a balance between interference protection and spatial reuse. Criticized widely in the literature, carrier sense has …
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Exchange mechanisms for shipper-carrier negotiations
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2001.
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(The) house fly a carrier of disease.
Thesis (M.A.)--Boston University This item was digitized by the Internet Archive.
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Carrier manipulation in graphene/ferroelectric hybrid structures
… any coupling between the graphene charge carriers and the ferroelectric polarization. The experimental methods utilized to overcome these challenges are introduced for device fabrication and characterization. The resulting graphene/PbZr0.2Ti0.8O3 hybrid structures presented here exhibit …
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Charge carrier transport in amorphous organic semiconductors
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.
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Carrier strategies in the spot trucking market
… we identified four parameters available to a carrier when a load is presented: length of haul, revenue per mile (RPM), the probability of finding an onward load from the destination, and the required mileage to reposition to the shipment origin. We also identified preferences of the …
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Charge-carrier transport in amorphous organic semiconductors
… small bandwidth leads to localization of charge carriers and electron-hole pairs, called excitons. Thus, the charge-carrier mobility in organic semiconductors is generally much smaller than in their covalently-bonded, highly-ordered crystalline semiconductor counterparts. Indeed, one major …
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