Information technology productivity has been studied on a macroeconomic level, a specific application level, as well as at a firm level. None of these studies has firmly determined whether there is an absence of productivity gains despite increased information technology expenditures (often known as the Productivity Paradox). This study reviews a specific year, 1995, using publicly available In...

This year PerCom received 208 submissions coming from 37 different countries from all five continents. The region including Europe, Middle East, and Africa was the major contributor (44%), followed by Asia/Pacific Area (29%) and North and Latin America (27%). These numbers confirm the growing interest in pervasive computing and PerCom as the international reference conference for researchers wo...

In a healthy economy, plant turnover increases aggregate productivity because efficient producers are more likely to survive. Given high entry and exit rates and the potential importance of turnover in accounting for aggregate productivity, in this paper we examine the determinants of plant exits and then examine how exits and other forms of output reallocation contribute to aggregate productiv...

"This paper steps back from the current political debate [in the United States] over the social security trust fund and examines the more general question of how serious a macroeconomic problem aging is and how policy should respond to it. We focus primarily on issues relating to saving and capital accumulation. We do not consider the broader question of whether the current U.S. national savi...

In this paper we present our work in progress on revisiting traditional DBMS mechanisms to manage space on native Flash and how it is administered by the DBA. Our observations and initial results show that: the standard logical database structures can be used for physical organization of data on native Flash; at the same time higher DBMS performance is achieved without incurring extra DBA overh...

Decision making in companies requires an assessment of the efficiency and productivity of individual inputs to provide insights into the scope for improvement of inputs' use. This paper estimates an inputspecific Luenberger productivity growth indicator that can be decomposed to identify the contributions of input-specific technological change, technical efficiency change and scale efficiency c...

This review examines the effectiveness of sit-stand workstations at reducing worker discomfort without causing a decrease in productivity. Four databases were searched for studies on sit-stand workstations, and five selection criteria were used to identify appropriate articles. Fourteen articles were identified that met at least three of the five selection criteria. Seven of the identified stud...

There is an urgent need for novel agronomic improvements capable of boosting crop yields while alleviating environmental impacts. One such approach is the use of optimized crop rotations. However, a set of measurements that can serve as guiding principles for the design of crop rotations is lacking. Crop rotations take advantage of niche complementarity, enabling the optimization of nutrient us...

In this article we explain how we apply the CIAM methodology based on the CIAN notation in order to generate user interfaces in collaborative applications. CIAM has been applied successfully in the development of desktop applications, such as Domosim-TPC, demonstrating its effectiveness in the definition of user interfaces for collaborative applications where a shared context is required. We pr...