2,808 research outputs found
Quantum Griffiths Inequalities
No full textWe present a general framework of Griffiths inequalities for quantum systems. Our approach is based on operator inequalities associated with self-dual cones and provides a consistent viewpoint of the Griffiths inequality. As examples, we discuss the quantum Ising model, quantum rotor model, Bose-Hubbard model, and Hubbard model. We present a model-independent structure that governs the correlation inequalities
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Gaming addiction in adolescence (revisited)
No full textGaming addiction has become a topic of increasing research interest. Over the last 25 years, I have written many articles on adolescent video gaming for Education and Health as it is one of the research fields that is constantly evolving. In fact, over the last decade, there has been a significant increase in the number of scientific studies examining various aspects of online addiction particularly among adolescents and young adults (Kuss & Griffiths, 2012; Kuss, Griffiths, Karila & Billieux, 2014). Although the amount and the quality of research in the field has progressed much over this period, it is still in its infancy compared to other more established behavioural addictions (such as pathological gambling). This article briefly examines (i) how adolescent gaming addiction research has changed over the last three decades, (ii) how online gaming addiction has gained genuine psychiatric status, (iii) excessive gaming as an addiction, and (iv) where the gaming addiction field is going
A Markov Chain state transition approach to establishing critical phases for AUV reliability
No full textThe deployment of complex autonomous underwater platforms for marine science comprises a series of sequential steps. Each step is critical to the success of the mission. In this paper we present a state transition approach, in the form of a Markov chain, which models the sequence of steps from pre-launch to operation to recovery. The aim is to identify the states and state transitions that present higher risk to the vehicle and hence to the mission, based on evidence and judgment. Developing a Markov chain consists of two separate tasks. The first defines the structure that encodes the sequence of events. The second task assigns probabilities to each possible transition. Our model comprises eleven discrete states, and includes distance-dependent underway survival statistics. The integration of the Markov model with underway survival statistics allows us to quantify the likelihood of success during each state and transition and consequently the likelihood of achieving the desired mission goals. To illustrate this generic process, the fault history of the Autosub3 autonomous underwater vehicle provides the information for different phases of operation. The method proposed here adds more detail to previous analyses; faults are discriminated according to the phase of the mission in which they took place
A Systematic Review of Online Sex Addiction and Clinical Treatments Using CONSORT Evaluation
No full textResearchers have suggested that the advances of the Internet over the past two decades have gradually eliminated traditional offline methods of obtaining sexual material. Additionally, research on cybersex and/or online sex addictions has increased alongside the development of online technology. The present study extended the findings from Griffiths’ (2012) systematic empirical review of online sex addiction by additionally investigating empirical studies that implemented and/or documented clinical treatments for online sex addiction in adults. A total of nine studies were identified and then each underwent a CONSORT evaluation. The main findings of the present review provide some evidence to suggest that some treatments (both psychological and/or pharmacological) provide positive outcomes among those experiencing difficulties with online sex addiction. Similar to Griffiths’ original review, this study recommends that further research is warranted to establish the efficacy of empirically driven treatments for online sex addiction
Results of expert judgments on the faults and risks with Autosub3 and an analysis of its campaign to Pine Island Bay, Antarctica, 2009
No full textProbabilistic risk assessment is a methodology that can be systematically applied to estimate the risk associated with the design and operation of complex systems. The National Oceanography Centre, Southampton, UK has developed a risk management process tailored to the operation of autonomous underwater vehicles. Central to the application of the risk management process is a probabilistic risk assessment. The risk management process was applied to estimate the risk associated with an Autosub3 science campaign in the Pine Island Glacier, Antarctica, and to support decision making. The campaign was successful. In this paper we present the Autosub3 risk model and we show how this model was used to assess the campaign risk
Interactive television quizzes as gambling: a cause for concern?
No full textRecently, there has been a significant increase in the number of UK television shows in which viewers call into the show using a premium-rate telephone service. At one level it could be argued that in these instances viewers are participating in a lottery. Viewers are typically asked to call a premium-rate telephone line to answer a simple question. Winners are then chosen from all those viewers with the correct answer. It could also be argued that the viewer is staking money (i.e., the cost of the premium-rate telephone call) on the outcome of a future event (i.e., whether they will get the correct answer). This again could be defined as a form of gambling. Interactive television quiz shows share many of the dimensions of interactive television gambling and also raise the same concerns about vulnerable and susceptible populations. These concerns are discussed
Psycholinguistic Credibility Assessment of News Reports About A 142-Year Old Mass Murder
No full textabstract: This presentation demonstrates how credibility assessment may be used on historical news and literary documents to determine the veracity of victims and witnesses even when formal statements were never made, or were lost to history. The presentation analyzes first hand accounts of the "Wickenburg Massacre" of 1871.Presented by Griffiths at the American Academy of Forensic Sciences annual meeting, February 2014 in Seattle, WA,
The Alysiinae (Hym. Braconidae) parasites of the Agromyzidae (Diptera). VII Supplement.
No full textZusätzliche Informationen aus der Sammlung europäischer Alysiinae (haupsächlich Dacnusini) des Autors werden veröffentlicht aus Anlaß der Übergabe dieser Sammlung an das British Museum (Natural History). Zehn neue Arten werden beschrieben, zwei in Dacnusa Haliday (D. arctica spec. nov. und D. euphrasiella spec. nov.), drei in Exotela Förster (E. viciae spec. nov., E. lathyri spec. nov. und E. chromatomyia spec. nov.) und fünf in Chorebus Haliday (C. galii spec. nov., C. rostratae spec. nov., C. chenopodii spec. nov., C. claripennis spec. nov. und C. eucodonis spec. nov.). Chorebus stenocentrus (Thomson) wird neu beschrieben.Nomenklatorische Handlungenchenopodii Griffiths, 1984 (Chorebus), spec. n.claripennis Griffiths, 1984 (Chorebus), spec. n.eucodonis Griffiths, 1984 (Chorebus), spec. n.galii Griffiths, 1984 (Chorebus), spec. n.rostratae Griffiths, 1984 (Chorebus), spec. n.stenocentrus (Thomson, 1895) (Chorebus), comb. n. hitherto Dacnusa (Dacnusa) stenocentraarctica Griffiths, 1984 (Dacnusa), spec. n.cerpheres (Nixon, 1948) (Dacnusa), comb. n. hitherto Rhizarcha cerphereseuphrasiella Griffiths, 1984 (Dacnusa), spec. n.chromatomyiae Griffiths, 1984 (Exotela), spec. n.lathyri Griffiths, 1984 (Exotela), spec. n.viciae Griffiths, 1984 (Exotela), spec. n.Supplementary information from the author´s collection of European Alysiinae (mainly Dacnusini) is here published on the occasion of the deposition of that collection in the British Museum (Natural History). Ten new species are described, two in Dacnusa Haliday (D. arctica spec. nov. and D. euphrasiella spec. nov.), three in Exotela Förster (E. viciae spec. nov., E. lathyri spec. nov. and E. chromatomyia spec. nov.), and five in Chorebus Haliday (C. galii spec. nov., C. rostratae spec. nov., C. chenopodii spec. nov., C. claripennis spec. nov. and C. eucodonis spec. nov.). Chorebus stenocentrus (Thomson) is redescribed.Nomenclatural Actschenopodii Griffiths, 1984 (Chorebus), spec. n.claripennis Griffiths, 1984 (Chorebus), spec. n.eucodonis Griffiths, 1984 (Chorebus), spec. n.galii Griffiths, 1984 (Chorebus), spec. n.rostratae Griffiths, 1984 (Chorebus), spec. n.stenocentrus (Thomson, 1895) (Chorebus), comb. n. hitherto Dacnusa (Dacnusa) stenocentraarctica Griffiths, 1984 (Dacnusa), spec. n.cerpheres (Nixon, 1948) (Dacnusa), comb. n. hitherto Rhizarcha cerphereseuphrasiella Griffiths, 1984 (Dacnusa), spec. n.chromatomyiae Griffiths, 1984 (Exotela), spec. n.lathyri Griffiths, 1984 (Exotela), spec. n.viciae Griffiths, 1984 (Exotela), spec. n
Book Review: The World: A Family History of Humanity
No full textAuthor: Simon Sebag Montefiore
Reviewed by Lieutenant Colonel Zachary Griffiths (US Army), Special Assistant to the Chief of Staff of the Army
The Harding Project’s Lieutenant Colonel Zachary Griffiths reviews this best-selling, epic in scope history of the world framed by powerful families and gives an honest evaluation of the book’s potential value (and shortcomings) for soldiers. Griffiths notes that the book provides insight into the “richness of the human experience” with “vignettes to give color to historical military campaigns and humanize those campaigns’ participants.”https://press.armywarcollege.edu/parameters_bookshelf/1057/thumbnail.jp
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