Uncertainty Quantification of a Genetic Algorithm for Neutron Energy Spectrum Adjustment

GenSpec is software designed to use a genetic algorithm for neutron energy spectrum adjustment. Currently GenSpec can produce adjusted spectra, but the corresponding covariance matrix is not produced. The uncertainty quantification process implemented includes a parametric sensitivity analysis of the genetic algorithm modifiers for population, generations, gene-sites, polynomial order, and mutation rate. A random perturbation analysis was used to characterize the covariance of the genetic algorithm using multivariate normal random sampling of the characterized input data. The produced 640 by 640 covariance matrix has retained some characteristic features of the sampled covariance. The uncertainty found in the GenSpec program has minimized the covariance present in a calculated trial spectrum

Policy Impacts of Native Citizen Activists

Case illustration by American Indian activist John Redhouse about the deaths of Norman and Shirley Begay, who were active in the fight to stop radioactive wastes from being shipped and stored at the controversial White Mesa Hill. This research was completed money allocated during Round 5 of the Citizens’ Monitoring and Technical Assessment Fund (MTA Fund). Clark University was named conservator of these works. If you have any questions or concerns please contact us at [email protected]://commons.clarku.edu/dinecitizens/1003/thumbnail.jp

Literature Survey

Literature survey relating to the record of decision approving the license for the White Mesa Mill, the only fully-licensed and operating conventional uranium mill in the United States. Besides inadequate environmental impact statements and even more inadequate environmental assessments leading up to this decision, there exists a dearth of independent technical and scientific information related to the radiological effects of the White Mesa Mill. Also sadly lacking in the mill licensing and license amendment process was and is the existence of sound ethnographic data documenting the significance of the uranium mill\u27s impacts on Navajo cultural resources. However in the absence of adequate or independent environmental information and the paucity of sound cultural data, we were still able to survey and review the broad sweep of available literature appertaining to the unique history and geography of the uranium-rich Paradox Basin and Colorado Plateau.https://commons.clarku.edu/dinecitizens/1004/thumbnail.jp

Be honest, apologize, and give me my land back: how settler colonial states should reconcile with their indigenous peoples

In order for a state to be legitimate vis-à-vis its citizens, those citizens must be reasonably able to, minimally, trust that it is both able and willing to create laws that are morally just. For liberal theories of legitimacy, generally speaking, just laws are laws that respect the individual rights of persons. The settler colonial states of Australia and the United States have throughout their history failed to respect the rights of indigenous peoples qua individuals. There exists, then, a large amount of evidence suggesting that it would be reasonable for those peoples to not trusting those states. And, in so far as it is reasonable for indigenous peoples of those states to not trust that their respective states are able and willing to create just laws for them, those states are illegitimate. Given both the size, severity, and consistency of the wrongs committed against indigenous peoples by their respective settler colonial states it is not enough for those states to simply cease in their wrongdoing. The states in question must engage in a deliberate effort to generate the trust necessary for them to become legitimate. Political reconciliation, aimed at addressing the unique historical wrongs committed against indigenous peoples, can begin to generate that trust. However, political reconciliation alone will be insufficient. Given the substantial amount of evidence against the settler colonial states, we would be wrong in assuming a priori following reconciliation that they would be capable of making just laws for their respective indigenous citizens or willing to make such laws. Moreover, reconciliation does not necessarily address the wrong of failing to respect indigenous sovereignty. In order for that wrong to be addressed, indigenous peoples must be able to collectively secede. By choosing not to secede following reconciliation, an indigenous people would signal that they do trust their settler colonial state to make just laws for them, and to that extent that it is legitimate

River history and settlement pattern in eastern Sardinia: integrative geoarchaeology in the Rio Posada basin

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Adaptation to Variable Environments, Resilience to Climate Change: Investigating Land, Water and Settlement in Indus Northwest India

This paper explores the nature and dynamics of adaptation and resilience in the face of a diverse and varied environmental and ecological context using the case study of South Asia’s Indus Civilization (ca. 3000–1300 BC). Most early complex societies developed in regions where the climatic parameters faced by ancient subsistence farmers were varied but rain falls primarily in one season. In contrast, the Indus Civilization developed in a specific environmental context that spanned a very distinct environmental threshold, where winter and summer rainfall systems overlap. There is now evidence to show that this region was directly subject to climate change during the period when the Indus Civilization was at its height (ca. 2500–1900 BC). The Indus Civilization, therefore, provides a unique opportunity to understand how an ancient society coped with diverse and varied ecologies and change in the fundamental environmental parameters. This paper integrates research carried out as part of the Land, Water and Settlement project in northwest India between 2007 and 2014. Although coming from only one of the regions occupied by Indus populations, these data necessitate the reconsideration of several prevailing views about the Indus Civilization as a whole and invigorate discussion about human-environment interactions and their relationship to processes of cultural transformation

trans-Bis(1,1,1,5,5,5-hexa­fluoro­pentane-2,4-dionato-κ2 O,O′)bis­(4-methyl-1,2,3-selenadiazole-κN 3)copper(II)

In the title compound, [Cu(C5HF6O2)2(C3H4N2Se)2], the CuII atom (site symmetry ) is coordinated by two O,O′-bidentate 1,1,1,5,5,5-hexa­fluoro-2,4-penta­nedione (hp) ligands and two 4-methyl-1,2,3-selenadiazole mol­ecules, resulting in a slightly distorted trans-CuN2O4 octa­hedral geometry in which the cis angles deviate by less than 3° from 90°. The selenadiazole plane is canted at 73.13 (17)° to the square plane defined by the penta­nedionate O atoms. The F atoms of one of the hp ligands are disordered over two sets of sites in a 0.66 (3):0.34 (3) ratio. There are no significant inter­molecular inter­actions in the crystal

Adaptation to Variable Environments, Resilience to Climate Change: Investigating Land, Water and Settlement in Indus Northwest India

This paper explores the nature and dynamics of adaptation and resilience in the face of a diverse and varied environmental and ecological context using the case study of South Asia’s Indus Civilization (ca. 3000–1300 BC). Most early complex societies developed in regions where the climatic parameters faced by ancient subsistence farmers were varied but rain falls primarily in one season. In contrast, the Indus Civilization developed in a specific environmental context that spanned a very distinct environmental threshold, where winter and summer rainfall systems overlap. There is now evidence to show that this region was directly subject to climate change during the period when the Indus Civilization was at its height (ca. 2500–1900 BC). The Indus Civilization, therefore, provides a unique opportunity to understand how an ancient society coped with diverse and varied ecologies and change in the fundamental environmental parameters. This paper integrates research carried out as part of the Land, Water and Settlement project in northwest India between 2007 and 2014. Although coming from only one of the regions occupied by Indus populations, these data necessitate the reconsideration of several prevailing views about the Indus Civilization as a whole and invigorate discussion about human-environment interactions and their relationship to processes of cultural transformation

Cachd1 interacts with Wnt receptors and regulates neuronal asymmetry in the zebrafish brain

Neurons on the left and right sides of the nervous system often show asymmetric properties, but how such differences arise is poorly understood. Genetic screening in zebrafish revealed that loss of function of the transmembrane protein Cachd1 resulted in right-sided habenula neurons adopting left-sided identity. Cachd1 is expressed in neuronal progenitors, functions downstream of asymmetric environmental signals, and influences timing of the normally asymmetric patterns of neurogenesis. Biochemical and structural analyses demonstrated that Cachd1 can bind simultaneously to Lrp6 and Frizzled family Wnt co-receptors. Consistent with this, lrp6 mutant zebrafish lose asymmetry in the habenulae, and epistasis experiments support a role for Cachd1 in modulating Wnt pathway activity in the brain. These studies identify Cachd1 as a conserved Wnt receptor–interacting protein that regulates lateralized neuronal identity in the zebrafish brain