Analysis of black holes in our knowledge concerning animal health in the organic food production chain

Although a large body of research on health aspects can be found via the web or in conference proceedings, only few papers reach the peer reviewed literature. This aspect makes it difficult to judge the quality of available data that relate to health aspects associated with organic livestock production. Many data deal with "on farm case type studies" which often do not lead to a direct relation between certain management procedures and incidence of certain health aspects. The principle that organic held animals are in better condition concerning their health as compared to conventionally held animals has not yet been proven. Well-controlled studies are needed to show the effects of organically held animals on innate and adaptive immune responses and disease susceptibility. The conditions in organic livestock production lead to novel challenges concerning social interactions, physical requirements, climatic conditions and infectious burden which requires certain breeds of animals that differ considerably from the conventionally held animals. More research is needed to identify these breeds whereby breeding selection criteria specific to organic conditions and principles should be used. A number of health problems such as infestation with parasites is an important problem that has been noted in organic livestock (poultry and pig) production and more research is needed to both prevent and treat these infections. Although largely recommended, phytotherapy and homeopathy do not have any demonstrated efficacy in managing helminths. A multidisciplinary approach is needed to address these questions. Investigations should be concerned with aspects such as rotation, stocking density, disinfections strategies, genetic predisposition and novel (plant derived or biological) antihelminthics. A major drawback in the use of phytotherapeuticals is the lack of good clinical trials, most claims are based on traditional use, anecdotal evidence or extrapolation of human data. Another problem is the consistency/standardisation of the product; variations exist in the levels of "active" ingredients between lots. Extensive studies have shown that garlic has a beneficial effect on human health and therefore would possibly be a suitable candidate to increase the health of animals in organic production. Further research is needed to substantiate this claim. Although mastitis is not seen more often in organic dairy production compared to conventional farms, it is still frequently encountered and both basic and applied research concerning prevention and cure without the traditional use of antibiotics is needed. More knowledge is needed concerning effects of alternative treatments in organic livestock production. As long as alternative treatments have not formally been proven to be effective, allopathic treatments should be preferred. Studies are needed concerning the welfare aspects of disease and insufficient or postponed treatment in organic animal production systems. It is generally accepted that feather picking and cannibalism is a major problem in organic poultry and more research is needed to counter this unwanted behaviour of the animals. The following aspects including genetic influences, housing environment, feed composition and the presence of external parasites may be involved. Vaccination has been one of the largest success factors in the prevention of disease in production animals. Most vaccines used nowadays are genetically engineered and should thus carry the GMO label. GMO based vaccines produced by incorporating genetic material from bacteria or viruses into plants is an attractive approach but does not comply with the principles of organic farming. Investigations concerning various vaccination strategies with or without GMO approaches should be evaluated to prevent various infectious diseases in organic livestock production systems. Organic livestock production leads to an increase or re-emergence of certain zoonotic diseases ( Campylobacter, toxoplasma). This is a serious drawback concerning claims that organic products are healthier as compared to conventional products and research into the prevalence of certain zoonotic infections, risk factors, farm management, post slaughter decontamination and consumer perception/education is badly needed. Several micro-organisms are described to be present in feeds and could be sources of infections of farm animals. Such pathogens can be either present on the outside of the plant (epiphytes) or on the inside of the plant (endophytes). The incidence of pathogenic bacteria in/on plants used for organic animal feed is not clear and therefore research on the incidence of these pathogens is needed. Biological cycles such as the utilisation of manure from organic farms may potentially lead to the creation of infectious reservoirs. Research is needed to provide evidence for this hypothesis and strategies should be devised to prevent this problem. Little is known about the role of pests in the occurrence of disease in organic livestock production. Research is needed into the efficacy of alternative pest control strategies since current pest control methods are not in agreement with organic production principles (use of anticoagulants for rodent control). The obligatory use of straw bedding in swine household management leads to higher dust and bioareosol (endotoxin) levels in stables. This may affect susceptibility to lung disease (farmer and animal) and investigations concerning measures to reduce dust and bioaerosol levels are needed. Current literature on this subject is not concordant and true differences may exist between management systems from different countries. Piglet mortality is an important problem in organic production systems and research concerning genetic and housing aspects is currently performed but not yet reported in the peer-reviewed literature. Amino acid imbalance and research into novel feed sources with high protein content is needed. More knowledge is known concerning possible anti-nutritive factors in these feeds and the effects of these new nutrients on gut health of the animals. Amino acid imbalance may lead to higher excretion of excess amino acids into the environment. On farm research should be performed to substantiate whether these claims also apply to organic production systems. It has been suggested that organic feeds for animals in organic production systems may contain higher mycotoxin levels thereby adversely affecting their health status. As yet no conclusive data concerning this issue has been published and research into this area is needed to prove or reject this myth. As yet it is not known whether phytase levels in organic feed for pigs are sufficient to allow optimal utilisation of organic phosphor thereby also leading to a lower environmental pollution; further investigations are needed in this area

Academic analysis of the ICE Report ‘In Plain Sight: reducing the risk of infrastructure failure’

This is the final report from Loughborough University’s commission from the Institution of Civil Engineers (ICE) to carry out an academic evaluation of the applicability and validity of the ICE’s 12 Lines of Defence model, produced for infrastructure in response to the Grenfell Tower fire. Having reviewed the main report, the interview transcripts and associated literature we consider that this adaption of Reason’s Swiss Cheese Model as a basis of the Lines of Defence is appropriate, especially as it is well recognised and understood by a wide range of stakeholders. This notwithstanding, it does have some deficiencies, and so we have proposed enhancements including an integration of post-incident analysis, appreciation for crosscutting influencers that could positively or negatively impact every line of defence, and a general risk management framework that would act as a context setting for the model and ensure that the model can be understood by non-experts, and without specific prior knowledge of the industry. The changes have been proposed in order to increase and extend the reach of the model, without compromising its recognition and effectiveness

Teacher Vital Signs: A Two-Country Study of Teacher Vitality

Defining teacher vitality as the vigor, energy, passion, and joy teachers bring to their classroom, students and colleagues; this article describes an international, comparative, qualitative, phenomenological study of teachers’ lived experiences to determine the elements influencing teacher vitality. This is a two-country, multiple-case study of twenty-one middle and high school teachers who had taught ten to twenty years. In order to serve as a confirmation of the universality of the elements of teacher vitality, the study was not only conducted in two different schools in Idaho, but also was replicated in two different schools in Austria. In each of the four participating schools, both high and low-vitality teachers were matched for similarities, then investigated to determine why—in the same school, with the same administration and colleagues, and with the same struggles and challenges—some teachers maintain their vitality while other teachers lose their vitality and may even want to leave the profession. Data in the form of field notes, interview transcripts, categorized relevant information, composite comparisons, and anecdotal stories are analyzed to isolate patterns in teachers’ perceptions of their vitality in the classroom. The goal of this analysis is to identify common themes and to develop principles to help teachers receive life, vigor, and enjoyment from their work. “If I could make the same amount of money doing something else, I would leave teaching,” said the teacher sitting next to me on the last day of a high-energy, informative teachers’ conference. Nicole and I visited for several minutes and her statement continued to bother me, particularly as she described dragging herself throughout each day. I thought about her students who are missing that special passion and vitality in the classroom. Based on my conviction that students need teachers who are passionate about helping students learn, I probed further, only to discover that the only thing that kept this teacher in the profession year after year in her deflated condition was retirement benefits. As I reflected on our discussion, I was saddened to think that she had been at a three-day conference and had experienced no personal renewal, no spark of encouragement, or new connections to reenergize her for her role in the classroom. If I could have taken Nicole’s vital signs that day, what would I have measured? Using the analogy of physical vital signs that doctors and nurses take to analyze health, I began a search to determine the elements of teacher vitality“If I could make the same amount of money doing something else, I would leave teaching,” said the teacher sitting next to me on the last day of a high-energy, informative teachers’ conference. Nicole and I visited for several minutes and her statement continued to bother me, particularly as she described dragging herself throughout each day. I thought about her students who are missing that special passion and vitality in the classroom. Based on my conviction that students need teachers who are passionate about helping students learn, I probed further, only to discover that the only thing that kept this teacher in the profession year after year in her deflated condition was retirement benefits. As I reflected on our discussion, I was saddened to think that she had been at a three-day conference and had experienced no personal renewal, no spark of encouragement, or new connections to reenergize her for her role in the classroom. If I could have taken Nicole’s vital signs that day, what would I have measured? Using the analogy of physical vital signs that doctors and nurses take to analyze health, I began a search to determine the elements of teacher vitalit

Age Progression/Regression by Conditional Adversarial Autoencoder

"If I provide you a face image of mine (without telling you the actual age when I took the picture) and a large amount of face images that I crawled (containing labeled faces of different ages but not necessarily paired), can you show me what I would look like when I am 80 or what I was like when I was 5?" The answer is probably a "No." Most existing face aging works attempt to learn the transformation between age groups and thus would require the paired samples as well as the labeled query image. In this paper, we look at the problem from a generative modeling perspective such that no paired samples is required. In addition, given an unlabeled image, the generative model can directly produce the image with desired age attribute. We propose a conditional adversarial autoencoder (CAAE) that learns a face manifold, traversing on which smooth age progression and regression can be realized simultaneously. In CAAE, the face is first mapped to a latent vector through a convolutional encoder, and then the vector is projected to the face manifold conditional on age through a deconvolutional generator. The latent vector preserves personalized face features (i.e., personality) and the age condition controls progression vs. regression. Two adversarial networks are imposed on the encoder and generator, respectively, forcing to generate more photo-realistic faces. Experimental results demonstrate the appealing performance and flexibility of the proposed framework by comparing with the state-of-the-art and ground truth.Comment: Accepted by The IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2017

The university student experience of face-to-face and online discussions: coherence, reflection and meaning

This paper reports on an investigation into learning through discussions by undergraduate social work students. Second‐year students studying psychology for social work experienced discussions began with face‐to‐face tutorials, and then continued for some time after online. This study used closed‐ended questionnaires to investigate what students thought they were learning through discussions (their concepts), and how they engaged in the discussions face‐to‐face and online (their approaches). Significant associations were found among students’ concepts of discussions, approaches and levels of achievement. The results suggest that students who do not understand how discussions can help them to interrogate, reflect on and revise their ideas tended not to approach either face‐to‐face or online discussions in ways likely to improve their understanding or their levels of achievement. This type of insight is critical for teacher/designers wishing to create university experiences in which discussion is used to promote learning

Progress and bottlenecks in the early domestication of the perennial oilseed Silphium integrifolium, a sunflower substitute

Silflower (Silphium integrifolium Michx.) is in the early stages of domestication as a perennial version of oilseed sunflower, its close relative. Grain crops with deep perennial root systems will provide farmers with new alternatives for managing soil moisture and limiting or remediating soil erosion, fertilizer leaching, and loss of soil biota. Several cycles of selection for increased seed production potential following initial germplasm evaluation in 2002 have provided opportunities to document the botany and ecology of this relatively obscure species, to compare agronomic practices for improving its propagation and management, and to evaluate the differences between semi-domesticated and wild accessions that have accrued over this time through intentional and unintentional genetic processes. Key findings include: domestication has increased aboveground biomass at seedling and adult stages; seed yield has increased more, achieving modest improvement in harvest index. Harvest index decreases with nitrogen fertilization. Silflower acquires nitrogen and water from greater depth than typical crops. In agricultural silflower stands within its native range, we found that Puccinia silphii (rust) and Eucosma giganteana (moth) populations build up to unacceptable levels, but we also found genetic variation for traits contributing to resistance or tolerance. Breeding or management for reduced height and vegetative plasticity should be top priorities for future silflower research outside its native range.Fil: Vilela, Alejandra Elena. Museo Paleontológico Egidio Feruglio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: González Paleo, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaFil: Turner, Kathryn. The Land Institute; Estados UnidosFil: Peterson, Kelsey. The Land Institute; Estados UnidosFil: Ravetta, Damián Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaFil: Crews, Timothy E.. The Land Institute; Estados UnidosFil: Van Tassel, David. The Land Institute; Estados Unido

A Framework for Hybrid Manufacturing in Robotic Cells

Compared to other additive technologies, Wire and Arc Additive Manufacturing (WAAM) offers high deposition rates, flexibility and a larger build volume as well as reduction of material waste. WAAM can be combined with a subtractive technology in hybrid robotic cells to further increase the application scope, thus producing products with improved surface finish where needed. However, there are some open issues that limit this process. So, the main goal of this paper is to review current research developments and provide a framework aimed at manufacturing parts by hybrid cells. A procedure is defined which moves from the evaluation of the designed shapes, their analysis to identify a proper manufacturing sequence until the elaboration of the instructions for the cell automaton controllers. Main WAAM issues are outlined to identify main research directions, and a test case is presented to highlight the process phase

Bohr’s Relational Holism and the classical-quantum Interaction

In this paper I present and critically discuss the main strategies that Bohr used and could have used to fend off the charge that his interpretation does not provide a clear-cut distinction between the classical and the quantum domain. In particular, in the first part of the paper I reassess the main arguments used by Bohr to advocate the indispensability of a classical framework to refer to quantum phenomena. In this respect, by using a distinction coming from an apparently unrelated philosophical corner, we could say that Bohr is not a revisionist philosopher of physics but rather a descriptivist one in the sense of Strawson. I will then go on discussing the nature of the holistic link between classical measurement apparatuses and observed system that he also advocated. The oft-repeated conclusion that Bohr’s interpretation of the quantum formalism is untenable can only be established by giving his arguments as much force as possible, which is what I will try to do in the following by remaining as faithful as possible to his published work