Miracle-dz/UniFAR-FTUs huggingface dataset:
Reconstrução de Árvores Filogenéticas a partir de mtDNA usando o Algoritmo SEQUITUR

—Phylogenetic analysis of genomic sequences gathers information about the biological diversity and genetic classiﬁcation of organisms. This analysis is commonly done using sequence alignment techniques. However, these methods have a high computational cost, especially as the length of genomic sequences grow. In this paper, it is proposed to use the SEQUITUR algorithm to deﬁne the distance between mtDNA sequences of ten species. The results obtained from the proposed method were compared with those generated based on previous approaches that used the Lempel-Ziv algorithm. The phylogenetic trees generated were similar in both cases, producing the same clusters according to the major groups analyzed. However, the average time for generating the trees using SEQUITUR was in the order of minutes, while using Lempel-Ziv was hours. Thus, the proposed method has preferable characteristics in the application of tree reconstruction from DNA sequences.
Optical WDM rings using a smart wavelength routing assignment

Functionality is inserted into the physical layer of WDM optical networks in order to provide for an efficient carrier routing and packet‐addressing scheme. No optoelectronic conversions are needed along the network nodes, except at the source and destination nodes. Tuned transmitters or receivers are not used. The ancillary network routing management structure is dramatically reduced, together with the total network cost. Simple and efficient mechanisms to avoid optical carrier modulation inefficiency and data collision are introduced. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 34: 121–125, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10392
EMC characterization of SMPS devices: circuit and radiated emissions model

Since the efficiency of switched mode power supplies (SMPS) is much higher than that of linear power supplies, this type of supply has gained favor among designers and manufacturers. Switching frequencies extend from tens to hundreds of kilohertz with the result that radiation from circuits carrying switched current is becoming more of a problem. This paper addresses the modeling of the converter section of an SMPS in order to calculate the current distribution and the radiated electromagnetic field. The inhomogeneities in the circuit are by equivalent electrical parameters and a technique is introduced to take into account the fictitious effects on radiation due to the electrostatic terms in the dipole equations. The global approach is validated by comparison of the computed results with those measured for a simple and clearly arranged SMPS experimental setup.
Improved Fixed-Time Stability Lemma of Discontinuous System and its Application

As is known to all that the Lyapunov-Krasovskii functional (LKF) has played a vital role in studying the fixed-time (FXT) stability of the time-delayed Filippov discontinuous systems. When investigating the FXT stability of the time-delayed discontinuous systems, the interesting topic is to provide the more relaxed conditions imposed on the LKF and obtain the more accurate settling-time (ST). This paper aims to investigate the new FXT stability lemma with more relaxed conditions for the time-delayed Filippov discontinuous systems. By using some novel inequality techniques and analytical methods, the new FXT stability lemma is established and more accurate ST is estimated. The traditional discussion about <inline-formula> <tex-math notation="LaTeX">$0 < V < 1$ </tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">$V \geq 1$ </tex-math></inline-formula> is not required. For the purpose of validation, FXT stabilization of discontinuous inertial networks with mixed time delays is considered. By using differential inclusions theory and the new FXT stability lemma, the delay-dependent FXT stabilization criteria are derived. It is the first time to derive the delay-dependent FXT stabilization criteria for the discontinuous inertial networks. Finally, examples are given to show the effectiveness of the established results.
A review of IGBT models

In this paper, insulated gate bipolar transistor (IGBT) models published in the literature are reviewed, analyzed, compared and classified into different categories according to mathematical type, objectives, complexity, accuracy and speed. Features of the different models are listed. Different modeling criteria are discussed according to various circuit conditions, structures, thermal considerations and accuracies. Some problems and trends in IGBT modeling are discussed.
Aspect of on-line and off-line PD diagnosis of distribution power cables

In this paper, fundamental aspects of on-line PD diagnostics are evaluated, especially in respect to the information transferability of off-line PD diagnostics. In particular, different influencing aspects of on-line PD diagnostics are investigated. Finally, based on field measurements a study for the usefulness and effectiveness of the practical application of on-line PD detection diagnostic for power cables, as a pre-selecting method for off-line diagnostics is discussed.
Effect of wind turbine parameters on the capacity adequacy of generating systems using wind energy

The production of electricity by a wind turbine at a specific site depends on many factors. These factors include the wind speed conditions at the site and the characteristics of the wind turbine generator (WTG) itself, particularly the cut-in, rated and cut-out wind speed parameters. There are many different types of wind turbines commercially available on the market. It is therefore desirable to select a wind turbine which is best suited for a particular site in order to obtain the maximum capacity benefit at the given criterion risk level. This paper illustrates the effect of different wind turbine design parameters on the basic adequacy indices and the load carrying capacity benefit ratio (LCCBR) using a small test system. The case studies also show how an optimum site-matching wind turbine can be selected using the LCCBR.
Experimental Determination of Computed Tomography Settings for Jaw Scanning

Aim of our study is to develop a method for the experimental identification of the settings of a computed tomography (CT) scanner used for scanning of human jaw. I this case, CT can be used for rapid prototyping of human jaw, design and manufacture of implants. The experimental identification of settings of a computed tomography scanner is done by comparing 3D computer models built using different data acquisition technologies: CT scanner and 3D laser scanner. The modified Iterative Closest Points algorithm is used for alignment of 3D computer models, obtained using different scanning methods. The different test objects were scanned using a spiral CT scanner and 3D laser scanner for testing the method. 3D computer models were compared uding the mean square value of distance between two surfaces. The test results indicate hardware and software parameters impacting on the accuracy and surface quality of 3D computer model reconstructed from CT data. Ill. 5, bibl. 7 (in English; abstracts in English and Lithuanian). http://dx.doi. org/10.5755/j01.eee. 111.5. 373
MRMR Aplicado a Sinais de EEG para Classificação de Emoções

—Emotion classiﬁcation through EEG signals has attracted the attention of researchers in several ﬁelds, including those studying brain-computer interfaces. This work focus on feature selection necessary to achieve a good classiﬁcation performance. We propose a modiﬁcation on the Maximum Relevance Minimum Redundance method, applying it to EEG signals without the need of a discretization step. We show how the proposed method signiﬁcantly improves the classiﬁers performance when compared to the use of classical PCA.
HANDBOOK OF OPERATIONAL AMPLIFIER APPLICATIONS

While in the process of reviewing Texas Instruments applications notes, including those from Burr-Brown – I uncovered a couple of treasures, this handbook on op amp applications and one on active RC networks. These old publications, from 1963 and 1966, respectively, are some of the finest works on op amp theory that I have ever seen. Nevertheless, they contain some material that is hopelessly outdated. This includes everything from the state of the art of amplifier technology, to the parts referenced in the document – even to the symbol used for the op amp itself:
Modeling Pulsed-Blowing Systems for Flow Control

A linear model for analyzing the performance of pulsed-blowing actuator systems commonly used in many flow-control applications is presented and compared with experiments. The pulsed-blowing system consists of a regulated air supply, an oscillatory valve, transmission tubing, and an actuator. The elements of the actuator are a cavity and slot at the location in the flow to be controlled. The typical design objective is to achieve the largest possible velocity-fluctuation levels at the actuator-slot exit for a given fluctuating pressure input. However, the performance of the system is strongly dependent on component geometry, flow rate, and frequency of pulsation. Lumped-element models are useful for estimating the performance of the actuator cavity and slot, but fail to account for the effects of the transmission tubing. A distributed model for the tubing combined with a lumped-element model for the actuator provides estimates of the system resonant frequencies and amplitudes
Premium Power Quality Using Combination of Microturbine Unit and DC Distribution System

This paper discusses a DC distribution system which has been supplied by external AC systems as well as local microturbine distributed generation system in order to demonstrate an overall solution to power quality issue. Based on the dynamic model of the converter, a design procedure has been presented. In this paper, the power flow control in DC distribution system has been achieved by network converters. A suitable control strategy for these converters has been proposed, too. They have DC voltage droop regulator and novel instantaneous power regulation scheme. Also, a novel control system has been proposed for MT converter. Several case studies have been studied and the simulation results show that DC distribution system including microturbine unit can provide the premium power quality using proposed methods.
Noninvasive imaging using an array of electric potential sensors

We present a design for a linear array of eight electric potential sensors arranged with 1 mm spacing and configured to measure spatially varying potential at the microscopic scale. The array successfully detects a 50 µm wide feature associated with one of the samples tested. In a single sensor arrangement we have demonstrated <1 µm resolution, but the data acquisition times can become prohibitive. The sensors operate noninvasively by capacitively coupling to the sample. The issues associated with using an array of sensors in close proximity are addressed. Cross coupling and strategies for matching the response of the sensors are described in detail. Results are presented for a range of samples including a resistive potential divider, a ceramic microwave circuit board, and a section taken from an oil drill pipe containing a known fault. The data acquisition times are compared with those of a single sensor system, with improvements of 4.5 times in speed reported. In one case real-time simultaneous data acquisition is demonstrated using all eight sensors. Since these sensors operate via the displacement current they may also be applied to the characterization of material properties, including, for example, insulators, dielectrics, and poorly conducting composite materials. It is concluded that we see significant improvements in the data acquisition times for the linear array over a single sensor as expected and are able to overcome the difficulties associated with operating an array of sensors in close proximity.
Indicator Approach for Assessing Climate Change Vulnerability in Transportation Infrastructure

From installing culverts with larger safety margins to instituting more frequent training for weather emergencies, transportation agencies around the world are adapting to extreme weather and climate change. An understanding of when and how to adapt (i.e., improve infrastructure preparedness) requires evaluating existing and future vulnerabilities to climate change and prioritizing adaptation efforts. A successful vulnerability assessment lays the groundwork for adaptation by building stakeholder relationships, spurring data collection, and prioritizing needs. One barrier faced by transportation agencies in conducting vulnerability assessments is a lack of financial and staff resources. The process of collecting climate and asset data can be particularly onerous for agencies struggling to meet daily operational needs. Two recent projects piloted a cost-effective screening method for highly vulnerable assets that used indicators developed from data already being collected by many state departments of transportation and metropolitan planning organizations. The indicator that libraries developed during the course of these two studies is described. The results of the data-driven vulnerability screen provide transportation managers with a low-cost starting point toward understanding their system's vulnerabilities. Future research should focus on testing the indicators to identify and eliminate areas of overlap and on evaluating the prediction accuracy for exposure, sensitivity, and adaptive capacity.
Un marco de trabajo basado en tecnología blockchain para mejorar la trazabilidad y la confianza en el intercambio de información entre Instituciones de Educación Superior

Blockchain (BC) es una forma de tecnología de contabilidad distribuida (DLT) que ha ganado una atención y adopción destacadas en los últimos años. BC reduce los riesgos a los que son propensos los sistemas centralizados, a través de la descentralización de datos. Sin embargo, existe el gran reto de introducir esta tecnología a la sociedad. El artículo presenta un marco de trabajo desarrollado para aplicación de tecnología BC en el ámbito de la educación. El marco está compuesto por un conjunto de pasos como referencia para elaborar aplicaciones descentralizadas (DApps), además, presenta la elección de herramientas utilizadas en diferentes propuestas de este ámbito. Por último, se desarrolla una arquitectura robusta que puede ser implementada en diferentes DApps. El marco se valida en el caso de certificación académica y la gestión de propiedad intelectual, que incluye beneficiados y un análisis del aporte de esta tecnología en cada ámbito. El marco permite entender de manera precisa el funcionamiento de la tecnología BC y su aporte en la educación, ayuda a realizar un seguimiento y asegura la inmutabilidad de cada elemento académico individual de una manera escalable, ayuda a reducir los niveles de riesgo, elimina varios fraudes y malas prácticas, potencia la transparencia, y también ayuda a aumentar las medidas de seguridad.
ORIGINAL EFFECT OF LIGHT OVERLOADS ON COUNTERMOVEMENT VERTICAL JUMP PERFORMANCE EFECTO DE SOBRECARGAS LIGERAS SOBRE EL RENDIMIENTO DEL SALTO VERTICAL CON CONTRAMOVIMIENTO

The purpose of this study was to determine the effect of different light overloads on the vertical impulse, velocity of center of mass and peak power during performing two consecutive maximum vertical jumps. 28 athletes practicing different sports where vertical jump is a basic skill have participated. Force platform, operating at 500 Hz, temporally synchronized to a video camera, which recorded at 210 Hz the sagittal plane of the jumps were used. The results have shown that, when overloads of 7,5% of body weight are used , the time used for the counter- phase increases. The vertical impulse and peak power do not vary with the use of different levels of light overloads used in this study, however , the take-off velocity the CM is reduced with a similar percentage increase in overload.
Performance Of Schottky Barrier IRCCD'S In Selected Spectral Bands

Results are presented on the performance of Schottky-barrier focal plane arrays operating in selected spectral bands. The devices measured were monolithic PtSi Schottky diode arrays, 64 X 128 elements, with buried channel CCD readout. The arrays were fab-ricated by RCA Laboratories, Princeton, New Jersey, under a contract from RADC/ESE for the development of high density focal planes. The spectral bands of interest were chosen in an attempt to determine the optimum filtering (spectral) for operation in day/night conditions with minimum interference from sun light or high clutter environments. The measurements were performed in both working thermal imaging camera systems and in laboratory dewars modified to accomodate filters for the desired spectral bands. Data are presented on the transfer characteristics and in-band thermal responses as well as the quantum yield of the devices. Conclusions about operation in the spectral bands chosen and comparison with broad band data are discussed. Examples of the high quality imagery obtainable with these devices are shown.
Naegleria fowleri: An emerging drinking water pathogen

Naegleria fowleri (N. fowleri) is a free‐living, trophic amoeba that is nearly ubiquitous in the environment and can be present in high numbers in warm waters. It is the causative agent of primary amoebic meningoencephalitis (PAM), a rare but particularly lethal disease with a very low survival incidence. Although N. fowleri was isolated from drinking water supplies in Australia in the 1980s, it was not considered a drinking water threat in the United States until recent cases were associated with a groundwater system in Arizona and surface water systems in Louisiana. N. fowleri in drinking water treatment and distribution systems can be managed using disinfectant concentrations typically encountered in well‐run plants although nitrification and attendant low disinfectant residuals may pose a challenge for some systems. The greatest challenge for N. fowleri control is in premise plumbing systems where conditions are largely outside the control of utilities, residuals might be low or nonexistent, and where water temperatures could be high enough to support rapid growth of the amoebae. This article reviews published studies describing the environmental occurrence, survival, pathogenicity, and disinfection of N. fowleri. In addition, this article provides information about this little known and poorly understood parasite with respect to its occurrence in the environment; how the amoeba amplifies in water systems such that it can cause infection; how N. fowleri has been successfully controlled for decades in water systems through treatment and distribution system management in Australia; and the knowledge gaps and information needed to address N. fowleri as an emerging pathogen in US water supplies.
Combining Ability Analysis Using Diallel Crosses among Nine Inbred Lines of Corn under Two Nitrogen Levels

A half diallel cross between 9 inbred lines of maize was evaluated at two different nitrogen levels(60 and 120 kgN/fed.) for nine quantitative characters. Nitrogen level and crosses mean squares were significant for all traits under study. Significant crosses x nitrogen level mean squares were obtained for all studied traits except, No. of rows/ear. General and specific combing ability mean squares were significant for all traits, except days to 50% tasseling date. For days to tasseling and no of rows/ ear at low nitrogen rate; silking at high nitrogen level; shelling% at high nitrogen level and combined analysis and plant height, ear height, no of kernels/ row, 100 kernel weight and grain yield/ plant in both and across nitrogen levels. High ratios which largely exceeded the unity were obtained, indicating that a large part of the total genetic variability associated with these traits was a result of additive and additive by additive gene action. For remain cases, GCA/SCA ratios were less than unity. Therefore, it could be concluded that the large portion of the total genetic variability for these traits was due to non-additive gene action. The parental inbred lines No. 1, 6 and 7 gave positive and significant ( i g ˆ ) effects for grain yield/ plant and one or more of its components. The parental combination P 1 xP 3 , P 1 xP 4 , P 1 xP 5 , P 2 xP 4 , P 2 xP 7 , P 2 xP 9, P 3 xP 4, P 3 xP 5 , P 3 xP 6 , , P 4 xP 6, P 5 xP 6 , P 6 xP 7 , P 6 xP 9, P 7 xP 8 and P 7 xP 9 for grain yield/plant exhibited significant positive ij S ^ effects being 62.61, 20.37, 92.43, 42.37, 42.06, 17.94, 12.38, 10.57, 21.08, 53.52, 7.27, 14.95, 13.53, 42.00 and 49.83, respectively. The crosses 1x3, 2x7, 7x8, 7x9, 8x9 in low nitrogen environment, 1x3, 1x4, 1x5, 1x7, 2x4, 2x7, 6x7, 7x8, 7x9 and 8x9 at low nitrogen environment and 1x3, 1x5, 2x4, 2x7, 6x7, 7x8, 7x9 and 8x9 in the combined data gave the highest mean value of grain yield / plant.
Automatic Generation of 3D Building Models from Complicated Building Polygons

AbstractA three-dimensional (3D) urban model is an important information infrastructure that can be utilized in several fields, such as urban planning and game industries. However, enormous time and effort have to be spent to create 3D urban models using 3D modeling software. This paper employs automatic generation of 3D building models through integrating geographic information systems (GIS) and computer graphics. An integrated system is proposed for automatically creating 3D building models from building polygons (building footprints) on a digital map. Because most building polygons’ edges meet at a right angle (orthogonal polygon), the integrated system partitions orthogonal building polygons into a set of rectangles and places rectangular roofs and box-shaped building bodies on these rectangles. In this research, a new scheme for partitioning complicated orthogonal building polygons is proposed. In the digital map, however, not all building polygons are orthogonal. To place parts of a building properl.
A System Dynamic Model for the Environmental Performance Index of Malaysia

The Third Principle which is pertaining to the right to development in Agenda 21 of the Rio Declaration or Earth Summit asserts that it must be fulfilled so that development must be sustainable which has been defined as development that meets the needs of the present without compromising the ability of future generations to meet their own need. Among the various models of environmental sustainability comparative studies was the Environmental Performance Index (EPI) model. Malaysia was ranked 54 recording a score of 65 and ranked 10 among the Asia and Pacific Countries behind two ASEAN countries: Singapore and Philippines. The environmental indicators from 2010 EPI was therefore used to develop the System Dynamics Simulation Model to provide the framework and procedure for qualitative and quantitative description, exploration and analysis of the systems in terms of their processes, information boundaries and strategies, facilitating quantitative simulation modeling for policy evaluation and predictions pertinent to sustainability. The System Dynamic Simulation Model developed for the EPI of Malaysia changed the static presentation to a dynamic scenario. Two very important components were considered: the contribution and the impact of population and the industrial activities indicated as the Industrial Productivity Index. The simulated EPI of 66.51 was shown to differ slightly from the EPI 2010 of 65 attributed to the inclusion of the population and the industrial production factors in the system dynamic model, in which the later study did not compute the EPI with respect to the two factors. Thus, the System Dynamic Simulation Model developed has shown to be reliable and be used for any country to simulate EPI for future trends.