We estimate conditional duration models to analyse recovery pro-cesses in emerging market economi... more We estimate conditional duration models to analyse recovery pro-cesses in emerging market economies. Our reduced form speci¯cation is parsimonious, as we focus on the e®ect of growth in the US, EU, and Japan on the prospects for recovery in emerging market economies experiencing recessions. In order to assess the robustness and forecast-ing capability of our results, we performed out-of-sample predictions using recently available data pertaining to the economies hit by the Asian crisis. The model successfully predicts the bouncing back of most emerging market economies hit by the Asian crisis, and con¯rms the importance of external factors in recovery processes.
crtrees performs Classification and Regression Trees (see Breiman et al. 1984). The procedure con... more crtrees performs Classification and Regression Trees (see Breiman et al. 1984). The procedure consists of three algorithms: tree-growing, tree-pruning, and finding the honest tree.
This paper studies the wage gap between third-generation Mexican American and non-Hispanic white ... more This paper studies the wage gap between third-generation Mexican American and non-Hispanic white workers in the South-West. I develop a generalized version of Oaxaca wage gap decompositions that can be applied to nomparametric and semiparametric tree structures. The best model in terms of the test sample mean square error is the nomparametric one. This model assigns most of the observed wage gap to three equally important effects: selection bias in the sample, ethnic segregation, and workers' characteristics.
El presente artículo se dirige a analizar algunas condiciones de desigualdad estudiantes indígen... more El presente artículo se dirige a analizar algunas condiciones de desigualdad estudiantes indígenas en el marco de la pandemia ocasionada por el COVID-19 en una universidad pública estatal en México. Se presenta algunos datos del contexto para problematizar sobre dichas desigualdades. A partir de ello se contruyen 3 categorías analíticas para conocer las condiciones de los estudiantes: condiciones generales, condiciones de acceso y condiciones subjetivas. Los datos se obtuvieron a través de un cuestionario que respondieron 104,141 estudiantes de los cuales 968 se autodefinieron como pertenecientes a un pueblo indígena. El estudio muestra las profundas desigualdades que afectan a las minorías étnicas que se intertan como estudiantes a la educación superior, desigualdades que se agravaron en el periodo de la pandemia.
Kaposi's sarcoma is a multicentric, malignant, neoplastic process that manifests itself a... more Kaposi's sarcoma is a multicentric, malignant, neoplastic process that manifests itself as multiple vascular tumors. We present a comparative, retrospective analysis of demographic and survival data involving patients with Kaposi's sarcoma seen at Charity Hospital, New Orleans, over a 35-year period. The proportion of blacks and women is significantly higher than previously reported. Both blacks and men suffered relatively greater morbidity. In addition, the incidence of second primary malignancies in this group of patients is lower than previously reported.
Journal of the American Academy of Dermatology, 1981
Cancer of the skin, in general, is believed to be rather uncommon in black persons. Information f... more Cancer of the skin, in general, is believed to be rather uncommon in black persons. Information from the Tumor Registry of Charity Hospital of Louisiana in New Orleans was reviewed in reference to black patients who were diagnosed as having squamous cell carcinoma (SCC) of the skin between 1948 and 1979. During this period, 163 black patients had a total of 176 SCCs of the skin. The lesions were about 20% more common than basal cell carcinomas (BCCs) in blacks of the same patient population. A mortality of 18.4% was a significant finding. The most common sites of involvement were the face and the lower extremity. Collectively, involvement of the non-sun-exposed areas was more common. The most common predisposing conditions were scarring processes.
To report the unusual presentation of bilateral Schwalbe rings suspended in the anterior chambers... more To report the unusual presentation of bilateral Schwalbe rings suspended in the anterior chambers of a patient with Axenfeld-Rieger syndrome. A 37-year-old man with bilateral decreasing visual acuity underwent slit-lamp examination, dark room gonioscopy, and photographic documentation. Prominent bilateral Schwalbe rings and peripheral iridocorneal strands were observed in both anterior chambers. No systemic abnormalities were found. The position of the Schwalbe ring in patients with Axenfeld-Rieger syndrome can vary in appearance from almost normal to displaced markedly. It remains to be seen whether these variations reflect genetic differences.
We estimate conditional duration models to analyse recovery pro-cesses in emerging market economi... more We estimate conditional duration models to analyse recovery pro-cesses in emerging market economies. Our reduced form speci¯cation is parsimonious, as we focus on the e®ect of growth in the US, EU, and Japan on the prospects for recovery in emerging market economies experiencing recessions. In order to assess the robustness and forecast-ing capability of our results, we performed out-of-sample predictions using recently available data pertaining to the economies hit by the Asian crisis. The model successfully predicts the bouncing back of most emerging market economies hit by the Asian crisis, and con¯rms the importance of external factors in recovery processes.
crtrees performs Classification and Regression Trees (see Breiman et al. 1984). The procedure con... more crtrees performs Classification and Regression Trees (see Breiman et al. 1984). The procedure consists of three algorithms: tree-growing, tree-pruning, and finding the honest tree.
This paper studies the wage gap between third-generation Mexican American and non-Hispanic white ... more This paper studies the wage gap between third-generation Mexican American and non-Hispanic white workers in the South-West. I develop a generalized version of Oaxaca wage gap decompositions that can be applied to nomparametric and semiparametric tree structures. The best model in terms of the test sample mean square error is the nomparametric one. This model assigns most of the observed wage gap to three equally important effects: selection bias in the sample, ethnic segregation, and workers' characteristics.
El presente artículo se dirige a analizar algunas condiciones de desigualdad estudiantes indígen... more El presente artículo se dirige a analizar algunas condiciones de desigualdad estudiantes indígenas en el marco de la pandemia ocasionada por el COVID-19 en una universidad pública estatal en México. Se presenta algunos datos del contexto para problematizar sobre dichas desigualdades. A partir de ello se contruyen 3 categorías analíticas para conocer las condiciones de los estudiantes: condiciones generales, condiciones de acceso y condiciones subjetivas. Los datos se obtuvieron a través de un cuestionario que respondieron 104,141 estudiantes de los cuales 968 se autodefinieron como pertenecientes a un pueblo indígena. El estudio muestra las profundas desigualdades que afectan a las minorías étnicas que se intertan como estudiantes a la educación superior, desigualdades que se agravaron en el periodo de la pandemia.
Kaposi's sarcoma is a multicentric, malignant, neoplastic process that manifests itself a... more Kaposi's sarcoma is a multicentric, malignant, neoplastic process that manifests itself as multiple vascular tumors. We present a comparative, retrospective analysis of demographic and survival data involving patients with Kaposi's sarcoma seen at Charity Hospital, New Orleans, over a 35-year period. The proportion of blacks and women is significantly higher than previously reported. Both blacks and men suffered relatively greater morbidity. In addition, the incidence of second primary malignancies in this group of patients is lower than previously reported.
Journal of the American Academy of Dermatology, 1981
Cancer of the skin, in general, is believed to be rather uncommon in black persons. Information f... more Cancer of the skin, in general, is believed to be rather uncommon in black persons. Information from the Tumor Registry of Charity Hospital of Louisiana in New Orleans was reviewed in reference to black patients who were diagnosed as having squamous cell carcinoma (SCC) of the skin between 1948 and 1979. During this period, 163 black patients had a total of 176 SCCs of the skin. The lesions were about 20% more common than basal cell carcinomas (BCCs) in blacks of the same patient population. A mortality of 18.4% was a significant finding. The most common sites of involvement were the face and the lower extremity. Collectively, involvement of the non-sun-exposed areas was more common. The most common predisposing conditions were scarring processes.
To report the unusual presentation of bilateral Schwalbe rings suspended in the anterior chambers... more To report the unusual presentation of bilateral Schwalbe rings suspended in the anterior chambers of a patient with Axenfeld-Rieger syndrome. A 37-year-old man with bilateral decreasing visual acuity underwent slit-lamp examination, dark room gonioscopy, and photographic documentation. Prominent bilateral Schwalbe rings and peripheral iridocorneal strands were observed in both anterior chambers. No systemic abnormalities were found. The position of the Schwalbe ring in patients with Axenfeld-Rieger syndrome can vary in appearance from almost normal to displaced markedly. It remains to be seen whether these variations reflect genetic differences.
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Papers by Ricardo Mora