Miracle-dz/UniFAR-FTUs huggingface dataset:
Bandpass-Filtering Power Amplifier With Compact Size and Wideband Harmonic Suppression

This article proposed a codesign of a power amplifier (PA) and a bandpass filter (BPF) named filtering PA using metal integrated and substrate integrated suspended line (MI-SISL). Two BPFs are designed separately as the input and output matching network to realize bandpass filtering response and good harmonic suppression at the same time. The BPF matching circuits are implemented using SISL-based dual-layer interdigital capacitors for miniaturization and SISL-based dual-layer spiral inductors for low loss. The suspended substrate of the PA is patterned according to the shape of the PA core circuit, which helps to reduce the circuit loss and improve efficiency. Moreover, the metal integrated technique is also proposed by replacing the top and bottom substrates of the conventional SISL structure with metal plates with good electrical and thermal conductivities for heat dissipation. A filtering PA on the MI-SISL platform at 0.9 GHz is fabricated and measured as a demonstration case. An ultrasmall size of $0.12\,\,\lambda _{g} \times 0.07\,\,\lambda _{g}$ is achieved, where $\lambda _{g}$ is the guide wavelength at 0.9 GHz. To the best of our knowledge, this is the most compact filtering PA on the board level to date. In addition, a harmonic suppression level of 40 dBc in up to the fifth-harmonic frequency is achieved.
The optimal subdivision of cut in multi-pass machining operations

The examination of the economics of multi-pass machining operations has significant practical importance, particularly in the development of algorithms for process planning, and area clearance macros for numerically controlled machine tools. The authors show that, for both turning and milling operations, the optimal widths of cut may usually be evaluated without a knowledge of the relevant tool-life equation. The exception to this finding occurs when either a power or torque constraint is active. The authors demonstrate that in the presence of such constraints the optimal widths can still be evaluated without extensive computation.
Hierarchical Bayesian model averaging for hydrostratigraphic modeling: Uncertainty segregation and comparative evaluation

Analysts are often faced with competing propositions for each uncertain model component. How can we judge that we select a correct proposition(s) for an uncertain model component out of numerous possible propositions? We introduce the hierarchical Bayesian model averaging (HBMA) method as a multimodel framework for uncertainty analysis. The HBMA allows for segregating, prioritizing, and evaluating different sources of uncertainty and their corresponding competing propositions through a hierarchy of BMA models that forms a BMA tree. We apply the HBMA to conduct uncertainty analysis on the reconstructed hydrostratigraphic architectures of the Baton Rouge aquifer‐fault system, Louisiana. Due to uncertainty in model data, structure, and parameters, multiple possible hydrostratigraphic models are produced and calibrated as base models. The study considers four sources of uncertainty. With respect to data uncertainty, the study considers two calibration data sets. With respect to model structure, the study considers three different variogram models, two geological stationarity assumptions and two fault conceptualizations. The base models are produced following a combinatorial design to allow for uncertainty segregation. Thus, these four uncertain model components with their corresponding competing model propositions result in 24 base models. The results show that the systematic dissection of the uncertain model components along with their corresponding competing propositions allows for detecting the robust model propositions and the major sources of uncertainty.
Integrating Transportation Planning Models with GIS: Issues and Prospects

This paper examines the possible benefits of combining transportation planning models with geographic information systems (GIS) in the hope that integrating these systems can alleviate the inherent problems of transporta tion planning models, such as user unfriendli ness, labor intensiveness, and theoretical limitations. Specifically, this paper focuses on the issue of incompatibility between GIS and conventional transportation planning models in dealing with network topologies. Resolving this conflict in topologies is a cornerstone for eliminating the user-unfriendliness and labor-intensiveness problems. This paper presents the development of an algorithm that converts GIS topology into transportation network topology. The FORTRAN-based topology conversion algorithm generates transportation networks from GIS carto graphic files and establishes a communication channel between the two systems.
Optical metrology techniques and apparatus for lens assembly

This paper presents the optical and lens design for alignment to meet the challenging position specifications. Fabrication of the prototypes and testing results and analysis are also presented. The system components as well as their interaction with each other were simulated with Zemax software and tested in an experimental setup in order to conduct tolerance study and provide specifications for the mechanical fixtures used in the system. The epoxy is used to affix the parts together in a cost effective manner for prototyping. The position accuracy of ±3 μm compared to the golden unit has been achieved.
A Channel Model for land mobile satellite navigation

One of the most significant problems to achieve an accurate navigation solution for both GPS and GALILEO within cities is the multipath reception. Various channel models do exist for ground to ground communications (e.g. COST 207 for the GSM system). But there is still a lack of knowledge for broadband satellite to earth channels. Therefore the German Aerospace Centre (DLR) performed a measurement campaign in 2002. In this campaign we used a Zeppelin to simulate a satellite transmitting a 100 MHz broadband signal towards earth. To ensure a realistic scenario the signal was transmitted between 1460 and 1560 MHz just nearby the GPS L1 band. This signal was received by a measurement van and was recorded using a regular time grid. The so gathered data was then passed through a super resolution algorithm to detect the single reflections. In a further step we tracked the detected reflections in time and gained a knowledge about the characteristics of any isolated reflection. This includes Power distribution Delay distribution Duration statistic Doppler drift Doppler spectrum. Direct path blockage From this data we derived a channel model that is synthesising approximately the measured channel impulse response. This channel model will be presented in the talk. It allows the realistic simulation of the multipath channel by approximating every single reflection. This model includes time variant reflectors approaching and receding, appearing and disappearing reflectors and a variation of the azimuth and elevation of the satellite. Due to the measurement approach the channel model is independent on the transmitted signal. Therefore the usability for both navigation systems (GPS as well as GALILEO) is given. For better understanding and visualisation we will present video recordings taken during the measurements combined with the channel impulse response, Doppler delay spectrum and geometrical information.
Damage detection using piezoelectric transducers and the Lamb wave approach: I. System analysis

Structural damage detection using piezoelectric transducers and the Lamb wave approach has been under intensive investigations. A commonly pursued topic is the selection of system parameters such that the detection performance can be optimized. Previous studies have indicated that the excitation center frequency plays a critical role, and suggested use of the ‘sweet spot’ frequency to maximize the peak wave amplitude ratio between the S0 and the A0 modes. In this paper, the analytical formulation of Lamb wave propagation on a narrow-strip beam excited and sensed by piezoelectric transducers is outlined first. Then, the antisymmetric and symmetric contents of the wave propagation response are analyzed in detail with respect to system parameters. In particular, the parametric influence on the ‘sweet spot’ frequency is investigated systematically. The complicated interaction of the wave components with respect to damage is illustrated through case studies. The analytical study is supported by numerical analysis using the finite element method and by experimental investigation. This research provides the mechanistic basis for robust damage detection using data processing and statistical analysis tools which is the focus of the second paper of this two-paper series.
Total Colonic Tubular Duplication Including Terminal Ileum and Appendix: A Rare Case

Ad dress for Cor res pon den ce Tugay Tartar, Fırat University Faculty of Medicine, Department of Pediatric Surgery, Elazığ, Turkey Phone: +90 506 632 01 00 E-mail: tugaytartar@gmail.com ORCID: orcid.org/0000-0002-7755-4736 Re cei ved: 18.01. 2021 Ac cep ted: 04.04. 2021 Fırat University Faculty of Medicine, Department of Pediatric Surgery, Elazığ, Turkey Mehmet Saraç, Tugay Tartar, Ünal Bakal, Ahmet Kazez
A CFD Benchmark Study: Leading Edge Film-Cooling With Compound Angle Injection

This paper presents a blind CFD benchmark of a simulated leading edge for a turbine airfoil. The geometry studied was relevant for current designs with two rows of staggered film-cooling holes located at the stagnation location (θ = 0°) and at θ = 25°. Both rows of cooling holes were blowing in the same direction which was 90° relative to the streamwise direction and had an injection angle with respect to the surface of 20°. Realistic engine conditions were simulated including a density ratio of DR = 1.8 and an average blowing ratio of M = 2 for both rows of cooling holes. This blind benchmark coincided with an experimental study that took place in a wind tunnel simulation of a quarter cylinder followed by a flat afterbody. At the stagnation region, the CFD calculation overpredicted the adiabatic effectiveness because the model failed to predict a small separation region that was measured in the experiments. Good agreement was achieved, however, between the CFD predictions and the experimentally measured values of the laterally averaged adiabatic effectiveness downstream of the stagnation location. The coolant pathlines showed that flow passed from the first row of holes over the second row of cooling holes indicating a waste of the coolant.Copyright © 1997 by ASME
Extended topological approach for the assessment of structural vulnerability in transmission networks

Power system vulnerability is a key concern in modern societies and many efforts have been devoted to its analysis. Recently, the wide domain of complex networks that can be used to assess the vulnerability of network systems has been applied to power grids as well with focus on the topological vulnerability of the transmission systems based on its structure in terms of the nodes and their connection patterns. However, a pure topological approach, as proposed in the current literature, fails in capturing the specific features of power systems. The authors propose an extended topological approach, which can incorporate several important features of the power grids such as flow paths, line flow limits and gen/load bus distribution. Also, a set of new metrics able to provide an assessment of the system vulnerability is defined. ‘Net-ability’ measures the aptitude of the grid in transmitting power from generation to load buses efficiently. ‘Path redundancy’ assesses the available redundancy in terms of paths in transmitting power from a generation to a load bus based on entropy. Based on the previous two metrics, the authors introduce a third metric, the ‘survivability’, as a global metric to evaluate the aptitude of the network in assuring the possibility to match generation and demand in case of failures or attacks. The metrics proposed will be applied to different test systems and to a real-transmission system to illustrate their application and effectiveness.
Flame assisted synthesis of nanostructures for device applications

ABSTRACT Development of fabrication technologies for three-dimensional structuring and integration of nanomaterials in devices is important for a broad range of applications, including next-generation high energy density batteries, super(de)wetting and biomedical coatings, and miniaturized biomedical diagnostics. Amongst various nanofabrication approaches, the flame synthesis route accounts for some of the first man-made nanomaterials and industrial production of various nanoparticle commodities such as carbon black, fumed silica, and pigmentary titania. In the past two decades, flexibility in nanomaterials and facile fabrication of nanostructured films by aerosol self-assembly has motivated the exploration of this technology for device applications. In this review, we present a perspective of recent progress in flame-assisted nanofabrication and its application to emerging technologies. The fundamentals of flame synthesis will be briefly reviewed to evaluate trends in flame reactor designs and directions for improvements. A selection of exemplary flame-made nanostructures will be presented across the major categories of catalysis, energy conversion devices, membranes and sensors, highlighting weakness and strengths of this synthesis route. We will conclude with an outlook towards possible implementation of flame-assisted self-assembly as a scalable tool for nanofabrication in emerging devices and a critical assessment of the persisting challenges for its broader industrial uptake. Graphical Abstract
Single Image Haze Removal Based on Dark Channel Prior Applied on Air Duct Robot

The rule of dark channel prior has made significant effect in outdoor image dehazing. The camera on air duct cleaning robots will capture foggy pictures when they are working because of raised dust, these foggy pictures have serious impact on the robot cleaning work. According to the characteristics of pictures in air ducts, we remove haze of these images based on dark channel prior, experimental results show that this method has good effect.
An airman's personal attitude: pilots’ point of view

Abstract The purpose of this study was to examine airline pilots’ own formulation of desirable non-technical skills. Qualitative and quantitative methods were used to identify the pilot community's own perception of desirable personal attitudes. Group interviews formed the basis for developing statements. A sample consisting of 174 pilots were questioned on their perception of desirable attitudes. The major finding indicated clusters of attitudes pilots perceived as desirable. The attitudes pilots called attention to were intimately linked to the concept of airmanship. Factor analysis revealed at least four factors in pilots’ conception of desired personal attitudes of an airman: “knowledge”, ‘flying skills’, ‘CRM’, and ‘self-awareness’.
Quantitative isotope-labeled crosslinker proteomics reveals developmental variation in protein interactions and posttranslational modifications in Diaphorina citri, the citrus greening insect vector

Acquisition of the citrus greening bacterial pathogen, ‘Candidatus Liberibacter asiaticus’ (CLas) by Asian citrus psyllid (Diaphorina citri) nymphs is required efficient tree-to-tree transmission during the adult stage. Quantitative isotope-labeled protein interaction reporter (PIR) cross-linkers were used in parallel with protein quantification using spectral counting to quantify protein interactions within microbe-enriched cellular fractions of nymph and adult D. citri. Over 100 unique crosslinks were found between five insect histone proteins, and over 30% of these were more abundant in nymph compared to adult insects. Strikingly, some cross-links detected in D. citri proteins are conserved in cross-linking studies on human cells, suggesting these protein interaction topologies were present in the common ancestor (∼750MYA) or are subject to convergent evolution. Analysis of posttranslational modifications of crosslinked histones revealed the presence of acetylated and methylated lysine residues, which may impact psyllid chromatin structure and gene expression. Histone H3 peptides acetylated in the N terminal tail region were found to be more abundant in nymph compared to adult insects in two orthogonal proteomics methods. The insect life stage-specific histone posttranslational modifications and protein interactions represent physical evidence that metamorphosis is associated with changes in chromatin structure that regulate genome-wide transcriptional reprogramming.
Subduction of an Oceanic Plateau Across Southcentral Alaska: High‐Resolution Seismicity

In southcentral Alaska, the Alaska‐Aleutian Wadati‐Benioff zone (WBZ) shows high seismicity rates west of 147°W. Further east, the Wrangell volcanic field (WVF) has some of the world's largest continental volcanoes but there is equivocal evidence for a WBZ. We deployed a dense seismometer array around the WVF between 2016 and 2018 and used the data to increase the number of detected earthquakes using an autodetection and location algorithm. One‐dimensional velocity inversion and double‐difference earthquake location further improve earthquake locations. Subcrustal earthquakes form a narrow band of dipping seismicity—a weak but clear WVF WBZ—which strikes parallel to the volcanic trend and dips highly oblique to plate motion. The WVF WBZ is continuous from the coast to a depth of 100 km beneath Mount Wrangell. Earthquakes shallower than 40 km are continuous between the two WBZs, indicating continuity of the subducting Yakutat terrane across the region. However, the earthquakes deeper than 40 km are offset by hundreds of kilometers, which may indicate a slab tear separating the Alaska–Aleutian WBZ from the WVF WBZ. Seismicity rates differ by over 2 orders of magnitude between the separate WBZs, despite the similar incoming plate, with the relatively seismically quiescent WBZ underlying the much more prolific WVF. Higher slab‐surface temperatures beneath the WVF, due to flow around the slab edges and the oblique geometry, may lead to low seismicity rates within subducting crust, as seen in other warm slabs, but abundant water is still transported to subarc depths within the mantle wedge.
Low‐temperature direct bonding of poly(methyl methacrylate) for polymer microchips

A low‐temperature, direct bonding method for poly(methyl methacrylate) (PMMA) plates has been developed by employing surface treatment by atmospheric pressure oxygen plasma, vacuum oxygen plasma, ultraviolet (UV)/ozone or vacuum ultraviolet (VUV)/ozone. Reasonable bonding strength, as evaluated by a tensile test, was achieved below the glass transition temperature (Tg). The highest bonding strength among the achieved results is 1.43 MPa (about three times the value for conventional direct bonding) at an annealing temperature of 50 °C and an applied pressure of 2.5 MPa for 10 min. Low‐temperature bonding prevents deformation of the PMMA microstructure. A prototype PMMA microchip that has fine channels of 5 µm depth was fabricated by hot‐embossing using a Si mold. After atmospheric pressure oxygen plasma activation, direct bonding was carried out at an annealing temperature of 75 °C and an applied pressure of 3 MPa for 3 min. The method gives good bonding characteristics without deformation and leakage. This low‐temperature bonding technology can be applied to polymer micro/nano structures. Copyright © 2007 Institute of Electrical Engineers of Japan© 2007 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.
Reliability Analysis of Marine Platforms Subject to Fatigue Damage for Risk Based Inspection Planning

The probability of failure of steel jacket platforms subjected to fatigue damage is computed by means of Monte Carlo simulations using limit state functions in which wave, wind, and deck loadings are expressed in terms of empirical functions of uncertain maximum wave height. Limit state functions associated with the base shear capacity of the jacket and the shear capacity of the deck legs were used. The sensitivity of the probability of failure to the coefficient of variation of resistance, of wave height, of resistance and loading biases, and to parameters in empirical loading functions, as well as the influence of the reserve strength ratio is analyzed using a simplified limit state function. Results from simulations are compared to those obtained with a formulation that relates the reserve strength ratio to the reliability index. An application to risk based inspection planning for extension of the service life of a platform is given.
Coal-fired Power Plant Power Output Variation Due to Local Weather Conditions

Abstract Every existing source of energy is affected by climate variability. The most direct climate impacts are related to power plant cooling and water availability. Local weather conditions affect the capacity of cooling towers and natural water bodies to transfer waste heat from steam condensers to the atmosphere. Under hot summer conditions even the inlet water from a river may approach the limit set for discharge, and this will mean that the plant is unable to run at full power. For the given thermal power plant configuration, cooling water temperature change generates changes in the condenser pressure. Those changes have a great influence on the power output of the plant. This effect, due to daily variations of the air humidity and temperature, is even more marked for the close cycle cooling (with cooling towers). Without technology-based improvements in cooling system efficiency, the steam-cycle energy efficiency would decrease. In this article, the overview of cooling water temperature increase impact on the energy efficiency in Serbian power plants is given, based on meteorological data and numerical simulation. Obtained results could be used as useful guidelines in design of the new power plants and also in improving existing power plants' performances.
An Accurate $C$– $V$ Measurement Method for Highly Leaky Devices—Part I

Accurate C-V measurement becomes extremely difficult in advanced CMOS technology due to a high level of leakage across the gate dielectric. Recently, a new time-domain reflectometry (TDR)-based C-V measurement method was introduced. This new method offers ease of use and high accuracy while being able to handle a very high level of leakage current. It also allows series resistance and overlap capacitance to be extracted simultaneously and accurately without the need for additional measurement. In this paper, the theoretical basis of the TDR C-V method is described in detail, along with experimental results.
Signs of abuse in children with disabilities: A rapid review with expert panel social validation

ABSTRACT Background Children with intellectual disabilities are at risk of becoming victims of abuse. However, persons working with this population often lack knowledge on how to interpret signs of abuse. The purpose of this study was to identify and socially validate signs of abuse in children with disabilities. Method The study employed a mixed-method sequential design. The first phase consisted of a rapid review of publications that described signs of abuse in children with disabilities (n = 23). The second phase included social validation using an online survey. The participants were professionals working with disability and/or child abuse (n = 39). Results A significant difference between the 10 highest rated signs of abuse compared to the 10 lowest rated signs was found. Group comparisons between participants showed significant differences in the ratings of eight signs. Conclusions The results from the study can provide guidance to the accuracy of signs of abuse in children with disabilities.