350 research outputs found

    Graph attribution through sub-graphs

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    We offer an alternative to the standard formalisation of attributed graphs. We propose to represent an attributed graph as a graph with a marked sub-graph, in which the sub-graph represents the data domain, rather than as a tuple of graph and algebra. This is a general construction which can be shown to preserve adhesiveness of categories; it has the advantage of uniformity and gives more flexibility in defining data abstractions. We show equivalence of our formalisation with the standard one, under a suitable encoding of algebras as graphs

    Enforcing Internationally Recognized Human Rights Violations under the Alien Tort Claims Act: An Analysis of the Ninth Circuitā€™s Decision in Doe v. Unocal Corp.

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    [Excerpt] On September 18, 2002, the Ninth Circuit Court of Appeals ruled that a United States based corporation can be held civilly liable for ā€œaiding and abettingā€ the internationally recognized human rights violation of forced labor. This case, Doe v. Unocal Corp.1 (Doe II), is significant for its ramifications to human rights litigation in United States courts as well as to future liability for multinational corporations conducting commerce in foreign states. The uniqueness of this case is found in its precedent. No prior federal court has held a corporation liable for human rights violations under the Alien Tort Claims Act. [ā€¦] This article concerns the third category, in particular, an analysis of Doe II. This article analyzes Doe II under a multi-tiered rubric. The first tier involves analyzing whether the Ninth Circuit was correct in its jurisdictional interpretation. The second tier studies the extent to which the Ninth Circuitā€™s use of international law expanded previously accepted usage by United States courts. For example, after reading Doe II, a question arises as to whether the Ninth Circuit created a ā€œcompleteā€ universal jurisdiction for torts under the ATCA. The final tier, involves analyzing foreseen legal consequences. That is, does Doe II expand causes of action for foreign human rights violations because the decision reduces possible defenses to tort claims under the ATCA? Within this multi-dimensional rubric, Doe II must be understood from its beginnings. Section II discusses the history of Doe II, primarily through two prior district court decisions. However, in order to analyze Doe II, a meaningful background to the ATCA must be determined. Section III of this paper provides this background. Particular attention is paid to the Filartiga decision and its progeny because Doe II relied, in large-part, on principles established in Filartiga. Section IV provides context for the suit, namely, the nature of human rights violations occurring in Myanmar where the plaintiffs allege the violations occurred. Section V analyzes the Ninth Circuitā€™s unique application of International Law. Section VI analyzes foreseeable consequences to defenses against ATCA suits. In particular, defenses under the act of state doctrine, dismissal under the indispensable parties rule, and forum non conveniens are addressed. This article concludes with the final assessment that while Doe II is rooted in fundamentally correct interpretations of the law, it both expands the parameters of corporate liability and it fundamentally alters the ability to defend against ATCA suits

    Specification and Construction of Control Flow Semantics

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    In this paper we propose a visual language CFSL for specifying control flow semantics of programming languages. We also present a translation from CFSL to graph production systems (GPS) for flow graph construction; that is, any CFSL specification, say for a language L, gives rise to a GPS that constructs from any L-program (represented as an abstract syntax graph) the corresponding flow graph. The specification language is rich enough to capture complex language constructs, including all of Java

    Bowel preparation quality scales for colonoscopy.

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    Colorectal cancer (CRC) is the third most common cancer and second leading cause of cancer-related death in the United States. Colonoscopy is widely preferred for CRC screening and is the most commonly used method in the United States. Adequate bowel preparation is essential for successful colonoscopy CRC screening. However, up to one-quarter of colonoscopies are associated with inadequate bowel preparation, which may result in reduced polyp and adenoma detection rates, unsuccessful screens, and an increased likelihood of repeat procedure. In addition, standardized criteria and assessment scales for bowel preparation quality are lacking. While several bowel preparation quality scales are referred to in the literature, these differ greatly in grading methodology and categorization criteria. Published reliability and validity data are available for five bowel preparation quality assessment scales, which vary in several key attributes. However, clinicians and researchers continue to use a variety of bowel preparation quality measures, including nonvalidated scales, leading to potential confusion and difficulty when comparing quality results among clinicians and across clinical trials. Optimal clinical criteria for bowel preparation quality remain controversial. The use of validated bowel preparation quality scales with stringent but simple scoring criteria would help clarify clinical trial data as well as the performance of colonoscopy in clinical practice related to quality measurements

    Engineering Object-Oriented Semantics Using Graph Transformations

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    In this paper we describe the application of the theory of graph transformations to the practise of language design. We have defined the semantics of a small but realistic object-oriented language (called TAAL) by mapping the language constructs to graphs and their operational semantics to graph transformation rules. In the process we establish a mapping between UML models and graphs. TAAL was developed for the purpose of this paper, as an extensive case study in engineering object-oriented language semantics using graph transformation. It incorporates the basic aspects of many commonly used object-oriented programming languages: apart from essential imperative programming constructs, it includes inheritance, object creation and method overriding. The language specification is based on a number of meta-models written in UML. Both the static and dynamic semantics are defined using graph rewriting rules. In the course of the case study, we have built an Eclipse plug-in that automatically transforms arbitrary TAAL programs into graphs, in a graph format readable by another tool. This second tool is called Groove, and it is able to execute graph transformations. By combining both tools we are able to visually simulate the execution of any TAAL program

    Simulating Multigraph Transformations Using Simple Graphs

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    Application of graph transformations for software verification and model transformation is an emergent field of research. In particular, graph transformation approaches provide a natural way of modelling object oriented systems and semantics of object-oriented languages.\ud \ud There exist a number of tools for graph transformations that are often specialised in a particular kind of graphs and/or graph transformation approaches, depending on the desired application domain. The main drawback of this diversity is the lack of interoperability.\ud \ud In this paper we show how (typed) multigraph production systems can be translated into (typed) simple-graph production systems. The presented construction enables the use of multigraphs with DPO transformation approach in tools that only support simple graphs with SPO transformation approach, e.g. the GROOVE tool

    Chief Justice William Howard Taft\u27s Conception of Judicial Integrity: The Legal History of \u3ci\u3eTumey v. Ohio\u3c/i\u3e

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    In 1927, Chief Justice William Howard Taft led a unanimous Court to determine that, at minimum, the right to an impartial and independent judiciary meant that the judge had to lack a personal interest in the outcome of the trial. While the decision, Tumey v. Ohio, was based on a judgeā€™s pecuniary interest, it was also part of Taftā€™s efforts to ensure that the nationā€™s judges, from the municipal courts to the Supreme Court had the publicā€™s confidence in their integrity. Tumey, therefore, is not simply a decision on pecuniary interests. It can, and should, be applied to judicial elections, including the financing of elections and limits on election speech, as well as a judgeā€™s association or relationships with the litigants

    Nearing Thirty Years: The Burger Court, Strickland v. Washington, and the Parameters of the Right to Counsel

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    In Strickland v. Washington, the Court issued a standard for determining when defense counsel\u27s ineffective performance, through no direct fault of the prosecution, law enforcement, public, or judiciary, undermined the fairness of a trial such that a conviction or sentence had to be rendered as a violation of due process. The article\u27s conclusion presents a model for applying the legal history underlying Strickland to ineffective assistance cases

    Safeguarding Judicial Integrity During the Trump Presidency: Richard Nixon\u27s Attempt to Impeach Justice William O. Douglas and the Use of National Security as a Case Study

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    In April 1970, Congressman Gerald Ford called for the impeachment of Justice William 0. Douglas. Although Douglas had been accused by anti civil rights Southern Democrats of unprofessional conduct in his association with a political foundation as well as his four marriages, Ford reasoned that, in addition to the past allegations, Justice Douglas had become a threat to national security. Within two weeks of Ford\u27s allegations, United States military forces invaded Cambodia without the express consent of Congress. Nixon\u27s involvement in Ford\u27s attempts to have Justice Douglas impeached give rise to the possibility that, in addition to trying to reshape the judiciary and further architect the Southern Strategy by bringing conservative Southern Democrats into the Republican Party, the impeachment would serve as a means to divert attention away from the Cambodian invasion. Ford\u27s irresponsible conduct in this matter (and Justice Douglas\u27s overall conduct) have never been historically addressed and, as a result, did not leave to future political leaders and judges a means by which to gauge behavior that can undermine the independence of the judicial branch. This Article is intended to provide a historical model of accountability
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