1,502 research outputs found
The state-as-parent: reframing parent-child relations in Rwanda
This article attempts to think across and beyond the fields of childhood studies and parenting culture studies by employing postcolonial, relational and temporal lenses to explore childâparentâstate relations and how these relations have been constructed, represented and enacted over time. Using the case study of Rwanda, we suggest that the phenomenon of state-as-parent functions symbolically and instrumentally to establish state legitimacy and national unity in the aftermath of the 1994 Genocide Against the Tutsi, informed by both the specificities of the Rwandan historical and current contexts, as well as transnational discourses on childhood and parenting. Furthermore, we argue that plural, coexisting and conflicting temporalities are at play in the reframing and reworking of stateâparentâchild relations, which are also a site for the generation of subaltern forms of temporality to contest the overarching narrative of state-as-parent
Water rights, conflict and policy: Proceedings of a workshop held in Kathmandu, Nepal, January 22-24, 1996
IrrigationIrrigation managementWater rightsWater lawConflictFarmers' associations
Secundaire arbeidsvoorwaarden en geluk
Hoe verhouden secundaire arbeidsvoorwaarden zich tot geluk? Om deze vraag te be-antwoorden is gebruik gemaakt van de Loonwijzer-webenquĂȘte (n=14.304). Uit deanalyse blijkt dat een secundaire arbeidsvoorwaarde, na gecontroleerd te zijn voor primaire arbeidsvoorwaarden, alleen voor de laptop/pc- thuisregeling en voor trainingeen positief verband met geluk laten zien. Secundaire arbeidsvoorwaarden in gesommeerde vorm hebben alleen een positief effect op geluk wanneer de toenameabsoluut is, maar niet wanneer de toename relatief is ten opzichte van anderen
Test Station for a 30 m long Superconducting Link
The Large Hadron Collider (LHC) requires distribution of high electrical currents in the limited space of LHC tunnel. Four superconducting links of about 76 m length and one of 510 m will be installed in the tunnel to carry 6ĂÂ kA and 600 A. For validation of the longest link a test station was designed which is presently under construction. The design will permit the test station to be adapted for other links and/or cables as well. It will operate either in pool boiling mode, in order to measure thermal loads, or in forced super-critical helium flow mode to simulate real operation. Inlet pressure is 1.2 bar to 3 bar. Inlet temperature is adjustable from 4.4 K up to about 20 K. The station is being prepared to validate the LHC model link, consisting of 48 superconducting cables, each operating at 600 A between 4.5 K and 5.4 K. This article describes features of the equipment
Molecular Screening for Terahertz Detection with Machine-Learning-Based Methods
The molecular requirements are explored for achieving efficient signal up-conversion in a recently
developed technique for terahertz (THz) detection based on molecular optomechanics. We discuss which
molecular and spectroscopic properties are most important for predicting efficient THz detection and
outline a computational approach based on quantum-chemistry and machine-learning methods for
calculating these properties. We validate this approach by bulk and surface-enhanced Raman scattering
and infrared absorption measurements. We develop a virtual screening methodology performed on
databases of millions of commercially available compounds. Quantum-chemistry calculations for about
3000 compounds are complemented by machine-learning methods to predict applicability of 93 000
organic molecules for detection. Training is performed on vibrational spectroscopic properties based on
absorption and Raman scattering intensities. Our top molecules have conversion intensity two orders of
magnitude higher than an average molecule from the database. We also discuss how other properties like
molecular shape and self-assembling properties influence the detection efficiency. We identify molecular
moieties whose presence in the molecules indicates high activity for THz detection and show an example
where a simple modification of a frequently used self-assembling compound can enhance activity 85-fold.
The capabilities of our screening method are demonstrated on narrow-band and broadband detection
examples, and its possible applications in surface-enhanced spectroscopy are also discussed
A logic road from special relativity to general relativity
We present a streamlined axiom system of special relativity in first-order
logic. From this axiom system we "derive" an axiom system of general relativity
in two natural steps. We will also see how the axioms of special relativity
transform into those of general relativity. This way we hope to make general
relativity more accessible for the non-specialist
Interactions between vaccinia virus and sensitized macrophages in vitro
The action of peritoneal exudate cells (PEC) from normal and vaccinia virus infected mice on infectious vaccinia virus particles was investigatedin vitro. PEC from immune mice showed a significantly higher infectivity titre reduction (virus clearance, VC) than normal cells. This effect could be clearly attributed to the macrophage. Vaccinia virus multiplied in PEC from normal animals while there was no virus propagation in cells from immunized mice. The release of adsorbed or engulfed virus was reduced significantly in PEC from immunized animals. Anti-vaccinia-antibodies seem to activate normal macrophages to increased virus clearance. This stimulating effect was demonstrable only in the IgG fraction of the antiserum.
The activity of macrophages from mice injected three times over a period of 14 days with vaccinia virus could be entirely blocked with anti-mouse-IgG, while PEC from mice injected one time six days previously were not inhibited
Direct and indirect methods for the quantification of leg volume: Comparison between water displacement volumetry, the disk model method and the frustum sign model method, using the correlation coefficient and the limits of agreement
Volume changes can be measured either directly by water-displacement volumetry or by various indirect methods in which calculation of the volume is based on circumference measurements. The aim of the present study was to determine the most appropriate indirect method for lower leg volume calculation using water displacement volumetry as a âgolden standardâ. For 20 male volunteers, age range: 20â35 years, the volume of both lower legs was determined directly by water-displacement volumetry, and indirectly by the frustum sign model method and the disc model method. Calculation of the correlation coefficient and the limits of agreement showed that water-displacement volumetry and the disc model method are interchangeable (r = + 0.99, mean ± 2s = â 45 ± 78 ml), whereas this does not hold for the frustum sign model (r = + 0.93, mean ± 2s = 521 ± 238 ml). In the clinical situation volume measurement can be valuable for monitoring of the severity of oedema or haematoma occurrence after surgery or severe trauma. This non-invasive diagnostic aid may be a valuable adjuvant means of diagnosis for several volume dependent disorders of the extremities
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