Miracle-dz/UniFAR-FTUs huggingface dataset:
Implikacije skrivenog kurikuluma

Posljednjih se godina u javnom diskursu cesto govori o kurikulumu, njegovoj reformi i sadržajima koje bi trebao obuhvatiti. Zanemaruje se cinjenica da je utjecaj skrivenog kurikuluma snažniji od utjecaja službenih kurikuluma. Nastavom, odnosno realizacijom službenog kurikuluma, kreira se i potice socijalno ponasanje, organizira se svakodnevni život u ucionici i prenose se odgojne vrijednosti na ucenike. Postoje mnoge skolske aktivnosti koje su izravno ili neizravno ukljucene u odgoj djece i koje kao takve cine skriveni kurikulum. Skriveni kurikulum nije dio službenih i javnih programa, on zapravo cini regulativu pedagoske interakcije i odnosi se na implicitnu praksu specificnu za određenu odgojno-obrazovnu sredinu. Naime, njime se definira ono sto ucenici usvoje iz vrijednosti i normi nastavnika, skolskih rituala i procedura, iz fizickog okruženja, odnosa između subjekata u skoli, kulture skole itd. U ovom radu nastojat cemo prikazati neke od implikacija skrivenog kurikuluma, sa posebnim osvrtom na nastavnika koji usmjerava odgojnoobrazovni proces. Zbog nemogucnosti jednoznacnog definiranja, autori su se složili da skriveni kurikulum odražava nezapaženo standardiziranje odnosa unutar konteksta skole i da su od presudne važnosti obrasci ponasanja nastavnika. Stoga je cilj ovoga rada pojmovno i sadržajno odrediti koncept skrivenog kurikuluma te prikazati ga u kontekstu kulture skole, implicitne teorije nastavnika, njegove ideoloske strane i empirijskog istraživackog okvira.
Inverse Generalized Maximum Flow Problems

A natural extension of maximum flow problems is called the generalized maximum flow problem taking into account the gain and loss factors for arcs. This paper investigates an inverse problem corresponding to this problem. It is to increase arc capacities as less cost as possible in a way that a prescribed flow becomes a maximum flow with respect to the modified capacities. The problem is referred to as the generalized maximum flow problem (IGMF). At first, we present a fast method that determines whether the problem is feasible or not. Then, we develop an algorithm to solve the problem under the max-type distances in O ( m n · log n ) time. Furthermore, we prove that the problem is strongly NP-hard under sum-type distances and propose a heuristic algorithm to find a near-optimum solution to these NP-hard problems. The computational experiments show the accuracy and the efficiency of the algorithm.
Amplitude Modulation Index as Feature in a Brain Computer Interface

Received: 28 March 2019 Accepted: 2 June 2019 The goal of this research involving a motor imagery brain-computer interface paradigm is to assess the possibility of enhancing the classification rate handling a feature vector based on the modulation of electrophysiological brain activity in specific bands. A new amplitude modulation energy index of the cerebral rhythms is proposed as feature vector concept. The method is proven on a public database and on a set of electroencephalographic data recorded in our own laboratory. In both cases, only eight electrodes are used in order to reach high performance classifying rates. The discrimination of motor tasks (imagination of right and left hand movements) is analyzed by means of five classifiers: support vector machine, k nearest neighbor, linear discriminant analysis, quadratic discriminant analysis and Mahalanobis distance based classifier. For our database, the medians of the classification rates for two of classifiers are very high (94.62 % 97.76 %) when some rhythms are modulated in theta and alpha bands. Significantly higher classification rates reported herein (greater than 90 % for both of the databases) compared with classifiers trained on the other features prove that the index may be very useful for highlighting the modulation found in certain bands of the EEG rhythms.
Políticas de Escalonamento para Transferências de Dados em Massa Inter Centro de Dados utilizando Roteamento e Alocação de Espectro

Transferências de Dados em Massa (BDT) e sua generalização, Múltiplas Transferências de Dados em Massa (MBDT), são serviços críticos para o funcionamento dos negócios nas redes inter centro de dados geo-distribuídas. Nessas redes, aplicações do tipo BDT ou MBDT realizam sincronizações, ressincronizações, replicação de dados, migração de máquinas virtuais e agregação big data, entre outras tarefas, exigindo grandes quantidades de largura de banda e soluções eficientes de engenharia de tráfego. As Redes Ópticas Elásticas (EON) permitem o provisionamento e alocação de recursos sob demanda por meio do Roteamento e Alocação de Espectro (RSA). Este trabalho propõe e compara soluções dinâmicas de RSA cientes da aplicação, que empregam as técnicas de escalonamento Smallest Deadline First (SDF), Larger Data Amount (LDA), Smallest Data Amount (SDA) e Smallest Remaining Time (SRT).
Research on the Application of R Software in the Teaching Analysis of University Computer I

In order to improve the teaching effect of University Computer I course and promote the cultivation of students’ computational thinking, this article uses Rattle package of R software to perform data analysis on the end-of-term computer examination score for 2015 Grade science specialty in University Computer I at Guizhou Normal University. The analysis mainly includes three aspects: the analysis of all score data samples, the analysis of the impact degree of the professional course scores, and the analysis of the influence degree of the course scores set by the question type. The analysis result shows that, the main core factors influencing the course learning effect of University Computer I include the difference of students’ learning capacity and the setting of the course content. By focusing on these two core factors, this paper puts forward a teaching reform approach to build course learning platform to enrich course learning resources, strengthen course operation and application training, set up professional elective modules, and reform the model of teaching evaluation. Keywords—University Computer I; R Software; Teaching reform
Millimeter-Wave Phased-Array Antenna-in-Package (AiP) Using Stamped Metal Process for Enhanced Heat Dissipation

This letter presents an unprecedented stamped metal antenna-in-package (AiP) concept for millimeter-wave multiple-input–multiple-output (MIMO) and phased array applications. The stamped metal antenna containing an aperture dually functions as an efficient heat sink. Moreover, the presented antenna topology can be mass-produced using a stamping technology, which is widely used for conventional heat sinks. The ground wall of the proposed antenna encompassed by the dielectric substrate, which is thermodynamically equivalent to a cooling medium, is connected to the shield structures to guide the convection heat emitted by the radio frequency integrated circuits (RFICs) and discharges this heat into free space. Details of the proposed AiP topology are discussed, and the parametric effects of the key design factors are quantitatively analyzed. To verify the proposed AiP, the optimized design is fabricated using standard printed circuit board (PCB) and press technology. The fabricated 1 × 8 subarray features an impedance bandwidth of 700 MHz with a center frequency of 28.5 GHz and a measured gain of 13.78 dBi. Computational fluid dynamics results ascertain that the proposed stamped metal AiP effectively discharges the heat emission generated from the RFICs.
Comparison of Sensitive Volumes Associated With Ion- and Laser-Induced Charge Collection in an Epitaxial Silicon Diode

A sensitive volume is developed using pulsed laser-induced collected charge for two bias conditions in an epitaxial silicon diode. These sensitive volumes show good agreement with the experimental two-photon absorption laser-induced collected charge at a variety of focal positions and pulse energies. When compared to ion-induced collected charge, the laser-based sensitive volume overpredicts the experimental collected charge at low bias and agrees at high bias. A sensitive volume based on ion-induced collected charge adequately describes the ion experimental results at both biases. Differences in the amount of potential modulation explain the differences between the ion- and laser-based sensitive volumes at the lower bias. Truncation of potential modulation by the highly doped substrate, at the higher bias, results in similar sensitive volumes.
Electron dynamics in strained graphene

This paper presents a theoretical description of the effects of strain induced by out-of-plane deformations on charge distributions and transport on graphene. A review of a continuum model for electrons using the Dirac formalism is complemented with elasticity theory to represent strain fields. The resulting model is cast in terms of scalar and pseudo-magnetic fields that control electron dynamics. Two distinct geometries, a bubble and a fold, are chosen to represent the most commonly observed deformations in experimental settings. It is shown that local charge accumulation regions appear in deformed areas, with a peculiar charge distribution that favors occupation of one sublattice only. This unique phenomenon that allows to distinguish each carbon atom in the unit cell, is the manifestation of a sublattice symmetry broken phase. For specific parameters, resonant states appear in localized charged regions, as shown by the emergence of discrete levels in band structure calculations. These findings are presented in terms of intuitive pictures that exploit analogies with confinement produced by square barriers. In addition, electron currents through strained regions are spatially separated into their valley components, making possible the manipulation of electrons with different valley indices. The degree of valley filtering (or polarization) for a specific system can be controlled by properly designing the strained area. The comparison between efficiencies of filters built with this type of geometries identifies extended deformations as better valley filters. A proposal for their experimental implementations as component of devices, and a discussion for potential observation of novel physics in strained structures are presented at the end of the paper.
Hybridized plasmon modes in a system of metal thin film–nanodisk array

Controlling the hybridization is a very powerful tool to manipulate the modes in a single nanostructure. We investigate the hybridization between localized and propagating surface plasmons in a nanostructure system where a thin metal layer strongly interacts with a nanodisk array. Hybrid plasmon resonances are observed in the reflection spectra obtained from finite-difference time domain simulations and experimental measurements in the visible-near-infrared region. We demonstrate how the geometrical parameters of the nanostructure can be utilized to bring these plasmon modes in the strong coupling regime. The hybrid plasmon modes exhibit anticrossing with a Rabi splitting of ∼ 0.1 eV, which is the signature of strong coupling. Near-field profiles of the hybrid modes exhibit a mixture of localized and propagating plasmon characteristics, with propagating modes excited on both sides of the metal film. Our design promises richer implementations in light manipulation towards novel photonic applications compared to the systems with thick metal films.Controlling the hybridization is a very powerful tool to manipulate the modes in a single nanostructure. We investigate the hybridization between localized and propagating surface plasmons in a nanostructure system where a thin metal layer strongly interacts with a nanodisk array. Hybrid plasmon resonances are observed in the reflection spectra obtained from finite-difference time domain simulations and experimental measurements in the visible-near-infrared region. We demonstrate how the geometrical parameters of the nanostructure can be utilized to bring these plasmon modes in the strong coupling regime. The hybrid plasmon modes exhibit anticrossing with a Rabi splitting of ∼ 0.1 eV, which is the signature of strong coupling. Near-field profiles of the hybrid modes exhibit a mixture of localized and propagating plasmon characteristics, with propagating modes excited on both sides of the metal film. Our design promises richer implementations in light manipulation towards novel photonic applications co.
ANALISIS PERBANDINGAN METODE SAW DAN WP PADA SISTEM PENDUKUNG KEPUTUSAN PEMILIHAN WEDDING ORGANIZER DI SURABAYA

Saat ini banyak sekali jasa Wedding Organizer (WO) yang memudahkan calon pengantin dalam mempersiapkan pernikahan. Masing-masing jasa WO menawarkan banyak pilihan paket layanan pernikahan yang menarik, kompetitif dan spesifik. Di lain pihak, hal ini terkadang justru membuat calon pengantin menjadi sulit dalam menentukan pilihan WO. Untuk membantu dalam menentukan pengambilan keputusan tersebut, digunakan pendekatan Sistem Pendukung Keputusan (SPK). Kriteria yang digunakan meliputi : rating, tahun berdiri, harga, foto per roll, variasi menu makanan. Penelitian ini bertujuan untuk menganalisis hasil dari metode Simple Additive Weighting (SAW) dan Weighted Product (WP) sehingga dapat ditentukan metode mana yang lebih relevan untuk diimplementasikan pada kasus pemilihan WO di Surabaya. Berdasarkan data responden riil dari kuisioner beberapa pasangan calon pengantin, hasil pengukuran metode Hamming Distance menunjukkan selisih yang tidak terpaut jauh yaitu 78% untuk metode SAW dan 80% untuk metode WP. Meskipun secara umum kedua metode tersebut relatif sama-sama relevan, namun dalam beberapa kondisi khusus tertentu metode SAW dinilai relatif lebih relevan untuk diimplementasikan pada kasus ini dibandingkan dengan metode WP.
Catalytic oxidation of methanol in the cenospheric fluidized bed

The process of oxidation of gaseous CH3OH by N2O was carried out over an Ag-Fe2O3-cenosphere catalyst whose structure can be defined as double shell-core catalyst. Preparation of the catalyst was carried out in two stages: thermal decomposition of Fe(CO)5 at above 160? C and then electroless Ag plating. The process of methanol degradation by N2O was carried out in a fluidized bed reactor. The study confirms that it is possible to achieve complete degradation of N2O and CH3OH for the obtained catalyst at above 450? C when the contact time of the reactants with the catalyst is approximately 6 second and when the substrates are used in stoichiometric ratios. More than 60% of the hydrogen contained in CH3OH can be converted to molecular hydrogen at 500? C with a ratio of N2O/CH3OH not greater than 0.6 and with a contact time of reactants with the catalyst of approx. 6 seconds.
3D Printing Optofluidic Mach-Zehnder Interferometer on a Fiber Tip for Refractive Index Sensing

An optofluidic polymer Mach-Zehnder interferometer (MZI) fabricated via direct laser writing (DLW) on a fiber tip is proposed and experimentally demonstrated as a refractometer where one of the interference arms is made of the polymer waveguide while the other arm is a hollow cavity with a 1- $\mu \text{m}$ wall thickness and containing two open channels. The analytes can be filled through the channels, forming an optofluidic component of the interferometer. In this letter, two MZI microstructures with different hollow lengths are described and characterized. The experimental results of the two MZIs in air and water show that the MZI with a longer hollow cavity has higher sensitivity. Analytes such as de-ionized (DI) water and glucose solutions with different concentrations have been measured in the MZI with the long hollow cavity. The results show that this kind of sensing device provides a promising platform for refractive index measurements with a sensitivity of 593.75 nm/RIU based on the FSR calculation method.
A Gesture Recognition Method Integrating RGB and Depth Image Features

The key to the success of gesture recognition often depends on the extraction and representation of the gesture features. Compared with the traditional gesture recognition methods, the dual-channel convolutional neural network that we constructed in this paper can extract the features of RGB and depth images of the same gesture, making the gesture feature mining and extraction more accurate, and gesture recognition more robust. Firstly, the features are learned from the two channels respectively by convolutional neural network. Then, those features are mapped to the fusion layer, which the fusion features are used for classifier training. Finally, the model recognition rate can reach 98.11%, through the collected gesture database verification
On the hurricane collective molecular dynamics

We study the molecular dynamics underlying the formation and the evolution of hurricanes. The giant global structure of hurricanes cannot be solely the results of random molecular kinematics. We show that the non-stationary, topologically non-trivial hurricane behavior is the manifestation of the collective dynamics at the molecular level. This is described in terms of spontaneous breakdown of the rotational symmetry of the water molecule electrical dipoles. The long range molecular correlations generated as a consequence of the spontaneous breakdown of symmetry are responsible of the large scale collective motion resulting in the hurricane structure. The critical non-stationary dynamics is analyzed in terms of the non-stationary time dependent Ginzburg-Landau equation leading to the vortex equation. Phase transition, criticality, temperature dependence, energy exchanges and entropy are studied. Energy storage and dissipation processes in the coherent state dynamics are analyzed. Finally the self-similar fractal structure of the hurricane is shown to be the manifestation of the coherence of the collective molecular dynamics.
The Elastic, Electronic and Thermodynamic Properties of a New Cd Based Full Heusler Compounds - A Theoretical Investigation Using DFT Based FP-LMTO Approach

The Elastic, Electronic and Thermodynamic Properties of a New Cd Based Full Heusler Compounds — A Theoretical Investigation Using DFT Based FP-LMTO Approach S. Aouimer, M. Ameri, D. Bensaida,c,∗, N.E. Moulay, A.Z. Bouyakoub, F.Z. Boufadi, I. Ameri and Y. Al-Douri Laboratory of Physical Chemistry of Advanced Materials, University of Djillali Liabes, BP 89, Sidi-Bel-Abbes 22000, Algeria Physics Department, Faculty of Science, University of Sidi-Bel-Abbes, 22000, Algeria Institute of Science, University Belhadj Bouchaib, BP 284, Ain-Temouchent, 46000, Algeria Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, 50603 Kuala Lumpur, Malaysia
The Good, The Fast And The Better Pedestrian Detector

Deteccao de pedestres e um bem conhecido problema em Visao Computacional, principalmente por causa de sua direta aplicacao em vigilância, seguranca de trânsito e robotica. Na ultima decada, varios esforcos foram realizados para melhorar a deteccao em termos de acuracia, velocidade e aprimoramento de features. Neste trabalho, nos propomos e analisamos tecnicas focando nesses pontos. Primeiramente, nos propomos uma precisa random forest obliqua (oRF) associado com Partial Least Squares (PLS). O metodo consiste em utilizar o PLS para encontrar uma superficie de decisao em cada no da arvore de decisao, que melhor divide as amostras apresentadas a ele, baseado em algum criterio de pureza. Para mensurar as vantagens providas pelo PLS sobre a oRF, nos comparamos o metodo proposto com o oRF baseado no SVM. Em segundo lugar, nos avaliamos e comparamos abordagens de filtragens para reduzir o espaco de busca e manter somente potenciais regioes de interesse para ser apresentado para os detectores, acelerando o processo de deteccao. Resultados experimentais demonstram que os filtros avaliados podem descartar um elevado numero de janelas de deteccao sem comprometer a acuracia. Por fim, nos propomos uma nova abordagem para extrair poderosas features em relacao a cena. O metodo combina resultados de distintos detectores de pedestres reforcando as hipoteses humanas, enquanto que suprimindo um significante numero de falsos positivos devido a falta de consenso espacial quando multiplos detectores sao considerados. Nossa abordagem proposta, referida como Consenso Espacial (SC), supera todos os metodos state-of-the-art previamente publicados.
Hyperfine excitation of CH and OH radicals by He

Context. Because of their high reactivity, the CH and OH radicals are of particular interest in astrochemistry. Modeling of CH and OH molecules requires the calculation of accurate radiative Einstein coefficients and rate coefficients for (de)excitation by collisions with the most abundant species such as H2 and He. Aims. The present paper focuses on the calculation of inelastic rate coefficients among the lowest OH/CH hyperfine levels in their ground vibrational state induced by collisions with He atoms. Methods. Calculations of hyperfine (de)excitation of CH/OH by He were performed using the close-coupling and recoupling methods from the most recent ab initio potential energy surfaces. Results. Cross sections for transitions among the 60 and 56 lowest hyperfine levels of CH and OH, respectively, were calculated for collision energies up to 2500 cm−1. These cross-sections were used to calculate the rate coefficients for temperatures between 10 and 300 K. A propensity rule for transitions with ΔF = Δj was observed. Conclusions. The new rate coefficients will help significantly in interpreting the CH/OH spectroscopic data observed with current and future telescopes, and help to accurately describe the OH masers and the hyperfine anomalies in CH emission spectra.
Sistemas de localização indoor utilizando Bluetooth Low Energy: Uma revisão sistemática

localização indoor mostra-se essencial visto que há um crescimento de aplicações que fazem o uso desta. Consequentemente, a necessidade de localizar usuários de forma eficiente nestes ambientes também surge. Por isto, este artigo realiza uma revisão sistemática dos métodos existentes de localização indoor. Com a definição e a aplicação de um método de pesquisa, a revisão tem o intuito de determinar como se encontra o atual estado da arte deste assunto.
PIEZOELECTRIC TRANSDUCER-TUNED FOURTH-ORDER MICROSTRIP BANDPASS FILTER WITH CROSS-COUPLING

This paper presents a piezoelectric transducer-tuned fourth-order bandpass filter (BPF). The proposed filter consists of four open-loop resonators which form cascaded quadruplet (CQ) sections with a capacitive cross coupling. There are two transmission zeros (TZs) in the lower and upper stopband to further improve the selectivity of the filter. The structure parameters are optimized by using High Frequency Structure Simulator (HFSS). The piezoelectric transducer (PET) together with a dielectric substrate is used as a tuning element. The effects of the PET on the coupling coefficient and external quality factor are analyzed. The designed tunable filter has been manufactured and measured. The measured results show that the center frequency of the filter changes from 2.48 GHz to 2.28 GHz; the insertion loss basically keeps constant; 3 dB bandwidth of the filter changes from 156 MHz to 168 MHz over the tuning range; and the positions of the TZs in the stopband move synchronously as the center frequency varies.