articles+ search results

Power transmission, Engineering, Evaluation system, business.industry, Power system harmonics, Flicker, ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, Electrical engineering, Energy Engineering and Power Technology, Transmission system, Field tests, Voltage flicker, Hardware_INTEGRATEDCIRCUITS, Electronic engineering, Electrical and Electronic Engineering, business, ComputingMethodologies_COMPUTERGRAPHICS, and Voltage

This paper discusses an investigation of transmission system voltage flicker due to the effects of the operation of multiple AC and DC furnaces, harmonic filters, and static VAr systems. The electric utility transmission voltages are measured using a unique flicker measurement and evaluation system. The field tests are compared to an analysis of the expected flicker in the system. >

Quantum discord, Quantum dynamics, media_common.quotation_subject, Philosophy, Quantum entanglement, Theoretical physics, Open quantum system, Artificial Intelligence, Quantum mechanics, Quantum process, Quantum system, Consciousness, Quantum dissipation, and media_common

There have been suggestions that the unity of consciousness may be related to the kind of holism depicted only in quantum physics. This argument will be clarified and strengthened. It requires the brain to contain a quantum system with the right properties — a “Bose-Einstein condensate”. It probably does contain one such system, as both theory and experiment have indicated. In fact, we cannot pay full attention to a quantum whole and its parts simultaneously, though we may oscillate between the two. In a quantum theory of consciousness, emergent meanings arise as an inevitable consequence of Heisenberg's Uncertainty Principle.

Marketing, CHAOS (operating system), Social vision, Government, Chaos theory in organizational development, Public Administration, Sociology and Political Science, Managing change, Engineering ethics, Quantum, and Management

Nursing, business.industry, Health Policy, Health care, Medicine, Managed care, Sample (statistics), Health organization, Descriptive research, business, Parity (mathematics), Mental health, and Insurability

Debate continues about the cost and use of mental health services under managed care, as legislators consider various “parity” bills. This descriptive research replicates, broadens, and expands previously published case studies of single employers' data on cost and treatment prevalence in a large, diverse, national sample whose varied point-of-service benefits were provided by thirty employers representing multiple industries. Of those covered, 59,005 received treatment over the seven years studied. Of particular note is the pattern of increased use, increased care within the managed behavioral health organization network, and long-term cost reductions.

Cognitive science, Social perception, Social intuitionism, Social competence, Interpersonal communication, Psychology, Implementation, and Simulation

We introduce vibration and temperature as visceral modes to aid intuitive social perception in networked interaction. We describe two implementations of these ideas for mediated systems -- VibroBod for interpersonal communication and What's Shaking for newsgroup navigation.

Male, Social Psychology, Attitude of Health Personnel, education, Psychology, Clinical, Quality care, Ethical standards, behavioral disciplines and activities, Ethics, Professional, Professional Competence, Therapist Selection, Humans, Women, Israel, License, Referral and Consultation, General Psychology, Professional psychology, Men, Professional-Patient Relations, Psychotherapy, Public Opinion, Respondent, Female, Credentialing, Psychology, Professional Misconduct, human activities, Sexuality, and Clinical psychology

Do psychotherapists' unethical practices influence how they are perceived? The 202 Israeli lay and professional psychology participants rated systematically varied descriptions of effective therapists and potential clients under conditions of no difficulties (standard), practice without a license, and a previous sexual boundary violation on indexes of evaluation and willingness to refer. Participants completed a measure of important variables in therapist selection. Effective standard therapists were rated most favorably, unlicensed therapists were rated favorably, and therapists who violated sexual boundaries in the past were rated least favorably. When results were analyzed by respondent characteristics, laypersons rated unlicensed professionals (p < .01) and sexual boundary violators (p < .0001) more positively than did clinical psychologists. Men rated the violators more favorably than did women (p < .05). Factor analysis of therapist selection measures identified professional and personal factors, but only the former were associated with ratings of "problem" therapists. The results underscore the gap between ethical standards and applied decisions made by professionals and laypersons. Further investigation is needed to ensure quality care in both professional and consumer approaches to psychotherapy.

Engineering, Total harmonic distortion, business.industry, System integrity, Static VAR compensator, ComputerApplications_COMPUTERSINOTHERSYSTEMS, Control engineering, Inductor, Automotive engineering, Power system simulation, Distortion, business, Electric arc furnace, and Electronic circuit

Several issues concerning the application of supplementary series reactors to an existing arc furnace system are discussed in this paper. The impact on the melt shop bus voltage distortion, static VAr compensator (SVC) capacity limitations, harmonic filter duties, voltage flicker, and overall system integrity is discussed. On-site field measurement data are presented throughout the paper to show the actual plant operation. Development of circuit models for system analysis studies is also discussed. The plant production goals and operating experiences with the installation of the supplementary series reactors are also discussed.

World Wide Web, Social network, Computer science, business.industry, Human–computer interaction, InformationSystems_INFORMATIONSYSTEMSAPPLICATIONS, Interpersonal communication, and business

We present a novel application for interactively visualizing the interpersonal networks that emerge during email interactions. While people have complex email interrelationships, no previous tools allow examining one's overall network.

business.industry, Computer science, Social environment, Social relation, Visualization, World Wide Web, Visual language, Data visualization, Human–computer interaction, Salient, User interface management systems, The Internet, business, and Meaning (linguistics)

Although constructed for researchers to share news and information, Usenet quickly developed into a social environment with varied styles of interactions. Unfortunately, the browsers developed to view the shared messages fail to effectively convey the rich social features of a newsgroup, let alone all of Usenet The goal of our research is to use the salient features of social interaction to build a "legible" interactive visual representation of Usenet. We introduce our approach to developing this type of visualization, discussing our theoretical framework, questions considered to access the socially salient features, and a series of design iterations used for exploring the way to develop a visual language that conveys social meaning. Although this paper represents a work in progress, we hope that this approach and our initial iterations help build a framework for future directions.

World Wide Web, Data visualization, Digital artifact, Social network, Interview, Personal narrative, business.industry, Computer science, business, Electronic mail, and Storytelling

As part of a long-term investigation into visualizing email, we have created two visualizations of email archives. One highlights social networks while the other depicts the temporal rhythms of interactions with individuals. While interviewing users of these systems, it became clear that the applications triggered recall of many personal events. One of the most striking and not entirely expected outcomes was that the visualizations motivated retelling stories from the users' pasts to others. In this paper, we discuss the motivation and design of these projects and analyze their use as catalysts for personal narrative and recall.

World Wide Web, Ethnography, Media studies, Identity (social science), Sociology, Social community, and Social theory

This paper presents ethnographic fieldwork on Friendster, an online dating site utilizing social networks to encourage friend-of-friend connections. I discuss how Friendster applies social theory, how users react to the site, and the tensions that emerge between creator and users when the latter fails to conform to the expectations of the former. By offering this ethnographic piece as an example, I suggest how the HCI community should consider the co-evolution of the social community and the underlying technology.

inorganic chemicals, chemistry.chemical_classification, Ethylene, Schiff base, Ketone, Polymers and Plastics, Organic Chemistry, Methylaluminoxane, chemistry.chemical_element, Catalysis, Inorganic Chemistry, chemistry.chemical_compound, Chromium, Aniline, chemistry, Polymer chemistry, Pyridine, and Materials Chemistry

A family of chromium complexes bearing tridentate pyridine-based ligands are disclosed as highly active precatalysts for the oligomerization of ethylene. The ligands are comprised of two distinct types: Type 1, in which both ketone groups of 2,6-diacetylpyridine are converted to imines to produce pyridine bisimine NNN ligands; and Type 2, in which only one ketone group of 2,6-diacetylpyridine is condensed with an aniline derivative to give monoimine NNO coordination sets. Ligands of either type are coordinated to chromium(II) or chromium(III) chlorides, and activation of the resultant complexes with methylaluminoxane (MAO) produces highly active ethylene oligomerization and polymerization catalysts. Catalysts of Type 1 (NNN set) generally produce 1-butene when only two ortho alkyl substituents are present but switch to making waxes or polyethylene when the size and/or number of ortho substituents are increased. Catalysts of Type 2 (NNO set) produce waxes and polyethylene under all of the substitution pat...

Collaborative software, Multimedia, business.industry, Computer science, computer.software_genre, Variety (cybernetics), World Wide Web, Informal communication, Wireless, Human multitasking, The Internet, Instant messaging, Computer-mediated communication, business, and computer

There are a variety of digital tools for enabling people who are separated by time and space to communicate and collaborate on shared interests and tasks. The widespread use of some of these tools, such as instant messaging and group chat, coupled with the increasingly widespread availability of wireless access to the Internet (WiFi), have created new opportunities for using these collaboration tools by people sharing physical spaces in real time. The use of these tools to augment face-to-face meetings has created benefits for some participants and distractions-and detractions-for others. Our panelists will discuss some of the advantages and disadvantages of these emerging uses of collaborative tools.

Psychology

Sociology and Political Science and Communication

World Wide Web, Collaborative software, Focus (computing), Social computing, business.industry, Computer science, Instant messaging, Computer-mediated communication, Space (commercial competition), business, and Variety (cybernetics)

There are a variety of digital tools for enabling people who are physically separated by time and space to communicate and collaborate. Widespread use of some of these tools, such as instant messaging and group chat, coupled with the increasingly availability of wireless Internet access, have created new opportunities for using these collaboration tools by people sharing physical spaces in real time. Such 'digital backchannels' affect interactions and experiences in a variety of ways, depending on the spaces, the participants, and the relationships among them. We focus on the space of an academic conference, a physical space designed for voluntary participation by people with shared interests, seeking to share knowledge and connect with others. We present and analyze system logs and interview data from a recent conference, highlight some of the advantages and disadvantages experienced both by those who used the tools and by those who did not, and discuss implications and considerations for future use and research.

municipality, British Columbia, Highway 3, Crowsnest Pass, Southwestern Alberta, Rocky Mountains, and bisecting

The municipality of Crowsnest Pass is situated in a rare east-west corridor bisecting the Rocky Mountains in Southwestern Alberta and Southeastern British Columbia. Highway 3, which runs the length of the Pass, is a major transportation route supporting over 13,000 vehicles per day. Wildlife mortality, due to collisions with vehicles, has been identified as a major human-safety and wildlife-conservation issue on this stretch of highway with approximately 109 large mammal deaths per year. Another immediate threat to wildlife populations in the region is the proposed expansion and realignment of Highway 3. The expanded highway footprint and increased traffic will likely affect wildlife use in the area. It is therefore important that decision makers acquire information on where wildlife are most likely to cross the road to ensure effective mitigation measures. Currently, information pertaining to wildlife movement in the Pass is limited. Road Watch in the Pass is an innovative, community-based research project that engages local citizenry in reporting wildlife observations along Highway 3 through the Crowsnest Pass in southwestern Alberta, Canada. Through the use of a Web-based GIS, interested citizens can participate in data collection that will be instrumental to decision makers in reducing wildlife-vehicle collisions and for developing mitigation measures for highway expansion. Road Watch was designed to test and profile the use of local knowledge and volunteer data collection in the Crowsnest Pass by providing land managers and the community with valuable baseline information related to wildlife highway crossings. The goals of the project are to collect, analyze, and communicate information highlighting crossing locations of wildlife along the highway based on local knowledge and observations, as well as to engage the citizenry of the pass in local issues relating to wildlife movement and safety. The project was launched in November 2004 after considerable communication with decision makers in the Pass and the hiring of a local project coordinator. There are currently 51 active participants using the website and interactive mapping tool. The 51 participants have recorded over 581 large mammal sightings. These results are provided to the community on a regular basis through the local media, project website, and email messages. Although the project is still new in inception, preliminary results indicate that the community is successfully engaged with an average of five new volunteers joining Road Watch each month. Each volunteer has contributed an average of 12 observations, with 59 percent of the participants submitting observations on more than one occasion. The number of individual observations ranges from one to 167. Participants have recorded the full compliment of large mammals that occur in the pass, including: 243 mule deer (Odocoileus hemionus), 106 big horn sheep (Ovis canadensis), 66 white-tailed deer (Odocoileus virginianus), 64 unidentified deer species (Odocoileus spp.), 35 elk (Cervus elaphus), 30 moose (Alces alces), 11 coyotes (Canis latrans), seven black bears (Ursus americanus), three wolves (Canis lupus), three mountain goats (Oreamnos americanus), three grizzly bears (Ursus arctos horribilis) and two cougars (Puma concolor), with the exception of wolverine (Gulo gulo) and lynx (Lynx canadensis). Road Watch observations provide a valuable supplement to mortality data and have the potential to greatly enhance the existing information base. For example, the percentages of species observations from Road Watch correlate to the recorded levels of wildlife mortality, with mule deer as the highest recorded species from both data sources. From preliminary comparisons of these two data sources, we have identified zones with high Road Watch observations corresponding with low mortality records. This may indicate that there are areas where wildlife are successfully crossing, which has important implications for highway mitigation. Road Watch is an innovative initiative that will generate a unique dataset resulting from a comparative anlysis of knowledge sources. Preliminary results demonstrate that this approach increases the knowledge base by providing new emerging knowledge that would not have been explicit from a single source. This initiative also provides the opportunity for the Crowsnest Pass community to actively engage in an important wildlife-conservation issue. This information will be important to citizens in the community and local decisionmakers in relation to human safety and wildlife conservation around Highway 3.

roads, highways, QH301-705.5, wildlife, Wildlife, New Commons, Kappa index, Environmental protection, Social Organization, citizen science, Citizen science, Web application, Human safety, Biology (General), Environmental planning, QH540-549.5, Wildlife conservation, transportation, Ecology, business.industry, Road ecology, wildlife-vehicle collisions, GIS, road ecology, web-based GIS, Geography, Mortality data, Crowsnest Pass, and business

"Road Watch in the Pass is a citizen-science project that engages local citizens in reporting wildlife observations along a 44-km stretch of Highway 3 through Crowsnest Pass in southwestern Alberta, Canada. The numbers of wildlife vehicle collisions and a recent proposal to expand the highway have raised concerns from both human safety and wildlife conservation perspectives. Through the use of a web-based GIS, interested citizens can contribute information that will be instrumental in making final decisions concerning measures to mitigate the effects of highway expansion. Currently, 58 people have contributed over 713 observations to Road Watch. We performed a preliminary comparison of 11 months of Road Watch observations and wildlife mortality data for the same time period to demonstrate that the use of citizen science not only augments more conventional approaches, but also results in the emergence of new knowledge and insights. A Kappa index of agreement of 14% indicates poor agreement between the data sets, highlighting that wildlife successfully cross the highway in areas not identified by the wildlife mortality data. This has important implications for design and mitigation efforts for Highway 3 and other roadways."