Abstract Taekwondo, originally a Korean martial art, is well known for its kicks. One of the most frequently used kicks in competition is Bandal Chagui or roundhouse kick. Excellence in Taekwondo ...relies on the ability to make contact with the opponent's trunk or face with enough force in as little time as possible, while at the same time avoiding being hit. Thus, the distance between contestants is an important variable to be taken into consideration. Thirty-one Taekwondo athletes in two different groups (expert and novice, according to experience in competition) took part in this study. The purpose of this study was to examine both impact force and execution time in a Bandal Chagui or roundhouse kick, and to explore the effect of execution distance in these two variables. A new model was developed in order to measure the force exerted by the body on a load. A force platform and a contact platform were used to measure these variables. The results showed that there are no significant differences in terms of impact force in relation to execution distance in expert competitors. Significant and positive correlations between body mass and impact force ( p <.01) seem to mean that novice competitors use their body mass to generate high impact forces. Significant differences were found in competitive experience and execution time for the three different distances of kicking considered in the study. Standing at a certain further distance from the opponent should be an advantage for competitors who are used to kick from a further distance in their training.
► An energy audit is a study aimed at improving energy efficiency in buildings in use. ► Problems arise because energy audits are performed at a certain point in time and are not continuous. ► A ...methodology for the continuous assessment of energy efficiency in building in operation is proposed. ► Energy rating indices, proposed in a previous work, to perform energy characterisation are used. ► Results are obtained for 55 buildings of the Universitat Politècnica de València, and for an entire year.
Engineers often conduct energy audits in buildings in use with the aim of improving the energy consumption of the facilities. The problem with this traditional approach is that the audits take place at a given instant in time. Subsequently, it is necessary to track the amount of energy continuously consumed in buildings in order to deal with an energy efficiency problem. This paper proposes the continuous assessment of energy efficiency in buildings using different energy rating factors. These factors have already been presented in other works by the authors, and the usefulness of these factors for assessing the energy performance of buildings and identifying wasted energy has been proven. This article presents the results of applying the methodology in 55 buildings located on the Universitat Politècnica de València campus during an entire year.
Multidimensional binary pseudo-random pulses are extremely useful for the set-up calibration and testing of radioactivity measuring equipment. A new method of generation of such signals, based on the ...parting operation of labeled pulse trains, is presented. The concept of a general coincidence ratio is introduced. Digital window comparators and prohibited or permitted state programmers capable of performing the parting operation and controlling the values of the coincidence ratio are proposed.
Low tidal volume (VT) during anesthesia minimizes lung injury but may be associated to a decrease in functional lung volume impairing lung mechanics and efficiency. Lung recruitment (RM) can restore ...lung volume but this may critically depend on the post-RM selected PEEP. This study was a randomized, two parallel arm, open study whose primary outcome was to compare the effects on driving pressure of adding a RM to low-VT ventilation, with or without an individualized post-RM PEEP in patients without known previous lung disease during anesthesia.
Consecutive patients scheduled for major abdominal surgery were submitted to low-VT ventilation (6 ml·kg-1) and standard PEEP of 5 cmH2O (pre-RM, n = 36). After 30 min estabilization all patients received a RM and were randomly allocated to either continue with the same PEEP (RM-5 group, n = 18) or to an individualized open-lung PEEP (OL-PEEP) (Open Lung Approach, OLA group, n = 18) defined as the level resulting in maximal Cdyn during a decremental PEEP trial. We compared the effects on driving pressure and lung efficiency measured by volumetric capnography.
OL-PEEP was found at 8±2 cmH2O. 36 patients were included in the final analysis. When compared with pre-RM, OLA resulted in a 22% increase in compliance and a 28% decrease in driving pressure when compared to pre-RM. These parameters did not improve in the RM-5. The trend of the DP was significantly different between the OLA and RM-5 groups (p = 0.002). VDalv/VTalv was significantly lower in the OLA group after the RM (p = 0.035).
Lung recruitment applied during low-VT ventilation improves driving pressure and lung efficiency only when applied as an open-lung strategy with an individualized PEEP in patients without lung diseases undergoing major abdominal surgery.
ClinicalTrials.gov NCT02798133.
El presente trabajo de tesis ha sido desarrollado para la unidad de negocio de Chiclayo de;
la empresa Ransa Comercial S.A., por cuya construcción y puesta en marcha, la compañía;
invirtió S/14 ...millones en 2015. Esta sede brinda los servicios de almacenamiento de secos,;
almacenamiento a temperatura controlada, y transporte y distribución. Cuenta con una;
infraestructura de primer nivel y realiza operaciones de altos estándares, cumpliendo con normas;
y regulaciones exigidas tanto por el Estado, como por sus clientes, a través de la implementación;
de certificaciones de calidad y seguridad.;
No obstante, se identificó que la persistente falta de rentabilidad de esta unidad de;
negocio representa un serio riesgo para la continuidad de sus operaciones en el mediano y largo;
plazo. Síntoma de ello es el bajo nivel de ocupación que tienen sus almacenes actualmente. En;
ese sentido, se propone como alternativa de solución la implementación de siete acciones, dos de;
ellas referidas al incremento de ventas y cinco a la disminución de costos, siendo todas ellas una;
solución integral, resultado de un análisis holístico del problema.;
En consecuencia, los beneficios estimados llevan a la utilidad operativa desde sus valores;
negativos actuales, hasta ser positiva en el lapso de tres años, tiempo en el que se espera un;
incremento de ventas del 70% respecto del 2018, lo que hará posible que se reviertan sus;
resultados actuales; teniendo como fundamento para lograr ello, la existencia de un mercado;
potencial y las oportunidades internas aún no exploradas de la unidad de negocio y del propio;
Ransa.
This thesis work has been developed for Chiclayo business unit of the company Ransa;
Comercial SA, whose construction and commissioning, the company invested S/ 14 million in;
2015. This business unit offers dry storage services, storage with temperature control, transport;
and distribution. It has a first class infrastructure and makes out high level operations, complying;
with the standards and regulations required by the state and its customers, through the;
implementation of quality and safety certifications.;
However, it was identified that persistent lack profitability of this business unit represents;
a serious risk for the continuity of its operations in medium and long term. The symptom of this;
is the low level of occupation that their stores currently have. In this sense, implementation of;
seven actions is proposed as alternative solution, two of which refer to increase sales and five to;
reduction costs, all of them are an integral solution, resulting of a holistic analysis of the;
problem.;
Consequently, estimated benefits lead to the operating profit of current negative values, to;
be positive in three years, time in which to increase sales of 70% is expected respect to 2018, it;
will allow reverse the current earnings, having as based to achieve it, the existence of a potential;
market and internal opportunities not yet explored by the business unit and Ransa itself.
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