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1. Connectedness of a Directed Graph
- www.brpreiss.com
- Connectedness of a Directed Graph.
- When dealing with directed graphs, we define two kinds of connectedness, strong and weak. Strong connectedness of a directed graph is defined as follows: .
- Definition (Strong Connectedness of a Directed Graph) A directed graph is strongly connected if there is a path in G between every pair of vertices in. ...
- For example, Figure shows the directed graph given by .
- To define weak connectedness we need to introduce first the notion of the undirected graph that underlies a directed graph: Consider a directed graph. The underlying undirected graph is the graph where represents the set of undirected edges that is obtained by removing the arrowheads from the directed edges in G: .
- Figure: An Weakly Connected Directed Graph and the Underlying Undirected Graph.
- Weak connectedness of a directed graph is defined with respect to its underlying, undirected graph: .
- Definition (Weak Connectedness of a Directed Graph) A directed graph is weakly connected if the underlying undirected graph is connected. ...
- For example, since the undirected graph in Figure is connected, the directed graph is weakly connected. Consider what happens when we remove the edge (b,e) from the directed graph. ...
- A traversal of a directed graph (either depth-first or breadth-first) starting from a given vertex will only visit all the vertices of an undirected graph if there is a path from the start vertex to every other vertex. Therefore, a simple way to test whether a directed graph is strongly connected uses traversals--one starting from each vertex in. ...
2. directed acyclic graph
- www.nist.gov
- directed acyclic graph.
- Definition: A directed graph with no path that starts and ends at the same vertex. ...
- Also known as DAG, acyclic directed graph, oriented acyclic graph. ...
- directed graph, acyclic graph. ...
3. Supporting and Facilitating Self-Directed Learning
- www.ntlf.com
- Supporting and Facilitating Self-Directed Learning .
- Perhaps because the concept is so central to what adult education is all about (Mezirow 1985), self-directed learning has been one of the field's high-interest topics for more than a decade. Researchers, theorists, and practitioners have all asked the questions: What is self-directed learning? Who is engaged in it? What are the proper roles for educators and institutions wanting to provide it?.
- WHAT IS SELF-DIRECTED LEARNING?.
- An estimated 70 percent of adult learning is self-directed learning (Cross 1981). Self-directed learning has been described as "a process in which individuals take the initiative, with or without the help of others," to diagnose their learning needs, formulate learning goals, identify resources for learning, select and implement learning strategies, and evaluate learning outcomes (Knowles 1975).
- Mocker and Spear (1982) included self-directed learning in a descriptive model of lifelong learning based entirely on the locus of control for decision making about the objectives and means of learning. The model is a two-by-two matrix of learner and institution; the self-directed learning situation occurs when learners--not the institution--control both the learning objectives and the means of learning. ...
- Thus, whether or not learning is self-directed depends not on the subject matter to be learned or on the instructional methods used. ... To the extent the learner makes those decisions, the learning is generally considered to be self-directed.
- Some self-directed learning takes place in comparative isolation in secluded libraries. Other self-directed learners engage in more interpersonal communication (with experts and peers, for instance) than is typically available in conventional classroom education.
- The resources available to self-directed learners include printed and audiovisual materials; experts interviewed by letter, telephone, or in person; cultural institutions such as museums, zoos, and arboretums; and associations of all types.
- WHO IS ENGAGED IN SELF-DIRECTED LEARNING?.
- About 90 percent of all adults conduct at least one self-directed learning project per year. ... (It is important to bear in mind that most of the research that has been conducted on self-directed learning has investigated the activities of middle-class adults. ...
4. Directed Energy Weapons
- www.fas.org
- Directed Energy Weapons.
- Developing Speed of Light Weaponry Air Force Research Laboratory Directed Energy Directorate brochure .
- Directed Energy/Space-Based Laser Ballistic Missile Defense Organization (BMDO) The Directed Energy (DE) program continues the process of integrating high power chemical laser components and technologies developed over the past 10 years specifically for the ballistic missile defense boost phase intercept mission. ...
5. LII: lexicon: directed verdict
- www.law.cornell.edu
- Directed Verdict -- What does it mean? Where does it fit?.
- Directed Verdict.
6. Combining Hierarchy and Energy Drawing Directed Graphs
- csdl.computer.org
- 46-57 Combining Hierarchy and Energy Drawing Directed Graphs .
- Abstract- We present an algorithm for drawing directed graphs which is based on rapidly solving a unique one-dimensional optimization problem for each of the axes. ... The algorithm can be applied without change to cyclic or acyclic digraphs and even to graphs containing both directed and undirected edges. ...
- Index Terms- Index Terms- Directed graph drawing, force directed layout, hierarchy energy, Fiedler vector, minimum linear arrangement. ...
7. Vocollect.com - Voice-Directed Work
- www.vocollect.com
- Each day, over 75,000 workers in hundreds of companies on five continents use Vocollect's Voice-Directed Work™ solutions to increase fulfillment accuracy, boost productivity, and improve customer satisfaction. ...
- Our Voice-Directed Work™ solutions enable your people to talk directly to your warehouse management, so data is updated real time—and your people work hands and eyes-free. With voice-directed distribution workers stay focused on the job—they're not reading a screen, pick list, or purchase order; keying in data; or juggling both product and an input device.
- With Voice-Directed Work™, customers typically reduce error rates by up to 80%, increase productivity by up to 35%, and achieve payback in one year — or less. ...
- Productivity at Associated Grocers in Baton Rouge, LA is expected to be as much as 10% higher since moving to voice-directed systems. ...
- Vocollect Voice-Directed Distribution Offering Extends Across Entire Warehouse .
- "The Sweet Life" (Stewarts Ice Cream uses Vocollect's voice-directed distribution to keep inventory accurate and have faster distribution operations. ...
8. Directed Enzyme Evolution
- www.che.caltech.edu
- DIRECTED ENZYME EVOLUTION .
- Directed evolution allows us to explore enzyme functions never required in the natural environment and for which the molecular basis is poorly understood. This bottom-up design approach contrasts with the more conventional, top-down one in which proteins are tamed `rationally' using computers and site-directed mutagenesis. I will describe how molecular evolution can be directed in the test tube in order to produce useful biocatalysts. ... With directed evolution we now have the ability to tailor individual proteins as well as whole biosynthetic and biodegradation pathways for biotechnology applications.
- Why directed evolution? .
- In contrast, a directed molecular evolution experiment has a defined goal, and the key processes--mutation, recombination and screening or selection--are controlled by the experimenter. ...
- The major steps in a typical directed enzyme evolution experiment are outlined in Figure 1. ... Clones expressing improved enzymes are identified in a high-throughput screen, or in some cases, by selection, and the gene(s) encoding those improved enzymes are isolated and recycled to the next round of directed evolution. ... Here we will focus on more fundamental considerations that help to define workable strategies for directed evolution.
- Key steps of a typical directed enzyme evolution experiment.
- To appreciate the challenge of designing and carrying out a successful directed protein evolution experiment, it is important to underscore the powerful combinatorial features of this system. ...
- More intense, directed mutation, however, may yield novel combinations of amino acid substitutions, combinations that would be inaccessible by single step walks because the intermediates are unfavorable. ...
- An effective strategy for directed enzyme evolution is one in which small changes associated with 1-2 amino acid substitutions are accumulated sequentially (a) or by recombination of improved genes (b).
- Yet another approach to creating diversity for directed evolution is the in vitro shuffling of homologous genes, or "family shuffling" Crameri et al. ...
- Good problems for directed enzyme evolution.
9. :: Directed Perception :: advanced pan tilt tracking gimbal
- www.dperception.com
- Directed Perception offers a complete line of pan & tilt devices for computer-controlled positioning of lasers, microwave antennas, thermal cameras, video cameras, IP cameras, and more in both indoor and outdoor environments. Directed Perception's pan/tilt devices offer high speed, precision, durability, and small form factors. Some of the largest companies in the world rely on Directed Perception for their pan/tilt and sensor control requirements in mission-critical applications including surveillance, sensor fusion, automated detection and tracking, robotics, communications, border security, machine vision, and automated test in military, aerospace, and industrial markets. ...
10. What Is Directed Creativity?
- www.directedcreativity.com
- What Is Directed Creativity?.
- Definition: Directed creativity is the purposeful production of creative ideas in a topic area, followed up by deliberate effort to implement some of those ideas.
- Directed creativity involves using specific techniques to perceive things freshly, break free of the current patterns stored in memory, make novel associations among concepts stored in memory, and use judgment to develop rather than reject new ideas.
- || Home Page || What's Directed Creativity? || Who's Paul Plsek? || Services ||.
11. Parameters of directed strongly regular graphs
- www.cwi.nl
- Next Previous Contents Parameters of directed strongly regular graphs.
- 010105 We give parameters, constructions and nonexistence information for directed strongly regular graphs as defined by Duval 1 . ...
12. MINIMUM DIRECTED BANDWIDTH
- www.nada.kth.se
- MINIMUM DIRECTED BANDWIDTH .
- INSTANCE: Directed acyclic graph. ...
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