Estrategia de marketing de guerrilla como factor de desarrollo de la competitividad: restaurantes de la zona metropolitana de Guadalajara, México

La pérdida de efectividad de las estrategias de comunicación tradicionales ha llevado a muchas empresas a aplicar el denominado “marketing de guerrilla”. Una estrategia caracterizada por el uso de la creatividad y el ingenio, tratando de reducir la utilización de recursos financieros. El objetivo de este trabajo es analizar los factores de influencia de la estrategia de marketing de guerrilla en el desarrollo de la competitividad de las empresas, en el sector de la restauración de la zona metropolitana de Guadalajara (México). Para alcanzar el objetivo, se implementó un cuestionario estructurado a los encargados de la toma de decisiones de marketing de los restaurantes, durante los meses de septiembre y octubre de 2016. Los resultados permiten concluir que el factor “efecto difusión” es el que más influye sobre el desarrollo de la competitividad, seguido del “efecto bajos costos” y el “efecto sorpresa”.The loss of effectiveness of traditional communication strategies has led many companies to apply the so-called "guerrilla marketing". A strategy characterized by the use of creativity and ingenuity, trying to reduce the use of financial resources. The objective of this work is to analyze the influence factors of the guerrilla marketing strategy in the development of the competitiveness of catering companies in the metropolitan area of Guadalajara, Mexico. In order to achieve this objective, a structured questionnaire was completed by the marketing decision makers of the restaurants, during the months of September and October 2016. The results show that the factor "diffusion effect" is the one that influences the most on the development of competitiveness, followed by the "low-cost effect" and "surprise effect"

Riego, densidad de plantas y fertilización nitrogenada en producción de maíz híbrido en Zacatecas

In the semiarid highlands of Mexico, rainfall has an erratic distribution and therefore, maize and bean yields are low. In this region the rainfall season may be classified as “normal” or “delayed”, according to the onset of the rainy season. Whenever sowing time has to be delayed due to the late onset of rains, the risk of drought and crop damage by low temperatures increases. The objective of this research was to evaluate and promote possible alternative crops under normal and late rainfall, with and without supplemental irrigation to reduce production risks in rainfed areas. The experiment was established in two locations, Sandovales and Montoya in the county of El Llano, Aguascalientes, during 1999 and 2000. Three factors were evaluated: a) alternative crops: barley, oat, triticale, wheat, and chickpea with dry beans and maize as controls; b) sowing dates: normal and delayed; and c) soil moisture regimes: rainfall with and without supplemental irrigation. In both years the onset of rains was normal. Dry matter and grain yield were recorded. Results indicated that soil moisture conditions were more favorable in the first sowing date in both years and sites, which was reflected in higher dry matter and grain yield; a similar response was observed with supplemental irrigation in both planting dates. The alternative crops showed tolerance to low temperatures. Maize for forage production is a good option under normal planting with or without supplemental irrigation, and although it is still a good option under delayed planting, oat or triticale can also be good alternatives. Crops having a long growth cycle such as maize and chickpeas have a higher risk for grain production under delayed planting dates. Dry beans and oat for grain production showed good response under normal planting with or without supplemental irrigation.En la región del Altiplano Semiárido de México las lluvias tienen distribución errática y el rendimiento del maíz y frijol es bajo. El temporal, según el inicio de las lluvias en la región, se puede clasificar en normal y tardío. Las siembras que se realizan en fechas tardías incrementan el riesgo por sequía y por bajas temperaturas durante el desarrollo de los cultivos. El objetivo de la investigación fue evaluar diversos cultivos en temporal normal y tardío, con y sin riego de auxilio, para reducir los riesgos de producción en las áreas de temporal del Altiplano Semiárido de México. Los experimentos se establecieron en Sandovales y Montoya en el municipio de El Llano, Aguascalientes, México, en los ciclos 1999 y 2000. Se evaluaron tres factores: a) cultivos alternativos: cebada, avena, triticale, trigo, garbanzo y los testigos frijol y maíz; b) fechas de siembra: temporal normal y temporal tardío y c) niveles de humedad: temporal solo y temporal más un riego de auxilio. En todos los cultivos se determinó la producción de materia seca y grano. Las condiciones de humedad fueron más favorables en la época de siembra normal en ambos años y sitios, lo que se reflejó en mayor rendimiento de materia seca y grano; una respuesta similar ocurrió con el riego de auxilio en ambas fechas de siembra. Los cultivos alternativos al frijol y maíz mostraron tolerancia a las heladas. El maíz para forraje es una opción para temporal normal con y sin riego de auxilio y también para temporal tardío, aunque puede sustituirse por avena o triticale. Los cultivos de ciclo largo como el maíz y el garbanzo mostraron alto riesgo para producir grano en siembras tardías; el frijol y la avena mostraron buena respuesta en siembras normales con y sin riego suplementario

Sobre la existencia de la ley de Hack en las cuencas hidrográficas de Colombia.

En este trabajo se presenta una caracterización geomorfométrica de las cuencas hidrográficas de Colombia, en términos de un estudio detallado de la relación potencial encontrada por J. T. Hack [3], entre la longitud del cauce principal y el área de la cuenca, que busca determinar una explicación del exponente que se obtiene con datos muestrales para tal relación potencial. Nuestros resultados sugieren que en 1000 cuencas Colombianas, el exponente anómalo de Kack puede explicarse en términos de la elongación de las cuencas

Avilés, entre el declive y la revitalización: ¿en la génesis de un nuevo modelo de desarrollo?

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Identification and Visualization of the Conceptual Structure and Main Research Themes of Studies in Informatics and Control Journal from 2008 to 2019

Studies in Informatics and Control journal is a quarterly publication for all those involved in the field of Information Technology (IT). Studies in Informatics and Control journal provides important perspectives on topics relevant to IT, with an emphasis on useful applications in the most important areas of IT, and it is aimed at advanced practitioners and researchers in the field of IT. The core subjects covered by Studies in Informatics and Control journal are relating to innovative research and practice in Information Technology: IT use in control and management systems; integration of IT with control; application of IT in socio-economic systems and manufacturing processes, mainly. The current research conducts a bibliometric performance and conceptual structure analysis of Studies in Informatics and Control journal from 2008 to 2019. Firstly, the journal performance is analysed according to the data retrieved from the Web of Science Core Collection, putting the focus on the productivity of the authors, citations, countries, organizations and most relevant publications. Finally, the conceptual structure of the journal is analysed with bibliometric software tool SciMAT, identifying the main thematic areas that have been the object of research, their composition, relationship and evolution during the period analysed

Analytical Evaluation of the Ratio Between Injection and Space-Charge Limited Currents in Single Carrier Organic Diodes

An analytical, complete framework to describe the current-voltage (I-V) characteristics of organic diodes without the use of previous approaches, such as injection or bulk-limited conduction is proposed. Analytical expressions to quantify the ratio between injection and space-charge-limited current from experimental I-V characteristics in organic diodes have been derived. These are used to propose a numerical model in which both bulk transport and injection mechanisms are considered simultaneously. This procedure leads to a significant reduction in computing time with respect to previous rigorous numerical models. In order to test the model, different diode structures based on two different polymers: poly(2-methoxy-5-{3',7'-dimethyloctyloxy}-p-phenylenevinylene) (MDMO-PPV) and a derivative of the poly (2,7-fluorene phenylidene) [PFP:(CN)2], have been fabricated. The present model is excellently fitted to experimental curves and yields the microscopic parameters that characterize the active layer

Nodopathies in the Early Diagnosis of Axonal Forms of Guillain-Barré Syndrome

[EN] Introduction: Guillain-Barré syndrome (GBS) has been classified into demyelinating and axonal subtypes or forms, such as acute motor axonal neuropathy (AMAN) and regional pharyngeal-cervical-brachial variant (PCBv). Objective: To study the relationship between motor nerve conduction blocks (CBs) and prognosis in AMAN and PCBv. Patients and Methods: We retrospectively analyzed six cases of AMAN and PCBv with serial nerve conduction studies (NCS) and electromyography (EMG). Results: The serial NCS (1st−2nd and 3rd week) showed, as the most constant data, a decreased amplitude of the compound muscle action potential (CMAP) in 100% of cases. CBs were present in 66.6% of cases. EMG (3rd week) showed signs of severe denervation in 33.3%. All patients were treated from the 1st−2nd week of evolution with intravenous immunoglobulins (IVIGs). Patients with CBs (1st−2nd and 3rd week), showed reversible CBs or reversible conduction failure (RCF) and complete recovery at 1 month. Patients without CBs, with persistent reduced distal CMAP amplitude (dCMAP), showed severe acute denervation due to axonal degeneration (3rd week and 1st−3rd month) and a slow recovery of several months. Conclusions: Not all axonal forms of GBS have a poor prognosis. This study of AMAN and PCBv shows that patients with CBs can have reversible CBs or RCF, and good prognosis. Patients without CBs, with persistent reduction of dCMAP amplitude decrement, have severe acute denervation, and a worse prognosis. AMAN and PCBv have a continuous spectrum ranging from CBs due to dysfunction/disruption of Nodes of Ranvier, called nodopathies, with reversible CBs or RCF and good prognosis, to axonal degeneration with worse prognosisS

Integrating curriculum-based dynamic assessment in computerized adaptive testing: Development and predictive validity of the EDPL-BAI battery on reading competence

In recent decades, there have been significant changes in the conceptualization of reading as well as in the perception of how this activity should be assessed. Interest in the analysis of reading processes has led to the emergence of new explanatory models based primarily on the contributions of cognitive psychology. In parallel, there have been notable advances in measurement procedures, especially in models based on Item Response Theory (IRT), as well as in the capacity and performance of specific software programs that allow data to be managed and analyzed. These changes have contributed significantly to the rise of testing procedures such as computerized adaptive tests (CATs), whose fundamental characteristic is that the sequence of items presented in the tests is adapted to the level of competence that the subject manifests. Likewise, the incorporation of elements of dynamic assessment (DA) as the prompts are gradually offered allows for obtaining information about the type and degree of support required to optimize the subject’s performance. In this sense, the confluence of contributions from DA and CATs offers a new possibility for approaching the assessment of learning processes. In this article, we present a longitudinal research developed in two phases, through which a computerized dynamic adaptive assessment battery of reading processes (EDPL-BAI) was configured. The research frame involved 1,831 students (46% girls) from 13 public schools in three regions of Chile. The purpose of this study was to analyze the differential contribution on reading competence of dynamic scores obtained in a subsample composed of 324 (47% girls) students from third to sixth grade after the implementation of a set of adaptive dynamic tests of morpho-syntactic processes. The results achieved in the structural equation modeling indicate a good global fit. Individual relationships show a significant contribution of calibrated score that reflects estimated knowledge level on reading competence, as well as dynamic scores based on the assigned value of graduated prompts required by the students. These results showed significant predictive values on reading competence and incremental validity in relation to predictions made by static criterion tests

Aplicación de técnicas de Ingeniería Lingüística en sistemas de e-learning basados en objetos de aprendizaje

II Simposio Pluridisciplinar sobre Diseño, Evaluación y Descripción de Contenidos Educativos Reutilizables (SPDECE), Barcelona, España., , 19/10/2005-21/10/2005, Barcelona, EspañaSe presentan tres posibles formas de aplicar técnicas derivadas del tratamiento de la información textual al ámbito de los sistemas de e-learning basados en objetos de aprendizaje (learning objects) reutilizables: la generación automática de metadatos (LOM. IMS-MD, SCORM, Dublín Core) a partir de recursos didácticos, la generación automática de cuestionarios de evaluación (IMS-QTI), y la construcción de buscadores lingüísticos de objetos didácticos en repositorios normalizados (IMS-DRI) y en repositorios semánticos basados en ontologías.Ministerio de Industri

Effect of genotyping strategies on the sustained benefit of single-step genomic BLUP over multiple generations

BACKGROUND: Single-step genomic best linear unbiased prediction (ssGBLUP) allows the inclusion of information from genotyped and ungenotyped individuals in a single analysis. This avoids the need to genotype all candidates with the potential benefit of reducing overall costs. The aim of this study was to assess the effect of genotyping strategies, the proportion of genotyped candidates and the genotyping criterion to rank candidates to be genotyped, when using ssGBLUP evaluation. A simulation study was carried out assuming selection over several discrete generations where a proportion of the candidates were genotyped and evaluation was done using ssGBLUP. The scenarios compared were: (i) three genotyping strategies defined by their protocol for choosing candidates to be genotyped (RANDOM: candidates were chosen at random; TOP: candidates with the best genotyping criterion were genotyped; and EXTREME: candidates with the best and worse criterion were genotyped); (ii) eight proportions of genotyped candidates (p); and (iii) two genotyping criteria to rank candidates to be genotyped (candidates’ own phenotype or estimated breeding values). The criteria of the comparison were the cumulated gain and reliability of the genomic estimated breeding values (GEBV). RESULTS: The genotyping strategy with the greatest cumulated gain was TOP followed by RANDOM, with EXTREME behaving as RANDOM at low p and as TOP with high p. However, the reliability of GEBV was higher with RANDOM than with TOP. This disparity between the trend of the gain and the reliability is due to the TOP scheme genotyping the candidates with the greater chances of being selected. The extra gain obtained with TOP increases when the accuracy of the selection criterion to rank candidates to be genotyped increases. CONCLUSIONS: The best strategy to maximise genetic gain when only a proportion of the candidates are to be genotyped is TOP, since it prioritises the genotyping of candidates which are more likely to be selected. However, the strategy with the greatest GEBV reliability does not achieve the largest gain, thus reliability cannot be considered as an absolute and sufficient criterion for determining the scheme which maximises genetic gain. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12711-022-00712-y