Miracle-dz/UniFAR-FTUs huggingface dataset:
A Real-Time Predictive-Maintenance System of Aluminum Electrolytic Capacitors Used in Uninterrupted Power Supplies

This paper presents a low-cost method to realize a real-time condition monitoring and a predictive-maintenance system of an electrolytic capacitor used in uninterruptible power supplies (UPSs). This method consists in detecting the changes in real time of the equivalent series resistance and the capacitance C values of the electrolytic capacitors. Simulation and experimental results are presented to illustrate the proposed monitoring technique. The proposed method can be used in UPS where waveforms are continuously varying in amplitude, frequency, and temperature. The proposed online failure prediction method has the merits of using only the existent resources in UPS and with the use of known algorithms.
Mapping A Discipline: A Guide to Using VOSviewer for Bibliometric and Visual Analysis

ABSTRACT In the age of information, data collected from database publishers can tell a story. Over time, research publications from an institution can reveal patterns in the work of faculty, students, and researchers. This is illustrated using visualization platforms such as VOSviewer. Information professionals can generate these visualizations to reveal researcher collaborations and trends in research topics supporting subject liaison service and collection activities. In this article, VOSviewer is used to discover the relationship of publications from campus authors within engineering fields. A discussion of the steps taken in this study will help guide information professionals, librarians, or researchers in taking this approach to understanding research and publications.
Mudança social com storytelling: análise de uma campanha

Objetivo: descrever e analisar a aplicação da ferramenta Storytelling quando utilizada por uma organização para a promoção da Educação Ambiental não formal, instigando a mudança social Metodologia: foi utilizada a técnica de observação, a qual permitiu, através dos dados coletados, a elaboração da Análise de Discurso dos oitos vídeos da campanha. A Teoria Ator-rede foi empregada para mapear os atores humanos e não humanos existentes e revelar as suas conexões. Resultados: percebe-se que a intensão da organização é de promover a educação ambiental de maneira não formal e compartilhar entre a população de Paranaguá ações e novos hábitos que podem ser adotados para a preservação do meio ambiente e a manutenção de uma cidade limpa. Para alcançar essa proposta, a empresa usou a ferramenta Storytelling para compartilhar esse conhecimento e promovê-lo entre o seu público. Conclusões: Apesar de alguns materiais analisados apresentarem o conhecimento implicitamente, ainda assim é possível identificar que há o interesse e o estímulo do desenvolvimento boas práticas ambientais.
Evaluation of Uncertainties in the Seismic Assessment of Existing Masonry Buildings

The assessment of existing masonry buildings is an important issue in earthquake prone countries like Italy. The current Italian building code, which adopts the approach proposed by Eurocode 8, includes an assessment procedure based on the use of confidence factors, whose values depend on the level of knowledge of the structure. These factors are intended to take into account all possible uncertainties related to the incomplete knowledge of the structure. This article investigates the reliability of the code-based procedure for the assessment of existing masonry buildings and pinpoints some problematic aspects. The approach followed is the simulation of the entire code-based assessment procedure, with the flow of decisions that an engineer would face in the assessment of an existing building schematized in the form of a logic tree. The proposed simulated procedure accounts for different sources of epistemic uncertainty like the selection of the level of knowledge, uncertainty in the results and location of in-situ tests, identification of several structural details, etc. A Monte Carlo procedure allows the simulation of a large number of random assessments intended to be performed by different virtual engineers. The results are then compared with those coming from the assessment of the “perfectly known” structure, used as a benchmark, providing an estimate of the validity of the codified assessment methodology.
The Study on Roadway Layout in Coordination of Mining Coal Seams Base on Failure of Floor Strata

In order to make sure the reasonable roadway layout in lower seam of close coal mining group coordination in Lijiahao coal mine, firstly, applying the theoretical analysis and geological radar detection to get the influence depth of mining from the up coal seam 2-2 to the floor is about 20m, the results show that the thickness of complete strata is about 15m, then determining to use the outward alternate entries in lower seam roadway by using theoretical analysis. At last, determining the distance of outward alternate entries is 12-14m by using FLAC3D numerical simulation software to simulate the change of stress and displacement in roof floor and two sides of roadway.
Variable-length cylindrical post in a rectangular waveguide

The problem of a thin variable-length cylindrical post in a rectangular waveguide is investigated by an approach which permits the current distribution on the post to be determined accurately. This in turn permits the reflection coefficient to be evaluated accurately. The case considered is that where the frequency and waveguide dimensions are such that only the TE10 mode can propagate. Off-centred posts, little considered in previous studies, are specifically considered, as are the resonance characteristics of the post. An experimental study is also reported which demonstrates the accuracy of the theoretical predictions.
1.1.2 Moving the Mindset: from Safety to Systems Safety

Safety is the focus when accidents occur, and the default approach among the experts deployed to investigate such safety incidents, is to concentrate on the technology issues or human errors in isolation. While specific technical faults or human errors can typically be identified as having initiated the safety breach, widening the focus to gain a more systemic understanding of the context within which the accident occurred, is increasingly being recognised as best‐practice. Using the background of some important advances in the field of systems safety by authors such as Jackson and Leveson, this paper draws out the crucial role of the socio‐technical aspects.
Fundamentals of Geotechnical Engineering

Principles of Foundation Engineering and Principles of Geotechnical Engineering were originally published with 1984 and 1985 copyrights, respectively. These texts were well received by instructors, students, and practitioners alike. Depending on the needs of the users, the texts were revised and are presently in their eighth editions. These texts have also been translated in several languages. Toward the latter part of 1998, there were several requests to prepare a single volume that was concise in nature but combined the essential components of Principles of Foundation Engineering and Principles of Geotechnical Engineering. In response to those requests, the first edition of Fundamentals of Geotechnical Engineering was published in 2000. This text includes the fundamental concepts of soil mechanics as well as foundation engineering, including bearing capacity and settlement of shallow foundations spread footings and mats), retaining walls, braced cuts, piles, and drilled shafts.
Characterization of current-induced degradation in Be-doped HBTs based in GaAs and InP

The changes in the device characteristics under high-bias conditions are investigated for InAlAs/InGaAs and AlGaAs/GaAs heterojunction bipolar transistors (HBTs) with heavily Be-doped base lasers, focusing on the base current and 1/f noise characteristics. It is shown that the ideality factor of the surface recombination base current provides information on the Be movement accompanying the degradation. For stress current densities up to 1.5*10/sup 5/ A/cm/sup 2/, the Be movement in the InAlAs/InGaAs HBTs is estimated to be no more than a small fraction of the 5 nm setback layer. The 1/f noise measurement highlight the effect of current stressing on the surface recombination in the HBTs. A characteristic spectral shape is found in the noise spectra for the current-stressed AlGaAs/GaAs HBT, possibly originating from the degradation-induced carrier traps. Although both HBTs have similar electronic properties, these results illustrate the striking difference in their stress current behaviors. >
Research on Logistics Sorting System Based on RFID

With the rapid development of express logistics business side, the traditional sorting has been unable to meet the needs of the logistics courier logistics development. In this case, the article combined with RFID radio frequency technology, put forward new ideas on the transformation of traditional logistics sorted. By adding RFID tags and binding RFID tags on waybill number, Comparison test validate and affirm that the RFID technology of sorting system is usability and ease of use.
Evaluation of Human Bone Marrow Mesenchymal Stromal Cell (MSC) Functions on a Biomorphic Rattan-Wood-Derived Scaffold: A Comparison between Cultured and Uncultured MSCs

The reconstruction of large bone defects requires the use of biocompatible osteoconductive scaffolds. These scaffolds are often loaded with the patient’s own bone marrow (BM) cells to facilitate osteoinductivity and biological potency. Scaffolds that are naturally sourced and fabricated through biomorphic transitions of rattan wood (B-HA scaffolds) offer a unique advantage of higher mechanical strength and bioactivity. In this study, we investigated the ability of a biomorphic B-HA scaffold (B-HA) to support the attachment, survival and gene expression profile of human uncultured BM-derived mesenchymal stromal cells (BMSCs, n = 6) and culture expanded MSCs (cMSCs, n = 7) in comparison to a sintered, porous HA scaffold (S-HA). B-HA scaffolds supported BMSC attachment (average 98%) and their survival up to 4 weeks in culture. Flow cytometry confirmed the phenotype of cMSCs on the scaffolds. Gene expression indicated clear segregation between cMSCs and BMSCs with MSC osteogenesis- and adipogenesis-related genes including RUNX2, PPARγ, ALP and FABP4 being higher expressed in BMSCs. These data indicated a unique transcriptional signature of BMSCs that was distinct from that of cMSCs regardless of the type of scaffold or time in culture. There was no statistical difference in the expression of osteogenic genes in BMSCs or cMSCs in B-HA compared to S-HA. VEGF release from cMSCs co-cultured with human endothelial cells (n = 4) on B-HA scaffolds suggested significantly higher supernatant concentration with endothelial cells on day 14. This indicated a potential mechanism for providing vasculature to the repair area when such scaffolds are used for treating large bone defects.
Overview of conductive adhesive interconnection technologies for LCD's

In the field of flat panel displays, packaging technology has a significant influence on display performance. The electrical interconnect between the LCD and the LCD driver circuit is an area that needs improvement to achieve finer pitch, easier assembly and greater connection reliability. For LCD driver packaging, the ideal assembly process would possess the following characteristics: low processing cost; reliability suitable to the final application; high-density, fine pitch capability; low product profile; acceptable joint resistance; ease of inspection; and reworkability. The overall trend in LCD driver IC packaging has been to move the driver IC closer to the LCD itself. At present, TAB is the predominant packaging approach for large area LCDs. In most cases, the TAB is directly connected to the ITO traces on the glass using anisotropic conductive adhesive (ACA). In chip-on-glass (COG) technology, the driver LSI chips have moved all the way on to the LCD glass itself. COG is typically done by flip chip, also often with the use of conductive adhesives. ITO traces fan out from the IC to the display area, as well as to the point where a polyimide flexible circuit is connected to the glass substrate to supply power and picture information. COG mounting is currently being used in a number of products, in particular when the pixel density is high.
Adoption of agro-forestry technologies among small- holder farmers: A case of Zimbabwe

The objectives of this study were to assess and compare the levels of adoption of agro-forestry technologies between trained and untrained farmers, and identify specific factors that affect adoption of technologies. Data from 300 smallholder farmers selected by snowballing from villages where change agents had been trained by the International Center for Research in Agro Forestry was collected using structured questionnaires. The data were analyzed using the Statistical Package for the Social Science and Microsoft Office Excel. The results showed that there was low level of awareness of agro-forestry technologies among farmers. Formally trained farmers adopted agro-forestry technologies more than informally-trained farmers. Logit regression results showed that the likelihood to adopt live fence was influenced significantly by land ownership, awareness, training, drought, labour and local institutions (p<0.05). Adoption of trees for nutrition was influenced by belonging to a farming group, awareness, training, land size and local institutions (p<0.05). Adoption of improved fallows was influenced by employment status, belonging to farm group, awareness and land size (p<0.05). Factors that influenced adoption of fodder banks were employment status, awareness and training (p<0.05).
Biologically-inspired optimal control: learning from social insects

In the last few years, efforts to codify the organizing principles behind biological systems have been capturing the attention of a growing number of researchers in the systems and control community. This endeavour becomes increasingly important as new technologies make it possible to engineer complex cooperating systems, that are nevertheless faced with many of the challenges long overcome by their natural counterparts. One area in particular where biology serves as an inspiring but still distant example, involves systems in which members of a species cooperate to form collectives whose abilities are beyond those of individuals. This paper looks to the process by which ants optimize their foraging trails as inspiration for an organizing principle by which groups of dynamical systems can solve a class of optimal control problems. We explore the use of a strategy termed ‘local pursuit’, which allows members of the group to overcome their limitations with respect to sensing range and available information through the use of neighbour-to-neighbour interactions. Local pursuit enables the group to find an optimal solution by iteratively improving upon an initial feasible control. We show that our proposed strategy subsumes previous pursuit-based models for ant-trail optimization and applies to a large array of problems, including many of the classical situations in optimal control. The performance of our algorithm is illustrated in a series of simulations and experiments.
Numerical investigation on adsorbent particle erosion characteristic of Y-shaped pipeline in S Zorb regeneration system with different influencing parameters

As the transportation pipeline of adsorbent in S Zorb regeneration system, due to large mass flow rate of particle and gas, it is often seriously worn, and even perforated, resulting in the leakage of adsorbent. It brings great inconvenience to the transportation of regenerated adsorbent and threats its long-term operation. Therefore, it is essential to study the erosion characteristic of Y-shaped adsorbent transportation pipe. It was studied by computational fluid dynamics (CFD) numerical simulation and the calculation results were validated by actual erosion profile. The results show that the high velocity of nitrogen and the high weight-fraction adsorbent particles accumulation is the key factor leading to severe erosion. It is also found that the small angle cutting is the erosion form. The effects of the intersection angle between the transportation pipe and feed pipe and the gas inlet velocity on the particle motion and erosion characteristics turn out to be significant. The research on the wear characteristics of adsorbent transportation pipeline can provide a certain reference for erosion prevention and optimization.
COMPARISON OF THE HAND-DRIBBLING MOTION BETWEEN SKILLED AND UNSKILLED SUBJECTS

The purpose of this study was to investigate the differences in the kinematics of skilled and unskilled between the skilled and unskilled dribblers. Ten male university basketball players as the skilled subjects and thirty males as the unskilled ones participated in this study. The three-dimensional coordinate data of reflective markers on the body and a ball were captured with a VICON system operating at 250Hz. The skilled players employed the external-internal rotation and adduction-abduction of the shoulder and the forearm supination-pronation to achieve longer contact time and lower catch and release heights.
E-Bayesian Estimation Method and its Applications in Reliability Engineering

Evaluation method of reliability of industrial products needs to be improved effectively with the advance of science and technology. This paper introduces a new method, named E-Bayesian estimation method, to estimate failure probability in reliability engineering. The definition of E-Bayesian estimation of the failure probability is provided, moreover, the formulas of E-Bayesian estimation and hierarchical Bayesian estimation of the failure probability were provided, and properties of the E-Bayesian estimation, i.e. relations between E-Bayesian estimation and hierarchical Bayesian estimation, are also provided. Finally, calculation on practical problems shows that the provided method is feasible and easy to perform.
Resilience design in all-optical ultralong-haul networks

Feature Issue on High Availability in Optical NetworksAfter many years of research and industry efforts, ultralong-haul (ULH) technologies for DWDM transport are maturing, and carriers are deploying them for high capacity and capital savings. Unlike opaque optical networks, it is still uncertain how best to restore an all-optical ULH network after failure. This paper focuses on this issue and proposes a standby restoration scheme and its variants with different restoration speed and associated restoration cost. Our observations suggest that the proposed hot standby scheme would yield both faster restoration and cost efficiencies compared with other schemes.
Soil Bed System for Control of Rendering Plant Odors

Biofilter technology has been applied recently to treating rendering odors. Soil beds are one class of biofilter but as yet have not been used for this application. Although wet scrubbers have been a traditional method of odor control, their capital and operating costs are impacting more severely. Soil bed systems are less expensive to install and operate. A soil bed system was installed at a rendering plant in Arizona and has been in operation since September 1983. The soil bed treats 1100 m3/h (650 cfm) of cooker noncondensables with a surface area of 420 m2(4500 ft2). The pressure drop across the soil bed is 5 cm (2 in.) of water. Odor sensory testing with the MTRI forced-choice triangle dynamic olfactometer indicates an odor removal efficiency of 99.9 percent is obtained with the soil bed. Soil bed odor removal efficiency is equivalent to or superior than that for incineration or scrubbing of high intensity odors from the rendering process. Recent experience during this past winter indicates a soil be.
Recommendations for traveling to altitude with neurological disorders

Background Several neurological conditions might worsen with the exposure to high altitude (HA). The aim of this review was to summarize the available knowledge on the neurological HA illnesses and the risk for people with neurological disorders to attend HA locations. Methods A search of literature was conducted for several neurological disorders in PubMed and other databases since 1970. The neurological conditions searched were migraine, different cerebrovascular disease, intracranial space occupying mass, multiple sclerosis, peripheral neuropathies, neuromuscular disorders, epileptic seizures, delirium, dementia, and Parkinson’s disease (PD). Results Attempts were made to classify the risk posed by each condition and to provide recommendations regarding medical evaluation and advice for or against traveling to altitude. Individual cases should be advised after careful examination and risk evaluation performed either in an outpatient mountain medicine service or by a physician with knowledge of HA risks. Preliminary diagnostic methods and anticipation of neurological complications are needed. Conclusions Our recommendations suggest absolute contraindications to HA exposure for the following neurological conditions: (1) Unstable conditions–such as recent strokes, (2) Diabetic neuropathy, (3) Transient ischemic attack in the last month, (4) Brain tumors, and 5. Neuromuscular disorders with a decrease of forced vital capacity >60%. We consider the following relative contraindications where decision has to be made case by case: (1) Epilepsy based on recurrence of seizure and stabilization with the therapy, (2) PD (± obstructive sleep apnea syndrome-OSAS), (3) Mild Cognitive Impairment (± OSAS), and (4) Patent foramen ovale and migraine have to be considered risk factors for acute mountain sickness.
Time-domain macromodel of planar microwave devices by FDTD and moment expansion

The microwave design of highly complex systems can be addressed by segmentation techniques. To this purpose, a subsystem macromodel, such as the impulse response matrix, needs to be computed in an accurate and efficient way. In this paper, we present a combined procedure, based on finite-difference time-domain and a moment-expansion deconvolution by which the impulse response matrix is obtained via time-domain processing only. The algorithm has been tested on microwave planar devices with satisfactory accuracy.
Social discovery tools: Cataloguing meets user convenience

This paper examines how library users access, use, and interact with two social discovery systems used in two Canadian public library systems. How do public library users interact with social discovery systems? How does usage between the two social discovery systems compare? Daily transaction logs of the social discovery systems used by the two libraries were compiled from May-August, 2010. Fifty sets of bibliographic records were compared to evaluate user-contributed content. Results indicate that features that allow for user-generated content are underused in both systems. Future research will thus focus on clients' motivations for engaging with the social features of social discovery systems, and their perceptions of, and satisfaction with, the benefits of these features.