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Dactyloscopy or papiloscopy corresponds to the scientific study of digital, palmar and plantar impressions, whose purpose is the infallible or indubitable identification of a subject. There are three levels to identify with greater certainty level 1 (type or fingerprint pattern), level 2 (minutiae or characteristic points) and level 3 (poroscopy and crestoscopy). Therefore, it is necessary to analyze the characteristics of direct fingerprints and direct fingerprints in order to verify the presence of characteristic points and pores to improve the human identification process. 80 samples (54 women and 26 men) were analyzed. Of these, 800 impressions and 800 direct fingerprints with fingerprint buffer and black powder were captured. In footprints with buffer, 71.25 % and 1.25 % were identified with 14 and 6 Characteristic Points respectively and in groups of pores 84 % and 35 % for a group of 1 and groups of 7 and 8 pores respectively. With black powder, only Characteristic Points and no Pores were identified. The number of pores in men was greater than 10 (LR= 2.08) and in women less than 6 (LR= 1.93). The groups of pores were less than or equal to 12 pores (LR= 1.04) for men and greater than or equal to groups of 13 pores (LR=1.28) for women. It was possible to identify groups of pores with a fingerprint buffer but not with chemical powders, which could be used to implement a protocol for the use of level 3 identification. [ABSTRACT FROM AUTHOR]

At the end of the 19th century, various business entities pressed the Chilean State to advance in higher levels of food independence, to maintain the economic progress derived from the nitrate economy. The business groups pointed to a massive concession of public land for the installation of cattle, and one of the areas indicated was the Province of Llanquihue. Using preferentially official documents and publications of business groups, this article aims to delve into both the arguments used by national business groups to carry out livestock concessions and the legal strategies used by the State to implement them, indicating, likewise, the reaction and accommodation of local people to the concessions. [ABSTRACT FROM AUTHOR]

With the purpose of laying the foundations for a critique of sociological reason and making a contribution to shedding light on the relationship between Marxism and sociology, in this paper a set of problematic points of Esteban Torres' La gran transformación de la sociología is addressed. The analysis is divided into three moments. First, the idea of sociology that is used by the author is criticized, challenging by that the bases or foundations of Torres' broader intellectual work plan. In a second step, the conception of Marxism that is defended by the Cordovan academic is assessed, identifying the existing differences between the contribution of Capital's author and the aforementioned social science. As a corollary of both operations, some conclusions are drawn, stating that what must to be done is not to transform sociology but to abandon it. [ABSTRACT FROM AUTHOR]

The critique of "methodological nationalism" constitutes an important advance in the attempt to elaborate a theory of world society adequate to our socio-historical reality. However, I argue that this is not enough if "theoretical nationalism", which consists in assuming that globality is formed in the interaction or interplay between regions and / or states, is not disputed at all. This assumption is in opposition to the idea of "one" world society as postulates the existence of a plurality of regional and national societies. Beyond the fact that this conception may be acceptable within the framework of the epistemological and methodological openness enabled by the "World Paradigm", we point out a set of analytical dilemmas that arise from it. My thesis is that it is necessary to overcome this regionalist worldview to advance not only in a more adequate theory of world society, but also to a better understanding of the way in which inter-regional inequalities are produced and reproduced. [ABSTRACT FROM AUTHOR]

Quartz lithic technology was relevant for the human populations that inhabited the El Alto-Ancasti mountain range (Catamarca) during the first millennium AD. This is characterized by the presence of very simple retouched tools with very low labor investment. However, in the Oyola 7 rockshelter, we have identified a set of projectile points, which show a certain variety of designs, but also a greater work investment due to the bifacial manufacture and certain standardization of sizes and shapes. The main goal of this paper is therefore to present the technological characteristics of this set of projectile points, emphasizing the context in which they come from, a cave with rock art and which is the only archaeological site in which projectile points were recorded in this area of eastern Catamarca. [ABSTRACT FROM AUTHOR]

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The aim of this research was to analyse the influence of the golden point on the number of shots in male and female professional padel players and its relationship with the set. Sample included 2,760 points (1,432 male points and 1,328 female points) from six tournaments of the World Padel Tour circuit of the 2021 season. The results showed a higher number of shots in female padel (9.6±7.20 male vs. 11.28±8.49 female), being the third set in which the highest number of shots are made. In addition, in golden points, a greater number of shots were made comparing with the rest of the points, especially in female padel, and influencing the set in this category, so that in the golden point of the third set is where more shots were. In conclusion, golden points seem to affect the game pattern of the players, especially in female players, increasing the volume of the game, relative to the number of shots per point, being the third set in which the highest number of shots during the golden points. [ABSTRACT FROM AUTHOR]

Disinformation has become a core concept in communications research, related to media, technological and political phenomena that complexify its definition and diagnosis. Although its approach has been mainly quantitative, focus groups have also been used to understand the perception of the audience of this particular issue. This research is part of this second group of studies, and attempts to investigate the notions and discourses on disinformation in the case of Spain. For this purpose, seven discussion groups were conducted, with a structural sample constructed according to employment situation, ideology and age. The results show a perception of the communicative ecosystem structured in two chronological poles, which contrasts a past of reduced information supply – associated with traditional media – with a current informational environment where there is more media diversity, but also less trust in them. The groups point to the overabundance of information and associated disinformation with decontextualisation, low-quality journalism and the economic and political interests of different actors. Discourses outline a scenario of decline in journalism and the public sphere, which is perceived as polarised and emotional. Disinformation is therefore perceived as a multidimensional phenomenon that is associated with issues of major democratic transcendence rather than merely sending hoaxes through the Internet. [ABSTRACT FROM AUTHOR]

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Introduction--An Unmanned Aircraft UAV or UAVS, for its acronym in English, is one capable of performing a flight without the need for a pilot on board. The control techniques applied in unmanned aircraft systems are used to improve the performance and stability of these systems. Several control techniques have been created to automate systems, aiming to improve the performance of these looking for optimal performance conditions. Quadrotors are a type of unmanned aerial vehicle that is currently used due to its ease of Vertical Take-Off and Landing (VTOL), it is an ideal system to apply control laws because of its non-linearity and its unstable behavior in the face of external disturbances, usually environmental variables. Objective--Establish the advantages of the implementation of a robust control based on linear matrix inequalities, compared to a state feedback controller implemented in a quadrotor type unmanned aerial vehicle. Methodology--Two linear control strategies were designed and implemented: control by location of poles and zeros, and control based on Linear Matrix Inequalities LMI; therefore, in this work a linear model of the quadrotor represented in state variables was used. Results--The controllers are stable against external disturbances and disturbances caused by the environment. For the Pitch and Roll angles, the set point was adjusted to 0 degrees, and for the yaw angle, the set point was adjusted to 100 degrees. This paper shows the performance of the control strategy based on LMIs, short response times and maintains an equilibrium point between -2 and 2 degrees on each axis, allowing the quadrotor to stabilize at each angle of rotation. Conclusions--The controller based on LMIs has multiple advantages compared to the state feedback control strategy, since it allows the inclusion of several controller design criteria such as: the control input, the poles location, the definition of the infinite H norm, uncertainties, and disturbances. In addition, the LMIbased controller is presented as a solution to be implemented in a real system as it significantly improved the maximum overshoot, the response to external disturbances, the response time and quadrotor stabilization in the tests carried out. [ABSTRACT FROM AUTHOR]

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Copyright of Magis: Revista Internacional de Investigación en Educación is the property of Pontificia Universidad Javeriana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Open source rhetoric is increasingly applied to culture, but there is little consensus on what it means in this area. The objective of this work is to understand the translation processes of linguistic knowledge from free software and open source movements to the circulation of cultural works during the period 2000-2010. The research presents a qualitative approach, uses the multiple case study method and applies the document review technique. The units of analysis are the Open Access, Open Knowledge and Free Cultural Works initiatives. The article explores the re-significations produced in the translations and points out a group of non-profit organizations governing these processes. [ABSTRACT FROM AUTHOR]

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The teaching and learning process of a musical instrument is intrinsically related to the development of procedural skills, where the acquisition of control in the execution of the actions occupies a highly significant place. From this point we turn our gaze towards the Alexander Technique (AT), where the mind-body is assumed to function in an integrated way. In the present study we examine the impact of its implementation in violin and viola classrooms, in relation to the modeling of specific behaviors to the performance and musical interpretation through a recording technology. To do this, we use the qualitative methodological paradigm, which conforms both to the objectives of our research as well as to the theoretical-practical foundation of AT, characterized by a holistic vision. The study starts from a specific course in this subject for elementary and professional teachers of violin and viola. After its completion, different teachers videotaped their pedagogical practices implementing the TA, which we analyzed through our proposed analytical model of classroom praxis. Using the Atlas.ti software for the treatment of the data from the audiovisual records, the results revealed that the professors subject to research incorporate various aspects of the AT in their pedagogical-didactic classroom action. The conclusions point to a set of potentialities that the application of AT presents in relation to the instrumental teaching-learning process. [ABSTRACT FROM AUTHOR]

one of the techniques to treat oil from oil wells is to use oil treatment trains to separate the three existing phases: gas, oil, and water. One of the equipments that make up the train is the three-phase separator. This work demonstrates the feasibility of using a hierarchical control scheme for an online setting of optimal pressure and temperature setpoints and thus reducing energy consumption in the heat treater. So that the manipulated variables and the set points are within the limits of the safe operation, with this provides an economic and environmental benefit for this plant. The achievement of this optimization is the main contribution of this work. For the development of this work we designed an optimization algorithm based on three hierarchical layers where the first layer refers to direct control (PIDs), the second layer refers to the optimization of steady state objectives (SSTO), the third layer refers to local optimization of objectives (LSSO). For the solution to this problem, we resorted to solutions of linear optimization and nonlinear optimization these algorithms are related to the linearized model of the plant, in other works are usually based on the theory MPC (Predictive Control Model). The simulation of the algorithms was done in Matlab and tested in a simulated plant in Hysys using the Active x server connector that connects the two software. In this experiment, it was possible to save 30% of energy consumption. In turn, it was found that it is possible to relate the plant model with the linear and non-linear optimization algorithms, which concluded that the implementation of these algorithms is feasible in this type of plant for process optimization. [ABSTRACT FROM AUTHOR]

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