Miracle-dz/UniFAR-FTUs huggingface dataset:
A suitable dynamic stability index for power systems using PMU data

Interconnected power systems face different contingencies which may result in instability and blackouts. Therefore, online dynamic security analysis is becoming increasingly important. A suitable online stability index shows how close or far the system is from instability; as a result would deliver on-time alarms to system operators when the system is close to instability. This paper presents a practical and efficient method to calculate online dynamic stability index for power systems. The proposed approach does not need the model of the system and uses only the data from Phasor Measurements Units (PMU)s. İn this paper, first seven different dynamic Stability indices are defined and compared to each other under different types of contingencies. Some of the defined indices require only the voltage signal from different PMUs and others require the dominant roots of the system which can be estimated using Prony analysis method. The best criterion is selected based on the simulation results. The effectiveness of the proposed stability index is tested on a complete and accurate model of the Iranian power system. Simulation results revealed that the selected index can provide a good estimation of the distance to system collapse.
Using IT to Share Knowledge and the TRA

Purpose – The major objective of this paper is to examine whether or not information technology (IT) usage to share knowledge is a mediator or moderator of the intention behaviour relationship proposed in the theory of reasoned action (TRA). Design/methodology/approach – A letter of invitation to participate in the study was sent to all of the public‐listed companies in Malaysia. A total of 483 full‐time employees from 23 organizations completed an anonymous, self‐administered survey in a cross‐sectional design. Partial least squares analysis was used to test the conceptual model.Findings – The major finding is that the relationship between the intention to share knowledge and knowledge sharing is partly mediated and not moderated by IT usage to share knowledge.Research limitations/implications – Knowledge sharing was considered only at the individual level. The data are self‐reported, cross‐sectional, from a single source and a single method. The relational and capability‐membership perspective leads to a.
Protective Equipment and Player Characteristics Associated With the Incidence of Sport-Related Concussion in High School Football Players

Background: The incidence of sport-related concussion (SRC) in high school football is well documented. However, limited prospective data are available regarding how player characteristics and protective equipment affect the incidence of SRC. Purpose: To determine whether the type of protective equipment (helmet and mouth guard) and player characteristics affect the incidence of SRC in high school football players. Design: Cohort study; Level of evidence, 2. Methods: Certified athletic trainers (ATs) at each high school recorded the type of helmet worn (brand, model, purchase year, and recondition status) by each player as well as information regarding players’ demographics, type of mouth guard used, and history of SRC. The ATs also recorded the incidence and days lost from participation for each SRC. Incidence of SRC was compared for various helmets, type of mouth guard, history of SRC, and player demographics. Results: A total of 2081 players (grades 9-12) enrolled during the 2012 and/or 2013 football seasons (2287 player-seasons) and participated in 134,437 football (practice or competition) exposures. Of these players, 206 (9%) sustained a total of 211 SRCs (1.56/1000 exposures). There was no difference in the incidence of SRC (number of helmets, % SRC [95% CI]) for players wearing Riddell (1171, 9.1% [7.6%-11.0%]), Schutt (680, 8.7% [6.7%-11.1%]), or Xenith (436, 9.2% [6.7%-12.4%]) helmets. Helmet age and recondition status did not affect the incidence of SRC. The rate of SRC (hazard ratio [HR]) was higher in players who wore a custom mouth guard (HR = 1.69 [95% CI, 1.20-2.37], P < .001) than in players who wore a generic mouth guard. The rate of SRC was also higher (HR = 1.96 [95% CI, 1.40-2.73], P < .001) in players who had sustained an SRC within the previous 12 months (15.1% of the 259 players [95% CI, 11.0%-20.1%]) than in players without a previous SRC (8.2% of the 2028 players [95% CI, 7.1%-9.5%]). Conclusion: Incidence of SRC was similar regardless of the helmet brand (manufacturer) worn by high school football players. Players who had sustained an SRC within the previous 12 months were more likely to sustain an SRC than were players without a history of SRC. Sports medicine providers who work with high school football players need to realize that factors other than the type of protective equipment worn affect the risk of SRC in high school players.
Signals of CP nonconservation in hyperon decay.

We survey the CP-odd asymmetries which can signal CP nonconservation in hyperon decay. The optimal measurement involves the . beta. parameter in the decay distribution, i.e., (.beta.+beta-bar)/(.beta.-beta-bar), which can be quite large in some models. Explicit calculations are provided for all the observables for several theories of CP nonconservation.
OUTCOMES OF REPEAT PARS PLANA VITRECTOMY AFTER FAILED SURGERY FOR PROLIFERATIVE VITREORETINOPATHY

Purpose: To evaluate outcomes of repeat pars plana vitrectomy for proliferative vitreoretinopathy after previous failed pars plana vitrectomy. Methods: This is a retrospective case series including 51 eyes of 50 patients who underwent repeat surgery after failed previous pars plana vitrectomy for proliferative vitreoretinopathy from 2000 to 2015 at the Kresge Eye Institute, Detroit, MI. Patients were classified into successful and unsuccessful groups. Success was defined as retinal reattachment, silicone oil removed, and best-corrected visual acuity (BCVA) ≥5/200 at the final follow-up visit. Results: Forty-three eyes (84.3%) were successfully reattached at the last follow-up. Seventeen (33.3%) eyes were deemed successful and 34 (66.7%) eyes unsuccessful according to our criteria. Compared with the successful group, eyes in the unsuccessful group had more eyes with preoperative BCVA <5/200 (P < 0.001), preoperative BCVA of hand motion or worse (P = 0.002), preoperative flare ≥Grade 2+ (P = 0.03), preoperative posterior breaks (P = 0.02), previous retinectomy (P = 0.04), and final postoperative hypotony (intraocular pressure ⩽ 5 mmHg) (P = 0.005). Eyes with silicone oil removed were more likely to have BCVA ≥5/200 (P < 0.001) at the final follow-up visit. Location of patients >100 miles (P = 0.04) from Detroit and preoperative BCVA of hand motion or worse (P = 0.01) were significantly associated with failure in the logistic regression analysis. Conclusion: Success after repeat surgery for proliferative vitreoretinopathy should include ambulatory vision, retinal reattachment, and silicone oil removal. We identified several preoperative and perioperative factors that were associated with success in the bivariate and logistic analyses. The decision to perform surgical reoperation in these patients should be based on multiple factors, most importantly preoperative BCVA.
New High Order Group Iterative Schemes in the Solution of Poisson Equation

We investigate the formulation and implementation of new explicit group iterative methods in solving the two-dimensional Poisson equation with Dirichlet boundary conditions. The methods are derived from a fourth order compact nine point finite difference discretization. The methods are compared with the existing second order standard five point formula to show the dramatic improvement in computed accuracy. Numerical experiments are presented to illustrate the effectiveness of the proposed methods. Keywords—Explicit group iterative method, finite difference, fourth order compact, Poisson equation.
Error in projection of plane waves using the RWG basis functions

The error in projection of the induced current of a plane wave using the Rao-Wilton-Glisson (RWG) basis functions has been studied numerically. The vector current in a finite area is expanded by full and half RWG basis functions, and the unknown projection coefficients are solved by the Galerkin's method. The error is calculated for different polarizations, different meshes and mesh densities, and different incident angles. It is found that the error in the projection of curl-free vectors is less than that of divergence-free vectors, and the RWG basis has the projection error in range of 10 to 20 percents for the mesh with 10 unknowns per wavelength
Type‐specific associations of human papillomavirus load with risk of developing cervical carcinoma in situ

We have previously shown that high human papillomavirus (HPV) 16 load in Papanicolaou smears negative for dysplasia is strongly associated with risk for carcinoma in situ (CIS) of the cervix. Here we study the amount of HPV DNA for some of the most frequent high‐risk HPV types as determinants of progression to cervical CIS. Real‐time PCR is used to estimate the normalized viral load of HPV 16, 18, 31, 33, 35, 39, 45, 52, 58 and 67 in 457 cases of cervical CIS and 552 matched population controls. A total of 2,747 archival Pap smears from gynecologic health examinations, collected over a period of up to 26 years, were analyzed to assess viral load during the infection history. Cervical smear samples differ widely in amount of DNA, underscoring the need for normalization of HPV load to number of cells in the sample. The risk of developing cervical CIS increases with higher viral load for most of the HPV types studied. The range of copy numbers per cell does not differ between HPV types but the odds ratio for CIS in the percentile with highest viral load is substantially higher for HPV 16 (OR = 36.9; 95% CI = 8.9–153.2) than for HPV 31 (OR = 3.2; 95% CI = 1.1–9.1) or HPV 18/45 (OR = 2.6; 95% CI = 1.0–6.4). Therefore, HPV viral load may be predictive of future risk of cervical CIS at a stage when smears are negative for squamous abnormalities, but differences between HPV types need closer attention. © 2004 Wiley‐Liss, Inc.
Association between Birth Interval and Cardiovascular Outcomes at 30 Years of Age: A Prospective Cohort Study from Brazil

Background Birth interval is an important and potentially modifiable factor that is associated with child health. Whether an association exists with longer-term outcomes in adults is less well known. Methods Using the 1982 Pelotas (Brazil) Birth Cohort Study, the association of birth interval with markers of cardiovascular health at 30 years of age was examined. Multivariable linear regression was used with birth interval as a continuous variable and categorical variable, and effect modification by gender was explored. Results Birth interval and cardiovascular data were present for 2,239 individuals. With birth interval as a continuous variable, no association was found but stratification by gender tended to show stronger associations for girls. When compared to birth intervals of <18 months, as binary variable, longer intervals were associated with increases in height (1.6 cm; 95% CI: 0.5, 2.8) and lean mass (1.7 kg; 95% CI: 0.2, 3.2). No difference was seen with other cardiovascular outcomes. Conclusions An association was generally not found between birth interval and cardiovascular outcomes at 30 years of age, though some evidence existed for differences between males and females and for an association with height and lean mass for birth intervals of 18 months and longer.
Nurses' CE options expand with distance learning.

W ith the nationwide speed-up of patient care practices leaving many nurses scrambling to stay abreast of new staff configurations and responsibilities, it's becoming even more difficult to find the time to keep up with the continuing education credits required for maintaining RN licensure, certification, and recertification. Fortunately, modem technology is opening the door to innovations in nursing continuing education that simplify the process of obtaining CE credit. Some of the more notable innovations include CE offered via audioconferencing, videoconferencing, and the Internet. All three methods constitute an increasingly popular method of education known as distance learning. As the name suggests, distance learning enables nurses to take courses or receive information that count toward CE credit, often without having to leave their homes or work sites. Because it eliminates travel costs and lost work time, distance learning is one of the most costeffective methods available for obtaining CE. And it's equally advantageous for the provider As Kay Caffroy, project manager for the Audio Plus Teleconference Network at the Annenberg Center for Health Sciences in Rancho Mirage, California, puts it, "Audio teleconfer-
Are We a Nation of Tax Cheaters? New Econometric Evidence on Tax Compliance

The theoretical basis for the economic approach to tax compliance has, at least until recently, been inadequate, and the limited empirical work based on it is seriously flawed. In this paper we briefly review both, as well as new theoretical and, especially, empirical work on the tax compliance problem. With respect to the latter we present preliminary results based cm a state-level, time-series, cross-section data set drawn in part from the annual reports of the Commissioner of Internal Revenue.
Electromagnetic Modeling of a Novel Linear Oscillating Actuator

Single-phase linear oscillating actuators (LOAs) produce short-stroke reciprocating motion, and, thus, have many applications. Feasible pole/tooth number combinations for single-phase tubular moving-magnet LOAs are identified and results from a study on a 2-pole LOA equipped with an E-cored stator, and quasi-Halbach magnetized and radially magnetized magnets, respectively, are presented. It is shown that a quasi-Halbach magnetized LOA, in which the magnets are mounted on a ferromagnetic support tube, results in the best electromagnetic performance. Finally, its predicted thrust force characteristic is validated by measurements on a prototype actuator.
Strategies for dealing with future shortages in the nursing workforce: a review

The well-anticipated and well-documented demographic shift attributed to ageing of the baby boomer generation will place significant demands upon the health-care industry in the future. Significant resources such as the nurse workforce, will be needed to provide health-care services to this cohort. There is a looming shortage of professional and paraprofessional nurses. This paper evaluates strategies that can be utilized to decrease the rate of the nursing shortage, while retaining the current supply of nurses. Recommendations for solving the nursing shortage problem include enhancing the work environment through fostering open communication, improving technology, nurse empowerment, building long-lasting and fulfilling partnerships, and efficient workplace organization.
How did A V Hill understand the VO2max and the “plateau phenomenon”? Still no clarity?

Objectives: A recent editorial in Medicine and Science in Sports and Exercise concludes that the study of Hawkins and colleagues confirms “beyond any doubt the proposition of Hill and Lupton”. It is not clear which of Hill and Lupton’s propositions have been proved “beyond any doubt”. Methods: A review of all the relevant publications of A V Hill and his colleagues. Results: Hill and Lupton believed (i) that myocardial ischaemia limits maximal exercise performance by inducing circulatory failure; (ii) that a “governor” protects the ischaemic heart by causing a “slowing of the circulation” during maximal exercise; (iii) that the oxygen cost of running increases exponentially at speeds above 16 km per hour; and (iv) that humans reach their highest measurable oxygen consumption of about 4 litres per minute at that running speed. Hill and Lupton neither invented the concept of the “plateau phenomenon” nor utilised this concept to establish that a “true” maximum oxygen consumption (VO2max) had been achieved. Nor did they measure cardiac output during exercise. Conclusion: Accepting uncritically this modern interpretation of Hill and Lupton’s theory that the cardiac output limits maximal exercise performance whether or not the plateau phenomenon is present fails to answer the question first posed more than 20 years ago: What causes the termination of exercise when the “true” VO2max is achieved without the “plateau phenomenon”? According to the Hill and Lupton model, this cannot be because a limiting cardiac output has been reached. Since a majority of maximal exercise tests terminate in the absence of the “plateau phenomenon”, this is seemingly an important question.
Multirate LQG controller applied to self-location and path-tracking in mobile robots

Presents an approach to solving the linear quadratic Gaussian problem for controlling MIMO multirate sampled-data systems. The problem is split into three parts: first a generalized discrete multirate model is computed, second the solution of the linear quadratic regulator problem is computed and then a multirate Kalman filter is obtained. The model is composed by a time invariant single rate part, involving the basic process dynamics and a periodic one determined by the external sampling strategy. This allows an easy analysis of the effects of the multirate sampling on the plant. The approach has been applied to solve problems of self-location and path tracking in mobile robots. As is common in many auto-guided vehicles the sensory system is very complex, so some kind of sensor data fusion has been implemented.
Human Cytomegalovirus UL84 Oligomerization and Heterodimerization Domains Act as Transdominant Inhibitors of oriLyt-Dependent DNA Replication: Evidence that IE2-UL84 and UL84-UL84 Interactions Are Required for Lytic DNA Replication

ABSTRACT Human cytomegalovirus (HCMV) UL84 encodes a 75-kDa protein required for oriLyt-dependent DNA replication and interacts with IE2 in infected and transfected cells. UL84 localizes to the nucleus of transfected and infected cells and is found in viral replication compartments. In transient assays it was shown that UL84 can interfere with the IE2-mediated transactivation of the UL112/113 promoter of HCMV. To determine whether UL84 protein-protein interactions are necessary for lytic DNA synthesis, we purified UL84 and used this protein to generate a monoclonal antibody. Using this antibody, we now show that UL84 forms a stable interaction with itself in vivo. The point of self-interaction maps to a region of the protein between amino acids 151 and 200, a domain that contains a series of highly charged amino acid residues. Coimmunoprecipitation assays determined that UL84 interacts with a protein domain present within the first 215 amino acids of IE2. We also show that an intact leucine zipper domain of UL84 is required for a stable interaction with IE2 and UL84 leucine zipper mutants fail to complement oriLyt-dependent DNA replication. UL84 leucine zipper mutants no longer interfere with IE2-mediated transactivation of the UL112/113 promoter, confirming that the leucine zipper is essential for a functional interaction with IE2. In addition, we demonstrate that both the leucine zipper and oligomerization domains of UL84 can act as transdominant-negative inhibitors of lytic replication in the transient assay, strongly suggesting that both an IE2-UL84 and a UL84-UL84 interaction are required for DNA synthesis.
A High Voltage High Frequency Resonant Inverter for Supplying DBD Devices with Short Discharge Current Pulses

In this paper, the merits of a high-frequency resonant converter for supplying dielectric barrier discharges (DBD) devices are established. It is shown that, thanks to its high-frequency operating condition, such a converter allows to supply DBD devices with short discharge current pulses, a high repetition rate, and to control the injected power. In addition, such a topology eliminates the matter of connecting a high-voltage transformer directly across the DBD device and avoids the issues related to the parasitic capacitances of the latter which disturbs the control the power transfer to the plasma. The design issues of the converter, including the inverter and its switches, the resonant inductor, and the parameter drift compensation are studied. An experimental validation is performed: a mega Hertz resonant converter using GaN FET switches has been manufactured and tested with an excimer lamp.
Patterns of growth and tract formation during the early development of secondary lineages in the Drosophila larval brain

The Drosophila brain consists of a relatively small number of invariant, genetically determined lineages which provide a model to study the relationship between gene function and neuronal architecture. In following this long‐term goal, we reconstruct the morphology (projection pattern and connectivity) and gene expression patterns of brain lineages throughout development. In this article, we focus on the secondary phase of lineage morphogenesis, from the reactivation of neuroblast proliferation in the first larval instar to the time when proliferation ends and secondary axon tracts have fully extended in the late third larval instar. We have reconstructed the location and projection of secondary lineages at close (4 h) intervals and produced a detailed map in the form of confocal z‐projections and digital three‐dimensional models of all lineages at successive larval stages. Based on these reconstructions, we could compare the spatio‐temporal pattern of axon formation and morphogenetic movements of different lineages in normal brain development. In addition to wild type, we reconstructed lineage morphology in two mutant conditions. (1) Expressing the construct UAS‐p35 which rescues programmed cell death we could systematically determine which lineages normally lose hemilineages to apoptosis. (2) so‐Gal4‐driven expression of dominant‐negative EGFR ablated the optic lobe, which allowed us to conclude that the global centrifugal movement normally affecting the cell bodies of lateral lineages in the late larva is causally related to the expansion of the optic lobe, and that the central pattern of axonal projections of these lineages is independent of the presence or absence of the optic lobe. © 2015 Wiley Periodicals, Inc. Develop Neurobiol 76: 434–451, 2016
VARIAÇÃO ESPACIAL DA PRECIPITAÇÃO DAS CIDADES DO CENTRO DO SUL DO ESTADO DO CEARÁ, BRASIL

A quantidade de chuva representada em uma regiao e um dos fatores mais importantes para a caracterizacao do clima e, por conseguinte, nas relacoes de consumo da mesma. E importante tambem para o desenvolvimento socioeconomico de uma regiao, tendo em vista o seu diverso uso em todos os setores. Analis ou -se, neste trabalho, a espacializacao da variabilidade da precipitacao media num periodo de 10 anos das cidades do Centro Sul do Ceara com o objetivo de caracterizar quais cidades estao sofrendo com a estiagem/seca e o que deve ser feito para que este cenario mude. Os resultados obtidos foram de que numa pequena regiao ha bastantes oscilacoes quanto a precipitacao, que grandes partes dos municipios estudados estao abaixo da media gerada e que eventos como El Nino, La Nina e Zona de Convergencia Intertropical (ZCIT) podem influenciar no regime pluviometrico quando sendo analisadas em conjunto, nao separadamente. Tambem se concluiu que a espacializacao tem serventia de maneira geral para fins de dimensionamento agronomicos e armazenamento de agua em lugares estrategicos.