Miracle-dz/UniFAR-FTUs huggingface dataset:
Reducing Security Risk for Transportation Management Centers

Transportation management centers (TMCs) make an important difference in the lives of commuters around the country every day. Various types of threats could damage or destroy a TMC's ability to operate. These threats range from rare but devastating terrorist attacks to the more frequent and troublesome utility failures and severe weather conditions. The TMC risk assessment methodology (RAM) introduced in this paper is based on the best practices of several proven RAMs. Its components include asset identification, threat assessment, consequence assessment, vulnerability assessment, and countermeasure development. The research team selected 10 TMCs as a basis for gathering best practices and common challenges. As initial data were developed for the 10 centers, three sites were chosen to participate in more comprehensive on-site vulnerability assessments. This paper provides general recommendations that can be readily applied to all TMCs. These recommendations include taking the time to conduct a comprehensive risk assessment; reviewing, updating, and revising the risk assessment on a regular basis; correcting simple physical vulnerabilities; and training employees in security awareness.
Seasonal Variations of Manning's Roughness Coefficient in a Subtropical Marsh

ABSTRACT Manning's roughness coefficient, N, ranged from 0.16 to 0.55 in a subtropical marsh over the flow depth varying between 65 to 40 cm. The N value increas-ed with a decrease in flow depth. The roughness coeffi-cient tripled over a six month period from June to November. The N value in a nonsprayed area was twice of that determined in a chemically defoliated area. The N value and vegetation density were parabolically related. The increase in N value was directly proportional to the 1/2 power of vegetation density and 2A power of flow depth in all types of vegetation.
Probabilistic fatigue damage prognosis of lap joint using Bayesian updating

A general framework for probabilistic prognosis and uncertainty management under fatigue cyclic loading is proposed in this article. First, the general idea using the Bayesian updating in prognosis is introduced. Several sources of uncertainties are discussed and included in the Bayesian updating framework. An equivalent stress level model is discussed for the mechanism-based fatigue crack growth analysis, which serves as the deterministic model for the lap joint fatigue life prognosis. Next, an in situ lap joint fatigue test with pre-installed piezoelectric sensors is designed and performed to collect experimental data. Signal processing techniques are used to extract damage features for crack length estimation. Following this, the proposed methodology is demonstrated using the experimental data under both constant and variable amplitude loadings. Finally, detailed discussion on validation metrics of the proposed prognosis algorithm is given. Several conclusions and future work are drawn based on the proposed study.
Self-switching in hollow waveguides with a Kerrlike nonlinear permittivity

The dispersion relations, stability, and excitation of the stationary nonlinear transverse electric (TE) waves guided by a nonlinear hollow waveguide are examined numerically. This waveguide consists of a self-focusing nonlinear film bounded by two identical linear claddings of the higher refractive index. Since a minimum power for guidance of the stationary waves always exists, the nonlinear hollow waveguide acts as a lower threshold device. A stability analysis using the beam propagation method shows that all the stationary TE/sub n/ modes, including the asymmetric TE/sub 0/ mode, are stable on the positively sloped branch (dP/d beta >0) of the nonlinear dispersion curve. The lower threshold device using the nonlinear hollow waveguide exhibits very sharp power-switching characteristics, and the required device length is fairly short. >
A Strategic Analysis of Korean Engineering Education Based on Two Satisfaction Scores

Student avoidance of science and engineering fields is a significant problem that can hinder national competitiveness. In this study, a structural equation model is used to propose two scores to measure student satisfaction with Korean engineering education: the P‐score, a measure of the students' satisfaction with aspects of their personalities, and the M‐score, a measure of the students' satisfaction with aspects of their majors. Using these two scores to assess the students' satisfaction with engineering education in Korea, several strategic approaches to improve student satisfaction with Korean engineering education are proposed.
Qualitative Business Surveys in Manufacturing and Industrial Production - What can be Learned from Industry Branch Results?

Business tendency surveys are a popular tool for the timely assessment of the business cycle, used by economists and by the public. This article considers survey results in the manufacturing sector in more detail and looks into the question of, whether the analysis of branch results leads to an information gain. The business cycle turning points are identified in the filtered series and average leads to the turning point of industrial production are calculated. In addition to these leads the ratios of the signal variances to the noise variances are calculated to assess the clarity of the signal contained in the indicator series. Apart from assessing the general business cycle course the survey results in manufacturing are often used to forecast moment-to-moment changes of industrial production. Analyses based on wavelets show that the survey balances are useful to forecast the larger scale movements only. Nevertheless, the comparison of out-of-sample forecast errors show that the inclusion of survey results as independent variables in an autoregressive model improves the forecasts.
Mobile terminal antenna using a planar inverted‐e feed structure for enhanced impedance bandwidth

This article proposes a planar inverted–E (PIE) antenna, able to attain a wide impedance bandwidth.The antenna is created by inserting a branch capacitance between the feed line and the shorting pin of a conventional planar inverted–F antenna (PIFA). Such a modification significantly enhances the impedance bandwidth while maintaining the size of the antenna element. A comparative analysis on the characteristics of both the reference PIFA and the proposed PIE antenna was conducted to demonstrate the performance improvement in the bandwidth and efficiency of the proposed antenna. In the lower frequency bands, the proposed antenna possesses a very wide impedance bandwidth, 245 MHz, from 730 to 975 MHz, under a voltage standing wave ratio of 3:1 with good antenna efficiency. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2133–2139, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27035
Resistance factors for laterally unsupported steel beams and biaxially loaded steel beam columns

Data from 30 tests conducted on laterally unsupported steel beams, and 148 tests on biaxially loaded steel beam columns conducted by others are statistically analyzed to determine resistance factors appropriate for use with the design equations given in CSA Standard CAN3-S16.1-M84 (Steel structures for buildings—limit states design). The general value of 0.90 currently given in that standard for the resistance factor is shown to be conservative by 1 –6% for both laterally unsupported beams and biaxially loaded beam columns. Key words: beam columns, beams, biaxially loaded, laterally unsupported, limit states design, resistance factors, steel.
Color Management for Wide-Color-Gamut UHDTV Production

Ultrahigh-definition television (UHDTV) is a wide-color-gamut system, as standardized in Rec. ITU-R BT. 2020 and SMPTE ST 2036-1, that covers most real object colors and encompasses the gamuts of high-definition television (HDTV), Adobe RGB, and Digital Cinema Initiative Primary 3 (DCI-P3). The development of wide-gamut displays and high-quality gamut mapping is a major challenge in the workflow of UHDTV production today. While monochromatic light sources, such as lasers, are ideal for UHDTV wide-gamut displays, wide-gamut liquid crystal displays with nonmonochromatic backlight sources, such as quantum dot light-emitting diodes, may well be used from the viewpoint of both cost and performance. Furthermore, a high-quality gamut mapping algorithm between UHDTV and HDTV for live broadcast production is essential. This paper offers solutions to these challenges.
Genealogical Ethnography: Process Thinking to Study the “Inside” of Projects

Genealogical ethnography is ethnography that acknowledges the impossibility of representing the “real” world and that demands an uncomfortable reflexivity, while still placing a premium on observations and detailed reportage. This theoretical case, along with a coherent methodological approach and its subsequent application to project-organization research, are presented in this article. Specifically, we learn how and why (1) using naturally occurring data; (2) a reporting style; and (3) problematizing confessional tales, together, build a formidable but simple toolkit for studying the “inside” of projects. As a result, the process-thinking capacity inherent to the established research paradigm of ethnography is stimulated.
POD evaluation using simulation: A phased array UT case on a complex geometry part

The use of Probability of Detection (POD) for NDT performances demonstration is a key link in products lifecycle management. The POD approach is to apply the given NDT procedure on a series of known flaws to estimate the probability to detect with respect to the flaw size. A POD is relevant if and only if NDT operations are carried out within the range of variability authorized by the procedure. Such experimental campaigns require collection of large enough datasets to cover the range of variability with sufficient occurrences to build a reliable POD statistics, leading to expensive costs to get POD curves. In the last decade research activities have been led in the USA with the MAPOD group and later in Europe with the SISTAE and PICASSO projects based on the idea to use models and simulation tools to feed POD estimations. This paper proposes an example of application of POD using simulation on the inspection procedure of a complex –full 3D- geometry part using phased arrays ultrasonic testing. It illustr.
Aircraft System Optimization and Analysis for Traceability in Design

In this paper the different representations for design analysis of complex aircraft systems are discussed. Sensitivity analysis is a useful tool for trade studies and to achieve an overview of the importance of different aspects of the design. The introduction of an aggregated design influence matrix greatly improves the ability to handle large systems. Different types of sensitivities are used. Also a disturbance influence matrix is used to see the influence of uncertainties in the design and to spot areas where more effort is needed. These tools are demonstrated on an aircraft design example.
A conceptual framework for hybrid building projects

Purpose – This paper aims to focus on hybrid projects as a type of building adaptation work. It seeks to discuss the hybrid building design process in subsets of information and resulting decisions by highlighting the relationship between them. It also aims to present a conceptual framework which was developed by refining, or customising the RIBA Plan of Work.Design/methodology/approach – Field theory formed the theoretical basis for the approach to mapping the hybrid project process. The conceptual framework itself evolved from a comprehensive literature review, case studies and a practice survey. In total, 11 design and construction professionals evaluated the framework and their comments and feedback are also discussed.Findings – The discussion presents an approach which can be used to manage the delivery of hybrid projects, although it was found that the proposed framework can be applied to a wider spectrum of construction projects.Research limitations/implications – The evaluation of the framework wa.
Effect of w/c ratio on air-void system of foamed concrete and their influence on mechanical properties

A study was undertaken to investigate the effect of water to cementitious material (w/c) ratio (ranging from 0·22 to 0·60) on the air-void system (air content ranging from about 10 to 70%) of foamed concrete, and their effects on the mechanical properties of foamed concrete without sand. The cementitious material used in this study was blended cement with 50% ordinary Portland cement (OPC) and 50% ground granulated blastfurnace slag (ggbs) by weight. The linear traverse method was used to characterise the air-void system, referring to air content, average air-void size, air-void frequency and spacing factor. The results show that although the same quality of foam was introduced, the air-void size and frequency, and hence spacing factor, of the foamed concrete varied with different w/c ratios and air contents, which in turn affected the mechanical properties of the concrete. For the different w/c ratios and air contents adopted, it was found that an air-void system with a spacing factor of about 0·05 mm, a.
Laboratory and greenhouse evaluation of four iron fertilizer sources

A relatively new iron fertilizer in the United States is FeHBED [Fe‐N,N′‐bis(2‐hydroxybenzyl)ethylenediamine‐N,N′‐diacetate], a chelate with a stability constant for ferric iron greater than FeEDDHA [Fe‐ethylenediamine‐N,N′‐bis(o‐hydroxyphenylacetate]. This study compared response of soybean [Glycine max (L.) Merr. ] over two greenhouse cropping periods to FeHBED, FeEDDHA‐1 (∼80% ortho‐ortho isomer), FeEDDHA‐2 (∼50% ortho‐ortho isomer), and FeEDDHSA [Fe‐ethylenediamine‐N,N‐di([2‐hydroxy 5‐sulfophenyl])acetate]. FeHBED and FeEDDHA‐1 gave positive responses to all measured parameters (chlorophyll level, dry matter production, Fe uptake) that were not significantly different (.05 level) from each other for the two cropping periods. The two products were similar in performance. FeEDDHA‐2 and FeEDDHSA generally gave lesser responses than FeHBED or FeEDDHA‐1. The relative effectiveness of the four materials to increase dry matter or Fe uptake was predicted by a simple laboratory test, which measures the proportion of applied Fe remaining soluble after a 1‐wk incubation with soil.
Saturation effects on the steady-state stability limit of turbine-generators

The stability limit to the under-excited operation of synchronous generators is expressed in terms of two-axis reactances. These reactances have in the past generally been those applicable for rated load or corresponding with the short-circuit ratio. Modern large solid-rotor generators are heavily saturated and the use of these fixed reactances introduces error. Reactances appropriate to limiting operation are obtained here together with their derivatives with respect to load angle to give the limit. New limits for two large machines are presented. The new limits are more restrictive than when rated-load reactances are used but less restrictive than using those associated with the short-circuit ratio.
Line-start permanent-magnet motor synchronisation capability improvement using slotted solid rotor

This study presents a line-start permanent-magnet motor with high synchronisation capability using a slotted solid rotor. With slotted solid rotors, a much better magnetic flux and current penetration into the rotor is achieved. Moreover with additional magnetic flux penetration into rotor core, the motor slip decreases and electromagnetic torque near synchronous speed will increase. Consequently, the proposed motor can reach synchronous speed under higher load torques and inertias. Two-dimensional finite-element method has been implemented in order to confirm this new idea. Finally, a four-pole, 250 V, 1500 rpm, 1050 W, three-phase synchronous motor with slotted solid rotor is designed and prototyped to experimentally validate the capabilities of the proposed motor.
Weighted overlapped recovery for blocking artefacts reduction in block-based compressive sensing of images

In compressive sensing (CS) of images, a block-based framework is preferred to avoid the huge memory and computation required for a frame-based approach. However, the recovered image suffers from blocking artefacts due to independent block processing, especially at a low subrate. As a result of this reported work the artifacts are reduced by weighted averaging adopting two techniques: overlapped CS recovery and adaptive weighting. Simulation results show its improvement in both subjective and objective qualities.
A new bi‐faced log periodic printed antenna

In this paper, a new design of a broadband planar printed antenna based on the academic log periodic antenna is presented. The antenna consists of a series of printed dipoles, distributed on both faces of the substrate. Some configurations are explored, with a different number of printed dipoles. These are designed, simulated, fabricated, and measured. The calculated and measured return losses and radiation patterns are presented. The utility of the proposed antenna associated with its frequency bandwidth is better than 80%. The measured absolute gain is 6.5 dBi, and the front‐to‐back ratio is around 8 dB. The presented antenna should find wide applications in wireless communication systems and phased arrays. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 402–405, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21363
Free vibration analysis of combined system with variablecross section in tall buildings

This paper deals with determining the fundamental frequency of tall buildings that consist of framed tube, shear core, belt truss and outrigger systems in which the framed tube and shear core vary in size along the height of the structure. The effect of belt truss and outrigger system is modeled as a concentrated rotational linear spring at the belt truss and outrigger system location. Many cantilevered tall structures can be treated as cantilevered beams with variable cross-section in free vibration analysis. In this paper, the continuous approach, in which a tall building is replaced by an idealized cantilever continuum representing the structural characteristics, is employed and by using energy method and Hamilton\'s variational principle, the governing equation for free vibration of tall building with variable distributed mass and stiffness is obtained. The general solution of governing equation is obtained by making appropriate selection for mass and stiffness distribution functions. By applying the separation of variables method for time and space, the governing partial differential equation of motion is reduced to an ordinary differential equation with variable coefficients with the assumption that the transverse displacement is harmonic. A power-series solution representing the mode shape function of tall building is used. Applying boundary conditions yields the boundary value problem; the frequency equation is established and solved through a numerical process to determine the natural frequencies. Computer program has been developed in Matlab (R2009b, Version 7.9.0.529, Mathworks Inc., California, USA). A numerical example has been solved to demonstrate the reliability of this method. The results of the proposed mathematical model give a good understanding of the structure
A Novel Flux-Weakening Structure of High-Speed Permanent Magnet Motor Based on the Soft Ferrite

Soft ferrite has the characteristics of high permeability, high resistivity, low loss. Based on this, a new flux-weakening structure of high-speed permanent magnet motor was presented. The structure relies on changing the saturation of soft magnetic ferrite to change the equivalent magnetic resistance of permanent magnet magnetic circuit in the motor, so the main flux of the permanent magnet motor can be reduced. By the 3D Finite Element analyses, the magnetic field distribution characters in the air gap can be pointed out. The analysis results prove the flux-weakening method is presented in this paper is correct and feasible. It can provide a practical flux-weakening method of the high-speed PM motor.
The Design of Hotel Management System Based on Iris Recognition Research

With the development of tourism hotels industry have got great development, and it is popular to introduce computer services and computer management in daily work. Meanwhile, hotels industry introduces computer services and management has also got a good economic and social benefits. So, the Ministry of Construction made a decision: Any star hotel's design must include a computer management system when it's in the project approval, otherwise, it will be refused. It is clear, the computer management of clients is imperative in hotel.
Realization of 10 GHz minus 30dB on-chip micro-optical links with Si-Ge RF bi-polar technology

Si Avalanche based LEDs technology has been developed in the 650 -850nm wavelength regime [1, 2]. Correspondingly, small micro-dimensioned detectors with pW/μm2 sensitivity have been developed for the same wavelength range utilizing Si-Ge detector technology with detection efficiencies of up to 0.85, and with a transition frequencies of up to 80 GHz [3] A series of on-chip optical links of 50 micron length, utilizing 650 – 850 nm propagation wavelength have been designed and realized, utilizing a Si Ge radio frequency bipolar process. Micron dimensioned optical sources, waveguides and detectors were all integrated on the same chip to form a complete optical link on-chip. Avalanche based Si LEDs (Si Av LEDs), Schottky contacting, TEOS densification strategies, silicon nitride based waveguides, and state of the art Si-Ge bipolar detector technologies were used as key design strategies. Best performances show optical coupling from source to detector of up to 10GHz and - 40dBm total optical link budget loss with a potential transition frequency coupling of up to 40GHz utilizing Si Ge based LEDs. The technology is particularly suitable for application as on-chip optical links, optical MEMS and MOEMS, as well as for optical interconnects utilizing low loss, side surface, waveguide- to-optical fiber coupling. Most particularly is one of our designed waveguide which have a good core axis alignment with the optical source and yield 10GHz -30dB on-chip micro-optical links as shown in Fig 9 (c). The technology as developed has been appropriately IP protected.
The Mechanism Analysis of Horizontal Vibrated Conveyor with Inclination

Considering the transition effect of static friction to dynamic friction, a two degree-of- freedoms vibration model of a new type of horizontal vibrated conveyor with inclination which can be used for continuous charging of electric arc furnace is formulated using d'Alembert principle. Based on the proposed vibration model, a program is wrote and the transmit mechanism is investigated. Computational results reveal numerous interesting conveying characteristics which can be used to forecast and control the vibration of the scrap and the conveyor.