A general purpose programming framework for ubiquitous computing environments

It is important to note that the need to support ad-hoc and potentially mobile arrangements of devices in ubiquitous environments does not fit well within the traditional client/server architecture. We believe peer-to-peer communication offers a preferable alternative due to its decentralised nature, removing dependence on individual nodes. However, this choice adds to the complexity of the developers task. In this paper, we describe a two-tiered approach to address this problem: A lower tier employing peer-to-peer interactions for managing the network infrastructure and an upper tier providing a mobile agent based programming framework. The result is a general purpose framework for developing ubiquitous applications and services, where the underlying complexity is hidden from the developer. This paper discusses our on-going work; presenting our design decisions, features supported by our framework, and some of the challenges still to be addressed in a complex programming environment

General-purpose and special-purpose visual systems

The information that eyes supply supports a wide variety of functions, from the guidance systems that enable an animal to navigate successfully around the environment, to the detection and identification of predators, prey, and conspecifics. The eyes with which we are most familiar the single-chambered eyes of vertebrates and cephalopod molluscs, and the compound eyes of insects and higher crustaceans allow these animals to perform the full range of visual tasks. These eyes have evidently evolved in conjunction with brains that are capable of subjecting the raw visual information to many different kinds of analysis, depending on the nature of the task that the animal is engaged in. However, not all eyes evolved to provide such comprehensive information. For example, in bivalve molluscs we find eyes of very varied design (pinholes, concave mirrors, and apposition compound eyes) whose only function is to detect approaching predators and thereby allow the animal to protect itself by closing its shell. Thus, there are special-purpose eyes as well as eyes with multiple functions

Disclosure\u27s Purpose

The United States securities regulatory infrastructure requires disclosure of a wide array of information both by and about covered companies. The basic purpose of the disclosures is to level the playing field – for investors, for issuers, and for the public. Although investor protection is the disclosure goal often touted, this article develops the purposes of disclosure extending beyond investors to issuers and the public. Indeed, the disclosure system is designed to level the playing field for issuers— addressing confidentiality concerns, for example. In addition, the system helps to promote confidence in the markets, which, in turn, enables growth and innovation by creating access to capital – goals important to issuers. Yet, as importantly, the system also protects the public more broadly. After all, the harms of market crashes and other disruptions are not confined to investors and issuers – despite the fact that writing in this space focuses largely on them. Disclosure’s purpose, then, is to diminish asymmetries and the space for fraud, both for those within the entity and for the public affected by the entity. To achieve these purposes, the system depends on gatekeepers, like corporate directors who are assigned a role in effectively managing the purpose and consequences of disclosure. Doing so requires them take ownership of both the ensuing internal discourse between the entity, its insiders, and its owners, as well as the external discourse with the entity’s public stakeholders and the public more generally. When directors do so, the resulting discourse and candor helps to ensure the purposes of disclosure are met. This article examines the purpose and regulation of this discourse, emphasizing the role of the board of directors and its attention to public stakeholders and the public, with a particular focus on omissions. The article proceeds as follows. Part I explores the purposes of disclosure in corporate discourse and how disclosure requirements are designed to transmit information. As we will see, the securities disclosure regime aims to address a broad range of issues -- from fairness to market competitiveness. Part II develops the omissions theory in the context of the purposes of disclosure, as well as explicating their role in corporate discourse. Part III turns to the board and its responsibilities with respect to the purposes of securities disclosures and corporate discourse, with a particular emphasis on omissions and candor, and deployng some case studies to develop the theories further. Part IV analyzes the relationship between directors, disclosure (and its purpose) and omissions, and publicness, tying the information-forcing-substance theory to director gatekeeping and explicating how it can result in more thorough disclosure outcomes for investors, issuers, and the public – and thereby, fulfill disclosure’s purpose

General purpose rocket furnace

A multipurpose furnace for space vehicles used for material processing experiments in an outer space environment is described. The furnace contains three separate cavities designed to process samples of the widest possible range of materials and thermal requirements. Each cavity contains three heating elements capable of independent function under the direction of an automatic and programmable control system. A heat removable mechanism is also provided for each cavity which operates in conjunction with the control system for establishing an isothermally heated cavity or a wide range of thermal gradients and cool down rates. A monitoring system compatible with the rocket telemetry provides furnace performance and sample growth rate data throughout the processing cycle

Pride, Achievement, and Purpose

Pride in our own actions tells a story: we faced a challenge, overcame it, and achieved something praiseworthy. In this paper, I draw on recent psychological literature to distinguish to between two varieties of pride, 'authentic' pride that focuses on particular efforts (like guilt) and 'hubristic' pride that focuses on the whole self (like shame). Achievement pride is fitting when either efforts or traits explain our success in meeting contextually relevant, authoritative, and challenging standards without excessive opportunity cost. When it is fitting, our lives are at least somewhat meaningful

The Lost Purpose of Learning

In the autumn of AD 386, a thirty-two-year-old academic superstar named Aurelius Augustinus made a radical move: He resigned his position as imperial professor of rhetoric in Milan and retired early. The position, as prestigious as an endowed chair of government at Harvard today, represented the pinnacle of intellectual achievement in its time. Yet Augustine was disillusioned, tired of teaching “résumé virtues” to “excellent sheep.” He complained that liberal education in the later Roman Empire had become purposeless and disoriented, preoccupied with the ephemeral aims of career, wealth, and fame. Intellectual and spiritual vitality had vanished from lecture rooms and pupils alike. The soul of education was dead