An Approach to a Process Model of Laser Beam Melt Ablation Using Methods of Linear and Nonlinear Data Analysis

ABSTRACTRecent advances in instrumentation and data analysis have made spectroscopic ellipsometry a routine analytic tool with submonolayer sensitivity for monitoring and controlling cleaning, etching, deposition, or other processes that take place in relatively high-pressure or reactive environments. We discuss representative applications in chemical etching, plasma processing, and MOCVD to illustrate analytical procedures and to indicate other potential uses of the technique. The possibility of extracting surface information already carried in the polarization state of the processing laser beam is also discussed.

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Patient loyalty to HIV care in an HIV facility in Eldoret, Kenya: A mediated mediation

AAS Open Research ◽

10.12688/aasopenres.13121.1 ◽

2020 ◽

Vol 3 ◽

pp. 48

Author(s):

Felishana Cherop ◽

Michael Korir ◽

Vincent Bagire ◽

Juddy Wachira

Keyword(s):

Data Analysis ◽

Process Model ◽

Health Care Systems ◽

Quality Care ◽

Healthcare Providers ◽

Antiretroviral Drugs ◽

Hiv Care ◽

Mediation Effects ◽

Patient Loyalty ◽

Depth Interviews

Patient loyalty is the continuous commitment and engagement in care where patients can improve and sustain quality of life through continuous use of medical care. Identifying strengths and weaknesses in providing excellent quality care is a key measure of success of healthcare professionals and hospital management. However, few studies have examined patient loyalty from a strategic leadership perspective within HIV health care systems. The purpose of this study is to determine how patient loyalty to HIV care is influenced by multiple factors in a healthcare system environment. The study employs a mixed-methods approach guided by the complexity theory and the theory of planned behavior. A total of 444 surveys with (50 healthcare providers and 394 adult HIV-infected patients) currently on antiretroviral drugs, as well as 22 in-depth interviews with healthcare providers will be conducted. The study will be done at AMPATH Eldoret Kenya. We will use stratified proportionate and census sampling methods to select study participants for the survey while purposive and convenient sampling techniques will be used for in-depth interviews. Structured questionnaires and interviewer guides will guide data collection. Quantitative data analysis will entail hierarchical regression to test direct effects while multiple regression will test the mediation effects using the Hayes PROCESS Model No.6 in SPSS. Qualitative data analysis will be conducted using a thematic analytical method.

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Nonlinear Data Analysis Using a New Hybrid Data Clustering Algorithm

Advances in Knowledge Discovery and Data Mining - Lecture Notes in Computer Science ◽

10.1007/978-3-642-01307-2_17 ◽

2009 ◽

pp. 160-171 ◽

Cited By ~ 2

Author(s):

Ureerat Wattanachon ◽

Jakkarin Suksawatchon ◽

Chidchanok Lursinsap

Keyword(s):

Data Analysis ◽

Data Clustering ◽

Clustering Algorithm ◽

Hybrid Data ◽

Nonlinear Data Analysis

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Process Analysis of Laser Beam Cladding

Journal of Manufacturing Science and Engineering ◽

10.1115/1.1344899 ◽

2000 ◽

Vol 123 (4) ◽

pp. 609-614 ◽

Cited By ~ 58

Author(s):

A. F. H. Kaplan ◽

G. Groboth

Keyword(s):

Laser Beam ◽

Process Model ◽

Process Analysis ◽

Single Step ◽

Balance Equations ◽

Energy Redistribution ◽

Geometrical Properties ◽

Clad Layer ◽

Powder Mass ◽

Balance Equations Of Energy

The technology of laser beam cladding of metals by single-step powder delivery is analyzed with a process model which is based on balance equations of energy and mass. Effects like powder heating, clad layer formation, substrate dilution and overlapping of tracks are discussed in dependence of the process parameters. In particular, the powder catchment efficiency and the beam energy redistribution in the material can be optimized by the powder mass flow rate and by the geometrical properties of the beam and of the powder jet.

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