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Browsing University of Pretoria: Research Output by Author "Fabris-Rotelli, Inger Nicolette"
Now showing items 1-20 of 39
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Potgieter, Arminn; Fabris-Rotelli, Inger Nicolette; Breetzke, Gregory Dennis; Wright, Caradee Yael (Springer, 2022-05)
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Kraamwinkel, Christine; Fabris-Rotelli, Inger Nicolette; Stein, Alfred (Elsevier, 2018-12)Kernel smoothing is commonly used in spatial point patterns to construct intensity plots. Kernels allow for visually and subjectively inferring on first-order stationarity. Formal objective tests exist for testing first-order ...
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Mahloromela, Kabelo; Fabris-Rotelli, Inger Nicolette; Kraamwinkel, Christine (South African Statistical Association (SASA), 2023)In some standard applications of spatial point pattern analysis, window selection for spatial point pattern data is complex. Often, the point pattern window is given a priori. Otherwise, the region is chosen using some ...
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Fabris-Rotelli, Inger Nicolette (University of Pretoria, 2013-05-17)The LULU operators Ln and Un operate on neighbourhoods of size n. The Discrete Pulse Transform (DPT) of images is obtained via recursive peeling of so-called local maximum and minimum sets with the LULU operators as n ...
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De Lancey, Mark; Fabris-Rotelli, Inger Nicolette (CEUR Workshop Proceedings, 2019)The Discrete Pulse Transform (DPT) makes use of LULU smoothing to decompose a signal into block pulses. The most recent and effective implementation of the DPT is an algorithm called the Roadmaker's Pavage, which uses ...
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Smit, Marius C.; Bond-Barnard, Taryn Jane; Steyn, Herman; Fabris-Rotelli, Inger Nicolette (AOSIS, 2017-08-11)BACKGROUND : Project success used to be measured solely in terms of efficiency metrics such as scope, cost and time; however, there are proposals that more attention should be paid to process-related performance factors ...
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Uys, Andre; Fabris-Rotelli, Inger Nicolette; Bernitz, Herman (South African Dental Association, 2014-03)Forensic dentists are frequently required to determine the age at death of unidentified skeletons, or to age live individuals who have no record / documentation of their chronological age. In order to be of the greatest ...
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Fabris-Rotelli, Inger Nicolette; Van Oldenmark, K.; Van Staden, Paul Jacobus (South African Statistical Association, 2010-11)The LULU smoothers are effective nonlinear smoothers for signals. We investigate their ability to remove different noise types, namely symmetrical and skewed, as well as heavy- and light-tailed, thereby uncovering the true ...
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Lubbe, Berendien Anna; Douglas, Anneli; Wieme, Lesley Liliane Patricia; Fabris-Rotelli, Inger Nicolette (Pennsylvania State University Press, 2013)Frequent-flier programs (FFPs) are used by airlines to generate loyalty and attract new customers. Research has shown that these programs signifi - cantly affect travelers’ choice of airlines. In the managed travel environment ...
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Kirsten, René; Fabris-Rotelli, Inger Nicolette (South African Statistical Association, 2021)Two spatial data sets are considered to be similar if they originate from the same stochastic process in terms of their spatial structure. Many tests have been developed over recent years to test the similarity of certain ...
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Turner, Jason A.; Dunston-Clarke, Emma J.; Fabris-Rotelli, Inger Nicolette; De Iongh, Hans (MDPI, 2022-08-08)White lions are a colour variant of the African lion Panthera leo melanochaita and disappeared from the wild due to anthropogenic factors until their reintroduction to the Greater Kruger Park Region of South Africa in ...
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De Lancey, Mark; Fabris-Rotelli, Inger Nicolette (Computer Society of South Africa, 2020-12-08)The Discrete Pulse Transform (DPT) makes use of LULU smoothing to decompose a signal into block pulses. The most recent and effective implementation of the DPT is an algorithm called the Roadmaker’s Pavage, which uses a ...
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Bond-Barnard, Taryn Jane; Steyn, Herman; Fabris-Rotelli, Inger Nicolette (Elsevier, 2013-10)Call centres are increasingly being utilised in public sector programmes to facilitate and manage communication between numerous stakeholders. Yet, the impact of call centres on projects has not been investigated. This ...
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Breetzke, Gregory Dennis; King, Marcus; Fabris-Rotelli, Inger Nicolette (Sage, 2018-03)The Canterbury Earthquakes struck the Canterbury region of the South Island of New Zealand between September 2010 and February 2011. The Earthquakes resulted in widespread structural damage to Christchurch, the main city ...
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Fabris-Rotelli, Inger Nicolette; Stein, Alfred (Elsevier, 2018-12)The Discrete Pulse Transform (DPT) is a nonlinear decomposition of a signal and extracts the structures in a signal at discrete scale levels. This study models the image structure extracted using the DPT as connected ...
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Stein, Alfred; Ge, Yong; Fabris-Rotelli, Inger Nicolette (MDPI Publishing, 2018)Images obtained from satellites are of an increasing resolution. In addition, the frequency of their observations is increasing, and is expected to continue to increase in the near future. Despite these rapid developments, ...
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Fabris-Rotelli, Inger Nicolette; Kraamwinkel, Christine (South African Statistical Association, 2012-11)We present a historical and theoretical overview of the more complicated and less used G/M and M/G queueing processes, which allow for non-specific arrival and service time distributions. Such a model provides a more ...
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Buchanan, Glynn Dale; Gamieldien, Mohamed Yasin; Fabris-Rotelli, Inger Nicolette; Van Schoor, Albert-Neels; Uys, Andre (Nihon University School of Dentistry, 2023)PURPOSE : To investigate the root and canal morphology of mandibular second molars, including anatomical variations, in a Black South African population using two classification systems. METHODS : Cone-beam computed ...
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Modiba, Jacob; Fabris-Rotelli, Inger Nicolette; Stein, Alfred; Breetzke, Gregory Dennis (Elsevier, 2022-10)The analysis of point patterns on linear networks is receiving current attention in spatial statistics. This refers to the analysis of points in a spatial domain that coincide with a linear network like a road network. The ...
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Anguelov, Roumen; Fabris-Rotelli, Inger Nicolette (Institute of Electrical and Electronics Engineers, 2010-11)The LULU operators for sequences, that is, Ln,Un and their compositions, are extended to multidimensional arrays in a way which preserves their essential properties, e.g., consistent separation, total variation and shape ...
Now showing items 1-20 of 39