Miracle-dz/UniFAR-FTUs huggingface dataset:
Determinação de regiões homólogas para registro de uma série multitemporal de imagens de satélite usando algoritmos genéticos

O presente trabalho faz parte do programa GEOSAFRAS, estimativa e safras no Brasil, coordenado pela Companhia Nacional de Abastecimento e do Programa das Nacoes Unidas para o Desenvolvimento. Uma aplicacao muito comum no gerenciamento de safras e o monitoramento de mudancas nos campos de cultivo usando imagens de satelite adquiridas em diferentes datas. Para isto, a compatibilidade espacial entre essas imagens e um requisito basico, mais ainda quando se trata de imagens de diferentes sensores. Nesse artigo e descrita uma metodologia para a semi-automacao do processo de correcao geometrica com a finalidade de facilitar o ajuste geometrico entre imagens de diferentes sensores. Inicialmente, uma imagem base e manualmente corrigida a partir de dados extraidos de uma carta topografica digital. Apos essa correcao, a imagem corrigida e utilizada como elemento base de referencia para corrigir as outras imagens (denominadas neste trabalho de imagens de ajuste), as quais sao adquiridas em datas diferentes e/ou de diferentes sensores. Depois de corrigida a imagem base todas as imagens (base e de ajuste) sao segmentadas e classificadas. Os segmentos classificados como vegetacao florestal sao escolhidos para compor a malha relacional. As imagens de ajuste sao registradas pelo processo imagem-imagem usando os centroides dos segmentos de vegetacao florestal. Os segmentos de vegetacao florestal presentes na imagem base sao confrontados com os segmentos correspondentes nas imagens de ajuste, para buscar correspondencias (matching). O processo de matching e realizado atraves da aplicacao de algoritmos geneticos. Ao obter um resultado satisfatorio na busca de correspondencia, calcula-se os centroides correspondentes aos segmentos detectados, os quais sao utilizados como pontos de controle para o processo de registro das imagens. Os resultados mostram que os algoritmos geneticos encontraram a solucao otima na maior parte dos experimentos realizados. Porem, para a imagem LANDSAT 2002 reamostrada a solucao encontrada foi sub- otima, pois um segmento sofreu grandes variacoes em relacao ao mesmo segmento na imagem base.
New optimal approach to Global Positioning System/Differential Global Positioning System integrity monitoring

The problems of global positioning system (GPS) and differential GPS (DGPS) integrity monitoring are addressed. Receiver autonomous and station-based integrity monitoring algorithms are discussed. Integrity monitoring consists of two functions: detection of the fact that a satellite channel produced wrong data and isolation or identification of which satellite channel is malfunctioning. So-called snapshot and fixed size sample approaches to GPS channels integrity monitoring are widely known today. Unfortunately, the snapshot and fixed size sample approaches do not lead to an optimal solution. The goal is to develop a new optimal statistical approach to GPS/DGPS channels integrity monitoring, which has significant advantages over widely known but nonoptimal snapshot and fixed size sample algorithms.
On the distortion of the static structure factor of colloidal fluids in shear flow

It is shown that the shear-induced distortion of the static structure factor (or equivalently, the pair distribution function) of colloidal fluids is a non-analytic function of the shear rate. The Smoluchowski equation shows boundary-layer behaviour at zero wave vector (large separations). The width of this boundary layer is proportional to the square-root of the shear rate. An explicit perturbation analysis of the two-particle Smoluchowski equation without hydrodynamic interactions is given. The onset of the non-Newtonian behaviour of the effective vicosity is due to the boundary-layer behaviour of the structure factor.
Migration of Garganey Anas querquedula and Teal Anas crecca in north-eastern Slovenia

Migration patterns and occurrence of Teal Anas crecca and Garganey Anas querquedula were studied in the fishpond complex Racki ribniki (35 ha) in northeastern Slovenia between 1985 and 1996. Peak numbers of Teal in spring occurred in February and in autumn during November. Spring peak numbers of Garganey occurred in April, whereas in autumn the migration was less pronounced. During the spring migration the differences in numbers between months were highly significant. In spring, males were significantly more common than females. Comparisons with other localities in Slovenia showed that the Racki ribniki ponds are important sites for both species during migration.
Fault‐tolerant control design using the linear parameter varying approach

In this paper, a fault‐tolerant control (FTC) design method based on linear parameter varying (LPV) gain‐scheduling theory is proposed. The main contribution is the design of a fault‐tolerant state‐feedback observer‐based controller based on a polytopic LPV representation where faults are considered in the same way that those parameters that vary with the operating point. Within this framework, the ranges of fault magnitudes that are wanted to be tolerated can be specified as design parameters. Control specifications are defined in terms of H ∞ or H2 performance in combination with regional pole placement, as traditionally carried out in conventional LPV control. Passive and active FTC formulations are developed, the latter assuming the availability of online fault estimations. In both cases, the associated controller synthesis methods are based on the well‐established LPV‐LMI framework. Additionally, a fault estimation procedure is provided to allow the implementation of the active formulation. Finally, the use of the proposed method is illustrated by applying it to the FTC of a two‐degree‐of‐freedom helicopter. Copyright © 2014 John Wiley & Sons, Ltd.
Mechanism of photoluminescence of Si nanocrystals fabricated in a SiO2 matrix

The luminescence properties of silicon nanocrystals fabricated by Si ion implantation into a SiO2 matrix and subsequent thermal annealing have been studied. To identify the mechanism of photoluminescence of Si nanocrystals, the dependencies of the steady-state photoluminescence on temperature and excitation power density, and the time-resolved photoluminescence have been investigated. The experimental results point to the mechanism of recombination via the levels of centers which are presumably localized at the silicon nanocrystal–silicon dioxide boundary.
Conformational Regulation of Dielectric Poly(Vinylidene Fluoride)‐Based Solid‐State Electrolytes for Efficient Lithium Salt Dissociation and Lithium‐Ion Transportation

Restricted by the poor ability of polymers to dissociate lithium salts and transport ions, solid‐state polymer electrolytes (SPEs) show extremely low ionic conductivities (≈10−7–10−5 S cm−1) and transference number of lithium ions (tLi+ ≈0.2–0.4) at 25 °C. Here, a novel polymer matrix of SPEs that simultaneously promotes lithium salt dissociation and ion transportation based on a high dielectric poly(vinylidene fluoride‐trifluoroethylene‐chlorotrifluoroethylene) (TerP) and an all‐trans conformational poly(vinylidene fluoride‐trifluoroethylene) (CoP), is developed. The high dielectric constant increases the polarity of CH2CF2 polar groups; then, brings a strong electronegative end that dissociates Li+ from lithium salts. The all‐trans conformation assures all fluorine atoms locate on one side of the chain, constructing ion hopping highways. As a result, the TerP/CoP (TC) SPE exhibits a high ionic conductivity (2.37 × 10−4 S cm−1) and a quite large tLi+ of 0.61 at 25 °C. The Li/TC SPE/Li symmetric cells cycle stably for more than half a year (>4500 h) and the LiNi0.8Co0. 1Mn0.1O2/TC SPE/Li cell cycles steadily for 1000 and 600 cycles at 1 C and 2 C at 25 °C, respectively. This work paves a new way to prepare high‐performance SPEs by simultaneously modulating dielectric constants and conformation of polymers.
Detection and Reporting of Wireless Channel Congestion and Interference in Connected Vehicle Networks

Connected vehicle (CV) wireless networks based on dedicated short-range communications (DSRC), European Telecommunications Standards Institute (ETSI) intelligent transportation systems (ITS-G5), and C-V2X technologies are susceptible to interference from both unintentional emitters and non-CV devices that may be authorized to share the same or adjacent bands. Such interference may lead to unreliable communication and disruption of CV services with a particular impact on safety-related applications. Surprisingly, considering the safety-critical nature of CV applications, there is no simple mechanism for detecting congestion or interference in such networks over wide areas. To address this gap, we propose and demonstrate that both interference and congestion in DSRC and ETSI ITS-G5 networks can be detected simply and inexpensively using capabilities that are already incorporated into the IEEE 802.11p standard, specifically the flags and statistics generated mostly in the physical layer (physical layer convergence procedure and physical medium dependent) state machines. Such a capability could be realized through a relatively minor software upgrade but would resolve a longstanding but underappreciated concern that CV networks are vulnerable to both congestion and a variety of short-range interferers but lack the capability to detect or report this. Although our focus was on DSRC and ITS-G5, similar considerations apply to related schemes such as C-V2X.
PERSEPSI KARYAWAN TENTANG CORPORATE SOCIAL RESPONSIBILITY (CSR)

Corporate Social Responsibility (CSR) merupakan program tanggung jawab sosial perusahaan yang memberikan kepedulian sosial perusahaan dalam upaya pemberdayaan masyarakat. Sudah banyak studi terkait dampak CSR terhadap naiknya citra positif perusahaan di masyarakat maupun dampak positifnya bagi kemajuan sosial masyarakat dan lingkungan hidup. Namun jarang perhatian yang diberikan untuk melihat dampak CSR bagi lingkungan intern perusahaan, khususnya karyawan. Padahal CSR juga mengambil peran yang tidak kecil dalam pengelolaan sumber daya manusia di perusahaan melalui rasa memiliki yang tinggi yang diakibatkan oleh rasa bangga terhadap kontribusi perusahaan bagi kemajuan masyarakat. Tujuan penelitian ini untuk mengelaborasi persepsi karyawan terhadap program CSR perusahaan dan kaitannya dengan identifikasi mereka terhadap perusahaan. Jumlah partisipan adalah 19 orang karyawan dari perusahaan yang bekerja di Kalla Group. Kuesioner dan wawancara digunakan sebagai teknik pengumpulan data.Hasil penelitian menunjukkan bahwa adanya rasa bangga terhadap kontribusi positif perusahaan bagi masyarakat luas dan menjadi nilai positif karena menjadi bagian dari perusahaan yang dapat dibanggakan. Berdasarkan hasil penelitian tersebut program CSR menurut persepsi karyawan dianggap penting dan bermanfaat sehingga kedepan program-program semacam itu harus terkonsep dengan baik dan berkesinambungan sehingga akan meningkatkan citra positif perusahaan dimata masyarakat.
Bryophyllum pinnatum Inhibits Angiotensin Converting Enzyme and Arginase Activities in Sodium Flouride Induced Hypertensive Rats

ABSTRACT Background: This study investigated the Bryophyllum pinnatum live plant fractions’ effects on the activities of angiotensin-converting-enzyme (ACE), arginase, blood pressure, and biochemical parameters in sodium fluoride (NaF)-induced hypertensive rats. The results revealed that diastolic blood pressure (DBP), systolic blood pressure (SBP), mean arterial pressure (MAP), heart rate (HR), and arginase activity were reduced with increased nitric oxide level compared to hypertensive rats. The aqueous fraction (AQF), n-hexane fraction (NHF), and ethyl acetate fraction (EAF) boosted superoxide dismutase (SOD), catalase (CAT), and reduced glutathione (GSH) levels with reduction in malondialdehyde (MDA) of hypertensive-treated rats. NHF portends the capability to inhibit ACE and arginase activities and enhanced the antioxidant biomarkers.
The Influence of Demographic Factors on Word Usage in Texts Written About Artworks

Research on text analysis has demonstrated that texts can reveal various characteristics of individuals, such as personality, preferences, or future behavior. However, despite its numerous applications in other fields, text analysis has received very little attention in the field of empirical aesthetics. This study aimed to analyze texts written about artworks and examine the relationship between certain demographic factors and the use of words, using a novel framework for computer-based text analysis based on neural embedding. Participants provided textual descriptions of paintings from various genres and eras, along with demographic information such as gender, age, income, frequency of museum visits, and knowledge of artworks. The results revealed a significant relationship between some demographic factors and word usage, while also highlighting the usefulness of the proposed framework.
The NULLTIMATE test bench: achromatic phase shifters for nulling interferometry

The NULLTIMATE project developed and realized three concepts of achromatic phase shifters for nulling interferometry. One of the concepts is based on dispersive plates made of three materials which where fully characterized regarding their refractive index and thermo-optic behavior between 100K and 330 K. The other two concepts are based on mirror optics, one of which uses the phase shift of π when crossing a focus, the other the reversal of electric fields at reflection. An optical bench has been set up to test and characterize these phase shifters at wavelengths 2 − 2.4 μm with the option of changing to the 10 μm domain. We summarize the development of the achromatic phase shifters and report on the current status of the test bench.
Hotel organizational culture and employee personality type: Relationship with person-organization fit

Abstract Researchers have implied that organizational success was contingent on the compatibility between employees and organizations in the past two decades, known as person-organization (PO) fit. This research study aimed to assess relationships between hotel organizational culture, employee personality types, and PO fit. Using a sample of 231 hourly and salaried employees from 14 upper upscale hotels, results revealed relationships between hotel organizational cultures and a particular personality type of hotel employees. The article offers practical and theoretical implications for assessing employee personality types and PO fit in light of the findings.
Kharitonov-like rectangle for the sectorial area stability

The physical parameters of control systems are uncertain and are accompanied by nonlinearity. The state space equation and the characteristic polynomial of the control system should, therefore, be expressed by an interval set of parameters. This paper examines the robust stability of that type of control system based on the characteristic roots which exist in a sectorial area on the left half s-plane. A sufficient condition for the robust stability is given by applying a division algorithm (Sturm's theorem) to the four corner polynomials, that is, a Kharitonov-like rectangle which covers all extreme points of the polytopic polynomial.
Predicate Data Availability in the Ventilator 510(K) Network

Past research has substantiated concerns over transparency in medical device clearance and approval by the Food and Drug Administration (FDA), including a lack of publicly available data. Transparency in this process is necessary for patients and researchers to understand why products are granted or denied clearance for public use, allowing them to make informed decisions ranging from the innovation of future products to personal healthcare judgements. This insight is important for the premarket notification process known as the “510(k) pathway,” the regulatory process through which most medical devices are cleared for commercial distribution in the United States. This process relies on demonstrations that a new product is substantially equivalent to an existing product on the market, referred to as a predicate device. One metric of transparency of the 510(k) pathway is the public availability of 510(k) submission summaries and the data they contain on substantially equivalent predicate devices. We analyze predicate data availability for medical ventilation devices cleared through the 510(k) pathway across a range of time intervals and product codes using one-way analysis of variance testing and Tukey’s method of multiple comparison. Out of all cleared medical ventilation devices whose submissions were received from January 1990 through October 2020, 65.64% list publicly available predicate information, primarily through summary documents in the FDA 510(k) Premarket Notification database. There is a statistically significant increase in the percentage of device submissions with available predicate data over time, with predicate data available for 93.17% of all devices submitted in the fifteen-year-period between the beginning of 2005 and the end of 2019.
Plasma Vitellogenin and Testosterone in Diamond-backed Terrapins (Malaclemys terrapin) during the Nesting Season in Coastal New Jersey

Vitellogenesis is the process in which female oviparous vertebrates synthesize the protein vitellogenin to develop egg yolk. In some species, vitellogenin has been used to investigate reproductive status, as a biomarker of clutch size and nesting frequency, and as a biomarker of exposure to endocrine-disruptive chemicals. The Diamond-backed Terrapin (Malaclemys terrapin) is an obligate coastal species that in the northern extent of its range nests in the spring and summer months. Diamond-backed Terrapins serve as a key indicator species of coastal ecosystem health; thus, furthering our understanding of the endocrine control of reproduction may inform biologists of the health and status of coastal ecosystems. The objective of this study was to quantify baseline values of vitellogenin and testosterone in Diamond-backed Terrapins during the nesting season, in the northern part of their range. Blood samples were taken from adult female terrapins from two populations in coastal New Jersey from June–August. Enzyme-linked immunosorbent assays (ELISAs) were used to quantify vitellogenin (VTG) and testosterone (T) across the nesting season. VTG concentrations showed peak values in the earliest part of the nesting season, significantly declining through the summer before reaching basal values in August, with T showing a similar trend. This suggests that terrapins in New Jersey follow a similar reproductive cycle to other turtle species from temperate latitudes. Additionally, we found that larger females exhibited higher concentration of T and VTG than smaller females. This suggests that VTG and T are useful biomarkers of reproductive output in these animals. Lastly, we also noted that larger females tended to nest earlier in the nesting season than smaller females. We hypothesize that larger females may compete for resources more effectively and efficiently than smaller females, which may confer larger individuals a fitness advantage.
Saddle-shaped solutions of bistable diffusion equations in all of ℝ2m

We study the existence and instability properties of saddle-shaped solutions of the semilinear elliptic equation ���1u D f . u/ in the whole R2m, where f is of bistable type. It is known that in dimension 2m D 2 there exists a saddle-shaped solution. This is a solution which changes sign in R2 and vanishes only on fjx1j D jx2jg. It is also known that this solution is unstable. In this article we prove the existence of saddle-shaped solutions in every even dimension, as well as their instability in the case of dimension 2m D 4. More precisely, our main result establishes that if 2m D 4, every solution vanishing on the Simons cone f.x1; x2/ 2 Rm Rm : jx1j D jx2jg is unstable outside every compact set and, as a consequence, has infinite Morse index. These results are relevant in connection with a conjecture of De Giorgi extensively studied in recent years and for which the existence of a counter-example in high dimensions is still an open problem.
A NON-GEOMETRIC BROWNIAN MOTION MODEL ESTIMATED BY MARKOV CHAIN APPROXIMATION

The pricing of most contingent claims is continuously monitored the movement of the underlying assets that follow geometric Brownian motion. However, for exotic options, the pricing of the underlying assets is difficult to be obtained analytically. In reality, numerical methods are employed to monitor discretized path-dependent options since complexity of exotic options increases the difficulty of obtaining the closed-form solutions. In this dissertation, we propose a Markov chain method to discretely monitor the underlying asset pricing of a European knock-out call option with time-varying barriers. Markov chain method provides some advantages in computation since the discretized time step can be partitioned to match with the number of the underlying non-dividend paying asset prices. Compared to Monte Carlo simulation, Markov chain method can not only efficiently handle the case where the initial asset price is close to a barrier level but also effectively improve the accuracy of obtaining the price of a barrier option. We study a European knock-out call option with either constant or time-varying barriers. Under risk-neural measure, the movement of the underlying stock price is said to follow a non-geometric Brownian motion. Furthermore, we are interested to estimate the parameter p value that generates optimal payoff of a knock-out option with time-varying barriers. However, implied volatility is an essential factor that affects the movement of the underlying asset price and determines whether the barrier option is knocked out or not during the lifetime of the option.
Coarticulation in VCV Utterances: Spectrographic Measurements

In this paper, the formant transitions in vowel + stop consonant + vowel utterances spoken by Swedish, American, and Russian talkers are studied spectrographically. The data suggest a physiological model in terms of which the VCV articulations are represented by a basic diphthongal gesture with an independent stop‐consonant gesture superimposed on its transitional portion. This interpretation necessitates reevaluation of the locus theory proposed by the workers of the Haskins Laboratories. Some conclusions about the general nature of the neural instructions behind the VCV gestures are discussed.
Bending-stress-driven phase transitions in pentacene thin films for flexible organic field-effect transistors

The effects of bending strain on the structure and electrical characteristics of pentacene films in flexible devices were investigated. It was found that the volume fraction of bulk phase in the pentacene film increases from 10.7% to 27.7% under 1.1% of tensile strain but decreases to 3.5% under 1.0% of compressive strain. These bending-stress-driven phase transitions between the bulk phase and the thin-film phase in the pentacene film resulted in the changes in field-effect mobility, and were driven by the differences between the in-plane dimensions of the crystal unit cells of the two phases to reduce the external bending stress.
A consistency theory of singular perturbations of differential equations

Many physical systems are described by singularly perturbed differential equations. It is known that good approximations of the solutions can be obtained by neglecting the perturbations [14]. This procedure can be justified using the results of A. N. Tihonov ([15] to [17]) and subsequent generalizations ([1] to [4], [7], [8] and [10], [11]). In this paper we introduce concepts of consistency. These are extensions of total stability and were set up in order to give a formal description of the fact that the perturbations can be neglected. These concepts have been investigated using auxiliary functions of Lyapunov type. We obtain theorems that generalize several known results [1], [7], [11], [17], and are expected to handle many practical situations.