bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessing the impact of outside view on learning: a close look to EN 17037 ‘view out’ practices through the analysis of 220 classrooms
Authors: Kuhlenengel Michael , Waters Clarence E. , Konstantzos Iason 
Published: November 2019

Abstract
The purpose of design standards and guidelines is to ensure occupant safety and aid in occupant well-being and satisfaction. Educational buildings such as schools should extend this aim, by also promoting student learning, something that has triggered literature in the past suggesting significant correlation between learning performance and the indoor environment. EN 17037 “Daylight for Buildings” is a recently approved European standard that seeks to assess and ensure successful daylit spaces, including sections on protection against glare, exposure to sunlight, and view out. EN 17037 includes three ways of assessing view out in buildings including, Horizontal sight angle, Outside distance of the view, and Number of view layers outside of windows, a combination that potentially makes it an efficient way to describe such a complex concept. This paper will use a large data set of 220 K-12 classrooms in the Midwest region of the United States in order to evaluate whether any of these three levels of assessing view, or combinations of them can show potential effects on student achievement. The Number of view layers showed a significant positive effect on reading achievement. However, none of the metrics were found to be significant with respect to math achievement. These results aim to identify the next steps of a future controlled study towards a better quantifiable understanding of outside view perception, while also triggering a conversation about the main factors connected to outside view that should be considered towards an indoor environment that promotes learning and productivity.
A method for the retrofitting of pre-1914 Walloon dwellings with heritage value
Authors: Stiernon Dorothée , Trachte Sophie , Dubois Samuel , Desarnaud Julie 
Published: November 2019

Abstract
The sustainable energy renovation of historical buildings and listed heritage is a challenge for Belgium and other European countries. These are crucial for urban and rural development and for the future of old buildings. This is the context of the ‘P-RENEWAL’ research project. It aims to develop a methodological tool for retrofitting historical Walloon dwellings built before 1914, to enhance their heritage values while implementing relevant energy measures. The originality of this research is to consider energy, environmental and heritage aspects in a complementary way, in order to help designers achieving a goal of greater sustainability. According to the listed heritage administration, dwelling types built before 1914 represent approximately 25 % of the Walloon stock. This project is related to the research work carried out under the Task 59 of SHC ‘Renovating Historic Buildings Towards Zero Energy’. The methodology used to achieve the research objectives is articulated in various steps. First, a typological analysis of buildings from the interest era is completed. Then, based on on-site studies performed on representative case studies, the evaluations of heritage values and performance are conducted. Finally, dynamic energy models are run to support the proposition and validation of retrofitting strategies.
Renovation strategies of typical Danish single-family house for optimization of energy efficiency and flexibility
Authors: Marszal-Pomianowska Anna , Johra Hicham , Loukou Evangelia , Liu Mingzhe , Pomianowski Michal , Sharif Nadin Hisham , Monne Laia-Tuixent Morgo , Polonowa Una 
Published: November 2019

Abstract
Buildings will play a significant role in providing a safe and efficient operation of the future energy system. The aim of this work is to investigate how typical cost-effective renovation packages contribute to energy consumption reduction as well as influence the energy flexibility in a Danish single-family from 1970s, and if simple rule-based controller can contribute in peak shaving strategy. By choosing the different renovation packages, the space heating demand can decrease between 34 - 64% and the flexibility time can increase between 200 – 500%. Depending on the cut-off period, the simple RBC of turning off the heating power can further reduce the heating consumption and contribute in reducing the morning load peak with small compromise on the thermal comfort level.
Predicting the thermal performance of thermochromic flat plate solar collectors
Authors: Krammer Anna , Schüler Andreas 
Published: November 2019

Abstract
A thermochromic vanadium dioxide (VO2) based absorber coating is proposed. The optical response of the multilayered absorber is first simulated, then, the spectral reflectance of the deposited absorber is measured. The determined solar absorptance and thermal emittance values are used to predict the thermal performance of the thermochromic flat plate solar collector. The corresponding stagnation temperature is estimated to be ∼25°C lower than that of a standard collector. This is mostly due to the increase in emissivity over the thermochromic phase transition and, partially, to a lower solar absorptance than in standard absorbers. However, a concurrent increase of the solar absorptance over the phase transition limits the overheating protection abilities of the thermochromic collector. Alternative scenarios based on thermochromic absorbers with assumed, constant solar absorptances and the same temperature dependent thermal emittance as determined for the measured sample, are considered. The corresponding thermal performances and stagnation temperatures are predicted and discussed.
The information and communication technologies in the administration of the processes and systematization
Authors: Rodríguez J P , Moreno L Y 
Published: November 2019

Abstract
The objective of the research is to describe how Information and Communication Technologies allow not only to organize in the strain bank microorganisms obtained from different environments for application in academic, research and extension processes, but also to continue characterizing microorganisms obtained from different environments for application in all these processes. Results it has been observed that the absence of Information and Communication Technologies as a strategy to organize and select viable microorganisms already identified can continue to be used and applied in industrial processes, environmental, agricultural food and pharmaceutical industry, among others, has caused the dispersion and loss of information, hindering the easy and timely recovery of the products generated, not being recorded and stored information that is generated. The “Laboratorio de Investigaciones en Microbiología Avanzada y Biología Aplicada” must create its own website and web application that allows strengthening the strain bank, allowing them to be visible with the production generated there.
Design of a mechanical seeder
Authors: Ospina-Bayona H E , Sánchez-Torres C C , García-León R A , Ballesteros-Ruiz H A , Pérez-Lozano B C 
Published: November 2019

Abstract
In the agricultural production processes that are carried out in most of the Colombian regions, some deficiencies can be observed in the way in which the seeds are sown. This is a task that is carried out manually, generating physical problems in the workers due to the enormous effort that they must make, in addition to the precariousness in how these works are carried out. The long periods that are involved in sowing greatly hinder its efficiency, something that directly affects the economy of the farmers. The purpose of this work is to design a mechanical seeder that facilitates the work of the operators by eliminating the manual operation of it and equipping them with equipment that performs the furrows in the ground and at the same time sows the seed. The results obtained corroborate that there is an adequate structural design, which will support the forces to which the machine will be subjected. In this way, it will be possible to contribute to the improvement of the sowing conditions of the farmers of the region. This design takes into account the number of seeds sown per hectare, which is about 20 kg. These data were obtained from farmers belonging to the Universidad Francisco de Paula Santander seccional Ocaña. Additionally, maximum deformation analysis was performed on the chassis, obtaining values of 1.791×10−4 m, as well as structural analysis using the Solidworks drawing tool.
Alkaline pre-treatment and hydrolysis with acid cellulase of the rice husk (Oryza sativa) for production of bioethanol
Authors: Cacua A , Gelvez J J , Rodríguez D C , Parra J W 
Published: November 2019

Abstract
Several companies generate large amounts of agroindustrial waste, which could be used as raw material for the production of bioethanol; among them, those that process and commercialize rice, which produce a large amount of husk, a lignocellulosic material, as a by-product. These companies generally use rice husk as fuel for the ovens, generating problems to the environment due to the emission of polluting smoke. The objective of this work was to obtain bioethanol from rice husk, taking advantage of its cellulose and hemicellulose content. The lignin was removed by an alkaline pretreatment with 2.00% w/v sodium hidroxide solution. Cellulose and hemicellulose in the husk were hydrolysed by enzymatic hydrolysis with acid cellulase for 72 hours. During this period of time, the concentration of total reducing sugars was monitored by the 3,5-dinitrosalicylic acid method, in order to determine the reaction time in which the highest concentration of total reducing sugars is obtained. The sugars obtained were fermented with saccharomyces cerevisiae, for the production of alcohol. During the enzymatic hydrolysis of the pre-treated rice husk, it was found that the highest concentration of total reducing sugars in the samples was 7.778 g/L, obtained in a time of 24 hours of hydrolysis. The sugars obtained were fermented with Saccharomyces cerevisiae, for alcohol production. A distillate was obtained with a concentration of 3.7% v/v.
A review about the use of industrial by-products in the lightweight aggregates production of expanded clay
Authors: Cáceres J R , Rojas J P , Sánchez J 
Published: November 2019

Abstract
The fabrication lightweight aggregates in recent years has included the addition of industrial by-products in the expanded clay manufacture as modifier agents of the expansion capacity, and also as a destination for the disposal of waste and residues in countries where lightweight concrete is used for the construction of high-rise structures. This article provides a review of the use of by-products as additives in the production of lightweight aggregates from expanded clay available in the literature. As a methodology, the bibliographic search was used through the consultation of specialized databases such as Sciencedirect and other documentary sources of open access scientific journals in several countries. The selection criteria for documents were specified according to the frequency the by-product use. 58 references on investigations by-products addition to the lightweight aggregates production were revised. In conclusion, the study of the use of Colombian byproducts as additives in the expanded clay aggregates production is suggested as a research subject due to the absence of articles related to this topic.
Effect of force angle on the strain distribution of osseointegrated dental implants
Authors: Forero L , Castilla R , González-Estrada O A 
Published: November 2019

Abstract
In this work, we investigate the response of the anisotropic maxilla bone in the peri-implant region, when osseointegrated implants are subjected to external forces at different angles, based on the stress and strain distribution by the finite element method. Models were created to represent a portion of a maxilla bone (upper first molar region) with two types of implants which have different thread geometry (squared and V-shaped) and material (Ti-6AL-4V ELI and grade IV Titanium). Compressive axial (150 N) and oblique load (150 N at 45° angle) were applied to anisotropic models of the bone tissues. Complete osseointegration was assumed. Results demonstrated that the increase of the implant inclination leads to a more critical behaviour. Oblique loading is more detrimental to stress and strain distribution than axial load. Stress fields were more efficiently distributed by squared thread implants.
Sinplafut: A microservices – based application for soccer training
Authors: Vera-Rivera F H , Vera-Rivera J L , Gaona-Cuevas C M 
Published: November 2019

Abstract
Microservices are an architectural style of service-oriented applications that allow the application to be divided into independent and autonomous units, which can be individually developed, tested, deployed (mainly in the cloud), scaled and monitored. The application then becomes a composition and integration of small distributed systems. In this paper, a case study is presented, where the Information system for the planning of soccer training, is developed, following the architectural style of microservices. It presents the architecture defined for the information system and its implementation using DevOps practices, among them, continuous delivery, continuous deployment and automated tests. The level of granularity of each microservice is evaluated using domain-driven design and the definition of delimited contexts. Defining the optimal size of microservices is fundamental, directly affecting performance, maintainability, storage, transactions, distributed queries, use and consumption of network and computational resources. On the other hand, the development of the information system allows improving the planning of soccer training using modern sports training techniques. System for the planning of soccer training can be used by soccer teams, clubs, physical trainers, coaches and technical directors both amateur and professional, as a software as a service application.
Integration of big data in small and medium organizations: Business intelligence and cloud computing
Authors: Camargo-Perez J A , Puentes-Velasquez A M , Sanchez-Perilla A L 
Published: November 2019

Abstract
Although it is well known, organizations are becoming increasingly concerned about how they make use of information and thus obtain the greatest benefit from it for competitive purposes and continuous improvement in a globalized world of constant change, large volumes of data produced by organizations turn out to be a key element in decision-making for productive purposes, the multinationals already do it, why not integrate it into small and medium-sized companies? Today small and medium enterprises are still making decisions based on intuition, which do not take into account the information, intuition in most cases does not work as a good guide for decision making, in small and medium enterprises bosses or owners of these manage their companies more by the experience acquired through the years that often do not take into account the technological advances that are being developed to improve their processes.
Diagnosis of horizontal pipe leaks using neural networks
Authors: Gómez-Camperos J A , Espinel-Blanco E E , Regino-Ubarnes F J 
Published: November 2019

Abstract
This document presents an experimental study that supports probabilistic decisions based on neural networks to detect the presence of leaks in pipeline transport systems, since such leaks can cause serious consequences. In addition to the economic losses presented by the lost product, process stoppage and repair of the damage, there can be insurmountable environmental and social losses such as the death of human beings. The probabilistic model correlates measurements of inlet and outlet pressures and flow to the state of leakage. The study and experimentation presented in this work are based on information acquired by simulating the behavior of the fluid in a pilot tube installed in the Fluid Mechanics laboratory of the Universidad Francisco de Paula Santander, Seccional Ocaña. Finally, experimental tests were carried out to obtain the data of the physical variables of the flow sensors at the entrance and exit, with these data a multilayer neural network of perception was trained. The results obtained from the test equipment, with intentionally caused leaks, showed that the structure of the multilayer Perceptron neural network was capable of detecting leaks in the pilot tubes. With the accomplishment of this work it was found that the neural network presents favorable results at the time of detecting the leak compared with other methods of detection since this one presents immunity to the noise, a parallel structure and, consequently, capacities of fast processing and classification.
Bioconversion of post-culture wastewater from farm fisheries for the production of high-value algal biomass
Authors: Gámez-Ortiz L P , Gónzález-Soto M J , Perez-Roa M E , García-Martinez J B , Urbina-Suarez N A , Diaz-Castañeda C E 
Published: November 2019

Abstract
Post-consumption water from inland fisheries possesses a tremendous environmental impact on aquatic ecosystems due to their high load of nutrients such as Nitrates, Phosphates, Urea and organic load. Due to the high cost of current water treatment systems, most of the waters from inland fisheries are discharged without any treatment, thus generating a significant environmental impact in rivers of different localities. Cyanobacteria are a group of photosynthetic microorganisms that can grow in different environments including wastewater. Among the most industrially exploited cyanobacteria, Spirulina (Arthrospira) maxima is the most relevant microorganism, due to its capacity to produce large quantities of protein and colourants (especially phycocyanins) for the food and feed industry. The objective of this project is to determine the maximum production capacity of Spirulina in post-consumption waters of fish farming as a system for the treatment of this type of water through the biological capture of the various nutrients and the production of biomass of industrial interest. S. maxima was produced on 3 different media (wastewater + Zarouk, wastewater + K2HPO4, NaNO3, NaHCO3 and wastewater without any modification) for 30 days. Results shown that S. maxima can effectively grow on wastewater supplemented with NaNO3 (2.5 g/L), NaHCO3 (16.8 g/L) and K2HPO4 (0.5 g/L) to obtain up to 1.18 g/L of total biomass and 0.23 g/L of phycocianins. The scaling of culture at 10 L showed a minimal reduction on final biomass and phycocyanin (1.05 and 0.21 g/L respectively), this result indicates that the production of biomass and phycobiliproteins from S. maxima in wastewater from inland fisheries can be a possible candidate for the simplification of biomass and high-value metabolites process production.
Hydrological similarity of catchments in the southern area of Colombian Andean region
Authors: Carrillo-Soto G A , Cely N J , Ayala-Ibarra M L 
Published: November 2019

Abstract
In every branch of science, the classification of the object of study shows the degree of understanding reached. Hydrology seeks this sorting system that classifies watersheds globally, a highly complex issue given the degree of heterogeneity of climates, geomorphology, vegetation cover, soils and geology. This project provides ideas on the possibilities of classification of basins in the southern region of the Andean zone in Colombia, from hydrological similarity point of view, evaluated by means of "signatures" that synthesize the hydrological functioning of the basin. Five signatures were considered: Runoff coefficient, base flow index, slope of the flow duration curve, discharge-precipitation elasticity, and hydrograph rising limb density. Geomorphological characteristics and values of hydrological signatures were determined for 25 catchments. Two classification methodologies were implemented: k-means clustering and classification and regression trees. The grouping identified two groups for base flow index, rising limb density and slope of the flow duration curve firms, and three groups for the remaining runoff coefficient and streamflow-precipitation elasticity. No significant correlations were found between hydrological signatures and climatic and geomorphological characteristics, suggesting a degree of complexity within hydrological processes that require the inclusion of other components such as vegetation and soils characteristics. By applying regression trees, the basins were grouped into 4 classes, with the slope of the flow duration curve being the main discriminator and the rising limb density in the second level. The importance of the flow duration curve as an indicator of hydrological processes and the rising limb density as an indicator of the climatic component, the driving force of said processes, is highlighted.
Conceptions of distance education and financial mathematics from an onto-historical understanding
Authors: Paz Montes L S , Parra López H M , Vergel Ortega M 
Published: November 2019

Abstract
Mathematics as a system of knowledge organized in distance education, in continuous expansion is applied in almost all disciplines of knowledge, is aimed at stimulating the development of cognitive skills, as well as analytical and critical skills, whose importance lies in the theory of value, seeks to discover manifestations to the development of the capacity for self-determination, collective autonomy and solidarity. The research was developed under the mixed paradigm, supported by a historical-dialectical and quantitative approach of confirmatory factor analysis, having as key informant’s managers, tutors, graduates and students of different programs of distance education. His ontology from the nature of the reality, was to generate a theoretical and didactic approach from the onto - historical understanding of financial mathematics in the trajectory of programs in distance education. The results obtained show that there is a significant relationship between the modality, the critical dialogical approach in the teaching of financial mathematics and technology. It is concluded that the conception of distance education is determined as an opportunity to be professional, for low-income youth who live in vulnerable areas, and have labour commitments. The structural model identifies factors, motivation, human relationships and resources, associated with the conception and development of cognitive skills in financial mathematics
Development dynamics of the industry in Khakassia, technological solutions for a coal cluster
Authors: Bulakina E N , Nedzelsky O N , Bikineeva A N , Moiseyev V V 
Published: November 2019

Abstract
Today the coal industry of Khakassia takes the third place according to the index of industrial production, regarding extraction of coal, among regions of Siberia and the 14th place in Russia. Its further development is connected with creation of a coal cluster on the basis of enterprises producing and processing coal. There are all necessary modern capacities in the Republic. There are two coal processing plants, crushing and sorting complexes and also favorable conditions for developing transport networks connected to the perspective centers of coal mining in the country, capable to increase volumes of producing and processing coal, to increase quality of products. It is noted that the foundation of coal mining in Russia was laid at the end of the 17th century. The first deposits began to be mined near modern Donbass (area of the Kalmius river and the river Seversky Donets). The coal industry is one of major export developing industries of local economy.