The Lab: Hip Hop and Library Technology

Hip hop is a creative and inspiring tool that you can use to engage library users in a litany of ways. With the appropriate classroom technology (in this case, two turntables and a mixer) as well as knowledge acquired over decades in the culture, we will explore how traditional hip hop production methods can alter our understanding of library technology as well as remix our notion of how libraries can support creativity. Can understanding hip hop literacies - particularly how the culture organizes information and classifies concepts - help inspire innovation? Let’s figure it out together

Prospectivas y el nuevo rol del comunicador planificador a inicios del siglo XXI

Prospective and new role as a communicator at the beginning of XXI century is a work that starts from scientific and social criticism. Tries to rescue the senses of social revolution, to better route in societies from communication professionals that by planning to achieve in social territories provide the tools to build the road to social welfare without forgetting the new trends and forms of communication XXI century society.Prospectivas y el nuevo rol de comunicador a inicios del siglo XXI, es un trabajo que parte desde la crítica científica y social. Pretende rescatar los sentidos de la revolución social para poder encaminar mejores condiciones en las sociedades desde los profesionales de la comunicación, que mediante la planificación logren en los territorios sociales brindar las herramientas para poder construir el camino hacia el bienestar social sin olvidarnos de las nuevas tendencias y formas de comunicación de la sociedad del siglo XXI

Planck early results. XV. Spectral energy distributions and radio continuum spectra of northern extragalactic radio sources

Spectral energy distributions (SEDs) and radio continuum spectra are presented for a northern sample of 104 extragalactic radio sources, based on the Planck Early Release Compact Source Catalogue (ERCSC) and simultaneous multifrequency data. The nine Planck frequencies, from 30 to 857 GHz, are complemented by a set of simultaneous observations ranging from radio to gamma-rays. This is the first extensive frequency coverage in the radio and millimetre domains for an essentially complete sample of extragalactic radio sources, and it shows how the individual shocks, each in their own phase of development, shape the radio spectra as they move in the relativistic jet. The SEDs presented in this paper were fitted with second and third degree polynomials to estimate the frequencies of the synchrotron and inverse Compton (IC) peaks, and the spectral indices of low and high frequency radio data, including the Planck ERCSC data, were calculated. SED modelling methods are discussed, with an emphasis on proper, physical modelling of the synchrotron bump using multiple components. Planck ERCSC data also suggest that the original accelerated electron energy spectrum could be much harder than commonly thought, with power-law index around 1.5 instead of the canonical 2.5. The implications of this are discussed for the acceleration mechanisms effective in blazar shocks. Furthermore in many cases the Planck data indicate that gamma-ray emission must originate in the same shocks that produce the radio emission

Drosophila Muller F Elements Maintain a Distinct Set of Genomic Properties Over 40 Million Years of Evolution

The Muller F element (4.2 Mb, ~80 protein-coding genes) is an unusual autosome of Drosophila melanogaster; it is mostly heterochromatic with a low recombination rate. To investigate how these properties impact the evolution of repeats and genes, we manually improved the sequence and annotated the genes on the D. erecta, D. mojavensis, and D. grimshawi F elements and euchromatic domains from the Muller D element. We find that F elements have greater transposon density (25–50%) than euchromatic reference regions (3–11%). Among the F elements, D. grimshawi has the lowest transposon density (particularly DINE-1: 2% vs. 11–27%). F element genes have larger coding spans, more coding exons, larger introns, and lower codon bias. Comparison of the Effective Number of Codons with the Codon Adaptation Index shows that, in contrast to the other species, codon bias in D. grimshawi F element genes can be attributed primarily to selection instead of mutational biases, suggesting that density and types of transposons affect the degree of local heterochromatin formation. F element genes have lower estimated DNA melting temperatures than D element genes, potentially facilitating transcription through heterochromatin. Most F element genes (~90%) have remained on that element, but the F element has smaller syntenic blocks than genome averages (3.4–3.6 vs. 8.4–8.8 genes per block), indicating greater rates of inversion despite lower rates of recombination. Overall, the F element has maintained characteristics that are distinct from other autosomes in the Drosophila lineage, illuminating the constraints imposed by a heterochromatic milieu

VizieR Online Data Catalog: 1Jy northern AGN sample (Planck+, 2016)

The complete sample presented in this paper consists of 104 northern and equatorial radio-loud AGN. It includes all AGN with declination >=-10° that have a measured average radio flux density at 37GHz exceeding 1Jy. Most of the sample sources have been monitored at Metsahovi Radio Observatory for many years, and the brightest sources have been observed for up to 30yr. (1 data file)

COVID-19 symptoms at hospital admission vary with age and sex: results from the ISARIC prospective multinational observational study

Background: The ISARIC prospective multinational observational study is the largest cohort of hospitalized patients with COVID-19. We present relationships of age, sex, and nationality to presenting symptoms. Methods: International, prospective observational study of 60 109 hospitalized symptomatic patients with laboratory-confirmed COVID-19 recruited from 43 countries between 30 January and 3 August 2020. Logistic regression was performed to evaluate relationships of age and sex to published COVID-19 case definitions and the most commonly reported symptoms. Results: ‘Typical’ symptoms of fever (69%), cough (68%) and shortness of breath (66%) were the most commonly reported. 92% of patients experienced at least one of these. Prevalence of typical symptoms was greatest in 30- to 60-year-olds (respectively 80, 79, 69%; at least one 95%). They were reported less frequently in children (≤ 18 years: 69, 48, 23; 85%), older adults (≥ 70 years: 61, 62, 65; 90%), and women (66, 66, 64; 90%; vs. men 71, 70, 67; 93%, each P < 0.001). The most common atypical presentations under 60 years of age were nausea and vomiting and abdominal pain, and over 60 years was confusion. Regression models showed significant differences in symptoms with sex, age and country. Interpretation: This international collaboration has allowed us to report reliable symptom data from the largest cohort of patients admitted to hospital with COVID-19. Adults over 60 and children admitted to hospital with COVID-19 are less likely to present with typical symptoms. Nausea and vomiting are common atypical presentations under 30 years. Confusion is a frequent atypical presentation of COVID-19 in adults over 60 years. Women are less likely to experience typical symptoms than men

The missing link : our Mexican California past, 1821-1848

This action thesis consisted of the development of a curriculum rubric that could be used to evaluate and select socially conscious and culturally responsible curriculum in the area of Mexican California (1821-1848) history. Instructors were surveyed, in the form of a questionnaire, for their knowledge on this historical period. Existing textbooks were evaluated for their omission or inclusion of pertinent and relevant factors during this period of time within Mexican California (1821-1848) history lessons. To evaluate the textbooks, a curriculum rubric was developed to closely assess the inclusion of relevant factors of study topics, such as Native Americans, women, government, and California leaders in the years between 1821 through 1848. The results of the project indicated that while textbooks are improving, many continue to provide inaccurate or incomplete information, especially as it relates to the contributions of Mexicans. Since California student demographics have been changing, particularly with Chicano student populations on the rise, the curriculum materials, now more than ever, need to reflect accurate information in order to portray the role and significance of our past Mexican contributions in the development of California. Student academic success correlates highly with the relevance and meanignfulness of subject matter (Hollins, 1996, p. 90). The accurate inclusion of the role Mexicans have played in California could be empowering for all students, but specifically empowering for the student population in California

Strengthening STEM Teaching in Rural, Indigenous-Serving Schools through Long-Term, Culturally Responsive Professional Development

This paper describes a particular teacher professional development model offered in schools on and bordering the Navajo Nation in the southwestern United States. The Diné Institute for Navajo Nation Educators (DINÉ) offers professional development across all content areas and grade levels, but here we focus specifically on our work in science, technology, engineering, and mathematics (STEM) content areas. Our work is situated explicitly within the literatures on Indigenous education, Native Nation Building, and culturally responsive schooling, but we also draw broadly on research in STEM education and teacher professional development. The research question explored in this paper is: To what extent and in what ways do teachers in the DINÉ develop STEM curriculum units that evidence culturally responsive principles and STEM education best practices? We share findings from three cohorts of teachers in the DINÉ’s STEM-focused professional development seminars. Teacher-authored curriculum units developed in the DINÉ were analyzed with two specific protocols: the CRAIS Tool, and the SCOOP notebook. Finally, we look closely at the curriculum units written by a single teacher in the DINÉ across the three years in order to get a clearer understanding of the nuances and richness of the findings and themes reported from the aggregate data