Miracle-dz/UniFAR-FTUs huggingface dataset:
Fostering student creativity and creative practice with assessment : a review of practice in a digital media course

This paper presents a brief outline of the context of digital media education within London Metropolitan University and offers a discussion of the role and nature of creativity within that curriculum. However, its focus is the nature of assessment methods currently used in the BA Digital Media and their capacity to assess student creativity and creative practice. Some implications for learning and teaching practice are presented.
DFENet for Domain Adaptation-Based Remote Sensing Scene Classification

Domain adaptation scene classification refers to the task of scene classification where the training set (called source domain) has different distributions from the test set (called target domain). Although remarkable results have been reported, the misalignment of source and target domain features still remains a big challenge when the large intraclass variances of remote sensing images encounter the insufficient exploration of discriminative feature representations for both domains. To address this challenge, a novel domain feature enhancement network (DFENet) is proposed to adaptively enhance the discriminative ability of the learned features for dealing with the domain variances of scene classification. Specifically, an adaptive context-aware feature refinement (CAFR) module is first designed to automatically recalibrate global and local features by explicitly modeling interdependencies between the channel and spatial for each domain. Then, a multilevel adversarial dropout (MAD) module is further designed to strengthen the generalization capability of our network by adaptively reconfiguring the sparsity of the feature level and decision level in the target domain. The cooperation of CAFR module and MAD module formulates a unique DFENet that can be learned in an end-to-end manner. Comprehensive experiments show that our proposed method is better than state-of-the-art methods on Merced <inline-formula> <tex-math notation="LaTeX">$\to $ </tex-math></inline-formula> RSSCN7, AID <inline-formula> <tex-math notation="LaTeX">$\to $ </tex-math></inline-formula> RSSCN7, NWPU <inline-formula> <tex-math notation="LaTeX">$\to $ </tex-math></inline-formula> RSSCN7, RSSCN7 <inline-formula> <tex-math notation="LaTeX">$\to $ </tex-math></inline-formula> Merced, RSSCN7 <inline-formula> <tex-math notation="LaTeX">$\to $ </tex-math></inline-formula> AID, and RSSCN7 <inline-formula> <tex-math notation="LaTeX">$\to $ </tex-math></inline-formula> NWPU datasets.
Electrical aging of stator insulation of low voltage rotating machines supplied by inverters

Nowadays, the use of inverters for speed variation of low voltage motors has become more and more common. The most common technology for this kind of apparatus uses pulse width modulation (PWM). It is characterized by a square voltage shape with short rise and fall times. In order to insure the quality of turn to ground insulation submitted to these constraints, a study on the aging of polyethylene terephthalate (Mylar/sup TM/) has been undertaken. Influence of rise and fall times, frequency and voltage magnitude has been investigated for time duration up to 1000 hours. To realize a good voltage application, samples were previously metalized. Two different behaviors according to the rise time and magnitude are observed. For long rise and fall times, changes in the capacity values are obtained although, for smaller rise or fall times, a degradation of the metalized electrode appears. A surface charge generation process is discussed to explain this phenomena.
Low-Cost Carriers and High-Tech Barriers: User Views on Questionable Web Design Practices in Ireland

That information systems/information technology (IS/IT) practitioners should use best practice in information systems development is universally agreed. We expect systems to enhance the user experience and allow them to engage in a satisfying, productive interaction. This paper posits all is not well with this hypothesis and suggests many fi rms in the low-cost carrier (LCC) sector are using web technologies to inhibit or avoid customer service and to construct IS-enabled barriers behind which fi rms profi t from their distance. The emergence of the LCC model is explored before a study is presented that scrutinises LCC web practices. Participants were found to be wary in online interactions and cynical about problematic or omitted features. Teaching of good practice is suggested and improved ethics in IS design is merited.
Reduction in Arsenic Exposure by Domestic Water Purification Devices in Shanghai Area and Related Health Risk Assessment

Domestic water purification devices (point-of-use) are important choices for people to deal with sudden drinking water contamination. Especially for sudden heavy metal and arsenic contamination, home water purification units can play a key role as a secondary line of defense. Most of the arsenic removal studies are limited to meeting the requirements of local water quality standards and few studies have been conducted on arsenic removal from household water purifiers. In this paper, the distribution characteristics of arsenic in water at the end of the pipeline network in the Shanghai water supply area have been investigated. Three types of household water purifiers, mainly with membrane separation technology, were selected to treat the simulated arsenic contamination in tap water sources. The effects of pH and inorganic salts on arsenic removal were studied in comparison to the results of coexisting ion concentrations in tap water. The results showed that the total arsenic concentrations in different tap water samples range from 0.479–1.195 µg L−1, which is lower than the limit value for arsenic concentration set by China’s drinking water standard GB 5749–2006 (10 µg L−1) and by the World Health Organization (10 µg L−1). It is found that reverse osmosis and nanofiltration water purifiers were more effective in removing As(V), with removal rate above 97.7%, and less effective in removing As(III), the rate ranging from 40.1 to 56.3%. Preliminary validation was provided for the safety of household water purifiers in securing universal and sudden drinking water contamination. Domestic water purifiers are effective in reducing the risk of arsenic exposure in drinking water.
Urban regeneration featuring environmental quality, the management of resources and social cohesion

This scientific project – developed over the past two years by Sapienza University’s PDTA in Rome, in partnership with the Technische Universitat Munchen, funded by the German DAAD – took as its starting point the differences between the buildings found in the consolidated/ historic city’s districts and the city’s continually evolving environmental, energy, technological, functional and social needs, creating urban situations where it becomes clear that it is not enough to regenerate individual buildings in environments that are gradually changing; rather it is necessary to take action on districts and widespread city clusters. The pilot case studied was the regeneration of two districts that were part of consolidated, yet neglected, areas in the city of Rome, the result was mainly geared towards determining the level of transferability of the results of this experiment.
MOS transistor modelling using neural network

A new application of the artificial neural network (ANN) is proposed. It is used for balck-box modelling of electronic devices. The power of ANNs used as a realisation of a mapping algorithm is demonstrated on the MOS transistor modelling paradigm. A unique continuous function is used to cover all regions of transistor operation.
An FFT-based novel approach to noninvasive speed measurement in induction motor drives

A novel sensorless speed detection method based on the fast Fourier transform (FFT) spectral analysis is described. The main concern is the extraction of the speed information contained in the rotor slot-ripple harmonics created in the airgap of the induction motor using digital signal-processing techniques. A nonintrusive all-digital speed detector suitable for steady-state operation has been designed around an Intel/80386-based microcomputer equipped with a 80387 coprocessor. The detector performance with and without load over a wide range of speeds is described. >
Tracking the material cycle of Italian bricks with the aid of building information modeling

Clay brick masonry is a vernacular construction technique; it continues to be used extensively in Italy and elsewhere. Despite the essential role clay bricks play in construction, they are often overlooked in the environmental literature, and sound production data are hard to obtain. This study integrates material flow analysis (MFA) and building information modeling (BIM) to assess the quantity and use cases of clay bricks and terracotta tiles used for construction in Italy. Material flows for these products were traced from the supply of raw materials to manufacturing, use, demolition, and waste management in Italy in 2006, 2011, and 2016. 3D representations of typical buildings were drawn in BIM and used to create material intensities to investigate functional uses of bricks. Hollow bricks used as infills in external walls and load‐bearing bricks were the main products manufactured in all three years of analysis, followed by bricks used in internal walls and floor‐forming bricks. In all cases, maintenance and refurbishment of existing buildings was the primary end‐use category. From 2006 to 2016, the Italian brick production shrank fourfold, from 20.6 Tg to 5.1 Tg, while direct carbon dioxide emissions from the calcination of calcium carbonate decreased from 2.4 Tg to 0.5 Tg. Functional recycling is rare, and this poses serious challenges to the circularity of the construction sector. The results demonstrate that the integration of MFA and BIM approaches markedly improves the detail, speed, and realism of quantifying the material flows within the urban environment. This article met the requirements for a Gold‐Gold JIE data openness badge described at http://jie.click/badges.
Heritability and heterosis of agronomical characteristics, yield and yield components of sweet and super sweet corn (Zea mays L.) genotypes

Sweet corn (Zea mays L.Saccharata) is one of the most popular vegetable in the world. This experiment was carried out in the agricultural and natural resources research center of Khorasan-Razavi, Mashhad, Iran during 2013-2014. A randomized complete block design with three replications was conducted in order to investigate the heritability of sweet and super sweet corn quantitative characteristics in 37 sweet corn inbred lines and hybrids. The genotypes were consisted of 13 inbred lines, 17 promising hybrids and 7 new commercial sweet and super sweet corn varietal. Plant height, ear length, ear diameter, kernel depth, row per ear, kernel per row and kernel yield was measured. Heterosis evaluated by combining parental data. Analysis of variance showed that there were significant differences between all studied genotypes except plant height, ear length, kernel depth, kernel number per eat, row per ear and kernel yield. Genetic diversity resulted in variation between hybrids and inbred lines.The highest and lowest conservable grain yield produced by Passion (12.5 ton/ha) and Harvest gold (0.32 ton/ha) respectively. Broad sense heritability ranged between 64% and 85%, for kernel depth and kernel yield, respectively. Results showed that hybrids which one of their parental line was Chase, Basin or temptation produced higher yield, kernel depth, kernel per row, row per ear and plant height than the other genotypes.
Mixed strategy for power grid resilience enhancement under cyberattack

ABSTRACT Power infrastructure networks continue to be at risk under natural and anthropogenic hazard events. Cyberattacks targeting power grids aim at magnifying the impacts through damage propagation to other dependent infrastructure network. In this respect, the current study focuses on the “draw-down” phase of power infrastructure network resilience considering different centrality measures to evaluate the robustness of power grids against cyberattacks. The study considers two network representations for the grid based on the network’s topological/connectivity (i.e., unweighted network) and the network’s power flow data (i.e., weighted network). Therefore, the study utilizes the evaluated measures to improve network robustness under cyberattacks, through considering (or not) the proposed mixed strategy. Based on the analyses, network-level vulnerability is quantified considering five different scenarios through evaluating two key performance metrics—Topology and Functionality indices. Nonetheless, applying the proposed mixed strategy to limit the attacker’s access to the network hubs would boost the overall grid robustness.
The comparative study of optical fiber coupling scheme in pigtailing of semiconductor optical amplifiers

In this paper we present analysis on three different coupling systems, i.e., butt, single ball lens, and two ball lenses between the tips of two coupled single mode fiber in semiconductor optical amplifier (SOA) module. The coupling components inside the module can be aligned in an active alignment process and attached by means of dual beam from an Nd: YAG laser welding system. The tips of the coupled fiber are ferruled inside metallic tubes to enable the attachment to the substrates through saddle-shaped welding clips. Investigations of the variations of coupling efficiency with the with working distance for the three schemes showed that two ball lenses is more efficient with coupling efficiency of 75% followed by single ball lens at 55% and butt coupling mode at 20% maximum. In addition dual ball lens configuration have shown to have better longitudinal tolerant even with an elliptical beam profile from the source fiber. This is however not the case in single ball lens and butt coupling scheme. We also observe however the optimum separation between the two lenses at in the range between 0.35 mm - 0.45 mm. This is to ensure the coupling efficiency is the highest possible within the acceptable tolerant misalignments.
Framework for coordinating multiple robots in cooperative manipulation tasks

In this paper, we describe a framework for coordinating multiple robots in the execution of a cooperative manipulation task. The coordination is distributed among the robots that use modular, hybrid controllers in order to execute the task. Different plans and models of the environment are built using a mix of global and local information and can be shared by the team members using wireless communication. Our framework uses models and metrics of computation, control, sensing and information in order to dynamically assign roles to the robots, and define the most suitable control hierarchy given the requirements of the task and characteristics of the robots. To test our framework, we have developed a object oriented simulator that allows the user to create different types of robots, to define different environments and to specify various types of control algorithms and communication protocols. Using the simulator, we have been able to test the execution of this task in different scenarios with different numbers of robots. We can verify the efficacy of the robot controllers, the effects of different parameters on the system performance and the ability of the robots to adapt to changes in the environment. Results from experiments with two real robots and with the simulator are used to explore the multi-robot coordination in a cooperative manipulation task.
DISPERSION COMPENSATION USING ELECTRONIC METHODS BROADCASTING SYSTEM

System distortions due to chromatic dispersion (CD), polarization mode dispersion (PMD), laser phase noise and fiber nonlinearities have a significant impact on the performance of high-speed fiber optic networks. In connection with the need to improve the quality of information transmission in high-speed fiber-optic communication systems, coherent detection with a digital signal processing unit is of particular interest. The main goal of the DSP block is to reduce the impact of linear and nonlinear effects that degrade the quality of information transfer. In this direction, the use of adaptive filters with adaptation algorithms for filter coefficients plays an important role. The Constant Modulus Algorithm (CMA) and the Least Mean Square (LMS) method used to compensate for dispersion distortions are presented. The load on transport networks based on fiber-optic transmission systems is increasing at an accelerating rate. This paper discusses the possibility and limitations of increasing the throughput of fiber-optic transmission systems by reducing the distance between carriers. A comparison is made between fixed and flexible grids in terms of the spectral bandwidth efficiency. It is concluded that the use of flexible mesh technology is promising when switching to channel speeds above 100 Gbit/s.
A Novel Synchronous Rectifier Driving Scheme for LLC Converter Based on Secondary Rectification Current Emulation

In conventional synchronous rectifier (SR) driving schemes, the drain to source voltage of SR is detected to generate its driving signal. However, the driving signal by this method will lose a portion of duty cycle due to the parasitic inductance in SR package and on-board parasitic inductance. This phenomenon is severe under heavy load and deteriorates the efficiency of the converter. In this article, a novel LLC SR driving scheme based on secondary rectification current emulation is proposed. An auxiliary winding of the transformer and an auxiliary winding of the resonant inductor located on the secondary side are in series to generate a superposed voltage signal. The secondary rectification current is emulated out according to the superposed voltage signal by an integration circuit. After that the SR driving signal, which is not affected by parasitic inductance, is generated with a logic circuit. Detailed theoretical analysis and circuit implementation have been presented. Finally, a 400 V input and 12 V/20 A output half-bridge LLC resonant converter prototype has been built up to verify the feasibility of the proposed SR driving scheme.
Adaptive protection scheme for smart grids

The amount of distributed generation (DG) connected to distribution networks is increasing. This can cause challenges for traditional protection of distribution networks due to bidirectional power flows, fault current contribution of DG units and grid code fault-ride-through (FRT) requirements. During the normal, parallel with utility grid, operation, the protection coordination may be compromised and nuisance or delayed tripping may be experienced. After possible transition to intended island operation the situation becomes even more demanding from protection point of view due to low short-circuit currents fed by DG units and sensitive dynamics. Therefore, protection adaptation to different topology changes will be more and more often required in the future distribution networks. This paper evaluates the performance of different protection methods in grid connected and in controlled island operation modes of a part of medium voltage network. The evaluation is done with PSCAD simulation software for an example network. Finally, an adaptive protection scheme for smart grids is proposed.
Predictive controller design for flexible link manipulator

The manipulating system of modern high-speed industrial robot may often contain the links with lowered mechanical rigidity. As the result, such a manipulating system possesses the increased level of vibrations and link's deformations under it's own weight and load. This leads to additional trajectory control and positioning error of the manipulator arm. So the control of flexible links manipulator is a complex problem. The control algorithm for the flexible link manipulator is offered for further explores. The algorithm is build with the use of model predictive control technique.
A study of the handset antenna and human body interaction

The antenna radiation pattern and other characteristics are significantly altered by the presence of the human body. This interaction as well as the resultant deposition of microwave power in the body (specific absorption rate-SAR) are of particular interest for cellular telephones and similar communication devices. This paper builds on and extends the previous analyses of parameters that influence the antenna-user interaction. Computer tomography (CT) and magnetic resonance imaging (MRI)-derived, high-resolution models of the human head are used. The numerical analysis is performed with the finite-difference time-domain (FDTD) method. The specific findings are: 1) a box model of a human head provides grossly distorted and unreliable results for the antenna radiation pattern; 2) a spherical model of the human head provides results that are relatively close to those obtained with a relatively simple, but more realistic, head model; 3) the SAR values obtained with spherical or simplified head models, that do not include the ear, are greater than those for a realistic head model that includes the ear; and 4) a hand holding the handset absorbs significant amount of antenna output power, which can be considerably decreased by modifying the geometry of the handset metal box.
P-7: High Speed a-IGZO TFT-based Gate Driver by using Back Channel Etched Structure

We demonstrated the high performance back–channel-etched (BCE) amorphous-InGaZnO (a-IGZO) thin-film transistor (TFT) circuits. The TFTs exhibited the field-effect mobility, turn-on voltage and subthreshold swing of 18 cm2/V•s, -0.1 V, and 258 mV/dec, respectively. The oscillation frequency of an 11 stages ring-oscillator is ~334.1 kHz, at VDD = 20 V. The 320 stages 11T2C shift-register operated well up to the last stage with rising and falling times of 950 and 690 ns, respectively. Good performance is attributed to damage-free back channel wet etch process and small overlap capacitance between the gate and source/drain electrodes.
Tan ggap Fisiologi Akar Sorgum (Sorghum bicolor L. Moench) terhadap Cekaman Aluminium dan Defi siensi Fosfor di dalam Rhizotron Roots Physiological Response of Sorghum (Sorghum bicolor L. Moench) to Aluminum Toxicity and Phosphorous Defi ciencies in Rhizotron

A s tudy on physiological mechanism of sor ghum to aluminum (Al) toxicity and phosphorous (P) defi ciencies was conducted using several sorghum genotypes in rhizotron. The study was conducted in the greenhouse of the University Farm, Bogor Agricultural University from August to October 2009. The experiment was carried out as a Factorial experiment in a Completely Randomized Design with three replications. The fi rst factor was sorghum genotypes consisted of Numbu (tolerant) and B-75 (sensitive), and the second factor was combination of lime and phosphorous fertilization consisted of: no lime-no P (R1), no lime-low P (R2), no lime-suffi cient P (R3), lime-no P (R4), lime-low P (R5) and lime-suffi cient P (R6). The results showed that all variables were signifi cantly affected by the interaction of media and genotype, except for length of shoot and total P uptake. Under low P and Al toxicity, sorghum variety Numbu showed a higher nutrient effi ciency than B-75 with ability of forming greater dry mass. The sensitive genotypes showed a higher nutrient uptake but a lower P nutrient use effi ciency under Al toxicity and P defi c iency. Total P uptake and P nutrient use effi ciency were highly correlated with root growth and dry material accumulation.