Modelling interspecies interactions of syntrophic communities

Book of Abstracts of CEB Annual Meeting 2017info:eu-repo/semantics/publishedVersio

Improved magic states distillation for quantum universality

Given stabilizer operations and the ability to repeatedly prepare a single-qubit mixed state rho, can we do universal quantum computation? As motivation for this question, "magic state" distillation procedures can reduce the general fault-tolerance problem to that of performing fault-tolerant stabilizer circuits. We improve the procedures of Bravyi and Kitaev in the Hadamard "magic" direction of the Bloch sphere to achieve a sharp threshold between those rho allowing universal quantum computation, and those for which any calculation can be efficiently classically simulated. As a corollary, the ability to repeatedly prepare any pure state which is not a stabilizer state (e.g., any single-qubit pure state which is not a Pauli eigenstate), together with stabilizer operations, gives quantum universality. It remains open whether there is also a tight separation in the so-called T direction.Comment: 6 pages, 5 figure

Uncovering the role of cross-border strategic alliances and expertise decision centralization in enhancing product-service innovation in MMNEs

Research is needed on effective servitization by multinational enterprises. This study examines whether Manufacturing Multinational Enterprises (MMNEs) can obtain better servitization outcomes by partnering with Knowledge Intensive Business Service (KIBS) firms and or by internationalizing their service function. In addition, the paper analyses the centralization of management decisions of human resources as an organizational mechanism to overcome coordination failure between product and service units. Our primary research data contain survey responses from 285 MMNEs collected in cooperation with an industry partner. Results show that cross-border strategic alliances and expertise decision centralization are critical to enhance product-service innovation

La auditoría tributaria y su incidencia en los riesgos tributarios de las empresas inmobiliarias del distrito de San Borja, 2017

Como propósito principal de la presente investigación es el de determinar la manera en que la auditoría tributaria incide en los riesgos tributarios de las empresas inmobiliarias del distrito de San Borja, durante el 2017. La relevancia de este trabajo radica en que las empresas del sector inmobiliario conviven con un sin número de riesgos de índoles tributario al tratar de cumplir de la mejor manera sus obligaciones como contribuyente. Los riesgos surgen debido a la complejidad y particularidad de regulaciones tributarias a las que están sujetas las empresas del sector inmobiliario, que a su vez suelen son volubles en el tiempo y en muchos casos son interpretados de forma errónea. Entre los principales errores que cometen estas empresas están relacionados con la determinación del crédito y débito fiscal, determinación de la prorrata, detracciones, obligaciones formales que en estos últimos tiempos se están implementando como son la facturación electrónica y libros electrónicos, entre otros; que ante la revisión del fisco podrían conllevar a la imposición de sanciones que perjudiquen la realidad económica de las empresas. Por tal razón se plantea la ejecución de auditoria tributaria como medida de imposición de dichas multas y/o sanciones corrigiendo oportunamente los posibles errores y minimizar a futuro los riesgos tributarios de las empresas inmobiliarias. La investigación es de tipo descriptivo correlacional causal, y de diseño no experimental de corte tipo transverso. La población tomada en cuenta fue de 37 entidades privadas del sector inmobiliario de San Borja, por lo que la muestra es censal al ser de un número manejable. Como técnica e instrumento para recopilar datos fue la encuesta y cuestionario respectivamente. La validación estuvo a cargo de expertos quienes a través de su juicio han evaluado la suficiencia del instrumento para lograr el objetivo trazado. Del mismo modo, está evaluación está determinado por el Alpha de Cronbach y su comprobación mediante la prueba de hipótesis Rho Spearman. Por último, se debe indicar que se ha llegado a la conclusión que la auditoría tributaria ha incidido de manera significativa sobre los riesgos tributarios de las inmobiliarias de San Borja, en el año 2017

Monitorización de datos en tiempo real usando ELK y desarrollo de una web de visualización y gestión

Treballs Finals de Grau d'Enginyeria Informàtica, Facultat de Matemàtiques, Universitat de Barcelona, Any: 2019, Director: Sergio Escalera Guerrero[en] In medium to large projects, monitoring and organizing services begins to be important, since it increases the scalability and contributes to the detection of issues and the taking of measures quickly. My work has consisted, overall, in developing a monitoring project. This implies, on the one hand, monitoring different aspects of the logs that are generated and sent in the calls to services that my company offers to the client, such as the total volume, the volume of errors, the average time, or the timeouts. We also had to create alerts based on this monitoring, whose purpose is to send a webhook to a website every time an anomaly is detected or a desired condition is met. On the other hand, I have also contributed to the development of this website, which aims to allow users to quickly view key aspects of the health of the services and notify them by SMS or email when the anomalies are generated. The monitoring part has been done using an ELK cluster (acronym for Elasticsearch, Logstash and Kibana), technologies that allow us to search and analyze our logs easily (Elasticsearch), ingest data from different sources simultaneously, transform it and send it to a warehouse (Logstash), visualize and manage the cluster from a GUI (Kibana). Once we have the data in indexs, we can create machine learning jobs, which will be fed of selected and transformed data from these indexs, and will learn to detect and generate anomalies using, among oth- ers, unsupervised learning. In addition, ELK allows the creation of watches, which are scheduled querys which verify if their result meets a condition, and if so, perform an action (in our case send a webhook).On the other hand, the website is being developed using Spring for the backend and Angular for the frontend, as well as an Oracle database. This web renovates and unifies the two websites that were used in this project before we began to use ML jobs of ELK: one web of monitoring, which created graphs of the data of ELK (obtained using its API) and associate them with a service; the other one was an administration website, which allowed grouping users, grouping services, linking groups of users with a service, creating rules that a service must meet, notify users associated to the service in case that a rule is not meeting, etc

Componentes principales funcionales de la radiación solar global de la provincia de Chimborazo, 2014-2017.

Esta investigación tiene la finalidad de identificar patrones de comportamiento de la radiación solar global (rsg) en la provincia de Chimborazo, del 2014 al 2017 a través del análisis estadístico de datos funcionales, recolectados por el Grupo de Energías Alternativas y Ambiente de la Escuela Superior Politécnica de Chimborazo en las estaciones de: Alao, Atillo, Cumanda, ESPOCH, Matus, Multitud, Quimiag, San Juan, Tixan, Tunshi y Urbina. El estudio de variables meteorológicas toma relevancia al buscar posibles fuentes de energía alternativa y renovable, por tanto, surge la necesidad de conocer las características de cada una de estas, entre las cuales está la rsg, considerando como dato funcional la intensidad de radiación recibida durante las 12 horas (luz) del día, trabajando así con 365 datos funcionales por año. Mediante correlación cruzada de la función min.basis de R se identificó como óptimo el suavizado B-spline cúbico con 15 bases y un error cuadrático medio de 4.273653e-6. Se identificó atípicos: concentrados en el 2015 para Alao y Atillo, en 2016 Tunshi y Multitud; con comportamientos extremos en Tixan 2014 y 2017, y ninguno en San Juan 2015, mismas que fueron retiradas para el análisis. Se encontró curvas medias de rsg que fluctúan desde 400 W /m2 (Multitud y Cumanda) hasta 800 W/m2 (ESPOCH). Se graficó las curvas de nivel y las imágenes superficiales raster en las cuales se observó mayor variabilidad aproximadamente desde las 10h00 hasta las 15h00. Las dos primeras componentes principales funcionales en general explican una variabilidad total mayor que el 80% para el 2014, 2015 y 2016 mientras que para el 2017 del 74%. Y el análisis clúster clasificó comportamientos de rsg similares en tres grupos: Alao, Cumanda, Atillo, San Juan, Urbina y Quimiag; ESPOCH, Tixan, Matus y Tunshi, y por último Multitud.This research aims to identify patterns of behaviour of global solar radiation (GSR) in the province of Chimborazo, from 2014 to 2017 through the statistical analysis of functional data, collected by the Alternative Energies and Environment Group of the “Escuela Superior Politécnica of Chimborazo” in the stations of: Alao, Atillo, Cumandá, ESPOCH, Matus, Multitud, Quimiag, San Juan, Tixan, Tunshi and Urbina. The study of meteorological variables becomes relevant when looking for possible sources of alternative and renewable energy, therefore, there is a need to know the characteristics of each of these, among which is the GSR, considering as functional data the intensity of radiation received during the 12 hours’ daylight thus working with 365 functional data per year. Through cross-correlation of the min.basis function of R, the smoothing cubic B-spline was identified as optimal with 15 bases and an average square error of 4.273653e-6. Atypical ones were identified: concentrated in 2015 for Alao and Atillo, in 2016 Tunshi and Multitud; with extreme behaviours in Tixan 2014 and 2017, and none in San Juan 2015, which were withdrawn for analysis. We found average GSR curves that range from 400 W / m2 (Multitud and Cumandá) to 800 W / m2 (ESPOCH). The level curves and raster surface images were plotted in which greater variability was observed from approximately 10 am to 3 pm. The first two main functional components, in general, explain a total variability greater than 80% for 2014, 2015 and 2016 while for 2017 of 74%. And the cluster analysis classified similar GSR behaviours into three groups: Alao, Cumandá, Atillo, San Juan, Urbina and Quimiag; ESPOCH, Tixan, Matus and Tunshi, and finally Multitud

A history-based framework of servitization and deservitization

Purpose: The purpose of this study is to develop a history-based framework of servitization and deservitization. Design/methodology/approach: The study draws on three history-based management theories, i.e. industry lifecycle, strategic pivoting and strategy restoration, to develop a conceptual framework of how servitization and deservitization pivots influence firm performance in different stages of the industry lifecycle. A series of examples involving configurations and reconfigurations in production illustrate the theoretical propositions. Findings: The proposed framework predicts that servitization pivots positively influence firm performance in the ferment phase, but this effect gradually diminishes as industries advance into transition and mature phases. In contrast, the framework predicts that deservitization pivots negatively influence firm performance in the ferment phase; this effect, too, becomes negligible in the transition phase but positive in the mature phase. Moreover, the proposed framework predicts that deservitization pivoting outperforms servitization pivoting in mature servitized industries to the extent that such pivots are restorative in nature, thereby suggesting that deservitization may represent a strategic opportunity for firms in mature industries. Originality/value: This study highlights the role of history-based management theories in enhancing our understanding of servitization and deservitization.authorsversionpublishe

Selling digital services abroad: How do extrinsic attributes influence foreign consumers’ purchase intentions?

© 2017 The Authors This article investigates, through the country-of-origin effect and value-in-use lenses, how the implementation of digital services creates opportunities for cultural industries to expand internationally. We argue that intrinsic attributes of cultural content such as the capacity to entertain are difficult to parameterize because they are somewhat experiential and subjective. This means that extrinsic cues are essential to foreign consumers when making a decision to purchase digital services. We specifically evaluate the influence of Britishness, cultural distance, exoticness, brand image, and flag-brand congruence on the purchase intentions of consumers in foreign markets. This study employs a unique consumer dataset with information on the internationalization of British cultural digital services. The depth and breadth of the survey data collected through collaboration with a UK media industry partner with a globally recognised brand is significantly richer than data used in previous studies. In particular, the study exploits a survey with 5,200 usable data points from consumers residing in fourteen geographically dispersed countries. Findings support theoretical predictions that Britishness, cultural distance, exoticness, brand image and flag-brand congruence are positively linked to the purchasing decisions. Theoretical and managerial implications are discussed