This paper describes the new security architecture that has been implemented as part of JDK1.2, the forthcoming Java TM Development Kit. In going beyond the sandbox security model in the original release of Java, JDK1.2 provides ne-grained access control via an easily conngurable security policy. Moreover, JDK1.2 introduces the concept of protection domain and a few related security prim-itives...

Abstract. Geovisualization provides theories, methods, and tools for visualizing processes on the earth’s surface. One of key challenges field is to find interesting engaging ways display geographical data. In this paper, we focus Augmented Reality (AR) Sandbox. An AR Sandbox combines a box filled with sand 3D camera projector explore topography terrain in real time allow water flow simulations...

The purpose of this Chapter is to set concrete grounds for two arguments. The first in favor of approaching the notion of sapient systems from the unlikely perspective of stupidity. The second, in favor of paying serious attention to the environment where agents endowed with decision autonomy —be they sapient, human or otherwise— interact. Although the paper is ostensibly speculative, some conc...

Ground-coupled heat pumps usually employ fields of borehole exchangers (BHEs), which must be designed by suitable models. In order to validate a BHE model, it is advisable compare the computation results with experimental data. A well-known data set was provided Beier et al. (Geothermics 2011, 40) through laboratory model called “sandbox”. Several authors proposed estimates thermal properties s...

Regulatory sandboxes have become the latest development in regulatory reform, starting first financial regulation and now expanding to other sectors. While offer notable potential benefits for managing emerging technologies, achieving desirable policy outcomes with this novel instrument also comes technical political challenges. This article offers a framework characterize any sector, involving...

Serious Educational Games (SEG) are an increasing segment of K-18 instructional resources and have made headway into human resource and professional development training. The difficulty of creating complex adaptable learning activities can constrain SEG developers. Current SEGs tend to be narrow in content or limited in the types of learning assessed, i.e. rote practice and objective learning. ...

We propose an extension to the security model of Java. It allows for specifying, analysing and enforcing history-based policies. Policies are defined by finite state automata recognizing the permitted execution histories. Programmers can sandbox an untrusted piece of code with a policy, which is enforced at run-time through its local scope. A static analysis allows for optimizing the execution ...