Model-Based Hydrodynamic Leveling: An Impact Study on the European Vertical Reference Frame

Establishing an accurate global unified vertical reference frame (VRF) is a long-standing objective of geodesy. However, that objective has still not been achieved. One particular application where the lack of such a VRF is evident, is the improvement of hydrodynamic models by assimilating total water levels acquired by tide gauges. Indeed, to...

Realizing the European Vertical Reference System using model-based hydrodynamic leveling data

All realizations of the European Vertical Reference System (EVRS) computed so far are solely based on geopotential differences obtained by spirit leveling/gravimetry. As such, there are no direct connections between height benchmarks separated by large water bodies. In this study, such connections are added by means of model-based...

Generalized State-Space Realization of Parameter-Dependent Unsteady Aerodynamic Models: Generalized State-Space Realization of Parameter-Dependent Unsteady Aerodynamic Models

There is increasing interest in the development of next-generation optimal controllers in the aerospace industry, focused on reducing aircraft environmental impact by mass reduction and enabling higher flight velocities for flexible wing structures. A key challenge in designing an optimal control system for this purpose is modeling the unsteady...

Recognizing and realizing cactus metrics

The problem of realizing finite metric spaces in terms of weighted graphs has many applications. For example, the mathematical and computational properties of metrics that can be realized by trees have been well-studied and such research has laid the foundation of the reconstruction of phylogenetic trees from evolutionary distances. However,...

Innovative floating bifacial photovoltaic solutions for inland water areas

Photovoltaic (PV) technology has the potential to be integrated on many surfaces in various environments, even on water. Modeling, design, and realization of a floating PV system have more challenges than conventional rooftop or freestanding PV system. In this work, we introduce two innovative concepts for floating bifacial PV systems,...

Short-cyclic scheduling in construction projects: An exploratory study on finding the critical project factors for determining the appropriateness of projects for short-cyclic scheduling during the realization phase

To cope with the current problems in the construction industry, project managers and scholars seek new methods to turn the tide. Many scholars blame traditional management approaches for cost overruns and delays occurring in current projects. To find solutions, project managers introduce tools from various sectors that have coped with similar...

Employee Involvement in Strategy Realization: Designing a tool to motivate employees for strategy realization by creating a win-win between the organization's objectives and employees' interest

Strategy is used by organizations to adjust to emerging challenges and opportunities in the market environment. Due to a more rapidly changing market caused by globalization, strategy has become increasingly important. Organizations often struggle to implement strategy successfully caused by difficulties with the transition from the strategy...

A Benchmark Study on Operational Modal Analysis System Identification Algorithms for Operating Offshore Wind Turbines

Recently, Offshore Wind Turbines (OWT) have attracted great attention in an effort to make a shift from fossil-based energy sources towards an enhanced sustainable and renewable energy production. In order to achieve the renewables targets and reduce the cost of wind energy, OWTs are consistently increasing in size. Therefore, research has...

Dynamic Equivalent Based on Balanced Realizations for Interconnection of Photovoltaic Distributed System

This paper presents a hybrid methodology to analyze electromagnetic transients in a photovoltaic distributed system. The methodology consists in split the system into two parts: The external zone, where the system is reduced by a dynamic equivalent obtained by the application of Balance Realization (BR) theory and the internal zone, where the...

Subspace identification of local 1D homogeneous systems

This paper studies the local subspace identification of 1D homogeneous networked systems. The main challenge lies at the unmeasurable interconnection signals between neighboring subsystems. Since there are many unknown inputs to the concerned local system, the corresponding identification problem is semi-blind. To cope with this problem, a...

Networks and entrepreneurial behavior: Exploring their impact on the realized absorptive capacity as academic spin-offs grow older

The Egg model

The "Egg Model" is a synthetic reservoir model consisting of an ensemble of 101 relatively small three-dimensional realizations of a channelized reservoir produced under water flooding conditions with eight water injectors and four producers. It has been used in numerous publications to demonstrate a variety of aspects related to computer...

A simple algorithm to generate small geostatistical ensembles for subsurface flow simulation

This note describes the theory behind a simple Matlab program to generate ensembles of geological realizations of relatively small-scale reservoir models (permeability fields) for subsurface flow simulation. The algorithm makes use of Principal Component Analysis (PCA) to parameterize the spatial covariance of a reference image, and a Bayesian...

Enterprise resource planning systems: turning promises into performance: Modeling the business requirements for improvement of ERP system's benefit realization

Attitude development in designers' education

Modern academic design and engineering education adopted the issues and goals of holistic development of design competence. Holistic design competence is a combination of generic capacities: capability, knowledge, skill, experience and attitude. All capacities should be addressed in academic education, but the development of attitude is not...