Miracle-dz/UniFAR-FTUs huggingface dataset:
-Band Multiport Substrate-Integrated

Millimeter-wave passive circuits that are designed and fabricated in the form of substrate-integrated waveguide (SIW) are presented in this paper. A -band SIW 90 hybrid coupler and multiport SIW circuit are made and synthesized on alumina substrate using metallized slot arrays. In order to connect the SIW circuits with WR-10 standard rectangular waveguides for measurement purposes, a new transition is also proposed and developed. Such millimeter-wave integrated passive circuits are developed for applications in radar sensors operating at 94 GHz. Performances of these circuits are evaluated and discussed on the basis of a series of -parameter simulations and measurements. Excellent agreement between simulated and measured results is observed. Index Terms—Millimeter-wave technology, passive circuits, sub- strate-integrated waveguide (SIW), waveguide transition.
EXPERIMENTAL HEAT TRANSFER AND FRICTION IN CHANNELS ROUGHENED WITH ANGLED, V-SHAPED AND DISCRETE RIBS ON TWO OPPOSITE WALLS

Experimental investigations have shown that the enhancement in heat transfer coefficients for air flow in a channel roughened with angled ribs is on the average higher than that roughened with 90° ribs of the same geometry. Secondary flows generated by the angled ribs are believed to be responsible for these higher heat transfer coefficients. These secondary flows also create a spanwise variation in heat transfer coefficient on the roughened wall with high levels of heat transfer coefficient at one end of the rib and low levels at the other end. In an effort to basically double the area of high heat transfer coefficients, the angled rib is broken at the center to form a V-shape rib and tests are conducted to investigate the resulting heat transfer coefficients and friction factors. Three different square rib geometries, corresponding to blockage ratios of 0.083, 0.125 and 0.167, with a fixed pitch-to-height ratio of 10, mounted on two opposite walls of a square channel in a staggered configuration are tested in a stationary channel for 5000 < Re < 30000. Heat transfer coefficients, friction factors and thermal performances are compared with those of 90°, 45° and discrete angled ribs. The V-shape ribs are tested for both pointing upstream and downstream of the main flow. Test results show that:a) 90° ribs represent the lowest thermal performance, based on the same pumping power, and is essentially the same for the 2:1 change in blockage ratio, b) low blockage ratio (e/Dh =0.083) V-shape ribs pointing downstream produced the highest heat transfer enhancement and friction factors. Amongst all other geometries with blockage ratios of 0.125 and 0.167, 45° ribs showed the highest heat transfer enhancements with friction factors less than those of V-shape ribs, c) thermal performance of 45° ribs and the lowest blockage discrete ribs are among the highest of the geometries tested in this investigation, and, d) discrete angled ribs, although inferior to 45° and V-shape ribs, produce much higher heat transfer coefficients and lower friction factors compared to 90° ribs.Copyright © 1994 by ASME
Status, needs and possibilities for service life prediction and estimation of district heating distribution networks

An optimised and proactive maintenance strategy aims to maximise the economical profit, minimise environmental impacts and keep the risk of failure to a low level. Implementation of such a strategy in the context of district heating requires efforts and abilities for predicting future performances and estimating service life of district heating components. A literature review on failures (damages and performance reductions) occurring on district heating pipes, reveals that failures in district heating pipes are mainly leaks due to corrosion or mechanical impacts and reduced thermal insulation performance: leaks being the more serious damage type. A feasible service life estimation method for this type of damage is the Factor Method. Since the application of this method within the context of DH pipes has not been found in other publications, this paper focuses on describing the method and discusses the possibilities on how to apply it in two specific cases with respect to leakage: service life estimation of repaired district heating pipe sections (i.e. maintenance of district heating network) and of district heating pipes in new or extended district heating networks. Particular attention is paid to which modifying factors should be considered and how to quantify them.
Influence of suction flow control on energy extraction characteristics of flapping foil

ABSTRACT Flapping foil (FF) is a relatively new renewable energy extraction device, which has the advantages of simple structure, strong environmental adaptability and little impact on the environment. This study proposed a new FF energy extraction equipment with suction control added to the surface. Based on the moving grid technology, the effect of different suction control methods on energy extraction characteristics of FF was numerically investigated. In this paper, taking NACA0012 as the reference airfoil, the influence laws of key parameters, such as suction velocity, suction port position and suction mode on the energy extraction efficiency of FF were studied respectively. The results show that, compared with the original FF, the addition of suction control can effectively control the size of the leading edge negative effect vortex, increase the force consistent with the motion direction of the FF and its surface pressure difference, thus improving the energy extraction efficiency. In addition, the innovative change of suction mode to sinusoidal suction mode in this paper can not only enhance the stability and safety of FF operation structure, but also its energy extraction efficiency is not much different from that of FF with sudden suction control.
Integrated Security Architecture for Multitenant Environment of Public Cloud

This paper is the product of investigation on the security issues that are faced in this multi-tenant model of cloud. The paper is analyzed from the perspectives of the provider of the cloud and the consumer of the cloud. We initially discuss various common models of cloud computing used present day. Later we discuss the various security issues in multi-tenant model of cloud. We propose an Integrated Security Architecture across the OSI layers which establishes a high security over the Cloud Multi-tenant Environment.
Depression and Sleep Quality among Iranian Women with Breast Cancer

Background and purpose: Breast cancer causes many psychological disorders such as sleep disturbances and depression. The current study was, therefore, intended to describe sleep quality and depression and to identify the association between these two psychological disorders among Iranian women with breast cancer. Materials and methods: This descriptive, analytical, cross-sectional study was carried out on 120 women with non-metastatic unilateral breast cancer undergoing chemotherapy in an outpatient chemotherapy unit of a major public hospital. A total of 120 women who had already undergone mastectomy procedure were selected via convenience sampling method. Data were collected by the Beck Depression Inventory-II (BDI-II) and the Pittsburgh Sleep Quality Index (PSQI). Results: The mean score on BDI-II was 13.40 (± 6.51), and 30% (n=36) of women had mild depression and 14.2% (n=17) reported moderate-to-severe depression. The mean global score of sleep quality was found to be 6.48 (± 2.62). Furthermore, 50.8% (n=61) of women obtained a global PSQI score of 5. A positive correlation was found between depression scores and sleep quality scores (p=0.001, r= 0.48). Depression was also correlated with age, number of children, household gross income, sleep duration, sleep latency, and type of mastectomy procedure (p<0.05). Moreover, subjective sleep quality was correlated with number of chemotherapy sessions (p=0.001, r=-0.67) and daytime dysfunction (p=0.001, r=0.78). A positive correlation was also observed between sleep disturbances and habitual sleep efficiency (p = 0.02, r = 0.65). Conclusion: In conclusion, 30% of women had mild depression and 14.2% reported moderate-to-severe depression. The mean global score of sleep quality was found to be 6.48 (± 2.62), suggesting poor sleep quality. Furthermore, over half of the participants (50.8%) obtained a global PSQI score of 5 or greater which is indicative of poor sleep quality. A positive moderate correlation was also observed between depression and poor sleep quality.
Fiber Nonlinearity Analysis in Designing Long Haul 16 40 Gb/S WDM System

in optical high-capacity long-haul wavelength- division multiplexed (WDM) transmission systems design, it is essential to be aware of the existing limitations. Among these limitations are those introduced by nonlinearities inherent in the transmission optical fibers such as Stimulated Raman Scattering (SRS), Stimulated), Self- Phase Modulation (SPM), Cross Phase Modulation (XPM) and Four Wave Mixing (FWM). In this paper nonlinearity effects are studied while designing a long haul (1000 km), a high-capacity 16  40 Gb/s WDM system. The VPItransmissionMaker™WDM simulation software is used in this study. Results of system design are presented showing the fiber nonlinear effects while deciding parameters in the design. Concluding remarks are drawn showing that highest limitations are introduced by SRS and SPM. FWM and XPM posed no limitation on our design.
PackBot: a versatile platform for military robotics

The iRobot PackBot is a combat-tested, man-portable UGV that has been deployed in Afghanistan and Iraq. The PackBot is also a versatile platform for mobile robotics research and development that supports a wide range of payloads suitable for many different mission types. In this paper, we describe four R&D projects that developed experimental payloads and software using the PackBot platform. CHARS was a rapid development project to develop a chemical/radiation sensor for the PackBot. We developed the CHARS payload in six weeks and deployed it to Iraq to search for chemical and nuclear weapons. Griffon was a research project to develop a flying PackBot that combined the capabilities of a UGV and a UAV. We developed a Griffon prototype equipped with a steerable parafoil and gasoline-powered motor, and we completed successful flight tests including remote-controlled launch, ascent, cruising, descent, and landing. Valkyrie is an ongoing research and development project to develop a PackBot payload that will assist medics in retrieving casualties from the battlefield. Wayfarer is an applied research project to develop autonomous urban navigation capabilities for the PackBot using laser, stereo vision, GPS, and INS sensors.
Augmented Reality for Future Mobility: Insights from a Literature Review and HCI Workshop

Abstract There is a growing body of research in the field of interaction between drivers/passengers and automated vehicles using augmented reality (AR) technology. Furthering the advancements and availability of AR, the number of use cases in and around vehicles rises. Our literature review reveals that in the past, AR research focussed on increasing road safety and displaying navigational aids, however, more recent research explores the support of immersive (non-)driving related activities, and finally enhance driving and passenger experiences, as well as assist other road users through external human-machine interfaces (HMIs). AR may also be the enabling technology to increase trust and acceptance in automated vehicles through explainable artificial intelligence (AI), and therefore help on the shift from manual to automated driving. We organized a workshop addressing AR in automotive human-computer interaction (HCI) design, and identified a number of challenges including human factors issues that need to be tackled, as well as opportunities and practical usages of AR in future mobility. We believe that our status-quo literature analysis and future-oriented workshop results can serve as a research agenda for user interface designers and researchers when developing automotive AR interfaces.
Financial Management Capabilities Among Personnel in a State University in The Philippines

Financial management is a key factor in achieving financial autonomy. Like other employees overseas, Filipino employees too are facing financial inadequacy, in one way or another. Thus, this descriptive study was conducted to assess the financial management of the personnel in the West Visayas State University Calinog Campus, Iloilo, Philippines. Using the duly validated and pilot-tested questionnaire, this study examined the three (3) aspects of financial management, namely: financial literacy; financial attitude; and financial management practices. It revealed that the respondents have an average level of financial literacy indicating that employees already possess knowledge in handling personal finances. The financial attitude of the respondents is relatively practical spenders as evident in "comparing prices when shopping for purchases" and "spending less than income". As to financial management practices, most of the respondents put money in the bank in order to cope with the growing expenses of the respondents' children's education. At some point, some employees venture into investments such as livestock and business. Financial management program may be conducted to improve the economic and financial stability of the employees. Emphasis may center on budgeting, expenditure, and saving mechanisms to achieve financial literacy.
Viewpoint Paper: Unintended Consequences of Information Technologies in Health Care - An Interactive Sociotechnical Analysis

Many unintended and undesired consequences of Healthcare Information Technologies (HIT) flow from interactions between the HIT and the healthcare organization's sociotechnical system-its workflows, culture, social interactions, and technologies. This paper develops and illustrates a conceptual model of these processes that we call Interactive Sociotechnical Analysis (ISTA). ISTA captures common types of interaction with special emphasis on recursive processes, i.e., feedback loops that alter the newly introduced HIT and promote second-level changes in the social system. ISTA draws on prior studies of unintended consequences, along with research in sociotechnical systems, ergonomics, social informatics, technology-in-practice, and social construction of technology. We present five types of sociotechnical interaction and illustrate each with cases from published research. The ISTA model should further research on emergent and recursive processes in HIT implementation and their unintended consequences. Familiarity with the model can also foster practitioners' awareness of unanticipated consequences that only become evident during HIT implementation.
Thermal analysis of vertically integrated circuits

In this paper, a thermal analysis of Vertically Integrated Circuits (VIC) is presented for the first time. Based on a 1-D model, temperature differences in VICs of less than 10/spl deg/C are evaluated for most practical applications. Detailed 3-D investigations show that self-heating of MOSFETs in the upper chip-layers of a VIC is more pronounced than in bulk CMOS and that it strongly depends on the thickness of the silicon remaining in the chip-layer. In addition, thermal coupling between adjacent transistors is observed to be much more marked.
Effects of Superposition on Oculomotor Guidance and Target Recognition

Searching for targets in complex scenes like X-ray baggage screening is demanding. One cause of impaired search performance is the superimposed objects of X-ray images. In this study, we compared searching for threat items in a superimposed display and a sparse display. Using both behavioral and eye movement measures, we explored the effects of superposition on search course. As expected, superposition affected accuracy rates and response times. Results showed searching in the superimposed display caused longer fixation durations, and the effect was pronounced throughout the search trial. We also found longer search initiation time and target verification time in superposition, suggesting that the initial planning of oculomotor guidance and target recognition was influenced.
The evolution of graphene-based electronic devices

Successful isolation of single-layer graphene, the two-dimensional allotrope of carbon from graphite, has fuelled a lot of interest in exploring the feasibility of using it for fabrication of various electronic devices, particularly because of its exceptional electronic properties. Graphene is poised to save Moore's law by acting as a successor of silicon-based electronics. This article reviews the success story of this allotrope with a focus on the structure, properties and preparation of graphene as well as its various device applications.
3D nonlinear transient field‐circuit modeling of inductive fault current limiters

Due to increasing levels of fault currents, fault current limiters (FCLs) are expected to play an important role in the protection of future power grids. Inductive saturable FCLs are particularly interesting due to their inherent reaction on the fault. Many different configurations have been proposed in literature. Being difficult or impossible to create accurate analytical models of some FCL configurations, the development of finite element (FE) models for inductive FCLs is required. This paper presents a 3D nonlinear transient FE modeling technique applied to two inductive FCLs, namely the so‐called open‐core and three‐leg single‐core FCLs. The models have been validated by comparing simulation results with lab measurements. Results show excellent agreement. The models constitute a valuable tool for design, optimization, and verification of inductive FCLs. Copyright © 2015 John Wiley & Sons, Ltd.
A model for considering the impact of rescheduling planned maintenance activities in a maintenance service contract

Maintenance services are becoming increasingly relevant and both service providers and users are paying more attention to cost and service level. Nonetheless, until now very little attention has been devoted for understanding and evaluating rescheduling costs which can be quite relevant, particularly if maintenance is outsourced to external providers. This article proposes a model to measure the costs for rescheduling maintenance interventions, thus allowing to take them into consideration both when defining a service contract and when running it. The model has been developed after a wide empirical analysis deployed in two phases: a first exploratory phase aimed at identifying the variables of the rescheduling problem by interviewing the main maintenance service providers in Italy; the second, a confirmatory phase has been developed validating the model using data from real industrial setting and analysing the results with the managers who supplied the data.
AN IMPROVED AND PORTABLE EYE-BLINK DURATION DETECTION SYSTEM TO WARN OF DRIVER FATIGUE

Driver fatigue is a major cause of vehicle accidents. The measurement of eye-blink durations is one of the main schemes to warn of driver fatigue. This article proposes a methodology to detect eye-blink duration, which is similar to electro-oculography (EOG), but only two electrode pads are employed in our detection system. Simple electrode pads were used as sensors to obtain the correct eyelid EOG signal and remove the artificial pseudo-signal (non EOG). A real-time microcontroller calculates and shows the blink-durations and number of blinks. The measurement results are analyzed to warn of driver fatigue. According to our measurements, the numbers of blinks can be measured with high accuracy. The accuracy of blink duration determination was close to 95% via a 1 kHz sampling rate that is equivalent to using a video camera.
Measuring area-level disadvantage in Australia: development of a locally sensitive indicator

Background In Australia, the Socio-Economic Indexes for Areas (SEIFA), which includes the Index of Relative Socioeconomic Disadvantage (IRSD), captures the socioeconomic characteristics of areas. Because SEIFA rankings are relative to the country or state, the decile categorisations may not reflect an area’s socioeconomic standing relative to areas nearby. Aims The aim of the research was to explore whether IRSD rankings could be re-ranked to become locally sensitive. Data and methods Using existing SEIFA data to redistribute the membership of current decile IRSD groups, we tested three methods to re-rank all SA1 areas relative to the nearest areas capped at: (1) the nearest 99 neighbours, (2) a population threshold of 50,000 (3) a distance threshold of 10 km. Results The reclassification of SEIFA IRSD deciles was largest (up to 8 decile points of change) when comparing the nearest neighbour and population threshold local methods to current state-based rankings. Moreover, compared to using current national and state SEIFA IRSD rankings, the use of local rankings resulted in more evenly distributed deciles between cities, regional, and remote areas. Conclusions Because SEIFA IRSD rankings are used to allocate resources and health services, we encourage the combined use of a state and local ranking to refine areas considered the most disadvantaged.
Relationship between rated torque and size of permanent magnet machines

The rated output of induction motors varies with frame size in a manner which is well known to designers of these machines. However, in the case of permanent magnet excited machines, there is a shortage of comparable information. The aim of the paper is to use both analysis and published results to attack this problem. The analysis is presented in terms of torque and the principal dimensions of rotor diameter and length for cylindrical machines. Results are tabulated for a range of machines with rare-earth magnets in terms of available torque output. A clear relationship involving magnet volume and rotor diameter is shown. Consideration of cooling of the stator leads to the conclusion that the observed relationship between torque and dimensions is important for maintaining a satisfactory frame temperature. The effect of the scaling factors on the capability of field weakening for high speed operation is also studied. The general scaling rule should prove useful in establishing the basic size of machine needed for a given output requirement.
Real-time price based home energy management scheduler

With the recent development of advanced metering infrastructure, real-time pricing (RTP) scheme is anticipated to be introduced in future retail electricity market. This paper proposes an algorithm for a home energy management scheduler (HEMS) to reduce the cost of energy consumption using RTP. The proposed algorithm works in three subsequent phases namely realtime monitoring (RTM), stochastic scheduling (STS) and real-time control (RTC). In RTM phase, characteristics of available controllable appliances are monitored in real-time and stored in HEMS. In STS phase, HEMS computes an optimal policy using stochastic dynamic programming (SDP) to select a set of appliances to be controlled with an objective of the total cost of energy consumption in a house. Finally, in RTC phase, HEMS initiates the control of the selected appliances. The proposed HEMS is unique as it intrinsically considers uncertainties in RTP and power consumption pattern of various appliances. In RTM phase, appliances are categorized according to their characteristics to ease the control process, thereby minimizing the number of control commands issued by HEMS. Simulation results validate the proposed method for HEMS.