bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluation of Applicability of Thermophotovoltaic System in Combi Boiler
Authors: İŞYARLAR Barış , MENLİK Tayfun
Published: October 2019

In this study, thermophotovoltaic
(TPV) system components are examined and introduced, and theoretically, it is
given information about the applicability of the system in combi boiler. The
latest developments in the components of the TPV system, heat source, emitter,
filter and TPV cell, are explained. In addition, the study state how the TPV
system should be integrated into a combi boiler. It is estimated that TPV
system integrated into the combi boiler can produce 36.96 kWh per month in the case
that it has 2% electrical efficiency. The study is stated that the higher TPV
system electric power output can be achieved if the emitter, the filter and the
TPV cell are matched in harmony with each other in the combi boiler, the
distances of these components and the emitter-filter dimensions are arranged. Thus,
a standard family in Turkey can be supplied a certain amount of the monthly
energy demand. In addition, it is explained in the study the issues that should
be taken into consideration when this system is integrated into the combi
boiler.
Mejoramiento del mix de marketing en la empresa Vellísimo Center
Authors: Lamus-García Raquel Zoraya Lamus-García , Lamus-García Tibisay Milena
Published: October 2019

Este trabajo tuvo como objetivo general: Proponer estrategias para el mejoramiento del mix de marketing en la Empresa Vellísimo Center Paraguaná ubicada en Las Virtudes, Punto Fijo – estado Falcón. Teóricamente se sustentó en las concepciones que sobre mix de marketing exponen Kotler y Armstrong (2006) y Kotler (2008). La orientación metodológica es positivista con enfoque cuantitativo, no experimental de carácter descriptivo, orientado a la metodología de proyecto factible (Upel 2012), apoyada en una investigación de campo (Arias 2012). La unidad de análisis estuvo conformada por un universo poblacional igual a la muestra de 35 personas por ser menor de 50 individuos (Castro 2003), a los que se les aplicó una encuesta estructurada (Sabino, 2000), como técnica de indagación, cuyo instrumento fue elaborado con 28 preguntas dicotómicas o cerradas (Kendall & Kendall, 1995).  Para el análisis de los datos se utilizaron la tabulación, la descripción de frecuencias y la posterior aplicación y estudio de resultados mediante el uso de la estadística descriptiva para tales fines, los cuales arrojaron una alta correlación de valores que determinaron la necesidad de diseñar la estrategia propuesta, lo que le imprime un valor agregado que es el incremento de los ingresos económicos de la empresa por medio del crecimiento de las ventas y ganancias monetarias.
Análisis estratégico en pequeñas empresas
Authors: Macías Guadamud Emilio
Published: October 2019

La investigación tuvo por objetivo analizar la factibilidad de un plan estratégico en pequeñas empresas, específicamente en automotriz Gribel, siendo de tipo descriptiva con una población maestral de 15 personas que laboran en la automotriz Gribel, ubicada en la ciudad de Manta – Ecuador. A pesar de que la empresa tiene objetivos claros y conocidos por la mayoría del personal, la mayoría de la muestra no participo en su creación. Estos resultados confirman la disposición de cambio y transformación evidenciados en la muestra estudiada, dado el alto porcentaje de la misma que insiste en la creación de nuevos procedimientos que sean conocidos y manejados por todos. Se concluye que es necesario el diseño de un plan estratégico para la empresa objeto de estudio, por cuanto los principios de la planificación estratégica le permitirán a los trabajadores estar capacitados para resolver cualquier eventualidad y potenciar así el crecimiento de la empresa.
Gestión del talento humano desde la perspectiva de capacitación del personal y rendimiento laboral
Authors: Palma-Avellán Ana Manuela
Published: October 2019

La investigación tuvo por objetivo analizar la gestión del talento humano desde la perspectiva de capacitación del personal y rendimiento laboral en la cooperativa RTML, teniendo como muestra poblacional 35 personas que laboran en la cooperativa objeto de estudio. Se evidencia que la mayoría encuestada, manifiesta que no existen en la cooperativa instrumentos que puedan medir el rendimiento laboral del talento humano; así mismo, no existen normas que indiquen los criterios de productividad exigidos por la cooperativa, como tampoco, le brindan capacitación con el fin de que mejores en la labor que realizas en la cooperativa.  Al no contar con capacitación específica para el puesto de trabajo, se corre el riesgo de que la organización asuma que la persona tiene los conocimientos suficientes y actualizados para asumir eficazmente su labor; cuando podría no ser así.
Aprendizaje organizacional y la gestión de calidad en organizaciones cooperativa
Authors: Mendoza-Orellana Stalin Carmelo
Published: October 2019

La investigación es de tipo correlacional – transeccional, con el objetivo de determinar la relación entre el aprendizaje organizacional y la gestión de calidad de la cooperativa de suministros tecnológicos Lormart, ubicada en la ciudad de Manta – Ecuador. La población estuvo conformada por 23 personas de la empresa de estudio. Los resultados de ,062 se focaliza en una correlación positiva moderada y significación bilateral de ,777 lo cual implica que la tendencia es acercarse a 1, lo cual implica que existe correlación significativa entre las variables y que la gestión de calidad depende proporcionalmente del aumento del aprendizaje organizacional para mejorar y perfeccionarse en beneficio de la organización. La cooperativa de suministros tecnológicos Lormart, se encuentra en capacidad de contar con líderes gerenciales en razón de potenciar las habilidades y competencias del talento humano de la organización.
Rancang Bangun Boost Converter Untuk Charging Baterai Unmanned Aerial Vehicle (UAV) Bertenaga Surya
Authors: Soedjarwanto Noer
Published: October 2019

Abstrak — Saat UAV melakukan suatu misi, UAV dituntut untuk memiliki durasi terbang yang lama sehingga misi yang dikerjakan akan bisa selesai. Durasi terbang yang pendek akan menyebabkan pekerjaan menjadi lebih lama selesainya. Konsumsi daya yang tinggi dibandingkan dengan kemampuan penyimpanan energinya yang terbatas, akan menyebabkan durasi terbang menjadi pendek. Salah satu alternatif untuk meningkatkan durasi penerbangan yaitu dengan menambahkan panel surya sebagai sumber energi tambahan. Dengan Adanya sumber energi lain yaitu menggunakan panel surya pada sistem charging baterai untuk menyuplai energi pada sistem daya di UAV, maka UAV dapat digunakan ke beban dan sekaligus dapat melakukan charging baterai. Sehingga durasi terbang dari UAV bertambah lebih lama dan memudahkan para pilot UAV atau pengguna UAV dalam melakukan charging baterai. Sistem charging baterai pada UAV bertenaga surya menggunakan DC-DC konverter yaitu boost converter. Boost converter dipilih karena dapat menghasilkan tegangan keluaran yang lebih besar dari tegangan sumber, dengan cara mengendalikan sinyal PWM (Pulse Widht Modulation). UAV tanpa panel surya hanya memiliki estimasi durasi terbang hanya 1 jam. Dengan menambah sistem charging baterai baterai pada UAV bertenaga surya estimasi durasi terbang menjadi 90 menit.

Kata kunci — UAV, DC-DC Konverter, Boost Converter , Panel Surya.
EFFECTIVENESS OF THE APPLICATION OF ORGANIC MATTER AND TRICHODERMA VIRIDE FROM SUPPRESIVE SOIL TO CONTROL FUSARIUM WILT ON BANANA PLANT
Authors: Ivayani Ivayani , Ginting Cipta , Yusnita Yusnita , Dirmawati Suskandini Ratih
Published: October 2019

Effectiveness of the application of organic matter and Trichoderma viride from suppresive soil to control fusarium wilt on banana plant. Fusarium wilt disease caused by Fusarium oxysporum f.sp. cubense is one of the problems in banana production. This research was aimed to evaluate the effect of  Trichoderma viride isolated from suppresive soil and organic matter on controlling fusarium wilt on banana plant. The efficcacy trial consisted of 12 treatments and four replications within each treatment. Each experimental unit consisted of 10 plants. Organic matters used were rice straw, cassava peel, and compost. Treatments were arranged in a randomized complete block design. Data obtained were analyzed by analysis of variance followed by orthogonal analysis (P≤0.05). Application of T. viride suppressed disease incident up to 65%. The highest disease incident occurred in plants treated without T. viride and organic matter and in plants treated with organic matter only (78.33%). Disease incidence in plants treated with T.viride was lower than those treated with the combination of T. viride and organic matter. Different application times (in nursery or soil medium) did not significantly affect fusarium wilt incidence. The type of organic matter did not significantly affect the incidence and severity of fusarium wilt.
Analisis Hasil Belajar: Dampak Pembelajaran Berbantuan Software pada Pembelajaran Statistika
Authors: Novalia Novalia
Published: October 2019

This study aims to determine the effect of using Excel and SPSS on student learning outcomes in advanced statistics courses. This type of research is quantitative research with experimental research designs. The action taken is an effort to develop learning technology, namely the constructivism learning approach that is packaged in statistical learning through the use of Excel and SPSS. Based on the analysis of learning outcomes data from statistical learning without the help of programs, with the help of Excel and SPSS programs, there is no significant effect of using Excel and SPSS programs on student learning outcomes. There are several things that cause the use of Excel and SPSS programs do not affect student learning outcomes, namely (1) Inadequate infrastructure, (2) students 'basic statistical skills are still low and (3) students' interest in learning statistics is still low.
Pain and suffering as hermeneutical keys for the understanding of Weltanschauungen
Authors: Cortés Sánchez Francisco Javier
Published: October 2019

The sociocultural variables influence the interpretation of pain and suffering. This fact leads to rethinking the way of understanding humans. In this article we reflect on pain and suffering from its symbolic dimension. In this way, Weltanschauungenis presented as a key to understanding and interpreting humans, taking pain and suffering as a starting point.
Sobre la sociedad civil como fuente de pluralismo: interrogantes previos a una afirmación.
Authors: Reyes Lobos Maximiliano
Published: October 2019

Frente a los riesgos del monopolio de significados sobre la vida en común, la sociedad civil puede actuar como fuente de reconocimiento y desarrollo de identidades, pero afirmarlo requiere que previamente se establezcan nuevos puntos de partida para el análisis sobre su significado. Apoyados en esta premisa, proponemos un cuestionamiento a la apropiación teórica y práctica que desde la dimensión política se ha hecho y establecemos la redefinición de lo cívico como el sustento para un tipo de pluralismo basado en la capacidad para expresar y conocer por medio de la razón.
Conciencia moderna y experiencia de extrañamiento. Los vértigos de Antoine Roquentin
Authors: Puelles Romero Luis
Published: October 2019

A partir de la Melancolía de Lucas Cranach de 1532, se indaga el linaje cartesiano de los vértigos de incertidumbre que sufre Antoine Roquentin, el protagonista de La náusea satreana. Se aborda en estas páginas cierto síndrome consistente en la dificultad de discernimiento entre cuanto sucede fuera de la conciencia y cuanto no es más que representación mental, para sostener que es esta ambigüedad la condición de posibilidad de la conciencia moderna, la de una conciencia sostenida en su misma contingencia.
La imagen (como) différance. Problemas y aportes
Authors: Vignola Jacopo
Published: October 2019

El presente trabajo se desarrolla a partir de una reconstrucción de los análisis de Roberto Rubio acerca de las dificultades en que incurre la oposición entre enfoque fenomenológico y semiótico, a la hora de aportar posibles soluciones al debate actual en filosofía de la imagen. Después de haber confrontado las perspectivas husserliana y heideggeriana con la teoría derridiana de la escritura, la referencia al arte de Duane Michals permitirá acercar el problema-imagen hacia el pensamiento de la diferencia y del acontecer diferencial, terreno icónico en donde el juego inestable e indefinido de las oposiciones produce toda posibilidad de efecto semántico.
PZL-10 Turboshaft Engine–System Design Review
Authors: Czarnecki Michal , Olsen John , Ma Ruixian
Published: October 2019

The PZL – 10-turboshaft gas turbine engine is straight derivative of GTD-10 turboshaft design by OKMB (Omsk Engine Design Bureau). Prototype engine first run take place in 1968. Selected engine is interested platform to modify due gas generator layout 6A+R-2, which is modern. For example axial compressor design from successful Klimov designs TB2-117 (10A-2-2) or TB3-117 (12A-2-2) become obsolete in favour to TB7-117B (5A+R-2-2). In comparison to competitive engines: Klimov TB3-117 (1974 – Mi-14/17/24), General Electric T-700 (1970 – UH60/AH64), Turbomeca Makila (1976 – II225M) the PZL-10 engine design is limited by asymmetric power turbine design layout. This layout is common to early turboshaft design such as Soloview D-25V (Mil-6 power plant). Presented article review base engine configuration (6A+R+2+1). Proposed modifications are divided into different variants in terms of design complexity. Simplest variant is limited to increase turbine inlet temperature (TIT) by safe margin. Advanced configuration replace engine layout to 5A+R+2-2 and increase engine compressor pressure ratio to 9.4:1. Upgraded configuration after modification offers increase of generated power by 28% and SFC reduction by 9% – validated by gas turbine performance model. Design proposal corresponds to a major trend of increasing available power for helicopter engines – Mi-8T to Mi-8MT – 46%, H225M – Makila 1A to 1A2 — 9%), Makila 1A2 to Makila 2-25%.
Calculation Reliability of Natural Vibrations of Ship Hull and Superstructure
Authors: Van Doan Do , Murawski Lech
Published: October 2019

The ship hull vibration has a great impact on the performance, safety of the devices, structures, and the sailor's comfort when working on the ship. With increases in ship sizes and speeds, shipboard vibration becomes a significant concern in the design and construction of ships. Therefore, designing a ship without any excessive vibration is an important issue and should be studied through analysis right in the design phase. To ensure minimum vibration in a proposed new design; avoid damage to structures, machinery or equipment (mechanically suitable); meeting the requirements of the crew's living environment and working conditions. The ship's natural vibrations are determined to right from the design stage, which will help ship designers and structures avoid dangerous resonance areas. In this study, a three-dimensional finite element model representing the entire ship hull, including the deckhouse and machinery propulsion system, has been developed using numerical modelling implemented in Patran-Nastran software for local and global vibration analyses of the container ship 2000 TEU. Vibration analyses have been conducted under two conditions: free–free (dry) and in-water (wet). The wet analysis has been implemented using Mfluid elements in Nastran software. Because of the global ship free vibration analysis, global natural frequencies and mode shapes have been determined. Combined with the frequency of the main engine and the propeller, the resonant regions with higher frequencies are determined by the resonant graph of the hull. The application of the finite element method for ship vibration analysis shows the optimal of numerical modelling method compared to other traditional methods. This will help other technical problems to be solved with the support of the finite element method.
Thrust Control Systems of Propulsion and their Verification on Dynamically Positioned Vessels
Authors: Herdzik Jerzy
Published: October 2019

Thrust vector control systems of propulsion systems of dynamic positioning vessels are commonly applied on vessels with DP2 and DP3 class of DP. It was submitted the ways of providing information to dynamic positioning operator DPO about detecting of suspicion of failure in specific thruster and shown the ways of response in such situations. In the case of failure and shut down one of working thrusters, it must be done the possibility assessment of continuation of DP system safe operation. If such situation is not possible, it should be considered the work of DP system on limitations. It was indicated on safety threats during operation of DP systems resulting from system failure or even the design faults. It commonly applies the failure mode and effect analysis (FMEA or FMECA) from the design phase through sea trials until to the verification process during operation. It allows the elimination of majority of faults in the DP systems. It was communicated the basic conditions of safe operation of vessels with DP systems and the examples of conditions which releasing the readiness signal of DP propulsion system elements. Observed development of control and automatics systems will result in increasing the safety of DP systems operation.
Distribution of Masses and Presses on Axles and Wheels and Vehicles' Properties
Authors: Rybak Piotr , Wiśniewski Andrzej
Published: October 2019

One of the most important parameters affecting traction properties as well as driving safety, especially with regard to vehicles with special purpose, is the distribution of wheel and axle loads on the ground. This issue should be taken into account during the process of creating new vehicles as well as during the modernization process. In the first case, it is quite simple because the mass distribution is shaped already in the design phase. In the second case, the problem is more complex, because with modernization solutions we enter an already existing structure. Modernization basically assumes improving the performance and capabilities of the vehicle with possibly small changes in its base structure. Thus, it imposes important boundary conditions. The article presents the methodology of measurement and selected results of measurements of mass distribution as well as wheel and axle loads of selected motor vehicles during their advanced modernization (STAR 266 cars to the version STAR 266M2 and Honker 2000 to the version Honker M-AX). Modernizations carried out by Autobox Innovations Ltd. Lim. Par are mainly focused on increasing the traction of vehicles, traffic safety, and driving comfort. Measurements were made at the above-mentioned company.
Computational Simulation of Fully Trimmed Flight of a Helicopter in Hover
Authors: Stalewski Wieńczysław , Zalewski Wiesław , Surmacz Katarzyna , Pulfer Maximilian , Hirsch Frieder
Published: October 2019

In trimmed flight of a helicopter, all the forces and moments, aerodynamic, inertial, and gravitational, are in balance. Keeping the helicopter in trimmed state, needs a precise adjustment of flight controls. The methodology of simulation of a fully trimmed flight of rotorcraft has been developed and applied to simulate hover of a helicopter.

The presented approach is based on a solution of Unsteady Reynolds-Averaged Navier-Stokes (URANS) equations. In contrast to typical solutions of such problem, in the newly developed methodology, the flight controls corresponding to the trimmed-flight conditions are also determined based on the solution of URANS equations.

The methodology is based on coupling of several computational models of Computational Fluid Dynamics and Flight Dynamic. The URANS equations are solved in a three-dimensional region surrounding the flying helicopter, using the ANSYS FLUENT code. The approach is truly three-dimensional, with truly modelled geometry and kinematics of main and tail rotor blades. This applies to modelling of blade flapping and lead-lag motion, too.

The trimming procedure uses six independent parameters (i.e. collective and cyclic pitch of main rotor blades, collective pitch of tail rotor blades, pitch, and bank angles of a helicopter) that should be adjusted so as to balance all forces and moments acting on the helicopter.

The detailed description of the developed methodology as well as the results of simulation of trimmed hover of the helicopter was presented.
An Attempt to Reduce the Emission of Spark-Ignition Engine with Mixtures of Bioethanol and Gasoline as Substitute Fuels
Authors: Gis Wojciech , Gis Maciej , Wiśniowski Piotr , Bednarski Mateusz
Published: October 2019

Limiting emissions of harmful substances is a key task for vehicle manufacturers. Excessive emissions have a negative impact not only on the environment, but also on human life. A significant problem is the emission of nitrogen oxides as well as solid particles, in particular those up to a diameter of 2.5 microns. Carbon dioxide emissions are also a problem. Therefore, work is underway on the use of alternative fuels to power the vehicle engines. The importance of alternative fuels applies to spark ignition engines.

The authors of the article have done simulation tests of the Renault K4M 1.6 16v traction engine for emissions for fuels with a volumetric concentration of bioethanol from 10 to 85 percent. The analysis was carried out for mixtures as substitute fuels – without doing any structural changes in the engine's crankshafts. Emission of carbon monoxide, carbon dioxide, hydrocarbons, oxygen at full throttle for selected rotational speeds as well as selected engine performance parameters such as maximum power, torque, hourly and unit fuel consumption were determined.

On the basis of the simulation tests performed, the reasonableness of using the tested alternative fuels was determined on the example of the drive unit without affecting its constructions, in terms of e.g. issue. Maximum power, torque, and fuel consumption have also been examined and compared. Thus, the impact of alternative fuels will be determined not only in terms of emissions, but also in terms of impact on the parameters of the power unit.
Investigation of the Effect of Diamond Powder on the Thermal Properties of Octadecane Using Differential Scanning Calorimetry
Authors: Godlewski Wojciech , Sierakowski Mateusz , Domański Roman , Kapuściński Jakub , Wiśniewski Tomasz , Kubiś Michał
Published: October 2019

The purpose of this work was to examine the effect of diamond powder on the thermal properties of phase change materials on the example of octadecane. The experiment involved mixing of diamond powder with a specific granulation with the aforementioned representative of the alkanes group. Two different grain sizes were used: 50 and 250 micrometres. The change of specific heat, latent heat of phase change and degree of supercoiling in newly formed mixtures was compared to the pure forms of the phase-change materials used. Initial mixing with a glass-stirring rod showed strong stratification for each granulation due to the low viscosity of the mixture and too large differences between component densities. It was decided to add amorphous silicon dioxide to the mixtures, which increases density of the mixture. The optimal percentage of amorphous silicon dioxide was estimated experimentally. Measurements of thermal parameters were carried out using DSC technology. The results of the tests of specific heat and latent phase transition heat showed that with the increasing content of diamond, the specific heat of the mixture decreases almost twice, and the latent heat can decrease by up to three times. The effect of diamond powder on reducing the degree of supercoiling of the mixture was also observed. An important observation was that the mixture with higher granulation of diamond powder had greater tendency for sedimentation. This method could be used to increase thermal conductivity and diffusivity of phase change materials and make them viable for use in systems that require cooling at high rate or temperature stabilization, such as control systems in electronic vehicles or aviation industry and at the same time decrease the degree of supercoiling which could increase the efficiency of system.
Quasi-Homogenous Model of Electrochemical Machining of Turbine Engine Parts
Authors: Kozak Jerzy
Published: October 2019

In order to increase the efficiency of jet engines hard to machine nickel-based and titanium-based alloys are in common use for aero engine components such as blades and blade integrated disks (BLISK). Electrochemical Machining (ECM) provides an economical and effective method for machining high strength and heat-resistant materials into complex shapes with high material removal rate without tool wear and without inducing residual stress. This article presents the physical and mathematical models of electrochemical shaping used in the manufacture of turbine engine parts. The modelling is based on the assumption that the multi-phase mixture filling the gap is treated as two-phase quasi-homogenous medium. The model describes the workpiece shape evolution in time, distribution the local gap size, flow parameters such as the static pressure and the velocity, temperature and void fraction as result of gas generation. The major features of the numerical computer program are briefly described with a selected example of machining a typical turbine blade. The results of computer simulation of effects of setting parameters ECM on accuracy-machined profile are discussed. The improvement of accuracy has been reached by using described sequence of ECM and Pulse ECM processes.
Wind Tunnel Tests of the Tu-154M Aircraft Aerodynamic Characteristics
Authors: Krzysiak Andrzej
Published: October 2019

Determination of possible manoeuvres to be performed by the aircraft requires knowledge of its aerodynamic characteristics including, in particular, characteristics of the aircraft at configuration with deflected control surfaces. In this article, the wind tunnel tests results of the model of passenger Tu-154M aircraft manufactured at the scale 1:40 are presented. The model was designed and manufactured by the Military University of Technology based on the Tu-154M aircraft geometry obtained by full-scale object scanning. The model mapped all aircraft control surfaces, along with the gaps between these surfaces and the main wing part.

During the tests all the model’s control surface like, flaps, ailerons, spoilers, slots, rudder, elevator and tail plane were deflected at the same deflection angles range as they are used in the full scale aircraft. The aerodynamic characteristics of the tested Tu-154M aircraft model were measured by the 6-component internal balance. Based on the obtained measurements the aircraft model aerodynamic coefficients were calculated. In the article the basic aerodynamic characteristics of the tested Tu-154M aircraft model i.e. lift, drag coefficients as well as pitching, yawing and rolling moment coefficients versus model angles of attack and sideslip angles were presented.

The tests were performed in the Institute of Aviation low speed wind tunnels T-1 of the 1.5 m diameter test section at the undisturbed velocity, V∞ = 40 m/s.
Cooled Turbine Cantilevered Nozzle Mounting and Sealing System
Authors: Rzeszutek Leszek , Kaczmarek Grzegorz
Published: October 2019

Small advanced turboprop and turboshaft engines, with two-stage high-pressure turbine (HPT), need to meet several challenges. Described herein is an exemplary solution adopted for a cantilevered HPT nozzle mounting and sealing system that helped to meet requirements for size constraint and sealing of split lines and mounting features. Since clearances do not scale down with engine size due to manufacturing tolerances, there is a very limited space available between first and second stage rotors to secure HPT nozzle and to provide means of cooling air supply. Due to small diameters, cavities and size of the parts and assembly access becomes very difficult and precluded the use of typical solutions – like supply air spooilers – known from bigger engines. Relatively larger clearances require also efficient solution for sealing leakage, which was achieved by means of high-temperature braided “rope seals”. The nozzle segments have weight effective hook-type outer band mounting to HPT outer casing and are axially retained by HPT shroud with a snap ring. The hook cavities were used as pockets for rope seals that are subsequently compressed during assembly making it more difficult. However, by special design of the pockets and parts engagement sequence, the assembly process was optimized even though it is so called blind assembly. The sealing system function is not only reducing leakages that are detrimental to a turbine efficiency, but also allow for pressurizing the cavity between the nozzle outer band and HPT outer casing with cooling air thus preventing from hot gas ingestion by higher back-flow margin (BFM) resulting in higher durability of the turbine.
Helicopter Flight Simulation based on URANS Solver and Virtual Blade Model
Authors: Stalewski Wieńczysław , Surmacz Katarzyna
Published: October 2019

The methodology of simulation of a rotorcraft flight has been developed and applied to simulate several stages of flight of light helicopter. The methodology is based on coupling of several computational models of Computational Fluid Dynamics, Flight Dynamic. The essence of the methodology consists in calculation of aerodynamic forces acting on the flying rotorcraft by solving during the simulation the Unsteady Reynolds-Averaged Navier-Stokes (URANS) equations. In this approach, the rotorcraft is flying inside the computational 3D mesh modelling the space filled with the air. The flight simulation procedure is completely embedded in the URANS solver ANSYS FLUENT. Flow effects caused by rotating blades of main or tail rotor are modelled by application of the developed Virtual Blade Model (VBM). In this approach, real rotors are replaced by volume discs influencing the flow field similarly as rotating blades. Time-averaged aerodynamic effects of rotating blades are modelled using momentum source terms placed inside the volume-disc zones. The momentum sources are evaluated based on the Blade Element Theory, which associates local flow parameters in the blade sections with databases of 2D-aerodynamic characteristics of these sections. Apart of the VBM module, two additional UDF modules support the simulation of helicopter flight: the module responsible for modelling of all kinematic aspects of the flight and the module gathering the momentary aerodynamic loads and solves 6 DOF-Equations describing a motion of the helicopter seen as solid body. Exemplary simulation of helicopter flight, starting from a hover, through an acceleration and fast flight until a deceleration and steep descent, has been discussed.
HUBUNGAN POSTPARTUM BLUES DENGAN KEPUTUSAN MENGGUNAKAN KB PASCA NIFAS DI UPT PUSKESMAS LENTENG
Authors: Indriyani Ratna , Suprayitno Emdat
Published: October 2019

Ibu nifas di UPT Puskesmas Lenteng banyak yang tidak menggunakan kontrasepsi pascanifas dan mereka lebih memilih menggunakan metode kontrasepsi pada saat usia bayi sudah mulaiberumur 2 tahun. Pengalaman dan status psikologi ibu berkontribusi besar terhadap keputusan ibumemilih metode kontrasepsi pasca persalinan.Tujuan penelitian ini untuk menganalisa hubungan Post Partum Blues dengan KeputusanMenggunakan KB Pasca Nifas di UPT Puskesmas Lenteng. Jenis Penelitian ini yaitu analitikdengan rancangan Cross Sectional. Populasi yaitu semua ibu nifas multipara yang pernahmenggunakan KB nifas di UPT Puskesmas Lenteng pada bulan Juli-Agustus tahun 2017 sebanyak30 orang dengan total sampling. Pengumpulan data menggunakan lembar quesioner.Hasil Penelitian didapatkan Ibu nifas yang menggunakan KB pasca nifas sebagian besarmempunyai pengalaman negatif, Ibu nifas yang kemungkinan mengalami postpartum bluessebagian besar menggunakan KB pasca nifas. Ada hubungan postpartum blues dengan keputusanmenggunakan KB pasca nifas di UPT Puskesmas Lenteng tahun 2017 .
Sepse durante o período gestacional
Authors: De Matos Kamila Lima Abrantes , Morais Luma de Oliveira , Cavalcante Celia Carvalho , Nunes Ezio Junio Gonçalves , Pereira Talitha Zileno , Silva Lenilson Prates da , Potros Francine Ribeiro , Antunes Rabelo Karen Lorrane Maria , Maia Priscila Ribeiro , Ribeiro Fernanda Miranda
Published: October 2019

Objetivo: Realizar uma revisão de literatura sobre a ocorrência de sepse na gestação, considerando o desafio do diagnóstico e abordagem. Métodos: Foi realizada uma revisão de literatura consultando artigos científicos indexados nas bases eletrônicas LILACS e SCIELO. Resultados: A sepse é a terceira causa de morbimortalidade materna. A gestante tem diagnóstico dificultado devido às adaptações fisiológicas que ocorrem no estado gravídico que confundem-se com os critérios de sepse. As causas podem ser obstétricas ou não, sendo a infecção do trato urinário a principal. O diagnóstico precoce é imprescindível, podendo-se usar sinais clínicos que sugerem hipoperfusão, pois hipotensão e taquipnéia são esperados. A ausculta dos batimentos cardíacos fetais é relevante, pois taquicardia pode ser um sinal precoce de sepse. A prioridade do tratamento deve ser dada à gestante uma vez que o bem estar fetal depende da melhora dos parâmetros maternos. Considerações finais: As mortes maternas por sepse estão principalmente associadas a causas não obstétricas. Atrasos na identificação e no tratamento são importantes no prognóstico materno-fetal e passíveis de intervenção. É necessário alertar sobre as particularidades fisiológicas e critérios que podem ser usados para que haja reconhecimento precoce e melhor condução da sepse na gestação.
Hérnia de Bochdalek: Relato de Caso
Authors: Da Silva Fábio Ribeiro Azevedo , Pereira Fernanda Costa , Bugner Phillipe , Kaluf Isabela de Oliveira , Simieli Isabela , Daher Bruna Lima
Published: October 2019

Objetivo: Relatar um caso de hérnia de Bochdalek em adulto e discutir sua prevalência e manifestações clinicas. Relato de caso: Paciente masculino, 37 anos, deu entrada na emergência queixando-se de dor abdominal difusa e continua há cinco dias, associada a dispneia, náuseas, vômitos fecaloides, inapetência, parada de eliminação de flatos e fezes. O quadro era refratário ao uso de antieméticos e antiácidos. Nega história de traumas. Ao exame, abdômen distendido, ruídos hidroaéreos aumentados e doloroso à palpação. Realizada tomografia, com sinais sugestivos de abdômen agudo obstrutivo. Foi submetido a laparotomia exploradora de urgência e identificado saco herniário em região póstero-lateral esquerda do diafragma com estrangulamento de colón. Considerações finais: A hérnia de Bochdalek comumente manifesta-se em neonatos.  Em adultos, sua ocorrência é rara, predominando à direita e em mulheres.  Pode apresentar-se com sintomas gastrintestinais e respiratórios inespecíficos e quadro agudo de encarceramento ou perfuração. Há, portanto, a necessidade de raciocínio clínico para seu diagnóstico associado a técnicas de imagem.
Chemical Vapor Deposition of Metallic Films Using Plasma Electrons as Reducing Agents
Authors: Nadhom Hama , Lundin Daniel , Rouf Polla , Pedersen Henrik
Published: October 2019

Metallic thin films are key components in electronic devices and catalytic applications. Deposition of a conformal metallic thin film require using volatile precursor molecules in a chemical vapor deposition (CVD) process. The metal centers in such molecules typically have a positive valence, meaning that reduction of the metal centers is required on the film surface. Powerful molecular reducing agents for electropositive metals are scarce and hampers the exploration of CVD of electropositive metals. We present a new CVD method for depositing metallic films where free electrons in a plasma discharge are utilized to reduce the metal centers of chemisorbed precursor molecules. We demonstrate this method by depositing Fe, Co and Ni from their corresponding metallocenes using electrons from an argon plasma as a reducing agent.
Chemical Bonding Analysis in Ti1-x-yAlxTayN Solid Solutions
Authors: Eremeev Sergey , Shugurov A. R.
Published: October 2019

A comprehensive study of the evolution of electronic structure and chemical bonding in disordered Ti1-xAlxN and Ti1-x-y AlxTayN systems was performed by means of ab initio density functional theory calculations using crystal orbital Hamilton population technique.
Using Bayesian Model Selection to Advise Neutron Reflectometry Analysis from Langmuir-Blodgett Monolayers
Authors: McCluskey Andrew , Arnold Tom , Cooper Joshaniel F. K. , Snow Tim
Published: October 2019

The analysis of neutron and X-ray reflectometry data is important for the study of interfacial soft matter structures. However, there is still substantial discussion regarding the analytical models

that should be used to rationalise relflectometry data. In this work, we outline a robust and generic framework for the determination of the evidence for a particular model given experimental data, by

applying Bayesian logic. We apply this framework to the study of Langmuir-Blodgett monolayers by considering three possible analytical models from a recently published investigation [Campbell et al., J. Colloid Interface Sci, 2018, 531, 98]. From this, we can determine which model has the most evidence given the experimental data, and show the effect that different isotopic contrasts of neutron reflectometry will have on this. We believe that this general framework could become an important component of neutron and X-ray reflectometry data analysis, and hope others more regularly consider the relative evidence for their analytical models.
GPU-Accelerated Implementation of Continuous Constant pH Molecular Dynamics in Amber: pKa Predictions with Single-pH Simulations
Authors: Harris Robert C. , Shen Jana , Huang Yandong
Published: October 2019

This paper reports a GPU-accelerated implementation and testing data of the generalized Born based continuous constant pH molecular dynamics method in the Amber package.
On the Development of Teachers’ Competence in Local Open Universities under the Impact of MOOCs
Authors: Peng Xiaohua
Published: October 2019

With the rapid development of network technology and digital construction, the era of "Internet +" has come, and "MOOCs" has brought a new revolution to education circles. The Open University, which takes modern distance education as its basic education model, has put forward higher requirements for its teachers' competence. This paper analyzes the difficulties of teachers' competence under the impact of "Internet +" in order to improve the development of teachers' competence in local Open University.
MODULAR BAMBOO STRUCTURE DESIGN EXPLORATION WITH DEPLOYABLE CONSTRUCTION SYSTEM
Authors: Dwiana ; Anastasia Maurina Yosafat Bakti
Published: October 2019

Abstract- Deployable structure is a type of structure that can be transformed from a closed configuration to an open configuration. This structure can be assembled and disassembled with ease. This easy construction is a reason why deployable structure is the right structure for after disaster scenario. In emergency, natural resources are needed since it can be found and used easily. Bamboo is a common plant that can be found everywhere in Indonesia.  Research have been done by UNPAR’s architecture lecturer regarding deployable structure (deployable spatial and deployable planar) with bamboo as its material. It says that deployable spatial structure has easier and shorter time in instalation than deployable planar structure. Deployable spatial structure has tons of room for development. Some development that can be done is to make deployable structure module to be duplicated in every direction, and to implement self locking mechanism in this structure. This research is done to find deployable structure module that can be duplicated in every direction, and also implementing self locking mechanism in this structure Method that used in this research is qualitative by comparing some buildings that implementing deployable system (Resiploy and Triangle Prism) and modular system (Rising Canes and Y-BIO). The comparastion result is opportunity and thread from each building. This result which is opportunity and thread from each building then synthesized to find criteria for deployable structure that can be duplicated in every direction. Based on the research, it can be concluded that in deployable structure, nut and bolt is needed so that some building element can be rotated to create a movement. In modular building, we need a simple system that can be used in every joint so that building can be duplicated in every way with ease. Reciprocal structure is needed to make a building with self locking mechanism. By simplifying Resiploy’s joint and using Rising Canes’s modules, we can make a deployable structure that can be duplicated in every way with self locking mechanism  Key Words: bamboo structure, deployable, modular, self locking mechanism
Filosofia-scienza e religione, i nuovi percorsi tracciati da Hans Jonas
Authors: Michelis Angela
Published: October 2019

Il pensiero di Jonas, in particolare quello della sua seconda fase, dedicato alla filosofia della biologia, apre nel confronto filosofico con la scienza nuovi spazi di riflessione critica per la filosofia e per le scienze stesse. In tale incontro entrambe si arricchiscono, acquisendo maggior coscienza metodologica e ampliando le prospettive di osservazione dei fenomeni. Sorge, così, in modo rinnovato, la possibilità di nuove soluzioni interpretative, che, ponendosi al di là di desueti schieramenti ideologici, riescano a comprendere più in profondità la complessità della realtà epocale a cui ci troviamo di fronte e dunque aumentino la capacità  di governarla.
Alasdair MacIntyre e o tomismo: notas sobre Three Rival Versions of Moral Inquiry/Alasdair MacIntyre and Thomism: notes on Three Rival Versions of Moral Inquiry
Authors: Sousa José Elielton
Published: October 2019

O texto tematiza o tomismo em Alasdair MacIntyre, especialmente em Three Rival Versions of Moral Inquiry, mostrando como MacIntyre se apropria metodologicamente de ferramentas conceituais oriundas do tomismo para resolver os problemas que afligem a teoria e a prática moral contemporânea. Trata-se, portanto, de uma leitura hermenêutica do modo como MacIntyre se apropria do tomismo nessa obra específica, mas sem esgotar os elementos que compõem tal apropriação. Abstract: The paper thematizes the presence of thomism in Alasdair MacIntyre, especially in his book Three Rival Versions of Moral Inquiry, by showing how MacIntyre appropriates methodologically conceptual tools coming from Thomism in to solve the problems that afflict the contemporary moral theory and practice. It is, therefore, a hermeneutic reading of how MacIntyre appropriates Thomism that particular work, but without exhausting the elements of such appropriation. Keywords: Tradition. Methodological Thomism. Hermeneutics.
Animale, "transanimale" e umano nel pensiero di Hans Jonas
Authors: Tibaldeo Roberto Franzini
Published: October 2019

Il pensiero di Hans Jonas, specie per quel che riguarda la cosiddetta “biologia filosofica”, tratta indirettamente del rapporto tra essere umano e animale. A questo riguardo, Jonas rifiuta sia l’approccio dualistico, sia quello monistico-riduzionistico e propende al contrario per una complessiva reinterpretazione del fenomeno della vita nei termini di quel che egli definisce una “rivoluzione ontologica”. In virtù di ciò, il pensatore rintraccia lo specifico del fenomeno della vita e individua nelle forme viventi una scala naturae di complessità, auto-trascendimento e libertà via via crescenti, le cui tappe significative sono la vita organica, quella animale e quella umana. Per quel che concerne la forma animale, varie specie presentano “potenzialità trans-animali”, che evidenziano un ponte biologico e ontologico verso l’essere umano. In altre parole, l’animale è in qualche modo in grado di prefigurare la forma di vita specificamente umana. Tuttavia, sostiene Jonas, non appena quest’ultima fa la propria comparsa, essa è tale per cui se ne evidenzia al tempo stesso anche lo “iato metafisico” rispetto alla vita animale. La specificità umana si manifesta nella propria capacità di essere responsabile e di preservare le condizioni basilari per una vita autentica sul pianeta.
Sobre a educação do filósofo-rei e o argumento central da República de Platão/On the education of the philosopher-king and the central argumentoOf Plato’s Republic
Authors: Paula Henrique Gonçalves de
Published: October 2019

Neste artigo pretendemos demonstrar como o argumento central da República de Platão que institui o filósofo como o indivíduo virtuoso por excelência e chefe político da cidade justa pode ser lido de modo a evitar a crítica de recentes estudiosos da obra que pretendem que a caracterização geral da educação filosófica descrita no plano pedagógico da República é incapaz de fornecer ao filósofo o elemento indispensável ao seu alto posto moral e político: a sabedoria prática para dirigir sua vida moral íntima e governar a cidade justa. Tal questão será resolvida dentro da problemática em que se insere através de uma correta interpretação sobre o que significa o conhecimento da Forma do Bem à filosofia platônica bem como de uma correta compreensão da concepção de educação que norteia Platão em sua obra.Abstract: In this paper we try to show how to read the main argument of Plato’s Republic, that  proclaims the philosopher as the truly virtuous person and political chief of the just city,  in order to  avoid the criticism of recent scholars who declare that the general characterization of the philosophical education described in the pedagogical scheme of the Republic is unable  to provide the philosopher with the essential element of his high moral and political status: the practical wisdom to guide his own  moral life and govern the just city. This question will be clarified along with all the issues involved in the correct interpretation of the meaning of the knowledge of the Form of Good in the platonic philosophy and a correct understanding of Plato’s general conception of education. Keywords: Plato. Republic. Education. Form of the Good. Philosopher-King.
PRESERVATION OF AUTHOR’S STYLE DURING EDITING OF LITERARY TRANSLATION (THE CASE OF COMPARATIVE CHARACTERISTICS OF THREE EDITIONS OF TRANSLATION OF THE FAIRY TALE BY ANTOINE DE SAINT-EXUPERY “THE LITTLE PRINCE”)
Authors: Onyshchenko Oksana
Published: October 2019

In the article the lexical coloristics of the Ukrainian translated editions of the fairy tale by Antoine de Saint-Exupery “Little Prince” is studied and analyzed. For the study the editions in translations of Leonid Kononovich, Anatoii Zhalovskiy, Anatoliy Perepad were selected.