Science topic

Drive - Science topic

A state of internal activity of an organism that is a necessary condition before a given stimulus will elicit a class of responses; e.g., a certain level of hunger (drive) must be present before food will elicit an eating response.
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Publications related to Drive (10,000)
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The demand for motor drives based on multiphase machines (MMs) is increasing due to their inherent fault-tolerant capabilities. To achieve satisfactory post-fault operation, a proper fault-tolerant controller is needed. Some direct-torque-control (DTC) techniques have been reported for five-phase induction motor (FPIM) drives under an open-phase fa...
Chapter
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Chemicals used in the electronics sector and initiatives to drive safer alternatives
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Arbuscular mycorrhizal fungi (AMF) play an important role in maintaining the function and sustainability of grassland ecosystem, but they are also susceptible to environmental changes. In recent decades, alpine meadows on the Tibetan Plateau have experienced severe degradation due to the impact of human activities and climate change. But it remains...
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FROM PAST TO PRESENT POLICE RANKS IN TURKISH NATIONAL POLICE ABSTRACT Law enforcement (police) as the Ottoman State and previous periods was carried out by soldiers and other officials. Until it is called internal security service, military police units in carrying out this task. For this reason, the current sense, the police are not able to drive...
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An uninterrupted growth of vehicles on road has been a major concern in the urban areas of developing countries, leading to congestion and delay in travel time. Public transport provides accessibility and addresses the adverse effects of using private vehicles to some extent but fails to attract private vehicle users. Park-and-Ride (P&R) is one suc...
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The development of compact precision instruments has raised the growing demand for miniature actuators. However, most miniature actuators failed to achieve balanced output performances, which limits the functionality of compact precision instruments. In this paper, a novel miniature impact drive mechanism (IDM) with balanced output performances is...
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An increase in the number of residents should be anticipated including in the health sector, especially the problem of stunting. Stunting in children disrupts height and lack of absorption of nutrients. Information and data drive change in many areas such as health, entertainment, economics, business, and other strategic areas. The stages carried o...
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For a class of discrete-time high-order switched neural networks with time-varying delays, the global exponential synchronization (GES) problem and its application in audio encryption are addressed. In this work, the state feedback controllers are designed to ensure the GES of response and drive systems, and the controller gains are directly comput...
Chapter
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The paper presents a study of a metal-cutting machine rotary table with a modified worm. The research presents KOMPAS-3D CAD three-dimensional models of a machine rotary and a comprehensive calculation of a worm gear using APM Trans software. The use of a two-stage worm drive is proven to be a more efficient constructive option. The phenomena occur...
Chapter
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The present study aims at building and calculating a global static model of a long-distance single span aerial tramway with non-symmetric tracks and anchored cables at extremities. From a design engineering point of view, aerial cable transport system is a complex structure involving several theoretical and practical issues due to diversity of phen...
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CONTEXT New forms of digital information and communication technologies have the potential to provide a “next generation” of agricultural technologies, which can drive improvements in productivity and efficiency while reducing risks and negative impacts. However, such digital transformation brings with it significant socio-ethical challenges. Respo...
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Future visions of transport systems include both a drive towards automated vehicles and the need for sustainable, active, modes of travel. The combination of these requirements needs careful consideration to ensure the integration of automated vehicles does not compromise vulnerable road users. Transport networks need to be resilient to automation...
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Tau accumulation is a terminal event in neurodegenerative disorders, and because the increase of CSF tau in patients with AD occurs closer to the onset of neurodegeneration than does the decrease of Aβ42, tau has been shown to correlate to a greater extent with dementia than Aβ42, with tau aggregates predicting dementia better than Aβ deposits (Oss...
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This paper investigates how management at heritage visitor attractions (HVAs) can innovate with local stakeholders in the co-creation of value for visitors in cultural tourism experiences. Taking a case study of the UNESCO World Heritage Site Schokland in the Netherlands, thirteen interviews were conducted with management and local stakeholders ove...
Chapter
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Inspired by the famous Star Wars movie, we decide a moving and interactive robot which is similar to the BB8 character of the sequel. The proposed system is based on a low-cost set of components allowing to control the device wirelessly by means of a mobile app. The robot incorporates an mp2 module and a visual interactive system, and it could be u...
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We develop a novel numerical model incorporating a damage mechanics formulation into the particle finite element method for analysing the pre-and post-failure behaviour of faulted rock slopes. In this computational framework, the stress-driven strain localisation and damage evolution are modelled based on an isotropic damage model; discontinuity st...
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Objective Follicular helper T cells (Tfh) drive proliferation and differentiation of B cells into plasma cells, leading to antibody production; however, their role in multiple myeloma (MM) is unknown. We aimed to determine the alteration of Tfh subsets and their clinical significance in patients with MM. Method Forty-nine patients with MM were recr...
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While antibody-dependent cellular phagocytosis mediated by activating Fcγ receptor is a key mechanism underlying many antibody drugs, their full therapeutic activities can be restricted by the inhibitory Fcγ receptor IIB (FcγRIIB). Here, we describe a bispecific antibody approach that harnesses phagocytic receptor CLEC5A (C-type Lectin Domain Conta...
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This study contributes to current discussions regarding the use of digital solutions and especially (mobile) contact tracingcontact-tracing apps (MCTA) in COVID-19 containment. This study is timely because several countries around the world andworld, including African countriescountries, face an acute shortage of COVID-19 vaccines and as a result c...
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As a region that relies on the tourism sector as the priority then, when the Covid-19 pandemic hit the world, Bali became one of the most affected regions. Efforts are being made to drive the MSME sector in overcoming the financial crisis. The problem discussed was how the impact of MSMEs as the economy spearhead in the Covid-19 pandemic situation....
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Chronic inflammation drives proliferative responses, hence increasing cellular multiplication with the consequent risk of malignant transformation. Autoimmune responses against self-antigens drive chronic inflammation but may also enhance cancer immunosurveillance with the consequent reduction of tumor incidence and progression. These notions, whic...
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Due to the significant share of the induction motors (IMs) in global electricity consumption, the study of the IM in different power supply regimes is the aim of this work. In practice, these electrical receivers are not supplied from ideal voltage systems, therefore the power quality (PQ) is an important aspect in analysing the operation of this t...
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This study analyzed tourists’ activity preferences and motivations that drive them to visit farm tourism destinations and examined the relationship between them. It employed a quantitative following a descriptive-correlational research design with a total of 304 respondents who completed the researcher-administered and online survey questionnaires...
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The drag coefficient of a one-line circular patch of emergent sparse vegetation in an open-channel flow or riverbeds with varying bed roughness sizes was experimentally investigated. The total roughness of the channel was accounted for using the rate of energy dissipation that incorporated resistance by bed particles and cylinder obstacles. A total...
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Vehicular speed is a significant risk factor for road crashes globally. The first objective was to establish the proportion of motorists who drive with faulty speedometers. Second, the study sought to establish procedures used to determine speeds when speedometers are defective. The third objective was to establish the precision with which motorist...
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In today's era, supply chain functions play a significant role in every business model, whether service-based or product based. Effective and efficient supply chain practices help the business grow, provide value to its buyers, and help make rational decisions that encompass the nation's economic, social, and environmental benefits. These supply ch...
Conference Paper
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It is hard not to notice the proliferation of machine learning (ML) techniques in research and practice. Organizations globally are keen to leverage ML to drive their performance (Berente et al. 2021). Similarly, scholars are rapidly incorporating ML into their methodological toolboxes. It is surprising, however, to see a void in the discussion on...
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Herman Daly’s Economics for a Full World, by Peter Victor, provides a comprehensive overview of Daly’s thought and the life experiences that shaped it. Daly has played a key role in advancing the critique of economic growth, helping launch the field of ecological economics, and creating a foundation for many variations of post-growth thinking. This...
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There are also many industries that design and manufacture semiconductors and semiconductor-based devices such as transistors and integrated circuits. We know that industry is seen as the engine of growth for the country. Also, according to the latest report, the semiconductor industry has emerged as one of the fastest growing manufacturing sectors...
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Low-level easterly winds encircling Antarctica help drive coastal currents which modify transport of circumpolar deep water to ice shelves, and the formation and distribution of sea ice. Reanalysis datasets are especially important at high southern latitudes where observations are few. Here, we investigate the representation of the mean state and s...
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The traumatic experience leaves permanent marks on one's psyche and the victim show the sign of emotional shock either in terms of reduced communication or a total lack of speech. While trauma has been studied as a regressive mechanism, Cathy Caruth (2001) has found another aspect of trauma while studying the speech of a boy who comes across the su...
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Democratic accountability relies on voters to punish their representatives for policies they dislike. Yet, a separation-of-powers system can make it hard to know who is to blame, and partisan biases further distort voters’ evaluations. During the COVID-19 pandemic, precautionary policies were put into place sometimes by governors, sometimes by mayo...
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This article examines legal and political issues surrounding nonpoint source pollution, and concludes that political will is key to controlling nonpoint source pollution under the Clean Water Act. It begins with a short summary of the history of water quality regulation in the United States. It then discusses recent rulemaking and litigation, the C...
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Brushless DC motors are also called electric switching motors. This is because the switching process is entirely done by electronic control and not mechanically. Typical brushless DC motors use a permanent magnet rotating in the rotor and a fixed electric magnet / coil on the motor housing for the stator. However, sometimes the motor housing may be...
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Induction Motors (IM) are known to lag behind the rated speed when operating at different loads. In this context, controllers gain importance. This problem has attracted the attention of many scientists from past to present. In this study, it was carried out to increase the speed control performance of IM. Scalar Control (SC) method is used in the...
Conference Paper
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Constant learning to adapt and evolve is a strategic imperative for organisations that wish to remain competitive. But do managers from different age groups agree on the importance of organizational learning? This study focused on agricultural businesses as learning organisations to determine whether different generational cohorts of managers woul...
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Six-phase machines are increasingly used in safety-critical applications due to their inherent fault-tolerant capabilities. Due to the greater complexity of controlling six-phase machines and the fast dynamics required in safety-critical applications, finite control set model predictive control (FCS-MPC) emerged as an ideal candidate for the contro...
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The principal goal of this study is to analyze the evolution of sensor research and technologies from 1990 to 2020 to clarify outlook and future directions. This paper applies network analysis to a large dataset of publications concerning sensor research covering a 30-year period. Results show that the evolution of sensors is based on growing scien...
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This article proposes a dual space vector PWM control technique for a three-phase to five-phase quasi Z-source direct matrix converter (QZSDMC). The proposed circuit consists of a quasi-impedance source network along with a five-phase traditional matrix converter. With the observation of bidirectional operating capability and the utilization of sho...
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Many people infected with the SARS-CoV-2 suffer long-term symptoms, such as “brain fog”, fatigue and clotting problems. Explanations for “long COVID” include immune imbalance, incomplete viral clearance and potentially, mitochondrial dysfunction. As conditions with sub-optimal mitochondrial function are associated with initial severity of the disea...
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Infrastructure construction related to the new generation of information technology and 5G technology is an important measure taken by the Chinese government to promote regional economic development. Large-scale infrastructure investment is being carried out simultaneously in China's core and peripheral regions. The COVID-19 pandemic has dealt a se...
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Novelty is often depicted as the essence of travelling and is gaining attention in the tourism literature. However, the understanding of novelty is diverse, with multiple theoretical perspectives and a lack of consensus regarding its definition and conceptualisation. This study integrates different theoretical perspectives and presents an extended...
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Outer space presents construction challenges that are completely different from the terrestrial environment. They should be characterized by high resilience and indefinite durability because there is no possibility of repair during exploitation. There are drives in spacecraft control systems that are necessary to move solar panels, robotic arms, an...
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The current research of nuclear control rod drive mechanism (CRDM) movable latch only makes a simple measurement of wear mass. The wear volume and difference in various claw surfaces are ignored and the degradation mechanism of each claw surface is not clear. In this paper, a detailed degradation analysis was carried out on each claw surface of mov...
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The hydraulic elevator is both a cost-effective system and results in extremely clean building exterior lines since the usual penthouse-type machine room is eliminated. Without the need for wires, counterweights, or pulleys, this elevator can transfer people between levels. One of the most significant factors to consider when designing people's ele...
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Sensorless control techniques of electric motor dedicated to electric vehicles (EVs) offer low-cost and high operating performance. In this paper, a low-cost and robust speed-sensorless control scheme based on a second-order generalized integrator-frequency-locked loop method (SOGI-FLL) is proposed with only one current sensor. The SOGI-FLL is intr...
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span lang="EN-US">Recently, hybrid electric vehicles are increasingly being used to replace conventional vehicles. In this paper, a control methodology is designed that can reduce fuel consumption and improve the vehicle’s dynamic response. As the control unit based on this methodology consists of two levels, the first depends on the application of...
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This paper discusses a passive vibration control method to improve the shock tolerance of hard disk drives (HDDs) in operating condition (op-shock tolerance). Past works in improving the HDDs’ op-shock tolerance includes (i) parking the head when shock is detected, (ii) installing a lift-off limiter, (iii) structural modification of the suspension,...
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Living systems ensure their fitness by self-regulating. The optimal matching of their behavior to the opportunities and demands of the ever-changing natural environment is crucial for satisfying physiological and cognitive needs. Although homeostasis has explained how organisms maintain their internal states within a desirable range, the problem of...
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The oxidation of chromium in air at 700 °C was investigated with a focus on point defect behavior and transport during oxide layer growth. A comprehensive set of characterization techniques targeted characteristics of chromium oxide microstructure and chemical composition analysis. TEM showed that the oxide was thicker with longer oxidation times a...
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Automated hyperparameter optimization (HPO) has gained great popularity and is an important component of most automated machine learning frameworks. However, the process of designing HPO algorithms is still an unsystematic and manual process: New algorithms are often built on top of prior work, where limitations are identified and improvements are...
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Background Patient-reported outcomes (PROs) are used increasingly in routine clinical care and inform policies, reimbursements, and quality improvement. Less is known regarding PRO implementation in routine clinical care for diverse and underrepresented patient populations. Objective This review aims to identify studies of PRO implementation in di...
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Abstract:- Batteries are the primary energy-storage devices in application of electric vehicles. Battery fed electric drives are commonly being used for electric vehicles applications, due to various advantages, such as: approximately zero emission, definite load leveling, best transient operation and energy recovery during braking operation. To fu...
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Diabetic retinopathy is the leading cause of blindness suffered by working-age adults. The increase in the population diagnosed with DR can be prevented by screening and early treatment of eye damage. This screening process can be conducted by utilizing deep learning techniques. In this study, the detection of DR severity was carried out using the...
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Introduction NK cells play an important role in suppression of viral replication and are critical for effective control of persistent infections such as herpesviruses. Cytomegalovirus infection is associated with expansion of ‘adaptive-memory’ NK cells with a characteristic CD56dimCD16bright NKG2C+ phenotype but the mechanisms by which this populat...
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Ferroptosis is a regulated iron-dependent cell death characterized by the accumulation of lipid peroxidation. A myriad of facets linking amino acid, lipid, redox, and iron metabolisms were found to drive or to suppress the execution of ferroptosis. However, how the cells decipher the diverse pro-ferroptotic stress to activate ferroptosis remains el...
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The research proposed the design and installation of the DC motor with a feedback position used to control the steering direction of a rice-planting machine here will be converted into driverless robots. The MATLAB/Simulink software is used to simulate and measure signal drive from the servo controller board to obtain results that can be used to dr...
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How do events, especially rare external events such as financial crises, wars, natural disasters, and the COVID-19 pandemic, affect the efficacy of entrepreneurial passion to drive organizational innovation? This study investigates the moderating role of events and entrepreneurs’ competence to exploit the events (opportunity competence) in the rela...
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In recent years, research on Wireless Power Transfer and Switch Mode Power Supplies with a capacitive coupling link has been on the rise. Whereas many researchers investigate resonant coupling links, often resulting in tough requirements for the involved inductors, this paper focuses on the elimination of all inductive components in the coupling li...
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The construction of a backstepping-sliding mode control using a high-gain observer's neural network for torque estimation is presented in this research. The correctness of the load torque data is crucial to solving the two-mass system control issue. The article suggests a radial basis function neural network topology to handle load torque estimatio...
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The synchronization problem for a nonlinear dynamic fuzzy modeling of fractional-order genetic regulatory networks with adaptive feedback controllers is addressed in this article. To address such a problem, a fuzzy feedback MAX template and a fuzzy feedback MIN template of fuzzy modeling are introduced. We developed adaptive based criteria to ensur...
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The present study examined the impact of a leadership development program, Leading for Change (LfC) that focused on building the capacity of early educators to lead change as frontline leaders and change agents. Bringing together a relational-entrepreneurial leadership theory lens, the LfC was designed to foster early educators’ leadership mindset,...