Miracle-dz/UniFAR-FTUs huggingface dataset:
Image Registration With Fourier-Based Image Correlation: A Comprehensive Review of Developments and Applications

Fourier-based image correlation is a powerful area-based image registration technique, which involves aligning images based on a translation model or similarity model by means of the image information and operation in the frequency domain. In recent years, Fourier-based image correlation has made significant progress and attracted extensive research interest in a variety of applications, especially in the field of photogrammetry and remote sensing, leading to the development of a number of subpixel methods that have improved the accuracy and robustness. However, to date, a detailed review of the literature related to Fourier-based image correlation is still lacking. In this review, we aim at providing a comprehensive overview of the fundamentals, developments, and applications of image registration with Fourier-based image correlation methods. Specifically, this review introduces the principal laws underlying these methods, presents a survey of the existing subpixel methods calculated both in the spatial domain and in the frequency domain, summarizes the major applications from three aspects, and discusses the challenges and possible directions of future research. This review is expected to be beneficial for researchers working in the relevant fields to obtain an insight into the current state of the art, to develop new variants, to explore potential applications, and to suggest promising future trends of image registration with Fourier-based image correlation.
A Minimum-Skew Clock Tree Synthesis Algorithm for Single Flux Quantum Logic Circuits

This article presents a synchronous minimum-skew clock tree synthesis algorithm for single flux quantum circuits considering splitter delays and placement blockages. The proposed methodology improves the state-of-the-art by accounting for splitter delays and creating a fully balanced clock tree structure in which the number of clock splitters from the clock source to all the sink nodes is identical. Additionally, a mixed integer linear programming based algorithm is presented that removes the overlaps among the clock splitters and placed cells (i.e., placement blockages) and minimizes the clock skew, simultaneously. Using the proposed method, the average clock skew for 17 benchmark circuits is 4.6 ps, improving the state-of-the-art algorithm by <inline-formula><tex-math notation="LaTeX">$\text{70}{\%}$</tex-math></inline-formula>. Finally, a clock tree synthesis algorithm for imbalanced topologies is presented that reduces the clock skew and the number of clock splitters in the clock network by <inline-formula><tex-math notation="LaTeX">$\text{56}{\%}$</tex-math></inline-formula> and <inline-formula><tex-math notation="LaTeX">$\text{37}{\%}$</tex-math></inline-formula>, respectively, compared with a fully balanced clock tree solution.
Design, optimization and realization of compact bandpass filter using two identical square open-loop resonators for wireless communications systems

In wireless communications systems, the microstrip filter has an important job in terms of selectivity and elimination of the undesired signals. Microstrip filters are always preferred over the lumped filters at a larger frequency for their compact size, lighter weight, lower cost, and higher performance. In this paper, the design, optimization, and realization of a compact narrow-band bandpass filter using two identical square open-loop resonators is presented for a frequency of 2.4 GHz.This filter is printed on a RO6010 substrate with a dielectric constant of 10.2, a thickness of 1.27 mm and a tangent loss of 0.0023. The proposed filter is intended for wireless communications systems such as (RFID, Wi-Fi, Bluetooth, and WLAN) and medical applications systems that operate at the resonance frequency of 2.4 GHz. This bandpass filter has very high selectivity in the bandwidth of 290 MHz, the small size of (9.4 × 23.1) mm2, and small insertion loss of -0.23 dB. The proposed filter structure is easy to fabricate and the achieved results are very encouraging.
ANALISIS FAKTOR-FAKTOR YANG MENINGKATKAN DAYA SAING PRODUK UKM MAKANAN RINGAN DI KUNINGAN

AbstractSMEs products in Kuningan district �very diversed and dominated by the snack food products. This study was conducted to analyze the factors that shape the competitiveness of SMEs snacks in Kuningan. The research sample of 103 respondents of food entrepreneurs. �Using multiple regression analysis. The results of the study explained that the factor of innovation and human resources has a positive influence on the competitiveness of products, while the technology and product excellence has no effect on the competitiveness of SMEs snacks in Kuningan . Keywords: Competitiveness, Innovation,� Human Resources, Product Excellence�AbstrakProduk UKM di Kabupaten Kuningan sangat beragam dan didominasi oleh produk makanan ringan. Penelitian ini dilakukan untuk menganalisis faktor-faktor yang membentuk daya saing produk UKM makanan ringan di Kuningan. Sampel penelitian ini sebanyak 103 responden para pelaku usaha makanan ringan. Analisis menggunakan regresi berganda. Hasil penelitian menjelaskan bahwa faktor inovasi dan sumber daya manusia memiliki pengaruh positif terhadap daya saing produk, sedangkan teknologi dan keunggulan produk tidak berpengaruh pada daya saing produk UKM makanan ringan di Kecamatan Kuningan.Kata Kunci : Daya saing,�� Inovasi,� Sumber Daya Manusia,� Keunggulan Produk
Pareto frontier analysis of spatio-temporal total-variation based four-dimensional cone-beam CT

Compressed sensing (CS) based four dimensional (4D) cone-beam (CB) computed tomography (CT) reconstruction intrinsically is a multi-objective optimization problem. In practice, however, often a heuristically chosen single objective cost function is minimized. In this paper Pareto-frontier analysis was utilized to explore the image quality of the multi-objective solution space. The 4D-CBCT CS reconstruction was solved as an unconstrained optimization problem with the objective function consisting of data fidelity, spatial sparsity term (with regularization parameter λ) and temporal sparsity term (with regularization parameter β). Data fidelity was defined by an l2-norm term and the sparsity was extracted by the total-variation (TV) norm. The Pareto front was explored for a large range of λ and β parameter combinations optimized using Neterov’s descent method. Image quality was evaluated using correlation ratio (CR), mutual information (MI), structural similarity index (SSI), and contrast-to-noise ratio (CNR) on both phantom and clinical data. Higher image quality metrics were obtained with the CS optimized 4D-CBCT compared to Feldkamp (FDK) reconstructed 4D-CBCT. The optimal parameter values, however, were distinctly different for the different image quality metrics, scans and regions-of-interest. For the phantom data, the optimized CBCT have similar numerical results by CR and MI, but the results differ for SSI. For clinical data, it was found that λ ∈ [ 0.53 , 0.78 ] ∪ β ∈ [ 0.32 , 0.73 ] kept the CS CBCT with 15% difference to the CBCT of optimal CNR. The optimal regularization parameter values in CS optimized 4D-CBCT were found to be patient and image quality metric dependent. The regularization should therefore be tailored to specific clinical applications.
Group classification of space-time fractional nonlinear Poisson equation

In this paper, we present a complete symmetry analysis for the space-time fractional nonlinear Poisson Equation. A minimal symmetry algebra for any arbitrary function $f(u)$ is obtained. A group classification is then carried out by investigating for $f(u)$ that give a larger symmetry algebras. Symmetries are obtained and some exact solutions are constructed.
Quarkonium Production Measurements with the ALICE Detector at the LHC

In (ultra-)relativistic heavy-ion collisions, the strongly interactingmatter is predicted to undergo a phase transition into a plasma of deconfinedquarks and gluons (QGP) and quarkonia probe different aspects of this medium.However, the medium modification of quarkonium production includes also the contribution of cold nuclear matter effects (CNM), such as shadowing or nuclear break-up in addition to QGP effects. Proton--nucleus collisions, where no QGP is expected, are used to measure cold nuclear matter effects on quarkonium production. Vacuum production of quarkonia is modelled in proton--proton (pp) collisions, which are used as reference for both heavy-ion and proton--nucleus collisions. Besides serving as reference, results in pp collisions represent a benchmark test of QCD based models in both perturbative and non-perturbative regimes. The ALICE detector has unique capabilities at the LHC for measuring quarkonia down to zero transverse momentum. Measurements are carried out at both central and forward rapidity, in the dielectron and dimuon decay channel, respectively. In this contribution the latest quarkonium measurements for various energies and colliding systems, performed by the ALICE Collaboration during the LHC Run-2 period, will be discussed.
Do You Notice What I Notice? Productive Mediums for Teacher Noticing.

This article is a report on the findings of three case studies that focused on elementary teachers’ inthe-moment noticing across a month of instruction. Extending Jacobs and her colleagues’ framework (Jacobs, Lamb, and Philipp, 2010), this articles categorizes the mediums (i.e., written accounts, verbal interactions, physical strategies) by which the teachers attended to their students’ mathematical reasoning. Even though the teachers taught similar lessons, they attended to students’ actions through different mediums. These mediums reflected and often aligned with individual teaching practices and routines. More interestingly, the teachers’ preferred medium was also the most productive for them in terms of discussing students’ understanding and informing instructional decisions.
Metaheurísticas para as variantes do problema de roteamento de veículos: capacitado, com janela de tempo e com tempo de viagem estocástico

A atribuicao e o planejamento de rotas de veiculos e um problema crucial daadministracao de cadeias de suprimentos. No ambiente real e comum encontrarproblemas que envolvam uma quantidade muito grande de clientes e queconsequentemente fogem do alcance de metodos exatos. Neste contexto, este trabalhovisa desenvolver metaheuristicas capazes de resolver algumas das mais importantesvariantes do problema de roteamento de veiculos (PRV): o PRV capacitado, o PRVcapacitado com maxima distância e o PRV com janelas de tempo. As metaheuristicasdesenvolvidas combinam a forca de estrategias bem sucedidas na literatura como TabuSearch, Guided Local Search e Adaptive Memory Procedure dentro de uma estruturaque utiliza o Iterated Local Search e o Variable Neighborhood Descent.O ambiente real tambem possui dados probabilisticos por natureza,como o tempo de viagem entre dois clientes. Isto faz com que um modelo de roteamentoque considere as incertezas envolvidas nestes dados seja mais apropriado. Nestecontexto, o presente trabalho tambem desenvolve uma metaheuristica para resolver umPRV com janela de tempo no qual o tempo de viagem entre os clientes e conhecidoapenas probabilisticamente. Este problema e conhecido como PRV com Janelas deTempo e Tempo de Viagem Estocastico. Um metodo inedito na literatura edesenvolvido nao so para estimar o tempo de chegada nos clientes, mas tambem paracalcular a probabilidade dos veiculos atenderem os clientes dentro de suas respectivasjanelas de tempo. O algoritmo encontra a rota de menor custo e ao mesmo tempogarante um nivel minimo de servico aos clientes. Simulacao Estocastica e utilizada paramostrar que o metodo proposto supera outros conhecidos metodos da literatura.
Quadratic superalgebras in mathematics and physics

We introduce in this thesis a class of quadratic deformations of Lie superalgebras which we term quadratic superalgebras. These are finitely-generated algebras with a `Z`\(_{_2}\)-graded structure comprising an even and an odd part; the even part is an ordinary Lie algebra, the odd part is a module of the even part, and the anticommutator of two odd elements closes quadratically on the even generators. One motivation to study algebras with these structural properties is their arising in the observable algebra of gauge invariant fields in Hamiltonian lattice QCD [44] and the subsequent study of polynomial gl(n) superalgebras [45]. The present work both broadens the scope and extends the analysis of the latter. For this class of algebras we derive a Poincare-Birkhoff-Witt theorem, including an explicit ordered basis, which we then employ as a means to investigate the structure of irreducible modules; these are analogous to Kac modules for Lie superalgebras. Further rationale to study quadratic superalgebras is due to the remarkable existence of zero-step modules; these are so-called atypical modules for which the entire irreducible module of the quadratic superalgebra consists of a single irreducible module of the even subalgebra. In addition to their mathematical aspects, we investigate in this thesis an application of quadratic superalgebras in the context of space-time conformal supersymmetry. We show that the algebra of N = 1 space-time conformal supersymmetry, su(2; 2=1), arises as a contraction limit of a certain quadratic superalgebra. In this setting we exploit the existence of zero-step modules which, for a fixed parameter choice of the quadratic family under consideration, coincide with the massless positive energy unitary irreducible representations (in the standard classifcation of Mack) of the even subalgebra. For these massless particle multiplets the odd generators vanish identically and supersymmetry is carried (unbroken) without the accompaniment of superpartners. Thus, in the context of extended non-linear symmetry principles and their role in determining the spectrum of fundamental particles, we point out that there exist candidate algebraic structures which implement (extended) supersymmetric invariance while at the same time obviating the need for every particle of the standard model to be accompanied by a superpartner.
Investigation of the forming process under UV illumination in HfO2-based resistance random access memory with a transparent electrode

Traditionally, metal is used for the top electrode (TE) in HfO2-based resistance random access memory. When transparent indium–tin–oxide (ITO) is used as the TE, different forming processes, including lower forming voltages and higher forming currents, are exhibited. This work investigates the forming process with such a transparent TE under UV illumination. In addition, different TE thicknesses and device cell sizes are also investigated to confirm the results. Finally, a possible conduction model is provided to explain the mechanisms under UV-light illumination for the transparent TE during the forming process.
Correlation of Long-term Cosmic-Ray Modulation with Solar Activity Parameters

In this work, we analyze the long-term cosmic-ray modulation observed by the Hermanus neutron monitor, which is the detector with the longest cosmic-ray record, from 1957 July. For our study we use the force-field approximation to the cosmic-ray transport equation, and the newest results on the mean free paths from the scattering theory. We compare the modulation parameter (ϕ) with different rigidity (P) dependences: P, P2, and P2/3. We correlate them with solar and interplanetary parameters. We found that (1) these rigidity dependences properly describe the modulation, (2) long-term cosmic-ray variations are better correlated with the magnitude of the heliospheric magnetic field (HMF) than the sunspot number, solar wind speed, and tilt angle of the HMF, and (3) the theoretical dependence of the parallel mean free path on the magnetic field variance is in agreement with the modulation parameter and therefore with the neutron monitor record. We also found that the force-field approximation is not able to take into account the effects of three-dimensional particle transport, showing a poor correlation with the perpendicular mean free path.
Study of charmonium production using decays to hadronic final states with the LHCb experiment

Les etudes des proprietes et du mecanisme de la production du charmonium ont debute avec la decouverte du meson J/ψ. Depuis plus de 40 ans, le mecanisme de production de charmonium n'est toujours pas clair. Les etats de charmonium sont copieusement produits dans les collisionneurs hadroniques, ce qui permet d'etudier systematiquement leurs parametres de resonance, leur production et leurs desintegrations. En depit des taux de production eleves, de nombreux etats de charmonium sont peu etudies suite aux difficultes de leur reconstruction avec le bruit de fond important. L’experience LHCb offre une opportunite unique d’etudier les etats S et P de charmonium en utilisant leurs desintegrations vers des hadrons, et en particulier la production des etats ηc et χc. Selon le formalisme de la QCD non relativiste (NRQCD), les elements de matrice decrivant l’hadronisation des etats S (ou P) du charmonium sont lies. Par consequent, les mesures LHCb fournissent les nouveaux tests rigoureux de NRQCD. Dans le cadre de la these, la premiere mesure de la section efficace de production de l’etat ηc(1S) a √s=13 TeV et la mesure la plus precise de la masse sont effectues, avec la desintegration de l'etat ηc(1S) vers proton et antiproton. De plus, la production des etats χc et ηc(2S) dans les desintegrations des hadrons b est etudiee en utilisant leurs desintegrations vers φφ. Les resultats obtenus sont confrontes aux predictions de modeles theoriques. L’analyse phenomenologique originale demontre que la description de la production de charmonium dans les collisions hadroniques et de la production dans les desintegrations inclusives des hadrons b dans la gamme entiere des impulsions transverses demeure un defi.
The Geography of the Creative Class in Germany

We analyze the regional distribution of different categories of creative individuals in Germany. Generally, the share of creative people is higher in cities as compared to the rural area The freelancing artists are a kind of exception in this respect; they constitute a relatively high share of the population in some rural area A high share of creative people in a region can be explained by a high level of public provisions and a high share of foreign born population, which can be regarded as an indicator of the “openness” in the local milieu. Good employment opportunities have only a relatively weak impact. Regions with a high share of creatives tend to have an above average level of new business formation, a high level of innovation and a relatively high share of employees in high-tech industries.
Enriching the feature space of transfer learning in user analysis in online social networks

Wikipedia is the biggest, free online encyclopaedia that can be expanded by any-one. For the users, who create content on a specific Wikipedia language edition, a social network exists. In this social network users are categorised into different roles. These are normal users, administrators and functional bots. Within the networks, a user can post reviews, suggestions or send simple messages to the "talk page" of another user. Each language in the Wikipedia domain has this type of social network. In this thesis characteristics of the three different roles are analysed in order to learn how they function in one language network of Wikipedia and apply them to another Wikipedia network to identify bots. Timestamps from created posts are analysed to reveal noticeable characteristics referring to continuous messages, message rates and irregular behaviour of a user are discovered. Through this process we show that there exist differences between the roles for the mentioned characteristics.
Mitigation of vampire attacks in wireless adhoc and sensor networks during packet forwarding phase

Ad-hoc wireless networks are an exciting research direction in sensing and pervasive computing. Advance security work in this area has beenprimarily focused on denial of communication at the routing or medium access control levels. There is a common attack at routing protocol layer, i.e. resource depletion attack, which permanently disables networks by drastically draining nodes' battery power. These “Vampire” attacks are not similar to any specific protocol, but rather depend upon the properties of many popular classes of routing protocols like link state and DSR protocols. These vampire attacks are very difficult to detect, devastating and easy to carry out using as few as one Malicious insider sending only protocol compliant messages. For mitigation of these kinds of attacks, some methods are explained, including a new proof-of-concept protocol that provably bounds the damage caused by Vampires during the packet forwarding phase.
Holonomic control and behaviours for the CAMBADA robotic soccer team

CAMBADA is the RoboCup Middle Size League robotic soccer team created by researchers of the ATRI group of IEETA of University of Aveiro. This thesis presents the developed contributions in holonomic motion control and high-level behaviours. At the motion control level, several restrictions affecting holonomic motion were addressed. This is of vital importance since that given the highly dynamic environment of a soccer game it is crucial to move and position the robots efficiently in the field. At the behaviours level, given the importance of the ball in the soccer game, and considering previous work regarding the estimation of the ball velocity, the active interception behaviour was implemented allowing the robots to engage the ball predicting its movement rather than moving directly to it considering it static. Given the full autonomy of the robots, their perception of the game should be as close to reality as possible. In order to supply additional information to the robot regarding the state of the game, a method to detect if it is stuck was developed. The implemented work improved the team performance and contributed to the victory of a National Championship (Robótica’09) and a remarkable third-place in the RoboCup 2009 in Graz, Austria. Resumo CAMBADA é a equipa de futebol robótico da liga de tamanho médio do RoboCup criada por investigadores do grupo ATRI do IEETA da Universidade de Aveiro. Esta dissertação apresenta as contribuições desenvolvidas no controlo do movimento holonómico e comportamentos de alto-ńıvel. Ao ńıvel do controlo do movimento, várias restrições que afectam o movimento holonómico foram tratadas. Isto é de vital importância visto que dado o ambiente altamente dinâmico de um jogo de futebol é crucial mover e posicionar os robots eficazmente no campo. Ao nivel dos comportamentos, dada a importância da bola no jogo de futebol, e considerando o trabalho realizado no que diz respeito à estimativa da velocidade da bola, o comportamento de intercepção activa foi desenvolvido permitindo aos robots apanhar a bola prevendo o seu movimento em vez de se moverem directamente para a ela considerando-a estática. Dada a autonomia completa dos robots, a sua percepção do mundo deve ser o mais próxima possivel da realidade. De modo a fornecer, ao robot, informação adicional respeitante ao estado do jogo, um método para determinar se está preso foi desenvolvido. O trabalho implementado melhorou a performance da equipa e contribuiu para vitória de um campeonato nacional, Robótica’09, e a um notável terceiro lugar no RoboCup’09 em Graz, Áustria.