175 research outputs found
Promoting Creativity and Entrepreneurship in Education: The Panacea for Poverty Reduction in Nigeria
Poverty among Nigerian people has been noted to be devastating to the extent that Nigeria was ranked 12th among the poorest nations in the world by World Bank in its 2000 World Bank Atlas (Ohia, 2000). Findings also show that most Nigerians live on less than 1 Dollar per day. With poverty, hunger sets in with its attendant crime, corruption and many other social vices. These anomalies are prevalent among Nigerians because of the neglect meted out to TVET, which objectives hinge on the use of head and hands for wealth creation. This paper gives clue to phenomena about creative abilities and entrepreneurial spirit by which possession, one would expectantly become job creator rather than job seeker and as well raise his living standard above poverty level. In conclusion, the paper sadly pointed out that traditional ideas and primitive techniques that served well in the past are relegated in preference for foreign ideas and foreign made goods with minimal concern by Nigerians to improve on local capabilities. What should be done to achieve success were proffered
Enhancing Quality in Educational Practice and Instructional Delivery by Teachers of Technology and Vocational Education in Nigeria
This paper is put together to educate on the best possible means to deliverinstructions to students in technical and vocational education (TVE) programs. Realizing that TVE involves skills acquisition and also practically affiliated, the paper is conscious of this fact. As a result, it highlighted techniques and the factors that determine good teaching assignment as part of best means to achieve success in TVE instructional delivery. Recommendations are proffered based on the highlights
On the spectrum of the magnetohydrodynamic mean-field alpha^2-dynamo operator
The existence of magnetohydrodynamic mean-field alpha^2-dynamos with
spherically symmetric, isotropic helical turbulence function alpha is related
to a non-self-adjoint spectral problem for a coupled system of two singular
second order ordinary differential equations. We establish global estimates for
the eigenvalues of this system in terms of the turbulence function alpha and
its derivative alpha'. They allow us to formulate an anti-dynamo theorem and a
non-oscillation theorem. The conditions of these theorems, which again involve
alpha and alpha', must be violated in order to reach supercritical or
oscillatory regimes.Comment: 35 pages, 4 figures, to be published in SIAM J. Math. Anal
Internet: A place for patent retrieval
Countries design patent laws according to their respective economic interest. Before one files intellectual property one should know the regimes under which his intellectual property is placed. Intellectual properties are always of intense debate. The basic reason for the controversies is due tolack of transdisciplinary approaches to address patent concepts. In this present mini-review, we are presenting some web links that will help any researcher to get acquainted with the rules and regulationof filling an intellectual property of some countries as internet is now viewed as the place form where retrieval of information is possible with in second
Spectroscopie de vibration infrarouge du silicium amorphe hydrogéné évaporé
Ce travail porte sur l’étude des configurations des liaisons Si-H des couches minces du silicium amorphe hydrogéné évaporé (a-Si:H) préparées dans un bâti ultra-vide (UHV). L’hydrogène atomique est obtenu à l’aide d’un plasma dans un tube à décharge dirigé vers le porte-substrat. Les fréquences de vibrations et la nature des liaisons Si-H ont été analysées à partir des mesures de spectroscopie infrarouge à transformée de Fourier.Mots-clés : silicium amorphe hydrogéné, absorption infrarouge, transformée de Fourie
Solving the Class Responsibility Assignment Problem Using Metaheuristic Approach
Assigning responsibilities to classes is among first and arguably most important steps when creating objectoriented software design. This step depends greatly on human judgment and experience. In this paper our objective is to automatize assigning responsibilities to classes usingmetaheuristic optimization algorithms. Four different algorithms (simple genetic algorithm, hill climbing, simulated annealing and particle swarm optimization), using class coupling and cohesion metrics, were implemented and their results are compared. Implemented algorithms take semantically annotated responsibility dependency graph as input. This paper describes responsibility dependency graph, implemented algorithms and used coupling and cohesion metrics in detail. Paper also reports on a performed case study. Ultimately, based on results obtained from all implemented algorithms, conclusions on search landscape of class responsibility assignment problem are drawn
Herschel/HIFI observations of interstellar OH+ and H2O+ towards W49N: a probe of diffuse clouds with a small molecular fraction
We report the detection of absorption by interstellar hydroxyl cations and
water cations, along the sight-line to the bright continuum source W49N. We
have used Herschel's HIFI instrument, in dual beam switch mode, to observe the
972 GHz N = 1 - 0 transition of OH+ and the 1115 GHz 1(11) - 0(00) transition
of ortho-H2O+. The resultant spectra show absorption by ortho-H2O+, and strong
absorption by OH+, in foreground material at velocities in the range 0 to 70
km/s with respect to the local standard of rest. The inferred OH+/H2O+
abundance ratio ranges from ~ 3 to ~ 15, implying that the observed OH+ arises
in clouds of small molecular fraction, in the 2 - 8% range. This conclusion is
confirmed by the distribution of OH+ and H2O+ in Doppler velocity space, which
is similar to that of atomic hydrogen, as observed by means of 21 cm absorption
measurements, and dissimilar from that typical of other molecular tracers. The
observed OH+/H abundance ratio of a few E-8 suggests a cosmic ray ionization
rate for atomic hydrogen of (0.6 - 2.4) E-16 s-1, in good agreement with
estimates inferred previously for diffuse clouds in the Galactic disk from
observations of interstellar H3+ and other species.Comment: Accepted for publication in A&A Letter
Computing Brane and Flux Superpotentials in F-theory Compactifications
In four-dimensional F-theory compactifications with N=1 supersymmetry the
fields describing the dynamics of space-time filling 7-branes are part of the
complex structure moduli space of the internal Calabi-Yau fourfold. We
explicitly compute the flux superpotential in F-theory depending on all complex
structure moduli, including the 7-brane deformations and the field
corresponding to the dilaton-axion. Since fluxes on the 7-branes induce 5-brane
charge, a local limit allows to effectively match the F-theory results to a
D5-brane in a non-compact Calabi-Yau threefold with threeform fluxes. We
analyze the classical and instanton contributions to the F-theory
superpotential using mirror symmetry for Calabi-Yau fourfolds. The F-theory
compactifications under consideration also admit heterotic dual descriptions
and we discuss the identification of the moduli in this non-perturbative
duality.Comment: 75 pages, 1 figure; typos corrected, references adde
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