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Search Results: 1 - 10 of 12985 matches for " Joseph Gerald Pressey "
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The treatment of small cell carcinoma of the ovary hypercalcemic type
Joseph Gerald Pressey
Oncology Reviews , 2011, DOI: 10.4081/1
Abstract: Small cell carcinoma of the ovary hypercalcemic type (SCCOHT) is an exceedingly rare and poorly characterized tumor with an unknown cell of origin. SCCOHT typically occurs in adolescents and young women with a peak incidence in the third decade of life. The initial description of SCCOHT noted a dismal outcome among patients, particularly those with advanced disease. However, recently published studies indicate that SCCOHT is often amenable to therapy and even in advanced stages potentially curable. Surgery paired with multiagent chemotherapy including platinum-based agents and etoposide are often cited in patients who achieve a complete remission. While reports of successfully treated patients have emerged, the scarcity of prospective clinical trials has slowed the validation of effective treatment regimens. The value of extensive surgery, radiation therapy, and high-dose chemotherapy with autologous stem cell rescue remain uncertain. Insight into the biology underlying SCCOHT is desperately needed to guide the implementation of novel therapeutics in SCCOHT.
Reentry: a key mechanism for integration of brain function
Gerald M. Edelman,Joseph A. Gally
Frontiers in Integrative Neuroscience , 2013, DOI: 10.3389/fnint.2013.00063
Abstract: Reentry in nervous systems is the ongoing bidirectional exchange of signals along reciprocal axonal fibers linking two or more brain areas. The hypothesis that reentrant signaling serves as a general mechanism to couple the functioning of multiple areas of the cerebral cortex and thalamus was first proposed in 1977 and 1978 (Edelman, 1978). A review of the amount and diversity of supporting experimental evidence accumulated since then suggests that reentry is among the most important integrative mechanisms in vertebrate brains (Edelman, 1993). Moreover, these data prompt testable hypotheses regarding mechanisms that favor the development and evolution of reentrant neural architectures.
On the Insignificant Cross-Sectional Risk-Return Relationship  [PDF]
Gerald H. L. Cheang, Joseph C. S. Kang, Michael Z. F. Li
Journal of Mathematical Finance (JMF) , 2012, DOI: 10.4236/jmf.2012.21004
Abstract: In their paper, “On the Cross-sectional Relation between Expected Returns and Betas”, Roll and Ross (1994) demonstrated that the expected returns and betas can have zero relationship even when the underlying market portfolio proxies are nearby the efficient frontier. In this note, we provide the mathematical details that lead to their conclusion and further show that their claim needs not hold for the entire set of MV portfolios.
Determinants of Mobile Banking Adoption in the Ghanaian Banking Industry: A Case of Access Bank Ghana Limited  [PDF]
Agbemabiese George Cudjoe, Patrick Amfo Anim, Joseph Gerald Nii Tetteh Nyanyofio
Journal of Computer and Communications (JCC) , 2015, DOI: 10.4236/jcc.2015.32001
Abstract: The study examined the determinant of mobile banking adoption among bank customers in Ghana, with specific emphasis on Access Bank. In line with literature, the study applies theoretical frameworks which have been developed from existing literatures on innovation and adoption to collect responses from one hundred and fifty (150) sampled customers of Access Bank in order to investigate the determinants of mobile banking adoption in the Ghanaian banking industry. The results from the study revealed that, each factor measured had some level of significant effect on consumer intention to adopt and use mobile banking services provided by Access Bank. Additionally, the study unveiled that, perceived credibility and perceived financial cost were the major setback with regards to customers adoption of mobile banking services provided by Access Bank, and as a result of this, Ghanaians have formed a negative behavioural pattern towards mobile banking. In addition, the findings showed that, perceived credibility and perceived financial cost have a stronger effect on consumer intention to adopt and use mobile banking service than perceived usefulness and perceived ease of use. It was, therefore, recommended that banks in Ghana should create more awareness through personal interaction with customers, develop quality initiatives in order to build customer’s confidence. Equally, banks should also review the cost of their mobile banking service.
Uncertainties around the Implementation of a Clearing-Control Policy in a Unique Catchment in Northern Australia: Exploring Equity Issues and Balancing Competing Objectives
Vanessa M. Adams, Robert L. Pressey
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0096479
Abstract: Land use change is the most significant driver linked to global species extinctions. In Northern Australia, the landscape is still relatively intact with very low levels of clearing. However, a re-energized political discourse around creating a northern food bowl means that currently intact ecosystems in northern Australia could be under imminent threat from increased land clearing and water extraction. These impacts are likely to be concentrated in a few regions with suitable soils and water supplies. The Daly River Catchment in the Northern Territory is an important catchment for both conservation and development. Land use in the Daly catchment has been subject to clearing guidelines that are largely untested in terms of their eventual implications for the spatial configuration of conservation and development. Given the guidelines are not legislated they might also be removed or revised by subsequent Territory Governments, including the recently-elected one. We examine the uncertainties around the spatial implications of full implementation of the Daly clearing guidelines and their potential effects on equity of opportunity across land tenures and land uses. We also examine how removal of the guidelines could affect conservation in the catchment. We conclude that the guidelines are important in supporting development in the catchment while still achieving conservation goals, and we recommend ways of implementing the guidelines to make best use of available land resources for intensified production.
Increasing tableaux and Narayana numbers
Timothy Pressey,Anna Stokke,Terry Visentin
Mathematics , 2014,
Abstract: We give a counting formula for the set of rectangular increasing tableaux in terms of generalized Narayana numbers. We define small $m$-Schr\"oder paths and give a bijection between the set of increasing rectangular tableaux and small $m$-Schr\"oder paths, generalizing a result of Pechenik [3]. Using $K$-jeu de taquin promotion, which was defined by Thomas and Yong [10], we give a cyclic sieving phenomenon for the set of increasing hook tableaux.
Attosecond-Scale Probing of the Electron Motion in the H-Atom Groundstate  [PDF]
Gerald Rosen
Journal of Modern Physics (JMP) , 2012, DOI: 10.4236/jmp.2012.312230
Abstract: Based on recent advances in attosecond strong-field spectroscopy and the current feasibility for trapping individual groundstate H-atoms from a neon-gas matrix, an experiment to probe the groundstate motion of the electron in the H-atom is proposed here.
A Mathematical Proof: Focus during Weekdays Should Be on Supply for the Sabbath a Support for Workable Competition  [PDF]
Gerald Aranoff
Modern Economy (ME) , 2012, DOI: 10.4236/me.2012.38116
Abstract: This paper proves mathematically in a defined model with restrictive assumptions that consumers are better off when they have more food for the Sabbath at the expense of having less food for the other six days of the week! Like the manna that fell from heaven for forty years in the desert—an omer to a person, Sunday through Friday with double portions on Friday—we assume that consumers buy standardized semi-perishable food baskets, one basket per person per day, Sunday through Friday with extra baskets for the Sabbath. We analyze benefits to consumers according to two alternative pricing schemes, whereby consumer expenditures and weekly food consumed are the same. We prove that consumers are better off according to the pricing scheme that allows for more food for the Sabbath day. This agrees with business cycle theories that urge social focus on increasing and prolonging cyclical peaks. This supports John M. Clark’s workable competition thesis and will surprise supporters of SR marginal-cost pricing.
A Model Illustrating Consumer Inconstancy: Demand and Supply Sides  [PDF]
Gerald Aranoff
Modern Economy (ME) , 2013, DOI: 10.4236/me.2013.412088
Abstract:

John M. Clark in his classic 1923 Economics of Overhead Costs asks if anyone knows what it costs to supply demand irregularity. He also asks if consumers need demand irregularity, consciously or unconsciously. We provide a model for a plausible theoretical basis to begin to answer each question. The models permit mathematical proofs and graphic demonstrations of the costs to society of supplying for demand irregularity and of the willingness to pay on the part of consumers for demand irregularity. JEL (D24).

 

A Model of Manufacturers and Buyers of Cars over the Business Cycle Illustrating Competitive Manufacturing  [PDF]
Gerald Aranoff
Theoretical Economics Letters (TEL) , 2014, DOI: 10.4236/tel.2014.47070
Abstract:

We illustrate competitive manufacturing with an original theoretical model of manufacturers and buyers of cars over a business cycle that have peak and off-peak demand periods. There are two types of plants manufacturing cars, plantK and plantL, each having linear total costs with absolute capacity limits. PlantK operates with low VC and high FC by being capital intensive. PlantK is output-rates rigid since it produces throughout the business cycle and always at capacity. PlantL operates with low FC and high VC by relying on outsourcing major components and parts. PlantL is output-rates flexible since it produces only in the peak-demand periods. We show results under SRMC pricing. Then we examine an alternate arrangement which

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