bluuebunny/crossref_metadata_2025 huggingface dataset:
Model-free control for distributed stream data processing using deep reinforcement learning
Authors: Li Teng , Xu Zhiyuan , Tang Jian , Wang Yanzhi
Published: February 2020

In this paper, we focus on general-purpose
Distributed Stream Data Processing Systems (DSDPSs)
, which deal with processing of unbounded streams of continuous data at scale distributedly in real or near-real time. A fundamental problem in a DSDPS is the scheduling problem (i.e., assigning workload to workers/machines) with the objective of minimizing average end-to-end tuple processing time. A widely-used solution is to distribute workload evenly over machines in the cluster in a round-robin manner, which is obviously not efficient due to lack of consideration for communication delay. Model-based approaches (such as queueing theory) do not work well either due to the high complexity of the system environment.

We aim to develop a novel model-free approach that can learn to well control a DSDPS from its experience rather than accurate and mathematically solvable system models, just as a human learns a skill (such as cooking, driving, swimming, etc). Specifically, we, for the first time, propose to leverage emerging Deep Reinforcement Learning (DRL) for enabling model-free control in DSDPSs; and present design, implementation and evaluation of a novel and highly effective DRL-based control framework, which minimizes average end-to-end tuple processing time by jointly learning the system environment via collecting very limited runtime statistics data and making decisions under the guidance of powerful Deep Neural Networks (DNNs). To validate and evaluate the proposed framework, we implemented it based on a widely-used DSDPS, Apache Storm, and tested it with three representative applications: continuous queries, log stream processing and word count (stream version). Extensive experimental results show 1) Compared to Storm's default scheduler and the state-of-the-art model-based method, the proposed framework reduces average tuple processing by 33.5% and 14.0% respectively on average. 2) The proposed framework can quickly reach a good scheduling solution during online learning, which justifies its practicability for online control in DSDPSs.
Controlled Evaluation in a Diesel Engine of the Biofuel Obtained with Ni/γ-Al2O3 Nanoparticles in the Hydrodeoxygenation of Oleic Acid
Authors: Sánchez-Cárdenas Manuel , Sánchez-Olmos Luis A. , Sathish-Kumar K. , Trejo-Zarraga Fernando , Maldonado-Ruelas Víctor A. , Ortiz-Medina Raúl A.
Published: February 2020

Renewable biodiesel with a high content of n-C17 alkanes was prepared through the catalytic hydrodeoxygenation of oleic acid under optimum conditions of temperature, reaction time and weight percentage of Ni deposited in γ-Al2O3. The hydrotreated vegetable oil (HVO) was blended with petrodiesel (20 % and 40 % of HVO) to evaluate its behaviour in a diesel engine. Comparative studies of power and emission of atmospheric pollutants such as NOx, CO, HC and smoke were evaluated under prepared blends and petrodiesel. The presence of HVO biodiesel at full load generated a slight decrease in power compared to petrodiesel; however, the decrease in emission of pollutants when using the blends containing HVO was significant. In the case of 40 % HVO were able to reduce more of 20 % of CO and HC emissions, and more than 40 % reduction in smoke when compared with petrodiesel. The NOx emissions of the blends with HVO had a significant slightly decrease. Further, the properties of Ni/γ-Al2O3 catalysts are justified by the results of EDS characterization, surface area (SBET), XRD, XPS, HR-TEM and it’s capacity to produce biodiesel.
Mass Modelling and Effects of Fruit Position on Firmness and Adhesiveness of Banana Variety Nipah
Authors: Zainal A’Bidin Farahana Nabilah , Shamsudin Rosnah , Mohd Basri Mohd Salahuddin , Mohd Dom Zanariah
Published: February 2020

Fruits including banana are susceptible to damage especially during transportation. Nipah banana, also known as Musa acuminata balbisiana, has irregular shape and is short in length. This paper focuses on the physical and mechanical properties of Nipah banana. Mathematical models were developed to predict the mass of banana fruit based on the physical properties. Changes during ripening period in terms of the firmness and adhesiveness of Nipah banana were investigated at room temperature (25 °C) for three different positions in a finger. Peak positive and negative force was taken as firmness and adhesiveness, respectively. Results showed that the multiple regression modelling based on three dimensions had the highest R
2 value. Values of firmness and adhesiveness decreased with the ripening days due to starch degradation and accumulation of soluble sugars. A similar trend was observed on the firmness for all three positions.
Is Financial Distress Value Relevant? – Implications for Multiple-Based Valuation
Authors: Goetz Sabrina
Published: February 2020

In relative valuation peer groups of comparable companies are essential to derive the value of the firm. Valuing a target firm that is in financial distress by using a set of healthy peer group firms probably leads to an overvaluation. We examine whether the financial distress risk has an influence on a company’s value and quantify the discount through financial distress. We identify financial distress by Standard and Poor’s long-term issuer ratings and Altman’s z″-score. We then match the identified firms in financial distress with healthy counterparts that are comparable in value relevant characteristics, i. e. profitability, risk, and growth, to estimate the percentage difference in valuation multiples. Using rating information, in every year almost half of the companies are in financial distress whereas by Altman’s z″-score about 20% of the companies in the sample are in financial distress. We find that the discount caused by financial distress makes up about 4–7% of firm value. The discount increases for lower rating classes and lower z″-scores. Besides the degree of financial distress, market downturns as the financial crisis affect the distress discount.
The characteristics and nomogram for primary lung papillary adenocarcinoma
Authors: Zhang Yuqian , Xie Hui , Zhang Ziying , Zhang Pengfei , Chen Peng , Wang Xiang
Published: February 2020

Background

Primary pulmonary papillary adenocarcinoma (PA) is a specific and rare subtype of invasive pulmonary adenocarcinoma (ADC). The knowledge concerning the clinicopathologic features and prognosis of patients with primary pulmonary PA has not been clarified because of its rarity.

Methods

The clinical data of a total of 3391 patients with primary pulmonary PA were retrospectively analyzed to confirm their clinical characteristics and factors influencing prognosis and were in comparison with 3236 patients with non- PA pulmonary adenocarcinoma. All patients were histologically diagnosed between 1988 and 2015 in The Surveillance Epidemiology and End Results (SEER) database. A nomogram with satisfactory predictive performance was established to visually predict long-term survival of these patients.

Results and conclusion

Collectively, primary pulmonary PA is a rare pathological cancer and its prognosis is analogous to that of non-PA pulmonary adenocarcinoma. Older age, larger lesions, distant metastases, lymph node invasion, and poor pathological differentiation are correlative with unacceptable prognosis. Surgical intervention is conducive to reaping favorable prognosis. Unfortunately, radiotherapy or chemotherapy results of no significant effects on patient survival. In our study, a nomogram with prognostic function is formulated to confer individual prediction of overall survival (OS).
Enhanced photoresponse of highly air-stable palladium diselenide by thickness engineering
Authors: Wu Jing , Zhao Yunshan , Sun Minglei , Zheng Minrui , Zhang Gang , Liu Xinke , Chi Dongzhi
Published: February 2020

Recently, layered two-dimensional (2D) palladium diselenide (PdSe2), with a unique low- symmetry puckered pentagon atomic morphology, has emerged as a promising candidate for next-generation nanoelectronics and optoelectronics because of its chemical stability and extraordinary electrical properties. Moreover, PdSe2 possesses a strong thickness-dependent bandgap that varies from 0 eV for bulk to 1.3 eV for monolayer, which can further render its potential applications in optoelectronics. However, the layer-dependent optoelectronic properties of PdSe2 are still lacking up to date. Herein, we studied the optoelectronics transport characteristics of high-quality PdSe2-based photodetectors with different thicknesses. We demonstrated an enhancement of PdSe2 photodetector performance owing to the band engineering via a thickness reduction. The highest responsivity of 5.35 A/W can be achieved with an external quantum efficiency of 1250% at the wavelength of 532 nm. We attribute such high performance in photoresponsivity to the high valley convergence in the conduction band of layered PdSe2, in agreement with first-principles calculation. Our results offer new insight into the layer-dependent optoelectronic properties of PdSe2 and open new avenues in engineering next-generation 2D-based electronics and optoelectronics.
High gas permeability of nanoZIF-8/polymer-based mixed matrix membranes intended for biogas purification
Authors: Sutrisna Putu Doddy , Savitri Emma
Published: February 2020

The production of biomethane from the biogas purification process depends on the capacity of the separation technique employed to separate methane from carbon dioxide. Mixed matrix membranes (MMMs) combine the benefits of polymeric and inorganic materials, and it is believed that the trade-off between gas permeability and selectivity in polymeric membranes can be hampered by MMMs. Until recently, the development of MMMs for the biogas purification process has been constrained in lab scales. To be applied in large scales, the increase in gas permeability as well as the membrane performance under the influence of CO2 plasticization needs to be investigated. This paper reports the evaluation of gas permeability and CO2/CH4 gas separation performances of nano zeolitic imidazolate framework (ZIF)-8/Pebax-1657 to be used for biogas purification processes. In addition, the study on the CO2 plasticization behavior of MMMs fabricated with co-polymer Pebax was investigated. The incorporation of nanoZIF-8 particles inhibited the increase of CO2 permeability due to the reduced polymer flexibility. In addition, the diffusional selectivity of ZIF-8 improves the permeation behavior of both gases through MMMs. With nanoZIF-8/Pebax-1657 MMMs, the incorporation of particles improves the gas permeability with a slight decrease in gas selectivity, indicating a potentiality of the membranes used for biogas purification processes.
25 Years of Elder Law: An Integrative and Historical Account of the Field of Law and Aging
Authors: Doron Israel
Published: February 2020

Twenty-five years have passed since my first exposure to the field of “elder law.” From a “young” master’s student I have become a law professor and a gerontologist who specializes in law and aging. The journey I have personally experienced in the last quarter-century provided me with some perspective regarding the field of elder law (or, as I prefer to call it, law and aging).

In this Article, I try to summarize my experience and share some personal insights on the field. This is naturally a very personal and subjective experience. However, it may be constructive to others in shaping the next twenty-five years of the field. Hence, the goal of this Article is to provide both an integrative description of the developments in the field and some propositions for possible future directions.
Advances in transcription factors related to neuroglial cell reprogramming
Authors: Liu Kuangpin , Ma Wei , Li Chunyan , Li Junjun , Zhang Xingkui , Liu Jie , Liu Wei , Wu Zheng , Zang Chenghao , Liang Yu , Guo Jianhui , Li Liyan
Published: February 2020

Neuroglial cells have a high level of plasticity, and many types of these cells are present in the nervous system. Neuroglial cells provide diverse therapeutic targets for neurological diseases and injury repair. Cell reprogramming technology provides an efficient pathway for cell transformation during neural regeneration, while transcription factor-mediated reprogramming can facilitate the understanding of how neuroglial cells mature into functional neurons and promote neurological function recovery.
The Effect of Resistance Exercise Movement Tempo on Psychophysiological Responses in Novice Men
Authors: Tavares Vagner Deuel de Oliveira , Agrícola Pedro Moraes Dutra , Nascimento Paulo Henrique Duarte , nidas de Oliveira Neto Leô , Elsangedy Hassan Mohamed , Machado Daniel Gomes da Silva
Published: February 2020

Tavares, VDdO, Agrícola, PMD, Nascimento, PHD, Oliveira Neto, L, Elsangedy, HM, and Machado, DGS. The effect of resistance exercise movement tempo on psychophysiological responses in novice men. J Strength Cond Res 34(5): 1264–1273, 2020—This study aimed to compare the effects of movement tempo in resistance exercise (RE) on psychophysiological responses in novice men. Seventeen novice men (24.5 ± 3.2 years; 79.3 ± 8.22 kg; 1.76 ± 0.06 m) performed the 10 repetition maximum (10RM) test for bench press and knee extension in 2 sessions (test-retest) and 2 RE training sessions with different movement tempos in a random and counterbalanced order (4 sets of 10 repetitions). The low tempo RE (LTRE) session was performed using 50% 10RM with 3-0-3-0 seconds (concentric, pause, eccentric, and pause, respectively). The moderate tempo RE (MTRE) session was performed using 80% 10RM with 1-0-1-0 seconds (concentric, pause, eccentric, and pause, respectively). Affective valence (Feeling Scale), perceived activation (FAS), attentional focus, and ratings of perceived exertion (Borg 6–20) were reported after each set. A two-way analysis of variance with repeated measures showed only a significant main effect of the set (all ps < 0.05), indicating changes between sets but not between LTRE and MTRE. In addition, a paired-samples t-test did not find significant differences between LTRE and MTRE, on average, in any psychophysiological responses (all ps > 0.16). Thus, for the protocol tested, there is no psychophysiological advantage to using either LTRE or MTRE in novice men. From a practical perspective, for psychophysiological responses, the present results suggest that it is up to the trainer/coach to decide which RE movement tempo to use, which will depend on the purpose of the training period, specificity, client tolerance of and preference for exercise intensity, and movement tempo.
α2δ-2 Protein Controls Structure and Function at the Cerebellar Climbing Fiber Synapse
Authors: Beeson Kathleen A. , Beeson Ryne , Westbrook Gary L. , Schnell Eric
Published: February 2020

α2δ proteins (Cacna2d1-4) are auxiliary subunits of voltage-dependent calcium channels that also drive synapse formation and maturation. Because cerebellar Purkinje cells (PCs) predominantly, if not exclusively, express one isoform of this family, α2δ-2 (Cacna2d2), we used PCs as a model system to examine roles of α2δ in excitatory synaptic function in male and femaleCacna2d2knock-out (KO) mice. Whole-cell recordings of PCs from acute cerebellar slices revealed altered climbing fiber (CF)-evoked complex spike generation, as well as increased amplitude and faster decay of CF-evoked EPSCs. CF terminals in the KO were localized more proximally on PC dendrites, as indicated by VGLUT2+immunoreactive puncta, and computational modeling demonstrated that the increased EPSC amplitude can be partly attributed to the more proximal location of CF terminals. In addition, CFs in KO mice exhibited increased multivesicular transmission, corresponding to greater sustained responses during repetitive stimulation, despite a reduction in the measured probability of release. Electron microscopy demonstrated that mutant CF terminals had twice as many vesicle release sites, providing a morphologic explanation for the enhanced glutamate release. Though KO CFs evoked larger amplitude EPSCs, the charge transfer was the same as wild-type as a result of increased glutamate reuptake, producing faster decay kinetics. Together, the larger, faster EPSCs in the KO explain the altered complex spike responses, which degrade information transfer from PCs and likely contribute to ataxia inCacna2d2KO mice. Our results also illustrate the multidimensional synaptic roles of α2δ proteins.

SIGNIFICANCE STATEMENTα2δ proteins (Cacna2d1-4) regulate synaptic transmission and synaptogenesis, but coexpression of multiple α2δ isoforms has obscured a clear understanding of how various α2δ proteins control synaptic function. We focused on roles of the α2δ-2 protein (Cacna2d2), the deletion of which causes cerebellar ataxia and epilepsy in mice and humans. Because cerebellar Purkinje cells (PCs) only express this single isoform, we studied excitatory climbing fiber synaptic function onto PCs inCacna2d2KO mice. Using optical and electrophysiological analysis, we provide a detailed description of the changes in PCs lacking α2δ-2, and provide a comprehensive mechanistic explanation for how functional synaptic phenotypes contribute to the altered cerebellar output.
Junction 48
Authors: McDonald David A.
Published: February 2020

In the fall of 2012 Palestinian hip-hop group DAM released a provocative music video titled, “If I Could Go Back in Time,” focusing on so-called “honor crimes.” Despite widespread support for their previous work, “If I Could Go Back in Time” drew considerable criticism for de-contextualizing, romanticizing, and by extension disempowering Palestinian women. Through a critical analysis of this music video as well as the ensuing debate surrounding its interpretation and reception, this article argues that the critical interventions made by politically engaged hip-hop artists, such as DAM, offer a unique vantage point with which to better understand the contested terrain of Palestinian activism. By tracing DAM's long history of political engagement this article examines the discourses that determine “acceptable” forms of activism among competing publics, and further demonstrates how the field of popular culture serves to shape (both positively and negatively) the potential impact of, and audience for, any activist intervention. Drawing from the recent release of the bi-national feature film, Junction 48, this article further explores how DAM front man, Tamer Nafar, has attempted to displace the compassionate gaze of international audiences, respond to colonial logics of elimination, and carve out autonomous spaces for self-reflection and radical vulnerability.
HEREDITARY ENDOCRINE TUMOURS: CURRENT STATE-OF-THE-ART AND RESEARCH OPPORTUNITIES: The roles of AIP and GPR101 in familial isolated pituitary adenomas (FIPA)
Authors: Vasilev Vladimir , Daly Adrian F , Trivellin Giampaolo , Stratakis Constantine A , Zacharieva Sabina , Beckers Albert
Published: February 2020

Familial isolated pituitary adenoma (FIPA) is one of the most frequent conditions associated with an inherited presentation of pituitary tumors. FIPA can present with pituitary adenomas of any secretory/non-secretory type. Mutations in the gene for the aryl-hydrocarbon receptor interacting protein (AIP) have been identified in approximately 20% of FIPA families and are the most frequent cause (29%) of pituitary gigantism. Pituitary tumors in FIPA are larger, occur at a younger age and display more aggressive characteristics and evolution than sporadic adenomas. This aggressiveness is especially marked in FIPA kindreds with AIP mutations. Special attention should be paid to young patients with pituitary gigantism and/or macroadenomas, as AIP mutations are prevalent in these groups. Duplications on chromosome Xq26.3 involving the gene GPR101 lead to X-linked acrogigantism (X-LAG), a syndrome of pituitary gigantism beginning in early childhood; three kindreds with X-LAG have presented in the setting of FIPA. Management of pituitary adenomas in the setting of FIPA, AIP mutations and GPR101 duplications is often more complex than in sporadic disease due to early onset disease, aggressive tumor growth and resistance to medical therapy.
Evaluación de la calidad del agua de los arrecifes del golfo de Cazones, sur de Cuba, a partir de algunos indicadores microbiológicos y químicos
Authors: Lugioyo Gladys Margarita , González Daymarlen , García Ileana
Published: February 2020

Los arrecifes coralinos constituyen uno de los ecosistemas más amenazados por los efectos de la actividad antrópica y el cambio climático, impactos a los cuales no escapan los arrecifes del Mar Caribe. El objetivo de la investigación fue la evaluación de la calidad del agua aledaña a los arrecifes del golfo de Cazones, S de Cuba, a partir de algunos indicadores microbiológicos y químicos. Se realizaron dos muestreos en épocas contrastantes, noviembre 2015 (invierno) y abril 2017 (verano), donde se tomaron 13 muestras de agua (cinco en las crestas y ocho en los arrecifes frontales). Los arrecifes más vulnerables, tomando en consideración los indicadores seleccionados microbiológicos y químicos de calidad de las aguas, fueron Sureste de cayo Diego Pérez 2 (SE-Cy.DP2), Sureste de cayo Diego Pérez 1 (SE-Cy.DP1) y Sur de la ensenada de Cazones (S-EC) (Nirvana), al presentar elevadas concentraciones de bacterias heterótrofas, de sulfato-reductoras, de vibrios y de materia orgánica (DQO).  De acuerdo con la concentración de bacterias heterótrofas, el estado trófico de las aguas varió entre mesotróficas a meso-eutróficas oeste de la ensenada de Cazones (O-EC), seguido de este de la ensenada de Cazones (E-EC) y sur de la ensenada de Cazones (S-EC) lo que indica que las aguas aledañas a esos arrecifes se mantienen enriquecidas de materia orgánica, tanto en las crestas como en los arrecifes frontales. Los resultados obtenidos deben servir de alerta, ya que existen condiciones para el deterioro paulatino de los arrecifes.
ДВІ КОНТАКТНІ ЗАДАЧІ ПРО ВТИСНЕННЯ КІЛЬЦЕВОГО ШТАМПУ В ПРУЖНИЙ ШАР
Authors: Bosakov S. V.
Published: February 2020

Подано розв’язок контактної задачі для кільцевого штампу на пружній основі під дією осесиметрично прикладених сили та моменту. Розрахунок зроблено методом ортогональних поліномів с використанням спеціальної апроксимації ядра інтегрального рівняння для шару. Приведені числові результати.
КОНЦЕНТРАЦІЯ НАПРУЖЕНЬ ПРИ ПРУЖНО-ПЛАСТИЧНОМУ ДЕФОРМУВАННІ
Authors: Panin K. V.
Published: February 2020

Розглядається квазістатична задача про складне двохосьове навантаження квадратної пружно-пластичної пластинки з круговим отвором. В якості фізичних рівнянь використаний диференціально-нелінійний варіант теорії пластичності, що враховує мікродеформації. З використанням методу скінченних елементів отримані числові результати, що свідчать про те, що вплив історії навантаження на концентрацію напружень пластинки може бути значним.
АЛГОРИТМ РОЗРАХУНКУ ЦИЛІНДРИЧНОЇ ОБОЛОНКИ ЗІ ЗМІННОЮ В ОКРУЖНОМУ НАПРЯМКУ ЖОРСТКІСТЮ НА ОСНОВІ ДИСКРЕТНО-КОНТИНУАЛЬНОГО ПІДХОДУ
Authors: A. P. Dzyuba  , I. A. Safronova  , L. D. Levitina
Published: February 2020

Викладено алгоритм дискретно-континульного методу прямих для розрахунку напружено-деформованого стану циліндричної оболонки довільно змінної у меридіональному і окружному напрямку товщиною стінки при несиметричному навантаженні. Прискорення збіжності здійснюється за допомогою розробленого алгоритму прогнозування. Подані результати числового аналізу.
НАУКОВА ШКОЛА З БАЛІСТИЧНОГО ПРОЕКТУВАННЯ ЛІТАЛЬНИХ АПАРАТІВ НА КАФЕДРІ ПРОЕКТУВАННЯ ТА КОНСТРУКЦІЙ І В НДЛ РАКЕТНО-КОСМІЧНОЇ ТЕХНІКИ НДІ ЕНЕРГЕТИКИ: ІСТОРІЯ ТА СЬОГОДЕННЯ
Authors: Дубовик Л. Г.
Published: February 2020

The history of creation and the present one of scientific directions of chair of designing and designs and research laboratory of rocket-technical engineering of scientific research institute of power, introduction of results in practice are considered. The powerful contribution to development of this direction of professor Dronja Nikolay Mihajlovicha is noted.
ПЕРСПЕКТИВНІ НАПРЯМКИ НАУКОВИХ ДОСЛІДЖЕНЬ НА КАФЕДРІ ДВИГУНОБУДУВАННЯ
Authors: Катренко М. О. , Бондаренко С. Г. , Сосновська О. В. , Золотько О. Є. , Марченко О. Л. , Подольчак С. М.
Published: February 2020

A retrospective of directions of scientific researches of employees of the chair of engine-building of physical-technical faculty is presented. The historical formation and development, achievements of the faculty's scientists in the field of rocket engine construction, as well as prospects  or their further research are considered.
ANGULAR MOVEMENT PROGRAM CALCULATION PROCEDURE SPACECRAFT WHEN TAKING THE SURFACE OF THE EARTH IN AREA MODE
Authors: Lutz Oleg Viktorovich , Borshchova Galina Alexandrovna , Yarmolchuk Evgeny Dmitrievich , Manoilenko Alexander Alekseevich
Published: February 2020

Currently increased interest in satellite images of the Earth's surface with high resolution terrain  (1 to 10 m). To obtain such images, you must use a long focus optical system (OS) having a limited field of view that does not allow the images of the large width. To increase the effectiveness of shooting in modern space systems (SS) Earth observation provides the opportunity after shooting a segment of the Earth's surface to redirect the OS to another area and spend it shooting. With sufficient speed shift OS it is possible to survey two or more adjacent parcels, which is almost equivalent to the corresponding increase in the width of the field of view of the removing apparatus. In this connection there is the task of restoring the OS, which is solved by the use of appropriate hardware and software control the angular movement of the removing apparatus. When creating the SS there is also the need to solve the following tasks: calculation of the program angular motion in a given length of the removable sections and a predetermined number of adjacent strips to be shot, with the purpose of definition of system requirements, spacecraft (SC) control and calculation under given characteristics of the system orientation of the SC possible number of the maximum length and remove adjacent portions of the surface of the Earth. To solve these tasks the mathematical model software of angular motion of the SC. Given the necessary initial data, mathematical model and method of calculation of kinematic parameters of a software angular motion of a SC in the mode of area highway shooting adjacent sections of the Earth's surface located at a predetermined distance from a trace route SC; examples and results of numerical calculations of the programmes angular motion by moving the instrument in remote sensing.
China, Geopolitics and Geoeconomics. How Not to Fall into the Trap of Narration?
Authors: Malinowski Grzegorz
Published: February 2020

Chinese infrastructural projects like the “Belt & Road Initiative” or the “Chinese 16 + 1 Initiative” are trapped in geopolitical narratives. Geopolitical concepts dressed in scientific robes make the logic of warfare begin to prevail over the logic of cooperation. As a consequence, something that was to be an opportunity for less developed countries, becomes the axis of conflict between the great powers. In this paper, I identify the logic of warfare as an underlining characteristic of geopolitical reasoning and show why it is incompatible with economic approach. I also argue that geopolitical concepts are not scientific theories, but rather self-fulfilling prophecies. This theoretical background allows to detect the biggest obstacles related to many Chinese initiatives, and also indicates some necessary means to neutralize geopolitical narratives.
Political Budget Cycles in the European Union: New Evidence of Fragmentation*
Authors: Bednář Milan
Published: February 2020

This paper deals with the possible existence of political budget cycles (PBCs) within the European Union (EU). I use panel data for 28 EU countries from 1995 to 2016 and provide estimates based on dynamic panel regressions. I employ a system-GMM estimator complemented by the Principal Component Analysis (PCA) to limit the number of instruments. The specifications include structural budget balances related to the potential GDP, thereby limiting the initial endogeneity. These measures capture the true motivation behind fiscal policies. The results suggest that the EU member states exhibit PBCs: (i) the intervention occurs in the year before elections and (ii) the structural budget balance to the potential GDP ratio is lower by −0.41 percentage points a year before elections. In addition, I have investigated the EU fragmentation in terms of the PBCs and selected 8 countries’ characteristics correlating to the existence of these cycles. These include lower GDP per capita, post-communist background, low tax burden, high perceived corruption, low levels of media freedom and internet usage, lower number of directly voted-in legislative officials, and a low parliamentary voter turnout.
Grounding Complexity Economics in Framing Modern Governance*
Authors: Kovács Olivér
Published: February 2020

This paper addresses the hottest potato of economics today, namely why the profession seems to have been lulled into a sense of false security in spite of flourishing economic models as well as subfield-knowledge in various disciplines? The embarrassing question of the Queen of England ‘why did nobody see the crisis of 2008 coming’ emblematically signalled the failure of the collective imagination of the entire profession to understand the system and its emerging patterns. The present paper can be seen therefore as a clarion call for grounding a shift towards an economics barded with the lessons learnt in complexity science in shaping modern governance.
Differences in anthropometric characteristics between young soccer players (U19) members of the best soccer clubs in Montenegro, Bosnia and Herzegovina, and Kosovo
Authors: Gardasevic J. , Bjelica D. , Vasiljevic I.
Published: February 2020

Background and Study Aim: The aim of this research was to determine the differences between the young soccer players (U19) in terms of anthropometric characteristics and body composition. We considered players of three the most successful clubs in three countries of the southern region of the Balkan Peninsula. Material and Methods: The first sub-sample of the subjects was consisted of 17 players of OFC Titograd from Montenegro of the average age 17.12±.69. The second sub-sample was consisted of 14 players of FC Siroki Brijeg from Bosnia and Herzegovina of the average age of 18.14±.86. The last sub-sample of the examinees was consisted of 15 players of FC Feronikeli from Kosovo of the average age 18.07±.46. Anthropometric characteristics in the body composition were evaluated by a battery of 11 variables. The significance of the differences between the young soccer players in the anthropometric characteristics and variables for assessing body composition were determined by ANOVA and LSD Post Hoc test. Results: The young soccer players of the three mentioned clubs have statistically significant differences by the two variables that estimate the upper leg skinfold and fat percentage. The young soccer players of OFC Titograd are significantly better in variable upper leg skinfold than other players. The young soccer players of FC Feronikeli are significantly better in variable fat percentage than players of OFC Titograd. Conclusions: The results can be useful for coaches of other clubs for making a comparison of their soccer players with the young soccer players in this research.
Nonverbal communication of young players in team sports
Authors: Pop C.L. , Zamfir M.V.
Published: February 2020

Background and study aim : Nonverbal communication is always present in sport teams’ competition, on the court and around the court. This paper purpose is to investigate the nonverbal skills in two elite basketball cadet teams. Material and Methods: Pursuing this goal, we applied the PONS test to a group of 38 young basketball players 15 -16-year-old: 20 girls and 18 boys. The teenagers were members of Romanian national cadet teams having at least 3 years up to 7 years of experience playing basketball. The test applied to this sample was The Profile of Nonverbal Sensitivity. The test results were statistically analysed aiming to evaluate the nonverbal decoding accuracy of each evaluated athlete and to identify the possible differences between the two teams: boys and girls. Results : There is a statistically significant difference between the two teams in boys’ favor, meaning that the girls have done lower average general scores. In decoding face cues both teams are almost equal, de difference relay on understanding the body movement and attitude. Conclusions: Due the scores obtained by the tested players we can conclude that their nonverbal skills are at high level. Training nonverbal communication potentially enhanced game planning and building into the team a healthy psychological and social environment.
Correlation relation between professional qualifications of physical education teachers and students’ attitudes towards Physical Education classes
Authors: Sucuoglu E. , Atamturk H.
Published: February 2020

Purpose: This empirical study investigated the impact of the professional qualifications of Physical Education (PE) teachers on secondary school students’ attitudes towards their PE classes. Education in general and teaching and learning in particular are multidimensional phenomena and thus it is essential to determine and define these dimensions to sustain quality in education. From the psychological perspective, along with various factors, teachers’ personality and qualifications may affect students’ learning process. In this respect, effective teachers can foster students’ learning process and help develop positive attitudes towards a course. Material: In order to fulfill the research aim, the data were elicited through a questionnaire from five hundred and ninety-two secondary school students from grades 9, 10 and 11in North Cyprus to be analyzed quantitatively. Kolmogorov-Smirnov Test and Shapiro-Wilk Testwere run to test normality. Seeing that the data set was not well-modeled by a normal distribution, a Spearman's rank correlation coefficient was run to measure the association between the variables. Results: A very strong positive correlation was found between the professional qualifications of teachers and the participants’ attitudes towards PE classes. Conclusions: The results indicated that there was a significant relationship between the qualifications of the teachers and the students’ attitudes towards PE classes. More specifically, it was found that the higher the perceptions of students of the professional qualifications of PE teachers, the more positive attitudes they developed towards PE classes.
Solvability of a system of higher order nonlinear difference equations
Authors: KARA Merve , YAZLİK Yasin , TOLLU Durhasan Turgut
Published: February 2020

In this paper we show that the system of difference equations\[ x_n= a y_{n-k}+\frac{dy_{n-k}x_{n-( k+l ) }}{b x_{n-(k+l)}+cy_{n-l}}=\alpha x_{n-k}+\frac{\delta x_{n-k}y_{n-(k+l)}}{\beta y_{n-(k+l)}}+\gamma x_{n-l}, \]   where $n\in \mathbb{N}_{0},$ $k$ and $l$ are positive integers, the parameters $a$, $b$, $c$, $d$, $\alpha $, $\beta $, $\gamma $, $\delta $ are real numbers and the initial values $x_{-j}$, $y_{-j}$, $j=\overline{1,k+l}$, are real numbers, can be solved in the closed form. We also determine the asymptotic behavior of solutions for the case $l=1$ and describe the forbidden set of the initial values using the obtained formulas. Our obtained results significantly extend and develop some recent results in the literature.
Rings for which every cosingular module is discrete
Authors: TALEBİ Yahya , MONİRİ HAMZEKOLAEE Ali Reza , HARMANCI Abdullah , ÜNGÖR Burcu
Published: February 2020

In this paper we introduce the concepts of $CD$-rings and $CD$-modules. Let $R$ be a ring and $M$ be an $R$-module. We call $R$ a $CD$-ring in case every cosingular $R$-module is discrete, and $M$ a $CD$-module if every $M$-cosingular $R$-module in $\sigma[M]$ is discrete. If $R$ is a ring such that the class of cosingular $R$-modules is closed under factor modules, then it is proved that $R$ is a $CD$-ring if and only if every cosingular $R$-module is semisimple. The relations of $CD$-rings are investigated with $V$-rings, $GV$-rings, $SC$-rings, and rings with all cosingular $R$-modules projective. If $R$ is a semilocal ring, then it is shown that $R$ is right $CD$ if and only if $R$ is left $SC$ with $Soc(_{R}R)$ essential in $_{R}R$. Also, being a $V$-ring and being a $CD$-ring coincide for local rings. Besides of these, we characterize $CD$-modules with finite hollow dimension.
A classification for bicyclic and tricyclic graphs with respect to Tutte polynomial
Authors: YARAHMADİ Zahra , MİR Shiva
Published: February 2020

The Tutte polynomial of a graph is a polynomial in two variables defined for every simple graph contains information about how the graph is connected. We prove some formulas for computing Tutte polynomial of bicyclic and tricyclic graph and finally classify tricyclic graph with respect to Tutte polynomial.**********************************************************************************************************************************************************************************************************************************************************
Fractional order mixed difference operator and its applications in angular approximation
Authors: AKGÜN Ramazan
Published: February 2020

Lebesgue spaces are considered with Muckenhoupt weights. Fractional order mixed difference operator is investigated to obtain mixed fractional modulus of smoothness in these spaces. Using this modulus of smoothness we give the proof of direct and inverse estimates of angular trigonometric approximation. Also we obtain an equivalence between fractional mixed modulus of smoothness and fractional mixed K-functional.********************************************************************************************************************
A subclass of univalent functions associated with $q$-analogue of Choi-Saigo-Srivastava operator
Authors: WANG Zhi-gang , HUSSAİN Saqib , NAEEM Muhammad , BAKHAT Tahir , KHAN Shahid
Published: February 2020

The main objective of the present paper is to define a subclass $Q_{q}(\lambda,\mu,A,B)$ of analytic functions by using subordination along with the newly defined $q$-analogue of Choi-Saigo-Srivastava operator. Such results as coefficient estimates, integral representation, linear combination, weighted and arithmetic means, and radius of starlikeness for this class are derived.**********************************************************************************************************************************
Coarse equivalences of functorial constructions
Authors: Romanskyi Mykhailo
Published: February 2020

We consider the question of coarse equivalence of some functorial constructions (in particular, symmetric powers, hypersymmetric powers) in the category of metric spaces.
Poupança externa e crescimento econômico brasileiro: uma análise de duas visões díspares
Authors: FARO KELLY CARDOSO , SILVA CLEOMAR GOMES DA
Published: February 2020

RESUMO O objetivo do estudo é verificar empiricamente uma dicotomia na literatura econômica. A visão clássica alega ser possível e viável o crescimento com poupança externa, enquanto uma linha de pensamento crítico advoga que o influxo de recursos externos afeta os investimentos internos no curto prazo, quando o faz, sendo irrelevantes no longo prazo. A fim de buscar corroborações empíricas para a discussão posta nos valemos de modelos ARDL, aplicados à cointegração, com dados trimestrais, para o período 1999:4 a 2017:4. Os resultados indicaram uma aproximação ao entendimento da visão crítica, dado que a poupança externa não se apresentou estatisticamente significativa no longo prazo na explicação do crescimento econômico brasileiro.
The consequences of the international financial crisis and the great recession in Argentina and Brazil
Authors: HAINES ANDRÉS ERNESTO FERRARI , FERRARI-FILHO FERNANDO , NEYRA HERNAN
Published: February 2020

ABSTRACT The 2007-2008 international financial crisis (IFC) and the ‘Great Recession’ (GR) had worldwide effects. In the case of Argentina and Brazil, the reduction and improvement in composition of public external debt, the previous policy of international reserves accumulation combined with left-wing political affinity between governments, provided some space for countercyclical macroeconomic policies. Consequently, its governments were able to face the IFC and GR without following traditional tightened or pro-cyclical macroeconomic policies. This article examines the consequences of the IFC and the GR in Argentina and Brazil and the countercyclical macroeconomic policies that were implemented during the period 2009-2014.
Chinese industrialization from the New-Developmental perspective
Authors: MILARÉ LUÍS FELIPE LOPES
Published: February 2020

ABSTRACT The main objective of this paper is to present a synthesis of the Chinese industrialization and evaluate if the New-Developmental Theory is capable of explaining the transformation in its industrial structure. In order to do so, first will be presented a brief review of the New-Developmental Theory; next, through a historical perspective, we’ll describe the Chinese industrialization exposing the convergence points with the theory. Finally, we conclude that the theory is adequate to explain the success of the Chinese industrialization.
Edaphic mesostigmatid mites (Parasitiformes, Mesostigmata) in a region of the Pampa biome of the state of Rio Grande do Sul, Brazil
Authors: Duarte Adriane da Fonseca , Moreira Grazielle Furtado , Cunha Uemerson Silva da , Siqueira Paulo Ricardo Ebert , Moraes Gilberto José de
Published: February 2020

ABSTRACT: The diversity of edaphic mites in Brazilian natural environments is little known, especially in the Pampa biome, in southern region of Brazil. The objective of this study was to evaluate the diversity and abundance of edaphic fauna of mesostigmatid mites in a region of the Pampa biome of the state of Rio Grande do Sul. Soil samples were collected in the municipality of Aceguá, in 2012 and 2013. Mites were extracted using Berlese-Tullgren modified funnels. In total, 1900 mesostigmatid mites were collected, representing 44 species from 23 genera and 10 families. The most abundant families were Rhodacaridae, Ologamasidae and Laelapidae, with respectively 903, 578 and 214 specimens, corresponding respectively to 47.5, 30.4 and 11.3% of the Mesostigmata collected. Laelapidae was the most diverse family, being represented by 22 species. The remaining families were each represented by 1-5 species. Gaeolaelaps (Laelapidae) was the most diverse genus, with 14 species. Rhodacaridae was represented by a single species, Binodacarus aceguaensis Duarte, Castilho, Cunha & Moraes, representing 47.5% of the mesostigmatids. Ologamasidae was represented by four species, with Neogamasellevans sp. corresponding to the second most abundant species, representing 27.5% of the mesostigmatids. Further analysis of the data, in terms of mite identification to species level and the potential use of the mites collected for applied biological control are needed.
Hummingbird (Aves: Trochilidae) assemblage using resources from the exotic African tuliptree, Spathodea campanulata (Bignoniaceae) in a Neotropical altered environment, southeastern Brazil
Authors: Pimenta V. R. A. , Dias M. M. , Reis M. G.
Published: February 2020

Abstract The non-native African tuliptree, Spathodea campanulata (P. Beauv), is widely distributed in altered Neotropical environments, where hummingbirds are important pollinators. We investigated the assemblage of hummingbirds which fed on its nectar and described their behavior, to understand possible influences of the exotic tree on the territorial behavior in an altered environment in southeastern Brazil. Seven species fed on flower resources, mainly Eupetomena macroura (Gmelin, 1788), Amazilia lactea (Lesson, 1832), and Florisuga fusca (Vieillot, 1817). Visiting time was positive correlated with number of flowers accessed, but in most visits, hummingbirds get the nectar by pillage, instead of frontal access. Flower availability varied throughout months; however, we found no evidence of significative correlation between available flowers and number of agonistic encounters. Despite a high number of animal-plant interactions and a strong territorialism of some species observed in African tuliptree foraging site, there may be other plants at local scale influencing the behavioral patterns observed.
A influência da Escola de Chicago na produção científica nacional em Ciência da Informação
Authors: VIEIRA Keitty Rodrigues , KARPINSKI Cezar
Published: February 2020

Resumo Denomina-se “Escola de Chicago” o movimento intelectual constituído no Departamento de Sociologia da Universidade de Chicago entre os anos 1920 e 1930 e que se estendeu também à Biblioteconomia. Nessa área, fizeram parte do movimento autores como Lee Pierce Butler, Jesse Hauk Shera e Lester Eugene Asheim, que defenderam uma epistemologia pragmatista como fundamento da Biblioteconomia. Esta perspectiva deixou como legado uma prática humanística no fazer biblioteconômico que, em útima instância, influenciou também a constituição epistemológica da Ciência da Informação. Nesse sentido, este artigo apresenta resultados de uma pesquisa cujo objetivo geral foi o de identificar a influência da Escola de Chicago na produção científica nacional em Ciência da Informação. Especificamente, os objetivos foram: verificar, por meio da Classificação JITA, em quais subáreas da Ciência da Informação os autores brasileiros mais utilizam os recursos teórico-metodológicos da Escola de Chicago e refletir sobre as contribuições do movimento da Escola de Chicago nas publicações encontradas. Metodologicamente, a pesquisa foi qualitativa e exploratória, do tipo bibliográfica, sem delimitação cronológica e organizada em três bases de dados. Como resultado, apresenta-se um corpus documental de 25 artigos, dos quais a maioria foi publicada entre 2003 e 2018 e em revistas Qualis A1, A2 e B1. Conclui-se que a influência da Escola de Chicago na produção científica da área da Ciência da Informação no Brasil dá-se no âmbito teórico, e não no prático, como sugere a vertente pragmatista que norteia o próprio movimento.
Formação de Professores e Método de Ensino para Crianças Surdas
Authors: RODRIGUES Ednalva Gutierrez , GONTIJO Cláudia Maria Mendes , DRAGO Rogério
Published: February 2020

RESUMO: Este artigo discute a proposta de formação de professores e os embasamentos do método adotado para ensinar crianças surdas, no período de 1951 a 1961, quando Ana Rímoli de Faria Dória esteve na direção do Instituto Nacional de Educação de Surdos (INES). Com base na concepção de história de Marc Bloch, elegeu-se como metodologia a pesquisa histórica. Foram analisados discursos registrados nos Anais da 1ª Conferência Nacional de Professores de Surdos, realizado no INES, em 1959, e textos auxiliares. Os resultados apontam que a concepção de educação, fundamentada na correção da deficiência, dialogou com concepções teóricas que circulavam naquela época, influenciando a formação de professores, pois estes deveriam ensinar as crianças surdas a oralização e a leitura labial, conforme princípios do Método Oral Puro, adotado em todo o território nacional.