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Search Results: 1 - 10 of 325451 matches for " Sánchez Vendramini "
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Consideraciones sobre el autor del De Rebus Bellicis y su valoración en la historiografía contemporánea
Sánchez Vendramini,Darío N;
Temas medievales , 2009,
Abstract: the de rebus bellicis is a small text of petition addressed by an unknown author to a late antique emperor. it contains a list of proposals for economic, political and military reforms with the purpose of improving the roman empire's de fensive capacity in front of the barbarian invaders. contemporary historiography has valued these reform projects variously and in some cases even expressed opposing views. equally different are the interpretations made of the author on ground of the text. the present article, after briefly reviewing the text and structure of the treatise, compares it with other written material of its time with the purpose of placing it in context. this analysis proves the de rebus bellicis to be a typical product of its own time. finally, a new interpretation of two doubtful fragments shows that modern evaluations of the text and its author have not always been solidly founded.
Transformación y tradición.consideraciones sobre la adaptación del pensamiento politico clásico en la anteguedad tardia
Dário N. Sánchez Vendramini
Diálogos , 2010, DOI: 10.4025/dialogos.v12i2 e 3.19
Forces in Struggle in the Country and the City Today in Brazil: Beyond a Dualistic Understanding  [PDF]
Célia Regina Vendramini
Current Urban Studies (CUS) , 2015, DOI: 10.4236/cus.2015.31006
Abstract: Is it still possible to distinguish the line that separates the country and the city? How do rural and urban workers produce their life today? What are the characteristics that distinguish or approximate them? What movements of resistance have been observed? These questions guide our reflections about the relationship between urban and rural space. Based on a study in the urban pe-riphery and in encampments and settlements of the Landless Rural Workers Movements in Brazil, we seek to understand alternative forms of occupation of space today.
Long-term response to sulfonylurea in a patient with diabetes due to mutation in the KCNJ11 gene
Vendramini, Marcio F.;Gurgel, Lucimary C.;Moisés, Regina S.;
Arquivos Brasileiros de Endocrinologia & Metabologia , 2010, DOI: 10.1590/S0004-27302010000800003
Abstract: objective: to report the long-term (30-month) effect of the switch from insulin to sulfonylurea in a patient carrying the p.g53d (c.158g>a) mutation in kcnj11 gene. subject and method: a 29-year-old male patient was diagnosed with diabetes in the third month of life and after identification of a heterozygous p.g53d mutation in the kcnj11 gene, the therapy was switched from insulin to sulfonylurea. results: long-term follow-up (30 months) showed that good metabolic control was maintained (hba1c: 6.6%) and the glibenclamide dose could be reduced. conclusion: long-term therapy with sulfonylureas in patients with neonatal diabetes due to mutation in the kcnj11 gene is safe and promotes sustained improvement of glycemic control.
Calculation of the Gravitational Constant G Using Electromagnetic Parameters  [PDF]
Jesús Sánchez
Journal of High Energy Physics, Gravitation and Cosmology (JHEPGC) , 2017, DOI: 10.4236/jhepgc.2017.31012
Abstract: In this paper, we will derive the following formula for the value of the gravitational constant G: \"\" (1). This equation has only 0.81% error compared to the common accepted value \"\" [1]. The parameters in the equation are the following: \"\" the fine structure constant, q the elementary charge, \"\" the mass of the electron, \"\" the permittivity of the free space, e the exponential function and \"\" the relation between a circumference and its diameter. Values attached: \"\" [2], \"\"</span
Calculation of the Fine-Structure Constant  [PDF]
Jesús Sánchez
Journal of High Energy Physics, Gravitation and Cosmology (JHEPGC) , 2018, DOI: 10.4236/jhepgc.2018.43029
Abstract: The fine-structure constant α [1] is a constant in physics that plays a fundamental role in the electromagnetic interaction. It is a dimensionless constant, defined as: \"\" (1) being q the elementary charge, ε0 the vacuum permittivity, h the Planck constant and c the speed of light in vacuum. The value shown in (1) is according CODATA 2014 [2]. In this paper, it will be explained that the fine-structure constant is one of the roots of the following equation: \"\" (2) being e the mathematical constant e (the base of the natural logarithm). One of the solutions of this equation is: \"\" (3) This means that it is equal to the CODATA value in nine decimal digits (or the seven most significant ones if you prefer). And therefore, the difference between both values is: \"\" (4) This coincidence is higher in orders of magnitude than the commonly accepted necessary to validate a theory towards experimentation. As the cosine function is periodical, the Equation (2) has infinite roots and could seem the coincidence is just by chance. But as it will be shown in the paper, the separation among the different solutions is sufficiently high to disregard this possibility. It will also be shown that another elegant way to show Equation (2) is the following (being i the imaginary unit): \"\" (5) having of course the same root (3). The possible meaning of this other representation (5) will be explained.
How to Check If a Number Is Prime Using a Finite Definite Integral  [PDF]
Jesús Sánchez
Journal of Applied Mathematics and Physics (JAMP) , 2019, DOI: 10.4236/jamp.2019.72028
Abstract: In the history of mathematics different methods have been used to detect if a number is prime or not. In this paper a new one will be shown. It will be demonstrated that if the following equation is zero for a certain number p, this number p would be prime. And being m an integer number higher than (the lowest, the most efficient the operation). \"\" . If the result is an integer, this result will tell us how many permutations of two divisors, the input number has. As you can check, no recurrent division by odd or prime numbers is done, to check if the number is prime or has divisors. To get to this point, we will do the following. First, we will create a domain with all the composite numbers. This is easy, as you can just multiply one by one all the integers (greater or equal than 2) in that domain. So, you will get all the composite numbers (not getting any prime) in that domain. Then, we will use the Fourier transform to change from this original domain (called discrete time domain in this regards) to the frequency domain. There, we can check, using Parseval’s theorem, if a certain number is there or not. The use of Parseval’s theorem leads to the above integral. If the number p that we want to check is not in the domain, the result of the integral is zero and the number is a prime. If instead, the result is an integer, this integer will tell us how many permutations of two divisors the number p has. And, in consequence information how many factors, the number p has. So, for any number p lower than 2m?- 1, you can check if it is prime or not, just making the numerical definite integration. We will apply this integral in a computer program to check the efficiency of the operation. We will check, if no further developments are done, the numerical integration is inefficient computing-wise compared with brute-force checking. To be added, is the question regarding the level of accuracy needed (number of decimals and number of steps in the numerical integration) to have a reliable result for large numbers. This will be commented on the paper, but a separate study will be needed to have detailed conclusions. Of course,
Síndrome de Wolfram: da defini??o às bases moleculares
Ribeiro, Maria Regina F.;Crispim, Felipe;Vendramini, Márcio F.;Moisés, Regina S.;
Arquivos Brasileiros de Endocrinologia & Metabologia , 2006, DOI: 10.1590/S0004-27302006000500003
Abstract: wolfram syndrome (ws) is an autosomal recessive progressive neurodegenerative disorder characterized by diabetes mellitus and optic atrophy. diabetes insipidus and sensorineural deafness are also noted frequently, explaining the acronym didmoad (diabetes insipidus, diabetes mellitus, optic atrophy and deafness) by which the syndrome is also referred. additional manifestations such as atonic bladder, ataxia, nystagmus and predisposition for psychiatric illness may be present. the wolfram syndrome gene, wfs1, was mapped to chromosome 4p16.1 by positional cloning. it encodes an 890-amino-acid polypeptide named wolframin. although the wolframin function is still not completely known, its localization to the endoplasmic reticulum suggests it can play a role in calcium homeostasis, membrane trafficking and protein processing. knowing the cellular function of wolframin is necessary for understanding the pathophysiology of wolfram syndrome. this knowledge may lead to development of therapies to prevent or reduce the outcomes of ws.
Income Distribution and Growth in Leontief’s Closed Model  [PDF]
Alberto Benítez Sánchez
Theoretical Economics Letters (TEL) , 2016, DOI: 10.4236/tel.2016.61002
Abstract: While the routine use of Leontief’s closed model is limited to the case in which the whole income of an economy goes to wages, this paper shows that the model also permits the representation of production programs corresponding to every level of income distribution between wages and profits. In addition, for each of these programs, the model allows calculating the price system and the profit rate when this rate is the same in all industries. Thus, the results obtained in Sraffa’s surplus economy are established following an alternative way, this makes it possible to build a particular standard system for each level of income distribution between wages and profits. Besides, the fact that the model includes the set of households as a particular industrial branch permits to build a balanced-growth path of the economy in which the quantities of work used in each industry as well as the goods consumed by the workers are studied explicitly, unlike what happens in von Neumann’s model. The paper also shows that, under a weak assumption, the balanced-growth rate is independent of the worker’s choice.
Piketty’s Inequality between the Profit and Growth Rates and Its Implications for the Reproduction of Economic Elites  [PDF]
Alberto Benítez Sánchez
Theoretical Economics Letters (TEL) , 2016, DOI: 10.4236/tel.2016.66125
This paper studies, within a growth model, some effects of the inequality between the profit and growth rates on the reproduction of economic elites. To this end, it considers as functions of the capital/income ratio the relations between, on the one hand, the economic growth rate and, on the other hand, the growth rates of capital and of national income. Based on this, it shows that when the income of a particular socio-economic stratum increases with respect to the national income, the lower limit for the growth rate of the first income depends almost exclusively on the variations of the capital/income ratio and of the average productivity of labor, while the employment growth rate plays a secondary role. Moreover, the paper distinguishes between three categories of renter and establishes sufficient conditions for the reproduction of each one of them. It points out that the third category, which comprises those renter dynasties whose share in the national capital stock increases with each generation, constitutes a quasi-feudal development within capitalist societies.
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