107 research outputs found
Direct and Indirect Effects of Invasive Cirsium arvense on Pollination in Southern Appalachian Floral Communities
Invasive plants can alter pollination dynamics in invaded communities by disrupting patterns of pollinator visitation, pollen transfer dynamics (conspecific [CP] and heterospecific [HP]), and reproductive success. The direction of invasive effects (competitive, neutral, and facilitative) may be partially determined by spatial scale and species’ floral traits. Here, we investigated pollinator visitation, CP and HP receipt, and pollen tube growth for species in a C. arvense present community and non-present community at two scales. At the community-level, the effect of C. arvense on pollinator visitation varied among species. Floral symmetry seemed to explain this variation. At the floral neighborhood-level, we found competitive effects for pollinator visits and mixed effects on CP deposition. The overall structure of plant-plant HP deposition networks was slightly altered. We observed lower average centrality across shared species in the C. arvense present community suggesting C. arvense had subverted their roles as pollen donors
Archival investigation of a late 19th century accounting information system: The use of decision aids in the American printing Industry
This study investigates management\u27s use of decision aids within the context of an accounting information system of a late 19th century American printing firm. Our findings suggest that the use of decision aids by management transformed traditional acÂÂcounting techniques and the cost accounting system into an intriÂÂcate accounting information system by 1880. These decision aids allowed managers to manipulate accounting information to support decisions involving pricing, cost allocation and estimation, profitability assessment, management of receivables, and inventory control. The findings shed new light on the early work of Alexander Hamilton Church on the issue of idle time accounting and raises questions about the uniform costing movement in the American printing industry
Accounting and financial reporting by a late 18th century American charity
Empirical research to date has neglected accounting and external financial reporting among 18th century American charitable institutions. Contemporary understanding of 18th century American practices is supported by evidence relating to commercial transactions primarily among colonial merchants. Our study examines the accounting and financial reporting of the Charleston Orphan House, the first municipal orphanage in America, from its inception in 1790 through its first five years of operations. The institution was established by city ordinance in 1790 which required the institution to keep a book of fair and regular accounts of all receipts and expenditures which will be subject at all times to the inspection of the Commissioners. The ordinance charged the orphanage\u27s Committee on Accounts to audit its accounts.The City Council required the institution\u27s board chairman to countersign the financial statements in 1792 before subjecting them to a second audit. The Orphan House employed a system of account books that recorded and facilitated the reporting of expenditures and sources of funds. Accounting and external reporting may have been legitimizing factors to overcome the liability of newness by promoting a sense of propriety and transparency among benefactors
The Mother Maria Kaupas Center - Strategic Plan
This aim of this document is to outline the future vision for the Kaupas Center as a hub for spirituality, community development, and leadership opportunities in Mount Carmel, PA. The report analyzes data from over 200 completed community surveys, 30 door to door pilot surveys, 14 downtown business owner surveys, 27 individual interviews with town leaders and professionals, at least 11 site visits to Mount Carmel, and 10 community meetings attended.
This report was developed by a group of Bucknell University Managing for Sustainability student researchers in a senior capstone course MSUS 400 taught by Prof. Eric Martin
The Archivist’s New Clothes; or, the Naked Truth about Evidence, Transactions, and Recordness
The electronic records projects at the University of British Columbia (UBC) and the University of Pittsburgh (Pitt) have been promoted as competing visions of the archival future. This article, the work of several authors with experience as both manuscript curators and institutional archivists, challenges the perception that the UBC and Pitt models are fundamentally different from one another, and argues that they share a similar and deeply flawed conception of the meaning of archives and the mission of the archival profession. Rather than accept the premises upon which both UBC and Pitt build their models, archivists should re-assert the broader and more practical theory of archives that has dominated much of U.S. archival history
Combining Citizen Science and Genomics to Investigate Tick, Pathogen, and Commensal Microbiome at Single-Tick Resolution
The prevalence of tickborne diseases worldwide is increasing virtually unchecked due to the lack of effective control strategies. The transmission dynamics of tickborne pathogens are influenced by the tick microbiome, tick co-infection with other pathogens, and environmental features. Understanding this complex system could lead to new strategies for pathogen control, but will require large-scale, high-resolution data. Here, we introduce Project Acari, a citizen science-based project to assay, at single-tick resolution, species, pathogen infection status, microbiome profile, and environmental conditions of tens of thousands of ticks collected from numerous sites across the United States. In the first phase of the project, we collected more than 2,400 ticks wild-caught by citizen scientists and developed high-throughput methods to process and sequence them individually. Applying these methods to 192 Ixodes scapularis ticks collected in a region with a high incidence of Lyme disease, we found that 62% were colonized by Borrelia burgdorferi, the Lyme disease pathogen. In contrast to previous reports, we did not find an association between the microbiome diversity of a tick and its probability of carrying B. burgdorferi. However, we did find undescribed associations between B. burgdorferi carriage and the presence of specific microbial taxa within individual ticks. Our findings underscore the power of coupling citizen science with high-throughput processing to reveal pathogen dynamics. Our approach can be extended for massively parallel screening of individual ticks, offering a powerful tool to elucidate the ecology of tickborne disease and to guide pathogen-control initiatives
The Inq13 POOC::A Participatory Experiment in Open, Collaborative Teaching and Learning.
This article offers a broad analysis of a POOC (“Participatory Open Online Course”) offered through the Graduate Center, CUNY in 2013. The large collaborative team of instructors, librarians, educational technologists, videographers, students, and project leaders reflects on the goals, aims, successes, and challenges of the experimental learning project. The graduate course, which sought to explore issues of participatory research, inequality and engaged uses of digital technology with and through the New York City neighborhood of East Harlem, set forth a unique model of connected learning that stands in contrast to the popular MOOC (Massive Open Online Course) model
System Design for an Integrated Lifelong Reinforcement Learning Agent for Real-Time Strategy Games
As Artificial and Robotic Systems are increasingly deployed and relied upon
for real-world applications, it is important that they exhibit the ability to
continually learn and adapt in dynamically-changing environments, becoming
Lifelong Learning Machines. Continual/lifelong learning (LL) involves
minimizing catastrophic forgetting of old tasks while maximizing a model's
capability to learn new tasks. This paper addresses the challenging lifelong
reinforcement learning (L2RL) setting. Pushing the state-of-the-art forward in
L2RL and making L2RL useful for practical applications requires more than
developing individual L2RL algorithms; it requires making progress at the
systems-level, especially research into the non-trivial problem of how to
integrate multiple L2RL algorithms into a common framework. In this paper, we
introduce the Lifelong Reinforcement Learning Components Framework (L2RLCF),
which standardizes L2RL systems and assimilates different continual learning
components (each addressing different aspects of the lifelong learning problem)
into a unified system. As an instantiation of L2RLCF, we develop a standard API
allowing easy integration of novel lifelong learning components. We describe a
case study that demonstrates how multiple independently-developed LL components
can be integrated into a single realized system. We also introduce an
evaluation environment in order to measure the effect of combining various
system components. Our evaluation environment employs different LL scenarios
(sequences of tasks) consisting of Starcraft-2 minigames and allows for the
fair, comprehensive, and quantitative comparison of different combinations of
components within a challenging common evaluation environment.Comment: The Second International Conference on AIML Systems, October 12--15,
2022, Bangalore, Indi
HAWAII ALGAL BIOFUEL
This report investigates the feasibility and affordability of producing algae-derived biofuel in Hawaii for military aviation. The authors evaluated methods for cultivation of algae, investigated the processes necessary to locally refine bio-oil into bio-kerosene, researched the environmental impacts of cultivation and refinement facilities in Hawaii, and studied the resultant cost per gallon of bio-kerosene production. Based on the current state of technology and the proposed system of systems architecture, this report estimates that bio-kerosene can be produced for $8.00 - 22.87/gal, indicating that although this system is technically feasible, it is unlikely to be affordable at current fuel prices without ongoing subsidy or further technical innovation.http://archive.org/details/hawaiialgalbiofu109453289
Adherence to Analgesics for Cancer Pain: A Comparative Study of African Americans and Whites Using an Electronic Monitoring Device
Despite well-documented disparities in cancer pain outcomes among African Americans, surprisingly little research exists on adherence to analgesia for cancer pain in this group. We compared analgesic adherence for cancer-related pain over a 3-month period between African Americans and whites using the Medication Event Monitoring System (MEMS). Patients (N = 207) were recruited from outpatient medical oncology clinics of an academic medical center in Philadelphia (≥18 years of age, diagnosed with solid tumors or multiple myeloma, with cancer-related pain, and at least 1 prescription of oral around-the-clock analgesic). African Americans reported significantly greater cancer pain (P \u3c .001), were less likely than whites to have a prescription of long-acting opioids (P \u3c .001), and were more likely to have a negative Pain Management Index (P \u3c .001). There were considerable differences between African Americans and whites in the overall MEMS dose adherence, ie, percentage of the total number of prescribed doses that were taken (53% vs 74%, P \u3c .001). On subanalysis, analgesic adherence rates for African Americans ranged from 34% (for weak opioids) to 63% (for long-acting opioids). Unique predictors of analgesic adherence varied by race; income levels, analgesic side effects, and fear of distracting providers predicted analgesic adherence for African Americans but not for whites. Perspective: Despite evidence of disparities in cancer pain outcomes among African Americans, surprisingly little research exists on African Americans\u27 adherence to analgesia for cancer pain. This prospective study uses objective measures to compare adherence to prescribed pain medications between African American and white patients with cancer pain
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