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Using Multivariate Statistics

A 2dvEv- bit distributed algorithm for the directed Euler trail problem

According to W. Edwards Deming, American companies require nothing less than a transformation of management style and of governmental relations with industry. In Out of the Crisis, originally published in 1982, Deming offers a theory of management based on his famous 14 Points for Management. Management's failure to plan for the future, he claims, brings about loss of market, which brings about loss of jobs. Management must be judged not only by the quarterly dividend, but by innovative plans to stay in business, protect investment, ensure future dividends, and provide more jobs through improved product and service. In simple, direct language, he explains the principles of management transformation and how to apply them.

Out of the Crisis

The book is outstanding and admirable in many respects. ... is necessary reading for all kinds of readers from undergraduate students to top authorities in the field. Journal of Symbolic Logic Written by two experts in the field, this is the only comprehensive and unified treatment of the central ideas and their applications of Kolmogorov complexity. The book presents a thorough treatment of the subject with a wide range of illustrative applications. Such applications include the randomness of finite objects or infinite sequences, Martin-Loef tests for randomness, information theory, computational learning theory, the complexity of algorithms, and the thermodynamics of computing. It will be ideal for advanced undergraduate students, graduate students, and researchers in computer science, mathematics, cognitive sciences, philosophy, artificial intelligence, statistics, and physics. The book is self-contained in that it contains the basic requirements from mathematics and computer science. Included are also numerous problem sets, comments, source references, and hints to solutions of problems. New topics in this edition include Omega numbers, KolmogorovLoveland randomness, universal learning, communication complexity, Kolmogorov's random graphs, time-limited universal distribution, Shannon information and others.

An Introduction to Kolmogorov Complexity and Its Applications

It is desirable to store data on data storage servers such as mail servers and file servers in encrypted form to reduce security and privacy risks. But this usually implies that one has to sacrifice functionality for security. For example, if a client wishes to retrieve only documents containing certain words, it was not previously known how to let the data storage server perform the search and answer the query, without loss of data confidentiality. We describe our cryptographic schemes for the problem of searching on encrypted data and provide proofs of security for the resulting crypto systems. Our techniques have a number of crucial advantages. They are provably secure: they provide provable secrecy for encryption, in the sense that the untrusted server cannot learn anything about the plaintext when only given the ciphertext; they provide query isolation for searches, meaning that the untrusted server cannot learn anything more about the plaintext than the search result; they provide controlled searching, so that the untrusted server cannot search for an arbitrary word without the user's authorization; they also support hidden queries, so that the user may ask the untrusted server to search for a secret word without revealing the word to the server. The algorithms presented are simple, fast (for a document of length n, the encryption and search algorithms only need O(n) stream cipher and block cipher operations), and introduce almost no space and communication overhead, and hence are practical to use today.

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Practical techniques for searches on encrypted data

How do undergraduate students in engineering conceive of themselves as professionals? How can a course on engineering ethics affect the development of an undergraduate student’s professional identity? In this project, students responded to questions about the characteristics and responsibilities of professional engineers. The results indicate that students learn about professionalism primarily from relatives and co-workers who are engineers, and rarely from technical engineering courses. Even before they study engineering ethics, students put honesty and integrity on par with technical competence as an essential characteristic of engineers. In the course, students benefit from cases of actual incidents and from classroom activities that encourage diverse perspectives on moral problems. By analyzing cases in groups and by hearing different perspectives, students build self-confidence in moral reasoning. By the end of the course, some students understand professional responsibility not only as liability for blame but in a capacious sense as stewardship for society.

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Ethics and the Development of Professional Identities of Engineering Students

A Delphi process is a structured multi-step process that uses a group of experts to achieve a consensus opinion. We present the results of three Delphi processes to identify topics that are important and difficult in each of three introductory computing subjects: discrete math, programming fundamentals, and logic design. The topic rankings can be used to guide both the coverage of standardized tests of student learning (i.e., concept inventories) and can be used by instructors to identify what topics merit emphasis.

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Identifying important and difficult concepts in introductory computing courses using a delphi process

A concept inventory is a standardized assessment tool intended to evaluate a student’s understanding of the core concepts of a topic. In order to create a concept inventory it is necessary to accurately identify these core concepts. A Delphi process is a structured multi-step process that uses a group of experts to achieve a consensus opinion. We present the results of three Delphi processes to identify topics that are important and difficult in each of three introductory computing subjects: discrete mathematics, programming fundamentals, and logic design. The topic rankings can not only be used to guide the coverage of concept inventories, but can also be used by instructors to identify what topics merit special attention.

Setting the Scope of Concept Inventories for Introductory Computing Subjects

A concept inventory (CI) is a standardized assessment tool that evaluates how well a student's conceptual framework matches the accepted conceptual framework of a discipline. In this paper, we present our process in creating and evaluating the alpha version of a CI to assess student understanding of digital logic. We have checked the validity and reliability of the CI through an alpha administration, follow-up interviews with students, analysis of administration results, and expert feedback. So far the feedback on the digital logic concept inventory is positive and promising.

Creating the digital logic concept inventory

We conducted a study to demonstrate that formal training in debugging helps students develop skills in diagnosing and removing defects from computer programs. To accomplish this goal in an assembly language course, we designed multiple activities to enhance students' debugging skills. These activities included debugging exercises, debugging logs, development logs and reflective memos, and collaborative assignments. In a previous paper, we reported positive qualitative results. Students agreed that formal debugging training enhanced their debugging skills. In this paper, we present positive quantitative results that support our previous qualitative results. Students who completed the optional debugging exercises spent significantly less time on debugging their programs than those who did not. Furthermore, we develop a model of debugging abilities and habits based on students' comments in their debugging logs, development logs, reflective memos, and evaluation surveys. Students and educators could use the model to diagnose students' current debugging skills and take actions to enhance their skills.

Michael C. Loui

Papers

Ethics and the Development of Professional Identities of Engineering Students

Identifying important and difficult concepts in introductory computing courses using a delphi process

Setting the Scope of Concept Inventories for Introductory Computing Subjects

Creating the digital logic concept inventory

Debugging: from novice to expert