Miracle-dz/UniFAR-FTUs huggingface dataset:
A Novel Dual-Layer PM Variable Flux Hybrid Memory Machine

This paper proposes a novel variable flux hybrid memory machine (VF-HMM) having low-coercive-force (LCF) and NdFeB PMs placed in two layers. The developed machine can be geometrically derived from a conventional VF-HMM with series PM configuration, but the two sets of PMs within one pole are separated into two layers. In the proposed design, a bypass circuit branch for $\boldsymbol{d}$-axis magnetizing magneto-motive-force (MMF) is designed. This can reduce the required magnetizing current level and inverter rating, which are recognized as the major challenges in the existing series VF-HMMs. Meanwhile, the advantages of on-load demagnetization withstand capability of LCF PMs and the effective reluctance torque utilization in the conventional series VF-HMM can be maintained. The machine topology and features are introduced and addressed, respectively. Then, various possibilities of the machine structures with various available magnet arrangements are presented and compared. Besides, the electromagnetic characteristics of the selected dual-layer VF-HMM model are investigated and compared with those of the conventional counterpart.
Substrate Integrated Waveguide Filter with Higher-Order Modes Suppression

In this paper, two methods to suppress the higherorder modes in substrate integrated waveguide (SIW) cavity are proposed. One is to use double coupling irises instead of single iris between two cavities, which prevents the $\mathbf{TE}_{\pmb{301}}$ mode from being excited effectively. The other is to etch narrow slots on the metallic plate of cavities, which destroys the TE102mode. The theories of suppression are analyzed and the simulation results are also presented. In order to verify the methods, a SIW filter with the center frequency of 20 GHz is designed. The measurements show that the first spurious appears at about 50 GHz, which is 2.5 times of the center frequency.
Scrollytelling – An Analysis of Visual Storytelling in Online Journalism

Scrollytelling – the long-form of articles used in journalism – uses long, narrative types of text (e.g., report, feature) to tell complex stories. Scrollytelling articles published online often use multimedia content, especially information graphics which is a powerful tool to communicate complex information. This study investigates which types of infographics are used for visualizing complex data in long-form journalism published online. The analysis focusses on the utilization of infographics in scrollytelling and how infographics are integrated in long-form articles.
An adaptive transmission algorithm for an inertial motion capture system in the aspect of energy saving

The article presents a tested, integrated architecture of a single sensor network node with an algorithm that has allowed to reduce power consumption, without limiting the ability to process data from a multi-axis MEMS sensor. In the experiment described in the article, the energy efficiency of the sensor module has been increased by 64%. By using the SoC chip system, the printed circuits (PCB) of the sensor module have been reduced to 26 mm × 16 mm. In turn, the use of the Modem Sleep mechanism has allowed for effective feeding of the developed sensor module by means of a battery with 175 mAh capacity whose dimensions do not exceed the size of PCB.
Estimation of Coastal Inundation Area by Typhoon-Induced Surges

As a part of risk assessment to the coastal inundation, the coastal inundation area was estimated by adopting a simple bathtub approach based on numerically obtained typhoon-induced surges from the model SLOSH (Sea, Lake, and overland Surges from Hurricanes) in southern coastal city of South Korea and digital elevation map (DEM) from National Geographic Information Institute of Ministry of Land, Infrastructure and Transport. The typhoon-induced surge heights were firstly computed while the historical typhoon MAEMI(2003) is approaching. The coastal inundation area is estimated by comparing the maximum envelop of waves (MEOW) and the elevation of land with zero-side rule (i.e. the simple bathtub approach). Comparing the inundation result to the observation data, their shapes of inundation are similar. This research mainly gained applicability of these estimating methods for estimating further potential coastal inundation.
Fast 2-D Direction of Arrival Estimation Using Two-Stage Gridless Compressive Sensing

In this study, we propose and demonstrate a two-dimensional direction of arrival estimation method based on gridless compressive sensing (CS). The method is based on a gridless covariance fitting technique to alleviate the well-known grid mismatch problem of compressive sensing. Classical methods of gridless compressive sensing are limited to 1-D arrays, while extensions to multidimensional arrays are computationally demanding. To overcome these limitations, we introduce a two-stage solution with an angle-pairing matching pursuit algorithm, which enables 2-D arrays with lower computational complexity. We validate the method via numerical experiments on a cross-shaped generic array, then we compare the results with those of widely used methods such as MUSIC and beamforming.
Development of a Robotic Lower-Limb Exoskeleton for Gait Rehabilitation: AGoRA Exoskeleton

Stroke significantly affects millions of individuals around the world every year, leading to considerable physical impairment and serious long-term disability. Gait is one of the most important daily-life activities affected in stroke victims. The development of an ambulatory lower-limb exoskeleton intended for use in stroke survivors is presented in this paper. It is envisioned as an actuated device in the sagittal plane, capable of producing the necessary torque to move the hip, knee and ankle joints (this latter by means of a variable-stiffness ankle-foot orthosis). An additional passive add/abduction degree of freedom at the hip joint is included, as a way to improve walking balance. A control approach for the actuated joints, which aims to assist the subject only when needed, is also proposed. The main goal of this assistive device is to promote the early incorporation of stroke patients with mobility impairments to a feasible rehabilitation treatment. Such device opens the possibility to study means that might optimize conventional rehabilitation treatment.
Screen Orientation Aware DRAM Architecture for Mobile Video and Graphic Applications

The state-of-the-art mobile image and graphic applications demand not only a lot of computing power, but also high-quality memory services. Moreover, depending on the screen orientations of mobile systems, image and graphic data can be accessed in a complicated manner. Since conventional dynamic random access memories (DRAMs) do not provide successive image and graphic pixels on the same column address, however, they achieve extremely poor throughput, long latency, and high power consumption in any screen orientation of mobile systems. This paper presents a novel DRAM efficient for both portrait and landscape screen orientations of mobile systems. We develop a simple, but effective two-transistor, one-capacitor memory cell that can be activated not only by a row activation command like a conventional DRAM memory cell, but also by a new column activation command. Next, the proposed DRAM architecture makes all the new memory cells on the same row address, or the same column address successively accessed. Finally, new DRAM commands and operations that are completely compatible with the conventional DRAMs are presented. Experimental results show that the proposed DRAM has 3.6% larger area, but achieves 5.8% higher memory utilization, and 14.8% shorter memory latency, on average. In addition, it consumes 4.4% less memory power than the conventional DRAM, on average.
Supplementation of whole grain flaxseeds (Linum usitatissimum) along with high cholesterol diet and its effect on hyperlipidemia and initiated atherosclerosis in Wistar albino male rats

Background and Aim: Flaxseeds are known to have varying antihypercholesterolemic and antiatherogenic activity due to its lignan secoisolariciresinol diglucoside, alpha-linolenic acid, and omega-3 fatty acids. The beneficial effect of whole grain dietary flaxseed was evaluated experimentally in high cholesterol diet (HCD)-fed Wistar albino rats. Materials and Methods: Male Wistar albino rats (200 g) were divided into four groups of 12 rats each. Group I rats kept as control and given basal rat chew diet, Group II as positive control for induction of hypercholesterolemia and atherosclerosis by addition of 1% cholesterol and 15% saturated edible oil to the 1000 g of standard rat chew diet (HCD), Group III rats fed with whole grain flaxseed powder at 7.5 g/kg of rat/day in the standard rat chew diet and kept as flaxseed control, and Group IV rats supplemented with flaxseed at 7.5 g/kg of rat/day along with HCD and maintained for 90 days. Results: Group II rats revealed significantly (p<0.05) higher total cholesterol (TC), triglycerides (TG), low-density lipoprotein cholesterol (LDL-C), and very LDL-C and significantly (p<0.05) reduced levels of high-density lipoprotein cholesterol (HDL-C), whereas tissue antioxidants such as catalase, superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione reductase (GR), and glutathione S transferase (GST) were significantly (p<0.05) reduced, and lipid peroxidation products of thiobarbituric acid reactive substances (TBARS) level were nonsignificantly (p<0.05) increased in the heart and liver tissues. Flaxseeds supplementation along with HCD significantly ameliorated the serum levels of TC, TG, LDL-C, and HDL-C along with cellular antioxidant enzymes such as catalase, SOD, GPx, GR, GST, and non-significant amelioration of TBARS in the heart and liver tissues compared to Group II rats. Majority of the histopathologically initiated atherosclerotic changes in the aorta and fatty change in the liver of Group II were not observed in the flaxseed supplemented Group IV; however, interestingly proliferation of endothelial cells with new vascular channel formation in the liver and in between cardiac muscle fibers was observed in Group I and Group IV rats. Conclusion: The present study established the hypercholesterolemia with initiated atherosclerotic lesion in the aorta but unable to establish the atheromatous plaque in the aorta. Flaxseed supplementation along with HCD showed significant antihypercholesterolemic effect and ameliorated the changes of initiated atherosclerosis in the aorta. It needs further studies to explore all the possible beneficial effects and angiogenic properties of flaxseeds in the laboratory animals and human trials.
Spliceosome factors target timeless (tim) mRNA to control clock protein accumulation and circadian behavior in Drosophila

Transcription-translation feedback loops that comprise eukaryotic circadian clocks rely upon temporal delays that separate the phase of active transcription of clock genes, such as Drosophila period (per) and timeless (tim), from negative feedback by the two proteins. However, our understanding of the mechanisms involved is incomplete. Through an RNA interference screen, we found that pre-mRNA processing 4 (PRP4) kinase, a component of the U4/U5.U6 triple small nuclear ribonucleoprotein (tri-snRNP) spliceosome, and other tri-snRNP components regulate cycling of the molecular clock as well as rest:activity rhythms. Unbiased RNA-Sequencing uncovered an alternatively spliced intron in tim whose increased retention upon prp4 downregulation leads to decreased TIM levels. We demonstrate that the splicing of tim is rhythmic with a phase that parallels delayed accumulation of the protein in a 24 hr cycle. We propose that alternative splicing constitutes an important clock mechanism for delaying the daily accumulation of clock proteins, and thereby negative feedback by them. Editorial note: This article has been through an editorial process in which the authors decide how to respond to the issues raised during peer review. The Reviewing Editor's assessment is that all the issues have been addressed (see decision letter).
C-Band High Efficiency GaN HEMT Power Amplifier with Harmonic Tuning

In this paper, the design and measurements of a 5-6GHz high-efficiency MMIC high power amplifier implemented in a $\mathbf{0.25}\mu\mathbf{m}$ GaN HEMT process was described. The MMIC has been designed using 2-stage topology. At 5-6GHz, the MMIC showed a power-added efficiency (PAE) of 44%-52% with an associated gain over 20dBm and an output power of 35dBm. The MMIC achieved above 50% PAE at 5.3-5.6GHz. The key to this design is determining and matching the optimum source and load impedance for PAE at the first three harmonics in output stage in order to improve the PAE.
Analysis of Kinematic Model Effects on SAR ECM

Spotlight synthetic aperture radar (SAR) provides a high-resolution remote image- formation capability for airborne platforms. SAR image formation processes exploit the amplitude, time, and frequency shifts that occur in the transmitted wave- form due to electromagnetic propagation and scattering. These shifts are predictable through the SAR forward model which is dependent on the waveform parameters and emitter flight path. The approach to develop an electronic countermeasure (ECM) system that is founded on the SAR forward model implies that the ECM system should alter the radars waveform in a manner that produces the same amplitude, time, and frequency shifts that a real scatterer would produce at a desired location. A collection of such scatterers would be capable of forming a larger collective energy distribution in the final image. However, since the forward model is dependent on the radar platform’s kinematic model, the jamming energy distribution created from a forward-model based ECM system will inherently have some level of sensitivity to kinematic error. This work uses an entropy- based image similarity metric and defined-accuracy Monte Carlo simulations in order to assess the effect of the kinematic model on the resultant jamming energy distribution.
Towards Sensor Failure Detection in Ambient Assisted Living: Sensors Correlations

Ambient Assisted Living promotes healthy independent ageing of the elderly at their homes by monitoring their behaviour, and support medical assistance whenever needed. For privacy and acceptance issues, non-intrusive sensors are preferably used. However, such sensors are more prone to produce false positive or negative data. Faulty sensor data could be automatically detected if correlations between sensors can be identified. This paper aims to propose the use of association rule mining to find correlations between binary event-driven sensors installed for monitoring purposes in an apartment. A case study was carried out to validate the approach and investigate the effect of different data mining parameters on the quality of obtained association rules. The results show that correlations could be successfully deduced from unlabelled datasets with no prior expert knowledge on the sensors topology.
Design of Ku-Band Low Phase Noise Oscillator Utilizing High-Q Air-Filled Substrate Integrated Waveguide Resonator

In this paper, a high-Q factor air-filled substrate integrated waveguide (AFSIW) resonator is firstly applied to the design of Ku-band low phase noise planar oscillator. The AFSIW resonator utilizes air-filled substrate to replace the dielectric-filled substrate. It can reduce loss, and realize higher quality factor than the conventional substrate integrated waveguide(SIW) resonator. The air-filled part of the AFSIW is covered by two metallic covers or two plated substrates, which can be integrated with other planar circuits and active devices easily. Therefore, taking the proposed AFSIW resonator as frequency stabilization element, microwave planar oscillator can realize excellent phase noise performance. To validate the proposed method, a Ku-band low phase noise planar oscillator based on AFSIW is firstly designed and measured. The results show that the oscillator operates at 14.84GHz with −5.9dBm output power. The measured phase noise and the calculated figure of merit(FOM) of the oscillator are −128.3dBc/Hz and −198.7dBc/Hz at 1MHz offset carrier frequency, respectively.
FPGA Implementation of BLDC Motor Driver with Hall Sensor Feedback

The difficulty in designing the control drivers for BLDC (BrushLess Direct Current) motors occurs when the positioning of the HALL sensors on stator circumference is not known. This paper describes the original hardware design and implementation of a control driver for BLDC motors with HALL positioning sensors by using a development board with Xilinx Spartan 6 FPGA (Field Programmable Gate Array) chip. Inside the FPGA chip, the control logic for the external power driver was implemented at the schematic level, which provides additional optimization possibilities as opposed to a hardware description language. The results were experimentally validated by testing the physical implementation.
MCDC-Star: A White-Box Based Automated Test Generation for High MC/DC Coverage

The US Federal Aviation Administration requires complete modified condition/decision coverage (MC/DC) for the most critical (level A) software. Complete MC/DC is a gold standard for thoroughness of testing. However, it is challenging to generate test cases to achieve high MC/DC as it requires testers to manually conduct complex control flow analysis. In this paper, we propose MCDC-Star, a white-box based automated test case generation technique for achieving high MC/DC coverage criterion using greedy-based symbolic execution. By analyzing the control-flow of the subject program, MCDC-Star generates test cases that can improve the MC/DC efficiently and effectively. An experiment using three industrial programs was conducted, and the results show its high effectiveness and efficiency.
Cloud Based Mobile Services in Academic Environment

Wireless technology progress in combination with widespread use of mobile devices, has facilitated to provide effective and efficient services in many domains such as health, transport, commerce, government, education, etc. However, the efficiency of existing infrastructure remains low due to miss-understanding of the user needs and resources. The goal of this paper is to identify and categories mobile services in educational environment taking into consideration the use of shared services as cloud computing and cellular communication technologies. Interaction and integration of existing technologies and exploitation of intelligent methods provide mobile services to satisfy the requirements of faculties, administrators, staffs, students and other users in academic environment properly. In this paper, the primary focus is on services for students’ needs; then capabilities of cloud computing or wireless technologies that could be used for implementing of these services were denoted. Finally, the challenges of cloud computing usage for academic areas were denoted.
Grasping, manipulation, and control with tactile sensing

Preliminary experiments are presented concerning the use of tactile sensing to enhance the flexibility and robustness of robotic manipulation. A simple two-fingered manipulator with very clean dynamics has been constructed to focus on tactile and force sensing in manipulation. Manipulation is characterized by constantly changing mechanical systems, as fingers make or break contact or start to roll or slide on the surface of a grasped object. It is important to detect these changes since control schemes must change to match the varying task requirements. Following the human model, it is shown that dynamic tactile sensors can reliably detect the changing contact conditions. In a simple grasp-lift-replace task, use of these sensors enables the manipulator to cope with uncertainty in object location and task forces. <<ETX>>
Conceptual Mechanism Software Defined Network Topology in Multiprotocol Label Switching Network Domain

Multiprotocol Label Switching (MPLS) offers a data-transportation mechanism with a wide-range of alternatives towards the varying, complicated networking procedures and serves as a reliable broad-band technique. While it enhanced the performance of packet forwarding by the use of fast label-switching, however; among the issues that come with the inherited connection-oriented architecture of MPLS are reliability and fault-tolerance. Failure management is one of the fundamental instruments that allow network operators to provide communication services that are much more reliable than the individual network components (nodes and links). In this study, we present a multi-objective, fault tolerant model for MPLS network design problems utilizing a Software Defined Networks (SDN) paradigm by introducing a Bicriteria Direct Algorithm known as Maximum Flow under Minimum Cost algorithm model. This paradigm uses the OpenFlow control management plane to design a survivable model in MPLS that will reroute traffic along optimal paths in the case of link failures. This implementation maintains and ensures a continuous network functionality that aims to resolve the shortcomings of the typical inherited connection-oriented design of MPLS networks. This approach achieves faster recovery time compared to traditional MPLS networks, while attaining optimal Fast Re-Routing technique following link or node failure scenarios.
Design and Implementation of a Student Attendance System Using Iris Biometric Recognition

Attendance taking is a standard practice in every educational system. The methods used to take class attendance are quite numerous but emphasis keeps shifting towards automating the process. The use of biometrics in taking class attendance is fast gaining ground and the traditional way of taking attendance is fast losing ground especially when the class is very large and time is of great essence. The iris was used as the biometric in this paper. After enrolling all attendees by storing their particulars along with their unique iris template, the designed system automatically took class attendance by capturing the eye image of each attendee, recognizing their iris, and searching for a match in the created database. The designed prototype is also web based. This paper proposes an alternative and accurate method of taking attendance that is both spoofproof and relatively cheap to implement.
Integration of ChronoView with Pseudo MDS for Visualization of Temporal Data

In several fields handling event data, exploring periodicity and similarity of the occurrence times of events is an important task. When we analyze event data, we often focus on temporal features of event groups, periodic features of events, and similarity of temporal features among event groups. This paper illustrates a visualization method to efficiently observe such features for multiple events. The method represents the temporal features of each event group with a glyph and represents the periodic features and their similarity with an arrangement of glyphs. To determine an arrangement of glyphs, a ChronoView graph representing periodic features of event groups is integrated with pseudo multidimensional scaling (MDS) in a 3D space. This paper also demonstrates the effectiveness of the visualization method for temporal data analysis with a use case exploring significant events from an actual dataset.