Miracle-dz/UniFAR-FTUs huggingface dataset:
High-performance 3D Unstructured Mesh Deformation Using Rank Structured Matrix Computations

The Radial Basis Function (RBF) technique is an interpolation method that produces high-quality unstructured adaptive meshes. However, the RBF-based boundary problem necessitates solving a large dense linear system with cubic arithmetic complexity that is computationally expensive and prohibitive in terms of memory footprint. In this article, we accelerate the computations of 3D unstructured mesh deformation based on RBF interpolations by exploiting the rank structured property of the matrix operator. The main idea consists in approximating the matrix off-diagonal tiles up to an application-dependent accuracy threshold. We highlight the robustness of our multiscale solver by assessing its numerical accuracy using realistic 3D geometries. In particular, we model the 3D mesh deformation on a population of the novel coronaviruses. We report and compare performance results on various parallel systems against existing state-of-the-art matrix solvers.
RUSSIAN ACADEMY OF SCIENCES SIBERIAN BRANCH INSTITUTE OF THEORETICAL AND APPLIED MECHANICS SYMMETRIC AND ASYMMETRIC CROSSING-SHOCK- WAVES/TURBULENT BOUNDARY LAYER INTERACTIONS

Three-dimensional interaction between a turbulent boundary layer and a sequence of crossing shocks and expansion waves arising between two symmetric and asymmetric vertical fins with side inclination angles ß = 7°, 11°, and 15°, which are mounted on a plate, is experimentally studied. For Mach numbers Moo= 3 and 3.9 new data for combinations of fin angles ßixß2 equal to 7°x7°, ll°xll°, 15°xl5° 7°xll°, 7°xl5°, and ll°xl5° are obtained on the structure of the limiting streamlines, surface pressure and heat transfer coefficients distributions, which clarify considerably the topological features of these flows at various stages of their development. On the basis of obtained results and generalization of previous studies, the influence of unsteady effects on some flow properties is explained. New information also forms the basis for verification of today's numerical methods.
Are Torque-Driven Simulation Models of Human Movement Limited by an Assumption of Monoarticularity?

Subject-specific torque-driven computer simulation models employing single-joint torque generators have successfully simulated various sports movements with a key assumption that the maximal torque exerted at a joint is a function of the kinematics of that joint alone. This study investigates the effect on model accuracy of single-joint or two-joint torque generator representations within whole-body simulations of squat jumping and countermovement jumping. Two eight-segment forward dynamics subject-specific rigid body models with torque generators at five joints are constructed—the first model includes lower limb torques, calculated solely from single-joint torque generators, and the second model includes two-joint torque generators. Both models are used to produce matched simulations to a squat jump and a countermovement jump by varying activation timings to the torque generators in each model. The two-joint torque generator model of squat and countermovement jumps matched measured jump performances more closely (6% and 10% different, respectively) than the single-joint simulation model (10% and 24% different, respectively). Our results show that the two-joint model performed better for squat jumping and the upward phase of the countermovement jump by more closely matching faster joint velocities and achieving comparable amounts of lower limb joint extension. The submaximal descent phase of the countermovement jump was matched with similar accuracy by the two models (9% difference). In conclusion, a two-joint torque generator representation is likely to be more appropriate for simulating dynamic tasks requiring large joint torques and near-maximal joint velocities.
Study of combined tool tiller modes intended for graded tillage

Soil preparation with single-operation serial machine-tractor units requires multiple passes over the field, which leads to excessive soil compaction and loss of fertile layer, increased consumption of fuel and lubricants. The use of machines with dynamic tillage tools to prepare the soil for sowing allows regulation of soil pulverization intensity and performing a technological operation in one pass. The aim of the research is to study the possibilities of a combined approach to graded tillage, combining static and dynamic tillage tools. The main disadvantages of tiller are poor penetration ability, high metal and energy consumption. The authors found that the rational joint use of static and dynamic tillage tool in the cultivator for graded soil treatment may reduce the energy consumption for the top layer cultivating by 1.5 times. Such aspects, as the degree of influence of the parameters and operating modes of the tiller on the specific energy consumption of processing, soil pulverization intensity and degree of the content of erosion-hazardous particles in the upper layer are revealed, design and operating parameters of the combined cultivator and its tillage tools are substantiated.
The Aurora operating system: revisiting the single level store

Applications on modern operating systems manage their ephemeral state in memory, and persistent state on disk. Ensuring consistency between them is a source of significant developer effort, yet still a source of significant bugs in mature applications. We present the Aurora single level store (SLS), an OS that simplifies persistence by automatically persisting all traditionally ephemeral application state. With recent storage hardware like NVMe SSDs and NVDIMMs, Aurora is able to continuously checkpoint entire applications with millisecond granularity. Aurora is the first full POSIX single level store to handle complex applications ranging from databases to web browsers. Moreover, by providing new ways to interact with and manipulate application state, it enables applications to provide features that would otherwise be prohibitively difficult to implement. We argue that this provides strong evidence that manipulation and persistence of application state naturally belong in an operating system.
Damage Propagation Prediction of Adhesion Failure in Composite T-joint Structure and Improvement using PZT Patch

In this paper, a three-dimensional finite element simulation model has been developed for the prediction, propagation and improvement of adhesion failure in an adhesively bonded laminated T-joint structure using the smart piezoelectric material. Initially, the three dimensional stresses (normal and shear) and failure locations in the composite T-joint (all the layers of the web and flange) are evaluated. At the identified failure location, virtual crack closure technique (VCCT) of fracture mechanics has been employed to compute the strain energy release rate (SERR) values for different pre-embedded adhesion failure lengths. The developed coupling analysis model is used to evaluate the SERR responses for the laminated composite T-joint with single/multiple piezoelectric layers. The efficacy and improved performance (resistance to adhesion failure) of the laminated smart T-joint structure has been analysed in details by considering different influencing parameters i.e. orientation schemes, material types, piezoelectric layers, thickness, number of layers of the laminate.
Developing the Textbook of Classroom Action Research through Participatory Action Research: Quality and Challenges

Abstract: Developing the Textbook of Classroom Action Research through Participatory Action Research: Quality and Challenges. Objective: This study collaboratively developed a Classroom Action Research (CAR) textbook and formatively evaluated its quality. Method: Using Participatory Action Research (PAR), this study collaborated with 29 teachers in Aceh to design, develop, and iteratively evaluate the textbook. During the design and development process, we formatively evaluated it through self-reflection, expert appraisal, questionnaires, and interviews to produce quality textbooks in terms of validity and practicality. Findings: Results showed that although most teachers initially did not understand CAR, there was an increase in their understanding and interest in implementing CAR with the textbook guidelines. Besides, the textbook’s validity and practicality increased as expressed by the teachers. Conclusion: Using PAR in writing CAR with the teacher improves the quality of the textbook, in terms of its validity and practicality. Keywords: teachers’ involvement, participatory action research, textbook quality. Abstrak: Pengembangan Buku Teks Penelitian Tindakan Kelas melalui Penelitian Tindakan Partisipatif: Kualitas dan Tantangan. Tujuan: Penelitian ini secara kolaboratif mengembangkan buku teks Penelitian Tindakan Kelas (PTK) dan mengevaluasi kualitasnya secara formatif. Metode: Menggunakan Penelitian Tindakan Partisipatif (PAR), penelitian ini bekerja sama dengan 29 guru di Aceh untuk merancang, mengembangkan, dan mengevaluasi buku teks secara berulang. Selama proses desain dan pengembangan, kami mengevaluasi buku tersebut secara formatif melalui refleksi diri, penilaian ahli, kuesioner, dan wawancara untuk menghasilkan produk yang berkualitas dari segi validitas dan kepraktisan. Temuan: Hasil penelitian menunjukkan bahwa meskipun sebagian besar guru pada awalnya tidak memahami PTK, terjadi peningkatan pemahaman dan minat mereka dalam menerapkan PTK dengan pedoman buku teks. Selain itu, validitas dan kepraktisan buku teks meningkat sebagaimana dirasakan para guru. Kesimpulan: Menggunakan PAR dalam menulis PTK dengan guru meningkatkan kualitas buku teks, dari segi validitas dan kepraktisannya. Kata kunci: keterlibatan guru, penelitian tindakan partisipatif (PAR), kualitas buku teks. DOI: http://dx.doi. org/10.23960/jpp.v11. i1.202101
Pricing Mechanism and IPO Initial Return: Evidence from Pakistan Stock Exchange

This study adds to the extent of the literature by examining the impacts of pricing mechanism and premium offered on IPO initial return in Pakistan. Cross-sectional data were gathered using 90 listed IPOs retrieved from Pakistan stock exchange. Accordingly, ordinary least squares, quantile regression, robustness regression, and stepwise regression were employed to assess the factors that influenced initial return. This study describes the intensity of initial return in light of company specific and issue specific variables. Both closing and opening prices to offer price were incorporated to measure the initial return on the initial day of trading. The outcomes showed that after the reform of book building pricing mechanism, the initial return of IPOs increased, when compared to the fixed price offerings in Pakistan. This study concludes that information from book building pricing mechanism and premium had influenced both issuer and investor in subscribing IPO.
TOWARDS RELATIONAL AGENCY IN FINNISH EARLY YEARS PEDAGOGY AND PRACTICE

This socioculturally-framed doctoral dissertation focuses on understanding and researching agency in early years pedagogy from the perspective of both children and teachers in Finnish early childhood education (ECE), preprimary education and early primary education. In the study, agency is understood as a relational activity and underscores the interactional nature of agency that is constructed into being between people, environment and cultural resources in context. This understanding of agency has been applied in three independent studies that uncover the relational nature of agency (respectively) in children transitioning from pre-primary education to primary education (Study 1); in teachers’ work whilst creating the early years pedagogy according to the new Finnish national core curriculum recommendations on the enhancement of children’s multiliteracies (Study 2); and finally, in the interactions between children and teachers in everyday ECE practices (Study 3). This doctoral dissertation consists of three sub-studies published as articles and a summary. Study 1 is an investigation of children’s (aged 5–7 years) sense of agency across time and space through a framework of modalities of agency. The methodological approach applied in the study drew on visual ethnography that afforded the children with multimodal tools to express and make meaning of their agency in the context of their educational transition. The study makes visible the sociocultural resources that mediated the children’s sense of agency in transition from pre-primary education to primary education. Study 2 is an investigation of agency between two ECE teachers and two pre-primary teachers when they designed and conducted multiliteracy pedagogy in accordance with new curriculum requirements. The analysis of the teachers’ interviews (video and audio data) makes it evident how the open curriculum, along with the teachers’ professional skills and enthusiasm for pedagogical design, were associated with their agency. Study 3 had as its focus an investigation of children’s initiatives and ECE teachers’ responses in the everyday life of the ECE classroom as a means to understand how children’s agency is relationally facilitated or hindered. A detailed interaction analysis of the video data of children’s (n=8) and teachers’ (n=2) interaction revealed several modes through which the children communicated their initiatives and how teachers responded to these initiatives, thereby resulting in the creation of an analytical typology of agency. The results revealed adult-child relationships that give rise to a range of opportunities for children’s agency from the relational perspective. Overall, the results in this doctoral dissertation contribute to early years pedagogy in Finnish education by revealing how agency is relationally
SAFETY EVALUATION OF THYME ESSENTIAL OIL FEEDING ON LIVER AND KIDNEYS FUNCTION OF NORMAL HEALTHY RATS

The present study deals with the safety evaluation of thyme essential oil used as a spice in foods on liver and kidney functions of rats. Therefore, the activities of some enzymes of rat plasma, i.e., alanine aminotransferase (ALT), aspartate aminotransferase (AST), and alkaline phosphatase (ALP) as well as rat plasma contents, i.e., total triglycerides, total cholesterol, LDL- cholesterol, HDL- cholesterol, urea, uric acid and creatinine were determined for rats administered with thyme essential oil at two concentrations of 200 and 400 ppm. In addition, histopathological examinations were performed in order to emphasis the results of biochemical determinations of liver and kidney functions. In general, the thyme essential oil induced little changes in aminotransferases activity in rat plasma and desirable changes in total cholesterol, LDL- cholesterol and HDL- cholesterol. On the contrary, this oil did not induce any changes in urea, uric acid and creatinine contents. Histological examination showed no changes in kidneys and liver tissues, except hydropic degeneration of some hepatocytes. So, the essential oil induced limited alteration in some parameters relevant to liver and kidneys functions. The outcome from these results that the essential oil of aerial part of thyme plant had harmless effect on liver and kidneys tissues.
Pathologyofmultifocalpurplespots,anonspecific lesionmorphologyof Caribbeansea fansGorgonia spp

Disease is contributing to the decline of coral reefs globally, but the cause and pathogenesis of most coral diseases are poorly understood. Using Gorgonia ventalina and G. flabellum as a model for coral disease diagnosis, we histologically and microbiologically examined 45 biopsies of lesions resembling Gorgonia multifocal purple spots (MFPS) with the aim of forming a comprehensive case definition based on gross and microscopic morphologic descriptions and associated etiologies. Macroscopically, all lesions were small circular areas of purple pigmentation. Gross morphologies included pigmentation only (4/45, 9%), or pigmentation with branchlet ex pansion and fusion (19/45, 22%), sessile masses (17/45, 38%), or hard nodules (5/45, 9%). Histological morphologic diagnoses included amoebocyte encapsulation (9/45, 20%), coenenchymal amoebocytosis (6/45, 13%), melanin (17/45, 38%), and gorgonin deposition (13/45, 29%). Sixtyfour percent of instances of fungi and 86% of labyrinthulomycetes were localized to grossly normal portions of the biopsy, whereas barnacles were only within lesions, and 87% of instances of algae and 82% of cyanobacteria were within lesioned area of the biopsy. Penicillium (n = 12) was the predominant genus of fungi isolated from biopsies. Barnacles were identified as Conopea sp. using molecular techniques. The pathology and etiology underlying MFPS lesions are diverse, consistent with a highly nonspecific lesion pattern rather than a specific disease. This study demonstrates the importance of microscopic examination of tissues for accurate classification of coral diseases and lesion patterns.
Analysis of Song/Artist Latent Features and Its Application for Song Search

For recommending songs to a user, one effective approach is to represent artists and songs with latent vectors and predict the user's preference toward the songs. Although the latent vectors represent the characteristics of artists and songs well, they have typically been used only for computing the preference score. In this paper, we discuss how we can leverage these vectors for realizing applications that enable users to search for songs from new perspectives. To this end, by embedding song/artist vectors into the same feature space, we first propose two concepts of artist-song relationships: overall similarity and prominent affinity. Overall similarity is the degree to which the characteristics of a song are similar overall to the characteristics of the artist; while prominent affinity is the degree to which a song prominently represents the characteristics of the artist. By using Last.fm play logs for two years, we analyze the characteristics of the concepts. Moreover, based on the analysis results, we propose three applications for song search. Through case studies, we demonstrate that our proposed applications are beneficial for searching for songs according to the users' various search intents.
THE EFFECT OF CEO OVERCONFIDENCE ON FIRM’S SUSTAINABLE MANAGEMENT

This study examines whether CEO overconfidence would enhance capital expenditures, selling, general and administrative expenses, and corporate social responsibility (CSR) by preventing the CEO’s sunk-cost bias. Using data from publicly traded U.S. firms from 1992 to 2015, we find that CEO overconfidence is less influenced by the previous level of investment and leads to independent decision-making regarding expenditures and CSR. Moreover, we discovered that overconfident CEOs incur fewer expenditures by making an independent and sustainable judgment, not driven by sunk costs incurred in prior periods. We also found evidence that independent decision-making helps enable long-term sustainable management and decrease the cost burden that may arise from repeating and continuing previous CSR activities.
A study of aerodynamic noise in air duct systems with turning vanes

Noise is becoming one of the problems in many industrial applications. In this paper the aerodynamic noise in air duct system that arises from air flow passing over a surface of turning vanes is investigated. Based on Proudman's formula using Lighthill's acoustic analogy broadband acoustic noise model can be predicted. To model the turbulent flow in an air duct k - e turbulent model is used and required constants are obtained experimentally in a low speed wind tunnel followed by noise measurement in the vicinity of deflected airfoil. Several designs are investigated: Inner airfoil in the duct elbow, center positioned air foil, outer positioned and the overall combination of all previous cases. It was found that in order to satisfy all noise requirements and regulation, which are becoming more strict nowadays, the acoustic analysis and design must be performed in most industrial systems since the noise levels arising from the operating industrial equipment may represent occupational and health hazard.
Improved Efficiency of P Fertilization with Bio and Organic additives on Growth, Seed Quality and Soybean Yield

Two field experiments were conducted at Experimental Farm of Tag El-Ezz, Agricultural Research Station, Dakahlia Governorate, Egypt, during two successive summer seasons of 2019 and 2020 to study the improving efficiency of different P mineral sources with bio, and organic additives as combined treatments on growth performance, quantitative and qualitative productivity of soybean plants (Glycine max L., cv. Giza 111). A split-plot design with three replicates was used, representing three sources of P fertilizers (control, Ordinary superphosphate OSP, and Mono ammonium phosphate MAP as the main plots, six bio and organic treatments (control, arbuscular mycorrhizal fungi AM, vermicompost V, potassium humate KH, AM+V, and AM+KH as the subplots. The results were collected briefly as follows: MAP gave the highest values of vegetative growth, yield, its components, and seed quality compared to (OSP) or control. AM+KH had the best-aforementioned adjectives compared to other bio and organic additives, where the plants fertilized with AM+V came in the second-order followed by KH then V, and lately AM alone. The combination of MAP and AM+KH was the superior treatment effect on all studied traits compared to the other treatments, the highest P use efficiencies values and (benefit: cost) ratio were achieved from this reaction. The available N, P, K and pH value of soil after the harvest of soybean were improved significantly due to the integration of inorganic fertilizers with bio and organic fertilizers.
(W)Earable Microphone Array and Ultrasonic Echo Localization for Coarse Indoor Environment Mapping

We present a microphone array structure for spherical sound incidence angle tracking that can be attached to headphones or directly integrated into earphones. We show that this microphone array together with an ultrasonic sound source, e.g., a home assistant speaker in the room, allows to estimate the direction and distance of sound reflections on wall surfaces in the room. With our presented method, we achieved sound incidence angle estimation errors of around 14° in the horizontal plane and around 5° in the vertical plane, and reflection position estimation errors of around 5 cm within 2 m. Having the reflection points in 3D allows us to sparsely capture the closest room geometry at interactive rate, which is a necessary step towards indoor audio augmented reality applications.