Miracle-dz/UniFAR-FTUs huggingface dataset:
Topology of arrangements and position of singularities

— This work contains an extended version of a course given in Arrangements in Pyrénées. School on hyperplane arrangements and related topics held at Pau (France) in June 2012. In the first part, we recall the computation of the fundamental group of the complement of a line arrangement. In the second part, we deal with characteristic varieties of line arrangements focusing on two aspects: the relationship with the position of the singular points (relative to projective curves of some prescribed degrees) and the notion of essential coordinate components. RÉSUMÉ. — Ce travail est un version étendue du cours donné en Juin 2012 à Pau dans le cadre de l’École Arrangements in Pyrénées. School on hyperplane arrangements and related topics. Dans la première partie, nous rappelons comment calculer le groupe fondamental du complément d’un arrangement de droites. La deuxième partie est consacrée aux variétés caractéristiques des arrangements de droites. Deux aspects sont étudiés : la relation avec la position des points singuliers (par rapport aux courbes projectives pour certains degrés fixés) et la notion de composantes coordonnées essentielles. (1) Departamento de Matemáticas, IUMA, Universidad de Zaragoza, c/ Pedro Cerbuna, 12, E-50009 Zaragoza SPAIN artal@unizar.es Dedicado a mi hermana que nos dejó poco después de terminar el curso que da origen a estas notas. Será imposible olvidarte Partially supported by MTM2010-21740-C02-02 and Grupo Consolidado Geometra E15.
A Compact Planar 90 ° Branch Line Coupler Using S-Shaped Structure Loading for Wideband Application

─ This paper presents the design of a wideband microstrip branched branch line coupler (BLC). The wideband performance of the BLC means that it possesses equal coupling and difference of phases throughout the operating frequency band, from 4 GHz to 6 GHz (based on a 10 dB, i.e., VSWR ≤ 2). The compactness of the proposed design is depending on the replacement of the branched transmission lines (TL) instead of the ordinary TLs. Small and easy to fabricate microstrip layout topology for the BLC has been designed and constructed relying on a low cost dielectric material, the well-known FR4. In addition, the proposed coupler can be easily fabricated on the printed circuit board without any lumped element. The proposed BLC exhibits couplings and phase errors within −3.75 ± 1 dB and 4° over a 60 % bandwidth (BW) with a center frequency of 5 GHz (based on 15 dB). Index Terms ─ Compact, coupler, microstrip, planar, and wideband.
LOW-RESONANT-FREQUENCY MEMS ELECTRET ENERGY HARVESTER WITH X-SHAPED HIGH-ASPECT-RATIO PARYLENE SPRING

X-shaped high-aspect-ratio parylene spring has been proposed for electret energy harvester in order to suppress the rotational motion of the seismic mass and thus to increase the rate of the overlapping area change. An electret energy harvester prototype with the X-shaped spring has been successfully microfabricated, and 1.5 µW output power has been obtained with a broad operation frequency range of 16 - 28 Hz. The rotational motion of the seismic mass is suppressed to 1/5 if compared with the conventional design, and 20 % increase in the output power has been achieved.
THE CHARACTERIZATION STUDY OF FERRITES (MAGNESIUM AND MANGANESE) USING SOL GEL METHOD (Kajian Pencirian untuk Ferit (Magnesium dan Mangan) Menggunakan Kaedah Sol Gel)

A sol gel method with citric acid as an anionic surfactant was used to fabricate nano magnesium ferrites (MgFe2O4) and manganese ferrites (MnFeO3) under different calcination temperatures (300°C, 600°C and 800°C) for 2h, respectively. The Fourier Transformation Infrared (FTIR) spectra of magnesium ferrites showed the formation of tetrahedral and octahedral peaks of the metal oxides, which are getting remarkable after calcination at 300°C because of the volatile matters removal (H2O, CO2, NO2, etc.). The results of the single point Brunauer, Emmett and Teller (BET) method showed a substantial decrease of surface area for both the magnesium and manganese ferrites as the calcinated temperatures getting increased from 300°C to 800°C. The SEM micrograph of the magnesium ferrite showed flake structures at 800°C, and that of manganese ferrite showed granule structures at the same temperature. The results of X-Ray Diffraction (XRD) analysis of magnesium ferrite obtained a range of crystalline sizes from 11 nm to 60 nm, and those of manganese ferrite from 27 nm to 38 nm as the temperatures of both ferrites (magnesium and manganese) increased from 300°C to 800°C. The results of this study are useful for further applications, such as semiconductors, heterogeneous and photo catalysts, magnetic materials and sensors.
Differences in the Central Neural Activation under Emotional Stress across the Menstrual Cycle

The present study had several goals. First, we aimed to investigate the potential differences in the activation of the corticolimbic structures during emotional stress in healthy women across the menstrual cycle using stress imagery. Second, we searched for differences in the subjective anxiety under emotional stress across the menstrual cycle and tried to correlate the perceived level of anxiety to activation of the specific corticolimbic structures. Third, we attempted to compare central neural activation of women in follicular and in luteal phases of the menstrual cycle separately to that of men during emotional stress to investigate potential differences in neural response. We used perfusion based functional magnetic resonance imaging (MRI) and blood oxygen level dependent (BOLD) contrast to measure cerebral blood flow response to the emotional stress using stress imagery in 29 healthy volunteers (9 women in follicular phase, 10 women in luteal phase, and 10 men). Cycle-dependent comparison of the stress response in women revealed that women in the follicular phase had greater activation in the areas of the ventro-medial prefrontal cortex (VMPFC), with levels of activation comparable to those of men, and anterior insula, while women in the luteal phase of their menstrual cycle demonstrated increase blood flow in the areas of the anterior cingulate and hippocampus at P = 0.01. Males showed overall greater degree of corticolimbic activation, specifically in the bilateral hippocampi and right prefrontal cortex regardless of which group of women they were compared to. When compared to women in different phases of the menstrual cycle specifically, men showed greater cerebral blood flow in bilateral cingulate cortices and right hippocampus compared to women in the follicular phase, and
Anti-Apoptosis and Regeneration in the Visual System: Effects of BAG1 (Bcl-2-associated athanogene-1)

In the present work, we investigated Bcl-2-associated athanogene-1 (BAG1) as a therapeutic molecule in the lesioned visual system in vivo. The effects of BAG1 were tested in two in vivo models of apoptosis and regeneration, the optic nerve axotomy and optic nerve crush. BAG1 was overexpressed in retinal ganglion cells (RGCs) under the control of a neuron-specific promoter using Adeno-associated virus (AAV) vectors. AAV-mediated overexpression of BAG1 significantly increased RGC survival compared to PBS and AAV.EGFP-treated controls, what was confirmed in BAG1+/- transgenic mice. BAG1 overexpression also significantly increased in vivo regeneration and in vitro neurite outgrowth of RGCs. Following AAV.BAG1 application, a significant increase in the number and length of regenerating axons after optic nerve crush was observed. In primary RGCs, BAG1 overexpression resulted in an approximately three-fold increase in neurite length and growth cone surface. The molecular mechanisms of BAG1-mediated regeneration were further investigated in in vitro studies in two different cell types, the primary RGCs and the rat neuronal CSM cell line stably transfected with BAG1. BAG1 induced translocation of Raf-1 and ROCK2 from the membrane to the cytoskeleton and the perinuclear regions, respectively. Most importantly, ROCK activity was significantly reduced in a Raf-1-dependent manner upon BAG1 overexpression. In summary, we show that BAG1 acts on three different levels, by inhibition of lesion-induced apoptosis, increase of the intrinsic regeneration potential and interaction with the inhibitory ROCK signaling cascade. Thus, BAG1 is a promising candidate for the development of future therapeutic strategies targeting CNS regeneration in vivo.
Mercury Removal From Petroleum Based Industries Wastewater By P. Putida

Mercury pollution is one of a primary environmental issue and public health problem. The purpose of this research is to remove the mercury using pure culture Pseudomonas putida (ATCC 49128) at optimum growth parameters such as technique of culture, acclimatization time and speed of incubator speed. In this study, the optimum growth parameters ofP. putida were obtained to achieve the maximum of mercury removal. Thus, a field study were carried out at two different location based on petroleum industrial plants in Peninsular Malaysia. Processes involved in this research which is P. putida behavior in rehydrating free-dried growing method, growth parameters and optimum operating conditions. Analysis that carried out are turbidity, total dissolved solid and suspended solid where related to growth of P. putida. Efficiency of mercury removal from actual petroleum based industries plant 1 (P1) wastewater with the presence of 1000 ppb Hg increased from 84% after 4 hours to 90.5% after 96 hours. For plant 2, the sample with presence P. putida and nutrient broth had the highest of mercury removal which is 97.27%. This results show by using P. putida is efficient for mercury removal from actual petroleum.
Inverse modeling to predict and characterize indoor climates

Computational research on monumental buildings yields three problems regarding current building models: tedious modelling, relatively long simulation times, difficult to characterize the building by models parameters. A simplified building model with physical meaning is developed which is capable of simulating indoor temperature and humidity. The parameters of the model are identified by an optimization algorithm which fits the output of the model to measurements. The method consisted of: developing simplified building models based on insights from a literature review; fitting the models to a 17th century castle’s indoor climate; based on three criteria the best performing model is chosen and validated. The validation consisted of: residual analysis; applying the chosen model to a 16th century Cathedral, a parameter analysis. Concluding: inverse modelling is applied successfully to reproduce the free floating indoor climate of monumental buildings; characterization of the building remains a challenge.
Impact of Movie Streaming over Traditional DVD Movie Rental—An Empirical Study

Traditional movie DVD rental model has been challenged by a new business model of movie stream. Movie stream possesses convincing advantages over the traditional DVD rental. E-commerce shows a trend in the movie industry that consumers can stream comparable quality movies and TV shows directly from the Internet instead of waiting for the DVDs in the mail. Thanks to global technology advancement, movie stream has already prevailed. This study focuses on consumers’ preferences of decision making variables for streaming movie from the Internet and the traditional DVD movie rental. The results indicate that consumers are shifting from DVD movie rental to movie stream, while home entertainment industry needs to improve both in technology and customer service. The consumers favor movie streaming and make it better competing with other ways of watching movie. The quality of movie stream and renting DVD disks may be less important for movie viewers. Movie industry should make movie stream easy to watch.
Customer Switching Behavior in Iran Banking Services Industry

The costs of retaining an existing customer are one fifth of the costs of acquiring a new customer for a firm. This statement is considered as a predominant notion in marketing. According to this notion, existing customers switching of a firm leads to create lots of costs for that firm. Therefore, the present study has been conducted with the aim of finding the causes of the switching intentions and influential factors on the customers switching intentions in Iran Banking Industry. This study is a descriptive-survey research carried out on Iran Banking Industry. 397 customers from five selected banks in Tehran were chosen for this research. In order to examine and analyze the data, Structural Equation Modeling (SEM), Confirmatory Factor Analysis (CFA) and one-way Analysis of Variance (ANOVA) have been used. “Satisfaction”, “trust”, “loyalty” and “switching barriers” are considered as the main factors weakening “switching intention”. The findings confirmed that the variables of satisfaction, trust and loyalty have significant negative impacts on the switching intention, but the impact of the switching barriers on the switching intention in Iran banking was not significant. The present research has been conducted only on banking services industry and only in Tehran which reduces the generalizing effect of the study. Moreover, quantitative analysis methods were used in order to evaluate the subjective factors such as customer switching behavior.
A Magnetization Study of Prussian-blue Analogue Na x Mn y [Fe(CN) 6 ]

In this report, we present the results of a study on the effects of the particle size on the properties of the Prussian blue (PB) analog Na x Mn y [Fe(CN)? ]. A novel synthesis method of the Na x Mn y [Fe(CN)? ] nano-particles using an organic solvent, formamide, is employed. The size of the PB particles is found to be 100-150 ㎚ for the samples prepared in the formamide solvent, which is much smaller than that of the samples prepared using water only. The broadening of the X-ray diffraction peaks of the nano-sized PB samples is attributed to the lattice disorder and a dramatic reduction in the particle size. The compositions of the samples are confirmed by an energy-dispersive X-ray analysis (EDAX), and the result proves that the samples are actually Na x Mn y [Fe(CN)? ] Prussian blue. The UV-vis spectra show a broad intervalence charge-transfer (CT) band in the visible region between 400 and 700 ㎚, and the absorption decreases abruptly in the green region for the nano-sized PB sample. A divergence between the field cooled (FC) and zero field cooled (ZFC) magnetization curves is observed for the nano-sized PB sample at 11 K, indicating that nanoparticles in the sample are single domain superparamagnets with a blocking temperature of 11 K. Our results reveal that the nano-sized PB samples show significantly different optical and magnetic properties than those of the bulk PB samples.
Phytoextraction of lead by Indian mustard.

A screen house experiment was carried out with Brassica juncea grown on artificially spiked soil (200 µg Pb g−1) with EDTA (2 mmol kg−1 in 5 split doses), farm yard manure (FYM), vermicompost (VC) and microbial inoculants (Azotobacter sp. and Pseudomonas sp.) Results revealed that FYM and VC led to higher biomass production as compared to unamended soil. The bioinoculants also contributed in augmentation of biomass production but not significantly. The EDTA led to significant decrease in biomass as compared to FYM and VC. The Pb concentration increased significantly in Brassica juncea with the application of EDTA, the highest concentration of Pb being recorded in EDTA treatment. Among all the treatment combinations, EDTA and bio-inoculants combination led to higher uptake of Pb. The FYM and VC also increased uptake of Pb but much less than EDTA. The results indicated that EDTA in combination with bioinoculants was superior in enhancing the phytoextraction of Pb by Brassica juncea.
Explorer Real-time 3 D semi-local surface patch extraction using GPGPU

Feature vectors can be anything from simple surface normals to more complex feature descriptors. Feature extraction is important in order to solve various computer vision problems: e.g. registration, object recognition and scene understanding. Most of these techniques cannot be computed online due to their complexity and the context where they are applied. Therefore computing these features in real-time for many points in the scene is impossible. In this work a hardware-based implementation of 3D feature extraction and 3D object recognition is proposed in order to accelerate these methods and therefore the entire pipeline of RGBD based computer vision systems where such features are typically used. The use of a GPU as a General Purpose processor (GPGPU) can achieve considerable speed-ups compared with a CPU implementation. In this work advantageous results are obtained using the GPU to accelerate the computation of a 3D descriptor based on the calculation of 3D semi-local surface patches of partial views. This allows descriptor computation at several points of a scene in real-time. Benefits of the accelerated descriptor have been demonstrated in object recognition tasks. Source code will be made publicly available as contribution to the Open Source Point Cloud Library (PCL). The final publication is available at http://www.springer. com/alert/urltracking.do? id=L41fe935Mdd48a5Sb0d354a
Active Power Compensation in theInterconnected Power System by UsingDoubly Fed Induction Generator Based onWind Turbine

The active power compensation has become the major concern for the power system engineers. A small change in the active power flow gives negative impact on the entire power system parameters. As the electrical power system is the most complex man made structure, hence, it’s tough to maintain consistency though out the system, all day. To make the system stable proper monitoring is required or sometimes an auxiliary system can also be a good option, which can support the primary system during undesirable conditions. The recent developments indicate, for the electric power generation, wind energy forms are being utilized in a big way. These wind farms are not only playing vital role for the energy production but also contributing for the regulation of active and reactive power flow on the grid. This paper presents active power compensation of the grid with the help of Doubly Fed Induction Generator based on Wind Turbine. In this process, two converters are connected back to back, which are known as rotor side converter and grid side converter, have been used and the controlling of stator and rotor current can be achieved by the proper functioning of these two converters.
Boxing in Red Kangaroos, Macropos Rufus: Aggression or Play?

Fighting in a boxing style is the most spectacular behaviour of red kan- garoos, Macropus rufus, yet its structure and function have not been analysed in detail. Patterns of sparring, kicking and wrestling occur between mothers and young (espe- cially males), in formalized contests between males, and in escalated conflicts over resources (shelter, water, oestrous females). Observations were made of fighting behav- iour in free-living and captive individuals. The frequency of fighting between various age/sex classes in the field was determined and the structure of fighting over a water resource was analysed from a 12 h videotape record. These results were compared with an analysis of 85 videotaped plus 35 other fights observed in a captive group of eight males (age 1 - 7 year). These fights were formalized contests which did not involve or resolve any immediate conflict over a resource. Such fights share many of the proper- ties ascribed to play-fighting. They are initiated with invitational behaviour that does not include characteristic threat behaviour seen in fights over a resource. They involve self-handicapping, some lack ofdominance distinctions, and usually several bouts occur interrupted by mutual pauses. The structure of the fight suggests that the main goal is to push or wrestle the opponent off balance and down to the ground rather than inflict potentially injurious kicks as seen in resource conflicts. Furthermore larger opponents often adopt an inferior flat-footed stance and dominants and/or winners kick signifi- cantly less than losers. The context, goals and structure of these non-resource based fights suggest that they are a form of play-fighting. Selection of play partners on the basis of size/dominance or kinship indicate that such play-fighting in red kangaroos is neither truly cooperative nor disruptive and selfish. The behaviour most likely func- tions as a form of non-damaging assessment ofopponents with benefits in skill develop- ment in younger individuals. The red kangaroo Macropus rufus is a large grazing macropodid from the inland plains of the Australian arid zone. Males may attain body weights of 90 kg or more but females rarely exceed 35 kg. The mating system is one of hierarchical promiscuity (after Wittenberger, 1979), male competition for mates is intense and usually the largest male gains an exclusive consort relationship with an oestrous female (Croft, 1981). Popular mythology of kangaroo behaviour (e.g. Wil- liamson, 1978) would have it that a rival's disembowelment and death is a frequent consequence of male fights. However, death as a
HOW FAMILY INTERACTION PATTERNS INFLUENCE ENTREPRENEURIAL PROCESSES: INSIGHTS FROM THE HUTTERITES

We reengage the family science literature to develop a more complete and theoretically rich understanding of how social interaction can impact a multigenerational kinship family’s ability to develop novel solutions and products. In this pilot study we use the lens of symbolic interactionism to develop preliminary insights around how interactions can contribute to the development of solutions to problems and generation of novel new end products.
REPRESENTING THE PAIRWISE INTERSESSION NETWORK CODING BY HIGH LEVEL PETRI NETS

In this paper, we introduce a new approach to the pairwise inters- ession network coding, which depends on using high level Petri nets to represent the butterfly network, the grail network, all networks which represent an ex- pansion of the butterfly network and all networks which represent an expansion of the grail network, and use this representation to determine the solvability of the pairwise intersession network coding problem.
IMM based Augmented EKF for RF Seeker Filter

Radio frequency seeker filter design for homing guidance requirements are highly demanding and challenging. Seeker data is highly noisy and is characterized by correlation, non-guassian due to target glint and modulated by radar cross section fluctuations. Over and above there will be periodic data loss due to eclipsing. For generating smooth homing guidance commands an efficient filter having minimum lag and maximum seeker noise attenuation capability is required. This paper presents an interacting multiple model seeker filter with extended Kalman filter as mode-matched filter which operates in closed homing guidance loop to generate required guidance commands to intercept maneuvering air-breathing targets. The performance of the seeker filter is evaluated using simulation of different interceptor-target engagement scenarios with different target maneuver profiles.
STRENGTH CHARACTERISTICS OF MORTAR CONTAINING HIGH VOLUME METAKAOLIN AS CEMENT REPLACEMENT

This paper investigates the compressive strength, ultrasonic pulse velocity (UPV), and density for cement mortar containing high volume of metakaolin (MK) as partial substitution of cement. Portland cement (PC) was partially replaced with 0-50% MK. Mortar specimens were cured in water at 20°C for a