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Papers by Fernando Garcia
BMC Medical Imaging, 2006
Background: Tumor classification is inexact and largely dependent on the qualitative pathological... more Background: Tumor classification is inexact and largely dependent on the qualitative pathological examination of the images of the tumor tissue slides. In this study, our aim was to develop an automated computational method to classify Hematoxylin and Eosin (H&E) stained tissue sections based on cancer tissue texture features.
Urology, 2001
Objectives. To evaluate the safety and efficacy of open renal cryoablation of small solid renal m... more Objectives. To evaluate the safety and efficacy of open renal cryoablation of small solid renal masses, since the delivery of freezing temperatures has been shown to effectively ablate solid neoplasms of the liver, uterus, and prostate. Methods. A total of 29 patients were treated with open renal cryoablation since December 1996 and followed up to evaluate the treatment safety and initial radiographic response. Results. The median preoperative lesion size was 2.2 cm, with 22 solid renal masses and 7 complex renal lesions. Five serious adverse events occurred in 5 patients, with only one event directly related to the procedure. One patient experienced a biopsy-proven local recurrence, and 91.3% of patients (median follow-up 16 months) demonstrated a complete radiographic response with only a residual scar or small, nonenhancing cyst.
This study explored the relationship between parenting styles and self-esteem among 1,239 11-to 1... more This study explored the relationship between parenting styles and self-esteem among 1,239 11-to 15-yr.-old Brazilian adolescents (54% girls; M age = 13.4 yr., S!D= 1.4). Teenagers' families were classified into 1 of 4 groups (Authoritative, Authoritarian, Indulgent, or Neglectful) based on adolescents' answers to the ESPA29 Parental Socialization Scale. Participants completed the AF5 Multidimensional Self-Esteem Scale which appraises five dimensions: Academic, Social, Emotional, Family, and Physical. Analyses showed that Brazilian adolescents from Indulgent families scored equal (Academic and Social) or higher (Family) in Self-esteem than adolescents from Authoritative families. Adolescents from Indulgent families scored higher than adolescents from Authoritarian and Neglectful families in four Self-esteem dimensions, Academic, Social, Family, and Physical. Adolescents from Authoritative families scored higher than adolescents from Authoritarian and Neglectful families in three Self-esteem dimensions, Academic, Social, and Family. These results suggest that Authoritative parenting is not associated with optimum self-esteem in Brazil.
Theory and research on social support have paid little attention to the existence of important ma... more Theory and research on social support have paid little attention to the existence of important macrosocial variables determining level and content of social relationships. This study examines variations in social integration as a function of social class and residential area characteristics. Results for 234 subjects living in high and low risk neighbourhoods indicated that differences between higher and lower social class groups follow different patterns in different residential areas. Also, same social class position appeared to have different significance as a function of residential area characteristics. The levels of three social integration measures-community integration and satisfaction, community association and participation, and contribution in community organizations-were significantly higher for lower class in low risk neighbourhoods than in high risk ones. However, significant differences were found in only one measure for higher social class groups, with higher levels of community association and participation in high risk neighbourhoods than in low risk ones. The discussion examines a 'social impoverishment' hypothesis for high risk environments, and proposes possible protective factors for higher status residents. Relations between formal and informal sources of support, and implications for social intervention strategies are also considered.
Una serie de trabajos cuestionan la validez estadística de las p ru ebas para m é t ricas (F y t)... more Una serie de trabajos cuestionan la validez estadística de las p ru ebas para m é t ricas (F y t) en campos de inve s t i gación que hab itualmente emplean intensivamente la metodología ex p e rimental para contrastar sus teorías. Las dudas ap a recen porque la fo rma de esta distri bución no se ajusta a la curva normal. En concreto, el tiempo de re a c c i ó n en las tareas de memoria, atención, decisión léxica, e t c. sigue una distri bución asimétrica positiva, que puede estar asociada al efecto de algunas va ri ables ex t rañas como la distracción, o p ro d u c i rse por la desmotivación del sujeto después de un fracaso en la tarea ex p e rimental. Estas circunstancias implican que algunas obs e rvaciones sean muy ex t remas (tiempos de reacción muy altos) y la fo rma final de la distri bución mu e s t ral re s u l t e, por lo tanto, asim é t rica positiva (véase la exposición de Luce, 1986).
Enviar correspondencia a: Javier Pons Diez. C/ Rafael "el Gallo", 33-8 § . 46014 Valencia. Teléfo... more Enviar correspondencia a: Javier Pons Diez. C/ Rafael "el Gallo", 33-8 § . 46014 Valencia. Teléfono (96)3791575.
sensibilización previa de los sujetos al tratamiento (véase un ejemplo en Sprangers y . El diseño... more sensibilización previa de los sujetos al tratamiento (véase un ejemplo en Sprangers y . El diseño, en su estructura lógico/formal (véase tabla 1), consta de cuatro grupos, de los que dos reciben el tratamiento y los otros dos tienen la consideración de grupos de control y de todos ellos, la mitad pasan por una situación de pretest y la otra mitad no. Huck y Sandler, (1973, p. 54) han señalado que la exposición al pretest incrementa (o disminuye) la sensibilidad de los sujetos al tratamiento, aumentando (o disminuyendo) los efectos estimados de éste, lo que resulta decisivo a la hora de poder generalizar los resultados. Este inconveniente, que afecta tanto al diseño pretest/posttest con grupo de control como al diseño con grupo de control y sólo posttest, es superado en el diseño de cuatro grupos de Solomon al añadir dos El artículo describe la problemática asociada al análisis estadístico del Diseño de Cuatro Grupos de Solomon. Campbell y Stanley (1963) afirmaron que "el diseño de cuatro grupos de Solomon tiene un alto prestigio y representa el primer acercamiento serio al problema de la validez externa". Sin embargo, la aplicación del diseño de cuatro grupos de Solomon ha sido escasa, quizá a causa de la falta de certeza acerca de su tratamiento estadístico (Braver y Braver, 1988). Estos últimos autores han añadido a las anteriores una aproximación meta-analítica que no está exenta de algunas limitaciones, especialmente las referidas al control del error tipo I.
The influence of perceived severity and sense of personal responsibility of police officers on th... more The influence of perceived severity and sense of personal responsibility of police officers on their level of involvement in cases of intimate partner violence against women is analyzed. Three levels of police involvement are considered: low, medium, and high. The sample consists of 143 Spanish police officers. A 2 × 2 × 3 factorial design is conducted to test hypotheses. Effects of perceived severity and personal responsibility are found only at the highest level of police involvement. For low and medium levels of involvement, no differences in perceived severity and personal responsibility of police officers are found.
BMC Medical Imaging, 2006
Background: Tumor classification is inexact and largely dependent on the qualitative pathological... more Background: Tumor classification is inexact and largely dependent on the qualitative pathological examination of the images of the tumor tissue slides. In this study, our aim was to develop an automated computational method to classify Hematoxylin and Eosin (H&E) stained tissue sections based on cancer tissue texture features.
Urology, 2001
Objectives. To evaluate the safety and efficacy of open renal cryoablation of small solid renal m... more Objectives. To evaluate the safety and efficacy of open renal cryoablation of small solid renal masses, since the delivery of freezing temperatures has been shown to effectively ablate solid neoplasms of the liver, uterus, and prostate. Methods. A total of 29 patients were treated with open renal cryoablation since December 1996 and followed up to evaluate the treatment safety and initial radiographic response. Results. The median preoperative lesion size was 2.2 cm, with 22 solid renal masses and 7 complex renal lesions. Five serious adverse events occurred in 5 patients, with only one event directly related to the procedure. One patient experienced a biopsy-proven local recurrence, and 91.3% of patients (median follow-up 16 months) demonstrated a complete radiographic response with only a residual scar or small, nonenhancing cyst.
This study explored the relationship between parenting styles and self-esteem among 1,239 11-to 1... more This study explored the relationship between parenting styles and self-esteem among 1,239 11-to 15-yr.-old Brazilian adolescents (54% girls; M age = 13.4 yr., S!D= 1.4). Teenagers' families were classified into 1 of 4 groups (Authoritative, Authoritarian, Indulgent, or Neglectful) based on adolescents' answers to the ESPA29 Parental Socialization Scale. Participants completed the AF5 Multidimensional Self-Esteem Scale which appraises five dimensions: Academic, Social, Emotional, Family, and Physical. Analyses showed that Brazilian adolescents from Indulgent families scored equal (Academic and Social) or higher (Family) in Self-esteem than adolescents from Authoritative families. Adolescents from Indulgent families scored higher than adolescents from Authoritarian and Neglectful families in four Self-esteem dimensions, Academic, Social, Family, and Physical. Adolescents from Authoritative families scored higher than adolescents from Authoritarian and Neglectful families in three Self-esteem dimensions, Academic, Social, and Family. These results suggest that Authoritative parenting is not associated with optimum self-esteem in Brazil.
Theory and research on social support have paid little attention to the existence of important ma... more Theory and research on social support have paid little attention to the existence of important macrosocial variables determining level and content of social relationships. This study examines variations in social integration as a function of social class and residential area characteristics. Results for 234 subjects living in high and low risk neighbourhoods indicated that differences between higher and lower social class groups follow different patterns in different residential areas. Also, same social class position appeared to have different significance as a function of residential area characteristics. The levels of three social integration measures-community integration and satisfaction, community association and participation, and contribution in community organizations-were significantly higher for lower class in low risk neighbourhoods than in high risk ones. However, significant differences were found in only one measure for higher social class groups, with higher levels of community association and participation in high risk neighbourhoods than in low risk ones. The discussion examines a 'social impoverishment' hypothesis for high risk environments, and proposes possible protective factors for higher status residents. Relations between formal and informal sources of support, and implications for social intervention strategies are also considered.
Una serie de trabajos cuestionan la validez estadística de las p ru ebas para m é t ricas (F y t)... more Una serie de trabajos cuestionan la validez estadística de las p ru ebas para m é t ricas (F y t) en campos de inve s t i gación que hab itualmente emplean intensivamente la metodología ex p e rimental para contrastar sus teorías. Las dudas ap a recen porque la fo rma de esta distri bución no se ajusta a la curva normal. En concreto, el tiempo de re a c c i ó n en las tareas de memoria, atención, decisión léxica, e t c. sigue una distri bución asimétrica positiva, que puede estar asociada al efecto de algunas va ri ables ex t rañas como la distracción, o p ro d u c i rse por la desmotivación del sujeto después de un fracaso en la tarea ex p e rimental. Estas circunstancias implican que algunas obs e rvaciones sean muy ex t remas (tiempos de reacción muy altos) y la fo rma final de la distri bución mu e s t ral re s u l t e, por lo tanto, asim é t rica positiva (véase la exposición de Luce, 1986).
Enviar correspondencia a: Javier Pons Diez. C/ Rafael "el Gallo", 33-8 § . 46014 Valencia. Teléfo... more Enviar correspondencia a: Javier Pons Diez. C/ Rafael "el Gallo", 33-8 § . 46014 Valencia. Teléfono (96)3791575.
sensibilización previa de los sujetos al tratamiento (véase un ejemplo en Sprangers y . El diseño... more sensibilización previa de los sujetos al tratamiento (véase un ejemplo en Sprangers y . El diseño, en su estructura lógico/formal (véase tabla 1), consta de cuatro grupos, de los que dos reciben el tratamiento y los otros dos tienen la consideración de grupos de control y de todos ellos, la mitad pasan por una situación de pretest y la otra mitad no. Huck y Sandler, (1973, p. 54) han señalado que la exposición al pretest incrementa (o disminuye) la sensibilidad de los sujetos al tratamiento, aumentando (o disminuyendo) los efectos estimados de éste, lo que resulta decisivo a la hora de poder generalizar los resultados. Este inconveniente, que afecta tanto al diseño pretest/posttest con grupo de control como al diseño con grupo de control y sólo posttest, es superado en el diseño de cuatro grupos de Solomon al añadir dos El artículo describe la problemática asociada al análisis estadístico del Diseño de Cuatro Grupos de Solomon. Campbell y Stanley (1963) afirmaron que "el diseño de cuatro grupos de Solomon tiene un alto prestigio y representa el primer acercamiento serio al problema de la validez externa". Sin embargo, la aplicación del diseño de cuatro grupos de Solomon ha sido escasa, quizá a causa de la falta de certeza acerca de su tratamiento estadístico (Braver y Braver, 1988). Estos últimos autores han añadido a las anteriores una aproximación meta-analítica que no está exenta de algunas limitaciones, especialmente las referidas al control del error tipo I.
The influence of perceived severity and sense of personal responsibility of police officers on th... more The influence of perceived severity and sense of personal responsibility of police officers on their level of involvement in cases of intimate partner violence against women is analyzed. Three levels of police involvement are considered: low, medium, and high. The sample consists of 143 Spanish police officers. A 2 × 2 × 3 factorial design is conducted to test hypotheses. Effects of perceived severity and personal responsibility are found only at the highest level of police involvement. For low and medium levels of involvement, no differences in perceived severity and personal responsibility of police officers are found.