keyword
MENU ▼
Read by QxMD icon Read
search

Theory of constraints

keyword
https://www.readbyqxmd.com/read/29334324/the-rite-of-passage-of-becoming-a-humanitarian-health-worker-experiences-of-retention-in-sweden
#1
Sara Albuquerque, Anneli Eriksson, Helle M Alvesson
BACKGROUND: Low retention of humanitarian workers poses constraints on humanitarian organisations' capacity to respond effectively to disasters. Research has focused on reasons for humanitarian workers leaving the sector, but little is known about the factors that can elucidate long-term commitment. OBJECTIVE: To understand what motivates and supports experienced humanitarian health workers to remain in the sector. METHODS: Semi-structured interviews were conducted with 10 experienced nurses who had been on at least three field missions with Médecins Sans Frontières Sweden...
2018: Global Health Action
https://www.readbyqxmd.com/read/29330440/evidence-of-s-wave-superconductivity-in-the-noncentrosymmetric-la7ir3
#2
B Li, C Q Xu, W Zhou, W H Jiao, R Sankar, F M Zhang, H H Hou, X F Jiang, B Qian, B Chen, A F Bangura, Xiaofeng Xu
Superconductivity in noncentrosymmetric compounds has attracted sustained interest in the last decades. Here we present a detailed study on the transport, thermodynamic properties and the band structure of the noncentrosymmetric superconductor La 7 Ir 3 (T c  ~ 2.3 K) that was recently proposed to break the time-reversal symmetry. It is found that La7Ir3 displays a moderately large electronic heat capacity (Sommerfeld coefficient γ n  ~ 53.1 mJ/mol K2) and a significantly enhanced Kadowaki-Woods ratio (KWR ~32 μΩ cm mol2 K2 J-2) that is greater than the typical value (~10 μΩ cm mol2 K2 J-2) for strongly correlated electron systems...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29328702/peeling-off-neutron-skins-from-neutron-rich-nuclei-constraints-on-the-symmetry-energy-from-neutron-removal-cross-sections
#3
T Aumann, C A Bertulani, F Schindler, S Typel
An experimentally constrained equation of state of neutron-rich matter is fundamental for the physics of nuclei and the astrophysics of neutron stars, mergers, core-collapse supernova explosions, and the synthesis of heavy elements. To this end, we investigate the potential of constraining the density dependence of the symmetry energy close to saturation density through measurements of neutron-removal cross sections in high-energy nuclear collisions of 0.4 to 1 GeV/nucleon. We show that the sensitivity of the total neutron-removal cross section is high enough so that the required accuracy can be reached experimentally with the recent developments of new detection techniques...
December 29, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29326003/the-efficacy-of-infection-prevention-and-control-committees-in-lesotho-a-qualitative-study
#4
Eltony Mugomeri
BACKGROUND: The implementation of the core components of infection prevention and control (IPC) recommended by the World Health Organization faces severe challenges, particularly in developing countries. Given that hospital IPC committees in these countries are the key implementers of IPC, there is a need to evaluate their effectiveness. This study qualitatively evaluated the effectiveness of IPC committees in the southern African country of Lesotho with the aim of identifying themes for policy discourse on improving IPC practice in the country...
January 9, 2018: American Journal of Infection Control
https://www.readbyqxmd.com/read/29324559/nurse-experiences-of-medication-administration-to-people-with-swallowing-difficulties-living-in-aged-care-facilities-a-systematic-review-of-qualitative-evidence
#5
Aida Sefidani Forough, Simon Y M Wong, Esther T L Lau, Jose Manuel Serrano Santos, Greg J Kyle, Kathryn J Steadman, Julie A Y Cichero, Lisa M Nissen
OBJECTIVE: To identify nurses' experiences of administering oral medications to residents of aged care facilities (ACFs) with swallowing difficulties. INTRODUCTION: Administering medicines to older people with swallowing difficulties is a challenging task. Nurses frequently modify oral medications e.g. by crushing/splitting tablets or opening capsules, to facilitate the administration process. These practices are associated with an increased risk of medication administration errors...
January 2018: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/29323122/effect-of-rhythmic-auditory-cueing-on-parkinsonian-gait-a-systematic-review-and-meta-analysis
#6
Shashank Ghai, Ishan Ghai, Gerd Schmitz, Alfred O Effenberg
The use of rhythmic auditory cueing to enhance gait performance in parkinsonian patients' is an emerging area of interest. Different theories and underlying neurophysiological mechanisms have been suggested for ascertaining the enhancement in motor performance. However, a consensus as to its effects based on characteristics of effective stimuli, and training dosage is still not reached. A systematic review and meta-analysis was carried out to analyze the effects of different auditory feedbacks on gait and postural performance in patients affected by Parkinson's disease...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29317024/the-effect-of-constraints-on-the-analytical-figures-of-merit-achieved-by-extended-multivariate-curve-resolution-alternating-least-squares
#7
Rocío B Pellegrino Vidal, Franco Allegrini, Alejandro C Olivieri
Multivariate curve resolution-alternating least-squares (MCR-ALS) is the model of choice when dealing with some non-trilinear arrays, specifically when the data are of chromatographic origin. To drive the iterative procedure to chemically interpretable solutions, the use of constraints becomes essential. In this work, both simulated and experimental data have been analyzed by MCR-ALS, applying chemically reasonable constraints, and investigating the relationship between selectivity, analytical sensitivity (γ) and root mean square error of prediction (RMSEP)...
March 20, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29316848/integrated-wearable-and-self-carrying-active-upper-limb-orthosis
#8
Roberto Merchant, David Cruz-Ortiz, Mariana Ballesteros-Escamilla, Isaac Chairez
The aim of this study was to develop a prototype of an orthotic system that can be used as a support tool in the rehabilitation of the upper limb. The construction of this device was motivated by the increasing number of subjects suffering from full or partial loss of the upper limb function as a consequence of spinal cord injuries, strokes, occupational syndromes and sports injuries. The majority of procedures used in upper limb rehabilitation consist of repetitive movements enforced by physiotherapists; a robotic device executing the same tasks seems to be a plausible solution if the orthosis can be programmed and controlled automatically...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29314172/shifting-mindsets-a-realist-synthesis-of-evidence-from-self-management-support-training
#9
REVIEW
Freya Davies, Fiona Wood, Alison Bullock, Carolyn Wallace, Adrian Edwards
CONTEXT: Accompanying the growing expectation of patient self-management is the need to ensure health care professionals (HCPs) have the required attitudes and skills to provide effective self-management support (SMS). Results from existing training interventions for HCPs in SMS have been mixed and the evidence base is weaker for certain settings, including supporting people with progressive neurological conditions (PNCs). We set out to understand how training operates, and to identify barriers and facilitators to training designed to support shifts in attitudes amongst HCPs...
January 4, 2018: Medical Education
https://www.readbyqxmd.com/read/29313152/strained-zigzag-graphene-nanoribbon-devices-with-vacancies-as-perfect-spin-filters
#10
Macon Magno, Frank Hagelberg
The transport properties of zigzag graphene nanoribbons (zGNRs) were studied by density functional theory (DFT) in conjunction with Green's function analysis. In particular, spin transport through a zGNR (12,0) device was investigated under the constraint of ferromagnetic coordination of the ribbon edges. Several configurations with two vacant sites in the edge and the bulk region of the zGNR device were derived from this system. For all structures, magnetocurrent ratios (MCRs) were recorded as a function of the bias as well as the amount of strain applied longitudinally to the devices...
January 8, 2018: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/29306372/twitter-journal-clubs-and-continuing-professional-development-an-analysis-of-a-medradjclub-tweet-chat
#11
A Bolderston, J Watson, N Woznitza, A Westerink, L Di Prospero, G Currie, C Beardmore, J Hewis
INTRODUCTION: Online Twitter journal clubs are a recent and popular innovation with the potential to increase research awareness and inform practice. The medical radiation sciences' MedRadJournalClub (MJRC) is a Twitter-based event that attracts a global group of participants at the monthly chats. An analysis of a recent MedRadJournalClub discussion evaluated the perceived benefits and limitations of medical radiation practitioners participating in an online journal club. METHODS: The February 2017 chat used for analysis was based on the Journal of Medical Imaging and Radiation Sciences article by Currie et al...
February 2018: Radiography
https://www.readbyqxmd.com/read/29304857/a-qualitative-exploration-of-the-discharge-process-and-factors-predisposing-to-readmissions-to-the-intensive-care-unit
#12
Uchenna R Ofoma, Yue Dong, Ognjen Gajic, Brian W Pickering
BACKGROUND: Quantitative studies have demonstrated several factors predictive of readmissions to intensive care. Clinical decision tools, derived from these factors have failed to reduce readmission rates. The purpose of this study was to qualitatively explore the experiences and perceptions of physicians and nurses to gain more insight into intensive care readmissions. METHODS: Semi-structured interviews of intensive care unit (ICU) and general medicine care providers explored work routines, understanding and perceptions of the discharge process, and readmissions to intensive care...
January 5, 2018: BMC Health Services Research
https://www.readbyqxmd.com/read/29303333/strong-constraints-on-cosmological-gravity-from-gw170817-and-grb-170817a
#13
T Baker, E Bellini, P G Ferreira, M Lagos, J Noller, I Sawicki
The detection of an electromagnetic counterpart (GRB 170817A) to the gravitational-wave signal (GW170817) from the merger of two neutron stars opens a completely new arena for testing theories of gravity. We show that this measurement allows us to place stringent constraints on general scalar-tensor and vector-tensor theories, while allowing us to place an independent bound on the graviton mass in bimetric theories of gravity. These constraints severely reduce the viable range of cosmological models that have been proposed as alternatives to general relativistic cosmology...
December 22, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29298389/an-efficient-implementation-of-variation-after-projection-generalized-hartree-fock
#14
Patrick J Lestrange, David B Williams-Young, Carlos A Jimenez-Hoyos, Xiaosong Li
Projected Hartree-Fock (PHF) theory can restore important symmetries to broken symmetry wave functions. Variation after projection (VAP) implementations make it possible to deliberatively break and then restore a given symmetry by directly minimizing the projected energy expression. This technique can be applied to any symmetry that can be broken from relaxing constraints on single Slater determinant wave functions. For instance, generalized Hartree-Fock (GHF) wave functions are neither eigenfunctions of Sz or S2...
January 3, 2018: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/29297278/incorporating-biological-prior-knowledge-for-bayesian-learning-via-maximal-knowledge-driven-information-priors
#15
Shahin Boluki, Mohammad Shahrokh Esfahani, Xiaoning Qian, Edward R Dougherty
BACKGROUND: Phenotypic classification is problematic because small samples are ubiquitous; and, for these, use of prior knowledge is critical. If knowledge concerning the feature-label distribution - for instance, genetic pathways - is available, then it can be used in learning. Optimal Bayesian classification provides optimal classification under model uncertainty. It differs from classical Bayesian methods in which a classification model is assumed and prior distributions are placed on model parameters...
December 28, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/29295004/leaving-and-beyond-voices-of-survivors-of-domestic-violence-from-kyrgyzstan
#16
Saltanat Childress, Subadra Panchanadeswaran, Manisha Joshi
Despite the global nature of domestic violence against women, few studies have examined the phenomenon in Kyrgyzstan. This grounded theory study gives voice to survivors of domestic violence by examining women's experiences of various forms of violence and the complexities surrounding Kyrgyz women's decision making about leaving violent relationships. Findings revealed that survivors move through a three-stage process of leaving: (a) reaching a turning point, (b) implementing the leaving process, and (c) reclaiming self...
November 1, 2017: Journal of Interpersonal Violence
https://www.readbyqxmd.com/read/29287091/grammatical-verb-aspect-and-event-roles-in-sentence-processing
#17
Carol Madden-Lombardi, Peter Ford Dominey, Jocelyne Ventre-Dominey
Two experiments examine how grammatical verb aspect constrains our understanding of events. According to linguistic theory, an event described in the perfect aspect (John had opened the bottle) should evoke a mental representation of a finished event with focus on the resulting object, whereas an event described in the imperfective aspect (John was opening the bottle) should evoke a representation of the event as ongoing, including all stages of the event, and focusing all entities relevant to the ongoing action (instruments, objects, agents, locations, etc...
2017: PloS One
https://www.readbyqxmd.com/read/29286770/communication-games-reveal-preparation-contextuality
#18
Alley Hameedi, Armin Tavakoli, Breno Marques, Mohamed Bourennane
A communication game consists of distributed parties attempting to jointly complete a task with restricted communication. Such games are useful tools for studying limitations of physical theories. A theory exhibits preparation contextuality whenever its predictions cannot be explained by a preparation noncontextual model. Here, we show that communication games performed in operational theories reveal the preparation contextuality of that theory. For statistics obtained in a particular family of communication games, we show a direct correspondence with correlations in spacelike separated events obeying the no-signaling principle...
December 1, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29286741/su-5-unification-without-proton-decay
#19
Bartosz Fornal, Benjamín Grinstein
We construct a four-dimensional SU(5) grand unified theory in which the proton is stable. The standard model leptons reside in the 5 and 10 irreps of SU(5), whereas the quarks live in the 40 and 50 irreps. The SU(5) gauge symmetry is broken by the vacuum expectation values of the scalar 24 and 75 irreps. All fields that are not part of the standard model are heavy. Stability of the proton requires three relations between the parameters of the model to hold. However, abandoning the requirement of absolute proton stability, the model fulfills current experimental constraints without fine-tuning...
December 15, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/29285828/mixed-evidence-for-early-bursts-of-morphological-evolution-in-extant-clades
#20
Mark N Puttick
Macroevolutionary theory predicts high rates of evolution should occur early in a clade's history as species exploit ecological opportunity. Evidence from the fossil record has shown a high prevalence of early bursts in morphological evolution, but recent work has provided little evidence for early high rates in the evolution of extant clades. Here I test the prevalence of early bursts in extant data using phylogenetic comparative methods. Existing models are extended to allow a shift from a background Brownian motion (BM) process to an early burst process within sub-clades of phylogenies, rather than an early burst being applied to an entire phylogenetic tree...
December 29, 2017: Journal of Evolutionary Biology
keyword
keyword
66693
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"