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https://www.readbyqxmd.com/read/28214046/productivity-growth-case-mix-and-optimal-size-of-hospitals-a-16-year-study-of-the-norwegian-hospital-sector
#1
Kjartan Sarheim Anthun, Sverre Andreas Campbell Kittelsen, Jon Magnussen
BACKGROUND AND OBJECTIVES: This paper analyses productivity growth in the Norwegian hospital sector over a period of 16 years, 1999-2014. This period was characterized by a large ownership reform with subsequent hospital reorganizations and mergers. We describe how technological change, technical productivity, scale efficiency and the estimated optimal size of hospitals have evolved during this period. MATERIAL AND METHODS: Hospital admissions were grouped into diagnosis-related groups using a fixed-grouper logic...
January 30, 2017: Health Policy
https://www.readbyqxmd.com/read/28213083/-health-promotion-and-logic-models
#2
Cecile Marie Dupin
The first phase of interventional research in the health of populations is the development of its conceptual basis. Programme logic models are used to describe the way in which the results should be generated. The programme theory is used to develop intermediary objectives and to increase the chances of success of public health actions. This approach requires the coproduction of knowledge between researchers and partners. The teams can benefit from the application of evaluation to the theory in order to clarify the results obtained...
January 2017: Soins; la Revue de Référence Infirmière
https://www.readbyqxmd.com/read/28212422/probability-matching-in-perceptrons-effects-of-conditional-dependence-and-linear-nonseparability
#3
Michael R W Dawson, Maya Gupta
Probability matching occurs when the behavior of an agent matches the likelihood of occurrence of events in the agent's environment. For instance, when artificial neural networks match probability, the activity in their output unit equals the past probability of reward in the presence of a stimulus. Our previous research demonstrated that simple artificial neural networks (perceptrons, which consist of a set of input units directly connected to a single output unit) learn to match probability when presented different cues in isolation...
2017: PloS One
https://www.readbyqxmd.com/read/28212000/radiation-hard-complementary-integrated-circuits-based-on-semiconducting-single-walled-carbon-nanotubes
#4
Julian J McMorrow, Cory D Cress, William A Gaviria Rojas, Michael L Geier, Tobin J Marks, Mark C Hersam
Increasingly complex demonstrations of integrated circuit elements based on semiconducting single-walled carbon nanotubes (SWCNTs) mark the maturation of this technology for use in next-generation electronics. In particular, organic materials have recently been leveraged as dopant and encapsulation layers to enable stable SWCNT-based rail-to-rail, low-power complementary metal-oxide-semiconductor (CMOS) logic circuits. To explore the limits of this technology in extreme environments, here we study total ionizing dose (TID) effects in enhancement-mode SWCNT-CMOS inverters that employ organic doping and encapsulation layers...
February 17, 2017: ACS Nano
https://www.readbyqxmd.com/read/28211693/a-probabilistic-finite-state-logic-machine-realized-experimentally-on-a-single-dopant-atom
#5
Barbara Fresch, Juanita Bocquel, Sven Rogge, Raphael D Levine, Francoise Remacle
Exploiting the potential of nanoscale devices for logic processing requires the implementation of computing functionalities departing from the conventional switching paradigm. We report on the design and the experimental realisation of a probabilistic finite state machine in a single phosphorus donor atom placed in a silicon matrix electrically addressed and probed by Scanning Tunnelling Spectroscopy (STS). The single atom logic unit simulates the flow of visitors in a maze whose topology is determined by the dynamics of the electronic transport through the states of the dopant...
February 17, 2017: Nano Letters
https://www.readbyqxmd.com/read/28211594/substance-dependence-among-those-without-symptoms-of-substance-abuse-in-the-world-mental-health-survey
#6
Luise Lago, Meyer D Glantz, Ronald C Kessler, Nancy A Sampson, Ali Al-Hamzawi, Silvia Florescu, Jacek Moskalewicz, Sam Murphy, Fernando Navarro-Mateu, Yolanda Torres de Galvis, Maria Carmen Viana, Miguel Xavier, Louisa Degenhardt
The World Health Organization (WHO) World Mental Health (WMH) Survey Initiative uses the Composite International Diagnostic Interview (CIDI). The first 13 surveys only assessed substance dependence among respondents with a history of substance abuse; later surveys also assessed substance dependence without symptoms of abuse. We compared results across the two sets of surveys to assess implications of the revised logic and develop an imputation model for missing values of lifetime dependence in the earlier surveys...
February 17, 2017: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/28211541/antibody-controlled-actuation-of-dna-based-molecular-circuits
#7
Wouter Engelen, Lenny H H Meijer, Bram Somers, Tom F A de Greef, Maarten Merkx
DNA-based molecular circuits allow autonomous signal processing, but their actuation has relied mostly on RNA/DNA-based inputs, limiting their application in synthetic biology, biomedicine and molecular diagnostics. Here we introduce a generic method to translate the presence of an antibody into a unique DNA strand, enabling the use of antibodies as specific inputs for DNA-based molecular computing. Our approach, antibody-templated strand exchange (ATSE), uses the characteristic bivalent architecture of antibodies to promote DNA-strand exchange reactions both thermodynamically and kinetically...
February 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28209428/an-artificial-intelligence-based-improved-classification-of-two-phase-flow-patterns-with-feature-extracted-from-acquired-images
#8
C Shanthi, N Pappa
Flow pattern recognition is necessary to select design equations for finding operating details of the process and to perform computational simulations. Visual image processing can be used to automate the interpretation of patterns in two-phase flow. In this paper, an attempt has been made to improve the classification accuracy of the flow pattern of gas/ liquid two- phase flow using fuzzy logic and Support Vector Machine (SVM) with Principal Component Analysis (PCA). The videos of six different types of flow patterns namely, annular flow, bubble flow, churn flow, plug flow, slug flow and stratified flow are recorded for a period and converted to 2D images for processing...
February 13, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28209158/gene-regulatory-network-underlying-the-immortalization-of-epithelial-cells
#9
Luis Fernando Méndez-López, Jose Davila-Velderrain, Elisa Domínguez-Hüttinger, Christian Enríquez-Olguín, Juan Carlos Martínez-García, Elena R Alvarez-Buylla
BACKGROUND: Tumorigenic transformation of human epithelial cells in vitro has been described experimentally as the potential result of spontaneous immortalization. This process is characterized by a series of cell-state transitions, in which normal epithelial cells acquire first a senescent state which is later surpassed to attain a mesenchymal stem-like phenotype with a potentially tumorigenic behavior. In this paper we aim to provide a system-level mechanistic explanation to the emergence of these cell types, and to the time-ordered transition patterns that are common to neoplasias of epithelial origin...
February 16, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/28208635/advances-in-non-viral-dna-vectors-for-gene-therapy
#10
Cinnamon L Hardee, Lirio Milenka Arévalo-Soliz, Benjamin D Hornstein, Lynn Zechiedrich
Uses of viral vectors have thus far eclipsed uses of non-viral vectors for gene therapy delivery in the clinic. Viral vectors, however, have certain issues involving genome integration, the inability to be delivered repeatedly, and possible host rejection. Fortunately, development of non-viral DNA vectors has progressed steadily, especially in plasmid vector length reduction, now allowing these tools to fill in specifically where viral or other non-viral vectors may not be the best options. In this review, we examine the improvements made to non-viral DNA gene therapy vectors, highlight opportunities for their further development, address therapeutic needs for which their use is the logical choice, and discuss their future expansion into the clinic...
February 10, 2017: Genes
https://www.readbyqxmd.com/read/28208631/a-novel-strain-based-method-to-estimate-tire-conditions-using-fuzzy-logic-for-intelligent-tires
#11
Daniel Garcia-Pozuelo, Oluremi Olatunbosun, Jorge Yunta, Xiaoguang Yang, Vicente Diaz
The so-called intelligent tires are one of the most promising research fields for automotive engineers. These tires are equipped with sensors which provide information about vehicle dynamics. Up to now, the commercial intelligent tires only provide information about inflation pressure and their contribution to stability control systems is currently very limited. Nowadays one of the major problems for intelligent tire development is how to embed feasible and low cost sensors to obtain reliable information such as inflation pressure, vertical load or rolling speed...
February 10, 2017: Sensors
https://www.readbyqxmd.com/read/28208392/physics-of-negative-absolute-temperatures
#12
Eitan Abraham, Oliver Penrose
Negative absolute temperatures were introduced into experimental physics by Purcell and Pound, who successfully applied this concept to nuclear spins; nevertheless, the concept has proved controversial: a recent article aroused considerable interest by its claim, based on a classical entropy formula (the "volume entropy") due to Gibbs, that negative temperatures violated basic principles of statistical thermodynamics. Here we give a thermodynamic analysis that confirms the negative-temperature interpretation of the Purcell-Pound experiments...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208098/-don-t-think-i-m-going-to-leave-you-over-it-accounts-of-changing-hepatitis-c-status-among-couples-who-inject-drugs
#13
Jake Rance, Carla Treloar, Suzanne Fraser, Joanne Bryant, Tim Rhodes
BACKGROUND: While the health-related benefits of intimate partnership are well documented, little attention has been paid to couples exposed to high levels of social stigma and exclusion. In this project we investigated an important site of stigma for partnerships by collecting accounts of changing hepatitis C (HCV) status ("sero-change") among couples that inject drugs. We explored what these accounts reveal about the meaning of HCV for these couples, and how this understanding contributes to our collective efforts at prevention and care...
January 31, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28206834/study-of-the-levels-of-human-human-and-human-animal-empathy-in-veterinary-medical-students-from-chile
#14
Javiera Calderón-Amor, Daniela Luna-Fernández, Tamara Tadich
Social relationships are based on our ability to put ourselves in the place of others, and from there to react appropriately and logically. This empathic ability can be extended to other species, based on the human ability to develop techniques to understand and communicate with animals. In education, the benefits of training professionals with ethical and empathic tools are known. Gender, diet, past experiences, and other factors can modify a person's levels of empathy toward humans and animals, and a relationship exists between both types of empathy...
2017: Journal of Veterinary Medical Education
https://www.readbyqxmd.com/read/28202806/signals-cues-and-the-nature-of-mimicry
#15
REVIEW
Gabriel A Jamie
'Mimicry' is used in the evolutionary and ecological literature to describe diverse phenomena. Many are textbook examples of natural selection's power to produce stunning adaptations. However, there remains a lack of clarity over how mimetic resemblances are conceptually related to each other. The result is that categories denoting the traditional subdivisions of mimicry are applied inconsistently across studies, hindering attempts at conceptual unification. This review critically examines the logic by which mimicry can be conceptually organized and analysed...
February 22, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28202588/control-and-regulation-of-pathways-via-negative-feedback
#16
REVIEW
Herbert M Sauro
The biochemical networks found in living organisms include a huge variety of control mechanisms at multiple levels of organization. While the mechanistic and molecular details of many of these control mechanisms are understood, their exact role in driving cellular behaviour is not. For example, yeast glycolysis has been studied for almost 80 years but it is only recently that we have come to understand the systemic role of the multitude of feedback and feed-forward controls that exist in this pathway. In this article, control theory is discussed as an approach to dissect the control logic of complex pathways...
February 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28202321/anxiety-and-depression-among-sexual-minority-women-and-men-in-sweden-is-the-risk-equally-spread-within-the-sexual-minority-population
#17
Charlotte Björkenstam, Emma Björkenstam, Gunnar Andersson, Susan Cochran, Kyriaki Kosidou
INTRODUCTION: Sexual minority individuals have a higher risk of anxiety and depression compared with heterosexuals. However, whether the higher risk is spread equally across the sexual minority population is not clear. AIM: To investigate the association between sexual orientation and self-reported current anxiety and a history of diagnosis of depression, paying particular attention to possible subgroup differences in risks within the sexual minority population, stratified by sex and to examine participants' history of medical care for anxiety disorders and depression...
February 12, 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28202023/logical-fallacies-in-animal-model-research
#18
REVIEW
Espen A Sjoberg
BACKGROUND: Animal models of human behavioural deficits involve conducting experiments on animals with the hope of gaining new knowledge that can be applied to humans. This paper aims to address risks, biases, and fallacies associated with drawing conclusions when conducting experiments on animals, with focus on animal models of mental illness. CONCLUSIONS: Researchers using animal models are susceptible to a fallacy known as false analogy, where inferences based on assumptions of similarities between animals and humans can potentially lead to an incorrect conclusion...
February 15, 2017: Behavioral and Brain Functions: BBF
https://www.readbyqxmd.com/read/28196950/what-is-the-relationship-between-age-and-deprivation-in-influencing-emergency-hospital-admissions-a-model-using-data-from-a-defined-comprehensive-all-age-cohort-in-east-devon-uk
#19
Denis Pereira Gray, William Henley, Todd Chenore, Kate Sidaway-Lee, Philip Evans
OBJECTIVES: To clarify the relationship between social deprivation and age as two factors associated with emergency admissions to hospital. DESIGN: Emergency admissions for 12 months were analysed for patients in the NHS NEW Devon CCG. Social deprivation was measured by the Index of Multiple Deprivation (IMD). Logistic regression models estimated the separate and combined effects of social deprivation and age on the risk of emergency admissions for people aged under and over 65...
February 14, 2017: BMJ Open
https://www.readbyqxmd.com/read/28194673/assessment-of-groundwater-vulnerability-using-supervised-committee-to-combine-fuzzy-logic-models
#20
Ata Allah Nadiri, Maryam Gharekhani, Rahman Khatibi, Asghar Asghari Moghaddam
Vulnerability indices of an aquifer assessed by different fuzzy logic (FL) models often give rise to differing values with no theoretical or empirical basis to establish a validated baseline or to develop a comparison basis between the modeling results and baselines, if any. Therefore, this research presents a supervised committee fuzzy logic (SCFL) method, which uses artificial neural networks to overarch and combine a selection of FL models. The indices are expressed by the widely used DRASTIC framework, which include geological, hydrological, and hydrogeological parameters often subject to uncertainty...
February 13, 2017: Environmental Science and Pollution Research International
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