Miracle-dz/UniFAR-FTUs huggingface dataset:
Comparisons of General Linear Groups and their Metaplectic Coverings I

Abstract We prepare for a comparison of global trace formulas of general linear groups and their metaplectic coverings. In particular, we generalize the local metaplectic correspondence of Flicker and Kazhdan and describe the terms expected to appear in the invariant trace formulas of the above covering groups. The conjectural trace formulas are then placed into a form suitable for comparison.
A Microstrip Line-Based Parasitic Elements Decoupling Method

In this paper, a microstrip-based parasitic element decoupling structure is used to design a high-isolation patch antenna array consisting of a C-shaped microstrip line and two short pins. The structure is symmetrical at the center, and a bunch of identical microstrip line structures are placed symmetrically on both sides of the patches. The frequency is within the bandwidth of 3.27 to 3.37 GHz, and the return loss of the antenna is less than -10 dB. After adding a microstrip line decoupling structure between the two patch antennas, the isolation between the antennas is increased from the original 22 dB to more than 33 dB. Moreover, the added decoupling structure can effectively improve the antenna's radiation pattern.
Effect of the gate metal work function on water-gated ZnO thin-film transistor performance

ZnO thin films, prepared using a printing-compatible sol–gel method involving a thermal treatment below 400 °C, are proposed as active layers in water-gated thin-film transistors (WG-TFTs). The thin-film structure and surface morphology reveal the presence of contiguous ZnO crystalline (hexagonal wurtzite) with isotropic nano-grains as large as 10 nm characterized by a preferential orientation along the a-axis. The TFT devices are gated through a droplet of deionized water by means of electrodes characterized by different work functions. The high capacitance of the electrolyte allowed operation below 0.5 V. While the Ni, Pd, Au and Pt gate electrodes are electrochemically stable in the inspected potential range, electrochemical activity is revealed for the W one. Such an occurrence leads to an increase of capacitance (and current), which is ascribed to a high output current from the dissolution of a lower capacitance W-oxide layer. The environmental stability of the ZnO WG-TFTs is quite good over a period of five months.
Fluorescent Dye-Doped Brightening Polymer-Stabilized Bistable Cholesteric Liquid Crystal Films

Brightening polymer-stabilized bistable cholesteric liquid crystal (PSBCLC) films with doped fluorescent dyes were prepared using the polymerization-induced phase separation (PIPS) method. The transmittance performance behavior of these films in both states (focal conic and planar) and absorbance change in multiple dye concentrations were studied using a UV/VIS/NIR spectrophotometer. The change occurring in dye dispersion morphology with different concentrations was obtained by means of the polarizing optical microscope. The maximum fluorescence intensity of different dye-doped PSBCLC films was measured using a fluorescence spectrophotometer. Moreover, the contrast ratios and driving voltages of these films were calculated and recorded to demonstrate film performance. Finally, the optimal concentration of dye-doped PSBCLC films with a high contrast ratio and a relatively low drive voltage was found. This is expected to have great potential applications in cholesteric liquid crystal reflective displays.
Recent progress in 4D printed energy-absorbing metamaterials and structures

ABSTRACT The emergence of 4D printing from additive manufacturing has opened new frontiers in crashworthiness application. Energy-absorbing structures with fixed geometrical shapes and irreversible deformation stages can be programmed such that after mild or extreme deformation, their initial shapes, properties and functionalities can be recovered with time when actuated by external stimuli. This survey delves into the recently-accelerated progress of shape memory/recovery energy-absorbing metamaterials (EAMM) and energy-absorbing smart/intelligent structures (EASS). First, the introduction gives some fundamental concepts of metamaterials and their application to energy-absorbing structures. Next, some common 3D printing technologies that have led to 4D printed EAMM and EASS are succinctly described. Shape memory materials, their functional properties and recovery process, are then discussed. Finally, various recoverable/reversible energy absorbers with their future challenges and perspectives, are presented. With well-tailored 4D printed EAMM and EASS, reusability with minimal maintenance and higher energy absorption capacity can be retained.
DIdM-EIoTD: Distributed Identity Management for Edge Internet of Things (IoT) Devices

The Internet of Things (IoT) paradigm aims to enhance human society and living standards with the vast deployment of smart and autonomous devices, which requires seamless collaboration. The number of connected devices increases daily, introducing identity management requirements for edge IoT devices. Due to IoT devices’ heterogeneity and resource-constrained configuration, traditional identity management systems are not feasible. As a result, identity management for IoT devices is still an open issue. Distributed Ledger Technology (DLT) and blockchain-based security solutions are becoming popular in different application domains. This paper presents a novel DLT-based distributed identity management architecture for edge IoT devices. The model can be adapted with any IoT solution for secure and trustworthy communication between devices. We have comprehensively reviewed popular consensus mechanisms used in DLT implementations and their connection to IoT research, specifically identity management for Edge IoT devices. Our proposed location-based identity management model is generic, distributed, and decentralized. The proposed model is verified using the Scyther formal verification tool for security performance measurement. SPIN model checker is employed for different state verification of our proposed model. The open-source simulation tool FobSim is used for fog and edge/user layer DTL deployment performance analysis. The results and discussion section represents how our proposed decentralized identity management solution should enhance user data privacy and secure and trustworthy communication in IoT.
Exploring the tuberculosis medication program in Indonesia as perceived by patients and their families: A qualitative study

Background Tuberculosis (TB) remains a significant public health challenge in Indonesia, with the country experiencing one of the highest numbers of lost cases in TB management. Therefore, there is a need to identify the underlying reasons for this problem. Objective This study aimed to explore the experiences of TB-diagnosed patients and their families during the time of diagnosis and while undergoing the TB medication program. Methods This study employed a qualitative descriptive-interpretive approach. The study was conducted in government community health centers (CHC) from May 2022 to July 2022. A total of 22 participants, consisting of 12 TB-diagnosed patients and ten family members, were included in the study. Data were collected through focus group discussions and analyzed thematically. Results Five themes were developed: (1) Delay in tuberculosis diagnosis, (2) Delay in starting TB treatment, (3) High willingness of patients and their families to recover, (4) Understanding that TB is an infectious disease, and (5) Factors affecting patient recovery. Conclusion The study findings might contribute to the National TB elimination program. It is recommended that all health workers practicing in the community should be involved in the TB program to improve its management. Collaboration between multiple sectors in the community can also provide an advantage in solving TB problems by increasing new case detection. Additionally, it is suggested that all nurses working with TB patients establish rapport with health cadres and patients’ families to enhance medication adherence in patients.
Finite-Dimensional Compensators for the $H^\infty$-Optimal Control of Infinite-Dimensional Systems via a Galerkin-type Approximation

We study the existence of general finite-dimensional compensators in connection with the $H^{\infty}$-optimal control of linear time-invariant systems on a Hilbert space with noisy output feedback. The approach adopted uses a Galerkin-type approximation, where there is no requirement for the system operator to have a complete set of eigenvectors. We show that if there exists an infinite-dimensional compensator delivering a specific level of attenuation, then a finite-dimensional compensator exists and achieves the same level of disturbance attenuation. In this connection, we provide a complete analysis of the approximation of infinite-dimensional generalized Riccati equations by a sequence of finite-dimensional Riccati equations. As an illustration of the theory developed here, we provide a general procedure for constructing finite-dimensional compensators for robust control of flexible structures.
Face Recognition Method Using Improved Discriminant Sparse Preserving Projection

According to the question that sparse preserving projection can't make full use of local structure information of the similar and heterogeneous samples, proposed a face recognition method using improved discriminant sparse preserving projection. It used kernel methods to increase discriminant information sparse preserving coefficient and local structure information between the samples, updating weight of sparse representation coefficient with information, and optimizing the method as a whole. Results show that the method has good resolution, and it has higher recognition rate and robustness.
Space Vector Control Technique for grid-tied three-level NPC inverter fed by Photovoltaic System

In photovoltaic (PV) applications, multilevel inverters are becoming increasingly attractive for researchers and industry in grid-connected installations due to their outstanding advantages compared to conventional inverters. In this paper, a three-phase grid-connected photovoltaic power generation system is presented that implements a neutral-point (NPC) inverter. The first part describes the design and modeling of the incremental conductance tracker to track the PV system's maximal power and maintain the output DC voltage within the desired limits. The second part focuses on the space vector modulation (SVM) used to control the three-level neutral point inverter. The NPC three-level inverter is connected to the grid by the means of an LCL filter using the DQ control method. This study aims to assess the performance injected into the grid and verify the performance of the adopted this using MATLAB Simulink environment.
An Approach to Attribute Reduction Based on Attribute Similarity

There are many problems in the attribute reduction algorithm of rough set, in order to solve these problems, the consistency between attribute similarity and granularity similarity is deduced, moreover, an algorithm of attribute re- duction is presented base on attribute similarity, the main steps include acquiring the condition attribute reduction by the indiscernible matrix method, determining the core, calculating the similarity of dispensable attribute and searching for the mostsimple reduced attribution. The simulation and comparative analysis show the calculation is simple andthe effect is notable.
Asymptotic Behaviour of Dirichlet Problems in Perforated Domains

Let A be a linear elliptic operator of the second order with bounded measurable coefficients on a bounded open set Ω of Rn , and let (Ωh) be an arbitrary sequence of open subsets of Ω. We prove the following compactness result: there exist a subsequence, still denoted by (Ωh) , and a positive Borel measure μ on Ω, not charging polar sets, such that, for every f ∈ H−1(Ω) , the solutions uh ∈ H1 0 (Ωh) of the equations Auh = f in Ωh , extended to 0 on Ω\Ωh , converge weakly in H1 0 (Ω) to the unique solution u ∈ H1 0 (Ω) ∩ L 2 μ(Ω) of the problem
New algorithm for DOA estimation and its root version

Due to the limitation of the aperture of the array in practice,the number of the signals the existing algorithms could handle is not big,so is the spectral resolution.It is proved that the aperture of the array could be expanded under the assumption that the signals are noncircularly symmetric.On this basis a new algorithm for DOA estimation and its root version are proposed.The viewpoint is put forward that the new algorithm and its root version would perform better in estimating DOA than the classical MUSIC under the same conditions and could even handle more signals than the classical one.Computer simulations verify this conclusion in the end.
Zebrafish as a Model to Study Retinoic Acid Signaling in Development and Disease

Retinoic acid (RA) is a metabolite of vitamin A (retinol) that plays various roles in development to influence differentiation, patterning, and organogenesis. RA also serves as a crucial homeostatic regulator in adult tissues. The role of RA and its associated pathways are well conserved from zebrafish to humans in both development and disease. This makes the zebrafish a natural model for further interrogation into the functions of RA and RA-associated maladies for the sake of basic research, as well as human health. In this review, we explore both foundational and recent studies using zebrafish as a translational model for investigating RA from the molecular to the organismal scale.
Xylanase enhanced second-generation bioethanol production through simultaneous saccharification and fermentation

Abstract This study aimed to correlate hydrolytic enzymes with enhanced bioethanol production during the simultaneous process of saccharification and fermentation for different agricultural wastes. This study screened the activities of hydrolytic enzymes to evaluate the simultaneous process and correlated them with bioethanol production. The results of the simultaneous process showed that cantaloupe peels produced the highest amount of reducing sugars and bioethanol. Cellulase showed maximum activity in the first 24 h, indicating that yeast cells favoured glucose over xylose. The results of the simultaneous saccharification and fermentation experiments revealed a 5-fold decrease in cellulase activity after 72 h. Xylanase activity improved from 79.38 to 95.18 U g−1, and bioethanol production was enhanced from 21.42 to 75.66 g L−1, confirming the capability of the simultaneous process to enhance bioethanol production. Although ethanol production was lower than that obtained with xylose cultivation alone, it was higher than that observed with glucose.
Spatial distribution and evaluation of risk factors for bovine neosporosis in Rondônia, Brazil

ABSTRACT Neospora caninum is an important worldwide parasite responsible for causing abortion in animals. Due to limited information on the occurrence of infection by this parasite in the state of Rondônia, Brazil, this study aimed to determine the seroprevalence and identify the risk factors associated with the infection in slaughtered cattle, from 19 municipalities distributed in seven microregions of the state. A total of 494 samples were obtained and subjected to anti-N. caninum antibodies, using the Indirect Immunofluorescence Reaction technique. Antibodies were detected in 5.06% (25/494) of the samples, in 30.30% (10/33) of farms, in nine municipalities located in four microregions of Rondônia. Of all the animals analyzed, 4.81% of the females (20/416) and 6.41% of the males (05/78) were seropositive for the parasite, with “abortion in the last 12 months” being considered an important risk factor for the occurrence of infection (OR = 9.54; p = 0.01). The present study points out the prevalence of anti-N. caninum antibodies in 5.06% of slaughtered animals and abortion as the main risk factor associated with infection by N. caninum, thus contributing to the elucidation of the epidemiology of this protozoan in Rondônia, Brazil.
TWO-STAGE PROCEDURES FOR COMPARING SEVERAL EXPONENTIAL POPULATIONS WITH A CONTROL WHEN THE SCALE PARAMETERS ARE UNKNOWN AND UNEQUAL

In this paper, two-stage procedures for comparing several exponential p opulations w ith a control are developed under the I assunrption of unknown and unequal variances. Conventional I techniques using Bonferroni's inequality as given in Mukhopadyay and Hamdy (1984) are used to derive multiple comparison results. By exploiting recent techniques given in Lam (1987, 1988), improvements on multiple comparison results are obtained. The results can be applied to selecting the exponential p opulation with the largest (or with the smallest) location parameter using the indifference zone approach in Bechhofer (1954) or t he subset selection approach in Gupta (1956).
Self-Aligned Organic Field-Effect Transistors on Plastic with Picofarad Overlap Capacitances and Megahertz Operating Frequencies

Using a combination of nanoimprint lithography, gate-source/drain self-alignment, and gravure and inkjet printing, we fabricate organic field-effect transistors on flexible plastic substrates with gate-source and gate-drain electrode overlap capacitances of COL < 1 pF, equivalent to channel-width normalised capacitances of C*OL = 0.15–0.23 pF mm−1. We compare photopatterned and nanoimprint lithography patterned channels of L ≈ 3.8 μm and L ≈ 800 nm, respectively. The reduction in L was found on average to result in order of magnitude greater switching frequencies. Gravure printing the dielectric (versus photo-patterning) was found to yield an order of magnitude lower overlap capacitance C*OL = 0.03 pF mm−1, at the expense of greater processing variation. Inkjet printed p- and n-type polymeric organic semiconductors were used to fabricate organic-field effect transistors with a peak cutoff frequencies of fS = 9.0 ± 0.3 MHz at VGS = 30 V, and transition frequencies of fT = 3.3 ± 0.2 MHz at VGS = 30 V.
Toughness and binding number bounds of star-like and path factor

Let $\mathcal{L}$ be a set which consists of some connected graphs. Let $E$ be a spanning subgraph of graph $G$. It is called a $\mathcal{L}$-factor if every component of it is isomorphic to the element in $\mathcal{L}$. In this contribution, we give the lower bounds of four parameters ($t(G),$ $I(G), $ $I'(G),$ $\operatorname{bind}(G)$) of $G$, which force the graph $G$ admits a $(\{K_{1,i}:q\leq i\leq 2q-1\}\cup \{K_{2q+1}\})$-factor for $q\geq 2$ and a $\{P_2, P_{2q+1}\}$-factor for $q\geq 3$ respectively. The tightness of the bounds are given.
Fault Tolerant Control of PMSM based on Improved Exponential ESO

In this work, a Fault-Tolerant Control (FTC) design is based on a novel reaching law sliding mode control (SMC) with an improved exponential extended state observer (ESO) for a 3-phase Permanent Magnet Synchronous Motor (PMSM) is proposed. Moreover, a direct field-oriented control based on ESO with a novel reaching law SMC is designed to achieve robust performance against parameter variations and external disturbances. The main goal of using an improved exponential ESO is to detect and reconstruct disturbances and faults. Furthermore, the stability of these observers and controllers is proved by using the Lyapunov stability theory.
Hybrid problem-based learning in Technology teacher preparation: Giving students a voice in their learning process

Technology education instils technological literacy in South African learners, preparing them for life and employment. Yet, few high school-level Technology1 teachers are being trained and ensuring that Technology student teachers are optimally prepared, is vital. Learning strategies such as problem-based learning need to be implemented to provide students with opportunities to have their voices heard as well as being actively involved in their education. Hybrid problem-based learning has been successfully implemented in geography and life sciences teacher education, but its use in Technology teacher preparation has not been reported. Therefore, we conducted a concurrent triangulation research study at a South African university offering Technology teacher preparation. In the study, we explored how teacher students experienced and perceived hPBL as a teaching-learning strategy and how this gave them a voice in their teacher training. The study, therefore, substantiated hPBL as a beneficial teaching-learning strategy that can give Technology student teachers a voice and actively involve them in their construction of learning.
A Robust Security Scheme Based on Enhanced Symmetric Algorithm for MQTT in the Internet of Things

Message Queuing Telemetry Transport (MQTT) is expected to be the de facto messaging IoT standard. Therefore, MQTT must achieve efficient security. Nevertheless, the most significant drawback of the MQTT is its lack of protection mechanisms. Meanwhile, the existing approaches have added processing overhead to the devices and are still vulnerable to various attacks. Therefore, this research work presented an integrated scheme known as the Robust Security Scheme (RSS) to protect the MQTT against any exploitations that might result in sophisticated cyberattacks. The proposed RSS employs two cryptosystems: 1) a dynamic variant of the Advanced Encryption Standard (D-AES); and 2) Key-Policy Attribute-Based Encryption (KP-ABE). RSS introduces a new design architecture of the symmetric AES algorithm to encrypt the MQTT payload called D-AES. Additionally, the second part of the proposed hybrid cryptosystem is KP-ABE, which is utilized to cipher the private key of the proposed D-AES to avoid the computation overhead of bilinear maps. The performance of the proposed RSS is measured in terms of processing time and traffic overhead. Additionally, the security aspects are evaluated in terms of balance, avalanche effect, and hamming distance and compared to the existing works in a testbed environment. Results revealed that the proposed D-AES is more promising with improvements than the standard AES algorithm. The proposed scheme achieves polymorphism while maintaining interoperability. RSS exhibited improvements over the standard AES algorithm by 8.75%, 10.45%, and 6.81% in terms of balance, avalanche effect, and hamming distance, respectively.
An UWB Bandpass Filter with Large Upper Stop Band Suppression

An new bandpass filter (BPF) with wide stopband performance for ultra-wideband (UWB) applications is presented in this paper. An equivalent RLC circuit model is also shown, and its relevant parameters are derived using parametric relationships. The proposed filter operates from 2.4 GHz to 10.4 GHz. The key advantage of this filter is the large upper stopband without adding any component. Based on good agreement between the results of simulations (using an ECM and a full-wave electromagnetic simulator) and measurements, the proposed filter is appropriate for UWB systems.
Influence of Thermal Aging on Dielectric Properties of Natural Ester Oil-Impregnated Paper

Mineral oil is widely used as a dielectric liquid in high-voltage direct-current (HVDC) converter transformers because of its excellent electrical insulating and cooling properties. Due to the low biodegradability and high fire risk of mineral oil, natural ester oil is gaining considerable interest as a potential alternative for HVDC converter transformers. This requires more information thorough understanding of the electrical behaviors of natural ester oil under various conditions. This article compares the impact of thermal aging on the space charge characteristics of natural ester oil-impregnated paper to mineral oil-impregnated paper. During thermal aging, although the increased acidity caused by the natural ester oil led to more charge accumulation in natural ester oil-impregnated paper compared to the mineral oil, the natural oil-impregnated paper showed a higher dc breakdown voltage.