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El bruxismo es un trastorno de la articulación temporomandibular asociado a ansiedad. Para su manejo se indica el uso de guarda oclusal. La terapia manual representa un tratamiento complementario con potencial para disminuir síntomas como dolor, nivel de ansiedad y mejorar la calidad de vida. Estudio de tipo ensayo clínico prospectivo en pacientes adultos con diagnóstico de bruxismo. Se dividió la población en grupo de estudio (manejo de terapia manual y uso de guarda oclusal) y grupo control (uso de guarda oclusal) dando seguimiento durante 10 sesiones. Todo el grupo de estudio disminuyo el dolor de la articulación temporomandibular, 28.8% disminuyo su puntaje a leve y 15% a remisión en escala de HARS. El grupo control no tuvo diferencia significativa en SF-36. La terapia manual aunada al uso de guarda oclusal logró efectos positivos en síntomas asociados a bruxismo y ansiedad.

Propósito: El principal factor que contribuye al desarrollo socioeconómico de un territorio local es el emprendimiento; lamentablemente, los emprendimientos de Latinoamérica tienen altas de tasas de fracaso durante los primeros 5 años de funcionamiento, no logrando superar el denominado “Valle de la muerte”. Este artículo tiene como objetivo descubrir cómo la literatura explica este fenómeno, mapeando el conocimiento actual e identificando vacíos en la literatura relevante.Diseño / metodología / enfoque: Se realiza un análisis bibliométrico para la construcción del estado del arte partiendo de una ecuación de búsqueda elaborada con la técnica Citation Pearl Growing, la cual se ingresa a los indexadores SCOPUS y Web of Science, para posteriormente realizar el estudio de coocurrencia de las palabras claves con el software VOSviewer®. Como resultado, se realiza el análisis de contenido de 91 artículos con ATLAS.ti®.Hallazgos: La revisión permite clasificar tres clúster: valle de la muerte, causas del valle de la muerte y cómo superar el valle de la muerte, identificando y plasmando en este artículo la percepción de varios autores.Aún existen vacíos en la literatura y este trabajo permitirá a los investigadores, legisladores y emprendedores tener un acercamiento a la información y el conocimiento científico actualizado, y continuar con su desarrollo, permitiendo identificar las causas y posibles maneras de afrontar este fenómeno.Originalidad / valor: Este documento ofrece un mapeo de información y el conocimiento científico relacionado al valle de la muerte que hace referencia a la etapa temprana en la cual los emprendimientos se encuentran más vulnerables y tienden al fracaso.

Background: Breast cancer incidence in the United States is lower in Hispanic/Latina (H/L) compared with African American/Black or Non-Hispanic White women. An Indigenous American breast cancer–protective germline variant (rs140068132) has been reported near the estrogen receptor 1 gene. This study tests the association of rs140068132 and other polymorphisms in the 6q25 region with subtype-specific breast cancer risk in H/Ls of high Indigenous American ancestry. Methods: Genotypes were obtained for 5,094 Peruvian women with (1,755) and without (3,337) breast cancer. Associations between genotype and overall and subtype-specific risk for the protective variant were tested using logistic regression models and conditional analyses, including other risk-associated polymorphisms in the region. Results: We replicated the reported association between rs140068132 and breast cancer risk overall [odds ratio (OR), 0.53; 95% confidence interval (CI), 0.47–0.59], as well as the lower odds of developing hormone receptor negative (HR−) versus HR+ disease (OR, 0.77; 95% CI, 0.61–0.97). Models, including HER2, showed further heterogeneity with reduced odds for HR+HER2+ (OR, 0.68; 95% CI, 0.51–0.92), HR−HER2+ (OR, 0.63; 95% CI, 0.44–0.90) and HR−HER2− (OR, 0.77; 95% CI, 0.56–1.05) compared with HR+HER2−. Inclusion of other risk-associated variants did not change these observations. Conclusions: The rs140068132 polymorphism is associated with decreased risk of breast cancer in Peruvians and is more protective against HR− and HER2+ diseases independently of other breast cancer-associated variants in the 6q25 region. Impact: These results could inform functional analyses to understand the mechanism by which rs140068132-G reduces risk of breast cancer development in a subtype-specific manner. They also illustrate the importance of including diverse individuals in genetic studies.

Association between ER/PR/HER2 defined groups and Indigenous American genetic ancestry including stage and region of residence as covariates

Women of Latin American origin in the United States are more likely to be diagnosed with advanced breast cancer and have a higher risk of mortality than non-Hispanic White women. Studies in U.S. Latinas and Latin American women have reported a high incidence of HER2 positive (+) tumors; however, the factors contributing to this observation are unknown. Genome-wide genotype data for 1,312 patients from the Peruvian Genetics and Genomics of Breast Cancer Study (PEGEN-BC) were used to estimate genetic ancestry. We tested the association between HER2 status and genetic ancestry using logistic and multinomial logistic regression models. Findings were replicated in 616 samples from Mexico and Colombia. Average Indigenous American (IA) ancestry differed by subtype. In multivariate models, the odds of having an HER2+ tumor increased by a factor of 1.20 with every 10% increase in IA ancestry proportion (95% CI, 1.07–1.35; P = 0.001). The association between HER2 status and IA ancestry was independently replicated in samples from Mexico and Colombia. Results suggest that the high prevalence of HER2+ tumors in Latinas could be due in part to the presence of population-specific genetic variant(s) affecting HER2 expression in breast cancer.Significance:The positive association between Indigenous American genetic ancestry and HER2+ breast cancer suggests that the high incidence of HER2+ subtypes in Latinas might be due to population and subtype-specific genetic risk variants.

The objective of the work was to validate the technical and economic efficiency of thinning to increase the size and weight of mangosteen fruits. The validation was carried out in 2021, in two commercial plantations of mangosteen 10 and 13 years old located in the municipalities of Tapachula, and Tuxtla Chico, Chiapas, Mexico, respectively. The factors in study are thinning with two levels: thinned 30% and unthinned (control) and three initial fruiting ranges (RFI): 80-120 fruits; 121 to 160 fruits and> 160 fruits. By combining the study factors, 6 treatments were formed: RFI 80-120-thinned; RFI 121-160-thinned; RFI >160-thinned; RFI 80-120-unthinned RFI 121-160-unthinned and RFI >160-unthinned. A completely random design with four repetitions was used. The experimental unit consisted of a tree, with a total of 24 trees in 0.14 ha in each plantation under study. The study variables were yield/tree; fruit weight and fruits/tree. The economic comparison between treatments was made and the return to capital (cost-benefit ratio) of them was calculated. In both plantations evaluated, a significant statistical difference was found in fruits/tree, fruit weight, yield/tree and yield/ha. The highest average weight of the fruits (> 76 g in accordance with the requirements of international markets.) and percentage of them, is obtained in trees thinned. The highest cost-benefit ratio (4.5 in Tuxtla Chico plantation and 2.3 in Tapachula plantation), was obtained in RFI >160 thinned treatment.

Sustainability, entrepreneurship and tourism, destination and hospitality research have attracted scholars’ attention for their relevance in bringing to fruition a future that links economic well-being with the environmental, cultural, and social sustainability of human beings. This article provides a bibliometric overview of the academic research where these topics intersect. To accomplish this, various bibliometric methods are implemented, which include a performance analysis and graphic mapping of the academic production in this specific topic. This research uses the Web of Science database to identify and classify the most preponderant investigations in the field and considers articles, authors, institutions, countries, and journals. To complete the performance analysis, a series of indicators, such as number of papers and number of citations, are used. Graphic visualization maps are produced using the co-citation and co-occurrence of keywords under the Visualization of Similarities—VOSviewer—software. The results show a growing concern for entrepreneurship in sustainable tourism development research, which is evidenced in the increasing number of studies during the last decade. Some influential research institutions and authors from countries including the USA, New Zealand, and Norway are found to be influential leaders in this topic. Additionally, the results show that journals from the area of hospitality, leisure, sport, and tourism are frontrunners in this subject.

The purpose of this research is to examine whether insurers have improved their economic performance through efficiency as a reaction to the prolonged period of low interest rates. The results of an analysis of 22 years of data, using a two-stage data envelopment analysis approach (DEA), show that there is an inverse relationship between efficiency and interest rate. The non-life insurance group had a superior level of efficiency compared with that of the life insurance group. It seems that life insurance companies, to some extent, transferred their inefficiency to customers to maintain their solvency. Additionally, this research shows that companies with substantial market power and bancassurance exceeded the performance of the rest of the industry.

A specific challenge related to infrastructure creation that is faced by several countries has to do with the lack of participation to an optimal level of subnational governments in the development of Public Private Partnership (PPP) projects which, in turn, could offset the existing infrastructure limitations. In this article, we analyze the Mexican case, whose main feature is that, despite implementing the PPP scheme for almost 10 years and having technical assistance from international organizations to establish the required institutional framework (i.e. legal and technical dimensions), local governments have not been able to create the necessary competencies to carry out this type of project. In order to assess local governments on this subject, we conducted an analysis based on the model designed by the OECD in relation to the execution of PPP projects. A proposal to explain the lack of local government participation in PPP schemes, rests on the foundations of so-called “subnational authoritarianism.”

Given the importance of social capital in organizations, this research answers the question of how socioemotional wealth importance (SEWi), family human capital and family social capital influence organizational social capital in small family firms. Based on a sample of 334 small family businesses from the Biobio Region in Chile, a partial least squares structural equation modeling analysis (PLS-SEM) was performed. The results do not provide support for the predicted direct influence of family social capital on organizational social capital, but they support an indirect influence through SEWi and family human capital, both of which have a direct and positive influence on family firms’ organizational social capital. This means that SEWi and family human capital play a central role in generating organizational social capital in small family firms. It also suggests that both ability and willingness of family businesses play a role in allowing these firms to successfully transfer social capital from the family to the business system.

En este trabajo se identifican los cambios de uso del suelo y cubierta vegetal durante el periodo 2000-2017, y sus impactos sobre la escorrentia potencial de la cuenca Chuviscar-Sacramento (Chihuahua Mexico). Se generaron mapas de uso del suelo para cada ano mediante clasificacion espectral y se modelizo el escurrimiento mediante el metodo de Numero de Curva considerando eventos de lluvia de 62 y 88 mm en 24 horas. Los resultados muestran la perdida de coberturas naturales y su sustitucion por coberturas antropizadas, asi como un incremento de la escorrentia total en el periodo analizado. Tambien sugieren que los impactos hidrologicos del cambio de coberturas son muy heterogeneos espacialmente, pues se incremento la escorrentia en ciertas zonas de la cuenca, pero disminuyo en otras. La modelizacion permite identificar uno de los impactos hidrologicos mas relevantes del cambio de uso del suelo en el funcionamiento de la cuenca, facilitando la gestion ambiental de los distintos usos del suelo.

Purpose: Breast cancer incidence and outcomes differ by US census racial/ethnic category. Since large-scale genetic studies of human disease are predominately focused on populations of European ancestry, little is known about breast cancer molecular biology in Hispanic/Latinos which can widen cancer health disparities due to suboptimal translation of discoveries into clinical practice or public health policy. We aim to describe relevant pathways in breast cancer subtype differentiation in breast cancer patients from Peru. Patients and Methods: Formalin fixed paraffin embedded tumor tissues samples were whole exome sequenced for a total of 271 patients, recruited by the Peruvian Breast Cancer Genomics Study (PEGEN-BC) from the Instituto Nacional de Enfermedades Neoplásicas (INEN) in Lima, Peru. Quality control was conducted to remove genes with low counts. Intrinsic tumor subtypes were classified using the PAM50 method using genefu package in R. Differential gene expression between subtypes was performed by DEseq2 R package and statistical significance was determined using FDR Results: The mean age of patients was 50 and the median Indigenous American ancestry was 79%. PAM50 classification of the sequenced samples defined 20.2% of tumors as LumA, 27.9% as LumB, 27.1% as HER2, 22.5% as Basal and 2.3% as Normal. Transcriptomic pathway analysis showed that most of the significantly changed pathways were similar to those previously described such as upregulation of high proliferation pathways in LumB, HER2E and Basal tumors, and a strong dependency on the estrogen pathway for LumA. Top 10 significantly changed pathways show some unique findings: the epithelial-mesenchymal-transition (EMT) pathway is downregulated in Basal, comparing to LumA and HER2 tumors, which is unexpected given that the EMT is associated with stem cell features and poor outcomes. The E2F-targets pathway is upregulated in LumA when comparing to HER2 tumors, but downregulated when compared to Basal tumors. Conclusions: We identified novel pathways associated with breast cancer subtypes in individuals with high Indigenous American ancestry from Peru and are working on testing the robustness of these findings. If our findings are confirmed, results would suggest a more aggressive profile of Luminal subtypes in the studied samples from Peru, with implications for treatment and survival. Citation Format: Chenghuiyun Xu, Valentina A. Zavala-Cordero, Xiaosong Huang, David M. Rocke, Sandro Casavilca-Zambrano, Jeannie M. Navarro-Vásquez, Carlos A. Castañeda, Guillermo Valencia, Zaida Morante, Monica Calderón, Julio E. Abugattas, Henry Gómez, Hugo A. Fuentes, Ruddy Liendo-Picoaga, Jose M. Cotrina, Silvia P. Neciosup, Katia Roque, Jule Vásquez, Luis Mas, Marco Gálvez-Nino, Jovanny Zabaleta, Tatiana Vidaurre, Laura Fejerman. Transcriptome-wide study of tumor samples from Peruvian women identifies dysregulated pathways in luminal tumors typically associated with more aggressive disease. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 5235.

Breast cancer subtype distribution differs between populations with dissimilar genetic ancestry backgrounds. Several breast cancer risk single nucleotide polymorphisms (SNPs) were discovered in individuals of European and Asian origin. Hispanic/Latina women remain underrepresented in studies and public databases. The 6q25 locus contains multiple breast cancer risk-associated SNPs. Some SNPs within this region have been associated with the expression of genes (eQTLs), such as the Estrogen Receptor 1 gene (ESR1). Two breast cancer genetic association studies in Hispanics/Latinas identified two SNPs (rs140068132 and rs3778609), near ESR1, that correlate with Indigenous American ancestry and reduce the odds of breast cancer, especially for Estrogen Receptor-negative (ER-) disease. The underrepresentation of Latin American populations in public databases has hindered the study of the mechanisms by which these SNPs confer a protective effect. We integrated genetic and transcriptomic data from breast cancer patients with high Indigenous American ancestry to test the association between the protective variants in the 6q25 region and tumor gene expression. Breast cancer patients were recruited at the National Cancer Institute in Peru to be part of The Peruvian Genetics and Genomics of Breast Cancer Study (PEGEN-BC, N=1809). Healthy women from a pregnancy outcomes study in Peru were included as controls (N=3334). Genome-wide genotype data were available and missing genotypes were imputed using the TOPMED Imputation Server to perform fine-mapping within the 6q25 locus. Logistic regression was used to test the association between each SNP and breast cancer risk. We exome-sequenced 155 breast tumors of these patients. Transcripts per million counts and imputed genotypes within the 6q25 region were used for eQTL analysis. Colocalization was performed using summary statistics from the fine-mapping and eQTL analysis, including SNPs with minor allele frequency >5%. Only two SNPs, rs140068132 and rs851984 were independently associated with breast cancer risk, as we previously reported. eQTL signals colocalized with the subregion in 6q25 that contains these breast cancer-associated SNPs. Within this subregion, the gene with more eQTLs using a nominal p-value of Citation Format: Valentina A. Zavala, Xiaosong Huang, Sandro Casavilca-Zambrano, Jeannie Navarro-Vásquez, Carlos A. Castañeda, Guillermo Valencia, Zaida Morante, Monica Calderon, Julio E. Abugattas, Henry Gómez, Hugo A. Fuentes, Ruddy Liendo-Picoaga, Jose M. Cotrina, Silvia Neciosup, Katia Roque, Jule Vásquez, Luis MAs, Marco Gálvez-Nino, Sixto E. Sánchez, Michelle A. Williams, Elad Ziv, Jovanny Zabaleta, Bizu Gelaye, Tatiana Vidaurre Vidaurre, Laura Fejerman. Breast cancer risk in Hispanic/Latina women and the 6q25 chromosomal region: Fine mapping and eQTL identification [abstract]. In: Proceedings of the 15th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2022 Sep 16-19; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2022;31(1 Suppl):Abstract nr C082.

Por encima de la noción biológica y genética generadora de mimesis que se atribuye a Richard Dawkins, para explicar el fenómeno contemporáneo del e-meme, y más allá de la manera en que Pérez Salazar define a estas imágenes dotadas de humor como “expresiones de cultura popular”; este trabajo parte de dos bases principales sobre las cuales deriva este arte crítico, primero, el malestar por la injusticia, el cinismo y la barbarie; y segundo, el nivel de la mirada y posicionamiento del exiliado con la que un compositor le abre paso a la verdad desde su procedencia, en medio de la selva en tempestad en que prevalece la incongruencia y sinrazón de la realidad. Georges Didi-Huberman, filósofo y prestigioso historiador del arte contemporáneo, inspirado principalmente en los testimonios de Bertolt Brecht, dramaturgo y poeta, y en segundo lugar imbuido por Walter Benjamin, filósofo, escritor y fotógrafo; este texto da cuenta del camino metodológico que siguió el artista durante la persecución que sufrió en tiempos de la Segunda Guerra Mundial, para erigir fotoepigramas, cuyo proceso es familiarmente similar a los actuales e-memes, en cuyos contenidos el panorama político, así como el humor irónico y crítico constituyen una constante combativa, que adquiere comunión generalizada, como si se tratase de un efecto multiplicador, cuyo origen recae en el malestar.

Knowledge management (KM) is a field of research that has gained wide acceptance in the scientific community and management literature. This article presents a bibliometric overview of the academic research on KM in the business and management areas. Various bibliometric methods are used to perform this overview, including performance analysis and science mapping of the KM field. The performance analysis uses a series of bibliometric indicators, such as the h-index, productivity and citations. In addition, the VOSviewer software is used to map the bibliographic material. Science mapping uses co-citations and the concurrency of keywords. References were obtained from the Web of Science database. We identified and classified the most relevant research in the field according to journals, articles, authors, institutions and countries. The results show that research in this field has increased significantly in the last ten years and that the USA is the most influential country in all aspects in this field. It is important to consider, however, that science continues to advance in this and in all fields and that data rapidly change over time. Therefore, this paper fulfills an informational role that shows that most of the fundamental research of KM is in business and management areas.

Long Range Planning (LRP) is the first journal focused on strategic planning. It was created in 1968 by the Long Range Planning Society, and it celebrated its 50th anniversary in 2018. This event led to the presentation of a complete bibliometric study aimed at identifying the most significant results that occurred in the journal during this period. For this purpose, bibliometric data were collected from the Web of Science Core Collection database, and two bibliometric approaches were used to analyze the journal's publications: a performance analysis and a graphical mapping of the literature. The first of these uses a wide range of productivity and influence indicators that include the number of publications and citations, the h-index, and citations by paper, among others. The second approach uses the VOSviewer software to deliver a graphical view of the various intellectual connections within LRP. The results of both bibliometric approaches are consistent and confirm LRP as a leading journal in strategic planning and management, with increasing participation of authors and universities from countries around the world.

Anagroforestry system was established in steeplands of the municipality of Tezonapa Veracruz, Mexico, with objective of evaluating its efficiency in soil conservation. The component species of the system were mahogany (Swietenia macrophylla), cedar tree (Cedrelaodorata), teak (Tectonagrandis), orange (Citrus sinensis), lemon (Citrus latifolia), cinnamon (Cynnamomunzeylanicum), corn (Zea mays), and biological barriers to the contour (BBC) of vetiver grass (Vetiveria zizanioides). In agroforestry system, the annual soil erosion rate was reduced by 66% compared to the traditional system used for maize production.

Emotions are considered a fundamental aspect of sport scenarios, and within sports, consumer behavior is a very popular area of research in the sport management field. Thus, in recent years, there has been a growing interest for sport managers regarding the role that emotions play in sport consumer behavior. Thus, the aim of this paper is to provide an overview of the academic research on emotions in the sport management field using two techniques: a bibliometric performance analysis and a graphic mapping of the references in this field. This analysis focuses on authors, journals, papers, institutions and countries. Bibliometric indicators including the h-index measure, productivity and the number of citations were used to perform the performance analysis. Then, VOSviewer software was used to perform co-citation, bibliographic coupling and co-occurrence of keyword analysis (mapping analysis). The results of both types of analysis are consistent, with the United States being the most influential country in emotions in sport management research because the main authors and institutions in this research field belong to this country. The overall results indicate that the literature on this research topic has grown significantly in recent years in all scientific disciplines; however, the research topic is incipient, and therefore, the number of articles is still limited. Thus, this research presents the key aspects in the topic of emotions in sport management that could be helpful for researchers and policy makers in the field of sport management to make future decisions.

The purpose of this paper is to compare the influence of entrepreneurs’ human and relational capital on the rapid internationalization of their firms from two economically different contexts.,This study was developed using data that were collected from the Global Entrepreneurship Monitor of Spain and Chile. A logistic regression analysis was used to examine and compare the influence of some elements of entrepreneurs’ human and relational capital on the likelihood of their firms’ rapid internationalization.,The results revealed that Chilean entrepreneurs rely more on their formal education or experience to rapidly internationalize their firms. In contrast, Spanish entrepreneurs complement their formal education with their relational capital to conduct international entrepreneurial activities.,The implications of this study are related to the role that public policies play in promoting these types of entrepreneurial initiatives.,This study presents several contributions. First, it advances the understanding of entrepreneurial internationalization in emerging economic contexts. Second, it provides a comparative study regarding entrepreneurial internationalization, which is considered a fundamental current in the field of international entrepreneurship. Finally, this comparative study improves our understanding of the influence of different economic contexts on entrepreneurial internationalization.,El objetivo de este trabajo es comparar la influencia del capital humano y relacional de los emprendedores de dos contextos economicamente diferentes sobre la rapida internacionalizacion de sus empresas.,Este estudio se desarrollo utilizando datos recopilados del Global Entrepreneurship Monitor (GEM) de Espana y Chile. Se utilizo un analisis de regresion logistica para examinar y comparar la influencia de algunos elementos del capital humano y relacional de los emprendedores sobre la probabilidad de que lleven a cabo una rapida internacionalizacion de sus empresas.,Los resultados revelaron que los emprendedores chilenos dependen mas de su educacion formal o experiencia para internacionalizar rapidamente sus empresas. Por el contrario, los emprendedores espanoles complementan su educacion formal con su capital relacional para llevar a cabo actividades empresariales internacionales.,Las implicaciones de este estudio estan relacionadas con el rol que juegan las politicas publicas en la promocion de este tipo de iniciativas emprendedoras.,Este estudio presenta varias contribuciones. Primero, avanza en la comprension de la internacionalizacion emprendedora en contextos economicos emergentes. En segundo lugar, proporciona un estudio comparativo sobre la internacionalizacion emprendedora, que se considera una corriente fundamental en el campo del Emprendimiento Internacional. Finalmente, este estudio comparativo mejora la comprension de la influencia de los diferentes contextos economicos en la internacionalizacion emprendedora.

El objetivo de esta investigación es proponer el concepto de innovación ligera el cual tenga un alcance más integral y holístico sobre las innovaciones no intensivas. Se hace una revisión conceptual sobre la innovación frugal, innovación inversa e innovación blanda como innovaciones no intensiva. El resultado de la revisión conceptual es la definición de la innovación ligera y proponer su enfoque sistémico. Esta nueva aproximación introduce una definición con una visión más holística e integral sobre las innovaciones no intensivas. Así mismo, el enfoque nos permite determinar las dinámicas e influencias de la generación de las innovaciones ligeras en diversos niveles y factores determinantes para su desarrollo. Finalmente, la definición y el enfoque sistémico permiten identificar cuáles son los factores claves en el proceso de innovaciones ligeras y puede ser utilizado como herramienta de ayuda para medir estos tipos de innovación a nivel empresarial y académico.

A pesar de que las reformas institucionales que afectan el funcionamiento de los mercados electricos de Mexico y Espana son recientes, se pueden extraer reflexiones interesantes con base en la discusion respecto a las condiciones que debe tener un diseno institucional adecuado para promover la competencia. En el presente articulo se analizan las reformas recientes que se han implantado tanto en Mexico como en Espana en sus respectivos sectores electricos. Se comparan los disenos institucionales de ambos paises a raiz de su nueva legislacion y se analiza la conveniencia de fusionar diversos organismos reguladores sectoriales entre ellos y con la autoridad encargada de promover la competencia. Clasificacion JEL: D02, K21, K23, L40, L50 Abstract Even though the institutional reforms of the electricity markets of Mexico and Spain have had a short time of implementation, we can obtain interesting reflections based on the discussion regarding the conditions that an adequate institutional design must have in order to promote competition. In this article we analyze the recent reforms that have been implemented both in Mexico and in Spain in their respective electric sectors. The institutional designs of both countries are compared according to the new legislations and the convenience of merging various sectoral regulatory bodies among them and with antitrust authorities is discussed.

Con el objetivo de identificar la influencia de Glomus intraradices y la composta de caña sobre rendimiento de Jatropha curcas L. en condiciones de campo, se estableció el presente experimento en un suelo de baja fertilidad en Cotaxtla Veracruz durante el invierno de 2008. El piñón se propagó en vivero con semilla colectada en el estado de Veracruz. Se trasplantaron al terreno cuando tenían 20 cm de altura en plantación de marco real a distancia de 3 x 3 m. Se establecieron cuatro tratamientos distribuidos en bloques al azar con cuatro repeticiones; testigo, 40 g de Glomus intraradices por planta, 1 kg de composta de caña, y 40 g Glomus intraradices + 1 kg de composta de caña, en diseño de bloque al azar con cuatro repeticiones. La aplicación de tratamientos fue al momento del trasplante a campo. La unidad experimental se conformó de diez plantas. Se evaluó grosor de tallo y otras variables fisiológicas del rendimiento a los 6, 12, 20 y 26 meses, que corresponden a 180, 365, 680 y 780 días después de la siembra (dds). Los resultados indican diferencias estadísticas significativas en todas las variables para los tratamientos micorrizados con y sin la adición de composta de caña. Se concluye que la inoculación de Jatropha curcas L. con Glomus intraradices promueve mayor número de frutos y peso de semillas. La combinación del hongo micorrízico y composta de caña, son una base para incrementar el rendimiento de Jatropha.

© 2018, Springer Science+Business Media, LLC, part of Springer Nature. The aim of this paper is to provide an overview of the academic research on International Entrepreneurship (IE). To accomplish this, an exhaustive bibliometric analysis was carried out, involving a bibliometric performance analysis and a graphic mapping of the references in this field. Our analysis focuses on journals, papers, authors, institutions and countries. To perform the performance analysis, the work uses a series of bibliometric indicators such as h-index, productivity and citations. Furthermore, the VOS viewer to graphically map the bibliographic material is used. The graphical analysis uses co-citation, bibliographic coupling and co-occurrence of keywords. The results of both analyzes are consistent among them, and show that the USA is the most influential country in IE research as it houses the main authors and institutions in this research field. Moreover, is observed and expected the continued growth of the field globally. Our research plays an informative and complementary role as it presents most of the key aspects in International Entrepreneurship research.

OBJECTIVE Deficits in emotion regulation (ER) skills are discussed as a transdiagnostic factor contributing to the development and maintenance of various mental disorders. However, systematic comparisons of a broad range of ER skills across diagnostic groups that are based on comparable definitions and measures of ER are still rare. METHOD Therefore, we conducted two studies assessing a broad range of ER skills with the Emotion Regulation Skills Questionnaire in individuals meeting criteria for mental disorders (N1 = 1448; N2 = 137) and in a general population sample (N = 214). RESULTS Consistent across the two studies, participants in the clinical samples reported lower general and lower specific ER skills than participants in the general population sample. Also consistent across the two studies, diagnostic subgroups of the clinical samples differed significantly with regard to general and specific ER skills. CONCLUSION The studies provide evidence that deficits in ER are associated with various forms of psychopathology. However, mental disorders seem to differ with regard to how strongly they are linked to ER skills.

In Mexico, the low participation of insurance activity in national production, in contrast to similar Latin American economies, is a concern. Industry’s regulator promoted more intense competition at the dawn of the century. Was deregulation followed by improvements in the financial and economic performance of Mexican insurance firms? The purpose of this paper is to answer this question through a comprehensive analysis of cost variations in an intertemporal manner, by breaking them down into the economic sources that produce them, including productivity. Cost frontier estimation was grounded in a joint production technology of desirable and undesirable outputs, modeled in an input-oriented fashion. Our results demonstrate that even though some companies achieved cost reductions from technological progress or improvements in efficiency, the Mexican insurance market does not show signs of significant productivity gains.