What is EKF?5 answersThe Extended Kalman Filter (EKF) is a state estimation method commonly used for nonlinear systems. It involves a recursive process of propagation and update steps, where measurements are incorporated to refine the state estimate. The EKF linearizes the measurement function once during the update step. In the context of attitude determination in moving objects, an EKF-based approach has been proposed to address magnetic disturbance effects on pitch and roll estimation. Additionally, the EKF has been utilized in applications such as UAV attitude control, where it works in conjunction with adaptive fuzzy PID control to enhance accuracy and stability. Moreover, EKF has been employed in improving the performance of integrated navigation systems by tightly coupling INS and GPS measurements. Furthermore, EKF has been utilized for identifying mechanical characteristics, such as stiffness and damping ratio, of walking legs based on ground reaction force measurements.
Who is the author of this theory?5 answersOscar Wilde is the author of the theory that argues for reading literary works without focusing on the author.
What is accounting theory?5 answersAccounting theory is a field of study that explains the methods and techniques used to detect creative accounting or manipulations in financial and non-financial reporting. It also explores the outcomes of using these methods and techniques, which depend on the accounting and non-accounting decisions made by forensic accountants or investigators. Accounting theory has evolved over time and is influenced by economic theory and other sciences. It provides reliable and objective information on the fair value of revenues, losses, assets, liabilities, equity, and national income generated by business entities. One important model in accounting theory is the Positive Accounting Theory, which attempts to describe and predict accounting practices based on principles from economics, such as the efficient market hypothesis, capital assets pricing model, and agency theory. Accounting theory can be used to develop theoretical models for the accounting treatment of specific transactions, such as credit card rewards programs, ensuring more consistent and accurate accounting practices. Various aspects of accounting theory are verified through logical argument, empirical evidence, predictive power, and agreed value standards.
Does EKC hypothesis exist in Bangladesh?4 answersThe Environmental Kuznets Curve (EKC) hypothesis does exist in Bangladesh. Multiple studies have provided evidence for the presence of the EKC in the country. These studies have used various econometric approaches such as the Autoregressive Distributed Lag (ARDL) model, the Fully Modified Ordinary Least Square (FMOLS) approach, and the Vector Error Correction Model (VECM) to analyze the relationship between economic growth and environmental degradation. The findings consistently show a U-shaped association between economic expansion and greenhouse gas emissions, indicating that as income initially increases, pollution also increases, but beyond a certain threshold, economic growth leads to a decline in pollution levels. The studies also highlight the importance of renewable energy sources and investment in research and development to achieve sustainable economic development and reduce pollution in Bangladesh.
What is ELM theory?5 answersELM theory is the foundation of the Extreme Learning Machine (ELM) algorithm, which is used for training single-hidden-layer feedforward neural networks. The theory states that the parameters of hidden nodes in ELM can be randomly generated and independent of training samples, contrary to the common understanding that hidden neurons need to be iteratively adjusted during training. ELM theories show that hidden neurons are important but do not need to be iteratively tuned. This allows ELM networks to achieve universal approximation and classification capability. ELM has been applied in various domains, including feature learning, clustering, regression, and classification. It has shown benefits such as improved learning speed, good generalization performance, and low complexity. ELM has also been extended to consider multisource information and applied in tasks such as multispectral palmprint recognition.
What is a theory?4 answersA theory is a set of general principles or ideas that explain how something works and is independent of what it intends to explain. It is not facts, data, a hypothesis, or a case study. Theories can be more or less abstract and can be pitched at different levels, explaining society, processes, relations, behavior, and perceptions. They help explain what causes something to occur or inform us of the likely consequences of a phenomenon. Theories enhance understanding for practitioners and shape the framing of data for researchers. Theorizing involves drawing maps with words, representing terrain in different ways. In science, theory is the formation of testable hypotheses, while empirical work involves hypothesis testing. Theories in higher education guide thinking, research, and professional action, enabling explanation, prediction, and well-guided action.