Miracle-dz/UniFAR-FTUs huggingface dataset:
Reliability and failure analysis of fiber optical network components

This paper describes analysis tools and characterization techniques for photonic components related materials analysis as well as functionality and reliability testing. Field failures and breakdowns of optical fibers and cables, fiber Bragg gratings, connectors, semiconductor lasers, opto-couplers, micro-optical elements, and others have to be analyzed and failure causes and mechanisms have to be found in order to improve future components. On the other hand, new materials used and new components for future all-optical networks may lead to new failure mechanisms, which have to be analyzed and modeled for lifetime predictions. In this paper some basic principles of instruments and techniques used for reliability and failure analysis rather than a deep treatise are given and may guide the reader to find appropriate methods for a specific problem. Illustrative examples are provided.
Evaluating Potential Ecological Risks of Heavy Metals of Textile Effluents and Soil Samples in Vicinity of Textile Industries

The present study pertains to assessing the heavy metal (Cd, Cr, Co, Cu, Pb, and Zn) contents of untreated and treated effluents of two textile industries and agricultural soil samples in the vicinity of these industries located in Ludhiana, Punjab (India). The genotoxicity of the effluents samples was estimated using Allium cepa root chromosomal aberration assay. The exposure of Allium cepa roots to untreated effluents from both industries resulted in the reduction of mitotic index (MI) and increase in chromosomal aberrations in the root tip meristematic cells when compared to those that were exposed to the treated effluents indicating the significant genotoxic potential of untreated effluents. Risk characterization of soil sample was carried out by calculating the potential ecological and human health risks of heavy metals. The hazard index was observed to be less than 1, indicating there was no potential health risk of heavy metals in soil samples. Furthermore, bioaccumulation potential studies on plant species grown in the vicinity of these industries have shown that bioaccumulation factor (BAF) varied as Ricinus communis L. > Chenopodium album L. > Cannabis sativa L. with Co and Pb having maximum and minimum values, respectively.
Nursing in the aftermath of disaster: orphanage relief work in Romania

Disaster relief workers experience psychological and physical needs as a direct consequence of their disaster involvement. While this impact has been acknowledged, relatively little is known about the nature of the psychosocial demands generated by prolonged exposure. Developing both comprehensive preparatory and support programmes for relief workers will require that the nature of these demands, their impact on personnel, and their implications for disaster management are documented. Describes the experiences of a group of nurses who provided relief care in Romanian orphanages in the aftermath of the 1989 revolution in that country. Suggests that prolonged disaster exposure creates specific personal demands and operational problems. Problems were described in relation to operational practices and national issues (e.g. political and cultural factors). Describes the implications of these factors for relief worker wellbeing and relief operation effectiveness, together with suggestions for managing these dem.
Psychological and Physical Performance Characteristics of Successful Explosive Ordnance Diver Technicians

Abstract : This report describes the development of testing procedures to select students for Explosive Ordnance Disposal (EOD) training and thereby reduce attrition in this technical training specialty. In a longitudinal study of Navy EOD students (N=145), a battery of tests including a vocational preference measure, a personality measure, and a set of physical performance measures correlated . 51, . 47, and . 61 respectively with second class diving certification, EOD course completion, and performance in the fleet. In a predictive validation study of apprentice Army and Navy EOD students (N=179), a 44-item personality measure emphasizing elements of academic motivation, self- confidence, self-control, and self-sufficiency correlated . 38 with successful course completion. The military and cognitive measure, ASVAB, did not predict training performance in either study. Use of such validated measures for personnel selection should substantially alleviate attrition during both full and apprentice EOD training and also identify those who are likely to remain in EOD work subsequent to training. Keywords include: Military personnel; Attrition; Validation; Personality tests; Bomb disposal; Physical fitness.
Virtusphere: Walking in a Human Size VR “Hamster Ball”

A major challenge for virtual reality (VR) interfaces is to provide realistic human interactions with the virtual world in more natural ways; one solution is to use a device called the VirtuSphere (VS). The VS provides a mechanism for walking in VR in semi-natural way; however, users have to adapt to walking in a moving platform, having limited visual feedback and integrating motion cues with physical responses. In this study we report on the challenges novice users of this virtual reality locomotion device encounter when performing navigation tasks in a virtual environment in two visual conditions (first-person and third-person viewpoint). We analyzed how performance, simulator sickness, and satisfaction vary under these two viewpoint conditions. We found that motion sickness and balance disturbance were more pronounced for the first-person viewpoint group than for the third-person group. However the first-person viewpoint group performed better and enjoyed the experience more than the third-person view group.
Iranian Traditional Architecture and Energy Saving (CASE STUDY: Shiraz Ghajar Houses)

Climate is an important factor in logical formation of urban structures and their type of architecture. The present study looks at the relationship between the traditional buildings and sustainable development as well as the climatic conditions and construction patterns in Shiraz. The purpose of this research is to help promote energy efficient architectural design in Semi hot-arid climates by introducing the technics that the traditional architects used to design buildings in Shiraz. The climatic design solutions studied in a number of traditional buildings Belong to Qajar era in Shiraz. Result of this paper; show that considering the experience in traditional architecture of Shiraz, it is possible to create an environmental and sustainable architecture. Keywords: Iranian traditional architecture, Vernacular architecture, Hot-Arid zone architecture, Shiraz houses;
A numerical study on the effect of sweep angle on flapping-wing flight using fluid-structure interaction analysis

The sweep-back effect of a flexible flapping wing is investigated through fluid-structure interaction analysis. The aeroelastic analysis is carried out by using an efficient fluid-structure interaction analysis tool, which is based on the modified strip theory and the flexible multibody dynamics. To investigate the sweep-back effect, the aeroelastic analysis is performed on various sweep-back wing models defined by sweep-chord ratio and sweep-span ratio, and then the sweep-back effect on the aerodynamic performance is discussed. The aeroelastic results of the sweep-back wing analysis clearly confirm that the sweep-back angle can help a flexible flapping wing to generate greater twisting motion, resulting in the aerodynamic improvement of thrust and input power for all flapping-axis angle regimes. The propulsive efficiency can also be increased by the sweep-back effect. The sweep angle of a flapping wing should be considered as an important design feature for artificial flexible flapping wings.
SGL: Speaking the Graph Languages of Semantic Parsing via Multilingual Translation

Graph-based semantic parsing aims to represent textual meaning through directed graphs. As one of the most promising general-purpose meaning representations, these structures and their parsing have gained a significant interest momentum during recent years, with several diverse formalisms being proposed. Yet, owing to this very heterogeneity, most of the research effort has focused mainly on solutions specific to a given formalism. In this work, instead, we reframe semantic parsing towards multiple formalisms as Multilingual Neural Machine Translation (MNMT), and propose SGL, a many-to-many seq2seq architecture trained with an MNMT objective. Backed by several experiments, we show that this framework is indeed effective once the learning procedure is enhanced with large parallel corpora coming from Machine Translation: we report competitive performances on AMR and UCCA parsing, especially once paired with pre-trained architectures. Furthermore, we find that models trained under this configuration scale remarkably well to tasks such as cross-lingual AMR parsing: SGL outperforms all its competitors by a large margin without even explicitly seeing non-English to AMR examples at training time and, once these examples are included as well, sets an unprecedented state of the art in this task. We release our code and our models for research purposes at https://github.com/SapienzaNLP/sgl.
A Smart Blacklist Filter for the Android System

In this paper, we present an efficient blacklist filter to address fraudulent calls on an Android system. In general, fraudulent calls are almost never included in blacklist databases of smartphones. Therefore, we combined blacklist databases and adaptive neuro-fuzzy inference systems (ANFIS) to reduce the chances of being cheated by a fraudulent caller. The smart blacklist filter consists of two steps. First, the system checks for whether a call matches the blacklist databases. If it does, the call will be filtered. If not, the call moves on to the second step. Second, an ANFIS method is used to assist in assessing the degree of risk for mismatched calls. From the experimental results, smartphones will have increased security when considering the calls used by ANFIS.
Physical and psychological discomfort in the office environment

Office employees spend a lot of time inside buildings, where the physical conditions influence their well-being and indirectþ influence their employers' business performance. With data from a field study conducted in the Netherlands in April-May 2003, we used path analysis to further elucidate the relationship between personal (gender and seasonality of mood shifts), building (view type, view quality, window distance, and social density), and environmental conditions (light quality, and office impression) and physical and psychological discomfort, sleep quality, and hindrance. The results show that window views of nature, and those that are rated as being more altractive, are beneficial to building occupants, reducing discomfort. However, being close to a window and rating the lighting as being of lower quality can result in thermal and glare problems (hindrances). Reduced discomfort at work can improve sleep quality, indicating that physical conditions at work influence home life.
Standoff detection of concealed handguns

An active technique for the standoff detection and identification of concealed conducting items such as handguns and knives is presented. This technique entails illuminating an object with wide range stepped millimetre wave radiation and inducing a local electromagnetic field comprised of a superposition of modes. The coupling to these modes from the illuminating and scattered fields is, in general, frequency dependent and this forms the basis for the detection and identification of conducting items. The object needs to be fully illuminated if a full spectrum of modes and therefore a full frequency response are to be excited and collected. The scattered EM power is measured at "stand off" distance of several metres as the illuminating field is frequency swept and patterns in frequency response characteristic to the target item being sought are looked for. This system relies on contributions from the aspect independent late time responses employed by Baum1 together with aspect independent information derived specifically from gun barrels and polarisation from scattering effects. This technique is suitable for a deployable gun and concealed weapons detection system and does not rely on imaging techniques for determining the presence of a gun. Experimental sets of responses from typical metal or partially conducting objects such as keys, mobile phones and concealed handguns are presented at a range of frequencies.
A high-speed event-driven active pixel sensor readout for photon-counting microchannel plate detectors

We describe a novel readout system for photon-counting microchannel plate detectors, based on a custom-designed event-driven CMOS Active Pixel Sensor (APS). The event-driven APS device is fiber-optically coupled to the microchannel plate intensifier in a configuration analogous to that employed in intensified CCDs (ICCDs). APS technology permits the incorporation of comparator circuitry within each pixel. When coupled with suitable CMOS logic outside the array area, the comparators can be used to trigger the readout of small sub-array windows only when and where intensified photon events have been detected. The event-driven APS readout thus completely eliminates the local dynamic range limitation of ICCDs, while achieving a high global count rate capability and delivering high (MCP-limited) spatial resolution (through sub-pixel centroiding of the event splashes, performed off-chip). We elaborate on this concept and the design of the event-driven APS below.
Assembly and Irradiation Modeling of Residual Stresses in Low-Enriched Uranium Foil-Based Annular Targets for Molybdenum-99 Production

This paper considers a composite cylindrical structure, with low-enriched uranium (LEU) foil enclosed between two aluminum 6061-T6 cylinders. A recess is cut all around the outer circumference of the inner tube to accommodate the LEU foil of open-cross section. To obtain perfect contact at the interfaces of the foil and the tubes, an internal pressure is applied to the inner tube, thereby plastically and elastically deforming it. The residual stresses resulting from the assembly process are used along with a thermal stress model to predict the stress margins in the cladding during irradiation. The whole process was simulated as a steady-state two-dimensional problem using the commercial finite element code Abaqus FEA. The irradiation behavior of the annular target has been presented, and the effect of the assembly residual stresses has been discussed.
Aerodynamic characteristics of NACA 4412 airfoil sction with flap

Abstract Wing-in-Ground vehicles and aerodynamically assisted boats take advantage of increased lift and reduced drag of wing sections in the ground proximity. At relatively low speeds or heavy payloads of these craft, a flap at the wing trailing-ground-effect flow id numerically investigated in this study. The computational method consists of a steady-state, incompressible, finite volume method utilizing the Spalart-Allmaras turbulence model. Grid generation and solution of the Navier-Stokes equations are completed flow with a flap, as well as ground-effect motion without a flap. Aerodynamic forces are plain flap. Changes in the flow introduced with the flap addition are also discussed. Overall, the use of a flap on wings with small attack angles is found to be beneficial for small flap deflections up to 5% of the chord, where the contribution of lift augmentation exceeds the drag increase, yielding an augmented lift-to-drag ratio
The Influence of Diffuser Channel Geometry on the Flow Range and Efficiency of a Centrifugal Compressor

A small centrifugal compressor was tested with a series of straight wedge diffusers which had included channel divergence angles 2θ ranging from 4° to 14°. Diffusers employing sidewall divergence were also tested. Detailed pressure measurements were made with all of the diffusers. A channel divergence angle of 12° was found to be optimum since increasing the divergence angle beyond 12° produced no efficiency improvements but reduced the flow range of the compressor. Channels employing sidewall divergence produced almost identical efficiency and flow range to channels of the same area ratio without sidewall divergence
Smart Health Management Technology

The notion of health management technology (HMT) is simple but powerful because it employs the ideas of cyclical evolution and synergetic integration of devices and services based on causality and human machine collaboration (Nakajima, 2008a). It can be applied for the different entities of human beings, artifacts, and nature environment as following discussions. An essential and simple observation and understanding of our world reveals that it can be considered as comprising humans, artifacts, and nature environments shown in Fig.1. Even though the values of the entities are given by humans, they have obviously different directions. Examples of such values are comfort and safety for humans, efficiency and effectiveness for artifacts, and environmental enhancement for nature. The problem is that these values come into conflict with each other. Examples of conflicts in a factory are as follows. Productivity related to efficiency and effectiveness is the most important value in manufacturing lines. However, the focus only on productivity will increase the emission of carbon dioxide and other contaminants that will negatively influence to the sustainability of nature environment, and the safety and comfort of human operators in the manufacturing line. Thus, the conflicts of values among the respective entities cause serious problems in important areas such as the environment, agriculture and food, security and safety, and human health these days. In this sense, harmonization among them should be realized with keeping good health condition of each entity for realizing a desired next society. Although this vision might look grandiloquent, health management of each entity is considered as important activity as steady steps toward the bright future. Because of recent development of information and communication technology (ICT), sensory networks have been pervading various fields such as home security, healthcare, condition-based maintenance for manufacturing equipment, and environment monitoring. They require the suitable integration of both sensing devices and valuable services. HMT is designed for providing basic four kinds of functions by centering causality. The functions are measurement, recognition, estimation, and evolution. The functions provide the solution of cyclical evolvement based on causality which abstractly illustrates conditions of target systems and is used as problem solving knowledge, which is composed of feature attributes extracted from sensory data and intermediate characteristics. In this sense, causality could evolve and be updated according to sophistication of sensing and control mechanisms. Because the nature of causality is transparent to humans, the structure can be easily improved through human-machine collaboration. This feature of the technology is quite important because the integration of human knowledge and sensory data will bring a
Clinical diagnostic value of spiral CT in invasive pulmonary fungal infection

This study explored the diagnostic value of computed tomography (CT) in pulmonary fungal infection to provide a theoretical basis for the clinical diagnosis of pulmonary fungal infections. The clinical data of 82 suspected invasive fungal infection (IFI) patients admitted to the Department of Critical Care Medicine of The Affiliated Hospital of Qingdao University from January 2016 to May 2018 were retrospectively analyzed, and 64 of them were diagnosed with IFI by pathology and sputum culture. The CT results of the 82 patients were compared with the X-ray results in order to analyze the diagnostic value of CT imaging. Taking pathological diagnosis as the gold standard, the number of true-negative, true-positive, false-negative and false-positive results in X-ray diagnosis were 13, 43, 21 and 5, respectively, while those in CT diagnosis were 11, 59, 5 and 7, respectively. The sensitivity, specificity, accuracy, positive coincidence rate, negative coincidence rate, misdiagnosis rate and missed diagnosis rate of CT in IFI were 92.18, 61.11, 85.37, 89.39, 68.75, 38.89 and 7.81%, respectively, while those of X-ray in IFI were 67.19, 72.22, 68.29, 89.58, 38.24, 27.78 and 32.81%, respectively. The sensitivity, accuracy and negative coincidence rate of CT in the diagnosis of IFI were significantly higher than those of X-ray (P<0.05), with a sensitivity of 92.18%, which indicates that CT has a higher diagnostic value in IFI. The results of CT combined with the basic condition of the patients can be used to initially diagnose pulmonary fungal infections, which is of high diagnostic value and can improve clinical treatment.
Drama Structures : A Practical Handbook for Teachers

This is a teacher's manual, providing fifteen developing lesson structures on different themes involving the pupils in a whole range of drama and learning activities. Notes on practical teaching problems and possible developments for each sequence are given on facing pages. Two further sections of the book provide a simple theoretical framework for drama teaching, and consider some key strategies. This book is for both non-specialists and drama teachers who want to develop their work further. It will be of value to all teachers using drama approaches and strategies in the school curriculum.
Structural performance assessment under near‐source pulse‐like ground motions using advanced ground motion intensity measures

This paper demonstrates the effectiveness of utilizing advanced ground motion intensity measures (IMs) to evaluate the seismic performance of a structure subject to near‐source ground motions. Ordinary records are, in addition, utilized to demonstrate the robustness of the advanced IM with respect to record selection and scaling. To perform nonlinear dynamic analyses (NDAs), ground motions need to be selected; as a result, choosing records that are not representative of the site hazard can alter the seismic performance of structures. The median collapse capacity (in terms of IM), for example, can be systematically dictated by including a few aggressive or benign pulse‐like records into the record set used for analyses. In this paper, the elastic‐based IM such as the pseudo‐spectral acceleration (Sa) or a vector of Sa and epsilon has been demonstrated to be deficient to assess the structural responses subject to pulse‐like motions. Using advanced IMs can be, however, more accurate in terms of probabilistic response prediction. Scaling earthquake records using advanced IMs (e.g. inelastic spectral displacement, Sdi, and IM 1I&2E; the latter is for the significant higher‐mode contribution structures) subject to ordinary and/or pulse‐like records is efficient, sufficient, and robust relative to record selection and scaling. As a result, detailed record selection is not necessary, and records with virtually any magnitude, distance, epsilon and pulse period can be selected for NDAs. Copyright © 2008 John Wiley & Sons, Ltd.
Designing an Integrated Distribution System at DowBrands, Inc

Merging two independent distribution systems into an integrated whole poses significant challenges and opportunities for managers. Not only must they analyze the trade-offs among facility, inventory, and transportation costs, but they must also consider customer-service issues. We developed an optimization-based decision support system (DSS) for designing two-echelon, multi-product distribution systems and applied it to a problem facing DowBrands, Inc. The DSS provided valuable insight into the problem's cost and service trade-offs. Savings in logistics arising from its application are conservatively estimated to be $1.5 million per year.