Miracle-dz/UniFAR-FTUs huggingface dataset:
Analysis and Simulation of Two Different Topologies of Three Phase cascaded Inverter Fed Induction Motor Drive

The main objective of this paper is to control the speed of an induction motor by using five level Cascaded H- Bridge multilevel inverter to obtain high quality sinusoidal output voltage with reducedharmonics.An open loop speed control can be achieved by changing switching frequency. Two topologies of cascaded multilevel inverter have been proposed. 1st topology requires separate DC sources and the 2nd topology requires only a single DC power source, capacitors. The inverters with a large number of stepscan generate high quality voltage waveforms. The higher levels can follow a voltage reference with accuracy and with the advantage that the generated voltage can be modulated in amplitude instead of pulse-width modulation. The simulation results shows that the proposed topologies effectively controls the motor speed through reduction in total harmonic distortion(THD). The simulation of three phase five level inverter fed induction motor model is done using Matlab/Simulink. The performance of MLI is also compared with conventional inverter in terms of THD. The FFT spectrums for the outputs are analyzed to study the reduction in the harmonics.
Política 2.0 en Ecuador. Análisis del discurso y la comunicación política en Facebook

Introducción: Las redes sociales son reconocidas por el impacto en las decisiones de los usuarios, y han sido estudiadas para determinar su incidencia en el ámbito político. Metodología: La presente investigación analiza la campaña electoral de los candidatos a presidentes de Ecuador, en el año 2021, a partir de tres objetivos: analizar la comunicación 2.0 para determinar en qué medida los candidatos establecen una relación interactiva con los electores en Facebook; analizar los elementos lingüísticos y las emociones en las publicaciones para identificar el tipo de discurso político que emplean; y determinar la agenda política digital y la oferta de campaña en las publicaciones realizadas por los presidenciables. Para alcanzar estos objetivos se implementó una metodología mixta. La investigación se desarrolló en dos etapas. En la primera etapa se aplicó el Modelo de evaluación de la comunicación 2.0 en las redes sociales, que desarrolla un análisis cualitativo, de igual forma se analizó y cuantificó somáticamente las emociones que se transmitieron en las campañas electorales y en la segunda etapa se codificó 1.543 publicaciones para identificar la oferta de campaña y la agenda política de los candidatos. Resultados: La comunicación política en las redes sociales no es estratégica, se observa un exceso de información que satura la red social y que además carece de contenido de valor para el ciudadano. Conclusiones: La comunicación política 2.0 es incipiente en Ecuador, se utiliza Facebook como un canal de comunicación tradicional, con contenido retórico, poco interesante, pero cargado de emocionalidad positiva para intentar conectar con el electorado.
Comparison of SPT-CPT Liquefaction Evaluations and CPT Interpretations

The NCEER liquefaction workshop document presented the Standard Penetration Test (SPT), and the newer Cone Penetration Test (CPT) methods to undertake liquefaction analyses, and discussed available data that supported the validity of their use. The workshop encouraged verification of CPT soil classification by site specific SPTs. It also stated that the two methods appear to correlate well in terms of predicting the occurrence of liquefaction. However, examination of recent case histories suggest that cyclic resistance ratios (CRR), and in turn factors of safety against liquefaction, may differ depending on the method used; in some cases by as much as ±30%. This paper examines those differences and poses the possibility that in some cases either the CPT or SPT base curves may not be conservative enough, and thus could lead to erroneous conclusions. On the issue of CPT interpretations this paper presents laboratory test results of fines content and Chinese criteria parameters of side-by-side probes for comparison with published CPT correlations.
Factors influencing satisfaction with a microaggression bystander intervention

ABSTRACT Racial microaggressions are receiving growing attention in the research literature, as we know that they negatively impact People of Color. We explored the impact of a bystander to microaggression workshop that was implemented at a Predominantly White Institution. Participants were randomly assigned to the workshop condition or received a control intervention about ethics that did not address microaggression. We administered pre- and posttest surveys to assess knowledge and measures to assess color-blind attitudes and the degree to which participants felt such trainings are necessary. We found that the intervention was successful in improving participants’ understanding of microaggressions and that higher endorsement of color-blind racial attitudes predicted less satisfaction with workshop, which was explained by interpretation of microaggressions unharmful. Implications and future directions for research are discussed.
DUAL NEURAL NETWORK FOR ADAPTIVE SLIDING MODE CONTROL OF QUADROTOR HELICOPTER STABILIZATION

An adaptive sliding mode control based on two neural networks is proposed in this paper for Quadrotor stabilization. This approach presents solutions to conventional control drawbacks as chattering phenomenon and dynamical model imprecision. For that reason two ANN for each quadrotor helicopter subsystem are implemented in the control loop, the first one is a Single Hidden Layer network used to approximate on line the equivalent control and the second feed-forward Network is used to estimate the ideal corrective term. The main purpose behind the use of ANN in the second part of SMC is to minimize the chattering phenomena and response time by finding optimal sliding gain and sliding surface slope. The learning algorithms of the two ANNs (equivalent and corrective controller) are obtained using the direct Lyapunov stability method. The simulation results are given to highlight the performances of the proposed control scheme.
The benefits of action on implementing carbon taxation in Ireland: a demand system approach

We employ the Affine Stone Index demand system and Irish data to quantify the distributional effects of additional carbon taxes, taking into account the monetary benefits of action. We estimated the avoided economic damages from climate change, and the monetary value of the avoided emissions using willingness to pay from the literature. When these benefits of action are included in the metric for tax incidence, the tax burden decreases considerably. In addition, when the benefits disproportionately benefit low income households, carbon taxes are no longer regressive. We also analyze a flat and a pro-poor revenue allocation. We found that while these instruments reduce vertical inequalities (i.e. across income levels), they can increase horizontal inequalities (within income levels). We show that these instruments can reduce the environmental savings attributed to the additional carbon tax. However, this problem can be minimized by a partial allocation of additional revenues.
Low density of interface trap states and temperature dependence study of Ga2O3 Schottky barrier diode with p-NiOx termination

This work acquires a vertical β-Ga2O3 Schottky barrier diode (SBD) with the advanced termination structure of p-type NiOx and n-type β-Ga2O3 heterojunctions and coupled field plate structures to alleviate the crowding electric field. A Ga2O3 SBD delivers an average breakdown voltage of 1860 V and a specific on-resistance of 3.12 mΩ cm2, yielding a state-of-the-art direct-current Baliga's power figure of merit of 1.11 GW/cm2 at an anode area of 2.83 × 10−5 cm2. In addition, the Ga2O3 SBD with the same fabrication process at a large area of 1.21 × 10−2 cm2 also presents a high forward current of 7.13 A, a breakdown voltage of 1260 V, and a power figure-of-merit of 235 MW/cm2. According to dynamic pulse switching and capacitance-frequency characteristics, an optimized p-NiOx/Ga2O3 interface with a maximum trap density of 4.13 × 1010 eV−1 cm−2 is delivered. Moreover, based on the forward current-voltage measurement at various temperatures, the physics behind a forward conduction mechanism is illustrated. Ga2O3 SBDs with p-NiOx/n-Ga2O3 heterojunction termination, field plate, high power figure of merit, and high quality interface as well as suppressed resistance increase after dynamic pulse switching, verifying their great promise for future high power applications.
Inflow Prediction and First Principles Modeling of a Coaxial Rotor Unmanned Aerial Vehicle in Forward Flight

When the speed of a coaxial rotor helicopter in forward flight increases, the wake skew angle of the rotor increases and consequently the position of the vena contracta of the upper rotor with respect to the lower rotor changes. Considering ambient air and the effect of the upper rotor, this study proposes a nonuniform inflow model for the lower rotor of a coaxial rotor helicopter in forward flight. The total required power of the coaxial rotor system was compared against Dingeldein’s experimental data, and the results of the proposed model were well matched. A plant model was also developed from first principles for flight simulation, unknown parameter estimation and control analysis. The coaxial rotor helicopter used for this study was manufactured for surveillance and reconnaissance and does not have any stabilizer bar. Therefore, a feedback controller was included during flight test and parameter estimation to overcome unstable situations. Predicted responses of parameter estimation and validation show good agreement with experimental data. Therefore, the methodology described in this paper can be used to develop numerical plant model, study non-uniform inflow model, conduct performance analysis and parameter estimation of coaxial rotor as well as other rotorcrafts in forward flight.
Control of Power Flow in Large-Scale PV Microgrid with Load Control and Energy Storage System

Today's traditional electricity grid was built to meet less overall demand, and used to distribute power to a very large number of users or consumers from a few central generators. It can support electricity output, transmission, distribution, and control operations, In short one way communication. Micro-grid, however, is a modernized grid that allows bidirectional power and data flow using twoway communication and control technologies, leading to a whole new functionalities and applications. Furthermore, it has the potential to integrate distribution generators to form a small-scale grid called a microgrid, including renewable energy. Microgrids operate in "Grid connected mode" with the main grid, or in "Island mode" independent of utility grid or main grid. The first chapter gives introduction to Micro-grid and explains it, as well takes about inspiration its necessity and other topics. The second chapter is dedicated to the description of Micro-grid simulated in this dissertation. Distribution generators are discussed with their impact while connecting it to the Micro-grid in the third. Requirements for while connecting the distributed generators to the Micro-grid are also discussed in the third chapter. This project simulate the Micro-grid in SIMULINK, MATLAB Ra2015 and explains the key components of it in forth chapter. The last section consists of Appendix A which includes calculation of the project, conclusion, recommendation and references.
Classification and Prediction of Heart Disease from Diabetes Patients using Hybrid Particle Swarm Optimization and Library Support Vector Machine Algorithm

The multi-factorial chronicle, severe disease among human is diabetes. As a result of abnormal level of glucose in body leads to heart attack, kidney disease, renal failure, Hyperglycemia and also cancer in organs like liver and pancreas. Many studies have been proved that several types of heart diseases are possible in diabetic patients having a high blood sugar. Many approaches were proposed to diagnose both Diabetes and heart diseases. Most of the diabetes people can also have heart diseases called as Diabetic Cardiomyopathy.
Covid-19 Phase II: The Lived Experiences of Nursing Mothers in a Selected Community In Pune, India

Covid-19 pandemic has caused unimaginable human suffering leading to tragic losses of human lives all over the World. It has left many people with the unprecedented challenges and fear of what could come next. When Covid hit Pune, India in the month of March 2021, the country was unprepared. Unfortunately nursing mothers were not spared by the virus. The pain mothers with young ones experienced is untold. Limited studies have been conducted on the experiences of nursing mothers who suffered from Covid. This study used the interactive theory of breastfeeding and Transcendental Phenomenology as a methodology to understand the experiences of nursing mothers affected by Covid. Purposeful sampling was used to select 3 nursing mothers who suffered with covid as participants of the study. The data was collected through in-depth interviews and analysed using thematic analysis based on the universal structure framework of Moustakas (1994). The themes that emerged indicated that the participants went through fear and anxiety, social isolation, spiritual growth and community support. The study suggests that nursing mothers should develop coping skills to reduce fear and anxiety during difficult times. Additionally, webinars on mental health for nursing mothers will be helpful in coping with fear and anxiety.
A HOLISTIC APPROACH TO PRODUCT DESIGN

The demand and expectations for manufactured products continues to grow whilst the level of technology employed in their design becoming more sophisticated and critical. As a result, in educating young designers the education philosophy employed in teaching product design demands an input from both technological and humanistic perspectives. Design demands compromise and only when due consideration is made to all relevant areas leading to optimal decisions being taken will good design result. It is imperative that engineering design students not only learn the importance of this but adopt into their design activities such a philosophy as second nature. Design output may be considered as delivering a “specification to manufacture” and accurate communication is imperative for all down-stream activities to occur. With a foundation in mathematics and sciences, the subject of technology is often shunned if not feared by design students. The challenge is to encourage and nurture appropriate skills and knowledge to enable development of the designers to meet future design industries demands. This paper discusses a project based teaching approach employing input from cross discipline sources that culminates in a major design activity in the students final year. Experience and benefits gained are described with particular emphasis being given to the way hard technology is integrated with human requirements and sociological considerations to enable optimal design decisions to be made.
Design of Automatic Carrier Landing System Based on Dynamic Inverse and PID Control

At last twenty seconds of carrier landing process, the carrier-based aircraft will encounter with strong carrier air wake which will easily cause a deviation in the aircraft's path, at the same time, a carrier also has a six-degree-of-freedom motion which depends on carrier's property and sea state (6). Without an efficient control in the aircraft, it will easily result a fatal crash. In this paper, the author use the theory of nonlinear inverse dynamics combined with PID control to design an automatic carrier landing system which can efficiently resist carrier air wake and can limit lateral position error and vertical height error in 1m and longitudinal position error in 5m on sea state level 4 in the simulation of Simulink.
Gravitational Dynamics from Multifractal Geometry

Emergent gravity builds upon the formal connection between classical Thermodynamics and the field equations of General Relativity. Drawing from the thermodynamic interpretation of multifractals, we speculate here that gravitational dynamics follows from the multifractal geometry of spacetime far above the Fermi scale. Our brief report suggests that a) informational entropy may be linked to the Beckenstein-Hawking entropy and b), Newton’s constant may be linked to the information dimension, a defining metric of multifractal scaling.
Exploratory study on innovation management in startups, an attempt to design it through the business model

Startups operate in markets where uncertainty is high. As a consequence, they must constantly adapt their Business Model (BM) to the needs and requirements of their stakeholders, leading to the adoption of more reactive and flexible management methods. Innovation is predefined by the process of implementing the invention in the market. This requires the integration of: resources, competences, partners, tools and management methods allowing to create, propose and share value from an innovative BM. This paper aims at citing the different methods of innovation management in startups in order to develop a combinatorial model linking the three approaches: Lean Startup, Effectuation and Design Thinking. By adopting an exploratory approach, we have designed this model that calls upon the different innovation management approaches that allow the successful creation, development and growth of startups. Our empirical study focuses on the innovation management process in Moroccan startups. Thanks to the LaFactoryStartup incubator, we were able to select radically innovative startups. Four out of seven companies responded favorably to our request. For confidentiality reasons, we finally conducted interviews with four startups. The four innovation phases developed (Idealization, Startup Product Design, Product Launch and Testing, Business Growth) are the main coding categories. We then defined sub-categories of coding resulting from an inductive mode of reflection from the empirical data collected. Thanks to the inter-case and intra-case analysis, we were able to build a model of innovation management in startups integrating the three innovation methods: lean startup, effectuation and design thinking.
ncidence of Delirium and Associated Mortality in ematopoietic Stem Cell Transplantation Patients

Delirium has been associated with a high risk of mortality in medical patients. Despite the high incidence of delirium in patients who undergo hemapoietic stem cell transplantation (HSCT), delirium as a risk factor for death has not been examined in this population. Thirty adult patients undergoing HSCT who were admitted to the University of Iowa Blood and Marrow Transplantation Program inpatient unit were assessed prospectively from 1 to 2 weeks before transplantation, throughout their inpatient stay, and at 100 days after transplantation. The Delirium Rating Scale and Memorial Delirium Assessment Scale were used twice weekly during the inpatient period to assess delirium severity and occurence. Patients’ self-reports of medical history, computerized medical records, and neuropsychological and psychiatric assessments were used to identify pretransplantation risk factors. The incidence of delirium (Delirium Rating Scale score >12 or Memorial Delirium Assessment Scale score >8) was 43% and occurred with highest frequency in the first 2 weeks after transplantion. The presence of delirium at any point during hospitalization after transplantation and transplant type (allogeneic) were highly predictive of mortality (p < .0005; odds ratios, 14.0 and 14.4). In conclusion, this study highlights the importance of monitoring for delirium during the acute recovery period after transplantation and suggests that early or even prophylactic treatment for delirium should be studied. Studies to determine the factors that connect delerium soon after transplantation to mortality are highly warranted. © 2006 American Society for Blood and Marrow Transplantation
Overview of European RLV Demonstrator Vehicles

The European Future Launcher Preparatory Program shall prepare Europe for a development decision for a Reusable Launch Vehicle (RLV) as a Next Generation Launcher in the timeframe of 2010. In-flight experimentation is a key element in the program plan to control technical risk and development cost of an operational RLV. This paper gives an overview of an in-flight experimentation logic based on four different experimental vehicles. Phoenix 1, a low-speed vehicle demonstrating the automatic horizontal landing of an RLV configuration on a runway; Pre-X, a reentry vehicle for the qualification of TPS material and hypersonic aerothermodynamics; Phoenix 2, a rocketpropelled vehicle to perform multiple test flights from subsonic to high supersonic speeds; ARES-H, a winged reentry vehicle demonstrating an orbital entry with a representative RLV configuration from orbit down to the subsonic regime. The paper summarizes the in-flight experimentation needs which are derived from the RLV system and technology requirements, and presents an in-flight demonstration plan, including the demonstration objectives and the mission requirements for the four RLV demonstrator vehicles.
Replaced Left Hepatic Artery: Clinical Significance and Review of the Literature

Purpose: Knowledge of hepatic arterial variations is important for surgeons and interventional radiologists in various hepatic interventions, not only for appropriate planning but also to prevent complications. Incidence of hepatic arterial variations is high, however replaced left hepatic artery is a rare variant. Methods: We conducted a retrospective review of 400 abdominal CT scans of patients referred to our department for various etiologies over a period of one year excluding patients referred for post-operative evaluation of hepato-biliary, stomach or pancreatic malignancies and post-transplant patients. Results: Our study population comprised of 222 males (55.5%) and 178 females (44.5%) with age range of 18-78 years. We found 20 cases [14 males (70%) and 6 females (30%)] of replaced left hepatic artery (age range: 23-62 years; mean42.2 + 11.2 years). An associated replaced right hepatic artery was noted in one patient (5%). Conclusion: Replaced left hepatic artery, though rare, is a variation in hepatic arterial branching pattern which has to be reported to prevent untoward event in surgical or interventional radiology procedures.
A Survey on Securing IOT Based Devices Using Cryptanalysis

: With the advancement of technologies in last few decades, the need and use of IOT devices has been increasing drastically. Internet of Things (IOT) refers to the physical devices around the globe that are connected over the internet that helps us to share the data conveniently and accurately. The main components of any IOT device are sensor, actuator and computer devices which are attached to a particular object that is connected to internet and helps in transfer of data from source to destination. There is no denying the fact that IOT devices play vital role in providing a good quality of life but at the same time it is very important to provide security to an IOT device such that our confidential information cannot be hacked. In this research paper, we will see various cryptographic algorithms that provide security to IOT devices in order to protect it from security attacks.