Graphical Technology Information Dissemination

Graphical technologies cover a wide range of topics from the modeling software used by animators, to algorithms used in scientific simulations of natural phenomena, to the growing 3D printing industry. While graphical technologies are still relatively new, information regarding these subjects have many outlets in the form of Internet blogs, online magazines, and websites devoted to the changes and advances of these technologies. Example topics include the latest tools in Adobe Photoshop, the algorithms used in a recently released Disney movie, or the newest video card to hit the market. This poster will present what aspects of graphical technology are of interest to different disciplines, namely programming, business, art, and engineering. These results will show which, if any, aspects of graphical technologies impact these fields, and how this technology will grow to be used in the future

Agricultural information dissemination using ICTs: a review and analysis of information dissemination models in China

Open Access funded by China Agricultural UniversityOver the last three decades, China’s agriculture sector has been transformed from the traditional to modern practice through the effective deployment of Information and Communication Technologies (ICTs). Information processing and dissemination have played a critical role in this transformation process. Many studies in relation to agriculture information services have been conducted in China, but few of them have attempted to provide a comprehensive review and analysis of different information dissemination models and their applications. This paper aims to review and identify the ICT based information dissemination models in China and to share the knowledge and experience in applying emerging ICTs in disseminating agriculture information to farmers and farm communities to improve productivity and economic, social and environmental sustainability. The paper reviews and analyzes the development stages of China’s agricultural information dissemination systems and different mechanisms for agricultural information service development and operations. Seven ICT-based information dissemination models are identified and discussed. Success cases are presented. The findings provide a useful direction for researchers and practitioners in developing future ICT based information dissemination systems. It is hoped that this paper will also help other developing countries to learn from China’s experience and best practice in their endeavor of applying emerging ICTs in agriculture information dissemination and knowledge transfer

Optimal Degree of Public Information Dissemination

Financial markets and macroeconomic environments are often characterized by positive externalities. In these environments, transparency may reduce expected welfare from an ex-ante point of view: public announcements serve as a focal point for higher-order beliefs and affect agents’ behaviour more than justified by their informational contents. Some scholars conclude that it might be better to reduce the precision of public signals or entirely withhold information. This paper shows that public information should always be provided with maximum precision, but under certain conditions not to all agents. Restricting the degree of publicity is a better-suited instrument for preventing the negative welfare effects of public announcements than restrictions on their precision are

Optimal Degree of Public Information Dissemination

Financial markets and macroeconomic environments are often characterized by positive externalities. In these environments, transparency may reduce expected welfare from an ex-ante point of view: public announcements serve as a focal point for higher-order beliefs and affect agents’ behaviour more than justified by their informational contents. Some scholars conclude that it might be better to reduce the precision of public signals or entirely withhold information. This paper shows that public information should always be provided with maximum precision, but under certain conditions not to all agents. Restricting the degree of publicity is a better-suited instrument for preventing the negative welfare effects of public announcements than restrictions on their precision are.Transparency; public information; private information; coordination; strategic complementarity

Optimal Degree of Public Information Dissemination

In currency exchange markets, there is a conflict between individual decisions and the socially optimal solution. Whereas agents have a coordination motive to take the same position, at the social level effective market coordination per se is not socially valuable, and the central bank aims at driving agents’ actions as close as possible to the economic fundamental state. Some studies argue that it might be better to withhold public information because its potential to serve as a focal point induces agents to exaggerate the importance of public announcements. This paper shows that public information should always be provided with maximum precision, but under certain condition not to all agents. Restrictions on the degree of publicity are a better instrument with which to prevent the negative welfare effects of public announcements than restrictions on their precision are. The optimal degree of publicity is always positive.transparency, public information, private information, common p-beliefs, coordination, strategic complementarity

Audit Information Dissemination, Taxpayer Communication, and Compliance Behavior

Taxpayer audits are a central feature of the voluntary compliance system in the United States federal individual income tax. Audits are thought to have a direct deterrent effect on the individuals actually audited. Audits are also believed to have an indirect deterrent effect on individuals not audited, and in fact there is some empirical evidence that audit rates affect compliance beyond the audited individuals themselves. However, empirical studies cannot measure or control for taxpayer awareness of audit risk, and they also cannot uncover the behavioral channels through which the direct and indirect effects operate; that is, the ways in which taxpayers learn about - and communicate among themselves - audit rates, and the subsequent effects on compliance, are not known and cannot be discovered by empirical studies. In this study, we use laboratory experiments to examine several types of information dissemination and taxpayer communication about audit frequency and audit results. These experiments allow us to test hypotheses about the effects of two types of communication of audit policies and results, in order to explore the direct and the indirect effects of audits: "official" information disseminated by the "government" (e.g., the experimenter) and "unofficial", or informal, communications among "taxpayers" (e.g., the subjects). Our results indicate that "unofficial" communications have a strong indirect effect on compliance: messages that indicate that a subject was not audited or was able to cheat actually reduce compliance, while messages that a subject was audited or paid his or her taxes increase compliance. Also, "official" announcements of information may not always encourage voluntary compliance. Working Paper 06-4

Universal Protocols for Information Dissemination Using Emergent Signals

We consider a population of $n$ agents which communicate with each other in a decentralized manner, through random pairwise interactions. One or more agents in the population may act as authoritative sources of information, and the objective of the remaining agents is to obtain information from or about these source agents. We study two basic tasks: broadcasting, in which the agents are to learn the bit-state of an authoritative source which is present in the population, and source detection, in which the agents are required to decide if at least one source agent is present in the population or not.We focus on designing protocols which meet two natural conditions: (1) universality, i.e., independence of population size, and (2) rapid convergence to a correct global state after a reconfiguration, such as a change in the state of a source agent. Our main positive result is to show that both of these constraints can be met. For both the broadcasting problem and the source detection problem, we obtain solutions with a convergence time of $O(\log^2 n)$ rounds, w.h.p., from any starting configuration. The solution to broadcasting is exact, which means that all agents reach the state broadcast by the source, while the solution to source detection admits one-sided error on a $\varepsilon$-fraction of the population (which is unavoidable for this problem). Both protocols are easy to implement in practice and have a compact formulation.Our protocols exploit the properties of self-organizing oscillatory dynamics. On the hardness side, our main structural insight is to prove that any protocol which meets the constraints of universality and of rapid convergence after reconfiguration must display a form of non-stationary behavior (of which oscillatory dynamics are an example). We also observe that the periodicity of the oscillatory behavior of the protocol, when present, must necessarily depend on the number ^\\# X of source agents present in the population. For instance, our protocols inherently rely on the emergence of a signal passing through the population, whose period is \Theta(\log \frac{n}{^\\# X}) rounds for most starting configurations. The design of clocks with tunable frequency may be of independent interest, notably in modeling biological networks