Miracle-dz/UniFAR-FTUs huggingface dataset:
Forecasting Inflation Uncertainty in the G7 Countries

There is substantial evidence that inflation rates are characterized by long memory and nonlinearities. In this paper, we introduce a long-memory Smooth Transition AutoRegressive Fractionally Integrated Moving Average-Markov Switching Multifractal specification [ STARFIMA ( p , d , q ) - MSM ( k ) ] for modeling and forecasting inflation uncertainty. We first provide the statistical properties of the process and investigate the finite sample properties of the maximum likelihood estimators through simulation. Second, we evaluate the out-of-sample forecast performance of the model in forecasting inflation uncertainty in the G7 countries. Our empirical analysis demonstrates the superiority of the new model over the alternative STARFIMA ( p , d , q ) - GARCH -type models in forecasting inflation uncertainty.
Kajian Pengaruh Kapasitas Alur Sungai Terhadap Debit Banjir Dan Air Pasang (Studi Kasus: Sungai Oba Di Ibu Kota Propinsi Maluku Utara)

Saat banjir, kapasitas alur sungai meluap dan daya tampung alur sungai menjadi berkurang sehingga perlu diketahui besarnya debit banjir rencana dan pengaruh kapasitas sungai terhadap debit banjir rencana sungai Oba bagian hilir. Tujuan penelitian ini adalah menganalisis besarnya debit banjir dan kapasitas alur sungai terhadap debit banjir rencana sungai Oba bagian hilir. Analisis kuantitatif dilaksanakan melalui perhitungan debit banjir rencana sungai Oba bagian hilir yakni sebesar Tr 2 = 88. 72 m3 / detik, Tr 5 = 114.00 m3 / detik, Tr 10 = 129.78 m3 / detik, Tr 25 = 148.88 m3 / detik, Tr 50 = 162.57 m3 / detik, Tr 100 = 175.85 m3 / detik, debit kala ulang banjir Q 25 tahun (Tr 25 = 148.88 m3 / detik). Pengaruh kapasitas alur sungai terhadap debit banjir rencana dianalisi pada software HEC-RAS 5.0.7. Pada titik banjir patok P50 elevasi muka air + 15.16 m, patok P40 elevasi muka air + 11.52 m, patok P30 elevasi muka air + 7.42 m, patok P25 elevasi muka air + 5.52 m, patok P10 elevasi muka air + 2.07 m, patok P5 elevasi muka air + 0.83 m, patok P0 elevasi muka air + 0.7 m dan pengaruh pasang surut 249,3 m.
Non-Interventional Treatment of Post-Dural-Puncture Headache; High-Flow Oxygen and Pro-Serotonin Agents a Safe and Effective Alternative

Lumbar punctures are commonly performed for diagnostic and/or therapeutic purposes by threading a needle through the outermost layer of the meninges, the dura mater, and into the intrathecal space within the lumbar region of the spine [1]. The intrathecal space contains cerebrospinal fluid (CSF), a clear and colorless fluid, which surrounds the brain and spinal cord and can provide information regarding intracranial pressures, presence of diseases involving the central nervous system (CNS) or surrounding meninges [2-4]. A common complication of dural puncture is a postdural puncture headache (PDPH) which is defined by The International Headache Society as a “headache that develops within 5 days of dural puncture and resolves within 1 week spontaneously or within 48 hours after effective treatment of the spinal fluid leak” [5]. Symptoms of PDPH classically include a frontal and/or occipital headache that improves in the supine position, worsened by sitting or standing, and may be associated with nausea, nick stiffness, vertigo, vision changes, dizziness, or auditory disturbances [6]. PDPH has the propensity to cause significant morbidity; among affected patients, 39% report a duration of at least one week of significant impairment of daily activities while severe PDPH may require hospital admission [7]. The gold standard treatment for PDPH is to administer an epidural blood patch (EBP), autologous blood collected in the periphery vessels and delivered in the area of suspected CSF leak within the spinal canal to “mechanically plug the leak” [8]. However, in order to perform this intervention safely, training and specific equipment are necessary but unfortunately not a common part of the armamentarium of most clinical settings. Among cancer patients, access to the intrathecal space for diagnostic or therapeutic purposes may be part of the standard of care and occurrences of headaches associated with dural puncture in these scenarios are not totally unavoidable. Furthermore, many patients with cancer often have clear contraindications to accessing the epidural space to perform a therapeutic blood patch [9]. Under these circumstances, noninvasive alternatives should be considered (Table 1).
Identification of Hammerstein-Wiener system with application to compensation for nonlinear distortion

The paper is concerned with identification algorithms of Wiener-Hammerstein nonlinear model in frequency domain. By approximately modeling the nonlinearity in the model by polynomial or spline functions, an iterative identification algorithm is proposed to obtain two linear dynamical elements as well as the nonlinear static element. A new efficient predistortion scheme for compensating nonlinear distortion of a high power amplifier is given based on the proposed nonlinear identification method.
Wideband circularly polarised antenna based on tightly coupling effect

A new design of a circularly polarised antenna based on the tightly coupled mechanism is presented. The proposed antenna consists of four tightly coupled dipoles, four impedance transforming networks and a wideband feeding network. Owing to the strong mutual coupling between coupled dipole elements, the proposed antenna realises a wide operating bandwidth. A prototype is manufactured and measured to validate the method. The measured results indicate that the proposed design provides a 10 dB return loss bandwidth of 101% (1.7-5.2 GHz) and a 3 dB axial ratio bandwidth of 77% (2.0-4.5 GHz). The design has a 3 dB gain bandwidth of 56% from 2.6 to 4.6 GHz with a peak gain of 10.4 dBic. Acceptable agreements can be obtained between the simulated and measured results.
The neural substrate of goal-directed locomotion in zebrafish and whole-brain functional imaging with two-photon light-sheet microscopy

The first part of this thesis presents an historical overview of neural recording techniques, followed by a study on the development of a new imaging method for zebrafish neural recording: two-photon light sheet microscopy. Combining the advantages of two-photon point scanning microscopy and light sheet techniques, the two-photon light sheet microscope warrants a high acquisition speed with low photodamage and allows to circumvent the main limitation of one-photon light sheet microscopy: the disturbance of the visual system. The second part of the thesis is focused on goal-directed navigation in zebrafish larvae. After an exhaustive review on chemotaxis, phototaxis and thermotaxis in various animal models, we report a study that reveals the neural computation underlying phototaxis in zebrafish. Combining virtual-reality behavioral assays, volumetric calcium recordings, optogenetic stimulation, and circuit modeling, this work shows that a self-oscillating hindbrain population called the hindbrain oscillator (HBO) acts as a pacemaker for ocular saccades, controls the orientation of successive swim-bouts during zebrafish larva navigation, and is responsive to light in a state-dependent manner such that its response to visual inputs varies with the motor context. This peculiar response to visual inputs biases the fish trajectory towards brighter regions (phototaxis). The third part provides a discussion on the neural basis of ocular saccades in vertebrates. We conclude with some recent preliminary results on heat perception in zebrafish suggesting that the same hindbrain circuit may be at play in thermotaxis as well.
Análise da Partição Ótima do LZ78

O Lempel-Ziv’78 (LZ78) é um codificador universal que tem inspirado v́ arios esquemas pr áticos de compress ão de dados. Embora ele seja assintoticamente ótimo, i.e., sua taxa de compress ão converge para a entropia da fonte, o procedimento de partiç ão da seq̈ uência de entrada n ão é ótimo. Encontrar a partiç̃ aoótima de uma seq̈ uência de entrada para oLZ78 é um problema NP-completo e por esta raz̃ao pouco se sabe sobre o ganho que uma partiç ão mais eficiente produziria noLZ78. Neste trabalho, a partiç ão ótima doLZ78 é analisada. É apresentado um resultado que mostra que o ganho da partiç ão ótima ñao é significativo, no sentido de que o n úmero de segmentos produzidos por esta partiç̃ ao tem o mesmo comportamento assint ótico do ńumero de segmentos produzidos pela partiç ̃ o original do LZ78. Este trabalho ainda apresenta um algoritmo que calcula um limitante inferior para o n úmero de segmentos gerados pela partiç ãoótima, para uma seq üência de entrada arbitŕaria. Este algoritmóe utilizado para medir o desempenho de dois ḿetodos de partiç̃ ao diferentes.
Hybrid MPPT Control: P&O and Neural Network for Wind Energy Conversion System

In the field of wind turbine performance optimization, many techniques are employed to track the maximum power point (MPPT), one of the most commonly used MPPT algorithms is the perturb and observe technique (PO) because of its ease of implementation. However, the main disadvantage of this method is the lack of accuracy due to fluctuations around the maximum power point. In contrast, MPPT control employing neural networks proved to be an effective solution, in terms of accuracy. The contribution of this work is to propose a hybrid maximum power point tracking control using two types of MPPT control: neural network control (NNC) and the perturbation and observe method (PO), thus the PO method can offer better performance. Furthermore, this study aims to provide a comparison of the hybrid method with each algorithm 𝑃𝑂 and NNC. At the resulting duty cycle of the 2 methods, we applied the combination operation. A DC-DC boost converter is subjected to the hybrid MPPT control. This converter is part of a wind energy conversion system employing a permanent magnet synchronous generator (PMSG). The chain is modeled using MATLAB/Simulink software. The effectiveness of the controller is tested at varying wind speeds. In terms of the Integral time absolute error (ITAE), using the PO technique, the ITAE is 9.72. But, if we apply the suggested technique, it is smaller at 4.55. The corresponding simulation results show that the proposed hybrid method performs best compared to the PO method. Simulation results ensure the performance of the proposed hybrid MPPT control.
Coupled Transmission Line Based Slow Wave Structures for Traveling Wave Tubes Applications

High power microwave devices especially Traveling Wave Tubes (TWTs) and Backward Wave Oscillators (BWOs) are largely dependent on Slow Wave Structures for efficient beam to RF coupling. In this work, a novel approach of analyzing SWSs is proposed and investigated. Specifically, a rigorous study of helical geometries is carried out and a novel SWS “Half-Ring-Helix” is designed. This Half-Ring-Helix circuit achieves 27% miniaturization and delivers 10dB more gain than conventional helices. A generalization of the helix structures is also proposed in the form of Coupled Transmission Line (CTL). It is demonstrated that control of coupling among the CTLs leads to new propagation properties. With this in mind, a novel geometry referred to as “Curved Ring-Bar” is introduced. This geometry is shown to deliver 1MW power across a 33% bandwidth. Notably, this is the first demonstration of MW power TWT across large bandwidth. The CTL is further expanded to enable engineered propagation characteristics. This is done by introducing CTLs having non-identical transmission lines and CTLs with as many as four transmission lines in the same slow wave structure circuit. These non-identical CTLs are demonstrated to generate fourth order dispersion curves. Building on the property of CTLs, a ‘butterfly’ slow wave structure is developed and demonstrated to provide degenerate band edge (DBE) mode. This mode are known to provide large field enhancement that can be exploited to design high power backward wave oscillators.
Morphological traits for rapid and simple separation of native and introduced common reed (Phragmites australis)

Abstract Effective management of the introduced invasive grass common reed [Phragmites australis (Cav.) Trin. ex Steud. ] requires the ability to differentiate between the introduced and native subspecies found in North America. While genetic tools are useful for discriminating between the subspecies, morphological identification is a useful complementary approach that is low to zero cost and does not require specialized equipment or technical expertise. The objective of our study was to identify the best morphological traits for rapid and simple identification of native and introduced P. australis. A suite of 22 morphological traits were measured in 21 introduced and 27 native P. australis populations identified by genetic barcoding across southern Ontario, Canada. Traits were compared between the subspecies to identify measurements that offered reliable, diagnostic separation. Overall, 21 of the 22 traits differed between the subspecies, with four offering complete separation: the retention of leaf sheaths on dead stems; a categorical assessment of stem color; the base height of the ligule, excluding the hairy fringe; and a combined measurement of leaf length and lower glume length. Additionally, round fungal spots on the stem occurred only on the native subspecies and never on the sampled introduced populations. The high degree of variation observed in traits within and between the subspecies cautions against a “common wisdom” approach to identification or automatic interpretation of intermediate traits as indicative of aberrant populations or hybridization. As an alternative, we have compiled the five best traits into a checklist of simple and reliable measurements to identify native and introduced P. australis. This guide will be most applicable for samples collected in the late summer and fall in the Great Lakes region but can also inform best practices for morphological identification in other regions as well.
Background Subtraction using an Active Contour Model

Clear background images are useful for various video processing algorithms. Using the fact that non-background objects and their background scenes are not dependent, a contour-based background subtraction algorithm is introduced. The proposed contour-based background subtraction relies on maximizing the joint distribution between the background image and the contour. The proposed algorithm can correctly guide the contour to fit a non-background object even if the initial contour is located far from the boundary. Contour tracking is applied to predict the initial contour of the current frame. Using it results in faster convergent, thus, the initial contour is positioned near the object boundary. An inital initial contour generator is used in the case that the contour tracking cannot find the best estimated initial contour. The algorithm is able to be used without requiring human intervention. The experimental results show that the proposed algorithm has benefits over background subtraction algorithms, the moving average (MA), and the moving average with selective (MAS), with extra computation cost. Comparing selected background images from the video scene, the average of root mean square is 5.65 pixel values, which is much lower than 8.23 from the MA algorithm and 9.72 from the MAS algorithm. Keywords: Active Contour Model; Background Subtraction; Background-Foreground Model; Probabilistic Approach
Static testing of a conductively-cooled, high temperature superconducting rotor for a 1.4 MW electric machine in a thermal vacuum chamber

NASA’s high efficiency megawatt motor (HEMM) is a partially superconducting, 1.4 MW electric machine designed for electrified aircraft propulsion. HEMM’s high performance is enabled by a field winding composed of 2nd generation high temperature superconducting (HTS) coils that are designed to operate at temperatures below 62 K. The superconducting rotor is conductively cooled to cryogenic temperatures using a rotating cryocooler embedded inside the machine’s shaft. This paper presents a static test of the full-scale superconducting rotor in a thermal vacuum chamber. The experimental setup is described in detail. Thermal and electromagnetic 3D finite element analyses of the experimental setup are shown along with a comparison of the model results to model results for HEMM. The thermal response during cool down from room temperature is discussed. Electrical measurements are presented for operation at different dc current excitations up to the rated current of the rotor (57.2 A) and temperature limit of the HEMM design (62 K). The results suggest that minor damage to one superconducting coil occurred at 50 A and 61.2 K, causing increased resistance in the system, but that the system could still be stably operated at 57.2 A and 62 K when conductively cooled by a cryocooler.
Non-Geostrophic and Non-Hydrostatic Stability of a Baroclinic Fluid

Non-geostrophic and non-hydrostatic effects on the stability of Eady's baroclinic model are studied in the range of small Richardson numbers (Ri). The latitudinal as well as the longitudinal variations of wave perturbations are included. There are two growth rate maxima, one is that of the ordinary baroclinic instability on the l (latitudinal wave number)=0 axis, and the other is that of a symmetric instability on the k (longitudinal wave number)=0 axis and |l|*>* when Ri<1. There appears an unstable mode destabilized by the inertial effect. The non-hydrostatic effect supresses the appearance of Helmholtz type instability in the range of positive Ri. There is little difference between eigenvalues in the case (k, l) and (k, -l), but the structure of perturbations in the two cases differs greatly with the increase of |l| . The effect of the *-term is also studied under non-geostrophic and non-hydrostatic conditions.
Improved on-state performance of AlGaN/GaN Fin-HEMTs by reducing the length of the nanochannel

In this letter, AlGaN/GaN Fin-HEMTs with different nanochannel geometric parameters were fabricated and characterized. The drain current density, transconductance, and on-resistance were improved by reducing the length of the nanochannel, which was attributed to the modulation of access resistance by changing the length of the nanochannel. The threshold voltage shifted to the positive direction with the decrease in the width of the nanochannel and showed the independence on the length of the nanochannel. With the reduction in the length of the nanochannel, the gate swing was increased by suppressing the increase of source resistance, improving the linearity of transconductance.
Modeling and Control of a 5-DOF Parallel Continuum Haptic Device

In this article, we propose a new continuum robotics approach for haptic rendering and comanipulation. This approach is illustrated using a robotic interface with six motorized fixed axes connected by deformable beams, in parallel, to an end effector with 5 degrees of freedom. Apart from the rotation of the motors, this design has no articulation, and the motion of the end effector is achieved by deformation of the beams. The flexible beams are equipped with bending sensors, and the motors have encoders. We use a nonlinear finite element mechanical model of the robot based on a mesh of beam elements that is computed in real time at 20 Hz. The bending sensors are incorporated into the model, which allows us to obtain an accurate estimate of the force exerted by the user on the end effector. The model enables a new methodology for calculating the workspace of the continuum haptic device. The model also is propagated to a higher frequency loop (500 Hz), which performs sensing and control of the robot at high rates, using an admittance-type control to command new positions of the actuators. We show that this control methodology allows haptic rendering of virtual walls that are stiffer than the natural stiffness of the robot. Finally, we demonstrate the use of the device for simple comanipulation tasks.
ФОНДОВИ СТАРЕ И РИЈЕТКЕ КЊИГЕ У БИБЛИОТЕКАМА МУЗИЧКЕ АКАДЕМИЈЕ И ПОЉОПРИВРЕДНОГ ФАКУЛТЕТА УНИВЕРЗИТЕТА У ИСТОЧНОМ САРАЈЕВУ

У овом раду представићемо старе и ријетке књиге коју посједују библиотеке Музичке академије и Пољопривредног факултета Универзитета у Источном Сарајеву. Рад ће бити конципиран као прегледни чланак. Приказаћемо кратку анализу значаја посједовања старе и ријетке књиге, како са аспекта библиотечке науке, тако и значаја за струку, науку и умјетност ових збирки за поменуте високошколске установе. Потрудићемо се да прикажемо реперезентативне примјерке старе и ријетке књиге с почетка 20, као и с краја 19. вијека. Важно је поменути да обе библиотеке посједују и књиге с краја 19. вијека, које представљају, не само историјску и културну баштину, него су и својеврсни показатељ стања културе, умјетности и науке у то вријеме, као и значаја штампарства и књижарства. Такође, обрадићемо часописе и гласнике коју су били значајна информациона средства онога времена, као и историјски извори о култури и умјетности која је живјела у том периоду. Рад ће обухватити и осврте на штампаре односно штампарије, врсте повеза, папира, али и комплетну опрему књиге. Негдје ћемо можда и изненадити како и са колико пажње и квалитета су ондашњи књижари и штампари придавали важност самом изгледу издања. Погледаћемо и осврнути се кроз низ фотографија, како изгледају та издања и колико су данас значајна. Један дио рада ће обухватати стару и ријетку књигу која се може представити као издање стране књига (како језика, тако и издавача), али у највишем обиму ће то бити српска штампана књига и периодика. Значај овог рада јесте у приказивању разноликости и квалитету фондова библиотека високошколских установа, а у сврху њиховог афирмисања и завршетка ере ниподаштавања постојања и рада, како библиотека овог типа, тако и афирмисања рада библиотекара.
Effects of Banana (Musa spp.) Bract Flour on Rats Fed High-Calorie Diet

SUMMARY Research background The extensive cultivation of bananas (Musa sp.) is related to producing tons of residues, such as leaves, pseudostems and bracts (inflorescences). The banana bract is a commercially interesting residue due to its dietary fibre content and high antioxidant potential. With this in mind, this study evaluates the effects of administering banana bract flour in animal models fed a cafeteria diet. Experimental approach Thirty-two male rats were divided into 4 groups: (i) control diet, (ii) control diet with 10 % banana bract flour, (iii) hypercaloric diet, and (iv) hypercaloric diet with 10 % bract banana flour. The study was conducted for 12 weeks and included analysis of phenolic compounds, assessment of the antioxidant effect of banana bract flour, determination of serum biochemical parameters (glucose, total cholesterol, triglycerides, aspartate aminotransferase (AST), alanine transaminase (ALT), amylase, albumin, uric acid, creatine, total protein, and oral glucose), determination of faecal fat content, and histomorphological analysis of the liver, pancreas and adipose tissue. In addition, molecular parameters such as IL6, total and phosphorylated JNK, total and phosphorylated IKKβ, TNFα, TLR4 and HSP70 were determined. Results and conclusions The banana bract flour showed a high content of phenolic compounds and an antioxidant effect. The in vivo results suggest that the supplementation of a hypercaloric diet with banana bract flour prevented pathological damage by reducing total cholesterol and glucose amounts, which may imply a hepatoprotective effect of this supplement. Thus, using banana bract flour as a supplement can increase the consumption of fibre, antioxidants and bioactive compounds. Novelty and scientific contribution The development of flour from banana waste and its inclusion in the diet can prevent and/or help treat obesity. In addition, the use of banana bracts can help protect the environment, as they are considered a source of waste by the food industry.