Miracle-dz/UniFAR-FTUs huggingface dataset:
Analysis of Advantages and Disadvantages on Control Systems for Straight-Through Drawing Machine Electric Drives

The analysis of the control systems for straight-through drawing machine with different power supply circuits of the drive motors has been made. It is shown that the main task of the feasibility of the process of drawing – equality-second volume of metal passing per unit of time at each section of the drawing machine is solved either by means of mechanization or via an electric drive and automation tools. The matter has been settled through mechanization at sliding and magazine-type machines. In them, with installation of the simplest systems of unregulated electric drive, the problem is solved in the first case through wire slip on drawing capstans, in the second case – the use of special driver devices. However, such wire drawing machines have significant drawbacks: higher energy costs, low productivity. At straight-through drawing machines the process reliability question has been solved by an automated electric drive. Wire at such machines from the capstan is directed into a die and then to the next capstan without slipping on the capstan or additional bends and twists. In practice for drawing machine’s electric driving, systems with series, parallel and individual drive motor power supply are used. The analysis of schemes with a serial connection of motor armatures revealed possibility of providing self-drawing process, namely invariance countertension speed drawing. But we have found that the deviation countertension substantially influenced the change in resistance and wire deformation conditions in the portage , and due to the different mechanical inertia blocks — acceleration and deceleration of the machine. The errors in the regulation countertension reach unacceptable according to the technological requirements of units. In the case of circuits with parallel motor armature self-drawing process is absent and no specially organized every countertension management systems essentially depends on the motor voltage. Studies of various design options of electric control systems (indirect regulation, countertension sensors, pressure of metal on a die and tension) showed that the best performance can be achieved in the application of automatic control systems, acting as a compensation system abnormalities, leading to breakage of the wire. However, experimental studies have shown that the error in the regulation countertension in any system with parallel connection of the motor armature is also greater than the maximum allowed. Undoubtedly, higher quality indicators drawing process control is achieved with the use of electric drive systems with individual power motors. In such systems, a given drawing speed accuracy and the amount of force countertension provided with closed automated electric control systems. Errors in the regulation of technological origin does not exceed the maximum allowable values, while drawing speed is 5 times or more higher than the maximum achievable on machines with other power supply circuits of motors.
Analysis of Coronary Artery Lesion Degree and Related Risk Factors in Patients with Coronary Heart Disease Based on Computer-Aided Diagnosis of Coronary Angiography

A combination of various risk factors results in the development of coronary heart disease. The earlier that one identifies and deals with reversible risk factors for coronary heart disease, the greater the chance of recovery. The main goal of this research is to learn whether risk variables are associated with greater extent of coronary artery disease in people with coronary heart disease. This article selects 290 patients who had had coronary angiography in our hospital from September 2018 to March 2019 using a retrospective research and analytic methodology. Coronary angiography split the patients into two groups: those with coronary heart disease and those without. To determine the correlation between risk factors and a score related to heart disease, computer-aided statistical analysis of data about the differences in those risk factors was performed. The results were analyzed using the Spearman correlation and partial correlation, and the relationship between risk factors and Gensini score was analyzed by multiple linear regression. For the analysis, binary logistic regression was used to calculate the correlation between the risk factors of coronary heart disease and the probability of developing coronary heart disease. The findings concluded that increased age, smoking, elevated hs-CRP, HbA1c, hypertension, diabetes, and hyperuricemia are all contributors to coronary heart disease. Coronary heart disease is an independent risk factor for this condition. Many of the factors that play a role in the long-term development of the severity of coronary artery disease, such as hypertension, diabetes, smoking, elevated hs-CRP, decreased HDL-C, raised LDL-C, and TG, are commonly found in men. hs-CRP is the primary risk factor for the degree of coronary artery stenosis and could contribute to the progression of the condition by playing a major role in creating more stenosis.
Antioxidant Potential of Crude Methanol Leaf extract and Fraction of Mallotus oppositifolius

Mallotus oppositifolius (Geiseler) Mull. Arg. (Euphorbiaceae) is a predominant edible shrub in Nigeria. It is locally used for treatment of common infections and wounds. This study evaluated the toxicity and antioxidant potential of the crude extract and fractions of M. oppositifolius using invitro 1,1-diphenyl-2-picrylhydrazine (DPPH) radical scavenging assay. The result showed abundance of flavonoids (28.21), tannins (17.72), alkaloids (7.79) and Saponins (0.23) in the crude extract of M. oppositifolius leaf extract. Also, the result showed that the LD50 is above 5000 mg/kg, therefore the crude extract is safe for consumption. The result further showed that the ethyl-acetate and butanol had significant (p<0.05) antioxidant activity when compared with the control at 125, 62.5 and 31.125 µg/ml respectively while at 250 and 500 µg/ml there was no significant different in the level of reduction of oxidation between the butanol and ethyl acetate when compared with the control. The result further showed that the butanol and ethyl-acetate fraction of M. oppositifolius had the best antioxidant potential among the fractions studied. The result of GCMS studies of ethyl-acetate fraction showed the presence of 7,10,13-eicosatrienoic acid methyl ester, korormicin, agosterol, phyllanthin, ricinoic acid, 2,4,6-decatrienoic acid 1a,2,5,5a,6,9,10,10a-octahydro-5,5a-dihydroxy-4-(hydroxymethyl)-1,1,7,9, limonin, com-pounds that have shown to possess strong antioxidant activities. Also, the GCMS result of butanol fraction showed the presence of seven compounds which include: ferulylhistamine, hippeastrine, 10,13-eicosadienoic acid methyl ester, ethyl 5,8,11,14-eicosatetraenoate, 6-hydroxy-powelline-N-nitroso-7-demethoxy-aldehyde, 6,7-epoxypregn-4-ene-9,11,18-triol-3,20-dione 11,18-diacetate and 5Alpha-androstane-3,17-dione 17-monooxime, compounds which may serve as a new lead for the treatment of diseases associated with the oxidative stress.
From Quantified Self to Quantified Neighboorhood

The past decade has shown a great rise in digital tools to measure various aspects of daily life. Such measured data does not exist in a vacuum and is increasingly integrated in newly designed interactive products. Meanwhile our cities are moving toward smart infrastructure and supporting innovation from citizen initiatives to improve the urban experience and well-being. In the current work we follow these trends by building on the design knowledge created from the designing of personal informatics and bridge this knowledge towards urban informatics solutions. We elaborate upon the stage-based model of personal informatics (Li et al., 2010) and how it can be potentially applied on a neighborhood level. We discuss the proposed expansion from a personal model towards a participatory one and highlight the design decisions regarding motivation and community forming, and present a design case to illustrate the holistic activities of a designer contributing to a community-deployed, quantified project.
Evolution of Japan's flood control planning and policy in response to climate change risks and social changes

Building a sustainable society by strengthening disaster resilience is a common goal in the world. It is crucial to promote cooperation between the general public and the science community by sharing data, information, knowledge, experiences, and ideas. Japan has routinely been beset by catastrophic floods caused mainly by destructive typhoons and critically active seasonal fronts. With the turn of the 21st century, changes in climate and society required additional realignment into the standardized procedures that had evolved over the previous half-century. Japan's new policy, ‘River Basin Disaster Resilience and Sustainability by All,’ takes comprehensive measures, mainly consisting of flood prevention, exposure reduction, and appropriate evacuation, response and recovery, aiming to strengthen disaster resilience and achieve sustainability through concerted efforts among all stakeholders. The policy can play a key role in the achievement of the common global goal.
Resilience Factors, the School-Based Universal Prevention Program "Unplugged" and Healthy Behavior among Early Adolescents

The paper investigates the role of the internal asset (IA), perceived external resources (PER) of resilience, and the school-based universal prevention program known as ‘Unplugged’ in explaining persistent healthy behavior among early adolescence. A sample of 425 adolescents was collected in a repeated measure design study with a baseline (T1) and a six-month follow-up (T2) after the Unplugged implementation. Persistent healthy behavior was assessed by a change in the cumulative index of substance use created by combining alcohol use and cigarette smoking in the past 30 days and their change between T1 and T2. Four categories were created: non-users, permanent users, new users and ex-users. A multinominal logistic regression revealed that non-users were more likely to show higher self-esteem when compared to permanent users. Females had a higher probability of being non-users than either being permanent users or new users. Moreover, Unplugged intervention increased the probability of being a non-user rather than a new user. Regarding PER of resilience, non-users were more likely to have higher home support, prosocial peers, and school connectedness compared to permanent users. Non-users were also more likely to have higher levels of prosocial peers compared to new users. In summary, higher self-esteem, home support, prosocial peers and school connectedness are associated with persistent healthy behavior. To maintain this persistent healthy behavior, the school-based universal prevention program Unplugged has been effective; thus internal assets and external resources of resilience, and prevention program Unplugged, play an important role in the absence of alcohol or cigarette use in early teenage years.
Radiation from discontinuities in strip-line

A method of calculation, which should be adequate for strip-lines of small spacing, is proposed for the evaluation of the radiation of line-above-ground configurations. It is shown that an open-circuit is appreciably worse, from the point of view of radiation loss, than short-circuit with a right-angle corner at an intermediate level. The radiation from a matched post is slightly worse than from the short-circuit, but it should be capable of considerable improvement by the use of a terminating frame antenna. Formulae are also given for the effects of reactive posts, with applications to a simple resonator.
Studying Corporate Crime: Making the Case for Virtual Reality

The study of what motivates corporate criminals has not yet identified the situational and structural characteristics of the corporate environment that lead to law violation. Current research methodologies do not allow researchers to fully understand these situational and structural dynamics, which influence decision-making processes that occur in the corporate world. The study of corporate crime can benefit from the use of virtual reality technology in many ways. This article explains the technology of virtual reality and how it can be applied to the study of corporate crime. Current research methodologies are reviewed and the weaknesses, and how they can be strengthened through virtual reality, are fully discussed.
Modern GPR target recognition methods

In some humanitarian, commercial, and military applications, information on imaging, detection, and localization of shallow buried targets is highly desirable [1]. Often there is a necessity to sense and retrieve this information reliably and safely in, for instance, landmine recognition, archaeological excavations, planetary expeditions, and construction engineering. While a wide variety of technologies are available for subsurface exploration namely, radiometric, seismic, and electromagnetic (EM), only a ground penetration radar (GPR, hereafter) provides non-invasive, safe, efficient, and high-resolution sensing [1]. This advantage has led to significant advances in research on GPR acquisition and information retrieval for the past two decades. In an impulse GPR system [2], the transmit antenna emits an ultra-wideband EM pulse at the surface. As the signal propagates through the subsurface layers, their magnetic and electrical properties such as permittivity, permeability and conductivity induce changes in the phase and amplitude of the scattered wave. While the amplitude of the reflected wave is directly proportional to the complex reflectivity of the buried target, the phase provides information on the target’s location relative to the radar mounted on the surface. The GPR receiver collects and processes the reflected echoes to extract the reflectivities and ranges of several targets. In GPR applications, a target is located within the close range of the radar. As a result, the received signal is composed of multiple reflections from different parts of the same object. This extended target model implies retrieval of multiple ranges and amplitudes of portions corresponding to the same larger object. By exploiting the spatial correlation among the point values of the backscattered signal, GPR generates a target signature that is usually specific to the object being explored and, hence, useful to identify it [3]. In this chapter, we focus on this target recognition aspect of GPR processing. Often terms such as target recognition, classification, and identification are interchangeably used for techniques to classify targets from measured radar data. How-
87th Annual Convention Grapevine, Texas, USA March 2-5, 2008 SUPERSONIC GAS CONDITIONING - COMMERCIALISATION OF TWISTER TECHNOLOGY

Twister is a proven gas conditioning technology. Condensation and separation at supersonic velocity provides several unique benefits as the short residence time within the Twister tube prevents hydrate problems, thereby eliminating the use of chemicals and associated regeneration systems. The simplicity and reliability of this static device with no rotating parts, operating without chemicals, ensures a simple, environmentally friendly facility, with a high availability, suitable for de-manned operation. The first commercial offshore Twister application on the Petronas/Sarawak Shell Berhad B11 facility offshore East Malaysia has now been in continuous operation, with more than 98% availability, for over four years. A complete Twister gas conditioning module has been supplied to Shell Nigeria for chemicalfree fuel gas treatment for a gas turbine driven power plant and a contract has been signed with Petrobras for an onshore Twister system. These plants will be commissioned during Q1 and Q2 2008, respectively. This paper presents an overview of how Twister supersonic technology is utilised to remove Natural Gas Liquids, including the results of two studies evaluating the performance of Twister against both a JT system and a turbo-expander for NGL recovery, together with initial development details for LPG extraction. A brief introduction is also included regarding the development of Twister technology for H2S removal.
Improved AC‐resistance of multiple foil windings by varying foil thickness of successive layers

Purpose – This paper aims to introduce a technique for optimizing conductor dimensions for construction of helical planar inductor windings with reduced ac‐ and dc‐resistance. The loss reduction is evaluated on simulation and experimental level.Design/methodology/approach – Helical planar windings are currently manufactured by forming each conductive and insulating layer individually. The conductive layers are only interconnected later to form the winding. This process allows greater freedom in selecting the optimum conductor dimensions on a per‐layer basis. Methods are proposed for sinusoidal and non‐sinusoidal current excitation waveforms and shaped windings are introduced for further loss reduction where conductors are in close proximity to air gaps in magnetic cores.Findings – Traditional optimization of the conductor thickness used for foil wound inductors renders one single value used for each of the respective layers in the winding. This is a result of the manufacturing process involved in making t.
Response Surface-Based Transition Duct Shape Optimization

Demands on improved efficiency and reduced noise levels cause a strive toward very high by-pass ratio (BPR) turbo-fan-engines resulting in large fans and small high-pressure-ratio cores. The trend of increasing the radial offset between low- and high-pressure systems has made the design of intermediate transition ducts an area of growing importance. Shape optimization techniques for turbo-machinery applications have become a powerful aero-design tool and thanks to the rapid development of computer technology, computational fluid dynamics (CFD) may be used for optimization purposes. Surrogate model-based optimization has in recent years become a good alternative to the gradient-based search algorithms. One well-known surrogate model-based approach is response surface methodology (RSM), which has been used in the present work. RSM used together with design of experiments (DOE) can be a very efficient and robust method for CFD-based optimization. Optimization of two different transition ducts has been performed and evaluated; one 2D axi-symmetric turbine duct and one 3D compressor duct. The optimization objective was to minimize the total pressure loss. For the turbine duct both a high-Re and a low-Re turbulence closure were evaluated. The influence of design space size on the turbine duct optimization was investigated and for the 3D compressor duct the effects of adding an outflow constraint were examined. It has been found that end-wall optimization has the potential to reduce duct losses significantly. An early rapid diffusion and a stream-wise curvature shift toward the outlet seem to be important mechanisms for reducing transition duct losses.Copyright © 2006 by ASME
A Query Language for Workflow Logs

A business process (workflow) is an assembly of tasks to accomplish a business goal. Real-world workflow models often demanded to change due to new laws and policies, changes in the environment, and so on. To understand the inner workings of a business process to facilitate changes, workflow logs have the potential to enable inspecting, monitoring, diagnosing, analyzing, and improving the design of a complex workflow. Querying workflow logs, however, is still mostly an ad hoc practice by workflow managers. In this article, we focus on the problem of querying workflow log concerning both control flow and dataflow properties. We develop a query language based on “incident patterns” to allow the user to directly query workflow logs instead of having to transform such queries into database operations. We provide the formal semantics and a query evaluation algorithm of our language. By deriving an accurate cost model, we develop an optimization mechanism to accelerate query evaluation. Our experiment results demonstrate the effectiveness of the optimization and achieves up to 50× speedup over an adaption of existing evaluation method.
Effect of Late Pregnancy Self-Perineal Massage on the Perineal State of the Primiparturients

Perineal massage help to stretch the vaginal opening and surrounding perineal muscles through applying of external manual pressure, It increases the flexibility of the perineal muscles, thereby reducing muscle resistance, causing the perineum to stretch during labor without rupture and no need for an episiotomy. Aim: This study aimed to assess the effect of late pregnancy self-perineal massage on the perineal state of the primi-parturients. Methods: Quasi experimental design was used to conduct this study at a private hospital of obstetrics and gynecology specialty at ElMahalla El –Kobra city, Gharbia Governorate, Egypt. A nonprobability purposive sample of 68 pregnant women were invited to participate in the study and were divided into two groups (n=34 per each group); the intervention group (underwent late pregnancy self-perineal massage) and control group (underwent conventional hospital protocol of care). Two tools were used to collect the data; the first tool was a structured interview schedule to assess participants' basic characteristics. The second tool was assessment sheet to assess the duration of labor, perineal state and neonatal outcomes after delivery. Results: Post intervention, there was statistical significant difference between the studied groups regarding perineal trauma in which 82.4% of the subjects in the perineal massage group had intact perineum compared to 64.7% of the control group. The mean duration of second stage of labor was shorter in the perineal massage group compared to control group (54.411 ± 3.105 & 57.176 ± 2.989, respectively). Conclusion: The current study findings highlighted those primi-parturient women who perform late pregnancy selfperineal massage exhibits shorter duration of labor and experiences lower perineal trauma as well as reports lower postpartal perineal pain. This study recommended that late pregnancy self-perineal massage technique should be considered as a part of the routine perinatal care to reduce the incidence of perineal trauma.
Rotorcraft simulation fidelity: new methods for quantification and assessment

Abstract Flight simulators are integral to the design/development, testing/qualification, training and research communities and their utilisation is ever expanding. The use of flight simulation to provide a safe environment for pilot training, and in research and development, must be underpinned by quantification of simulator fidelity. While regulatory simulator standards exist for flight training simulators and new standards are in development, previous research has shown that current standards do not provide a fully quantitative approach for assessing simulation fidelity, especially in a research environment. This paper reports on progress made in a research project at the University of Liverpool (Lifting Standards), in which new predicted and perceptual measures of simulator fidelity have been developed. The new metrics have been derived from handling qualities engineering practice. Results from flight tests on the National Research Council (Canada) Bell 412 ASRA research aircraft and piloted simulation trials using the HELIFLIGHT-R simulator at Liverpool are presented to show the efficacy of adopting a handling qualities approach for fidelity assessment. Analysis of the new metrics has shown an appropriate degree of sensitivity to differences between flight and simulation.