DIGITAL TWIN MODELING OF REFRIGERATED WAREHOUSES

Digital Twin of Manufacturing Systems

The digitization of manufacturing systems is at the crux of the next industrial revolutions. The digital representation of the “Physical Twin,” also known as the “Digital Twin,” will help in maintaining the process quality effectively by allowing easy visualization and incorporation of cognitive capability in the system. In this technical report, we tackle two issues regarding the Digital Twin:...

Modeling a hydropic recipient twin in twin-twin transfusion syndrome.

We developed a mathematical model of twin-twin transfusion syndrome (TTTS) that includes a hydropic recipient twin, adding interstitial and intracellular fluid compartments, fetal congestive cardiac failure, and the dynamics of renin-angiotensin system (RAS) mediators to our previous TTTS model. Ten differential equations for each twin, coupled by the net fetofetal transfusion of blood and bloo...

Modeling and Maintaining Multi-View Data Warehouses

Modeling Temporal Consistency in Data Warehouses

Real-world changes are generally discovered delayed by computer systems. The typical update patterns for traditional data warehouses on an overnight or even weekly basis enlarge this propagation delay until the information is available to knowledge workers. The main contribution of the paper is the identification of two different temporal characterizations of the information appearing in a data...

A Conceptual Modeling Approach for Data Warehouses

The multidimensional (MD) modeling, which is the foundation of data warehouses (DWs), MD databases, and On-Line Analytical Processing (OLAP) applications, is based on several properties different from those in traditional database modeling. In the past few years, there have been some proposals, providing their own formal and graphical notations, for representing the main MD properties at the co...