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(R1882) Effects of Viscosity, Oblateness, and Finite Straight Segment on the Stability of the Equilibrium Points in the RR3BP
Get PDFAssociating the influences of viscosity and oblateness in the finite straight segment model of the Robe’s problem, the linear stability of the collinear and non-collinear equilibrium points for a small solid sphere m3 of density \rho3 are analyzed. This small solid sphere is moving inside the first primary m1 whose hydrostatic equilibrium figure is an oblate spheroid and it consists of an incompressible homogeneous fluid of density \rho1. The second primary m2 is a finite straight segment of length 2l. The existence of the equilibrium points is discussed after deriving the pertinent equations of motion of the small solid sphere. It is found that viscosity does not affect the location and number of equilibrium points but affects the stability as it converts the marginal stability to asymptotic stability. However, oblateness affects the locations of the equilibrium points. Applicability of the results of this study to an astrophysical problem is discussed and we have calculated a lower bound on ratio of orbital radius R and total mass M of primaries m1 and m2 of an astrophysical problem to which the results obtained may be applied. This ratio denoted by s is called as scaling factor
(R1507) Mathematical Modeling and Analysis of Seqiahr Model: Impact of Quarantine and Isolation on COVID-19
Get PDFAt the moment in time, an outbreak of COVID-19 is transmitting on from human to human. Different parts have different quality of life (e.g., India compared to Russia), which implies the impact varies in each part of the world. Although clinical vaccines are available to cure, the question is how to minimize the spread without considering the vaccine. In this paper, via a mathematical model, the transmission dynamics of novel coronavirus with quarantine and isolation facilities have been proposed. The examination of the proposed model is set in motion with the boundedness and positivity of the solution, sole disease-free equilibrium, and local stability. Then, the condition for the existence of sole endemic equilibrium and its local stability has established. In addition, the global stability of the endemic equilibrium for a special case has been investigated. Further, it has shown that the system undergoes a transcritical bifurcation. A threshold analysis has also performed to examine the effect of quarantine on transmission dynamics. Lastly, numerical simulations are giving hand support to theoretical results
Nok Culture of Arts from Ham village of Nok in Kaduna State of Nigeria - ( Head)
No full textTriangular eyes and perforated pupils, noses, mouths, and ears combine to depict men and women with bold, abstracted features. Nok artifacts are clay figurines of animals and stylized human beings, usually heads; perforated eyes of an elliptical or triangular shape are typical of the style. It is interesting to note that a similar emphasis on the head in later African art traditions often signifies respect for intelligence.https://digitalcommons.pvamu.edu/african-sculptures-and-masks/1024/thumbnail.jp
BENIN Culture of Arts from Western Africa, bordering the Bight of Benin, between Nigeria and Togo - ( Plaque wooden pillars )
No full textThe plague wooden pillars are covered from top to bottom with rectangular cast brass plaques. These plaques are understood to have autonomous meaning and to tell complex narratives in relation to one another.https://digitalcommons.pvamu.edu/african-sculptures-and-masks/1025/thumbnail.jp
YAKA Culture of Arts from southwestern Democratic Republic of the Congo, with Angola border to their west - ( Fetish Figure)
No full textThis Yaka fetish figure (as called in older literature) or power figure, is attributed to the Suku people. It is an implement that would generally be used by diviners in the healing and protection rituals they held.
Yaka masks and figures have distinctive bulky forms, globular eyes, and turned-up noses; some are polychrome, and many have raffia cloth or fringes attached. Yaka figures are multi-functional and sometimes have contradictory roles, for example, they were used to heal and to cause illness.https://digitalcommons.pvamu.edu/african-sculptures-and-masks/1028/thumbnail.jp
Journal of Bangladesh Studies - Vol 24 Number 1- 2022
Get PDFJBS is a double-blind peer-reviewed journal registered in the USA. JBS has the goal of publishing cutting-edge research on Bangladesh and reaching a wide range of academic institutions and research centers throughout the world.
We encourage articles from all disciplines of scholarship pertaining to the study of Bangladesh, the Bangladesh diaspora, or comparative studies in which Bangladesh is included. Our aim is to provide a platform for rigorous intellectual and academic research as well as studies that are practical and relevant to everyday solutions and policymaking. Articles should address Bangladesh\u27s problems and prospects from theoretical, empirical, or analytical perspectives prevalent in academic disciplines. Articles must be grounded in theory, analysis, and referenced work, and be able to address readers beyond the specific disciplines they represent.https://digitalcommons.pvamu.edu/journal-of-bangladesh-studies/1000/thumbnail.jp
NGBANDI Culture of Arts found in Congo (Kinshasa). Their primary language is Southern Ngbandi - ( Standing Male Figure)
No full textThe standing male figure carved from wood, serves as the core of this power object or accumulative sculpture are among the Ngandi, related to hunting and magic. Some represent the Ngbirondo spirit and act as guardians of the village.https://digitalcommons.pvamu.edu/african-sculptures-and-masks/1041/thumbnail.jp
ASHANTI AKAN Culture of Arts from Akan ethnic group and are native to the Asante Region of modern-day Ghana - ( Akuba Doll)
No full textDisk-headed akuaba figures remain one of the most recognizable forms in African art. The flat, disklike head is a strongly exaggerated convention of the Akan ideal of beauty: a high, oval forehead, slightly flattened in actual practice by gentle modeling of an infant\u27s soft cranial bones.
The name akua ba comes from the Akan legend of a woman named Akua who was barren, but like all Akan women, she desired most of all to bear children.https://digitalcommons.pvamu.edu/african-sculptures-and-masks/1055/thumbnail.jp
BAMBARA Culture Of Arts in Mali, Guinea, Burkina Faso and Senegal - ( Antelope Dance Headdress)
No full textThese headdresses, also called ci wara, are carved to honor that original mythical being. Among the Bamana, oral traditions credit a mythical being named Ci Wara, a divine being a half-mortal and half animal, with the introduction of agriculture to the Bamana.https://digitalcommons.pvamu.edu/african-sculptures-and-masks/1065/thumbnail.jp
(R1521) On Weighted Lacunary Interpolation
Get PDFIn this paper, we considered the non-uniformly distributed zeros on the unit circle, which are obtained by projecting vertically the zeros of the derivative of Legendre polynomial together with x=1 and x=-1 onto the unit circle. We prescribed the function on the above said nodes, while its second derivative at all nodes except at x=1 and x=-1 with suitable weight function and obtained the existence, explicit forms and establish a convergence theorem for such interpolatory polynomial. We call such interpolation as weighted Lacunary interpolation on the unit circle