Miracle-dz/UniFAR-FTUs huggingface dataset:
Contribuições para estratégia de controle aplicada à geração fotovoltaica interconectada à rede elétrica

Generation systems, using renewable sources, are becoming increasingly popular due to the need for increased use of electricity. Currently, ren ewables sources have a role to cooperate with conventional generation, due to the syste m limitation in delivering the required power, the need for reduction of unwanted effects f rom sources that use fossil fuels (pollution) and the difficulty of building new transmi ss on and/or distribution lines. This cooperation takes place through distributed generati on. Therefore, this work proposes a control strategy for the interconnection of a PV (Photo vol aic) system generation distributed with a three-phase power grid through a connect ion filter the type LCL. The compensation of power quality at point of common coupling (P CC) is performed ensuring that the mains supply or consume only active power and that hi s currents have low distorcion. Unlike traditional techniques which require sche mes for harmonic detection, the technique performs the harmonic compensation without the u se of this schemes, controlling the output currents of the system in an indirect way. So t hat here is effective control of the DC (Direct Current) bus voltage is used the robust cont roller mode dual DSMPI (Dual-Sliding Mode-Proportional Integral), that behav es as a sliding mode controller SM-PI (Sliding Mode-Proportional Integral) during the tra nsition and like a conventional PI (Proportional Integral) in the steady-state. For contro l of current is used to repetitive control strategy, which are used double sequence controlle rs (DSC) tuned to the fundamental component, the fifth and seventh harmonic. The output phase current are aligned with the phase angle of the utility voltage vector obtained f rom the use of a SRF-PLL (Synchronous Reference Frame Phase-Locked-Loop). In orde r to obtain the maximum power from the PV array is used a MPPT (Maximum Power Point Tra cking) algorithm without the need for adding sensors. Experimental results a re presented to demonstrate the effectiveness of the proposed control system.
Fundamentals of Laser Micromachining

Introduction Laser Theory and Operation Brief Review of Laser Physics CO2 Lasers Solid-State Nd3+ Lasers Excimer Lasers Fiber Lasers Disk Lasers Ultrashort Pulse (USP) Lasers Comparisons of Laser Sources Optics Optics Beam Delivery Systems-Imaging and Focusing Steps to an Effective Optical Setup Light-Material Interaction Photoablation and Material Interaction with UV Light Thermal Effects Taper Fluence System Integration Processing System Considerations General Requirements Part Viewing Systems Motion Control Part Handling Laser Support Systems Software Safety Discussion of Some Processing Techniques Aligning to Fiducials Laser Drilling Large Numbers of Really Small, High-Aspect Ratio Holes Gas Assist Micromarking Patterning Thin Films Multiple Hole Drilling Using Galvos In-Volume Selective Laser Etching (ISLE) Applications Microelectronics and Semiconductors Medical Devices Defense/Aerospace Renewable Energy Other Materials Metals Ceramics Glasses Silicon and Gallium Arsenide Polymers Diamond Metrology and Cleaning Metrology Postlaser Cleaning Conclusion Appendix: Additional Reading Index
Dynamic characterization of tunable RF MEMS products

The purpose of this paper is to present results of our dynamic characterization of tunable RF MEMS capacitor products that will provide tunable RF solutions for wireless communications. We will present measurement and simulation results for switching time and frequency response of the OPEN and CLOSED MEMS tunable capacitor. The dynamic behavior measurements and models will be used to optimize RF performance.
The Criterion of Red Blood Cell’s Fragmentation and the Turbulent Flow Field Simulation Analysis in the High-Speed Spiral Blood Pump

For a blood pump, the injury to blood is a very important index of its performance. The strongly swirling turbulent flow in the internal flow field of a high-speed spiral blood pump(HSBP), is one of important factors leading to the fragmentation of the red blood cell(RBC) and the hemolysis. The study on the turbulent injure principle of blood in the HSBP is carried out by using the theory of the turbulent flow field and the hemorheology. The determinant gist on RBC turbulent fragmentation is obtained. The turbulent flow in the designed HSBP have been simulated and analyzed by using the multiphase suspend body CFD simulation technology. The simulation results indicate that the turbulence in the designed HSBP can meet the requirements of blood physiology.
Wavelet-based 1/f-Noise elimination in millimeter-wave radiometer

The output signal of millimeter-wave (MMW) radiometer is usually affected by 1/f-noise that is characterized by self-similarity and non-stationary. Wavelet thresholding techniques are widely used to de-noise. However, soft-thresholding has good de-noising effect but is poor in details preservation, and hard-thresholding is good in details preservation but has poor de-noising effect. To eliminate 1/f-noise from white Gauss noise (WGN), an improved thresholding function is introduced in this paper. This method overcomes the permanent bias in soft-thresholding and the discontinuous point in hard-thresholding. Additionally, a least square estimation (LSE) is introduced to estimate 1/f-type parameters. Simulations and experiments have been carried out to validate this method.
Parallel SQL on Tandem's NonStop SQL

A comparison is made of a number of different strategies for the concurrent execution of multiple SQL (structured query language) statements on a completely nonsharing multiprocessor system. The author gives some preliminary results in the form of heuristics derived from measurements on a Tandem system. The measurements indicate that in such an environment in most cases the single evaluation of common subexpressions offers no benefits over concurrent execution. Two heuristics have been identified for the evaluation of two frequent structures. It is shown that vertical partitioning performs better than horizontal partitioning of query trees, and that selections should be pushed down to common subtrees. <<ETX>>
Intravenous Thrombolysis for Acute Ischemic Stroke Occurring during Hospitalization for Transient Ischemic Attack

Background There are limited data regarding the use of intravenous thrombolysis in patients who experienced acute ischemic symptoms during their hospitalization for prior transient ischemic attack. Aim We sought to prospectively evaluate the safety and efficacy of intravenous thrombolysis for the treatment of acute ischemic stroke occurring during hospitalization for transient ischemic attack in an international, multicenter study. Methods Consecutive patients with acute ischemic stroke that occurred during hospitalization for prior transient ischemic attack were treated with intravenous thrombolysis in five tertiary-care stroke centers. Early arterial recanalization was determined by transcranial Doppler at the end of recombinant tissue plasminogen activator infusion using previously validated criteria. Symptomatic intracranial hemorrhage complicating intravenous thrombolysis was evaluated using the National Institute of Neurological Disorders and Stroke Recombinant Tissue Plasminogen Activator Stroke Study definition. Functional independence at three-months was defined as Modified Rankin Scale score of 0–2. Results Systemic recombinant tissue plasminogen activator infusion (median onset-to-treatment time 70 mins, interquartile range 50–150) was given in 25 consecutive patients (mean age 66 ± 10 years) who developed acute ischemic stroke symptoms (median National Institutes of Health Stroke Scale score 10 points; interquartile range 8–14) during hospitalization for prior transient ischemic attack (median ABCD2 score 5 points; median time-to-symptom recurrence 24 h, interquartile range 24–48). No symptomatic intracranial hemorrhage (0%; 95% confidence interval 0–12%) was documented. Early complete recanalization occurred in 64% of patients (95% confidence interval 44–80%), and 84% (95% confidence interval 65–94%) achieved three-month functional independence. The rate of three-month functional independence was higher in patients treated with intravenous tissue plasminogen activator within 90 mins from symptom onset compared with those with onset-to-treatment time>90 mins (81% vs. 33%; P = 0·031). Conclusions Intravenous thrombolysis for symptoms of acute ischemic stroke occurring after hospitalization for transient ischemic attack appears to be safe. These pilot data support resetting the clock if new symptoms recur shortly after transient ischemic attack.
Follow-Up of Boot Camp Graduates Factors That Discriminate between Recidivists, Parole Violators, and Nonrecidivists in a 3-Year

The authors conducted a study of recidivism of 480 male graduates, aged 16 to 40 years, of a boot camp in the South. Discriminant analysis was used to determine what factors discriminated between three outcomes in a 3-year follow-up: (a) nonrecidivists, (b) recidivists who had committed additional crime after graduation from boot camp, and (c) parole violators. Analyses indicated that present age, age when unlawful behavior began, incarceration as a juvenile, several personality deficits, peer influence, and perceptions of boot camp merely as an expedient avenue to release discriminated between recidivists and the other two groups. Self-esteem, self-efficacy, resilience, expectations of future success, and favorable perceptions of various aspects of the boot camp experience distinguished nonrecidivists from others. Practice and policy implications of these findings are discussed. Despite the hyperbole used to describe the innovation of boot camps in the media, and to an extent the professional literature, a military approach to incarceration is not original. Rather, regimens of military discipline were introduced in the Elmira Reformatory in 1888 by Warder Zebulon Brockway (Anderson, Dyson, & Burns, 1999). For more than a century, it has been assumed that regimented discipline instills self-control (M. R. Gottfredson & Hirschi, 1990) in youthful offenders before they become ensnared in a criminal lifestyle (Empey, Stafford, & Hay, 1999). The genre of mandatory participation in demanding regimens aimed at instilling discipline is expected to be assimilated into the inmates’ thinking and motivation. For the first time in many inmates’ lives, they would have consistent demands, expectations, and sanctions placed on them, and the assumption seems to be that this structure would be a welcome change for persons who otherwise have lived vacillating and precarious lives (see reviews, Cronin, 1994; MacKenzie, 1997; Zhang, 1998). The official reason for correctional intervention with inmates in boot camps is rehabilitation. The primary rehabilitative goal of boot camp is to shock neophyte offenders out of a criminal lifestyle by incarceration in an austere environment with regimented drills and demanding structure (MacKenzie & Parent, 1991). Boot camps also are designed to reduce the overcrowding problem in prisons International Journal of Offender Therapy and Comparative Criminology, 45(6), 2001 711-729  2001 Sage Publications
Signaling Pathways Leading to Transcription and Translation Cooperatively Regulate the Transient Increase in Expression of c-Fos Protein*

The mechanisms by which growth factors trigger signal transduction pathways leading to the regulation of c-Fos expression are of great interest. In this study we investigated the effect of hepatocyte growth factor (HGF/SF) and epidermal growth factor (EGF) on the expression of c-fos and its product, c-Fos, in human epithelial cell line MKN74. The expression level of c-Fos protein in HGF/SF-stimulated cells was 5–10-fold higher than that in EGF-stimulated cells, whereas the level of c-fos mRNA induced by HGF/SF was similar to that by EGF. The hyperphosphorylation of eukaryotic initiation factor 4E-binding protein 1 (4E-BP1), indicative of an increased number of translation initiation complexes, was detected only in HGF/SF-induced MKN74 cells. Activation of phosphatidylinositol-3′-OH kinase and FKBP12-rapamycin associated mammalian target of rapamycin (FRAP/mTOR) was observed after the treatment with HGF/SF. Pretreatment with an inhibitor of either one, i.e. LY294002 for phosphatidylinositol-3′-OH kinase or rapamycin for FRAP/mTOR, completely inhibited 4E-BP1 phosphorylation and decreased the c-Fos synthesis induced by HGF/SF down to the level found in EGF-induced cells. These results suggest that the phosphorylation of 4E-BP1 is stimulated by HGF/SF in a manner requiring both phosphatidy-linositol-3′-OH kinase-dependent and FRAP/mTOR-dependent pathways, thereby stimulating c-fos mRNA translation. Regulation of the translation process of c-fos mRNA in addition to the immediate activation of c-fos transcription is necessary for the transient increase in the level of c-Fos protein to stimulate cell proliferation.
Modelling a Supply Chain as a Network of Markets

The field of agent-based computational economics (ACE) studies the macroeconomic regularities emerging from the local interactions of agents. In this paper, we describe a model of supply chains inspired by ACE. To this end, we present how we have connected sets of trading agents with markets so that any supply chain structure may be simulated. The basis of our model is a representation of a supply chain as a network in which every edge represents a marketplace and every node a set of companies. The companies in every node buy in the same market, and sell in another market. We implement this using a modification of the JAVA Auction Simulator API (JASA) which simulates a single auction. As an illustration of our model, we outline three possible studies based on results from the ACE literature, and preliminary results about the first of these studies are reported. The common objective of these three studies is to find new methods to control a complex system
Reduction mammaplasty with the modified round block technique in Chinese patients and its anatomy study

Abstract Background: Although reduction mammaplasty is one of the most common procedures in plastic surgery, it is associated with some serious complications, especially in cases of severe hypertrophy or advanced ptosis, including necrosis of the nipple and areola, absence of normal sensation of the nipple-areolar complex, and loss of lactational function for future nursing. A thorough understanding of the breast anatomy is vital for successful reduction mammaplasty. This article describes the blood supply and innervation of the breasts, and introduces a modified round block technique for reduction mammaplasty based on this anatomy. Methods: Six adult female cadavers were used to assess the vasculature of the anterior thorax and the nerve distribution of the breasts according to vascular perfusion and autopsy. Based on this anatomical study, a modified round block technique was designed for reduction mammaplasty, which was performed in 40 Chinese patients with breast hypertrophy. Results: Würinger’s horizontal septum was observed in all six cadavers. In the superficial layer, the main sources of blood are the second and third intercostal perforating branches of the internal thoracic artery, which run along the medial ligaments, and the branches of the lateral thoracic artery, which run along the lateral ligaments. In the deep layer, the main sources of blood are the fourth and fifth intercostal artery perforators, which run along Würinger’s horizontal septum. Innervation of the nipple-areolar complex is achieved mainly by the lateral branches of the fourth intercostal nerve, which also run along Würinger’s horizontal septum toward the nipple-areolar complex. The 40 patients with breast hypertrophy underwent successful reduction mammaplasty using our modified round block technique, except for one case, which developed necrosis of the nipple-areolar complex. Conclusions: Reduction mammaplasty using our modified round block technique can maximally preserve the blood supply to the remaining gland as well as the innervation to the nipple-areolar complex, while maintaining the advantages of the traditional technique, such as an invisible scar and good projection.
A Multi-agent Immunologically-inspired Model for Critical Information Infrastructure Protection -- An Immunologically-inspired Conceptual Model for Security on the Power Grid

Critical Infrastructure (CI) is the term used to describe assets that are of utmost importance, or in other words, essential in the functioning of an environment. Societies depend on their critical infrastructure in order to maintain and continuously improve on their standards of living. As these systems increasingly depend on cyber-technology, their security on networked environments become crucial. The modern smart grid has become part of CI through the enhancement it provides to regular electricity grid infrastructure. The application of biologically inspired systems to ensure security in aspects such as intrusion detection, access control, anomaly detection and others has become a widely researched field in when dealing with networked computing systems. This paper discusses the importance of CI, the application of artificial immune systems in the protection of CI information systems and proposes a new model for smart grid protection using biologically inspired concepts.
Mitigating Online Product Rating Biases Through the Discovery of Optimistic, Pessimistic, and Realistic Reviewers

The authors of this work present a model that reduces product ratings biases that are a result of varying degrees of customers’ optimism/pessimism. Recently, large-scale customer reviews and numerical product ratings have served as substantial criteria for new customers who make their purchasing decisions through electronic word-of-mouth. However, due to differences among reviewers’ rating criteria, customer ratings are often biased. For example, a 3-star rating can be considered low for an optimistic reviewer. On the other hand, the same 3-star rating can be considered high for a pessimistic reviewer. Many existing studies of online customer reviews overlook the significance of reviewers’ rating histories and tendencies. Considering reviewers’ rating histories and tendencies is significant for identifying unbiased customer ratings and true product quality, because each reviewer has different criteria for buying and rating products. The proposed customer rating analysis model adjusts product ratings in order to provide customers with more objective and accurate feedback. The authors propose an unsupervised model aimed at mitigating customer ratings based on rating histories and tendencies, instead of human-labeled training data. A case study involving real-world customer rating data from an electronic commerce company is used to validate the method.
Signal Detection Analysis of Short‐Term Recall in Schizophrenia

Unlike many traditional performance measures, signal detection indices of sensitivity are free of response biases. Signal detection and traditional indices of performance were obtained from a short-term recall task during distractor and neutral conditions for schizophrenic patients and normal subjects. Items in each condition had been matched previously for difficulty and consistency to determine whether diminished recall during distraction represented a true differential deficit. Results showed similar patterns for both types of indices: normal subjects performed better than patients across both conditions, patients recalled less after presentation of a distractor than during a neutral condition, and normal subjects showed no performance decrement between the two conditions. These findings demonstrated that the differential deficit was due to changes in schizophrenic patients' sensitivity to stimulus items, not response biases.
The relatives’ voice: how do relatives experience participation in reablement? A qualitative study

Background Reablement is an early and time-limited home-based model of rehabilitation intervention with an emphasis on intensive, goal-oriented, and multidisciplinary assistance for persons experiencing functional decline. When rehabilitation in general takes place in the person’s own home, in contrast to an institution, relatives may have larger responsibilities in helping and supporting the family member. Although there is evidence, showing that family caregivers, such as spouses and children, experience burdens and demanding situations related to their caregiving role, there are currently few publications exploring relatives’ experiences of participating in reablement. The aim of our study was to explore and describe how relatives in a community setting in Norway experienced participation in the reablement process. Methods Six relatives participated in semi-structured interviews. Qualitative systematic text condensation was used as the analysis strategy. Results Five themes emerged that summarized the relatives’ experiences with reablement: 1) a wish to give and receive information, wish to be involved; 2) wish to be a resource in reablement process; 3) conflicting expectations; 4) have more free time to themselves; and 5) a lack of follow-up programs. Conclusion Our findings highlight the involvement and collaborative process between health professionals, older adults, and relatives and have practical significance for health care services. To advance collaborative practices, the municipal health and social care services should consider establishing a system or a routine to foster this collaboration in reablement. Follow-up programs should be included.
Alignments of RNA Structures

We describe a theoretical unifying framework to express the comparison of RNA structures, which we call alignment hierarchy. This framework relies on the definition of common supersequences for arc-annotated sequences and encompasses the main existing models for RNA structure comparison based on trees and arc-annotated sequences with a variety of edit operations. It also gives rise to edit models that have not been studied yet. We provide a thorough analysis of the alignment hierarchy, including a new polynomial-time algorithm and an NP-completeness proof. The polynomial-time algorithm involves biologically relevant edit operations such as pairing or unpairing nucleotides. It has been implemented in a software, called gardenia, which is available at the Web server http://bioinfo.lifl. fr/RNA/gardenia.