1.

Record Nr.

UNINA9910260652603321

Autore

Kaptelinin Victor

Titolo

Acting with technology : activity theory and interaction design / / Victor Kaptelinin and Bonnie A. Nardi

Pubbl/distr/stampa

Cambridge, Massachusetts : , : MIT Press, , c2006

[Piscataqay, New Jersey] : , : IEEE Xplore, , [2009]

ISBN

9786612096495

0-262-25647-9

1-282-09649-4

1-4294-1874-5

Descrizione fisica

333 p. : ill

Collana

Acting with technology

Altri autori (Persone)

NardiBonnie A

Disciplina

004.01/9

Soggetti

Human-computer interaction

Design - Human factors

User interfaces (Computer systems)

Action theory

Electronic books.

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Title from title screen.

Nota di bibliografia

Includes bibliographical references (p. [293]-324) and index.

Sommario/riassunto

Activity theory holds that the human mind is the product of our interaction with people and artifacts in the context of everyday activity. Acting with Technology makes the case for activity theory as a basis for understanding our relationship with technology. Victor Kaptelinin and Bonnie Nardi describe activity theory's principles, history, relationship to other theoretical approaches, and application to the analysis and design of technologies. The book provides the first systematic entry-level introduction to the major principles of activity theory. It describes the accumulating body of work in interaction design informed by activity theory, drawing on work from an international community of scholars and designers. Kaptelinin and Nardi examine the notion of the object of activity, describe its use in an empirical study, and discuss key debates in the development of activity theory. Finally, they outline



current and future issues in activity theory, providing a comparative analysis of the theory and its leading theoretical competitors within interaction design: distributed cognition, actor-network theory, and phenomenologically inspired approaches.

2.

Record Nr.

UNINA9910153114403321

Autore

Beecher Judith A.

Titolo

Precalculus : a right triangle approach / / Judith A. Beecher, Judith A. Penna, Marvin L. Bittinger

Pubbl/distr/stampa

Harlow, England : , : Pearson, , 2014

©2014

ISBN

1-292-03679-6

Edizione

[Fourth edition.]

Descrizione fisica

1 online resource (1,086 pages) : color illustrations, tables

Collana

Always Learning

Disciplina

512.1

Soggetti

Precalculus

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

"Pearson New International Edition."

Includes index.

Nota di contenuto

Cover -- Table of Contents -- The Basic Concepts of Algebra -- 1. Graphs, Functions, and Models -- 2. More on Functions -- 3. Quadratic Functions and Equations -- Inequalities -- 4. Polynomial Functions and Rational Functions -- 5. Exponential Functions and Logarithmic Functions -- 6. The Trigonometric Functions -- 7. Trigonometric Identities, Inverse Functions, and Equations -- 8. Applications of Trigonometry -- 9. Systems of Equations and Matrices -- 10. Analytic Geometry Topics -- 11. Sequences, Series, and Combinatorics -- Index.

Sommario/riassunto

Beecher, Penna, and Bittinger's Precalculus: A Right Triangle Approach is known for enabling students to "see the math" through its focus on visualization and early introduction to functions. With the Fourth Edition, the authors continue to innovate by incorporating more ongoing review to help students develop their understanding and study effectively.      Mid-chapter Mixed Review exercise sets have been added to give students practice in synthesizing the concepts, and new



Study Guide summaries provide built-in tools to help them prepare for tests. MyMathLab has been expanded so that the online content is even more integrated with the text's approach, with the addition of Vocabulary, Synthesis, and Mid-chapter Mixed Review exercises from the text, as well as example-based videos created by the authors.

3.

Record Nr.

UNINA9910829937003321

Autore

Wohlgemuth J (John), <1946->

Titolo

Photovoltaic module reliability / / John H. Wohlgemuth, Virginia, USA

Pubbl/distr/stampa

Hoboken, New Jersey : , : Wiley, , 2020

ISBN

1-119-45902-8

1-5231-3318-X

1-119-45901-X

1-119-45896-X

Edizione

[First edition.]

Descrizione fisica

1 online resource (266 pages)

Disciplina

505

Soggetti

Photovoltaic cells

Reliability (Engineering)

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Nota di bibliografia

Includes bibliographical references and index.

Sommario/riassunto

"This book will cover the reliability of photovoltaic modules. Since PV modules are required to produce electricity for a long time (typically 20 to 30 years) their reliability and durability are key to their commercial success. As PV has now grown into a large industry the reliability is even more critical. Failure of the modules in even one large system could lead to the loss of hundreds of millions of dollars. To understand why PV modules are usually considered a very reliable product, this book will review the history of the reliability efforts showing how field failures were used to develop accelerated stress tests that were then used to provide quick feedback on changes to the products that improved their reliability. Once the reader understands how the industry arrived at its present state, the book will turn to the future,



looking at what will be necessary in order to develop a methodology for providing a service life prediction. PV is now a fairly well known technology with many systems deployed on residential rooftops, commercial buildings and utility scale fields. This of course was not the case as recently as the mid-1990s. Module reliability has been one of the critical requirements in the growth of PV. Over this time frame the cost of PV modules has gone from more than $10/per peak watt to less than $0.5 per peak watt. During that same time period module warranties have increased to 25 years or more with the necessary reliability and durability. Going forward we expect to see module prices continue to decline as PV reaches grid parity for most if not all applications. It is imperative that the module reliability be maintained in this transition to lower cost. It is also critical that better Quality Assurance methods and improved accelerated stress tests be developed in order to provide service life predictions for deployment in any terrestrial environment. Investors want better tools for predicting the long term performance than what is available today"--