The Civic-Minded Instructional Designers (CMID) framework: Educating instructional designers with community-based service-learning approaches

This dissertation examines the issue of academic preparation of future professional instructional designers in the context of higher academic institutions. It is presented in non-traditional dissertation format as approved by the Department of Curriculum and Instruction, Iowa State University. The dissertation is comprised of three publishable journal articles that would represent Chapters 2, 3 and 4 of a more traditional dissertation, along with introduction and conclusion chapters. The dissertation argues that current approaches to educate instructional designers are career-centered and technically-oriented, resulting in production of an elite group of instructional designers - designers whose services become exclusively available only to selective clients and therefore disregarding the majority of others. The first study is therefore focused on understanding the concept of civic professionalism in Instructional Design and Technology (IDT). A novel framework based on synthesis of literature is proposed to educate civic-minded instructional designers. Using this proposed Civic-Minded Instructional Designers (CMID) framework to design an instructional experience, the second ethnographic study investigates just how a group of three IDT students enacted their civic-minded agencies and discusses the challenges they faced in their roles as consultants to three non-profit organizations. Data were gathered through participant-observation techniques and complemented with participants\u27 interviews, analyses of their works, and a researcher\u27s reflective journal. Findings reveal that students enacted their civic-minded activity by addressing community members\u27 needs, giving voices to their community partners, addressing issue of projects\u27 sustainability, being sensitive to community partners\u27 perspectives while diplomatically voicing professional opinions, and acknowledging their community partners as design partners . In navigating these challenges, they were found to continuously make adjustments, to reconfigured their roles, and to built trusting relationships with their community partners as civic-minded agents. This second study contributes towards better understanding of instructional designers\u27 roles within larger social contexts. The third study additionally explores the potential use of a service-learning pedagogical approach to educate civic-minded instructional designers. Using a naturalistic inquiry approach, it explores the benefits and challenges of integrating service-learning in the context of an introductory IDT course. Data were gathered via observations, participants\u27 interviews, and analyses of participants\u27 artifacts, including their online discussions, written reflections, and project work. Findings revealed that the service-learning approach allows students to gain a better understanding of the course content and to escalate their civic values. Two main challenges identified were in the form of severe group conflicts triggered by a combination of relationship, task, and processes related to the project work, and problems in gaining access to resources. While these challenges impacted students\u27 quality of work, they were also found to prompt students to better understand themselves as instructional designers and as individuals. Together, these research elements provide insights on the concept of civic professionalism, a critical yet unexplored aspect of IDT literature, in the IDT field. Most importantly, it provides a reconceptualization by looking at IDT as a profession, and offers an alternative way of preparing professional instructional designers at higher education institutions

Starburst and AGN activity in ultraluminous infrared galaxies

(Abridged) We examine the power source of 41 local Ultraluminous Infrared Galaxies using archival infrared and optical photometry. We fit the observed Spectral Energy Distributions (SEDs) with starburst and AGN components; each component being drawn from a family of templates. We find all of the sample require a starburst, whereas only half require an AGN. In 90% of the sample the starburst provides over half the IR emission, with a mean fractional luminosity of 82%. When combined with other galaxy samples we find that starburst and AGN luminosities correlate over 6 decades in IR luminosity suggesting that a common factor governs both luminosities, plausibly the gas masses in the nuclear regions. We find that the mid-IR 7.7 micron line-continuum ratio is no indication of the starburst luminosity, or the fractional AGN luminosity, and therefore that this ratio is not a reliable diagnostic of the power source in ULIRGs. We propose that the scatter in the radio-IR correlation in ULIRGs is due to a skewed starburst IMF and/or relic relativistic electrons from a previous starburst, rather than contamination from an obscured AGN. We show that most ULIRGs undergo multiple starbursts during their lifetime, and by inference that mergers between more than two galaxies may be common amongst ULIRGs. Our results support the evolutionary model for ULIRGs proposed by Farrah et al 2001, where they can follow many different evolutionary paths of starburst and AGN activity in transforming merging spiral galaxies into elliptical galaxies, but that most do not go through an optical QSO phase. The lower level of AGN activity in our local sample than in z~1 HLIRGs implies that the two samples are distinct populations. We postulate that different galaxy formation processes at high-z are responsible for this difference.Comment: 24 pages, 8 figures. Accepted for publication in MNRA

The X-ray Spectrum of the z=6.30 QSO SDSS J1030+0524

We present a deep XMM-Newton observation of the z=6.30 QSO SDSS J1030+0524, the second most distant quasar currently known. The data contain sufficient counts for spectral analysis, demonstrating the ability of XMM-Newton to measure X-ray spectral shapes of z~6 QSOs with integration times >100ks. The X-ray spectrum is well fit by a power law with index Gamma=2.12 +/- 0.11, an optical-X-ray spectral slope of a_{ox}=-1.80, and no absorption excess to the Galactic value, though our data are also consistent with a power law index in the range 2.02 < Gamma < 2.5 and excess absorption in the range 0 < N_H(cm^-2) < 8x10^22. There is also a possible detection (2 sigma) of FeKa emission. The X-ray properties of this QSO are, overall, similar to those of lower-redshift radio-quiet QSOs. This is consistent with the statement that the X-ray properties of radio-quiet QSOs show no evolution over 0<z<6.3. Combined with previous results, this QSO appears indistinguishable in any way from lower redshift QSOs, indicating that QSOs comparable to those seen locally existed less than one Gyr after the Big Bang.Comment: ApJ Letters, accepte

Spectral energy distributions of quasars selected in the mid-infrared

We present preliminary results on fitting of SEDs to 142 z>1 quasars selected in the mid-infrared. Our quasar selection finds objects ranging in extinction from highly obscured, type-2 quasars, through more lightly reddened type-1 quasars and normal type-1s. We find a weak tendency for the objects with the highest far-infrared emission to be obscured quasars, but no bulk systematic offset between the far-infrared properties of dusty and normal quasars as might be expected in the most naive evolutionary schemes. The hosts of the type-2 quasars have stellar masses comparable to those of radio galaxies at similar redshifts. Many of the type-1s, and possibly one of the type-2s require a very hot dust component in addition to the normal torus emission.Comment: 4 pages, 2 figures, to appear in the proceedings of The Spectral Energy Distribution of Galaxies, Preston, September 2011, eds R.J. Tuffs & C.C. Popesc

Kejadian Luar Biasa Antraks Di Kabupaten Boyolali 2011

Anthrax is a zoonotic disease that can attack various types of livestock and humans and cause death in highnumbers. Boyolali is one of anthrax infected areas since 1990. On Saturday February 12, 2011, the Public Healthreceived a report from the health center Boyolali Klego II regarding alleged cases of anthrax outbreaks in HamletVillage defense Karangmojo Klego Boyolali District. The purpose of this activity to find out and get an idea of??skin anthrax outbreak in the Village District Karangmojo Klego Boyolali.Materials and Methods: Diagnosis based on clinical symptoms and the investigation is descriptive to 16 peoplewith anthrax.Results and Discussion: The case has a fever (100%), flushing fluid swelling (100%), necrotic tissue in the wound(100%), black crust covered the wound (81.3%), swelling of the skin (81.3% ).Conclusions and Recommendations: skin anthrax outbreak occurred in the Hamlet defense in 16 residents. It issuggested that this outbreak does not happen again is to enable surveillance of anthrax in the health officeBoyolali, increasing public knowledge and vaccination of livestock on a regular basis

Mid-Infrared Spectroscopy of Optically Faint Extragalactic 70 micron Sources

We present mid-infrared spectra of sixteen optically faint sources with 70 micron fluxes in the range 19-38mJy. The sample spans a redshift range of 0.35<z<1.9, with most lying between 0.8<z<1.6, and has infrared luminosities of 10^{12} - 10^{13} solar luminosities. Ten of 16 objects show prominent polycyclic aromatic hydrocarbon (PAH) emission features; four of 16 show weak PAHs and strong silicate absorption, and two objects have no discernable spectral features. Compared to samples with 24 micron fluxes >10mJy, the 70\um sample has steeper IR continua and higher luminosities. The PAH dominated sources are among the brightest starbursts seen at any redshift, and reside in a redshift range where other selection methods turn up relatively few sources. The absorbed sources are at higher redshifts and have higher luminosities than the PAH dominated sources, and may show weaker luminosity evolution. We conclude that a 70 micron selection extending to ~20mJy, in combination with selections at mid-IR and far-IR wavelengths, is necessary to obtain a complete picture of the evolution of IR-luminous galaxies over 0<z<2.Comment: ApJ accepte

HERUS: the far-IR/submm spectral energy distributions of local ULIRGs and photometric atlas

We present the Herschel-SPIRE photometric atlas for a complete flux limited sample of 43 local ultraluminous infrared galaxies (ULIRGs), selected at 60 μm by IRAS, as part of the HERschel ULIRG Survey (HERUS). Photometry observations were obtained using the SPIRE instrument at 250, 350, and 500 μm. We describe these observations, present the results, and combine the new observations with data from IRAS to examine the far-infrared spectral energy distributions (SEDs) of these sources. We fit the observed SEDs of HERUS objects with a simple parametrized modified blackbody model, where temperature and emissivity β are free parameters. We compare the fitted values to those of non-ULIRG local galaxies, and find, in agreement with earlier results, that HERUS ULIRGs have warmer dust (median temperature T = 37.9 ± 4.7 K compared to 21.3 ± 3.4 K) but a similar β distribution (median β = 1.7 compared to 1.8) to the Herschel reference sample (HRS, Cortese et al. 2014) galaxies. Dust masses are found to be in the range of 107.5–109 M⊙, significantly higher than that of HRS sources. We compare our results for local ULIRGs with higher redshift samples selected at 250 and 850 μm. These latter sources generally have cooler dust and/or redder 100-to-250  μm colours than our 60 μm-selected ULIRGs. We show that this difference may in part be the result of the sources being selected at different wavelengths rather than being a simple indication of rapid evolution in the properties of the population

On the multiplicity of ALMA Compact Array counterparts of far-infrared bright quasars

We present ALMA Atacama Compact Array (ACA) 870 micron continuum maps of 28 infrared-bright SDSS quasars with Herschel/SPIRE detections at redshifts 2-4, the largest such sample ever observed with ALMA. The ACA detections are centred on the SDSS coordinates to within 1 arcsec for about 80 per cent of the sample. Larger offsets indicate that the far-infrared (FIR) emission detected by Herschel might come from a companion source. The majority of the objects (about 70 per cent) have unique ACA counterparts within the SPIRE beam down to 3-4 arcsec resolution. Only 30 per cent of the sample shows clear evidence for multiple sources with secondary counterparts contributing to the total 870 micron flux within the SPIRE beam to at least 25 per cent. We discuss the limitations of the data based on simulated pairs of point-like sources at the resolution of the ACA and present an extensive comparison of our findings with recent works on the multiplicities of sub-millimetre galaxies. We conclude that, despite the coarse resolution of the ACA, our data support the idea that, for a large fraction of FIR-bright quasars, the sub-mm emission comes from single sources. Our results suggest that, on average, optically bright quasars with strong FIR emission are not triggered by early-stage mergers but are, instead, together with their associated star formation rates, the outcome of either late-stage mergers or secular processes.Comment: 16 pages, 10 figure

Factors That Affect College Students' Attitudes Toward Interracial Dating

This study was designed to examine the attitudes of undergraduate students toward interracial dating. The study examined the influence of race, gender, and previous interracial dating experience on interracial dating attitudes. The independent variable of racial identity salience was also examined. A final sample consisted of 389 students, recruited from first year political science classes at the University of North Texas. An 11- item self administered questionnaire was used to collect the data. The results indicated that race and previous interracial dating experience was associated with college students' attitudes. A weak association was also found between greater racial identity salience and less positive interracial dating attitudes. Future research should further examine racial identity salience and its role in partner selection