676 research outputs found
"The Fight of My Life" : Alfred Fitzpatrick and Frontier College's Extramural Degree for Working People
From 1922 to 1932, Frontier College was an "open" and "national" institution of
higher education, which was empowered to award degrees to working people without
access to the established universities. This experiment was the brain-child of Frontier
College's founder, Alfred Fitzpatrick (1862-1936), a former Presbytarian cleric inspired
by the "social gospel", who championed Canada's campmen and manual labourers. With
minimal resources and without a mature institutional structure, Fitzpatrick developed a
Board of Examiners composed of scholars drawn from across the country's English and
French universities and created an extramural degree programme which was, in fact,
unique in the English-speaking world. However, Frontier College soon met effective
opposition and, thus, the flowering of greater popular access to higher education was
delayed until after the Second World War.De 1922 à 1932, Frontier College était un établissement « ouvert » et « national »
d'enseignement supérieur habilité à décerner des grades aux travailleurs qui n'avaient
pas accès aux universités reconnues. Cette initiative originale était due à Alfred
Fitzpatrick (1862-1936), un ancien ecclésiastique presbytérien qu'animait l'esprit de
l' « évangile sociale » et qui s'était fait le défenseur de ceux qui travaillaient sur les
chantiers et des ouvriers. Disposant de maigres ressources et sans structure institutionnelle
éprouvée, Fitzpatrick mis sur pied une commission d'examen qui regroupait
des spécialistes venant d'universités francophones et anglophones de partout au pays et
créa un programme « extra-muros » menant à un diplôme. Rien de pareil n'existait
ailleurs dans le monde anglo-saxon. Malheureusement, le Frontier College se trouva vite
en butte à une puissante opposition, si bien que ce n'est qu'après la Seconde Guerre
mondiale que les humbles eurent plus largement accès à l'enseignement supérieur
Learning Components of Computational Models from Texts
The mental models of experts can be encoded in computational cognitive models that can support the functioning of intelligent agents. This paper compares human mental models to computational cognitive models, and explores the extent to which the latter can be acquired automatically from published sources via automatic learning by reading. It suggests that although model components can be automatically learned, published sources lack sufficient information for the compilation of fully specified models that can support sophisticated agent capabilities, such as physiological simulation and reasoning. Such models require hypotheses and educated guessing about unattested phenomena, which can be provided only by humans and are best recorded using knowledge engineering strategies. This work merges past work on cognitive modeling, agent simulation, learning by reading, and narrative structure, and draws examples from the domain of clinical medicine
Professional Reading
Intelligence and Espionage: An Analytical Bibliography, and Scholar\u27s Guide to Intelligence Literature: Bibliography of the Russell J. Bowen Collectio
Endothelin-1-induced alterations in phenylephrine-induced contractile responses are largely additive in physiologically diverse rabbit vasculature
ABSTRACT Endothelin-1 (ET-1) is an important modulator of vasomotor tone that is thought to participate in the etiology of cardiovascular disease by virtue of its ability to amplify the contractile responses of vascular smooth muscle cells to the effects of other vasoactive agents. Despite this fact, few studies have quantitated the expected contribution of ET-1 to the enhanced contractile responses elicited in the presence of another spasmogen. As a first step in this direction, ET-1 and phenylephrine (PE) were used to evaluate the effects of co-activation of the ET A/B or alpha-1 adrenergic receptors, respectively, on contractile responses in isolated rings of rabbit aorta, mesenteric and femoral artery, or strips of corporal tissue. Cumulative steady-state concentration-response curves (CRCs) were constructed to PE alone before the construction of a CRC to ET-1 alone, or a mixture of PE and ET-1 using a previously described drug concentration paradigm. Computer fits of the logistic equation to CRC data revealed that in all vascular tissues examined, the partial substitution of PE with ET-1 was associated with a significant vessel-dependent Ϸ3-to 30-fold leftward shift in the CRC (P Ͻ .01, Student's t test for paired samples), as judged by a significant increase in the pEC 50 (negative logarithm of the concentration of drug that elicits one-half of the calculated maximal effect), in the absence of any detectable effect on the calculated maximal contractile response (E max ) or the slope factor (). A theoretical CRC constructed using the Pö ch and Holzmann method for equiactive substitution demonstrated that the responses to mixtures of PE and ET-1 were often the result of simple additivity of agonist effects in these preparations, and thus, were "expected" based on detailed knowledge of the individual effects of these two agonists. Regardless of the precision of the Poch and Holzmann CRC in predicting the effects of this drug mixture in these vascular tissues, comparison of the "expected" contractile response with the "observed" response represents an important first step toward establishing a more uniform nomenclature for describing the physiological/pathophysiological effects of mixtures of drugs on diverse vasculature
Detecting attitudinal changes about death and dying as a result of end-of-life care curricula for medical undergraduates
BACKGROUND: There is heightened emphasis on teaching end-of-life (EOL) care in the medical school curriculum, but a relative paucity of tools focused on assessing key attitudinal changes due to curricula.
OBJECTIVE: We sought to evaluate the responsiveness of two validated measures of relevant attitudes to changes caused by two EOL curricula: a year-long Elective and a day-long Inter-Clerkship for medical undergraduates.
DESIGN: A case control design (n = 100) and a one group pretest-posttest design (n = 98) were used to ask: (1) Are these two attitudinal measures responsive to changes induced by two undergraduate EOL curricula? (2) Do these two curricula have an additive effect (i.e., taking both yields a stronger attitudinal change than taking only one)? (3) Are there attitudinal and sociodemographic differences between students who took the year-long elective EOL course and those who did not?
SUBJECTS: Undergraduate medical students.
MEASUREMENTS: Two self-report measures: Concept of a Good Death and Concerns about Dying.
RESULTS: Compared to nonelective participants, Elective participants reported less concern about working with dying patients at the end of the course and increased their valuation of clinical criteria in thinking about a good death. There were trends suggesting decreased general concern about dying and increased valuation of closure, and an interaction suggesting a larger impact on those with higher precourse concern scores. There were no differences between elective and nonelective participants at baseline. The Interclerkship increased students\u27 valuation of personal control aspects of death, and there was a trend in reducing concerns about working with dying patients. We did not find an additive effect of taking both curricula.
CONCLUSIONS: We conclude that both measures were responsive to the relatively large effects this study would have been able to detect, and may be useful in future research to substantiate the effectiveness of EOL curricula in influencing attitudes and level of comfort with death and dying
Needing smart home technologies: the perspectives of older adults in continuing care retirement communities
Background At present, the vast majority of older adults reside in the community. Though many older adults live in their own homes, increasing numbers are choosing continuing care retirement communities (CCRCs),which range from independent apartments to assisted living and skilled-nursing facilities. With predictions of a large increase in the segment of the population aged 65 and older, a subsequent increase in demand on CCRCs can be anticipated. With these expectations, researchers have begun exploring the use of smart home information-based technologies in these care facilities to enhance resident quality of life and safety, but little evaluation research exists on older adults' acceptance and use of these technologies.
Objective This study investigated the factors that influence the willingness of older adults living in independent and assisted living CCRCs to adopt smart home technology.
Subjects and setting Participants (n = 14) were recruited from community-dwelling older adults, aged 65 or older, living in one of two mid-western US CCRC facilities (independent living and assisted living type facilities).
Methods This study used a qualitative, descriptive approach, guided by principles of grounded theory research. Data saturation (or when no new themes or issues emerged from group sessions) occurred after four focus groups (n = 11 unique respondents) and was confirmed through additional individual interviews (n = 3).
Results The findings from this study indicate that although privacy can be a barrier for older adults' adoption of smart home technology their own perception of their need for the technology can override their privacy concerns.
Conclusions Factors influencing self-perception of need for smart home technology, including the influence of primary care providers, are presented. Further exploration of the factors influencing older adults' perceptions of smart home technology need and the development of appropriate interventions is necessary
Surveillance of fetal lung lesions using the congenital pulmonary airway malformation volume ratio: natural history and outcomes
ObjectivesThe congenital pulmonary airway malformation volume ratio (CVR) is a widely used sonographic measure of relative mass size in fetuses with lung malformations. The purposes of this study were to examine serial CVR measurements to understand longitudinal growth patterns and to determine correlation with postnatal imaging.MethodsAn institutional review boardâ approved retrospective review was performed on fetuses referred for an echogenic lung malformation between 2002 and 2014. For each fetus, the CVR was prospectively calculated using 2D ultrasound and followed with advancing gestation.ResultsBased on 40 fetuses, the mean initial CVR was 0.51â ±â 0.07 at 20.5â ±â 0.3â weeks of gestation. The CVR increased after 24â weeks of gestation (pâ =â 0.0014), peaking at a CVR of 0.96â ±â 0.11 at 25.5â ±â 0.05â weeks, followed by a significant decrease in the CVR to 0.43â ±â 0.07 prior to term (pâ <â 0.0001). However, approximately one third showed no appreciable increase in size. The mean CVR was significantly correlated with postnatal chest computed tomography (CT) size dimensions (pâ =â 0.0032) and likelihood for lung resection (pâ =â 0.0055).ConclusionsFetal lung malformations tend to follow one of two distinct growth patterns, characterized by either (1) a maximal CVR between 25 and 26â weeks of gestation or (2) minimal change in relative growth. The mean CVR correlates with postnatal CT size and operative management. © 2015 John Wiley & Sons, Ltd.What’s already known about the topic?The congenital pulmonary airway malformation volume ratio (CVR) is a common prenatal ultrasound measure of relative mass size in fetuses with lung malformations.The initial CVR and maximum CVR have been shown to be predictive of hydrops and neonatal respiratory compromise, respectively.What does this study add?Gestational age is important when interpreting CVR measurements because two thirds of lesions increase in size at 25â 26â weeks before spontaneous involution occurs.The mean CVR correlates with size measured by postnatal computed tomography scan.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/136421/1/pd4761_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/136421/2/pd4761.pd
Selenomethionine and methyl selenocysteine: multiple-dose pharmacokinetics in selenium-replete men
According to the Nutritional Prevention of Cancer (NPC) trial, a selenized yeast supplement containing selenium, 200 mcg/day, decreased the incidence of total cancer, cancers of the prostate, colon and lung, and cancer mortality. The active agent in the selenized yeast supplement was assumed to be selenomethionine (SEMET), although the supplement had not been well speciated. The SELECT study, largely motivated by the NPC trial, enrolling nearly 40 times as many subjects, showed unequivocally that selenium 200 mcg/day, with selenium in the form of SEMET, does not protect selenium-replete men against prostate or other major cancer. The agent tested by SELECT, pure SEMET, could have been different from the selenized yeast tested in NPC. One of the selenium forms suspected of having chemopreventive effects, and which may have been present in the NPC agent, is methyl selenocysteine (MSC). This study, with 29 selenium-replete patients enrolled in a randomized, double-blind trial, compared the multiple-dose toxicity, pharmacokinetics and pharmacodynamics of MSC and SEMET. Patients were on trial for 84 days. No toxicity was observed. Although SEMET supplementation increased blood selenium concentration more than MSC did, neither form had a more than minimal impact on the two major selenoproteins: selenoprotein P(SEPP1) and glutathione peroxidase(GPX)
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