oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 7 )

2019 ( 119 )

2018 ( 121 )

2017 ( 131 )

Custom range...

Search Results: 1 - 10 of 56249 matches for " Christopher Eraye Michael "
All listed articles are free for downloading (OA Articles)
Page 1 /56249
Display every page Item
Abolition of Commercial Motorbikes and Its Implication on Transportation and Criminality in Calabar Metropolis
Christopher Eraye Michael,Usman Adekunle Ojedoku,Eke Chijioke Chinwokwu
International Journal of Social Science Studies , 2013, DOI: 10.11114/ijsss.v1i1.103
Abstract: The study examined the abolition of commercial motorbikes and its implications on transportation and criminality in Calabar Metropolis. The main objective of the study was to assess the implications associated with the abolition of commercial motorbikes as a means of transport and its effect on criminality in Calabar Metropolis. To achieve this objective, the study elicited data through questionnaire from 984 randomly selected respondents. Simple percentages and chi-square were employed to analyze elicited data at 0.05 levels of significance. The findings revealed that factors such as upsurge in criminal activities, rise in traffic accidents, traffic congestion and recklessness on the part of the operators of commercial motorbikes among others account for the abolition of motorbikes as a means of transportation in Calabar Metropolis. The study findings also revealed that the abolition of commercial motorbikes resulted in the delay of workers getting vehicles to their workplaces, increased in transportation fare charges and quarrel amongst commuters as they struggle to access few available transport vehicles. Furthermore, the study findings revealed that the abolition has resulted to an increase in criminal activities such as armed robbery, pick-pocketing, theft and snatching of valuables. The study recommends among others: the provision of alternative jobs for the displaced youths who have been affected by the government action, government should partner with private sectors to establish avoidable transport system for the masses and government should ensure that urban taxi cabs maintained approved standard transport fares in all routes to avoid arbitrary and unavoidable charges.
Degradation Rates of Native versus Exotic Leaves in a Tributary of the Yellow River in Georgia  [PDF]
Bagie George, Christopher Brandon, Michael Erwin
American Journal of Plant Sciences (AJPS) , 2017, DOI: 10.4236/ajps.2017.88132
Abstract: Forested aquatic streams depend heavily on forest canopy input. This input is a primary resource for the macroinvertebrate fauna. As a result, changes in the canopy impact the aquatic ecosystem. The focus of this study was to identify leaf degradation rates to determine resource availability for invertebrate communities. Specifically, leaf degradation rates were determined for oak, poplar, maple and kudzu. Oak, poplar, and maple are established stream canopy vegetation while kudzu is an invasive species. By comparing leaf degradation rates of native vs. exotic leaves, it provides an insight to changes in community structure. Furthermore, these changes in the plant canopy biodiversity have long-term implications for stream health.
New trace norm inequalities for 2 x 2 blocks of diagonal matrices
Christopher King,Michael Nathanson
Mathematics , 2003,
Abstract: Several new trace norm inequalities are established for 2n x 2n block matrices, in the special case where the four n x n blocks are diagonal. Some of the inequalities are non-commutative analogs of Hanner's inequality, others describe the behavior of the trace norm under re-ordering of diagonal entries of the blocks.
Finite Element Exterior Calculus for Parabolic Evolution Problems On Riemannian Hypersurfaces
Michael Holst,Christopher Tiee
Mathematics , 2015,
Abstract: Over the last ten years, the Finite Element Exterior Calculus (FEEC) has been developed as a general framework for linear mixed variational problems, their numerical approximation by mixed methods, and their error analysis. The basic approach in FEEC, pioneered by Arnold, Falk, and Winther in two seminal articles in 2006 and 2010, interprets these problems in the setting of Hilbert complexes, leading to a more general and complete understanding. Over the last five years, the FEEC framework has been extended to a broader set of problems. One such extension, due to Holst and Stern in 2012, was to problems with variational crimes, allowing for the analysis and numerical approximation of linear and geometric elliptic partial differential equations on Riemannian manifolds of arbitrary spatial dimension. Their results substantially generalize the existing surface finite element approximation theory in several respects. In 2014, Gillette, Holst, and Zhu extended the FEEC in another direction, namely to parabolic and hyperbolic evolution systems by combining the FEEC framework for elliptic operators with classical approaches for parabolic and hyperbolic operators, by viewing solutions to the evolution problem as lying in Bochner spaces (spaces of Banach-space valued parametrized curves). Related work on developing an FEEC theory for parabolic evolution problems has also been done independently by Arnold and Chen. In this article, we extend the work of Gillette-Holst-Zhu and Arnold-Chen to evolution problems on Riemannian manifolds, through the use of framework developed by Holst and Stern for analyzing variational crimes. We establish a priori error estimates that reduce to the results from earlier work in the flat (non-criminal) setting. Some numerical examples are also presented.
An isomorphism between the fusion algebras of $V_L^+$ and type $D^{(1)}$ level 2
Michael Cuntz,Christopher Goff
Mathematics , 2008,
Abstract: The fusion algebra of the vertex operator algebra $V_L^+$ for a rank 1 even lattice $L$ is explicitly shown to be isomorphic to the fusion algebra of the Kac-Moody algebra of type $D^{(1)}$ at level 2 in almost all cases.
On the existence of a common quadratic Lyapunov function for a rank one difference
Christopher King,Michael Nathanson
Mathematics , 2004,
Abstract: Suppose that A and B are real stable matrices, and that their difference A-B is rank one. Then A and B have a common quadratic Lyapunov function if and only if the product AB has no real negative eigenvalue. This result is due to Shorten and Narendra, who showed that it follows as a consequence of the Kalman-Yacubovich-Popov solution of the Lur'e problem. Here we present a new and independent proof based on results from convex analysis and the theory of moments.
Hyponatremia is Associated with Increased Severity of Disease in Critically Ill Children with Bronchiolitis  [PDF]
Michael E. Seifert, Scott R. Welak, Christopher L. Carroll
International Journal of Clinical Medicine (IJCM) , 2010, DOI: 10.4236/ijcm.2010.12007
Abstract: INTRODUCTION: Hyponatremia is the most common electrolyte abnormality seen in the intensive care unit (ICU), and is associated with increased morbidity and mortality. Critically ill children with bronchiolitis are at risk of developing hyponatremia, due to impaired renal free water excretion and exogenous sources of excess free water intake. We hypothesize that the development of hyponatremia is associated with a more complicated clinical course in critically ill children with bronchiolitis. METHODS: A retrospective case-control study was conducted that included all children admitted to the ICU with bronchiolitis over a two year period (n = 59). Patients were divided into two clinical groups: those that were hyponatremic (serum sodium < 136 mmol/L) during their ICU stay and those that remained normonatremic (serum sodium ≥ 136 mmol/L). RESULTS: Forty-three children (73%) developed hyponatremia while in the ICU. Hyponatremic children were intubated more often than normonatremic children (OR 16.7; 95% CI 4.1-68.5); however, hyponatremia rarely developed before intubation (2%). Hyponatremic children also had a longer ICU length of stay (209 ± 137 hrs vs. 130 ± 85 hrs, p = 0.01). In a subset of intubated children (n = 44), thirty-eight (88%) developed hyponatremia. These intubated children had a lower mean serum sodium concentration (132.8 mmol/L vs. 137.3 mmol/L, p < 0.0001) than non-intubated children. CONCLUSIONS: Hyponatremia is a common comorbidity in children admitted to the ICU with bronchiolitis, and is associated with increased illness severity, as evidenced by a higher frequency of intubation and a longer ICU length of stay.
Does Greek Foot Predispose to Morton’s Neuroma?  [PDF]
Christopher Jump, Michael Rice, Daniel Gheorghiu, Jordi Sanchez-Ballester
Open Journal of Orthopedics (OJO) , 2014, DOI: 10.4236/ojo.2014.47029
Abstract: Background: Morton’s neuroma is the enlargement of an interdigital nerve most commonly located between the third and fourth metatarsals. Greek foot is a normal variant where the first metatarsal is shorter than the second metatarsal. To our knowledge, there is currently no reported association between Greek foot and Morton’s neuroma in the literature. Methods: Retrospective study of 184 patients. Two separate cohorts were recruited. Cohort A comprised of 100 randomly selected asymptomatic patients. Cohort B comprised of 84 patients with a history of foot pain and histologically confirmed Morton’s neuroma. Foot shape was determined by using a self-assessment tool and plain radiographs. Statistical analyses were performed using the Chi-square test on the association between Greek foot and Morton’s neuroma. A p-value of <0.05 was considered statistically significant. Results: Our study shows a statistically significant association between Greek foot and Morton’s neuroma with a prevalence of Greek foot in Cohort A of 20% and in Cohort B of 63%. (p = 2.6 × 10﹣9). Conclusions: This study has shown a possible association between the presence of a Greek foot and the presence of Morton’s neuroma. Although our study design has limitations and does not allow full statistical analysis, we do believe that the shown association between Greek foot and Morton’s neuroma can help clinicians and other health care providers in establishing the diagnosis of Morton’s neuroma in patients with a painful foot.
The Effect of Human Development on Mammal Populations of the Punta Leona Private Wildlife Refuge, Costa Rica
Van Hulle,Michael; Vaughan,Christopher;
Revista de Biología Tropical , 2009,
Abstract: the effect of human development on six diurnal mammal species was studied using transects in the punta leona private wildlife refuge, puntarenas, costa rica during the dry season months of march and april 2006. individuals/km was recorded for each species in more developed (md) (near paved roads, buildings, construction, or deforested trees) and less developed areas (ld) (secondary forest). the white-faced apuchin monkey (cebus capucinus) (n = 233), coatimundi (nasua narica) (n = 46), and central american spider monkey (ateles geoffroyi) (n = 36) demonstrated a preference for less-developed habitats. the nine-banded armadillo (dasypus novemcinctus) (n = 4), tamandua (tamandua mexicana) (n = 2) and variegated squirrel (sciurus variegatoides) (n = 5) were observed infrequently. white-faced monkeys avoided construction areas, but received artificial food daily in developed areas. coatimundis also received artificial foods daily and showed aggression towards guests. rev. biol. trop. 57 (1-2): 441-449. epub 2009 june 30.
The Effect of Human Development on Mammal Populations of the Punta Leona Private Wildlife Refuge, Costa Rica
Michael Van Hulle,Christopher Vaughan
Revista de Biología Tropical , 2009,
Abstract: The effect of human development on six diurnal mammal species was studied using transects in the Punta Leona Private Wildlife Refuge, Puntarenas, Costa Rica during the dry season months of March and April 2006. Individuals/km was recorded for each species in more developed (MD) (near paved roads, buildings, construction, or deforested trees) and less developed areas (LD) (secondary forest). The white-faced apuchin monkey (Cebus capucinus) (n = 233), coatimundi (Nasua narica) (n = 46), and Central American spider monkey (Ateles geoffroyi) (n = 36) demonstrated a preference for less-developed habitats. The nine-banded armadillo (Dasypus novemcinctus) (n = 4), tamandua (Tamandua mexicana) (n = 2) and variegated squirrel (Sciurus variegatoides) (n = 5) were observed infrequently. White-faced monkeys avoided construction areas, but received artificial food daily in developed areas. Coatimundis also received artificial foods daily and showed aggression towards guests. Rev. Biol. Trop. 57 (1-2): 441-449. Epub 2009 June 30. Se estudiaron seis especies de mamíferos mediante transectos durante la estación seca tardía (marzo y abril) de 1996 en el Refugio de Vida Silvestre de Punta Leona, Puntarenas, Costa Rica. Se registró la cantidad de animales por km en lugares con mucho efecto humano (cerca del caminos pavimentados, edificios, construcción, y deforestación) y lugares con menos efecto. El mono carablanca (Cebus capucinus) (n = 233), el pizote (Nasua narica) (n = 46), y el mono ara a centroamericano (Ateles geoffroyi) (n = 36) prefirieron lugares con menos efecto. Se observó pocos armadillos (Dasypus novemcinctus) (n = 4), osos hormigueros (Tamandua mexicana) (n = 2), y ardillas (Sciurus variegatoides) (n = 5). Los monos carablancas y pizotes aceptan alimentos artificiales y los pizotes fueron agresivos con los turistas. Los carablancas evitan los lugares con construcciones y los caminos pavimentados.
Page 1 /56249
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.