bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sacred Music in Igor Stravinsky’s work. Symphony of Psalms
Authors: Farcaş Viviana 
Published: May 2022

Abstract
Researching the music of the Russian composer Igor Stravinsky, devoutness is not the first attribute that I have offered it. He has remained in collective memory rather as a music revolutionary, not at all a pious spirit, bent towards divinity. The modernism of his works, the tendencies that he was the first to impose but especially the scandal that chaperoned him ever since the 1913 premiere of the ballet The Rite of Spring, all these have imposed him as a “rebel” of music in the early 20th century. The composer nevertheless claimed that his music was not modern but traditional. The order and discipline which constituted the pillars of his compositions go hand in hand with his claim, the return to tradition and his love for the ancient leading audiences towards the discovery of his mystical, religious side. A far too little explored direction in that period laden with marked social and cultural events was the composition of religious music. Too few of Stravinsky’s opera were inspired from sources of this nature – this is exactly why the discovery of and finding their meanings is important. One of the representative opera of this compositional direction is represented by Symphony of Psalms, considered to be a masterpiece placed in Stravinsky’s neoclassical compositional period. The work wanted to be a return to Christian values through a musical language adapted to the times, the music being led in the spirit of the Gregorian chant, simply, to which a text in the Latin language was added. The lines of the psalms chosen in order to be capitalised on underline his predilection for the complexity of religious feelings, departing from humble imploration to glorification. Thus, although this work firstly reflects a personal religious experience, at the same time it suggests the unbounded expression of constancy in faith of a community, which seems to participate in a collective prayer.
Improvised musical performance as conversational language in jazz
Authors: Campău Elisabeta Firtescu 
Published: May 2022

AbstractMusical interpretation, in the form of the act of spontaneous composition, defined jazz throughout its stylistic evolution. Unlike other serious music, jazz has crystallised mainly due to the creative act of musical interpretation and less to the process of written musical construction. Within this cerebral musical genre, the act of performing took over as the fundamental role in the artistic communication between jazz musicians and audience but it especially took the form of an interrelation in the collective musical interpretation. The act of musical improvisation, in terms of jazz, is controlled by certain stylistic parameters, associated with form, phrasing and timbre, constantly relating to the harmonic, rhythmic and melodic planes. The standardisation of these parameters transformed jazz into a conversational musical language, which allows constant and organised communication between musicians through the phenomenon ofinterplay(the interaction of performers during the collective interpretive act). The principles ofinterplayare also integrated in the solo interpretation, especially in the case of pianists, who always improvise referring to the context and the relationship created between the accompaniment and the melodic plane. At the same time, just like verbal communication, mastering the jazz language involves reaching the level of free speech, with a spontaneous and contextual expression. This freedom of artistic expression involves the assimilation of the jazz language, creating a personal vocabulary and its use as a means of constructing authentic (spontaneously created) and eloquent musical discourses. Jazz language cannot be assimilated only through individual study, as is possible in the serious music of European tradition. The study and improvement of jazz musicians constantly depends on artistic socialisation and musical conversation. Jazz is a musical genre in continuous transformation, due to the fact that it is definitely more of an act of interpretation than of a compositional one. Jazz imposed musical interpretation as having the same contribution of creation with the compositional act, in terms of stylistic definition and crystallisation of an elaborated musical current or genre.
Study of subjective and objective quality assessment of infrared compressed images
Authors: Zelmati Omar , Bondžulić Boban , Pavlović Boban , Tot Ivan , Merrouche Saad 
Published: May 2022

Abstract
Given the lack of accessible infrared compressed images’ benchmarks annotated by human subjects, this work presents a new database with the aim of studying both subjective and objective image quality assessment (IQA) on compressed long wavelength infrared (LWIR) images. The database contains 20 reference (pristine) images and 200 distorted (degraded) images obtained by application of the most known compression algorithms used in multimedia and communication fields, namely: JPEG and JPEG-2000. Each compressed image is evaluated by 31 subjects having different levels of experience in LWIR images. Mean opinion scores (MOS) and natural scene statistics (NSS) of pristine and compressed images are elaborated to study the performance of the database. Five analyses are conducted on collected images and subjective scores, namely: analysis by compression type, analysis by file size, analysis by reference image, analysis by quality level and analysis by subject. Moreover, a wide set of objective IQA metrics is applied on the images and the obtained scores are compared with the collected subjective scores. Results show that objective IQA measures correlate with human subjective results with a degree of agreement up to 95 %, so this benchmark is promising to improve existing and develop new IQA measures for compressed LWIR images. Thanks to a real-world surveillance original images based on which we analyze how image compression and quality level affect the quality of compressed images, this database is primarily suitable for (military and civilian) surveillance applications. The database is accessible via the link: https://github.com/azedomar/compressed-LWIR-images-IQA-database. As a follow-up to this work, an extension of the database is underway to study other types of distortion in addition to compression.
Smart DTC algorithm with automatic torque ripple adjustment
Authors: Rosić Marko , Koprivica Branko , Bjekić Miroslav 
Published: May 2022

Abstract
The paper presents a direct torque control method with possibilities of automatic algorithm modification in terms of torque ripple reduction. The algorithm is based on the conventional switching table with an arbitrary number of discretized voltage levels allowing higher space-voltage resolution and consequently lower torque ripple. The number of available voltage levels can be easily changed and subsequently torque ripple reduced without the need to modify the conventional switching table. Appropriate algorithm modifications leading to torque ripple reduction are automatized, making this kind of control method simple, effective, and suitable for upcoming smart drives in the rapidly growing industry 4.0. Selective back electromotive force compensation can also be part of automatization with the aim to improve the drive dynamics. Experimental validation presented in the paper confirms improvements in torque ripple reduction retaining the simple and time-effective control structure of the induction machine DTC drive.
Decentralized controlled charging and vehicle-to-grid solution for voltage regulation in low voltage distribution systems
Authors: Zdraveski Vasko , Angelov Jordanco , Krstevski Petar , Mateska Aleksandra Krkoleva , Vuletic Jovica , Todorovski Mirko 
Published: May 2022

Abstract
This paper offers affordable controlled charging and a vehicle-to-grid solution that uses a non-smart power meter. Additional communication infrastructure in the low-voltage distribution network is not needed. Ladder logic control is developed to be easily implemented by any commercial programmable logic controller. The voltage values measured by the power meter and electric vehicle battery state of charge are the decision variables. A validity check based on the Monte Carlo method is conducted to test the effectiveness of the proposed solution. Electric vehicle charging requirements are simulated based on travel surveys. The results demonstrate the effectiveness of the proposed solution. The voltage level is kept within acceptable limits according to the power quality standard EN50160. One may argue that there is a mismatch between the rate of penetration of electric vehicles and the level of smart grid implementation, especially in developing countries with higher rates of wealth inequality. Therefore, the methodology presented in this paper can be seen as an affordable mid-way solution that will help distribution system operators in developing countries prepare for higher penetration levels of EVs.
Multi-UAV integrated HetNet for maximum coverage in disaster management
Authors: Khan Amina , Gupta Sumeet , Gupta Sachin Kumar 
Published: May 2022

Abstract
This article presents a practical method for the 3D placement of a group of HetNet of unmanned aerial vehicles (UAV)-mounted base station (mBS) to offer maximum wireless connectivity and coverage for terrestrial users in a particular region. There are two ways to solve this issue. First, the ideal flying height for each UAV is determined based on the transmit power of the UAV, which offers the maximum ground coverage radius. Depending on their ideal flying altitudes and transmitting power, UAVs are divided into several categories. Given a collection of UAVs, the proposed approach identifies an optimum subset of the available UAVs and places them optimally in 3D to offer maximum coverage of the network for a particular area on the terrestrial ground while using the least amount of power. The results of the simulations show that the suggested approach is effective, and they also give important visions about the behavior of the HetNet supported UAVmBS cell subnetworks.
Probabilistic three-phase power flow in a distribution system applying the pseudo-inverse and cumulant method
Authors: Bogovič Jerneja , Pantoš Miloš 
Published: May 2022

Abstract
A new, analytical approach using the cumulant method is proposed for the three-phase probabilistic power-flow (PPF) analysis. The approach to forming the sensitivity matrix is based on quantifying the pseudo-inverse instead of the inverse jacobian matrix, since it is commonly singular in a distribution power network. The results are compared with those obtained using the point-estimate method (PEM) and the Monte Carlo (MC) method, which is a commonly used reference method for the PPF analysis in a distribution power network.
Spectral and energy efficiency trade-off in massive MIMO systems using multi-objective bat algorithm
Authors: Gül Burak Kürşat , Taşpınar Necmi 
Published: May 2022

AbstractThe rise in the usage of wireless communication increases the cellular communication by the same rate. With the continuation of this situation, the density in data traffic has the potential to cause problems in the near future. Coping with spectral efficiency-energy efficiency trade-off using massive MIMO systems is considered to be a reasonable solution to this problem. In this paper, cellular communication simulations were performed in cases with different number of users, number of antennas and transmission power of massive MIMO systems and then non-dominated solutions are determined. Multi-objective bat algorithm has been used to make this process much shorter. At last stage, performance of this algorithm is compared with various intelligent optimization algorithms and with ideal non-dominated solutions. When the algorithms are compared with each other, it is seen that multi-objective bat algorithm has the best performance among them.
Observability, controllability and stability of a nonlinear RLC circuit in form of a Duffing oscillator by means of theoretical mechanical approach
Authors: Civelek Cem 
Published: May 2022

Abstract
In this research article, observability, controllability and stability of a nonlinear RLC circuit with a nonlinear capacitor is investigated as a Duffing oscillator beginning with the dissipative equations of generalized motion using Lagrange-dissipative model ({L, D} -model briefly). The force related to the potential energy, equilibria, and their well known stability properties are given using state space approach. Prerequisite that the condition for a Legendre transform is fulfilled, for the same system, also Hamiltonian of the system is found. Using Hamiltonian and dissipation function, dissipative canonical equations are obtained. These equations are written in state space form. Then the equality to the same results obtained using the dissipative equations of generalized motion related equilibria and their stability was shown. Thus a Lyapunov function as residual energy function (REF) is justified in terms of stability of the overall system. As last step, different electrical and mechanical (physical) realization possibilities are discussed.
Influence of temperature on detectable minimum rotation rate in i-FOGs using Er-doped SFSs
Authors: Saǧ Emirhan , Günday Abdurrahman , Yılmaz Güneş 
Published: May 2022

AbstractIn this study, an interferometric fiber optic gyroscope (I-FOG) model exploiting the double-pass backward (DPB) erbium-doped superfluorescent fiber source (SFS) with both thin-film filter (TFF) and fiber bragg grating (FBG) reflectors has been constructed and the effects of temperature variations on mean wavelength and detectable minimum rotation rate (DMRR) have been theoretically analyzed. the simulations corresponding with the relations between these parameters for temperature variations in the range of −60 °C to + 90 °C, have been performed using Matlab 2021b. DMRR variations have been found as 6.01 ppm/K and 3.83 ppm/K for the system with TFF, whilst they are 15.31 ppm/K and 1.58 ppm/K for the system with FBG.
Investigation of field free region formed by dual Halbach array for focused magnetic hyperthermia
Authors: Küçükdermenci Serhat 
Published: May 2022

Abstract
One of the challenges with magnetic fluid hyperthermia (MFH) is the limited control of magnetic nanoparticle (MNP) oscillations. To overcome this problem new approaches such as localization of MNP oscillations are being explored. In this study, we investigated the manipulation of field free region form by dual Halbach array displacements. We used finite element method simulation to examine gradient patterns in the workspace. Then, we created an experiment platform and took point probe measurements. As a result of the research, it was found that the field free region form can be manipulated by parametric distance changes of dual Halbach array. According to the findings, the field free region can expand and its shape can change from a point-like form to an ellipse-like surface by varying the distance between the arrays. The mapping of dual Halbach array generated gradient patterns for focused MFH was investigated for the first time in this study.
Geological and palaeogeographical peculiarities of the Adamów Graben area, central Poland
Authors: Widera Marek , Dzieduszyńska Danuta , Petera-Zganiacz Joanna 
Published: May 2022

AbstractFrom a geological and palaeogeographical point of view, the area of the Adamów Graben in the vicinity of Turek ranks amongst the best known in central Poland, with several opencast mines located here where lignite was exploited for 57 years. These large-surface exposures provide a good opportunity for detailed geological studies of strata of Late Cretaceous to Holocene age. However, the present research focuses mainly on those deposits, forms and structures that have been most thoroughly examined and are best exposed. These are Cretaceous marls and gaizes, Paleogene ‘blue clays’ and the ‘Koźmin Gravels’, Neogene sandstones, as well as the Quaternary glacial ‘Lake Koźmin’, involutions and ‘Koźmin Las’. Some of these, e.g., the ‘Koźmin Gravels’ and ‘Koźmin Las’, are not known from other Polish territories. Furthermore, results obtained by the authors over a period of nearly 30 years also include data on palaeogeographical changes across some Cenozoic intervals, especially during the early Oligocene and late Weichselian.
Bank filtration for climate resilience: potentiality of a new site along the Ismailia Canal in Egypt
Authors: Ghodeif Kamal , Wahaab Rifaat A. , Grischek Thomas , Afifi Hana , Wahsh Neveen 
Published: May 2022

Abstract
Bank filtration (BF) is a nature-based solution that can provide safe drinking water at a low cost, in being a green technology that benefits from natural ecosystem services and saves energy as well. The objective of the present paper is to evaluate the potentiality of a new site for bank filtration along a surface water source that experiences periods of both high and low flow. This site is located along the Ismailia Canal in the eastern Nile Delta fringe of Egypt. The present evaluation is based on exploratory drilling, installation of monitoring infrastructure and monitoring of both water level and water quality parameters for one year. The site has favourable hydrogeological conditions; the mean hydraulic conductivity of aquifer materials (sand and gravel) is 18.98 m/day. Moreover, there is a hydraulic connection between canal and aquifer; under steady conditions, the canal feeds the aquifer. Using different tracers, such as Cl, EC, Sr and SO4, the average bank filtration share is in excess of 95%. BF has reduced the particulates (turbidity) by 96%, total coliform by 99 % and total organic carbon (TOC) expressed as ultra-violet absorbance at 254 wavelengths (UVA254) by 44%. In addition, BF reduces concentrations of disinfection by-products due to its ability to remove organic matter. The potential degradation of TOC in the canal bed sediments may cause the release of iron (Fe) and manganese (Mn) to the bank filtrate water; this process is exaggerated during low-flow periods. Compared to conventional water treatment, BF is a cost-effective green technology, because no chemicals are used and no waste products are generated.
Textural characteristics, mode of transportation and depositional environment of the Stormberg Group in the Eastern Cape, South Africa: evidence from grain size and lithofacies analyses
Authors: Chima Priscilla , Baiyegunhi Christopher 
Published: May 2022

Abstract
The Stormberg Group comprises the Molteno, Elliot and Clarens formations and is one of four stratigraphical groups that make up the Karoo Supergroup in South Africa. The group is the highest unit in the Karoo Basin, representing the final phase of preserved sedimentation. The major problem with the Stromberg Group is that the mode of transport, hydrodynamic energy conditions and depositional environment are still poorly understood. For the present paper, grain size and lithofacies studies on selected sandstones from the Molteno, Elliot and Clarens formations were performed so as to elucidate their textural characteristics, depositional processes, sedimentation mechanisms and hydrodynamic energy conditions and to discriminate different depositional environments. The statistical parameters of grain size distribution (mean grain size, standard deviation, skewness and kurtosis) show that the sandstones are predominantly unimodal, fine grained, moderately well sorted, mesokurtic and near symmetrical. The bivariate diagrams of the aforementioned statistical parameters demonstrate that river and aeolian dune had the greatest impact on the depositional environments. Likewise, the C-M pattern (Passega diagram) shows that the sandstones were mostly deposited through tractive current process. Furthermore, the C-M diagram reveals the prevalence of rolling, suspension and graded suspension modes of sediment transportation. Seventeen sedimentary lithofacies were identified and grouped into seven lithofacies associations. These lithofacies associations indicate braided channel, overbank and swamp deposits for the Molteno Formation, alluvial fan/floodplain and playa deposits for the Elliot Formation and aeolian deposits for the Clarens Formation.
On Angular Measures in Axiomatic Euclidean Planar Geometry
Authors: Grötschel Martin , Hanche-Olsen Harald , Holden Helge , Krystek Michael P. 
Published: May 2022

Abstract
We address the issue of angular measure, which is a contested issue for the International System of Units (SI). We provide a mathematically rigorous and axiomatic presentation of angular measure that leads to the traditional way of measuring a plane angle subtended by a circular arc as the length of the arc divided by the radius of the arc, a scalar quantity. We distinguish between the angular magnitude, defined in terms of congruence classes of angles, and the (numerical) angular measure that can be assigned to each congruence class in such a way that, e.g., the right angle has the numerical value

π
2

{\pi \over 2}

. We argue that angles are intrinsically different from lengths, as there are angles of special significance (such as the right angle, or the straight angle), while there is no distinguished length in Euclidean geometry. This is further underlined by the observation that, while units such as the metre and kilogram have been refined over time due to advances in metrology, no such refinement of the radian is conceivable. It is a mathematically defined unit, set in stone for eternity. We conclude that angular measures are numbers, and the current definition in SI should remain unaltered.
Comparison of GUM and Monte Carlo Methods for Measurement Uncertainty Estimation of the Energy Performance Measurements of Gas Stoves
Authors: Utomo Bayu , Kusnandar Nanang , Firdaus Himma , Paramudita Intan , Kasiyanto Iput , Lailiyah Qudsiyyatul , Syam Wahyudin P. 
Published: May 2022

Abstract
The paper presents the comparison of uncertainty measurement estimations of the energy performances of gas stoves. The Guide to the Expression of Uncertainty in Measurement (GUM) framework and two Monte Carlo Simulation (MCM) approaches: ordinary and adaptive MCM were applied for the energy performance uncertainty: thermal energy and efficiency measurement uncertainties. The validation of the two MCMs is performed by comparing the MCM estimations to the GUM estimations for the thermal energy and efficiency measurement results. A test method designed in Indonesia National Standard SNI 7368:2011 was employed for the thermal energy and efficiency determinations. The results of the GUM and two MCM methods are in good agreement for the estimation of the thermal energy value. Significant differences of the uncertainty estimations for the thermal energy and efficiency results are observed for both GUM and MCM methods. Both the ordinary and adaptive MCM estimations give larger coverage interval compared to the GUM method. The adaptive MCM can give similar estimations with a much lower number of iterations compared to the ordinary MCM. From the estimation difference between the GUM and MCM methods, suggestions are needed for the improvement in measurement models for thermal energy and efficiency of the standard.
Estimation of Energy Meter Accuracy using Remote Non-invasive Observation
Authors: Saunoris Marius , Nakutis Žilvinas , Knyva Mindaugas 
Published: May 2022

Abstract
This paper presents an error analysis of the estimation of energy meter correction factor (CF) using a remote non-invasive technique. A method of the CF estimation based on the comparison of synchronously detected power steps in power consumption profiles of meter under test and reference meter is elaborated. The dependence of meter CF estimation uncertainty upon the magnitude of power steps, the number of power steps per observation interval, and the number of meters under test monitored by one reference meter is approximated. The synthesized consumer active power profiles are used to obtain training data points that are fit by these approximating equations.