6,145 research outputs found
Operant behaviour : interactions in multi-operant schedules / Jason M. White.
No full textix, 267 leaves : graphs, tables ; 30 cm.Thesis (Ph.D.)--University of Adelaide, Dept. of Psychology, 198
Rarefied gas effects on the aerodynamics of high area-to-mass ratio spacecraft in orbit
No full textThe aerodynamic situation of a satellite-on-a-chip operating in low Earth orbit bears some resemblance to a classical Crookes radiometer. The large area-to-mass ratio characteristic of a SpaceChip means that very small surface-dependent forces produce non-negligible accelerations that can significantly alter its orbit. When the temperature of a SpaceChip changes, the drag force can be changed: if the temperature increases, the drag increases (and vice versa). Analytical expressions available in the literature that describe the change in drag coefficient with orbit altitude and SpaceChip temperature compare well with our direct simulation Monte Carlo results presented here. It is demonstrated that modifying the temperature of a SpaceChip could be used for relative orbit control of individual SpaceChips in a swarm, with a maximum change in position per orbit of 50 m being achievable at 600 km altitude
The workshop as the work: white anti-racism organising in 1960s, 70s, and 80s US social movements
No full textThis thesis explores the rise of anti-racism workshops developed by white activists in various United States social movements from the late 1960s through the mid-1980s. The shifting ideology of the black freedom movement in the late 1960s, from integration to Black Power, transformed white activists‘ place within racial justice struggles. While recent scholarship has begun to turn its attention towards whites‘ ongoing racial justice activities, one of the most radical and widespread of these efforts is consistently overlooked: anti-racism workshops. Increasingly prevalent from the late 1960s through to the diversity-trainings explosion of the 1990s, this thesis demonstrates that these workshops had their roots in the black freedom, women‘s liberation and gay liberation movements. White activists from these movements led these workshops in order to examine white racial domination and privilege within both leftist social movements and larger US society.
Analysing case studies from the black freedom, women‘s liberation and gay liberation/rights movements, this thesis explores the foundational assumptions of anti-racism workshops. It seeks to explain how and why these efforts sought to frame race and racism as issues of knowledge and consciousness and why such efforts constituted radical praxis. It is argued that early anti-racism workshops were pedagogical projects that sought to confront the racial ignorance that structured the lives of whites in the US, including progressives and their liberation movements. This thesis draws attention to the efficacy and power of these workshops in terms of their epistemological effects, in the transformations they brought about in whites‘ understanding, or awareness, of racial realities
A tangled pathology: how AIDS became a "family disease" in Newark, New Jersey, 1970-1997
No full textAs AIDS proliferated in Newark, New Jersey through the 1980s, local AIDS-care advocates conceptualized AIDS in ways that reflected the disease’s impact on Newarkers. In reframing a problem that was predominately cast as a “gay disease” in North America, AIDS activists in Newark sought to highlight the growing prevalence of HIV and AIDS among urban communities of color. These efforts sought to direct national attention and resources towards affected “at risk” Newarkers by self-consciously portraying HIV and AIDS as a disease of the family. The lynchpin in this discourse was the pediatric AIDS patient. Discussions of HIV-positive children, and the “family disease” frame, became normalizing shorthand for addressing the complex biological transmission of the disease. By the late 1980s, advocates for Newark recognized the political utility in characterizing AIDS as a family disease at a time when the federal government was preparing to allocate funds for the areas hardest hit by the epidemic. This unique discourse was particularly useful in not only drawing attention to the problem of AIDS, but also to the societal “ills” associated with the disease’s prevalence among impoverished communities of color in Newark. As the family disease discourse evolved, Newark came to represent the ubiquitous, albeit insidious, urban problems that contributed to and exacerbated the epidemic in similar U.S. cities. Reserved almost exclusively to descriptions of families of color, the family disease discourse must be understood as—an implicit, if not explicit—response to mainstream perceptions of the inner city. Efforts to cope with AIDS in Newark benefited from the family disease script. Yet the legacy of the family disease discourse perhaps further encumbered cultural perceptions of inner city families as well. The family disease discourse thus inextricably linked the AIDS epidemic in impoverished communities color, and inner city families, to the pernicious social pathologies narrative that had over-determined perceptions of Newark since the late1960s.M.A.Includes bibliographical referencesIncludes vitaby Jason M. Chernesk
Habitat selection and movement patterns of cattle and white-tailed deer in a temperate savanna
No full textThis study investigated the use of high resolution satellite imagery in research involving habitat selection, and movement patterns of white-tailed deer and cattle in a semi-arid landscape. Vegetation classification was developed based on Ikonos satellite imagery that was then used to define habitat selection and characterize movement paths of deer and cattle to allow a better understanding of these 2 species. Pasture attributes were also measured to determine animal distribution throughout the study area in relation to roads, fences, water location, and supplemental feeders. Three cattle and 3 free ranging white-tailed deer were used during 3 trials to test seasonal differences in habitat selection and spatial distribution across the pasture.
Ikonos satellite imagery was classified to a final classification accuracy of 83.6%. Seven vegetation classes were defined in the classification with 1 class of bare ground/ herbaceous that represents interspaces between shrub vegetation. Classification accuracy was obtained using a ?? meter buffer to all ground control points increasing the accuracy from 71.29%.
All physical pasture attributes were significant to animal distributions in the study area when compared to the random distribution. Roads and water location were most important to cattle during the spring and summer. White tailed deer use of the pasture was more dependent on vegetation characteristics than physical attributes. Both cattle and deer selected habitat patches with a proportionately large percentage of bare-ground/interspaces (>40%). Deer were predominately found in areas containing higher percentages of shrub species, while cattle were found in areas containing a mixture of larger tree species in addition to shrub complexes.
Travel velocity and path tortuosity were measured to determine effects of vegetation attributes on animal movements. Both cattle and deer followed fairly linear paths (Fractal Dimension<1.2). Factors contributing to path tortuosity included mean patch size, number patches, and patch fractal dimension. Travel velocity was also measured and compared to vegetation association attributes. Travel velocity was significantly different between seasons for white-tailed deer however cattle and deer comparisons were not significant across the 3 trials. Number of patches, patch fractal dimension, mean patch size, and patch area were significant in the travel velocity model
Supplemental Material, SPPS750735_suppl_mat - Changing Norms Following the 2016 U.S. Presidential Election: The Trump Effect on Prejudice
No full textSupplemental Material, SPPS750735_suppl_mat for Changing Norms Following the 2016 U.S. Presidential Election: The Trump Effect on Prejudice by Christian S. Crandall, Jason M. Miller and Mark H. White II in Social Psychological and Personality Science</p
Interview: Jason Dittmer Interviewed by Steven M. Schnell, Editor, The Geographical Bulletin
No full textJason Dittmer is from Jacksonville, Florida, received his PhD from Florida State University in 2003, and has taught at University College London in the United Kingdom since 2007. He is the author of Popular Culture, Geopolitics, and Identity (Rowman and Littlefield, 2010) and the co-editor of Mapping the End Times: American Evangelical Geopolitics and Apocalyptic Visions (Ashgate, 2010). He is married to the lovely Stephanie and has two cats. They all live in southeast London
LAAM in the treatment of opioid dependence: a systematic review
No full textNicolas Clark, Alan Gijsbers and Jason M. Whitehttp://trove.nla.gov.au/work/3516264
Automated trading informed by event driven data
No full textThesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2016.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Cataloged from student-submitted PDF version of thesis.Includes bibliographical references (pages 61-65).Models of stock price prediction have traditionally used technical indicators alone to generate trading signals. In this paper, we build trading strategies by applying machine-learning techniques to both technical analysis indicators and market sentiment data. The resulting prediction models can be employed as an artificial trader used to trade on any given stock exchange. The performance of the model is evaluated using the S&P 500 index.by Jason W. Leung.M. Eng
Fishermyia stuckenbergi Jason G. H. Londt 2012, sp. n.
No full textFishermyia stuckenbergi sp. n. <p>Figs 1–7</p> <p>Etymology: This species is named in honour of the late Brian Roy Stuckenberg, dipterist, museologist, mentor and friend, whose entomological field trips to Madagascar stimulated much interest in the island’s insect fauna.</p> <p>Description:</p> <p> <i>Male</i>.</p> <p> <i>Head</i> (Fig. 2): Dark red-brown, white and black setose, silver to dull grey pruinose. Antenna (Fig. 7): Dark red-brown, scape and pedicel white setose (pedicel may have a single black seta distolaterally); segmental ratios 1.0:1.0:3.3:0.5, scape and pedi <i>-</i> cel of similar length, postpedicel more than 3× length of scape, style half length of scape. Style with 3 elements, short basal ring-like segment and longish central segment tipped by spine-like sensory element. Face dark red-brown ventrolaterally, brownorange centrally (colour considerably masked by pruinescence); mystax white, confined to ventral third of face; pruinescence strong silvery, covering face, except for ventrolateral parts; face:eye-width ratio (measured anteriorly at widest level of head) 1.0:1.7 (<i>i</i>. <i>e</i>., face a little more than half width of one eye); in profile, face gently protuberant ventrally. Frons and vertex (including ocellar tubercle) dark red-brown, longish black setose, entirely dull grey pruinose. Occipital region dark red-brown, white setose, silvery pruinose; setae both well developed (along eye margins and posterior of ocellar tubercle) and thin and wavy (mainly ventrally). Palpus: 2-segmented, dark red-brown, fairly longish white setose. Proboscis: dark red-brown, long, jutting out well beyond epistomal margin, fairly straight (slightly downwardly curved distally), white setose basoventrally.</p> <p> <i>Thorax</i>: dark red-brown to black dorsally, mainly brown-orange laterally, black and white setose, strongly silver pruinose. Pronotum dark red-brown to black, white setose, antepronotum with row of moderately developed macrosetae, silver pruinose. Prosternum orange-brown asetose, silver pruinose. Mesonotum blackish, except for dark red-brown postpronotal lobes, short black setose (except for few white setae posterolaterally), strongly silver pruinose (except for pair of darkish longitudinal fasciae which appear more weakly pruinose, depending on angle of view); major macrosetae black, 2–3 postpronotals, 2 notopleurals, 1 supra-alar, 2 postalars, acrostichals undifferentiated, 3–5 pairs of dorsocentrals mostly posterior of transverse suture. Scutellum dark red-brown, weakly white setose anteriorly, a single pair of black apical macrosetae, silver pruinose. Pleura brown-orange, white setose, silver pruinose (except for small apruinose area joining anepisternum and katepisternum); setae generally fine, sparse, except for moderately developed katatergals. Mediotergite and anatergites orangebrown, silver pruinose; anatergites white setose posteriorly. Legs: Coxae orange-brown, longish white setose, silver pruinose. Trochanters red-brown, white setose, apruinose. Femora robust, dark red-brown, but broadly brown-orange dorsally, fine white setose, macrosetae shortish black. Tibiae red-brown, fine white setose, macrosetae black. Tarsi dark red-brown, fine white setose, macrosetae black. Claws robust, dark red-brown, but narrowly orange-brown proximally. Pulvilli pale cream. Empodia well-developed, orange. Wings (Fig. 3): 13.1×5.0 mm (paratype wing, removed and flattened), other specimens with wing lengths <i>ca</i> 9.5, 12.2 (holotype) and 12.3 mm (wings somewhat twisted). Membrane transparent, unstained and without microtrichia. Venational features: Costal cell sometimes with distal crossvein (in 2 specimens); all marginal cells open except for <i>m 3</i> which is closed and stalked; veins CuA 2 and A 1 either narrowly separated or converging at wing margin (therefore cell <i>m 3</i> open or closed). Haltere: Creamy white with pale brownish base.</p> <p> <i>Abdomen</i>: Generally slightly broader than deep. Terga dark red-brown to black, lateral margins of T2–7 orange-brown, fine whitish setose; T1 with group of <i>ca</i> 5 pale yellowish macrosetae posterolaterally, entirely silver pruinose (weakly subapically). T2–7 lacking macrosetae, largely apruinose, except for strongly silver pruinose broad lateral margins. T8 largely obscured from view, uniformly dark red-brown. Sterna orange-brown, fine longish white setose, strongly silver pruinose, except for narrow apruinose lateral margins.</p> <p>Terminalia (Figs 4–6, paratype): Rotated clockwise through 180°. S8 well developed, with broadly rounded hind margin. Epandrial lobes simple, in dorsal view (Fig. 5) deeply incised medially resulting in two lobes, weakly attached basally, in lateral view lobes projecting distally to fairly narrowly rounded tips. Proctiger well developed, cerci fused medially, projecting well beyond level achieved by epandrium. Gonocoxite well developed, outer lobe fairly broadly rounded distally and obscuring view of aedeagus; inner lobe complex in structure with prominent, laterally projecting, curved hook-like processes best seen in ventral view (Fig. 6) and medially directed downwardly pointing bifurcate tips best seen in lateral view (Fig. 4). Gonostylus, best viewed laterally (Fig. 4), moderately developed, laterally compressed, upwardly curved with rounded distal end. Hypandrium well developed; in ventral view (Fig. 6) broad proximally, tapering fairly rapidly to laterally compressed distal lobe terminating in an almost bilobed distal end.</p> <p> <i>Female</i>. Unknown.</p> <p>Holotype: 1♂ “ MADAGASCAR: Tulear / Province, Andohahela Nat’l / Park, Ihazofotsy Parcelle 111 / 24°49.85’S, 46°32.17’E / 14 Feb–1 March 2004 ”, “California Acad of Science / colls: M. Irwin, F. Parker, / R. Harin’Hala. elev 80m / Malaise trap – in dry spiny / forest, MA-02-21-47 ” (CAS).</p> <p>Paratypes: 1♂ same data as holotype (CAS); 2♂ “ MADAGASCAR: Tulear Prov. / Andohahela N.P., Tsimelahy, / Parc. 11; 6–16 Dec. 2002, 180m / 24°56.21’S, 46°37.60’E; CAS, / Irwin, Parker, Harin’Hala colls: / M.t., transit. For. MA-02-20-12 ” (CAS, NMSA).</p> <p>Note: Type material is in good condition although mounted from alcohol, resulting in twisted wings.</p> <p> Other material (not examined): MADAGASCAR: <i>Tulear Prov.</i>: 3♂ Andohahela National Park, Ihazofotsy Parcelle 111, 24°49.85'S 46°32.17'E, 80 m, 2–11.iv. 2004, M. Irwin, F. Parker, R. Harin’Hala, Malaise trap in dry spiny forest (CAS, MA-02-21-49).</p> <p>Distribution,phenology and biology:Known from two localities in southern Madagascar (Fig. 8). Collected in December, February and April, it is assumed that this species is on the wing during summer. No biological information has been recorded, but see Discussion below.</p>Published as part of <i>Jason G. H. Londt, 2012, Fishermyia stuckenbergi, a new genus and species of Afrotropical robber fly from Madagascar (Diptera: Asilidae: Stenopogoninae), pp. 221-230 in African Invertebrates 53 (1)</i> on pages 223-226, DOI: 10.5733/afin.053.0114, <a href="http://zenodo.org/record/1301881">http://zenodo.org/record/1301881</a>
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