Global ETD Search
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 98 for “"triplets"”.
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Coping Processes Used by Mothers of Triplets
… describe the coping processes used by mothers of triplets. Using a descriptive design, interpersonal comparisons of 92 mothers of triplets attending a national meeting of families of higher order multiples were made. Variables, in addition to sociodemographic characteristics, included coping …
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Parent descriptions of the active play behaviours of their twins and triplets with autism
… are not well understood. Research with twins and triplets with autism offers a unique opportunity to explore the active play behaviours of children with autism because children within a twin or triplet sibling group share many similarities (age, access to toys, etc.) enabling the researcher to …
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Un nouveau montage à phase stable pour la génération de triplets de photons intriqués en polarisation par fluorescence paramétrique en cascade
… Récemment, une nouvelle méthode de production de triplets a été développée : une cascade de fluorescence paramétrique. À ce jour, les montages de cascade de fluorescence paramétrique ont requis un schéma de stabilisation active, limitant leurs utilités. Ce travail présente un nouveau montage pour …
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Classroom Placement of Twins Triplets and Other Multiples in Grades Kindergarten Through Eight in East Tennessee Schools: East Tennessee Principals Perceptions.
<p>The purpose of this study was to learn from kindergarten- through 8th-grade principals in East Tennessee (a) what policies guide their decisions regarding classroom placement for multiple-birth children; (b) what postsecondary training they have; (c) what sources guide their decisions; (d) what …
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On the Theory of Quaternions
Ordered triplets serve to describe space geometrically just as ordered pairs serve to describe the plane. A multiplication can be defined on pairs consistent with the complex numbers. However, as this paper will show, one cannot define a multiplication on triplets which is consistent with the …
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Modeling spatial patterns of mixed-species Appalachian forests with Gibbs point processes
… models for 2nd-order potentials and three triplets processes with models for 2nd- and 3rd-order potentials applied to a mixed-species hardwood forest in the Southern Appalachian Mountains of western North Carolina. Although the 2nd-order potentials of both the pairwise interaction and …
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Neural correlates of temporal context retrieval
… memory). We used three word familiar phrases (triplets) as stimuli. In study phase, three words were presented quickly one after another in either familiar or scrambled order. Participants were instructed to read aloud each word and try to remember the order of the words. Then they were tested …
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Applications en information quantique de la fluorescence paramétrique en cascade
… méthode est insuffisante. Alors pour créer des triplets de photons intriqués, nous allons avoir besoin de recourir à d’autres méthodes. Une méthode bien connue consiste à faire interférer deux paires de photons intriqués à l’aide d’un réseau de plusieurs séparateurs de faisceaux et de …
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Parallelism in the Hodayot from Qumran
… given to basic units of composition (couplets, triplets, quatrains, etc.), grammatical parallelism, semantic parallelism, and the relationship between these last two. A topic of secondary importance is the length of poetic lines. After a few paragraphs on the purpose, importance, and overview of …
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Optimization Techniques for Phase Retrieval Based on Single-Crystal X-Ray Diffraction Data
… an integer minimal principle for quartets and triplets is proposed for initially setting the phases of structure factors that compose a Karle-Hauptman matrix. Initialization in this manner is motivated by a proof of the relation between invariants and the Karle-Hauptman matrix determinant …
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The Design and Development of Artificial Zinc Finger Transcription Factors and Zinc Finger Nucleases to the hTERT Locus
… spacer lengths, extra basepairs in-between triplets, and the inclusion of non-GNN triplets. To explore these types of target sites, we created ZFN variants that contained different inter-domain linkers, lengthened inter-finger linkers, and DNA binding domains created through hybridizing the …
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Picosecond studies of free radical reactions in solution
… shows that these carbenes are ground-state triplets. These carbenes react with methanol to form 9-methoxy ethers. The absence of a heavy atom effect in this reaction suggests that intersystem crossing is not involved in the rate-determining step, and that diaryl carbenes react with methanol …
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Administration of arginine does not alter material circulating concentration of C-type natriuretic peptide in pregnant sheep: A thesis submitted in partial fulfilment of the requirements for the Degree of Bachelor of Science with Honours
… plasma CNP concentration in ewes pregnant with triplets, but have no effect on singleton pregnancies. To test this, pregnant ewes carrying singles or triplets (about day 100 of gestation) received an i.v. bolus injection of either saline solution (control, n = 6) or arginine solution (treatment, …
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Singlet fission photovoltaics
… the nearly 100% conversion of a singlet into two triplets. By employing an exciton blocking layer and a light trapping scheme to the solar cell, we demonstrate the peak external quantum efficiency exceeding 100% in the visible spectrum. It is the first time that any solar cell has generated more …
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Synthesis and Optical Characterisation of Diphenylhexatriene Derived Intramolecular Singlet Fission Materials
… This requires that the energy of both SF-born triplets can be harvested independently and transferred to the semiconductor. In covalently connected assemblies of a singlet fission active chromophore, intramolecular singlet fission (iSF) can generate two triplet states upon a single molecule. …
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Interfacial engineering and spectroscopy of spin-triplet excitons for singlet fission sensitization of silicon solar cells
… properties of triplet excitons, resulting in triplets having vanishingly low ability to emit light, low mobility and small diffusion lengths, and requiring very close spacing with other materials to undergo energy transfer. This latter require- ment may be especially limiting for silicon, an …
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Deep Assertion discovery using word embeddings
… plain text. The result of these techniques is triplets containing two argument phrases from the input text and a relation between these arguments which are a trade-off between relevance and completeness. These existing IE frameworks are unable to deal with big data. In this thesis, we propose …
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Singlet Fission in Pechmann Dyes and Molecular Oligomers
… the challenge of decoupling singlet fission triplets by employing methods to improve their lifetimes. Utilizing DPH molecular dimers and TIPS trimers dispersed in polystyrene matrices at varying concentrations, we explore how to manipulate intermolecular triplet hopping, providing insights …
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Structural and Spectroscopic Models of the [iron-Iron]-Hydrogenase Enzyme
… for [1(CO)4(PMe3)]+ featured a doublet of triplets, coupled to three phosphorus nuclei with two distinct phosphorus hyperfine couplings (A(31P) = 283, 32 and 34 MHz). Based upon the changes in the EPR, upon binding CO the unpaired spin becomes delocalized over both iron centers resulting in …
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A large strain piezoelectric microactuator by folding assembly
… present in prior designs. Fabricated actuator triplets demonstrated peak unblocked displacement of 15 [mu]m, 3% total contraction by length, with an estimated blocking force of [approx.] -9.2 [mu]N. Methods of arraying one such cell massively in series and in parallel are also presented, with …
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