bluuebunny/crossref_metadata_2025_split huggingface dataset:
Adaptive Neural Dynamic Surface Control for the Chaotic PMSM System with External Disturbances and Constrained Output
Authors: Junxing Zhang , Shilong Wang , Shaobo Li , Peng Zhou 
Published: January 2020

Background:This article studies the issue of adaptive neural dynamic surface control for the chaotic permanent magnet synchronous motor system with constrained output, external disturbances and parameter perturbations.Methods:Firstly, a virtual controller and two practical controllers are created based on the backstepping framework. In the process of creating controllers, adaptive technique and radial basis function neural networks are used to handle unknown parameters and nonlinearities, respectively. The nonlinear damping items are applied to overcome external disturbances. The barrier Lyapunov function is used to prevent the violation of system output constraint. Meanwhile, the first-order filter to eliminate the “explosion of complexity” of traditional back stepping has been introduced. Then, it is proved that all the closed-loop signals are uniform ultimate asymptotic stability and the tracking error converges to a small set of origin.Results:The effectiveness and robustness of the developed approach are illustrated by numerical simulations.Conclusion:The raised control scheme is a useful tool for enhancing the performance of the chaotic PMSM system with external disturbances, constrained output and parameter perturbations.
Conflictos bioéticos en el paciente con problemas de salud mental
Authors: Cornejo Fernando , Mejía Daniel 
Published: January 2020

La presente comunicación breve, pretende abrir el debate en nuestro medio, sobre los principios bioéticos en los pacientes con problemas graves de salud mental que no están en capacidad de discernimiento de sus decisiones.
A partir de un caso clínico y su evolución iremos analizando los alcances médicos y bioéticos, y su implicancia en el ejercicio clínico por parte de quienes trabajan en los equipos de salud mental.
Trataremos de dar un par de conclusiones que permitan tratar el tema, en una sociedad en la que la salud mental, es aún un tabú
Influence of wave effect on fiber stress limit under tensile tests of composite material
Authors: Antypas I. R. , Karnoub Amer , Dyachenkо A. G. 
Published: January 2020

Introduction. The response of composite materials to the impact of a certain kind of load is difficult to predict, therefore, research in this area has often been neglected. The work objective was to study the influence of the wave effect on the tensile strength of polymer composites of a fibrous structure.Materials and Methods. In the tests, samples of multilayer materials of various thicknesses with continuous, long and short fibers that form a fabric, as well as a layered structure, were used. The number of layers corresponds to the resistance to the applied loads. Fibers of glass, carbon, kevlar, or their combinations were used. Isotropic materials – epoxide, polyester and vinyl ether – were used as binders.Research Results. The tensile test results of homogeneous samples and samples of fibrous structure are obtained. In this case, the values of fiber angle varied. The stability of their intercomparison test results is established. The dependence of the maximum tensile stresses σmax, MPa, (on the vertical axis) on the fiber angle θmax is obtained. These stresses for a fibreless material amounted to 250 MPa. Normal and tangential stresses acting perpendicular to the fibers, as well as shear stresses of the layered material, are calculated. As follows from the analysis of the dependences for the significant tensile stresses and from the study on refraction in the section of the sample damage, it was established that the shear stress τ???????????????? was the cause of the fracture. Using an equation providing the compensation for the angle of inclination θ = 45, it was determined that the shear stress of the polyester is τху = 35 MPa. This was the stress that caused subsequently the destruction of the samples.Discussion and Conclusions. The tensile stresses of the composite material decrease with increasing the fiber angle in certain areas. The destruction of all fiber samples occurred when the shear stress reached a value approximately equal to the shear stress at which the destruction of samples made only from a binder material happened. When the specimen broke, the fracture mode had the form similar to the shear failure; besides, at the moment of fracture, the object having a rectangular shape, being deformed at an angle, took the form of a parallelogram.
Ensuring of the industrial robot link motion accuracy parameters in the low-speed zone
Authors: Karnaukhov N. F. , Smyatsky D. A. , Filimonov M. N. , Rudnev K. I. 
Published: January 2020

Introduction. The article is devoted to the search for a method of reducing the effect of friction links mobility industrial robot PR (production mechanism PM) with frequency-controlled electric drive (FCED) on the static error (accuracy) positioning of the working body (WB) when moving in a low speed zone. The random character of friction forces changes in the implementation process start-braking modes of induction motor (IM) operation create difficulties in performance specified technological process parameters. The formation of pulsating moments on the IM shaft, due to the stator IM current harmonics, combined with the friction torque of the moving parts in the IR (IM) guide, accompanied by a deterioration of the WB (IM output link) movement dynamics.Materials and Methods. To correction the motion of the WB (PM output link) in the IM start-brake modes, the authors proposed to use dual-mode control of the Autonomous voltage inverter (AVI), providing software control of the IM stator current harmonics amplitudes and the corresponding regulation of the pulsating moments on the IM shaft by introducing a multiple "m — submodulation" of the AVI carrier frequency (CF). Results. The simplified representation of the FCED block diagram with local and global negative feedbacks (GNF) allowed to reveal the features of specific parameters influence on the static error δ and the FCED dynamic stability with the limiting gain of the corrective amplifier K1. Discussion and Conclusions. The introduction of rotor "microvibration", allows the IM "conditionally reduce" the moving link friction force in the guides, reduce the drive power to overcome the friction forces. The use of dual-mode control AVI expands the scope of use of scalar control in process equipment, multi-link mechanisms of automated production, operating in the zone of "low and creeping speeds".
Problems of weld overlay of seating surfaces of pipe fitting and solutions
Authors: Poloskov S. S. 
Published: January 2020

Introduction. A problem of providing the necessary functions of pipe fitting for blockage, control, distribution of the working medium flows under the most adverse operating conditions of oil and gas pipelines associated with abrasive particles, mechanical impurities, hydrogen sulfide, carbon dioxide and organic acids with sulfate-reducing bacteria, is considered.Materials and Methods. High performance properties of seating surfaces of pipe fittings are provided through anticorrosive plating of alloyed and high-alloyed metals based on iron with the addition of chromium, nickel, cobalt and niobium. The basic weld overlay methods are analyzed: metalarc welding, nonconsumable and consumable-electrode weld facing in shielding gases, submerged arc surfacing. Advantages and disadvantages of surfacing methods implemented in recent years are noted: laser, plasma-powder and plasma-arc methods.Research Results. Taking into account the automation capabilities, a high-tech process of robotic anticorrosive surfacing using a consumable electrode with an additional filler metal feed to the front welding puddle for shielding the thermal effect of the arc, is proposed. Industrial application of the proposed technology requires a set of studies related to assessing the effect of technological parameters on the quality of the deposited layers to provide the required operational characteristics of the fitting.Discussion and Conclusion. It is proposed to carry out the above studies using physical and mathematical modeling of the anticorrosive surfacing, which reduces the time and number of experiments. Therefore, the primary task is to develop a mathematical model of the surfacing process with a consumable electrode with an additional filler wire and transverse vibrations of the welding burner. Such a model should virtually reproduce the surfacing process, as well as its thermal cycle followed by calculating the ratio of the structural components of the deposited metal and the substrate metal. The system of equations of the model should be solved by a special computer program. The algorithm presented for solving this class of problems will allow us to make a sound connection of the technological parameters of the surfacing process and the quality parameters of the formation of the deposited layers, to determine the program for their optimization to provide the required operational properties of pipeline fitting.
Increasing stable operation of the working body in crank presses
Authors: Kobzev K. O. 
Published: January 2020

Introduction. Static and dynamic loading systems of the safety friction clutch (SFC) are investigated. A schematic diagram of the frictional contact of solids in the forging and stamping machines is synthesized. From the point of view of increasing the operational stability of the working body in crank presses, the following factors are considered: response time, current friction factor and a change in torque under static and dynamic loading of the safety clutch.Materials and Methods. The response time of the SFC with differentiated friction pairs is determined. The sought indicator corresponds to the period of the uptime in which the load is amplified (between values of the rated torque and the response time). The parameters of a dual-mass system correspond to the parameters of an equivalent system that includes a clutch and key parts of the drive. The system elements include mass of inertia; mass of inertia including the engine rotor and the main (driving) part of the SFC; elastic connection with the specified value of the reduced angular stiffness. Research Results. Values of the load arising in elastic bonds not conditioned by the working body operation are specified. Formulas that should be used to determine the values of the driving moment and generalized coordinates are presented. Start conditions with an increase in the load value from the initial indicators are described. Discussion and Conclusions. The dependence is found for calculating the minimum number of friction pairs of the basic friction group. It is shown that at this minimum, the gain used to implement an “ideal” SFC load characteristic, does not exceed the maximum permissible value, even if the value of the friction coefficient is maximum. A fundamental SFC model is presented, in which, with a minimum value of the friction coefficient, negative feedback does not work. In the functional diagram of the basic SFC version modernization, there is no negative feedback with a minimum value of the friction coefficient in order to increase the accuracy of operation and the rated load capacity.
PENGARUH DEMOGRAFIS TERHADAP TINGKAT PREFERENSI, KEPUASAN DAN PERSEPSI RISIKO MASYARAKAT PADA PRODUK HIJAU DI SEKTOR OBAT TRADISIONAL
Authors: Zulfikar Rizka , Mayvita Prihatini Ade , Purboyo Purboyo 
Published: January 2020

Penelitian ini bertujuan untuk mengkaji model hubungan demografis, tingkat preferensi, kepuasan dan persepsi risiko masyarakat produk obat tradisional yang nantinya dapat digunakan oleh para pengembang produk obat tradisional untuk menyusun kebijakan pemasaran. Penelitian ini dilaksanakan di kota Banjarmasin dengan waktu penelitian mulai dari bulan Oktober 2018 sampai dengan Maret 2019. Populasi target dalam penelitian ini adalah masyarakat kota Banjarmasin sebanyak 150 responden. Pengambilan sampel menggunakan metode purposive sampling. Pengumpulan data menggunakan kuesioner dan dianalisa dengan SEM (Structural Equation Model) . Hasil penelitian menemukan bahwa: (1) Model structural equation model yang didapat dari penelitian telah memenuhi standar goodness of fit index dan dapat menjelaskan hubungan seluruh variabel yang diteliti, (2) Variabel demografis berpengaruh signfikan terhadap variabel kepuasan dan persepsi risiko namun tidak memiliki pengaruh secara signifikan terhadap tingkat preferensi (5) Variabel demografis memiliki korelasi dengan variabel kepuasan (positif – sedang), dengan variabel preferensi (positif-lemah) dan dengan variabel persepsi risiko (negatif-lemah).
A Comparative Study of Kalidasa’s Abhijnana Shakuntalam and Namita Gokhale’s Shakuntala: The Play of Memory
Authors: Solanki Pankaj 
Published: January 2020

Shakuntala is one of the most acclaimed women characters of Indian Literature. For the first time Shakuntala’s character originated in The Mahabharata. Since then she has been represented in various texts in various languages of India. The present paper is an attempt to analyze the representation of Shakuntala by the authors from ancient times to the present. For this purpose ancient work Abhijnana Shakuntalam by Kalidasa and the modern work Shakuntala: The Play of Memory by Namita Gokhale are studied.
In Kalidasa’s Abhijnana Shakuntalam Shakuntala is the real daughter of Sage Vishvamitra and nymph Menka. However, she is adopted and brought up by Sage Kanva and his wife Gautmi. She is a rustic girl, brought up in a hermitage. With the progress of the play, she is married to King Dushyanta who forgets her because of a curse. Later, she was adopted by sage Kashyapa and his wife Aditi. She gives birth to a brave child Bharat and finally reunites with her husband.
Shakuntala: The Play of Memory by Namita Gokhale was Published in 2005 and it is a challenging work of Indian English fiction. Like the remakes of films there may be re-invention and re-interpretation of old myths embodied in literary works. In her masterpiece Shakuntala, Namita Gokhale has portrayed the story of a woman named after the heroine of Kalidasa’s classic drama Abhijnana Shakuntalam. In contrast to her legendary namesake, she is bold, spirited and imaginative. Right from her childhood she is conscious of the discrimination towards female. In her marriage with a mahasamant, Srijan, she feels suffocated by social customs. Hungry for experience she deserts home to travel with a Greek horse merchant, Nearchus. Together they travel far and wide and surrender to unbridled pleasures. Shakuntala assumes the identity of Yaduri: the ‘fallen woman.’ But she forsakes this life as well to meet her salvation in her death at Kashi.
Türkiye’de Son Yıllarda Gübrede Uygulanan Politikalara Genel Bir Bakış
Authors: BİLGE Bilal , ARTUKOĞLU Metin 
Published: January 2020

Bu
çalışmanın temel amacı, Türkiye’de son
on yılda gübrede uygulanan politikaların değerlendirilmesidir. Gübrede
istikrarlı ve sürekliliği olan politikaların olmadığı, daha çok günlük
kararlarla yürütülen uygulamaların ağırlıklı olduğu görülmektedir. Türkiye, gerek gübre ithalatında gerekse
gübre hammaddesi açısından büyük ölçüde dışa bağımlı bir ülke konumunda olup,
yapılan değerlendirmelerde Türkiye’de en yaygın ekim alanına sahip Pamuk,
Buğday ve Mısır’da fiyat artışlarının bu ürünlerin önemli girdisi olan gübrenin
çok gerisinde kaldığı görülmektedir. Gübre
fiyatı ile ürün fiyatları arasındaki paritenin ürün fiyatları lehine olması
yanında, sağlıklı gübre kullanımı için toprak kaynağı ile ilgili verilerin de
çok iyi biliniyor olması gerekli olup, kapsamlı bir toprak envanteri
çıkartılarak CBS ortamında uygun görülen gübre çeşidi ve miktarıyla interaktif
kullanıma açık bir şekilde işlenmesi, gübre ile ilgili ithalat, ihracat, üretim
ve gübre imalatında kullanılan ana ve ara malların verilerinin de çok sıkı bir
şekilde izlenmesi ve kayıt altına alınması gerekmektedir. Bu sayede ihtiyaç
duyulan gübre ve kullanılan gübre hızlı bir şekilde değerlendirilebilecektir.
Bazı Ülkelerde ve Türkiye’de Bankaların Tarımsal Kredi Uygulamalarının Analizi
Authors: TOPUZOĞLU İpek , ARTUKOĞLU Metin 
Published: January 2020

Bu
araştırmada seçilmiş ülkeler ve Türkiye’de tarımsal kredi piyasasının genel
durumu, bankaların tarımsal kredi uygulamaları karşılaştırılmaya çalışılmıştır.
Seçili ülkelerde tarımsal finansman alt
yapısı, teminat şartları, kredi değerlendirmelerde sadece raiting / skoring
sorguları üzerinden yapılmakta olduğu, bankacılıkta ciddi kayıt alt yapısı ile
Türkiye’den ayrıldığı görülmekte olup, bu sistemin birçok yönü ile Türkiye için
ciddi olarak ele alınması gerektiği düşünülmektedir.
MEWASPADAI VIRUS LGBT PADA PENDIDIKAN ANAK
Authors: Rahmah Hikmatur 
Published: January 2020

LGBT (Lesbian, Gay, Bisexual and Transgender) is a frightening epidemic of society, especially in Indonesia. The epidemic also infects most children and adolescents. So as educators, both parents and teachers should pay particular attention to the symptoms that cause virus LGBT in the community, especially in children's education. Because it is against the nature, norms, customs, religion and morals of humanity. Moreover, LGBT's behavior is not a disease transmitted through genes or disorders, but more to the consequences mistakes and erros of children’s education.
mercado de chocolate no sul da Bahia
Authors: Dantas Paulo César Cruz , Pires Mônica De Moura , Uetanabaro Ana Paula Trovatti , Gomes Andrea da Silva , Novaes Ana Carolina Pereira 
Published: January 2020

Apesar de ser um dos principais produtores de amêndoa de cacau no mundo durante o século XX, a incidência de crises na lavoura e maior concorrência mundial no final desse mesmo século tornaram a atividade cacaueira no Sul da Bahia pouco rentável. Nesse sentido, em meados dos anos 2000, produtores procuraram agregar valor à amêndoa e tornar a atividade menos sensível a crises internacionais, por meio da produção de chocolate com alto teor de cacau. Diante disso, este trabalho analisa a estrutura do mercado de chocolate no Sul da Bahia, identificando a quantidade de marcas, estratégias produtivas, comerciais e de marketing. O levantamento de dados foi feito em plataformas online e visitas técnicas, entre agosto de 2017 e julho de 2018, e submetidos à análise qualitativa e análise de correlação. Nesse período foram identificadas 50 marcas, concentradas nos municípios de Ilhéus, Itacaré e Salvador. A produção é majoritariamente Bean to Bar ou Tree to Bar com alto teor de cacau, explorando nichos de mercado orgânico, vegano e biodinâmico. A produção é, principalmente, de chocolate 56,6%, 70% e 80%, cujos maiores mercados destino são: Bahia, São Paulo e Rio de Janeiro. Há dificuldade na comercialização, pois esta costuma ser feita por meio de terceiros. O mercado caracteriza-se por uma estrutura de concorrência monopolista e muito dinâmica, em que surgem novas marcas com muita rapidez no mercado, pois em setembro de 2019 já se contabilizavam 74 marcas, um aumento de 48% no período de 14 meses.
Palavras-chave: Cacau. Brasil. Chocolate. Produção.
O estado de exceção na história a contrapelo
Authors: Novais Melissa Mendes de 
Published: January 2020

Este artigo procura delinear o paradigma do estado de exceção no pensamento de Giorgio Agamben, estabelecendo as devidas diferenciações em relação a forma como esse conceito é utilizado no debate público atual a fim que de que o paradigma agambeniano seja reconhecido em sua radicalidade. Para Agamben, o estado de exceção não diz respeito a uma categoria histórica identificável e nem se confunde com modelos estáticos ou legalmente prescritos, tais como a ditadura, o estado de defesa ou estado de sítio. Trata-se de uma criatura da tradição democrático-constitucional que se diferencia tanto da estrita facticidade, quanto da juridicidade ou da lacuna. O que afinal é o estado de exceção agambeniano? É força de lei sem lei como vigência sem significado da lei, anulando a diferenciação entre Estado de Direito e estado de exceção.
Palavras-chave: Estado de exceção. Agamben. Estado de Direito.
Developing immigrant integration policy in the Irish public sector: An international human rights and public sector duty approach
Authors: Murphy Clíodhna , Caulfield Leanne , Gilmartin Mary 
Published: January 2020

Abstract
This paper outlines a new approach to the development of immigrant integration policy in Ireland that is informed by an international human rights and public sector duty perspective. Based on a comprehensive review, the paper outlines the current state of immigrant integration policies in the Irish public sector, highlighting the limited awareness of this issue among public bodies. It also provides practical guidance for public bodies wishing to develop more effective immigrant integration policies, drawing from international human rights treaties and from examples of policy development in Ireland. Given the reality that Ireland is now a well-established immigrant-receiving country, the paper concludes that Ireland urgently needs a coherent and comprehensive approach to the development of immigrant integration policy. A human-rights-based approach offers such a method and would allow Ireland, through its public sector, to become a leader in immigrant integration policy development. This approach requires the elaboration of specific integration policies in order to ensure that migrant populations can practically access fundamental human rights such as housing, education, healthcare and employment.
A Spectral Method of the Analysis of Linear Control Systems
Authors: Kurdyukov Alexander P. , Boichenko Victor A. 
Published: January 2020

Abstract
A spectral method of the analysis of linear control systems is considered. Within the framework of this approach the σ-entropy of input signals and the σ-entropy norm of systems are introduced. The invariance of the introduced norm makes it possible to get invariant results of σ-entropy analysis.
A Trajectory Planning Based Controller to Regulate an Uncertain 3D Overhead Crane System
Authors: Aguilar-Ibanez Carlos , Suarez-Castanon Miguel S. 
Published: January 2020

Abstract
We introduce a control strategy to solve the regulation control problem, from the perspective of trajectory planning, for an uncertain 3D overhead crane. The proposed solution was developed based on an adaptive control approach that takes advantage of the passivity properties found in this kind of systems. We use a trajectory planning approach to preserve the accelerations and velocities inside of realistic ranges, to maintaining the payload movements as close as possible to the origin. To this end, we carefully chose a suitable S-curve based on the Bezier spline, which allows us to efficiently handle the load translation problem, considerably reducing the load oscillations. To perform the convergence analysis, we applied the traditional Lyapunov theory, together with Barbalat’s lemma. We assess the effectiveness of our control strategy with convincing numerical simulations.