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Papers by Francisco Rodriguez
Naval Engineers Journal, 1990
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Modelling forest systems. Workshop on the interface between reality, modelling and the parameter estimation processes, Sesimbra, Portugal, 2-5 June 2002, 2003
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The actual software development models that employ methods and processes are designed to focus on... more The actual software development models that employ methods and processes are designed to focus on the definition of the software development processes in large scale companies. In the case of Mexico (a country in which almost 80% of the software industry is composed of small and medium scale companies) the penetration of such models have being quite minimal. In this research, a software development process has been designed, based on the CMMI maturity level 2 in its staged representation, to offer the PyMEs (from Spanish, Pequeñas y Medianas Empresas) a reference framework for building systems and implementing software engineering techniques. This process was designed by identifying the set of better practices that would permit PyMEs to construct a high quality software product. Also, this process enabled 14 development teams to reach a CMMI maturity level 3.
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In this paper we apply different techniques of information distortion on a set of classical books... more In this paper we apply different techniques of information distortion on a set of classical books written in English. We study the impact that these distortions have upon the Kolmogorov complexity and the clustering by compression technique (the latter based on Normalized Compression Distance, NCD). We show how to decrease the complexity of the considered books introducing several modifications in
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Computing Research Repository, 2007
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IEEE Transactions on Knowledge and Data Engineering, 2011
Compression distances have been widely used in knowledge discovery and data mining. They are para... more Compression distances have been widely used in knowledge discovery and data mining. They are parameter-free, widely applicable, and very effective in several domains. However, little has been done to interpret their results or to explain their behavior. In this paper, we take a step toward understanding compression distances by performing an experimental evaluation of the impact of several kinds of
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Introduction Linear and nonlinear optical effects induced by photoisomerization and photo-orienta... more Introduction Linear and nonlinear optical effects induced by photoisomerization and photo-orientation of azobenzene chromophores in polymer matrices are exten-sively studied for various optical and photonic applications. 1, 2 The photo-orientation is based on selective excitation of the chromophores with linearly polarized light, which leads to an excess of chromophores being oriented perpendicular to the polarization direction of the excitation beam, thus becom-ing inert to the incident irradiation. The anisotropic orientation of the chromo-phores leads to in-plane birefringence, which can be erased by randomizing the molecular orientation with, e.g., circularly-polarized light. From the viewpoint of materials preparation, the preferred approach for most applications is to attach the chromophores covalently to the polymer backbone. Such side-chain polymers can contain high concentration of the chromophores, thereby providing a strong response to optical fields. More-over, the optic...
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This paper explores whether the post-1980 decline in infrastructure investment in developing coun... more This paper explores whether the post-1980 decline in infrastructure investment in developing countries is a source of growing disparities in world per capita GDP. I start by reviewing the literature on the infrastructure-productivity link, arguing that a balanced reading of previous studies points to a significant effect of infrastructure provision on productivity. I then empirically study whether retrenchments in infrastructure
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Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
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American journal of respiratory and critical care medicine, Jan 15, 2002
We describe two reliable methods for high-throughput screening of proteinase inhibitor (PI) S and... more We describe two reliable methods for high-throughput screening of proteinase inhibitor (PI) S and PI Z alpha(1)-antitrypsin (alpha(1)-AT) deficiency alleles from dried blood spot (DBS) specimens using the LightCycler fluorimetric analyzer. The method was used to study 72 patients with chronic obstructive pulmonary disease. Results were confirmed with DNA sequencing. The alpha(1)-AT concentration in DBS was determined with immune nephelometry. Sixteen patients (22%) showed no PI Z or PI S mutations. Five patients (7%) had a heterozygous genotype consisting of a PI S allele and a normal allele for the Z and S positions (non-S non-Z). Twenty-five patients (35%) had a heterozygous genotype consisting of a PI Z and a non-S non-Z allele. Two (3%) had the PI SS genotype, 2 (3%) the PI SZ, and 20 (28%) the PI ZZ. All patients with two normal alpha(1)-AT alleles and 10 heterozygous carriers of one normal and one deficient allele had alpha(1)-AT levels that fell within the alpha(1)-AT DBS nor...
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Naval Engineers Journal, 1990
Bookmarks Related papers MentionsView impact
Modelling forest systems. Workshop on the interface between reality, modelling and the parameter estimation processes, Sesimbra, Portugal, 2-5 June 2002, 2003
Bookmarks Related papers MentionsView impact
The actual software development models that employ methods and processes are designed to focus on... more The actual software development models that employ methods and processes are designed to focus on the definition of the software development processes in large scale companies. In the case of Mexico (a country in which almost 80% of the software industry is composed of small and medium scale companies) the penetration of such models have being quite minimal. In this research, a software development process has been designed, based on the CMMI maturity level 2 in its staged representation, to offer the PyMEs (from Spanish, Pequeñas y Medianas Empresas) a reference framework for building systems and implementing software engineering techniques. This process was designed by identifying the set of better practices that would permit PyMEs to construct a high quality software product. Also, this process enabled 14 development teams to reach a CMMI maturity level 3.
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
In this paper we apply different techniques of information distortion on a set of classical books... more In this paper we apply different techniques of information distortion on a set of classical books written in English. We study the impact that these distortions have upon the Kolmogorov complexity and the clustering by compression technique (the latter based on Normalized Compression Distance, NCD). We show how to decrease the complexity of the considered books introducing several modifications in
Bookmarks Related papers MentionsView impact
Computing Research Repository, 2007
Bookmarks Related papers MentionsView impact
IEEE Transactions on Knowledge and Data Engineering, 2011
Compression distances have been widely used in knowledge discovery and data mining. They are para... more Compression distances have been widely used in knowledge discovery and data mining. They are parameter-free, widely applicable, and very effective in several domains. However, little has been done to interpret their results or to explain their behavior. In this paper, we take a step toward understanding compression distances by performing an experimental evaluation of the impact of several kinds of
Bookmarks Related papers MentionsView impact
Introduction Linear and nonlinear optical effects induced by photoisomerization and photo-orienta... more Introduction Linear and nonlinear optical effects induced by photoisomerization and photo-orientation of azobenzene chromophores in polymer matrices are exten-sively studied for various optical and photonic applications. 1, 2 The photo-orientation is based on selective excitation of the chromophores with linearly polarized light, which leads to an excess of chromophores being oriented perpendicular to the polarization direction of the excitation beam, thus becom-ing inert to the incident irradiation. The anisotropic orientation of the chromo-phores leads to in-plane birefringence, which can be erased by randomizing the molecular orientation with, e.g., circularly-polarized light. From the viewpoint of materials preparation, the preferred approach for most applications is to attach the chromophores covalently to the polymer backbone. Such side-chain polymers can contain high concentration of the chromophores, thereby providing a strong response to optical fields. More-over, the optic...
Bookmarks Related papers MentionsView impact
This paper explores whether the post-1980 decline in infrastructure investment in developing coun... more This paper explores whether the post-1980 decline in infrastructure investment in developing countries is a source of growing disparities in world per capita GDP. I start by reviewing the literature on the infrastructure-productivity link, arguing that a balanced reading of previous studies points to a significant effect of infrastructure provision on productivity. I then empirically study whether retrenchments in infrastructure
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
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American journal of respiratory and critical care medicine, Jan 15, 2002
We describe two reliable methods for high-throughput screening of proteinase inhibitor (PI) S and... more We describe two reliable methods for high-throughput screening of proteinase inhibitor (PI) S and PI Z alpha(1)-antitrypsin (alpha(1)-AT) deficiency alleles from dried blood spot (DBS) specimens using the LightCycler fluorimetric analyzer. The method was used to study 72 patients with chronic obstructive pulmonary disease. Results were confirmed with DNA sequencing. The alpha(1)-AT concentration in DBS was determined with immune nephelometry. Sixteen patients (22%) showed no PI Z or PI S mutations. Five patients (7%) had a heterozygous genotype consisting of a PI S allele and a normal allele for the Z and S positions (non-S non-Z). Twenty-five patients (35%) had a heterozygous genotype consisting of a PI Z and a non-S non-Z allele. Two (3%) had the PI SS genotype, 2 (3%) the PI SZ, and 20 (28%) the PI ZZ. All patients with two normal alpha(1)-AT alleles and 10 heterozygous carriers of one normal and one deficient allele had alpha(1)-AT levels that fell within the alpha(1)-AT DBS nor...
Bookmarks Related papers MentionsView impact