bluuebunny/crossref_metadata_2025 huggingface dataset:
COMPARISON OF ARIMA, TRANSFER FUNCTION AND VAR MODELS FOR FORECASTING CPI, STOCK PRICES, AND INDONESIAN EXCHANGE RATE: ACCURACY VS. EXPLAINABILITY
Authors: Purwa Taly , Nafngiyana Ulin , Suhartono Suhartono
Published: June 2020

The Consumer Price Index (CPI), stock prices and the rupiah exchange rate to the US dollar are important macroeconomic variables which their movements show the economic performance and can affect the monetary and fiscal policies of Indonesia. This makes forecasting effort of these variables become important for policy planning. While many previous studies only focus on examining the effect among macroeconomic variables, this study uses ARIMA (univariate method), transfer function and VAR (multivariate methods) to measure the forecasting accuracy and also observing the effect between these macroeconomic variables. The results showed that the multivariate methods gave better explanation about the relationship between variables than the simple one. Otherwise, the results of accuracy comparison showed that the multivariate methods did not always yield better forecast than the simple one, and these conditions in line with the results and conclusions of M3 and M4 competition.
PENGELOMPOKAN RUMAH TANGGA DI INDONESIA BERDASARKAN PENDAPATAN PER KAPITA DENGAN MODEL FINITE MIXTURE
Authors: Susanto Irwan , Handajani Sri Sulistijowati
Published: June 2020

In the statistical modeling framework, the form of the income distribution can be approaching based on certain statistical distributions. The use of the finite mixture model is relatively flexible in the modeling of the income distribution that has a multimodal pattern. The multimodal pattern can be indicated as the existence of different cluster on the data. The different clusters which can reflect the economic homogeneity of income are represented by the mixture components of the finite mixture model. In this paper, the finite mixture model is implemented for modeling the distribution of household income per capita in Indonesia based on The Fifth Wave of the Indonesia Family Life Survey (IFLS5) 2014-2015. The mixture components of the finite mixture model have been build based on the heavy-tailed statistical distributions, i.e., gamma, lognormal, and Weibull distributions. The estimation of the fitting finite mixture model was conducted using the maximum-likelihood estimation method through the expectation-maximization (EM) algorithm. The suitable finite mixture models were verified with the bootstrap likelihood ratio statistics test, Akaike Information Criterion (AIC) and Bayesian Information Criterion (BIC). Based on the results, the distribution of household income per capita in Indonesia can be modeled by the four components-lognormal mixture model.
PERSAMAAN DIFERENSIAL ORNSTEIN-UHLENBECK DALAM PERAMALAN HARGA SAHAM
Authors: Hidayat Amam Taufiq , Subanar Subanar
Published: June 2020

Geometric Brownian motion is one of the most widely used stock price model. One of the assumptions that is filled with stock return volatility is constant. Gamma Ornstein-Uhlenbeck process a model to describe volatility in finance. Additionally, Gamma Ornstein-Uhlenbeck process driven by Background Driving Levy Process (BDLP) compound Poisson process and the marginal law of volatility follows a Gamma distribution. Barndorff-Nielsen and Shepard (BNS) Gamma Ornstein-Uhlenbeck model can to sample the process for the stock price with volatility follows Gamma Ornstein-Uhlenbeck process. Based on these, the simulation result are compared BNS Gamma Ornstein-Uhlenbeck model with geometric Brown motion for Standard and Poor (SP) 500 stock data. Simulation result give BNS Gamma Ornstein-Uhlenbeck model and Geometric Brownian motion a Root Mean Square Error (RMSE) are 0,13 and 0,24 respectively. These result indicate that the BNS Gamma  Ornstein-Uhlenbeck model gives a more accurate  than Geometric Brownian motion
ESTIMASI SELANG KEPERCAYAAN NILAI UJIAN NASIONAL BERBASIS KOMPETENSI BERDASARKAN MODEL REGRESI SEMIPARAMETRIK MULTIRESPON TRUNCATED SPLINE
Authors: Hidayati Lilik , Chamidah Nur , Budiantara I Nyoman
Published: June 2020

Confidence interval estimation is important in statistical inference for the parameters of the regression model, but the theory of confidence interval estimation for multi-response semiparametric regression model parameters based on the truncated spline estimator has not been examined. In this study, we estimate the confidence interval of the multi-response semiparametric regression model based on the truncated spline estimator by using pivotal quantity method with the central limit theorem approach. This confidence interval theory is applied to data of competency-based national exam (UNBK) scores in West Nusa Tenggara Province where its UNBK  in the lowest position among other provinces in Indonesia. The method used for estimating parameters is weighted least square. The best model is determined based on the Generalized Cross Validation (GCV) minimum value. Based on the estimated 95% confidence interval of parameters of the multi-response truncated spline semiparametric regression model, the results showed that the insignificant factors affecting the UNBK scores were gender and parental education duration while the report card of scores and USBK scores had a positive effect on the UNBK scores but only the UNBK scores of mathematics that report card of scores factor has a negative effect on it.
Obrót nieruchomościami rolnymi w świetle traktatowej swobody przepływu kapitału – rozważania na gruncie orzecznictwa Trybunału Sprawiedliwości Unii Europejskiej
Authors: Włodarczyk Beata
Published: June 2020

The aim of the article is to outline the legal issues of trading in agricultural property in the European Union, which is entirely subject to basic treaty rules. The free movement of capital, regulated in Article 63 of the Treaty on the Functioning of the European Union, is of particular importance in relation to cross-border operations connected with trading in agricultural property. Therefore the legislation in force and applicable in EU Member States should ensure that citizens of other Member States have the possibility of exercising this freedom. However, the free movement of capital is not absolute. In the light of the established case-law of the Court of Justice of the European Union, regulations limiting free movement of capital may be introduced at national level, provided that they pursue general interest objectives and comply with the principles of proportionality and non-discrimination.
Pojęcie nieruchomości rolnej, gospodarstwa rolnego i działalności rolniczej w ustawie o kształtowaniu ustroju rolnego – wybrane kwestie z praktyki notarialnej
Authors: Suchoń Aneta
Published: June 2020

The aim of the considerations is an attempt to solve problems related to the interpretation of the concepts of agricultural property, an agricultural holding and agricultural activity as defined in the Act on shaping the agricultural system experienced by notaries in their practice. After the entry of the Act into force, and especially after the amendment of 14 April 2016, there emerged interpretation problems related to the concept of agricultural property, an agricultural holding and agricultural activity, but the practice and doctrine strived to find interpretative solutions despite the difficulties. As a result, however, diverse interpretations of the concepts or terms in question did not serve the stability of the trading in agricultural property. The modifications introduced on the basis of the amendment of the Act of 26 April 2019 were to some extent a response to the dilemmas reported, and as such they must be assessed positively. At the same time, certain controversial issues remain, and example of which is the impact of a change from the designation of agricultural property for non-agricultural purposes into a 5-year obligation to operate an agricultural holding.
Przekształcenia spółek kapitałowych a ustawa o kształtowaniu ustroju rolnego
Authors: Bieluk Jerzy
Published: June 2020

The Act of 11 April 2003 on shaping the agricultural system introduced a number of restrictions on trading in agricultural property. As of 30 April 2016, the regulations of the Act also apply to companies undergoing a division, change of status or a merger. In this article a change of status of a company which owns agricultural real estate was analysed. For practical reasons, the most common situation of this kind is the conversion of a limited liability company into a public limited company. The analysis of this has revealed that the construction of legal regulations regulating this issue is highly imprecise. However, the biggest problem seems to be the fact that statutory objectives provided for in the Act have not been achieved. In the case of a conversion of a limited liability company into a public limited company, the shareholders of the limited liability company become shareholders of the public limited company, so from the substantive law point of view, the same entity continues to exist. Solutions of this kind do not make any legal sense and certainly do not achieve any of the objectives set out in the Act analysed.
Z rozważań nad aktualnym kształtem pierwokupu dzierżawcy nieruchomości rolnej w świetle ustawy o kształtowaniu ustroju rolnego
Authors: Blajer Paweł Andrzej
Published: June 2020

The purpose of the considerations is to attempt to determine the current status of the tenant’s pre-emptive right resulting from the Act on shaping the agricultural system, taking into account the amendments introduced by the Act of 26 April 2019. The author states that the amendments to the pre-emptive right of the lessee, or tenant, of an agricultural property should, in principle, be assessed positively. They have widened the scope of objects of tenant’s pre-emptive rights, which nevertheless still remain rather narrow, while the regulation of the statutory pre-emptive right of the lessee raises many practical doubts. In the author’s opinion, a lease should be treated as a factual instrument to improve the agrarian structure of the country. A normative model of agricultural leases should be developed, which would include a rationally formed pre-emptive right of the lessee of the property.
W sprawie pojęcia wyznaniowej żydowskiej osoby prawnej. Uwagi na tle wyroku Sądu Najwyższego z 9 lutego 2007 r., sygn. III CSK 411/06
Authors: Borecki Paweł
Published: June 2020

In its judgment of February 9, 2007 (Ref. No. III CSK 411/06), the Supreme Court formulated a narrow interpretation of the concept of a Jewish religious legal entity based on a formal criterion. In practice, the position of the Court has limited on a permanent basis the reprivatization of real estate to the benefit of Jewish communities and the Association of Communes. This reprivatization has been conducted in a narrow scope for over twenty years by the Regulatory Commission for Jewish Religious Communities. The restrictive interpretation that was adopted for the concept of a Jewish religious legal entity is inconsistent with the principle of correct legislation, with the principle of public trust in the state and its law, and in fact with the principle of social justice. Jewish religious communities in a number of areas are treated worse than the largest or oldest Christian churches. This applies in particular to the issue of membership of Jewish religious communities, tax matters or religious foundations. In addition, the interpretation of the Supreme Court does not take into account the historical forms of the organization of Judaism in Poland. On the other hand, the interpretation adopted on a consensus basis by the Regulatory Commission for Jewish Religious Communities in June 1999 is correct. It is functional. The Supreme Court should weigh constitutional principles and opt for this functional interpretation, instead of adopting a formal interpretation.
Experimental Evaluation of Ball Bearing Performance Using Nanoflake-Blended Greases
Authors: Bhardwaj V. , Pandey R. K. , Agarwal V. K.
Published: June 2020

Ball bearings encounter grease being pushed aside from the concentrated contact of their rolling elements and races due to the continuous motion of balls. This yields lubricant starvation at the contacts inside the bearings. In this situation, the tribological and vibration performances of ball bearings deteriorate. Therefore, improving the performance behaviors of ball bearings despite starvation is a vital research task. Thus, the objective of this paper was set to explore improving the performance behaviors of a ball bearing employing nanoflake (molybdenum disulfide (MoS2), tungsten disulfide, and hexagonal boron nitride)-blended greases. This paper reports the comparisons of frictional torque, temperature rise, and vibrations of test bearings lubricated with fresh and nanoflake-blended greases. The surfaces of races were examined after the experiments using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX). The surface topographies of races and balls were captured using a 3-D profilometer for comparison. The blended greases yielded significant reductions of 17–33, 16–23, and 8–64 % in frictional torque, temperature rise, and vibration, respectively. Surface analyses of races also revealed better tribofilm formation in the presence of MoS2 in grease compared with the other cases.
Geographical approach of Industry 4.0 based on information and communication technologies at Hungarian enterprises in connection with industrial space
Authors: Kiss Éva , Nedelka Erzsébet
Published: June 2020

In the short history of Hungarian industry there were relevant changes several times, which had a great impact not only on industrial production and employment, but also on the spatial pattern of industry. After the regime change and latest economic crisis Industry 4.0 or/and the fourth industrial revolution mean(s) newer challenge. Due to information and communication technologies (ICT), which can be considered the basis of Industry 4.0 radical changes can be expected in all fields of life and numerous questions will emerge. The primary aim of this paper is to reveal the geography of older and newer information and communication technologies and their relationship with the spatial pattern of Hungarian industry. The main question is whether the digital divide follows the industrial divide in the Hungarian economic space or not. According to the analysis based on different ICT and industrial indicators, there is no close correlation between the digital and industrial spaces. The geography of Industry 4.0 is characterised by a sharp north-south division.
Electrifying Times: restructuring and decision-making in an automobile concern in the 21st century – The case of BMW Group
Authors: Haider Martin
Published: June 2020

The aim of this paper is to capture the changed location decision-making processes and location factors of the automotive industry, resulting from the current challenges brought by electro mobility. From the Taylorist assembly-line production system in the “Fordism” era to the just-in-time focused manufacturing of the Japanese carmakers during “post-Fordism” and at the turn of the millennium with global production and new technologies in the digital age, location analysis has changed massively over time. The same is to be expected for the fourth revolution in the industry. For this reason, the decision-making process of a major German car manufacturer is analysed in a field study conducted over a two-year period. Based on this, a decision process that takes the new framework conditions into account is modelled. The relevant location factors are then examined in a survey of the relevant departments in the BMW Group. Due to the changed production requirements in the course of the electrification, the uncertainty in the technological change and the unstable political trading conditions, the factors: network suitability, risk exposure, optimal sunk cost usage and sustainability play central roles. Before the latest economic crisis, the industry was focused on exploiting opportunities and expanding the production network. This tendency now seems to be transformed by a volatile technological future and by cost pressure. This means that ‘sustainability’ is increasingly important in automobile industry decision-making, but in specific ways.
Upgrading and the geography of the Hungarian automotive industry in the context of the fourth industrial revolution
Authors: Molnár Ernő , Kozma Gábor , Mészáros Márk , Kiss Éva
Published: June 2020

The present study focuses on the geographical investigation of the automotive industry in Hungary that has been integrated into the global production networks as a relevant sector of the reindustrialization in East- Central Europe. The aim of the paper is to reveal the dominant spatial trends in this sector since the economic crisis of 2008, and how these are connected to the issue of upgrading influenced also by digitalization. The analysis is primarily based on the official industrial employment data however other secondary sources are also used. It has been stated that the growth of the Hungarian automotive industry showing to the direction of geographical concentration and expansion is accompanied by the regional stability of the sector. Quality indicators expressing upgrading indicate correlation with the spatiality of car factories and Tier 1 suppliers carrying out more complex activities, but a more significant functional upgrading is only realised in the capital city with increasingly research-development focused profile. Results suggest only moderate upgrading despite the gradual adaptation of Industry 4.0 technologies.
Industry 4.0 in a dualistic manufacturing sector – qualitative experiences from enterprises and their environment, Eastern Hungary
Authors: Nagy Csongor , Molnár Ernő , Kiss Éva
Published: June 2020

Industry 4.0 developing on the basis of digitalisation is gradually transforming production, the conditions of competition and relationships in global industry, affecting its interpretation and expanding its limits. This paper attempts to explore changing economic geographical context with the revaluation of comparative and competitive advantages in a semi-peripheral area of the EU. Based on company interviews, the effects of the new technologies of Industry 4.0 on the dual Hungarian manufacturing industry and its spatial structure are studied, and that whether they contribute to the reduction of duality and geographical polarization. In Eastern Hungary – just like in most areas in East-Central Europe – internationally competitive manufacturing companies emerged almost exclusively as a result of foreign direct investment, while domestic companies are forced into secondary or dependent roles. The empirical research has revealed significant differences in the progress of companies in Industry 4.0. Hungarian-owned companies evolve in a specific way from several aspects and face many difficulties. In contrast, enterprises with foreign interest continue to be the engine of development, driven from the “outside”. Duality is also reflected in the corporate structure, in space and in the realisation of Industry 4.0.
Laboratoires vivants en innovation sociale et coconstruction des connaissances dans les villes : les cas du TIESS (Montréal) et de l’OBISF (Florianópolis)
Authors: Magalhaes Thiago , Camus Annie , Andion Carolina , Tello-Rozas Sonia
Published: June 2020

Le débat sur le rapport entre l’innovation sociale et les villes s’est élargi au cours des dernières décennies. Ce débat met en évidence l’intérêt suscité par les processus de coconstruction des savoirs dans les laboratoires vivants en innovation sociale (LVIS). Cet article a pour objectif de présenter une approche conceptuelle et analytique du traitement des LVIS, ainsi que de décrire et de mettre en perspective deux expériences de mise en oeuvre de LVIS dans les villes : l’Observatoire de l’innovation sociale de Florianópolis (OBISF) au Brésil et Territoires innovants en économie sociale et solidaire (TIESS) à Montréal au Canada. Bien qu’ils émergent dans des réalités et des contextes différents avec des méthodologies de mise en oeuvre spécifiques, qui sont présentées dans le texte, la discussion et l’analyse des deux cas apportent des pistes d’apprentissage sur les défis et les perspectives quant à la coconstruction des connaissances visant à renforcer les dynamiques d’innovation sociale à l’échelle d’une ville.
Aider les aidants : quel espace pour l’innovation sociale dans le soutien aux proches aidants en région?
Authors: Alberio Marco
Published: June 2020

Dans cet article, nous examinons les initiatives et actions locales visant à réduire les inégalités découlant du rôle de proche aidant tant à l’échelle individuelle, collective (de groupes spécifiques, tels que les femmes) que territoriale. Nous présenterons les résultats d’une étude qualitative réalisée au Québec en 2015 auprès de proches aidants d’aînés qui occupent un poste à temps plein dans le marché du travail, ainsi qu’auprès des professionnels leur offrant des services. Plus précisément, nous observerons comment différents acteurs (institutions de la santé, associations, MRC, etc.) essaient de mettre en oeuvre et de conserver une offre de services pour les proches aidants, et comment ces services et ces initiatives peuvent affecter la vie quotidienne des aidants en leur permettant, en premier lieu, de s’identifier comme proches aidants et, plus largement, en influençant leurs trajectoires et expériences de conciliation entre travail, famille et soins.
“Modeli molekula” Drage Grdenića i početci strukturne kemije u Hrvatskoj
Authors: Raos Nenad
Published: June 2020

Početak strukturne kemije u Hrvatskoj može se smjestiti u 1948. godinu kada se Drago Grdenić (1919. – 2018.) vraća sa stručnog usavršavanja na Moskovskom sveučilištu (kod Nesmejanova i Kitajgorodskija) u Zagreb i gdje osniva 1952. Zavod za opću i anorgansku kemiju Prirodoslovno-matematičkog fakulteta. Pedesetih godina uspostavlja se suradnja i s Dorothy C. Hodgkin (Sveučilište u Cambridgeu). Zavod se poglavito bavi spojevima žive, potom molibdena, vanadija te organskim spojevima, posebice azitromicinom i njegovim derivatima. U radu je posebno obrađena Grdenićeva knjiga “Modeli molekula” (1950.), koja je formalno bila napisana kao priručnik za upotrebu kalotnih (Stuartovih) modela tvrtke Učila, no na svoje 142 stranice dala je pregled atomske teorije, stereokemije i strukturne kemije, čime je otvorila put modernoj kemiji u hrvatske škole.
Numerical simulation and comparative analysis of pressure drop estimation in horizontal and vertical slurry pipeline
Authors: Verma Om Parkash , Kumar Arvind , Sikarwar Basant Singh
Published: June 2020

Transportation of solids with water as a carrier in the form of slurry through long length pipelines is widely used by many industries and power plants. The transportation of slurry through vertical pipeline is a challenging task and require modification to overcome the pressure loss and power consumption requirements. In this perspective, numerical simulation of three-dimensional horizontal slurry pipeline (HSPL) and vertical slurry pipeline (VSPL) carrying glass beads solid particulates of spherical diameter 440 µm and density 2,470 kg/m3 is carried out. The 3D computational model for horizontal and vertical slurry pipeline is developed for a pipe of 0.0549 m diameter and analyzed in available commercial software ANSYS Fluent 16. The simulation is conducted by using Eulerian multiphase model with RNG k-ɛ turbulence closure at solid concentration range 10 – 20% (by volume) for mean flow velocities ranging from 1-4 ms-1. It is found that the pressure drop rises for both HSPL and VSPL with escalation in mean flow velocity and solid concentration. The predicted pressure drop in VSPL is found to follow the same pattern as with HSPL but higher in magnitude for all chosen velocity and solid concentration range. The obtained results of predicted pressure drop in HSPL are validated with the available experimental data in the literature. A parametric study is conducted with the aim of visualizing and understanding the slurry flow behavior in HSPL and VSPL. Finally, the results of solid concentration contour, velocity contour, solid concentration profiles, velocity profiles and pressure drop are predicted for both the slurry pipelines.
Wear volume prediction of AISI H13 die steel using response surface methodology and artificial neural network
Authors: Jagota Vishal , Sharma Rajesh Kumar
Published: June 2020

Resistance to wear of hot die steel is dependent on its mechanical properties governed by the microstructure. The required properties for given application of hot die steel can be obtained with control the microstructure by heat treatment parameters. In the present paper impact of different heat treatment parameters like austenitizing temperature, tempering time, tempering temperature is studied using response surface methodology (RSM) and artificial neural network (ANN) to predict sliding wear of H13 hot die steel. After heat treating samples at austenitizing temperature of 1020°C, 1040°C and 1060°C; tempering temperature 540°C, 560°C and 580°C; tempering time 1hour, 2hours and 3hours, experimentation on pin-on-disc tribo-tester is done to measure the sliding wear of H13 die steel. Box-Behnken design is used to develop a regression model and analysis of variance technique is used to verify the adequacy of developed model in case of RSM. Whereas, multi-layer feed-forward backpropagation architecture with input layer, single hidden layer and an output layer is used in ANN. It was found that ANN proves to be a better tool to predict sliding wear with more accuracy. Correlation coefficient R2 of the artificial neural network model is 0.986 compared to R2 of 0.957 for RSM. However, impact of input parameter interactions can only be analysed using response surface method. In addition, sensitivity analysis is done to determine the heat treatment parameter exerting most influence on the wear resistance of H13 hot die steel and it showed that tempering time has maximum influence on wear volume, followed by tempering temperature and austenitizing temperature. The prediction models will help to estimate the variation in die lifetime by finding the amount of wear that will occur during use of hot die steel, if the heat treatment parameters are varied to achieve different properties.
El turismo comunitario como herramienta de desarrollo de los pueblos indígenas: interrogantes en el caso de los shuar del Alto Nangaritza (Ecuador)
Authors: Berlanga Adell María Jesús , Ochoa Ochoa Maritza Elizabeth
Published: June 2020

En este artículo analizamos el turismo comunitario como potencial instrumento de desarrollo para las poblaciones locales. Desde los años ochenta, algunos grupos indígenas de Ecuador han puesto en marcha diversas iniciativas de turismo comunitario. Tras la realización de un prolongado trabajo de campo antropológico en la zona del Alto Nangaritza (Ecuador), nuestro objetivo es mostrar las contradicciones que el turismo comunitario supone para las poblaciones locales, en concreto para las comunidades shuar de la región. Frente a un turismo que pretende empoderar a las comunidades, al desarrollarse en entornos sociales cada vez más desestructurados, esta actividad termina potenciando un individualismo que deteriora progresivamente los valores comunitarios. Esta experiencia nos muestra cómo el turismo comunitario requiere el fortalecimiento previo de las estructuras comunitarias y de la puesta en marcha de un sistema organizativo de control colectivo de los beneficios derivados de esta actividad.
Asociación entre estrés académico, composición corporal, actividad física y habilidad emocional en mujeres universitarias
Authors: Arce Varela Edwin , Azofeifa Mora Christian , Morera Castro María , Rojas Valverde Daniel
Published: June 2020

El presente estudio[1] pretende valorar y determinar la asociación ente las variables del estrés académico, composición corporal, práctica de la actividad física y la habilidad en el manejo de emociones en mujeres universitarias. La muestra estuvo compuesta por 140 mujeres estudiantes de una universidad pública. Se aplicó el inventario de Sisco para el estrés académico, el IPAQ para valorar la actividad física, el cuestionario TMMS de inteligencia emocional y la báscula OMROM HBF-514 para calcular el porcentaje de grasa, peso y tallímetro para la talla y respectiva fórmula para la valoración del IMC. Se aplicó una correlación de Pearson para establecer relaciones entre las variables. Los resultados determinaron una asociación entre el nivel de estrés académico general y variables de composición corporal como el porcentaje de grasa (r= .209; p= .013) y el IMC (r= .198; p= .019), además de relaciones con variables de manejo emocional, tal como la comprensión emocional (r= -.262; p= .002) y la regulación emocional (r= -.379; p= .000). Se concluye que el estrés académico se relaciona con el comportamiento de las variables de control emocional, así como la composición corporal de las estudiantes las cuales podrían influir en la salud integral del ser humano.

[1] El artículo se deriva de un proceso de tesis.
The Civil Society, the Commune, the Parliament: strategies for political promotion of young rural leaders in the province of El Hajeb, Morocco
Authors: FTOUHI Hind , KADIRI Zakari , MAHDI Mohamed
Published: June 2020

Bearing in mind that elections are an auspicious time to raise local political issues, this article analyses the strategies of young men and women leaders inthe province of El Hajeb in Morocco and how they negotiate their leadership roles at the local level. The article is based on observations and semi-structured interviews conducted with young leaders and resource holdersduring the legislative elections of October 2016. While some young people manage to accessmunicipal councils, the present authorsfind evidence to suggest that they cannot become parliamentarians because of being hampered by a lack of social networksthat would broaden their constituency, as well asa lack of material resources to run their election campaigns. For young women, access to parliament is even more difficult, particularly if they fail to obtain a seat through the women’s quota system. Conscious of their limited resources, some young people consider the electoral period as a resource in itself for asserting themselves at the local level and negotiating their political rise. In parallel, they develop electoral strategies to position themselves as local leaders without necessarily running as candidates in legislative elections by choosing to: a) go through several local and regional elective structures; b) strengthen their position within any political party; c) get involved for many years in associational work while attempting to move upwards from the territory of their village to the commune, and then to the province; and d) draw on family notability. The authors’ aim is to show that young leaders are not instrumentalised by potential elected representatives but thatthey carefully negotiate the support they provide to such representatives in order to consolidate their local leadership.
El jerifismo marroquí en la agenda colonial española como factor de legitimidad política, control social e instrumento de propaganda en el norte de Marruecos (1912-1956)
Authors: El Ghazi El Imlahi Said
Published: June 2020

Este artículo analiza los círculos de influencia y poder vinculados al jerifismo en el norte de Marruecos y sus interacciones con la administración colonial española en el marco de la política religiosa puesta en marcha en el protectorado español en Marruecos. Este artículo analiza el encaje de la política religiosa colonialcon la ideología nacional católica dominante en España tras el final de la guerra civil.
La guerra corsaria entre España y la Regencia de Argel (1822-1827)
Authors: Quintana Moraira Juan Luis
Published: June 2020

El objetivo del presente artículo es analizar el desarrollo de la guerra declarada por la Regencia corsaria de Argel a España en el año 1822.  Este conflicto es un gran desconocido para la historiografía española. Por tanto, es nuestro propósito en primer lugar darlo a conocer y, en segundo, valorar su importancia real dentro de la historia española del siglo XIX. Las aportaciones de las Actas del Consejo de Ministros son la fuente perfecta para complementar la correspondencia consular con Argel, y ofrecer una visión completa de los cinco años que duró la guerra corsaria.
Hongos filamentos de relave minero contaminado con plomo y zinc
Authors: Llacza Ladera Henry , Castellanos Sánchez Pedro
Published: June 2020

El objetivo del trabajo fue identificar géneros de hongos filamentosos y determinar la concentración de plomo y zinc en las muestras de relave minero. Aislamos e identificamos hongos filamentosos mediante el método de diluciones seriadas y la técnica de micro cultivo respectivamente, también determinamos metales pesados, pH y el % H de muestras de relave tomadas en tres áreas representativas. Identificamos nueve géneros fúngicos: Penicillium, Aspergillus, Paecylomices, Acremonium, Chrysosporium, Trichoderma, Alternaria, Helicosporium y Geoctrichum de un total de sesenta y dos cepas de hongos filamentosos presentes en el relave minero que presentaba las siguientes características físico químicas: Zinc (Zn) con 8810,4 ppm y plomo (Pb) 3844,4 ppm, el pH tuvo una variación de 1,75 – 7,85 y %H de 10,7 – 2,6.
Optimización del tratamiento de aguas residuales domésticas mediante la implementación del Sistema MBBR - Caylloma - Aquafil
Authors: Reyes Araujo Wilyn
Published: June 2020

Caylloma es un distrito que pertenece a la región Arequipa, está ubicado al sur del Perú, a una altitud promedio de 4310 msnm. Caylloma cuenta con una planta de lodos activados con capacidad para tratar hasta 200 m3/d, pero dado el incremento poblacional y las temperaturas bajas, la actividad bacterial se inhibe, lo cual no garantiza la reducción significativa de la carga orgánica ni de la carga bacterial patogénica. La investigación tiene por objetivo la optimización del funcionamiento de la planta de tratamiento de aguas residuales domésticas. Durante la investigación se desarrolló la evaluación, análisis y optimización del tratamiento de aguas residuales mediante el adicionamiento de Biocarriers a los dos tanques reactores biológicos, lo cual posibilitó que el sistema de lodos activados se transforme en un sistema “Moving Bed Biofilm Reactor” -MBBR-, que consiste en el aumento de la biomasa en los tanques reactores, lo cual permite una mayor degradación de la materia orgánica, para obtener un incremento del 40% de la capacidad total de tratamiento de la planta. Culminado el proceso de optimización actualmente se cuenta con una planta capaz de tratar un caudal promedio de 280 m3/d, que cubre los requerimientos de una población aproximada de 3200 habitantes.
Acciones para reducir diferencias de reconciliación entre el mineral recibido y el enviado a molienda
Authors: Herrera Valdez Johans , Mayorga Rojas Jaime César
Published: June 2020

En toda operación minera es necesario un sistema de reconciliación, el cual permita medir el desempeño de los procesos involucrados en la obtención del producto final, desde los modelos de reservas-recursos, pasando por el diseño de mina, planeamiento de minado, producción minera, hasta culminar en el proceso metalúrgico.

Es mediante la relación entre el mineral recibido (mineral molido) con el mineral enviado a molienda (modelo corto plazo), que resultarán factores de reconciliación para tonelaje, ley y metal. Posterioremente, serán evaluados en un periodo de tiempo mensual, trimestral y/o anual, y servirán de ayuda para afinar los procesos y subprocesos del modelo de corto plazo, asi como el proceso de minado y el proceso metalúrgico. Los resultados se verán reflejados en la reducción de las diferencias de los factores de reconciliación para el tonelaje, ley y metal, esta reducción debe ser soportada en el tiempo; es decir, un sistema de reconciliación minera debe ser parte de la mejora continua en toda la cadena de valor del proceso minero.
Exponential state estimation for competitive neural network via stochastic sampled-data control with packet losses
Authors: Sui Xin , Yang Yongqing , Wang Fei
Published: June 2020

This paper investigates the exponential state estimation problem for competitive neural networks via stochastic sampled-data control with packet losses. Based on this strategy, a switched system model is used to describe packet dropouts for the error system. In addition, transmittal delays between neurons are also considered. Instead of the continuous measurement, the sampled measurement is used to estimate the neuron states, and a sampled-data estimator with probabilistic sampling in two sampling periods is proposed. Then the estimator is designed in terms of the solution to a set of linear matrix inequalities (LMIs), which can be solved by using available software. When the missing of control packet occurs, some sufficient conditions are obtained to guarantee that the exponentially stable of the error system by means of constructing an appropriate Lyapunov function and using the average dwell-time technique. Finally, a numerical example is given to show the effectiveness of the proposed method.
Electroencephalogram spike detection and classification by diagnosis with convolutional neural network
Authors: Misiukas Misiūnas Andrius Vytautas , Rapševičius Valdas , Samaitienė Rūta , Meškauskas Tadas
Published: June 2020

This work presents convolutional neural network (CNN) based methodology for electroencephalogram (EEG) classification by diagnosis: benign childhood epilepsy with centrotemporal spikes (rolandic epilepsy) (Group I) and structural focal epilepsy (Group II). Manual classification of these groups is sometimes difficult, especially, when no clinical record is available, thus presenting a need for an algorithm for automatic classification. The presented algorithm has the following steps: (i) EEG spike detection by morphological filter based algorithm; (ii) classification of EEG spikes using preprocessed EEG signal data from all channels in the vicinity of the spike detected; (iii) majority rule classifier application to all EEG spikes from a single patient. Classification based on majority rule allows us to achieve 80% average accuracy (despite the fact that from a single spike one would obtain only 58% accuracy).
Optimization of the gamma-ray spectrometry counting time based on uncertainties of radionuclides concentration in samples
Authors: Nisti Marcelo Bessa , Máduar Marcelo Francis , Saueia Catia Heloisa Rosignoli , Cavalcante Fernanda , Mazzilli Barbara Paci
Published: June 2020

This paper aims to propose an easy and fast method of optimization of the gamma-ray spectrometry counting time in determining natural radionuclides (Pb-210, Pb-212, Pb-214, Bi-212, Bi-214 and Ac-228) in order to minimize uncertainties in the concentration. The samples were measured by gamma-ray spectrometry with a hyper-pure germanium detector Canberra, 25% relative efficiency, effective resolution of 1.9 keV on the 1332.5 keV 60Co with associated electronics and coupled to a microcomputer. Multichannel Maestro A65-I model was used for spectrum acquisition and peak net area determination, and WinnerGamma/Interwinner 6.01 software was used for gamma-ray spectra analysis and to calculate the concentrations and associated uncertainties.  The counting times used were 86,000 s and 150,000 s.
Relative depth-doses from square and rectangular Y-90 beta applicators used in skin cancer therapy
Authors: De Paiva Eduardo
Published: June 2020

Plaques containing beta-emitting isotopes have several medical applications. In particular, due to the short range of beta particles and the rapid fall off of dose rates they are suitable to be used in small and superficial skin cancer therapy, killing the tumor cells and preserving the underlying healthy structures. The analytical/numerical beta-point dose function formalism is used to a simple estimate of the relative dose rates around square and rectangular beta applicator containing the Yttrium-90 isotope. Maximum differences in relative dose rates along central axis of 13% at 6.6 mm depth and 20% at 5 mm depth were found, respectively, for the square and rectangular plaques as compared with the literature measurements data. Results have also indicated that for both plaques dose rates fall off to 50%  of the reference value at about  2 mm depth; drop to just 10% at 4.5 mm depth, and become  zero from 8 mm on. This fact confirms that these sources are suitable to  be used in superficial skin cancer therapy. The method presented here may be used to estimate the relative dose rates around square and rectangular Y-90 beta applicators in a simple and fast way.
Estudo de eventos operacionais de reatores refrigerados e moderados à água leve pressurizada usando o banco de dados do IRS
Authors: Vital Richard Brandão Nogueira , Vital Tatiane Melo
Published: June 2020

O conhecimento das características de eventos rotineiros em usinas nucleares permite o estabelecimento de ações para evitar a ocorrência, atendendo aos princípios de segurança nuclear cujo objetivo é proteger as pessoas e o meio ambiente dos riscos associados à atividade industrial. Nesse sentido, a existência de um mecanismo de trocas de informações entre organismos de diversas partes do mundo auxilia no processo de tomada de decisões. Com base nos princípios da cultura de segurança que propõe um aperfeiçoamento contínuo das práticas operacionais, este trabalho mostra os resultados de um levantamento realizado em 293 relatórios de eventos, registrados no IRS, de diversas usinas nucleares refrigeradas e moderadas à água leve pressurizada, segundo a codificação das suas características de acordo com o guia de referência. Dessa forma, o objetivo deste trabalho é identificar as principais características dos eventos que ocorreram no período de 2010 a 2019.
A influência da desintegração do radônio transportado pela evapotranspiração das plantas na formação de aerossóis atmosféricos em ambiente de florestas continental e insular
Authors: Motoki Kenji , Campos Thomas Ferreira da Costa , Pastura Valéria Fonseca da Silva , Sichel Susana Eleonora
Published: June 2020

Um dos factores impactante no clima de uma região é à variação dos aerossóis atmosféricos, neste contexto e excluindo-se a atividade antrópica, à produção desses aerossóis estão intimamente relacionada com à presença de íons na atmosfera. Estes aglomerados de moléculas ionizadas são formados pelas ações tanto dos raios Cósmicos espaciais, como das radiações terrestres Gama e Alfa. Esses aglomerados iónicos influenciam a quantidade de aerossóis atmosféricos numa dada região, principalmente em áreas florestais. Isto é devido ao transporte de gás Radônio dissolvido nas águas subterrâneas para o dossel florestal, pela evapotranspiração das plantas, uma vez que a alta densidade do gás radônio (10 kg/m3) exalado dos solos e rochas tem pouco poder de penetração na atmosfera. Neste contexto, apresenta-se um resumo das nossas pesquisas sobre a correlação de partículas iónicas em atmosferas de floresta continental (dunar e caatinga)  e insular (Ilha Trindade) com a variação do teor de Radônio nos dosseis, situadas respectivamente no Nordeste e no Sudeste do Brasil,
A Resolução de Problemas no ensino de Cálculo Diferencial e Integral nos Cursos de Engenharia: uma experiência
Authors: Gomes Diego Monteiro , Stahl Nilson Sergio Peres
Published: June 2020

O artigo apresenta um trabalho realizado utilizando-se da Resolução de Problemas (RP), preconizada por George Polya, para o ensino de Cálculo Diferencial e Integral aos alunos de cursos de Engenharia (Computação, Produção e Mecânica). Nosso objetivo principal foi compreender de que forma a Metodologia de Resolução de Problemas pode contribuir para o aprendizado de Cálculo Diferencial e Integral. Foram realizadas duas atividades contendo situações-problema contextualizadas com temas da Engenharia a fim de promover um ensino significativo na disciplina. A experiência aqui relatada foi desenvolvida com um total de 31 estudantes matriculados na disciplina Cálculo 1 ofertada por duas instituições de ensino superior em Campos dos Goytacazes, RJ. Optamos por uma abordagem qualitativa, utilizando-se na coleta de dados de questionários com perguntas abertas respondidas pelos educandos. Os resultados apontaram importantes benefícios promovidos pelo uso da Metodologia de Resolução de Problemas ao ensino de Cálculo como: trabalho colaborativo, conteúdo contextualizado, facilitação do aprendizado, entre outros.
Acompanhante do paciente com câncer no espaço hospitalar: sentidos atribuídos a sua função
Authors: Polonio Denise Fabiane , Dhein Gisele , Pivatto Cristiane
Published: June 2020

Este estudo objetiva compreender como a função acompanhante do paciente oncológico se constitui e quais as interferências desta no tratamento. A pesquisa foi realizada com 45 sujeitos (15 profissionais, 15 pacientes e 15 acompanhantes de pacientes) de um hospital do interior do Rio Grande do Sul. Os resultados conferem ao acompanhante do paciente as seguintes atribuições: responsabilização pelo suprimento das necessidades básicas do paciente; apoio nas demandas físicas, emocionais, sociais; intermediação das relações entre equipe de saúde e paciente e corresponsabilização pela execução do plano terapêutico definido para o tratamento. Tais representações não foram unânimes, mas evidenciaram que a falta de um sujeito que desempenhe esta função produz no paciente o sentido de desamparo, constituindo limitações ao tratamento. Muitos entrevistados demonstraram desconhecimento da função acompanhante e constatou-se inexistência de protocolo hospitalar que descrevesse a ocupação. A carência foi justificada pela falta de embasamento legal sustentador da temática, apontando assim, a necessidade dessa função ser debatida e integrada à Política Nacional Oncológica.
Teste de envelhecimento acelerado para analisar o vigor de sementes de orelhinha de macaco (Enterolobium schomburgkii Benth)
Authors: Carvalho Cleverson Agueiro , Aguiar Elias Antunes , Teixeira Davair Lopes , Delfino Juscinéia Santos , Nascimento Matheus Matos , Ferreira Regina Félix , Andrade Reginaldo Almeida , Brito Rychaellen Silva
Published: June 2020

O uso de sementes de alto vigor pode ser uma estratégia para reduzir problemas no desenvolvimento de plântulas. Um método eficiente para avaliar a qualidade fisiológica das sementes é o teste de envelhecimento acelerado. O objetivo deste trabalho foi verificar o comportamento fisiológico de sementes de Enterolobium schomburgkii submetidas ao envelhecimento acelerado. No teste, 120 sementes foram divididas em quatro subamostras e colocadas em câmara tipo B.O.D., regulada para manter as temperaturas constantes de 41 ºC e umidade relativa do ar a 100%, nos períodos de 0 (testemunha), 24, 48, 72 e 96 horas. As variáveis analisadas foram: emergência, índice de velocidade de emergência (IVE) e tempo médio de emergência (TME). Ao final da emergência de plântulas, realizou a biometria de plântulas: diâmetro do coleto, comprimento da parte aérea e de raiz. O vigor de sementes de orelhinha-de-macaco pode ser avaliado pelo teste de envelhecimento acelerado, devendo ser conduzido na temperatura de 41 graus pelo período de 72 horas.
O enunciado da juventude digitalizada: youtubers fabricando modos de ser jovem a partir de um dispositivo de juventude
Authors: Rockembach Guilherme Rego , Garré Bárbara Hees
Published: June 2020

O presente trabalho é parte de uma pesquisa de mestrado, produzida no Programa de Pós-Graduação em Educação/MPET, do IFSul. O objetivo desta pesquisa foi analisar a fabricação de uma população dita “Jovem” na atualidade. Pretendeu-se, neste trabalho, investigar algumas construções/modalidades discursivas que vêm atravessando e constituindo essa população dita jovem, principalmente na internet, especificamente no YouTube. Tal análise buscou colocar em movimento algumas ferramentas da análise do discurso Foucaultiana. O trabalho analítico, aqui apresentado, problematiza um enunciado muito potente que auxilia na fabricação do dispositivo de juventude: o enunciado da juventude digitalizada.