5,964 research outputs found
PiLa-CS Professional Learning Community - Workshop 2 Resources
No full textDuring the Summer of 2021 and 2022, the Participating in Literacies and Computer Science (PiLa-CS) Research Practice Partnership convened and supported a community of practice to learn more about how to enable better CS teaching for emergent bilinguals. These are materials from Workshop 2 of the PLC.Sponsored by the National Science Foundation under NSF grant CNS-1738645 and DRL-1837446. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation
Translanguaging Pedagogy in CS Ed
No full textEpisode 3: Translanguaging pedagogy in CS Education
This video looks at how multilingual students already use translanguaging in their computer science classes and discusses how CS educators can further support them with translanguaging pedagogy, a framework that prompts teachers to consider their stance, design, and shifts.
Featuring team members from Participating in Literacies and Computer Science (PiLa-CS), https://www.pila-cs.orgEpisode 3: Translanguaging pedagogy in CS Education
This video looks at how multilingual students already use translanguaging in their computer science classes and discusses how CS educators can further support them with translanguaging pedagogy, a framework that prompts teachers to consider their stance, design, and shifts.
Featuring team members from Participating in Literacies and Computer Science (PiLa-CS), https://www.pila-cs.orgSponsored by the National Science Foundation under NSF grant CNS-1738645 and DRL-1837446. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation
PiLa-CS Professional Learning Community - Design Journal Template
No full textDuring the Summer of 2021 and 2022, the Participating in Literacies and Computer Science (PiLa-CS) Research Practice Partnership convened and supported a community of practice to learn more about how to enable better CS teaching for emergent bilinguals. These are materials from from the PLC for a Design Journal to act as a planing template for teachers.Sponsored by the National Science Foundation under NSF grant CNS-1738645 and DRL-1837446. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation
SFMM design in colocated CS-MIMO radar for jamming and interference joint suppression
No full textThis study focuses on the problem of joint suppression of active jamming in target sector-of-interest (SOI) and out-ofsector interference for colocated compressive sensing multiple-input-multiple-output (CS-MIMO) radar. Three effective strategies for spatial filter measurement matrix (SFMM) design are outlined. Unlike the previous reported Capon beamformer and minimum variance distortionless response beamformer, the proposed design strategies only depend on the target spatial SOI rather than the accurate directions-of-arrival (DOAs) of targets, jammers and interfering sources to obtain deep nulls or notches for the SOI jamming and low-attenuation levels for the out-of-sector interference. The SFMM design criteria are derived using the second-order cone programming and solved as convex optimisation problems. The proposed approaches can simultaneously suppress the SOI jamming and attenuate the out-of-sector interference. Meanwhile, better DOA estimation accuracy can be achieved. Simulation results demonstrate the superiority of the proposed approaches over the other methods for colocated CS-MIMO radar
Enhanced CO<sub>2</sub> Adsorption and CO<sub>2</sub>/N<sub>2</sub>/CH<sub>4</sub> Selectivity of Novel Carbon Composites CPDA@A-Cs
No full textNew
carbon composites (CPDA@A-Cs) were successfully prepared by
carbonizing and activating the polydopamine (CPDA) and asphalt-based
carbons (A-Cs) for CO2 capture and separation. The resulting
CPDA@A-Cs were characterized, and the CO2, N2, and CH4 adsorption separation performances of CPDA@A-Cs
were investigated systematically. Results showed that CPDA@A-Cs exhibit
a high Brunauer–Emmett–Teller specific surface area
of 2031 m2/g and a high total pore volume of 0.81 cm3/g, respectively. Boehm titration showed that the introduction
of CPDA made the basic site concentration of CPDA@A-Cs increase in
comparison with that of the parent A-C, and X-ray photoelectron spectroscopy
analysis indicated that the N-containing groups mainly consisted of
pyridinic N and pyridonic N. At the ambient pressure, the CO2 uptakes of CPDA@A-Cs amounted up to 6.89 mmol/g at 273 K and 4.05
mmol/g at 298 K, increasing by 34% compared with the parent A-C, and
much higher than that of the most reported carbonaceous materials
under the same adsorption conditions. Meanwhile, the CO2/N2 and CO2/CH4 adsorptive separation
selectivities were significantly enhanced. For the CO2/N2 (0.15/0.85) mixture, its ideal adsorbed solution theory (IAST)-predicted
selectivity at normal pressure and temperature was found to be 25.1,
whereas for the CO2/CH4 (0.5/0.5) mixture, its
IAST-predicted selectivity under the same conditions was calculated
to be 5.1. Fixed-bed experiments showed that the CO2/N2 mixture and CO2/CH4 mixture can be
well separated at room temperature. Density functional theory calculations
revealed that surface pyridinic N and pyridonic N of the composites
make a significant contribution to the enhanced CO2 capture
capacity and CO2/N2 or CO2/CH4 selectivity
Arizona Then and Now: Exploring Arizona's Five Cs Through Photography
No full textabstract: Arizona Then and Now: Exploring Arizona's Five Cs Through Photography is a photographic exploration of the evolution of Arizona's five Cs: cotton, copper, citrus, cattle, and climate. This project first looks to the past to see how these five elements shaped the state of Arizona. Photographs were taken across the valley of these elements, or lack thereof, discovering what Arizona has transformed into in the process. Each chapter of the book begins with a brief history of the element focused on in that chapter, followed by an analytical thought about the photographs taken and how the element has evolved. Each chapter shows two historical photographs followed by a series of photographs taken during the project that the author thought depicted what is seen today. The book ends on a final positive note about how the five Cs are not dead, but soon could be completely taken over. This project was a way for a non-art major to explore the state that she grew up while also challenging herself by more than just taking pictures. The photographs displayed in the book depict a sampling of what the author saw that is left of the five Cs
IR-improved DGLAP-CS QCD parton showers in Pythia8
No full textAbstractWe introduce the recently developed IR-improved DGLAP-CS theory into the showers in Pythia8, as this Monte Carlo event generator is in wide use at LHC. We show that, just as it was true in the IR-improved shower Monte Carlo Herwiri, which realizes the IR-improved DGLAP-CS theory in the Herwig6.5 environment, the soft limit in processes such as single heavy gauge boson production is now more physical in the IR-improved DGLAP-CS theory version of Pythia8. This opens the way to one’s getting a comparison between the actual detector simulations for some of the LHC experiments between IR-improved and unimproved showers as Pythia8 is used in detector simulations at LHC whereas Herwig6.5, the environment of the only other IR-improved DGLAP-CS QCD MC in the literature, Herwiri1.031, is not any longer so used. Our achieving the availability of the IR-improved DGLAP-CS Pythia8 then is an important step in the further development of the LHC precision theory program under development by the author and his collaborators
[[alternative]]Interferometer study of CO & CS in comet Hale-Bopp (C/1995 O1)
No full text[[abstract]]摘要
我們使用BIMA (Berkeley-Illinois-Maryland Association) 毫米波干涉儀陣列觀測海爾-包普彗星。研究結果顯示CO和CS氣體分子之分布呈現的刺狀結構，其成因可能來自於彗核之氣體或塵埃噴流；交叉相關所得之CO及CS光譜呈現不對稱形狀，藍移端譜線顯著增強，應是彗核面對太陽方向之氣體產生率較高之故。比較Haser模式與觀測結果，驗證了理論預測的CO尺度長度，並且證實CO氣體分子主要是自彗核直接昇華而來，但是仍有少部分CO分子是來自彗髮中的冰塵顆粒。直接來自彗核的CO分子豐度，可反映出太陽系形成初始之含量。經觀測得到CO分子的柱密度為2.31 × 10^16 cm^-2，CS分子為2.32 ×10^14 cm^-2。使用Haser模式求得CO的氣體產生率為1.49 ×10^30 s^-1，CS的產生率約為1.91 ×10^28 s^-1。比較海爾-包普彗星、其他彗星的CO/H2O豐度比，發現長週期彗星和哈雷家族彗星CO/H2O豐度比顯著的較木星家族彗星的值來的多；海爾-包普彗星CO/H2O豐度比與恆星形成區中星際冰塵顆粒的豐度值相當，卻顯著的比巨大分子雲中熱分子雲核氣相分子少，顯示海爾-包普彗星極可能是在含有大量星際冰粒和塵埃的太陽星雲塌陷過程中形成，而不是來自星際雲氣的凝結。
What CS Ed Can Offer Bi/Multilinguals
No full textEpisode 4: What can CS offer multilingual learners?
This video discusses how computer science education can benefit multilingual learners. You will meet a middle school ENL (English as a New Language) teacher who successfully incorporated both translanguaging pedagogy and CS education into her classroom, leading to a memorable experience for one of her students.
Featuring team members from Participating in Literacies and Computer Science (PiLa-CS), https://www.pila-cs.orgEpisode 4: What can CS offer multilingual learners?
This video discusses how computer science education can benefit multilingual learners. You will meet a middle school ENL (English as a New Language) teacher who successfully incorporated both translanguaging pedagogy and CS education into her classroom, leading to a memorable experience for one of her students.
Featuring team members from Participating in Literacies and Computer Science (PiLa-CS), https://www.pila-cs.orgSponsored by the National Science Foundation under NSF grant CNS-1738645 and DRL-1837446. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation
Microporous cesium salts of tetravalent Keggin-type polyoxotungstates Cs-4[SiW12O40], Cs-4[PW11O39(Sn-n-C4H9)], and Cs-4[PW11O39(Sn-OH)] and their adsorption properties
No full textMicroporous cesium salts of modified and unmodified tetravalent Keggin-type polyoxometalates, including Cs-4[SiW12O40], Cs-4[PW11O39(Sn-n-C4H9)], and Cs-4[PW11O39(Sn-OH)], were synthesized. The crystalline structures, which had body-centered cubic (bcc) arrangements, the lattice constants, and the pore-size distributions of the three Cs salts were similar, regardless of the presence or absence and types of functional groups introduced. The Cs salts had only micropores and no mesopores. The micropore size distributions were determined from adsorption isotherms of Ar, which showed a sharp peak at 0.59 nm and a shoulder at 0.62 nm. The fractions of the external surface areas to the total surface areas of the Cs salts were less than 6%. It is plausible that the micropores originate from the heteropoly anion defects in the crystallite, which form to avoid mismatches in the Cs+/(heteropoly anion) ratio required for charge balance (=4) and for a bcc structure (=3). The surface of the Cs salt introduced with n-butyl groups was hydrophobic, although the surface density of the n-butyl groups was low. On the other hand, the hydroxyl groups present on the surface of Cs-4[PW11O39(Sn-OH)] had little effect on the adsorption of water, methanol, ethanol, and hexane but a great impact on that for benzene due to the interactions between the -OH groups and the aromatic rings (-OH center dot center dot center dot pi). (C) 2013 Elsevier Inc. All rights reserved
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