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 59 for “"CSCL"”.
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Communication structures in computer-supported cooperative learning (CSCL) environments for adult learners in distance education
… by computer-supported cooperative learning (CSCL) environments for adult learners in constructivist distance education? The target audience was adult learners; the constructivist learning paradigm guided the analysis of the teaching/learning interactions and communication events. A course was …
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Interface engineering and multi-modal characterization of co-evaporated metal halide perovskite films for efficient perovskite-silicon tandem solar cells
… investigate the impact of PbI2, PbCl2, CsI and CsCl seed layers on the morphology, composition, and optoelectronic properties of co-evaporated FA0.8Cs0.2PbI2.7Br0.3 films. While all seed layers reduce band gap variability compared to reference samples, CsCl and CsI promote organic precursor …
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Social Metacognition in Computer Supported Collaborative Learning Environments: A Comparison in an Online and Face-To-Face Information Literacy Course
… Computer-supported collaborative learning (CSCL) seems especially promising in allowing students to work together in ways that they have not been able to before, both face-to-face and online. Instructors use CSCL to engage students and to increase learning. CSCL requires that students …
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Immobilization of radioactive materials in iron phosphate glass
… (Hanford tank sludges), the presence of halides (CsCl and SrF<sub>2</sub> capsules), or large amounts of uranium (SNF).</p> <p>Between 20 and 60 wt% Hanford tank sludge was vitrified with an iron phosphate glass at ≤ 1200°C in 1 hour. The chemical durability of iron phosphate glassy wasteforms was …
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Culturally-Integrative Encoding: A Human-Computer Interaction Approach to Cultural Learning Interfaces
… and computer-supported collaborative learning (CSCL) to create an approach broadly accessible to creators and human-computer interaction (HCI) researchers. My novel approach emphasizes how CSCL principles can be applied to leverage capabilities of social informal learning spaces; I also embed …
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Adenovirus-based exogenous gene expression in mammalian cells
… ethidium bromide (EtBr) , cesium chloride (CsCl), EtBr/CsCl, endotoxins and ethanol. CsCl, EtBr/CsCl and endotoxins affected the delivery process while EtBr affected the expression process but not the delivery. The used EtOH had no significant effect on both. In addition, the effect of all …
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Knowledge construction, social identity and social network structure in completely online groups
… in computer supported collaborative learning (CSCL) environments. This mixed methods study examines the development of eight completely online groups in a CSCL course held at the University of Missouri during the summer of 2008. The principal contribution of this work is a new and deeper …
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Supporting Productive Collaborative Discourse In Social Annotation Through Pedagogical, Technological, And Analytical Innovations In Higher Education
… in computer-supported collaborative learning (CSCL) environments is a multifaceted endeavor that encompasses more than just students talking to each other. Rather, it involves interactions aimed at fostering various knowledge practices, presenting challenges such as promoting student …
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A spectroscopic and electrochemical study of chlorotitanates in molten salt media
… of titanium in a bath consisting of the CsCl-NaCl-KCl eutectic as the solvent. Interfacial phenomena (multiple reaction steps and the kinetics associated with each) related to the faradaic process were investigated with electroanalytical techniques. The bulk chemistry of the electrolyte …
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Molecular systematics and population genetics of Hypoxylon truncatum sensu Miller using RAPD
… followed by precipitation of contaminants using CsCl. Using DNA isolated by this method, the effects of several parameters on PCR amplification were investigated. These parameters included different concentrations of DNA, MgCl$\sb2,$ dNTP, gelatin, primer, and Taq polymerase, different …
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Nanoporous glass-ceramics transparent in infrared range to be used as optical sensor-Mechanical and viscoelastic properties of the TAS (Te-As-Se) glass
GeS₂-Sb₂S₃-CsCl glass-ceramics with nanoporous surfaces were synthesized and tested as optical elements. The nanoporosity is obtained through a two-step process, including controlled nucleation of CsCl nuclei in the glass matrix followed by selective etching of the nuclei with an acid solution. The …
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Building Metal-Anion Layers within a Preovskite Host
… this environment is similar to cesium in the CsCl structure. Thermal analysis indicates that these are low-temperature phases where decomposition begins below 200°C. Details on the synthesis and characterization of this set of compounds are presented and the general utility of this approach …
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Iron-gallium alloys : temperature and field effects on [lambda]100 and magnetic anisotropy measurements
… Quenching to retain [alpha]-iron and B2 (CsCl) phases was found to increase magnetostriction, with the B2 structure creating the largest magnetostriction. The reasons for the atypical temperature dependence and the B2 structure enhancing magnetostriction are still unexplained. K anisotropy …
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ΑΠΟΜΟΝΩΣΗ ΠΥΡΗΝΙΚΟΥ RNP-ΣΥΜΠΛΕΓΜΑΤΟΣ ΑΠΟ ΗΠΑΤΙΚΟ ΙΣΤΟ ΑΡΟΥΡΑΙΟΥ. ΜΟΡΦΟΛΟΓΙΚΗ-ΒΙΟΧΗΜΙΚΗ ΚΑΙ ΑΝΟΣΟΛΟΓΙΚΗ ΜΕΛΕΤΗ
… (U1, U2, U4, U5, U6). ΣΕ ΙΣΟΠΥΚΝΙΚΗ ΚΛΙΣΗ, CSCL ΕΜΦΑΝΙΖΟΥΝ ΠΥΚΝΟΤΗΤΑ Ρ=1,3650. ΤΑ ΒΙΒΛΙΟΓΡΑΦΙΚΑ ΔΕΔΟΜΕΝΑ ΚΑΙ ΤΑ ΠΙΟ ΠΑΝΩ ΧΑΡΑΚΤΗΡΙΣΤΙΚΑ ΠΑΡΕΧΟΥΝ ΑΡΚΕΤΕΣ ΕΝΔΕΙΞΕΙΣ ΓΙΑ ΤΗ ΣΧΕΣΗ ΤΩΝ ΔΟΜΩΝ ΤΟΥ ΣΥΜΠΛΕΓΜΑΤΟΣ ΜΕ ΤΑ ΕΝΔΟΧΡΩΜΑΤΙΝΙΚΑ ΚΟΚΚΙΑ ΤΟΥ ΠΥΡΗΝΑ. ΠΑΡΑΠΕΡΑ ΔΙΕΡΕΥΝΗΣΗ ΤΗΣ ΠΙΟ ΠΑΝΩ ΣΧΕΣΗΣ ΕΓΙΝΕ ΜΕ …
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Molecular Dynamics Studies of the Response of Symmetric Tilt Grain Boundaries to Deformation in Rocksalt Structured, Ionically Bonded Ceramics
… a thin amorphous interphase in the NaCl-CsCl system, and the mechanisms for formation of the amorphous phase are examined in detail. The results point to novel mechanisms active during deformation in these materials, such as: (i) formation of previously unknown hexagonal polymorphs of …
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Electrochemical engineering considerations for gas evolution in molten sulfide electrolytes
… KOH and chlorine evolution in eutectic LiCl-KCl-CsCl. For the first time, values are reported for the saturation concentration of dissolved sulfur gas, an approximate range of Schmidt number for dissolved sulfur, and natural convection limiting current densities in a molten sulfide electrolyte …
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System Design Framework for a Learning Collaboratory
… and computer-supported collaborative learning (CSCL). LUCIDIFY is instantiated in an actual software testbed, the Collaborative Learning Environment for Operational Systems (CLEOS). CLEOS is a collaboratory for teachers, students, and practitioners in the physical sciences, and in particular for …
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The structural environments of cations adsorbed onto clays: A cesium-133 MAS NMR spectroscopic study
… spectra for slurries of hectorite in CsCl solutions yield two peaks, one due to Cs in solution, and the other due to Cs motionally-averaged on the clay. Below ${\sim}{-}60\sp\circ$C, motional averaging of the adsorbed Cs slows sufficiently to allow resolution of two peaks representing …
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Biochemical Studies of the Purine Analogues, 2-Aminopurine and 2,6 Diaminopurine
… of dAT. Also, the buoyant density of dDAP-T in CsCl differs appreciably (ρ = 1.718) from that of dAT (ρ = 1.679). The antibiotic actinomycin has been shown to inhibit RNA polymerase by binding to helical DNA. The specificity of this interaction is thought to be determined by the 2-amino group of …
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