177,889 research outputs found
Transient left ventricular apical ballooning-a novel acute cardiac syndrome
No full textK.K. Talwar and R. Mahajanhttp://www.scopus.com/record/display.url?eid=2-s2.0-34047181686&origin=resultslist&sort=plf-f&src=s&st1=Transient+left+ventricular+apical+ballooning-a+novel+acute+cardiac+syndrome&sid=kzl-CFUTuhFV9BpaZ5NhuoM%3a80&sot=b&sdt=b&sl=90&s=TITLE-ABS-KEY%28Transient+left+ventricular+apical+ballooning-a+novel+acute+cardiac+syndrome%29&relpos=0&relpos=0&searchTerm=TITLE-ABS-KEY(Transient left ventricular apical ballooning-a novel acute cardiac syndrome
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Reordering buffers for general metric spaces
No full textIn the reordering buffer problem, we are given an input sequence of requests for service each of which corresponds to a point in a metric space. The cost of serving the requests heavily depends on the processing order. When serving a request the cost is equal to the distance, in the metric space, between this request and the previously served request. A reordering buffer with storage capacity k can be used to reorder the input sequence in a restricted fashion so as to construct an output sequence with lower service cost. This simple and universal framework is useful for many applications in computer science and economics, e. g., disk scheduling, rendering in computer graphics, or painting shops in car plants.
In this paper, we design online algorithms for the reordering buffer problem where the goal is to minimize the total cost. Our main result is a strategy with a polylogarithmic competitive ratio for general metric spaces. Previous work on the reordering buffer problem only considered very restricted metric spaces. We obtain our result by first developing a deterministic algorithm for weighted trees whose competitive ratio depends on k and the hop-diameter of the tree. Then we show how to improve this competitive ratio to O(log2 k) for metric spaces that correspond to hierarchically well-separated trees. Combining this result with the results on the probabilistic approximation of arbitrary metrics by tree metrics due to Fakcharoenphol, Rao, and Talwar, we obtain a randomized strategy for general metric spaces that achieves a competitive ratio of O(log2 k · log n) in expectation against an oblivious adversary. Here n denotes the number of distinct points in the metric space. Note that the length of the input sequence can be much larger than n
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
The effects of co-channel interference on spatial diversity techniques
No full textThe authors would like to thank the research staffs in Intel
Korea R&D Center (iKRC) for system level simulation results
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Infant-parent attachment and lie-telling in young children: the Generation R study
No full textThis project aims to investigate how infant-parent attachment is related to lie-telling in young children. Data of the Generation R study will be used, including observed infant-parent attachment (Strange Situation Procedure) at 14 months, and observed lie-telling behaviour at 4 years of age.
Parents who provide consistently responsive and sensitive care allow their infants to learn that their parents will be available in time of stress and these infants are more likely to develop a secure attachment relationship with their parents (Ainsworth et al., 1978). A secure attachment relationship provides infants with a mechanism to regulate stressful stimuli (Bowlby, 1969). However, if parents are inconsistently sensitive or consistently insensitive infants can develop an insecure attachment relationship with their parents. Parent-infant attachment quality relates to many social-cognitive outcomes in later life (e.g., Ding et al., 2014; Ranson & Urichuk, 2008). However, it remains unknown whether parent-infant attachment quality is related to the emergence of lie-telling in childhood.
Telling a lie involves making a false statement with the intention to create a false belief for the target (Lee, 2013). In adults, there is an association between attachment and lie-telling with insecure attachment relating to increased frequency of lie-telling (Cole, 2001; Ein-Dor et al., 2017; Elaad et al., 2012; Ennis et al., 2008; Gillath et al., 2010; Warr, 2007). However, there is (currently) no evidence whether such an association is already present in early childhood when children tell their first lies. Moreover, lie-telling in early childhood is not unequivocally negative. The emergence of lie-telling can also be considered as an important and normative advancement in social-cognitive development (Talwar & Crossman, 2011, 2022). Attachment may thus be related to (the emergence of) lie-telling in early childhood in two opposing ways: (1) insecure attachment could be a precursor of greater frequency of lie-telling, similar to the associations found in adulthood (i.e., Cole, 2001; Ein-Dor et al., 2017; Ennis et al., 2008; Gillath et al., 2010); or (2) secure attachment could be a precursor of greater frequency of lie-telling, when the ability to tell lies is considered as a sign of advancement in cognitive development in early childhood. Both frameworks will be explained below and result in contrasting hypotheses.
Lie-telling is considered as one of the first covert antisocial behaviours in young children and might be the building block of other antisocial behaviours that develop later (Stouthamer-Loeber, 1986). Furthermore, lie-telling might obstruct the development of important prosocial skills like the forming of close relationships (Stouthamer-Loeber, 1986). In line, attachment anxiety in adults was related to increased frequency of lying to strangers, best friends (Ennis et al., 2008), and romantic partner (Cole, 2001), while attachment avoidance was related to increased lying to romantic partner only (Cole, 2001; Ennis et al., 2008). Similarly, attachment insecurity is related to dishonesty (i.e., lying and cheating; Gillath et al., 2010), and good liars and cheaters in a lab game were more likely to be insecurely attached (Ein-Dor et al., 2017). Adolescents who lied more to their parents, reported decreased feelings of attachments to their parents and there was a negative relationship between lie-telling and parent-child (Warr, 2007). Based on these studies, we can hypothesize that insecure attachment in infancy relates to increased lie-telling and cheating in early childhood.
In contrast, the emergence of lie-telling in early childhood has been described to be an indication of normative social-cognitive development and lying behaviour as a form of “theory-of-mind in action” (Talwar & Crossman, 2011, 2022). Learning how to lie or deceive is a cognitive skill which relates to the development of other cognitive skills such as executive functions and theory of mind (Heyman et al., 2013; Talwar & Crossman, 2011). Children learn to tell lies around 2 to 4 years of age (e.g., Evans & Lee, 2013; Heyman et al., 2020; Leduc et al., 2017; Lewis et al., 1989; Polak & Harris, 1999; Talwar & Lee, 2002; Talwar et al., 2007, 2019; Williams et al., 2017). Evidence of lie-telling in preschool-aged children might reflect positive cognitive development (or even a cognitive head start). While there is plenty of evidence that improvement in executive functions are related to improved lie-telling behaviour in early childhood (Ding et al., 2015, 2018; Evans et al., 2011; Fu et al., 2018; Leduc et al., 2017; Ma et al., 2015; Nagar et al., 2019; O’Connor et al., 2020; Sai et al., 2020; Talwar & Lee, 2008; Williams et al., 2017; Zhao et al., 2021), there is also evidence that secure attachment is related to improved executive function in the same period (Bernier et al., 2012, 2015; Matte-Gagné et al., 2018; Regueiro et al., 2020). Based on these studies, secure attachment in infancy relates to increased lie-telling in early childhood.
In short, we aim to investigate the relation between infant-parent attachment quality and the emergence of lie-telling in early childhood using longitudinal data from a population-based cohort study. We have two contrasting hypotheses; (1) insecure attachment at 14 months relates to more lie-telling behaviour at age 4 or (2) secure attachment relates to more lie-telling behaviour at age 4. There are no expectations on whether and how cheating and attachment are related. Our study will shed light on the question whether lie-telling behaviour in early childhood should be considered a precursor of antisocial behaviour or a sign of social-cognitive advancement
Letter from R. R. Zellick, Assistant Trust Officer, Anglo California National Bank of San Francisco, to Joseph R. Goodman, October 2, 1942
No full textLetter from R. R. Zellick, Assistant Trust Officer at The Anglo California National Bank of San Francisco, to Joseph R. Goodman, regarding property owned by Dave Tatsuno. Zellick mentions a dispute between current tenants and Tatsuno, and that Tatsuno has asked Goodman to help locate trustworthy tenants.Personal correspondence, organizational records, government documents, publications, and other papers created or collected by Joseph R. Goodman documenting the forced removal and incarceration of Japanese Americans during World War II, as well as organized resistance to incarceration. Included in the collection are records of the Japanese Young Men's Christian Association and the Japanese American Citizens' League in San Francisco, including papers of the Japanese YMCA's executive secretary Lincoln Kanai; Sakai family papers; Goodman's correspondence to and from Japanese American incarcerees, organizations opposing forced removal and incarceration of Japanese Americans, the War Relocation Authority, and others; publications, photographs, and ephemera from the Topaz Relocation Center, where Goodman taught high school; War Relocation Authority records and publications; and newspaper clippings, pamphlets, and reports about forced removal and incarceration created by various government, religious, and civic organizations, in California and nationwide
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Liftings for noncomplete probability spaces
No full textThe current state of knowledge concerning liftings for noncomplete probability spaces is discussed. This is a somewhat expanded version of the author's talk given at the 1991 Summer Conference on General Topology and Applications in Honor of Mary Ellen Rudin and Her Work.PT: S; CR: BURKE MR, IN PRESS P AM MATH S BURKE MR, 1991, ISRAEL J MATH, V73, P33 BURKE MR, 1992, ISRAEL J MATH, V79, P289 CARLSON T, THEOREM LIFTING CHRISTENSEN JPR, 1974, TOPOLOGY BOREL STRUC FREMLIN DH, 1989, HDB BOOLEAN ALGEBRAS, P877 INOESCUTULCEA A, 1966, 5TH P BERK S MATH ST, V2 IONESCUTULCEA A, 1967, CONTRIBUTIONS PROB 1, P63 IONESCUTULCEA A, 1969, TOPICS THEORY LIFTIN JECH TJ, 1978, SET THEORY JOHNSON RA, 1980, P AM MATH SOC, V80, P234 JUST W, IN PRESS T AM MATH S KUPKA J, 1983, INDIANA U MATH J, V32, P717 LOSERT V, 1983, LNM, V1080, P95 MAHARAM D, 1958, P AM MATH SOC, V9, P987 SHELAH S, 1983, ISRAEL J MATH, V45, P90 TALAGRAND M, 1982, P AM MATH SOC, V84, P379 VONNEUMANN J, 1931, CRELLES J MATH, V165, P109; NR: 18; TC: 0; J9: ANN N Y ACAD SCI; PG: 4; GA: BZ86BSource type: Electronic(1
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