نتایج جستجو برای: ifs probability

تعداد نتایج: 220539  

2008
MATTHEW NICOL DAVID BROOMHEAD

Suppose {f1, . . . , fm} is a set of Lipschitz maps of R . We form the iterated function system (IFS) by independently choosing the maps so that the map fi is chosen with probability pi ( ∑ m i=1 pi = 1). We assume that the IFS contracts on average. We give an upper bound for the Hausdorff dimension of the invariant measure induced on R and as a corollary show that the measure will be singular ...

2011
Ignacio J. Fernandez Marta Stanzani Giulia Tolomelli Ernesto Pasquini Nicola Vianelli Michele Baccarani Vittorio Sciarretta

Invasive fungal sinusitis (IFS) is a highly aggressive infection that can affect hematologic patients. The classically described general risk factors, however, do not fully explain the development of IFS in a small percentage of cases. This study examined the impact of anatomic sinonasal factors and environmental factors on the development of IFS in high-risk patients. Medical records and compu...

1999
M. Nappi D. Vitulano

This paper presents a hybrid system to speed up image fractal encoding. The coding scheme, LP–IFS, consists of linear prediction (LP) and Iterated Functions Systems (IFS) applied in cascade on the image. The LP process employs a 2D auto-regressive model to estimate parameters for each block in the image partition; IFS are then used instead of adaptive quantizers to encode linear prediction erro...

2010
L. Rodríguez A. Correcher E. García F. Morant E. Quiles

Intermittent faults (IFs) are difficult to diagnose and may cause a great disruption in industrial processes. Most IFs are related to gradual degradation of components or systems. For instance, evolution of connection failures is shown in Fig. 1 (Correcher et al., 2004), (Sorensen et al, 1998). Connection failures are rarely repaired so its behaviour worsens over time. Intermittent faults behav...

Journal: :BMC Public Health 2005
Gonzalo López-Abente Concha Muñoz-Tinoco

BACKGROUND Journal impact factor (IF) is linked to the probability of a paper being cited and is progressively becoming incorporated into researchers' curricula vitae. Furthermore, the decision as to which journal a given study should be submitted, may well be based on the trend in the journal's overall quality. This study sought to assess time trends in journal IF in the field of public, envir...

Journal: :The Journal of law, medicine & ethics : a journal of the American Society of Law, Medicine & Ethics 2008
Susan M Wolf Frances P Lawrenz Charles A Nelson Jeffrey P Kahn Mildred K Cho Ellen Wright Clayton Joel G Fletcher Michael K Georgieff Dale Hammerschmidt Kathy Hudson Judy Illes Vivek Kapur Moira A Keane Barbara A Koenig Bonnie S Leroy Elizabeth G McFarland Jordan Paradise Lisa S Parker Sharon F Terry Brian Van Ness Benjamin S Wilfond

No consensus yet exists on how to handle incidental findings (IFs) in human subjects research. Yet empirical studies document IFs in a wide range of research studies, where IFs are findings beyond the aims of the study that are of potential health or reproductive importance to the individual research participant. This paper reports recommendations of a two-year project group funded by NIH to st...

Journal: :J. Computational Applied Mathematics 2017
Michael Farmer George Loizou Stephen J. Maybank

Two classes of Iteration Functions (IFs) are derived in this paper. The first (one-point IFs) was originally derived by Joseph Traub using a different approach to ours (simultaneous IFs). The second is new and is demonstrably shown to be more informationally efficient than the first. These IFs apply to polynomials with arbitrary complex coefficients and zeros, which can also be multiple.

1993
Z Baharav D Malah E Karnin I B M Israel

The basics of a block oriented fractal image coder are reviewed. The output of the coder is an IFS (Iterated Function System), which approximates the image as a xed point of a contractive transformation. A new hierarchical interpretation of the IFS code, which relates the diierent scales of the xed point, is introduced. We prove the existence of a unique function of a continuous variable that i...

2015
Thomas C. Booth Jennifer M. Boyd-Ellison

OBJECTIVE Neuroimaging is an important diagnostic tool in the assessment of neurological disease, but often unmasks Incidental Findings (IFs). The negative impacts of IFs, such as 'patient' anxiety, present neurologists with management dilemmas, largely due to the limited knowledge base surrounding the medical significance of these IFs. In particular, the lack of evidence-based clinical trials ...

Journal: :American journal of human biology : the official journal of the Human Biology Council 2012
Lisa McAllister Michael Gurven Hillard Kaplan Jonathan Stieglitz

OBJECTIVES We develop and test a conceptual model of factors influencing women's ideal family size (IFS) in a natural fertility population, the Tsimane of Bolivia. The model posits affects of socioecology, reproductive history, maternal condition, and men's IFS. We test three hypotheses for why women may exceed their IFS despite experiencing socioeconomic development: (H(1) ) limited autonomy; ...

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