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A model of a paper napkins winder based on Newton's second law is described. A method for controlling angular velocity with a splitter controller developed in a PLC to enhance the action of the controller present on a Siemens SINAMICS drive line is proposed. The tension is measured by a sensor and converted to current signal to be sent to the PLC Splitter in order to soften it before entering Sinamics PID controller to keep the process within the desired range of control. A simulation of the industrial application is performed by Matlab's Simulink® and validates the real controller design. Finally, obtained and verified control is implemented on a paper napkins processing machine, where the results show the effectiveness of the proposed controller. [ABSTRACT FROM AUTHOR]

This paper evaluates the influence of Soil-Structure Interaction (SSI) on the linear structural response of regular wall-frame systems representative of Bucaramanga-Colombia using the substructure approach proposed by Winkler. Information was collected from existing local systems study using official databases. Using the 22 factorial design of experiments, nine artificial buildings were created with different soil types and number of floors. These buildings were designed and detailed under the fixed base idealization, following the local seismic-resistant regulations. Analyses were carried out including and excluding the ISE. The results revealed that the ISE had a significant influence on the linear response of structures located a high seismic hazard zone, presenting variation in the fundamental period, change in the modal response, increase in drifts and decrease in the base shear. In addition, it was found that it also affects the analysis method for the design. [ABSTRACT FROM AUTHOR]

In this paper were studied the physicochemical characteristics of organic waste generated in the municipality of Suchiapa, Chiapas, México. The objective was to characterize fruit and vegetable residues: pumpkin peel, tamarind peel, corn cob leaves and livestock fecal residues: cattle, sheep and poultry manure, to determine their optimal use in biogas and methane production. The parameters analyzed were humidity, ashes, pH, total solids (ST), total volatile solids (STV), carbon (C) and nitrogen (N), applying the methods of the Official Mexican Standards (NMXAA-016 to the NMX -AA-025). The results obtained from the calculation of STV, estimated a theoretical production of 850 L of methane/kg of STV through the use of pumpkin peel, being the best residue to guarantee biogas production. In this way, with the physicochemical characterization of the waste, it is possible to revalue their potential for the production of biogas. [ABSTRACT FROM AUTHOR]

Educational mobile applications have gained strength in the teaching and learning processes, for this reason, the objective of this paper is to demonstrate how these mobile applications can be considered a great tool in teaching using steam methodology. The paper has a descriptive character, considering the way in which the different forms of learning are supported by mobile devices and are becoming new teaching models. The topics addressed, the services received, the content exposed, among others, are analyzed. The results show a positive impact after the use of the applications on the performance, motivation, attitude and interest in learning of the students in the topics developed, as well as the satisfaction of the teachers for the support of the mobile applications in their work, and how the applications allow reinforcing the knowledge acquired without the presence of the teacher. [ABSTRACT FROM AUTHOR]

In this paper three prime numbers are presented as high potentials to be Mersenne numbers and their application in computational primality testing is suggested. These numbers are constructed from a regression algorithm based on Support vector machines (SVM) and using a Gaussian Kernel. Data training is carried out using the Phyton programming language, In the study we address the current data of Mersenne primes and work with the Ova-angular classification group for Mersenne primes 31. [ABSTRACT FROM AUTHOR]

The state estimation in power electronic converters is an interesting alternative to obtain indirectly some variables that are difficult to measure, due to sensor costs or limitations imposed by measurement noise. Therefore, in this paper we design three linear and three nonlinear state estimators for a DC/DC boost converter model, in order to verify the convenience of using only nonlinear estimators as a solution to the converter current estimation problem. Additionally, the behavior of these estimators is tested by simulation in Matlab software. [ABSTRACT FROM AUTHOR]

The response to the growth of global tourism demand to explore alternative destinations requires that countries consolidate taking advantage of their natural and cultural resources with a sustainable approach in the assumption that, the diversification of destinations will have positive indicators in fighting poverty and social inequality. The aim of this paper is to evaluate public tourism policies and the agglomeration theory in ecotourism and cultural tourism services in Mexico using indicators of sustainable development, wages, employment and specialization coefficient for the 2004, 2009 and 2014 census years. The paper analyzes 32 entities from Mexico, emphasizing in two regional programs and the NMX-AA-133-SCFI-2013 standard. [ABSTRACT FROM AUTHOR]

Neuromarketing uses neuroscience to reveal subconscious consumer decisionmaking processes. Like neurology, neuromarketing studies brain and biometric responses, as well as behavior, to understand how consumers feel, think, and act. This work aimed to use various bibliographical sources to better understand the concept of neuromarketing and assess its implementation advantages. The paper shows that neuromarketing is advantageous because it does not rely on consumers to report emotions. It can accurately tie physiological reactions to a specific part of an ad or message. However, it is crucial to keep in mind that there are limitations, such as the high cost of applying neuromarketing. Also, since brain science is still evolving, there is yet to be a reliable way to connect marketing stimuli to the emotions triggered. [ABSTRACT FROM AUTHOR]

This review paper aims to analyze the academic perspectives with which the concept of sustainability has been approached in the fields of administration and organizational studies. Methodologically, it consists of a review of 130 documents published in 22 scientific journals recognized by Publindex-Minciencias in the organizational field and related disciplines in Colombia, focusing on the period 2010-2020. As a result, 28 thematic categories and qualitative analyses of the conceptual perspectives that underlie them are presented. It was identified that these concepts are used indiscriminately in the literature and that three thematic approaches coexist: 1) sustainability as a strategy for economic durability, 2) sustainability as a conscious economic developmental perspective and 3) sustainability as a sociocultural and political project of universal transformation. [ABSTRACT FROM AUTHOR]

Interest to include waste glass in concrete can be ascribed to the growing need for waste disposal, as well as to minimize traditional raw material usage in concrete preparation. Glass waste has a direct effect on the properties in a fresh and hardened state; however, there are few reports that account for its effect on CO2 emissions. In this paper, a review of different reports that incorporate glass waste in replacement of aggregates or cement is presented and the estimation of CO2 emissions was made. The results show that the replacement of cement by glass waste generates a positive effect on strength and decreases carbon dioxide emissions, being greater the greater the cement replacement, a 20% reduction in CO2 emissions was found for a 20% replacement. [ABSTRACT FROM AUTHOR]

Performance tests are crucial to measure the quality of software developments, since they allow identifying aspects to be improved in order to achieve customer satisfaction. The objective of this research was to identify the optimal Machine Learning technique to predict whether or not a software development meets the customer's acceptance criteria. A dataset with information obtained from web services performance tests and the F1-score quality metric were used. This paper concludes that, although the Random Forest technique obtained the best score, it is not correct to state that it is the best Machine Learning technique; the quantity and quality of the data used in the training play a very important role, as well as an adequate processing of the information. [ABSTRACT FROM AUTHOR]

This paper proposes an analysis of political communication in the relations between candidates, citizens, and the Public Administration, to determine the factors that foresee management changes and to establish a frame of reference in the examination of public communications through three dimensions: depth, incidence, and limits, which are studied in a given time and their interaction is called the Alpízar-Mora Effect. This effect arises from the analysis of the technical gaps in the political discourse --identified during the electoral process in Costa Rica for the presidential period 2018-2022 through qualitative research-- and it contributes to the discussion and evaluation of political communication. As a result, the authors propose factors, variables, and questions to analyze in three dimensions the coherence between the political discourse and the strategic planning of the Government. [ABSTRACT FROM AUTHOR]

The purp of this paper was to analyze the contributions of the Small Farm Verticalization Program of Cacoal - PROVEC to family farmers regarding access to rural credit, production, and commercialization. The results showed the absence of a specific credit line; the list of products remained unchanged, with an increase only in the produced volume. The commercialization was expanded; the effective financial gains were visualized by a few producers, in several cases, sufficient only to cover debts incurred for the restructuring and regulation of the UFPA, the taxes, and the product improvements. The gains were not those aspired to by the families, resulting in multi-activity among farming families. [ABSTRACT FROM AUTHOR]

The article raises the need to establish relationships between the discipline of history and the theory of administration in order to think about the development of the latter within the framework of a history of ideas that makes it possible to locate the theory of administration based on its conditions of possibility in every historical moment. Therefore, this work does not intend to treat an internal evolution of ideas about the discipline. Still, the objective is to identify how, from the historical context and the use of the words in each context, it is possible to identify the different meanings of the word administration until its current equivalence with management. In short, this paper seeks to generate a work methodology for the history of administration. [ABSTRACT FROM AUTHOR]

In this research paper, we examine forms of work organization implemented in Mercado Libre based on interviews with its workers in Argentina. We analyze the historical course of human resources management until the incursion of the pandemic. As part of the findings, we can point out that the evolution of work management and well-being shows ruptures and continuities, where emotions become increasingly relevant in human resources policies. Inspired by positive psychology in the 90s, such policies focused on the resilient individual. This figure has become more relevant since COVID-19, when the management of intimacy and emotions is mediated by the use of technologies supported by big data. [ABSTRACT FROM AUTHOR]

It is known that the classification of the Lie algebras is a classical problem. Due to Levi's Theorem the question can be reduced to the classification of semi-simple and solvable Lie algebras. This paper is devoted to classify the Lie algebra generated by the Lie symmetry group of the Chazy equation. We also present explicitly the one parameter subgroup related to the infinitesimal generators of the Chazy symmetry group. Moreover the classification of the Lie algebra associated to the optimal system is investigated. [ABSTRACT FROM AUTHOR]

For companies, the organizational culture is a determining factor of success. However, this element becomes more important for rural companies because it is directly related to the origin of their productive activities. The purpose of this document is to argue theoretically and empirically about the importance of organizational culture in rural enterprises through the review of several studies, which propose variables for the analysis of an organizational culture in this type of company. There are external, internal, and main factors of the organizational culture involved in the analysis, being the latter ones the most important as they are part of the intangible inheritance and allow the understanding of the organization. Finally, the paper concludes that the organizational culture influences the management of the rural enterprise. [ABSTRACT FROM AUTHOR]

This work is part of the decolonial turn and critical Latin American studies of management. It points to the distancing of the epistemic coloniality of organization theory and studies and the rational monoculture imposed by organizational modernity/postmodernity. It delves into the critique of two issues: how the ordered and simplified knowledge of the world has been established as the scientific one (Ibarra-Colado, 2006), and the epistemic privilege of the scientist who is situated in an imaginary zero point (Castro-Gómez, 2010) and makes the knowledge derived from the historical experience of 4 or 5 countries universal (Santos, 2010). The paper proposes a decolonial perspective and collaborative action research practices to understand the organizational forms that are not limited by the rational monoculture. [ABSTRACT FROM AUTHOR]

The remotion of CO2 from CO2/CH4 mixes to increasing energy content in natural gas or biogas and to prevent corrosion problems, has driven the development of CO2 separation process through membranes. The attractive features offered by this technology include high energy efficiency, reduced cost and highly flexible performance. This review provides an overview of the reported paper from 2010 to 2020 different types of membranes available: polymeric, inorganic and mixed matrix for CO2/CH4 separation process, experimental conditions and primary determinants of separation performance and efficiency (permeability of CO2 and CO2/CH4 selectivity). This work would open up a new perspective of each membrane to facilitate a better appreciation of their role in the improvement of overall process performance. [ABSTRACT FROM AUTHOR]

Artificial intelligence offers great opportunities for the supply chain, making it a competitive advantage for today's changing market. This paper aims to identify the impacts and opportunities that artificial intelligence software can offer to supply chain in the Colombian banana sector to facilitate the operation and improve the performance. The searching method consists of six steps getting 72 investigations finally. The sources of information were four databases. The main conclusion is the supply chain of the banana sector has everything for implementation of solutions based on intelligent software in order to achieve adaptation, flexibility and context awarenes and execution domain. [ABSTRACT FROM AUTHOR]

This paper presents an architecture for the measurement and integration of bioparameters based on inertialmagnetic motion processing units (MPUs) and electromyography (EMG). Derived from the proposed architecture, a device called Imocap was developed. Imocap gathers and uses the edge-cutting features of MPU + EMG technology to perform a complete measurement in the arm and forearm segment in the human body. The literature review of the methods and tools for the biomechanical movement capture is presented in first place, followed by the techniques and applications of the bioparameters collection. Finally, this paper shows the proposed architecture and the description of the Imocap system, some applications and discussion. As future work, Imocap aims to provide the necessary information in an electronic control system for a rehabilitation platform based on robotic exoskeletons. [ABSTRACT FROM AUTHOR]

This paper analysed the processes of technology transfer 4.0, its conditions and the main transferable technological trends in Latin America. The complexity approach in the ecosystem allowed to explain how the actors or subsystems are (re)adapted or (re)learned based on their interaction without being managed by any specific entity or component. The methodological process consisted of a scientometric analysis, a thematic analysis based on the projects financed with public resources from 2002 to 2018, and an analysis of the innovation ecosystem in the emerging region of the Mexican Bajío. The findings showed the relevance of intermediate organisms in social leadership for technology transfer; big data, IoT and cloud computing are the main technologies 4.0 that are potentially transferable to respond to territorial heterogeneous conditions. [ABSTRACT FROM AUTHOR]

The mining in Mexico is momentous in the integration of national wealth and therefore relevant in the National Economic Policy. The richness of minerals such as copper, gold, silver, zinc, among others, is extensive. This industry has more than 300 years in operation and has been triggering economic transformations in several regions, creating a significant spillofofing of jobs and economic benefits that impact national and regional GDP. This underscores the importance of studying its position in the face of sustainability, in addition to the significant effect on ecosystems and the community surrounding the exploitation veins. This paper takes as a prototype a mining group in Sonora and San Luis Potosí, applying a qualitative study of sustainability practices. [ABSTRACT FROM AUTHOR]

The aim of this paper is to reflect on the educational training of Mexicans to join the digital industry in the workplace. The article was prepared based on documents from international organizations and official national sources on the national education system and the evaluation results. The results show shortcomings in the adaptation to the digital industry, generated by the low level of education of the population and the lack of quality and relevance of education. Lines of action are proposed for the different levels of educational training and facilitate the development of skills in digital environments. [ABSTRACT FROM AUTHOR]

This paper presents the design and implementation of a behavior-based control scheme. The construction of the set of behaviors is based on the use of fuzzy logic as a means for materializing the designer's knowledge into the behaviors. The behavior set was established by left and right wall following and obstacle avoidance. These three behaviors were programmed and coordinated by a subsumption architecture or behavioral inhibition. Behavior simulations and coordination scheme design were tested by means of real experiments using a mobile robotic platform. Finally, the results are presented, where the control actions are executed by the robotic system achieving a secure navigation. [ABSTRACT FROM AUTHOR]

The objective of this paper is describe the method to locate strawberries and to evaluate their maturity by means of image processing. The detection was realized according to the quantity of the red color and the ripeness with the green/yellow color in the surface of the strawberry. The embedded system Raspberry Pi 2 and a Picamera were used for the described process. The implemented algorithm was written in Python and additionally the Open CV libraries were used. This algorithm was applied in a strawberry harvesting machine that performs the processes of: identification, ripeness evaluation, and harvesting. The processes are developed in real time under different established illumination conditions. The program identified all the strawberries and recognized the maturity in a 76.67%. The presented paper pretends to help the strawberry harvesting and selection processes. [ABSTRACT FROM AUTHOR]

In Colombia, social networks have become a powerful tool to disseminate political opinions, especially during the campaign period in the national presidential elections. This paper proposes a hybrid model to predict the outcome of the first round of presidential elections in Colombia in 2018, which aims to minimize absolute error and improve the quality of the final prediction. User activities on Twitter and Facebook were recorded and analyzed with artificial intelligence algorithms, resulting in an accurate prediction consistent with reality. As a core result is highlighted that the RMSE of the hybrid model is around 2.47%, surpassing on average the RMSE of the country's most prominent traditional polling firms. Additionally, the value of electoral abstentionism was also predicted with a differential error of 1.72% in relation to the real value, demonstrating the reliability of the proposed methodology. [ABSTRACT FROM AUTHOR]

This paper describes a process of semi-automatic systematic reviews in scientific research. On the one hand, it is presented a software prototype based on artificial intelligence, semi-automatic systematic reviews tool. On the other hand, a study case of a phd thesis project shows the maps and information with aggregate value. In addition, the software prototype were evaluated by 40 students of master and Ph.D projects, they report the utility of the software tool by a survey. This work presents the modules and functionalities, software architecture and software deployment. Furthermore, a comparative study of a set of similar software tools has been conducted according to the following criteria: input files, analysis and mapping, and software license. Finally, it is discussed the results of the comparative study, the implementation of artificial intelligence techniques, the software scalability and the easiness of include new analysis and maps. [ABSTRACT FROM AUTHOR]

This paper proposes the development of a virtual environment of periodic table to acquire a tool as a support the learning of chemistry, using virtual reality techniques. first, the characterization of the different concepts of the periodic table and that concerning Virtual Reality was carried out, then, the architecture components were designed, the database was modeled and the mockups were made, from this, the prototype of the periodic table was implemented through virtual reality techniques and 3D modeling and finally, through a control group of students rolled in organic chemistry course in Politecnico Jaime Isaza Cadavid, teachers, and other people the results of the virtual environment were validated, after that, the feedback was made based on the surveys. [ABSTRACT FROM AUTHOR]

The aim of the paper is to analyze trade union transnationality as a tool for global change and equity, taking as reference the development in trade union organizations. The research is qualitative and is assumed from a postpositivist paradigm with ontological foundation. For the interpretation of the data the hermeneutic analysis and the heuristic were used. The results showed that for trade union transnationality to exist, organizations must go through a structured process of satisfying conditions. [ABSTRACT FROM AUTHOR]

The objective of the paper is to characterize the entrepreneurs and entrepreneurs of the tourism sector in Esquel, Argentina, from an entrepreneurial perspective. It is based on the hypothesis that the majority of enterprises are family SMEs with low growth potential. For the methodological development a semistructured survey was applied to a sample of entrepreneurs of the tourism sector, representative of the total and characterized as style life, which are those that seek to achieve their personal development rather than develop dynamic ventures, because their ultimate goal is to sustain a determined lifestyle. Most companies are family, small and medium-sized, that work on a small scale to sustain themselves in the market. [ABSTRACT FROM AUTHOR]

This paper presents an algorithm oriented to improve the security conditions of electric power systems. The proposed algorithm performs a semi-exhaustive search of the possible configuration of the system substation with the objective of minimizing overloads presented in single contingencies (N-1 criterion). Topological modifications are made by changing the state of switches in substations. Results are presented for the IEEE 118 bus test system showing the effectiveness of the proposed algorithm. [ABSTRACT FROM AUTHOR]

This paper presents the procedure of tuning and simulation of an adaptive predictive control strategy to control the longitudinal and latero-directional movements of a unmanned aerial vehicle (UAV), using the Matlab ® - Simulink® platform. Uses the mathematical model of a UAV which are initially performed simulations of the system in open loop, identification is carried on online, and predictive control and PID controllers algorithms are implemented with the parameters obtained, to control the angle of pitch, roll and yaw. Control strategies used presented a good performance and manage to stabilize the aircraft properly. Finally, they are presented and analyzed the results of the performance of the system with predictive control and PID control using metrics of the integral of the error and of the work of the manipulated variable. [ABSTRACT FROM AUTHOR]

This paper tries to highlight the primordial matrices of Sergio Almaraz's thought and we do so both in relation to the time he had to live and the projections of his thought in the current course of the Bolivian political process. We are not only interested in making a more or less reflective remembrance of what Almaraz's thought has been and is, but also in relieving its repercussions and meanings in the face of the challenges of the present time. [ABSTRACT FROM AUTHOR]

The aim of the paper is to determine the variables associated with the development of Burnout syndrome (BOS) in officials of a penitentiary in Arica, Chile. We designed a cross-sectional study of a retrospective ex post facto nature, with a correlational scope, and a sample of 290 people. Normative criteria of Gil-Monte and Peiró were applied to determine the BOS levels, finding that 164 participants (56.6%), 124 (42.8%) and 194 (66.9%) experienced high levels of BOS in personal fulfillment, emotional exhaustion and depersonalization, with a prevalence of BOS of 21.4%. The regression models allow to explain the scores for the three dimensions of the BOS from the independent variables. [ABSTRACT FROM AUTHOR]

The paper proposes an Integrated Single System (SUI) to strengthen management systems ISO 9001, ISO 14001, OHSAS 18001 and ISM Code of four business units of a corporate operating in the marine oil industry in Mexico, in a competitive environment. The research is quantitative and part of the process analysis, consultation and selection of specific elements to improve competitiveness and to develop an SUI proposal aligned with internal control. Process performance indicators are presented and implemented through a Gantt chart. The limitations that are presented are the persistence to manage, independently, the financial results of the projects and the lack of synergies to make the organization more efficient. [ABSTRACT FROM AUTHOR]

The article analyzes how state policies, influenced by private interests, reinforce and expand social inequality and give rise to an accounting ethic that does not question actions and is aimed at satisfying corporate interests. It shows how states are absorbed by organizations that pursue short-term benefits and totalitarian control of the economy. The topic of leaks related to offshore organizations and tax havens is examined, revealing the ethical deterioration of the accounting professional. Finally, it is concluded that the public accountant must be guarantor of public trust and that his actions have social repercussions. [ABSTRACT FROM AUTHOR]

In the bread industry of our country, it is very common to find production processes that are directly and indirectly affected by the low level of technology that exists in terms of the design and construction of the ovens. This fact is reflected in the inconveniences that take place during the baking process. Baking is a process that plays an important role in the quality of the product, which is mainly influenced by the temperature during batch cooking. Therefore, this paper shows the evaluation temperature profiles and flow velocity inside the oven and verifies the problems that arise in the heat transfer of the breads by means of the computational tool CFD (Computational Fluid Dynamics), in order to propose three alternatives for redesigning the oven that result in improvements in the distribution of the flow and the processes of heat transfer and momentum inside it, in order to establish a comparative framework that allows selecting the most optimal proposal for the baking process. [ABSTRACT FROM AUTHOR]

This paper presents a methodology for the assessment of distributed generation (DG) implementation programs in power systems. The assessment of such programs is performed through different indexes that consider the chargeability and voltage profile of the network under different operative scenarios. Additionally, the effect of simple contingencies (N-1 criterion) was taken into account. Initially, the indexes are used to diagnose the system and identify critical elements and scenarios. Subsequently, the effect of the implementation of DG programs in the network is evaluated when it is distributed uniformly and when it is located in the critical nodes identified in the base case. Several tests were performed on the IEEE 24 and 57 bus test systems. Results show that DG leads to an important reduction of the criticality of both lines and operative scenarios when located in strategic nodes. [ABSTRACT FROM AUTHOR]

This paper presents the design of a linear quadratic gaussian (LQG) controller to regulate the pitch, elevation and travel angles of a helicopter with three degrees of freedom (3 DOF). The LQG controller was designed on the basis of a linear model and the regulator parameters were adjusted based on the simulations performed with the non-linear model, evaluating the transient response of the system in the closed loop for different values of the reference signal, guaranteeing obtain the greatest variation of the angles around the equilibrium point. The experimental validation was done using a prototype built by the authors; the transient response of the simulated data was compared against the experimental data, for the three degrees of freedom of the helicopter, observing that the mathematical model adjusts to the dynamic of the prototype and the conditions of design were fulfilled. [ABSTRACT FROM AUTHOR]

The aim of this paper is to establish the valorization of 49 fruit waste as possible raw material in the combustion and pyrolysis process. The valorization of fruit waste is based on the combustibility index and the atomic ratios H/C and O/C (Van Krevelen diagram), which are obtained by proximate analysis, ultimate analysis and heating value. It was found that the heating value decreases with the combustibility index, which is higher in seeds than in peels. Also, it was found that for a higher atomic ratio H/C and O/C, the heating value of waste is lower. It was concluded that the waste: orange, lemon and auyama seeds, and chontaduro peels, which have a higher calorific value of 15,86; 17,07; 17,35 and 16,58, and a combustibility index of 21.55; 14,02; 17.51 and 11,42, respectively. These three wastes are recommended as raw materials for a stable flame combustion, with low ignition temperature and for the obtaining of liquid and gaseous fuels through the pyrolysis. [ABSTRACT FROM AUTHOR]

This paper presents the design and implementation of a multivariable system control for a productive process of drying of wet product on a Jet dryer, using PI controllers and simplified decoupling. The main goal of this implementation is to reduce the amount of non-compliant product that is generated at a company in the mining sector, for manual manipulation of input and output variables, by the strong interaction between them and the effect of the disturbances in the process that generated losses both in time and in the product. For the design, an identification of the process was carried out, then the PI controllers were estimated offline and finally the decoupling design was made. The results yielded from the simulation and the implementation in the process demonstrated the effectiveness of the designed control system. [ABSTRACT FROM AUTHOR]

The objective of this paper is to start from the political ecology and the philosophy of the liberation, to present a critique to the Agreements of Climatic Change in Paris 2015, given the little or null effectiveness of the environmental policies that are proposed. For this purpose, a critical theoretical essay was carried out on the current capitalist model and its conflicts regarding sustainable development. The methodology used is a critical test to the production-technology contradiction that capitalism poses to civilization and humanity. The results indicate that there are conflicts between the environmental policies specified in said signed climate change agreement, based on their effectiveness for humanity and nature, such as an expanded reproduction of capital vs. life. [ABSTRACT FROM AUTHOR]

This paper presents partial results of a research project endorsed by the UNPSJB. It starts by exposing the problematic situation under study and a description of the goals and methodology of the project. Next, the status of the accounting research with historical profile and the temporal space location of the institution in its economic and legal context is presented. In the central body, the first results of the investigation are shown with a status of the accounting practice in the place and time studied and the accounting analysis in the first year of the company. Finally, the degree of fulfillment of the proposed objectives is explained, as well as certain questions for the future development of the project. [ABSTRACT FROM AUTHOR]

This paper situates the origin and meaning of promoting equality in the opportunity of access to higher education and the origin of the typology of the development of the higher education system regarding its transition between the elite, mass and universal phases. We review the documents that initially raised the concepts and are the international reference in terms of criteria and objectives to be achieved (UNESCO, 1998, Trow, 1973). The goal is to reflect on the impact of misinterpreting the equal opportunity and universalization in the achievement of economic well-being that is recognized as a result of higher education. Fact that is happening and generates unexpected economic results. [ABSTRACT FROM AUTHOR]

The paper explores content related to the so-called logos in terms of formalization, reason and the noetic, in the sense of the potential and the horizon of the subject. From this reference is located the so-called discourse. In the discursive framework, communicability is mentioned as a phenomenon of accounting, because it uses messages. In this way, the message is crossed by discourses and codes characterizing the linguistic system of accounting. For this reason, the relationship between event-meaning and discourse becomes important, in which the subject acquires a vital role. In these senses, the experience of the subjects is important, as well as the elucidation of the code in accounting. The writing leaves open the question about whether accounting can talk about events. [ABSTRACT FROM AUTHOR]

Hydrodynamic interaction is a sensitive process for gravity concentration equipment. Because of the nonlinearity and complexity of interaction dynamics due the solid particles and water, reliable mathematical models are needed to perform plant width design (PWD)-oriented tasks. To this end, in this paper we present a study of particle motion in a water oscillating flow subjected to a sinusoidal profile on a jig device, which is a high yield and high recovery gravimetric concentrator device widely used in minerals processing. A mathematical Eulerian-Lagrangian model (ELM) is used where fluid motion is calculated by solving the Navier-Stokes and continuity equations by a widely used numerical procedure call Semi-Implicit Method for Pressure Linked Equations algorithm (SIMPLE). The motion of individual particles is obtained by a forces balance applying the Newton's second law of motion through the action of forces imposed by the water and gravity. Liquid-solid interactions forces are calculated by the mathematical Eulerian-Lagrangian model extended to a particle suspension having a wide size and density distribution. The calculation and comparison of Basset, pressure gradient and virtual mass forces with other forces (drag and buoyancy) acting on particle trajectories in water oscillating flows were carried out under turbulent regimen flow. It was found that Basset, pressure gradient and virtual mass forces have a significant effect on the particle's trajectories affecting their subsequent stratification. Furthermore, the conditions under which these forces can be neglected in the jig's hydrodynamic model were studied. The study demonstrates significant differences in the particle trajectories for various size and density distribution. [ABSTRACT FROM AUTHOR]

Mexico City is one of the largest in the world. We speak of 23.6 million people in the metropolitan area (8.5 in D.F. and 15.1 in Edo. of Mexico), and 112 million in the country (INEGI, 2015). Central Mexico, it's a meeting point for economic, social and recreational activities, and creates multiple organizations. These companies employ many people daily. This paper explores the possibility of solving some of the pollution, health and economic problems through the use of "Telework", as well as identify their cultural barriers. For this purpose, it begins with a literature review. Next, it establishes the problem approach and working hypotheses. Finally, the study design and results analysis are shown. [ABSTRACT FROM AUTHOR]

The following paper relayed the opinion of 28 Gran La Plata entrepreneurs applying Corporate Social Responsibility (CSR) in their companies, in order to investigate: what are the CSR practices implemented by companies, to what extent do they impact the components of the creation of value, in the attributes of value creation, and finally analyze if there is a relationship between the positive effects of CSR and certain characteristics of companies. The fundamental survey instrument was a questionnaire and also some interviews. Regarding the methodology, frequency tables, test of means and tests Chi-square of Pearson were realized. The research made clear that entrepreneurs value the contribution of CSR practices to good image, as well as to the competitive position, innovative capacity of the company and the generation of growth opportunities. [ABSTRACT FROM AUTHOR]

This paper describes an artificial vision application aimed at the automation of the written exams grading process, for the multiple-choice exams kind. A digital camera is used for capturing images from the answer sheet, which are then adapted and processed for the sake of assessing the final grade of the test. The image processing is based on filters and resizing heuristic algorithms with low complexity, which aims at implementing the obtained application on a mobile platform. Obtained results are promising, with a success rate of about 97 %, and with a suitable tolerance regarding changing conditions of lighting and orientation of the taken images. [ABSTRACT FROM AUTHOR]