17,673 research outputs found
Autonomy and capacity: a state-centred approach to post-communist transition in Central Europe
The paper examines state characteristics and their policy implications in five Central European post-communist countries. It argues that policies on macroeconomic stabilisation, privatisation and FDI had been shaped by state-society relations, which, in turn, had been affected by policy outcomes. Curiously, though, whereas structural and institutional developments exhibited a great deal of path-dependency in some countries, in others significant policy shifts took place. The conceptual tools of state capacity and autonomy are used to describe both dynamics, as well as to explain the spectacular variation in the role of FDI across the region
Design of Prototype Dynamic Ac Power Machine with Equivalent Circuit Modeling (Torque Speed Curve of Induction Motor 1,1, Kw)
Squirrel cage induction motors are widely used in electric motor drives due to their satisfactory mechanical characteristics (torque, current, overloading) and small dimensions, as well as their low price. When starting an induction motor, a large current is required for magnetizing its core, which results in a low power factor, rotor power losses and a temperature rise in the windings. None of these parameters should reach values beyond certain limits until the motor reaches nominal speed. The speed of an induction motor 1,1kW is affected very little by fluctuations of voltage. The greater the supply voltage of the motor, the induction motor's speed will increase. The torque values (Tstart, TSmax and Tmax) are affected by the value of the motor supply voltage: (Vp-nl : 132.8, Tstart1 : 7.4, T S-max1 : 0.4, Tmax1 : 9.9) V, (Vp-nl : 127.0, Tstart2 : 4.8, T S-max1 : 0.3, Tmax1 : 8.4) V and (Vp-nl : 121.3, Tstart3 : 3.3, T S-max3 : 0.2, Tmax3 : 7.1) V. Stator current (IL-nl ; 2.5, 2.2, 1.9 ) Amp rises gradually on account of the increase in magnetising current (Im : 2.5, 2.2, 1.9) Amp. The magnetising current required to produce the stator flux. The component of the stator current which provides the ampere-turns balancing the rotor ampere-turns will steadily diminish as the rotor current (IL-nl) decrease with the increase in rotor speed (nr). 
Perivascular stem cells diminish muscle atrophy following massive rotator cuff tears in a small animal model
Building capacity for advancing child protection in Mali
UNICEF is the UN worldwide agency committed to promote children’s rights across countries. Such a mandate is particularly significant in African countries like Mali where children under the age of 18 make up 50% of the population and who experience widespread violation of rights. In 2011, when I was chief child protection in this country with a role to manage UNICEF’s interventions and human resources charged to protect children against various forms of violation of their rights, I embarked on research aiming to investigate conflicts experienced by Child Protection Workers (CPWs) related to their personal beliefs/practices and professional agenda. The methodology of the research was action oriented in line with my intention to put this work at the service of CPWs in Mali and beyond to improve their practice. I worked together with them to explore various dimensions of cultural conflicts and what it takes to manage it effectively in the context of Mali.
The Key findings could be summarised as follows:
- CPWs are involved in various forms of violation of children’s right: Violence, Child Labour, Female Genital Mutilation/Cutting (FGM/C)…
- The cultural conflict experienced by CPWs is among challenges that limit the programme from achieving better results. It also impacts negatively on the workers through lack of job satisfaction, low self-esteem and health problems due to the clash experienced between UNICEF expectations and local community values.
- Socio economic determinants interrelate with strategies in the management of cultural and practice mismatches experienced by CPWs.
The analysis of CPWs’ positioning through what I call ‘Triangle Model’ provides insights into various types of CPWs encountered in respect of the distance separating them from their professional values/agenda. Answers to questions raised by the triangle model is likely to help guide policies and strategies to build the capacities of CPWs and to support them to adjust to their professional agenda. This project also demonstrates that to face cultural discrepancies, stakeholders will need to go one step beyond ‘ordinary’ strategies to experiment with more contextualized initiatives. Recognition of inherent power in workers and communities should be seen as part of any theory of capacity building itself based on the framework of social constructionism
On Harmonic Analysis Operators in Laguerre-Dunkl and Laguerre-Symmetrized Settings
We study several fundamental harmonic analysis operators in the
multi-dimensional context of the Dunkl harmonic oscillator and the underlying
group of reflections isomorphic to . Noteworthy, we admit
negative values of the multiplicity functions. Our investigations include
maximal operators, -functions, Lusin area integrals, Riesz transforms and
multipliers of Laplace and Laplace-Stieltjes type. By means of the general
Calder\'on-Zygmund theory we prove that these operators are bounded on weighted
spaces, , and from weighted to weighted weak .
We also obtain similar results for analogous set of operators in the closely
related multi-dimensional Laguerre-symmetrized framework. The latter emerges
from a symmetrization procedure proposed recently by the first two authors. As
a by-product of the main developments we get some new results in the
multi-dimensional Laguerre function setting of convolution type
Genuinely sharp heat kernel estimates on compact rank-one symmetric spaces, for Jacobi expansions, on a ball and on a simplex
We prove genuinely sharp two-sided global estimates for heat kernels on all
compact rank-one symmetric spaces. This generalizes the authors' recent result
obtained for a Euclidean sphere of arbitrary dimension. Furthermore, similar
heat kernel bounds are shown in the context of classical Jacobi expansions, on
a ball and on a simplex. These results are more precise than the qualitatively
sharp Gaussian estimates proved recently by several authors.Comment: 16 page
Sharp estimates of the spherical heat kernel
We prove sharp two-sided global estimates for the heat kernel associated with
a Euclidean sphere of arbitrary dimension. This solves a long-standing open
problem.Comment: 9 pages, to appear in J. Math. Pures Appl. (9
Twin SUSY
We construct an extension of the MSSM in which superpartners can naturally be
heavier than the electroweak scale. This ``little hierarchy'' of scales is
stable because the Higgs arises as a pseudo-Nambu-Goldstone boson in the
breaking of an accidental SU(4) symmetry of the Higgs sector. Supersymmetry and
the global symmetry combine to forbid logarithmically divergent one-loop
contributions to the Higgs mass. The accidental symmetry follows from a simple
``twin'' parity which exchanges the SU(2) sectors in the SU(3)_C x SU(2)_L x
SU(2)_R x U(1)_X gauge group.Comment: 10 pages; v2: references and Lawrence adde
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