Walrasian prices in a market with consumption rights

In this paper we consider an exchange economy where there is an external restriction for the consumption of goods. This restriction is defined by both a cap on consumption of certain commodities and the requirement of an amount of rights for the consumption of these commodities. The caps for consumption are imposed exogenously due to the negative effects that the consumption may produce. The consumption rights are distributed among the agents. This fact leads to the possibility of establishing licence or consumption rights markets. These consumption rights do not participate in agents' preferences, however the individual's budgetary constraint may be modified, leading to a reassignment of resources. The aim of this paper is to show the existence of a Walrasian equilibrium price system linking tradable rights prices with commodity prices.competitive equilibrium, quotas, consumption rights, cap-and-trade program.

Use of Natural-Fiber Bio-Composites in Construction versus Traditional Solutions: Operational and Embodied Energy Assessment

During the last decades natural polymers have become more and more frequent to replace traditional inorganic stabilizers in building materials. The purpose of this research is to establish a comparison between the most conventional building material solutions for load-bearing walls and a type of biomaterial. This comparison will focus on load-bearing walls as used in a widespread type of twentieth century dwelling construction in Europe and still used in developing countries nowadays. To carry out this analysis, the structural and thermal insulation characteristics of different construction solutions are balanced. The tool used for this evaluation is the life cycle assessment throughout the whole lifespan of these buildings. This research aims to examine the environmental performance of each material assessed: fired clay brick masonry walls (BW), concrete block masonry walls (CW), and stabilized soil block masonry walls (SW) stabilized with natural fibers and alginates. These conventional and new materials are evaluated from the point of view of both operational and embodied energy

Effects of Six Weeks of Flywheel Single-Leg Romanian Deadlift Training on Speed, Jumping and Change of Direction Performance.

Several studies have confirmed the efficacy of flywheel training, mainly in the bilateral half-squat exercise. The aim of the present study was to analyze the effects of single-leg Romanian deadlift flywheel training on speed, jumping and change of direction performance. Seventeen young healthy males underwent two periods of 3-week training based on two weekly sessions of 3 sets × 7 repetitions or 4 sets × 7 repetitions of single-leg Romanian deadlifts (0.037 kg/m² moment inertia) with their dominant and non-dominant leg. After the first three weeks of the program, the CMJ, the 10 m, 30 m and total sprint times, as well as the COD-90 test, presented likely substantial beneficial effects and a small decrease in the relationship between the sprint and COD-90 test performance. After the second period of the three-week training, likely detrimental effects were observed in some of the change of direction conditions and an increase in the relationship between the sprint and the COD-180 performance. It could be hypothesized that most of the flywheel training effects reported in the traditional protocols lasting a minimum of 5–6 weeks would occur in the first weeks of training.post-print1482 K

Propuesta de un sistema de riego controlado por PICS alimetado con energía fotovoltaica para los jardines de los pabellones pares de la UNAN-Managua

La elaboración del diseño de un sistema de riego controlado por PIC’s y alimentado con energía solar para el sector de edificios pares de la UNAN-Managua RURD, pretende solucionar la problemática del alto consumo en agua potable, este consumo es debido que la universidad actualmente cuenta con un sistema de riego obsoleto y presenta componentes de riego como aspersores en mal estado y con fugas; además del mal uso de las mangueras. El consumo del sistema de riego que emplea hoy en día el Recinto es de aproximadamente C$2, 987,829.00 anuales. Para el diseño de sistemas de riego, se tomó en cuenta las características de cada uno de los jardines del sector de edificios pares del Recinto y las características técnicas de los componentes de riego a utilizar. Para la automatización del sistema se tomó en cuenta tanto la cantidad de jardines como la cantidad de presión que posee la universidad, con estos dos datos se decidió realizar un riego secuencial y de esta forma se programó el funcionamiento del controlador. Otro dato a tomar en cuenta para la elaboración del controlador compuesto por PIC´S es el tiempo necesario para el riego, este nos permite regular y controlar la cantidad de agua que utilizará el sistema, evitando así el desperdicio de agua potable. Cada controlador tiene una capacidad de accionar hasta 20 zonas, por lo que este sistema necesita cuatro controladores para manejar todos los jardines del pabellón par de la universidad. El controlador consta principalmente de dos PIC`S que son los componentes que poseen toda la programación y de los circuitos integrados con protocolo I2C que permite mantener al controlador con fechas y horas sin que se desconfigure al momento de que el equipo se apague. 2 El uso de paneles fotovoltaicos se incluye en este sistema debido que uno de los propósitos es bajar los costos en consumo de agua potable, por lo que no es conveniente incrementar el consumo de energía eléctrica. Por cada controlador se necesita un panel de 100 watts, con un inversor de 55 VAh de 24 voltios, una batería de 3.05 Ah a 73.37 watts; estos valores fueron tomados de cálculos realizados por el consumo que tiene el sistema, tanto del controlador, como bombas de agua y electroválvulas

Natural Stabilized Earth Panels versus Conventional Façade Systems. Economic and Environmental Impact Assessment

More effective construction technologies are needed nowadays in order to reduce construction energy consumption during the life-cycle of buildings. Besides which, it is necessary to consider the economic feasibility and associated costs within the framework of these alternative technologies so as to favouring their practical implementation in the construction sector. In this sense, this paper presents an economic and environmental comparison of a new non-bearing façade construction solution based on the extruded unfired stabilized clay panels as opposed to three traditional solutions with similar physical, thermal, and aesthetic characteristics in terms of the exterior cladding. The proposed panels are a sandwich type configuration with an intermediate insulating material and two exterior pieces manufactured by extrusion with raw earth stabilized with alginate and animal wool fibers. In this paper, details of the constructive technology of the system are provided. From the results obtained, it is possible to conclude that the solution is a valid alternative from the environmental point of view, considerably reducing the GlobalWarming Potential and the Cumulative Energy Demand. And although the environmental improvement of the system can be considered the primary objective of this investigation, on the other hand, once executed, it will also be a competitive constructive technology from the perspective of the system’s final costs

Evaluación de higiene y seguridad en el área de bodega de repuestos en Casa Pellas sucursal Estelí en el segundo semestre 2021

El presente trabajo de graduación evalúa las normas de higiene y seguridad en el área de bodega de repuestos Casa Pellas Sucursal Estelí, con el propósito de ayudar al mejoramiento de las condiciones de las mismas. Se recolectaron datos mediante entrevistas, encuesta y check list para el desarrollo de esta investigación, finalmente se incluyeron los resultados con matriz de riegos basados en los objetivos planteados. El primer resultado está basado en análisis de la situación actual con respecto a higiene y seguridad, el segundo resultado está centrado en los tipos de riesgos problemas lumbares ,estrés térmico, deshidratación ,fatiga visual, cortes y fracturas a los que se encuentran expuestos los colaboradores del área de bodega de repuestos, para concluir, están reflejadas las acciones de mejora tomando como base en este resultado el diagrama de Ishikawa, aplicando esta técnica se logró tener un análisis más detallado ayudando a optimizar las condiciones de trabajo por medio de mantenimiento e inspecciones al área de trabajo. Al desarrollar directrices de mejora se está ayudando al área de bodega y la sucursal en general, tomando en cuenta específicamente al área de bodega de repuestos y sus colaboradores, con el objetivo de optimizar las condiciones de trabajo y reducir la mayor cantidad de riesgos a los que están expuestos, de esta manera brindar mayor protección y seguridad a los colaboradores

DNA moves sequentially towards the nuclear matrix during DNA replication in vivo

<p>Abstract</p> <p>Background</p> <p>In the interphase nucleus of metazoan cells DNA is organized in supercoiled loops anchored to a nuclear matrix (NM). There is varied evidence indicating that DNA replication occurs in replication factories organized upon the NM and that DNA loops may correspond to the actual replicons in vivo. In normal rat liver the hepatocytes are arrested in G0 but they synchronously re-enter the cell cycle after partial-hepatectomy leading to liver regeneration in vivo. We have previously determined in quiescent rat hepatocytes that a 162 kbp genomic region containing members of the albumin gene family is organized into five structural DNA loops.</p> <p>Results</p> <p>In the present work we tracked down the movement relative to the NM of DNA sequences located at different points within such five structural DNA loops during the S phase and after the return to cellular quiescence during liver regeneration. Our results indicate that looped DNA moves sequentially towards the NM during replication and then returns to its original position in newly quiescent cells, once the liver regeneration has been achieved.</p> <p>Conclusions</p> <p>Looped DNA moves in a sequential fashion, as if reeled in, towards the NM during DNA replication in vivo thus supporting the notion that the DNA template is pulled progressively towards the replication factories on the NM so as to be replicated. These results provide further evidence that the structural DNA loops correspond to the actual replicons in vivo.</p

Environmental benchmarking of building typologies through BIM-based combinatorial case studies

Integrated life-cycle assessment (LCA) tools have emerged as decision-making support for BIM practitioners during the design stage of sustainable projects. However, differences between methodologies applied for determining the environmental impact of buildings produce significant variations in the results obtained, making them difficult to be compared. In this study, a methodology is defined for generating environmental benchmarks for building typologies through a combination of BIM-based LCA tools and machine learning techniques. When applied to an 11-story residential building typology with 92 dwellings by varying the constructive solutions of façades, partitions, roof and thermal insulation materials, results fall within a range from 360 to 430 kgCO2eq/m2. The Random Forest (RF) algorithm is successfully applied for identifying the most decisive variables in the analysis (partitions and façades), and shows signs of being useful for predicting the environmental impact of future constructions and to be applied to the analysis of greater scale urban zones

Manejo trombolítico versus endovascular en el accidente cerebrovascular isquémico

Introduction: ischemic stroke is an endemic pathology, of which its approach has been studied since new techniques and technologies have been developed in its treatment. Currently, there are two types of therapies, thrombolysis, and thrombectomy. Objective: the objective of this review is to describe ischemic stroke and compare both therapeutic approaches, their benefits, and limitations in the management of the disease. Method: the design of the review was evaluative and the search for articles was carried out in the PubMed, Cochrane, and SciELO databases, with the following selection criteria: systemic reviews, meta-analysis, clinical and preclinical trials, guidelines for clinical practice, and bibliographic reviews published from 2015 to 2020, with a total of 32 articles and 4 books consulted with adequate quality and validity. Development: mechanical thrombectomy has generated good functional results, with better recanalization rates and a longer therapeutic window than thrombolysis, with direct aspiration being cost-effective and with better results than the application of the stentriever. Conclusions: the primary management of acute ischemic stroke with mechanical thrombectomy by direct aspiration is cost-effective, with better functional results than thrombolysis alone, and is effective with or without it.Introducción: el accidente cerebrovascular isquémico es una afección endémica; su abordaje ha sido objeto de estudio y se han desarrollado nuevas técnicas y tecnologías para su tratamiento. Actualmente existen dos tipos de terapias, la trombólisis y la trombectomía. Pese a que ambas terapias han sido ampliamente estudiadas, existe controversia sobre cuál de estas tiene mejores tasas de recanalización y resultados funcionales. Objetivo: caracterizar el accidente cerebrovascular isquémico comparando los abordajes terapéuticos para el manejo de la patología. Método: se realizó una revisión bibliográfica para la que se consultaron las bases de datos PubMed, Cochrane y SciELO, empleando los descriptores “Accidente Cerebrovascular”, “Terapia Trombolítica” y “Trombectomía” y los siguientes criterios de selección: revisiones sistémicas, meta-análisis, ensayos clínicos y preclínicos, guías de práctica clínica y revisiones bibliográficas publicadas del 2015 al 2020, con un total de 32 artículos y 4 libros consultados con calidad y validez adecuada.Desarrollo: la trombectomía mecánica ha generado buenos resultados funcionales, con mejores tazas de recanalización y mayor periodo de ventana terapéutico, en comparación con la trombólisis, siendo la aspiración directa costo-efectiva, con mejores resultados que la aplicación del stentriever.Conclusiones: el manejo primario del accidente cerebrovascular isquémico agudo con trombectomía mecánica por aspiración directa, es costo-efectivo, con mejores resultados funcionales que la trombólisis por si sola y es eficaz con o sin la misma