Producción de caña rolliza y laminados de caña guadúa (bambú) utilizada en pisos para exportación

La producción de bambú es una idea que surge de elaborar algo diferente utilizando un recurso abundante en nuestro país. El bambú es mucho más fuerte de lo que aparenta pero con una flexibilidad que le da movilidad. El bambú tiene alta velocidad de crecimiento y alcanza su desarrollo máximo en los tres primeros años, cuando para cortar cualquier otro árbol de madera se necesitan 20 años. Es por esto que escogimos esta alternativa para elaborar dos productos. La caña rolliza destinada para la construcción, y los laminados para pisos utilizando una alternativa muy similar a la madera que con los años puede sustituirla. Los mercados a los que destinamos nuestra producción fueron elegidos de acuerdo a un estudio realizado en base a el análisis de datos secundarios y entrevistas realizadas a expertos en el tema, así como a posibles compradores para descubrir sus requerimientos. Concluimos que nuestro proyecto presenta una alternativa no explotada en el país y que puede resultar rentable no solo económicamente sino también en lo social y ecológico. Además resaltamos que nuestra estrategia será promocionar un producto de calidad que esté al nivel de los estándares internacionales y que nos permita crecer en el mercado

System: A core conceptual modeling construct for capturing complexity

[EN] The digitalization of human society continues at a relentless rate. However, to develop modern information technologies, the increasing complexity of the real-world must be modeled, suggest-ing the general need to reconsider how to carry out conceptual modeling. This research proposes that the often-overlooked notion of "system"should be a separate, and core, conceptual modeling construct and argues for incorporating it and related concepts, such as emergence, into existing approaches to conceptual modeling. The work conducts a synthesis of the ontology of systems and general systems theory. These modeling foundations are then used to propose a CESM+ template for conducing systems-grounded conceptual modeling. Several new conceptual modeling notations are introduced. The systemist modeling is then applied to a case study on the development of a citizen science platform. The case demonstrates the potential contributions of the systemist approach and identifies specific implications of explicit modeling with systems for theory and practice. The paper provides recommendations for how to incorporate systems into existing projects and suggests fruitful opportunities for future conceptual modeling research.We wish to thank the editor-in-chief, Carson Woo, and three anonymous reviewers for their exceptionally insightful and developmental comments. The substantial improvements that resulted from their feedback were much deeper than we usually experience in journal review processes. We wish to thank the participants of www.nlnature.com (now inactive) who contributed their sightings from 2010 to 2022. We also thank Jeffrey Parsons and Yolanda Wiersma - the co -investigators of NLNature. We are grateful to the late Mario Bunge and to Ron Weber with whom we discussed ontological ideas that inspired this paper. We also want to thank the participants and reviewers of AIS SIGSAND and ER Conference for their comments and feedback on earlier versions of this paper. This research was supported by McIntire School of Commerce, University of Virginia, J. Mack Robinson College of Business, Georgia State University, United States, and by VRAIN Research Institute of the Universitat Politecnica de Valencia and the Generalitat Valenciana, Spain under the CoMoDiD project (CIPROM/2021/023) .Lukyanenko, R.; Storey, VC.; Pastor López, O. (2022). System: A core conceptual modeling construct for capturing complexity. Data & Knowledge Engineering. 141:1-29. https://doi.org/10.1016/j.datak.2022.10206212914

Laboratorio indoor de ensayos y medida de drones

The aim of this project is the definition of the necessary equipment installed in a closed test drone's laboratory in order to measure and characterize its aerodynamic performance, robustness and accuracy of the systems of control and guidance, the adjustment and calibration of certain types of payload, and the analysis of their behaviour in both aerodynamic and electromagnetic disturbances. Chapter one discusses the characterization and classification of UAVs and the actual legislation, that drastically limits the use of drones, which creates the need to have a closed space to perform tests, investigations, calibrations, collect data, or do simulations to predict the behaviour of the UAV. In Chapter two specifications of this infrastructure, optimal location and the possible uses are detailed. Chapters three, four and five deal with different tests to perform in the laboratory: classified in aerodynamics, control and guidance, and payload tests respectively. Due to its technological equipment, in the laboratory we can measure and characterize parameters such as stability and accuracy of the trajectory of the drone, position, altitude, velocity, and aerodynamic angles: and perform tests with different types of payloads. All these parameters can be measured in an atmosphere at rest or with disturbances generated in the laboratory, both aerodynamic and electromagnetic and analysing the behaviour of the aircraft being able to improve performance

Effect of contacts on electrical properties of nanostructured porous silicon

En este trabajo se presentan resultados preliminares sobre el estudio del efecto de los contactos metálicos de aluminio sobre las propiedades de transporte eléctrico del silicio poroso nanoestructurado sobre sustratos de vidrio. Se realizaron medidas de TSDC entre 270 y 365 K y de dependencia temporal de la corriente con voltajes de polarización entre 0.1 y 1.5 V. Se analiza el incremento de la corriente cuando se aplica el voltaje y la relajación en condiciones de corto circuito en función del tiempo. A partir de las curvas de corriente vs. tiempo (It) medidas, se obtienen curvas corriente vs. voltaje (IV). Las curvas I-V sugieren un comportamiento tipo Schottky y permiten desestimar un mecanismo Poole-Frenkel. Para V t1(V) la corriente disminuye siguiendo una ley de potencia de la que finalmente se aparta para saturar. Para V > 0.4V el efecto de disminución de la corriente desaparece. Al llevar el voltaje a cero, la corriente muestra un decaimiento abrupto, con cambio de signo para después subir al valor base. Los experimentos de TSDC mostraron una inversion de la corriente.We present preliminary results on the effect of contacts on electrical properties of nanostructured porous silicon supported on glass. TSDC measurements were performed in the 270 - 365 K temperature range. The time dependence of the current for applied bias within the 0.1-1.5V range was also studied. The current increase after the voltage is applied and its relaxation in short circuit conditions are analized. The current-voltage curves (IV) suggest a Schottky behavior, the Poole-Frenkel mechanism being ruled out. When V t1(V) the current decreases following a power law before saturating. For V > 0.4 V the decrease of current is not further observed. When the applied voltage is removed (short-circuit condition), the current decreases abruptly, changes sign and then increases again towards its stationary value. TSDC experiments show a current sign inversion.Fil: Marín Ramírez, Oscar Alonso. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico Para la Industria Química; ArgentinaFil: Comedi, David Mario. Universidad Nacional de Tucumán. Facultad de Ciencias Exactas y Tecnologia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Koropecki, Roberto Roman. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico Para la Industria Química; Argentin

Decent work and healthy employment: a qualitative case study about Colombian millennials

The purpose of this paper is to show how a group of Colombian millennials perceive different aspects of working life and how their ideas about job satisfaction, professional expectations, and levels of autonomy are related to contemporary demands about inclusion, diversity, equity, autonomy, and control. With this objective, 167 semi-structured interviews were conducted with millennials who work at 10 Colombian companies from the manufacturing and service sectors, located in the 5 main cities of the country. With a qualitative approach in the interviews, the research team used a strategy inspired by the technique of generating visual structures associated with grounded theory. It is concluded that new generations of Colombian workers know of the importance of rewards and autonomy in work and are more critical and less passive in the face of unhealthy working conditions. At the same time, their conduct and speeches are the consequence of the characteristics of the Colombian labour market. The document responds to the need to deepen the debates on welfare and happiness in organizations and to include the demands of millennials in the reflective and political horizon of the ideas of healthy employment and decent work. In practice, this article seeks to demystify ideas about millennials in Colombia and critically contribute to reflection on intergenerational relations in organizations and salary and welfare models. As a Latin American case, it is an original contribution that avoids the common places and the frivolity with which the insertion of the new generations into the working world has been analysed

Financial management practices and firm performance among micro and small enterprises in Busia town,Kenya

Micro and Small Enterprises refer to those enterprises that employ less than 50 employees. Micro enterprises employ 0-9 employees, while small enterprises employ 10 – 49 employees and they account for 75 per cent of the total employment and 30 per cent of the Kenya’s gross domestic product. However, two thirds of micro and small enterprises fail within the first few months of operation. Majority of micro and small enterprises are characterized by low growth rate and transition to medium and large enterprises. Access to expansion capital has been adversely cited as a major cause of the low levels of growth. This study seeks to assess how financial management practices affects performance of micro and small enterprises in Busia Town, Kenya. Specific objectives of the study was: to establish the effects of working capital management, Cash Flow Management, asset management and financial reporting on performance of micro and small enterprises. Descriptive research design was adopted to guide the research. The target population for the study was 712 small scale traders in Busia Town from which a sample of 88 respondents was selected using the simple random sampling technique. Data was collected using a questionnaire designed and administered to the business owner managers by the researcher. The data collected was coded and cleaned before analysis. Analysis of data on the other hand was done using both descriptive and inferential statistics. Descriptive statistics such as mean mode, frequency counts and percentages was used to summarize responses. Relationship between variables as well as statistical inferences was done using a multiple regression analysis. Regression model was used in determining relationship between variables. The study is expected to shed light on how micro and small traders in Busia Town manage their finances and whether and how this enhance or hinder business performance. Keywords: Firm Performance, Financial Management Practices, MSEs

Millennials and the gender wage gap: Do millennial women face a glass ceiling?

This study aims to measure the gender wage gap among millennial workers in Colombia and determine if there is a marked wage difference between millennial women and men. Further, this study analyzes whether millennial women face a glass ceiling, that is, if there is a larger gender wage gap among workers earning relatively high wages. The study data included a sample of 2,144 millennial workers employed in 11 organizations located in the five main cities of Colombia. Oaxaca–Blinder econometric methods of wage decomposition were used to calculate both raw and adjusted gender wage gaps. The latter results in estimating the gender wage gap while controlling for observable characteristics related to individual, family, and labor. The results show that millennial workers in Colombia face gender inequality in the labor market and that professional millennial women experience a distinct glass ceiling. The adjusted gender wage gap is 9.5 percent, and this gap increases with education level, increasing to nearly 14 percent among college-educated workers. This paper contributes to the literature on workplace discrimination and gender wage inequality for younger workers, and it is original in reviewing the gender pay gap in Colombia using a primary dataset. Most of the work in this area has been done mainly in the developed countries and this research add to the findings which had focused on those nations

Imaging Coral I: Imaging Coral Habitats with the SeaBED AUV

The SeaBED autonomous underwater vehicle (AUV) is a new imaging platform designed for high resolution optical and acoustic sensing. This low cost vehicle has been specifically designed for use in waters up to 2000 m to carry out video transects, bathymetric and side-scan sonar surveys. In this paper we detail the systems issues associated with navigation, control, and imaging that led us to our particular hardware and software design choices so as to allow us to operate in shallow, shelf and ocean basin environments. We illustrate the strengths of our design with data obtained during two research cruises associated with mapping coral reefs off Puerto Rico and Bermuda. In both these cases, SeaBED was deployed in extremely challenging terrain associated off the shelf edge and was successful in returning high quality color imagery of deep coral habitats.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/86034/1/hsingh-34.pd