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Search Results: 1 - 10 of 297535 matches for " J Igbaro "
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Art as a Catalyst of Religious Development in Nigeria
J Igbaro
African Research Review , 2010,
Abstract: Art in Nigeria from the early Christian Missionary s perspective was anembodiment of traditional African religion. Therefore, Nigerian art wasconsidered to be a taboo to the Christian religion, hence it should beabolished. The Islamic Jihadists on the other hand saw art as ensembles ofidolatry which must be destroyed while the traditionalists seemed to see artas the exclusive preserve of their religion, therefore, every art object shouldbe venerated. However, art is essentially a tool for the promotion of allreligions. The thrust of this paper is therefore to assess the Siameserelationship between art and religion in Nigeria irrespective of thecoloration.
Moremi Statue in Ile- Ife: A Symbol of Yoruba Aesthetics
A Yemisi, J Igbaro
African Research Review , 2010,
Abstract: Moremi was a Yoruba heroine whose statues are in Ile-Ife as a memorial of her votive sacrifice to save her people from annihilation. The paper focuses primarily on the importance of Moremi on Ife people, which led to her been immortalized. It is also an attempt to analyse the aesthetic qualities of Moremi statue in relation to Yoruba cosmology, which emphasizes and promotes the attributes of Yoruba philosophy of beauty which is more of an inward rather than an outward issue. The study makes use of two statues of Moremi in Ile-Ife. The symbolism of the dress items is discussed so as to drive home the inherent Yoruba aesthetic terms portrayed in the statues visà- vis its relevance in the society. The paper also compares the two statues so as to draw attention to the different aesthetic portrayals. The Moremi statue in the Ooni of Ife palace is actually the object of interest of this study; however the other statue at Moremi hall, Obafemi Awolowo University Ile-Ife is also studied for comparative analysis. The findings among others revealed that, though Moremi is still well revered in Ile-Ife, yet, the statues are not well maintained.
Art as a Tool in the Built Environment
J Igbaro, TY Akinbileje
African Research Review , 2010,
Abstract: Man’s interaction with the environment dates back to creation. The interaction of man with its environment has been crucial to the continuous existence of man in relation to solving the fundamental or basic needs of food, shelter and clothing. This has been woven into a web of different cultural environment. This type of cultural environment includes palaces, shrines, markets, malevolent forest and places of social interaction. Man retreated into the protective warmth of cave while the environment threatened his survival (wild animals and weather condition). It was at this period that attempt was made at artistic creation. From this natural habitat developed the more comfortable houses that have been built up till today. Basically, traditional African society operates in environments that advance healthy living, moral values and steady communal growth. They built many houses that are architectural master pieces and decorated them aesthetically without architects and professional designers. The cities and villages were set up according to the dictates of the environment within which they lived without town planners, yet, some of them can be likened to streets in Amsterdam (Denyer 1978). The absence of the architects and town planners were adequately catered for by artists (carvers, moulders, painters and other craftsmen). Today, many of our towns and cities are reflections of great wealth without commensurate aesthetic value, while some others portray signs of poverty of ideas and skilled men because art has been neglected. The thrust of this paper is to access the invaluable role that art plays in nationbuilding through the built environment that we can call our own. It also emphasized the significance of the role of professional artists in the support of a reliable and conducive environment, which was very prominent among the traditional people.
New components of the mercury’s perihelion precession  [PDF]
J. J. Smulsky
Natural Science (NS) , 2011, DOI: 10.4236/ns.2011.34034
Abstract: The velocity of perihelion rotation of Mercury's orbit relatively motionless space is computed. It is prove that it coincides with that calculated by the Newtonian interaction of the planets and of the compound model of the Sun’s rotation.
Simple General Purpose Ion Beam Deceleration System Using a Single Electrode Lens  [PDF]
J. Lopes, J. Rocha
World Journal of Engineering and Technology (WJET) , 2015, DOI: 10.4236/wjet.2015.33014
Abstract: Ion beam deceleration properties of a newly developed low-energy ion beam implantation system were studied. The objective of this system was to produce general purpose low-energy (5 to 15 keV) implantations with high current beam of hundreds of μA level, providing the most wide implantation area possible and allowing continuously magnetic scanning of the beam over the sample(s). This paper describes the developed system installed in the high-current ion implanter at the Laboratory of Accelerators and Radiation Technologies of the Nuclear and Technological Cam-pus, Sacavém, Portugal (CTN).
Constraints on velocity anisotropy of spherical systems with separable augmented densities
J. An
Physics , 2011, DOI: 10.1088/0004-637X/736/2/151
Abstract: If the augmented density of a spherical anisotropic system is assumed to be multiplicatively separable to functions of the potential and the radius, the radial function, which can be completely specified by the behavior of the anisotropy parameter alone, also fixes the anisotropic ratios of every higher-order velocity moment. It is inferred from this that the non-negativity of the distribution function necessarily limits the allowed behaviors of the radial function. This restriction is translated into the constraints on the behavior of the anisotropy parameter. We find that not all radial variations of the anisotropy parameter satisfy these constraints and thus that there exist anisotropy profiles that cannot be consistent with any separable augmented density.
On the augmented density of a spherical anisotropic dynamic system
J. An
Physics , 2010, DOI: 10.1111/j.1365-2966.2011.18324.x
Abstract: This paper presents a set of new conditions on the augmented density of a spherical anisotropic system that is necessary for the underlying two-integral phase-space distribution function to be non-negative. In particular, it is shown that the partial derivatives of the Abel transformations of the augmented density must be non-negative. Applied for the separable augmented densities, this recovers the result of van Hese et al. (2011).
Fractional calculus, completely monotonic functions, a generalized Mittag-Leffler function and phase-space consistency of separable augmented densities
J. An
Physics , 2012,
Abstract: Under the separability assumption on the augmented density, a distribution function can be always constructed for a spherical population with the specified density and anisotropy profile. Then, a question arises, under what conditions the distribution constructed as such is non-negative everywhere in the entire accessible subvolume of the phase-space. We rediscover necessary conditions on the augmented density expressed with fractional calculus. The condition on the radius part R(r^2) -- whose logarithmic derivative is the anisotropy parameter -- is equivalent to R(1/w)/w being a completely monotonic function whereas the condition on the potential part is stated as its derivative up to the order not greater than 3/2-b being non-negative (where b is the central limiting value for the anisotropy parameter). We also derive the set of sufficient conditions on the separable augmented density for the non-negativity of the distribution, which generalizes the condition derived for the generalized Cuddeford system by Ciotti & Morganti to arbitrary separable systems. This is applied for the case when the anisotropy is parameterized by a monotonic function of the radius of Baes & Van Hese. The resulting criteria are found based on the complete monotonicity of generalized Mittag-Leffler functions.
When is an axisymmetric potential separable?
J. An
Physics , 2013, DOI: 10.1093/mnras/stt1498
Abstract: An axially symmetric potential psi(R,z)=psi(r,theta) is completely separable if the ratio s:k is constant. Here r*s=d^2(r^2*psi)/dr/d(theta) and k=d^2(psi)/dR/dz. If beta=s/k, then the potential admits an integral of the form of I=(L^2+beta*v_z^2)/2+xi where xi is some function of positions determined by the potential psi. More generally, an axially symmetric potential respects the third axisymmetric integral of motion -- in addition to the classical integrals of the Hamiltonian and the axial component of the angular momentum -- if there exist three real constants a,b,c (not all simultaneously zero, a^2+b^2+c^2>0) such that a*s+b*h+c*k=0 where r*h=d^2(r*psi)/d(sigma)/d(tau) and (sigma,tau) is the parabolic coordinate in the meridional plane such that sigma^2=r+z and tau^2=r-z.
Flaws, Fallacies and Facts: Reviewing the Early History of the Lipid and Diet/Heart Hypotheses  [PDF]
J. Elliott
Food and Nutrition Sciences (FNS) , 2014, DOI: 10.4236/fns.2014.519201
Abstract: The lipid hypothesis of coronary heart disease proposes that a high total cholesterol level has a causative role in coronary heart disease (CHD), specifically in the development of atherosclerosis. It forms the basis for formulating target levels of serum cholesterol and hence the widespread use of statins for lowering cholesterol. An extension of the lipid hypothesis is the diet/heart hypothesis of coronary heart disease. This theory combines two ideas—that saturated fat raises cholesterol levels, and that a reduced saturated fat intake will lower cholesterol levels, thereby inhibiting the development of atherosclerosis and manifestations of CHD. Those who make diet recommendations or prescribe medication to reduce cholesterol may be unaware of the underpinning science. The original research behind these recommendations has given us “healthy heart” guidelines and preventive measures we assume to be true. While the lipid and diet/heart hypotheses are often presented as fact, they remain inadequately proven theories that have little agreement from experts. Historical perspectives can help us understand the basis of current-day beliefs. In the lipid hypothesis case, research from the 1950s and 60s was instrumental in its formation. This early work should not be considered irrelevant, outdated or obsolete because current recommendations from national heart associations in many countries continue to be shaped by these studies. This paper examines evidence used to formulate the lipid hypothesis and, subsequently, the diet/ heart hypothesis. By critically evaluating steps in the formation of the theory, inconsistencies, mistakes and alternate explanations become apparent and cast doubt on its validity.
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