1,274 research outputs found
The economic valuation of water from the Ashburton River : implications for allocation : a thesis presented in partial fulfilment of the requirements for the degree of Masters of Agricultural Science in Resource Economics at Massey University
Recent legislative changes in New Zealand allow much greater flexibility in the procedures used by regional authorities to allocate water resources. In certain river catchments where competition for water in alternative uses is high, estimates of the economic value of water could prove useful in designing an allocation scheme. In this study two methods were used to value the water from the Ashburton River. First, a mathematical programming approach to estimate the value of water to farmers in the Ashburton catchment. This value is about 2.47 million and $5.15 million. We assess the methods and the results for implications in allocating Ashburton water between irrigators and in-stream flows
The Human Microbiome and Recurrent Abdominal Pain in Children
This project explores the nature of the human intestinal microbiome in healthy children and children with recurrent abdominal pain. The overall goal is to obtain a robust knowledge base of the intestinal microbiome in children without evidence of pain or gastrointestinal disease and in those with recurrent abdominal pain (functional abdominal pain (FAP) and FAP associated with changes in bowel habits, i.e., irritable bowel syndrome or IBS). Specific aims include: 1. Characterize the composition of the gut microbiome in healthy children by DNA sequencing. 2. Determine the presence of disease-specific organism signatures of variable gut microbiomes in children with recurrent abdominal pain. 3. Perform functional gut metagenomics by evaluation of whole community gene expression profiles and discovery of disease-specific pathway signatures. Multiple strategies have been deployed to navigate and understand the nature of the intestinal microbiome in childhood. These strategies included 454 pyrosequencing-based strategies to sequence 16S rRNA genes and understand the detailed composition of microbes in healthy and disease groups. Microarray-based hybridization with the PhyloChip and quantitative real-time PCR (qPCR) probes were applied as complementary strategies to gain an understanding of the intestinal microbiome from various perspectives. Data collected and analyzed during the HMP UH2 Demo project, from a set of healthy and IBS children (7-12 yo) may enable the identification of core microbiomes in children, in addition to variable components that may distinguish healthy from diseased pediatric states. Twenty-two children with IBS and twenty-two healthy children were enrolled and analyzed in the UH2 phase of this study. The planned enrollment targets for the UH2/3 phases include 50 healthy children, 50 children with FAP and 50 children with IBS (minimum of 3 time points per child). We are currently analyzing the dataset for the presence of disease-specific signatures in the human microbiome, and correlating these microbial signatures with pediatric health or IBS disease status in addition to IBS subtype (e.g., diarrhea-vs constipation-predominant). In the next phase, whole genome shotgun sequencing and metatranscriptomics will be performed with a subset of children in each group. This study explores the nature of core and variable human microbiome in pre-adolescent healthy children and children with IBS. 

Probably Approximately Knowing
Whereas deterministic protocols are typically guaranteed to obtain particular
goals of interest, probabilistic protocols typically provide only probabilistic
guarantees. This paper initiates an investigation of the interdependence
between actions and subjective beliefs of agents in a probabilistic setting. In
particular, we study what probabilistic beliefs an agent should have when
performing actions, in a protocol that satisfies a probabilistic constraint of
the form: 'Condition C should hold with probability at least p when action a is
performed'. Our main result is that the expected degree of an agent's belief in
C when it performs a equals the probability that C holds when a is performed.
Indeed, if the threshold of the probabilistic constraint should hold with
probaility p=1-x^2 for some small value of x then, with probability 1-x, when
the agent acts it will assign a probabilistic belief no smaller than 1-x to the
possibility that C holds. In other words, viewing strong belief as,
intuitively, approximate knowledge, the agent must probably approximately know
(PAK-know) that C is true when it acts.Comment: 23 pages, 2 figures, a full version of a paper whose extended
abstract appears in the proceeding of PODC 202
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The Pediatrician and Disaster Preparedness
Recent natural disasters and events of terrorism and war have heightened society's recognition of the need for emergency preparedness. In addition to the unique pediatric issues involved in general emergency preparedness, several additional issues related to terrorism preparedness must be considered, including the unique vulnerabilities of children to various agents as well as the limited availability of age- and weight-appropriate antidotes and treatments. Although children may respond more rapidly to therapeutic intervention, they are at the same time more susceptible to various agents and conditions and more likely to deteriorate if not monitored carefully.The challenge of dealing with the threat of terrorism, natural disasters, and public health emergencies in the United States is daunting not only for disaster planners but also for our medical system and health professionals of all types, including pediatricians. As part of the network of health responders, pediatricians need to be able to answer concerns of patients and families, recognize signs of possible exposure to a weapon of terror, understand first-line response to such attacks, and sufficiently participate in disaster planning to ensure that the unique needs of children are addressed satisfactorily in the overall process. Pediatricians play a central role in disaster and terrorism preparedness with families, children, and their communities. This applies not only to the general pediatrician but also to the pediatric medical subspecialist and pediatric surgical specialist. Families view pediatricians as their expert resource, and most of them expect the pediatrician to be knowledgeable in areas of concern. Providing expert guidance entails educating families in anticipation of events and responding to questions during and after actual events. It is essential that pediatricians educate themselves regarding these issues of emergency preparedness. For pediatricians, some information is currently available on virtually all of these issues in recently produced printed materials, at special conferences, in broadcasts of various types, and on the Internet. However, selecting appropriate, accurate sources of information and determining how much information is sufficient remain difficult challenges. Similarly, guidance is needed with respect to developing relevant curricula for medical students and postdoctoral clinical trainees
An Unorthodox Introduction to QCD
These are lecture notes presented at the 2017 CTEQ Summer School at the
University of Pittsburgh and the 2018 CTEQ Summer School at the University of
Puerto Rico, Mayaguez. The title is a reference to hep-th/0309149 and
introduces perturbative QCD and its application to jet substructure from a
bottom-up perspective based on the approximation of QCD as a weakly-coupled,
conformal field theory. Using this approach, a simple derivation of the Sudakov
form factor with soft gluon emission modeled as a Poisson process is presented.
Topics of the identification and discrimination of quark- versus
gluon-initiated jets and jet grooming are also discussed.Comment: 16 pages, 18 figures. Comments welcome!, v2: updated to include both
lectures from the 2018 CTEQ schoo
Deep short-read sequencing of chromosome 17 from the mouse strains A/J and CAST/Ei identifies significant germline variation and candidate genes that regulate liver triglyceride levels
Methods for accurate identification of nucleotide and structural variation using de novo short read sequencing of mouse chromosomes are described
Overlapping Agencies: The Collision of Cancer, Consumers, and Corporations in Richard Powers’s Gain
Richard Powers\u27s 1998 novel Gain establishes a complicated relationship between its two main characters, a corporation called Clare International and suburban mom named Laura Bodey. Readers, assuming the malignity of such corporations, mistake the hints Laura encounters that Clare is responsible for her ovarian cancer for facts. Such readings overlook the science of ovarian cancer as well as how Powers depicts Laura\u27s relation to her disease. I analyze Laura\u27s understudied half of the novel, framing it as a cancer narrative that reworks conventions of that genre. In placing her cancer in broad social and environmental contexts, Powers eschews the individualist strain that characterizes many illness narratives. In so doing, the novel demands engagement with consumer agency and bodily frailty in the face of corporate dominance
Molecular Diagnosis of Primary Mediastinal B Cell Lymphoma Identifies a Clinically Favorable Subgroup of Diffuse Large B Cell Lymphoma Related to Hodgkin Lymphoma
Using current diagnostic criteria, primary mediastinal B cell lymphoma (PMBL) cannot be distinguished from other types of diffuse large B cell lymphoma (DLBCL) reliably. We used gene expression profiling to develop a more precise molecular diagnosis of PMBL. PMBL patients were considerably younger than other DLBCL patients, and their lymphomas frequently involved other thoracic structures but not extrathoracic sites typical of other DLBCLs. PMBL patients had a relatively favorable clinical outcome, with a 5-yr survival rate of 64% compared with 46% for other DLBCL patients. Gene expression profiling strongly supported a relationship between PMBL and Hodgkin lymphoma: over one third of the genes that were more highly expressed in PMBL than in other DLBCLs were also characteristically expressed in Hodgkin lymphoma cells. PDL2, which encodes a regulator of T cell activation, was the gene that best discriminated PMBL from other DLBCLs and was also highly expressed in Hodgkin lymphoma cells. The genomic loci for PDL2 and several neighboring genes were amplified in over half of the PMBLs and in Hodgkin lymphoma cell lines. The molecular diagnosis of PMBL should significantly aid in the development of therapies tailored to this clinically and pathogenetically distinctive subgroup of DLBCL
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