Working Towards Collaborative Archaeology: Exploring Indigenous Perspectives on Archaeological Topics and Research Questions in Nain, Labrador

Archaeology is one avenue that people use to understand the past. It is through these contemporary understandings of the past that cultural identities are created and maintained. Unfortunately, Indigenous perspectives have been marginalized in archaeology and are dominated by mainstream western views. Indigenous archaeologists are attempting to decolonize archaeology by incorporating Indigenous perspectives and by engaging in collaborative projects with Indigenous communities. A successful collaboration is when all parties are involved in all aspects of the project, especially research design and formulation of research goals. Based on interviews with local Aboriginal community members in Nain, Labrador, this study explores Aboriginal perspectives on archaeological research. It specifically examines the types of research topics and questions local community members have about the past and discusses how archaeologists can begin to answer these questions. This study is useful to archaeologists working in Labrador who wish to practice a more inclusive and community-engaged archaeology

Responding to the Coastal Erosion Crisis and the Changing Archaeological Landscape of Ivvavik National Park

This paper discusses the effects of coastal erosion on archaeological sites in Ivvavik National Park and the current response to it. Ivvavik, located along the Yukon North Slope within the Inuvialuit Settlement Region, is rich in archaeological material that provides evidence of early human migration into the Canadian Arctic and the development of Inuvialuit culture. Ivvavik’s coastline is being significantly impacted by coastal erosion. Numerous sites have already eroded and many of the remaining are threatened or are at imminent risk of eroding. Research indicates that by 2100, more than 50% of the documented archaeological sites along Arctic coasts will likely be eroded. Throughout the Park co-management planning process, Inuvialuit Stakeholders identified 12 culturally significant coastal sites emphasizing their need for continued protection. In response, Parks Canada’s Western Arctic Field Unit (WAFU) implemented a coastal monitoring program to monitor the extent and impact of erosion on these archaeological sites and continues to work closely with its Indigenous partners to document traditional and local knowledge, and the archaeology, of these sites before they are eroded. Recently, WAFU has partnered with coastal erosion experts at the Alfred Wegener Institute to better understand erosion rates and future shoreline projections to more effectively inform mitigation decisions. It is our hope that through continued partnership with Indigenous stakeholders and by introducing specialized scientific research and advanced technologies, our team will be better equipped to strategically respond to the rapidly changing landscape and to the loss of archaeological sites along the coast in culturally appropriate ways

Performance comparison of Flutter platform GUI in web and native environments

This article compares the performance of the Flutter framework's graphical user interface (GUI) in a Windows platform native environment and in a web environment on the same device. The purpose of the article is to make a comparative analysis of screen building and rebuilding times in both environments. For the purpose of the paper, a test application has been created in which screens of different types of complexity are included. The stated theses: "The Flutter platform is less efficient in the web environment compared to the native environment in terms of view loading times." and "The Flutter platform is less efficient in a web environment compared to a native environment in terms of view rebuilding time" have been proven

Multi-level Protocol for Mechanistic Reaction Studies Using Semi-local Fitted Potential Energy Surfaces

In this work, we propose a multi-scale protocol for routine theoretical studies of chemical reaction mechanisms. The initial reaction paths of our investigated systems are sampled using the Nudged-Elastic Band (NEB) method driven by a cheap electronic structure method. Forces recalculated at the more accurate electronic structure theory for a set of points on the path are fitted with a machine-learning technique (in our case symmetric gradient domain machine learning or sGDML) to produce a semi-local reactive Potential Energy Surface (PES), embracing reactants, products and transition state (TS) regions. This approach has been successfully applied to a unimolecular (Bergman cyclization of enediyne) and a bimolecular (S$_\text{N}$2 substitution) reaction. In particular, we demonstrate that with only 50 to 150 energy-force evaluations with the accurate reference methods (here CASSCF and CCSD) it is possible to construct a semi-local PES giving qualitative agreement for stationary-point geometries, intrinsic reaction-coordinates and barriers. Furthermore, we find a qualitative agreement in vibrational frequencies and reaction rate coefficients. The key aspect of the method's performance is its multi-scale nature, which not only saves computational effort but also allows extracting meaningful information along the reaction path, characterized by zero gradients in all but one direction. Agnostic to the nature of the TS and computationally economic, the protocol can be readily automated and routinely used for mechanistic reaction studies

Of Collectors, Collections, and Libraries

Adapted from a talk given by Dr. Frank P. Pistor at the Syracuse University Library Associates\u27 Annual Members\u27 Luncheon, April 28, 1978. (See The Courier, 15.2 and 15.3, Summer 1978)

ICMS Ecológico : estudo de caso sobre o repasse aos municipios da AMSULPAR

Orientador : Prof. Dr. Wilson LoureiroMonografia (especialização) - Universidade Federal do Paraná, Setor de Ciências Agrárias, Curso de Especialização MBA em Gestão AmbientalInclui referência

Post-processing noisy quantum computations utilizing N-representability constraints

We propose and analyze a method for improving quantum chemical energy calculations on a quantum computer impaired by decoherence and shot noise. The error mitigation approach relies on the fact that the one- and two-particle reduced density matrices (1- and 2-RDM) of a chemical system need to obey so-called N-representability constraints. We post-process the result of an RDM measurement by projecting it into the subspace where certain N-representability conditions are fulfilled. Furthermore, we utilize that such constraints also hold in the hole and particle-hole sector and perform projections in these sectors as well. We expand earlier work by conducting a careful analysis of the method's performance in the context of quantum computing. Specifically, we consider typical decoherence channels (dephasing, damping, and depolarizing noise) as well as shot noise due to a finite number of projective measurements. We provide analytical considerations and examine numerically three example systems, \ch{H2}, \ch{LiH}, and \ch{BeH2}. From these investigations, we derive our own practical yet effective method to best employ the various projection options. Our results show the approach to significantly lower energy errors and measurement variances of (simulated) quantum computations

Immunohistochemical expression of Fascin-1 in colorectal cancer in relation to clinical and pathological parameters

   Introduction. Fascins are a group of proteins taking part in the maintenance of a proper structure of the cellular cytoskeleton. Fascin-1 is an actin-bundling protein present in neurons, fibroblasts, endothelial, smooth muscle, dendritic and mesenchymal cells whereas lack of its expression is characteristic of epithelial cells. Fascin-1 overexpression can be observed in neoplastic cells. Therefore, the aim of this study was to assess the expression of Fascin-1 protein in patients with colorectal cancer (CRC) and to analyze associations between Fascin-1 ex­pression and clinical-pathological parameters. Material and methods. The study material included postoperative samples (tumor and unchanged colon tissue) ob­tained from 51 CRC patients. Fascin-1 expression was assessed in the paraffin sections by immunohistochemistry. Results. A statistically significant correlation was found between the histological type of cancer and the expres­sion of Fascin-1 (p = 0.012). Increased expression of Fascin-1 in CRC was more frequent in adenocarcinoma type without the mucosal component with a better prognosis and decreased expression of this protein correlated with infiltration of cancer cells to blood and lymphatic vessels (p = 0.038). Conclusions. Our findings indicate a potential role of Fascin-1 in the pathogenesis of colon cancer; however, further studies will show whether this protein plays a role in the infiltration of colorectal cancer cells