2,011 research outputs found
Growth Begins from Within: How Internal Transparency Influences Organizational Learning
Ample research exists that focuses on organizational learning in the context of program efficiency and outcomes, and organizational transparency in the context of governance and compliance. The purpose of this research is to further explore the relationship between organizational learning culture and the commitment to internal transparency, specifically pertaining to the internal members across multiple levels of an organization. This paper includes a literary review of previous research, an outline for the methodology used for this research, qualitative data analysis of 10 expert interviews, a discussion of the results and findings, and the exploration of present and future implications and recommendations. The resulting themes that emerged from the research include: a disconnected perception between executive leadership and non-managerial members regarding transparency and organizational learning, the inconsistent practice for accountability across multiple organizational levels, and the inconsistent shifts for prioritization that impede stable cultural growth. From these findings, an outline model is adapted for incorporating internal transparency into the development of organizational learning culture
Automated Storytelling via Causal, Commonsense Plot Ordering
Automated story plot generation is the task of generating a coherent sequence
of plot events. Causal relations between plot events are believed to increase
the perception of story and plot coherence. In this work, we introduce the
concept of soft causal relations as causal relations inferred from commonsense
reasoning. We demonstrate C2PO, an approach to narrative generation that
operationalizes this concept through Causal, Commonsense Plot Ordering. Using
human-participant protocols, we evaluate our system against baseline systems
with different commonsense reasoning reasoning and inductive biases to
determine the role of soft causal relations in perceived story quality. Through
these studies we also probe the interplay of how changes in commonsense norms
across storytelling genres affect perceptions of story quality.Comment: AAAI-21 Camera Ready Versio
Bringing Stories Alive: Generating Interactive Fiction Worlds
World building forms the foundation of any task that requires narrative
intelligence. In this work, we focus on procedurally generating interactive
fiction worlds---text-based worlds that players "see" and "talk to" using
natural language. Generating these worlds requires referencing everyday and
thematic commonsense priors in addition to being semantically consistent,
interesting, and coherent throughout. Using existing story plots as
inspiration, we present a method that first extracts a partial knowledge graph
encoding basic information regarding world structure such as locations and
objects. This knowledge graph is then automatically completed utilizing
thematic knowledge and used to guide a neural language generation model that
fleshes out the rest of the world. We perform human participant-based
evaluations, testing our neural model's ability to extract and fill-in a
knowledge graph and to generate language conditioned on it against rule-based
and human-made baselines. Our code is available at
https://github.com/rajammanabrolu/WorldGeneration
The Politics of the Debate over the Court of Final Appeal in Hong Kong
published_or_final_versio
Towards Fairness in Personalized Ads Using Impression Variance Aware Reinforcement Learning
Variances in ad impression outcomes across demographic groups are
increasingly considered to be potentially indicative of algorithmic bias in
personalized ads systems. While there are many definitions of fairness that
could be applicable in the context of personalized systems, we present a
framework which we call the Variance Reduction System (VRS) for achieving more
equitable outcomes in Meta's ads systems. VRS seeks to achieve a distribution
of impressions with respect to selected protected class (PC) attributes that
more closely aligns the demographics of an ad's eligible audience (a function
of advertiser targeting criteria) with the audience who sees that ad, in a
privacy-preserving manner. We first define metrics to quantify fairness gaps in
terms of ad impression variances with respect to PC attributes including gender
and estimated race. We then present the VRS for re-ranking ads in an impression
variance-aware manner. We evaluate VRS via extensive simulations over different
parameter choices and study the effect of the VRS on the chosen fairness
metric. We finally present online A/B testing results from applying VRS to
Meta's ads systems, concluding with a discussion of future work. We have
deployed the VRS to all users in the US for housing ads, resulting in
significant improvement in our fairness metric. VRS is the first large-scale
deployed framework for pursuing fairness for multiple PC attributes in online
advertising.Comment: 11 pages, 7 figure, KDD 202
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Pan-viral serology implicates enteroviruses in acute flaccid myelitis.
Since 2012, the United States of America has experienced a biennial spike in pediatric acute flaccid myelitis (AFM)1-6. Epidemiologic evidence suggests non-polio enteroviruses (EVs) are a potential etiology, yet EV RNA is rarely detected in cerebrospinal fluid (CSF)2. CSF from children with AFM (n = 42) and other pediatric neurologic disease controls (n = 58) were investigated for intrathecal antiviral antibodies, using a phage display library expressing 481,966 overlapping peptides derived from all known vertebrate and arboviruses (VirScan). Metagenomic next-generation sequencing (mNGS) of AFM CSF RNA (n = 20 cases) was also performed, both unbiased sequencing and with targeted enrichment for EVs. Using VirScan, the viral family significantly enriched by the CSF of AFM cases relative to controls was Picornaviridae, with the most enriched Picornaviridae peptides belonging to the genus Enterovirus (n = 29/42 cases versus 4/58 controls). EV VP1 ELISA confirmed this finding (n = 22/26 cases versus 7/50 controls). mNGS did not detect additional EV RNA. Despite rare detection of EV RNA, pan-viral serology frequently identified high levels of CSF EV-specific antibodies in AFM compared with controls, providing further evidence for a causal role of non-polio EVs in AFM
Genomic and serologic characterization of enterovirus A71 brainstem encephalitis
OBJECTIVE: In 2016, Catalonia experienced a pediatric brainstem encephalitis outbreak caused by enterovirus A71 (EV-A71). Conventional testing identified EV in the periphery but rarely in CSF. Metagenomic next-generation sequencing (mNGS) and CSF pan-viral serology (VirScan) were deployed to enhance viral detection and characterization. METHODS: RNA was extracted from the CSF (n = 20), plasma (n = 9), stool (n = 15), and nasopharyngeal samples (n = 16) from 10 children with brainstem encephalitis and 10 children with meningitis or encephalitis. Pathogens were identified using mNGS. Available CSF from cases (n = 12) and pediatric other neurologic disease controls (n = 54) were analyzed with VirScan with a subset (n = 9 and n = 50) validated by ELISA. RESULTS: mNGS detected EV in all samples positive by quantitative reverse transcription polymerase chain reaction (qRT-PCR) (n = 25). In qRT-PCR-negative samples (n = 35), mNGS found virus in 23% (n = 8, 3 CSF samples). Overall, mNGS enhanced EV detection from 42% (25/60) to 57% (33/60) (p-value = 0.013). VirScan and ELISA increased detection to 92% (11/12) compared with 46% (4/12) for CSF mNGS and qRT-PCR (p-value = 0.023). Phylogenetic analysis confirmed the EV-A71 strain clustered with a neurovirulent German EV-A71. A single amino acid substitution (S241P) in the EVA71 VP1 protein was exclusive to the CNS in one subject. CONCLUSION: mNGS with VirScan significantly increased the CNS detection of EVs relative to qRT-PCR, and the latter generated an antigenic profile of the acute EV-A71 immune response. Genomic analysis confirmed the close relation of the outbreak EV-A71 and neuroinvasive German EV-A71. A S241P substitution in VP1 was found exclusively in the CSF.Grants supporting this project include the National Multiple Sclerosis Society and the American Academy of Neurology award FAN-1608-25607 (R.D.S.), Clinical Research Training Scholarship P0534134 (P.S.R.), Sandler and William K. Bowes Jr Foundations (M.R.W., J.L.D., L.M.K., H.A.S., K.C.Z.), Rachleff Family Foundation (M.R.W.), and NINDS of the NIH under award K08NS096117 (M.R.W.) and F31NS113432 (K.E.L.). This study was partially supported by a grant from the Spanish National Health Institute [grant number PI15CIII-00020] and the European Regional Development Fund (FEDER funds). UCSF Biomedical Sciences Program (I.A.H., K.E.L.), UCSF Medical Scientist Training Program (K.E.L.), and the Chan Zuckerberg Biohub (J.E.P., W.W., C.K.C., J.L.D., E.D.C.) also supported this project.S
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Abnormal functional activation and maturation of ventromedial prefrontal cortex and cerebellum during temporal discounting in autism spectrum disorder
People with autism spectrum disorder (ASD) have poor decision-making and temporal foresight. This may adversely impact on their everyday life, mental health, and productivity. However, the neural substrates underlying poor choice behavior in people with ASD, or its' neurofunctional development from childhood to adulthood, are unknown. Despite evidence of atypical structural brain development in ASD, investigation of functional brain maturation in people with ASD is lacking. This cross-sectional developmental fMRI study investigated the neural substrates underlying performance on a temporal discounting (TD) task in 38 healthy (11–35 years old) male adolescents and adults with ASD and 40 age, sex, and IQ-matched typically developing healthy controls. Most importantly, we assessed group differences in the neurofunctional maturation of TD across childhood and adulthood. Males with ASD had significantly poorer task performance and significantly lower brain activation in typical regions that mediate TD for delayed choices, in predominantly right hemispheric regions of ventrolateral/dorsolateral prefrontal cortices, ventromedial prefrontal cortex, striatolimbic regions, and cerebellum. Importantly, differential activation in ventromedial frontal cortex and cerebellum was associated with abnormal functional brain maturation; controls, in contrast to people with ASD, showed progressively increasing activation with increasing age in these regions; which furthermore was associated with performance measures and clinical ASD measures (stereotyped/restricted interests). Findings provide first cross-sectional evidence that reduced activation of TD mediating brain regions in people with ASD during TD is associated with abnormal functional brain development in these regions between childhood and adulthood, and this is related to poor task performance and clinical measures of ASD
A Narrative Review of Motor Competence in Children and Adolescents: What We Know and What We Need to Find Out
Lack of physical activity is a global public health problem causing not only morbidity and premature mortality, but it is also a major economic burden worldwide. One of the cornerstones of a physically active lifestyle is Motor Competence (MC). MC is a complex biocultural attribute and therefore, its study requires a multi-sectoral, multi-, inter- and transdisciplinary approach. MC is a growing area of research, especially in children and adolescents due to its positive association with a plethora of health and developmental outcomes. Many questions, however, remain to be answered in this field of research, with regard to: (i) Health and Developmental-related Associations of MC; (ii) Assessment of MC; (iii) Prevalence and Trends of MC; (iv) Correlates and Determinants of MC; (v) MC Interventions, and (vi) Translating MC Research into Practice and Policy. This paper presents a narrative review of the literature, summarizing current knowledge, identifying key research gaps and presenting questions for future investigation on MC in children and adolescents. This is a collaborative effort from the International Motor Competence Network (IMCNetwork) a network of academics and researchers aiming to promote international collaborative research and knowledge translation in the expansive field of MC. The knowledge and deliverables generated by addressing and answering the aforementioned research questions on MC presented in this review have the potential to shape the ways in which researchers and practitioners promote MC and physical activity in children and adolescents across the worl
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