6,521 research outputs found
Examining Race/Ethnicity Diversity in the Enrollment of a 4-year CS University Program
No full textComputing departments in the United States are not producing the number of graduates that the workforce needs. At the same time, they lack gender and racial diversity. Therefore, it is important to attract students from minority groups that comprise a significant part of the US population and can bring an enriching, diverse perspective to the development of new technology. In this paper, we study patterns of enrollment and retention among minority students in a 4-year CS university program in order to better understand the challenges for increasing racial and ethnic diversity. We use student data from three core CS classes with a special focus on the introduction to programming (CS1) class. We compare the ethnic makeup of our CS enrollment with that of the student population at our university, that of the state and with nationwide numbers, and examine how the ethnic gap changes from an introductory programming class to an upper level class. We also analyze how different factors such as intent to major, prior experience in computing, and CS1 grades correlate with student retention
Meristotheca lysonensis X.-V. Nguyen, X.-T. Nguyen, Kittle & McDermid 2022
No full textMeristotheca lysonensis X.-V. Nguyen, X.-T. Nguyen, Kittle & McDermid sp. nov. (Figs. 3–14) Holotype: VIETNAM. Quang Ngai: Ly Son Island; 15.3743 ° N; 109.1329 ° E, 15 February 2021, coll. X.- V. Nguyen & X.- T. Nguyen (ION - CS 210215 b, tetrasporophyte, Fig. 3). GenBank accession number for rbc L and COI-5 P: MZ 770759 and MZ 770756 Isotypes: VIETNAM. Ninh Thuan: Thai An; 11.5648 ° N; 109.1269 ° E, 20 February 2021, coll. X.- V. Nguyen & X. - T. Nguyen (ION - CS 210301 b, tetrasporophyte, Fig. 5). GenBank accession number for rbc L and COI-5 P: MZ770761 and MZ770758. VIETNAM. Quang Ngai: Ly Son Island; 15.3743 ° N; 109.1329 ° E, 02 April 2003, coll. H.- D. Nguyen & H.- T. Pham (ION -01011b, male plant, Fig. 6). GenBank accession number for rbc L and COI-5 P: MZ770760 and MZ770757 Habitat: Growing on dead corals in the mid-to lower intertidal zone where subjected to strong wave action. Etymology: The specific epithet refers to Ly Son Island, the type locality of the new species in Viet Nam. Description: Thalli prostrate or forming decumbent prostrate clumps; thallus attached to the substratum by many secondary holdfasts; thalli flattened, gelatinous in texture, deep rose-red to dark red, 10–20 cm tall with small papillae on the surface; divided into many broad segments in an irregularly dichotomous manner with rounded apices, becoming gradually narrower above and tapering below to a cuneate or sometimes cordate or heart-shaped base with a short slender stipe. Mature blades are 1–2 cm broad, margins entire at the beginning, later giving rise to irregularly branched obvious proliferations, broader or narrower intermixed; surface smooth, sometimes roughened by the presence of warty or short spinose processes (Figs 3, 4), pinkish or yellowish when dried (Figs 5, 6). Blades are 1.3–1.8 mm thick in the basal portions (Fig. 7), becoming progressively thinner upward, 320–450 µm thick below the apices (Fig. 8). Thalli are multiaxial and internally consist of a filamentous medulla. In traverse section, the outer cortex consists of 3– 4 layers of small, elongate cells, 12–20 µm in diameter, the inner cortex consists of 4–5 layers of bigger, ellipsoidal, or rounded cells, 40–140 µm in diameter. The medulla occupies about 20–30% of the blade thickness. Axial filaments run parallel to the longitudinal plane of the blade; adjacent axial filaments frequently linked by secondary pit-connections (Fig. 9). Crosswise filaments originate from inner cortical cells and traverse the blade to connect with inner cortical cells of the opposite side (Fig. 10). Tetrasporangia in scattered patches throughout the outer cortex on both dorsal and ventral sides of the entire blade except at tips and lowermost portions. Tetrasporangia are cut off from cortical cells located in the second layer of the outer cortex. In a few cases, tetrasporangial initials appear laterally, pit-connected to their parental cells (Fig. 11). Tetrasporangial initials are basally attached to their supporting parental cortical cells (Fig. 12, solid triangle), and basal pit-connections remain in mature tetrasporangia. Tetrasporangia zonately divided, 10–15 µm diameter and 40–45 µm long (Fig. 13). Spermatangia produced from the outermost cortical cells (Fig. 14). Female gametophytes were not observed. R emarks:A morphological comparison of M. lysonensis and other related species is given in Table 1. Meristotheca lysonensis sp. nov. differs from M. coacta based on M. lysonensis’ larger size and greater blade thickness, blades that do not bear proliferations along the margins, and usually smooth blade margins. M. lysonensis clade habit is compressed to flattened. Pit-connections between tetrasporangial initials and the supporting parental cells change from lateral (young tetrasporangium) to basal (divided tetrasporangium). Meristotheca lysonensis also differs from M. procumbens in terms of thallus size and thickness, and the smaller medulla thickness in cross-sections. Position of pit-connections between tetrasporangial initials and the parental cells differ: basal position in M. lysonensis sp. nov., unlike lateral position in M. procumbens. This new species also differs from M. papulosa because M. lysonensis has many secondary holdfasts compared to single or a few erect blades arising from a discoid holdfast in M. papulosa. There are no branchlets in M. lysonensis whereas M. papulosa shows branchlets.Published as part of Nguyen, Xuan-Vy, Nguyen, Xuan-Thuy & Kittle Iii, Ronald P., 2022, Meristotheca lysonensis sp. nov. (Solieriaceae, Rhodophyta), a new flattened species from Vietnamese waters, pp. 137-148 in Phytotaxa 574 (2) on pages 141-144, DOI: 10.11646/phytotaxa.574.2.2, http://zenodo.org/record/738082
Exploring gender diversity in CS at a large public R1 research university
No full textWith the number of Computer Science (CS) jobs on the rise, there is a greater need for Computer Science graduates than ever. At the same time, most CS departments across the country are only seeing 25-30% of female students in their classes, meaning that we are failing to draw interest from a large portion of the population. In this work, we explore the gender gap in CS at Rutgers University using three data sets that span thousands of students across 3.5 academic years. By combining these data sets, we can explore interesting issues such as retention, as students progress through the CS major. For example, we find that a large percentage of women taking the Introductory CS1 course for majors do not intend to major in CS, which contributes to a large increase in the gender gap immediately after CS1. This finding implies that a large part of the retention task is attracting these women to further explore the major. We correlate our findings with initiatives that some CS programs across the country have taken to significantly improve their gender diversity, and identify initiatives that we can start with in our effort to increase the diversity in our program. These findings may also be applicable to the computing programs at other large public research universities.Peer reviewe
Ky Duyen Nguyen
No full textGenetic algorithms are most commonly applied to neural networks to determine their architecture or learning parameters through direct manipulation of the weights or parameters. In this paper, the genetic algorithm does not directly manipulate the weights, but applies backpropagation to the neural network. This approach causes the selection process to select for the best learner, not just the best weight structure. Results are presented. Keywords: genetic algorithms, neural networks, selection, learning, backpropagation INTRODUCTION In the natural world, an individual animal learns to deal with its environment as it moves and lives in that environment. Where does that animal learn how to learn? That individual animal did not learn how to learn by itself, but over generations of individuals, the collective species learned how to learn. We can thus assume that evolution is involved in the process of learning how to learn. Genetic algorithms are computer models of evolution, taking a po..
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
On indecomposable decompositions of CS-modules II
No full textAbstractIn this paper we give explicit necessary and sufficient conditions for an infinite direct sum of modules with local endomorphism rings to be a CS-module. As consequences, we obtain new characterizations of ∑-CS modules and ∑-CS rings which cover several earlier known results on this topic
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
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