Gabriel Rodriguez - Academia.edu (original) (raw)
Papers by Gabriel Rodriguez
Studies in Economics and Finance, 2013
Some stylized facts for foreign exchange and stock market returns are explored using statistical ... more Some stylized facts for foreign exchange and stock market returns are explored using statistical methods. Formal statistics for testing presence of autocorrelation, asymmetry, and other deviations from normality are applied to these …nancial returns. Dynamic correlations and di¤erent kernel estimations and approximations of the empirical distributions are also under scrutiny. Furthermore, dynamic analysis of mean, standard deviation, skewness and kurtosis are also performed to evaluate time-varying properties in return distributions. Main results reveal di¤erent sources and types of non-normality in the return distributions in both markets. Left fat tails, excess kurtosis, return clustering and unconditional time-varying moments show important deviations from normality. Identi…able volatility cycles in both forex and stock markets are associated to common macro …nancial uncertainty events.
Journal of Macroeconomics, 2012
Applied Economics Letters, 2010
Studies in Economics and Finance, 2013
Some stylized facts for foreign exchange and stock market returns are explored using statistical ... more Some stylized facts for foreign exchange and stock market returns are explored using statistical methods. Formal statistics for testing presence of autocorrelation, asymmetry, and other deviations from normality are applied to these …nancial returns. Dynamic correlations and di¤erent kernel estimations and approximations of the empirical distributions are also under scrutiny. Furthermore, dynamic analysis of mean, standard deviation, skewness and kurtosis are also performed to evaluate time-varying properties in return distributions. Main results reveal di¤erent sources and types of non-normality in the return distributions in both markets. Left fat tails, excess kurtosis, return clustering and unconditional time-varying moments show important deviations from normality. Identi…able volatility cycles in both forex and stock markets are associated to common macro …nancial uncertainty events.
Journal of Macroeconomics, 2012
Applied Economics Letters, 2010
Scientometrics, 2006
Patent citations are extensively used as a measure of patent quality. However, counting citations... more Patent citations are extensively used as a measure of patent quality. However, counting citations does not account for the fact that citations come from patents of different qualities, and that citations are of variable qualities. We develop a citation index which takes into account the cumulative quality of the citing patents. We apply this index to the 2,139,314 utility patents granted in the U.S. between 1975 and 1999. We study the properties of this index by year and by technological category, and analyse the links between patents.
Scientometrics, 2006
Patent citations are extensively used as a measure of patent quality. However, counting citations... more Patent citations are extensively used as a measure of patent quality. However, counting citations does not account for the fact that citations come from patents of different qualities, and that citations are of variable qualities. We develop a citation index which takes into account the cumulative quality of the citing patents. We apply this index to the 2,139,314 utility patents granted in the U.S. between 1975 and 1999. We study the properties of this index by year and by technological category, and analyse the links between patents.
Bulletin de la Société préhistorique française, 1966
Bulletin de la Société préhistorique française, 1970
Bulletin de la Société préhistorique française, 1968
Bulletin de la Société préhistorique française, 1976
Learning & Behavior, 2014
Nonhungry rats received training consisting of intermixed presentations of a compound flavor and ... more Nonhungry rats received training consisting of intermixed presentations of a compound flavor and an element of that compound (AX, X, AX, X, . . .), and then a separate block of presentations of another compound (BX, BX, BX, . . .). Stimuli A and B were two odor solutions (almond and vanilla), and stimulus X was a highly concentrated solution of sucrose. After training, a state of hunger was induced in the rats, and their consumption levels of A and B alone were tested. We found higher test consumption of B than of A (Exp. 1). We interpreted these differences as indicating that the B-X association had become stronger than the A-X association as a result of the training. In Experiment 2, we demonstrated that the presence of X during training was necessary for that effect to appear (Exp. 2). These results give support to the recent proposal that within-compound associations are maintained better by blocked than by intermixed preexposure . We discuss the implications of this difference for explaining the intermixed-blocked perceptual-learning effect.
Urology, 2004
Penile amputation is a rare urologic trauma for which immediate surgical replantation is indicate... more Penile amputation is a rare urologic trauma for which immediate surgical replantation is indicated. Microsurgical techniques can reduce skin and graft loss complications; nonetheless, such complications are still highly prevalent. We report a case of self-inflicted penile amputation and describe a nonmicrosurgical technique for replantation. To improve postoperative edema due to venous congestion, we applied medicinal leeches to the penis. The edema quickly resolved, but overlying skin loss occurred, which required superficial debridement. At follow-up the patient had glans re-epithelialization with normal voiding, sensation, and erections. To our knowledge, this is the first reported case of nonmicrosurgical penile replantation with leech therapy. UROLOGY 63: 981.e10-981.e12, 2004.
FIG 5. Postoperative axial T2-weighted images (5400/103 [TR/ TE]). Resolution of hydrocephalus is... more FIG 5. Postoperative axial T2-weighted images (5400/103 [TR/ TE]). Resolution of hydrocephalus is shown, with no change of the midbrain lesions.
Neurología Argentina, 2014
información del artículo Historia del artículo: Recibido el 1 de noviembre de 2013 Aceptado el 19... more información del artículo Historia del artículo: Recibido el 1 de noviembre de 2013 Aceptado el 19 de febrero de 2014 On-line el 26 de abril de 2014 Palabras clave: Esclerosis lateral amiotrófica Seguimiento Tratamiento de sostén r e s u m e n La esclerosis lateral amiotrófica es una enfermedad neurológica degenerativa que afecta a la vía piramidal a lo largo de su primera y segunda neuronas motoras. La supervivencia al diagnóstico ronda el 20% a los 3-5 años.
Urology, 2007
Recently, our institution reported on a rare primary retroperitoneal mucinous cystadenocarcinoma ... more Recently, our institution reported on a rare primary retroperitoneal mucinous cystadenocarcinoma which was only the second type of this kind of tumor ever reported in a male patient. To our knowledge, we report the first male case of a primary mucinous cystadenoma presenting as an enlarging scrotal mass. These lesions are extremely rare and represent only 0.3% of all appendiceal specimens. Because the number of these tumors remains limited, proven treatment regimens and the necessary follow-up have yet to be elucidated. We hope to provide further insight in the monitoring and treatment of these tumors. UROLOGY 70: 1223.e3-1223.e5, 2007.
Learning & Behavior, 2011
Four experiments examined generalization of latent inhibition (LI) as a function of the length of... more Four experiments examined generalization of latent inhibition (LI) as a function of the length of preexposure in a conditioned taste aversion procedure with rats. Experiment 1 showed that one or four nonreinforced presentations of a flavor compound (BX) retarded subsequent conditioning to another compound (AX). However, after eight presentations of BX, conditioning to AX occurred at the same rate as with no preexposure. These results indicate that generalization of LI decreased as the length of preexposure to BX increased. Experiment 2 replicated this effect of reducing generalization, as well as demonstrating that LI actually increased as the length of preexposure to AX increased. Experiment 3 extended the generality of the effect to a procedure in which both BX and AX were preexposed. Experiment 4 demonstrated a similar reducing-generalization effect when generalization of LI from BX to X was assessed. All of these data are consistent with the notion that prolonged preexposure to BX enhances its discriminability. Different learning mechanisms that might be responsible for this perceptual learning effect are discussed.
The Journal of Urology, 2001
The Journal of Urology, 2001
Studies in Economics and Finance, 2013
Some stylized facts for foreign exchange and stock market returns are explored using statistical ... more Some stylized facts for foreign exchange and stock market returns are explored using statistical methods. Formal statistics for testing presence of autocorrelation, asymmetry, and other deviations from normality are applied to these …nancial returns. Dynamic correlations and di¤erent kernel estimations and approximations of the empirical distributions are also under scrutiny. Furthermore, dynamic analysis of mean, standard deviation, skewness and kurtosis are also performed to evaluate time-varying properties in return distributions. Main results reveal di¤erent sources and types of non-normality in the return distributions in both markets. Left fat tails, excess kurtosis, return clustering and unconditional time-varying moments show important deviations from normality. Identi…able volatility cycles in both forex and stock markets are associated to common macro …nancial uncertainty events.
Journal of Macroeconomics, 2012
Applied Economics Letters, 2010
Studies in Economics and Finance, 2013
Some stylized facts for foreign exchange and stock market returns are explored using statistical ... more Some stylized facts for foreign exchange and stock market returns are explored using statistical methods. Formal statistics for testing presence of autocorrelation, asymmetry, and other deviations from normality are applied to these …nancial returns. Dynamic correlations and di¤erent kernel estimations and approximations of the empirical distributions are also under scrutiny. Furthermore, dynamic analysis of mean, standard deviation, skewness and kurtosis are also performed to evaluate time-varying properties in return distributions. Main results reveal di¤erent sources and types of non-normality in the return distributions in both markets. Left fat tails, excess kurtosis, return clustering and unconditional time-varying moments show important deviations from normality. Identi…able volatility cycles in both forex and stock markets are associated to common macro …nancial uncertainty events.
Journal of Macroeconomics, 2012
Applied Economics Letters, 2010
Scientometrics, 2006
Patent citations are extensively used as a measure of patent quality. However, counting citations... more Patent citations are extensively used as a measure of patent quality. However, counting citations does not account for the fact that citations come from patents of different qualities, and that citations are of variable qualities. We develop a citation index which takes into account the cumulative quality of the citing patents. We apply this index to the 2,139,314 utility patents granted in the U.S. between 1975 and 1999. We study the properties of this index by year and by technological category, and analyse the links between patents.
Scientometrics, 2006
Patent citations are extensively used as a measure of patent quality. However, counting citations... more Patent citations are extensively used as a measure of patent quality. However, counting citations does not account for the fact that citations come from patents of different qualities, and that citations are of variable qualities. We develop a citation index which takes into account the cumulative quality of the citing patents. We apply this index to the 2,139,314 utility patents granted in the U.S. between 1975 and 1999. We study the properties of this index by year and by technological category, and analyse the links between patents.
Bulletin de la Société préhistorique française, 1966
Bulletin de la Société préhistorique française, 1970
Bulletin de la Société préhistorique française, 1968
Bulletin de la Société préhistorique française, 1976
Learning & Behavior, 2014
Nonhungry rats received training consisting of intermixed presentations of a compound flavor and ... more Nonhungry rats received training consisting of intermixed presentations of a compound flavor and an element of that compound (AX, X, AX, X, . . .), and then a separate block of presentations of another compound (BX, BX, BX, . . .). Stimuli A and B were two odor solutions (almond and vanilla), and stimulus X was a highly concentrated solution of sucrose. After training, a state of hunger was induced in the rats, and their consumption levels of A and B alone were tested. We found higher test consumption of B than of A (Exp. 1). We interpreted these differences as indicating that the B-X association had become stronger than the A-X association as a result of the training. In Experiment 2, we demonstrated that the presence of X during training was necessary for that effect to appear (Exp. 2). These results give support to the recent proposal that within-compound associations are maintained better by blocked than by intermixed preexposure . We discuss the implications of this difference for explaining the intermixed-blocked perceptual-learning effect.
Urology, 2004
Penile amputation is a rare urologic trauma for which immediate surgical replantation is indicate... more Penile amputation is a rare urologic trauma for which immediate surgical replantation is indicated. Microsurgical techniques can reduce skin and graft loss complications; nonetheless, such complications are still highly prevalent. We report a case of self-inflicted penile amputation and describe a nonmicrosurgical technique for replantation. To improve postoperative edema due to venous congestion, we applied medicinal leeches to the penis. The edema quickly resolved, but overlying skin loss occurred, which required superficial debridement. At follow-up the patient had glans re-epithelialization with normal voiding, sensation, and erections. To our knowledge, this is the first reported case of nonmicrosurgical penile replantation with leech therapy. UROLOGY 63: 981.e10-981.e12, 2004.
FIG 5. Postoperative axial T2-weighted images (5400/103 [TR/ TE]). Resolution of hydrocephalus is... more FIG 5. Postoperative axial T2-weighted images (5400/103 [TR/ TE]). Resolution of hydrocephalus is shown, with no change of the midbrain lesions.
Neurología Argentina, 2014
información del artículo Historia del artículo: Recibido el 1 de noviembre de 2013 Aceptado el 19... more información del artículo Historia del artículo: Recibido el 1 de noviembre de 2013 Aceptado el 19 de febrero de 2014 On-line el 26 de abril de 2014 Palabras clave: Esclerosis lateral amiotrófica Seguimiento Tratamiento de sostén r e s u m e n La esclerosis lateral amiotrófica es una enfermedad neurológica degenerativa que afecta a la vía piramidal a lo largo de su primera y segunda neuronas motoras. La supervivencia al diagnóstico ronda el 20% a los 3-5 años.
Urology, 2007
Recently, our institution reported on a rare primary retroperitoneal mucinous cystadenocarcinoma ... more Recently, our institution reported on a rare primary retroperitoneal mucinous cystadenocarcinoma which was only the second type of this kind of tumor ever reported in a male patient. To our knowledge, we report the first male case of a primary mucinous cystadenoma presenting as an enlarging scrotal mass. These lesions are extremely rare and represent only 0.3% of all appendiceal specimens. Because the number of these tumors remains limited, proven treatment regimens and the necessary follow-up have yet to be elucidated. We hope to provide further insight in the monitoring and treatment of these tumors. UROLOGY 70: 1223.e3-1223.e5, 2007.
Learning & Behavior, 2011
Four experiments examined generalization of latent inhibition (LI) as a function of the length of... more Four experiments examined generalization of latent inhibition (LI) as a function of the length of preexposure in a conditioned taste aversion procedure with rats. Experiment 1 showed that one or four nonreinforced presentations of a flavor compound (BX) retarded subsequent conditioning to another compound (AX). However, after eight presentations of BX, conditioning to AX occurred at the same rate as with no preexposure. These results indicate that generalization of LI decreased as the length of preexposure to BX increased. Experiment 2 replicated this effect of reducing generalization, as well as demonstrating that LI actually increased as the length of preexposure to AX increased. Experiment 3 extended the generality of the effect to a procedure in which both BX and AX were preexposed. Experiment 4 demonstrated a similar reducing-generalization effect when generalization of LI from BX to X was assessed. All of these data are consistent with the notion that prolonged preexposure to BX enhances its discriminability. Different learning mechanisms that might be responsible for this perceptual learning effect are discussed.
The Journal of Urology, 2001
The Journal of Urology, 2001