Miracle-dz/UniFAR-FTUs huggingface dataset:
Investigating the performance of generator protection relays using a real-time simulator.

Real-time simulators have been utilized to perform hardware-in-loop testing of protection relays and power system controllers for some years. However, hardware-in-loop testing of generator protection relays has until recently been limited by a lack of suitable dynamic models of synchronous generators in the real-time simulation environment. Historically, the Park transformation has been chosen as the mathematical approach for dynamic modelling of electrical machines in simulation programs, since it greatly simplifies the dynamic equations. However, generator internal winding faults could not be represented faithfully with the aforementioned modelling approach due to its mathematical limitations. Recently, a new real-time phase-domain, synchronous machine model has become available that allows representation of internal winding faults in the stator circuits of a synchronous machine as well as faults in the excitation systems feeding the field circuits of these machines. The development of this phase-domain synchronous machine model for real-time simulators opens up the scope for hardware-in-loop testing of generator protection relays since the performance of various generator protection elements can now be examined using the advanced features provided by the new machine model. This thesis presents a thorough, research-based analysis of the new phase-domain synchronous generator model in order to assess its suitability for testing modern generator protection schemes. The thesis reviews the theory of operation and settings calculations of the various elements present in a particular representative modern numerical generator protection relay and describes the development of a detailed, real-time digital simulation model of a multi-generator system suitable for studying the performance of the protection functions provided within this relay. As part of the development of this real-time model, the thesis presents a custom-developed real-time modelling approach for representing the load-dependent third-harmonic voltages present in the windings of a large synchronous generator which are needed in order to test certain types of stator-winding protection schemes. The thesis presents the results of detailed, closed-loop testing of the representative generator protection relay hardware and its settings using the developed models on a real-time digital simulator. The results demonstrate the correctness of the modelling and testing approach and show that using the phase-domain synchronous machine model, together with the supplementary models presented in the thesis, it is possible to evaluate the performance of various generator protective functions that could not otherwise have been analysed using conventional machine models and testing techniques.
Low-crosstalk arrayed-waveguide grating multi/demultiplexer with phase compensating plate

The crosstalk of an arrayed-waveguide grating multi/demultiplexer was reduced by employing a phase compensating plate developed for static phase control. Experimental results showed low crosstalk values of -37 and -39 dB for the TE and TM modes, respectively, in an 8/spl times/8 100 GHz-spacing arrayed waveguide grating multi/demultiplexer. This novel method offers polarisation independent phase control for a closely arranged waveguide array.
A novel crossed slotted patch dual‐mode bandpass filter with two transmission zeros

This article presents a miniaturized dual‐mode bandpass filter (BPF) with two transmission zeros and low insertion‐loss using crossed slotted patch resonator. The BPF is mainly formed by a λ/2 patch resonator which is a pair of crossed slots with unequal widths is embedded in the center. By tuning the perturbation element, which resulted from the unequal slot widths along the diagonal, two resonant modes are excited and a pair of transmission zeros are generated to improve the selectivity of the BPF performance. The proposed filter at center frequency (f0) of 1.55 GHz has very good measured characteristics including the bandwidth of 1.49–1.62 GHz (3‐dB fractional bandwidth of 8.4%), low insertion loss of 1.74 ± 0.35 dB. The measured filter performance is in good agreement with the simulated response. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 741–744, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23219
Identifying cryptic fern gametophytes using DNA barcoding: A review

Abstract Ferns and lycophytes are unique among land plants in having sporophyte (diploid) and gametophyte (haploid) generations that can grow independently of each other. While most studies of fern ecology focus on the more visible sporophytic stage, the gametophyte is critically important, as it is the sexual phase of the life cycle. Yet, fern gametophytes have long been neglected in field studies due to their small size and cryptic morphology. DNA barcoding is a powerful method that can be used to identify field‐collected gametophytes to species and allow for detailed study of their ecology. Here, we review the state of DNA barcoding as applied to fern gametophytes. First, we trace the history of DNA barcoding and how it has come to be applied to fern gametophytes. Next, we summarize case studies that show how DNA barcoding has been used to better understand fern species distributions, gametophyte ecology, and community ecology. Finally, we propose avenues for future research using this powerful tool, including next‐generation DNA sequencing for in‐field identification of cryptic gametophytes.
Investigando coerência em postagens de um fórum de dúvidas em ambiente virtual de aprendizagem com o BERT

Incoerências podem causar dificuldades na interpretação de discursos e impactar o desempenho de agentes conversacionais e tutores inteligentes, entre outros. Modelos contextualizados de linguagem como o BERT não foram ainda explorados na análise de incoerência, a despeito de sua eficácia comprovada em diversas tarefas afins. Este trabalho usa variações do BERT em língua portuguesa para classificar e medir coerência textual. Experimentos com textos de notícias e de um fórum educacional de dúvidas de estudantes mostram que o BERT suporta discriminação da ordem de sentenças com até 99,20% de acurácia e algumas medidas de (in)coerência consistentes com tal classificação, sendo a maioria dos melhores resultados para os textos do fórum.
Strata-bound Colonnade Fractures in Argillaceous Sediments of Qasr El Sagha Delta, Fayum-Egypt.

Correponding author: Mohamed S. Hammed, Email: salehhammed@cu.edu. eg Received: 29/10/2021; Accepted: 07/11/2021 DOI: 10.21608/egjg.2021. 103322.1010 ©2021 National Information and Documentation Center (NIDOC) THIS work reports spectacular and unique strata-bound columnar fractures in Late Eocene argillaceous sediments of Qasr El Sagha Delta, Fayum-Egypt. Polygonal fractures are widely distinguished as syn-sedimentary structures attributed to dewatering and simultaneous shrinkage of fine-grained sediments. Exposures permitted visualization of the progressive fracture growth along ca 2 meters high colonnade pillars. The increasing diameter and fracture apertures correlate well with the confined clay thickness. Tetragonal fractures are dominant in ca 3-10cm clay layers, while the hexagonal pattern is dominant in ca > 30cm thick clay beds. Fracture polygons of high frequency, order, and geometrical uniformity are better developed in montmorillonite-rich clays. Fractures have curved and en-passant patterns of ductile clay fracturing during the colloidal phase. Fracturing was developed in substrata conditions under few meters of burial sediments. Fracture apertures either increase or decrease toward the top and bottom layers of better permeability. A decrease of fracture apertures toward the top and bottom sand and silt indicates fracture initiation inside the colloid and limited fluid flows during fracturing. Fracture fills are of two natures: sand injection and deposition of unconsolidated laminated sands with delicate gastropod shells. Occasionally, clay layers form domes and sags with fracture rosettes and filamentous complex networks injected by sand. Mild and episodic seismicity was the main cause of dewatering (water escaping) and fracturing. This study might help during the evaluation of the subsurface non-conventional reservoirs in the Nile Delta, which underwent the same geological conditions.
Genetically induced redox stress occurs in a yeast model for Roberts syndrome

Abstract Roberts syndrome (RBS) is a multispectrum developmental disorder characterized by severe limb, craniofacial, and organ abnormalities and often intellectual disabilities. The genetic basis of RBS is rooted in loss-of-function mutations in the essential N-acetyltransferase ESCO2 which is conserved from yeast (Eco1/Ctf7) to humans. ESCO2/Eco1 regulate many cellular processes that impact chromatin structure, chromosome transmission, gene expression, and repair of the genome. The etiology of RBS remains contentious with current models that include transcriptional dysregulation or mitotic failure. Here, we report evidence that supports an emerging model rooted in defective DNA damage responses. First, the results reveal that redox stress is elevated in both eco1 and cohesion factor Saccharomyces cerevisiae mutant cells. Second, we provide evidence that Eco1 and cohesion factors are required for the repair of oxidative DNA damage such that ECO1 and cohesin gene mutations result in reduced cell viability and hyperactivation of DNA damage checkpoints that occur in response to oxidative stress. Moreover, we show that mutation of ECO1 is solely sufficient to induce endogenous redox stress and sensitizes mutant cells to exogenous genotoxic challenges. Remarkably, antioxidant treatment desensitizes eco1 mutant cells to a range of DNA damaging agents, raising the possibility that modulating the cellular redox state may represent an important avenue of treatment for RBS and tumors that bear ESCO2 mutations.
Multi-input multi-output maximum likelihood detection for a wireless system

A theoretical framework is introduced for analyzing the performance of maximum likelihood detection (MLD) in a multi-input multi-output (MIMO) wireless system with two-dimensional signal constellations (such as QAM and PSK). The framework includes an explicit tight upper bound with an asymptotic form for the probability of symbol error rate (SER), impact of channel estimation accuracy on the performance, investigation of diversity order, and performance comparison among two-dimensional constellation systems.
Zimbabwean Stakeholder Perceptive of How Mandatory Audit Firm Rotation Contribute to Audit Quality

There is a consistent debate in the literature on how mandatory rotation of audit firms (MAFR) contributes to audit quality (AQ). For a reason, some have adopted MAFR while others did not. This study examined MAFR to AQ based on stakeholder perceptions. Theoretical insights were established to explore on existing evidence. A descriptive survey design was carried out with a triangulation approach. Interviews were conducted while at the same time questionnaires were administered to accountants, auditors, investors, and management. A population of 71 listed and audit firms were chosen, of which 29 firms were selected using simple random, systematic and purposive sampling. Correlation and regression analysis were used to examine and interpret the quantitative data. The study's findings indicated that MAFR has a positive relationship with AQ from the linear logistic regression computed; therefore, the null hypothesis is rejected. Meanwhile, having firm audit rotation is compulsory for all listed firms, which increases competition and improves independence and new idea development which ultimately results in improved audit quality. The study, therefore, concludes that MAFR is essential. The study recommends that a further study must be done to address other factors that can enhance AQ constituting 67% shown by the ANOVA test results.
Characterization of a Novel Plasmid in Serratia marcescens Harboring blaGES-5 Isolated from a Nosocomial Outbreak in Japan

Serratia marcescens is a nosocomial pathogen with carbapenem resistance, limiting the availability of effective treatment options. In this study, we performed molecular characterization of GES-5 carbapenemase-producing S. marcescens isolated from an outbreak in Japan. Comparative genetic analysis revealed that the blaGES-5–encoding plasmid p2020-O-9 is a unique plasmid contributing towards carbapenem resistance. Furthermore, this study highlights the necessity of surveillance programs for monitoring novel, along with commonly occurring carbapenemases in clinical settings.
Interstitial High-Dose-Rate Brachytherapy of Liver Metastases in Oligometastatic Patients

Simple Summary Local ablative treatments have emerged as a promising treatment strategy for patients with oligometastatic disease. Interstitial brachytherapy (iBT) is one of the locally ablative treatment options for unresectable liver metastases in oligometastatic disease. We report the feasibility and oncologic outcome of 141 iBT treatments of 244 oligometastatic liver metastases performed in patients with limited tumor burdens in a high-volume center. iBT was feasible, safe and effective in the treatment of oligometastatic liver metastases with good local control rates and low toxicity. Histology and total tumor volume had an impact on local control rates. Abstract Local ablative treatments have emerged as a promising treatment strategy for patients with oligometastatic disease. Among others, interstitial brachytherapy (iBT) is an upcoming treatment option for unresectable liver metastases. We report the feasibility and oncologic outcome of iBT of oligometastatic liver metastases performed in patients with limited tumor burdens in a high-volume center. Patients undergoing iBT between August 2017and March 2019 were included. A retrospective analysis of patient outcomes and treatment complications was performed. Patients treated for metastatic colorectal carcinoma (CRC) were compared to other histologies. A total of 141 iBT procedures were performed in 106 patients (male:52; female:54) and 244 liver metastases. Overall, 51% (54/106) of patients had a diagnosis of metastatic CRC. The median follow-up was 9 months, and overall survival (OS) was 92.3% at 6 months and 76.3% at 12 months. Local-relapse-free survival (LRFS) was 88.4% at 6 months and 71.5% at 12 months, with a significant difference between patients with CRC (84.1% and 50.6%) versus other histologies (92.4% and 92.4%, p < 0.001). A sub-group analysis showed a significant advantage in patients with CRC receiving a minimal dose (D100) of 20 Gy to the planning target volume. Treatments of smaller total liver-tumor volumes (<18 ccm) resulted in better LRFS rates. iBT is a safe and effective treatment approach for oligometastatic liver disease. A higher treatment dose is needed for patients with CRC. Moreover, lower metastatic burdens may be favorable for LRFS. Prospective studies are needed to assess the role of iBT in the oligometastatic setting as an alternative to other local ablative treatment approaches in patients with liver metastases.
Numerical Modeling for the Selection of Coir Geotextile for Erosion Control Application Based on the Universal Soil-Loss Equation

AbstractA fuzzy logic–based modeling approach using the universal soil-loss equation (USLE) along with selection and application of the appropriate coir geotextile (CG) in soil erosion control was attempted in this study. The fuzzy logic model was developed to address issues of soil erosion risk with constant rainfall intensity. Two simple and efficient fuzzy logic soil erosion models were developed, of which one was for predicting soil erosion intensity (fuzzy-soil erosion model, or F-SEM) and the other was for selecting an appropriate CG type for soil erosion control based on types of soil in various combinations of slope angle and length, crop cover, rainfall intensity, and so forth (fuzzy-CG model, or F-CGM). These two models were developed in such a way that the input data requirement was the minimum for model execution. The considered input parameters were the main primary governing factors that influence soil erosion intensity in the USLE platform. F-SEM and F-CGM was compared with actual field dat.
Managing short-term efficiency and long-term development through industrialized construction

There is a strong need for a productive and innovative infrastructure sector because of its monetary value and importance for the development of a sustainable society. An increased level of industrialization is often proposed as a way to improve efficiency and productivity in construction projects. In prior literature on industrialized construction, there are however neither many studies addressing more long-term aspects of innovation and sustainability nor studies within the infrastructure context. Organizational theory suggests that firms need to be ambidextrous and focus on both long-term exploration of new knowledge and technologies and short-term exploitation of current knowledge and technologies, in order to achieve sustainable development. Therefore, an investigation of how both short-term exploitative performance objectives and long-term explorative development can be addressed when implementing industrialized construction in infrastructure projects was conducted. A case study consisting of four infrastructure projects shows that the main drivers for increased industrialization are of an exploitative nature, focusing on cost savings and increased productivity through more efficient processes. The main barriers to increased industrialization are however related to both explorative and exploitative activities. Hence, by managing the identified barriers and explicitly addressing both exploitation and exploration, industrialized construction can improve both short-term efficiency and long-term innovation and sustainability.
A new improved boost converter with ripple free input current using coupled inductors

A new improved boost topology is proposed to reduce the input current ripple. The new topology is realized by adding an extra LC circuit with coupled inductors to the conventional boost topology. The operating principle and the small-signal characteristics are analyzed. Comparisons are made between the proposed improved topology and the conventional boost topology. An experimental converter has been built and tested to verify the theoretical analysis.
Real‐world first‐line systemic therapy patterns in metastatic castration‐resistant prostate cancer

Several systemic therapies have demonstrated a survival advantage in metastatic castration resistant prostate cancer (mCRPC). Access to these medications varies significantly worldwide. In Australia until recently, patients must have received docetaxel first, unless unsuitable for chemotherapy, despite no evidence suggesting superiority over androgen receptor signalling inhibitors (ARSIs). Our study investigated real‐world systemic treatment patterns in Australian patients with mCRPC.
Orchestrating a Heist: Uptake and Storage of Metals by Apicomplexan Parasites

The acquisition and storage of metals has been a preoccupation of life for millennia. Transition metals, in particular iron, copper and zinc, have vital roles within cells. However, metals also make dangerous cargos; inappropriate uptake or storage of transition metals leads to cell death. This paradox has led to cells developing elegant and frequently redundant mechanisms for fine-tuning local metal concentrations. In the context of infection, pathogens must overcome further hurdles, as hosts act to weaponize metal availability to prevent pathogen colonization and spread. Here, we detail the methods used by the Apicomplexa, a large family of eukaryotic parasites, to obtain and store essential metals.
MIMO measurement for double-directional channel modelling

In this paper a parametric modelling approach for double-directional radio channels is introduced that is based on measured data. The MIMO (multiple-input multiple-output) measurement principle using multiple antennas at both the transmitter and receiver site can be effectively exploited to estimate the propagation direction, delay and Doppler shift of any significant path at both ends of the wireless link simultaneously. From the estimated parameter sets a precise reconstruction of the multidimensional wave field in the aperture domains of time, frequency and space is possible. Since this way the measurement antenna properties are excluded from the channel, the influence of a variety of other array architectures can be investigated with the reconstructed wave field. This builds the basis for manifold analyses and simulations of MIMO transmission links in a very realistic way.
An effective decision-support framework for implementing enterprise information systems within SMEs

Small-and-medium enterprises (SMEs) are the backbone of the economy in most countries. With the opening up of the economy, it is crucial that SMEs continuously improve their competitiveness to assert themselves in the global market. There is also a greater need for information integration in SMEs that lack the financial resources and business resilience of large enterprises. This research paper presents the development process of an effective decision-support framework for adopting integrated information systems within SMEs. The methodology comprises 11 steps, such as identifying information systems-related business problems, forming a project team, and assessing legacy systems and software vendors. The development process of the decision-support methodology has passed through four major stages: identifying the required specification of the methodology, selection and justification of the most suitable delivery medium, creating and evaluating a pilot version of the methodology, and developing the final decision-support methodology and the workbook in which it is embodied. An evaluation of the methodology concluded that it would help to improve the outcome of an integrated systems project by providing motivation, saving time, reducing risks, and assisting with decision making.
Design Error Costs in Construction Projects

AbstractDesign errors can adversely influence project performance and can contribute to failures, accidents, and loss of life. Although there has been a considerable amount of research that has examined design error causation, little is known about design error costs. With increasing emphasis placed on the use of nontraditional forms of procurement methods as a result of various government reports and the advent of Building Information Modelling there is a general perception that design error costs will be significantly less than those projects procured by traditional means. By using a questionnaire survey, estimates for design error costs were obtained from 139 projects. The mean direct and indirect costs for design errors were revealed to be 6.85 and 7.36% of contract value, respectively. Design error costs were found not to significantly vary with procurement method and project type used. Although the research provides invaluable insights into practitioners’ perceptions of design errors costs, their ac.
A new bench-scale methodology for evaluating the flammability of live forest fuels

The present study proposes a new method in order to evaluate the flammability of live plant parts at bench-scale. Flammability parameters were estimated by the use of a mass loss calorimeter, and fuel moisture content was evaluated by the use of moisture analyser. Forest fuels (Pinus pinaster, Cistus laurifolius, Lavandula stoechas and Daphne gnidium) were monitored under field conditions to detect the changes in the fuel moisture contents during the fire risk season. The combination of two different bench-scale devices (moisture analyser and mass loss calorimeter) guarantees fixed conditions for carrying out laboratory tests (constant bulk density and constant sample dry mass), thus resolving problems detected with other devices and methodologies.