454 research outputs found
Treaty No. 9 and the Question of “Unceded” Land South of the Albany River in Subarctic Ontario, Canada
The James Bay Treaty-Treaty No. 9 was unique among the numbered treaties of Canada in that there was a need for the concurrence of the Province of Ontario. Last-minute negotiations by the Dominion of Canada to gain said concurrence led to an agreement with the Province of Ontario, and this agreement became part of the Treaty No. 9 package at Ontario’s insistence. However, since the agreement was not executed until after the Treaty No. 9 expedition had left for the field, an incomplete Treaty No. 9 package that lacked the agreement was presented to and signed by the First Nation groups in 1905. Furthermore, spaces had been left in the vellum copies of Treaty No. 9 and the agreement to add in the date of the agreement when fully executed. In the spaces that were left for this purpose, the date of the agreement was backdated to 3 July. This act of deception was suggested by the Treasurer of the Government of Ontario, A. Matheson in order to date of the agreement earlier than the date in the Treaty. Thus, the common law legality of the Treaty No. 9 package must be questioned, especially since officials of the Governments of Canada and Ontario left documentation of their deception. Without the agreement being attached as specified in the Treaty No. 9 document that left Ottawa in 1905, consideration of the terms of the agreement by the First Nation signatories of the treaty could not have occurred prior to signing. It follows that there exists a question of whether the land south of the Albany River was ever ceded in Treaty No. 9 from a common law perspective, unless documentation can be presented indicating that the complete Treaty No. 9 package was presented to the First Nation signatories; the written record indicates otherwise. In the end, the courts will have to decide the legality of Treaty No. 9 from a common law perspective. Le Traité de la Baie James, ou Traité no 9, est unique comparativement aux autres traités numérotés du Canada en ce sens qu’il devait être accompagné de l’accord de la province de l’Ontario. Des négociations de dernière minute par le Dominion du Canada visant à obtenir ledit accord se sont conclues par une entente avec la province de l’Ontario, et cette entente a fait partie de l’ensemble du Traité no 9 à la demande insistante de l’Ontario. Toutefois, puisque l’entente n’a été exécutée qu’après le départ de l’expédition du Traité no 9 pour le terrain, l’ensemble du Traité no 9 était incomplet et il a été présenté ainsi, sans l’entente, aux groupes des Premières Nations qui l’ont signé en 1905. Par ailleurs, des espaces avaient été laissés dans les exemplaires sur vélin du Traité no 9 et de l’entente afin de permettre l’ajout de la date de l’entente une fois entièrement exécutée. Dans les espaces laissés à cette fin, la date de l’entente a été antidatée au 3 juillet. Cette supercherie avait été suggérée par le trésorier du gouvernement de l’Ontario, A. Matheson, afin que la date de l’entente soit antérieure à la date du traité. Par conséquent, il y a lieu de mettre en doute la légalité de l’ensemble du Traité no 9 en vertu de la common law, surtout parce que les représentants des gouvernements du Canada et de l’Ontario ont laissé des documents attestant de leur supercherie. Puisque l’entente n’était pas jointe au document du Traité no 9 qui est parti d’Ottawa en 1905, comme stipulé, les signataires du Traité faisant partie des Premières Nations n’ont pas pu prendre connaissance des modalités de l’entente avant d’apposer leur signature. Il faut donc se poser la question à savoir si les terres au sud de la rivière Albany ont vraiment été cédées en vertu du Traité no 9 du point de vue de la common law, à moins que des documents ne soient présentés selon lesquels l’ensemble complet du Traité no 9 a été remis aux signataires des Premières Nations. Pour l’instant, les écrits attestent du contraire. Au bout du compte, c’est aux tribunaux qu’il incombera de décider de la légalité du Traité no 9 en vertu de la common law.
A desktop expert system for the differential diagnosis of dementia:an evaluation study
Evince-I is a desktop expert system for the differential diagnosis of dementia, implemented on a personal computer. It is intended to assess the effectiveness of this new technology in modeling a psychiatrist who uses international guidelines for diagnosing dementia. EVINCE-I was tested in diagnosing 19 patients with varying stages of dementia and 10 patients showing other disorders except dementia. EVINCE-I and the human expert were in perfect agreement on the diagnosis of dementia and correlated highly on the diagnosis of dementia of the Alzheimer type and multiple infarct dementia. EVINCE-I thus offers important possibilities as a tool in investigating the data and procedures used by the human expert
Differential diagnosis of dementia:a comparison between the expert system EVINCE and clinicians
The diagnostic performance of the expert system EVINCE was compared with that of 85 clinicians in diagnosing 10 patients suspected of suffering from dementia. A multidisciplinary expert committee provided a standard diagnosis as reference for comparison. The results showed that the syndrome and etiologic diagnoses made by EVINCE were in very close agreement with those of the expert committee and that the diagnostic performance of EVINCE was better than that of the average clinician. The present findings indicate that expert systems, especially those within the realm of complex multidimensional medical problems, could be a valuable aid in medical practice
Akimiski Island, Nunavut, Canada: The Use of Cree Oral History and Sea-Level Retrodiction to Resolve Aboriginal Title
On 1 April 1999, Akimiski Island of the western James Bay region of northern Ontario, Canada, was included in the newly formed territory of Nunavut, Canada—an Inuit-dominated territory—even though the Inuit had never asserted Aboriginal title to the island. By contrast, the Omushkegowuk Cree of the western James Bay region have asserted Aboriginal title to Akimiski Island. The Government of Canada by their action (or inaction) has reversed the onus of responsibility for proof of Aboriginal title from the Inuit to the Cree. In other words, the Government of Canada did not follow their own guidelines and the common-law test for proof of Aboriginal title. In this paper, we documented and employed Cree oral history as well as a sea-level retrodiction (based on state-of-the-art numerical modeling of past sea-level changes in James Bay), which incorporated a modified ICE-6G ice history and a 3-D model of Earth structure, to establish that criterion 2 of the test for Aboriginal title has now been fully met. In other words, Cree traditional use and occupancy of Akimiski Island was considered sufficiently factual at the time of assertion of sovereignty by European nations. As all the criteria of the common-law test for proof of Aboriginal title in Canada, with respect to Akimiski Island, have now been addressed, the Cree have sufficient basis to initiate the process of a formal land claim.Le 1er avril 1999, l’île Akimiski, située dans la région ouest de la baie James, dans le nord de l’Ontario, au Canada, a été intégrée au nouveau territoire du Nunavut, territoire dominé par les Inuits, même si ceux-ci n’avaient jamais revendiqué le titre ancestral de cette île. En revanche, les Cris omushkegowuk de la région ouest de la baie James ont revendiqué leur titre ancestral à l’égard de l’île Akimiski. Le geste (ou l’absence de geste) du gouvernement du Canada a eu pour effet d’inverser la responsabilité de prouver le titre ancestral des Inuits aux Cris. Autrement dit, le gouvernement du Canada n’a pas respecté ses propres directives et les critères de droit commun comme preuve de titre ancestral. Dans cet article, nous avons documenté et employé l’histoire orale crie ainsi qu’une rétrodiction du niveau de la mer (d’après une modélisation numérique perfectionnée d’anciens changements du niveau de la mer de la baie James), contenant un historique modifié de la glace ICE-6G et une modélisation en trois dimensions de la structure de la Terre, afin d’établir que le critère 2 des critères du titre ancestral est maintenant entièrement atteint. Autrement dit, l’usage et l’occupation traditionnels de l’île Akimiski par les Cris ont été considérés comme des faits suffisants au moment de la revendication de la souveraineté par les nations européennes. Puisque tous les critères de droit commun permettant de prouver le titre ancestral de l’île Akimiski au Canada ont maintenant été respectés, les Cris disposent de fondements suffisants pour entreprendre une revendication territoriale officielle
Inhomogeneous Neutrino Degeneracy and Big Bang Nucleosynthesis
We examine Big Bang nucleosynthesis (BBN) in the case of inhomogenous
neutrino degeneracy, in the limit where the fluctuations are sufficiently small
on large length scales that the present-day element abundances are homogeneous.
We consider two representive cases: degeneracy of the electron neutrino alone,
and equal chemical potentials for all three neutrinos. We use a linear
programming method to constrain an arbitrary distribution of the chemical
potentials. For the current set of (highly-restrictive) limits on the
primordial element abundances, homogeneous neutrino degeneracy barely changes
the allowed range of the baryon-to-photon ratio. Inhomogeneous degeneracy
allows for little change in the lower bound on the baryon-to-photon ratio, but
the upper bound in this case can be as large as 1.1 \times 10^{-8} (only
electron neutrino degeneracy) or 1.0 \times 10^{-9} (equal degeneracies for all
three neutrinos). For the case of inhomogeneous neutrino degeneracy, we show
that there is no BBN upper bound on the neutrino energy density, which is
bounded in this case only by limits from structure formation and the cosmic
microwave background.Comment: 6 pages, no figure
NK1-r antagonist treatment comparable to decompressive craniectomy in reducing intracranial pressure following stroke
Background and Purpose: The morbidity and early mortality associated with stroke is largely attributable to cerebral edema and elevated intracranial pressure (ICP). Existing pharmacotherapies do not target the underlying pathophysiology and are often ineffective in sustainably lowering ICP, whilst decompressive craniectomy (DC) surgery is life-saving yet with surgical/peri-operative risk and increased morbidity in the elderly. Accordingly, there is an urgent need for therapies that directly target the mechanisms of edema genesis. Neurogenic inflammation, mediated by substance P (SP) binding to the tachykinin NK1 receptor (NK1-r), is associated with blood-brain barrier (BBB) disruption, cerebral edema and poor outcome post-stroke. NK1-r antagonist treatment ameliorates BBB dysfunction and cerebral edema in rodent stroke models. However, treatment has not been investigated in a large animal model, an important step toward clinical translation. Consequently, the current study compared the efficacy of NK1-r antagonist treatment to DC surgery in reducing ICP post-stroke in a clinically relevant ovine model. Methods: Anesthetized female Merino sheep (65 ± 6 kg, 18-24 months) underwent sham surgery (n = 4) or permanent middle cerebral artery occlusion (n = 22). Stroke animals were randomized into one of 5 treatments: 1×NK1 bolus (4 h), 2×NK1 bolus (4 h;9 h), 3×NK1 bolus (4 h;9 h;14 h), DC surgery (performed at 4 h) or saline vehicle. ICP, blood pressure and blood gasses were monitored for 24 h post-stroke. At 24 h post-stroke anesthetized animals underwent MRI followed by perfusion and brains removed and processed for histological assessment. Results: 2×NK1, 3×NK1 administration or DC surgery significantly (p < 0.05) reduced ICP compared to vehicle. 1×NK1 was ineffective in sustainably lowering ICP. On MRI, midline shift and cerebral edema were more marked in vehicles compared to NK1-r treatment groups. Conclusion: Two or three boluses of NK1-r antagonist treatment reduced ICP comparable to DC surgery, suggesting it may provide a novel alternative to invasive surgery for the management of elevated ICP.Annabel J. Sorby-Adams, Anna V. Leonard, Jan W. Hoving, Nawaf Yassi, Robert Vink, Adam J. Wells and Renée J. Turne
Experimental/Theoretical Comparisons of the Turbulence in the Scrape-Off-Layers of Alcator C-Mod, DIII-D, AND NSTX
Determining the temporal profile of intracranial pressure changes following transient stroke in an ovine model
Cerebral edema and elevated intracranial pressure (ICP) are the leading cause of death in the first week following stroke. Despite this, current treatments are limited and fail to address the underlying mechanisms of swelling, highlighting the need for targeted treatments. When screening promising novel agents, it is essential to use clinically relevant large animal models to increase the likelihood of successful clinical translation. As such, we sought to develop a survival model of transient middle cerebral artery occlusion (tMCAO) in the sheep and subsequently characterize the temporal profile of cerebral edema and elevated ICP following stroke in this novel, clinically relevant model. Merino-sheep (27M;31F) were anesthetized and subject to 2 h tMCAO with reperfusion or sham surgery. Following surgery, animals were allowed to recover and returned to their home pens. At preselected times points ranging from 1 to 7 days post-stroke, animals were re-anesthetized, ICP measured for 4 h, followed by imaging with MRI to determine cerebral edema, midline shift and infarct volume (FLAIR, T2 and DWI). Animals were subsequently euthanized and their brain removed for immunohistochemical analysis. Serum and cerebrospinal fluid samples were also collected and analyzed for substance P (SP) using ELISA. Intracranial pressure and MRI scans were normal in sham animals. Following stroke, ICP rose gradually over time and by 5 days was significantly (p < 0.0001) elevated above sham levels. Profound cerebral edema was observed as early as 2 days post-stroke and continued to evolve out to 6 days, resulting in significant midline shift which was most prominent at 5 days post-stroke (p < 0.01), in keeping with increasing ICP. Serum SP levels were significantly elevated (p < 0.01) by 7 days post-tMCAO. We have successfully developed a survival model of ovine tMCAO and characterized the temporal profile of ICP. Peak ICP elevation, cerebral edema and midline shift occurred at days 5-6 following stroke, accompanied by an elevation in serum SP. Our findings suggest that novel therapeutic agents screened in this model targeting cerebral edema and elevated ICP would most likely be effective when administered prior to 5 days, or as early as possible following stroke onset.Annabel J. Sorby-Adams, Anna V. Leonard, Levi E. Elms, Oana C. Marian, Jan W. Hoving, Nawaf Yassi, Robert Vink, Emma Thornton and Renée J. Turne
The frontotemporal syndrome of ALS is associated with poor survival
Thirty percent of ALS patients have a frontotemporal syndrome (FS), defined as behavioral changes or cognitive impairment. Despite previous studies, there are no firm conclusions on the effect of the FS on survival and the use of non-invasive ventilation (NIV) in ALS. We examined the effect of the FS on survival and the start and duration of NIV in ALS. Behavioral changes were defined as >22 points on the ALS-Frontotemporal-Dementia-Questionnaire or ≥3 points on ≥2 items of the Neuropsychiatric Inventory. Cognitive impairment was defined as below the fifth percentile on ≥2 tests of executive function, memory or language. Classic ALS was defined as ALS without the frontotemporal syndrome. We performed survival analyses from symptom ons
A replication study of genetic risk loci for ischemic stroke in a Dutch population: A case-control study
We aimed to replicate reported associations of 10 SNPs at eight distinct loci with overall ischemic stroke (IS) and its subtypes in an independent cohort of Dutch IS patients. We included 1,375 IS patients enrolled in a prospective multicenter hospital-based cohort in the Netherlands, and 1,533 population-level controls of Dutch descent. We tested these SNPs for association with overall IS and its subtypes (large artery atherosclerosis, small vessel disease and cardioembolic stroke (CE), as classified by TOAST) using an additive multivariable logistic regression model, adjusting for age and sex. We obtained odds ratios (OR) with 95% confidence intervals (95% CI) for the risk allele of each SNP analyzed and exact p-values by permutation. We confirmed the association at 4q25 (PITX2) (OR 1.43; 95% CI, 1.13-1.81, p = 0.029) and 16q22 (ZFHX3) (OR 1.62; 95% CI, 1.26-2.07, p = 0.001) as risk loci for CE. Locus 16q22 was also associated with overall IS (OR 1.24; 95% CI, 1.08-1.42, p = 0.016). Other loci previously associated with IS and/or its subtypes were not confirmed. In conclusion, we validated two loci (4q25, 16q22) associated with CE. In addition, our study may suggest that the association of locus 16q22 may not be limited to CE, but also includes overall IS
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