Miracle-dz/UniFAR-FTUs huggingface dataset:
Automotive radar at 80-90 GHz

The author discusses a technology for low-cost mass production of automotive radar sensors and two systems applications for such sensors. The systems applications are an intelligent cruise control (ICC), which uses a relatively simple forward-looking sensor, and the other is a more sophisticated obstacle warning radar (OWR). The technologies at 80 GHz and 90 GHz are very similar to DRIVE and PROMETHEUS automotive radar applications in Europe. Many preliminary experiments have been done at around 90 GHz. An ICC system uses a sensor with a staring antenna to measure the distance and closing velocity between a car and the vehicle in front, and uses this information to control the car's throttle and brakes to keep a safe headway between the two vehicles. An OWR would give the driver warning of any possible hazards ahead of the car. A similar sensor to that used in the ICC would be used, but with a scanning antenna to view the area in front of the car. <<ETX>>
Integrating approach to size and site at a sanitary landfill in Selangor state, Malaysia

Solid waste production increases due to population and consumption increments. Landfill is the ultimate destination for all kinds of municipal solid waste; and is the most convenient waste disposal method in developing countries. To minimize investment and operational costs and society’s opposition towards locating landfills nearby, proper landfill sizing and siting are essential. In this study, solid waste forecasting using Autoregressive Integrating Moving Average (ARIMA) was integrated with government future plans and waste composition to estimate the required landfill area for the state of Selangor, Malaysia. Landfill siting criteria were then prioritized based on expert’s preferences. To minimize ambiguity and the uncertainty of the criteria prioritizing process, the expert’s preferences were treated using integrated Median Ranked Sample Set (MRSS) and Analytic Hierarchy Process (AHP) models. The results show that the required landfill area is 342 hectares and the environmental criteria are the most important; with a priority equal to 48%.
Intelligent vehicle safety control strategy in various driving situations

This paper describes a safety control strategy for intelligent vehicles with the objective of optimally coordinating the throttle, brake, and active front steering actuator inputs to obtain both lateral stability and longitudinal safety. The control system consists of a supervisor, control algorithms, and a coordinator. From the measurement and estimation signals, the supervisor determines the active control modes among normal driving, longitudinal safety, lateral stability, and integrated safety control mode. The control algorithms consist of longitudinal and lateral stability controllers. The longitudinal controller is designed to improve the driver's comfort during normal, safe-driving situations, and to avoid rear-end collision in vehicle-following situations. The lateral stability controller is designed to obtain the required manoeuvrability and to limit the vehicle body's side-slip angle. To obtain both longitudinal safety and lateral stability control in various driving situations, the coordinator optimally determines the throttle, brake, and active front steering inputs based on the current status of the subject vehicle. Closed-loop simulations with the driver–vehicle-controller system are conducted to investigate the performance of the proposed control strategy. From these simulation results, it is shown that the proposed control algorithm assists the driver in combined severe braking/large steering manoeuvring so that the driver can maintain good manoeuvrability and prevent the vehicle from crashing in vehicle-following situations.
Contradictions as Sources of Change: A literature review on Activity Theory and the Utilisation of the Activity System in Mathematics Education

The activity system is the unit of analysis, the analytic lens at which learning is perceived, in Cultural-Historical Activity Theory (CHAT, hereafter AT). Pictorially, the activity system is represented as a triangular structure of interconnected relationships formed between its six components (subject, object, community, instruments, rules, and division of labour). The significance of the activity system hinges on its capacity to define and analyse contradictions. Contradictions is a hallmark concept within AT defined as “sources of change and development” driving the activity system (Engestrom, 2001, p 137). With an aim to understand the activity system, I first give a brief overview of its historical development, followed by an analysis of the ways in which the mathematics educational community has operationalised this unit of analysis. I argue that the activity system ought to be methodologically used in ways that allow researchers to broaden the exploration of contradictions. In particular, I suggest that nesting the activity system within broader institutional and cultural-historical contexts provides an innovative view adept for the analysis of contradictions.
SNR estimation for the baseband assembly

The expected value and the variance of the Baseband Assembly symbol signal-to-noise ratio (SNR) estimation algorithm are derived. The SNR algorithm treated here is designated as the Split Symbol Moments Estimator (SSME). It consists of averaging the first two moments of the integrated half symbols. The SSME is a biased, consistent estimator. The SNR degradation factor due to the jitter in the subcarrier demodulation and symbol synchronization loops is taken into account. Curves of the expected value of the SNR estimator versus the actual SNR are presented.
A Comparative Life Cycle Assessment Modeling of External Wall Construction Systems: Case Study Residential Complex in Al-Ain, United Arab Emirates

The construction industry is a major contributor to most countries' Gross Domestic Product (GDP), yet every year it consumes anabundance of natural resources and produces significant atmospheric environmental impacts. Countries such as the United Arab Emirates have started to develop improved efforts toward this global issue such as Estidama; a green building rating system. In this paper a Life Cycle Assessment (LCA) was performed to measure the environmental impacts of two types of exterior wall structural systems, a Light Steel Frame (LSF) and Insulating Concrete Forms (ICF). The study was performed to help an owner choose a sustainable alternative which would earn points under the materials selection category in Estidama. A two-bed room villa of 260 squaremeter was chosen for the study. Later, the four steps of the LCA: goal and scope definitions, life cycle inventory (LCI) analysis, life cycle impact assessment (LCIA) and interpretation were applied following the guidelines set by the International Standardization Organization (ISO). The results showed that ICF) has a great environmental impact during the construction phase in eight categories of the Tools for Reduction and Assessment of Chemical and Environmental Impacts (TRACI), while LSF showed higher impacts for one category, which is Ozone depletion. Although ICF has great benefits during the use phase, for this study it generated high emissions during the construction phase. Furthermore, the use of LCA shown that ICF might have contributed more toward the environmental benefits. However, applying such a green building technology like ICF in a city like Al-Ain would not enhance local industry due to the dependence on expertise and resources brought from overseas. Most of the green buildings in the UAE were constructed by specialists who were recruited from outside the UAE, due to the shortage of resources within the country.
Secondary aerosol formation from dimethyl sulfide – improved
mechanistic understanding based on smog chamber experiments
and modelling

Abstract. Dimethyl sulfide (DMS) is the dominant biogenic sulphur compound in the ambient atmosphere. Low volatile acids from DMS oxidation promote the formation and growth of sulphur aerosols, and ultimately alter cloud properties and Earth's climate. We studied the OH-initiated oxidation of DMS in the Aarhus University research on aerosols (AURA) smog chamber and the marine boundary layer (MBL) with the aerosol dynamics, gas- and particle-phase chemistry kinetic multilayer model ADCHAM. Our work involved the development of a revised and comprehensive multiphase DMS oxidation mechanism, both capable of reproducing smog chamber and atmospheric relevant conditions. The secondary aerosol mass yield in the AURA chamber was found to have a strong dependence on the reaction of methyl sulfinic acid (MSIA) and OH at low relative humidity (RH), while the autoxidation of the intermediate radical CH3SCH2OO forming hydroperoxymethyl thioformate (HPMTF) proved important at high RH. The observations and modelling strongly support that a liquid water film existed on the Teflon surface of the chamber bag, which enhanced the wall loss of water soluble intermediates and oxidants DMSO, MSIA, HPMTF, SO2, MSA, SA and H2O2. The effect caused a decrease in the secondary aerosol mass yield obtained at both dry (0–12 % RH) and humid (50–80 % RH) conditions. Model runs reproducing the ambient marine atmosphere indicate that OH comprise a strong sink of DMS in the MBL, although less important than halogen species Cl and BrO. Cloudy conditions promote the production of SO42− particular mass (PM) from SO2 accumulated in the gas-phase, while cloud-free periods facilitate MSA formation in the deliquesced particles. The exclusion of aqueous-phase chemistry lowers the DMS sink as no halogens are activated in the sea spray particles, and underestimates the secondary aerosol mass yield by neglecting SO42− and MSA PM production in the particle phase. Overall, this study demonstrated that the current DMS oxidation mechanisms reported in literature are inadequate in reproducing the results obtained in the AURA chamber, whereas the revised chemistry captured the formation, growth and chemical composition of the formed aerosol particles well. Furthermore, we emphasise the importance of OH-initiated oxidation of DMS in the ambient marine atmosphere during conditions with low sea spray emissions.
Cognitive Psychological Approach for Risk Assessment in Construction Projects

AbstractWith ever increasing complexities, construction projects are constantly exposed to a variety of risks associated with all stages of project execution from the initial assessment of strategic options through procurement, fabrication, construction, and commissioning. The successful delivery of construction projects and assurance of project objectives largely depend on the appropriate management of all project risks. One of the major steps in project risk management is to assess the potential risks. It lays the basis for selecting and implementing effective response strategies to mitigate the risks, and avoid undesirable consequences such as project delays and cost overruns. This paper proposes a new approach for risk assessment in construction projects. The approach interprets the subjective risk assessments by experts with a statistical method motivated by a cognitive psychology theory. By considering attributes of risks as random variables, experts as information processing systems, and expert opi.
Simulation of Guided Wave Inspection Based on the Reciprocity Principle and the Semi‐Analytical Finite Element Method

A model is developed to simulate guided waves (GW) inspections. It is derived from the reciprocity principle and predicts the signal received by a transducer after radiation of GWs by an emitter and their scattering by a defect. The modal solution in a guide of arbitrary section is obtained using the Semi‐Analytical Finite Element method (SAFE). Radiation by a transducer mounted on the section and scattering by a normal crack are computed by post‐processing SAFE results.
An Examination of Factor Influencing on Employee Perception towards Green Human Resource Management

There is a developing requirement for the understanding of environmental administration into (HRM) – Green HRM – explores practice. Most of individuals accept that the ability to reproduce nature in the specialized sorts like researcher, architects, legal advisors and lawmakers. Yet, today the workers of associations owe the solidarity to show the green practices which enables them to take part and include themselves in the earth the executive’s projects and practices. To keep environmental sustainability in an organization HR functions acts as an important tool to practice. This framework gives better control of company's environmental effects. The scientists led a supposition overview to know the impression of workers on the present consuming concern of Green HRM. The discoveries and consequences are introduced in this paper . The goal of this paper is to gauge and investigate the representative's observation on green human asset the executives rehearses in an association. A self-created poll is utilized as an instrument to gather the data and reaction.
Laser Beam Control System To Compensate The Turbulent Distortions Of Laser Beam At Introducing A Lead Angle

The peculiarities of laser radiation delivery to a space vehicle in the concept LOTV which are concerned to the introduction of a lead angle is considered. It is shown that the use of direct phase conjugation of radiation of a laser beacon beam placed on a space vehicle does not provide a required degree compensation of the radiation phase distortions caused by the turbulent atmosphere. Two‐circuit adaptive laser system for high — power radiation delivery is offered in this case. In the system the processes of registration of the information about atmospheric distortions and formation of radiation are functionally partitioned. A key element of the system is a hologram — corrector being phase analogue of distortion occurring in the laser beam path between the system and lead point.
Regional Agroclimate Characteristic and Its Multiple Teleconnections: A Case Study in the Jianghan Plain (JHP) Region

Agricultural production depends on local agroclimatic conditions to a great extent, affected by ENSO and other ocean-atmospheric climate modes. This paper analyzed the spatio-temporal distributions of climate elements in the Jianghan Plain (JHP), Central China, and explored the impacts from teleconnection patterns, aimed at providing references for dealing with climate change and guiding agricultural activities. Both linear and multifactorial regression models were constructed based on the frequentist quantile regression and Bayesian quantile regression method, with the daily meteorological data sets of 17 national stations in the plain and teleconnection climate characteristic indices. The results showed that precipitation in JHP had stronger spatial variability than evapotranspiration. El Niño probably induced less precipitation in summer while the weakening Arctic Oscillation might lead to more summertime precipitation. The Nash-Sutcliffe efficiency (NSE) of the multifactorial and linear regression model at the median level were 0.42–0.56 and 0.12–0.18, respectively. The mean relative error (MRE) ranged −2.95–−0.26% and −7.83–0.94%, respectively, indicating the much better fitting accuracy of the multiple climatic factors model. Meanwhile it confirmed that the agricultural climate in JHP was under the influence from multiple teleconnection patterns.
DESENVOLVIMENTO DO CONHECIMENTO PEDAGÓGICO DO CONTEÚDO (PCK) DE UMA LICENCIANDA EM QUÍMICA NO ESTÁGIO SUPERVISIONADO

RESUMO: O presente estudo tem como foco de investigação o desenvolvimento do conhecimento pedagógico do conteúdo (PCK) de uma licencianda em Química, no contexto do Estágio Supervisionado. Nosso objetivo residiu em identificar e caracterizar os conhecimentos desenvolvidos pela licencianda sob a perspectiva do PCK ao planejar e implementar atividades de ensino no Estágio de Regência. Durante esse processo, as discussões com a licencianda foram gravadas em áudio, transcritas e analisadas com base na análise textual discursiva. Em seguida, interpretamos as categorias emergentes com base no modelo de Shulman sobre o PCK e em outros modelos que dele se desdobraram. Os resultados encontrados revelam que, durante o planejamento, o PCK foi mobilizado tendo como ponto de partida o conhecimento do conteúdo, que sustentou a mobilização de outros conhecimentos da base, como o pedagógico geral e o de contexto, de acordo com os seus propósitos de ensino, as características das estratégias de ensino adotadas e as situações de ensino já vivenciadas com os alunos. Após as aulas serem ministradas, percebemos que ocorreu a ampliação do PCK da licencianda por meio de um processo reflexivo que deu origem a cinco categorias: Aprendizagem, Participação, Planejamento, Interação professor-aluno e Mediação Pedagógica do Conteúdo, que, entendemos, representam aspectos que já faziam parte do seu PCK e que se ampliaram por meio da validação da própria prática. Defendemos, portanto, que o desenvolvimento do PCK, neste caso, ocorreu de forma intermediária entre o modelo integrativo e o transformativo proposto por Gess-Newsome (1999).
Is globalisation an enabler of radical innovation in Toyota

Prior evidence from the fields of innovation management and supplier relations predicts that Japanese firms should be naturally disadvantaged in developing and deploying radical innovations. But this conclusion is inconsistent with recent developments in the automotive industry. This paper presents secondary case study data focusing on fuel cell powered vehicles and hybrid cars to show that Toyota, one of Japan's largest and most influential corporations, is capable of developing radically new technologies, and is in several respects better at this sort of innovation than the rest of the global automotive industry.
Black Holes and Purple Squirrels: A Tale of Two Online Labor Markets

The Internet and social media have fundamentally transformed the ways in which individuals find jobs. Relatively little is known about how demand-side market actors use online information and the implications for social stratification and mobility. This study provides an in-depth exploration of the online recruitment strategies pursued by human resource (HR) professionals. Qualitative interviews with 61 HR recruiters in two southern US metro areas reveal two distinct patterns in how they use Internet resources to fill jobs. For low and general skill work, they post advertisements to online job boards (e.g., Monster, CareerBuilder) with massive audiences of job seekers. By contrast, for high-skill or supervisory positions, they use LinkedIn to target passive candidates – employed individuals who are not looking for work but might be willing to change jobs. Although there are some intermediate practices, the overall picture is one of an increasingly bifurcated “winner-take-all” labor market in which recruiters focus their efforts on poaching specialized superstar talent (“purple squirrels”) from the ranks of the currently employed, while active job seekers are relegated to the hyper-competitive and impersonal “black hole” of the online job boards.
Adaptive antenna arrays using sub-space techniques in a mobile radio environment with flat fading and CCI

We compare the performance of the minimum mean square error (MMSE) and maximum signal to interference plus noise ratio (MSINR) cost functions in a flat fading channel with co-channel interference (CCI). We investigate the reduced rank and full rank weighted sub-space techniques. We observe that using the reduced rank approximation technique on MMSE is equivalent to MRC in a flat fading channel without CCI. For the CCI case we found the full rank weighted sub-space technique applied to MSINR performs best. Through reduced rank approximations of the covariance matrices, the signal sub-space performs well for the MMSE and the noise sub-space performs well for the MSINR. However, the weighted sub-space performance was close to the known rank case and much better than the conventional techniques.
Power Conversion and Control of Wind Energy Systems

Preface. List of Symbols. Acronyms and Abbreviations. 1. Introduction. 1.1 Introduction. 1.2 Overview of Wind Energy Conversion Systems. 1.3 Wind Turbine Technology. 1.4 Wind Energy Conversion System Configurations. 1.5 Grid Code. 1.6 Summary. 2. Fundamentals of Wind Energy Conversion System Control. 2.1 Introduction. 2.2 Wind Turbine Components. 2.3 Wind Turbine Aerodynamics. 2.4 Maximum Power Point Tracking (MPPT) Control. 2.5 Summary. 3. Wind Generators and Modeling. 3.1 Introduction. 3.2 Reference Frame Transformation. 3.3 Induction Generator Models. 3.4 Synchronous Generators. 3.5 Summary. 4. Power Converters in Wind Energy Conversion Systems. 4.1 Introduction. 4.2 AC Voltage Controllers (Soft Starters). 4.3 Interleaved Boost Converters. 4.4 Two-Level Voltage Source Converters. 4.5 Three-Level Neutral Point Clamped Converters. 4.6 PWM Current Source Converters. 4.7 Control of Grid-Connected Inverter. 4.8 Summary. 5. Wind Energy System Configurations. 5.1 Introduction. 5.2 Fixed Speed WECS. 5.3 Variable Speed Induction Generator WECS. 5.4 Variable-speed Synchronous Generator WECS. 5.5 Summary. 6. Fixed-Speed Induction Generator WECS. 6.1 Introduction. 6.2 Configuration of Fixed-Speed Wind Energy Systems. 6.3 Operation Principle. 6.4 Grid Connection with Soft Starter. 6.5 Reactive Power Compensation. 6.6 Summary. 7. Variable-Speed Wind Energy Systems with Squirrel Cage Induction Generators. 7.1 Introduction. 7.2 Direct Field Oriented Control. 7.3 Indirect Field Oriented Control. 7.4 Direct Torque Control. 7.5 Control of Current Source Converter Interfaced WECS. 7.6 Summary. 8. Doubly-Fed Induction Generator Based WECS. 8.1 Introduction. 8.2 Super- and Sub-synchronous Operation of DFIG. 8.3 Unity Power Factor Operation of DFIG. 8.4 Leading and Lagging Power Factor Operation. 8.5 A Steady-State Performance of DFIG WECS. 8.6 DFIG WECS Start-up and Experiments. 8.7 Summary. 9. Variable-Speed Wind Energy Systems with Synchronous Generators. 9.1 Introduction. 9.2 System Configuration. 9.3 Control of Synchronous Generators. 9.4 SG Wind Energy System with Back-to-back VSC. 9.5 DC/DC Boost Converter Interfaced SG Wind Energy Systems. 9.6 Reactive Power Control of SG WECS. 9.7 Current Source Converter Based SG Wind Energy Systems. 9.8 Summary. Appendix A. Per Unit System. Appendix B. Generator Parameters. Appendix C. Problems and Answers Manual.
UNDERVISNINGSREFLEKSJONER FRA ET KONKURRANSEPROSJEKT I SAMARBEID MED NÆRINGSLIVSAKTØR

Med rammeplanforskriften og visjonsbeskrivelsen av fremtidens ingenior som bakteppe presenteres gjennomforing av et undervisningsopplegg med naeringslivskontakt i et 10-vekttallsfag i systemutvikling og modellering i et trearig databachelorutdanningslop. I samarbeid med en bedrift som tilbyr tjenester innen regnskap, okonomistyring, informasjonsteknologi og forretningsutvikling, konkurrerte studentene om a lage den beste nettbutikklosningen hvor vinnergruppa ble honorert med hver sin iPad. Nettbutikklosningen skulle blant annet inneholde innloggingsmulighet og ha oversikt over kjopshistorikk. I tillegg skulle losningen vaere et brukervennlig verktoy for administratorer og folge krav til universell utforming. Konkurranseprosjektet ble initiert etter et prosjekt i samme fag hvor faglaererne opplevde lavere studentengasjement enn forventet. Erfaringene fra konkurranseprosjektet kan brukes som innspill til hvordan prosjekt bor legges opp for a oppna okt motivasjon i tilfeller hvor prosjektet ikke danner direkte grunnlag for karaktersettingen.