In cold storage facilities of fruit and vegetables, airflow is necessary for heat removal. The design of storage facilities influences the air speed in the surrounding of the product. Therefore, knowledge about airflow next to the product is important to plan the layout of cold stores adapted to the requirements of the products. A new sensing device (ASL, Air speed logger) is developed for omni...

The design and development of a type secure persistent object store is presented as part of an architecture to support experiments in concurrency, transactions and distribution. The persistence abstraction hides the physical properties of data from the programs that manipulate it. Consequently, a persistent object store is required to be of unbounded size, infinitely fast and totally reliable. ...

This paper studies the determinants of economies scope and quantifies their impact on extensive intensive product margins in retail. We use a framework based multiproduct technology to model stores’ incentives expand variety. Using novel Swedish data categories stores, we find that high-productivity stores offer more sell products all categories. Stores with high-demand shocks specialize fewer ...