Miracle-dz/UniFAR-FTUs huggingface dataset:
Stabilisation of quantised linear systems with packet dropout

This study is concerned with the quantised stabilisation of linear discrete systems with packet dropout. Based on the zoom strategy and Lyapunov theory, for a given packet dropout rate, a sufficient condition is given for the closed-loop system to be mean square stable. A numerical simulation is presented to show the effectiveness of the main result.
Laser crystals and ceramics: recent advances

After a brief examination of known insulating laser crystals and the stimulated emission channels of their generating activator ions, this article reviews recent advances in the development of novel lasing crystals and ceramics, as well as inorganic and organic nonlinear‐laser crystals for χ(3) and cascaded χ(3) ↔ χ(2) frequency converters. Several new modern attractive technologies in the physics and techniques of crystalline lasers are also discussed.
Crisis-induced financial anxiety, social support, socio-psychological wellbeing, and commitment to work in the tourism sector

ABSTRACT Understanding the causal influence of financial anxiety on future work commitment with social support and socio-psychological wellbeing as mediators amongst crisis-induced redundant tourism employees remains limited. Using data collected from 547 COVID-19-induced redundant tourism employees, this paper examines the influence of financial anxiety on future work commitment with social support and socio-psychological wellbeing as mediators. The findings reveal that financial anxiety has a negative influence on social support and social and psychological wellbeing. Social support has a negative influence on social wellbeing, while social support has a positive influence on future work commitment. Both social and psychological wellbeing has a negative influence on future work commitment. Meanwhile, the influence of financial anxiety on future work is fully mediated by social support and socio-psychological wellbeing. Insurance uptake and establishment of welfare funds amongst tourism employees can be used to buffer the effects of financial anxiety on future work commitment.
Reynolds transport theorem for a two-phase flow

Transport equations for one-dimensional (1d), steady, two-phase flow have been proposed based on the fact that if the phases have different velocities, they cannot cover the same distance (the control volume length) in the same time. Thus, working in the same control volume for the two phases, the time scales of the phases have to be different. From this approach, transport balances for 1D, steady, two-phase flow have been already derived, supplying acceptable correlations for two-phase flow. Here, based on the strict application of the Reynolds transport theorem, general transport balances for two-phase flow are suggested.
Viscoelastic properties of a cross-linked polysiloxane near the sol–gel transition

Experimental results are presented concerning the zero frequency and dynamic properties of a cross-linked polysiloxane near gelation threshold. It is prepared by hydrosilation of a difunctional vinyl-terminated polydimethylsiloxane prepolymer and a seven-functional poly(dimethyl- siloxane-co-methylhydrogenosiloxane) prepolymer. The zero frequency and dynamic properties during cross linking have been studied by rheological experiments in the framework of the linear viscoelasticity. The material at the gelation threshold follows a power law viscoelastic behavior, G*∝ωu with u=0.77. The zero frequency exponents s and t (η∝es; G∝et) were determined from the rheological data (s=0.76 and t=2.54). This study shows that the zero frequency and dynamic exponents obey to the scaling relation u=t/(s+t) and are not universal. Above the gelation threshold, a rheological master curve could be built showing that the viscoelastic properties of the gel are governed by the molecular structure of the prepolymers and the self-similarity of the mass distribution of clusters. In this way, this system follows the percolation theory. Assuming that the nonreacted prepolymers swell the network, the molecular weight between crosslinks was estimated.Experimental results are presented concerning the zero frequency and dynamic properties of a cross-linked polysiloxane near gelation threshold. It is prepared by hydrosilation of a difunctional vinyl-terminated polydimethylsiloxane prepolymer and a seven-functional poly(dimethyl- siloxane-co-methylhydrogenosiloxane) prepolymer. The zero frequency and dynamic properties during cross linking have been studied by rheological experiments in the framework of the linear viscoelasticity. The material at the gelation threshold follows a power law viscoelastic behavior, G*∝ωu with u=0.77. The zero frequency exponents s and t (η∝es; G∝et) were determined from the rheological data (s=0.76 and t=2.54). This study shows that the zero frequency and dynamic exponents obey to the scaling relation u=t/(s+t) and are not universal. Above the gelation threshold, a rheological master curve could be built showing that the viscoelastic properties of the gel are governed by the molecular structure of the prepolymers and the self.
Effect of spin precession on bounding the mass of the graviton using gravitational waves from massive black hole binaries

Observations of gravitational waves from massive binary black hole systems at cosmological distances can be used to search for a dependence of the speed of propagation of the waves on wavelength, and thereby to bound the mass of a hypothetical graviton. We study the effects of precession of the spins of the black holes and of the orbital angular momentum on the process of parameter estimation based on the method of matched filtering of gravitational-wave signals vs. theoretical template waveforms. For the proposed space interferometer LISA, we show that precession, and the accompanying modulations of the gravitational waveforms, are effective in breaking degeneracies among the parameters being estimated, and effectively restore the achievable graviton-mass bounds to levels obtainable from binary inspirals without spin. For spinning, precessing binary black hole systems of equal masses 106 M⊙ at 3 Gpc, the lower bounds on the graviton Compton wavelength achievable are of the order of 5 × 1016 km.
Proposed Marketing Strategy for Schouten.id to Increase Brand Awareness and Purchase Intention

Schouten.id is a local men’s fashion brand that sells basic wear products and was founded in 2017. Schouten currently has five product categories: outerwear, shirts, pants, and hats. Every year, the number of MSMEs in the fashion sector grows, resulting in the emergence of many new competitors; however, some old competitors have also become obstacles. According to Schouten’s sales data from 2020 to 2022, sales have fluctuated. The author conducted preliminary interviews with fifteen random people, only two of whom were familiar with the Schouten brand. With these findings, it is possible to conclude that Schouten’s use of social media and promotional methods is still not optimal, resulting in a lack of brand awareness. According to the fishbone diagram’s description of the problem, the fluctuations that occur in Schouten are also influenced by product and place factors. The purpose of this research is to determine what factors cause sales fluctuations at Schouten, what factors influence purchase intention, and what marketing strategy suggestions are appropriate to increase brand awareness at Schouten. To achieve the research objectives, the authors will conduct external and internal analysis, resulting in TOWS as a solution. PEST analysis, Porter’s Five Forces Analysis, competitor analysis, and customer analysis were used for external analysis. Customer analysis was conducted by distributing questionnaires at random to 200 respondents, including potential customers. SmartPLS 4 is then used to process the data using the PLS-SEM approach. Then, for internal analysis, VRIO analysis, marketing mix, and STP are used. The TOWS matrix produced 11 strategies, and as many as six of them were chosen to formulate new marketing strategy proposals, which Schouten could then implement based on the implementation plans that had been created.
Network Regulation of microRNA Biogenesis and Target Interaction

MicroRNAs (miRNAs) are versatile, post-transcriptional regulators of gene expression. Canonical miRNAs are generated through the two-step DROSHA- and DICER-mediated processing of primary miRNA (pri-miRNA) transcripts with optimal or suboptimal features for DROSHA and DICER cleavage and loading into Argonaute (AGO) proteins, whereas multiple hairpin-structured RNAs are encoded in the genome and could be a source of non-canonical miRNAs. Recent advances in miRNA biogenesis research have revealed details of the structural basis of miRNA processing and cluster assistance mechanisms that facilitate the processing of suboptimal hairpins encoded together with optimal hairpins in polycistronic pri-miRNAs. In addition, a deeper investigation of miRNA–target interaction has provided insights into the complexity of target recognition with distinct outcomes, including target-mediated miRNA degradation (TDMD) and cooperation in target regulation by multiple miRNAs. Therefore, the coordinated or network regulation of both miRNA biogenesis and miRNA–target interaction is prevalent in miRNA biology. Alongside recent advances in the mechanistic investigation of miRNA functions, this review summarizes recent findings regarding the ordered regulation of miRNA biogenesis and miRNA–target interaction.
Cassava pulp added to fermented total mixed rations increased tropical sheep’s nutrient utilization, rumen ecology, and microbial protein synthesis

Objective: The price of animal production will be affected by the significant increase in feed costs. The objective of this research was to investigate the impact of adding waste cassava pulp to fermented total mixed ration (FTMR) on nutrient utilization, rumen ecology, and microbial protein synthesis in tropical sheep. Materials and Methods: A 3 × 3 replicated Latin square design was used to randomly arrange nine crossbreed lambs (Santa Inês × Dorper) with an initial body weight (BW) of 18.7 ± 1.6 kg (mean ± SD). During a 21-day trial, the animal was offered a random selection of concentrate diets and rice straw (control), total mixed ration (TMR), or FTMR. During the investigation, data on nutrition utilization, rumen ecology, and microbial protein synthesis were analyzed using analysis of variance. Results: The finding shows that FTMR had significantly higher dry matter (DM) intake and DM intake per BW than either TMR or control (p < 0.05). Lamb fed on FTMR had significantly higher DM, organic matter protein, crude protein, and neutral detergent fiber digestion than those on control or TMR (p < 0.05). Rumen pH values for all treatments ranged from 6.68 to 6.73, with no significant differences. Growing lambs fed FTMR had greater rumen total volatile fatty acid and propionic acid concentrations than those given TMR and the control (p < 0.05). Protozoa were not different across the FTMR groups, although total bacterial and fungal zoospores were increased. In addition, when lambs were fed FTMR containing cassava pulp, ruminal microbial protein synthesis was significantly increased. Conclusion: It could indicate that feeding growing lambs with FTMR could improve nutrient utilization, ruminal fermentation, and microbial protein synthesis. However, studies on the effects of FTMR on sheep performance, meat quality, and milk quality are necessary.
Electrodynamic transition in solid armature railguns

An important research problem for solid armature railguns is understanding the sudden transition from low-voltage sliding electrical contact between the rails and armature to high-voltage contact involving a plasma arc. Although an armature can fail in many ways and thereby "transition," two distinct transition mechanisms currently limit the performance of solid armature electromagnetic (EM) launchers. One mechanism, broadly termed "wear-induced transition," results from uneven or excessive loss of material from the contact interface. The other mechanism is associated with a rapid reduction in driving current (negative dI/dt). A series of experiments have shown the waveform-induced transition mechanism is independent of the state of wear of an armature. This paper explores this mechanism, which we call "electrodynamic transition," and seek to explain the cause of transition as an electromechanical instability that disrupts the liquid film interface between armature and rail. Using 3-D finite element analyses (FEA), we observed the development of localized forces at the edges of the armature as the driving current drops rapidly. This behavior, we believe, may cause molten material to be ejected from the armature-rail contact region.
A method of integration for wave equation and some applications to wave physics

Abstract We present a Hilbert space analytical rigorous method to solve globally a class of important abstract wave equations in mathematical physics of continuum mechanics. We show its usefulness by proposing some sort of Trotter–Kato–Feynman method to analyze the usual wave motion in . We besides produce a proof for the exponential decay of the total energy associated to a planar magnetoelastic wave motion in an electric dispersive medium. As a last result of our work, we present the existence and uniqueness of an abstract Klein–Gordon functional wave equation by means of Hilbert space techniques.
Vortex Excited Oscillations of Yawed Circular Cylinders

Yawed cylinders are cylinders inclined forward or backwards in the plane of the flowing fluid. They are used in many practical situations such as braced frame members and raked marine piles. This paper describes an examination of three aspects of the yawed cylinder-fluid interactions over a range of yaw angles ±45° from the vertical for the Reynolds number range 2,000 < Re < 20,000. viz. 1. Establishment of the stability criteria of vortex-excited oscillations. 2. Measurement of ‘steady’ drag forces and equivalent drag coefficients. 3. Visualization of the local flow over stationary and oscillating cylinder. After a brief review of previous experimental and theoretical work, the results of the three items listed above are presented and discussed. Vortex-excited oscillations were recorded in the in-line and crossflow directions throughout the range of yaw angles and the results of items 2, 3 were used to justify the forms of the stability criteria proposed for these oscillations.
The State of Trajectory Visualization in Notebook Environments

Gaining insights from trajectory datasets is a challenging task that requires suitable visual data representations. There is a considerable gap between the state-of-the-art cartographic techniques presented in the literature and currently available spatial data science toolboxes. This review paper presents the current state of geospatial visualization tools for trajectory data, focusing on the Python and Jupyter notebooks ecosystem. The shortcomings identified provide pointers for further scientific software development, as well as a reference for data scientists in choosing the best-fitting tool for a specific job.
Recent progress of tungsten R&D for fusion application in Japan

The status of ongoing research projects of tungsten R&D in Japan is summarized in this paper. For tungsten material development, a new improved fabrication technique, the so-called superplasticity-based microstructural modification, is described. This technique successfully improved fracture strength and ductility at room temperature. Recent results on vacuum plasma spray W coating and W brazing on ferritic steels and vanadium alloys are explained. Feasibility of these techniques for the manufacture of the blanket is successfully demonstrated. The latest findings on the effect of neutron damage in tungsten on T retention and on the change in mechanical and electrical properties are described. Retention characteristics for neutron-damaged W were different compared to those for ion-damaged W. Upon neutron irradiation, tungsten alloys containing transmutation elements of W (Re and Os) show changes in properties that are different compared with those shown by pure W. The effects of mixed plasma exposure (D/He/C) are described. Both D/He and D/C mixed ion irradiations significantly affect ion-driven permeation in W. He bubble dynamics play a key role in nano-structure formation on the W surface.
LOW-FREQUENCY NEGATIVE RESISTANCE IN THIN ANODIC OXIDE FILMS

Negative resistance and large current densities have been observed in the direct‐current—voltage characteristics of five metal‐oxide‐metal sandwiches prepared from evaporated metal films. The systems studied and their voltages for maximum current are: Al‐SiO‐Au, 3.1 V; Al‐Al2O3‐Au, 2.9 V; Ta‐Ta2O5‐Au, 2.2 V; Zr‐ZrO2‐Au, 2.1 V; and Ti‐TiO2‐Au, 1.7 V. For aluminum oxide, which has been most extensively studied, the voltage for maximum current is independent of film thickness for films between 150 and 1000 A thick; the phenomenon is not field dependent. Peak‐to‐valley ratios of 30:1 and current densities of 10 A/cm2 are typical. Maximum current densities at peak voltage are 25 A/cm2; minimum current densities are 0.01 A/cm2. Switching time from peak current to valley current is <0.5 μsec but negative resistance is not found for 60‐cycle voltages. Establishment of the dc characteristics and dependence on temperature and atmosphere are described. Electron emission from aluminum oxide sandwiches can occur at 2.5 V. Space‐charge‐limited currents in the insulator provide a possible mechanism for the current‐voltage curves and large currents below the voltage for maximum current through the oxide films. The mechanism responsible for negative resistance is uncertain.
Peculiar feature of KCl + SbCl3 phosphors: PL and XRD studies

Photoluminescence of antimony-activated potassium chloride prepared by a mechanical grinding method has been reported. The non-coincidence of the excitation and diffuse absorption band has been found as a result of the peculiar nature of the mixed phosphor, which suggests the different nature of the luminescent centers present in the phosphor. This difference in the nature of the diffuse absorption spectra and excitation spectra has been attributed to the Sb3+ and Sb5+ ions in the KCl+SbCl3 host lattice. Photoluminescence intensity has been strongly enhanced by reducing the temperature to the liquid nitrogen temperature. The powder diffraction pattern obtained from the XRD analysis shows the presence of complexes over the surface.
Asymmetrical current distribution in metallized film capacitors

The presence of high frequency currents in the vicinity of metallized capacitors can generate eddy currents in the metallizations, with a possible negative impact on the reliability and lifetime of these components. These phenomena are due to the asymmetrical distribution of the field lines. We present a model derived from the physical relations between the current density, the strength of the magnetic field, the electromotive force in a capacitor winding and its plates, and the conductivity of the different materials. This model also takes into account anisotropy due to the structure of the winding. The results obtained from this model can be compared to the measurements of the electromotive force detected by a loop in the vicinity of a capacitor under operation. Finally, the consequences of nonsymmetrical magnetic field distribution are discussed in the light of the results obtained from the model.
The r-, p-, and νp-Process

The processes discussed in this review are three of the four nucleosynthesis processes involved in producing heavy nuclei beyond Fe (not counting the rp-process in X-ray bursts). Opposite to the fourth process (the s-process), which operates in stellar evolution during He- and C-burning, they are all related to explosive burning phases, (presumably) linked to core collapse supernova events of massive stars. The (classical) p-process is identified with explosive Ne/O-burning in outer zones of the progenitor star. It is intitiated by the passage of the supernova shock wave and acts via photodisintegration reactions like a spallation process which produces neighboring (proton-rich) isotopes from pre-existing heavy nuclei. The reproduction of some of the so-called lighter p-isotopes with A < 100 faces problems in this environment. The only recently discovered ? p-process is related to the innermost ejecta, the neutrino wind expelled from the hot proto-neutron star after core collapse in the supernova explosion. This neutrino wind is proton-rich in its early phase and reactions with neutrinos permit to overcome decay/reaction bottlenecks for the flow beyond the Fe-group, thus permitting the production of those p-isotopes, which face problems in the classical p-process scenario. The understanding of the r-process, being identified for a long time with rapid neutron captures ? and passing through nuclei far from stability ? is still experiencing major problems. These are on the one hand related to nuclear uncertainties far from stability (masses and half-lives), affecting the process speed and abundance peaks, on the other hand the site is still not definitely located, yet. Later neutron-rich, high entropy phases of the neutrino wind could permit its operation, other options include the ejection of very neutron-rich neutron star matter. Two different environments are required for a weak and a main/strong r-process, witnessed by observations of low metallicity stars.
Dynamic Simulation of Polarization Reversal Processes in Ferroelectric Crystals under Electron Beam Irradiation

The paper describes the results of dynamic simulation of electron beam-induced polarization reversal process in ferroelectrics with a focus on a fractal approach. The methods of fractal analysis were used to estimate the scaling characteristics of TGS-domain structure images and polarization switching current obtained with the SEM. The computer simulation results of domain configuration geometry and corresponding form of switching current are presented. Using modified Kolmogorov-Avrami model, the polarization current was determined taking into account differential equation with fractional derivative. The main features of simulation curve of polarization switching current correspond to experimental data observed.
Organisational Studies and Innovation

: In the digital age of today, a large number of higher education institutions have adopted Human Resource Information Systems (HRIS) to improve the overall efficiency of operations. With the exponential growth in education sector of Pakistan and the onset of the COVID-19 pandemic, the role of HRIS has considerably expanded for all stakeholders, particularly faculty members of universities. This study aims to explore the factors that motivate universities to implement HRIS, the role of HRIS in enhancing the productivity of faculty members, and the constraints associated with the use of HRIS. This qualitative study follows the descriptive phenomenology approach to explore the significance of HRIS for faculty members. Non-probability purposeful sampling was used to select 14 faculty members who were interviewed at seven Pakistani universities. The study establishes that HRIS is considered a valuable technology for streamlining HR functions of universities in general and faculty members in particular.