A Multiple Case Study of Co-Teachers’ Technology Integration Knowledge: How It Is Held, Built, and Shared

This multiple case study explored how secondary-level co-teachers hold, build, and share knowledge related to technology integration. Co-teaching, a special education service delivery model, involves a general and special educator who share responsibility for planning, delivering, and assessing instruction (Friend, 2014). Through the lens of the Technological Pedagogical Content Knowledge (TPACK) framework (Mishra & Koehler, 2006), I explored the perspectives and experiences of four co-teaching pairs who regularly integrated technology into instruction. Study results suggested that these teachers held knowledge, beliefs, and values that influenced their classroom practices. The micro-level contextual elements in the teachers’ workplaces, along with meso-levels supports, influenced how the teachers built and shared knowledge with and from each other. their collaborative relationships, which were based upon parity, respect, and communication, supported a professional work environment of sharing and learning. as these teachers engaged in dialogue within their teaching and learning partnerships, individually-held knowledge (TPACK) was distributed between the co-teachers. Content-, grade-, and school-level collaborations addressing technology integration also resulted in the distribution of TPACK school-wide. Implications of these results include recommendations for how school leaders may support effective co-teaching, which can enhance teachers’ professional learning related to technology integration and encourage the development of distributed knowledge

The largest white light flare ever observed: 25 April 1984, 0001 UT

The X13/3B flare of 25 April 1984, 0001 UT, was accompanied by intense white light emission that reached a peak power output approx 2x10 to the 29 erg/sec in the optical/near UV continuum; the total energy radiated in the continuum alone reached 10 to the 32 power ergs. This was the most powerful white light flare yet recorded, exceeding the peak output of the largest previously known event by more than one order of magnitude. The flare was a two-ribbon type with intense embedded kernels as observed in both Balmer-alpha line and Balmer continuum, and each of these flare ribbons covered separate umbrae shortly after the maximum of the event. The onset and peak of the white light emission coincided with the onset and peak of the associated E greater than 100 KeV hard X-ray burst, while the 1-8 angstrom soft X-ray emission reached its maximum 4 minutes after the peak in white light

Postcard: Hand Written Message Requesting an Agriculture Report

This black and white printed postcard contains correspondence from a man seeking information from another man. Handwriting is on the front and back of the card.https://scholars.fhsu.edu/tj_postcards/2169/thumbnail.jp

Learning, Identifying, Sharing

This article argues that a cooperatively-built, well-organized, shared knowledge base is a new – and, from certain viewpoints, optimal – kind of support (refining and integrating other kinds of supports) for three complementary tasks: learning about living entities (and how to identify them), supporting their identification, and sharing knowledge about them. This article gives the ideas behind our prototype, and argues that knowledge providers can be not solely specialists, but also amateurs. In essence, for these three tasks, it argues for the (re-)use of much more semantically organized and interconnected versions of semantic wikis or scratchpads

Counting linear extensions of posets with determinants of hook lengths

We introduce a class of posets, which includes both ribbon posets (skew shapes) and $d$-complete posets, such that their number of linear extensions is given by a determinant of a matrix whose entries are products of hook lengths. We also give $q$-analogues of this determinantal formula in terms of the major index and inversion statistics. As applications, we give families of tree posets whose numbers of linear extensions are given by generalizations of Euler numbers, we draw relations to Naruse-Okada's positive formulas for the number of linear extensions of skew $d$-complete posets, and we give polynomiality results analogous to those of descent polynomials by Diaz-L\'opez, Harris, Insko, Omar, and Sagan

Generalized Integral Operators and Schwartz Kernel Theorem

In connection with the classical Schwartz kernel theorem, we show that in the framework of Colombeau generalized functions a large class of linear mappings admit integral kernels. To do this, we need to introduce news spaces of generalized functions with slow growth and the corresponding adapted linear mappings. Finally, we show that in some sense Schwartz' result is contained in our main theorem.Comment: 18 page

Packaging of a high-speed optical modulator using flip chip interconnects

Optical modulators using lithium niobate (LiNbO3) have become the industry standard for high-speed data transmission and RF photonic links. Packaging is a determining factor in maintaining low cost and high-performance. This paper investigates the application of flip chip technology to optical modulator packaging. Experimental results show that rugged flip chip bonds can be realized with minimal impact on the modulator electrical performance

Charge Exchange in Low-Energy H, D + C4+ Collisions with Full Account of Electron Translation

We report the application of the quantum approach, which takes full account of electron translation at low collisional energies, to the charge exchange process H, D + C4+ → H+, D+ + C3+(3s; 3p; 3d). The partial and the total integral cross sections of the process are calculated in the energy range from 1 till 60 eV/amu. It is shown that the present results are independent from the upper integration limit for numerical solution of the coupled channel equations although nonadiabatic couplings remain nonzero up to infinity. The calculated partial and total cross sections are in agreement with the previous low-energy calculations and the available experimental data. It is shown that for low collisional energies the isotopic effect takes place. The observed effect is explained in terms of the nonadiabatic dynamics.National Science FoundationVolkswagenstiftungFonds National de la Recherche Scientifique de Belgiqu

On the Geroch-Traschen class of metrics

We compare two approaches to semi-Riemannian metrics of low regularity. The maximally 'reasonable' distributional setting of Geroch and Traschen is shown to be consistently contained in the more general setting of nonlinear distributional geometry in the sense of Colombea