bluuebunny/crossref_metadata_2025 huggingface dataset:
Photosynthesis of Physalis peruviana under different densities of photons and saline stress
Authors: Figueiredo Francisco Romário Andrade , Ribeiro João Everthon da Silva , Nóbrega Jackson Silva , Celedônio Wilma Freitas , Fátima Reynaldo Teodoro de , Ferreira Jean Telvio Andrade , Dias Thiago Jardelino , Albuquerque Manoel Bandeira de
Published: January 2022

Physalis peruviana L. is a solanacea that has been gaining prominence due to its fruits presenting good acceptance in the national and international market. However, several abiotic factors, such as salinity, can cause physiological disturbances in plants, and these changes may be of greater or lesser intent according to species. Therefore, the objective of the present work was to evaluate the physiological behavior of P. peruviana submitted to different fluxes of photosynthetically active photons (PPFD) and saline stress. The experimental design was a randomized block design with three saline levels (ECw) (0.5, 2.75 and 5.00 dS m-1) with four replications. Gas exchange measurements were performed with a portable infrared gas analyzer. Liquid CO2 assimilation, stomatal conductance, internal CO2 concentration, water use efficiency and instantaneous carboxylation efficiency were measured. Data were subjected to analysis of variance by F test and in cases of significance applied to regression analysis. The increase in PPFD provided reductions in stomatal conductance up to the density of approximately 400 μmol m-2s-1, being more pronounced in ECw of 2.75 and 5.0 dS m-1. The maximum CO2 assimilation rates in the three salinities are different according to the PPFD. The salinity of irrigation water reduced the quantum efficiency of photosynthesis in P. peruviana plants.
Effect of heavy metals on stem anatomical characteristics of Trapa natans L. from Skadar Lake (Montenegro)
Authors: Petrović Dragana , Krivokapić Slađana , Anačkov Goran , Luković Jadranka
Published: January 2022

This study aimed to analyze stem anatomical characteristics of Trapa natans from five Skadar Lake locations (L1 - Milovića bay, L2 – inflow of the Morača river, L3 - Kamenik, L4 - Grmožur, L5 - Lipovik) with different concentrations of Cu, Mn, Zn, Co and Pb, during the summer period of the year 2012. Cross sections of stem were made using cryotechnic procedure. For all analyzed quantitative anatomical parameters, the minimum values at the location L2 were recorded, with the presence of maximum content for all investigated metals in stem of Trapa natans. On the other hand, except for cobalt, at the location L4 the minimum concentration for all investigated metals were recorded. Plants collected from this location have the largest average values of the most measured anatomical parameters. The results of Discriminant Analysis showed that plants from different location could be clearly classified into three groups according to their stem quantitative anatomical characteristics which corresponds with heavy metals content. Our research also showed that there is no statistically significant correlation between the content of most investigated metals (Co, Cu, Pb and Zn) and the values of anatomical parameters. Statistically significant negative correlation was found between Mn content in stem and values of two anatomical characters (stem cross-sectional area and Mn content, r = - 0.88; p < 0.05; number of hypodermal cell layers and Mn content, r = - 0.90; p < 0.05).
Yield and phosphorus use efficiency of carrot cultivars
Authors: Modesto de Jesus Priscila  Maylana , Grangeiro Leilson Costa , Lima de Sousa Valdívia de Fatima , Alves da Silva Gerlani , Rebouças da Silva Luiz Ricardo , De Oliveira Rodrigues Gardênia Silvana
Published: January 2022

Phosphate fertilization is indispensable for carrot cultivation, as it contributes to plant development, formation of marketable roots and higher yields. In this context, the objective of this study was to evaluate the production and nutritional efficiency of carrot cultivars under phosphate fertilization. The experiments were carried out from July to November 2016 and from June to October 2017, at the Rafael Fernandes experimental farm, District of Alagoinha, Mossoró, RN, Brazil. The experimental design was in randomized blocks, in a 4×4 factorial scheme with 4 replicates. The treatments consisted of the combination of carrot cultivars (Brasília, Planalto, Suprema and Nativa) with phosphorus (P) doses (0, 90, 180 and 270 kg ha-1 P2O5). The characteristics analyzed were: P content in the diagnostic leaf, plant dry matter, plant height, marketable and total yields, and the classification of cultivars for efficiency and response to phosphate fertilization. The increments promoted by phosphate fertilization were 64% in plant height, 444% in dry matter and 284% in marketable yield. The maximum marketable yield was obtained with doses from 186.8 to 243.5 kg ha-1, depending on the cultivar. The Native cultivar was classified as more efficient in the use of P.
Comparisons between intake values observed and predicted by nutritional systems for confined nellore cattle
Authors: Ferreira Aline Maria Soares , Pedro da Silva Simone , De Faria Carina Carina Ubirajara , Mendes Egleu Diomedes Marinho , Felipe Ester Ferreira
Published: January 2022

This study compared the dry matter intake (DMI) of Nellore heifers and bulls in the feedlot, predicted by the BR-Corte (2010 and 2016) and NRC (2000) nutritional systems. Hence, two experiments were conducted in a completely randomized design. The first one used 47 Nellore bulls, not castrated, with an average initial weight of 413 kg, and 19 months of age. The second experiment used 24 Nellore heifers with an average initial weight of 300 kg and 23 months of age. The accuracy and approximation of the DMI estimates by the nutritional systems were adjusted with the simple linear regression model and the root mean square error of prediction (RMSEP). The DMI was 8.06 kg day-1 for Nellore heifers and 11.54 kg day-1 for bulls, which are higher than the values ​​ predicted by the nutritional systems. The NRC (2000) and BR-Corte (2010 and 2016) underestimated DMI in 20.84, 20.09, and 19.35% for heifers and 28.07, 16.20, and 11.78% for bulls, respectively. It was concluded that the BR-Corte 2010 and 2016 were the most suitable models to estimate the DMI of Nellore heifers and bulls for higher precision and accuracy.
Efficacy of essential oils in the management of soft rot caused by Pectobacterium aroidearum in lettuce
Authors: Barroso Karol Alves , Bastos de Oliveira Xênia , Ferreira Queiroz Márcia , De Oliveira Almeida Camila , Prates Lorenzo Vitor , Cartaxo Ramalho Vilar Flávia , Domingos da Paz Cristiane , Peixoto Ana Rosa
Published: January 2022

Lettuce is susceptible to several diseases, especially soft rot caused by bacteria of the genus Pectobacterium. Due to the adaptability of this pathogen and the lack of disease control registered for the crop, the objective of this work was to evaluate the effects of essential oils in the management of soft rot caused by P. aroidearum in lettuce. The study was developed at the Universidade do Estado da Bahia, Juazeiro, BA, Brazil, and the essential oils (EOs) of orange, bergamot, lemongrass, palmarosa, citronella, cloves, tea tree, rosemary, sage, and ginger were used in concentrations of 0.25; 0.5; 0.75 and 1.0% to assess the in vitro growth inhibition of the bacterium. Subsequently, the curative effects of the disease were evaluated by applying the EOs that obtained the best results in vitro in lettuce plants of the susceptible variety “Mônica”. The treatments were applied, via spraying, 12 hours after inoculation using the bite method with bacterial suspension. The best in vivo treatment was selected to assess its preventive and curative activity, as well as to find the ideal concentration for reducing epidemiological variables and chromatographic characterization. The EOs of palmarosa, sage, citronella, lemongrass, and cloves (0.25%), and that of sage (0.75%), inhibited bacterial growth in vitro. The EO of salvia showed the best results in vivo, inhibiting the growth of the disease in concentrations of 0.50 and 0.75%, so it was selected for the preventive and curative control tests alone. The preventive treatment was not efficient for the management of soft rot in lettuce, however, from the regression analysis, a concentration of 0.64% of the salvia EO was found as a potential for curative control of this bacteriosis, as it reduces the incidence and severity of the disease. Linalyl acetate and linalool were found in higher concentrations in the chromatographic analysis. These components, probably, conferred the bactericidal capacity of the EO of sage, being potential for the use in the control of P. aroidearum in lettuce.
Certain results on trans-paraSasakian 3-manifolds
Authors: Kumara H. Aruna , Venkatesha V. , Naik Devaraja Mallesha
Published: January 2022

Let M be a trans-paraSasakian 3-manifold. In this paper, the necessary and sufficient condition for the Reeb vector field of a trans-paraSasakian 3-manifold to be harmonic is obtained. Also, it is proved that the Ricci operator of M is invariant along the Reeb flow if and only if M is a paracosymplectic manifold, an α-paraSasakian manifold or a space of negative constant sectional curvature.
Reducing total annual cost and CO2 emissions in batch distillation for separating ternary wide boiling mixtures using vapor recompression heat pump
Authors: Gandu Radhika , Burolia Akash Kumar , Ambati Seshagiri Rao , Gara Uday Bhaskar Babu
Published: January 2022

This paper presents cost-effective heat pump assisted vapor recompression (VRC) design algorithms for the separation of ternary wide boiling mixture in batch distillation in order to reduce total annual cost (TAC) and carbon dioxide (CO2) emissions. A minimum TAC and CO2 is required by the batch distillation process industry for any investments in heat integrated systems, such as VRC. Consequently, the design conditions for implementing VRC should be chosen such that the energetic performance is maximum at minimum TAC. The model system selected in this paper is an application involving high temperature lift, that is, hexanol–octanol–decanol ternary wide boiling mixture. First, a systematic simulation algorithm was developed for conventional multicomponent batch distillation (CMBD) and single-stage vapor recompressed multicomponent batch distillation (SiVRMBD) to determine the optimal number of stages based on the maximum TAC savings. The SiVRMBD saves more energy and TAC than CMBD. However, SiVRMBD has a high compression ratio (CR) throughout the operation, which is not practically feasible for the batch distillation processing. Second, in order to increase the performance and minimize the SiVRMBD weakness, a novel optimal multi-stage vapor recompression algorithm was proposed to operate at the lowest possible CR (<3.5) throughout the batch operation while also conserving the most TAC. Overall, the findings suggest that the proposed optimal multi-stage VRC reduces TAC and CO2 emissions significantly when compared to CMBD. Finally, the influence of the different feed compositions on VRC performance is also studied.
Prescribing Ricci curvature on homogeneous spaces
Authors: Lauret Jorge , Will Cynthia E.
Published: January 2022

The prescribed Ricci curvature problem in the context ofG-invariant metrics on a homogeneous spaceM=G/K{M=G/K}is studied. We focus on the metrics at which the mapg↦Rc⁡(g){g\mapsto\operatorname{Rc}(g)}is, locally, as injective and surjective as it can be. Our main result is that such property is generic in the compact case. Our main tool is a formula for the Lichnerowicz Laplacian we prove in terms of the moment map for the variety of algebras.
Monocyte chemoattractant protein-1 levels are associated with major depressive disorder
Authors: Proma Maliha Afrin , Daria Sohel , Nahar Zabun , Ashraful Islam Sardar Mohammad , Bhuiyan Mohiuddin Ahmed , Islam Md. Rabiul
Published: January 2022

Objectives

Major depressive disorder (MDD) is a distressing condition characterized by persistent low mood, loss of interest in daily activities. Researchers consider several biological, psycho-social, and genetic factors are involved in depression. The present study aimed to investigate the serum levels of monocyte chemoattractant protein-1 (MCP-1) in MDD patients to explore its role in depression.

Methods

This case-control study recruited 114 MDD patients and 106 healthy controls (HCs) matched by age and gender. A specialized psychiatrist diagnosed the cases and evaluated the controls based on the diagnostic and statistical manual for mental disorders, 5th edition. We quantified serum MCP-1 levels using commercially available enzyme-linked immune sorbent assay kits. Also, we applied the Hamilton depression rating scale (Ham-D) to measure the severity of depression.

Results

We observed the decreased levels of serum MCP-1 in MDD patients compared to HCs. Also, we obtained a significant negative correlation between serum MCP-1 levels and Ham-D scores. Moreover, female MDD patients with higher Ham-D scores exhibited lower serum MCP-1 levels. The receiver operating characteristic analysis demonstrated the good diagnostic value of MCP-1 with the area under the curve at 0.837.

Conclusions

The depression-related alteration of serum MCP-1 may be more complicated than the current assumption and depends on the characteristics of the individual patients. Our study suggests that the serum MCP-1 levels might involve in the pathophysiology and mechanism of MDD. The present findings, along with the diagnostic evaluation, might be used to evaluate depressive patients.
Political Domination and Economic Dispossession of Farmers: The Case of Land Acquisition for Special Economic Zones in India
Authors: Misra Kartik
Published: January 2022

Involuntary acquisition of agricultural land for setting up of Special Economic Zones (SEZ) in India benefited the elite at the expense of small farmers who were and are the dominant voting group. Consequently, such policies were met with fierce political resistance by farmer organizations across the country. However, these movements have a mixed record against land acquisition attempts by the state and large corporations. This paper presents a simple model of the political conflict between the elite and small farmers over land acquisition to show how the elite may mobilize resources to ensure that their economic interests are protected even in democracies where they are in electoral minorities. We test the predictions of our model using a new data set compiled on SEZ projects that failed to acquire land because of farmer agitations. We show that factors like inequality in land ownership (class) and hierarchies of caste hinder the ability of small and marginal farmers to successfully organize collective action against land acquisition. Further, the division of votes along caste and ethnic lines also dilutes the potential for successful farmer agitations against land acquisition. Finally, we find that historically marginalized communities also resist land acquisition even when they face greater caste-based discrimination in the traditional village economy.
Religion, Religious Textbooks and Territorialisation of Sinhala Buddhist Ethno-nationalism in Sri Lanka
Authors: Senanayake Harsha
Published: January 2022

The idea of ‘homelanď performed a central role in nationalist debates, and particularly majority/ minority societies exercise the concept of the homeland, religion and religious texts to shaped their nationalist discourse and claimed their rights over a given territory. In this context, nationalism and religion can be understood as contested terms, particularly in third world nation-states including countries like Sri Lanka, which has suffered from the three-decades-long civil war between Sinhala-Buddhist majoritarian government and minority-Tamil community based separatist movement of LTTE. The formation of Sinhala- Buddhist nationalism carries interesting links with the religion and religious textbooks and based on these Buddhist religious and historical claims the majoritarian political mindset of the Sinhala community believes Sri Lanka is their homeland, and other minority communities are alien for the society. The contemporary, political and security discourse of Sri Lanka has strongly brought these Buddhism and religious texts to claim rights over the territory and galvanised ‘Sinhala-Buddhist rights’ over the popular nationalist movement. In this context, the paper discusses ‘how and why Sinhala nationalist movement strongly shaped by the Buddhist religious values and books’ and the rationale behind the link between Sinhala nationalism and Buddhist religion based on the conceptual framework of “Geopiety.”
Structure and magnetic properties of Bi-doped calcium aluminosilicate glass microspheres
Authors: Majerová Melinda , Škrátek Martin , Hruška Branislav , Dvurečenskij Andrej , Švančárek Peter , Prnová Anna , Kraxner Jozef , Bruneel Els , De Buysser Klaartje , Galusek Dušan
Published: January 2022

Bi-doped CaO–Al2O3–SiO2 glass microspheres with Ca2Al2SiO7 (gehlenite) composition were prepared by combination of solid-state reaction and flame synthesis. The concentration of Bi was 0.0, 0.5, 1 and 3 mol%. The chemical composition of prepared glass microspheres was determined by X-ray fluorescence (XRF). The structural and magnetic properties of prepared glass microspheres and their polycrystalline analogues were studied by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Raman spectroscopy and SQUID magnetometry. The closer inspection of glass microspheres surface by SEM confirmed smooth surface and revealed no features indicating presence of crystalline phases. All Bi-doped microspheres are X-ray amorphous, however in case of undoped microspheres XRD detected traces of crystalline gehlenite. XRD analysis of samples crystallized at 1273 K for 10 h revealed the presence of gehlenite as the main crystalline phase. The presence of gehlenite in crystallized samples were also confirmed by Raman spectroscopy. All samples (glass microspheres and their crystalline analogues) showed diamagnetic or weak ferromagnetic behavior at room temperature, whereas paramagnetic or weak ferromagnetic behavior was observed at 2 K.
Deplay BSDEs driven by fractional Brownian motion
Authors: Aidara Sadibou , Sane Ibrahima
Published: January 2022

This paper deals with a class of deplay backward stochastic differential equations driven by fractional Brownian motion (with Hurst parameter H greater than

1
2

{\frac{1}{2}}

). In this type of equation, a generator at time t can depend not only on the present but also the past solutions. We essentially establish existence and uniqueness of a solution in the case of Lipschitz coefficients and non-Lipschitz coefficients. The stochastic integral used throughout this paper is the divergence-type integral.
Modern Geográfia: múlt, jelen és jövő – egy szakmai folyóirat elmúlt 15 évének tükre
Authors:   PTE Földrajzi és Földtudományi Intézet, Alpek B. Levente , Tésits Róbert ,   PTE Földrajzi és Földtudományi Intézet, Lempek Melissza Zita ,   PTE Földrajzi és Földtudományi Intézet, Kókay Péter ,   PTE Egyetemi Könyvtár és Tudásközpont, Szabó Róbert ,   PTE Földtudományok Doktori Iskola
Published: January 2022

The scholarly journal Modern Geográfia has been providing a publication platform for researchers of geography and, more broadly, the natural and social sciences for 15 years now. Effective dissemination of scientific results is of paramount importance in broadening the horizons of both basic and applied research. The aim of the present study is to explore the role of Modern Geográfia in the above process, thus to outline its profile and possible directions for its further development. The applied method can be an effective help in formulating the portfolio and the strategic goals of other scholarly journals. The methodological basis of the research is provided by the statistical analysis of the journal based on a primary database containing several indicators. The results cover the number of articles published in the journal, in addition to the dynamics of the publications, its profiling, the presentation of the affected topics, and the evaluation of the trends of recent years. In addition to all this, the study reviews the team of professionals that has given content to the journal with the results of its scientific research.
Validity and Test-Retest Reliability of the Vmaxpro Sensor for Evaluation of Movement Velocity in the Deep Squat
Authors: Feuerbacher Joshua F. , Jacobs Mats W. , Dragutinovic Boris , Goldmann Jan-Peter , Cheng Sulin , Schumann Moritz
Published: January 2022

Feuerbacher, JF, Jacobs, MW, Dragutinovic, B, Goldmann, J-P, Cheng, S, and Schumann, M. Validity and test-retest reliability of the Vmaxpro sensor for evaluation of movement velocity in the deep squat. J Strength Cond Res 37(1): 35–40, 2023—We aimed at assessing the validity and test-retest reliability of the inertial measurement unit-based Vmaxpro sensor compared with a Vicon 3D motion capture system and the T-Force sensor during an incremental 1-repetition maximum (1RM) test and at submaximal loads. Nineteen subjects reported to the laboratory for the 1RM test sessions, whereas 15 subjects carried out another 3 sessions consisting of 3 repetitions with 4 different intensities (30, 50, 70, and 90% of 1RM) to determine the intra- and interday reliability. The Vmaxpro sensor showed high validity (Vicon: R
2 = 0.935; T-Force: R
2 = 0.968) but an overestimation of the mean velocities (MVs) of 0.06 ± 0.08 m·s−1 and 0.06 ± 0.06 m·s−1 compared with Vicon and T-Force, respectively. Regression analysis indicated a systematic bias that is increasing with higher MVs. The intraclass correlation coefficients (ICCs) for Vmaxpro were moderate to high for intraday (ICC: 0.662–0.938; p ≤ 0.05) and for interday (ICC: 0.568–0.837; p ≤ 0.05) reliability, respectively. The Vmaxpro is a valid and reliable measurement device that can be used to monitor movement velocities within a training session. However, practitioners should be cautious when assessing movement velocities on separate days because of the moderate interday reliability.
Testing and Modeling the Gradually Applying Compressive Stress to Measuring the Strain of Self-Compacted Cement Paste Using Vipulanandan p-q Model
Authors: Mahmood Wael , Salih Mohammed Ahmed , Asteris Panagiotis G. , Ahmed Hawreen
Published: January 2022

This study tested and quantified the stress-strain behavior, elastic modulus, and toughness of self-compacted cement paste. The characteristics of self-compacted flowable cement paste modified with two types of polymer up to 0.06 % (dry weight of cement) were investigated. Stress-strain behavior of modified cement with polymer was investigated for different curing times 1, 3, 7, and 28 days. Adding polymers improved the flowability of cement by 7 to 26 %, but it decreased the water/cement ratio (w/c) from 0.5 to 0.29, depending on the polymeric structure and its content. The nonlinear Vipulanandan p-q equation was tested to predict the stress-strain relationship of the modified cement with polymers and was compared with the β model. When 0.06 % polymers were added to cement, the compressive strength increased by 107 to 257 %. According to polymer types, curing age (t), w/c, and polymer content, the initial elastic modulus (E) of cement also increased by 23 to 240 % with additional polymers. Based on the statistical evaluation tools, the Vipulanandan p-q model predicted the stress-strain relationships better than β model. Linear and nonlinear relationships were used to predict the compressive strength, modulus of elasticity, and toughness of the cement paste as a function of w/c, curing time, and polymer contents.
EU ANTI-COVID POLICY IN THE WESTERN BALKANS
Authors:   Kazan Federal University, Islamov Damir
Published: January 2022

The pandemic generated by COVID-19 has brought new challenges for global politics. For this reason, the EU has been changing its policy towards the Western Balkans. The entire region is known to be engaged in the European integration process, which has received new issues associated with the COVID-19 pandemic. Therefore, the «Team Europe» package was launched on April 2020 to support EU partner countries in response to coronavirus and its consequences. This programme includes the most vulnerable countries of the European Neighborhood Policy, Africa and the Western Balkans. The core task was to back the health system and the socio-economic recovery of the partner states. In addition, the distribution of vaccines against COVID-19, called as «vaccine diplomacy», has become a peculiar policy area. The EU is vigorously involved in this process, especially allocating funds to the COVAX program and its internal distribution mechanisms. Consequently, the purpose of this study is to analyze the effectiveness of the EU anti-crisis policy in the Western Balkans. The article deals with the initial measures implemented by the EU to aid the countries of the region. Moreover, the author touches upon the issue of the launching of the EU’s vaccine distribution process.
ELECTION OF THE NEW PRIME MINISTER OF SWEDEN
Authors:   Institute of Europe of Russian Academy Sciences, Plevako Natalia
Published: January 2022

The article examines the situation in Sweden around the election of a new Prime minister of the country. Describing it as a political crisis, the author points to the causes that gave rise to it, the course of the crisis itself and the interim results. The reasons are seen in the self-destruction of the former two-block party-political mechanism, which turned out to be unable to find adequate answers to new challenges, the appearance of which is predetermined by both internal political processes and global events and phenomena. The restructuring of this mechanism proceeds in complex contradictory forms, which was shown by the election of the chief executive. The weakening of the old traditional rivals in the struggle for power, which also affects their internal unity, is accompanied by the activation of forces on the extreme flanks, especially the right part of it, where nationalists are strengthening from year to year. The election of a new leader of the SAP as the new prime minister with the changed, and probably not for the last time, configuration of political forces has become a fragile compromise, for which the Social Democrats will have to pay dearly – they will have to fulfill the budget of the right-wing parties. There was a temporary reconnaissance before the new battles, the main of which will be the election of a new composition of the Riksdag in 2022.
AMERICAN FOREIGN POLICY PRIORITIES TOWARDS GERMANY
Authors:   Institute of Europe of Russian Academy Sciences, Sharikov Pavel
Published: January 2022

The article addresses the priorities of US relations with Germany. The victory of Joseph Biden and Democratic Party on the elections of 2020 signified quite radical twist in US foreign policy. The election slogan «America is back» which won the White House for the Democratic Party and Congress, means restoration of transatlantic relationship, damaged by the previous administration. Germany has a special place in this process. Elections in Germany in 2021 resulted in a victory of a Social Democratic Party. Decision making in Washington on Relations with Germany are influenced by many factors, including those related to domestic policies and international relations. Domestically there have appeared contradictions between Democratic and Republican parties on a number of priority issues on the bilateral agenda. In particular, the main differences were related to the Nord Stream 2 project. The situation in Afghanistan remains an urgent problem for both sides. It is noteworthy that following the results of the last elections in the United States, the German Caucus again became active in Congress, including both democratic and republican politicians. It is clear that Biden’s administration pursues the developing of economic ties with Germany.
PARLIAMENTARY AND PRESIDENTIAL ELECTIONS IN BULGARIA. TAKE 3
Authors:   Institute of Europe of Russian Academy Sciences, Kandel Pavel
Published: January 2022

The article analyzes the preconditions, course and outcome of this year third consecutive elections to the National Assembly (14th November) and of the Head of State (14th November to 11th November). The epilogue of the protracted political crisis caused by the inflexibility of the leadership of the new «protest parties» (ETN, DB and «Stand Up Bulgaria...») resulted in their loss of both people’s trust and a significant number of parliamentary seats. The «We continue the change» movement hastily put together by two Harvard graduates Kiril Petkov and Asen Vasilev, both former ministers of the interim cabinet who proved themselves sensible managers, turned out to be able to respond to surviving hopes of the electorate for changes for the better. They were backed both by the President and external partners (Washington and Brussels). The President’s upright behavior in a complex situation ensured his re-election for a second term thus demonstrating obvious superiority over his main electoral contender. Based on the tough lessons learned by the hapless former leaders of the protest, the new movement changed the course of action, and Petkov managed to form a coalition government with the participation of socialists, although the same could have been achieved immediately after the first elections. The rather diverse new cabinet faces difficult tasks of tackling the pandemic in a country with a majority actively advocating against vaccination, of putting an end to the corrupt practices of the former regime whose members still retain strong political positions, and of starting economic and social recovery. These challenges do not promise an easy or a long life to the government. The general conclusion that can be drawn from the recent developments is that brought to power on the tide of a mass protest political amateurs might be able to play the role of a battering ram against a rotten regime but they turn out to be less competent in effectively exercising their authority. It remains only to believe that the government that has got to work will be able to prove the opposite.
The Dark Number of Insurance Crimes
Authors: Zalewski Wojciech , Majewski Piotr
Published: January 2022

Insurance crime makes is difficult to interpret and measure the scale of undisclosed crime. In the insurance industry, the perpetrator can easily craft a false claim by simulating, for example a traffic accident, injury, or property damage. This causes difficulties in the evidential process and measuring the scale of the phenomenon. The aim of the article is to analyse the phenomenon of the dark number of insurance crimes. This paper includes the analysis of the definition of the term ‘dark number’ and other factors, such the degree of market development, the effectiveness of detection, the level of insurance awareness, and the dimension of social consent in Poland and selected European countries. Defeating the problem of insurance crime and estimating the dark number of insurance crimes requires taking into account the specificity of individual markets and types of insurance. We prove that effective measurement and reduction of a dark number of insurance crime is not possible without the constant updating of knowledge about the phenomenon of insurance crime and the use of advanced IT tools.
Estudios ornitológicos en Loreto, Perú: notas sobre su historia
Authors: Salinas Letty , Arana Alejandra , Arana Cesar
Published: January 2022

En 1542 Orellana llega al Amazonas e inicia una historia de exploración continua de Loreto. Sin embargo, los estudios de las aves de este departamento recién empiezan en el siglo XIX con las exploraciones de Johann Baptist von Spix, Johann Jakob Von Tschudi, Francis-Louis de Castelnau, Emile Deville, Edward Bartlett, John Hauxwell y Henry Walter Bates quienes colectan para museos europeos y estadounidenses. En 1850 llega Antonio Raimondi al Perú incorporándose a la Universidad Nacional Mayor de San Marcos e iniciando los estudios nacionales de aves loretanas en 1859 y 1869. Raimondi colaboró activamente con Władysław Taczanowski, asistidos por Konstanty Jelski y Jan Stolzmann, cuyas colectas en Loreto fueran usadas en Ornithologie du Pérou, primer tratado de la avifauna peruana, conservándose algunos especímenes en el Museo de Historia Natural de la UNMSM (MHN). A inicios del siglo XX, Malcolm Anderson y Wilfred Osgood y posteriormente los hermanos Olalla colectaron para museos estadounidenses, marcando el inicio del predominio norteamericano en la ornitología en Perú. El investigador peruano Javier Ortiz de la Puente, primer jefe de la Sección Aves del MHN, realizó colectas en Loreto en 1948 y 1952, antes de su prematura muerte. María Koepcke, siguiente responsable de la Sección Aves del MHN, colecta en Pacaya-Samiria en 1967. John Patton O’Neill visita Loreto en 1963, iniciándose un interés que lo llevaría a impulsar la ornitología en Perú por varias décadas. La investigación continua de la avifauna loretana convirtió a esta región en un punto clave para entender los patrones de diversificación de las aves amazónicas.
The effects of physical inactivity
Authors: Soyuer Ferhan
Published: January 2022

Physical inactivity constitutes the basis of diseases that reduce life duration and quality and rank first among the causes of death in the world. Worldwide, it has been determined that 23 % of adults aged 18 and over are not active enough. According to the World Health Organization, sedentary life is among the main risk factors for deaths from non-communicable diseases worldwide and causes approximately 3.2 million deaths per year. For this reason, the issue of reducing inactivity has gained importance in the world today. As a solution, it is thought that increasing physical activity requires not only individual but also community-specific, multi-sectoral, multi-disciplinary and culturally appropriate approaches.
Comparison of ankle range of motion and functional performance between practitioners of resistance exercise with free-weight vs. Machine
Authors: Maior Alex Souto , Lobo Eduardo , Braz Marcos , Campos Jr José Carlos de , Leporace Gustavo
Published: January 2022

The purpose of this investigation was to compare ankle functional performance and ankle range of motion (ROM) between practitioners of resistance exercise (RE) with free-weights versus machines. Twenty-five men participated in this study. They were separated into two groups: (a) Free-weights; and (b) Machines. All subjects practiced regularly RE 5.3±0.7 d∙wk-1 and low aerobic training of 1.2±0.5 d∙wk-1 with a total time volume of 254.9±9.4 min∙wk-1. ROM measurements were taken in both ankles with a digital goniometer. Active ankle-dorsiflexion and plantar flexion range of motion were measured with subjects lying prone with an extended knee on a standard treatment table. The rising on the heel and the rising on toes were used to assess endurance of the ankle dorsiflexor and plantar flexor muscles, respectively. Ankle functional stability was assessed with the Single Leg Hop Test in both limbs. Ankle-dorsiflexion ROM showed a significant difference (Δ% left=21.1%; Δ% right=25.8%; P<0.01) between the Machines Group when compared to the Free-weights Group. Rising on the heel and rising on the toes showed no significant differences between the 2 groups (i.e., free-weights versus machines) (P>0.05). On the other hand, the Single Leg Hop Test (Δ% left=16.3%; Δ% right=15.4%; P<0.05) and number of jumps (Δ% left=27.9 %; Δ% right=26.1 %; P<0.05) recorded were lower in the Free-weights Group compared to the Machines Group. This study found a greater ankle-dorsiflexion ROM and performance during the Single Leg Hop Test in practitioners of RE with free-weights, showing a better control of sagittal plane movements.
Editorial: Originalidad y contexto
Authors: Aragón Vargas Luis Fernando
Published: January 2022

En este editorial se reflexiona sobre el grado de originalidad que se debe exigir a los manuscritos que se reciben para publicación en las revistas académicas y, más específicamente, en Pensar en Movimiento.
Lymphatic self-massage for enhancing immunity during a pandemic
Authors: Sapozhnikova O. V. , Eliseeva E. E.
Published: January 2022

The article is devoted to the problem of improving immunity during the COVID-19 pandemic and the related effect of lymphatic self-massage.

The article analyzes the general concepts of the lymphatic system and its functions, as well as lymphatic self-massage and its effect on cardiovascular and lymphatic systems.

It is noted that the lymph flow stimulation through movements activates and normalizes the most important body functions. Using Skype, the authors surveyed medical students about knowledge on benefits and techniques of lymphatic selfmassage.

Further, a master class was held on the technique of lymphatic self-massage. The authors studied the awareness of students about the benefits of lymphatic selfmassage, revealed a tendency to chronic diseases and assessed the benefits after the procedure.

Based on the data obtained, it was revealed that viral infections, namely COVID-19, provoke one of the most common diseases — autoimmune thyroiditis. So, 64% of the respondents noted about it.

Using lymphatic self-massage, the manifestations of this pathology decreases, the facial muscles relax and the blood and lymph outflow improves.

Thus, there is an undoubted benefit of lymphatic self-massage for the prevention of diseases with immune involvement, including COVID-19.
Impact of COVID-19 pandemic on physical activity of the Republic of Mordovia population
Authors: Usanova A. A. , Kunyaeva T. A. , Goncharova L. N. , Pushkina Ya. A. , Sergutova N. P.
Published: January 2022

This article provides an overview of data on the development of physical education and sports in the Republic of Mordovia and the impact of the COVID-19 pandemic on the physical activity of residents. Possible approaches to the restoration of body resources after COVID-19 and the organization of physical education and sports are considered.
TRAJETÓRIAS EMERGENTES DE STARTUPS BRASILEIRAS-CANADENSES À LUZ DO MODELO DE UPPSALA, EMPREENDEDORISMO DE IMIGRANTES E DA EFFECTUATION
Authors: Falcão Roberto Pessoa de Queiroz , Machado Michel Mott , Cruz Eduardo Picanço , Cunha Robson Moreira
Published: January 2022

RESUMO O presente estudo evidencia trajetórias de 19 empreendedores brasileiros de startups estabelecidas no Canadá. Os dados foram coletados por meio de entrevistas semiestruturadas com os respondentes. Dado que há poucos estudos relativos aos empreendedores brasileiros no Canadá, buscou-se verificar quais seriam suas barreiras e principais dificuldades, oportunidades e estratégias de sucesso empreendidas por eles no país. O artigo inicia com uma discussão sobre o empreendedorismo imigrante e a criação de startups. Em seguida, aborda-se o movimento migratório de brasileiros para o Canadá, tratando dos negócios brasileiros em geral e das startups, onde também focaliza-se na definição de startups e o seu perfil no Brasil, além do ecossistema canadense de startups. O presente artigo tem como contribuição teórica confrontar os dados coletados com as teorias de empreendedorismo de imigrantes, teoria da effectuation startups e modelo de Uppsala, visando elencar de forma teórica os elementos observados no grupo pesquisado. Ao final do artigo apresenta-se um diagrama que ilustra a jornada do empreendedor imigrante no processo de desenho e validação de seu modelo de negócios, sendo que as conclusões podem contribuir para as teorias empreendedoras, mostrando aspectos específicos do contexto de startups canadenses. Já como implicações práticas o estudo pode fornecer dados para possíveis políticas futuras, que objetivem atrair para o ecossistema de tecnologia canadense, empreendedores brasileiros mais qualificados e hábeis.
Interpretação Semiótica em Atividades de Modelagem Matemática
Authors: Ramos Daiany Cristiny , Almeida Lourdes Maria Werle de
Published: January 2022

Resumo No presente artigo interessa-nos capturar nas experiências dos alunos quando desenvolvem atividades de Modelagem Matemática elementos que nos permitam descrever a Modelagem Matemática em termos semióticos a partir dessas experiências. Nossos resultados levam em conta uma pesquisa empírica em que atividades de Modelagem Matemática são desenvolvidas por alunos de um curso de Licenciatura em Matemática. A interpretação semiótica nos permite inferir que as ações dos alunos se assentam nas categorias de Peirce caracterizadas como primeiridade, secundidade e terceiridade, compreendendo as perspectivas fenomenológica e ontológica destas categorias. Neste sentido, modelar matematicamente uma situação atende às peculiaridades de um fenômeno capaz de produzir conhecimento na perspectiva peirceana, segundo a qual a identificação de um continuum das três categorias é o indício desta construção. É justamente neste sentido que a experiência emanada de terceiridade faz com que o objeto, neste caso a Modelagem Matemática, já não seja para o intérprete, o aluno, como a coisa que era, mas como a coisa que se tornou depois do processo de experimentação mediado pelos signos interpretantes. A interpretação semiótica das experiências dos alunos nos leva a uma descrição da Modelagem Matemática em termos semióticos a qual assegura que, para que os alunos que se apropriem da Modelagem Matemática devem ter experiências relativas à identificação do que é Modelagem Matemática (ser Modelagem Matemática) ao mesmo tempo em que desenvolvem atividades de Modelagem (fazer Modelagem Matemática), ou seja, são interdependentes na constituição do fenômeno Modelagem Matemática as perspectivas fenomenológica e ontológica das categorias peirceanas.
Conocimiento sobre la resolución de problemas de matemáticas manifestado por estudiantes para profesor
Authors: Piñeiro Juan Luis , Castro-Rodríguez Elena , Castro Enrique
Published: January 2022

Resumen La resolución de problemas es un proceso central en la educación matemática, sin embargo, implementarla de forma efectiva en el aula no es un proceso trivial. Los profesores requieren conocimientos específicos para ello. Este trabajo presenta un estudio de casos múltiple, centrado en indagar el conocimiento de futuros maestros de primaria sobre problemas matemáticos, su proceso de resolución y la disposición hacia ellos. Se realizaron entrevistas semiestructuradas a nueve futuros maestros que terminaban su formación universitaria del grado de Educación Primaria en España. Los resultados muestran que los profesores sostienen una caracterización de problema desconectada del resolutor y una conceptualización lineal del proceso de resolución, demostrando la poca integración existente en sus conocimientos profesionales.
Epistemología de la integral como fundamento del cálculo integral
Authors: Mateus-Nieves Enrique
Published: January 2022

Resumen Se realizó una historiografía a la integral, buscando identificar su ontología e implicaciones en el proceso de formalización del cálculo integral. Es una investigación cualitativa basada en la historiografía de un contenido matemático analizado con algunas herramientas del Enfoque Ontosemiótico del Conocimiento y la Instrucción Matemática, desarrollado con estudiantes universitarios que toman la asignatura cálculo integral. El rastreo de la información permitió identificar algunas rupturas epistemológicas que direccionaron la investigación a identificar cambios en la concepción de la integral. La organización de la información permitió identificar tres periodos: 1) La integral como operador. 2) Evolución de la operación integración originando el cálculo integral. 3) Fundamentación del cálculo integral. Se identificó al cálculo integral como un ámbito poco explorado y normalmente considerado complejo. Esta propuesta permite pensar la integral no como un objeto complejo, sino como un ente matemático formado por diversos significados que deben descomponerse para su estudio. Los tres periodos aquí propuestos permiten: identificar la complejidad que la conforma, pensar en posibles maneras de relacionar, conectar o articular esa complejidad, en miras de lograr una articulación que redunde en comprensión y desarrollo de competencias matemáticas en aquellos que la estudian.
Quando Mudam os Interlocutores: produzindo diferentes significados a partir de “ser professor de Matemática”
Authors: Silva Walter Luís Moura , Julio Rejane Siqueira , Oliveira Viviane Cristina Almada de
Published: January 2022

Resumo Este trabalho tem como foco a análise, com base no Modelo dos Campos Semânticos, das produções de significados de licenciandos em Matemática a partir da afirmação “ser professor de Matemática”. Sob uma abordagem qualitativa, como disparadoras das produções de significados, realizamos entrevistas semiestruturadas junto a discentes regularmente matriculados no último semestre do curso de Licenciatura em Matemática, de uma universidade pública do interior de Minas Gerais. A partir de uma leitura plausível de falas dos futuros professores de Matemática, observamos diferentes interlocutores, o que nos permitiu identificar distintos modos de “ser professor de Matemática” constituídos por eles. Neste artigo, apresentamos tais interlocutores, marcando a diferença dos modos de produção de significados dos licenciandos entrevistados. Em nossa compreensão, quando os licenciandos em Matemática enunciaram de diferentes modos o que é “ser professor de Matemática”, no mesmo espaço-tempo, eles não se contradisseram; produziram significados que, para eles, eram legítimos dentro da atividade na qual se colocaram. Nesta perspectiva, defendemos que o processo de formação inicial pode ter sido uma oportunidade de serem constituídos, pelos licenciandos, novos interlocutores.
50 metros al este del antiguo Higuerón: formas culturales de abordar la localización espacial con potencialidades etnomatemáticas
Authors: Gavarrete María Elena , Albanese Veronica
Published: January 2022

Resumen Desde la Etnomatemática se plantea la importancia de tener en consideración aspectos propios de la cultura de los estudiantes, para acercarlos al aprendizaje de conceptos matemáticos que están en uso durante las prácticas cotidianas. Para ello es necesario, primero, analizar en profundidad tales elementos de la cultura para identificar relaciones con la matemática escolar y después formar adecuadamente a los docentes. Presentamos entonces, aquí, el análisis etnomatemático del signo cultural costarricense de las direcciones a la tica como un signo idiosincrático para la localización espacial de las direcciones postales o de las indicaciones para determinar un lugar. Utilizamos las perspectivas teóricas ética-local, émica-global, y dialógica-glocal como principales herramientas teóricas y metodológicas para realizar el análisis. Finalmente, problematizamos este signo cultural para la acción pedagógica describiendo algunas actividades que se han llevado a cabo para la formación de docentes en Costa Rica.
Los Sistemas de Numeración Aymara: cambios y Valor Formativo
Authors: Vilca-Apaza Henry-Mark , Bermejo-Paredes Saúl , Ari Danitza Luisa Sardón
Published: January 2022

Resumen La etnia aymara llegó al Altiplano peruano en el siglo XI y, luego de conquistar a los Pukinas, se asentó a orillas del lago Titicaca, Perú-Bolivia. Para atender sus necesidades de contabilidad y organización, desarrolló un sistema de numeración, acorde a su contexto geográfico y de la mano con el sincretismo cultural, consecuencia de las conquistas. En ese marco, fue objetivo del presente artículo, identificar, analizar y sistematizar el sistema de numeración del pueblo aymara. La metodología empleada fue el cualitativo-etnográfico, consistente en visitas de campo y entrevistas a los mayores y jóvenes de las comunidades intervenidas, y revisión de fuentes documentales de la época colonial (1612 y 1616), respaldado por el enfoque de la Etnomatemática. Los resultados muestran que existen dos sistemas de numeración, y no solo uno como hasta ahora se creía, que actualmente se yuxtaponen: el originario de base quinaria que guarda información cuantitativa y cualitativa, sobre el que se estructuró el sistema numérico de base decimal, eminentemente oral.