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1

The Effect of Varying Talker Identity and Listening Conditions on Gaze Behavior During Audiovisual Speech Perception  

PubMed Central

During face-to-face conversation the face provides auditory and visual linguistic information, and also conveys information about the identity of the speaker. This study investigated behavioral strategies involved in gathering visual information while watching talking faces. The effects of varying talker identity and varying the intelligibility of speech (by adding acoustic noise) on gaze behavior were measured with an eyetracker. Varying the intelligibility of the speech by adding noise had a noticeable effect on the location and duration of fixations. When noise was present subjects adopted a vantage point that was more centralized on the face by reducing the frequency of the fixations on the eyes and mouth and lengthening the duration of their gaze fixations on the nose and mouth. Varying talker identity resulted in a more modest change in gaze behavior that was modulated by the intelligibility of the speech. Although subjects generally used similar strategies to extract visual information in both talker variability conditions, when noise was absent there were more fixations on the mouth when viewing a different talker every trial as opposed to the same talker every trial. These findings provide a useful baseline for studies examining gaze behavior during audiovisual speech perception and perception of dynamic faces.

Buchan, Julie N.; Pare, Martin; Munhall, Kevin G.

2009-01-01

2

Learning Individual Talkers' Structural Preferences  

ERIC Educational Resources Information Center

Listeners are often capable of adjusting to the variability contained in individual talkers' (speakers') speech. The vast majority of findings on talker adaptation are concerned with learning the contingency between "phonological" characteristics and talker identity. In contrast, the present study investigates representations at a more abstract…

Kamide, Yuki

2012-01-01

3

Children and adults integrate talker and verb information in online processing.  

PubMed

Children seem able to efficiently interpret a variety of linguistic cues during speech comprehension, yet have difficulty interpreting sources of nonlinguistic and paralinguistic information that accompany speech. The current study asked whether (paralinguistic) voice-activated role knowledge is rapidly interpreted in coordination with a linguistic cue (a sentential action) during speech comprehension in an eye-tracked sentence comprehension task with children (ages 3-10 years) and college-aged adults. Participants were initially familiarized with 2 talkers who identified their respective roles (e.g., PRINCESS and PIRATE) before hearing a previously introduced talker name an action and object ("I want to hold the sword," in the pirate's voice). As the sentence was spoken, eye movements were recorded to 4 objects that varied in relationship to the sentential talker and action (target: SWORD, talker-related: SHIP, action-related: WAND, and unrelated: CARRIAGE). The task was to select the named image. Even young child listeners rapidly combined inferences about talker identity with the action, allowing them to fixate on the target before it was mentioned, although there were developmental and vocabulary differences on this task. Results suggest that children, like adults, store real-world knowledge of a talker's role and actively use this information to interpret speech. (PsycINFO Database Record (c) 2014 APA, all rights reserved). PMID:24611671

Borovsky, Arielle; Creel, Sarah C

2014-05-01

4

Neural Bases of Talker Normalization  

Microsoft Academic Search

To recognize phonemes across variation in talkers, listeners can use information about vocal characteristics, a process referred to as talker normalization. The present study investigates the cortical mechanisms underlying talker normalization using fMRI. Listeners recognized target words presented in either a spoken list produced by a single talker or a mix of different talkers. It was found that both conditions

Patrick C. M. Wong; Howard C. Nusbaum; Steven L. Small

2004-01-01

5

On-Line Acoustic and Semantic Interpretation of Talker Information  

ERIC Educational Resources Information Center

Recent work demonstrates that listeners utilize talker-specific information in the speech signal to inform real-time language processing. However, there are multiple representational levels at which this may take place. Listeners might use acoustic cues in the speech signal to access the talker's identity and information about what they tend to…

Creel, Sarah C.; Tumlin, Melanie A.

2011-01-01

6

Differences in talker recognition by preschoolers and adults.  

PubMed

Talker variability in speech influences language processing from infancy through adulthood and is inextricably embedded in the very cues that identify speech sounds. Yet little is known about developmental changes in the processing of talker information. On one account, children have not yet learned to separate speech sound variability from talker-varying cues in speech, making them more sensitive than adults to talker variation. A different account is that children are less developed than adults at recognizing speech sounds and at recognizing talkers, and development involves protracted tuning of both recognition systems. The current research presented preschoolers and adults (N=180) with voices linked to two distinct cartoon characters. After exposure, participants heard each talker and selected which character was speaking. Consistent with the protracted tuning hypothesis, children were much less accurate than adults when talkers were matched on age, gender, and dialect (Experiments 1-3), even when prosody differed (Experiment 5). Children were highly accurate when voices differed in gender (Experiment 2) or age (mother vs. daughter; Experiment 6), suggesting that greater acoustic dissimilarity facilitated encoding. Implications for speech sound processing are discussed, as are the roles of language knowledge and the nature of talker perceptual space in talker encoding. PMID:22958962

Creel, Sarah C; Jimenez, Sofia R

2012-12-01

7

Cochannel Talker Interference Suppression.  

National Technical Information Service (NTIS)

Cochannel talker interference suppression is defined as the processing of a waveform containing two simultaneous speech signals, referred to as the target and the jammer, to produce a signal containing an estimate of the target speech signal alone. The fi...

M. A. Zissman

1991-01-01

8

Effects of multiple background talkers on word recognition and response awareness  

NASA Astrophysics Data System (ADS)

Effects of background talkers (0, 1, 2, 3, 4, 5, 7, 10, and 14) on word recognition and awareness of errant/accurate responses were examined. Diagnostic Rhyme Test (DRT) words and background talkers were presented at 70 dB SPL (sound field) to ten normal-hearing subjects. DRT words and background talkers were digitally processed to produce equal VU meter levels. Three replicates were obtained for each condition. Performance measures were: (1) percent correct, corrected for guessing, transformed to rational arcsine units (PCGRAU); (2) subject's awareness of accurate responses (AA); (3) subject's awareness of errant responses (AE); and (4) a geometric-based symmetric awareness (SA). Awareness measures were derived from subject's confidence ratings to DRT stimuli. Both informational and direct masking effects were present. PCGRAU varied nonlinearly as number of talkers increased. One talker provided significantly more masking than two talkers and was equally effective as three, four, five, seven, and ten talkers as well as speech-spectrum noise. Fourteen talkers provided the most masking and was equally effective as white noise. In general, AA tended to diminish while AE tended to improve as additional background talkers were added. SA was best for 14-talker background noise but poorest for one-talker and speech-spectrum noise.

Goshorn, Edward L.; Robertson, Elizabeth K.

2003-04-01

9

Do listeners perceive coarticulatory differences for normal talkers and neurologically impaired talkers?  

NASA Astrophysics Data System (ADS)

Speech production studies suggest that the extent of coarticulation varies across talkers. The extent of coarticulation may even vary for repetitions of the same utterance produced by a single talker. Thus, an utterance or talker could be characterized by an average degree of coarticulation, a high degree of coarticulation, or a low degree of coarticulation. The perceptual consequences, if any, of this coarticulatory variability are not well understood, particularly for individuals with speech motor control disorders. The current study examined whether the listeners' speed and accuracy of vowel identification for naturally-produced CV sequences varied depending on the extent of anticipatory vowel coarticulation. Speakers and speech tokens included those characterized by an average degree of anticipatory coarticulation, a high degree of coarticulation, and a low degree of coarticulation. Healthy talkers, speakers with multiple sclerosis, and speakers with Parkinson's disease produced the stimuli. Consonants in CV syllables beginning with /s/, /k/, or /t/ followed by the vowels /i/ or /u/ were excised and presented to listeners for identification of the following vowel. While identification accuracy may be high across speakers and stimuli, the speed of response should vary with extent of coarticulation, if listeners are sensitive to coarticulatory cues in the acoustic speech stream.

Tjaden, Kris; Sussman, Joan; Yu, Ya-Ju

2003-10-01

10

The Contributions of Talker Familiarity and Individual Talker Characteristics  

ERIC Educational Resources Information Center

The article details a two-phase study investigating the relative contributions of talker-familiarity and talker-intelligibility to L2 listening comprehension by learners in a classroom setting. Students from beginning to low-intermediate German FL classes participated in German language listening tasks, being exposed to speech by their German…

Schierloh, Maren; Hayes-Harb, Rachel

2008-01-01

11

Acoustic Differences, Listener Expectations, and the Perceptual Accommodation of Talker Variability  

ERIC Educational Resources Information Center

Two talkers' productions of the same phoneme may be quite different acoustically, whereas their productions of different speech sounds may be virtually identical. Despite this lack of invariance in the relationship between the speech signal and linguistic categories, listeners experience phonetic constancy across a wide range of talkers, speaking…

Magnuson, James S.; Nusbaum, Howard C.

2007-01-01

12

Famous talker effects in spoken word recognition.  

PubMed

Previous work has demonstrated that talker-specific representations affect spoken word recognition relatively late during processing. However, participants in these studies were listening to unfamiliar talkers. In the present research, we used a long-term repetition-priming paradigm and a speeded-shadowing task and presented listeners with famous talkers. In Experiment 1, half the words were spoken by Barack Obama, and half by Hillary Clinton. Reaction times (RTs) to repeated words were shorter than those to unprimed words only when repeated by the same talker. However, in Experiment 2, using nonfamous talkers, RTs to repeated words were shorter than those to unprimed words both when repeated by the same talker and when repeated by a different talker. Taken together, the results demonstrate that talker-specific details can affect the perception of spoken words relatively early during processing when words are spoken by famous talkers. PMID:24366633

Maibauer, Alisa M; Markis, Teresa A; Newell, Jessica; McLennan, Conor T

2014-01-01

13

Understanding College Students' Spiritual Identities: Different Faiths, Varied Worldviews  

ERIC Educational Resources Information Center

This critical essay reviews Small's (2011) book reporting research on the spiritual identities and discursive practices of college students in intrafaith and interfaith dialogue. Small's recommendations and research methods are instructive and helpful to both scholars and practitioners in higher education and student affairs. This research opens…

Stewart, Dafina Lazarus

2012-01-01

14

Talker variability in audio-visual speech perception  

PubMed Central

A change in talker is a change in the context for the phonetic interpretation of acoustic patterns of speech. Different talkers have different mappings between acoustic patterns and phonetic categories and listeners need to adapt to these differences. Despite this complexity, listeners are adept at comprehending speech in multiple-talker contexts, albeit at a slight but measurable performance cost (e.g., slower recognition). So far, this talker variability cost has been demonstrated only in audio-only speech. Other research in single-talker contexts have shown, however, that when listeners are able to see a talker’s face, speech recognition is improved under adverse listening (e.g., noise or distortion) conditions that can increase uncertainty in the mapping between acoustic patterns and phonetic categories. Does seeing a talker’s face reduce the cost of word recognition in multiple-talker contexts? We used a speeded word-monitoring task in which listeners make quick judgments about target word recognition in single- and multiple-talker contexts. Results show faster recognition performance in single-talker conditions compared to multiple-talker conditions for both audio-only and audio-visual speech. However, recognition time in a multiple-talker context was slower in the audio-visual condition compared to audio-only condition. These results suggest that seeing a talker’s face during speech perception may slow recognition by increasing the importance of talker identification, signaling to the listener a change in talker has occurred.

Heald, Shannon L. M.; Nusbaum, Howard C.

2014-01-01

15

WindTalker: A P2P-Based Low-Latency Anonymous Communication Network  

NASA Astrophysics Data System (ADS)

Compared with traditional static anonymous communication networks, the P2P architecture can provide higher anonymity in communication. However, the P2P architecture also leads to more challenges, such as route, stability, trust and so on. In this paper, we present WindTalker, a P2P-based low-latency anonymous communication network. It is a pure decentralized mix network and can provide low-latency services which help users hide their real identity in communication. In order to ensure stability and reliability, WindTalker imports “seed nodes” to help a peer join in the P2P network and the peer nodes can use gossip-based protocol to exchange active information. Moreover, WindTalker uses layer encryption to ensure the information of relayed messages cannot be leaked. In addition, malicious nodes in the network are the major threat to anonymity of P2P anonymous communication, so WindTalker imports a trust mechanism which can help the P2P network exclude malicious nodes and optimize the strategy of peer discovery, tunnel construction, and relaying etc. in anonymous communications. We deploy peer nodes of WindTalker in our campus network to test reliability and analyze anonymity in theory. The network measurement and simulation analysis shows that WindTalker can provide low-latency and reliable anonymous communication services.

Zhang, Jia; Duan, Haixin; Liu, Wu; Wu, Jianping

16

Listening to speech in a background of other talkers: effects of talker number and noise vocoding.  

PubMed

Some of the most common interfering background sounds a listener experiences are the sounds of other talkers. In Experiment 1, recognition for natural Institute of Electrical and Electronics Engineers (IEEE) sentences was measured in normal-hearing adults at two fixed signal-to-noise ratios (SNRs) in 16 backgrounds with the same long-term spectrum: unprocessed speech babble (1, 2, 4, 8, and 16 talkers), noise-vocoded versions of the babbles (12 channels), noise modulated with the wide-band envelope of the speech babbles, and unmodulated noise. All talkers were adult males. For a given number of talkers, natural speech was always the most effective masker. The greatest changes in performance occurred as the number of talkers in the maskers increased from 1 to 2 or 4, with small changes thereafter. In Experiment 2, the same targets and maskers (1, 2, and 16 talkers) were used to measure speech reception thresholds (SRTs) adaptively. Periodicity in the target was also manipulated by noise-vocoding, which led to considerably higher SRTs. The greatest masking effect always occurred for the masker type most similar to the target, while the effects of the number of talkers were generally small. Implications are drawn with reference to glimpsing, informational vs energetic masking, overall SNR, and aspects of periodicity. PMID:23556608

Rosen, Stuart; Souza, Pamela; Ekelund, Caroline; Majeed, Arooj A

2013-04-01

17

Listening to speech in a background of other talkers: Effects of talker number and noise vocoding  

PubMed Central

Some of the most common interfering background sounds a listener experiences are the sounds of other talkers. In Experiment 1, recognition for natural Institute of Electrical and Electronics Engineers (IEEE) sentences was measured in normal-hearing adults at two fixed signal-to-noise ratios (SNRs) in 16 backgrounds with the same long-term spectrum: unprocessed speech babble (1, 2, 4, 8, and 16 talkers), noise-vocoded versions of the babbles (12 channels), noise modulated with the wide-band envelope of the speech babbles, and unmodulated noise. All talkers were adult males. For a given number of talkers, natural speech was always the most effective masker. The greatest changes in performance occurred as the number of talkers in the maskers increased from 1 to 2 or 4, with small changes thereafter. In Experiment 2, the same targets and maskers (1, 2, and 16 talkers) were used to measure speech reception thresholds (SRTs) adaptively. Periodicity in the target was also manipulated by noise-vocoding, which led to considerably higher SRTs. The greatest masking effect always occurred for the masker type most similar to the target, while the effects of the number of talkers were generally small. Implications are drawn with reference to glimpsing, informational vs energetic masking, overall SNR, and aspects of periodicity.

Rosen, Stuart; Souza, Pamela; Ekelund, Caroline; Majeed, Arooj A

2013-01-01

18

Effects of Talker Variability on Perceptual Learning of Dialects  

PubMed Central

Two groups of listeners learned to categorize a set of unfamiliar talkers by dialect region using sentences selected from the TIMIT speech corpus. One group learned to categorize a single talker from each of six American English dialect regions. A second group learned to categorize three talkers from each dialect region. Following training, both groups were asked to categorize new talkers using the same categorization task. While the single-talker group was more accurate during initial training and test phases when familiar talkers produced the sentences, the three-talker group performed better on the generalization task with unfamiliar talkers. This cross-over effect in dialect categorization suggests that while talker variation during initial perceptual learning leads to more difficult learning of specific exemplars, exposure to intertalker variability facilitates robust perceptual learning and promotes better categorization performance of unfamiliar talkers. The results suggest that listeners encode and use acoustic-phonetic variability in speech to reliably perceive the dialect of unfamiliar talkers.

Clopper, Cynthia G.; Pisoni, David B.

2012-01-01

19

The effect of talker and intonation variability on speech perception in noise in children with dyslexia  

PubMed Central

Purpose To determine whether children with dyslexia (DYS) are more affected than age-matched average readers (AR) by talker and intonation variability when perceiving speech in noise. Method Thirty-four DYS and 25 AR children were tested on their perception of consonants in naturally-produced consonant-vowel (CV) tokens in multi-talker babble. Twelve CVs were presented for identification in four conditions varying in the degree of talker and intonation variability. Consonant place (/bi/-/di/) and voicing (/bi/-/pi/) discrimination was investigated with the same conditions. Results DYS children made slightly more identification errors than AR children but only for conditions with variable intonation. Errors were more frequent for a subset of consonants, generally weakly-encoded for AR children, for tokens with intonation patterns (steady and rise-fall) that occur infrequently in connected discourse. In discrimination tasks, which have a greater memory and cognitive load, DYS children scored lower than AR children across all conditions. Conclusions Unusual intonation patterns had a disproportionate (but small) effect on consonant intelligibility in noise for DYS children but adding talker variability did not. DYS children do not appear to have a general problem in perceiving speech in degraded conditions, which makes it unlikely that they lack robust phonological representations.

Hazan, Valerie; Messaoud-Galusi, Souhila; Rosen, Stuart

2013-01-01

20

Conversational Patterns in Late Talkers at Age 3.  

ERIC Educational Resources Information Center

Topic choice, topic synchrony, and utterance function during mother-child play sessions at age 3 were examined in 32 late talkers and 21 comparison children, matched at intake on age, socioeconomic status, and nonverbal ability. Late talkers and comparison children did not differ in number of utterances, topic initiation, topic synchrony, use of…

Rescorla, Leslie; Bascome, Arlita; Lampard, Jarlette; Feeny, Norah

2001-01-01

21

The Effect of Talker Variability on Word Recognition in Preschool Children  

PubMed Central

In a series of experiments, the authors investigated the effects of talker variability on children’s word recognition. In Experiment 1, when stimuli were presented in the clear, 3- and 5-year-olds were less accurate at identifying words spoken by multiple talkers than those spoken by a single talker when the multiple-talker list was presented first. In Experiment 2, when words were presented in noise, 3-, 4-, and 5-year-olds again performed worse in the multiple-talker condition than in the single-talker condition, this time regardless of order; processing multiple talkers became easier with age. Experiment 3 showed that both children and adults were slower to repeat words from multiple-talker than those from single-talker lists. More important, children (but not adults) matched acoustic properties of the stimuli (specifically, duration). These results provide important new information about the development of talker normalization in speech perception and spoken word recognition.

Ryalls, Brigette Oliver; Pisoni, David B.

2012-01-01

22

Courtship attention in sagebrush lizards varies with male identity and female reproductive state  

PubMed Central

Previous experiments suggest that males spend more time with the more receptive of 2 novel females or the one with the higher fitness potential. However, males often court individual females repeatedly over a season; for example, male lizards sequentially visit familiar females as they patrol territorial boundaries. It may benefit males to vary display intensity as they move between multiple females. In this study, we explored the factors influencing amount of male courtship to familiar females in the sagebrush lizard, Sceloporus graciosus. We tested whether males vary the amount of courtship exhibited due to individual differences among males, female reproductive state, or female fitness potential. Each male was allowed to interact separately, but repeatedly, with 2 females until both females laid eggs. Male courtship behavior with each of the 2 females was assayed at an intermediate point, after 3 weeks of interaction. We found that individual differences among males were considerable. The number of male courtship displays was also positively correlated with female latency to lay eggs, with males displaying more often toward females with eggs that had not yet been fertilized. Courtship behavior was not well predicted by the number of eggs laid or by female width, both measures of female quality. Thus, male S. graciosus appear to alter courtship intensity more in response to signals of female reproductive state than in response to variation in potential female fitness.

Davis, Erica; Martins, Emilia P.

2008-01-01

23

Trend towards varying combinatorial centromere association in morphologically identical clusters in Purkinje neurons  

PubMed Central

Neurons with similar morphology and neurotransmitter content located at a specific brain region may be part of the same or functionally separate networks. To address the question whether morphologically similar neurons have similar structural architecture at the chromosomal level, we studied Purkinje neurons in the cerebellum. Previous studies have shown that in Purkinje neurons centromeres of several chromosomes form clusters and that the number and size of these clusters remain stable in the adult brain. We examined whether the same set of centromeres form clusters in all the Purkinje neurons. Fluorescent in situ hybridization (FISH) with chromosome-specific para-centromeric probes provided an indirect evidence for a trend towards varying contributions from different chromosomes forming the centromeric clusters in adjacent Purkinje neurons. The results of the study indicate that the individual Purkinje neurons are likely unique in inter-chromosomal spatial associations.

Vadakkan, Kunjumon I; Li, Baoxiang; De Boni, Umberto

2006-01-01

24

Children's Perception of Speech Produced in a Two-Talker Background  

ERIC Educational Resources Information Center

Purpose: This study evaluated the degree to which children benefit from the acoustic modifications made by talkers when they produce speech in noise. Method: A repeated measures design compared the speech perception performance of children (5-11 years) and adults in a 2-talker masker. Target speech was produced in a 2-talker background or in…

Baker, Mallory; Buss, Emily; Jacks, Adam; Taylor, Crystal; Leibold, Lori J.

2014-01-01

25

Age-Related Changes to Spectral Voice Characteristics Affect Judgments of Prosodic, Segmental, and Talker Attributes for Child and Adult Speech  

ERIC Educational Resources Information Center

Purpose: As children mature, changes in voice spectral characteristics co-vary with changes in speech, language, and behavior. In this study, spectral characteristics were manipulated to alter the perceived ages of talkers' voices while leaving critical acoustic-prosodic correlates intact, to determine whether perceived age differences were…

Dilley, Laura C.; Wieland, Elizabeth A.; Gamache, Jessica L.; McAuley, J. Devin; Redford, Melissa A.

2013-01-01

26

Bimodal Hearing and Speech Perception with a Competing Talker  

ERIC Educational Resources Information Center

Purpose: The objective of the study was to investigate the influence of bimodal stimulation upon hearing ability for speech recognition in the presence of a single competing talker. Method: Speech recognition was measured in 3 listening conditions: hearing aid (HA) alone, cochlear implant (CI) alone, and both devices together (CI + HA). To examine…

Pyschny, Verena; Landwehr, Markus; Hahn, Moritz; Walger, Martin; von Wedel, Hasso; Meister, Hartmut

2011-01-01

27

Pragmatic Functions of Toddlers Who Are Late Talkers  

ERIC Educational Resources Information Center

Toddlers who are "late talkers" demonstrate reduced expressive vocabulary in the absence of physical, social, cognitive, or sensory impairment; they are usually identified at age 2, when they produce fewer than 50 words and do not combine words (Rescorla, 1989). This study analyzed spontaneous language samples of 10 late talking toddlers and 11…

MacRoy-Higgins, Michelle; Kaufman, Ilana

2012-01-01

28

Patterns Of Development in Late Talkers: Preschool Years  

Microsoft Academic Search

A group of children was identified as “late talkers” (LT) on the basis of small expressive vocabulary size at 20–34 months of age and matched to a group of normally speaking age-mates. The subjects were followed yearly throughout the preschool period in order to track growth in language and related skills. Results showed that although significant improvement in speech and

Rhea Paul

1993-01-01

29

Better-ear glimpsing efficiency with symmetrically-placed interfering talkers.  

PubMed

In listening tasks where a target speech signal is spatially separated from a masking voice, listeners can often gain a substantial advantage in performance by attending to the ear with the better signal-to-noise ratio (SNR). However, this better-ear strategy becomes much more complicated when a target talker located in front of the listener is masked by interfering talkers positioned at symmetric locations to the left and right of the target. When this happens, there are no long-term SNR advantages at either ear and the only binaural SNR advantages available are the result of complicated better-ear glimpses that vary as a function of frequency and rapidly switch back and forth between the two ears according to the natural fluctuations in the relative levels of the two masking voices. In this study, a signal processing technique was used to take the better-ear glimpses that would ordinarily be randomly distributed across the two ears in a binaural speech signal and move them all into the same ear. This resulted in a monaural signal that contained all the information available to an ideal listener using an optimal binaural glimpsing strategy. Speech intelligibility was measured with these optimized monaural stimuli and compared to performance with unprocessed binaural speech stimuli. Performance was similar in these two conditions, suggesting that listeners with normal hearing are able to efficiently extract information from better-ear glimpses that fluctuate rapidly across frequency and across the two ears. PMID:23039448

Brungart, Douglas S; Iyer, Nandini

2012-10-01

30

Developmental and gender-related trends of intra-talker variability in consonant production.  

PubMed

This study investigates the effect of age and gender on the internal structure, cross-category distance, and discriminability of phonemic categories for two contrasts varying in fricative place of articulation (/s/-/?/) and stop voicing (/b/-/p/) in word-initial tokens spoken by adults and normally developing children aged 9-14?yr. Vast between- and within-talker variability was observed with 16% of speakers exhibiting some degree of overlap between phonemic categories-a possible contribution to the range of talker intelligibility found in the literature. Females of all ages produced farther and thus more discriminable categories than males, although gender-marking for fricative between-category distance did not emerge until approximately 11?yr of age. Children produced farther yet also much more dispersed categories than adults with increasing discriminability with age, such that by age 13, children's categories were no less discriminable than those of adults. However, children's ages did not predict category distance or dispersion, indicating that convergence on adult-like category structure must occur later in adolescence. PMID:24180788

Romeo, Rachel; Hazan, Valerie; Pettinato, Michèle

2013-11-01

31

Real-Time Auditory and Visual Talker Tracking Through Integrating EM Algorithm and Particle Filter  

Microsoft Academic Search

This paper presents techniques that enable a talker tracking for effective human-robot interaction. We propose new way of\\u000a integrating an EM algorithm and a particle filter to select an appropriate path for tracking the talker. It can easily adapt\\u000a to new kinds of information for tracking the talker with our system. This is because our system estimates the position of

Hyun-don Kim; Kazunori Komatani; Tetsuya Ogata; Hiroshi G. Okuno

2007-01-01

32

Effect of spectral normalization on different talker speech recognition by cochlear implant users  

PubMed Central

In cochlear implants (CIs), different talkers often produce different levels of speech understanding because of the spectrally distorted speech patterns provided by the implant device. A spectral normalization approach was used to transform the spectral characteristics of one talker to those of another talker. In Experiment 1, speech recognition with two talkers was measured in CI users, with and without spectral normalization. Results showed that the spectral normalization algorithm had small but significant effect on performance. In Experiment 2, the effects of spectral normalization were measured in CI users and normal-hearing (NH) subjects; a pitch-stretching technique was used to simulate six talkers with different fundamental frequencies and vocal tract configurations. NH baseline performance was nearly perfect with these pitch-shift transformations. For CI subjects, while there was considerable intersubject variability in performance with the different pitch-shift transformations, spectral normalization significantly improved the intelligibility of these simulated talkers. The results from Experiments 1 and 2 demonstrate that spectral normalization toward more-intelligible talkers significantly improved CI users’ speech understanding with less-intelligible talkers. The results suggest that spectral normalization using optimal reference patterns for individual CI patients may compensate for some of the acoustic variability across talkers.

Liu, Chuping; Galvin, John; Fu, Qian-Jie; Narayanan, Shrikanth S.

2008-01-01

33

Talker discrimination in preschool children with and without specific language impairment.  

PubMed

Variability inherently present between multiple talkers can prove beneficial in the context of learning. However, the performance during learning paradigms by children with specific language impairment (SLI) remains below typically developing peers, even when multiple talkers are used. Preschool children with typically developing language (n = 17) and SLI (n = 17) participated in a talker discrimination task. Five different pairings of talkers (same male, different males, same female, different females, male + female) were used to present 50 spoken words. Children with SLI were significantly poorer in discriminating same and different male speakers compared to their typical peers. The present findings demonstrate that preschool children with SLI can experience difficulty distinguishing between talkers. Poor sensitivity to variation in talkers may contribute to poor learning in SLI for contexts where multiple talker input should benefit the learner. Learning outcomes: The reader will recognize that the presence of multiple talkers (voices) can assist or detract from performance on cognitive tasks. Children with specific language impairment are less proficient than their peers in distinguishing the same from different talkers. PMID:23885767

Dailey, Natalie S; Plante, Elena; Vance, Rebecca

2013-01-01

34

Target identification using relative level in multi-talker listening.  

PubMed

Previous studies have suggested that listeners can identify words spoken by a target talker amidst competing talkers if they are distinguished by their spatial location or vocal characteristics. This "direct" identification of individual words is distinct from an "indirect" identification based on an association with other words (call-signs) that uniquely label the target. The present study assessed listeners' ability to use differences in presentation level between a target and overlapping maskers to identify target words. A new sentence was spoken every 800?ms by an unpredictable talker from an unpredictable location. Listeners reported color and number words in a target sentence distinguished by a unique call-sign. When masker levels were fixed, target words could be identified directly based on their relative level. Speech-reception thresholds (SRTs) were low (-12.9 dB) and were raised by 5 dB when direct identification was disrupted by randomizing masker levels. Thus, direct identification is possible using relative level. The underlying psychometric functions were monotonic even when relative level was a reliable cue. In a further experiment, indirect identification was prevented by removing the unique call-sign cue. SRTs did not change provided that other cues were available to identify target words directly. Thus, direct identification is possible without indirect identification. PMID:23654395

Kitterick, Pádraig T; Clarke, Emmet; O'Shea, Charlotte; Seymour, Josephine; Summerfield, A Quentin

2013-05-01

35

Superhuman multi-talker speech recognition: the IBM 2006 speech separation challenge system  

Microsoft Academic Search

We describe a system for model based speech separation which achieves super-human recognition performance when two talkers speak at similar levels. The system can separate the speech of two speakers from a single channel recording with remarkable results. It incorporates a novel method for performing two-talker speaker identification and gain estimation. We extend the method of model based high resolution

Trausti T. Kristjansson; John R. Hershey; Peder A. Olsen; Steven J. Rennie; Ramesh A. Gopinath

2006-01-01

36

Assertive and Responsive Conversational Skills of Italian-Speaking Late Talkers  

ERIC Educational Resources Information Center

Background: Previous research on the pragmatic abilities of late talkers at 24 months of age indicates that they have difficulties initiating conversational interactions, but possess intact responsiveness skills. This study uses a parent-administered questionnaire for evaluating the conversational skills of late talkers and suggesting pragmatic…

Bonifacio, Serena; Girolametto, Luigi; Bulligan, Manuela; Callegari, Monica; Vignola, Sandra; Zocconi, Elisabetta

2007-01-01

37

Talker Differences in Clear and Conversational Speech: Vowel Intelligibility for Older Adults with Hearing Loss  

ERIC Educational Resources Information Center

Purpose: To establish the range of talker variability for vowel intelligibility in clear versus conversational speech for older adults with hearing loss and to determine whether talkers who produced a clear speech benefit for young listeners with normal hearing also did so for older adults with hearing loss. Method: Clear and conversational vowels…

Ferguson, Sarah Hargus

2012-01-01

38

Influence of Phonotactic Probability/Neighbourhood Density on Lexical Learning in Late Talkers  

ERIC Educational Resources Information Center

Background: Toddlers who are late talkers demonstrate delays in phonological and lexical skills. However, the influence of phonological factors on lexical acquisition in toddlers who are late talkers has not been examined directly. Aims: To examine the influence of phonotactic probability/neighbourhood density on word learning in toddlers who were…

MacRoy-Higgins, Michelle; Schwartz, Richard G.; Shafer, Valerie L.; Marton, Klara

2013-01-01

39

Heeding the Voice of Experience: The Role of Talker Variation in Lexical Access  

ERIC Educational Resources Information Center

Two experiments used the head-mounted eye-tracking methodology to examine the time course of lexical activation in the face of a non-phonemic cue, talker variation. We found that lexical competition was attenuated by consistent talker differences between words that would otherwise be lexical competitors. In Experiment 1, some English cohort…

Creel, Sarah C.; Aslin, Richard N.; Tanenhaus, Michael K.

2008-01-01

40

Acoustic-phonetic correlates of talker intelligibility for adults and children  

NASA Astrophysics Data System (ADS)

This study investigated acoustic-phonetic correlates of intelligibility for adult and child talkers, and whether the relative intelligibility of different talkers was dependent on listener characteristics. In experiment 1, word intelligibility was measured for 45 talkers (18 women, 15 men, 6 boys, 6 girls) from a homogeneous accent group. The material consisted of 124 words familiar to 7-year-olds that adequately covered all frequent consonant confusions; stimuli were presented to 135 adult and child listeners in low-level background noise. Seven-to-eight-year-old listeners made significantly more errors than 12-year-olds or adults, but the relative intelligibility of individual talkers was highly consistent across groups. In experiment 2, listener ratings on a number of voice dimensions were obtained for the adults talkers identified in experiment 1 as having the highest and lowest intelligibility. Intelligibility was significantly correlated with subjective dimensions reflecting articulation, voice dynamics, and general quality. Finally, in experiment 3, measures of fundamental frequency, long-term average spectrum, word duration, consonant-vowel intensity ratio, and vowel space size were obtained for all talkers. Overall, word intelligibility was significantly correlated with the total energy in the 1- to 3-kHz region and word duration; these measures predicted 61% of the variability in intelligibility. The fact that the relative intelligibility of individual talkers was remarkably consistent across listener age groups suggests that the acoustic-phonetic characteristics of a talker's utterance are the primary factor in determining talker intelligibility. Although some acoustic-phonetic correlates of intelligibility were identified, variability in the profiles of the ``best'' talkers suggests that high intelligibility can be achieved through a combination of different acoustic-phonetic characteristics. .

Hazan, Valerie; Markham, Duncan

2004-11-01

41

Hemispheric differences in specificity effects in talker identification.  

PubMed

In the visual domain, Marsolek and colleagues (1999, 2008) have found support for two dissociable and parallel neural subsystems underlying object and shape recognition: an abstract-category subsystem that operates more effectively in the left cerebral hemisphere (LH), and a specific-exemplar subsystem that operates more effectively in the right cerebral hemisphere (RH). Evidence of this asymmetry has been observed in priming specificity for linguistic (words, pseudoword forms) and nonlinguistic (objects) stimuli. In the auditory domain, the authors previously found hemispheric asymmetries in priming effects for linguistic (spoken words) and nonlinguistic (environmental sounds) stimuli. In the present study, the same asymmetrical pattern was observed in talker identification by means of two long-term repetition-priming experiments. Both experiments consisted of a familiarization phase and a final talker identification test phase, using sentences as stimuli. The results showed that specificity effects (an advantage for same-sentence priming, relative to different-sentence priming) emerged when the target stimuli were presented to the left ear (RH), but not when the target stimuli were presented to the right ear (LH). Taken together, this consistent asymmetrical pattern of data from both domains-visual and auditory-may be indicative of a more general property of the human perceptual processing system. Theoretical implications are discussed. PMID:21097868

González, Julio; Cervera-Crespo, Teresa; McLennan, Conor T

2010-11-01

42

Phoneme contrasts with two, same-talker speakers  

NASA Astrophysics Data System (ADS)

People often have difficulty hearing speech in the presence of concurrent conversations. This well-known cocktail-party effect can be parsed into energetic and informational masking effects. The purpose of this study was to measure and model the effects of energetic and informational masking that occur when two words, spoken by the same talker are heard at the same time. The word identification test used in the experiments was the Modified Rhyme Test (MRT). The MRT was used as both the stimulus and the masker, which afforded a multitude of consonant contrasts. The phrases were presented monaurally at 75 dB SPL over Sennheiser HD-520 headphones to four normal hearing listeners. The independent variables included 30 pairs of MRT word lists spoken by three male and three female talkers. The dependent variable was the percent correct identifications of the two consonants. Listeners performed at 94% correct for the first word choice and 72% correct for the second word choice. The distribution of errors was analyzed by place of articulation, manner of articulation, and speech-to-speech-ratio of the phoneme pairs and compared to articulation index predictions for speech intelligibility.

Ericson, Mark; Mishler, Pamela

2003-04-01

43

Influence of phonotactic probability/neighbourhood density on lexical learning in late talkers  

PubMed Central

Background Toddlers who are late talkers demonstrate delays in phonological and lexical skills. However, the influence of phonological factors on lexical acquisition in toddlers who are late talkers has not been examined directly. Aims To examine the influence of phonotactic probability/neighbourhood density on word learning in toddlers who were late talkers using comprehension, production and word recognition tasks. Methods & Procedures Two-year-olds who were late talkers (n = 12) and typically developing toddlers (n = 12) were exposed to 12 novel pseudo-words for unfamiliar objects in ten training sessions. Pseudo-words contained high or low phonotactic probability English sound sequences. The toddlers’ comprehension, speech production and detection of mispronunciation of the newly learned words were examined using a preferential looking paradigm. Outcomes & Results Late talkers showed poorer performance than toddlers with typical language development in all three tasks: comprehension, production and detection of mispronunciations. The toddlers with typical language development showed better speech production and more sensitivity to mispronunciations for high than low phonotactic probability/neighbourhood density sequences. Phonotactic probability/neighbourhood density did not influence the late talkers’ speech production or sensitivity to mispronunciations; they performed similarly for pseudo-words with high and low phonotactic probability/neighbourhood density sound sequences. Conclusions & Implications The results indicate that some late talkers do not recognize statistical properties of their language, which may contribute to their slower lexical learning.

MacRoy-Higgins, Michelle; Schwartz, Richard G.; Shafer, Valerie L.; Marton, Klara

2013-01-01

44

Children's identification of consonants in a speech-shaped noise or a two-talker masker  

PubMed Central

Purpose This study evaluated child-adult differences for consonant identification in a noise or a two-talker masker. Error patterns were compared across age and masker type to test the hypothesis that errors with the noise masker reflect limitations in the peripheral encoding of speech, whereas errors with the two-talker masker reflect target-masker confusions within the central auditory system. Method A repeated-measures design compared the performance of children (5–13 years) and adults in continuous speech-shaped noise or a two-talker masker. Consonants were identified from a closed set of 12 using a picture-pointing response. Results In speech-shaped noise, children under 10 years of age performed more poorly than adults, but performance was adult-like for 11- to 13-year-olds. In the two-talker masker significant child-adult differences were observed in even the oldest group of children. Systematic clusters of consonant errors were observed for children in the noise masker and for adults in both maskers, but not for children in the two-talker masker. Conclusions These results suggest a more prolonged time course of development for consonant identification in a two-talker than in a noise masker. Differences in error patterns between the maskers support the hypothesis that errors with the two-talker masker reflect failures of sound segregation.

Leibold, Lori J.; Buss, Emily

2014-01-01

45

Subjective evaluation of auralizations created from multi-channel anechoic recordings of a talker in motion  

NASA Astrophysics Data System (ADS)

A high degree of speech intelligibility is very important in educational environments. When designing such spaces, like classrooms, auralizations can be used to subjectively assess the degree of speech intelligibility and clarity. Auralizations are most commonly made by convolving the impulse response (IR) of an omni-directional source with a single channel anechoic speech recording. This paper explores the idea of using multi-channel recordings to create the auralizations, using a female talker in motion. An omni-directional source is split into quadrants and the IR is calculated for each section. These IR's are convolved with the appropriate channel of the anechoic recording and then the four auralizations are mixed to create one final auralization. The auralizations were made using four-channel anechoic recordings of a person walking on a platform while talking. Subjective tests were conducted to determine the ease with which subjects could identify the direction of the movement of the source in rooms with varying amounts of absorption. This method can be used to create more realistic classroom auralizations, as teachers typically move around the room as they teach. [Work supported by the National Science Foundation.

Vigeant, Michelle C.; Wang, Lily M.

2005-04-01

46

Quantifying the intelligibility of speech in noise for non-native talkers  

NASA Astrophysics Data System (ADS)

The intelligibility of speech pronounced by non-native talkers is generally lower than speech pronounced by native talkers, especially under adverse conditions, such as high levels of background noise. The effect of foreign accent on speech intelligibility was investigated quantitatively through a series of experiments involving voices of 15 talkers, differing in language background, age of second-language (L2) acquisition and experience with the target language (Dutch). Overall speech intelligibility of L2 talkers in noise is predicted with a reasonable accuracy from accent ratings by native listeners, as well as from the self-ratings for proficiency of L2 talkers. For non-native speech, unlike native speech, the intelligibility of short messages (sentences) cannot be fully predicted by phoneme-based intelligibility tests. Although incorrect recognition of specific phonemes certainly occurs as a result of foreign accent, the effect of reduced phoneme recognition on the intelligibility of sentences may range from severe to virtually absent, depending on (for instance) the speech-to-noise ratio. Objective acoustic-phonetic analyses of accented speech were also carried out, but satisfactory overall predictions of speech intelligibility could not be obtained with relatively simple acoustic-phonetic measures.

van Wijngaarden, Sander J.; Steeneken, Herman J. M.; Houtgast, Tammo

2002-12-01

47

Tailoring Auditory Training to Patient Needs with Single and Multiple Talkers: Transfer-Appropriate Gains on a Four-Choice Discrimination Test  

PubMed Central

OBJECTIVE Our long-term objective is to develop an auditory training program that will enhance speech recognition in those situations where patients most want improvement. As a first step, the current investigation trained participants using either a single talker or multiple talkers to determine if auditory training leads to transfer-appropriate gains. DESIGN The experiment implemented a 2 × 2 × 2 mixed design, with training condition as a between-participants variable and testing interval and test version as repeated-measures variables. Participants completed a computerized six-week auditory training program wherein they heard either the speech of a single talker or the speech of six talkers. Training gains were assessed with single-talker and multi-talker versions of the Four-Choice Discrimination Test. Participants in both groups were tested on both versions. STUDY SAMPLE Sixty-nine adult hearing-aid users were randomly assigned to either single-talker or multi-talker auditory training. RESULTS Both groups showed significant gains on both test versions. Participants who trained with multiple talkers showed greater improvement on the multi-talker version whereas participants who trained with a single talker showed greater improvement on the single-talker version. CONCLUSION Transfer-appropriate gains occurred following auditory training, suggesting that auditory training can be designed to target specific patient needs.

Barcroft, Joe; Sommers, Mitchell S.; Tye-Murray, Nancy; Mauze, Elizabeth; Schroy, Catherine; Spehar, Brent

2012-01-01

48

Perceptual-Gestural (Mis)Mapping in Serial Short-Term Memory: The Impact of Talker Variability  

ERIC Educational Resources Information Center

The mechanisms underlying the poorer serial recall of talker-variable lists (e.g., alternating female-male voices) as compared with single-voice lists were examined. We tested the novel hypothesis that this "talker variability effect" arises from the tendency for perceptual organization to partition the list into streams based on voice such that…

Hughes, Robert W.; Marsh, John E.; Jones, Dylan M.

2009-01-01

49

Children's Identification of Consonants in a Speech-Shaped Noise or a Two-Talker Masker  

ERIC Educational Resources Information Center

Purpose: To evaluate child-adult differences for consonant identification in a noise or a 2-talker masker. Error patterns were compared across age and masker type to test the hypothesis that errors with the noise masker reflect limitations in the peripheral encoding of speech, whereas errors with the 2-talker masker reflect target-masker…

Leibold, Lori J.; Buss, Emily

2013-01-01

50

Differential Neural Contributions to Native- and Foreign-Language Talker Identification  

ERIC Educational Resources Information Center

Humans are remarkably adept at identifying individuals by the sound of their voice, a behavior supported by the nervous system's ability to integrate information from voice and speech perception. Talker-identification abilities are significantly impaired when listeners are unfamiliar with the language being spoken. Recent behavioral studies…

Perrachione, Tyler K.; Pierrehumbert, Janet B.; Wong, Patrick C. M.

2009-01-01

51

Differential neural contributions to native- and foreign-language talker identification.  

PubMed

Humans are remarkably adept at identifying individuals by the sound of their voice, a behavior supported by the nervous system's ability to integrate information from voice and speech perception. Talker-identification abilities are significantly impaired when listeners are unfamiliar with the language being spoken. Recent behavioral studies describing the language-familiarity effect implicate functionally integrated neural systems for speech and voice perception, yet specific neuroscientific evidence demonstrating the basis for such integration has not yet been shown. Listeners in the present study learned to identify voices speaking a familiar (native) or unfamiliar (foreign) language. The talker-identification performance of neural circuitry in each cerebral hemisphere was assessed using dichotic listening. To determine the relative contribution of circuitry in each hemisphere to ecological (binaural) talker identification abilities, we compared the predictive capacity of dichotic performance on binaural performance across languages. Listeners' right-ear (left hemisphere) performance was a better predictor of binaural accuracy in their native language than a foreign one. This enhanced role of the classically language-dominant left hemisphere in listeners' native language demonstrates functionally integrated neural systems for speech and voice perception during talker identification. PMID:19968445

Perrachione, Tyler K; Pierrehumbert, Janet B; Wong, Patrick C M

2009-12-01

52

The Development of Language-Specific and Language-Independent Talker Processing  

ERIC Educational Resources Information Center

Purpose: In this study, the authors aimed to investigate how differences in language ability relate to differences in processing talker information in the native language and an unfamiliar language by comparing performance for different ages and for groups with impaired language. Method: Three groups of native English listeners with typical…

Levi, Susannah V.; Schwartz, Richard G.

2013-01-01

53

Talker-specific learning in amnesia: Insight into mechanisms of adaptive speech perception.  

PubMed

A hallmark of human speech perception is the ability to comprehend speech quickly and effortlessly despite enormous variability across talkers. However, current theories of speech perception do not make specific claims about the memory mechanisms involved in this process. To examine whether declarative memory is necessary for talker-specific learning, we tested the ability of amnesic patients with severe declarative memory deficits to learn and distinguish the accents of two unfamiliar talkers by monitoring their eye-gaze as they followed spoken instructions. Analyses of the time-course of eye fixations showed that amnesic patients rapidly learned to distinguish these accents and tailored perceptual processes to the voice of each talker. These results demonstrate that declarative memory is not necessary for this ability and points to the involvement of non-declarative memory mechanisms. These results are consistent with findings that other social and accommodative behaviors are preserved in amnesia and contribute to our understanding of the interactions of multiple memory systems in the use and understanding of spoken language. PMID:24657480

Trude, Alison M; Duff, Melissa C; Brown-Schmidt, Sarah

2014-05-01

54

The Effect of Talker and Intonation Variability on Speech Perception in Noise in Children with Dyslexia  

ERIC Educational Resources Information Center

Purpose: In this study, the authors aimed to determine whether children with dyslexia (hereafter referred to as "DYS children") are more affected than children with average reading ability (hereafter referred to as "AR children") by talker and intonation variability when perceiving speech in noise. Method: Thirty-four DYS and 25 AR children were…

Hazan, Valerie; Messaoud-Galusi, Souhila; Rosen, Stuart

2013-01-01

55

Effects of Talker Sex and Voice Style of Verbal Cockpit Warnings on Performance  

Microsoft Academic Search

Objective: The effects of talker sex and voice style of verbal cockpit warnings on performance were investigated to help make warning messages distinct from speech on the flight deck. Background: Auditory warnings are used in aircraft to alert the crew to hazards and their associated levels of danger. Failing to comply with a warning has led to aviation incidents and

G. Robert Arrabito

2009-01-01

56

Strategies adopted by talkers faced with fluctuating and competing-speech maskers.  

PubMed

Studying how interlocutors exchange information efficiently during conversations in less-than-ideal acoustic conditions promises to both further the understanding of links between perception and production and inform the design of human-computer dialogue systems. The current study explored how interlocutors' speech changes in the presence of fluctuating noise. Pairs of talkers were recorded while solving puzzles cooperatively in quiet and with modulated-noise or competing speech maskers whose silent intervals were manipulated to produce either temporally sparse or dense maskers. Talkers responded to masked conditions by both increasing the amount of speech produced and locally changing their speech activity patterns, resulting in a net reduction in the proportion of speech in temporal overlap with the maskers, with larger relative reductions for sparse maskers. An analysis of talker activity in the vicinity of masker onset and offset events showed a significant reduction in onsets following masker onsets, and a similar increase in onsets following masker offsets. These findings demonstrate that talkers are sensitive to masking noise and respond to its fluctuations by adopting a "wait-and-talk" strategy. PMID:24116425

Aubanel, Vincent; Cooke, Martin

2013-10-01

57

Comparison of bimodal and bilateral cochlear implant users on speech recognition with competing talker, music perception, affective prosody discrimination and talker identification  

PubMed Central

Objectives Despite excellent performance in speech recognition in quiet, most cochlear implant users have great difficulty with speech recognition in noise, music perception, identifying tone of voice, and discriminating different talkers. This may be partly due to the pitch coding in cochlear implant speech processing. Most current speech processing strategies use only the envelope information; the temporal fine structure is discarded. One way to improve electric pitch perception is to utilize residual acoustic hearing via a hearing aid on the non-implanted ear (bimodal hearing). This study aimed to test the hypothesis that bimodal users would perform better than bilateral cochlear implant users on tasks requiring good pitch perception. Design Four pitch-related tasks were used: Hearing in Noise Test (HINT) sentences spoken by a male talker with a competing female, male, or child talker. Montreal Battery of Evaluation of Amusia. This is a music test with six subtests examining pitch, rhythm and timing perception, and musical memory. Aprosodia Battery. This has five subtests evaluating aspects of affective prosody and recognition of sarcasm. Talker identification using vowels spoken by ten different talkers (three male, three female, two boys, and two girls). Bilateral cochlear implant users were chosen as the comparison group. Thirteen bimodal and thirteen bilateral adult cochlear implant users were recruited; all had good speech perception in quiet. Results There were no significant differences between the mean scores of the bimodal and bilateral groups on any of the tests, although the bimodal group did perform better than the bilateral group on almost all tests. Performance on the different pitch-related tasks was not correlated, meaning that if a subject performed one task well they would not necessarily perform well on another. The correlation between the bimodal users' hearing threshold levels in the aided ear and their performance on these tasks was weak. Conclusions Although the bimodal cochlear implant group performed better than the bilateral group on most parts of the four pitch-related tests, the differences were not statistically significant. The lack of correlation between test results shows that the tasks used are not simply providing a measure of pitch ability. Even if the bimodal users have better pitch perception, the real-world tasks used are reflecting more diverse skills than pitch. This research adds to the existing speech perception, language, and localization studies that show no significant difference between bimodal and bilateral cochlear implant users.

Cullington, Helen E; Zeng, Fan-Gang

2010-01-01

58

Differential Neural Contributions to Native and Foreign-Language Talker Identification  

Microsoft Academic Search

Humans are remarkably adept at identifying individuals by the sound of their voice, a behavior supported by the nervous system’s ability to integrate information from voice and speech perception. Talker-identification abilities are significantly impaired when listeners are unfamiliar with the language being spoken. Recent behavioral studies describing the language-familiarity effect implicate functionally integrated neural systems for speech and voice perception,

Tyler K. Perrachione; Janet B. Pierrehumbert; Patrick C. M. Wong

2009-01-01

59

Listener detection of talker stress in low-rate coded speech  

Microsoft Academic Search

We describe an experiment where listeners were asked to detect two specific forms of stress in talkers' recorded voices heard via six different simulated communication systems. Both task-induced stress and dramatized urgency were used. Communication systems included low-rate digital speech coding combined with bit errors, packet loss, and packet loss concealment. Twenty-four listeners participated in a total of 11,520 detection

Stephen Voran

2008-01-01

60

Aided speech-identification performance in single-talker competition by older adults with impaired hearing.  

PubMed

This study examined the effects of increased processing load on the closed-set speech-identification performance of young and older adults in a one-talker background. Since the older adults had impaired hearing, speech-identification performance was measured for spectrally shaped stimuli comparable to those experienced when wearing well-fit hearing aids. There were three groups of listeners: (1) 19 older adults with high-frequency sensorineural hearing loss; (2) 10 young adults with normal hearing who were assessed with the same spectrally shaped stimuli as the older adults; (3) 9 young adults with normal hearing who were assessed without spectral shaping and at a poorer target-to-competition ratio in an effort to equate overall performance to that of the older adults. In addition to this group factor, there were three within-participant repeated-measures independent variables designed to increase the demands on processing for the target and competing speech stimuli. These were: (1) competition meaningfulness (played in forward or reverse direction); (2) gender match between target and competing talkers (same or different gender); and (3) talker uncertainty (either the same target/competition talker pair or one of many such pairs on each trial). These three repeated-measures independent variables were examined in a 2 x 2 x 2 factorial design. They showed roughly independent and additive effects on speech-identification such that combinations of these variables decreased performance cumulatively. Older adults performed worse than young adults across the board, but also showed diminished relative improvement as the processing load was decreased. Individual differences in performance among the older adults were also examined. PMID:19778396

Humes, Larry E; Coughlin, Maureen

2009-10-01

61

An Experimental Evaluation of an Audio Tape Learning Program for Shipboard Damage Control Central Sound Powered Telephone Talker Procedures. Final Report.  

ERIC Educational Resources Information Center

In the event of an emergency aboard a vessel, the sound powered telephone talkers have the responsibility of receiving damage reports from various portions of the ship, logging them, and passing them on to a Damage Control Assistant (DCA) who then can direct the damage control procedures. The talker must not only be thoroughly familiar with sound…

Brock, John F.; McCutcheon, Richard E., Jr.

62

Navajo Code Talker Joe Morris, Sr. shared insights from his time as a secret World War Two messenger  

NASA Technical Reports Server (NTRS)

Navajo Code Talker Joe Morris, Sr. shared insights from his time as a secret World War Two messenger with his audience at NASA's Dryden Flight Research Center on Nov. 26, 2002. NASA Dryden is located on Edwards Air Force Base in California's Mojave Desert.

2002-01-01

63

Lexical Training through Modeling and Elicitation Procedures with Late Talkers Who Have Specific Language Impairment and Developmental Delays  

ERIC Educational Resources Information Center

Late talkers with specific language impairment and developmental delay make up a large portion of our early childhood caseloads; therefore, an understanding of best clinical practices for these populations is essential. Early lexical learning was examined in 2 interactive treatment approaches with 29 late-talking preschoolers with language and…

Kouri, Theresa A.

2005-01-01

64

Recognition of spoken words by native and non-native listeners: Talker-, listener-, and item-related factors  

PubMed Central

In order to gain insight into the interplay between the talker-, listener-, and item-related factors that influence speech perception, a large multi-talker database of digitally recorded spoken words was developed, and was then submitted to intelligibility tests with multiple listeners. Ten talkers produced two lists of words at three speaking rates. One list contained lexically “easy” words (words with few phonetically similar sounding “neighbors” with which they could be confused), and the other list contained lexically “hard” (wordswords with many phonetically similar sounding “neighbors”). An analysis of the intelligibility data obtained with native speakers of English (experiment 1) showed a strong effect of lexical similarity. Easy words had higher intelligibility scores than hard words. A strong effect of speaking rate was also found whereby slow and medium rate words had higher intelligibility scores than fast rate words. Finally, a relationship was also observed between the various stimulus factors whereby the perceptual difficulties imposed by one factor, such as a hard word spoken at a fast rate, could be overcome by the advantage gained through the listener's experience and familiarity with the speech of a particular talker. In experiment 2, the investigation was extended to another listener population, namely, non-native listeners. Results showed that the ability to take advantage of surface phonetic information, such as a consistent talker across items, is a perceptual skill that transfers easily from first to second language perception. However, non-native listeners had particular difficulty with lexically hard words even when familiarity with the items was controlled, suggesting that non-native word recognition may be compromised when fine phonetic discrimination at the segmental level is required. Taken together, the results of this study provide insight into the signal-dependent and signal-independent factors that influence spoken language processing in native and non-native listeners.

Bradlow, Ann R.; Pisoni, David B.

2012-01-01

65

Dimensional feature weighting utilizing multiple kernel learning for single-channel talker location discrimination using the acoustic transfer function.  

PubMed

This paper presents a method for discriminating the location of the sound source (talker) using only a single microphone. In a previous work, the single-channel approach for discriminating the location of the sound source was discussed, where the acoustic transfer function from a user's position is estimated by using a hidden Markov model of clean speech in the cepstral domain. In this paper, each cepstral dimension of the acoustic transfer function is newly weighted, in order to obtain the cepstral dimensions having information that is useful for classifying the user's position. Then, this paper proposes a feature-weighting method for the cepstral parameter using multiple kernel learning, defining the base kernels for each cepstral dimension of the acoustic transfer function. The user's position is trained and classified by support vector machine. The effectiveness of this method has been confirmed by sound source (talker) localization experiments performed in different room environments. PMID:23363107

Takashima, Ryoichi; Takiguchi, Tetsuya; Ariki, Yasuo

2013-02-01

66

Masker location uncertainty reveals evidence for suppression of maskers in two-talker contexts.  

PubMed

In many natural settings, spatial release from masking aids speech intelligibility, especially when there are competing talkers. This paper describes a series of three experiments that investigate the role of prior knowledge of masker location on phoneme identification and spatial release from masking. In contrast to previous work, these experiments use initial stop-consonant identification as a test of target intelligibility to ensure that listeners had little time to switch the focus of spatial attention during the task. The first experiment shows that target phoneme identification was worse when a masker played from an unexpected location (increasing the consonant identification threshold by 2.6 dB) compared to when an energetically very similar and symmetrically located masker came from an expected location. In the second and third experiments, target phoneme identification was worse (increasing target threshold levels by 2.0 and 2.6 dB, respectively) when the target was played unexpectedly on the side from which the masker was expected compared to when the target came from an unexpected, symmetrical location in the hemifield opposite the expected location of the masker. These results support the idea that listeners modulate spatial attention by both focusing resources on the expected target location and withdrawing attentional resources from expected locations of interfering sources. PMID:21973359

Allen, Kachina; Alais, David; Shinn-Cunningham, Barbara; Carlile, Simon

2011-10-01

67

Varying constants.  

PubMed

We review properties of theories for the variation of gravitation and fine structure 'constants'. We highlight some general features of the cosmological models that exist in these theories with reference to recent quasar data that are consistent with time variation in the fine structure constant since a redshift of 3.5. The behaviour of a simple class of varying-alpha cosmologies is outlined in the light of all the observational constraints. PMID:16147502

Barrow, John D

2005-09-15

68

Adoptive Identity  

Microsoft Academic Search

\\u000a Adoptive identity addresses these questions: “Who am I as an adopted person?” and “What does being adopted mean to me, and\\u000a how does this fit into my understanding of my self, relationships, family, and culture?” The process of identity construction\\u000a is observed in adoptive identity exploration, as adopted persons reflect on the meaning of adoption in their lives, take active

Harold D. Grotevant; Lynn Von Korff

69

Age-related changes to spectral voice characteristics affect judgments of prosodic, segmental, and talker attributes for child and adult speech  

PubMed Central

Purpose As children mature, changes in voice spectral characteristics covary with changes in speech, language, and behavior. Spectral characteristics were manipulated to alter the perceived ages of talkers’ voices while leaving critical acoustic-prosodic correlates intact, to determine whether perceived age differences were associated with differences in judgments of prosodic, segmental, and talker attributes. Method Speech was modified by lowering formants and fundamental frequency, for 5-year-old children’s utterances, or raising them, for adult caregivers’ utterances. Next, participants differing in awareness of the manipulation (Exp. 1a) or amount of speech-language training (Exp. 1b) made judgments of prosodic, segmental, and talker attributes. Exp. 2 investigated the effects of spectral modification on intelligibility. Finally, in Exp. 3 trained analysts used formal prosody coding to assess prosodic characteristics of spectrally-modified and unmodified speech. Results Differences in perceived age were associated with differences in ratings of speech rate, fluency, intelligibility, likeability, anxiety, cognitive impairment, and speech-language disorder/delay; effects of training and awareness of the manipulation on ratings were limited. There were no significant effects of the manipulation on intelligibility or formally coded prosody judgments. Conclusions Age-related voice characteristics can greatly affect judgments of speech and talker characteristics, raising cautionary notes for developmental research and clinical work.

Dilley, Laura C.; Wieland, Elizabeth A.; Gamache, Jessica L.; McAuley, J. Devin; Redford, Melissa A.

2013-01-01

70

Is the Good-Imitator-Poor-Talker Profile Syndrome-Specific in Down Syndrome?: Evidence from Standardised Imitation and Language Measures  

ERIC Educational Resources Information Center

The emergence of the Down syndrome (DS) behavioural phenotype during early development may be of great importance for early intervention. The main goal of this study was to investigate the good-imitator-poor-talker developmental profile in DS at preschool age. Twenty children with Down syndrome (DS; mean nonverbal mental age NMA 1 y10 m) and 15…

Vanvuchelen, M.; Feys, H.; De Weerdt, W.

2011-01-01

71

Exploring Early Years Educators' Ownership of Language and Communication Knowledge and Skills: A Review of Key Policy and Initial Reflections on "Every Child a Talker" and Its Implementation  

ERIC Educational Resources Information Center

This article examines four significant policy documents that have informed the Department for Children School and Families (DCSF)' s "Every Child a Talker" (ECaT). The analysis focuses on where the ownership of knowledge in relation to communication and language lies as part of policy implementation and training processes. The article then…

McLeod, Naomi

2011-01-01

72

Bridging Identities through Identity Change  

ERIC Educational Resources Information Center

As indicated by Deaux and Burke (this volume), sociology and psychology have shared a tradition of discourse allowing social psychologists to build upon each other's ideas. A conversation between social identity theory and identity theory was initiated fifteen years ago and addressed the similarities and differences between these theories. This…

Cantwell, Allison M.; Martiny, Sarah E.

2010-01-01

73

Identity management  

NASA Astrophysics Data System (ADS)

This paper introduces identity management concepts and discusses various issues associated with their implementation. It will try to highlight technical, legal, and social aspects that must been foreseen when defining the numerous processes that an identity management infrastructure must support. Grid interoperability as well as cross platform interoperability is addressed on the technical aspect, followed by a short discussion on social consequences on user's privacy when completed traceability is enforced. The paper will finally give some examples on how identity management has been implemented at CERN.

Pace, A.

2008-07-01

74

Gender Identity  

MedlinePLUS

... who you have a crush on". What does "transgender" mean? Transgender people are people whose gender identity (feeling about ... are a female trapped in a boy's body. Transgender people feel strongly that their mind is right, ...

75

English vowel identification in long-term speech-shaped noise and multi-talker babble for English and Chinese listeners.  

PubMed

The identification of 12 English vowels was measured in quiet and in long-term speech-shaped noise (LTSSN) and multi-talker babble for English-native (EN) listeners and Chinese-native listeners in the U.S. (CNU) and China (CNC). The signal-to-noise ratio was manipulated from -15 to 0 dB. As expected, EN listeners performed significantly better in quiet and noisy conditions than CNU and CNC listeners. Vowel identification in LTSSN was similar between CNU and CNC listeners; however, performance in babble was significantly better for CNU listeners than for CNC listeners, indicating that exposing non-native listeners to native English may reduce informational masking of multi-talker babble. PMID:23656099

Mi, Lin; Tao, Sha; Wang, Wenjing; Dong, Qi; Jin, Su-Hyun; Liu, Chang

2013-05-01

76

Exploring Identity  

ERIC Educational Resources Information Center

A generation of change in Higher Education (HE) has seen a progressive shift to utilitarian values and the consequent questioning of the nature, purposes and roles of the university. This in turn leads to the question: what does it mean to be a university academic today? This suite of poems entitled 'Exploring Identity' arose in response to these…

Chowaniec, Janina

2005-01-01

77

Identity versus Peace: Identity Wins  

ERIC Educational Resources Information Center

In this essay, Zvi Bekerman reveals the complicated and dynamic negotiation of individual and group identities for communities engaged in peace and reconciliation education. By looking closely at the experiences of students, teachers, and parents at one integrated bilingual Arabic-Hebrew school in Israel, Bekerman finds that while children are…

Bekerman, Zvi

2009-01-01

78

Bidirectional clear speech perception benefit for native and high-proficiency non-native talkers and listeners: Intelligibility and accentednessa  

PubMed Central

This study investigated how native language background interacts with speaking style adaptations in determining levels of speech intelligibility. The aim was to explore whether native and high proficiency non-native listeners benefit similarly from native and non-native clear speech adjustments. The sentence-in-noise perception results revealed that fluent non-native listeners gained a large clear speech benefit from native clear speech modifications. Furthermore, proficient non-native talkers in this study implemented conversational-to-clear speaking style modifications in their second language (L2) that resulted in significant intelligibility gain for both native and non-native listeners. The results of the accentedness ratings obtained for native and non-native conversational and clear speech sentences showed that while intelligibility was improved, the presence of foreign accent remained constant in both speaking styles. This suggests that objective intelligibility and subjective accentedness are two independent dimensions of non-native speech. Overall, these results provide strong evidence that greater experience in L2 processing leads to improved intelligibility in both production and perception domains. These results also demonstrated that speaking style adaptations along with less signal distortion can contribute significantly towards successful native and non-native interactions.

Smiljanic, Rajka; Bradlow, Ann R.

2011-01-01

79

Predicting the effect of hearing loss and audibility on amplified speech reception in a multi-talker listening scenario.  

PubMed

Auditive and cognitive influences on speech perception in a complex situation were investigated in listeners with normal hearing (NH) and hearing loss (HL). The speech corpus used was the Nonsense-Syllable Response Measure [NSRM; Woods and Kalluri, (2010). International Hearing Aid Research Conference, pp. 40-41], a 12-talker corpus which combines 154 nonsense syllables with 8 different carrier phrases. Listeners heard NSRM sentences in quiet, background noise, and in background noise plus other "jammer" NSRM sentences. All stimuli were linearly amplified. A "proficiency" value, determined from the results in quiet and the quiet-condition speech intelligibility index (SII), was used with the SII in predicting results in the other conditions. Results for nine of ten NH subjects were well-predicted (within the limits of binomial variability) in the noise condition, as were eight of these subjects in the noise-plus-jammers condition. All 16 HL results were well-predicted in the noise condition, as were 9 of the HL in the noise-plus-jammers condition. Hierarchical regression partialling out the effects of age found proficiency in noise-plus-jammers significantly correlated with results of "trail-making" tests, thought to index processing speed and attention-deployment ability, and proficiency in quiet and noise was found significantly correlated with results from a backward digit-span memory test. PMID:23742377

Woods, William S; Kalluri, Sridhar; Pentony, Shareka; Nooraei, Nazanin

2013-06-01

80

The effects of room acoustics and multiple talkers on speech intelligibility with normal hearing and hearing impaired individuals  

NASA Astrophysics Data System (ADS)

Many studies have shown the effect of hearing loss and spatial separation on multi-talker word identification ability in free-field listening conditions. However, little is known about the combination of room reflections and hearing impairment on understanding speech. The purpose of this study was to determine if the effect of room reflections on speech intelligibility was equal among normal hearing and hearing impaired listeners. Two acoustic generation techniques were employed to create the free-field and semi-reverberant listening conditions. Free-field listening conditions were created using virtual acoustic technology. Room reflections were added to the speech samples using dummy-head recordings in a semi-reverberant room. The word identification test used in the experiments was the Modified Rhyme Test (MRT), which afforded a multitude of phonemic pairs when phrases were played simultaneously. Thirty-three listeners in each group participated in each test condition. The hearing impaired listeners were below 60 years of age and exhibited a high frequency, cochlear hearing loss. The normal hearing listeners were age matched with the hearing impaired group. A difference in the type of phonemic identifications between the two techniques and the two groups were found. These phonemic contrasts between will be discussed individually.

Mishler, Pamela; Ericson, Mark; Cowell, Shawn

2002-05-01

81

Spatial release from masking as a function of the spectral overlap of competing talkers.  

PubMed

This study tested the hypothesis that the reduced spatial release from speech-on-speech masking typically observed in listeners with sensorineural hearing loss results from increased energetic masking. Target sentences were presented simultaneously with a speech masker, and the spectral overlap between the pair (and hence the energetic masking) was systematically varied. The results are consistent with increased energetic masking in listeners with hearing loss that limits performance when listening in speech mixtures. However, listeners with hearing loss did not exhibit reduced spatial release from masking when stimuli were filtered into narrow bands. PMID:23742322

Best, Virginia; Thompson, Eric R; Mason, Christine R; Kidd, Gerald

2013-06-01

82

Musical America: United yet Varied Identities for Classroom Use  

ERIC Educational Resources Information Center

More than ever, today's America is diverse beyond anyone's wildest dreams, and the music that resonates in families and neighborhoods, on concert stages, in schools, dance halls, and clubs, and through the media is as wide a variety as exists anywhere in the world. America's music is decidedly difficult to pin down as a single and united style, as…

Campbell, Patricia Shehan; Lum, Chee-Hoo

2008-01-01

83

Lexical training through modeling and elicitation procedures with late talkers who have specific language impairment and developmental delays.  

PubMed

Late talkers with specific language impairment and developmental delay make up a large portion of our early childhood caseloads; therefore, an understanding of best clinical practices for these populations is essential. Early lexical learning was examined in 2 interactive treatment approaches with 29 late-talking preschoolers with language and developmental disabilities. Children were randomly assigned to either a mand-elicited imitation (MEI) condition in which elicitations and imitative prompts were used or to a modeling with auditory bombardment (Mod-AB) condition in which auditory bombardment and play modeling were incorporated with no response demands on participants. Lexical production of target vocabulary words already comprehended was measured during a 10-session training period and then during two 50-min play interactions with a parent/caretaker in the home after treatment was completed. Results indicated that the MEI procedure was relatively more effective in facilitating frequency and rate of target word learning in the treatment setting, but no significant differences were found between conditions in the number or percentage of target words generalized to the home setting. Mod-AB children produced more target words that were limited to the home setting than did MEI children, whose productivity was more balanced across settings. Treatment by aptitude regression analyses indicated that none of the preintervention language, cognitive, or total development aptitude scores were predictive of child performance in 1 treatment condition or the other, although Battelle Developmental Inventory communication scores and sizes of preintervention lexicons were predictive of child performance across conditions. Empirical and clinical issues pertaining to the efficacy of modeling- and elicitation-based procedures for late-talking preschoolers are discussed. PMID:15934450

Kouri, Theresa A

2005-02-01

84

National Identity Learning Module  

NSDL National Science Digital Library

This learning module provides conceptual framework on the topic of national identity as well as three case studies on the topics of: icons of identity, landscapes of national identity, and contested public space.

M.keane

85

Talkin' Musical Identities Blues  

ERIC Educational Resources Information Center

After reading the book "Musical Identities" (Raymond MacDonald, David Hargreaves, Dorothy Miell, eds.; Oxford and New York: Oxford University Press, 2002), this author states she finds it difficult to separate "identities in music" from "music in identities." In fact, she cannot conceive of music apart from identity. It is Lamb's view that the…

Lamb, Roberta

2004-01-01

86

Avoiding Medical Identity Theft  

MedlinePLUS

Tips for Preventing and Detecting Medical Identity Theft Tips for Preventing and Detecting Medical Identity Theft Monitor your health records closely and address any errors quickly Share personal and health ...

87

Family Processes and Identity  

Microsoft Academic Search

\\u000a Family is a unique relationship context that influences the contents and processes of identity. The identity of individuals\\u000a emerges, at least in part, from being members of a family. Moreover, the family context influences not only the development\\u000a of one’s personal identity as a family member but also other aspects of personal identity. Family is not a neutral environment\\u000a for

Eugenia Scabini; Claudia Manzi

88

Identity security awareness.  

PubMed

Identity theft is an increasing concern when organizations, businesses, and even childbirth educators ask for a client's Social Security number for identification purposes. In this column, the author suggests ways to protect one's identity and, more importantly, decrease the opportunities for identity theft. PMID:17273374

Philipsen, Nayna C

2004-01-01

89

USMC Identity Operations Strategy.  

National Technical Information Service (NTIS)

USMC Identity Operations (IdOps) strategy provides a structure to integrate traditional and emerging DoD identity operations enablers. The strategy drives identity dominance planning and guides resourcing to train and equip Marines to employ IdOps across ...

F. Sanchez

2011-01-01

90

The Gay Identity Questionnaire  

Microsoft Academic Search

This article describes the development of the Gay Identity Questionnaire (GIQ) which was derived from tenets of the Homosexual Identity Formation (HIF) model proposed by Cass in 1979. The GIQ is a brief measure that may be used by clinicians and researchers for identifying gay males in the various stages of homosexual identity formation. The test construction procedures included the

Stephen Brady; Wilma J. Busse

1994-01-01

91

Identity Theft Literature Review.  

National Technical Information Service (NTIS)

This review draws on available scientific studies and a variety of other sources to assess what we know about identity theft and what might be done to further the research base of identity theft. Until the federal Identity Theft and Assumption Deterrence ...

G. R. Newman M. M. McNally

2005-01-01

92

Conversations: Identity Matters.  

ERIC Educational Resources Information Center

Presents a "conversation" between the authors that discusses various theories of identity, the relationship between identity and literacy, and how identities and literacies are constructed and practiced within relationships of race, gender, class, and space. Addresses findings of recent studies and the authors' thoughts about what these findings…

McCarthey, Sarah J.; Moje, Elizabeth Birr

2002-01-01

93

Social Identity and Preferences*  

PubMed Central

Social identities prescribe behaviors for people. We identify the marginal behavioral effect of these norms on discount rates and risk aversion by measuring how laboratory subjects’ choices change when an aspect of social identity is made salient. When we make ethnic identity salient to Asian-American subjects, they make more patient choices. When we make racial identity salient to black subjects, non-immigrant blacks (but not immigrant blacks) make more patient choices. Making gender identity salient has no effect on intertemporal or risk choices.

Benjamin, Daniel J.; Choi, James J.; Strickland, A. Joshua

2009-01-01

94

Perceived consequences of hypothetical identity-inconsistent sexual experiences: effects of perceiver's sex and sexual identity.  

PubMed

Most people organize their sexual orientation under a single sexual identity label. However, people may have sexual experiences that are inconsistent with their categorical sexual identity label. A man might identify as heterosexual but still experience some attraction to men; a woman might identify as lesbian yet enter into a romantic relationship with a man. Identity-inconsistent experiences are likely to have consequences. In the present study, we examined lay perceptions of the consequences of identity-inconsistent sexual experiences for self-perceived sexuality and for social relationships among a sexually diverse sample (N = 283). We found that the perceived consequences of identity-inconsistent experiences for self-perception, for social stigmatization, and for social relationships varied as a function of participant sex, participant sexual identity (heterosexual, gay, lesbian), and experience type (fantasy, attraction, behavior, love). We conclude that not all identity-inconsistent sexual experiences are perceived as equally consequential and that the perceived consequences of such experiences vary predictably as a function of perceiver sex and sexual identity. We discuss the role lay perceptions of the consequences of identity-inconsistent sexual experiences may play in guiding attitudes and behavior. PMID:23733152

Preciado, Mariana A; Johnson, Kerri L

2014-04-01

95

Exploring medical identity theft.  

PubMed

The crime of medical identity theft is a growing concern in healthcare institutions. A mixed-method study design including a two-stage electronic survey, telephone survey follow-up, and on-site observations was used to evaluate current practices in admitting and registration departments to reduce the occurrence of medical identity theft. Survey participants were chief compliance officers in acute healthcare organizations and members of the Health Care Compliance Association. Study results indicate variance in whether or how patient identity is confirmed in healthcare settings. The findings of this study suggest that information systems need to be designed for more efficient identity management. Admitting and registration staff must be trained, and compliance with medical identity theft policies and procedures must be monitored. Finally, biometric identity management solutions should be considered for stronger patient identification verification. PMID:20169017

Mancilla, Desla; Moczygemba, Jackie

2009-01-01

96

Exploring Medical Identity Theft  

PubMed Central

The crime of medical identity theft is a growing concern in healthcare institutions. A mixed-method study design including a two-stage electronic survey, telephone survey follow-up, and on-site observations was used to evaluate current practices in admitting and registration departments to reduce the occurrence of medical identity theft. Survey participants were chief compliance officers in acute healthcare organizations and members of the Health Care Compliance Association. Study results indicate variance in whether or how patient identity is confirmed in healthcare settings. The findings of this study suggest that information systems need to be designed for more efficient identity management. Admitting and registration staff must be trained, and compliance with medical identity theft policies and procedures must be monitored. Finally, biometric identity management solutions should be considered for stronger patient identification verification.

Mancilla, Desla; Moczygemba, Jackie

2009-01-01

97

Identity Management Architecture  

Microsoft Academic Search

\\u000a Identity management plays a crucial role in many application contexts, including e-government, e-commerce, business intelligence,\\u000a investigation, and homeland security. The variety of approaches to and techniques for identity management, while addressing\\u000a some of the challenges, has introduced new problems especially concerning interoperability and privacy. As such, any attempt\\u000a to consolidate such diverse views and approaches to identity management in a

Uwe Glässer; Mona Vajihollahi

98

Cognitive Maturation and the Use of Pitch and Rate Information in Making Similarity Judgments of a Single Talker  

ERIC Educational Resources Information Center

Purpose: This study examined age-related differences in speaker similarity judgments, in which acoustic cues known to be important in speaker and speech recognition and identification were varied. Method: Four groups of listeners of 5- to 6-, 8- to 9-, 10- to 11-, and 25- to 30-year-olds were asked to judge the similarity between an original…

Petrini, Karin; Tagliapietra, Sara

2008-01-01

99

Varying-{alpha} monopoles  

SciTech Connect

We study static magnetic monopoles in the context of varying-{alpha} theories and show that there is a group of models for which the 't Hooft-Polyakov solution is still valid. Nevertheless, in general static magnetic monopole solutions in varying-{alpha} theories depart from the classical 't Hooft-Polyakov solution with the electromagnetic energy concentrated inside the core seeding spatial variations of the fine-structure constant. We show that Equivalence Principle constraints impose tight limits on the allowed variations of {alpha} induced by magnetic monopoles which confirms the difficulty to generate significant spatial variation of the fine-structure constant found in previous works. This is true even in the most favorable case where magnetic monopoles are the source for these variations.

Menezes, J.; Avelino, P.P.; Santos, C. [Centro de Fisica do Porto e Departamento de Fisica da Faculdade de Ciencias da Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto (Portugal)

2005-11-15

100

Literacy and Cultural Identity.  

ERIC Educational Resources Information Center

Analyzes the relationship between literacy and cultural identity in a multicultural society and argues that cultures differ in what they view as literate behavior, influencing how individuals acquire and engage in literacy. Asserts that the type and content of literacy education received influences cultural identity. (Author/SK)

Ferdman, Bernardo M.

1990-01-01

101

Variants of cepstrum based speaker identity verification  

Microsoft Academic Search

Analysis parameters and various distance measures are investigated for a template matching scheme for speaker identity verification (SIV). Two parameters are systematically varied-the length of the signal analysis window, and the order of the linear predictive coding\\/-cepstrum analysis. Computational costs associated with the choice of parameters are also considered. The distance measures tested are the Euclidean, inverse variance weighting, differential

George Velius

1988-01-01

102

The Master Ward Identity  

NASA Astrophysics Data System (ADS)

In the framework of perturbative quantum field theory (QFT) we propose a new, universal (re)normalization condition (called `master Ward identity') which expresses the symmetries of the underlying classical theory. It implies for example the field equations, energy-momentum, charge- and ghost-number conservation, renormalized equal-time commutation relations and BRST-symmetry. It seems that the master Ward identity can nearly always be satisfied, the only exceptions we know are the usual anomalies. We prove the compatibility of the master Ward identity with the other (re)normalization conditions of causal perturbation theory, and for pure massive theories we show that the `central solution' of Epstein and Glaser fulfills the master Ward identity, if the UV-scaling behavior of its individual terms is not relatively lowered. Application of the master Ward identity to the BRST-current of non-Abelian gauge theories generates an identity (called `master BRST-identity') which contains the information which is needed for a local construction of the algebra of observables, i.e. the elimination of the unphysical fields and the construction of physical states in the presence of an adiabatically switched off interaction.

Dütsch, M.; Boas, F.-M.

103

Effect of fundamental-frequency and sentence-onset differences on speech-identification performance of young and older adults in a competing-talker backgrounda  

PubMed Central

This study investigated the benefits of differences between sentences in fundamental frequency (F0) and temporal onset for sentence pairs among listener groups differing in age and hearing sensitivity. Two experiments were completed with the primary difference between experiments being the way in which the stimuli were presented. Experiment 1 used blocked stimulus presentation, which ultimately provided redundant acoustic cues to mark the target sentence in each pair, whereas Experiment 2 sampled a slightly more restricted stimulus space, but in a completely randomized presentation order. For both experiments, listeners were required to detect a cue word (“Baron”) for the target sentence in each pair and to then identify the target words (color, number) that appeared later in the target sentence. Results of Experiment 1 showed that F0 or onset separation cues were beneficial to both cue-word detection and color-number identification performance. There were no significant differences across groups in the ability to detect the cue word, but groups differed in their ability to identify the correct color-number words. Elderly adults with impaired hearing had the greatest difficulty with the identification task despite the application of spectral shaping to restore the audibility of the speech stimuli. For the most part, the primary results of Experiment 1 were replicated in Experiment 2, although, in the latter experiment, all older adults, whether they had normal or impaired hearing, performed worse than young adults with normal hearing. From Experiment 2, the benefits received for a difference in F0 between talkers of 6 semitones were equivalent to those received for an onset asynchrony of 300?ms between sentences and, for such conditions, the combination of both sound-segregation cues resulted in an additive benefit.

Hee Lee, Jae; Humes, Larry E.

2012-01-01

104

Effect of fundamental-frequency and sentence-onset differences on speech-identification performance of young and older adults in a competing-talker background.  

PubMed

This study investigated the benefits of differences between sentences in fundamental frequency (F0) and temporal onset for sentence pairs among listener groups differing in age and hearing sensitivity. Two experiments were completed with the primary difference between experiments being the way in which the stimuli were presented. Experiment 1 used blocked stimulus presentation, which ultimately provided redundant acoustic cues to mark the target sentence in each pair, whereas Experiment 2 sampled a slightly more restricted stimulus space, but in a completely randomized presentation order. For both experiments, listeners were required to detect a cue word ("Baron") for the target sentence in each pair and to then identify the target words (color, number) that appeared later in the target sentence. Results of Experiment 1 showed that F0 or onset separation cues were beneficial to both cue-word detection and color-number identification performance. There were no significant differences across groups in the ability to detect the cue word, but groups differed in their ability to identify the correct color-number words. Elderly adults with impaired hearing had the greatest difficulty with the identification task despite the application of spectral shaping to restore the audibility of the speech stimuli. For the most part, the primary results of Experiment 1 were replicated in Experiment 2, although, in the latter experiment, all older adults, whether they had normal or impaired hearing, performed worse than young adults with normal hearing. From Experiment 2, the benefits received for a difference in F0 between talkers of 6 semitones were equivalent to those received for an onset asynchrony of 300 ms between sentences and, for such conditions, the combination of both sound-segregation cues resulted in an additive benefit. PMID:22978898

Lee, Jae Hee; Humes, Larry E

2012-09-01

105

Time Varying Feature Data  

NASA Astrophysics Data System (ADS)

The infrastructure to gather, store and access information about our environment is improving and growing rapidly. The increasing amount of information allows us to get a better understanding of the current state of our environment, historical processes and to simulate and predict the future state of the environment. Finer grained spatial and temporal data and more reliable communications make it easier to model dynamic states and ephemeral features. The exchange of information within and across geospatial domains is facilitated through the use of harmonized information models. The Observations & Measurements (O&M) developed through OGC and standardised by ISO is an example of such a cross-domain information model. It is used in many domains, including meteorology, hydrology as well as the emergency management. O&M enables harmonized representation of common metadata that belong to the act of determining the state of a feature property, whether by sensors, simulations or humans. In addition to the resulting feature property value, information such as the result quality but especially the time that the result applies to the feature property can be represented. Temporal metadata is critical to modelling past and future states of a feature. The features, and the semantics of each property, are defined in domain specific Application Schema using the General Feature Model (GFM) from ISO 19109 and usually encoded following ISO 19136. However, at the moment these standards provide only limited support for the representation and handling of time varying feature data. Features like rivers, wildfires or gas plumes have a defined state - for example geographic extent - at any given point in time. To keep track of changes, a more complex model for example using time-series coverages is required. Furthermore, the representation and management of feature property value changes via the service interfaces defined by OGC and ISO - namely: WFS and WCS - would be rather complex. Keeping track of feature property value corrections or even feature (state change) cancellations for auditing purposes is also not easy to achieve. The aviation domain has strong requirements to represent and manage the state of aeronautical features through time. Being able to efficiently encode and manage feature state changes, keeping track of all changes for auditing purposes and being able to determine the future state of an aeronautical feature as currently known to the system are vital for aeronautical applications. In order to support these requirements, the Aeronautical Information Exchange Model (AIXM) which has been developed by the aviation domain is based on the so called AIXM Temporality Model (AIXM-TM). The AIXM-TM defines various rules for modeling, representing and handling the state of aeronautical features through time. This is a promising approach that can be incorporated into the GFM so that ultimately the modeling and management of time varying feature data is supported in an interoperable and harmonized way in all geospatial domains. This presentation gives an introduction to the main concepts of the AIXM-TM. It also shows how the GFM can be extended to support time varying feature data. Finally, the relationship of O&M and time varying features is discussed.

Echterhoff, J.; Simonis, I.; Atkinson, R.

2012-04-01

106

Who stole my identity?  

PubMed

What you personally and as a manager should know about identity theft, its ramifications, and how to help your institution prevent potential thieves from stealing confidential information. PMID:12629794

Ferrara, Raymond C

2003-01-01

107

Story telling: crafting identities  

PubMed Central

Career guidance clients are seeking to craft new identities that better position them in their careers. The focus of the present article is on narrative career counselling's potential contribution in providing a meaningful and useful experience for career guidance clients. To illustrate the potential of narrative career counselling, the story telling approach is offered as an example to illustrate how identity can be crafted in contextually and culturally sensitive ways.

McMahon, Mary; Watson, Mark

2013-01-01

108

Identity and Illness  

Microsoft Academic Search

\\u000a Over the last several decades, sociological interest in and research on the relationship between illness and identity has\\u000a flourished. Unlike disease, which refers primarily to physical pathology, illness generally refers to lived experience (Kleinman\\u000a et al. 1978). The foci of this research have been two-fold: an examination of the public self (an individual’s identity as\\u000a perceived by others) and the

Kathryn J. Lively; Carrie L. Smith

109

Blade pitch varying mechanism  

SciTech Connect

A gas turbine engine is described comprising: (a) a stationary member; (b) first and second rotating structures coaxially disposed about the stationary member; (c) an annular gas flowpath coaxial with the first and second rotating structures; (d) first and second rotor blades attached to the first and second rotating structures; (e) forward and aft rows of variable pitch propulsor blades coupled to and disposed radially outwardly of the first and second rotating structures respectively; (f) a first gear coaxially coupled to one of the propulsor blades whereby angular displacement of the first gear about a radius of the rotating structure varies the pitch of the propulsor blade with respect to the rotating structure; (g) a second gear rotatably coupled to the first gear; (h) a third gear rigidly coupled to the second gear; (i) a fourth gear rigidly coupled to the rotating structure and rotatably coupled to the thrid gear, (j) means for eccentrically revolving the second gear and the third gear with respect to the first gear and the fourth gear, respectively, whereby the first gear is angularly displaced with respect to the fourth gear.

Butler, L.

1988-04-19

110

X-Men Evolution: Mutational Identity and Shifting Subjectivities  

Microsoft Academic Search

Discourses of identity, as articulated through media culture, are contested and unstable sites of struggle. Individuals are hailed by multiple subject positions with varying degrees of recognition, misrecognition, rejection, and\\/or identification. From this process, identity continually (re)emerges as individuals accept, reject, and negotiate a variety of subjectivities. To enact a critical intervention adept at tracing these shifting discourses the author

Jason Zingsheim

2011-01-01

111

Identity Theft Resource Center  

NSDL National Science Digital Library

These days, persons who find themselves the victim of an identity theft have a number of resources they can draw on to deal with their predicament. In 1997, things were quite different, and at that time Linda Foley found herself victimized by this crime. Several years later, Linda founded the Identity Theft Resource Center, and since then the Center has been commended for its work by the Department of Justice and Senator Dianne Feinstein. From the Center’s homepage, visitors can access victim information guides, learn about recent (and some “classic”) consumer scams. A great deal of this information is tailored specifically for different audiences, such as law enforcement and children. One area that may be particularly helpful is the “In the Workplace” section. Here, visitors can learn how to avoid identity theft in the workplace, and also browse through a list of prevention tips.

112

Social Identity in Adolescence.  

ERIC Educational Resources Information Center

Social identity theory (SIT) was used to investigate effects of social categorization on adolescents' intergroup behaviour. Participants displayed consistent ingroup-favouring behaviour in their ratings: the ingroup was associated to a greater extent than the outgroup with positively valued dimensions, and to a lesser extent with negatively valued…

Tarrant, Mark; North, Adrian C.; Edridge, Mark D.; Kirk, Laura E.; Smith, Elizabeth A.; Turner, Roisin E.

2001-01-01

113

The Visual Identity Project  

ERIC Educational Resources Information Center

Identity is the focus of the middle-school visual arts program at Cambridge Friends School (CFS) in Cambridge, Massachusetts. Sixth graders enter the middle school and design a personal logo as their first major project in the art studio. The logo becomes a way for students to introduce themselves to their teachers and to represent who they are…

Tennant-Gadd, Laurie; Sansone, Kristina Lamour

2008-01-01

114

Body Integrity Identity Disorder  

Microsoft Academic Search

IntroductionBody Integrity Identity Disorder (BIID) is a rare, infrequently studied and highly secretive condition in which there is a mismatch between the mental body image and the physical body. Subjects suffering from BIID have an intense desire to amputate a major limb or severe the spinal cord in order to become paralyzed. Aim of the study is to broaden the

Rianne M. Blom; Raoul C. Hennekam; Damiaan Denys

2012-01-01

115

The Music Identity Project  

ERIC Educational Resources Information Center

This article addresses the intrapersonal aims of music education with specific emphasis on musical identity. For the author, the question "Who am I?" is ingrained, shaped, and experienced by the contexts, relationships, and activities in which people are most deeply invested. Thus, he believes that music education should have mechanisms…

Talbot, Brent C.

2013-01-01

116

Story Telling: Crafting Identities  

ERIC Educational Resources Information Center

Career guidance clients are seeking to craft new identities that better position them in their careers. The focus of the present article is on narrative career counselling's potential contribution in providing a meaningful and useful experience for career guidance clients. To illustrate the potential of narrative career counselling, the story…

McMahon, Mary; Watson, Mark

2013-01-01

117

Literacy, Identity, Imagination, Flight.  

ERIC Educational Resources Information Center

Examines issues of literacy and identity relative to the development of a critical pedagogy and a critical democracy. Argues that the best strategies to foster a critical and astute citizenry that would pursue a radical, transcultural democracy, involve maximizing various epistemologies, searching for transcultural understandings, and opening up…

Gilyard, Keith

2000-01-01

118

Human Identication Using Gait  

Microsoft Academic Search

Gait refers to the style of walking of an individual. This paper presents a view-invariant approach for human identication at a distance, using gait recognition. Recognition of a person from their gait is a biometric of increasing interest. Based on principal component analysis (PCA), this paper describes a simple, but ecient approach to gait recognition. Binarized silhouettes of a motion

Murat EK

119

Gendered Avatar Identity  

ERIC Educational Resources Information Center

Gendered appearance in "World of Warcraft" is of particular interest because it seems to infiltrate interactions between individuals without serving a functional purpose within the game itself. It provides an opportunity to look at avatar choice in environments that have a primary purpose aside from existing as an arena for creating identity, and…

Woolums, Viola

2011-01-01

120

Identities in Flux  

ERIC Educational Resources Information Center

Because people's vision of themselves and others is always changing, students wondered how pictures might show the effect of time and history on identity. They wondered how they might show two self-portraits in the same picture. This article describes a lesson on reconstructive self-portrait using a contrapuntal format. (Contains 5 resources and 3…

Wagner, Tom

2007-01-01

121

Identities for generalized hypergeometric coefficients  

SciTech Connect

Generalizations of hypergeometric functions to arbitrarily many symmetric variables are discussed, along with their associated hypergeometric coefficients, and the setting within which these generalizations arose. Identities generalizing the Euler identity for {sub 2}F{sub 1}, the Saalschuetz identity, and two generalizations of the {sub 4}F{sub 3} Bailey identity, among others, are given. 16 refs.

Biedenharn, L.C.; Louck, J.D.

1991-01-01

122

Language and Identity in Kazakhstan  

Microsoft Academic Search

In the twentieth century the identity of Kazakhstan and the Kazakh people has been closely intertwined with the identity of Russia and the Russian people. Since Kazakhstan began to move toward sovereignty in the late 1980s, official republic documents relevant to language have reflected attempts to redefine republic and ethnic identity. This study traces the evolution of images of identity

William Fierman

1998-01-01

123

Constructing nurses' professional identity through social identity theory.  

PubMed

The profession of nursing continues to struggle with defining and clarifying its professional identity. The definitive recognition of nursing as a profession was the moving of training from the hospital apprentice model to the tertiary sector. However, this is only part of the story of professional identity in nursing. Once training finishes and enculturation into the workplace commences, professional identity becomes a complicated social activity. This paper proposes social identity theory as a valuable research framework to assist with clarifying and describing the professional identity of nurses. The paper outlines the key elements of a profession and then goes on to describe the main concepts of social identity theory. Lastly, a connection is made between the usefulness of using social identity theory in researching professional identity in nursing, recognizing the contextual nature of the social activity of the profession within its workplace environment. PMID:24713013

Willetts, Georgina; Clarke, David

2014-04-01

124

Influence of National Sport Team Identity on National Identity  

Microsoft Academic Search

The purpose of the research was to elaborate on the relationship between sport national team identity and national identity. The relationship has been documented anecdotally and in other areas of study, most notably in sport sociology (Bairner, 2001). There has been no research in sport management, however, addressing how national sport team identity may influence or contribute to the formation

Dusko Bogdanov

2011-01-01

125

Identity Form Matters: White Racial Identity and Attitudes Toward Diversity  

Microsoft Academic Search

Previous research has drawn mixed conclusions regarding the relationship between White racial identity and attitudes toward diversity. We propose that identity form may help to disambiguate this relationship. In the present study, White participants wrote brief essays and were grouped based on their exhibition of one of three White identity forms: power-cognizant, prideful, or weakly identified. These groups were then

Matt J. Goren; Victoria C. Plaut

2012-01-01

126

Identity form matters: White racial identity and attitudes toward diversity  

Microsoft Academic Search

Previous research has drawn mixed conclusions regarding the relationship between White racial identity and attitudes toward diversity. We propose that identity form may help to disambiguate this relationship. In the present study, White participants wrote brief essays and were grouped based on their exhibition of one of three White identity forms: power-cognizant, prideful, or weakly identified. These groups were then

Matt J. Goren; Victoria C. Plaut

2011-01-01

127

Identity and intimacy during adolescence: connections among identity styles, romantic attachment and identity commitment.  

PubMed

Integration of adult attachment and psychosocial development theories suggests that adolescence is a time when capacities for romantic intimacy and identity formation are co-evolving. The current study addressed direct, indirect and moderated associations among identity and romantic attachment constructs with a diverse sample of 2178 middle adolescents. Identity styles were found to have unique and direct associations with identity commitment. Attachment anxiety showed only indirect associations and attachment avoidance had both direct and indirect associations with identity commitment. Tests of moderation revealed that gender, race and relationship status had no influence on the direct associations of identity styles or romantic attachment with identity commitment. Few differences in association strength among identity styles and romantic attachment emerged for gender or race. However, the differences found for relationship status suggested that relationship experiences adolescents bring to their exploration of identity and intimacy matter for how these two areas of development articulate. PMID:22503899

Kerpelman, Jennifer L; Pittman, Joe F; Saint-Eloi Cadely, Hans; Tuggle, Felicia J; Harrell-Levy, Marinda K; Adler-Baeder, Francesca M

2012-12-01

128

Medical Identity Theft Environmental Scan.  

National Technical Information Service (NTIS)

The broad purpose of this report is to serve as a baseline of knowledge and understanding for stakeholders regarding medical identity theft. Medical identity theft should be better understood and addressed for several important reasons. First, it can have...

2008-01-01

129

Gender Identity Disorder in Girls  

Microsoft Academic Search

Understanding gender identity disorder first requires an explication of what is meant by gender identity. As a psychological construct, gender identity has been\\u000a conceptualized with respect to both cognitive and affective parameters. At the cognitive level, gender identity has been defined\\u000a as the child's ability to accurately discriminate females from males and then to identify her or his own gender

Kenneth J. Zucker

130

Online Identities and Social Networking  

Microsoft Academic Search

\\u000a Online identities play a critical role in the social web that is taking shape on the Internet. Despite many technical proposals\\u000a for creating and managing online identities, none has received widespread acceptance. Design and implementation of online\\u000a identities that are socially acceptable on the Internet remains an open problem. This chapter discusses the interplay between\\u000a online identities and social networking.

Muthucumaru Maheswaran; Bader Ali; Hatice Ozguven; Julien Lord

2010-01-01

131

Identity and Fear of Success.  

ERIC Educational Resources Information Center

Investigated the relation between ego identity and fear of success using the Rasmussen Ego Identity Scale (EIS), the Marcia interview for identity status, the Cohen People Knowing Questionnaire (PKO) to measure fear of success, and an occupational behavior and attitude questionnaire. EIS and PKO scores correlated significantly with each other and…

Larkin, Linda

1987-01-01

132

RATIONAL FUNCTIONS CERTIFY COMBINATORIAL IDENTITIES  

Microsoft Academic Search

This paper presents a general method for proving and discovering combina- torial identities: to prove an identity one can present a certificate that consists of a pair of functions of two integer variables. To prove the identity, take the two functions that are given, check that condition (1) below is satisfied (a simple mechanical task), and check the equally simple

HERBERT S. WILF; DORON ZEILBERGER

1989-01-01

133

Identity theft and your practice.  

PubMed

Medical identity theft is a growing problem in America. The federal government has passed laws to help "prevent" identity theft. However, several powerful medical associations are fighting the legislation. Americans need to know what is happening with these laws and why these laws are important to protect providers from lawsuits and consumers of healthcare from medical identity theft. PMID:21090197

Asbell, Lisa

2010-01-01

134

Precedent autonomy and personal identity.  

PubMed

Debates on precedent autonomy and some forms of paternalistic interventions, which are related to questions of personal identity, are analyzed. The discussion is based on the distinction between personal identity as persistence and as biographical identity. It first is shown that categorical objections to advance directives and "Ulysses contracts" are based on false assumptions about personal identity that conflate persistence and biographical identity. Therefore, advance directives and "Ulysses contracts" are ethically acceptable tools for prolonging one's autonomy. The notions of personality and biographical identity are used to analyze the ethically relevant features. Thereby, it is shown that these concepts are operative in and useful for thinking in biomedical ethics. The overall conclusion is that categorical arguments against precedent autonomy or "Ulysses contracts" are based on misleading theories of personal identity and that advance directives are an ethically respectable tool for prolonging individuals' autonomy in cases of dementia and mental illness. PMID:11657917

Quante, Michael

1999-12-01

135

A performance evaluation of personnel identity verifiers  

SciTech Connect

Personnel identity verification devices, which are based on the examination and assessment of a body feature or a unique repeatable personal action, are steadily improving. These biometric devices are becoming more practical with respect to accuracy, speed, user compatibility, reliability and cost, but more development is necessary to satisfy the varied and sometimes ill-defined future requirements of the security industry. In an attempt to maintain an awareness of the availability and the capabilities of identity verifiers for the DOE security community, Sandia Laboratories continue to comparatively evaluate the capabilities and improvements of developing devices. An evaluation of several recently available verifiers is discussed in this paper. Operating environments and procedures more typical of physical access control use can reveal performance substantially different from the basic laboratory tests.

Maxwell, R.L.; Wright, L.J.

1987-01-01

136

A performance evaluation of personnel identity verifiers  

SciTech Connect

Personnel identity verification devices, which are based on the examination and assessment of a body feature or a unique repeatable personal action, are steadily improving. These biometric devices are becoming more practical with respect to accuracy, speed, user compatibility, reliability and cost, but more development is necessary to satisfy the varied and sometimes ill-defined future requirements of the security industry. In an attempt to maintain an awareness of the availability and the capabilities of identity verifiers for the DOE security community, Sandia Laboratories continues to comparatively evaluate the capabilities and improvements of developing devices. An evaluation of several recently available verifiers is discussed in this paper. Operating environments and procedures more typical of physical access control use can reveal performance substantially different from the basic laboratory tests.

Maxwell, R.L.; Wright, L.J.

1987-07-01

137

Varying /c and particle horizons  

NASA Astrophysics Data System (ADS)

We explore what restrictions may impose the second law of thermodynamics on varying speed of light theories. We find that the attractor scenario solving the flatness problem is consistent with the generalized second law at late time.

Chimento, L. P.; Jakubi, A. S.; Pavón, D.

2001-05-01

138

Eudaimonic Identity Theory: Identity as Self-Discovery  

Microsoft Academic Search

\\u000a Work on eudaimonistic identity theory began in an effort to answer the question: How is an individual trying to answer identity-related\\u000a questions to know which of the many identity alternatives available is the “better” choice to make? Central to eudaimonistic\\u000a philosophy is the construct of the daimon or “true self,” those potentials of each individual that represent the best that

Alan S. Waterman

139

Time-Varying Contour Topology  

PubMed Central

The contour tree has been used to compute the topology of isosurfaces, generate a minimal seed set for accelerated isosurface extraction, and provide a user interface to segment individual contour components in a scalar field. In this paper, we extend the benefits of the contour tree to time-varying data visualization. We define temporal correspondence of contour components and describe an algorithm to compute the correspondence information in time-dependent contour trees. A graph representing the topology changes of time-varying isosurfaces is constructed in real-time for any selected isovalue using the precomputed correspondence information. Quantitative properties, such as surface area and volume of contour components, are computed and labeled on the graph. This topology change graph helps users to detect significant topological and geometric changes in time-varying isosurfaces. The graph is also used as an interactive user interface to segment, track. and visualize the evolution of any selected contour components over time.

Sohn, Bong-Soo; Bajaj, Chandrajit

2009-01-01

140

Social Identity Change: Shifts in Social Identity during Adolescence  

ERIC Educational Resources Information Center

This study investigated the proposition that adolescence involves significant shifts in social identity as a function of changes in social context and cognitive style. Using an experimental design, we primed either peer or gender identity with a sample of 380 early- (12-13 years), mid- (15-16 years), and late-adolescents (18-20 years) and then…

Tanti, Chris; Stukas, Arthur A.; Halloran, Michael J.; Foddy, Margaret

2011-01-01

141

Play Memories and Place Identity.  

ERIC Educational Resources Information Center

This retrospective study examined play memories from childhood to adulthood of 478 university students between ages 20 and 62 as exhibited in drawings of play memories and questionnaire responses. The study focused on the role of the physical environment and place identity in play memories and individual identity development. Findings showed that…

Sandberg, Anette

2003-01-01

142

Exploring Our Complex Math Identities  

ERIC Educational Resources Information Center

In this article, the authors discuss some of the dispositions that comprise students' (and teachers') relationships with mathematics--what they call a "mathematical identity." They define "mathematical identity" as an individual's "relationship" with mathematics. They present three reflective tasks that can be used with math students at all levels…

Leatham, Keith R.; Hill, Diane S.

2010-01-01

143

Palestinian Children Crafting National Identity  

ERIC Educational Resources Information Center

This study examines the formulation of national identity in Palestinian children by exploring their understanding of its paradoxes. Twelve Palestinian children were interviewed from cities, villages and refugee camps in the West Bank. The children express the multiple dimensions of national identity in terms of "self" and "other"; however these…

Habashi, Janette

2008-01-01

144

The Challenge of Hyphenated Identity  

ERIC Educational Resources Information Center

Hyphenated identity is a term that references the multiple socially bound features that individuals use to think about themselves. This article examines cultural and linguistic considerations in the understanding of hyphenated identity and discusses the merit of the concept for clinical use in speech-language pathology. The sources used consist of…

Cheng, Li-Rong Lilly

2004-01-01

145

Including Identity in Clinical Practices  

ERIC Educational Resources Information Center

This article adds qualitative analyses to established practices in speech-language pathology to demonstrate how clinicians can work with identity. Interview material is used to illustrate established analytical practices. This same material is again analyzed from the perspective of identity using the Functional Individual Systems (FIS) framework,…

Hagstrom, Fran

2004-01-01

146

Nigrescence and Identity: Some Limitations.  

ERIC Educational Resources Information Center

Responds to two opening articles by Parham ("Cycles of Psychological Nigrescence") and Helms ("Considering Some Methodological Issues in Racial Identity Counseling Research"). Argues that Black or African identity is not a developmental reaction to social oppression, but is a core personality trait, essential to healthy self-integration and…

Akbar, Na'im

1989-01-01

147

Teacher Investment in Learner Identity  

ERIC Educational Resources Information Center

From a sociocultural perspective, teacher identity is constructed in relation to others, including other teachers and students. Drawing on positioning theory and the concept of investment, this study analyzed the case of a secondary English teacher who negotiated his teacher identity in relation to English language learners (ELLs). Findings…

Reeves, Jenelle

2009-01-01

148

Guide to the Concept: Identity.  

ERIC Educational Resources Information Center

This draft outline presents and organizes for teachers one of the fundamental concepts in war/peace studies: identity. Identity is viewed as the relationship between a person's self-role and other socio-political roles learned and valued by him in the course of his psychological development. A rationale section points up the relationship of the…

Goldman, Ralph M.

149

Canadian Evacuation and Nisei Identity.  

ERIC Educational Resources Information Center

Japanese Canadians were interviewed to determine the effect of World War II evacuation on their ethnic identity. Older respondents deemphasized issues related to evacuation when discussing their ethnic identity. Younger Japanese Canadians are aware of this "cloud" as part of their ethnic heritage but are unaware of its exact origin. (MK)

Makabe, Tomoko

1980-01-01

150

Identity Options in Russian Textbooks  

ERIC Educational Resources Information Center

This article introduces a new analytical approach to the study of identity options offered in foreign and second language textbooks. This approach, grounded in poststructuralist theory and critical discourse analysis, is applied to 2 popular beginning Russian textbooks. Two sets of identity options are examined in the study: imagined learners…

Shardakova, Marya; Pavlenko, Aneta

2004-01-01

151

Naxi Intellectuals and Ethnic Identity  

ERIC Educational Resources Information Center

This article examines the role of Naxi intellectuals in the ethnic identity resurgence of the Naxi since the 1980s in China. The article illustrates 3 aspects of Naxi intellectuals' approach to the identity construction of the Naxi: researching the Naxi, engaging in cultural activities and exhibitions, and teaching the Naxi culture to the younger…

Haibo, Yu

2009-01-01

152

Coming to an Asexual Identity: Negotiating Identity, Negotiating Desire  

PubMed Central

Sexuality is generally considered an important aspect of self-hood. Therefore, individuals who do not experience sexual attraction, and embrace an asexual identity are in a unique position to inform the social construction of sexuality. This study explores the experiences of asexual individuals utilizing open ended Internet survey data from 102 self-identified asexual people. In this paper I describe several distinct aspects of asexual identities: the meanings of sexual, and therefore, asexual behaviors, essentialist characterizations of asexuality, and lastly, interest in romance as a distinct dimension of sexuality. These findings have implications not only for asexual identities, but also for the connections of asexuality with other marginalized sexualities.

Scherrer, Kristin S.

2010-01-01

153

Ecstasy use among college undergraduates: gender, race and sexual identity  

Microsoft Academic Search

We examined a random sample (N = 3606) of undergraduates at one large midwestern university and explored correlates of ecstasy use and how use varied by gender, race, and sexual identity. Approximately 10% of the sample used ecstasy in their lifetime; 7% had used within the past year and 3% within the past month. Ecstasy was the second most likely

Carol J. Boyd; Sean Esteban McCabe; Hannah d'Arcy

2003-01-01

154

Time varying Hierarchical Archimedean Copulae  

Microsoft Academic Search

There is increasing demand for models of time-varying and non-Gaussian dependencies for mul- tivariate time-series. Available models suffer from the curse of dimensionality or restrictive assumptions on the parameters and the distribution. A promising class of models are the hierarchical Archimedean copulae (HAC) that allow for non-exchangeable and non-Gaussian dependency structures with a small number of parameters. In this paper

Wolfgang Karl Härdle; Ostap Okhrin; Yarema Okhrin

2010-01-01

155

African American Racial Identity across the Lifespan: Identity Status, Identity Content, and Depressive Symptoms  

ERIC Educational Resources Information Center

Cluster analytic methods were used to create 4 theorized ethnic identity statuses (achieved, foreclosed, moratorium, and diffused) among 940 African American adolescents (13-17 years old), college students (18-23 years old), and adults (27-78 years old). Evidence for the existence of 4 identity statuses was found across the 3 age groups. The…

Yip, Tiffany; Seaton, Eleanor K.; Sellers, Robert M.

2006-01-01

156

Identity and Intimacy during Adolescence: Connections among Identity Styles, Romantic Attachment and Identity Commitment  

ERIC Educational Resources Information Center

Integration of adult attachment and psychosocial development theories suggests that adolescence is a time when capacities for romantic intimacy and identity formation are co-evolving. The current study addressed direct, indirect and moderated associations among identity and romantic attachment constructs with a diverse sample of 2178 middle…

Kerpelman, Jennifer L.; Pittman, Joe F.; Cadely, Hans Saint-Eloi; Tuggle, Felicia J.; Harrell-Levy, Marinda K.; Adler-Baeder, Francesca M.

2012-01-01

157

Sexual Identity as a Universal Process  

Microsoft Academic Search

\\u000a This chapter summarizes advances in current theoretical and empirical literature on sexual identity development. It proposes\\u000a a model of sexual identity that offers a more global (i.e., non-sexual identity group specific) perspective in comparison\\u000a to existing sexual identity group-specific sexual identity models. Attention to commonalities in sexual identity development\\u000a across sexual identity subgroups can offer a more global perspective that

Frank R. Dillon; Roger L. Worthington; Bonnie Moradi

158

Extended Identity for Social Networks  

NASA Astrophysics Data System (ADS)

Nowadays we are experiencing the consolidation of social networks (SN). Although there are trends trying to integrate SN platforms. they remain as data silos between each other. Information can't be exchanged between them. In some cases, it would be desirable to connect this scattered information, in order to build a distributed identity. This contribution proposes an architecture for distributed social networking. Based on distributed user-centric identity, our proposal extends it by attaching user information. It also bridges the gap between distributed identity and distributed publishing capabilities.

Tapiador, Antonio; Fumero, Antonio; Salvachúa, Joaquín

159

Identity Verifier Evaluation of Performance.  

National Technical Information Service (NTIS)

Because the development of personnel identity verifiers is active in several areas, it is important that an independent comparative evaluation of such devices be continuously pursued for the security industry to apply such devices. An evaluation of severa...

R. L. Maxwell

1987-01-01

160

Psychotherapists' spiritual, religious, atheist or agnostic identity and their practice of psychotherapy: A grounded theory study  

Microsoft Academic Search

In this present grounded theory study, 16 experienced psychologists, who practiced from varied theoretical orientations and came from diverse religious\\/spiritual\\/nonreligious backgrounds, explored their personal religious\\/spiritual\\/nonreligious identity development journeys, their experiences with clients' religious\\/spiritual content in psychotherapy sessions, and how their identity may have influenced the way they interacted with religious\\/spiritual material during sessions. Results revealed that psychologists' spiritual\\/religious\\/nonreligious identity is

Danielle Magaldi-Dopman; Jennie Park-Taylor; Joseph G. Ponterotto

2011-01-01

161

When Is Identity Congruent with the Self? A Self-Determination Theory Perspective  

Microsoft Academic Search

\\u000a Within the identity literature, self and identity are often used as interchangeable terms. In contrast, in self-determination\\u000a theory (SDT; Ryan & Deci, 2003) both terms have a differentiated meaning and it is maintained that identities may vary in\\u000a the extent to which they are congruent with the basic growth tendencies of the self that are fueled by the basic psychological

Bart Soenens; Maarten Vansteenkiste

162

Lesbian, Gay, and Bisexual Students Coming Out at the Intersection of Spirituality and Sexual Identity  

Microsoft Academic Search

In this study, the researchers examined how lesbian, gay, and bisexual undergraduate students negotiated and defined their spiritual identities during the coming-out process. Although there were varied responses, the findings suggest that students describe spirituality as acceptance, personal relationships with a powerful essence, and connections to nature. When navigating multiple identities, students experienced various levels of intersectionality including irreconciliation, progressive

Shaunna Payne Gold; Dafina Lazarus Stewart

2011-01-01

163

The Concept of gender identity disorder in childhood and adolescence after 39 years  

Microsoft Academic Search

The term “gender role” appeared in print first in 1955. The term “gender identity” was used in a press release, November 21, 1966, to announce the new clinic for transsexuals at The Johns Hopkins Hospital. It was disseminated in the media worldwide, and soon entered the vernacular. The definitions of gender and gender identity vary on a doctrinal basis. In

John Money

1994-01-01

164

Place Identity and Sport Tourism: The Case of the Heritage Classic Ice Hockey Event  

Microsoft Academic Search

Sport is an important factor in the construction of place identity. This is particularly evident in the case of nostalgia based sport events that have been consciously developed in an attempt to influence destination image. It is unclear, however, just how much influence attraction planners have on identity in the face of varying media interpretations. This paper examines the way

Greg Ramshaw; Tom Hinch

2006-01-01

165

Generalized theory of varying alpha  

NASA Astrophysics Data System (ADS)

In this paper, we formulate a generalization of the simple Bekenstein-Sandvik-Barrow-Magueijo theory of varying alpha by allowing the coupling constant ? for the corresponding scalar field ? to depend on ?. We focus on the situation where ? is exponential in ? and find the late-time behaviors that occur in matter-dominated and dark-energy dominated cosmologies. We also consider the situation when the background expansion scale factor of the Universe evolves in proportion to an arbitrary power of the cosmic time. We find the conditions under which the fine-structure “constant” increases with time, as in the Bekenstein-Sandvik-Barrow-Magueijo theory, and establish a cosmic no-hair behavior for accelerating universes. We also find the conditions under which the fine-structure constant can decrease with time and compare the whole family of models with astronomical data from quasar absorption spectra.

Barrow, John D.; Lip, Sean Z. W.

2012-01-01

166

Identity Theft Prevention in CyberCIEGE.  

National Technical Information Service (NTIS)

The increase in online activities which involve people's identification information means that identity theft has become a widespread computer security issue. Identity theft is defined as the misuse of personal information and identity. To address th...

C. A. Ruppar

2005-01-01

167

Identity Theft. Office for Victims of Crime.  

National Technical Information Service (NTIS)

Identity theft has been called the fastest growing consumer crime in America. In 2011, identity theft was the top consumer complaint reported to the Federal Trade Commission (FTC). Fifteen percent of consumers who contacted the FTC complained of identity ...

2013-01-01

168

Interdisciplinary Thinking and Physics Identity  

NSDL National Science Digital Library

One goal of education is to help students become well-rounded citizens who can think broadly across boundaries. In addition, individuals with interdisciplinary thinking skills can be valuable contributors to modern research challenges by understanding and recognizing interdisciplinary connections and working in diverse teams. However, little research exists on the connection between interdisciplinary thinking and physics education. What aspects of physics classroom practices and experiences foster interdisciplinary thinking? What effect does interdisciplinary thinking have on the development of studentsâ physics identities? Using a physics identity theoretical framework with data from a national survey, this study found that self-reported characteristics of interdisciplinary thinking are significantly correlated with higher levels of physics identity development. Also, several factors of the physics classroom environment and pedagogies are significantly related to interdisciplinary thinking.

Scott, Tyler D.; Hazari, Zahra; Potvin, Geoff

2014-01-31

169

Voice identity discrimination in schizophrenia.  

PubMed

Voices provide a wealth of socially-relevant information, including cues to a speaker's identity and emotion. Deficits recognising emotion from voice have been extensively described in schizophrenia, and linked specifically to auditory hallucinations (AH), but relatively little attention has been given to examining the ability to analyse speaker identity. Hence, the current study assessed the ability to discriminate between different speakers in people with schizophrenia (including 33 with and 32 without AH) compared to 32 healthy controls. Participants rated the degree of perceived identity similarity of pairs of unfamiliar voices pronouncing three-syllable words. Multidimensional scaling of the dissimilarity matrices was performed and the resulting dimensions were interpreted, a posteriori, via correlations with acoustic measures relevant to voice identity. A two-dimensional perceptual space was found to be appropriate for both schizophrenia patients and controls, with axes corresponding to the average fundamental frequency (F0) and formant dispersion (D(f)). Patients with schizophrenia did not differ from healthy controls in their reliance on F0 in differentiating voices, suggesting that the ability to use pitch-based cues for discriminating voice identity may be relatively preserved in schizophrenia. On the other hand, patients (both with and without AH) made less use of D(f) in discriminating voices compared to healthy controls. This distorted pattern of responses suggests some potentially important differences in voice identity processing in schizophrenia. Formant dispersion has been linked to perceptions of dominance, masculinity, size and age in healthy individuals. These findings open some interesting new directions for future research. PMID:22910275

Chhabra, Saruchi; Badcock, Johanna C; Maybery, Murray T; Leung, Doris

2012-10-01

170

"Doing Identity" in the Botswana Classroom: Negotiating Gendered Institutional Identities  

ERIC Educational Resources Information Center

Drawing on post-structural and post-colonial conceptions of gender, this paper explores multiple student masculinities and femininities in the classrooms of four junior secondary schools in Botswana. These gendered identities, it is argued, are negotiated within broader institutional constraints that have been socio-historically produced. Such…

Humphreys, Sara

2013-01-01

171

Men as victims: "victim" identities, gay identities, and masculinities.  

PubMed

The impact and meanings of homophobic violence on gay men's identities are explored with a particular focus on their identities as men and as gay men. Homosexuality can pose a challenge to conventional masculinities, and for some gay men, being victimized on account of sexual orientation reawakens conflicts about their masculinity that they thought they had resolved. Being victimized can reinvoke shame that is rooted in failure or unwillingness to uphold masculine norms. For some gay men, victimization therefore has connotations of nonmasculinity that make being a victim an undesirable status, yet that status must be claimed to obtain a response from criminal justice or victim services. Men who experience homophobic abuse are helped by accepting a victim identity, but only if they can quickly move on from it by reconstructing a masculine gay (nonvictim) identity. This process can be facilitated by agencies such as the police and victim services, provided they help men exercise agency in "fighting back," that is, resisting further victimization and recovering. PMID:22610831

Dunn, Peter

2012-11-01

172

Blended Identities: Identity Work, Equity and Marginalization in Blended Learning  

ERIC Educational Resources Information Center

This article is a theoretical study of the self-presentation strategies employed by higher education students online; it examines student identity work via profile information and avatars in a blended learning environment delivered through social networking sites and virtual worlds. It argues that students are faced with difficult choices when…

Heikoop, Will

2013-01-01

173

Split Identity: Intransitive Judgments of the Identity of Objects  

ERIC Educational Resources Information Center

Identity is a transitive relation, according to all standard accounts. Necessarily, if "x = y" and "y = z," then "x = z." However, people sometimes say that two objects, "x" and "z," are the same as a third, "y," even when "x" and "z" have different properties (thus, "x = y" and "y = z," but "x is not equal to z"). In the present experiments,…

Rips, Lance J.

2011-01-01

174

Integrating Identities: Ethnic and Academic Identities among Diverse College Students  

ERIC Educational Resources Information Center

Background/Context: Students of Color continue to be underrepresented at the undergraduate level. Recent research has demonstrated the importance of non-academic psychosocial factors for understanding college experiences. One factor, identity, is a broad, multidimensional construct that comprises numerous distinct domains, including political,…

Walker, Lovey H. M.; Syed, Moin

2013-01-01

175

Status of personnel identity verifiers  

SciTech Connect

Identity verification devices based on the interrogation of six different human biometric features or actions now exist and in general have been in development for about ten years. The capability of these devices to meet the cost and operational requirements of speed, accuracy, ease of use and reliability has generally increased although the verifier industry is still immature. Sandia Laboratories makes a continuing effort to stay abreast of identity verifier developments and to assess the capabilities and improvements of each device. Operating environment and procedures more typical of field use can often reveal performance results substantially different from laboratory tests. An evaluation of several recently available verifiers is herein reported.

Maxwell, R.L.

1985-01-01

176

Absorption properties of identical atoms  

SciTech Connect

Emission rates and other optical properties of multi-particle systems in collective and entangled states differ from those in product ones. We show the existence of similar effects in the absorption probabilities for (anti)symmetrized states of two identical atoms. The effects strongly depend on the overlapping between the atoms and differ for bosons and fermions. We propose a viable experimental verification of these ideas. -- Highlights: •The absorption rates of a pair of identical atoms in product and (anti)symmetrized states are different. •The modifications of the optical properties are essentially determined by the overlapping between the atoms. •The absorption properties differ, in some cases, for bosons and fermions.

Sancho, Pedro, E-mail: psanchos@aemet.es

2013-09-15

177

RFID identity theft and countermeasures  

NASA Astrophysics Data System (ADS)

This paper reviews the ICAO security architecture for biometric passports. An attack enabling RFID identity theft for a later misuse is presented. Specific countermeasures against this attack are described. Furthermore, it is shown that robust high capacity digital watermarking for the embedding and retrieving of binary digital signature data can be applied as an effective mean against RFID identity theft. This approach requires only minimal modifications of the passport manufacturing process and is an enhancement of already proposed solutions. The approach may also be applied in combination with a RFID as a backup solution (damaged RFID chip) to verify with asymmetric cryptographic techniques the authenticity and the integrity of the passport data.

Herrigel, Alexander; Zhao, Jian

2006-02-01

178

Racial(ized) Identity, Ethnic Identity, and Afrocentric Values: Conceptual and Methodological Challenges in Understanding African American Identity  

ERIC Educational Resources Information Center

A survey of the literature reveals that there is conceptual confusion and inconsistent and sometimes inappropriate usage of the terms racial identity, ethnic identity, and Afrocentric values. This study explored the extent to which Black racial(ized) identity attitudes were related to ethnic identity and Afrocentric cultural values. Two hundred…

Cokley, Kevin O.

2005-01-01

179

Beyond pain and protection: politics of identity and iban girls in Korea.  

PubMed

This study analyzes the complexities in the exploration of iban girls' identities and the various ways how girls appropriate varied sources such as popular culture to examine the heterogeneousness of identity explorations and rethink the politics of identities. Against the tendency in current discourse on homosexual youth in Korea, protection discourse and pain discourse, the notion of identity itself will be critically examined and the girls' agency in destabilizing heteronormativity will be discussed. This study also deals with the appropriation of popular culture by the girls, suggesting that cultural critiques should reveal complex dynamics in concrete experiences. doi:10.1300/J155v10n03_04. PMID:17210558

Lee, Ji-eun

2006-01-01

180

Identity disturbance in distant patients.  

PubMed

Chronically distant, emotionally isolated patients often present with identity disturbance. Identity, it is argued, develops as a thematic pattern of narcissism, shaped by the nature of the mother's early libidinal influences on the child's sense of self. Identity provides a form of self-definition that addresses the question, Who am I? In the treatment of these patients, resistances to narcissistic vulnerabilities (narcissistic resistances) provide an illusory sense of security and induce the analyst to avoid attention to a central pathological problem: primitive and frightening needs for, and unconscious fantasies of, dependence on, and functionality for, another. Patients' avoidance of material and therapeutic interactions that deal with their dependencies are aspects of a tacit contract with the analyst to foreclose examination of their considerable problems with inner stability. Among these problems are anxieties regarding intrusion and loss of separateness. As analysis proceeds, elements of such a patient's identity become clarified and are used to understand and organize the material for both analyst and patient. This can allow the patient to articulate a more embodied and vital experience of individuality. A case is presented to illustrate the analysis of a patient using this approach. PMID:23526544

Hoffman, Irwin

2013-04-01

181

Immigrant Identity in Teacher Preparation  

ERIC Educational Resources Information Center

In this article, I report research on representations of immigrant identities in one university where teacher candidates matriculated in undergraduate and graduate degree programs. The case study occurred in a community where immigrants were highly visible. A content analysis of curriculum for teacher preparation provided a view of factors that…

Carter, Candice C.

2012-01-01

182

Anorexia Nervosa in Identical Triplets  

Microsoft Academic Search

The cause of anorexia nervosa (AN) is unclear, but is likely multifactorial, including psychological, familial, environmental, societal, genetic, and other biological factors. This case report of identical 12- year-old female triplets simultaneously concordant for AN illustrates the importance of addressing all these components in evaluation and treatment, and the difficulty of determining the relative impor- tance of each factor in

Mae S. Sokol; Anna K. Carroll; Denise M. Heebink; Kristina M. Hoffman-Rieken; Christine S. Goudge; Douglas D. Ebers

183

Eriksonian Identity Theory in Counterterrorism  

Microsoft Academic Search

Certain terrorists come from unexpected backgrounds. They give up comfortable lives and opportunities in order to wage jihad. Their existence has puzzled various theorists since they came to light. This article will explain how a theory of psychosocial identity formation created by Erik Erikson and his student James Marcia may explain this phenomenon. It will also explain how Erikson's theoretical

Cally OBrien

2010-01-01

184

Black Identity and Curriculum Change  

ERIC Educational Resources Information Center

Argues, on the basis of experiences with a black studies course at Tulse Hill, South London, that - young black people must find their own identity; that present curricula distort the relationship between different races; and that the local educational authorities must take a positive view of the situation, or else any advances will be piecemeal.…

Woodroffe, Bev

1975-01-01

185

Extracting entanglement from identical particles.  

PubMed

Identical particles and entanglement are both fundamental components of quantum mechanics. However, when identical particles are condensed in a single spatial mode, the standard notions of entanglement, based on clearly identifiable subsystems, break down. This has led many to conclude that such systems have limited value for quantum information tasks, compared to distinguishable particle systems. To the contrary, we show that any entanglement formally appearing amongst the identical particles, including entanglement due purely to symmetrization, can be extracted into an entangled state of independent modes, which can then be applied to any task. In fact, the entanglement of the mode system is in one-to-one correspondence with the entanglement between the inaccessible identical particles. This settles the long-standing debate about the resource capabilities of such states, in particular spin-squeezed states of Bose-Einstein condensates, while also revealing a new perspective on how and when entanglement is generated in passive optical networks. Our results thus reveal new fundamental connections between entanglement, squeezing, and indistinguishability. PMID:24785015

Killoran, N; Cramer, M; Plenio, M B

2014-04-18

186

Extracting Entanglement from Identical Particles  

NASA Astrophysics Data System (ADS)

Identical particles and entanglement are both fundamental components of quantum mechanics. However, when identical particles are condensed in a single spatial mode, the standard notions of entanglement, based on clearly identifiable subsystems, break down. This has led many to conclude that such systems have limited value for quantum information tasks, compared to distinguishable particle systems. To the contrary, we show that any entanglement formally appearing amongst the identical particles, including entanglement due purely to symmetrization, can be extracted into an entangled state of independent modes, which can then be applied to any task. In fact, the entanglement of the mode system is in one-to-one correspondence with the entanglement between the inaccessible identical particles. This settles the long-standing debate about the resource capabilities of such states, in particular spin-squeezed states of Bose-Einstein condensates, while also revealing a new perspective on how and when entanglement is generated in passive optical networks. Our results thus reveal new fundamental connections between entanglement, squeezing, and indistinguishability.

Killoran, N.; Cramer, M.; Plenio, M. B.

2014-04-01

187

Trig Integrals without Trig Identities  

ERIC Educational Resources Information Center

The standard approach to finding antiderivatives of trigonometric expressions such as sin(ax) cos(bx) is to make use of certain trigonometric identities. The disadvantage of this technique is that it gives no insight into the problem, but relies on students using a memorized formula. This note considers a technique for finding antiderivatives of…

Sprows, David J.

2008-01-01

188

[Identity and narration: autobiographical quests].  

PubMed

This paper aims to tackle the subtle relation between autobiographical narratives and identity construction, from a non essentialist conception of identity. In a perspective that articulates philosophy of language, psychoanalysis, semiotics and literary critique, we posit the concept of biographical space as an analytical instrument to make a critical update of the reconfiguration of identities and subjectivities in contemporary culture, marked by the predominance of the biographical, the private and a kind of "public intimacy". This look is more symptomatic than descriptive: it intends to account for the rise of auto/biographical narratives and life-stories, from canonic genres to their multiple derivations in the media, social networks and the most diverse artistic practices, a phenomenon that seems to reaffirm the notion of narrative identities by Ricoeur. Our analysis here, from an ethic, aesthetic and political point of view, will focus on two visual arts experiences that have recently taken place for the first time in Buenos Aires: Christian Boltanski's and Tracey Emin's, solo exhibitions, each of them with a different biographical approach. PMID:24251298

Arfuch, Leonor

2013-01-01

189

Relative/Identical Semantic Structuralization  

ERIC Educational Resources Information Center

Discusses the teaching of Afrikaans and English to speakers of Xhosa, with semantics as the point of focus. The purpose is to aid the teaching of Afrikaans and English by introducing componential analysis in order to compare the relative/identical aspects of semantic structuralization in these languages with those in Xhosa. (Author/RM)

Stanley, George Edward

1976-01-01

190

6 Keys to Identity Management  

ERIC Educational Resources Information Center

An Identity and Access Management (IAM) project on campus can feel like a Sisyphean task: Just when access rights have finally been sorted out, the semester ends--and users change roles, leave campus, or require new processes. IT departments face a constantly changing technical landscape: (1) integrating new applications and retiring old ones; (2)…

Shoham, Idan

2011-01-01

191

Gender Identity Disorder in Children.  

ERIC Educational Resources Information Center

Identity formation involves the development of self esteem, social skills, and a sense of self. Many gay and lesbian adults have noted that they were aware of their attraction to members of the same sex as early as five- and six-years-old. Reactions they received from parents and others often added to their stress. Following a description of the…

Redmond, Dionne; Flauto, Phil

192

New specs for arteriovenous identity.  

PubMed

In this issue of Blood, Aranguren et al. provide new insights into the molecular mechanisms that determine the identity of human endothelial cells: i.e., will they line arteries or veins? The findings have implications in our understanding of vascular disease and in the design of vascular-specific therapies and tissue engineering. PMID:24311717

Conway, Edward M

2013-12-01

193

Tracing the Identity of Objects  

Microsoft Academic Search

This article considers how people judge the identity of objects (e.g., how people decide that a description of an object at one time, t0, belongs to the same object as a description of it at another time, t1). The authors propose a causal continuer model for these judgments, based on an earlier theory by Nozick (1981). According to this model,

Lance J. Rips; Sergey Blok; George Newman

2006-01-01

194

Developing Designer Identity through Reflection  

ERIC Educational Resources Information Center

As designers utilize design thinking while moving through a design space between problem and solution, they must rely on design intelligence, precedents, and intuition in order to arrive at meaningful and inventive outcomes. Thus, instructional designers must constantly re-conceptualize their own identities and what it means to be a designer.…

Tracey, Monica W.; Hutchinson, Alisa

2013-01-01

195

Imperialism and Samoan National Identity.  

ERIC Educational Resources Information Center

Political division and domination by different foreign powers have given birth to national identity problems which Samoans face both at home and abroad. Community leaders should put aside antagonistic feelings among themselves and restore appreciation for the "faasamoa," that body of customs and traditions once shared by all Samoans. (GC)

Milford, Sereisa

1986-01-01

196

Vital signs of identity [biometrics  

Microsoft Academic Search

Biometrics is emerging as the most foolproof method of automated personal identification in demand in an ever more automated world. Biometric systems are automated methods of verifying or recognizing the identity of a living person on the basis of some physiological characteristic, like a fingerprint or iris pattern, or some aspect of behavior, like handwriting or keystroke patterns. This paper

B. Miller

1994-01-01

197

The Roots of Our Identity.  

ERIC Educational Resources Information Center

Maintains that Switzerland's national spirit lies in cultural and linguistic diversity. Proposes a "Ten Commandments of Multilingualism" for Swiss citizens who share this core principle of national identity. Concludes that Swiss should be happy and proud to have a nation based on cultural diversity. (CFR)

Cotti, Flavio

1993-01-01

198

Zero knowledge proofs of identity  

Microsoft Academic Search

In this paper we extend the notion of zero knowledge proofs of membership (which reveal one bit of information) to zero knowledge proofs of knowledge (which reveal no information whatsoever). After formally defining this notion, we show its relevance to identification schemes, in which parties prove their identity by demonstrating their knowledge rather than by proving the validity of assertions.

U. Fiege; Amos Fiat; Adi Shamir

1987-01-01

199

Music Education and Cultural Identity  

ERIC Educational Resources Information Center

Renewed interest in the relationship between music education and cultural identity draws its vigor from strongly divergent sources. Globalized education and globalized musical culture supply new paradigms for understanding the central tasks of music education and their responsibility to a multicultural ethic of diversity, hybridity and difference.…

Davis, Robert A.

2005-01-01

200

Restoring Ancestral Language, Restoring Identity.  

ERIC Educational Resources Information Center

Describes the Cherokee Language Renewal Program that was designed to help Cherokee elementary school children learn to function in the dominant culture without sacrificing their own cultural heritage. Explains how the program got started, and reports on how it helps restore a cultural identify to a people who are at risk of losing their identity.…

Bannon, Kay T.

1999-01-01

201

Identity Representations in Visual Texts  

ERIC Educational Resources Information Center

In an attempt to address minority issues with Israeli Arab English-as-a-foreign-language ninth-grade students, I as a teacher researcher introduced picture books on the issue and invited students to respond in different modes, one of which was artistic. In one of the lessons, students created collages to represent their identities. In this…

Hayik, Rawia

2012-01-01

202

Identities for the Fibonacci Powers  

ERIC Educational Resources Information Center

Based on the generating functions, for any positive integers "n" and "k", identities are established and the explicit formula for a[subscript i](k) in terms of Fibonomial coefficients are presented. The corresponding results are extended to some other famous sequences including Lucas and Pell sequences.

Chen, Alex; Chen, Hongwei

2008-01-01

203

Personal Identity: Moving beyond Essence  

ERIC Educational Resources Information Center

Education's ancient and profoundly important pursuit to "know thyself", is often realised through engaging with the question "who am I?" In order to the identify "who" in this search, it is argued in this paper that personal identity should be understood to be embedded in the purposes one has for one's life through "how" one relates, and is…

Webster, R. Scott

2005-01-01

204

Counselor Identity: Conformity or Distinction?  

ERIC Educational Resources Information Center

The authors explore 3 debates in other disciplines similar to counseling's identity debate in order to learn about common themes and outcomes. Conformity, distinction, and cohesion emerged as common themes. They conclude that counselors should retain their distinctive, humanistic approach rather than conforming to the dominant, medical approach.

McLaughlin, Jerry E.; Boettcher, Kathryn

2009-01-01

205

Teacher Identity Work in Mathematics Teacher Education  

ERIC Educational Resources Information Center

Becoming a teacher is not developing an identity, but is developing identity as a continuous process of constructing and deconstructing understandings within the complexities of social practice, beliefs, experiences, and social norms. I take up this stance on identity as articulated in Judith Butler's (1999) work with gender identity and…

Neumayer-Depiper, Jill

2013-01-01

206

The Moral Self: Applying Identity Theory  

ERIC Educational Resources Information Center

This research applies identity theory to understand the moral self. In identity theory, individuals act on the basis of their identity meanings, and they regulate the meanings of their behavior so that those meanings are consistent with their identity meanings. An inconsistency produces negative emotions and motivates individuals to behave…

Stets, Jan E.; Carter, Michael J.

2011-01-01

207

Forming new national identities: a retrospective  

Microsoft Academic Search

The ideas of national identity were formed under a modernist framework. But, increasingly, national identities exist and are recreated under new postmodern structures. These new identities stem from different dimensions of the social experience and are found at different scales. By and large, these postmodern identities reflect paradigmatic changes in human society, from political and economic changes to major technological

Igor Jelen

2011-01-01

208

The Development of Ethnic Identity in Adolescents.  

ERIC Educational Resources Information Center

This paper presents a model and some empirical research on the process of ethnic identity development beyond childhood. Several models of ethnic identity development among minorities share with Erikson the idea that an achieved identity is the result of an identity crisis, which involves a period of searching that leads to a commitment. In order…

Phinney, Jean S.

209

Resonance in an exemplar-based lexicon: The emergence of social identity and phonology  

Microsoft Academic Search

Two sets of data are discussed in terms of an exemplar-resonance model of the lexicon. First, a cross-linguistic review of vowel formant measurements indicate that phonetic differences between male and female talkers are a function of language, dissociated to a certain extent from vocal tract length. Second, an auditory word recognition study [Strand (2000). Gender Stereotype Effects in Speech Processing.

Keith Johnson

2006-01-01

210

Neural Responses to Expression and Gaze in the Posterior Superior Temporal Sulcus Interact with Facial Identity  

PubMed Central

Neural models of human face perception propose parallel pathways. One pathway (including posterior superior temporal sulcus, pSTS) is responsible for processing changeable aspects of faces such as gaze and expression, and the other pathway (including the fusiform face area, FFA) is responsible for relatively invariant aspects such as identity. However, to be socially meaningful, changes in expression and gaze must be tracked across an individual face. Our aim was to investigate how this is achieved. Using functional magnetic resonance imaging, we found a region in pSTS that responded more to sequences of faces varying in gaze and expression in which the identity was constant compared with sequences in which the identity varied. To determine whether this preferential response to same identity faces was due to the processing of identity in the pSTS or was a result of interactions between pSTS and other regions thought to code face identity, we measured the functional connectivity between face-selective regions. We found increased functional connectivity between the pSTS and FFA when participants viewed same identity faces compared with different identity faces. Together, these results suggest that distinct neural pathways involved in expression and identity interact to process the changeable features of the face in a socially meaningful way.

Baseler, Heidi A.; Harris, Richard J.; Young, Andrew W.; Andrews, Timothy J.

2014-01-01

211

Floating islands: Identity in the Caribbean  

Microsoft Academic Search

We, as human beings, know that to function autonomously, it is necessary to have a center, a self, an identity. Countries need identities too, based on a cultures and continuities that give footing and roots to the individual citizen’s identity. The twenty-first century abounds with identity issues—of individuals, culture groups, religions, and nations. This thesis investigates a unique identity question

Sharon Tevis Finch

2007-01-01

212

Two monozygotic (identical) twin pairs discordant for gender identity  

Microsoft Academic Search

Two pairs of monozygotic twins discordant for gender identity are described. The first set are 8-year-old males, one of whom enjoys doll play, cross-dressing, and taking the role of a female in fantasy games. His brother shows no feminine behavior, enjoys sports, and is more masculine in gestures and speech. The second set are 24-year-old females, one of whom wants

Richard Green; Robert J. Stoller

1971-01-01

213

Variational identities and Hamiltonian structures  

SciTech Connect

This report is concerned with Hamiltonian structures of classical and super soliton hierarchies. In the classical case, basic tools are variational identities associated with continuous and discrete matrix spectral problems, targeted to soliton equations derived from zero curvature equations over general Lie algebras, both semisimple and non-semisimple. In the super case, a supertrace identity is presented for constructing Hamiltonian structures of super soliton equations associated with Lie superalgebras. We illustrate the general theories by the KdV hierarchy, the Volterra lattice hierarchy, the super AKNS hierarchy, and two hierarchies of dark KdV equations and dark Volterra lattices. The resulting Hamiltonian structures show the commutativity of each hierarchy discussed and thus the existence of infinitely many commuting symmetries and conservation laws.

Ma Wenxiu [Department of Mathematics and Statistics, University of South Florida, Tampa, FL 33620-5700 (United States)

2010-03-08

214

Measuring identity multiplicity and intersectionality: Hierarchical Classes Analysis (HICLAS) of sexual, racial, and gender identities  

Microsoft Academic Search

We propose an innovative approach for measuring identity multiplicity and intersectionality—Hierarchical Classes Analysis (HICLAS) of an Assessment of Multiple Identities. This method allows researchers to assess characteristics of individual identities and model implicit interrelationships between multiple identities held by an individual. We found support for the validity of this approach through analysis of sexual, racial, and gender identities among 40

Michael J. Stirratt; Ilan H. Meyer; Suzanne C. Ouellette; Michael A. Gara

2008-01-01

215

Integrating Identities: The Relationships of Racial, Gender, and Ego Identities among White College Students  

ERIC Educational Resources Information Center

The authors proposed that racial and gender identities were related to ego identities based on common themes that exist across these different dimensions of identity. A sample of 300 White college students completed the White Racial Identity Attitude Scale (Helms & Carter, 199), the Womanliest Identity Attitude Scale (Ossana, Helms, & Leonard,…

Miville, Marie L.; Darlington, Pat; Whitlock, Brian; Mulligan, Timothy

2005-01-01

216

Multipurpose Identity-Based Signcryption  

Microsoft Academic Search

\\u000a Identity-Based (IB) cryptography is a rapidly emerging approach to public-key cryptography that does not require principals\\u000a to pre-compute key pairs and obtain certificates for their public keys—instead, public keys can be arbitrary identifiers such\\u000a as email addresses, while private keys are derived at any time by a trusted private key generator upon request by the designated\\u000a principals. Despite the flurry

Xavier Boyen

217

Territories and identities in Jerusalem  

Microsoft Academic Search

Jerusalem is a city of many contrasts. It is a historical-symbolic city, revered by Muslims, Christians and Jews. However, its citizens segregate ethno-nationally, culturally and socially, into different identity groups: Jews and Arabs, Haredi (`ultra-Orthodox') and secular Jews, and lower and upper class socio-economic groups. This essay focuses on how political and social struggles over territories reshape the nature of

Shlomo Hasson

2001-01-01

218

Correlates of identity configurations: three studies with adolescent and emerging adult cohorts.  

PubMed

Adolescence and emerging adulthood are two core developmental periods in which individuals can develop a meaningful identity across domains. However, there is a lack of studies exploring correlates of different identity configurations. The purpose of this article was to fill this gap in examining correlates of configurations characterized by identity stability or instability in both ideological and relational domains or identity stability in one domain and instability in the other domain. Three studies were presented. In the first study, we investigated links between identity configurations and internalizing problem behaviors in early and middle adolescents (N=1,891; M (age) =14; 55% female); in the second study, we focused on associations between identity configurations and identity functions in late adolescents and early emerging adults (N=1,085; M (age) =19; 63% female); in the third study, we investigated relationships between identity configurations, sense of coherence, and basic psychological need satisfaction in emerging adults (N=489; M (age) =21; 71% female). Overall, findings highlighted that participants experiencing a condition of identity stability in both domains reported a better profile than their peers displaying a condition of instability in both realms. Further, individuals with identity stability only in one domain reported intermediate scores and the effect provided by each domain varied according to the correlate examined and the age group taken into account. Implications of these findings are discussed. PMID:21809219

Crocetti, Elisabetta; Scrignaro, Marta; Sica, Luigia Simona; Magrin, Maria Elena

2012-06-01

219

Perception, experience and body identity.  

PubMed

Physician has to know the patient in the disease and not only the disease in the patient, from the dual perspective of the body as object and the body as subject. This also affects the patient who has to cope with the reality of having a body that bursts into the subject's consciousness as a vital threat, as source of discomfort and inability and being a body (Marcel). The human body in its dual aspect has been and is a great unknown, if not a great outrage in spite of the fact that we are our body and our body is each of us. We sometimes do not feel as we are and thus a confrontation arises, sometimes more normal, others more morbid. This forces the physician to face complex ethics considerations and the scientist to accept a personal identity disorder. Dualism considers that there are two substances in us, one that distinguishes us from other beings and from the rest of the individuals of the human species, the soul, the psychic life, mind or consciousness, and another more insubstancial one, the body. The aim of the first substance is to dominate the body, to survive it after death when it is, already a corpse is meant to become putrefied, is buried, incinerated or thrown to the depth of the sea. This dualism aims to explain the origin of the evil and the attitude to defeat it and it does so efficiently. This anthropology has very ancient roots (the Upvanishads, in the orphic texts, in Plato), it is the core of Gnostic thought and the foundation of the modern science since Descartes. Some monist perspectives are a masked dualism or a mereologic fallacy, according to which, the brain is conscious, when that what is conscious is the subject, although the subject, with the brain could not be conscious. Therefore, a new perspective is proposed, chiasmatic or janicular monism, that considers the adaptive value of focusing on the reality from two perspectives, as physical universe and the world of interpersonal relationships. In the agnosias and in the phantom limb there is a confrontation between the body object and the body subject that has made it possible to investigate how the perception of the own body is and how the brain generates the schema and the body image. The study of the body experience, from the phenomenology and the anthropological psychiatry perspective, has made it possible to go greater in-depth into the knowledge of the alterations of the experience of the own body in different mental diseases, especially in those in which a confrontation between the body and the personal identity arises makes it necessary to consider the process of individual identification and a category of personal identity disorders that would include body dysmorphic disorder, erythrophobia, anorexia nervosa, body integrity identity as well as the gender-type disorders (transsexualism, nonfetishistic transvestism, gender identity disorder during childhood). Key words: Dualism, Monism, Agnosia, Phantom limb, Cenesthesia, Body schema, Body image, Body experience, Personal identity disorders, Body dysmorphic disorder, Anorexia nervosa, Personal integrity identity disorder. PMID:22990877

López-Ibor, Juan J; Ortiz, Tomás; López-Ibor, María I

2011-12-01

220

Explicit approximations for strictly nonlinear oscillators with slowly varying parameters with applications to free electron lasers  

Microsoft Academic Search

The first part of this paper summarizes the mathematical modeling of free electron lasers (FEL), and the remainder concerns general perturbation methods for solving free electron laser (FEL) and other strictly nonlinear oscillatory problems with slowly varying parameters and small perturbations. We review and compare the methods of Kuzmak-Luke and of near-identity averaging transformations. In order to implement the calculation

J. Kevorkian; Y. P. Li

1987-01-01

221

Split identity: intransitive judgments of the identity of objects.  

PubMed

Identity is a transitive relation, according to all standard accounts. Necessarily, if x=y and y=z, then x=z. However, people sometimes say that two objects, x and z, are the same as a third, y, even when x and z have different properties (thus, x=y and y=z, but x?z). In the present experiments, participants read stories about an iceberg that breaks into two icebergs, one to the east and the other to the west. Many participants (32-54%, in baseline conditions across experiments) decided that both successors were the original iceberg, despite the different spatial locations of the successors. Experiment 1 shows that this tendency is not due to participants failing to understand both to mean both are simultaneously the original. Similarly, Experiment 2 demonstrates that the tendency is not solely due to their interpreting the question to be about properties of the icebergs rather than about the icebergs themselves. Experiments 3 and 4 suggest, instead, that participants may understand Which is the original? to mean Which, in its own right, is entitled to be the original? Emphasizing entitlement increases the number of seemingly intransitive responses, whereas emphasizing the formal properties of identity decreases them. PMID:21345427

Rips, Lance J

2011-06-01

222

Children's Concepts of Identity: A New Method.  

National Technical Information Service (NTIS)

A new technique for testing childrens' concepts of subjective identity was tested. This involved asking children the consequences of various body part transplants, including the brain, to a person's identity. Results indicate that during the school years ...

C. N. Johnson

1981-01-01

223

40 CFR 725.85 - Microorganism identity.  

Code of Federal Regulations, 2010 CFR

...2009-07-01 2009-07-01 false Microorganism identity. 725.85 Section...REQUIREMENTS AND REVIEW PROCESSES FOR MICROORGANISMS Confidentiality and Public Access to Information § 725.85 Microorganism identity. (a)...

2009-07-01

224

40 CFR 725.85 - Microorganism identity.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Microorganism identity. 725.85 Section...REQUIREMENTS AND REVIEW PROCESSES FOR MICROORGANISMS Confidentiality and Public Access to Information § 725.85 Microorganism identity. (a)...

2010-07-01

225

40 CFR 725.85 - Microorganism identity.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Microorganism identity. 725.85 Section...REQUIREMENTS AND REVIEW PROCESSES FOR MICROORGANISMS Confidentiality and Public Access to Information § 725.85 Microorganism identity. (a)...

2013-07-01

226

Higher identities for the ternary commutator  

NASA Astrophysics Data System (ADS)

We use computer algebra to study polynomial identities for the trilinear operation [a, b, c] = abc - acb - bac + bca + cab - cba in the free associative algebra. It is known that [a, b, c] satisfies the alternating property in degree 3, no new identities in degree 5, a multilinear identity in degree 7 which alternates in 6 arguments, and no new identities in degree 9. We use the representation theory of the symmetric group to demonstrate the existence of new identities in degree 11. The only irreducible representations of dimension <400 with new identities correspond to partitions 25, 1 and 24, 13 and have dimensions 132 and 165. We construct an explicit new multilinear identity for partition 25, 1 and we demonstrate the existence of a new non-multilinear identity in which the underlying variables are permutations of a2b2c2d2e2f.

Bremner, M. R.; Peresi, L. A.

2012-12-01

227

Racial and Ethnic Identity and Development.  

ERIC Educational Resources Information Center

Defines racial and ethnic identity and stresses the importance of examining these concepts from multidimensional perspectives. Discusses models of racial and ethnic identity and explains how educators can create positive multicultural learning communities. (SK)

Chavez, Alicia Fedelina; Guido-DiBrito, Florence

1999-01-01

228

Practicing Identity: A Crafty Ideal?  

NASA Astrophysics Data System (ADS)

This paper focuses on the materialization of technological practices as a form of identity expression. Contextual analyses of a Mycenaean workshop area in the Late Bronze Age citadel of Tiryns (Argolis, Greece) are presented to investigate the interaction of different artisans under changing socio-political and economic circumstances. The case study indicates that although certain technological practices are often linked to specific crafts, they do not necessarily imply the separation of job tasks related to the working of one specific material versus another. Shared technological practices and activities, therefore, may be a factor in shaping cohesive group identities of specialized artisans. Since tracing artisans' identities is easier said than done on the basis of excavated materials alone, we employ the concepts of multiple chaînes opératoires combined with cross-craft interactions as a methodology in order to retrieve distinctive sets of both social and technological practices from the archaeological remains. These methodological concepts are not restricted to a specific set of steps in the production cycle, but ideally encompass reconstructing contexts of extraction, manufacture, distribution and discard/reuse for a range of artefacts. Therefore, these concepts reveal both technological practices, and, by contextualising these technological practices in their spatial layout, equally focus on social contacts that would have taken place during any of these actions. Our detailed contextual study demonstrates that the material remains when analysed in their entirety are complementary to textual evidence. In this case study they even form a source of information on palatial spheres of life about which the fragmentary Linear B texts, so far, remain silent.

Brysbaert, A.; Vetters, M.

229

IDENTITY OF STAPHYLOCOCCUS EPIDERMIDIS1  

PubMed Central

Jones, Dorothy (American Meat Institute Foundation, Chicago, Ill.), R. H. Deibel, and C. F. Niven, Jr. Identity of Staphylococcus epidermidis. J. Bacteriol. 85:62–67. 1963.—The species Staphylococcus epidermidis is defined more precisely, and compared with other staphylococci. The physiological characteristics considered to be of primary import are: (i) ability to grow anaerobically in a defined complex medium with glucose or pyruvate as the energy source; (ii) inability to produce coagulase; (iii) ability to ferment serine as an energy source; (iv) the requirement for biotin and uracil (under anaerobic conditions) in a semisynthetic medium; and (v) inability to reduce nitrate beyond nitrite.

Jones, Dorothy; Deibel, R. H.; Niven, C. F.

1963-01-01

230

Codimensions of generalized polynomial identities  

SciTech Connect

It is proved that for every finite-dimensional associative algebra A over a field of characteristic zero there are numbers C element of Q{sub +} and t element of Z{sub +} such that gc{sub n}(A){approx}Cn{sup t}d{sup n} as n{yields}{infinity}, where d=PI exp(A) element of Z{sub +}. Thus, Amitsur's and Regev's conjectures hold for the codimensions gc{sub n}(A) of the generalized polynomial identities. Bibliography: 6 titles.

Gordienko, Aleksei S [M. V. Lomonosov Moscow State University, Faculty of Mechanics and Mathematics, Moscow (Russian Federation)

2010-02-28

231

The ontogeny of career identities in adolescence.  

PubMed

Exploration and identity formation are primary developmental tasks during adolescence and the transition to adulthood. Yet little is known about occupational identity formation and growth during this period of life. In this chapter, the authors describe their ongoing research on this topic. First, they present their findings on the ontogeny of the complexity of career identities. Then they discuss their findings regarding the relationship between early career identity formation and psychological well-being at ages nineteen and twenty-one. PMID:21154834

Malanchuk, Oksana; Messersmith, Emily E; Eccles, Jacquelynne S

2010-01-01

232

Former Spouses Exiting Role-Identities  

Microsoft Academic Search

Understanding role-identity exit is as important as un- derstanding entrance inlo roles and emergence of role-identities since individuals frequently abandon and lose their roles. This study explores the process of exiting role-identities chat individuals experience during the divorce and postdivorce interactions. Results indicate a different role-identity exit process for initiators than for noniniuators, although members of each group passed through

Candan Duran-Aydintug

1996-01-01

233

Positional Identity and Science Teacher Professional Development  

ERIC Educational Resources Information Center

The aim of this study was to understand the positional identity of three African American secondary science teachers. Positional identity was operationally defined in terms of race, ethnicity, economic status, gender, religion, and age. Positional identity was posited to inform why diverse teachers with differing knowledge and experiences in…

Moore, Felicia M.

2008-01-01

234

Foreign Language Teaching and Cultural Identity.  

ERIC Educational Resources Information Center

A collection of works on the role of cultural identity in second language learning and teaching includes: "Linguas estrangeiras e ideologia" (Roberto Ballalai); "Cultural Identity and Bilinguality" (Josiane F. Hamers, Michel Blanc); "Foreign Language Teaching and Cultural Identity" (Lakshmie K. Cumaranatunge); "Ensino de linguas estrangeiras e…

Nasr, Raja T., Ed.; And Others

235

Gender Identity and Adjustment in Middle Childhood  

Microsoft Academic Search

This article has two purposes. The first is to present a brief (and speculative) account of the developmental origins of the several components of gender identity featured in the multidimensional model of gender identity proposed by Egan and Perry (2001). The second is to offer additional empirical support for the construct and discriminant validity of the various gender identity dimensions.

Priscilla R. Carver; Jennifer L. Yunger; David G. Perry

2003-01-01

236

Developing a Leadership Identity: A Grounded Theory  

Microsoft Academic Search

This grounded theory study on developing a leadership identity revealed a 6-stage develop- mental process. The thirteen diverse students in this study described their leadership identity as moving from a leader-centric view to one that embraced leadership as a collaborative, relational process. Developing a leadership identity was connected to the categories of developmental influences, developing self, group influences, students' changing

Susan R. Komives; Julie E. Owen; Susan D. Longerbeam; Felicia C. Mainella; Laura Osteen

2005-01-01

237

Retirees' Social Identity and Satisfaction with Retirement  

ERIC Educational Resources Information Center

The purpose of this study was to examine the structure of retirees' social identity and its impact on satisfaction with retirement. From social identity theory formulations, we assumed that (1) retiree-identity was comprised of three distinct components (cognitive, evaluative, and affective), and (2) only the affective component would play a role…

Michinov, Estelle; Fouquereau, Evelyne; Fernandez, Anne

2008-01-01

238

Expanding Directions for Racial Identity Research.  

ERIC Educational Resources Information Center

Responds to two opening articles by Parham ("Cycles of Psychological Nigrescence") and Helms ("Considering Some Methodological Issues in Racial Identity Counseling Research"). Provides suggestions for expanding and testing models of racial identity development, and calls for expanded methods of measuring racial identity, and for a cross-cultural…

Ponterotto, Joseph G.

1989-01-01

239

Career Identity among Community College Students  

ERIC Educational Resources Information Center

Career identity development is salient in adolescence and young adulthood, but little research has assessed career identity in populations other than four-year college students. Context should be considered when examining career identity, and to address this gap in the literature, the current study examined the extent to which parental support for…

Stringer, Kate J.; Kerpelman, Jennifer L.

2014-01-01

240

Dehistoricized Cultural Identity and Cultural Othering  

ERIC Educational Resources Information Center

The assumption that each culture has its own distinctive identity has been generally accepted in the discussion of cultural identities. Quite often identity formation is not perceived as a dynamic and interactive ongoing process that engages other cultures and involves change in its responses to different challenges at different times. I will…

Weiguo, Qu

2013-01-01

241

Racial and Ethnic Identities in American Society.  

ERIC Educational Resources Information Center

The investigation of race relations, of social problems related to race and ethnicity, and of different racial and social groups, all presume prior information about the definition of racial or ethnic group identity, about the formation, maintenance, and dissolution of such identities, and about the importance of such identities in American…

Yin, Robert K.

242

Ego Identity, Egocentrism, and Formal Operations.  

ERIC Educational Resources Information Center

Examined the relationship between ego identity, formal operations, and egocentrism in adolescents. Results indicated significant positive correlations between ego identity and formal operations and between ego identity and grade in school. Grade in school explained 21 percent of the variance while formal operational thinking, egocentrism, and sex…

Protinsky, Howard; Wilkerson, Jackie

1986-01-01

243

Japanese Male Gay and Bisexual Identity  

Microsoft Academic Search

Few studies have ever dealt with Japanese male gay and bisexual identity. This exploratory study investigated gay and bisexual identity through interviews of 34 Japanese gay and bisexual men. Though Japan has unique cultural aspects that are different from Western countries, it can be shown that Western concepts or models of homosexual identity are applicable to a considerable extent to

Masashi Harada

2002-01-01

244

Social transformation, collective categories, and identity change  

Microsoft Academic Search

Changes in collective categories of identity are at the core of social transformation. The causal linkages among identity change, institutional change, and change in modes of practice are, however, complex. Developing and adapting ideas from Pierre Bourdieu's work, this article shows the coexistence in tension of a plurality of elements within each collective identity category. On this basis, it proposes

Jennifer Todd

2005-01-01

245

American Identity in the USA: Youth Perspectives  

ERIC Educational Resources Information Center

National identity, how one sees oneself as a member of a given nation, is an important form of social identity. Feelings toward one's country are a matter of both individual and collective concern. In an increasingly diverse world, the issue of identifying with a nation is complex and consequential for individual identity formation as well as…

Jahromi, Parissa

2011-01-01

246

Efficient Encoding and Rendering of Time-Varying Volume Data  

NASA Technical Reports Server (NTRS)

Visualization of time-varying volumetric data sets, which may be obtained from numerical simulations or sensing instruments, provides scientists insights into the detailed dynamics of the phenomenon under study. This paper describes a coherent solution based on quantization, coupled with octree and difference encoding for visualizing time-varying volumetric data. Quantization is used to attain voxel-level compression and may have a significant influence on the performance of the subsequent encoding and visualization steps. Octree encoding is used for spatial domain compression, and difference encoding for temporal domain compression. In essence, neighboring voxels may be fused into macro voxels if they have similar values, and subtrees at consecutive time steps may be merged if they are identical. The software rendering process is tailored according to the tree structures and the volume visualization process. With the tree representation, selective rendering may be performed very efficiently. Additionally, the I/O costs are reduced. With these combined savings, a higher level of user interactivity is achieved. We have studied a variety of time-varying volume datasets, performed encoding based on data statistics, and optimized the rendering calculations wherever possible. Preliminary tests on workstations have shown in many cases tremendous reduction by as high as 90% in both storage space and inter-frame delay.

Ma, Kwan-Liu; Smith, Diann; Shih, Ming-Yun; Shen, Han-Wei

1998-01-01

247

Gender-Role Identity and Perceived Peer Group Acceptance among Early Adolescents in Belgian Mixed and Single-Sex Schools  

ERIC Educational Resources Information Center

Drawing on survey data, this paper explores the association between early adolescents' gender-role identity and sense of peer group acceptance, and how this association may vary as a function of the gender context of the school. Two indicators of gender-role identity were included in the analysis: in one measure the items reflect features of…

Brutsaert, Herman

2006-01-01

248

Silos and Social Identity: The Social Identity Approach as a Framework for Understanding and Overcoming Divisions in Health Care  

PubMed Central

Context One of health care's foremost challenges is the achievement of integration and collaboration among the groups providing care. Yet this fundamentally group-related issue is typically discussed in terms of interpersonal relations or operational issues, not group processes. Methods We conducted a systematic search for literature offering a group-based analysis and examined it through the lens of the social identity approach (SIA). Founded in the insight that group memberships form an important part of the self-concept, the SIA encompasses five dimensions: social identity, social structure, identity content, strength of identification, and context. Findings Our search yielded 348 reports, 114 of which cited social identity. However, SIA-citing reports varied in both compatibility with the SIA's metatheoretical paradigm and applied relevance to health care; conversely, some non-SIA-citers offered SIA-congruent analyses. We analyzed the various combinations and interpretations of the five SIA dimensions, identifying ten major conceptual currents. Examining these in the light of the SIA yielded a cohesive, multifaceted picture of (inter)group relations in health care. Conclusions The SIA offers a coherent framework for integrating a diverse, far-flung literature on health care groups. Further research should take advantage of the full depth and complexity of the approach, remain sensitive to the unique features of the health care context, and devote particular attention to identity mobilization and context change as key drivers of system transformation. Our article concludes with a set of “guiding questions” to help health care leaders recognize the group dimension of organizational problems, identify mechanisms for change, and move forward by working with and through social identities, not against them.

Kreindler, Sara A; Dowd, Damien A; Dana Star, Noah; Gottschalk, Tania

2012-01-01

249

Variation in genetic identity among relatives.  

PubMed

Genetic identity, or genetic relatedness, among relatives, is a key concept in kin recognition, which in turn is important in models for inclusive fitness and inbreeding avoidance. A mathematical definition is presented for the genetic identity based on the proportion of genome shared identical by descent by two relatives. The method of Guo [Am J Hum Genet 1995;56:1468-1476] is used to compute the variance of the genetic identity for various types of relationships. The method is versatile and can handle any kind of relationship. To illustrate the method, the standard errors of the genetic identity using published human genetic maps are computed. PMID:8666414

Guo, S W

1996-01-01

250

Does Work Make the Man: Masculine Identity and Work Identity during the Transition to Retirement.  

National Technical Information Service (NTIS)

The study examines differences in masculine identity and work identity in a cross-section of men at various stages of the transition to retirement. Masculine identity and work identity refer to how closely one identifies with male sex-role expectations an...

T. J. Gradman

1990-01-01

251

Bridging Identities and Disciplines: Advances and Challenges in Understanding Multiple Identities  

ERIC Educational Resources Information Center

The chapters in this volume address the need for a better understanding of the development of intersecting identities over age and context. The chapters provide valuable insights into the development of identities, particularly group identities. They highlight common processes across identities, such as the role of contrast and comparison and the…

Phinney, Jean S.

2008-01-01

252

Racial Identity Attitudes and Ego Identity Statuses in Dominican and Puerto Rican College Students  

ERIC Educational Resources Information Center

This study explored the relation between racial identity attitudes and ego identity statuses in 94 Dominican and Puerto Rican Latino college students in an urban public college setting. Simultaneous regression analyses were conducted to test the relation between racial identity attitudes and ego identity statuses, and findings indicated that…

Sanchez, Delida

2013-01-01

253

Ambivalent Urban, Immigrant Identities: The Incompleteness of Lao American Student Identities  

ERIC Educational Resources Information Center

In this article, the author elucidates the identity work of Lao American urban, immigrant students, highlighting ambivalent identities that do not fit into notions of bicultural or binary identities. It examines the various discourses and practices that inform and shape the experiences and identities of urban, Lao American high school students. It…

Ngo, Bic

2009-01-01

254

Identity: recent findings and clinical implications.  

PubMed

After a review of foundational contributions to the concept of identity, including Erikson's, the author discusses the research methods and findings of the Personality Disorders Institute of the Joan and Sanford I. Weill Medical College of Cornell University regarding the concepts of normal identity and identity diffusion, toward an elucidation of the psychopathology of personality disorders--their etiology, diagnosis, and treatment. The application of an object relations theory model to analyze the development of identity clarifies the relationship of individual identity with the social and cultural frame that influences identity formation and may amplify the effects of pathological identity development. Detailed excerpts are presented from a diagnostic structural interview at the Personality Disorders Institute. PMID:17094369

Kernberg, Otto F

2006-10-01

255

IDENTITY TALK IN THE PEACE AND JUSTICE MOVEMENT  

Microsoft Academic Search

This article examines identity talk in several peace movement organizations from 1982 to 1991. Identity talk directs attention to how identity discourse concretizes activists' perceptions of social movement dramas, demonstrates personal identity, reconstructs individuals' biographies, imputes group identities, and aligns personal and collective identities. Six types of identity talk are identified and illustrated: associational declarations, disillusionment anecdotes, atrocity tales, personal

SCOTT A. HUNT; ROBERT D. BENFORD

1994-01-01

256

Preferential flow penetration in a network of identical channels  

NASA Astrophysics Data System (ADS)

It is intuitive to expect a fluid to evenly penetrate two identical daughter channels supplied by the same source when these channels experience the same back pressure. In this work, we show that this might not be the case. We consider the displacement of one fluid by another in a network composed of two identical channels that linearly vary in radius. When surface tension is important, this simple shape variation can cause the fluid to primarily enter only one of the two branches, i.e., we find that the even or uniform fluid penetration into the network is not always stable. Displacement flows in small channels exhibit an interplay between viscous forces and capillary forces. We analyze the dynamics of our system, which features a hydrodynamic instability that is governed by the viscosities of the fluids, their wetting properties, the flow penetration speed, and the gradient characterizing the channel shape.

Al-Housseiny, Talal T.; Hernandez, Jesus; Stone, Howard A.

2014-04-01

257

A Varying-e Brane World Cosmology  

NASA Astrophysics Data System (ADS)

We study a varying electric charge brane world cosmology in the RS2 model obtained from a varying-speed-of-light brane world cosmology by redefining the system of units. We elaborate conditions under which the flatness problem and the cosmological constant problem can be resolved by such cosmological model.

Youm, Donam

258

Novel shock absorber features varying yield strengths  

NASA Technical Reports Server (NTRS)

A shock absorbent webbing of partially drawn synthetic strands is arranged in sections of varying density related to the varying mass of the human body. This is contoured to protect the body at points of contact, when subjected to large acceleration or deceleration forces.

Geier, D. J.

1964-01-01

259

New varying speed of light theories  

Microsoft Academic Search

We review recent work on the possibility of a varying speed of light (VSL). We start by discussing the physical meaning of a varying-c, dispelling the myth that the constancy of c is a matter of logical consistency. We then summarize the main VSL mechanisms proposed so far: hard breaking of Lorentz invariance; bimetric theories (where the speeds of gravity

João Magueijo

2003-01-01

260

Statistical Methods with Varying Coefficient Models  

PubMed Central

The varying coefficient models are very important tool to explore the dynamic pattern in many scientific areas, such as economics, finance, politics, epidemiology, medical science, ecology and so on. They are natural extensions of classical parametric models with good interpretability and are becoming more and more popular in data analysis. Thanks to their flexibility and interpretability, in the past ten years, the varying coefficient models have experienced deep and exciting developments on methodological, theoretical and applied sides. This paper gives a selective overview on the major methodological and theoretical developments on the varying coefficient models.

Fan, Jianqing; Zhang, Wenyang

2008-01-01

261

Ego identity, egocentrism, and formal operations.  

PubMed

This study examined the relationship between ego identity and formal operations and egocentrism in an adolescent population. Results indicated significant positive correlations between ego identity and formal operations and between ego identity and grade in school. Multiple regression analysis revealed that grade in school explained 21 percent of the variance while formal operational thinking, egocentrism, and sex accounted for only an additional 2 percent of the variance. PMID:3739842

Protinsky, H; Wilkerson, J

1986-01-01

262

The Bedrosian identity for H p functions  

Microsoft Academic Search

We establish a necessary and sufficient condition for f?Hp(R), g?Hq(R) with p?1+q?1?1 to satisfy the Bedrosian identity H(fg)=fHg, where H denotes the Hilbert transform. As applications, we prove the Bedrosian theorem for this identity, and give a characterization of f satisfying the identity when g is a finite linear combination of complex sinusoids. We also show that if f is

Lihua Yang; Haizhang Zhang

2008-01-01

263

Preventing and responding to medical identity theft.  

PubMed

Medical identity theft is a crime with two victims: patients and providers. It is easy to commit and lucrative because healthcare record keeping and business interactions are complex and mainly electronic. Patients whose identity has been stolen are vulnerable to both medical error and financial loss. Providers may suffer both reputation loss and financial loss. There are steps to help prevent and to respond appropriately to medical identity theft. PMID:20200908

Amori, Geraldine

2008-01-01

264

Identity-expression interaction in face perception: sex, visual field, and psychophysical factors.  

PubMed

We investigated the psychophysical factors underlying the identity-emotion interaction in face perception. Visual field and sex were also taken into account. Participants had to judge whether a probe face, presented in either the left or the right visual field, and a central target face belonging to same person while emotional expression varied (Experiment 1) or to judge whether probe and target faces expressed the same emotion while identity was manipulated (Experiment 2). For accuracy we replicated the mutual facilitation effect between identity and emotion; no sex or hemispheric differences were found. Processing speed measurements, however, showed a lesser degree of interference in women than in men, especially for matching identity when faces expressed different emotions after a left visual presentation probe face. Psychophysical indices can be used to determine whether these effects are perceptual (A') or instead arise at a post-perceptual decision-making stage (B"). The influence of identity on the processing of facial emotion seems to be due to perceptual factors, whereas the influence of emotion changes on identity processing seems to be related to decisional factors. In addition, men seem to be more "conservative" after a LVF/RH probe-face presentation when processing identity. Women seem to benefit from better abilities to extract facial invariant aspects relative to identity. PMID:23163487

Godard, Ornella; Baudouin, Jean-Yves; Bonnet, Philippe; Fiori, Nicole

2013-01-01

265

The Bedrosian identity for Hp functions  

NASA Astrophysics Data System (ADS)

We establish a necessary and sufficient condition for , with p-1+q-1[less-than-or-equals, slant]1 to satisfy the Bedrosian identity H(fg)=fHg, where H denotes the Hilbert transform. As applications, we prove the Bedrosian theorem for this identity, and give a characterization of f satisfying the identity when g is a finite linear combination of complex sinusoids. We also show that if f is of low Fourier frequency then it is necessary for g to have high Fourier frequency in order to satisfy the Bedrosian identity.

Yang, Lihua; Zhang, Haizhang

2008-09-01

266

Identity Theft in Community Mental Health Patients  

PubMed Central

Identity theft is a serious problem in the United States, and persons with enduring mental illnesses may be particularly vulnerable to becoming victims of this crime. Victims of identity theft experience a variety of consequences that include financial loss and serious emotional distress. Little is known about the impact of identity theft on individuals with mental illnesses. The two cases from a community mental health center presented in this article demonstrate many of the facets that may be associated with an increased risk for becoming the victim of identity theft. A summary of preventive steps as well as steps involved in resolving the crime once one has become a victim are presented.

Klopp, Jonathon; Konrad, Shane; Yanofski, Jason

2007-01-01

267

Disparity Analysis of Time-Varying Imagery.  

National Technical Information Service (NTIS)

An interactive program (called program DIDA) was developed to perform disparity analysis of time-varying imagery. The program consists of four sections: (1) image operations; (2) interesting point selection; (3) interesting point matching, and (4) image d...

F. D. Cooper

1981-01-01

268

Social identity framing: Leader communication for social change  

NASA Astrophysics Data System (ADS)

Social identity framing (SIF) delineates a process of intergroup communication that leaders may engage in to promote a vision of social change. As a step towards social change, social identity may need to be altered to accommodate a new view of the group, its collective goals, and its place alongside other groups. Thus, social identity content may be deconstructed and reconstructed by the leader en route to change. SIF suggests that this may be achieved through a series of 16 communication tactics, which are largely derived from previous research (Seyranian & Bligh, 2008). This research used an experimental design to test the effectiveness of three SIF communication tactics - inclusion, similarity to followers, and positive social identity - on a number of follower outcomes. Students ( N=246) were randomly assigned to read one of eight possible speeches promoting renewable energy on campus that was ostensibly from a student leader. The speeches were varied to include or exclude the three communication tactics. Following the speech, participants completed a dependent measures questionnaire. Results indicated that similarity to followers and positive social identity did not affect follower outcomes. However, students exposed to inclusion were more likely to indicate that renewable energy was ingroup normative; intend to engage in collective action to bring renewable energy to campus; experience positive emotional reactions towards change; feel more confident about the possibility of change; and to view the leader more positively. The combination of inclusion and positive social identity increased perceptions of charismatic leadership. Perceived leader prototypicality and cognitive elaboration of the leader's message resulted in more favorable attitudes towards renewable energy. Perceived leader prototypicality was also directly related to social identification, environmental values, ingroup injunctive norms, and self-stereotypes. Overall, these results support SIF theory by providing evidence that communication that implicates social identity (i.e., inclusion) is an important aspect of the leader-follower influence process and that it can be used to bring about changes such as promoting environmental conservation policies. Avenues of future research on SIF are discussed.

Seyranian, Viviane

269

Assessment of identity development and identity diffusion in adolescence - Theoretical basis and psychometric properties of the self-report questionnaire AIDA  

PubMed Central

Background In the continuing revision of Diagnostic and Statistical Manual (DSM-V) “identity” is integrated as a central diagnostic criterion for personality disorders (self-related personality functioning). According to Kernberg, identity diffusion is one of the core elements of borderline personality organization. As there is no elaborated self-rating inventory to assess identity development in healthy and disturbed adolescents, we developed the AIDA (Assessment of Identity Development in Adolescence) questionnaire to assess this complex dimension, varying from “Identity Integration” to “Identity Diffusion”, in a broad and substructured way and evaluated its psychometric properties in a mixed school and clinical sample. Methods Test construction was deductive, referring to psychodynamic as well as social-cognitive theories, and led to a special item pool, with consideration for clarity and ease of comprehension. Participants were 305 students aged 12–18 attending a public school and 52 adolescent psychiatric inpatients and outpatients with diagnoses of personality disorders (N?=?20) or other mental disorders (N?=?32). Convergent validity was evaluated by covariations with personality development (JTCI 12–18 R scales), criterion validity by differences in identity development (AIDA scales) between patients and controls. Results AIDA showed excellent total score (Diffusion: ??=?.94), scale (Discontinuity: ??=?.86; Incoherence: ??=?.92) and subscale (??=?.73-.86) reliabilities. High levels of Discontinuity and Incoherence were associated with low levels in Self Directedness, an indicator of maladaptive personality functioning. Both AIDA scales were significantly different between PD-patients and controls with remarkable effect sizes (d) of 2.17 and 1.94 standard deviations. Conclusion AIDA is a reliable and valid instrument to assess normal and disturbed identity in adolescents. Studies for further validation and for obtaining population norms are in progress and may provide insight in the relevant aspects of identity development in differentiating specific psychopathology and therapeutic focus and outcome.

2012-01-01

270

Do different types of social identity moderate the association between perceived descriptive norms and drinking among college students?  

PubMed

Perceived descriptive norms are one of the strongest predictors of college drinking. Social Identity Theory posits that much of our identity is based on groups with which we affiliate. Prior research suggests that there is an association between perceived descriptive norms and drinking among those who identify more strongly with the normative referent group. However, no studies to date have examined how different facets of social identity affect the relationship between perceived descriptive norms and drinking. The purpose of this study was to examine whether the interaction between perceived descriptive norms and social identity on drinking varied as a function of different dimensions of social identity among college students. Participants were 1095 college students from a large, public, southern university who completed an online survey about drinking behaviors and related attitudes. Drinks per week was examined as a function of norms, the Importance, Commitment, Deference, and Superiority subscales of the Measure of Identification with Groups, as well as the two-way interactions between each dimension of social identity and norms. Results indicated that norms were associated with drinking, but that this relationship varied as a function of identity dimension. The association between norms and drinking was stronger among those who viewed the university's student body as part of their own identity and were more committed to their fellow students, but weaker among those who reported greater deference to student leaders. This research suggests the importance of examining multiple dimensions of social identity in considering social influences on drinking. PMID:24836160

Rinker, Dipali Venkataraman; Neighbors, Clayton

2014-09-01

271

Sacred communities: religion and national identities  

Microsoft Academic Search

This article aims to review the relationships between religion and national identity as revealed through some 23 articles in National Identities published over the last 10 years. In addition I will also try to lay out a broad perspective on religion and nation from which to develop this review. Specifically the message is that religion has not gone away and

James Dingley

2011-01-01

272

The Ontogeny of Career Identities in Adolescence  

ERIC Educational Resources Information Center

Exploration and identity formation are primary developmental tasks during adolescence and the transition to adulthood. Yet little is known about occupational identity formation and growth during this period of life. In this chapter, the authors describe their ongoing research on this topic. First, they present their findings on the ontogeny of the…

Malanchuk, Oksana; Messersmith, Emily E.; Eccles, Jacquelynne S.

2010-01-01

273

Grounding Social Identity for Professional Practice  

ERIC Educational Resources Information Center

This article describes sociocultural theory as a way to ground social identity for clinical and research practices in speech-language pathology. The purpose is to (1) outline the fundamentals of the theory and (2) link the focal unit of analysis from the theory, mediated action, to social identity to (3) support the clinical utility of mediated…

Hagstrom, Fran; Wertsch, James V.

2004-01-01

274

Iranian Validation of the Identity Style Inventory  

ERIC Educational Resources Information Center

The purpose of this study was to validate the Iranian version of the Identity Style Inventory (ISI). Participants were 376 (42% males) university students. Confirmatory factor analyses revealed a clear three-factor structure of identity style and a mono-factor structure of commitment in the overall sample as well as in gender subgroups. Convergent…

Crocetti, Elisabetta; Shokri, Omid

2010-01-01

275

Professional Identity of Evaluators in Israel  

ERIC Educational Resources Information Center

Professional identity is a precondition for the establishment of a profession. This examines the professional identity of program evaluators in Israel. The field of evaluation in Israel has developed differently than in most Western countries--from the ground and with minimal governmental interference--and thus it is an interesting case study. In…

Levin-Rozalis, Miri; Shochot-Reich, Efrat

2008-01-01

276

Managing product identity through style recurrence  

Microsoft Academic Search

The development of new products has a crucial part to play in a corporation, and consistent formal style can add value to new products. In other words, it is the uniqueness and consistent style of a corporation, which creates its distinct identity. Most of the previous researches on corporate identity focused on the issues of conceptual planning of design strategy

Kuohsiang Chen; Cheng-Chen Shao

2005-01-01

277

Sexual Identity and Self-Concept  

Microsoft Academic Search

This study investigated the relationship among gender, social sex roles, and sexual orientation as components of sexual identity, and the relationship of these components to the overall self-concept. It was found that each component was individually important in the relationship of sexual identity of self-concept. The interaction between sex ands sexual orientation suggested that different combinations of the female, male,

Paul C. Larson

1981-01-01

278

Multiple-target tracking and identity management  

Microsoft Academic Search

This paper involves the development of an algorithm which can simultaneously track and manage identities of multiple targets in a sensor network, for the purpose of air traffic control. We propose a logical integration of joint probabilistic data association (JPDA) (Bar-Shalom and Fortmann, 1988), used for associating measurements with targets, and the identity management (IM) (Shin et al., 2003) algorithm

Inseok Hwang; H. Balakrishnan; K. Roy; Jaewon Shin; L. Guibas; C. Tomlin

2003-01-01

279

Music and Identity Formation in Older Adults  

ERIC Educational Resources Information Center

For many individuals, engagement with the arts and music in later life plays a significant role in identity formation. Research indicates that music engagement facilitates successful aging. While participants may or may not establish identities as musicians, musical activities provide interactions and opportunities that facilitate their…

Dabback, William M.

2010-01-01

280

Gender identity disorder and courtship disorder  

Microsoft Academic Search

A hypothetical connection between gender identity disorder and courtship disorder was investigated in 274 heterosexual male patients of the following types: nontransvestic fetishists for female attire; transvestic fetishists; patients with gender identity disorder of adolescence and adulthood, nontranssexual type; and transsexuals. Of these patients, 53 had also demonstrated one or more of the putative expressions of courtship disorder. The proportion

Kurt Freund; Robin J. Watson

1993-01-01

281

Identity Development and Mentoring in Doctoral Education  

ERIC Educational Resources Information Center

In this essay, Leigh Hall and Leslie Burns use theories of identity to understand mentoring relationships between faculty members and doctoral students who are being prepared as educational researchers. They suggest that becoming a professional researcher requires students to negotiate new identities and reconceptualize themselves both as people…

Hall, Leigh A.; Burns, Leslie D.

2009-01-01

282

Identity as a Source of Moral Motivation  

ERIC Educational Resources Information Center

Theory and research regarding moral motivation has focused for decades on the roles of moral reasoning and, to some extent, moral emotion. Recently, however, several models of morality have positioned identity as an additional important source of moral motivation. An individual has a moral identity to the extent that he or she has constructed his…

Hardy, Sam A.; Carlo, Gustavo

2005-01-01

283

Identity, Language Learning, and Social Change  

ERIC Educational Resources Information Center

In this review article on identity, language learning, and social change, we argue that contemporary poststructuralist theories of language, identity, and power offer new perspectives on language learning and teaching, and have been of considerable interest in our field. We first review poststructuralist theories of language, subjectivity, and…

Norton, Bonny; Toohey, Kelleen

2011-01-01

284

Researching work identities in a European context  

Microsoft Academic Search

The contributions in this CDI special issue present research findings that have been generated in the course of the research project, Vocational Identity, Flexibility and Mobility in the European Labour Market, funded under the 5th EU Framework Programme. Investigating identity formation processes at work, the guiding research question focused on what individuals identify with in their work context when they

Simone Kirpal

2004-01-01

285

Measuring Identity Processes in Family Relational Empowerment  

ERIC Educational Resources Information Center

This paper outlines a procedure for measuring personal identity that uses self-characterisations to elicit and integrate ideographic data for fixed construct repertory grid nomothetic applications. There is a focus on how family members view their personal identities when they are recovering from the impacts of having a "loved one" with a mental…

Buckley-Walker, Kellie; Crowe, Trevor Patrick; Caputi, Peter

2013-01-01

286

Conceptualizing Native Identity with a Multidimensional Model  

ERIC Educational Resources Information Center

This study reports on a Native Identity Scale (NIS) adapted from an African American identity scale (Sellers et al., 1997). American Indian (AIs) and First Nations Canadian participants (N = 199) completed the NIS at powwows in the Upper Midwest. The majority of respondents were Ojibwe, but other tribal groups were represented. A principal…

Gonzalez, John; Bennett, Russell

2011-01-01

287

Improving Measurement of Workplace Sexual Identity Management  

ERIC Educational Resources Information Center

The purpose of this study was to advance measurement of sexual identity management for lesbian, gay, and bisexual workers. Psychometric properties of a revised version of the Workplace Sexual Identity Management Measure (WSIMM; Anderson, Croteau, Chung, & DiStefano, 2001) were examined on a sample of 64 predominantly White K-12 teachers.…

Lance, Teresa S.; Anderson, Mary Z.; Croteau, James M.

2010-01-01

288

Implicit and Explicit Exercise and Sedentary Identity  

ERIC Educational Resources Information Center

We examined the relationship between implicit and explicit "exerciser" and "sedentary" self-identity when activated by stereotypes. Undergraduate participants (N = 141) wrote essays about university students who either liked to exercise or engage in sedentary activities. This was followed by an implicit identity task and an explicit measure of…

Berry, Tanya R.; Strachan, Shaelyn M.

2012-01-01

289

Transformations at work: identity and learning  

Microsoft Academic Search

This paper examines how identity and learning are constituted and transformed at work. Its central concern is how individuals engage agentically in and learn through workplace practices, and in ways that transform work. Drawing upon recent research into work and participation in workplaces, the negotiated and contested relationship between workplace practices and individuals' identity and intentionality, and learning is illuminated

Stephen Billett; Margaret Somerville

2004-01-01

290

Stress vs. Identity Among Black Males.  

ERIC Educational Resources Information Center

A recurrent theme in the literature on black identity is self-hate. Black people are portrayed as suffering from one of the following four conditions; (1) low self-esteem; (2) impaired identity formation; (3) pathological environmental adaptation; and/or (4) low intellectual functioning. However, research is emerging which questions many of these…

Stokes, DeVon Renard

291

Young Women Online: Collaboratively Constructing Identities  

ERIC Educational Resources Information Center

In this paper I examine how young women construct their identities with others in online communities. I argue that the proliferation of social networking and its popularity among young people means that performed identities are increasingly collaboratively constructed, with the individual having less control over their public image than was…

Paechter, Carrie

2013-01-01

292

Exploring Relationships between Teacher Identities and Disciplinarity  

ERIC Educational Resources Information Center

The relationships between discipline specialization, teacher identity, and pedagogy can be seen as the crux of practice in the music classroom--impacting on all the actions of the teacher, both within and outside the classroom. Crucially, the impact of music teacher identity on the nature of music teaching and learning is one that has the…

Ballantyne, Julie; Grootenboer, Peter

2012-01-01

293

Quadrature identities and the schottky double  

Microsoft Academic Search

By using Riemann surface theory we obtain results on quadrature domains and identities for analytic functions, e.g., existence of multiply-connected quadrature domains, descriptions of their algebraic boundaries and results on the multitude of quadrature domains associated to a fixed quadrature identity. The main idea is to characterize quadrature domains in terms of meromorphic functions and differentials on Riemann surfaces conformally

Björn Gustafsson

1983-01-01

294

Predictive Validity of the Vocational Identity Scale.  

ERIC Educational Resources Information Center

To establish that measures of vocational identity are sensitive to variations in development, researchers need to demonstrate that different patterns of scores on these measures predict subsequent coping with later tasks of vocational development. This study investigated the ability of the Vocational Identity Scale (VIS) to predict coping with a…

Savickas, Mark L.

295

Autobiographic Notes on the Identity Crisis  

ERIC Educational Resources Information Center

The author describes his training conducted by Anna Freud and the emergence of his concepts of identity and identity crisis. He recapitulates his conceptual ancestry, insofar as it originates in psychoanalysis, in order to indicate that psychoanalysis represents a very special admixture of laboratory conditions, methodological climate, and…

Erikson, Erik H.

1970-01-01

296

Identity theft prevention in the healthcare setting.  

PubMed

How a healthcare security department has undertaken a program to prevent employees, patients, and visitors from becoming victims of Identity Theft as well as providing help for victims of this crime in mitigating their losses. An Identity Theft affidavit for ID theft victims is illustrated. PMID:16535940

Warren, Bryan

2005-01-01

297

Constructing Facial Identity Surfaces for Recognition  

Microsoft Academic Search

We present a novel approach to face recognition by constructing facial identity structures across views and over time, referred to as identity surfaces, in a Kernel Discriminant Analysis (KDA) feature space. This approach is aimed at addressing three challenging problems in face recognition: modelling faces across multiple views, extracting non-linear discriminatory features, and recognising faces over time. First, a multi-view

Yongmin Li; Shaogang Gong; Heather M. Liddell

2003-01-01

298

Migration, Culture and Identity in Portugal  

ERIC Educational Resources Information Center

Culture and identity are dynamic realities. Therefore, the essentialist view of culture and identity does not explain the process of integration of minorities in a context of acculturation, and leads to policies of "ghettoisation". This text focuses on what we describe as "cultural transfusion". By means of this process, we analyse two tendencies…

Vieira, Ricardo; Trindade, Jose

2008-01-01

299

A New Transcendence Model of Identity Construction  

ERIC Educational Resources Information Center

What does it mean for college men to be authentic? How can we support their efforts to transcend their own immediate needs? And what roles do trusted others play in one's construction of identity? This article describes a preliminary new theoretical model--a Transcendence Model of Identity Construction--based on original research studying…

Elliott, Christopher L. Wilcox

2012-01-01

300

Foregrounding Preservice Teacher Identity in Teacher Education  

ERIC Educational Resources Information Center

The article examines, through comparative case study method, how secondary-language-arts preservice student teachers' identities were constructed by spacetime configurations and what those identities meant to the individuals in the study. It reflects on the findings from two of the preservice secondary arts teachers for the study in two…

Miller, S. J.

2006-01-01

301

Formulating Environmental Constructs that Affect Students' Identity.  

ERIC Educational Resources Information Center

Provides additional evidence for the construct validity of the Erwin Identity Scale (EIS). Provides information about interaction between identity development and college environment as perceived by students. Impact of academic environment and interpersonal campus environment were reflected by high or low scores on the EIS. (RC)

Erwin, T. Dary; Delworth, Ursula

1982-01-01

302

Pell Identities via a Quadratic Field  

ERIC Educational Resources Information Center

In this article, we derive a number of identities involving both Pell numbers and binomial coefficients. We also consider briefly the potential for obtaining Pell identities involving trinomial coefficients and beyond. A key point is the simplicity of the derivations, and indeed this work can lead on to a number of interesting explorations for…

Griffiths, Martin

2013-01-01

303

Mutual selection in time-varying networks  

NASA Astrophysics Data System (ADS)

Time-varying networks play an important role in the investigation of the stochastic processes that occur on complex networks. The ability to formulate the development of the network topology on the same time scale as the evolution of the random process is important for a variety of applications, including the spreading of diseases. Past contributions have investigated random processes on time-varying networks with a purely random attachment mechanism. The possibility of extending these findings towards a time-varying network that is driven by mutual attractiveness is explored in this paper. Mutual attractiveness models are characterized by a linking function that describes the probability of the existence of an edge, which depends mutually on the attractiveness of the nodes on both ends of that edge. This class of attachment mechanisms has been considered before in the fitness-based complex networks literature but not on time-varying networks. Also, the impact of mutual selection is investigated alongside opinion formation and epidemic outbreaks. We find closed-form solutions for the quantities of interest using a factorizable linking function. The voter model exhibits an unanticipated behavior as the network never reaches consensus in the case of mutual selection but stays forever in its initial macroscopic configuration, which is a further piece of evidence that time-varying networks differ markedly from their static counterpart with respect to random processes that take place on them. We also find that epidemic outbreaks are accelerated by uncorrelated mutual selection compared to previously considered random attachment.

Hoppe, K.; Rodgers, G. J.

2013-10-01

304

Continuous identity authentication using multimodal physiological sensors  

NASA Astrophysics Data System (ADS)

This paper on multi-modal continuous identity authentication contains four main sections. The first section describes the security issue we are addressing with the use of continuous identity authentication and describes the research our laboratory has been doing with different types of passive physiological sensors and how the multi-modal sensor data can be applied to continuous identity authentication. The second section describes a pilot study measuring temperature, GSR, eye movement, blood flow and click pressure of thirteen subjects performing a computer task. The third section gives preliminary results that show continuous authentication of identity above 80 percent was possible using discriminant analysis with a limited set of all of the measures for all but two subjects. The fourth section discusses the results and the potential of continuous identity authentication.

Crosby, Martha E.; Ikehara, Curtis S.

2004-08-01

305

The Pohozaev Identity for the Fractional Laplacian  

NASA Astrophysics Data System (ADS)

In this paper we prove the Pohozaev identity for the semilinear Dirichlet problem {(-?)^s u =f(u)} in {?, uequiv0} in {{R}^nbackslash?} . Here, {sin(0,1)} , (-?) s is the fractional Laplacian in {{R}^n} , and ? is a bounded C 1,1 domain. To establish the identity we use, among other things, that if u is a bounded solution then {u/?^s|_{?}} is C ? up to the boundary ??, where ?(x) = dist(x,??). In the fractional Pohozaev identity, the function {u/?^s|_{partial?}} plays the role that ?u/?? plays in the classical one. Surprisingly, from a nonlocal problem we obtain an identity with a boundary term (an integral over ??) which is completely local. As an application of our identity, we deduce the nonexistence of nontrivial solutions in star-shaped domains for supercritical nonlinearities.

Ros-Oton, Xavier; Serra, Joaquim

2014-04-01

306

Looking through "Northern Exposure" at Jewish American Identity and the Communication Theory of Identity.  

ERIC Educational Resources Information Center

Explores Jewish American identity from a communication theory of identity perspective. Analyzes six episodes of the television program "Northern Exposure" for their representation of Jewish American identity, and explains how the episodes were then shown to 26 Jewish Americans. Notes that the study focused on a communal representation of this…

Hecht, Michael L.; Faulkner, Sandra L.; Meyer, C. R.; Niles, TA; Golden, Doug; Cutler, Melanie

2002-01-01

307

The Identity Game: Constructing and Enabling Multicultural Identities in a Finland-Swedish School Setting  

ERIC Educational Resources Information Center

This study, building on previous studies stressing the bond between positive sense of ethnic identity and school belonging, puts at its center the very process of ethnic identity construction. Thus, identity is viewed as co-constructed, within a social-constructionist perspective on learning. The study is two-folded. It starts out by describing…

Forsman, Liselott; Hummelstedt-Djedou, Ida

2014-01-01

308

Social Support, Ethnic Identity, and Sexual Identity of Lesbians and Gay Men  

Microsoft Academic Search

Social support, sexual identity development, and ethnic identity development play key roles in individuals’ health and well-being. This study explores social support and identity variables in samples of ethnic minority (N = 297) and White (N = 294) lesbians and gay men. Ethnic minority participants as well as white participants reported generally high levels of satisfaction with social support, strong

Susanna M. Gallor; Ruth E. Fassinger

2010-01-01

309

Social representations of the Holocaust and Jewish Israeli identity construction: insights from identity process theory  

Microsoft Academic Search

This study explores how a group of young Israeli Jews understood and defined their ethno-national identities, focusing upon the role of social representations of the Holocaust in the construction of Jewish Israeli identity. Eleven individuals were interviewed using a semi-structured interview schedule. Transcripts were subjected to interpretative phenomenological analysis. The analysis was informed by identity process theory and social representations

Rusi Jaspal; Maya A. Yampolsky

2011-01-01

310

Ego Identity and Spiritual Identity in Religiously Observant Adolescents in Israel  

ERIC Educational Resources Information Center

This study examined the relationship between spiritual identity and ego identity among religiously observant adolescents in Israel. Seventy-eight religious tenth graders studying in yeshivot (boys) and ulpanot (girls) were tested. The Ego Identity Scale for Adolescents and a Questionnaire of Religious Beliefs were administered to them. Throughout…

Fisherman, Shraga

2004-01-01

311

Relations of Work Identity, Family Identity, Situational Demands, and Sex with Employee Work Hours  

ERIC Educational Resources Information Center

This study examined relations of multiple indicators of work identity and family identity with the number of weekly hours worked by 193 married business professionals. We found that men generally worked long hours regardless of the situational demands to work long hours and the strength of their work and family identities. Women's work hours, on…

Greenhaus, Jeffrey H.; Peng, Ann C.; Allen, Tammy D.

2012-01-01

312

Effect modification by time-varying covariates.  

PubMed

Marginal structural models (MSMs) allow estimation of effect modification by baseline covariates, but they are less useful for estimating effect modification by evolving time-varying covariates. Rather, structural nested models (SNMs) were specifically designed to estimate effect modification by time-varying covariates. In their paper, Petersen et al. (Am J Epidemiol 2007;166:985-993) describe history-adjusted MSMs as a generalized form of MSM and argue that history-adjusted MSMs allow a researcher to easily estimate effect modification by time-varying covariates. However, history-adjusted MSMs can result in logically incompatible parameter estimates and hence in contradictory substantive conclusions. Here the authors propose a more restrictive definition of history-adjusted MSMs than the one provided by Petersen et al. and compare the advantages and disadvantages of using history-adjusted MSMs, as opposed to SNMs, to examine effect modification by time-dependent covariates. PMID:17875581

Robins, James M; Hernán, Miguel A; Rotnitzky, Andrea

2007-11-01

313

Longitudinal Trajectories of Ethnic Identity among Urban Black and Latino Adolescents  

ERIC Educational Resources Information Center

The current study modeled developmental trajectories of ethnic identity exploration and affirmation and belonging from middle to late adolescence (ages 15-18) and examined how these trajectories varied according to ethnicity, gender, immigrant status, and perceived level of discrimination. The sample consisted of 135 urban low-income Black and…

Pahl, Kerstin; Way, Niobe

2006-01-01

314

Stoichiometry of nutrient recycling by vertebrates in a tropical stream: linking species identity and ecosystem processes  

Microsoft Academic Search

Ecological stoichiometry offers a framework for predicting how animal species vary in recycling nutrients, thus providing a mechanism for how animal species identity mediates ecosystem processes. Here we show that variation in the rates and ratios at which 28 vertebrate species (fish, amphibians) recycled nitrogen (N) and phosphorus (P) in a tropical stream supports stoichiometry theory. Mass-specific P excretion rate

Michael J. Vanni; Alexander S. Flecker; James M. Hood; Jenifer L. Headworth

2002-01-01

315

How Dresses Can Make You Mentally Ill: Examining Gender Identity Disorder in Children  

Microsoft Academic Search

This paper examines the diagnostic category of Gender Identity Disorder in Children (GIDC) and its evolution. It also critiques the continued use of GIDC on conceptual, psychometric, and ethical grounds. Gender atypicality is a social construction that varies over time according to culture and social class and therefore should not be pathologized.

Susan J. Langer; James I. Martin

2004-01-01

316

Clinician Judgment in the Diagnosis of Gender Identity Disorder in Children  

Microsoft Academic Search

Clinician judgment methodology was used to explore the influence of gender nonconformity and gender dysphoria on the diagnosis of children with Gender Identity Disorder (GID). A convenience sample of 73 licensed psychologists randomly received a vignette to diagnose. Vignettes varied across sex of child, gender conforming behavior, and gender dysphoria (including all possible permutations). Eight percent of respondents given a

Randall D. Ehrbar; Marjorie C. Witty; Hans G. Ehrbar; Walter O. Bockting

2008-01-01

317

The Effect of Profile Elevation on the Relationship between Interest Differentiation and Vocational Identity  

ERIC Educational Resources Information Center

This study examines the varying relationships between vocational identity and differentiation of vocational interests while taking into account levels of profile elevation as the moderator. The participants were 130 high school students who attended a vocational guidance programme at a youth counselling centre in Korea. The relationship between…

Im, Seongah

2011-01-01

318

Identity Negotiation: An Intergenerational Examination of Lesbian and Gay Band Directors  

ERIC Educational Resources Information Center

The purpose of this qualitative study was to examine the experiences of lesbian and gay band directors at varying stages of career development to discern how they have negotiated identity within their personal and professional lives. Ten band directors (8 males and 2 females) residing in Texas (n = 8), Florida (n = 1), and Illinois (n = 1)…

Taylor, Donald M.

2011-01-01

319

Nation and Ethnic Identity Self-Definitions in a Canadian Language Class  

Microsoft Academic Search

An ethnographic study of a Canadian, undergraduate, advanced Hebrew course composed of heritage language learners of diverse backgrounds examined the fluctuating notion of nation and shifting national membership affiliations. Data collection techniques included participant observation and in-depth, semistructured, focus group and individual interviews of 10 students. The professor found varied constructions of national identity mediated by the influence of the

Avital Feuer

2008-01-01

320

Different Places, Different Specialisms: Similar Questions of Doctoral Identities under Construction  

ERIC Educational Resources Information Center

We share a common interest in researching the experiences of doctoral students. Over time, as we conducted our independent studies, we became increasingly interested in the varied ways in which doctoral students constructed their identities in relation to their past experiences, present and shifting intentions and affect, personal and social…

McAlpine, Lynn; Lucas, Lisa

2011-01-01

321

Singularities of varying light speed cosmologies  

NASA Astrophysics Data System (ADS)

We study the possible singularities of isotropic cosmological models that have a varying speed of light as well as a varying gravitational constant. The field equations typically reduce to two dimensional systems which are then analyzed both by dynamical systems techniques in phase space and by applying the method of asymptotic splittings. In the general case we find initially expanding closed models which recollapse to a future singularity and open universes that are eternally expanding towards the future. The precise nature of the singularities is also discussed.

Miritzis, John; Cotsakis, Spiros

2007-05-01

322

Solar mass-varying neutrino oscillations.  

PubMed

We propose that the solar neutrino deficit may be due to oscillations of mass-varying neutrinos (MaVaNs). This scenario elucidates solar neutrino data beautifully while remaining comfortably compatible with atmospheric neutrino and K2K data and with reactor antineutrino data at short and long baselines (from CHOOZ and KamLAND). We find that the survival probability of solar MaVaNs is independent of how the suppression of neutrino mass caused by the acceleron-matter couplings varies with density. Measurements of MeV and lower energy solar neutrinos will provide a rigorous test of the idea. PMID:16384133

Barger, V; Huber, Patrick; Marfatia, Danny

2005-11-18

323

Multiple pathways to identification: Exploring the multidimensionality of academic identity formation in ethnic minority males.  

PubMed

Empirical trends denote the academic underachievement of ethnic minority males across various academic domains. Identity-based explanations for this persistent phenomenon describe ethnic minority males as disidentified with academics, alienated, and oppositional. The present work interrogates these theoretical explanations and empirically substantiates a multidimensional lens for discussing academic identity formation within 330 African American and Latino early-adolescent males. Both hierarchical and iterative person-centered methods were utilized and reveal 5 distinct profiles derived from 6 dimensions of academic identity. These profiles predict self-reported classroom grades, mastery orientation, and self-handicapping in meaningful and varied ways. The results demonstrate multiple pathways to motivation and achievement, challenging previous oversimplified stereotypes of marginalized males. This exploratory study triangulates unique interpersonal and intrapersonal attributes for promoting healthy identity development and academic achievement among ethnic minority adolescent males. (PsycINFO Database Record (c) 2014 APA, all rights reserved). PMID:24447039

Matthews, Jamaal S

2014-04-01

324

Two barriers to realizing the benefits of biometrics: a chain perspective on biometrics and identity fraud as biometrics' real challenge  

NASA Astrophysics Data System (ADS)

Along at least twelve dimensions biometric systems might vary. We need to exploit this variety to manoeuvre biometrics into place to be able to realise its social potential. Subsequently, two perspectives on biometrics are proposed revealing that biometrics will probably be ineffective in combating identity fraud, organised crime and terrorism: (1) the value chain perspective explains the first barrier: our strong preference for large scale biometric systems for general compulsory use. These biometric systems cause successful infringements to spread unnoticed. A biometric system will only function adequately if biometrics is indispensable for solving the dominant chain problem. Multi-chain use of biometrics takes it beyond the boundaries of good manageability. (2) the identity fraud perspective exposes the second barrier: our traditional approach to identity verification. We focus on identity documents, neglecting the person and the situation involved. Moreover, western legal cultures have made identity verification procedures known, transparent, uniform and predictable. Thus, we have developed a blind spot to identity fraud. Biometrics provides good potential to better checking persons, but will probably be used to enhance identity documents. Biometrics will only pay off if it confronts the identity fraudster with less predictable verification processes and more risks of his identity fraud being spotted. Standardised large scale applications of biometrics for general compulsory use without countervailing measures will probably produce the reverse. This contribution tentatively presents a few headlines for an overall biometrics strategy that could better resist identity fraud.

Grijpink, Jan

2004-06-01

325

The Varied Uses of Readability Measurement.  

ERIC Educational Resources Information Center

Readability formulas have varied uses. In education they are used to match children's reading ability to the difficulty level of material, select stories and books for classroom use and for individual students' particular needs, select textbooks and other reading materials, aid educational research, and check reading materials of newly literate…

Fry, Edward

326

Time-varying joint distribution through copulas  

Microsoft Academic Search

This paper deals with the analysis of temporal dependence in multivariate time series. The dependence structure between the marginal series is modelled through the use of copulas which, unlike the correlation matrix, give a complete description of the joint distribution. The param- eters of the copula function vary through time following certain evolution equations depending on their previous values and

M. Concepcion Ausin; Hedibert F. Lopes

2010-01-01

327

High explosive detonations in varying oxygen atmospheres  

Microsoft Academic Search

Small spheres of PBX9404 and TNT were detonted in atmospheres of varying oxygen content to study the magnitude of the effects of oxygen on afterburn of high explosive (HE) detonation products (DPs). Each of the fireballs (FBs) formed by the HEDPs was observed by high-speed cameras and radiometers in the visible and near infrared. It was found that afterburn domintes

F. R. Kovar; K. R. Trigger; L. G. Guymon; J. R. Harvey

1982-01-01

328

Double-smoothing for varying coefficient models  

Microsoft Academic Search

Moderation analyses are widely used in biomedical and psychosocial research to investigate differential treatment effects, with moderators frequently identified through testing the significance of the interaction between the predictor and the potential moderator under strong parametric assumptions. Without imposing any parametric forms on how the moderators may affect the relationship between predictors and responses, varying coefficient models address this fundamental

Wan Tang; Guoxin Zuo; Hua He

2011-01-01

329

Extended Boussinesq equations for rapidly varying topography  

Microsoft Academic Search

We developed a new Boussinesq-type model which extends the equations of Madsen and Sørensen [1992. A new form of the Boussinesq equations with improved linear dispersion characteristics. Part 2. A slowly varying bathymetry. Coastal Engineering 18, 183–204.] by including both bottom curvature and squared bottom slope terms. Numerical experiments were conducted for wave reflection from the Booij's [1983. A note

Gunwoo Kim; Changhoon Lee; Kyung-Duck Suh

2009-01-01

330

Face Recognition Under Varying Illumination Using Gradientfaces  

Microsoft Academic Search

In this correspondence, we propose a novel method to extract illumination insensitive features for face recognition under varying lighting called the gradient faces. Theoretical analysis shows gradient faces is an illumination insensitive measure, and robust to different illumination, including uncontrolled, natural lighting. In addition, gradient faces is derived from the image gradient domain such that it can discover underlying inherent

Taiping Zhang; Yuan Yan Tang; Bin Fang; Zhaowei Shang; Xiaoyu Liu

2009-01-01

331

Relaxation Assessment with Varied Structured Milieu (RELAX).  

ERIC Educational Resources Information Center

Describes Relaxation Assessment with Varied Structured Milieu (RELAX), a clinical program designed to assess the degree to which an individual is able to demonstrate self-control for overall general relaxation. The program is designed for use with the Cassel Biosensors biofeedback equipment. (JAC)

Cassel, Russell N.; Cassel, Susie L.

1983-01-01

332

Time-Varying Dynamic Bayesian Networks  

Microsoft Academic Search

Directed graphical models such as Bayesian networks are a favored formalism for modeling the dependency structures in complex multivariate systems such as those encountered in biology and neural science. When a system is undergo- ing dynamic transformation, temporally rewiring networks are needed for cap- turing the dynamic causal influences between covariates. In this paper, we pro- pose time-varying dynamic Bayesian

Le Song; Mladen Kolar; Eric P. Xing

333

The Wildcat Corpus of Native- and Foreign-Accented English: Communicative Efficiency across Conversational Dyads with Varying Language Alignment Profiles  

PubMed Central

This paper describes the development of the Wildcat Corpus of native- and foreign-accented English, a corpus containing scripted and spontaneous speech recordings from 24 native speakers of American English and 52 non-native speakers of English. The core element of this corpus is a set of spontaneous speech recordings, for which a new method of eliciting dialogue-based, laboratory-quality speech recordings was developed (the Diapix task). Dialogues between two native speakers of English, between two non-native speakers of English (with either shared or different L1s), and between one native and one non-native speaker of English are included and analyzed in terms of general measures of communicative efficiency. The overall finding was that pairs of native talkers were most efficient, followed by mixed native/non-native pairs and non-native pairs with shared L1. Non-native pairs with different L1s were least efficient. These results support the hypothesis that successful speech communication depends both on the alignment of talkers to the target language and on the alignment of talkers to one another in terms of native language background.

Van Engen, Kristin J.; Baese-Berk, Melissa; Baker, Rachel E.; Choi, Arim; Kim, Midam; Bradlow, Ann R.

2012-01-01

334

Mutual selection in time-varying networks.  

PubMed

Time-varying networks play an important role in the investigation of the stochastic processes that occur on complex networks. The ability to formulate the development of the network topology on the same time scale as the evolution of the random process is important for a variety of applications, including the spreading of diseases. Past contributions have investigated random processes on time-varying networks with a purely random attachment mechanism. The possibility of extending these findings towards a time-varying network that is driven by mutual attractiveness is explored in this paper. Mutual attractiveness models are characterized by a linking function that describes the probability of the existence of an edge, which depends mutually on the attractiveness of the nodes on both ends of that edge. This class of attachment mechanisms has been considered before in the fitness-based complex networks literature but not on time-varying networks. Also, the impact of mutual selection is investigated alongside opinion formation and epidemic outbreaks. We find closed-form solutions for the quantities of interest using a factorizable linking function. The voter model exhibits an unanticipated behavior as the network never reaches consensus in the case of mutual selection but stays forever in its initial macroscopic configuration, which is a further piece of evidence that time-varying networks differ markedly from their static counterpart with respect to random processes that take place on them. We also find that epidemic outbreaks are accelerated by uncorrelated mutual selection compared to previously considered random attachment. PMID:24229223

Hoppe, K; Rodgers, G J

2013-10-01

335

Medical identity theft: an emerging problem for informatics.  

PubMed

This poster reports a preliminary review of medical identity theft. Financial identity theft has received a great deal of media attention. Medical identity theft is a particular kind of identity theft that has received little attention. There are two main subtypes of medical identity theft. In the first type the stolen medical identity is used to receive medical services, and in the second type the stolen medical identity is used to commit healthcare fraud. PMID:18694064

Gillette, William; Patrick, Timothy B

2007-01-01

336

Feynman identity: A special case. I  

SciTech Connect

There is an identity due to Feynman which relates graphs and closed curves on a lattice and it was used by Feynman in his combinatorial proof of Onsager{close_quote}s closed formula for the partition function of the two-dimensional Ising model. Long ago Sherman considered a special case of this identity and pointed out similarities with the Witt identity of Lie algebra theory. In this paper and following, we revisit this special case and solve some problems related with it. In particular, the weights are computed explicitly using paths and words and a direct connection with the Witt formula is found. {copyright} {ital 1997 American Institute of Physics.}

da Costa, G.A. [Instituto de Fisica Gleb Wataghin-DRCC, Universidade Estadual de Campinas, Unicamp, Caixa Postal 6165, 13083-970-Campinas, SP, (Brasil)] [Instituto de Fisica Gleb Wataghin-DRCC, Universidade Estadual de Campinas, Unicamp, Caixa Postal 6165, 13083-970-Campinas, SP, (Brasil)

1997-02-01

337

Identity status and personal construct systems.  

PubMed

The relationship between identity status and the structural features of an individual's personal construct system or self-theory was investigated. Personal constructs relevant to 10 contemporaneous roles (myself as a friend, student, son/daughter, and so on) were elicited from 75 late adolescents who also completed an identity-status measure. Correlational analyses between identity-status scores and structural features of the self-system revealed a theoretically interpretable pattern of interrelationships. The implications of these findings for future research is considered. PMID:3230176

Berzonsky, M D; Neimeyer, G J

1988-09-01

338

The Bianchi identity and weak gravitational lensing  

NASA Astrophysics Data System (ADS)

We consider the Bianchi identity as a field equation for the distortion of the shapes of images produced by weak gravitational lensing. Using the spin coefficient formalism of Newman and Penrose (1962 J. Math. Phys. 3 566 78), we show that certain complex components of the Weyl and Ricci curvature tensors are directly related to fundamental observables in weak gravitational lensing. In the case of weak gravitational fields, we then show that the Bianchi identity provides a field equation for the Ricci tensor assuming a known Weyl tensor. From the Bianchi identity, we derive the integral equation for weak lensing presented by Miralda-Escude (1996 IAU Symp. vol 173 p 131), thus making the Bianchi identity a first principles equation of weak gravitational lensing. This equation is integrated in the important case of an axially symmetric lens and explicitly demonstrated in the case of a point lens and a singular isothermal sphere (SIS) model.

Kling, Thomas P.; Keith, Brian

2005-07-01

339

40 CFR 720.85 - Chemical identity.  

Code of Federal Regulations, 2013 CFR

...Either an X-ray diffraction pattern (for inorganic substances), a mass spectrum (for most other substances), or an infrared spectrum of the particular chemical substance, or if such data do not resolve uncertainties with respect to the identity...

2013-07-01

340

[Identity from the systems theory viewpoint].  

PubMed

During the last two decades systems theory has changed. The theory of autopoietic (selfreferential) systems was introduced by Maturana and Varela and modified by Luhmann. The concept of identity is discussed in the light of the new theories. PMID:2204907

Reiter, L

1990-01-01

341

40 CFR 720.85 - Chemical identity.  

Code of Federal Regulations, 2010 CFR

...Has the identity of the chemical substance been kept confidential...manufacturing or importing this chemical substance for commercial purposes...or other publications; in libraries; or in State, local, or...manufacturing or importing this chemical substance for a...

2010-07-01

342

40 CFR 720.85 - Chemical identity.  

Code of Federal Regulations, 2010 CFR

...Has the identity of the chemical substance been kept confidential...manufacturing or importing this chemical substance for commercial purposes...or other publications; in libraries; or in State, local, or...manufacturing or importing this chemical substance for a...

2009-07-01

343

21 CFR 610.14 - Identity.  

Code of Federal Regulations, 2011 CFR

...laboratory. Identity may be established either through the physical or chemical characteristics of the product, inspection by macroscopic or microscopic methods, specific cultural tests, or in vitro or in vivo immunological...

2011-04-01

344

The contracted Bianchi identities in Regge calculus  

NASA Astrophysics Data System (ADS)

In this note, we show explicitly how the linearized contracted Bianchi identities at a vertex in four-dimensional Regge calculus are related to a sum of the equations of motion for all the edges meeting at that vertex.

Williams, Ruth M.

2012-05-01

345

Varied line-space gratings and applications  

SciTech Connect

This paper presents a straightforward analytical and numerical method for the design of a specific type of varied line-space grating system. The mathematical development will assume plane or nearly-plane spherical gratings which are illuminated by convergent light, which covers many interesting cases for synchrotron radiation. The gratings discussed will have straight grooves whose spacing varies across the principal plane of the grating. Focal relationships and formulae for the optical grating-pole-to-exist-slit distance and grating radius previously presented by other authors will be derived with a symbolic algebra system. It is intended to provide the optical designer with the tools necessary to design such a system properly. Finally, some possible advantages and disadvantages for application to synchrotron to synchrotron radiation beamlines will be discussed.

McKinney, W.R.

1991-07-15

346

The Thermal Collector With Varied Glass Covers  

NASA Astrophysics Data System (ADS)

The thermal collector with varied glass covers represents an innovation realized in order to build a collector able to reach the desired temperature by collecting the solar radiation from the smallest surface, with the highest efficiency. In the case of the thermal collector with variable cover glasses, the number of the glass plates covering the absorber increases together with the length of the circulation pipe for the working fluid. The thermal collector with varied glass covers compared to the conventional collector better meet user requirements because: for the same temperature increase, has the collecting area smaller; for the same collection area, realizes the highest temperature increase and has the highest efficiency. This works is addressed to researchers in the solar energy and to engineers responsible with air-conditioning systems design or industrial and agricultural products drying.

Luminosu, I.; Pop, N.

2010-08-01

347

Craft Idiocy, Erikson, and Footballing Identities  

Microsoft Academic Search

In our opinion the current talent development strategies and schemes of the England Football Association and clubs resulted in the development of unhealthy personalities and an un-mature sense of self-identity through the high exposure to a single area of competence. In particular, academy players are in danger of developing self-identities that are characterized as foreclosed. In some way this mirrors

John Gray; Remco Polman

348

The types of heterosexual gender identity disorder  

Microsoft Academic Search

The rationale for dividing the clinical spectrum of DSM-III-R male heterosexual gender identity disorder into three types was examined. The DSM-III-R category of fetishism for female attire, was included in the analysis. There were 266 male participants divided into three groups: 172 fetishists for female attire or gender identity patients, 52 androphiles, and 42 gynephiles. A 16 item questionnaire was

Kurt Freund; Robin Watson; Robert Dickey

1991-01-01

349

Cybersecurity through an Identity Management System  

Microsoft Academic Search

Abstract— Cybersecurity is a concern,of growing,importance,as internet usage continues to spread,into new,areas. Strong authentication combined,with accountability is a powerful,measure,towards,indi- viduals’ protection against any type of identity theft. On the other hand, such strong identification raises privacy concerns. In this paper, we argue that authentication, accountability and privacy can be combined into a single, deployable identity management system,which,can,be adopted,to current,citizenship database

Elli Androulaki; Maritza Johnson; Binh Vo; Steven Bellovin

350

Imagined Communities, Identity, and English Language Learning  

Microsoft Academic Search

This chapter introduces the notion of imagined communities as a way to better understand the relationship between second language learning and identity. It is argued that language\\u000a learners’ actual and desired memberships in imagined communities affect their learning trajectories, influencing their agency,\\u000a motivation, investment, and resistance in the learning of English. These influences are exemplified with regard to five identity

Aneta Pavlenko; Bonny Norton

351

On identity, diversity, and educational change  

Microsoft Academic Search

In this article, I discuss two areas of Andy Hargreaves’ scholarship, teachers’ identity and biography and the three periods\\u000a of educational change spanning the 1960s to 1990s, that have influenced my work as a teacher educator and researcher. I describe\\u000a research projects, including self-studies, in which I have examined the influence of teachers’ identities and biographies\\u000a on their beliefs and

Allison Skerrett

2011-01-01

352

Identity Development Among Sexual-Minority Youth  

Microsoft Academic Search

\\u000a \\u000a Sexual identity is the name and meaning individuals assign to themselves based on the most salient sexual aspects of their life – such as\\u000a sexual attractions, fantasies, desires, and behaviors. Sexual identities usually fall within existing social categories, such\\u000a as straight, bisexual, or lesbian\\/gay, and are historically and culturally specific. Youth in today’s cohort have expanded\\u000a the list of sexual

Ritch C. Savin-Williams

353

The Symbolic Interactionist Perspective and Identity Theory  

Microsoft Academic Search

\\u000a Symbolic interactionist perspectives or frames underlie most sociological interest in identity. We focus first on the presentation\\u000a of these perspectives, beginning with the eighteenth-century Scottish moral philosophers and the later work of the philosopher-psychologist\\u000a George Herbert Mead, tracing their influence on current sociological thinking about social psychology and identity. Two important\\u000a variants in symbolic interactionist thinking, “traditional symbolic interactionism” and

Richard T. Serpe; Sheldon Stryker

354

Rational orthogonal bases satisfying the Bedrosian identity  

Microsoft Academic Search

We develop a necessary and sufficient condition for the Bedrosian identity in terms of the boundary values of functions in\\u000a the Hardy spaces. This condition allows us to construct a family of functions such that each of which has non-negative instantaneous\\u000a frequency and is the product of two functions satisfying the Bedrosian identity. We then provide an efficient way to

Lihui Tan; Lixin Shen; Lihua Yang

2010-01-01

355

Cash management in a randomly varying environment  

Microsoft Academic Search

We study a cash management system, in which the distribution of the cash flow Xn in period n=1,2,… depends on the state In of a randomly varying environment. Sufficient conditions are found for the optimality of a simple transfer rule, generalizing and partially improving the well-known results for the classical case with i.i.d. cash flows. These and further structural results

Karl Hinderer; Karl-Heinz Waldmann

2001-01-01

356

ROC graphs with instance-varying costs  

Microsoft Academic Search

Receiver Operating Characteristics (ROC) graphs are a useful technique for organizing classifiers and visual- izing their performance. ROC graphs have been used in cost-sensitive learning because of the ease with which class skew and error cost information can be applied to them to yield cost-sensitive decisions. However, they have been criticized because of their inability to handle instance-varying costs; that

Tom Fawcett

2006-01-01

357

Dark energy from mass varying neutrinos  

NASA Astrophysics Data System (ADS)

We show that mass varying neutrinos (MaVaNs) can behave as a negative pressure fluid which could be the origin of the cosmic acceleration. We derive a model independent relation between the neutrino mass and the equation of state parameter of the neutrino dark energy, which is applicable for general theories of mass varying particles. The neutrino mass depends on the local neutrino density and the observed neutrino mass can exceed the cosmological bound on a constant neutrino mass. We discuss microscopic realizations of the MaVaN acceleration scenario, which involve a sterile neutrino. We consider naturalness constraints for mass varying particles, and find that both eV cut-offs and eV mass particles are needed to avoid fine-tuning. In microscopic realizations of this scenario with a sterile neutrino, these considerations give the sterile neutrino a maximum mass today of order an eV, which could be detectable at MiniBooNE. Because the sterile neutrino was much heavier at earlier times, constraints from big bang nucleosynthesis on additional states are not problematic. We consider regions of high neutrino density and find that the most likely place today to find neutrino masses which are significantly different from the neutrino masses in our solar system is in a supernova. The possibility of different neutrino mass in different regions of the galaxy and the local group could be significant for Z-burst models of ultra-high energy cosmic rays. We also consider the cosmology of and the constraints on the 'acceleron', the scalar field which is responsible for the varying neutrino mass, and briefly discuss neutrino density dependent variations in other constants, such as the fine structure constant.

Fardon, Rob; Nelson, Ann E.; Weiner, Neal

2004-10-01

358

Spatially varying dispersion to model breakthrough curves.  

PubMed

Often the water flowing in a karst conduit is a combination of contaminated water entering at a sinkhole and cleaner water released from the limestone matrix. Transport processes in the conduit are controlled by advection, mixing (dilution and dispersion), and retention-release. In this article, a karst transport model considering advection, spatially varying dispersion, and dilution (from matrix seepage) is developed. Two approximate Green's functions are obtained using transformation of variables, respectively, for the initial-value problem and for the boundary-value problem. A numerical example illustrates that mixing associated with strong spatially varying conduit dispersion can cause strong skewness and long tailing in spring breakthrough curves. Comparison of the predicted breakthrough curve against that measured from a dye-tracing experiment between Ames Sink and Indian Spring, Northwest Florida, shows that the conduit dispersivity can be as large as 400 m. Such a large number is believed to imply strong solute interaction between the conduit and the matrix and/or multiple flow paths in a conduit network. It is concluded that Taylor dispersion is not dominant in transport in a karst conduit, and the complicated retention-release process between mobile- and immobile waters may be described by strong spatially varying conduit dispersion. PMID:21143474

Li, Guangquan

2011-01-01

359

The Missing Link in Alternative Certification: Teacher Identity Formation  

Microsoft Academic Search

Career changers face an identity change as well as an identity formation when coming into the profession of teaching. In this article, symbolic interactionism, narrating identity, and post- structuralism are used to explain this teacher identity formation. All constructs of teacher identity can be seen through these approaches, but career changers are unique in that they need to completely remake

Sheila Allen

360

An Analytical Model for University Identity and Reputation Strategy Work  

ERIC Educational Resources Information Center

Universities face increasing global competition, pressuring them to restructure and find new identities. A multidimensional model: identity, image and reputation of strategic university identity and reputation work is developed. The model includes: organizational identity; employee and student attitudes; symbolic identity; influence from…

Steiner, Lars; Sundstrom, Agneta C.; Sammalisto, Kaisu

2013-01-01

361

When moral identity symbolization motivates prosocial behavior: the role of recognition and moral identity internalization.  

PubMed

This article examines the role of moral identity symbolization in motivating prosocial behaviors. We propose a 3-way interaction of moral identity symbolization, internalization, and recognition to predict prosocial behavior. When moral identity internalization is low, we hypothesize that high moral identity symbolization motivates recognized prosocial behavior due to the opportunity to present one's moral characteristics to others. In contrast, when moral identity internalization is high, prosocial behavior is motivated irrespective of the level of symbolization and recognition. Two studies provide support for this pattern examining volunteering of time. Our results provide a framework for predicting prosocial behavior by combining the 2 dimensions of moral identity with the situational factor of recognition. PMID:23751218

Winterich, Karen Page; Aquino, Karl; Mittal, Vikas; Swartz, Richard

2013-09-01

362

Converging identities: dimensions of acculturation and personal identity status among immigrant college students.  

PubMed

The present study was designed to ascertain the extent to which dimensions of acculturation would differ across personal identity statuses in a sample of 2,411 first- and second-generation, immigrant, college-attending emerging adults. Participants from 30 colleges and universities around the United States completed measures of personal identity processes, as well as of heritage and American cultural practices, values, and identifications. Cluster-analytic procedures were used to classify participants into personal identity statuses based on the personal identity processes. Results indicated that, across ethnic groups, individuals in the achieved and searching moratorium statuses reported the greatest endorsement of heritage and American cultural practices, values, and identifications; and individuals in the carefree diffusion status reported the lowest endorsement of all the cultural variables under study. These results are discussed in terms of the convergence between personal identity and cultural identity processes. PMID:23148900

Schwartz, Seth J; Kim, Su Yeong; Whitbourne, Susan Krauss; Zamboanga, Byron L; Weisskirch, Robert S; Forthun, Larry F; Vazsonyi, Alexander T; Beyers, Wim; Luyckx, Koen

2013-04-01

363

The Sexual Domain of Identity: Sexual Statuses of Identity in Relation to Psychosocial Sexual Health  

Microsoft Academic Search

Sexual identity has been substantially underinvestigated relative to other aspects of identity. The purpose of this study was to document the relationship between sexual psychosocial maturity, positive sexual self-concepts, and effective sexual decision-making\\/coping styles with the identity processes that college students choose to use in defining their sexual self. Participants in the study were 275 undergraduate male and female students

Sally L. Archer; Jeremy A. Grey

2009-01-01

364

'I' and 'We' Identities – an Eliasian Perspective on Lesbian and Gay Identities'  

Microsoft Academic Search

Lesbian and gay sociology has witnessed a reflexive turn in recent years, which emphasises choice, self-creation and self-determination in the formation of sexual identities. Individuals are involved in, what Giddens (1991) called, a 'project of self' or a 'reflexive biography', which allows them to engage in a dynamic and constantly evolving process of defining and re-defining their self-identity. Identity becomes

Allison Moore

2010-01-01

365

Ethnic Self-Identity: A Comparison of Ingroup Evaluations  

ERIC Educational Resources Information Center

This study defines and explains various expressions of ethnicity by the use of an inventory designed to measure degrees of self-identity with respect to ingroup affirmation, ingroup denial, ideal self identity, and real self identity. (Author/DEP)

Driedger, Leo

1976-01-01

366

New varying speed of light theories  

NASA Astrophysics Data System (ADS)

We review recent work on the possibility of a varying speed of light (VSL). We start by discussing the physical meaning of a varying-c, dispelling the myth that the constancy of c is a matter of logical consistency. We then summarize the main VSL mechanisms proposed so far: hard breaking of Lorentz invariance; bimetric theories (where the speeds of gravity and light are not the same); locally Lorentz invariant VSL theories; theories exhibiting a colour-dependent speed of light; varying-c induced by extra dimensions (e.g. in the brane-world scenario); and field theories where VSL results from vacuum polarization or CPT violation. We show how VSL scenarios may solve the cosmological problems usually tackled by inflation, and also how they may produce a scale-invariant spectrum of Gaussian fluctuations, capable of explaining the WMAP data. We then review the connection between VSL and theories of quantum gravity, showing how 'doubly special' relativity has emerged as a VSL effective model of quantum space-time, with observational implications for ultra-high energy cosmic rays (UHECRs) and gamma ray bursts. Some recent work on the physics of 'black' holes and other compact objects in VSL theories is also described, highlighting phenomena associated with spatial (as opposed to temporal) variations in c. Finally, we describe the observational status of the theory. The evidence is currently slim—redshift dependence in the atomic fine structure, anomalies with UHECRs, and (to a much lesser extent) the acceleration of the universe and the WMAP data. The constraints (e.g. those arising from nucleosynthesis or geological bounds) are tight but not insurmountable. We conclude with the observational predictions of the theory and the prospects for its refutation or vindication.

Magueijo, João

2003-11-01

367

Linear Parameter Varying Control for Actuator Failure  

NASA Technical Reports Server (NTRS)

A robust linear parameter varying (LPV) control synthesis is carried out for an HiMAT vehicle subject to loss of control effectiveness. The scheduling parameter is selected to be a function of the estimates of the control effectiveness factors. The estimates are provided on-line by a two-stage Kalman estimator. The inherent conservatism of the LPV design is reducing through the use of a scaling factor on the uncertainty block that represents the estimation errors of the effectiveness factors. Simulations of the controlled system with the on-line estimator show that a superior fault-tolerance can be achieved.

Shin, Jong-Yeob; Wu, N. Eva; Belcastro, Christine; Bushnell, Dennis M. (Technical Monitor)

2002-01-01

368

3D-Printing Spatially Varying BRDFs.  

PubMed

A new method fabricates custom surface reflectance and spatially varying bidirectional reflectance distribution functions (svBRDFs). Researchers optimize a microgeometry for a range of normal distribution functions and simulate the resulting surface's effective reflectance. Using the simulation's results, they reproduce an input svBRDF's appearance by distributing the microgeometry on the printed material's surface. This method lets people print svBRDFs on planar samples with current 3D printing technology, even with a limited set of printing materials. It extends naturally to printing svBRDFs on arbitrary shapes. PMID:24808130

Rouiller, Olivier; Bickel, Bernd; Kautz, Jan; Matusik, Wojciech; Alexa, Marc

2013-01-01

369

Laser lithotripsy retropulsion varies with stone mass  

NASA Astrophysics Data System (ADS)

OBJECTIVES: We tested the hypothesis that retropulsion varies with stone size. METHODS: Stone phantoms of uniform cube dimensions were constructed and irradiated with Ho:YAG energy (0.5 J - 3.5 J). Displacement was measured. RESULTS: At any given pulse energy, retropulsion decreased as stone size increased, p<0.05. At any given stone size, retropulsion increased as pulse energy increased, p<0.05. CONCLUSIONS: A strategy of low pulse energy at high repetition rate is appropriate for ureteral stones. For larger bladder and renal stones, retropulsion is minimal even with high pulse energies. More study is warranted.

Robinson, Michael E.; Teichman, Joel M. H.

370

Kuramoto model with time-varying parameters  

NASA Astrophysics Data System (ADS)

We analyze the Kuramoto model generalized by explicit consideration of deterministically time-varying parameters. The oscillators' natural frequencies and/or couplings are influenced by external forces with constant or distributed strengths. A dynamics of the collective rhythms is observed, consisting of the external system superimposed on the autonomous one, a characteristic feature of many thermodynamically open systems. This deterministic, stable, continuously time-dependent, collective behavior is fully described, and the external impact to the original system is defined in both the adiabatic and the nonadiabatic limits.

Petkoski, Spase; Stefanovska, Aneta

2012-10-01

371

Searching for the Self: An Identity Control Theory Approach to Triggers of Occupational Exploration  

Microsoft Academic Search

Identity control theory researchers have found evidence for two processes of identity development (identity defense and identity change) and have theorized a third process (identity exploration). College students (N = 123) self-rated as high or low in occupational identity certainty and importance received self-discrepant feedback to induce identity disturbance, and dependent measures of identity defense, identity change, and identity exploration

Katherine L. Anderson; Nina S. Mounts

2012-01-01

372

Constructions of lesbian, gay, bisexual and queer identities among young people in contemporary Australia.  

PubMed

This paper focuses on young people's construction of lesbian, gay, bisexual and queer (LGBQ) identities in contemporary Australia. Through the perspectives of young people, it seeks to position their understanding of LGBQ identities alongside current theoretical and empirical debates about the individual and social significance attached to these identity frames. In this qualitative study, 28 young people (aged 18 to 26 years) shared their stories of identifying as LGBQ through online, face-to-face or telephone interviews. The findings highlight how varying elements of LGBQ identities continue to have currency within this group and how young people adopt and refer to these terms interchangeably and in tandem. This is balanced alongside an awareness of both the limitations of lesbian, gay, bisexual and queer identity categories and of the homophobic discourses informing these subject positions. The paper concludes by arguing that health and social care professionals have a integral role to play in supporting LGBQ youth through a process of co-authorship - to work in partnership to construct more enabling self-stories that transcend restrictive identity frames. PMID:22991953

Willis, Paul

2012-01-01

373

Optimizing power output by varying repetition tempo.  

PubMed

The effects of varying interrepetition rest and eccentric velocity on power output (PO) and the number of repetitions performed during a bench press set were examined in 24 college-aged resistance trained men. On 6 separate occasions, subjects performed a set of bench press at 80% 1 repetition maximum until volitional fatigue. For each of the 6 repetition tempo trials, the bench press set was paced by metronome to a unique repetition tempo involving a combination of the following: interrepetition rest of 0 or 4 seconds; eccentric velocity of 1 or 4 seconds and bottom rest of 0 or 3 seconds. The velocity of concentric contraction was maximal during all 6 tempo trials. During each trial, video data were captured to determine PO variables and number of successful repetitions completed at each tempo. One-way repeated measures analysis of variance showed tempos with a fast eccentric phase (1 second), and no bottom rest produced significantly greater (p ? 0.05) PO and repetitions than tempos involving slower eccentric velocity (4 seconds) or greater bottom rest (4 seconds). This combination of greater repetitions and PO resulted in a greater volume of work. Varying interrepetition rest (1 or 4 seconds) did not significantly affect PO or repetitions. The results of this study support the use of fast eccentric speed and no bottom rest during acute performance testing to maximize PO and number of repetitions during a set of bench press. PMID:21881531

Pryor, Riana R; Sforzo, Gary A; King, Deborah L

2011-11-01

374

Detecting skin colors under varying illumination  

NASA Astrophysics Data System (ADS)

Skin color has been used as an important cue for various human related computer vision applications. However, detecting skin colors under varying illumination is a challenging task, as the appearance of skin in an image highly depends on the illumination under which the image was taken. To this end, a method for detecting skin colors under varying illumination is proposed in this paper. First, spatial illumination variation is identified and the images are segmented into different regions with different illumination. Each illumination region of color images are corrected base on the illuminant estimated by a local edge-based color constancy algorithm. Then, the corrected images are transformed into a color-space, where statistical results on a skin dataset show that the skin color cluster and non-skin color clusters are separated. Finally, the skin colors are modeled under Bayesian decision framework and classified from non-skin colors. The experimental results show that the proposed method is robust to illumination variations.

Liu, Leyuan; Huang, Rui; Yang, Saiyong; Sang, Nong

2011-11-01

375

Varying prior information in Bayesian inversion  

NASA Astrophysics Data System (ADS)

Bayes' rule is used to combine likelihood and prior probability distributions. The former represents knowledge derived from new data, the latter represents pre-existing knowledge; the Bayesian combination is the so-called posterior distribution, representing the resultant new state of knowledge. While varying the likelihood due to differing data observations is common, there are also situations where the prior distribution must be changed or replaced repeatedly. For example, in mixture density neural network (MDN) inversion, using current methods the neural network employed for inversion needs to be retrained every time prior information changes. We develop a method of prior replacement to vary the prior without re-training the network. Thus the efficiency of MDN inversions can be increased, typically by orders of magnitude when applied to geophysical problems. We demonstrate this for the inversion of seismic attributes in a synthetic subsurface geological reservoir model. We also present results which suggest that prior replacement can be used to control the statistical properties (such as variance) of the final estimate of the posterior in more general (e.g., Monte Carlo based) inverse problem solutions.

Walker, Matthew; Curtis, Andrew

2014-06-01

376

Transient, spatially varied groundwater recharge modeling  

NASA Astrophysics Data System (ADS)

The objective of this work is to integrate field data and modeling tools in producing temporally and spatially varying groundwater recharge in a pilot watershed in North Okanagan, Canada. The recharge modeling is undertaken by using the Richards equation based finite element code (HYDRUS-1D), ArcGIS™, ROSETTA, in situ observations of soil temperature and soil moisture, and a long-term gridded climate data. The public version of HYDUS-1D and another version with detailed freezing and thawing module are first used to simulate soil temperature, snow pack, and soil moisture over a one year experimental period. Statistical analysis of the results show both versions of HYDRUS-1D reproduce observed variables to the same degree. After evaluating model performance using field data and ROSETTA derived soil hydraulic parameters, the HYDRUS-1D code is coupled with ArcGIS™ to produce spatially and temporally varying recharge maps throughout the Deep Creek watershed. Temporal and spatial analysis of 25 years daily recharge results at various representative points across the study watershed reveal significant temporal and spatial variations; average recharge estimated at 77.8 ± 50.8 mm/year. Previous studies in the Okanagan Basin used Hydrologic Evaluation of Landfill Performance without any attempt of model performance evaluation, notwithstanding its inherent limitations. Thus, climate change impact results from this previous study and similar others, such as Jyrkama and Sykes (2007), need to be interpreted with caution.

Assefa, Kibreab Amare; Woodbury, Allan D.

2013-08-01

377

Controlling Contagion Processes in Time Varying Networks  

NASA Astrophysics Data System (ADS)

The vast majority of strategies aimed at controlling contagion and spreading processes on networks consider the connectivity pattern of the system as quenched. In this paper, we consider the class of activity driven networks to analytically evaluate how different control strategies perform in time-varying networks. We consider the limit in which the evolution of the structure of the network and the spreading process are simultaneous yet independent. We analyze three control strategies based on node's activity patterns to decide the removal/immunization of nodes. We find that targeted strategies aimed at the removal of active nodes outperform by orders of magnitude the widely used random strategies. In time-varying networks however any finite time observation of the network dynamics provides only incomplete information on the nodes' activity and does not allow the precise ranking of the most active nodes as needed to implement targeted strategies. Here we develop a control strategy that focuses on targeting the egocentric time-aggregated network of a small control group of nodes.The presented strategy allows the control of spreading processes by removing a fraction of nodes much smaller than the random strategy while at the same time limiting the observation time on the system.

Liu, Suyu; Perra, Nicola; Karsai, Marton; Vespignani, Alessandro

2013-03-01

378

Telencephalic progenitors maintain anteroposterior identities cell autonomously.  

PubMed

Grafting experiments have demonstrated that determination of anteroposterior (AP) identity is an early step in neural patterning that precedes dorsoventral (DV) specification [1,2]. These studies used pieces of tissue, however, rather than individual cells to address this question. It thus remains unclear whether the maintenance of AP identity is a cell-autonomous property or a result of signaling between cells within the grafted tissue. Previously, we and others [3-5] have used transplants of dissociated brain cells to show that individual telencephalic precursor cells can adopt host-specific DV identities when they integrate within novel regions of the telencephalon. We have now undertaken a set of transplantations during the same mid-neurogenic period used in the previous studies to assess the ability of telencephalic progenitors to integrate and differentiate into more posterior regions of the neuraxis. We observed that telencephalic progenitors were capable of integrating and migrating within different AP levels of the central nervous system (CNS). Despite this, we found that telencephalic progenitors that integrated within the diencephalon and the mesencephalon continued to express a telencephalic marker until adulthood. We speculate that during neurogenesis individual progenitors are determined in terms of their AP but not their DV identity. Hence, AP identity is maintained cell autonomously within individual progenitors. PMID:9742404

Na, E; McCarthy, M; Neyt, C; Lai, E; Fishell, G

1998-08-27

379

Hemifield Effects in Multiple Identity Tracking  

PubMed Central

In everyday life, we often need to attentively track moving objects. A previous study has claimed that this tracking occurs independently in the left and right visual hemifields (Alvarez & Cavanagh, 2005, Psychological Science,16, 637–647). Specifically, it was shown that observers were much more accurate at tracking objects that were spread over both visual hemifields as opposed to when all were confined to a single visual hemifield. In that study, observers were not required to remember the identities of the objects. Conversely, in real life, there is seldom any benefit to tracking an object unless you can also recall its identity. It has been predicted that when observers are required to remember the identities of the tracked objects a bilateral advantage should no longer be observed (Oksama & Hyönä, 2008, Cognitive Psychology, 56, 237–283). We tested this prediction and found that a bilateral advantage still occurred, though it was not as strong as when observers were not required to remember the identities of the targets. Even in the later case we found that tracking was not completely independent in the two visual hemifields. We present a combined model of multiple object tracking and multiple identity tracking that can explain our data.

Hudson, Charlotte; Howe, Piers D. L.; Little, Daniel R.

2012-01-01

380

Varying capacities for replication of rat adipocyte precursor clones and adipose tissue growth.  

PubMed Central

Rat adipocyte precursor populations contain clones varying in capacity for replication. In this study we explored factors controlling the frequency of clones of varying replicative capacities (clonal composition). We also explored the relationship between this frequency and fat depot growth. In perirenal and epididymal depots clonal composition was identical bilaterally; perirenal depots contained more extensively replicating clones. Although there were large interanimal differences in clonal composition, variation between animals was always in the same direction for both depots. Clonal composition was unaffected by undernutrition while with animal growth the frequency of the most extensively replicating clones was reduced. Differentiation of precursors occurred in all clones, while differentiation did not occur in skin fibroblasts cloned under identical conditions. Clonal composition and mature fat cell number were related in that fat cell numbers were identical bilaterally in both depots and increased more extensively with growth in perirenal than epididymal tissue. We conclude (a) that clonal composition of adipocyte precursor populations is regulated genetically and by age, (b) that this composition determines, at least in part, the capacity for adipose depot growth.

Wang, H; Kirkland, J L; Hollenberg, C H

1989-01-01

381

Talker Separation and Sequential Stream Segregation in Listeners with Hearing Loss: Patterns Associated with Talker Gender.  

ERIC Educational Resources Information Center

This study of 11 listeners with sensorineural hearing loss examined the ability to separate simultaneous spoken sentences of speakers of different gender and the ability to separate pitch patterns in a sequential stream segregation task. Results suggest that the importance of streaming in the perceptual separation of speakers may depend on the…

Mackersie, Carol L.

2003-01-01

382

Identity Theft: A Study in Contact Centres  

NASA Astrophysics Data System (ADS)

This paper explores the recent phenomenon of identity theft. In particular, it examines the contact centre environment as a mechanism for this to occur. Through a survey that was conducted amongst forty-five contact centre workers in the Glasgow area we determined that contact centres can and do provide a mechanism for identity theft. Specifically, we found a particularly high incidence of agents who had previously dealt with phone calls that they considered suspicious. Furthermore, there are agents within such environments who have previously been offered money in exchange for customers' details, or who know of fellow workers who received such offers. Lastly, we identify specific practices within contact centres that may contribute to the likelihood of identity theft.

Moir, Iain; Weir, George R. S.

383

Tracking Identity: Academic Performance and Ethnic Identity among Ecuadorian Immigrant Teenagers in Madrid  

ERIC Educational Resources Information Center

This article examines Ecuadorian students' attempts to contest immigrant stereotypes and redefine their social identities in Madrid, Spain. I argue that academic tracking plays a pivotal role in the trajectory of students' emergent ethnic identity. To illustrate this process, I focus on students who abandon their academic and professional…

Lucko, Jennifer

2011-01-01

384

LGB Allies and Christian Identity: A Qualitative Exploration of Resolving Conflicts and Integrating Identities  

ERIC Educational Resources Information Center

A phenomenological method of qualitative inquiry was used to understand the process by which individuals who hold identities of being both a Christian and an ally of lesbian, gay, and bisexual (LGB) individuals make meaning of and integrate these 2 identities. Interviews were conducted with 11 doctoral-level psychologists who self-identified as…

Borgman, Amy L.

2009-01-01

385

Student Engineers and Engineer Identity: Campus Engineer Identities as Figured World  

Microsoft Academic Search

The research reported here contributes to understanding how student engineers on an engineering campus in the US mid-continent not only talked about the kinds of people recognized as engineers on campus, but also juxtaposes their talk about “campus engineer identities” with two students' ways of presenting themselves as engineers through engineering project teamwork to argue that campus engineer identities framed

Karen L. Tonso

2006-01-01

386

Time varying arctic climate change amplification  

SciTech Connect

During the past 130 years the global mean surface air temperature has risen by about 0.75 K. Due to feedbacks -- including the snow/ice albedo feedback -- the warming in the Arctic is expected to proceed at a faster rate than the global average. Climate model simulations suggest that this Arctic amplification produces warming that is two to three times larger than the global mean. Understanding the Arctic amplification is essential for projections of future Arctic climate including sea ice extent and melting of the Greenland ice sheet. We use the temperature records from the Arctic stations to show that (a) the Arctic amplification is larger at latitudes above 700 N compared to those within 64-70oN belt, and that, surprisingly; (b) the ratio of the Arctic to global rate of temperature change is not constant but varies on the decadal timescale. This time dependence will affect future projections of climate changes in the Arctic.

Chylek, Petr [Los Alamos National Laboratory; Dubey, Manvendra K [Los Alamos National Laboratory; Lesins, Glen [DALLHOUSIE U; Wang, Muyin [NOAA/JISAO

2009-01-01

387

Inference of temporally varying Bayesian Networks  

PubMed Central

Motivation: When analysing gene expression time series data, an often overlooked but crucial aspect of the model is that the regulatory network structure may change over time. Although some approaches have addressed this problem previously in the literature, many are not well suited to the sequential nature of the data. Results: Here, we present a method that allows us to infer regulatory network structures that may vary between time points, using a set of hidden states that describe the network structure at a given time point. To model the distribution of the hidden states, we have applied the Hierarchical Dirichlet Process Hidden Markov Model, a non-parametric extension of the traditional Hidden Markov Model, which does not require us to fix the number of hidden states in advance. We apply our method to existing microarray expression data as well as demonstrating is efficacy on simulated test data. Contact: thomas.thorne@imperial.ac.uk

Thorne, Thomas; Stumpf, Michael P. H.

2012-01-01

388

Varying Fundamental Constants: A Dynamical Systems Approach  

NASA Astrophysics Data System (ADS)

Theory of dynamical systems offers a possibility of investigating the space of all possible solutions. In the context of simple cosmological models such like Varying Speed of Light Friedman- Robertson-Walker (VSL FRW) models there exists a systematic method of reducing field equations to certain two-dimensional dynamical system. One of the features of this reduction is the possibility of representing the model as a Hamiltonian system in which the properties of the potential function V(X) can serve as a tool for qualitative classification of possible evolutions of a(t). Some important features like resolution of the flatness problem, existence of event horizons near the singularity can be visualized as domains on the phase-space. Then one is able to see how large is the class of solutions (labelled by the initial conditions) leading to the desired property.

Biesiada, Marek

389

Climate dynamics: Why does climate vary?  

NASA Astrophysics Data System (ADS)

In recent years, climate change has become a major focus of public and political discussion. Ongoing scientific inquiry, revolving predominantly around understanding the anthropogenic effects of rising greenhouse gas levels, coupled with how successfully findings are communicated to the public, has made climate science both contentious and exigent. In the AGU monograph Climate Dynamics: Why Does Climate Vary?, editors De-Zheng Sun and Frank Bryan reinforce the importance of investigating the complex dynamics that underlie the natural variability of the climate system. Understanding this complexity—particularly how the natural variability of climate may enhance or mask anthropogenic warming—could have important consequences for the future. In this interview, Eos talks to De-Zheng Sun.

Schultz, Colin

2011-08-01

390

Qualitative analysis of universes with varying alpha  

NASA Astrophysics Data System (ADS)

Assuming a Friedmann universe which evolves with a power-law scale factor, a = t n, we analyse the phase space of the system of equations that describes a time-varying fine structure 'constant', ?, in the Bekenstein-Sandvik-Barrow-Magueijo generalization of general relativity. We have classified all the possible behaviours of ?(t) in ever-expanding universes with different n and find new exact solutions for ?(t). We find the attractor points in the phase space for all n. In general, ? will be a non-decreasing function of time that increases logarithmically in time during a period when the expansion is dust dominated (n = 2/3), but becomes constant when n > 2/3. This includes the case of negative-curvature domination (n = 1). ? also tends rapidly to a constant when the expansion scale factor increases exponentially. A general set of conditions is established for ? to become asymptotically constant at late times in an expanding universe.

Barrow, John D.; Mota, David F.

2002-12-01

391

An ETAS model with varying productivity rates  

NASA Astrophysics Data System (ADS)

We present an epidemic type aftershock sequenc (ETAS) model where the offspring rates vary both spatially and temporally. This is achieved by distinguishing between those space-time volumes where the interpoint space and time distances are small, and those where they are considerably larger. We also question the nature of the background component in the ETAS model. Is it simply a temporal boundary correction (t = 0) or does it represent an additional tectonic process not described by the aftershock component? The form of these stochastic models should not be considered to be fixed. As we accumulate larger and better earthquake catalogues, GPS data, strain rates, etc., we have the ability to ask more complex questions about the nature of the process. By fitting modified models consistent with such questions, we should gain a better insight into the earthquake process. Hence, we consider a sequence of incrementally modified ETAS type models rather than `the' ETAS model.

Harte, D. S.

2014-05-01

392

An ETAS model with varying productivity rates  

NASA Astrophysics Data System (ADS)

We present an epidemic type aftershock sequenc (ETAS) model where the offspring rates vary both spatially and temporally. This is achieved by distinguishing between those space-time volumes where the interpoint space and time distances are small, and those where they are considerably larger. We also question the nature of the background component in the ETAS model. Is it simply a temporal boundary correction (t = 0) or does it represent an additional tectonic process not described by the aftershock component? The form of these stochastic models should not be considered to be fixed. As we accumulate larger and better earthquake catalogues, GPS data, strain rates, etc., we have the ability to ask more complex questions about the nature of the process. By fitting modified models consistent with such questions, we should gain a better insight into the earthquake process. Hence, we consider a sequence of incrementally modified ETAS type models rather than `the' ETAS model.

Harte, D. S.

2014-07-01

393

The status of personnel identity verifiers  

SciTech Connect

Identity verification devices based on the interrogation of six different human biometric features or actions now exist and in general have been in development for about ten years. The capability of these devices to meet the cost and operational requirements of speed, accuracy, ease of use and reliability has generally increased although the verifier industry is still immature. Sandia Laboratories makes a continuing effort to stay abreast of identity verifier developments and to assess the capabilities and improvements of each device. Operating environment and procedures more typical of field use can often reveal performance results substantially different from laboratory tests. An evaluation of several recently available verifiers is herein reported.

Maxwell, R.L.

1985-01-01

394

Outside the Text: Retheorizing Empiricism and Identity  

ERIC Educational Resources Information Center

Recent theoretical and technological developments, including concepts of networking elaborated by Bruno Latour, enable composition studies to take an empiricist turn toward issues of identity. More specifically, these developments help the field more strongly connect the figure of the writing-subject to the experiences of actual writers. In this…

Sanchez, Raul

2012-01-01

395

Development of Professional Identity in SMEs.  

ERIC Educational Resources Information Center

This paper describes a study of the development of professional identity among employees in small and medium sized enterprises (SMEs) participating in large-scale company-wide training programs. Managers and employees in 175 SMEs in Finland participated. These two research questions were posed: (1) are there differences in the perceptions of…

Puurula, Arja; Lofstrom, Erika

396

Adolescent Psychological Development: Rationality, Morality, and Identity.  

ERIC Educational Resources Information Center

This book presents a constructivist approach to the development of rationality, morality, and identity in adolescence and early adulthood. It provides a review of post-Piagetian approaches to adolescent cognition, examining classic theories and current research in these three domains. The first chapter focuses discussion on adolescent…

Moshman, David

397

Stress and Identity among Black Males.  

ERIC Educational Resources Information Center

Twenty Black American males' reactions to slides depicting interracial climate and/or racial oppression were investigated by recording physiological responses, specifically, galvanic skin potential (GSP) and heart rate (HR). Participants were also given the Myers/Stokes Identity Scale (MSIS) to ascertain their reaction to oppression and, based on…

Stokes, DeVon R.

398

Engineering identity as a developmental process  

Microsoft Academic Search

Previous studies of undergraduate engineering students have raised questions of a student’s engineering identity influencing their experience, both as an individual and also as part of a unique social culture. Aspects considered include motivation for initially selecting engineering as a major, persisting in engineering, navigating the curricular structures for degree completion, and intentions to pursue engineering in a form of

Kerry L Meyers

2009-01-01

399

Education: A Forgotten Dimension of Church Identity?  

ERIC Educational Resources Information Center

In general churches talk a lot about the importance of education. At the same time their educational praxis is often fragmentized. The most crucial factor for this is a weak connection between the Church's identity and its activity. When this link is diffuse, different activities have a tendency to live their own lives. This article examines some…

Larsson, Rune

2010-01-01

400

Nonparametric Identication of Nonlinear Oscillating Systems  

Microsoft Academic Search

The problem of system identication from a time series of measurements is solved by using nonparametric additive models. Having only few structural infor- mation about the system, a nonparametric approach may be more appropriate than a parametric one for which detailed prior knowledge is needed. Based on nonpara- metric regression, the functions in the additive models are estimated by a

M. Peifer; J. Timmer; H. U. Voss

2003-01-01

401

Black Racial Identity Development: Issues and Concerns.  

ERIC Educational Resources Information Center

Comments on two opening articles by Parham ("Cycles of Psychological Nigrescence") and Helms ("Considering Some Methodological Issues in Racial Identity Counseling Research"). Suggests that the connotations of victimization and racial conflict in the concept of "psychological Nigrescence" are obsolete. Offers 11 propositions in search of a…

Smith, Elsie M. J.

1989-01-01

402

Understanding New Teachers' Professional Identities through Metaphor  

ERIC Educational Resources Information Center

This qualitative study based on semi-structured interviews examines the metaphors new teachers use to describe their professional identities and compares metaphors chosen immediately following graduation with those suggested part way through their first year of teaching. Findings indicate that new teachers make a shift from seeing themselves as…

Thomas, Lynn; Beauchamp, Catherine

2011-01-01

403

Scholar-Practitioner Identity: A Liminal Perspective  

ERIC Educational Resources Information Center

In this article the author attempts to identify the processes associated with the development of identity as a scholar-practitioner and provide insight into how positionality in effecting change in our world is perceived. The author begins by presenting an overview of scholar practitioner ideology, as well as an examination of the deconstruction…

Bouck, Gregory M.

2011-01-01

404

Studies of Identical Twins Reared Apart  

Microsoft Academic Search

Presents a case report of four pairs of identical twins who were reared apart. These summaries and analyses of data were collected by Barbara Burks and found in her files after her death. There are often cryptic notations which were obviously intended to remind her of incidents or opinions which she would have remembered in analyzing the data. The impossibility

Barbara S. Burks; Anne Roe; Lewis M. Terman

1949-01-01

405

Building an Identity Management Governance Process  

ERIC Educational Resources Information Center

A particular challenge in any campus environment is determining how requests for access to services and resources are managed. Who decides the technology, infrastructure, policy, business process and procedure? The involvement of key institutional leaders and stakeholders in identity management governance is the driving force behind the way the…

Berg, Joanne E.; Kraemer, Ron; Raatz, Carla; Devoti, Steve

2009-01-01

406

Development of a Cuban Ethnic Identity Questionnaire.  

ERIC Educational Resources Information Center

The Cuban Behavioral Identity Questionnaire is a short, eight-item questionnaire answerable in a seven-point Likert-scale format. It inquires as to the frequency with which respondents engage in several ethnic behaviors and the degree to which they are familiar with Cuban idiomatic expressions and Cuban artists/musicians. (Author/NQ)

Garcia, Margarita; Lega, Leonor I.

1979-01-01

407

Returning forests analyzed with the forest identity  

PubMed Central

Amid widespread reports of deforestation, some nations have nevertheless experienced transitions from deforestation to reforestation. In a causal relationship, the Forest Identity relates the carbon sequestered in forests to the changing variables of national or regional forest area, growing stock density per area, biomass per growing stock volume, and carbon concentration in the biomass. It quantifies the sources of change of a nation's forests. The Identity also logically relates the quantitative impact on forest expanse of shifting timber harvest to regions and plantations where density grows faster. Among 50 nations with extensive forests reported in the Food and Agriculture Organization's comprehensive Global Forest Resources Assessment 2005, no nation where annual per capita gross domestic product exceeded $4,600 had a negative rate of growing stock change. Using the Forest Identity and national data from the Assessment report, a single synoptic chart arrays the 50 nations with coordinates of the rates of change of basic variables, reveals both clusters of nations and outliers, and suggests trends in returning forests and their attributes. The Forest Identity also could serve as a tool for setting forest goals and illuminating how national policies accelerate or retard the forest transitions that are diffusing among nations.

Kauppi, Pekka E.; Ausubel, Jesse H.; Fang, Jingyun; Mather, Alexander S.; Sedjo, Roger A.; Waggoner, Paul E.

2006-01-01

408

Social Identity Theories and Educational Engagement  

ERIC Educational Resources Information Center

There is a large body of research in studies of schooling, particularly ethnographic case studies, which posits that collective action among students undermines engagement in school and contributes to educational inequality. In this paper I review studies of engagement from a social identity theory perspective. To what extent can collective action…

Kelly, Sean

2009-01-01

409

Popular Music, Television, and Generational Identity.  

ERIC Educational Resources Information Center

Although previous generations have by no means been disloyal to the popular music of their youth, the tenacious attachment of the Baby Boomers to the music of the 1960s seems unprecedented. Three main reasons account for this constantly widening musical reclamation project. First, the Baby Boomers have a clearer sense of generational identity that…

Burns, Gary

410

Children's Identities as Readers and Writers  

ERIC Educational Resources Information Center

In this article, the author shares the reflections of second graders at PS 11, an elementary school in the Chelsea section of Manhattan, on their identities as readers and writers through a photo essay. It is through these two mediums that they are coming to know themselves as learners and as human beings. One example of student comments is, Billy…

Braccio, Danielle

2006-01-01

411

Identical particle model on biophoton emission  

NASA Astrophysics Data System (ADS)

Biophoton emission (PE) method is a non-invasive way revealing biophysical interactions in living tissues. Since its mechanism is not very clear, its acceptance is limited. Gu has presented the quantum theory on biophoton emission according to the Dicke model. However, the Dicke model does not apply to biological system. In this paper, we studied PE by using the identical particle model, the interaction of identical particles by quantum chemistry, as well as the transition of the system interacting with radiation by the time quantum theory on radiation-matter interaction put forward by the first author and his cooperators. It was shown that the identical particles form coherent states, the photon emission probability of the superradiant state is a liner function of N and N2, and the one of the subradiant state is zero. In other words, the photon emission intensity represents the coherent states of the identical particle system. The linear relationship of N and N2 agrees with the PE experiment results on early drosophila embryos. The research on the cell division cycle showed that the superradiant states correspond to the late S phase. This is why PE can be used to differentiate human tumor tissues from normal ones. We also studied induced PE.

Liu, T. C.; Liu, Songhao; Popp, Fritz A.; Tang, Ao-Qing

1996-09-01

412

Accommodations: Staff Identity and University Space  

ERIC Educational Resources Information Center

Space has been of growing significance in social theory in recent years, yet, explorations of it in the scholarship of higher education have been limited. This is surprising, given the critical role space has in shaping staff and students' engagement with the university. Taking a practice-based approach and focusing on academic identities, this…

Cox, Andrew; Herrick, Tim; Keating, Patrick

2012-01-01

413

Engineering in America: Seeking a New Identity.  

ERIC Educational Resources Information Center

Engineering, in spite of all the activity in the fields of energy extraction and space exploration, remains a profession in crisis. What is at stake is not simply the identity of engineering as a profession, but the means by which engineers are educated. (Author)

Ferkiss, Victor

1982-01-01

414

Flashcard: Alternating between Visible and Invisible Identities  

ERIC Educational Resources Information Center

This article addresses how my experiences as a black deaf female viscerally and simultaneously shape me. I use the metaphor of flashcards. Flipping over flashcards or "flashing" depicts how certain contexts incite and/or promote the visibility or invisibility of identities, particularly between the familial and educational contexts. Also, I…

Mitchell, Dymaneke Dinnel

2006-01-01

415

Globalization and Identity Development: A Chinese Perspective  

ERIC Educational Resources Information Center

This chapter begins with a discussion of the unique experience of adolescents and emerging adults who grew up with globalization in China and how it has affected their sense of self. We then discuss the effects of globalization on identity development in general, with a special focus on the sociohistorical context of China. We also review and…

Cheng, Min; Berman, Steven L.

2012-01-01

416

Terminology and Classification of Gender Identity Disorders  

Microsoft Academic Search

German clinicians began describing individuals with some form of gender discomfort over 160 vears ago. This culminated with the publication of Die Transvestiten by Magnus Hirschfeld in 1910. Currently, the most commonly used terms for these conditions are transsexualism, gender dysphoia, and gender identity disorders (GID). With the publication of the 3rd edition of The Diagnostic and Statistical Manual (DSM-III)

Ira B. Pauly

1993-01-01

417

Psychiatric comorbidity in gender identity disorder  

Microsoft Academic Search

ObjectiveDespite being recognized as an important prognostic factor for the outcome in gender identity disorder (GID), psychiatric comorbidity has rarely been assessed by means of standardized diagnostic instruments. The aim of this study was to assess current and lifetime psychiatric comorbidity in patients with GID.

U. Hepp; B. Kraemer; U. Schnyder; N. Miller; A. Delsignore

2005-01-01

418

Gender Identity Disorders in Childhood and Adolescence  

Microsoft Academic Search

While debates continue as to whether or not a diagnosis of gender identity disorder (GID) is wanted or needed by today's adult transsexual, there is increasing concern both in academic and lay literature regarding the diagnosis of children and adolescents with GID. This paper critically evaluates the diagnosis, assessment, and treatment of GID in children and adolescents in light of

Darryl B. Hill; Christina Rozanski; Jessica Carfagnini; Brian Willoughby

2007-01-01

419

[Gender identity disorder in children and adolescents].  

PubMed

There has been an explosion of public interest and concern about children and adolescents who show an interest in changing their gender. And it is an emerging problem for pediatricians, which brings many inquiries about what to do? Both the diagnosis and treatment of gender identity disorder are controversial. But there are a new early treatment using puberty blocking hormones. PMID:23332515

Le Heuzey, M-F

2013-03-01

420

Gender differences in implicit weight identity  

Microsoft Academic Search

Objective: This study examined gender differences in explicit and implicit atti- tudes toward overweight and explicit and implicit weight identity. Method: Normal weight women (n ¼22) and men (n ¼20) and overweight women (n ¼20) and men (n ¼21) com- pleted the Implicit Association Test and portions of the Eating Disorders Questionnaire. Results: Although explicit and implicit anti-fat attitudes were

Vishal P. Grover; Pamela K. Keel; Jason P. Mitchell

2003-01-01

421

Construing stigmatized identities: A golden section study  

Microsoft Academic Search

Objectives. In order to examine whether persons belonging to stigmatized groups are evaluated more negatively than others, this study employed the golden section hypothesis, which predicts that people organize their evaluations in a ratio of roughly 62% positive to 38% negative. Method. Surveys were administered to 154 participants, with 143 surveys analysed. Participants rated nine different identities (business person, politician,

Jonathan D. Raskin; Melanie T. Harasym; Matthew A. Mercuri; Rebekah M. Widrick

2008-01-01

422

Emotional Intelligence, Identity Salience, and Metaphors. Symposium.  

ERIC Educational Resources Information Center

This document contains three papers from a symposium on emotional intelligence, identity salience, and metaphors in human resource development (HRD). "Applying Client and Consultant Generated Metaphors in HRD: Lessons from Psychotherapy" (Darren Short) reviews some techniques that psychotherapists have devised for using their own metaphors and the…

2002

423

Identity, Literacy, and English-Language Teaching  

ERIC Educational Resources Information Center

In the field of English-language teaching, there has been increasing interest in how literacy development is influenced by institutional and community practice and how power is implicated in language-learners' engagement with text. In this article, I trace the trajectory of my research on identity, literacy, and English-language teaching informed…

Norton, Bonny

2010-01-01

424

Locational Feminisms and Feminist Social Identity Analysis  

Microsoft Academic Search

Locational feminisms encompass the many manifestations that feminisms assume as they emerge, travel, and are transplanted in a wide range of temporal, spatial, and cultural settings. Locational feminisms explore the interlocking oppressions and privileges associated with multidimensional and complex social identities associated with race, ethnicity, gender, sexual orientation, age, culture, disability, and other social statuses. They also critique feminisms based

Carolyn Zerbe Enns

2010-01-01

425

Developing People in Organizations: Working (on) Identity  

ERIC Educational Resources Information Center

In recent years there has been significant growth in research that has considered the relationship between worker identity and learning at work. A key part of this relates to discussions of the 'newness' of various types of work manifested in discourses such as post-capitalism, post-bureaucracy and the new work order. On this basis, it is argued…

Rhodes, Carl; Scheeres, Hermine

2004-01-01

426

Seeking new identity through the empowerment process  

PubMed Central

Background: All health professionals are responsible for facilitating empowerment among people with diabetes. However, research suggests that health professionals do not have the knowledge and skills to help people with diabetes become empowered. As a result, many Iranian people with diabetes do not become empowered. The aim of the study was to explore and understand how empowerment occurs in Iranian people with diabetes. Materials and Methods: Grounded theory using individual open in-depth interviews, field notes, and memos was used to collect data from 25 people with diabetes, their families, and health professionals. Strauss and Corbin's constant comparative analysis was used to analyze the data. Findings: Empowerment is a transitional, perceptual, and continuous process. The process for people with diabetes includes threatened identity when diabetes is diagnosed, reconstructing identity, and integrating diabetes into identity to become an empowered person with diabetes. The empowerment process was influenced by a combination of knowledge, social support, values and beliefs, psychosocial issues, and the nature of diabetes. Conclusions: Health professionals can help people with diabetes integrate diabetes into their identity and become empowered; however, becoming empowered is complicated and occurs over time.

Abdoli, Samereh; Ashktorab, Tahereh; Ahmadi, Fazlollah; Parvizy, Soroor; Dunning, Trisha

2014-01-01

427

Identity and Civic Engagement in Adolescence  

ERIC Educational Resources Information Center

The purpose of this study was to examine the links between identity (statuses and processes) and adolescent civic engagement (volunteer and political participation). Participants were 392 Italian high school students (42% males) aged 14-20 years (M[subscript age] = 16.23 years; SD[subscript age] = 1.53) who completed a self-report questionnaire.…

Crocetti, Elisabetta; Jahromi, Parissa; Meeus, Wim

2012-01-01

428

Conceptualizing Heterosexual Identity Development: Issues and Challenges  

ERIC Educational Resources Information Center

This article summarizes the work of R. L. Worthington and J. J. Mohr (2002); R. L. Worthington, H. B. Savoy, F. R. Dillon, and E. R. Vernaglia (2002); and J. J. Mohr (2002) on heterosexual identity development that constituted the Major Contribution section of the July 2002 issue of The Counseling Psychologist. The author provides an overview of…

Hoffman, Rose Marie

2004-01-01

429

Transsexualism, Gender Identity Disorder and the DSM  

Microsoft Academic Search

The American Psychiatric Association (APA) is currently in the process of revising the fifth edition of the Diagnostic and Statistical Manual (DSM). Members of the lesbian, gay, bisexual, and transgender (LGBT) community have expressed interest and concern regarding the future status of the diagnostic categories of Gender Identity Disorder (GID) of Adolescence and Adulthood and GID of Childhood (GIDC) in

Jack Drescher

2010-01-01

430

Sport, identity politics, gender and globalization  

Microsoft Academic Search

This paper seeks to bring together two papers that I worked on during the early 1990s. My focus was on both opening up for debate the concept of globalization, applying it to sport and using an Eliasian approach. In addition, i sought to draw together issues of national identity, gender and globalization – as issue which was, and, to a

Joseph A. Maguire

2011-01-01

431

Relation Between Ego Identity and Temporal Perspective  

Microsoft Academic Search

This study involved an attempt to expand Marcia’s (1975) ego identity concept to include the area of temporal perspective. Subjects were 80 Temple University male undergraduates. We measured temporal perspective with the Rappaport Time Line. We measured temporal density (percentage of experiences in each of five time zones), temporal extension (chronological time spans for the past, future, and overall), and

Herbert Rappaport; Kathy Enrich; Arnold Wilson

1985-01-01

432

The Morphological Identity of Insect Dendrites  

Microsoft Academic Search

Dendrite morphology, a neuron's anatomical fingerprint, is a neuroscientist's asset in unveiling organizational principles in the brain. However, the genetic program encoding the morphological identity of a single dendrite remains a mystery. In order to obtain a formal understanding of dendritic branching, we studied distributions of morphological parameters in a group of four individually identifiable neurons of the fly visual

Hermann Cuntz; Friedrich Forstner; Juergen Haag; Alexander Borst

2008-01-01

433

Exploring Identities in a Reading Specialization Program  

ERIC Educational Resources Information Center

This qualitative study used theories of language and learning to explore the identities of one preservice teacher in a reading specialization program. Data sources included archived online course responses, interviews, journals, and an electronic portfolio. Analysis indicates that the participant used multiple discourses as an immigrant,…

Assaf, Lori Czop

2005-01-01

434

Read-once polynomial identity testing  

Microsoft Academic Search

An arithmetic read-once formula (ROF for short) is a formula (a circuit in which the fan- out of every gate is at most 1) in which the operations are{+,?} and such that every input variable labels at most one leaf. In this paper we study the problems of identity testing and reconstruction of read-once formulas. the following are some of

Amir Shpilka; Ilya Volkovich

2008-01-01

435

Southeast Asian Adolescents: Identity and Adjustment.  

ERIC Educational Resources Information Center

Southeast Asian refugee youth in the United States must contend with significant cultural differences and long-term adjustment stress. While struggling to develop an adult identity, these adolescents must also work through the trauma of being refugees, adapting to a new culture without relinquishing the heritage fundamental to their development.…

Ascher, Carol

1990-01-01

436

Object identity as a query language primitive  

Microsoft Academic Search

We demonstrate the power of object identities (oids) as a database query language primitive. We develop an object-based data model, whose structural part generalizes most of the known complex-object data models: cyclicity is allowed in both its schemas and instances. Our main contribution is the operational part of the data model, the query language IQL, which uses oids for three

Serge Abiteboul; Paris C. Kanellakis

1989-01-01

437

Special Issue: On Ageing and Identity.  

ERIC Educational Resources Information Center

Includes "Foreword. Social Theory and Educational Gerontology: Themes and Future Perspectives" (Phillipson); "Can There Be a Cultural Sociology of Ageing?" (Blaikie); "Consumers, Identity and Old Age" (Vincent); "Population Ageing: Critical Gerontology and the Sociological Tradition" (Phillipson, Biggs); "Ordering the Disorderly" (Oliver); and…

Phillipson, Chris, Ed.

1999-01-01

438

Identity, Motivation and Autonomy in Language Learning  

ERIC Educational Resources Information Center

In this volume researchers from Asia, Europe, the Middle East and North and South America employ a variety of theoretical perspectives and methodological approaches in their exploration of the links between identity, motivation, and autonomy in language learning. On a conceptual level the authors explore issues related to agency, metacognition,…

Lamb, Terry; Murray, Garold; Gao, Xuesong

2011-01-01

439

From the Pentagon: A New Identity Framework  

Microsoft Academic Search

This paper summarizes the latest developments relating to a new approach to corporate identity management called 'Dr Balmer's AC2ID TestTM'. The approach is the most recent development of a model that was initially reported in Balmer and Soenen (1999). The revised model makes explicit what was implicit in the original ACID Test and, as such, accords perception, which in the

John M. T. Balmer

2001-01-01

440

M-Bonomial Coefficients and Their Identities  

ERIC Educational Resources Information Center

In this note, we introduce M-bonomial coefficients or (M-bonacci binomial coefficients). These are similar to the binomial and the Fibonomial (or Fibonacci-binomial) coefficients and can be displayed in a triangle similar to Pascal's triangle from which some identities become obvious.

Asiru, Muniru A.

2010-01-01

441

Ward Identity in Krein Space Quantization  

NASA Astrophysics Data System (ADS)

In the previous paper, Krein space quantization has been studied for QED (Forghan et al. in Ann. Phys. 327:2388, 2012). In this paper, the relation between the vertex function and the electron self energy has been studied, showing that the Ward identity is correct for Krein space quantization.

Forghan, B.

2013-09-01

442

Identity and Engagement for Professional Formation  

ERIC Educational Resources Information Center

Students enter university with ideas about their future professions. In some disciplines, the profession and the nature of professional work are well understood, while in other areas, they are more opaque. The authors investigate the ways in which students develop a sense of identity with their profession, how the nature of the profession impacts…

Reid, Anna; Dahlgren, Lars Owe; Petocz, Peter; Dahlgren, Madeleine Abrandt

2008-01-01

443

Infusing Catholic Identity throughout the Campus Community  

ERIC Educational Resources Information Center

This article, originally presented as a plenary address at the Association of Catholic Colleges and Universities 2011 Annual Meeting, addresses a bottom-up methodology for infusing the spirit of Catholic identity more deeply throughout a campus community. The author begins with an exploration of some theoretical underpinnings of this approach and…

Miller, Amata

2011-01-01

444

FUSION OF MULTIPLE FEATURES FOR IDENTITY ESTIMATION  

Microsoft Academic Search

In a visual surveillance application where a network of cameras is used to observe many people, there are numerous situations where the consistent identification of a person is an important component in the system. There are many approaches to describing the appearance of a person. In this paper, we examine a combination of two identity descriptors: standard MPEG-7 color descriptors,

J. Annesley; V. Leung; A. Colombo; J. Orwell; S. A. Velastin

445

China's Identity as a Major Power  

Microsoft Academic Search

China has a conflicted identity as a major power—but few nations have had as extensive, animated, and diverse domestic discourse about their potential and roles as a major power, as has occurred in China over the past decade. Official, semi-official, and unofficial circles in China all actively debate the roles, opportunities, dangers, risks, and responsibilities of being a major power.

David Shambaugh

446

Resisting Surveillance: Identity and Implantable Microchips  

Microsoft Academic Search

Surveillance technologies and centralized databases are threatening personal privacy and freedom. Radio Frequency Identification (RFID) microchip technology is one of several potential human tracking and authentication systems. The author's interactive art installation Pop! Goes the Weaselaims to explore opportunities for resisting surveillance by altering underlying assumptions concerning identity. Viewers are encouraged to experiment with resistance by avoiding access control, intervening

Nancy Nisbet

2004-01-01

447

Ptolemy's Theorem and Familiar Trigonometric Identities.  

ERIC Educational Resources Information Center

Integrates the sum, difference, and multiple angle identities into an examination of Ptolemy's Theorem, which states that the sum of the products of the lengths of the opposite sides of a quadrilateral inscribed in a circle is equal to the product of the lengths of the diagonals. (MDH)

Bidwell, James K.

1993-01-01

448

Itineraries of Identity in Undergraduate Science  

ERIC Educational Resources Information Center

Building on recent linguistic-anthropological work that investigates the temporalities of educational processes, the article examines how a marginalized classroom identity is interactionally formed over time in an undergraduate chemistry laboratory. The analysis demonstrates how social marginalization is enacted along multiple temporal scales via…

Bucholtz, Mary; Barnwell, Brendan; Skapoulli, Elena; Lee, Jung-Eun Janie

2012-01-01

449

Constructing Identities in Multicultural Learning Contexts  

ERIC Educational Resources Information Center

In this article we examine two concepts that aid our understanding of processes of identification in multiethnic schools. The first concept focuses on the complementarity of "three processes of identity" (identifying the other, being identified, and self-identification). This is brought together with the concept of sociocultural coupling…

Crafter, Sarah; de Abreu, Guida

2010-01-01

450

Telling the Future: Narrating Urban Teaching Identities  

ERIC Educational Resources Information Center

This dissertation is a qualitative narrative study of preservice teachers' construction of urban teaching identities. While studies of urban teacher preparation highlight the need for teacher education programs to foster certain requisite knowledge, dispositions, attitudes, beliefs and skills, more studies are required to illuminate ways in which…

Lee, Marini Calette

2010-01-01

451

Review of Methods of Personal Identity Verification.  

National Technical Information Service (NTIS)

The report reviews methods of personal identity verification, particularly from the point of view of control of access to resources of value. After a brief survey of methods using tokens and/or passwords, the general principles of biometric methods are di...

W. L. Price

1986-01-01

452

Instant Messaging, Literacies, and Social Identities  

ERIC Educational Resources Information Center

This study examined the functions of Instant Messaging (IM) among seven youths who regularly used this digital technology in their daily lives. Grounded in theories of literacy as a social and semiotic practice, this research asked what functions IM served in participants' lives and how their social identities shaped and were shaped by this form…

Lewis, Cynthia; Fabos, Bettina

2005-01-01

453

Identical twins discordant for Kallmann's syndrome  

Microsoft Academic Search

A 20 year old male patient presented with lack of sexual development. On examination he was eunuchoidal and hypogonadal, and olfactory function testing showed he was anosmic. Biochemical investigations proved he was hypogonadotrophic. Kallmann's syndrome was therefore diagnosed. His appearance was very different from his alleged identical twin who had undergone a normal puberty and had normal plasma testosterone and

L J Hipkin; I F Casson; J C Davis

1990-01-01

454

Cultural Dialogue as Identity-Work  

ERIC Educational Resources Information Center

Migration is more than a geographical concept; rather, migration represents the social repositioning and cultural negotiation that take place across Home spaces (i.e., native and adopted countries, societies, and identity groups). With the physical relocation of migration come demands that migrants renegotiate and redefine the notion of H/home…

McLean, Cheryl A.

2011-01-01

455

Social Identity under Various Sociocultural Conditions  

ERIC Educational Resources Information Center

This article presents an empirical study of social identity. The purpose of the study is to make a comparative social and psychological analysis of the main characteristics of identification of college students enrolled in higher pedagogical institutions in three countries--Russia, Poland, and the Netherlands. The sample is comprised of college…

Ivanova, N. L.

2005-01-01

456

Speaker Identity Supports Phonetic Category Learning  

ERIC Educational Resources Information Center

Visual cues from the speaker's face, such as the discriminable mouth movements used to produce speech sounds, improve discrimination of these sounds by adults. The speaker's face, however, provides more information than just the mouth movements used to produce speech--it also provides a visual indexical cue of the identity of the speaker. The…

Mani, Nivedita; Schneider, Signe

2013-01-01

457

Ethnicity and Identity in Northeastern Oklahoma.  

ERIC Educational Resources Information Center

The origins of the Oklahoma Delaware reflect a complex history of migration, forced relocation, and punitive concentration. Though 36 tribal identities survive today, they are not of equal cultural coherence. Among the Delaware, there is no simple relation between socioeconomic status, level of acculturation, and factional membership. Rather, the…

Roark, Sue N.

458

Socio-Scientific Reasoning Influenced by Identities  

ERIC Educational Resources Information Center

Based on the comments by Lopez-Facal and Jimenez-Aleixandre, we consider that the cultural identities within Europe interfere with the question of the re-introduction of the Slovenian bear, generating a kind of "discrimination." When the SAQs under debate run against the students' systems of value, it seems that the closer the connection between…

Simonneaux, Laurence; Simonneaux, Jean

2009-01-01

459

Development of Attributes of Personal Identity.  

ERIC Educational Resources Information Center

Children in grades 1, 3, and 6 were asked to make judgments of their personal identity after three hypothetical transformations: self-other, personal continuity-past, and personal continuity-future. Repsonses were rated on an internal/external dimension. (Author/SS)

Mohr, Don M.

1978-01-01

460

Interethnic Romantic Relationships: Enacting Affiliative Ethnic Identities  

ERIC Educational Resources Information Center

Through in-depth interviews with respondents who were in interethnic relationships (N = 28), the authors extended and refined a new approach to mate selection based on affiliative ethnic identities (T. Jimenez, 2010). Rather than assimilation and a breakdown of ethnic group boundaries, they found that people pursued interethnic relationships…

Yodanis, Carrie; Lauer, Sean; Ota, Risako

2012-01-01

461

Identity Development in Gifted Children: Moral Sensitivity.  

ERIC Educational Resources Information Center

Discusses the development of moral sensitivity in gifted children and its impact on identity formation and development of the self. Also addresses how the phenomenon of asynchrony manifests in moral development of gifted children and the models they develop to give form to their moral concerns. (Author/CR)

Lovecky, Deidre V.

1997-01-01

462

Composing Identities: Films, Families and Racism  

ERIC Educational Resources Information Center

With this paper, I elaborate the use of the movies "American History X" and "Mi Familia" in classroom settings to highlight issues of ethnicity and the social construction of identity through families and communities. Taken together, these movies draw attention to racial geographies of Los Angeles but in very different ways. I contrast the ways…

Aitken, Stuart C.; Jokisch, Brad D.; Boone, Christopher G.

2003-01-01

463

The Effects of Varying Cosmological Parameters on Halo Substructure  

NASA Astrophysics Data System (ADS)

We investigate how different cosmological parameters, such as those delivered by the WMAP and Planck missions, affect the nature and evolution of the dark matter halo substructure. We use a series of flat ? cold dark matter cosmological N-body simulations of structure formation, each with a different power spectrum but with the same initial white noise field. Our fiducial simulation is based on parameters from the WMAP seventh year cosmology. We then systematically vary the spectral index, ns ; matter density, ? M ; and normalization of the power spectrum, ?8, for seven unique simulations. Across these, we study variations in the subhalo mass function, mass fraction, maximum circular velocity function, spatial distribution, concentration, formation times, accretion times, and peak mass. We eliminate dependence of subhalo properties on host halo mass and average the values over many hosts to reduce variance. While the "same" subhalos from identical initial overdensity peaks in higher ?8, ns , and ? m simulations accrete earlier and end up less massive and closer to the halo center at z = 0, the process of continuous subhalo accretion and destruction leads to a steady state distribution of these properties across all subhalos in a given host. This steady state mechanism eliminates cosmological dependence on all of the properties listed above except for subhalo concentration and V max, which remain greater for higher ?8, ns , and ? m simulations, and subhalo formation time, which remains earlier. We also find that the numerical technique for computing the scale radius and the halo finder that were used can significantly affect the concentration-mass relationship as computed for a simulation.

Dooley, Gregory A.; Griffen, Brendan F.; Zukin, Phillip; Ji, Alexander P.; Vogelsberger, Mark; Hernquist, Lars E.; Frebel, Anna

2014-05-01

464

TDR Using Autocorrelation and Varying-Duration Pulses  

NASA Technical Reports Server (NTRS)

In an alternative to a prior technique of time-domain-reflectometry (TDR) in which very short excitation pulses are used, the pulses have very short rise and fall times and the pulse duration is varied continuously between a minimum and a maximum value. In both the present and prior techniques, the basic idea is to (1) measure the times between the generation of excitation pulses and the reception of reflections of the pulses as indications of the locations of one or more defects along a cable and (2) measure the amplitudes of the reflections as indication of the magnitudes of the defects. In general, an excitation pulse has a duration T. Each leading and trailing edge of an excitation pulse generates a reflection from a defect, so that a unique pair of reflections is associated with each defect. In the present alternative technique, the processing of the measured reflection signal includes computation of the autocorrelation function R(tau) identical with fx(t)x(t-tau)dt where t is time, x(t) is the measured reflection signal at time t, and taus is the correlation interval. The integration is performed over a measurement time interval short enough to enable identification and location of a defect within the corresponding spatial interval along the cable. Typically, where there is a defect, R(tau) exhibits a negative peak having maximum magnitude for tau in the vicinity of T. This peak can be used as a means of identifying a leading-edge/trailing-edge reflection pair. For a given spatial interval, measurements are made and R(tau) computed, as described above, for pulse durations T ranging from the minimum to the maximum value. The advantage of doing this is that the effective signal-to-noise ratio may be significantly increased over that attainable by use of a fixed pulse duration T.

Lucena, Angel; Mullinex, Pam; Huang, PoTien; Santiago, Josephine; Mata, Carlos; Zavala, Carlos; Lane, John

2008-01-01

465

The Relationship Between Identity and Intimacy in Early Adulthood  

Microsoft Academic Search

This investigation examined the relationship between identity and intimacy in young adults and determined whether prior measures of identity and intimacy status would be useful with subjects in this age range. Fifty 22- to 35-year-old men and women participated in structured interviews designed to assess identity and intimacy status. They also completed the Identity Status Incomplete Sentences Blank for Adults

Patricia M. Raskin

1986-01-01

466

Identity Education: A Conceptual Framework for Educational Researchers and Practitioners  

Microsoft Academic Search

This article presents the concept of identity education (IdEd) referring to the purposeful involvement of educators with students’ identity-related processes or contents. We discuss why educators may consider identity important to the realization of educational goals and choose to target aspects of students’ identity in their pedagogical practice. We offer a broad theoretical framework that organizes and focuses the extensive

ELLI P. SCHACHTER; YISRAEL RICH

2011-01-01

467

Student Beliefs and Attitudes about Authorial Identity in Academic Writing  

ERIC Educational Resources Information Center

Authorial identity is the sense a writer has of themselves as an author and the textual identity they construct in their writing. This article describes two studies exploring psychology students' authorial identity in academic writing. A qualitative focus group study with 19 students showed that authorial identity was largely unfamiliar to…

Pittam, Gail; Elander, James; Lusher, Joanne; Fox, Pauline; Payne, Nicola

2009-01-01

468

Racial and Ethnic Identity. Psychological Development and Creative Expression.  

ERIC Educational Resources Information Center

Racial and ethnic identity must be understood as an important determinant of the creative process and social dynamics, as well as understood as individual psychology. This collection of papers examines identity issues in the following chapters: (1) "Roots and Routes: Black Identity as an Outernational Project" (Paul Gilroy); (2) "Identity as…

Harris, Herbert W., Ed.; And Others

469

Racial and Sexual Identities of Asian American Gay Men  

Microsoft Academic Search

This paper reports results of two studies about the racial and sexual identities of Asian American gay men. In the first study, 32 Asian American gay men completed measures assessing racial and sexual identity attitudes. Results suggested that Assimilationists had the most negative sexual identity attitudes, followed by Marginalists and Separationists, with Integrationists having the most positive sexual identity attitudes.

Y. Barry Chung; Dawn M. Szymanski

2007-01-01

470

Java Card Key Generation for Identity Based Systems  

Microsoft Academic Search

Identity based encryption and signature schemes are public key schemes where an identity, such as an arbitrary string like an email address or biometric data, is the basis for the public key. Identity Based Encryption requires the use of a Private Key Generator that creates an associated private key given a public key generated from the identity and a secret

Tom Dowling; Adam Duy

471

Racial-Ethnic Identity and Adjustment in Canadian Indigenous Adolescents  

ERIC Educational Resources Information Center

This study supported associations between three theoretically driven conceptualizations of racial and ethnic identity (REI; Multigroup Ethnic Identity Measure; Multidimensional Racial Identity Measure; Bicultural Identity Measure) and with adaptive functioning among Canadian indigenous adolescents in middle school to high school. Age differences…

Gfellner, Barbara M.; Armstrong, Helen D.

2013-01-01

472

Ethnic Identity in Young Adults from Three Ethnic Groups.  

ERIC Educational Resources Information Center

The theoretical basis of most studies of identity development is Erikson's theory, which proposes that the achievement of a personal identity is the central developmental task of adolescence. Although Erikson mentioned the role of culture, no research has examined ethnicity directly as a dimension of identity. This study examined ethnic identity

Phinney, Jean S.; Ambarsoom, Hamlet

473

Ethnic Identity in College Students from Four Ethnic Groups.  

ERIC Educational Resources Information Center

Examined ethnic identity search and commitment, importance of ethnicity as identity issue, and relationship of ethnic identity to self-esteem among college students (N=196). Found exploration of ethnic identity issues was higher among minority students, and ethnicity was rated more important to minority students. Self-esteem was related to…

Phinney, Jean S.; Alipuria, Linda Line

1990-01-01

474

Career and Personal Identity Synthesis in Professional Men and Women.  

ERIC Educational Resources Information Center

Since Erikson first explained identity synthesis for women as a single unitary pattern, identity synthesis for women leading different life styles has been shown to form separate and distinct patterns. These findings suggest that men's identity synthesis may also be more complex than a unitary process. Similarities and differences in identity

O'Connell, Agnes N.

475

Identity and Norm Diffusion in the Convention against Torture  

Microsoft Academic Search

Does state identity play a role in why governments enter into international agreements? Given the centrality of identity in the definition of norms, international agreements that incorporate norms should be especially likely to attract states with the relevant identities. To operationalize identity, we use the founding charters of international organizations. Region and domestic regime type are the most common forms

Jay Goodliffe; Darren Hawkins; James Raymond Vreeland

476

Investigating Projective Identity Trajectories for 21st Century Learning  

ERIC Educational Resources Information Center

In this article, the authors discuss the importance of studying identity in the context of 21st century learning. Identity is an evolving trajectory that is always in-flux or changing. In a fast changing 21st century, educators are recognizing the significance of identity work, in particular projective identity, as individuals participate in…

Hung, David; Jamaludin, Azilawati; Chen, Der-Thanq

2010-01-01

477

An Instrument to Measure Chickering's Vector of Identity.  

ERIC Educational Resources Information Center

Describes the construction of an instrument to measure identity, primarily based on Chickering's approach, i.e., the Erwin Identity Scale (EIS), designed to measure the three main concepts comprising identity: confidence, sexual identity, and conceptions about body and appearance. (Author)

Erwin, T. Dary; Delworth, Ursula

1980-01-01

478

[Necessary sites: identical duplication of living organisms].  

PubMed

The paper deals with the concept of the identity of living organisms, a concept used up until now very ambiguously. The discussion rests on the combination of two concepts, one proposed by Munzer (1993) and another derived from the considerations of Riedl (1975). The first is the proposal that the identity of living organisms depends on the properties of their elementary constituents, such as cells and tissues, and that these properties, in turn, depend on those of their DNA and RNA. It follows that the identity of a living organism remains constant or changes during life according to whether its DNA and RNA content also remains constant or changes. The second is the consideration that, during duplication of a cell population, the informational content of the population does not increase if the duplicated cells are identical (increase only of redundant DNA). On the other hand the informational content of the cell population increases if the duplicated cells are the result of a variation-selection process (increase of essential DNA). The changes of DNA and RNA content, occurring in the germinal cells during phylogenesis and in the somatic cells of the evolutionary systems during ontogenesis, lead, therefore, to the generation of new identities. Living organisms are suggested to reflect two types of identity, that of the deterministic and that of the evolutionary systems. Since the informational content of the deterministic systems (the essential DNA content) remains approximately constant during life, their identity also remains constant. The changes in the number of elementary constituents and cell volumes during the processes of hypertrophy and atrophy are accompanied only by changes in the amount of DNA (the redundant DNA). On the other hand the informational content of the evolutionary systems (the essential DNA), such as the brain-mind system, the immunological system and some receptor systems, undergo a marked increase during the ontogenic development: this leads to changes of identity of these systems. For example, in the immunological system the process of mutation and recombination of the DNA of the immunological cells leads to the generation of new proteins in the amount about 10,000 times larger than that produced through the decodification of the genome. Also the construction of the neural network, and of a number of synapses much larger than that of the neuronal cells, requires the generation of an amount of new information much larger than that contained in the genome. In short, the attribution of a double identity to living organisms reflects the simultaneous presence of systems developing either within strictly programmed limits or without programs and limits, say as closed or open projects. The difference between the two types of systems explains the different effects in the case of the transplants. The identity of the recipient of transplants is not altered in the case of transplants of a deterministic system but is so in case of transplants of evolutionary systems. There is now a widespread fear of the possibility of human cloning. It is argued that this fear is unjustified because a cloning process can never succeed in duplicating those parts which are essential for the characters of humans, namely those concerned with the properties of the evolutionary systems. PMID:12212445

Azzone, G F

2001-01-01

479

Memristive biosensors under varying humidity conditions.  

PubMed

We attempt to examine the potential of silicon nanowire memristors in the field of nanobiosensing. The memristive devices are crystalline Silicon (Si) Nanowires (NWs) with Nickel Silicide (NiSi) terminals. The nanowires are fabricated on a Silicon-on-Insulator (SOI) wafer by an Ebeam Lithography Technique (EBL) process that allows high resolution at the nanoscale. A Deep Reactive Ion Etching (DRIE) technique is used to define free-standing nanowires. The close alignment between Silicon (Si) and Nickel-Silicide (NiSi) terminals forms a Schottky-barrier at their junction. The memristive effect of the fabricated devices matches well with the memristor theory. An equivalent circuit reproducing the memristive effect in current-voltage (I-V) characteristics of our silicon nanowires is presented too. The memristive silicon nanowire devices are then functionalized with anti-human VEGF (Vascular Endothelial Growth Factor) antibody and I-V characteristics are examined for the nanowires prior to and after protein functionalization. The uptake of bio-molecules linked to the surface of the memristive NWs is confirmed by the increased voltage gap in the hysteresis curve. The effects of varying humidity conditions on the conductivity of bio-modified memristive silicon nanowires are deeply investigated. PMID:24594511

Puppo, Francesca; Dave, Akshat; Doucey, Marie-Agnès; Sacchetto, Davide; Baj-Rossi, Camilla; Leblebici, Yusuf; De Micheli, Giovanni; Carrara, Sandro

2014-03-01

480

Serotonin release varies with brain tryptophan levels  

NASA Technical Reports Server (NTRS)

This study examines directly the effects on serotonin release of varying brain tryptophan levels within the physiologic range. It also addresses possible interactions between tryptophan availability and the frequency of membrane depolarization in controlling serotonin release. We demonstrate that reducing tryptophan levels in rat hypothalamic slices (by superfusing them with medium supplemented with 100 microM leucine) decreases tissue serotonin levels as well as both the spontaneous and the electrically-evoked serotonin release. Conversely, elevating tissue tryptophan levels (by superfusing slices with medium supplemented with 2 microM tryptophan) increases both the tissue serotonin levels and the serotonin release. Serotonin release was found to be affected independently by the tryptophan availability and the frequency of electrical field-stimulation (1-5 Hz), since increasing both variables produced nearly additive increases in release. These observations demonstrate for the first time that both precursor-dependent elevations and reductions in brain serotonin levels produce proportionate changes in serotonin release, and that the magnitude of the tryptophan effect is unrelated to neuronal firing frequency. The data support the hypothesis that serotonin release is proportionate to intracellular serotonin levels.

Schaechter, Judith D.; Wurtman, Richard J.

1990-01-01

481

Dermatophyte susceptibility varies towards antimicrobial textiles.  

PubMed

Dermatophytoses are a widespread problem worldwide. Textiles in contact with infected skin can serve as a carrier for fungus propagation. Hitherto, it is unknown, whether antifungal textiles could contribute in controlling dermatophytes e.g. by disrupting the chain of infection. Testing of antimicrobial fabrics for their antifungal activities therefore is a fundamental prerequisite to assess the putative clinical relevance of textiles for dermatophyte prevention. Fabrics finished with either didecyldimethylammonium chloride (DDAC), poly-hexamethylenbiguanide, copper and two silver chloride concentrations were tested for their antifungal activity against Trichophyton rubrum, Trichophyton mentagrophytes and Candida albicans. To prove dermatophyte susceptibility towards the textiles, swatches were subjected to DIN EN 14199 (Trichophyton sp.) or DIN EN ISO 20743 (C.?albicans) respectively. In addition, samples were embedded, and semi-thin sections were analysed microscopically. While all samples showed a clear inhibition of C.?albicans, activity against Trichophyton sp. varied significantly: For example, DDAC completely inhibited T.?rubrum growth, whereas T.?mentagrophytes growth remained unaffected even in direct contact to the fibres. The results favour to add T.?mentagrophytes as a test organism in textile dermatophyte efficacy tests. Microscopic analysis of swatches allowed detailed evaluation of additional parameters like mycelium thickness, density and hyphae penetration depth into the fabric. PMID:21914005

Hammer, Timo R; Mucha, Helmut; Hoefer, Dirk

2012-07-01

482

Time-varying modeling of cerebral hemodynamics.  

PubMed

The scientific and clinical importance of cerebral hemodynamics has generated considerable interest in their quantitative understanding via computational modeling. In particular, two aspects of cerebral hemodynamics, cerebral flow autoregulation (CFA) and CO2 vasomotor reactivity (CVR), have attracted much attention because they are implicated in many important clinical conditions and pathologies (orthostatic intolerance, syncope, hypertension, stroke, vascular dementia, mild cognitive impairment, Alzheimer's disease, and other neurodegenerative diseases with cerebrovascular components). Both CFA and CVR are dynamic physiological processes by which cerebral blood flow is regulated in response to fluctuations in cerebral perfusion pressure and blood CO2 tension. Several modeling studies to date have analyzed beat-to-beat hemodynamic data in order to advance our quantitative understanding of CFA-CVR dynamics. A confounding factor in these studies is the fact that the dynamics of the CFA-CVR processes appear to vary with time (i.e., changes in cerebrovascular characteristics) due to neural, endocrine, and metabolic effects. This paper seeks to address this issue by tracking the changes in linear time-invariant models obtained from short successive segments of data from ten healthy human subjects. The results suggest that systemic variations exist but have stationary statistics and, therefore, the use of time-invariant modeling yields "time-averaged models" of physiological and clinical utility. PMID:24184697

Marmarelis, Vasilis Z; Shin, Dae C; Orme, Melissa; Rong Zhang

2014-03-01

483

Varying Collimation for Dark-Field Extraction  

PubMed Central

Although x-ray imaging is widely used in biomedical applications, biological soft tissues have small density changes, leading to low contrast resolution for attenuation-based x-ray imaging. Over the past years, x-ray small-angle scattering was studied as a new contrast mechanism to enhance subtle structural variation within the soft tissue. In this paper, we present a detection method to extract this type of x-ray scattering data, which are also referred to as dark-field signals. The key idea is to acquire an x-ray projection multiple times with varying collimation before an x-ray detector array. The projection data acquired with a collimator of a sufficiently high collimation aspect ratio contain mainly the primary beam with little scattering, while the data acquired with an appropriately reduced collimation aspect ratio include both the primary beam and small-angle scattering signals. Then, analysis of these corresponding datasets will produce desirable dark-field signals; for example, via digitally subtraction. In the numerical experiments, the feasibility of our dark-field detection technology is demonstrated in Monte Carlo simulation. The results show that the acquired dark field signals can clearly reveal the structural information of tissues in terms of Rayleigh scattering characteristics.

Wang, Ge; Cong, Wenxiang; Shen, Haiou; Zou, Yu

2009-01-01

484

Vector curvaton with varying kinetic function  

SciTech Connect

A new model realization of the vector curvaton paradigm is presented and analyzed. The model consists of a single massive Abelian vector field, with a Maxwell-type kinetic term. By assuming that the kinetic function and the mass of the vector field are appropriately varying during inflation, it is shown that a scale-invariant spectrum of superhorizon perturbations can be generated. These perturbations can contribute to the curvature perturbation of the Universe. If the vector field remains light at the end of inflation it is found that it can generate substantial statistical anisotropy in the spectrum and bispectrum of the curvature perturbation. In this case the non-Gaussianity in the curvature perturbation is predominantly anisotropic, which will be a testable prediction in the near future. If, on the other hand, the vector field is heavy at the end of inflation then it is demonstrated that particle production is approximately isotropic and the vector field alone can give rise to the curvature perturbation, without directly involving any fundamental scalar field. The parameter space for both possibilities is shown to be substantial. Finally, toy models are presented which show that the desired variation of the mass and kinetic function of the vector field can be realistically obtained, without unnatural tunings, in the context of supergravity or superstrings.

Dimopoulos, Konstantinos; Karciauskas, Mindaugas; Wagstaff, Jacques M. [Physics Department, Lancaster University, Lancaster LA1 4YB (United Kingdom)

2010-01-15

485

Filtration behavior of slurries with varying compressibilities  

SciTech Connect

A novel filtration apparatus allows simultaneous measurements of filtrate volume, hydraulic pressure and cake thickness using slurry volumes on the order of 100 cm/sup 3/. Differences in interparticle interactions were studied by varying the barium chloride concentration of 0.38-..mu..m polystyrene latex and filtering at pressures between 2 and 100 psi. Cakes formed from these slurries are highly compressible for concentrations between 0.01M and 0.10M, moderately compressible for the 0.005M concentration, and incompressible for the 0.001M concentration. Plots of filtrate volume versus cake thickness were linear for the incompressible cakes, whereas the compressible cakes showed significant deviations, which were pressure dependent. The pressure distribution for the incompressible cake was found to be essentially linear as predicted from the resistance plots assuming constant ..cap alpha.. and epsilon. For the highly compressible cakes, most of the pressure drop appears to occur near the cake/medium interface with only small changes occurring at the top of the cake.

Massuda, M.; Bridger, K.; Harvey, M.; Tiller, F.M.

1988-10-01

486

General dynamics of varying-alpha universes  

NASA Astrophysics Data System (ADS)

We introduce and study extensions of the varying alpha theory of Bekenstein-Sandvik-Barrow-Magueijo to allow for an arbitrary coupling function and self-interaction potential term in the theory. We study the full evolution equations without assuming that variations in alpha have a negligible effect on the expansion scale factor and the matter density evolution, as was assumed in earlier studies. The background Friedmann-Robertson-Walker cosmology of this model in the cases of zero and nonzero spatial curvature is studied in detail, using dynamical systems techniques, for a wide class of potentials and coupling functions. All the asymptotic behaviors are found, together with some new solutions. We study the cases where the electromagnetic parameter, zeta, is positive and negative, corresponding to magnetic and electrostatic energy domination in the nonrelativistic matter. In particular, we investigate the cases where the scalar field driving alpha variations has exponential and power-law self-interaction potentials and the behavior of theories where the coupling constant between matter and alpha variations is no longer a constant.

Barrow, John D.; Graham, Alexander A. H.

2013-11-01

487

Time-Varying Modeling of Cerebral Hemodynamics  

PubMed Central

The scientific and clinical importance of cerebral hemodynamics has generated considerable interest in their quantitative understanding via computational modeling. In particular, two aspects of cerebral hemodynamics, Cerebral Flow Autoregulation (CFA) and CO2 Vasomotor Reactivity (CVR), have attracted much attention because they are implicated in many important clinical conditions and pathologies (orthostatic intolerance, syncope, hypertension, stroke, vascular dementia, MCI, Alzheimer’s disease and other neurodegenerative diseases with cerebrovascular components). Both CFA and CVR are dynamic physiological processes by which cerebral blood flow is regulated in response to fluctuations in cerebral perfusion pressure and blood CO2 tension. Several modeling studies to date have analyzed beat-to-beat hemodynamic data in order to advance our quantitative understanding of CFA-CVR dynamics. A confounding factor in these studies is the fact that the dynamics of the CFA-CVR processes appear to vary with time (i.e. changes in cerebrovascular characteristics) due to neural, endocrine and metabolic effects. This paper seeks to address this issue by tracking the changes in linear time-invariant models obtained from short successive segments of data from 10 healthy human subjects. The results suggest that systemic variations exist but have stationary statistics and, therefore, the use of time-invariant modeling yields “time-averaged models” of physiological and clinical utility.

Marmarelis, Vasilis Z.; Shin, Dae C.; Orme, Melissa; Zhang, Rong

2014-01-01

488

Profiles of British Muslim identity: adolescent girls in Birmingham.  

PubMed

By asking students to fill in 10 statements beginning with 'I am...' and a further 10 statements beginning with 'I am not...' we constructed profiles of British Muslim ethnic and national identity. Participants were 108 British Muslim girls of mean age 12.6 years studying in a single sex girls' school in Birmingham, UK. Using content analysis we found that some adolescent girls are rooted only in their personal identity. Others are rooted in their social identity. We found a number of major categories: rooted in ethnic identity only, rooted in ethnic identity but differentiating self from other groups, rooted in bicultural identity, rooted in national identity and confused ethnic and national identity. Significantly a number of participants were concerned to transcend group identities and described themselves as 'not racist' or 'not prejudiced'. A model of ethnic and national identity is presented incorporating rootedness, differentiation, confusion and transcendence. PMID:19683339

Hutnik, Nimmi; Street, Rebecca Coran

2010-02-01

489

Psychological factors predicting identity organization in Latino gay men  

Microsoft Academic Search

Though some researchers have explored the identity development dynamics of racial\\/ethnic and gay\\/lesbian persons, few have done so in the context of a specific identity model. The investigator in this quantitative study examined the identity organization\\/resolution of Latino gay men, a population with multiple-oppressed identities, in the context of the Multidimensional Identity Model (MIM). Data were gathered using a \\

Henry Michael Koegel

1996-01-01

490

Development and Validation of a Q-Sort Measure of Identity Processing Style: The Identity Processing Style Q-Sort  

ERIC Educational Resources Information Center

Identity styles represent strategies individuals use to explore identity-related issues. Berzonsky (Berzonsky, M. D. (1992). Identity style and coping strategies. "Journal of Personality, 60", 771-788) identified three styles: informational, normative, and diffuse. In three studies, this paper presents (a) the identity processing style Q-sort…

Pittman, Joe F.; Kerpelman, Jennifer L.; Lamke, Leanne K.; Sollie, Donna L.

2009-01-01

491

The Relation of Ethnic Identity, Racial Identity, and Race-Related Stress among African American College Students  

ERIC Educational Resources Information Center

The purpose of this study was to explore to what extent ethnic identity and racial identity are related constructs among African American college students by examining (a) the association of racial identity to ethnic identity and (b) the relative and unique contribution of both constructs to race-related stress. Participants were 140 college…

Johnson, Samon C.; Arbona, Consuelo

2006-01-01

492

Revision and extension of a multidimensional measure of sexual minority identity: the Lesbian, Gay, and Bisexual Identity Scale.  

PubMed

Two studies were conducted to investigate a revised and extended version of the Lesbian and Gay Identity Scale (Mohr & Fassinger, 2000): the 27-item Lesbian, Gay, and Bisexual Identity Scale (LGBIS). This revision features more inclusive and less stigmatizing language than the previous version and includes 2 new subscales assessing identity affirmation and centrality. In Study 1, an exploratory factor analysis (n = 297) and a confirmatory factor analysis (n = 357) supported an 8-factor solution assessing acceptance concerns, concealment motivation, identity uncertainty, internalized homonegativity, difficulty with the identity development process, identity superiority, identity affirmation, and identity centrality. Predicted associations with measures of identity-related constructs and psychosocial functioning provided preliminary validity evidence for LGBIS scores in a college student population. Study 2 (N = 51) provided evidence of the test-retest and internal consistency reliability of LGBIS scores. These studies suggest that the LGBIS may offer researchers an efficient means of assessing multiple dimensions of sexual orientation minority identity. PMID:21319899

Mohr, Jonathan J; Kendra, Matthew S

2011-04-01

493

Physics career intentions: The effect of physics identity, math identity, and gender  

NASA Astrophysics Data System (ADS)

Although nearly half of high school physics students are female, only 21% of physics bachelor's degrees are earned by women. Using data from a national survey of college students in introductory English courses (on science-related experiences, particularly in high school), we examine the influence of students' physics and math identities on their choice to pursue a physics career. Males have higher math and physics identities than females in all three dimensions of our identity framework. These dimensions include: performance/competence (perceptions of ability to perform/understand), recognition (perception of recognition by others), and interest (desire to learn more). A regression model predicting students' intentions to pursue physics careers shows, as expected, that males are significantly more likely to choose physics than females. Surprisingly, however, when physics and math identity are included in the model, females are shown to be equally likely to choose physics careers as compared to males.

Lock, Robynne M.; Hazari, Zahra; Potvin, Geoff

2013-01-01

494

Identity Processing Styles and Psychosocial Balance during Early and Middle Adulthood: The Role of Identity in Intimacy and Generativity  

Microsoft Academic Search

Identity styles and Eriksonian psychosocial balance were examined in young adults (N = 163; 64.4% women) and middle-aged adults (N = 132; 51.5% women). Participants completed self-report measures of identity styles (informational, normative, and diffuse-avoidant),\\u000a identity commitment, and psychosocial balance (identity, intimacy, and generativity). Different patterns of psychosocial balance\\u000a were found for each identity style, with largely consistent findings across age groups. The diffuse-avoidant

Sherry L. BeaumontMichael; Michael M. Pratt

495

Cosmology with Time-Varying G  

NASA Astrophysics Data System (ADS)

It is shown that a Universe with a time-varying gravitational “constant” G necessarily implies creation if the rest mass of matter particles m p is constant. In this case, from Einstein's field equations, the conditions for energy-momentum propagation are ? ·( GT ? v ) from which matter and photon propagation equations are derived. Free matter particle propagation is not affected by creation that is given by GN pmp=const, where N p is the number of matter particles within a proper volume. This relation introduces explicitly the rest mass of the Universe into the field equations. Free photon propagation is affected by creation that is given by GT ? v R=const, where N ? is the number of photons within a proper volume, which is the cosmic red shift law. Conservation of the cosmic background photon distribution determines photon creation as G 3 N {?/4}. The results are applied to the case G ? t -1 equivalent to N p ÷ t. It is found that at an age t=1, 0-40 t o, of the order light takes to travel a proton size, Planck's units become of the order of the proton's mass m p, size r p, and time r p/c. Hence, matter particles at this age are quantum black holes. Evaporation of these quantum black holes at this age gives a background blackbody radiation that, red shifted to present time t 0, gives the present cosmic microwave background. A cosmological model of the Friedmann type is constructed. The red shift versus distance relation is derived taking into account creation. Using a Hubble's constant H obs=50 km sec-1 Mpc-1 and a deceleration parameter q obs=1.0 the model is of the type k=1 and gives a present age t 0=6.81×109 yr, consistent with Uranium model ages. Thus, the three results for the age of the Universe, i.e., radioactive decay, Hubble's constant, and stellar evolution are brought together in this creation model. The matter-dominated era occurs for t>7.6×10-3 t 0, while the radiation-dominated era occurs for 7.6×10-3 t o> t>10-40 t o. The origin of the Universe is placed at this last limit, which is Planck's time at the corresponding G, consisting of quantum black holes at a temperature Ti?=3×1011K.

Alfonso-Faus, Antonio

1986-03-01

496

STEM Professionals Entering Teaching: Navigating Multiple Identities  

NASA Astrophysics Data System (ADS)

In this qualitative study, we identify the complexity of the transitioning identities of four STEM career changers to better inform teacher education programs on how to be more mindful of the needs of this population as they return to the life of a student again on their path toward a new career in teaching. Findings suggest the career changers relied upon their identities from their previous careers to engage students in science; however, support is needed, both in terms of the coursework and returning to be a student again. Additionally, support is necessary for intervening in difficult placements and work situations as these STEM career changers make the transition to their newly chosen career of teaching science.

Grier, Jeanne M.; Johnston, Carol C.

2012-02-01

497

Identity-Based Authentication for Cloud Computing  

NASA Astrophysics Data System (ADS)

Cloud computing is a recently developed new technology for complex systems with massive-scale services sharing among numerous users. Therefore, authentication of both users and services is a significant issue for the trust and security of the cloud computing. SSL Authentication Protocol (SAP), once applied in cloud computing, will become so complicated that users will undergo a heavily loaded point both in computation and communication. This paper, based on the identity-based hierarchical model for cloud computing (IBHMCC) and its corresponding encryption and signature schemes, presented a new identity-based authentication protocol for cloud computing and services. Through simulation testing, it is shown that the authentication protocol is more lightweight and efficient than SAP, specially the more lightweight user side. Such merit of our model with great scalability is very suited to the massive-scale cloud.

Li, Hongwei; Dai, Yuanshun; Tian, Ling; Yang, Haomiao

498

Learning Assistants' Development of Physics (Teacher) Identity  

NSDL National Science Digital Library

The physics department at Texas State University is developing a Learning Assistant (LA) program with reform-based instructional changes in our introductory course sequences. We are interested in how participation in the LA program influences LAsâ identity both as physics students and as physics teachers; in particular, how being part of the LA community changes participantsâ self-concepts and their day-to-day practice. We analyze written artifacts from program applications, reflections, and evaluations; our analysis of self-concepts is informed by the identity framework developed by Hazari and colleagues [1,2] and our analysis of practice is informed by Lave and Wengerâs theory of Communities of Practice [3,4]. Preliminary experience suggests that engagement in the collaborative physics education community elements of the LA program blurs the distinction between learner and teacher practice and increases LAsâ engagement in negotiation of meaning in both contexts.

Close, Eleanor W.; Conn, Jessica; Close, Hunter G.

2014-01-30

499

Remote secure proof of identity using biometrics  

SciTech Connect

Biometric measurements derived from finger- or voiceprints, hand geometry, retinal vessel pattern and iris texture characteristics etc. can be identifiers of individuals. In each case, the measurements can be coded into a statistically unique bit-string for each individual. While in electronic commerce and other electronic transactions the proof of identity of an individual is provided by the use of either public key cryptography or biometric data, more secure applications can be achieved by employing both. However the former requires the use of exact bit patterns. An error correction procedure allows us to successfully combine the use of both to provide a general procedure for remote secure proof of identity using a generic biometric device. One such procedure has been demonstrated using a device based on hand geometry.

Sengupta, S. K.; Pearson, P.; Strait, R.S.

1997-06-10

500

Sensor-fusion-based biometric identity verification  

SciTech Connect

Future generation automated human biometric identification and verification will require multiple features/sensors together with internal and external information sources to achieve high performance, accuracy, and reliability in uncontrolled environments. The primary objective of the proposed research is to develop a theoretical and practical basis for identifying and verifying people using standoff biometric features that can be obtained with minimal inconvenience during the verification process. The basic problem involves selecting sensors and discovering features that provide sufficient information to reliably verify a person`s identity under the uncertainties caused by measurement errors and tactics of uncooperative subjects. A system was developed for discovering hand, face, ear, and voice features and fusing them to verify the identity of people. The system obtains its robustness and reliability by fusing many coarse and easily measured features into a near minimal probability of error decision algorithm.

Carlson, J.J.; Bouchard, A.M.; Osbourn, G.C.; Martinez, R.F.; Bartholomew, J.W. [Sandia National Labs., Albuquerque, NM (United States); Jordan, J.B.; Flachs, G.M.; Bao, Z.; Zhu, L. [New Mexico State Univ., Las Cruces, NM (United States). Electronic Vision Research Lab.

1998-02-01