bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation of the Effect of Slag Trap Design on Slag Delay Efficiency in the SolidWorks Flow Simulation Parametric Modeling Environment
Authors:   Central Ukrainian National Technical University, Kononchuk Serhii , Skrypnyk Oleksandr ,   Central Ukrainian National Technical University, Sviatskyi Volodymyr ,   Central Ukrainian National Technical University, Pukalov Viktor ,   Central Ukrainian National Technical University
Published: January 2021

The most common technology for the manufacture of metal parts and work pieces is casting. High-tech branches of mechanical engineering require the production of high-quality castings of complex configuration from modern alloys with a given chemical composition and mechanical properties. The analysis of the causes of slag inclusions and ways to prevent them showed that in addition to technological means related to quality preparation of metal before pouring, a significant role is played by quiet continuous pouring of metal and properly designed foundry system, including slag trap. However, the use of the most common foundry systems (braking, throttle, with centrifugal slag traps, rain, siphon) to increase the efficiency of slag retention is associated with increased metal consumption, and as a consequence, leads to an increase in the cost of casting. Conducting experimental research by varying the design of the slag trap leads to an increase in the number of field experiments, given their complexity, limited by great difficulties. On the other hand, computer flow modeling allows to study the influence of slag trap design on the flow rate of the melt at the design stage and significantly reduce the cost of introduction of new castings. In order to reliably capture slag and reduce the speed of movement of the melt in the foundries, which provides a smooth filling of the form with an alloy, but without additional costs of metal, the original design of the ribbed slag catcher is proposed. The results of parametric modeling of the melt flow in the channel of the ribbed slag trap showed a decrease in the flow rate along the cross-sectional height of the slag trap compared to traditional by 0.028 m / s or 14.5%. This allowed to reduce the length of the slag trap to the first feeder. The expected metal savings are 0.26%. The form made using a 3D model of the slag trap showed satisfactory molding ability. But the obtained research results are of a recommendatory nature and require practical verification in the production environment. In addition, by varying parameters such as the height of the ribs, the distance between them, the angle of inclination, we can obtain similar results for different castings of different alloys. Given all this, there is a need for further study of the impact of the design of the slag trap on the efficiency of slag retention.
Adaptive Mobile Network With Amorphous Topology Node Controller Architecture
Authors:   Central Ukrainian National Technical University, Smirnov Volodymyr , Smirnova Natalia ,   Central Ukrainian National Technical University
Published: January 2021

The purpose of the article is to develop an adaptive mobile network node architecture with an amorphous topology. The article describes the host controller architecture. The concept of a mobile network is described. The mobile network is adaptive, self-organizing, and able to operate autonomously. The presented mobile network node controller architecture is the object swarm control system basis. A stack of mobile network protocols is presented, consisting of a control protocol, a data exchange protocol and a configuration protocol. The nodes of the network controllers interaction is carried out using several transceivers. The use of multiple transceivers made it possible to distribute data traffic, configuration traffic, and management traffic over different channels, which made it possible to carry out information exchange at the same time. The protocol stack is minimized. The functionality of the host and the network object (swarm) is completely separated. The topology of the mobile network is not deterministic, amorphous and changes when the network objects move in space. In this case, some connections are lost and others arise. The routing tables are constantly updated. The network in accordance with the laid down algorithm, is able to build the necessary topology and organize the necessary connections in order to complete the task with a swarm of objects. The network is capable of building packet retransmission chains for remote network objects. Thus, the implementation of a mobile network at its low cost allows solving a certain range of problems. The performer can be either a separate object associated with the operator through a swarm of repeaters, or a swarm of objects. In order to increase the efficiency of the formation of routing tables and minimize the cluster structures in a mobile network, it is advisable to use optimization algorithms based on set theory. The mobile network is designed to control a swarm of objects, which can be UAVs, robotic objects and control systems for various technological processes.
Classification of Partially Regular Microreliefs Formed on the End Surfaces of Rotary Bodies
Authors:   Ternopil Ivan Puluj National Technical University, Dzyura Volodymyr
Published: January 2021

The aim of the article is to classify partially regular microreliefs that are formed on the end surfaces of rotating bodies. The article analyzes the known classifications of regular microreliefs in scientific publications and regulations. The parameters by which regular microreliefs are classified and their characteristics are analyzed. The lack of information on the classification of partially regular microreliefs formed on the end surfaces of rotating bodies as a new class of microreliefs has been established. The proposed classification reveals a set of options for the implementation of partially regular microreliefs formed on the end surfaces of bodies of rotation and their characteristics. For the first time the classification of partially regular microreliefs that are formed on the end surfaces of rotating bodies is offered, carried out on the basis of features of kinematics of technological process. It c can be a basis for creation of their mathematical models and definition of the relative area of vibro-rolling. Signs of classification are proposed to take: methods of forming a partially regular microrelief; the shape of the centerline of continuous regular micro-irregularities; mutual arrangement of adjacent grooves; mutual placement of axial lines of continuous regular micro-inequalities; groove shapes. Each of these features is divided into certain sub-features, which consist of the corresponding characteristics, which are expressed by the elements of the mode of vibration rolling, the dimensional parameters of the elements of the grooves, their mutual placement. For the first time, analytical dependences were obtained to determine the parameter of partially regular microreliefs classification formed on the end surfaces of rotating bodies by the nature of the change in the radii of the axial lines and their axial steps.
Dynamic Design of Optimal Stochastic Stabilization System of Cutting Power on a Band Saw Machine
Authors:   Central Ukrainian National Technical University, Bereziuk Iryna , Holyk Olena ,   Central Ukrainian National Technical University, Soldatenko Valentyn ,   Central Ukrainian National Technical University
Published: January 2021

The article is devoted to the development of methodological foundations for constructing an optimal system of stochastic stabilization of cutting power based on the results of structural identification of models of the dynamics of the system '' woodworking machine-cutting process '' and uncontrolled disturbance. In order to solve the problem of structural identification of the '' woodworking machine-cutting process ' system and the disturbance acting in the process of wood-cutting, the article proposes a special technology, the use of which made it possible to determine the transfer function of the '' woodworking machine-cutting process '' and estimate the spectral density of the disturbance acting during the processing. It has been established that when the physical and mechanical properties of wood and the state of the cutting tool change, the structure of the transfer function and spectral density does not change, but only the parameters change.As a result of solving the synthesis problem, the structure and parameters of the optimal controller are determined, which ensures the specified quality of the processed surface with minimal energy consumption. To assess the quality of control, it is proposed to use a quadratic criterion, which is the sum of two weighted variances of the stator current deviation of the main motion motor (characterizes energy costs) and the variance of the feed drive speed control signal.Studies of the robust stability of the optimal system with the obtained controller under the influence of unstructured disturbances made it possible to determine the class and estimate the maximum norms of unstructured disturbances at which the system maintains stability and a given control quality. The use of the proposed approach to the construction of an optimal system of stochastic stabilization of cutting power makes it possible to achieve a reduction in energy costs by 12% for a given quality of the processed surface by increasing the stabilization accuracy by two orders of magnitude.
Surface Subsidence Ground During Tunnel Construction
Authors:   Odessa State Academy of Civil Engineering and Architecture, Karpiuk Іryna , Karpiuk Vasyl ,   Odessa State Academy of Civil Engineering and Architecture
Published: January 2021

The cross-sectional area of the tunnel, fortified with a rim, is always smaller than the excavation area in the ground. Exact methods are still very arbitrary and need to be improved. The article presents the results of calculating the internal force factors of a monolithic reinforced concrete frame of a vaulted tunnel. The data obtained in the calculation of the PC "PLAXIS-8".
IT in the Processes of Creation and Operation of Construction Objects
Authors:   Central Ukrainian National Technical University, Kyslun Oleh , Parhomenko Yuriy ,   Central Ukrainian National Technical University, Skrynnik Ivan ,   Central Ukrainian National Technical University, Dariienko Viktor ,   Central Ukrainian National Technical University
Published: January 2021

The article presents the results of IT research in the processes of creation and operation of construction projects. An overview of the means of complex accounting automation in Ukraine is given. An overview of the market of computer-aided design tools for architecture and construction is given also their characteristics are given. An overview of integrated market management systems in Ukraine is presented. The field of application of information technologies is constantly expanding, and growing constantly require monitoring of new implementations and search for effective innovations. Awareness provides a competitive advantage for both the developer and the consumer. Thus, the task of IT monitoring arises, and in the presence of a common area of interest, a team of like-minded people faces the problem of IT research in the processes of creation and operation of construction projects. IT in the process of creating and operating construction projects is used in all life cycles of the latter. The software that serves these processes is diverse and mostly disparate and is a set of software products aimed at sectoral use [1]. The issue of introduction of modern IT in this area is relevant and there is a need for development by specialists, which requires their study. The software used can generally be divided into: general purpose software; specialized accounting programs and other accounting systems; computer-aided design systems; integrated management systems of the organization; building management systems; scheduling systems. The so-called specialized accounting programs and accounting systems presented on the Ukrainian market in the construction sector are the same as for other sectors of the economy, there are only certain adaptations to take into account the specifics of the scope. At this stage of economic development of Ukraine in the construction industry ERP systems have not yet become widespread. Building management systems are also waiting to be expanded in Ukraine.
Ways of Industrial Development for the Production of Biological Plant Protection Products in Ukraine
Authors:   Engineering and technological institute «Biotechnica» of NAAS, Krutiakova Valentyna , Belchenko Volodymyr ,   Engineering and technological institute «Biotechnica» of NAAS, Sheikin Borys ,   Engineering and technological institute «Biotechnica» of NAAS, Bulgakov Volodymyr ,   National University of Life and Environmental Sciences of Ukraine, Golovach Ivan ,   National University of Life and Environmental Sciences of Ukraine, Sviren Mykola ,   Central Ukrainian National Technical University
Published: January 2021

The problem of industrial production of biological plant protection products in Ukraine is important and relevant. The purpose of this study is to determine the principles of innovative approaches in the production of plant protection products based on microbiological drugs and entomophages and to propose the organizational structure of production of these products in Ukraine. Methods of theoretical generalization, research in applied microbiology and entomology, analysis and synthesis were used. The basic technological and technical methods and equipment for production at enterprises of different levels of biological plant protection products (BZZR) and their application in agrocenoses developed by ITI "Biotechnics" of NAAS are resulted, the general structure of system of biological protection of plants in Ukraine is offered. Emphasis is placed on specific technologies and equipment for the production of microbiological preparations of various scales: bacterial, fungal, viral, the use of nematodes. Attention is paid to the production of entomological drugs to protect plants from pests. Ground methods of BZZR introduction into agrocenoses and with the use of aviation are offered. The proposed innovative approaches to the development, creation and use of OSH in Ukraine, based on the system of bioproduction of these tools, will significantly increase their use in plant protection in organic production and the share of integrated plant protection. The ways of development, creation of industrial production and use of biological plant protection products in Ukraine are considered and offered, based on the developed system of bioproductions of these means. This will significantly increase their use in plant protection in organic production and the share of integrated plant protection.
Improving the Quality of Running-in of Car Engine Parts During Running-in Using a Complex Action Additive
Authors:   Central Ukrainian National Technical University, Solovykh Yevhen , Dubovyk Viktor ,   Central Ukrainian National Technical University, Pukalov Viktor ,   Central Ukrainian National Technical University, Nevdakha Yurii ,   Central Ukrainian National Technical University, Sereda Andrii ,   Central Ukrainian National Technical University
Published: January 2021

The purpose of the work is to improve the quality of the process of running-in of car engine parts during running-in using the additive of complex action. The tasks are the theoretical substantiation of the formation of transfer films during engine running-in and the conduct of comparative studies of the developed complex additive to M-8-B motor oil. The paper substantiates that in order to improve the quality and accelerate the running-in of car engine parts during running-in, a complex additive is required, which includes both surfactants and chemically active substances. The preconditions for obtaining transfer films on the friction surfaces of engine connections during running-in are considered. A frictional interaction is described in the case when the soft transfer film is strong and fixed on the main material, and the sliding surface coincides with the boundary between the film and the counter body. The presence in the zone of contact of surfactants with metals leads to the implementation of a special mechanism of frictional interaction, characterized by a colloidal system of particles in the lubricant and structural transformation on the interface. Comparative laboratory studies of the proposed additive were performed. The dependence of the moment of friction force on the time of the tests, the surface roughness of the samples worked in different compositions, as well as the distribution of the microhardness of the samples by depth were investigated. Based on the analysis of additives for running-in of engine parts, the use of complex additives containing surfactants and chemically active substances is determined as promising. Based on these studies, an additive containing ferrite spinel has been proposed. This allows you to control the running-in process through the structurally sensitive properties of the spinel composition. The use of the proposed additive of complex action helps to change the structure of the surface layer of the metal during friction under the action of temperature and load, which leads to improved quality of running-in of car engine parts during running-in.
Investigation of the Braking Process of Suspended Wheels of a Car With a Hydraulic Brake Drive
Authors:   Central Ukrainian National Technical University, Solovykh Yevhen , Dubovyk Viktor ,   Central Ukrainian National Technical University, Solovykh Andrii ,   Central Ukrainian National Technical University, Katerynych Stanislav ,   Central Ukrainian National Technical University, Ishov Maksym ,   Central Ukrainian National Technical University
Published: January 2021

For diagnosing car braking systems, bench methods have become the most widespread, and on power stands with running drums. The main disadvantage of these methods is the high cost of brake stands with low quality diagnostic information. At the same time the method of diagnosing brake systems on change of angular speed of the hung up wheels is perspective. But the considered method does not have a sufficiently complete theoretical justification, especially for cars with hydraulic brakes and therefore requires research. Therefore, the work substantiates the diagnostic modes and diagnostic parameters, obtained analytical dependences of the process of braking car wheels with hydraulic brakes, which describe the change in the angular deceleration of the suspended wheels over time in different parts of the brake diagram and the delay time of the brake system. The mathematical model is based on the differential equation of motion of the braked wheel when braking a car with a connected transmission (with clutch engaged) on a straight horizontal section of road. The change in braking torque during braking is determined by the nature of the pressure change in the drive. When braking the wheel, the braking force acts on the radius of the brake drum. The obtained analytical dependences make it possible to study the influence of various factors of the technical condition of brake systems on the performance of the braking process. In order to substantiate the diagnostic modes and diagnostic parameters, analytical dependences of the process of braking car wheels with hydraulic brakes have been developed, describing the change of angular deceleration of suspended wheels in time at different parts of the brake diagram and time delay of the brake system. The obtained analytical dependences make it possible to study the influence of various factors of the technical condition of brake systems on the performance of the braking process.
Perfil de Mortalidade por Câncer do Colo do Útero no Município do Rio de Janeiro no Período 1999-2006
Authors: Meira Karina Cardoso , Gama Silvana Granado Nogueira da , Silva Cosme Marcelo Furtado Passos da
Published: January 2021

Introdução: O câncer do colo do útero representa a quarta causa de mortalidade entre as mulheres brasileiras. Objetivo: Descrever o perfil da mortalidade por câncer do colo do útero nas mulheres residentes no município do Rio de Janeiro, no período de 1999 a 2006. Método: As informações foram extraídas do Sistema de Informação sobre Mortalidade. Foram incluídos os registros que apresentaram CID-10 referentes a câncer do colo do útero, corpo do útero e útero porção não especificada e como município de residência o Rio de Janeiro. Realizou-se a redistribuição dos óbitos classificados como: útero porção não especificada, câncer do colo do útero e corpo do útero, de acordo com a proporção de registros certificados originalmente para cada uma das categorias por causa de óbito, ano de ocorrência e faixa etária. Resultados: No período do estudo, ocorreram 2.752 óbitos, dos quais, 56,5% foram por câncer do colo do útero, 20,0% corpo do útero e 23,5% por útero porção não especificada. Após a redistribuição dos óbitos, as taxas de mortalidade por câncer do colo do útero e corpo do útero foram respectivamente 6,27/100.000 e 2,12/100.000. As maiores taxas de mortalidade por câncer do colo do útero foram observadas em mulheres pretas/pardas, na faixa etária dos 50-70 anos, solteiras, e que residiam nas áreas programáticas mais pobres da cidade. Conclusão: Os achados sugerem a necessidade de novas estratégias no âmbito das políticas de saúde pública, que contemplem maior número de mulheres nas ações de prevenção secundária, tendo em vista a alta taxa de mortalidade por essa neoplasia.
Candida Oral como Fator Agravante da Mucosite Radioinduzida
Authors: Simões Cristiane Araújo , Castro Jurema Freire Lisboa de , Cazal Claudia
Published: January 2021

Introdução: O tratamento antineoplásico provoca algumas sequelas indesejáveis no paciente com câncer de cabeça e pescoço. Muitas vezes, o surgimento de manifestações clínicas graves, como as mucosites, obriga a interrupção temporária do tratamento, diminuindo a qualidade de vida do paciente e aumentando os custos do seu internamento. É possível que a mucosite oral induzida pela irradiação e quimioterapia seja agravada por infecções fúngicas oportunistas que a torna mais resistente aos tratamentos convencionais. Objetivos: Este trabalho tem como objetivos identificar a presença de espécies de Candida e analisar a possibilidade deste fungo atuar como fator agravante da mucosite em pacientes portadores de câncer de cabeça e pescoço, os quais estejam sendo submetidos ao tratamento antineoplásico. Método: Os pacientes foram selecionados de modo consecutivo no Hospital do Câncer de Pernambuco no período compreendido entre outubro de 2008 a abril de 2009. A prevalência de Candida sp foi mensurada através da análise de raspados citológicos dos pacientes com mucosite oral. A presença do fungo foi correlacionada com o grau de severidade das lesões de mucosite. Resultados: Os resultados mostraram uma associação positiva entre a colonização fúngica e as lesões mais severas (graus III e IV). Conclusão: Os resultados apresentados podem contribuir para a resolução de mucosites não convencionais, as quais não respondem ao tratamento usual.
Avaliação Postural em Pacientes Submetidas à Mastectomia Radical Modificada por meio da Fotogrametria Computadorizada
Authors: Melo Marcela Silvino Iglésias , Maia Juliana Netto , Silva Dayse de Amorim Lins e , Carvalho Celina Cordeiro de
Published: January 2021

Introdução: A cirurgia de mastectomia radical modificada pode acarretar alterações na postura das mulheres acometidas por câncer de mama. Para guiar mais precisamente a conduta fisioterapêutica, a fotogrametria computadorizada vem sendo amplamente difundida como recurso diagnóstico, especialmente em avaliações posturais. Objetivo: O objetivo deste estudo foi avaliar a postura de pacientes submetidas à cirurgia de mastectomia radical modificada através da fotogrametria computadorizada. Métodos: Trata-se de um estudo do tipo transversal, realizado no setor de Fisioterapia do Hospital de Câncer de Pernambuco, no período de março a maio de 2007. A amostra foi constituída por 22 mulheres submetidas à cirurgia de mastectomia radical modificada para tratamento do câncer de mama, com idades entre 37 e 60 anos, sem avaliação postural fisioterapêutica na fase pré-cirúrgica. As imagens foram capturadas em quatro protocolos de análise postural e obtidas na visão anterior e posterior, laterais direita e esquerda. Posteriormente, as imagens foram analisadas pelo software SAPO versão 0.67. Nas análises comparativas foi utilizado o teste t-Student, sendo p<0,05 para todas as variáveis e realizadas no programa SPSS, versão 8.0. Resultados: Foram observadas diversas alterações posturais, porém as principais estão relacionadas à anteriorização de cabeça (25,84±11,33; p=0,001) e protrusão de ombro homolateral (29,79±7,64; p=0,001) à intervenção cirúrgica. Conclusão: Mulheres que realizam tratamento cirúrgico do tipo mastectomia radical modificada para tratamento do câncer de mama podem apresentar alterações posturais e as principais estão relacionadas a anteriorização de cabeça e protrusão de ombro homolateral à cirurgia.
Comunicação de Notícias Difíceis: Compartilhando Desafios na Atenção à Saúde
Authors: Facina Taís
Published: January 2021

Este livro, lançado em 2010 pelo Instituto Nacional de Câncer (INCA), é resultado de uma experiência inovadora reunindo grupos interdisciplinares de profissionais para a discussão de casos clínicos, baseada na formulação de Michel Balint, e tendo como tema central as dificuldades de comunicação de más notícias na prática clínica dos profissionais da saúde.
Hemicorporectomia Modificada: Relato de Caso
Authors: Wainstein Alberto Julius Alves , Kansaon Milhem Jameledien Morais , Mafra Marcus Vinícius Mourão , Cabral Raquel Martins , Brasil Guilherme Jurdi , Santos Fernando Augusto de Vasconcellos , Lacerda Lycia Tobias de
Published: January 2021

Introdução: O carcinoma de células escamosas é, reconhecidamente, uma das complicações tardias das úlceras de pressão. Devido ao seu comportamento biológico agressivo e ao diagnóstico frequentemente tardio, usualmente são necessárias ressecções locais extensas para controle desta afecção. Objetivo: Descrever a hemicorporectomia modificada com preservação dos ossos pélvicos em paciente com lesão tumoral multicêntrica, localmente avançada. Material e Métodos: Relatamos o caso de um paciente de 57 anos, sexo masculino, paraplégico desde a adolescência, apresentando úlceras de decúbito em regiões trocantéricas e sacral, complicando com carcinoma de células escamosas, tratado por meio de hemicorporectomia modificada, preservando os ossos pélvicos. Resultados: O procedimento cirúrgico foi realizado por equipe multidisciplinar, possibilitando a ressecção de toda a lesão tumoral, por meio de hemicorporectomia, preservando os ossos da pelve e coluna lombossacral. O ato operatório durou oito horas, o paciente permaneceu por três dias em terapia intensiva, o tempo total de internação foi 15 dias e não houve necessidade de hemotransfusão. No período pós-operatório mediato ocorreu necrose parcial do retalho cutâneo e o paciente recebeu alta hospitalar em boas condições. Conclusão: Apesar de ter sua aparência física drasticamente modificada e a alta morbidade do tratamento realizado, o procedimento cirúrgico proporcionou melhor qualidade de vida e tornou possível a cura dessa afecção.
Terapia Nutricional Convencional versus Terapia Nutricional Precoce no Perioperatório de Cirurgia do Câncer Colorretal
Authors: Tartari Rafaela Festugatto , Pinho Nivaldo Barroso de
Published: January 2021

Introdução: A abordagem nutricional é fundamental no cuidado de pacientes submetidos à cirurgia do câncer colorretal. Rotinas referentes ao cuidado perioperatório, principalmente quando relacionadas a nutrição, permanecem pouco alteradas. Assim, a recuperação dos pacientes permanece um grande desafio. Objetivo: Analisar as evidências científicas quanto à terapia nutricional convencional e avaliar os benefícios da nutrição precoce em pacientes submetidos à cirurgia colorretal. Método: Trata-se de uma revisão da literatura que utilizou as bases de dados Medline, LILACS e SciELO . O período de busca foi de 2005 a 2010, com as palavras-chave: “earlynutrition”, “colorectalsurgery”. Resultados: Dezoito artigos foram utilizados de acordo com os critérios de inclusão.A resposta ao estresse, íleo pós-operatório, deiscência anastomótica e morbidades são realidades que interferem negativamente na evolução dos pacientes submetidos à cirurgia colorretal e estão relacionadas com condutas convencionais ainda praticadas em grandes centros. A oferta de líquidos hiperglicídicos até 2 horas antes da cirurgia tem sido vista como um dos possíveis fatores benéficos, com melhora da resposta orgânica. No pós-operatório, a prática de início da dieta somente após a peristalse foi considerada sem evidência científica, além de potencializar o estresse e proporcionar maior tempo de permanência hospitalar. O preparo intestinal também foi considerado um procedimento complicador por aumentar o tempo de internação e ocasionar desidratação intraoperatória. Conclusão: A adoção de novas medidas multidisciplinares, incluindo a nutrição perioperatória precoce, contribui para redução de morbidades, tempo de internação, gastos hospitalares, além de proporcionar maior satisfação dos indivíduos.
Policy Forum: The GST/HST Obligations of Non-Resident E-Commerce Firms—Jurisprudence and Policy
Authors: Shatalow Nicholas
Published: January 2021

E-commerce presents a broad range of challenges for policy makers. In the tax context, it has the potential to obscure the relationship between a firm and the appropriate taxing jurisdiction. This article explores the goods and services tax (GST)/harmonized sales tax (HST) obligations of non-resident e-commerce firms with no physical presence in Canada—specifically, whether those firms may be required to register for, collect, and remit GST/HST in respect of their activities in the Canadian market. Recent developments in the common law (albeit in a non-tax context) indicate that non-resident e-commerce firms with no physical presence in Canada may be found to be carrying on business in Canada. Since carrying on business in Canada is a key element in determining a person's GST/HST obligations, it is likely that non-resident e-commerce firms that are found to meet the requirement will be subject to such obligations in respect of taxable supplies made digitally in the Canadian market. That said, there is at present a great deal of uncertainty about the specific factors to be used in determining whether the activities of a non-resident e-commerce firm are sufficient to meet the carrying-on-business threshold. The author of this article recommends that Parliament should address this uncertainty by amending the Excise Tax Act to deem non-resident e-commerce firms to be carrying on business in Canada if they exceed specific de minimis sales thresholds.
Program Kemitraan Masyarakat (PKM) Jasa Syariah Berbasis Margin Bagi Para Ibu Kelompok Pengajian
Authors: Said Laila Refiana
Published: January 2021

Tujuan Program Kemitraan Masyarakat (PKM) adalah memberikan pengetahuan sekaligus pelatihan tentang tata cara jasa keuangan Syariah berbasis margin serta membantu para ibu rumah tangga untuk berwirausaha menjual produk makanan dalam rangka membantu ekonomi rumah tangga.  Metode yang digunakan adalah ceramah (penyuluhan), pelatihan, Focus Group Discussion (FGD) serta pendampingan kepada peserta.  Kegiatan pengabdian kepada masyarakat ini juga menyisihkan sebagian dana pengabdian sebesar 2 juta rupiah dalam bentuk barang peralatan memasak untuk diserahkan ke pihak mitra yang membentuk perkumpulan ekonomi Syariah. Tujuannya agar dana tersebut dapat digunakan untuk memulai usaha pinjam dana Syariah secara akad jual beli berbasis margin. Indikator keberhasilan dalam jangka pendek terlihat dari keaktifan pengurus perkumpulan ekonomi Syariah dalam kegiatan FGD dan bertanya tentang teknis pelaksanaan jasa keuangan berbasis Syariah kepada pihak tim pengabdian. Indikator keberhasilan dalam jangka panjang akan dapat diukur dalam beberapa tahun ke depan seiring dengan aktivitas koperasi Syariah.
Perception on the improvement of attention service to the students under the basic conditions of quality for the institutional licensing of the Private University of Trujillo [Percepción sobre la mejora del servicio de atención a los estudiantes bajo las condiciones básicas de calidad para el licenciamiento institucional de la Universidad Privada de Trujillo]
Authors: Gómez Avila José Alberto , Díaz Díaz Franklin Alexis , Chávez Arana Elka Judiht , Córdova Otero Juan , Vega González Juan Antonio
Published: January 2021

This research work has been developed with the purpose of evaluating the improvement of the attention service to the students of the Private University of Trujillo with the fulfillment of condition I, component I.4 referring to information systems of the Basic Conditions of Quality (BCQ) to obtain institutional licensing. The indicators used as information systems that involve enrollment, payments, bibliographic material, virtual learning have been used to evaluate the improvement of the attention service to students. The hypothesis was contrasted by applying the pre-experimental design with pre-test and post-test. The result obtained from the significant coefficients of the respective indicators the pre-test was 0.42, 0.15, 0.71, 0.58, 0.35, 0.22, 0.42, 0 and the post-test was 0.93, 1, 0.88, 0.79, 0.88, 0.90, 0.83, 0.67. It was possible to determine that there is no contradiction within each of the indicators, since the results show that in each indicator after using the information systems required in the basic quality conditions, a better service for the students was obtained.
Supply Chain Management Analysis Using the Business Process Model and Notation In the Midst of Covid-19 Pandemic
Authors: Nuzulita Nania , Djohan Rheinata Saskya Aziizah , Roiqoh Salsabila
Published: January 2021

Supply Chain Management (SCM) aims to maximize the value of the products produced to meet customers' needs and demands. This study aims to conduct an assessment of Supply Chain Management at MS Company and suggested BPMN with adjusted business processes. The Business Process Model and Notation (BPMN) approach is useful for describing complex business process modelling in detail but still easy to understand. Thus, it can minimize errors in implementing business processes. We used the study case approach to conduct this research by studying several journals related to SCM. A discussion was then held to improve the four main processes associated with SCM, and the improvement was written by using BPMN. This study explains that BPMN can be used to give detail and minimize errors so that the modified business process modelling is easy to understand and facilitates communication between business process designers and business process executors. Some MS company improvement in its SCM includes production scheduling, goods procurement, production implementation, and warehouse management. It is suggested that further observation and examination of the improved SCM is needed to prove the new SCM's success in the midst of the covid-19 pandemic.
Determinan Struktur Modal dalam Upaya Meningkatkan Profitabilitas Perusahaan Manufaktur di Indonesia
Authors: Chandra Stefani , Ng Martha , Wijaya Evelyn
Published: January 2021

Setiap perusahaan dalam menjalankan usahanya mempunyai tujuan yaitu untuk menghasilkan profit yang optimal. Profit mampu memberikan gambaran kinerja perusahaan dalam suatu periode serta menjadi daya tarik bagi investor dalam melakukan kegiatan jual beli saham. Perusahaan manufaktur merupakan salah satu perusahaan yang memberikan peranan penting bagi perekonomian nasional. Hal ini dapat terlihat dari laba perusahaan yang menunjukkan trend meningkat dibandingkan sektor lainnya. Penelitian ini bertujuan untuk menganalisis pengaruh ukuran perusahaan, uniqueness dan tangibilitas terhadap struktur modal dan profitabilitas pada perusahaan manufaktur. Populasi dalam penelitian adalah seluruh perusahaan manufaktur yang terdaftar di BEI periode 2010-2018 sebanyak 145 perusahaan. Sampel dalam penelitian sebanyak 96 perusahaan yang dipilih dengan menggunakan teknik purposive sampling. Teknik analisis data penelitian menggunakan bantuan program AMOS. Hasil penelitian menyatakan bahwa ukuran perusahaan dan tangibilitas tidak berpengaruh signifikan terhadap struktur modal, uniqueness berpengaruh signifikan positif terhadap struktur modal, dan struktur modal berpengaruh signifikan negatif terhadap profitabilitas. Hasil penelitian mendukung pecking order theory yang menyatakan bahwa semakin rendah nilai hutang perusahaan maka akan meningkatkan profitabilitas perusahaan.
INFLUÊNCIA DAS MUDANÇAS CLIMÁTICAS NA PRODUÇÃO CAFEEIRA SEGUNDO A PERCEPÇÃO DAS CAFEICULTORAS
Authors: Soares Wesley Oliveira , Ferreira Williams Pinto Marques , Ribeiro Silvana Maria Novais Ferreira , Fonseca Humberto Paiva
Published: January 2021

Na cafeicultura, as intempéries afetam não somente as plantas, mas também as mulheres que atuam no processo produtivo dessa commodity. Logo, é necessário que as mulheres que trabalham na produção do café tenham maior conhecimento acerca das influências das Mudanças Climáticas na cafeicultura. Objetivou-se analisar a percepção das mulheres que trabalham na cafeicultura em 15 municípios localizados na região das Matas de Minas sobre a influência das mudanças climáticas na produção de café. Foram aplicados 67 questionários semiestruturados às mulheres em 15 municípios da região das Matas de Minas, os dados foram tabulados e foi identificado que a maior parte delas têm a televisão como principal fonte de informação sobre as mudanças climáticas globais e acreditam que tais mudanças não irão contribuir para a melhoria do café na região bem como podem influenciar na extinção da cafeicultura da região no futuro, interferindo assim, de alguma forma no futuro delas. De modo geral as mulheres que declararam ter conhecimento médio sobre mudanças climáticas e aquecimento global.
REGULARIZANDO A SEGREGAÇÃO: OS EFEITOS DO PROGRAMA DE REGULARIZAÇÃO FUNDIÁRIA EM SÃO JOSÉ DO RIO PRETO/SP
Authors: Mateus Lima Luiz Henrique
Published: January 2021

No espaço urbano, a terra é considerada uma mercadoria que é acessada de forma desigual. Aqueles que tem melhores condições financeiras, que são mais abastados, podem viver em áreas bem servidas de infraestruturas, enquanto que para aqueles mais pobres restam as periferias, as favelas ou os bairros mais distantes principalmente da região central, que é mais valorizada. Em São José do Rio Preto, o intenso fluxo de novos citadinos em direção à essa cidade ocorreu principalmente nas décadas de 1960 e 1970. Nessa época, houve um grande aumento populacional em uma cidade que ainda não estava preparada para isso, e o resultado foi o agravamento nos problemas urbanos marcados principalmente pela falta de moradias. Se aproveitando disso, os proprietários fundiários apareceram com as soluções, que vieram na forma de loteamentos construídos de forma que desrespeitavam várias leis municipais. Entre as décadas de 1980 e 1990, mais de uma centena de empreendimentos precários foram construídos. Nesses locais, não existia pavimentação, áreas de lazer, ligação elétrica, tratamento de água e esgoto etc. Somente em 2009 a Prefeitura iniciou o programa de regularização fundiária, tendo trazido até o momento 56 loteamentos para a legalidade. Contudo, com a regularização, esses empreendimentos passam a fazer parte da planta urbana oficialmente, tornando visível assim um dos principais efeitos: a segregação socioespacial, já que era normal que os agentes implantassem esses loteamentos em áreas distantes. O objetivo deste artigo é analisar os efeitos do programa municipal de regularização fundiária e quais os seus impactos na cidade.
O COCO E AS CERCAS: DINÂMICAS TERRITORIAIS DAS QUEBRADEIRAS DE BABAÇU NO BICO DO PAPAGAIO
Authors: Dos Santos Luciano Laurindo
Published: January 2021

Este artigo tem como objetivo analisar as dinâmicas territoriais envolvendo as quebradeiras de coco babaçu no Bico do Papagaio, a partir de suas oralidades. O processo de territorialização de inúmeras atividades econômicas nessa porção da Amazônia brasileira começa a se destacar a partir da Ditadura Militar, como um resultado das políticas públicas. A metodologia utilizada foi o estudo de caso, a partir da pesquisa qualitativa. Os resultados indicam que a pecuária bovina é a atividade econômica que ao longo das últimas quatro décadas demonstram um intensivo processo de ampliação de territorialização, gerando como consequência um monopólio em função da (re) organização territorial para atender a essa finalidade, ao passo que acelera o processo de desterritorialização de atividade de base de economia familiar, como no caso das quebradeiras de coco babaçu. As cercas e as expulsões das posses, ao longo das últimas décadas passam a representar para as quebradeiras um processo continuo de perda de territórios. Impactando negativamente na vida de milhares de famílias que possuem sua subsistência ligada a quebra do coco babaçu.Palavras – chave: Quebradeiras de coco. Território. Bico do Papagaio.
O MODELO DO “ESTADO MODELO”: o espaço sul-mato-grossense e as demandas a ele submetidas pós golpe de 1964
Authors: Buscioli Roberson da Rocha
Published: January 2021

Neste artigo buscamos compreender a institucionalização do planejamento no seio do Estado pós–Golpe de 1964, e a definição das políticas de integração regional como medida de desenvolvimento para o espaço sul-mato-grossense, tendo como objeto de análise um conjunto de planos e programas de desenvolvimento direcionados para esse espaço entre os anos da Ditadura Militar. Os seguintes procedimentos de pesquisa foram adotados: revisão de literatura, primeiro, buscando compreender o sistema de (re)produção do capital, sua relação com o Estado e (re)produção do espaço, dessa forma, percorrendo pelo discurso ideológico que lhe dá sustentação. Secundariamente, buscando documentos oficiais de órgãos governamentais encarregados institucionalmente de planejar, executar e acompanhar as políticas públicas de planejamento e do desenvolvimento afim de compreender as políticas adotadas no período, além da produção de quadros, gráfico e produtos cartográficos. Como resultado observamos a ação do Estado no ajustamento desse espaço para a reprodução ampliada do capital, que culminou na sua constituição enquanto Unidade Federativa, discursivamente apresentada como estratégica para o desenvolvimento da região, pautada na adoção de uma estratégia de desenvolvimento polarizada, configurando-se na elevação de algumas cidades ao status de polo de desenvolvimento, com alta concentração dos recursos na implantação de infraestrutura de logística, armazenamento e pesquisa agropecuária, além de ampliação de linhas de financiamento para o agronegócio, confirmando o papel do Estado enquanto fundo público indispensável para o desenvolvimento capitalista.
MEIO TÉCNICO-CIENTÍFICO-INFORMACIONAL E AS CENTRAIS DE ABASTECIMENTO DE ALIMENTOS NO BRASIL
Authors: Oliveira Dionisio Larissa , Hespanhol Antonio Nivaldo
Published: January 2021

O advento do meio técnico-científico-informacional se deu após a Segunda Guerra Mundial e é caracterizado pela utilização de modernas tecnologias. No Brasil, o meio técnico-científico-informacional se efetivou somente na década de 1970 e teve grande influência no processo produtivo. As centrais de abastecimento foram criadas pelo Governo Federal, no mesmo período, e estão mais concentradas nas regiões Sul e Sudeste do Brasil. De tal modo, o objetivo deste artigo é abordar a articulação das centrais de abastecimento com o meio técnico-científico-informacional, destacando as regiões Sul e Sudeste, tendo em vista que nestas duas regiões as inovações e a modernização da agricultura foram mais expressivas. Para elaboração do artigo foi realizado levantamento bibliográfico sobre o meio técnico-científico-informacional, as centrais de abastecimento e a modernização da agricultura, bem como o levantamento de dados e informações nas publicações da ABRACEN, CONAB e CEAGESP.
EDITORIAL
Authors: Torres Marco Aurélio Neri
Published: January 2021

Editorial
An Analysis of Village Fund Implementation in Central Java Province: An Institutional Theory Approach With a Modeling Institutional Aspect
Authors: Surachman Eko Nur
Published: January 2021

The implementation of the fiscal decentralization concept in Indonesia has completed with the issuance of the Village Law and Village Fund Program. Nevertheless, some problems arose in the application. This study aims to map the issues and to build a relationship model based on institutional theory, using content analysis and triangle approach interviews. The study concludes that the Village Fund is profoundly affected by the coercive element that is sourced from the authority of the government to regulate and supervise the program. The coercive then influence the normative in which the regulation frame and strict implementation lead to the difficulties to fulfill the administrative requirements. It then affects the cognitive element on how to make sustain and executable planning of the Village Fund Program, which leads to poor planning, so that difficult to be executed. As it is mandatory, the program is still run improvised that makes the output utilization was low.
Importancia del vínculo entre las matemáticas y el Turismo
Authors: Armstrong Zulueta Dariel
Published: January 2021

En la actualidad el desarrollo turístico es soportado por toda una red de estudios y tecnologías que tienen su basamento en herramientas y modelos matemáticos aplicados a los disimiles contextos que se generan en el sector. Desde las sombras han sido un factor clave para la interpretación, comprensión y toma de decisiones en todos los fenómenos que pueden darse en el turismo. La presente investigación tiene como objetivo demostrar la importancia de las matemáticas en la gestión turística de un destino, a partir de la caracterización las herramientas con aplicación en el turismo y su implementación, y la evaluación de la incidencia de dichas herramientas en el desarrollo de la gestión turística. Se enfoca fundamentalmente en la aplicación de la estadística, la optimización y las Tecnologías de la Información y las Comunicaciones (TIC). Dentro de las TIC caracteriza brevemente aplicación de las Big Datas y su importancia para la generación de información confiable y en tiempo real. Por último, realiza un breve diagnóstico de la aplicación de las bases de datos en Cuba y su posible evolución a las Big Datas.

Los objetivos de la investigación son logrados a partir de la consulta bibliográfica de diferentes fuentes, en donde se analizan casos teóricos y prácticos de aplicaciones de herramientas matemáticas en diferentes aspectos de análisis económicos, sociales, financieros, de marketing, entre otros.