bluuebunny/crossref_metadata_2025 huggingface dataset:
"Ius publicum i ius privatum" w poglądach tzw. romanistyki marksistowskiej (przykład Czechosłowacji)
Authors: Czech-Jezierska Bożena Anna
Published: July 2020

Pojęcia prawa publicznego i prywatnego są wciąż problematyczne, ta kwestia była również przedmio­tem dyskusji w państwach socjalistycznych. Powszechnie przyjmuje się, że idea tego podziału sięga rodowodem prawa rzymskiego. Ideologia socjalistyczna zasadniczo nie znajdowała miejsca dla prawa rzymskiego w systemie prawnym, który odrzucał rozwój własności prywatnej na rzecz szerokiej in­gerencji państwa w stosunki prywatno-prawne i nie dopuszczał wpływów ze strony zasad prawnych państwa ustroju niewolniczego, sprzecznego z ideą socjalizmu. Opierała się ona na materializmie hi­storycznym i dialektycznym oraz związana była z nieuniknioną walką klas w społeczeństwie. W ro­manistyce prawniczej wyodrębniono dwa kierunki – romanistyki tradycyjnej, określanej jako „burżu­azyjna”, i młodej romanistyki marksistowskiej. Celem autorki artykułu jest zaprezentowanie w sposób syntetyczny poglądów na tę dychotomię, najdobitniej wyrażanych przez romanistów marksistowskich z Czechosłowacji na tle dyskusji o przydatności tegoż podziału w państwach socjalistycznych.
PENGEMBANGAN BAHAN AJAR MEMBACA PEMAHAMAN DENGAN METODE SQ3R PADA SISWA KELAS VII SMP KENDAL
Authors: Eriyati Eriyati , Suwandi Suwandi , Umaya Nazla Maharani
Published: July 2020

Artikel berikut membahas hasil penelitian meliputi hasil analisis kebutuhan lapangan, Desain produk bahan ajar membaca pemahaman dengan metode Survey, Question, Read, Recite, Review (SQ3R), Hasil validasi ahli dan uji coba, dan tahap evaluasi. (1) Hasil analisis kebutuhan lapangan menunjukkan bahwa pembelajaran membaca pemahaman di sekolah masih banyak membutuhkan materi-materi yang khusus mempelajari membaca pemahaman dengan menggunakan model pembelajaran. (2) Desain produk bahan ajar membaca pemahaman dengan metode Survey, Question, Read, Recite. Review ( SQ3R) dirancang berdasarkan karakter pengembangan bahan ajar, kajian teoritik, kebutuhan-kebutuhan, dan analisis bahan ajar yang sudah ada. selain itu bahan ajar juga disusun berdasarkan kurikulum yang sedang berlangsung. (3) Bahan ajar kemudian dilakukan konsultasi untuk validasi  dan revisi produk oleh pakar. Konsultasi terhadap produk yang akan diujicobakan dilakukan dengan pakar untuk mendapat komentar, saran dan persetujuan.(4) Tahap evaluasi dilaksanakan berdasarkan revisi hasil uji coba produk awal, kemudian dilakukan uji coba produk utama untuk menganalisis perbedaan antara bahan ajar yang sudah ada dengan bahan ajar yang baru yang telah dikembangkan.
DETERMINATION OF THE URANIUM CONTENT IN SOME SOIL SAMPLES FROM AJAOKUTA, KOGI STATE: NIGERIA
Authors: Arome Aruwa , Gyuk Philibus Musa , Ogwo Achor Mathias , Suleiman Isah
Published: July 2020

This work present the Uranium (238U) content in soil samples collected in Ajaokuta from some villages was been determined. The measurement of the soil Uranium activity concentration were made using a multi–channel pulse height analyzer (Camberra series 10 plus) coupled to a 76.2mm x 76.2mm NaI (TI) scintillation detector. 2.93)The mean Uranium content in the analyzed samples was found to be (44.26 Bq/kg which is higher than the world mean value of 35Bq/kg. The results were in good agreement with others for soils from region which is considered as normal or slightly high in radioactivity level.
Pakistan-Ukraine. Analogies in the Triangles of Regional Security Complexes
Authors: Kotlyar Yuriy , Lymar Marharyta , Tykhonenko Iryna
Published: July 2020

The paper deals with two countries – Pakistan and Ukraine – that are located at the center of the following two interest triangles: India-Pakistan-Afghanistan (South Asia) and Russia-Ukraine-Moldova (post-Soviet regional security complex). Despite their considerable differences, they have similar problems with their geopolitical neighbours in the context of territorial conflicts. Existing issues with neighbouring countries give Pakistan and Ukraine the status of a ‘middle state’, which is characterized by threatening its territorial integrity and becoming an object of ‘penetrating’ into its RSC (regional security complex) for the states from neighbouring regions.
Wreckage, War, Woman. Fragments of a Female Self in Zhang Ailing’sLove In a Fallen City(倾城之恋)
Authors: Di Muzio Alessandra
Published: July 2020

This article examines wreckage and war as key elements in Zhang Ailing’s novellaQing cheng zhi lian倾城之恋 (Love in a Fallen City) exploring the strategies used by the female protagonist to engage on anüxing女性 ‘feminist’-oriented spatial quest for independence in a male-centered world. Analysed from a feminist perspective, these strategies emerge as potentially empowering and based on the idea of conflict/conquest while dealing with man and romance, but they are also constantly threatened by the instability of history and by the lack of any true agency and gender-specific space for women in the 1940s Chinese society and culture. By analysing the floating/stability dichotomy and the spatial configurations of Shanghai and Hong Kong as described in the novella, the author argues Zhang Ailing’s depiction of Chinese women while dealing with history, society and the quest for self-affirmation is left in-between wreckage and survival, oppression and feminism, revealing her eccentric otherness as a woman and as a writer with respect to socially committed literature.
Изменение продуктивности и показателей почвенного плодородия при применении приемов улучшения сенокоса
Authors: Тебердиев Далхат Малчиевич , Родионова Анна Владимировна , Запивалов Сергей Александрович
Published: July 2020

Увеличение производства и повышение качества объемистых кормов — необходимое условие в повышении эффективности интенсификации молочного скотоводства. Луговое кормопроизводство является составной частью решения этой проблемы. С целью определения эффективности приемов улучшения луговых угодий проведены долголетние исследования на дерново-подзолистых почвах Нечерноземной зоны (1993 – 2018 гг.). Установлены закономерности изменения продуктивности долголетних агрофитоценозов при различных уровнях применения минеральных и органических удобрений. Урожайность агрофитоценоза, используемого в течение 72 лет без перезалужения, без применения удобрений составила в среднем за последние 26 лет 3,3 т/га сухого вещества, на фоне N180P60K120 она повысилась в 2,5 раза, при внесении 20 т/га навоза (1 раз в 4 года) — в 1,5 раза. Долголетнее использование способствует накоплению от 20,2 до 23,5 т/га корневой массы в зависимости от системы удобрения. Установлена закономерность содержания элементов питания (фосфор и калий) в почве и надземной массе в зависимости от доз удобрений.
Социально-экономические условия развития социальной инфраструктуры села: региональный аспект
Authors: Лукашин Никита Александрович , Яркова Татьяна Михайловна
Published: July 2020

Определены основные социально-экономические условия развития социальной инфраструктуры села в привязке к региональному развитию. Ключевыми условиями экономического характера развития социальной инфраструктуры сельских территорий являются уровень развития экономики региона, направления региональной политики развития сельских территорий, уровень финансирования программ развития сельских территорий. К социальным факторам, влияющим на формирование инфраструктуры сельских территорий, относятся: традиционный образ жизни сельского населения, система расселения, территориальное местоположение сельских территорий относительно города, транспортная доступность и половозрастная структура сельского населения. Выделены факторы и проблемы, препятствующие формированию эффективной социальной инфраструктуры в селе и её развитию. Предложены направления, способствующие развитию социальной инфраструктуры села в современных условиях на основе системы социального партнёрства, предпринимательства и регионального правительства.
Out of COVID, a conference: lessons from creating a new, free, and entirely virtual academic meeting amidst a pandemic
Authors: Rich Scott , Diaconescu Andreea , Griffiths John David , Lankarany Milad
Published: July 2020

One potentially positive result of the movement towards virtual academic meetings, accelerated by the COVID-19 pandemic, is increased democratization of the creation, implementation, and attendance of academic conferences. Here we describe an early ``proof of principle" of this democratizing power via our experience organizing the Canadian Computational Neuroscience Spotlight (CCNS), a free two-day virtual meeting that was built entirely amidst the pandemic using only virtual tools. This meeting was unique not just in the challenges faced by creating a conference during a pandemic: it was crafted entirely by early-career researchers and without any sponsors or partners, advertised primarily using social media and ``word of mouth", and designed specifically to highlight and engage trainees. It is our hope that this success will encourage other young scientists to embrace the challenge of organizing their own unique conferences facilitated by the benefits of the digital space, further democratizing the landscape of academic meetings.
Aiming high no matter what? Educational Aspirations of Ethnic Minority and Ethnic Majority Youth in England, Germany, the Netherlands and Sweden
Authors: Rudolphi Frida , Salikutluk Zerrin
Published: July 2020

We examine cross-national variation in the ethnic gradient in aspirations among 14-year-olds in England, Germany, the Netherlands and Sweden by using data from the Children of Immigrants Longitudinal Survey in Four European Countries, collected in 2009/2010. Results show that most ethnic minority groups are more likely to have university aspirations than ethnic majority youth. The most consistent minority advantage is found in England and Sweden, consistent with the interpretation that the ample scope for choice in progression through these school systems allows high ambitions of minorities to play out well. However, minority advantage of some groups is also present in the Netherlands and Germany, where transitions are more heavily conditional on previous performance. The pattern for immigrant generational status varies across countries and ethnic origins. There is no consistent empirical evidence indicating that aspiration differences between ethnic minority and majority youth will diminish due to assimilation processes across the generations.
Structural, elastic, electronic and magnetic properties of Ni2MnSb, Ni2MnSn and Ni2MnSb0.5Sn0.5 magnetic shape memory alloys
Authors: Benguerine O. , Nabi Z. , Benichou B. , Bouabdallah B. , Bouchenafa H. , Maachou M. , Ahuja R.
Published: July 2020

Structural, elastic, electronic and magnetic properties of the Nickel-based magnetic shape memory alloys (MSMA) Ni2MnSb, Ni2MnSn and Ni2MnSb0.5Sn0.5, are investigated using the full-potential linearized plane wave plus local orbital method (FP-LAPW+lo). With Perdew-Burke-Ernzerhof (PBE) exchange-correlation, generalized gradient approximation (GGA) is used to describe the electronic exchange correlations energy. Equilibrium lattice constant, bulk modulus, and its pressure derivative are calculated and compared with available data. Using the total energy versus strain in the framework of the FP-LAPW+lo approach, we compute the elastic constants of the studied compounds in their austenite structure. Good agreement is found with other calculations both for Ni2MnSb and Ni2MnSn. Magnetic moments agree well with available results.
Flow of a viscous fluid over an infinite rotating and porous disk with stretching (shrinking) effects
Authors: Bilal Muhammad , Khan Marwat Dil Nawaz , Ali Aamir
Published: July 2020

A viscous flow is maintained over a porous and rotating disk. The porous disk is stretched (shrunk) with the non-uniform velocity in the radial direction. Note that the viscous fluid is injected (blown) normally with non-uniform velocity. The study is under taken by considering the combined and individual effects of injection (suction), stretching (shrinking) and rotation. The kinematics properties associated with the disk are depending upon the radial coordinate. The governing partial differential equations (PDE’s) are simplified and transformed into a new system of DE’s. The set of boundary value ODE’s is solved with the help of a numerical method. The transformed equations (presented over here) are new and to the best of authors knowledge, the equations are not published in literature. In particular cases, the modeled equations may reduce to the classical problems of rotating disk flows. The previous models of rotating disk flows with or without porosity and stretching (shrinking) effects are summarized into a single model. For fixed value of the governing parameters and different sizes of "infinity", no increase/decrease in the thickness of boundary layer is seen but the profiles of velocity components and pressure are significantly changed with the different levels of "infinity".
Performance and error modeling of Deutsch's algorithm in IBM Q
Authors: Buksman E. , Fonseca de Oliveira A. L. , Allende C.
Published: July 2020

The performance of quantum computers today can be studied by analyzing theeect of errors in the result of simple quantum algorithms. The modeling and char-acterization of these errors is relevant to correct them, for example, with quantumcorrecting codes. In this article we characterize the error of the ve qubits quantumcomputer ibmqx4 (IBM Q), using a Deutsch algorithm and modeling the error byGeneralized Amplitude Damping (GAD) and a unitary misalignment operation.
Assessment of water resources of the Ukrainian rivers according to the average statistical models of climate change trajectories RCP4.5 and RCP8.5 over the period of 2021 to 2050
Authors: Loboda N. S. , Kozlov M. O.
Published: July 2020

The relevance of the presented work is due to the necessity of assessment of a possible state of Ukrainian water resources in the 21st century according to climate change scenarios in order to justify the strategy of economic development.

The research object is presented by water resources of the Ukrainian rivers.

The research focuses on the effects of global warming on Ukrainian water resources in 2021-2050.

The work aims at assessing a possible impact of climate change on Ukrainian water resources in the 21st century, using the data from the climate change trajectories RCP4.5 and RCP8.5 over the period of 2021 to 2050.

Calculations of water resources over the period of 2021 to 2050 are performed according to the average statistical model from the ensemble consisting of 14 climatic models of the CORDEX experiment for the RCP4.5 and RCP8.5 trajectories. Water resources are assessed based on the Climate-runoff model developed by OSENU. The result of such calculations is the evaluation of moisture and heat resources, as well as water resources in the natural conditions of their formation. Natural (undisturbed by water management) average long-term annual runoff determined by the meteorological data is usually called "a climatic runoff". The accuracy of climatic runoff calculations using the map of isolines is ±10%. The calculations are performed in the grid nodes. The geographical location of the selected nodes corresponds to the location of meteorological stations the total number of which is 115.

Evaluation of heat, moisture and water resources changes was performed by comparing the calculated values and the basic ones. The climatic runoff for the period of observations before 1989 is thought to be basic.

According to the average statistical model of the RCP4.5 trajectory over the period of 2021 to 2050, the expansion of the semi-arid zone and insufficient humidification zone to the north is to be expected (when compared to the basic period). The insufficient humidification zone will expand to the northwest displacing the sufficient humidification zone. The reduction of water resources will reach to minus 40-50% in the south of the country and to 0% - minus 10% in the north. The area of water resources growth will be preserved in the Ukrainian Carpathians.

Comparing to the RCP4.5 the RCP8.5 trajectory is considered to be more “rigid” in relation to the state of Ukrainian water resources. The reduction of water resources will occur on the nearly entire territory, except Bukovyna, due to the increase of arid climate. Water resources will decrease to minus 50-60% in the south and to minus 30% in the north.

Both RCP4.5 and RCP8.5 trajectories offer a forecast of water resources that is unfavourable for the development of Ukrainian economy, as it will cause expansion of both semi-arid and insufficient humidification zones. This will increase the water resources shortage in Ukraine.
Forecasting sea level fluctuations caused by storm winds at the ports in Odesa Region of the north-western part of the Black Sea
Authors: Tuchkovenko Yu. S. , Matygin O. S. , Chepurna V. Yu.
Published: July 2020

Increasing the draught of ships that may be accepted by ports for loading at their loading berths is one of the main tasks aimed at development and freight turnover enhancement of sea trade ports located in Odesa Region of the north-western part of the Black Sea (cities of Chornomorsk, Odesa and Pivdennyi). An operational forecasting of short-term sea level fluctuations caused by storm winds presents a critical task for ensuring safe navigation across the ports’ water area and approach channels. The article is devoted to analysing and discussing the results of tests of a simplified 2D hydrodynamic model designed for forecasting such phenomena as upsurge and downsurge of the sea level caused by storm winds in the vicinity of sea ports in Odesa Region of the north-western part of the Black Sea. Spatio-temporal variability of wind conditions at the sea-to-atmosphere boundary was set based on the data retrieved from a 10-day synoptic forecast using global atmospheric prediction model GFS (Global Forecast System). The study analyses the results of forecast of significant (the ones exceeding 30 cm) short-term sea level drops and rises at the ports which were observed in 2016, 2017 and 2020.

It was established that, in case of use of the GFS forecast data, the pattern of sea level denivellations caused by storm winds and their amplitude in the majority of events start approximating to the observed values provided the forecast has a 4-day lead time. Therefore the accuracy of wind conditions variability forecast with application of the GFS model having a longer lead advance time is not sufficient for forecasting the sea level fluctuations caused by storm winds.  The study made it possible to get an acceptable equivalence between the values of sea level denivellation amplitudes which were forecast with a 1-to-3-day lead time and the ones observed afterwards. In particular, when the forecast lead time is equal to »2 days, in relation to the expected storm conditions, the average absolute error for the forecast of sea level fluctuations amplitude constituted 7-8 cm, while its permissible value was defined as 15 cm, and the average relative error – 16-18%. It allowed making a conclusion that a hydrodynamic model option, applied alongside with the forecasting information on wind conditions variability retrieved with the help of the GFS weather prediction model, may be used for operational forecasting of short-term sea level fluctuations caused by storm winds with the forecast lead time of up to 4 days.
DEVELOPMENT OF A LASER SCANNER FOR POLYMER GEL DOSIMETRY
Authors: Chacón D. , Romero M. , Mattea F. , Valente M.
Published: July 2020

Advances of the medical application of ionizing radiation, and specifically in cancer treatment, are continuously evolving and gaining higher degrees of complexity. Therefore, the ability to determine and ensure the safety and precision of these techniques must be accompanied by novel dosimetry systems. Polymer gel dosimetry is one of the new and re-markable dosimetry systems that can quantitatively record the absorbed dose and register 3D dose distributions with high resolution while maintaining tissue-equivalent properties. Typical methods used to read the recorded signal in a polymer gel dosimeter, such as magnetic resonance imaging, X-ray tomography, and ultrasound-based techniques in-clude complex and expensive instruments. On the other hand, there are low-cost alternatives like optical methods that can be optimized and designed for the study of polymer gel dosimetry. The objective of this study is to present the de-sign, construction, development, and characterization of a low-cost laser scanner for bi-dimensional PGD analysis. With this equipment, characterization and optimization assays were performed on typical samples, and compared to those obtained by commercial or validated instruments with similar results, proving the capacity of the designed instrument as a reading tool for polymeric gel dosimetry.
Against Analogy
Authors: Frega Roberto
Published: July 2020

This article asks whether the analogy between state and firm is a promising strategy for promoting workplace democracy and provides a negative answer, explaining why analogical arguments are not a good strategy for justifying workplace democracy. The article contends that the state-firm analogy is misguided for at least three reasons: (1) it is structurally inconclusive, (2) it is based on a category mistake, and (3) it leads us away from the central question we should ask, which is: What would concretely imply, and what is required, in order to democratize the workplace? I begin by offering an interpretation of the state-firm analogy which shows that use of the analogical argument in Dahl’s justification of workplace democracy engenders excessive and unnecessary theoretical costs which bear negatively on his conclusion. I then proceed to examine more recent contributions to the debate and show that supporters and critics of the state-firm analogy alike do not advance our understanding of the analogical argument. In the last part of the article I provide a general theoretical explanation of why arguments based on the state-firm analogy are not good candidates for defending workplace democracy.
Book Review
Authors: Ewert Christian
Published: July 2020

Joseph Lacey, Centripetal Democracy: Democratic Legitimacy and Political Identity in Belgium, Switzerland, and the European Union (Oxford: Oxford University Press, 2017), 312 pp., ISBN: 9780198796886
Trabajo Social en el programa “mis mejores años” del Ministerio de inclusión económica y social (mies).
Authors: ALAVA BARREIRO LEILA MARIA , Intriago Velásquez Ginger Katiuska
Published: July 2020

En el marco de los cambios globales, el Ecuador a través de su Constitución del 2008, reconoce a las personas adultas mayores como grupo de atención prioritaria, lo cual implica garantizar sus derechos mediante una atención especializada tanto en el ámbito público y privado, por lo que el objetivo de esta investigación consistió en caracterizar el rol del trabajador social en el Programa “mis mejores años” del MIES en la parroquia San Sebastián del cantón Pichincha, provincia de Manabí. La población y muestra objeto de estudio fue 75 adultos mayores beneficiarios del Programa “mis mejores años”. Se fundamentó en una investigación de tipo no experimental, se utilizó el método descriptivo-exploratorio, bibliográfico, de igual manera se aplicó la técnica de la entrevista dirigida a el trabajador social responsable de ejecutar este programa en la parroquia. Como resultado se destaca la labor esencial del profesional en la aplicación de instrumentos que permiten una detección temprana de problemas en el adulto mayor, y a modo de conclusión, la intervención del profesional permite al adulto mayor involucrase en una participación activa, creando un ambiente de respeto y de restauración de derechos, reduciendo las barreras de aislamiento, fomentando la recreación en este grupo de atención prioritaria
Composition of spherules and lower mantle minerals, isotopic and geochemical characteristics of zircon from volcaniclastic facies of the Mriya lamproite pipe
Authors: YATSENKO Ivan , SKUBLOV Sergey , LEVASHOVA Ekaterina , GALANKINA Olga , BEKESHA Sergey
Published: July 2020

The article presents the results of studying the rocks of the pyroclastic facies of the Mriya lamproite pipe, located on the Priazovsky block of the Ukrainian shield. In them the rock's mineral composition includes a complex of exotic mineral particles formed under extreme reduction mantle conditions: silicate spherules, particles of native metals and intermetallic alloys, oxygen-free minerals such as diamond, qusongite (WC), and osbornite (TiN). The aim of the research is to establish the genesis of volcaniclastic rocks and to develop ideas of the highly deoxidized mantle mineral association (HRMMA), as well as to conduct an isotopic and geochemical study of zircon. As a result, groups of minerals from different sources are identified in the heavy fraction: HRMMA can be attributed to the juvenile magmatic component of volcaniclastic rocks; a group of minerals and xenoliths that can be interpreted as xenogenic random material associated with mantle nodules destruction (hornblendite, olivinite and dunite xenoliths), intrusive lamproites (tremolite-hornblende) and crystalline basement rocks (zircon, hornblende, epidote, and granitic xenoliths). The studied volcaniclastic rocks can be defined as intrusive pyroclastic facies (tuffisites) formed after the lamproites intrusion. Obviously, the HRMMA components formed under extreme reducing conditions at high temperatures, which are characteristic of the transition core-mantle zone. Thus, we believe that the formation of primary metal-silicate HRMMA melts is associated with the transition zone D".
Sorption of nickel (II) and manganese (II) ions from aqueous solutions
Authors: KURDIUMOV1 Vasilii , TIMOFEEV Konstantin , MALTSEV Gennady , LEBED Andrey
Published: July 2020

Mine water from non-ferrous metal deposits is often contaminated with nickel and manganese ions. The entry of these ions, especially nickel, into surface waters and underground aquifers is undesirable since it has a negative effect on living organisms and worsens the condition of drinking water sources. One of the promising methods for selectively extracting nickel ions and obtaining an eluate suitable for further use is sorption by weakly acid cation exchangers with chelate groups of iminodiacetic acid.

As part of the study, sorption isotherms of nickel and manganese ions by Lewatit MonoPlus TP 207 cation exchanger in mono- and bicomponent systems were obtained. In monocomponent systems, the maximum static exchange capacity (SEC) of the cation exchanger for nickel ions is 952 mmol/dm3, and in bicomponent systems – 741 mmol/dm3; for manganese ions– 71 mmol/dm3 and 49 mmol/dm3, respectively. It is obvious that the studied cation exchanger has a greater capacity for nickel ions than for manganese ions.

The influence of a temperature increase from 300 to 330 K on the sorption of nickel and manganese ions was established: in monocomponent systems, the maximum degree of extraction of the former increases from 65 to 77 % (SEC from 337 to 399 mmol/dm3), and the latter from 21 to 35 % (SEC – from 140 to 229 mmol/dm3); in bicomponent systems, the extraction of nickel ions increases from 59 to 78 % (SEC – from 307 to 429 mmol/dm3), and manganese ions decreases from 20 to 17 % (SEC – from 164 to 131 mmol/dm3). The predominant increase in the indicators is due to the filling of the sorption centers of the ion-exchange resins, which are energetically unfavorable for the exchange of counterions at a lower temperature.

The influence of the pH of the solution on sorption was determined: the intensification of the process for nickel ions is observed in the pH range of 8.0-8.5 in a monocomponent solution and 8.0-9.0 in a bicomponent solution, for manganese ions in the range of 8.0-9.5 in both cases. The increase in the degree of extraction of ions and the exchange capacity of the ion exchanger with increasing pH is associated with the appearance of singly charged hydroxocations, dissociation of the functional groups of the sorbent and, to some extent, with the subsequent formation of insoluble forms of nickel and manganese. However, with increasing pH, a decrease in the selectivity of nickel extraction is observed: the ion separation coefficient decreases from 14.0 to 6.0 in the pH range of 6.0-11.0.
Promising model range career excavators operating time assessment in real operating conditions
Authors: IVANOV Sergey , IVANOVA Polina , KUVSHINKIN Sergey
Published: July 2020

The development prospects of the mining industry are closely related to the state and development of modern mining machinery and equipment that meet the technical and quality requirements of mining enterprises. Enterprises are focused on a quantitative assessment – the volume of mineral extraction, depending on the functioning efficiency of a promising series of mining machines, which include modern mining excavators. Downtime and unplanned shutdowns of mining excavators directly depend on the operating conditions of the mining machine, which has negative influence on the machine as a whole and its technical condition, which entails a decrease in the efficiency of using expensive mining equipment and economic losses of the mining enterprise.

The rationale for external factors that affect the operating time and technical condition of mining excavators is given. For a more detailed assessment of the influence of external influences on the efficiency of operation of mining machines, the influencing factors are divided into two groups: ergatic, directly related to human participation, and factors of a natural-technogenic nature, where human participation is minimized. It was revealed that factors of a natural-technogenic nature have the greatest influence. An algorithm is proposed for a comprehensive assessment of the technical condition and forecasting of operating time both in nominal and in real operating conditions, taking into account factors of a natural and technogenic nature.

It is proposed, based on the developed program for planning and evaluating the life of a mining excavator, to adjust the schedules for maintenance and repair (MOT and R) in order to minimize the number of unplanned downtime of a mining excavator and maintain it in good condition.
Monitoring of RBC rheology after cryopreservation to detect autologous blood doping in vivo? A pilot study
Authors: Bizjak Daniel A. , Grolle Andreas , Urena Javier Antonio Noriega , Bloch Wilhelm , Deitenbeck Robert , Grau Marijke
Published: July 2020

BACKGROUND: Autologous blood doping (ABD) is applied to improve performance capacity. ABD includes blood donation, red blood cell (RBC) storage at –80°C and re-infusion prior to or during competition. ABD is not directly detectable with current detection techniques. OBJECTIVE: Since cryopreservation is known to affect RBC physiology in vitro, the aim of the study was to examine whether these alterations are detectable in vivo. METHODS: Blood from six healthy male donors was transferred into conventional blood bags, cryopreserved, stored for 18 weeks at –80°C and re-infused with a RBC volume corresponding to ∼4% of total blood volume into respective donor. RBC physiology parameters were measured before blood donation/re-infusion, and 0/1/2/6/24/48/72 h and 1 w post re-infusion. RESULTS: RBC parameters and age markers were unaffected during intervention. RBC deformability increased from pre-blood-sampling to pre-re-infusion while deformability and viscosity values remained unaltered post re-infusion. RBC nitric oxide associated analytes, metabolic parameters and electrolyte concentrations remained unaffected. CONCLUSIONS: The data of this pilot study indicate that the increase in RBC deformability might be related to neoformation of RBC after blood donation. The lack of changes in tested parameters might be related to the low re-infused RBC volume which might explain differences to in vitro results.
COH, SRT22, and multiple functionals
Authors: Dzhafarov Damir D. , Patey Ludovic
Published: July 2020

We prove the following result: there is a family [Formula: see text] of subsets of ω such that for every stable coloring [Formula: see text] hyperarithmetical in R and every finite collection of Turing functionals, there is an infinite homogeneous set H for c such that none of the finitely many functionals map [Formula: see text] to an infinite cohesive set for R. This provides a partial answer to a question in computable combinatorics, whether [Formula: see text] is omnisciently computably reducible to [Formula: see text].
Amyloid-β Peptides Disrupt Interactions Between VAMP-2 and SNAP-25 in Neuronal Cells as Determined by FRET/FLIM
Authors: Sharda Nidhi , Pengo Thomas , Wang Zengtao , Kandimalla Karunya K.
Published: July 2020

Background: Synaptic dysfunction prevalent in Alzheimer’s disease (AD) brain is closely associated with increased accumulation of amyloid-β (Aβ) peptides in the brain parenchyma. It is widely believed that Aβ peptides trigger synaptic dysfunction by interfering with the synaptic vesicular fusion and the release of neurotransmitters, primarily facilitated by the SNARE protein complexes formed by VAMP-2, SNAP-25, and syntaxin-1. However, Aβ interactions with SNARE proteins to ultimately disrupt synaptic vesicular fusion are not well understood. Objective: Our objective is to elucidate mechanisms by which Aβ peptides perturb SNARE complexes. Methods: Intensity (qualitative) and lifetime (quantitative) based measurements involving Forster (fluorescence) resonance energy transfer (FRET) followed by fluorescence lifetime imaging microscopy (FLIM) were employed to investigate the effect of Aβ peptides on dynamic interactions between VAMP-2, labeled with cerulean (Cer) at the N-terminus (FRET donor), and SNAP-25 labeled with citrine (Cit) on the N-terminus (FRET acceptor). The FRET and FLIM interactions at the exocytosis locations on the pre-synaptic membrane were recorded under spontaneous and high potassium evoked conditions. Moreover, cellular accumulation of fluorescein labeled Aβ (F-Aβ) peptides and their co-localization with Cer-VAMP2 was investigated by confocal microscopy. Results: The F-Aβ40 and F-Aβ42 are internalized by differentiated N2A cells, where they colocalize with Cer-VAMP2. Both Aβ40 and Aβ42 decrease interactions between the N-termini of Cer-VAMP2 and Cit-SNAP25 in N2A cells, as determined by FRET/FLIM. Conclusion: By perturbing the N-terminal interactions between VAMP-2 and SNAP-25, Aβ40 and Aβ42, can directly interfere with the SNARE complex formation, which is critical for the docking and fusion of synaptic vesicles.
Weight Loss is a Preclinical Signal of Cerebral Amyloid Deposition and Could Predict Cognitive Impairment in Elderly Adults
Authors: Xu Wei ,   for the Alzheimer’s Disease Neuroimaging Initiative, Sun Fu-Rong , Tan Chen-Chen , Tan Lan
Published: July 2020

Background: Higher late-life body mass index (BMI) was associated with reduced risk of Alzheimer’s disease (AD), which might be explained by a reverse causal relationship. Objective: To investigate whether weight loss was a preclinical manifestation of AD pathologies and could be a predictor of cognitive impairment. Methods: A total of 1,194 participants (mean age = 73.2 [range: 54 to 91] years, female = 44.5%) from the Alzheimer’s Disease Neuroimaging Initiative (ADNI) were grouped according to AD biomarker profile as indicated by amyloid (A) and tau (TN) status and clinical stage by clinical dementia rating (CDR). BMI across the biomarker-defined clinical stages was compared with Bonferroni correction. Pearson correlation analysis was performed to test the relationship between the amyloid change by PET and the BMI change. Multiple regression models were used to explore the influences of amyloid pathologies on BMI change as well as the effects of weight loss on longitudinal changes of global cognitive function. Results: BMI was significantly decreased in AD preclinical stage (amyloid positive [A+] and CDR = 0) and dementia stage (A+/TN+ and CDR = 0.5 or 1), compared with the healthy controls (A–/TN–and CDR = 0, p < 0.005), while no significant differences were observed between preclinical AD and AD dementia. Amyloid PET change was inversely correlated with BMI change (p = 0.023, β= –14). Individuals in amyloid positive group exhibited faster weight loss (time×group interaction p = 0.019, β= –0.20) compared to the amyloid negative group. Greater weight loss predicted higher risk of developing cognitive disorders. Conclusion: Elders who experienced greater weight loss might belong to preclinical stage of AD and could be targeted for primary prevention of the disease.
The Clinical Features and Progression of Late-Onset Versus Younger-Onset in an Adult Cohort of Huntington’s Disease Patients
Authors: Anil Megha , Mason Sarah L. , Barker Roger A.
Published: July 2020

Background: Huntington’s disease (HD) is an autosomal dominant neurodegenerative disorder that typically manifests between the ages of 30 and 50 years. However, the disease can present at any age, and phenotypic differences between younger and later-onset patients have received limited attention. Objective: To compare clinical features of late- (>70 years of age) and younger-onset (<30 years of age) HD patients. Methods: Patients presenting to our regional NHS HD clinic with new-onset manifest HD diagnosed over the age of 70 years (LoHD) (n = 18) were compared with a younger cohort who developed disease under the age of 30 years (YoHD) (n = 12). Rate of progression over time on standard cognitive and motor measures was compared. Results: At first clinic presentation, both groups had the same total UHDRS scores. However, the LoHD group had higher chorea scores (F (1,28) = 6.52, p = 0.016), while the YoHD group had more dystonia (F (1,28) = 8.69, p = 0.006) and eye movement abnormalities (F (1,28) = 16.991, p < 0.001). The YoHD group also had a greater rate of motor progression, especially for bulbar measures (F (1, 28) = 6.96, p = 0.013) and bradykinesia (F (1, 28) = 7.99, p = 0.009). No differences were found in the rate of cognitive change (F (1,21) = 1.727, p = 0.203) nor functional capacity (F (1,28) = 1.388, p = 0.249) between the groups. Conclusion: Phenotypic differences between YoHD and LoHD patients were found in terms of initial presentation and rate of motor progression. This has implications for therapeutic trials involving HD patients of different ages, given their different clinical features and progression.
Intelligent traffic cloud computing system based on ant colony algorithm
Authors: Guo Xiaobo , Liu Yongping
Published: July 2020

With the growth of data volume in transportation system, requirements of big data technologies are rapidly increasing. This paper presented an improved ant colony algorithm by using data analysis technologies of cloud computing and data mining. And the influence of different spatio-temporal feature fusion methods on the steering wheel angle value of intelligent vehicles is explored by feature fusion method. Furthermore, time-constrained and space-constrained networks are utilized to extract the key features that affect the steering wheel angle value. Experimental results show that the proposed algorithm improves the efficiency of data processing and information search by 35%, comparing to traditional ant colony algorithm. It is very effective in the shortest path analysis of ITS. Our research shows that the application of real-time information in the logistics distribution system can make the planning process more dynamic and the prediction results closer to reality.
Data design and analysis based on cloud computing and improved K-Means algorithm
Authors: Wu Chunqiong , Yu Rongrui , Yan Bingwen , Huang Zhangshu , Yu Baoqin , Yu Yanliang , Chen Na , Zhou Xiukao
Published: July 2020

The IoT and Artificial intelligence, the amount of information generated on the Web site is increasing. The rise of the Hadoop distributed cloud computing platform (HDCCP) makes it possible to use multiple computing nodes for parallel computing to solve the performance problems of traditional serial algorithms. The purpose of this paper is to study data design based on cloud computing and improved k-means algorithm (KMA). This paper deeply researches Hadoop distributed cloud computing platform and clustering algorithm and other related technologies, and designs and implements a cluster analysis system (CAS) based on HP. And through an in-depth analysis of the problems existing in the KMA, an improved scheme based on the HDP is designed. The experimental environment was conFig.d with the cluster analysis system implemented. Finally, the improved KMPA was tested experimentally from four directions: convergence speed, acceleration ratio, initialization sampling rate, and accuracy rate. We can see the experimental results that the CAS based on the HDCCP designed in this paper can provide efficient and configurable cluster analysis services. In this paper, the correct rate is 90.7%.
Intelligent image recognition system for detecting abnormal features of scenic spots based on deep learning
Authors: Liu Kainan , Zhang Meiyun , Hassan Mohammed K.
Published: July 2020

To monitor the scene anomaly in real-time through video and image and identify the emergencies, try to respond quickly at the beginning of the emergency and reduce the loss. This paper mainly focuses on the realization of the image recognition system for the anomalous characteristics of tourism emergencies. The problem is to study the number of people in the scenic spot based on scenic spot monitoring. The video-based population anomaly monitoring method has improved the AUC index of the W-SFM method by 0.423, and the AUC has increased by 0.0844 compared with the optical flow method; Degree-enhanced algorithm (BCOF), by grasping the micro-blog data related to the scenic spot, comprehensively predicts the overall comfort of the current tourists in the scenic spot, and establishes a tourist state expression model. Compared with the BN algorithm and the NEG algorithm, the BCOF algorithm is the accuracy and the recall rate of tourists in the scenic spots was improved by 14% and 18% respectively. The image recognition system of tourism emergency anomaly was established, and the early warning model of tourism emergency based on group intelligence perception was used to implement early warning on scenic spots. Monitoring, can achieve an overall accuracy of 83.33%, the model has a strong predictive ability, and achieves a scenic spot Real-time monitoring of events.
Large-scale dynamic social data representation for structure feature learning
Authors: Zhang Xiaoxian , Zhang Jianpei , Yang Jing
Published: July 2020

The problems caused by network dimension disasters and computational complexity have become an important issue to be solved in the field of social network research. The existing methods for network feature learning are mostly based on static and small-scale assumptions, and there is no modified learning for the unique attributes of social networks. Therefore, existing learning methods cannot adapt to the dynamic and large-scale of current social networks. Even super large scale and other features. This paper mainly studies the feature representation learning of large-scale dynamic social network structure. In this paper, the positive and negative damping sampling of network nodes in different classes is carried out, and the dynamic feature learning method for newly added nodes is constructed, which makes the model feasible for the extraction of structural features of large-scale social networks in the process of dynamic change. The obtained node feature representation has better dynamic robustness. By selecting the real datasets of three large-scale dynamic social networks and the experiments of dynamic link prediction in social networks, it is found that DNPS has achieved a large performance improvement over the benchmark model in terms of prediction accuracy and time efficiency. When the α value is around 0.7, the model effect is optimal.
Semantic - based service discovery in grid environment
Authors: Shang Kun
Published: July 2020

In the process of informatization, there are also some new problems, mainly information can’t be shared and integrated, distributed resources can’t be used effectively, these problems make the industry face new challenges. The goal of this paper is to combine the grid technology and ontology organically, to build a unified information system integration and interoperation platform based on semantics, to realize information sharing and accelerate the pace of informatization. The method is to construct the whole structure of the system according to the actual needs of the system. This paper firstly analyzes the current research status and existing problems of semantic grid service matching, and proposes a semantic layered matching algorithm based on Massimo Paolucci elastic matching algorithm. To verify the feasibility and effectiveness of the hierarchical matching algorithm based on semantics, a prototype system named SGSM was designed and its functional model, matching process and performance were studied. Experimental results show that for the semantic-based hierarchical matching algorithm proposed in this paper, the threshold value of service semantic correlation degree is 0.84, the threshold value of service basic concept matching degree is 0.89, the threshold value of service comprehensive similarity degree is 0.66, and the threshold value of service quality matching degree is 0.78. Statistics through the experiment, the above three methods of recall, respectively, 33%, 62%, 85%, the precision is respectively: 29%, 57%, 88%, and illustrate the hierarchical matching algorithm based on semantic is feasible in practical application, compared with the traditional service based on keyword matching algorithm and Massimo Paolucci elastic matching algorithm on the recall and precision are improved significantly.
Po engineering safety monitoring and control system based on image quality analysis
Authors: Nie Zhongchun , Tao Weijun , Huan Shi
Published: July 2020

Nowadays, urbanization has become a trend, and the realization of urbanization cannot be separated from the implementation of various projects. In the process of project implementation, the most critical issue is safety, so it is extremely necessary to monitor the project safety. Traditional manual monitoring cannot meet the development of today’s project, and the design of an automatic monitoring system for project safety has become a hot spot. In this paper, based on image processing and monitoring technology, and engineering safety monitoring and control system based on image quality analysis is studied, which can detect the engineering safety in real-time. Firstly, the image acquisition equipment is used to collect engineering images, and image processing is carried out to improve the image quality. Secondly, the convolutional neural network is used to realize image security analysis and detect the unsafe risk in engineering. Finally, combined with network technology, the automatic monitoring and control system of engineering safety based on image quality analysis is realized. Through simulation analysis, it is found that image processing can effectively remove noise and other interference and improve image quality. And the convolutional neural network can effectively detect the safety problems in the project, which shows that the design and implementation of the project safety monitoring and control system, it can achieve real-time safety monitoring in the implementation of the project, and has a good application effect in the project safety monitoring.