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Search Results: 1 - 10 of 1860 matches for " Marij Eli?ns "
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The effectiveness of video interaction guidance in parents of premature infants: A multicenter randomised controlled trial
Anneke Tooten, Hannah N Hoffenkamp, Ruby AS Hall, Frans Winkel, Marij Elins, Ad JJM Vingerhoets, Hedwig JA van Bakel
BMC Pediatrics , 2012, DOI: 10.1186/1471-2431-12-76
Abstract: This study is a multi-center randomised controlled trial to evaluate the effectiveness of Video Interaction Guidance in parents of premature infants. In this study 210 newborn infants with their parents will be included: n?=?70 healthy term infants (>37?weeks GA), n?=?70 moderate term infants (32–37?weeks GA) which are recruited from maternity wards of 6 general hospitals and n?=?70 extremely preterm infants or very low birth weight infants (<32?weeks GA) recruited by the NICU of 2 specialized hospitals. The participating families will be divided into 3 groups: a reference group (i.e. full term infants and their parents, receiving care as usual), a control group (i.e. premature infants and their parents, receiving care as usual) and an intervention group (i.e. premature infants and their parents, receiving VIG). The data will be collected during the first six months after birth using observations of parent-infant interactions, questionnaires and semi-structured interviews. Primary outcomes are the quality of parental bonding and parent-infant interactive behaviour. Parental secondary outcomes are (posttraumatic) stress symptoms, depression, anxiety and feelings of anger and hostility. Infant secondary outcomes are behavioral aspects such as crying, eating, and sleeping.This is the first prospective study to empirically evaluate the effect of VIG in parents of premature infants. Family recruitment is expected to be completed in January 2012. First results should be available by 2012.NTR3423Each year, 2% to 9% of the newborns require specialised care in neonatal intensive care units (NICU). The majority are premature infants (born before 37?weeks of gestational age) who weigh less than 2500?g at birth. Modern medical technology has forced back the frontiers of viability so that a growing number of babies, even as young as 23 to 24?weeks gestation with weights as low as 500 gram, are currently surviving [1]. With the improved survival chance of preterm infants, there i
Diagrammatics for Bose condensation in anyon theories
I. S. Elins,J. C. Romers,F. A. Bais
Physics , 2013, DOI: 10.1103/PhysRevB.90.195130
Abstract: Phase transitions in anyon models in (2+1)-dimensions can be driven by condensation of bosonic particle sectors. We study such condensates in a diagrammatic language and explicitly establish the relation between the states in the fusion spaces of the theory with the condensate, to the states in the parent theory using a new set of mathematical quantities called vertex lifting coefficients (VLCs). These allow one to calculate the full set of topological data ($S$-, $T$-, $R$- and $F$-matrices) in the condensed phase. We provide closed form expressions of the topological data in terms of the VLCs and provide a method by which one can calculate the VLCs for a wide class of bosonic condensates. We furthermore furnish a concrete recipe to lift arbitrary diagrams directly from the condensed phase to the original phase, such that they can be evaluated using the data of the original theory and a limited number of VLCs. Some representative examples are worked out in detail.
Split Fermi seas in one-dimensional Bose fluids
T. Fokkema,I. S. Elins,J. -S. Caux
Physics , 2014, DOI: 10.1103/PhysRevA.89.033637
Abstract: For the one-dimensional repulsive Bose gas (Lieb-Liniger model), we study a special class of highly-excited states obtained by giving a finite momentum to subgroups of particles. These states, which correspond to `splitting' the ground state Fermi sea-like quantum number configuration, are zero-entropy states which display interesting properties more normally associated to ground states. Using a numerically exact method based on integrability, we study these states' excitation spectrum, density correlations and momentum distribution functions. These correlations display power-law asymptotics, and are shown to be accurately described by an effective multicomponent Tomonaga-Luttinger liquid theory whose parameters are obtained from Bethe Ansatz. The non-universal correlation prefactors are moreover obtained from integrability, yielding a completely parameter-free fit of the correlator asymptotics.
Separation of Timescales in a Quantum Newton's Cradle
R. van den Berg,B. Wouters,S. Elins,J. De Nardis,R. M. Konik,J. -S. Caux
Physics , 2015,
Abstract: For strongly repulsive bosons in one dimension, we provide detailed modeling of the Bragg pulse used in quantum Newton's cradle-like settings or in Bragg spectroscopy experiments. By employing the Fermi-Bose mapping for a finite harmonically trapped gas and the Quench Action approach for a thermodynamic system on a ring, we reconstruct the exact post-pulse many-body time evolution of Lieb-Liniger gases in the Tonks-Girardeau limit, together with their changing local density profile and momentum distribution. Our results display a clear separation of timescales between rapid and trap-insensitive relaxation immediately after the pulse, followed by slow in-trap periodic behaviour.
CAS-Based Approach for Automatic Data Integration  [PDF]
Eli Rohn
American Journal of Operations Research (AJOR) , 2013, DOI: 10.4236/ajor.2013.31A017
Abstract:

Research of automatic integration of structured and semi-structured data has not resulted in success over the past fifty years. No theory of data integration exists. It is unknown what the theoretical necessary requirements are, to fully support automatic data integration from autonomous heterogeneous data sources. Therefore, it is not possible to objectively evaluate if and how much new algorithms, techniques, and specifically Data Definition Languages, move towards meeting such theoretical requirements. To overcome the serious reverse salient the field and industry are in, it will be helpful if a data integration theory would be developed. This article proposes a new look at data integration by using complex adaptive systems principles to analyze current shortcomings and propose a direction that may lead to a data integration theory.

Autonomous Data Exchange: The Malady and a Possible Path to Its Cure  [PDF]
Eli Rohn
Intelligent Information Management (IIM) , 2015, DOI: 10.4236/iim.2015.71003
Abstract: Data exchange is a goal-oriented social communications system implemented through computerized technology. Data definition languages (DDLs) provide the syntax for communicating within and between organizations, illocutionary acts, such as informing, ordering and warning. Data exchange results in meaning-preserving mapping between an ensemble (a constrained variety) and its external (unconstrained) variety. Research on unsupervised structured and semi-structured data exchange has not produced any significant successes over the past fifty years. As a step towards finding a solution, this article proposes a new look at data exchange by using the principles of complex adaptive systems (CAS) to analyze current shortcomings and to propose a direction that may indeed lead to workable and mathematically grounded solution. Three CAS attributes key to this research are variety, tension and entropy. We use them to show that older and contemporary DDLs are identical in their core, thus explaining why even XML and Ontologies have failed to a create fully automated data exchange mechanism. Then we show that it is possible to construct a radically different DDL that overcomes existing data exchange limitations—its variety, tension and entropy are different from existing solutions. The article has these major parts: definition of key CAS attributes; quantitative examination of representative old and new DDLs using these attributes; presentation of the results and their pessimistic ramification; a section that proposes a new theoretical way to construct DDLs that is based entirely on CAS principles, thus enabling unsupervised data exchange. The theory is then tested, showing very promising results.
Frequency and source of chromosome abnormalities in chick embryos
NS Fechheimer
Genetics Selection Evolution , 1977, DOI: 10.1186/1297-9686-9-4-541
Abstract:
Cytogenetic considerations in animal breeding
NS Fechheimer
Genetics Selection Evolution , 1971, DOI: 10.1186/1297-9686-3-1-43
Abstract:
Application of Geographic Information System in Assessing Land use Changes In Kubwa, FCT Abuja
NS Daruwana
Information Manager (The) , 2011,
Abstract: This study looked at the application of geographic information system in assessing land use changes in Kubwa, FCT from 1987-1997. Structured questionnaire was distributed to 300 willing respondents using the systematic sampling technique. Using geographic information system, the changes were also mapped, simple descriptive statistics, Chisquare and T-test were also employed to validate the findings and the result showed that rural/agrarians land use changed dramatically from rural residential area which occupied
Masquelet’s Technique for Management of Long Bone Defects: From Experiment to Clinical Application
NS Motsitsi
East and Central African Journal of Surgery , 2012,
Abstract: Bone defect, of whatever cause, is clinically challenging to treat. Defects of up to 4.0 cm can be successfully treated with cancellous bone grafting. Large defects require more complex alternatives like, bone transport, vascularized bone grafting, allografts or fibular pro-tibia grafting. There are advantages and disadvantages to these techniques and patient’s cooperation is critical for successful outcome. None of these treatment options are reliably successful. The Masquelet’s technique is a viable option in the management of large defects. It is based on two principal steps: the formation of induction membrane and cancellous bone grafting. Defects as large as 25 cm can be successfully treated with this technique. The induction membrane is a viable tissue that plays a role in bone formation or incorporation. It has been demonstrated experimentally that the membrane contains elements that are important in bone formation and vascularization of cancellous bone placed inside the induction membrane. Research in still needed on this membrane in human subjects. Clinically the Masque let technique has been shown to be successful. The originator of the technique has the largest series to date plus the longest follow-up. Other clinicians have also shared their experience using the technique. Clinically more cases need to reported and guidelines established.
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