Miracle-dz/UniFAR-FTUs huggingface dataset:
Automatic measurement of complex tensorial permeability of magnetized materials in a wide microwave frequency range

This paper describes a microwave measurement technique enabling the automatic and broad-band determination of the complex permeability tensor components /spl mu/, /spl kappa/ of magnetized materials. The method is applicable to ferrites, as well as magnetic composite materials. The measurement cell is composed of a nonreciprocal strip transmission line partly filled with the sample that is to be characterized. The data-processing program based on a quasi-static approach is valid whatever the magnetization state of the material is from the total demagnetization state to the saturation. The scattering matrix of the cell is measured in a wide frequency range (130 MHz-6 GHz) with a network analyzer setup. The stripline is set in the air gap of an electromagnet to magnetize the material. The electromagnetic parameters of the sample under test are deduced from the scattering matrix using analytical relations. General equations for /spl mu/ and /spl kappa/ are proposed. Some measurements of magnetized ferrites are reported and compared with values predicted by Polder's relations to validate the technique in the saturation state. To our knowledge, this is the first noniterative measurement method giving /spl mu/ and /spl kappa/ simultaneously in a wide range of frequency.
Pineapple Leaf Phenols Attenuate DSS-Induced Colitis in Mice and Inhibit Inflammatory Damage by Targeting the NF-κB Pathway

Colitis is not fully curable, although currently, some treatment options are being adopted. In this study, we investigated the effects of pineapple leaf phenols (PLPs), natural phenol products from pineapple leaves, on DSS-induced colitis in mice. The results showed that PLPs dramatically decreased the inflammatory response by inhibiting NF-κB activation and the secretion of pro-inflammatory factors. Moreover, PLPs provided protection against DSS-induced acute colitis by maintaining epithelial integrity. Caffeic and P-coumaric acids had similar effects and could be the active components responsible for PLPs’ effect on colitis. These results indicate that the oral administration of PLPs might be considered as a therapeutic strategy in the treatment of patients with colitis. However, further research on clinical applications and the exact effect of PLPs on colitis is required.
Hybrid sensing-based approach for the monitoring and maintenance of shared manufacturing resources

With the rapid development of information technologies, shared manufacturing is proposed to meet the prevailing tendency of servitization and digitalisation in the industry. As the crucial section for performing shared manufacturing, resource monitoring and maintenance aim to detect production exceptions and ensure normal task execution. Existing research mainly uses a resource-centric strategy to acquire production-related data and make decisions for the management of shared resources. The experience data from the users/customers of the shared resources or its similar resources is rarely acquired actively in a cost-effective manner. However, the user/customer's experience data may contain essential knowledge that can be used for effective production performance identification and maintenance. To fill this gap, a hybrid sensing-based approach is proposed to perform the monitoring and maintenance of the shared manufacturing resources. It leverages both the sensor-sensed production data and user/customer-generated data for value creation in a cost-effective manner. Based on the acquired hybrid data, a service model is constructed to achieve the monitoring of the shared manufacturing resource, and a knowledge-based mechanism is designed to perform efficient maintenance. A case study is further presented to verify the effectiveness of the proposed approach.
IDENTIFYING GENERIC AND LOCAL CRITICAL SUCCESS FACTORS FOR ENTERPRISE RESOURCE PLANNING (ERP) SYSTEM IMPLEMENTATION IN PAKISTAN

The main purpose of this article is to empirically identify and evaluate generic and local critical success factors (CSFs) important for enterprise resource planning (ERP) system implementation in Pakistan. To conduct this research, we have used a three-tiered approach. In the first tier, generic critical success factors mentioned in exiting literature are reviewed. In the second tier, based on primary empirical work, we have identified 17 critical success factors from the aforementioned generic factors. In the third tier, we have added a local factor of “Computer literacy training to illiterate end user” to these 17 generic factor and have conducted secondary empirical work. A 10 point Likert rating scale was used to collect degree of agreement from 25 project participants. As a major finding, the five most important factors, according to Pakistani organisations, were top management support, project management, clear goals and objectives, careful selection of ERP software, and data accuracy. However, the local factor “computer literacy training to illiterate end users” was also critical and was more important compared to factors such as steering committee, management of expectation, ERP vendor support, and project champion. The least important factors were project champion, use of steering committee, and ERP vendor support. Keyword: Enterprise resource planning (ERP), Critical success factor, Usability
Review of Solutions to the Cusp-Core Problem of the ΛCDM Model

This review aims at proposing to the field an overview of the Cusp-core problem, including a discussion of its advocated solutions, assessing how each can satisfactorily provide a description of central densities. Whether the Cusp-core problem reflects our insufficient grasp on the nature of dark matter, of gravity, on the impact of baryonic interactions with dark matter at those scales, as included in semi-analytical models or fully numerical codes, the solutions to it can point either to the need for a paradigm change in cosmology, or to to our lack of success in ironing out the finer details of the ΛCDM paradigm.
Benefits of Incorporating Designer Preferences Within a Multi-Objective Airfoil Design Framework

High-fidelity aerodynamic design problems are not easily managed, and identifying all Pareto-optimal design candidates is often unnecessary and computational exhaustive. We propose a variant of a multi-objective particle swarm optimization algorithm that draws on the domain knowledge of the designer to obtain solutions of interest. The swarm is guided by a reference point, which is viewed as an intuitive means of expressing the designer's preferred level of compromise that can ideally be based on some existing or target design. This hybrid methodology enhances the convergence proficiency and exploitation characteristics of the optimizer, due to the locally focused search effort. The algorithm attempts to identify a partial spread of Pareto-optimal designs that provide the most resemblance to the reference-point compromise. The algorithm is applied to a typical transonic airfoil design scenario in which the PARSEC parameterization model is used to represent candidate airfoil geometry, and a Reynolds-averaged Navier-Stokes solver is used to compute the aerodynamic coefficients. A hypervolume performance metric is applied to monitor convergence and solution spread. A data-mining technique using self-organizing maps is introduced and applied for postoptimization tradeoff analyses. Sample design problems are presented that depict the computational efficiency of the optimization framework and have the flexibility to adapt to disparate design philosophies.
A comprehensive survey on computer-aided diagnostic systems in diabetic retinopathy screening

Diabetes Mellitus (DM) can lead to significant microvasculature disruptions that eventually causes diabetic retinopathy (DR), or complications in the eye due to diabetes. If left unchecked, this disease can increase over time and eventually cause complete vision loss. The general method to detect such optical developments is through examining the vessels, optic nerve head, microaneurysms, haemorrhage, exudates, etc. from retinal images. Ultimately this is limited by the number of experienced ophthalmologists and the vastly growing number of DM cases. To enable earlier and efficient DR diagnosis, the field of ophthalmology requires robust computer aided diagnosis (CAD) systems. Our review is intended for anyone, from student to established researcher, who wants to understand what can be accomplished with CAD systems and their algorithms to modeling and where the field of retinal image processing in computer vision and pattern recognition is headed. For someone just getting started, we place a special emphasis on the logic, strengths and shortcomings of different databases and algorithms frameworks with a focus on very recent approaches.
Physical characterization of hot-electron-induced MOSFET degradation through an improved approach to the charge-pumping technique

The physical mechanisms which are involved in the hot-carrier-induced degradation of CMOS transistor are analyzed by means of an improved approach to the charge-pumping measurement technique. The proposed experimental procedure allows the simultaneous characterization of both interface-states generation and carrier trapping in the gate insulator. The analysis is extended to both static and dynamic degradation processes, whose differences and similarities are discussed. >
Control System Design for a Mechatronic Solar Tracker

This paper presents the optimization of a tracking system for photovoltaic modules, regarding the growth of energetic efficiency. The study takes into consideration the optimization of the control system, which is developed with the commercial DFC (Design for Control) software environment EASY5. The tracking system is approached in mechatronic concept, by integrating the control system and the mechanical device of the solar tracker at the virtual prototype level. The optimization is performed by using parametric design technique, the design variables for optimization being the amplification factors of the controllers. The optimization study leads to the maximization of the incident solar radiation gain by minimizing the tracking errors.
Theoretical investigation of 8 /spl times/ 10-Gb/s WDM signal transmission performance based on gain-equalized SOAs using backward Raman pumping at DCF

We have theoretically investigated 8 /spl times/ 10-Gb/s wavelength-division multiplexing (WDM) signal transmission characteristics based on semiconductor optical amplifiers (SOAs) with equalized gain using discrete Raman amplification (DRA). Gain equalization and low noise figures have been obtained by adjusting the backward Raman pumping power and wavelength at a dispersion compensating fiber (DCF) for each span. Bit-error-rate characteristics were calculated for 8 /spl times/ 10-Gb/s WDM signal transmission over 6 /spl times/ 40-km single-mode fiber (SMF) + DCF links with gain-equalized SOAs using DRAs at DCF. Approximately a 2.5-dB improvement of the receiver sensitivity was achieved by using SOAs and DRAs with optimized Raman pumping. One can easily upgrade the transmission length of a link based on SOAs with an appropriate backward pump laser at each DCF.
Reliability study and failure analysis of fine pitch solder-bumped flip chip on low-cost flexible substrate without using stiffener

In flip chip on flex (FCOF) technology, the flexible substrate and the assembly process are essential for the reliability of solder joints. In this research, fine-pitch solder-bumped chips with various chip sizes were assembled on flexible substrates using FCOF technology. The five types of layout design were evaluated for their effects on the assembly process and reliability of FCOF technology. It was found that appropriate substrate layout designs provided more accurate control of the wetting area because they minimized the misalignment between the copper pad and the solder mask opening. The concept of wetting area error ratio is introduced to evaluate the variation of the wetting area on the various layout designs. The shapes of solder joints formed are also related to the flex designs. Die shear test was performed for the samples of FCOF without underfill materials to study the adhesion strength of the copper pad, the solder mask and the base layer. The failed samples after thermal cycling and HAST were analyzed using SAM, an X-ray imaging system, cross-sectioning, and scanning electron microscopy (SEM).
Optimization Design of 'Carbon Steel Heat-Treatment' Experimental Education

In this work, the educational mode and methods are systematically considered and optimized from the aspects of experimental contents, experiments process and evaluation forms. The experimental teaching procedures are extremely enriched. Furthermore, the interest and enthusiasm of students are greatly improved, as well as the cognitive competence, innovativeness and team spirit. As a result, the teaching effects are dramatically improved.
A CMOS power amplifier with power control and T/R switch for 2.45-GHz Bluetooth/ISM band applications

The design and performance of a 2.45-GHz power amplifier with 3-bit digital power control (30-dB control in 5-dB step) and T/R switch for 2.45-GHz Bluetooth and ISM band applications using 0.18-/spl mu/m, single-poly six-metal standard CMOS process with thick top-metal (2-/spl mu/m) and metal-insulator-metal (MIM) capacitor option are presented in this paper. The proposed design uses single-stage Class-AB topology for the power amplifier. In-house extracted models were used for active and passive components to achieve success on silicon for the first time. The power output is +3.5 dBm at 2.45-GHz after the T/R switch. The drain efficiency is 16% including insertion loss of the T/R switch. The circuit operates from a single 1.8V /spl plusmn/ 10% supply and draws total drain current of 8 mA. The operating temperature range is from -40/spl deg/C to +85/spl deg/C.
SFELP-an efficient methodology for microwave circuit analysis

A hybrid method based on the segmentation technique, the finite-element method, and a matrix Lanczos-Pade algorithm (SFELP) for the analysis of microwave circuits is introduced in this paper. This method computes symmetric matrix-Pade approximations of a matrix transfer function for any number of inputs and outputs via a Lanczos-type process (SyMPVL) for obtaining the generalized admittance matrix of a microwave circuit on a wide band of frequencies. The formulation that provides the three-dimensional finite-element/segmentation method is suitable for applying the symmetric Pade via Lanczos algorithm, except for the frequency dependence of the matrix of excitation vectors. In this paper, this problem is analytically overcome for the case in which excitation vectors correspond to modes of homogeneous waveguides or transmission lines. The accuracy and efficiency of the proposed method are shown by means of different examples.
Assessment of Vibration-based Damage Identification Methods Using Displacement and Distributed Strain Measurements

Accurate measurement and monitoring of vibration characteristics is critical for proper detection of the location and severity of damage. However, experimentally measured modal properties are inevitably corrupted by measurement noise and errors, which could render most vibration-based structural damage identification algorithms unreliable for civil structural health monitoring (SHM). This article, through computer simulation and experimental investigation of a simply supported beam, comparatively evaluates the performance of these techniques for practical civil SHM by using displacement modes from accelerometers and long-gage distributed strain measurements. Most of all the techniques proved unreliable for damage identification using noisy measurements from accelerometers, while successful with distributed strain measurements. The findings reveal that long-gage distributed strain measurements are much more efficient choice over the traditional measurement techniques for reliable civil SHM. It may therefore be concluded that the performance of some algorithms might be improved for application to civil infrastructure by using distributed strain fiber optic sensing measurement techniques.
CONTENT BASED EMAIL PRIORITIZATION- A STUDY ON SOCIAL NETWORKS

Now a Day's, Email is one of the most prevalent personal and business communication tool, but it exhibits some significant drawbacks. One of the drawback of this is the portion of e-mail is that spam, has increased dramatically in the past few years. A recent study showed that 52 percent of e-mail users say spam has made them less trusting of e-mail, and 25 percent say that the volume of spam has reduced their e-mail use. This crisis has prompted proposals for a broad spectrum of potential solutions, ranging from more efficient antispam software tools to antispam laws at both the federal and state levels. But Still there is a necessity, to overcome this, in this paper We propose a novel approach that combines unsupervised clustering, social network analysis, semi supervised feature induction, and supervised classification to model user priorities among incoming email messages. This article presents the first study on PEP with a fully personalized methodology, where only each user's personal email data. Finally results show that this method somehow better compared to other methods.
Radiation properties of circumferential slots on a coaxial cable

Both the Galerkin's and mode-matching methods are used to analyze the reflection and radiation properties of a coaxial cable with a circumferential slot on the outer conductor. The effects of higher order modes are also included. The accumulated effect of multiple slots on the reflected signal is also studied by using a Monte Carlo simulation.
Low-frequency reflectivity approximation for two- and three-dimensional EM absorbers

Large-size electromagnetic absorbers are mainly used in anechoic and semi-anechoic chambers for electromagnetic compatibility testing. Therefore, the determination of the reflectivities in the low-frequency range (30-300 MHz) are of paramount importance in the performance evaluation of the absorber and, finally, in a "dark room" design. We here present a low-frequency approximation of the reflectivity based on a boundary and surface integral equation technique. This approach makes it possible to compare the approximation to the rigorous integral equation approach and to other approximations in the literature. The validity of the new low-frequency approximation is discussed based on reflectivity calculations of representative two- (2-D) and three-dimensional (3-D) absorber structures.
A genetic algorithm approach to design flux observer for induction servo motors

In this paper we present a new approach to the design of robust flux observer for induction servomotors. The novelty lies in adopting a genetic algorithms to synthesise a flux observer which is robust against very large perturbations of machine model parameters and different operational conditions. By means of a suitable object function associated to any flux observer it is possible to compare the performances of a population of observers. The genetic algorithm, by means of the mechanism of natural selection and natural genetics drives the evolution of the observer population until an optimal robust flux observer is emerged. <<ETX>>
Self-Participation Experiences among Well-Adapted Hemodialysis Patients

A successful self-participation experience empowers patients to adapt to living with hemodialysis. However, few studies regarding the subjective experiences of such patient participation have been conducted. This study’s purpose was to describe hemodialysis patients’ perspectives on integrating hemodialysis into a new life regarding self-participation experience. A qualitative study using the grounded theory method was applied. Thirty-two well-adaptive hemodialysis Taiwanese patients attended in-depth interviews. “Integrating hemodialysis into a new life journey” was identified as the core category guiding the entire self-participation experience of hemodialysis patients. The three antecedent themes were “Sense of worthlessness”, “Life is still worth living”, and “Friendly and joyful atmosphere of the hemodialysis room”. Once the patients went through the three antecedent themes, they gradually began making efforts to participate more fully in their hemodialysis. Within this participation experience, the hemodialysis patients exhibited these four interactive themes: “Overcoming one’s predicament”, “Integrating self-care skills into my life”, “Resuming previous roles and tasks”, and “Adapting to independent living”. Finally, most adaptive patients master the hemodialysis life. Encouraging patients to discover that their life is worth living and providing a friendly and joyful atmosphere in hemodialysis units are the keys to facilitating patients’ self-participation more fully.
Is Hadley Cell Expanding?

This review provides a comprehensive coverage of changes of the Hadley Cell extent and their impacts on the weather, climate, and society. The theories predicting the Hadley Cell width are introduced as a background for the understanding of the circulation changes and the metrics used for detection. A variety of metrics derived from various data sources have been used to quantify the Hadley Cell width. These metrics can be classified as dynamical, hydrological, thermal, and chemical metrics, based on the properties of the variables used. The dynamical metrics have faster trends than those based on thermal or hydrological metrics, with the values exceeding 1 degree per decade. The hydrological metric edge poleward trends were found a slightly faster expansion in the Northern Hemisphere than its southern counterpart. The chemical metrics show a poleward trend of more than 1 degree per decade in both hemispheres. We also suggest a few reasons for the discrepancy among trends in Hadley Cell expansion found in previous studies. Multiple forcings have been found responsible for the expansion, which seems to be more attributed to the natural variability than anthropogenic forcing. Validation of the scaling theories by the trends in Hadley Cell width suggests that theories considering the extratropical factor would be better models for predicting the Hadley Cell width changes. The Hadley Cell has an impact on different atmospheric processes on varying spatio-temporal scales, ranging from weather to climate, and finally on society. The remaining questions regarding Hadley Cell climate are briefly summarized at the end.
Effect of aging on radiation response of bipolar transistors

A thermally activated aging process is investigated by experimental evaluation of the change in radiation response of test PNP and NPN transistors over a wide range of emitter-base bias conditions after preirradiation elevated-temperature stress and infrared illumination. A comparison of radiation response after temperature stress for transistors with rather different ages is investigated. For "young" transistors, zero change (zero aging) in radiation response after elevated temperature stress at some emitter-base bias was observed. A qualitative physical model is offered to explain the experimental results. The model is based on effect of electron trap accumulation during elevated-temperature stress. Short-time infrared illumination provides effects similar to preirradiation long-term temperature stress and annealing of irradiated devices at elevated temperature.