The development of an Automated Residential Expert System (A.R.E.S.)

Due to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to [email protected], referencing the URI of the item.Includes bibliographical references: p. 15.Since the pioneering endeavors of Warren McCullock and Walter Pitts (involving computer learning) in 1943, artificial intelligence has fascinated experts and has aroused the interest of the general public. Currently, computer science researchers are employing this vibrant technology to the following areas: expert systems, fuzzy logic, neural networks, robotics, vision, natural language, speech recognition, and genetic algorithms. As a society, artificial intelligence has prompted intense philosophical discussions involving logic versus emotion, computer predictability versus human spontaneity, and the characteristics of true intelligence. Our project involves expert systems. Expert systems owe their popularity to the following features: their capacity to mass produce knowledge, their reduced cost of information decimation, their ability to work in environments deemed as hazardous to people, their permanence of expertise, their increased reliability (especially when humans would fail due to stress or fatigue), and their capability to explicitly explain every logical step from hypothesis to conclusion. At present, research efforts are working to resolve some of the disadvantages involving expert systems--mostly dealing with a computer s inherent inability to adapt to new situations and to detect incomplete orerroneous data. The overall goal of our research project is to develop A.R.E.S., an expert system that will solve a problem within on-campus residence hall affairs

Historical forest biomass dynamics modelled with Landsat spectral trajectories

Acknowledgements National Forest Inventory data are available online, provided by Ministerio de Agricultura, Alimentación y Medio Ambiente (España). Landsat images are available online, provided by the USGS.Peer reviewedPostprin

Intensifying pastoralism may not reduce greenhouse gas emissions : wildlife-dominated landscape scenarios as a baseline in life cycle analysis

The general public is increasingly critical of extensive, ruminant-dominated systems for their attributed high greenhouse gas emissions. However, advocates of low input, grass-fed systems present them as paradigmatic sustainable production systems because of their biodiversity, land use, rural development and animal welfare benefits. We reconcile both analyses by proposing to assess baseline emissions in grazed ecosystems. We show that policies aiming at transitioning grass-fed systems towards fodder-based (concentrate- or grain-based) systems can be ineffective at reducing emissions because wild ruminants or termites fill livestock's ecological niche. Climate change policies targeting livestock should carefully evaluate derived emissions scenarios.Peer reviewe

Considering Natural Baselines When Calculating Livestock Impacts Point to a Negligible Role of Grass-Fed Livestock Systems in Climate Change

ISBN: 978-9966-30-094-2The use of baselines is common in a variety of academic disciplines, including environmental science, but they are subjected to relativity depending on the geographical or historical reference considered. Such considerations are illustrated by how invasive species are evaluated or what reference baselines are considered in biodiversity assessments. The measurement of livestock effects on climate change has, however, disregarded the use of baselines. Current methodology is based exclusively on greenhouse gas emissions by individual animals, without putting them in their ecological context. As a consequence, current analyses of livestock impacts put grass-fed ruminant systems in the spotlight, because of their high methane emissions. Conversion into intensive, grain-fed chicken and pork systems is recommended to cope with increased meat demand, an approach that is being echoed by media. In this study we reviewed existing literature on baseline greenhouse gas emissions by wild ruminants, with models available for North America and northern Russia. We also considered the potential of termites in filling herbivore niches in an ungulate-free scenario and reviewed the literature for possible consequences of ensuing wildfires. We found consistent evidence for natural baseline scenarios to be of the same order of magnitude as current livestock scenarios. This implies that the current policy recommendations for tackling climate change through the livestock sector are likely to be much less effective than currently thought. Other studies on livestock environmental impacts, such as for water or biodiversity, have also not taken into account natural baseline levels from wild herbivores, hence depicting an exaggerated negative image on grass-fed livestock. Policy recommendations should take baseline levels into account, concentrate on reducing intensive use of fossil fuel and focus on double-win strategies for methane emission reduction, such as the use of manure-fed biogas cooking stoves. This paper uses concepts originally developed at Manzano & White (2019).Peer reviewe

Why Are Some Population Interventions for Diet and Obesity More Equitable and Effective Than Others? The Role of Individual Agency.

Jean Adams and colleagues argue that population interventions that require individuals to use a low level of agency to benefit are likely to be most effective and most equitable.his work was undertaken by the Centre for Diet and Activity Research (CEDAR), a UKCRC Public Health Research Centre of Excellence. Funding for CEDAR from the British Heart Foundation, Cancer Research UK, Economic and Social Research Council, Medical Research Council, the National Institute for Health Research, and the Wellcome Trust, under the auspices of the UK Clinical Research Collaboration, is gratefully acknowledged. The CEDAR grant is managed by the Medical Research Council (grant code MR/K023187/1) and the principal applicant is Prof NJ Wareham (who is not an author on this paper). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.This is the final version of the article. It first appeared from PLOS via http://dx.doi.org/10.1371/journal.pmed.1001990

Mechanical, Stress and Flow Considerations for Piping Design of Centrifugal Compressors

TutorialThis tutorial covers a range of factors that must be considered in the piping design associated with the installation of any new centrifugal compressor system. Multiple factors must be balanced in the piping design to have an overall successful final installation. The compressor piping must be configured and supported in a manner to safety contain the mechanical forces from the internal fluid pressure as well as the weight of the piping, fittings and valves. Additionally, the piping must not place any unusually high loads on the compressor itself or any piping supports due to thermal expansion, pressure elongation or weight loads. Finally, the piping layout should result in an even flow velocity profile that does not result in any detrimental impact to the aerodynamic performance of the centrifugal compressor

Dysfunctional grief related to COVID-19 in Latin America

The characteristics associated with COVID-19-related dysfunctional grief suggest that we are most likely facing a “dysfunctional grief pandemic” due to COVID-19. Thus this preliminary study reports frequencies of dysfunctional grief in ten Latin American countries that varied between 7.3% in Brazil and 14.6% in El Salvador. This highlights a greater need for Latin American countries to work together to improve the accessibility of treatment for dysfunctional grief

Pig farmers’ perceptions, attitudes, influences and management of information in the decision-making process for disease control

The objectives of this study were (1) to explore the factors involved in the decision-making process used by pig farmers for disease control and (2) to investigate pig farmers’ attitudes and perceptions about different information sources relating to disease control. In 2011 a qualitative study involving 20 face-to-face interviews with English pig farmers was conducted. The questionnaire was composed of three parts. The first part required farmers to identify two diseases they had experienced and which were difficult to recognize and/or control. They were asked to report how the disease problem was recognized, how the need for control was decided, and what affected the choice of control approach. For the latter, a structure related to the Theory of Planned Behaviour was used. Their verbal responses were classified as associated with: (1) attitude and beliefs, (2) subjective norms, or (3) perceived behavioural control (PBC). In the second part, five key sources of information for disease control (Defra, BPEX, research from academia, internet and veterinarians) and the factors related to barriers to knowledge were investigated. Interviews were recorded and transcribed. A qualitative analysis of the text of the interview transcripts was carried out using templates. Drivers for disease control were ‘pig mortality’, ‘feeling of entering in an economically critical situation’, ‘animal welfare’ and ‘feeling of despair’. Veterinarians were perceived by several participating farmers as the most trusted information source on disease control. However, in particular non-sustainable situations, other producers, and especially experiences from abroad, seemed to considerably influence the farmers’ decision-making. ‘Lack of knowledge’, ‘farm structure and management barriers’ and ‘economic constrains’ were identified in relation to PBC. Several negative themes, such as ‘lack of communication’, ‘not knowing where to look’, and ‘information bias’ were associated with research from academia. This study identified a range of factors influencing the decision-making process for disease control by pig farmers. In addition, it highlighted the lack of awareness and difficult access of producers to current scientific research outputs. The factors identified should be considered when developing communication strategies to disseminate research findings and advice for disease control

Contribution of advanced regeneration of Pinus Radiata D. Don. to transpiration by a fragment of Native forest in central Chile is out of proportion with the contribution to sapwood area

The transpiration of Nothofagus glauca (Phil.) Krasser and advanced Pinus radiata D. Don. regeneration was measured in a fragment of native N. glauca forest. Over the eight months of this study, P. radiata contributed approximately 60% of the total stand transpiration. This was out of proportion with the approximately 34% of the stand sapwood area contributed by P. radiata. This was due to the significantly greater sap flux density of the P. radiata compared to the N. glauca between May and October. Though the results are from a small study conducted as part of a larger experiment, it is argued that they suggest that invasion by P. radiata may substantially increase the risk from climate change to reserves of N. glauca forest in the Maule region of central Chile. In some reserves of N. glauca forest, Forestal Arauco S.A. manually removed P. radiata that regenerated after the wildfire of January 2017. This was a costly operation and there is a need for indices to assess competition. The ratio of sapwood area to leaf area is suggested as a potential index for assessing competition to identify stands at risk. © 2020 by the author