Abstract Exploiting two quasi-natural experiments, we find that firms increase emissions of toxic pollution following decreases in analyst coverage. The effects are stronger for with low initial coverage, poor corporate governance, and subject to less stringent monitoring by environmental regulators. Decreases environmental-related questions raised conference calls, an increased cost institutio...

ABSTRACT This study examines how information spillovers from equity to debt markets (“equity spillovers”) affect sell-side analysts’ activities and the informativeness of their reports. To explore this relation, I compare analyst reports for firms without (private firms) with (public firms). find that, absent spillovers, analysts rely more on mandatory SEC filings fill gap private firms. additi...

Introduction The current trend in geographic information systems (GIS) is to move away from standalone systems to those that are distributed and can provide processing capability across a network. Additionally, GIS technology is finding its way into more applications and becoming a more ubiquitous technology. Many times, users are not even aware that they are using GIS technology. As these tech...

In our previous research, we compared the actual route recorded by a GPS device “PhotoTrackr” and the optimal vehicle route derived by using ArcGIS Network Analyst tool. VRP is the fundamental problem in the research fields of transportation, we focus on variations of CVRPTW (Capacitated VRP with Time Windows). Various types of VRP are studied to determine the optimal route under various constr...

Web sites are likely to be regularly scanned and attacked by both automated and manual means. Intrusion Detection Systems (IDS) assist security analysts by automatically identifying potential attacks from network activity and produce alerts describing the details of these intrusions. However, IDS have problems, such as false positives, operational issues in high-speed environments and the diffi...

Many physical and social phenomena are embedded within networks of interdependencies, the so-called ‘context’ of these phenomena. In network analysis, this type of process is typically modeled as a network autocorrelation model. Parameter estimates and inferences based on autocorrelation models, hinge upon the chosen specification of weight matrix , the elements of which represent the influence...