bluuebunny/crossref_metadata_2025_split huggingface dataset:
STUDYING THE OPERATION OF A VORTEX HEAT EXCHANGER WITH COUNTERCURRENT CONNECTION SCHEME
Authors: Каногин Илья Андреевич , Косырев Владимир Михайлович , Тарлаковская Елена Александровна 
Published: August 2022

В Дзержинском политехническом институте (филиал) Нижегородского государственного технического университета им. Р.Е. Алексеева на кафедре "Технологическое оборудование и транспортные системы" был разработан вихревой теплообменный аппарат ВТА-600. На данном теплообменном аппарате исследовали работу по изучению коэффициента теплопередачи с направляющими вставками при противоточной схеме подключения.At Dzerzhinsk Polytechnic Institute (branch) of Nizhny Novgorod State Technical University n.a. R.E. Alekseev at the department "Technological equipment and transport systems" the vortex heat-exchange apparatus VHE-600 has been developed. The work on the study of the heat transfer coefficient with guide inserts with a countercurrent connection scheme has been investigated on this heat exchanger.
ANALYSIS AND DECODING OF DIGITAL ORTHOPHOTOPLANES OF ERODED LANDS OF RECLAMATION SYSTEMS
Authors: Зверьков Михаил Сергеевич 
Published: August 2022

В статье рассматривается вопрос анализа и дешифрирования цифровых ортофотопланов эродированных участков мелиоративных систем. В работе приведены примеры с визуальным отображением ирригационной эрозии, пример оценки площади эродированных земель.
The analysis and decoding of digital orthophotoplans of eroded areas of reclamation systems are considered in the article. Examples with a visual display of irrigation erosion, an example of an estimate of the area of eroded lands are given in this research.
Principales efectos de las salvaguardias aplicadas en la economía ecuatoriana en el año 2015
Authors: Díaz Kovalenko Igor Ernesto , Larrea Rosas Katherine Paola , De La Cruz Cruz Alex Gabriel 
Published: August 2022

Ecuador en los años 2012-2014 enfrentó una coyuntura económica adversa reflejada en la balanza comercial como consecuencia de diversos factores externos. Motivo por el cual el gobierno implantó en 2015 una serie de medidas para corregir este desequilibrio y así proteger la dolarización. En este trabajo se analizaron los efectos de la salvaguardia por balanza de pagos impuesta a 2963 subpartidas arancelarias, la cual estableció una sobretasa arancelaria de 5%, 15%, 25% y 45% en términos ad-valorem con el fin de disminuir el desequilibrio de la balanza de pagos proyectados aproximadamente en 2.400 millones de dólares. Para lo cual se desarrolló un estudio del comportamiento de la balanza de pagos y de las importaciones no petroleras gravadas con sobretasa arancelaria. Se analizaron y evaluaron algunas de las principales variables macroeconómicas del país con el fin de contrastar los principales efectos en la economía posteriormente a la medida, entre ellos: la recaudación fiscal, la inflación y las ventas de los sectores agraviados por la salvaguardia, en el contexto de la desaceleración económica interna del año 2015. En este sentido, y considerando que existen varios factores que intervienen en el comercio internacional, se concluye que en relación al año 2014 la medida de salvaguardia por balanza de pagos si logró cumplir con los objetivos propuestos. Contribuyó a disminuir el déficit en de cuenta corriente del país en 45% y a reducir el nivel general de las importaciones no petroleras en 18% precautelando así la liquidez de la economía. Adicionalmente, se evidenció un incremento en la recaudación fiscal de 6%, y en relación a los productos con salvaguradia existión un incremento en la inflación de 0,30% y una disminución en las ventas a nivel nacional de 11%.
Observatorios fuente de información: Conceptos y revisión teórica
Authors: Martínez Albarracín Carlos Eduardo , Bolívar Salgado William Ernesto , Gutiérrez Salgado Nohelia Marcela 
Published: August 2022

En la actualidad la información es una herramienta fundamental para mejorar la competitividad y el éxito en las organizaciones. Los observatorios por medio de la vigilancia tecnológica y la inteligencia competitiva son una fuente de gestión del conocimiento. En Colombia se presentan multiplicidad de temáticas en los observatorios como un valioso apoyo para los tomadores de decisión de las empresas e instituciones de carácter público o privado y de economía mixta. ¿Qué criterios implementan los observatorios como fuentes de información en la búsqueda de datos confiables a sus Stakeholders, teniendo como antecedente que estos particularizan las variables en la creación de nuevos conocimientos, coadyuvando a los actores (público, académico y empresarial) a tomar las mejores decisiones en el desarrollo de las regiones en particular en la zona de influencia de UNIMINUTO centro regional Zipaquirá? Esta ponencia identifica conceptos y hace una revisión teórica de observatorios con el ánimo de argumentar la viabilidad en la creación de un observatorio de inteligencia competitiva en UNIMINUTO centro regional Zipaquirá.
Incidencia de los entornos virtuales de aprendizaje en el desarrollo del pensamiento lógico matemático
Authors: Mendoza Hidalgo Ángel Cesar , Álvarez Franco Rosana Fátima 
Published: August 2022

El presente trabajo de investigación muestra el desconocimiento de los maestros del uso de los entornos virtuales de aprendizaje dentro del proceso de enseñanza aprendizaje el objetivo fundamental del trabajo investigativo fue analizar la incidencia del uso de los entornos virtuales de aprendizaje en el desarrollo del pensamiento lógico matemático en el desempeño académico. La metodología a utilizar es de tipo de investigación bibliográfica, pues se ha realizado investigaciones en libros y publicaciones en internet para detallar las falencias que se está viviendo en el establecimiento educativo. El método utilizado es el científico ya que este el método de estudio sistemático, de la naturaleza que incluye la técnica de observación reglas para el razonamiento y la predicción, ideas sobre la experimentación planificadas. Los Resultados experimentales y teóricos obtenidos constan en la tabla del análisis que fueron analizados e interpretados de manera cualitativamente para tener una visión más real de los resultados. Con las conclusiones se puede evidenciar que, en la unidad educativa existe el recurso suficiente para implementar un módulo de uso de entorno virtuales de aprendizaje para el desarrollo de pensamiento lógico matemático.
Revising Properties of Planet–Host Binary Systems. I. Methods and Pilot Study
Authors: Sullivan Kendall , Kraus Adam L. , Mann Andrew W. 
Published: August 2022

Abstract
To fully leverage the statistical strength of the large number of planets found by projects such as the Kepler survey, the properties of planets and their host stars must be measured as accurately as possible. One key population for planet demographic studies is circumstellar planets in close binaries (ρ < 50 au), where the complex dynamical environment of the binary inhibits most planet formation, but some planets nonetheless survive. Accurately characterizing the stars and planets in these complex systems is a key factor in better understanding the formation and survival of planets in binaries. Toward that goal, we have developed a new Markov Chain Monte Carlo fitting algorithm to retrieve the properties of binary systems using unresolved spectra, unresolved photometry, and resolved contrasts. We have analyzed eight Kepler Objects of Interest in M-star binary systems using literature data, and have found that the temperatures of the primary stars (and presumed planet hosts) are revised upward by an average of 200 K. The planetary radii should be revised upward by an average of 20% if the primary star is the host, and 80% if the secondary star is the planet host. The average contrast between stellar components in the Kepler band is 0.75 mag, which is small enough that neither star in any of the binaries can be conclusively ruled out as a potential planet host. Our results emphasize the importance of accounting for multiplicity when measuring stellar parameters, especially in the context of exoplanet characterization.
Intracluster Magnetic Filaments and an Encounter with a Radio Jet
Authors: Rudnick L. , Brüggen M. , Brunetti G. , Cotton W. D. , Forman W. , Jones T. W. , Nolting C. , Schellenberger G. , van Weeren R. 
Published: August 2022

Abstract
Thin synchrotron-emitting filaments are increasingly seen in the intracluster medium (ICM). We present the first example of a direct interaction between a magnetic filament, a radio jet, and a dense ICM clump in the poor cluster A194. This enables the first exploration of the dynamics and possible histories of magnetic fields and cosmic rays in such filaments. Our observations are from the MeerKAT Galaxy Cluster Legacy Survey and the LOFAR Two-Meter Sky Survey. Prominent 220 kpc long filaments extend east of radio galaxy 3C40B, with very faint extensions to 300 kpc, and show signs of interaction with its northern jet. They curve around a bend in the jet and intersect the jet in Faraday depth space. The X-ray surface brightness drops across the filaments; this suggests that the relativistic particles and fields contribute significantly to the pressure balance and evacuate the thermal plasma in a ∼35 kpc cylinder. We explore whether the relativistic electrons could have streamed along the filaments from 3C40B, and present a plausible alternative whereby magnetized filaments are (a) generated by shear motions in the large-scale, post-merger ICM flow, (b) stretched by interactions with the jet and flows in the ICM, amplifying the embedded magnetic fields, and (c) perfused by re-energized relativistic electrons through betatron-type acceleration or diffusion of turbulently accelerated ICM cosmic-ray electrons. We use the Faraday depth measurements to reconstruct some of the 3D structures of the filameGnts and of 3C40A and B.
Cosmological Simulations of the Intergalactic Medium Evolution. III. SPH Simulations
Authors: Martel Hugo , Côté Benoit , Drissen Laurent 
Published: August 2022

Abstract
We have developed a new numerical algorithm to study the joint evolution of galaxies and the intergalactic medium (IGM) in a cosmological context, with the specific goal of studying the deposition and dispersion of metals in the IGM. This algorithm combines a standard gasdynamical algorithm to simulate the evolution of the IGM, a semi-analytical model to describe the evolution of galaxies, and prescriptions for galaxy formation, accretion, mergers, and tidal disruption. The main goal in designing this algorithm was performance. In its current version, the algorithm can simulate the evolution of cosmological volumes containing thousands of galaxies in a few days, using between 12 and 32 processors. This algorithm is particularly suited for parameter surveys (both numerical parameters and physical parameters) since a large number of simulations can be completed in a fairly short amount of time. Furthermore, the algorithm provides a platform for the development and testing of new treatments of subgrid physics, which could then be implemented into other algorithms. In this paper, we describe the algorithm and present, for illustration, two simulations of the evolution of a (20 Mpc)3 cosmological volume containing ∼1200 galaxies at z = 0.
Discovery of a 584.65 Hz Burst Oscillation in the Low-mass X-Ray Binary 4U 1730–22
Authors: Li 李 Zhaosheng 兆升 , Yu 余 Wenhui 文辉 , Lu 路 Yongqi 永琪 , Pan 潘 Yuanyue 元月 , Falanga Maurizio 
Published: August 2022

Abstract
Type-I X-ray burst oscillations are powered by thermonuclear energy released on the neutron star (NS) surface in low-mass X-ray binaries (LMXBs), where the burst oscillation frequencies are close to the NS spin rates. In this work, we report the detection of oscillation at 584.65 Hz during the cooling tail of type-I X-ray bursts observed from the accreting NS LMXB 4U 1730–22 on 2022 March 20, by the Neutron star Interior Composition Explorer telescope. The oscillation signal showed a strong Leahy power, P
m ∼ 54.04, around 584.65 Hz, which has single-trial and multiple-trial confidence levels of 7.05σ and 4.73σ, respectively. The folded pulse profile of the oscillation in the 0.2–10 keV band showed a sinusoidal shape with the fractional rms amplitude of (8.0 ± 1.1)%. We found the oscillation frequency showed insignificant upward drifting, i.e., less than 0.3 Hz, during the cooling tail, similar to the behavior appearing in accreting millisecond X-ray pulsars (AMXP), and indicate the source could be an AMXP spinning at 1.71 ms.
A New Cold Stream near the Southern Galactic Pole
Authors: Yang Yong , Zhao Jing-Kun , Xue Xiang-Xiang , Ye Xian-Hao , Zhao Gang 
Published: August 2022

Abstract
We report the discovery of a cold stream near the southern Galactic pole (dubbed as SGP-S) detected in Gaia Early Data Release 3. The stream is at a heliocentric distance of ∼9.5 kpc and spans nearly 58° by 0.°6 on sky. The color–magnitude diagram of SGP-S indicates an old and metal-poor (age ∼12 Gyr, [M/H] ∼ −2.0 dex) stellar population. The stream’s surface brightness reaches an exceedingly low level of Σ
G
≃ 36.2 mag arcsec−2. Neither extant globular clusters nor other known streams are associated with SGP-S.
SNP4OrphanSpecies: A bioinformatics pipeline to isolate molecular markers for studying genetic diversity of orphan species
Authors: Penaud Benjamin , Laurent Benoit , Milhes Marine , Noüs Camille , Ehrenmann François , Dutech Cyril 
Published: August 2022

For several decades, an increase in disease or pest emergences due to anthropogenic introduction or environmental changes has been recorded. This increase leads to serious threats to the genetic and species diversity of numerous ecosystems. Many of these events involve species with poor or no genomic resources (called here "orphan species"). This lack of resources is a serious limitation to our understanding of the origin of emergent populations, their ability to adapt to new environments and to predict future consequences to biodiversity. Analyses of genetic diversity are an efficient method to obtain this information rapidly, but require available polymorphic genetic markers.
We developed a generic bioinformatics pipeline to rapidly isolate such markers with the goal for the pipeline to be applied in studies of invasive taxa from different taxonomic groups, with a special focus on forest fungal pathogens and insect pests. This pipeline is based on: 1) an automated de novo genome assembly obtained from shotgun whole genome sequencing using paired-end Illumina technology; 2) the isolation of single-copy genes conserved in species related to the studied emergent organisms; 3) primer development for multiplexed short sequences obtained from these conserved genes. Previous studies have shown that intronic regions of these conserved genes generally contain several single nucleotide polymorphisms within species. The pipeline's functionality was evaluated with sequenced genomes of five invasive or expanding pathogen and pest species in Europe (Armillaria ostoyae (Romagn.) Herink 1973, Bursaphelenchus xylophilus Steiner & Buhrer 1934, Sphaeropsis sapinea (fr.) Dicko & B. Sutton 1980, Erysiphe alphitoides (Griffon & Maubl.) U. Braun & S. Takam. 2000, Thaumetopoea pityocampa Denis & Schiffermüller, 1775). We successfully isolated several pools of one hundred short gene regions for each assembled genome, which can be amplified in multiplex. The bioinformatics pipeline is user-friendly and requires little computational resources. This easy-to-set-up and run method for genetic marker identification will be useful for numerous laboratories studying biological invasions, but with limited resources and expertise in bioinformatics.
Ecology and Conservation of the Dutch Ground Beetle Fauna - Lessons from 66 Years of Pitfall Trapping
Authors: Mossakowski Dietrich 
Published: August 2022

Carl H. Lindroth was the first to present a comprehensive survey with his fundamental work on the Fennoscandian carabid beetles, covering all ecological aspects. The knowledge of the Dutch carabid beetle fauna is also exceptionally good what is especially thanks to Piet den Boer’s initiative and the work of his followers.
Apart from the comprehensive book by Hans Turin (2000) on The Netherlands carabid beetles, I only see major publications on parts of a country or certain aspects, respectively, such as Trautner et al. (2017) on carabids of a German Federal State, Baden-Württemberg or Paill (2009) on endemic species in Austria.
Turin et al. (1991) analysed the data bank on Dutch carabid beetles on the basis of 1.616 year samples from the period 1953-1983. The present book contains updated and extended analyses of the extraordinary huge data bank on Dutch carabid beetles of 4.363 pitfall trap year samples with more than 3 million specimens covering additionally the period 1984-2018.
Du post-conflit au développement, une question de temps ?
Authors: Saiget Marie , Grajales Jacobo 
Published: August 2022

Cet article étudie la transformation des politiques du foncier rural dans le contexte ivoirien. Ce domaine d’intervention a en effet changé depuis la fin du conflit armé en 2011, quand il a été défini par des acteurs de l’aide comme relevant de l’intervention « post-conflit », avant d’être redéfini comme un vecteur de développement économique et de l’« émergence ». Cette contribution analyse les multiples jeux bureaucratiques, à Abidjan comme chez les bailleurs, à l’Agence française de développement, l’Union européenne et la Banque mondiale. Elle met en lumière la manière dont les qualifications et requalifications de l’aide au développement fonctionnent comme des instruments d’orientation de l’action publique sur le foncier. Les séquences temporelles ainsi définies offrent à la fois des cadres de référence et des ressources pour justifier et maîtriser le cours de l’action. Cette recherche est basée sur sept terrains d’enquête conduits en Côte d’Ivoire et à Paris depuis 2016.
Application of SARIMA Model on Forecasting Wholesale Prices of Food Commodities in Tanzania: A Case of Maize, Rice and Beans
Authors: Joseph Agnes B. , Mpogolo Godfrey Edward 
Published: August 2022

This research used a time series model called the Seasonal Autoregressive Integrated Moving Average (SARIMA) technique to model and forecast wholesale prices of Tanzania`s key food crops, notably maize, rice, and beans. The SARIMA model was selected due to its ability of fitting data with seasonality. Monthly wholesale prices data of the three crops between February 2004 to October 2021 in Tanzania were retrieved from the website of the Bank of Tanzania (BoT), resulting in 213 observations on each crop. The data from February 2004 to October, 2020 were used to fit a SARIMA model and data of November 2020 to October 2021 were used to validate the model. The results show that SARIMA (0,1,2) (1,0,1)12, SARIMA (0,1,0) (1,1,1)12 and SARIMA (0,1,0) (0,1,1)12 are the most suitable models for forecasting wholesale prices of maize, rice and beans respectively. The model’s accuracy was tested using Mean Absolute Percent Error (MAPE), and the results were found satisfactory. The results reveal that maize, rice, and beans will all have higher peak prices in February 2022, with TZS 54,083/=, TZS 167,258/=, and TZS 180,117.68/= per 100kg, respectively. Therefore, SARIMA (0,1,2)(1,0,1)12, SARIMA (0,1,0)(1,1,1)12 and SARIMA (0,1,0) (0,1,1)12 models could serve as a useful tool for modelling and forecasting monthly wholesale prices of maize, rice and beans respectively in Tanzania.
Impact of Tax Audit on Burden of Proof on Examined Returns of Income Among Small and Medium Enterprises in Dar es Salaam City, Tanzania
Authors: Chachalika Kassim Athuman 
Published: August 2022

The study examined the impact of tax audits on the burden of proof on examined returns of income among SMEs in Dar es Salaam City in Tanzania. Specifically, the study intended to examine how the issued notice of deficiencies affects the burden of proof on taxpayers on the production of evidence and persuasiveness to the tax authority. The study applied a crosssectional design and quantitative and qualitative approach, where, data were collected from targeted respondents and analysed quantitatively to establish the relationships between variables. Data were analysed through a descriptive statistical method and presented in frequency tables. Primary and secondary data were collected through a combination of methods including key informant interviews, structured questionnaires, and focus group discussions. The study revealed that education level has a greater impact on tax audit notice of deficiencies and taxpayers’ burden of proof from the examined return of income point of view. The education level of the respondents indicates that 41 (60%) out of 68 of the respondents had a primary education level. The study concluded that understanding the impact of a tax audit with respect to notice of deficiencies, the burden of proof, and audited taxpayers’ perception from the examined returns of income can influence tax compliance once taxpayers have basic tax laws education. Specifically, by understanding better why taxpayers usually bear the burden of proof, the tax authority will be in a position to use appropriate measures that will bring in balance the burden born by taxpayers on the production of evidence and persuasiveness to tax officers. The study recommends that tax authorities with other stakeholders such as tax consultants, accountants, and auditors should ensure taxpayers are equipped with basic tax laws education from their childhood, at primary schools, and post-primary schools.
Effects of Credit Management Practices on Performance of Women Owned SMEs in Morogoro Municipality, Tanzania
Authors: Mutalemwa D.F. , Makindara J.R. 
Published: August 2022

This paper determined the effects of credit management practices on the performance of women owned SMEs in Morogoro Municipality. Data were collected from 120 women which included both credit and non-credit recipients. A purposeful sampling procedure was employed to select the study district and three wards whereby two streets were selected from each ward randomly. The women’s respondents were then selected randomly from each street. Descriptive analysis was used to compute the enterprise performance status of the respondents. The results indicate that 55 percent of the women respondents were credit beneficiaries while 45 percent were not. Among those who received credit, 68 percent used the whole credit to invest in the same business; about 21 percent used 50 percent of the credit received to invest in other businesses besides the core ones and about 50 percent used the credit in non-business purposes. Moreover, about 11 percent of the credit recipients used the whole loan given (100%) in other activities such as family parties and paying school fees. An independent t-test was run to determine whether there is a significance difference in performance among women with and without credits. The performance indicators were all significant in terms of asset value, number of employees, monthly sales, and gross margin at p>0.05. The findings show that credit availability influenced the performance of women owning SMEs. The findings also show further that women who received credit and invest the whole of it in the same business were performing better compared to non-credit recipients. It is therefore concluded that if credit is available and women use the whole of it in investing within the business, their SMEs performance will improve. It is recommended that women owning SME’s should be encouraged to take the available credits which have competitive interest rates and deploy it in their business in order to enhance performance of their enterprises.