158 research outputs found
Spatiotemporal chaos and quasipatterns in coupled reactionâdiffusion systems
In coupled reactionâdiffusion systems, modes with two different length scales can interact to produce a wide variety of spatiotemporal patterns. Three-wave interactions between these modes can explain the occurrence of spatially complex steady patterns and time-varying states including spatiotemporal chaos. The interactions can take the form of two short waves with different orientations interacting with one long wave, or vice verse. We investigate the role of such three-wave interactions in a coupled Brusselator system. As well as finding simple steady patterns when the waves reinforce each other, we can also find spatially complex but steady patterns, including quasipatterns. When the waves compete with each other, time varying states such as spatiotemporal chaos are also possible. The signs of the quadratic coefficients in three-wave interaction equations distinguish between these two cases. By manipulating parameters of the chemical model, the formation of these various states can be encouraged, as we confirm through extensive numerical simulation. Our arguments allow us to predict when spatiotemporal chaos might be found: standard nonlinear methods fail in this case. The arguments are quite general and apply to a wide class of pattern-forming systems, including the Faraday wave experiment
Automatic Class Timetable Generation using a Hybrid Genetic and Tabu Algorithm
Timetable generation is a combinatorial optimization problem. Meta Heuristic methods and Evolutionary Algorithms have given the best results when it comes to solving the problem of timetable generation. In our paper the problem of timetable generation for the Computer Science and Engineering Dept. of BMS College of Engineering is solved with the help of Genetic Algorithm and Tabu Search which belong to the class of Evolutionary Algorithms and Meta â Heuristics respectively. Genetic Algorithms help in finding multiple optimal solutions in one iteration but they can get stuck at local optima. This can be avoided by using Tabu Search procedure.
DOI: 10.17762/ijritcc2321-8169.150510
Can saliva offer an advantage in monitoring of diabetes mellitus?: a case control study
Objectives: Diabetes Mellitus is emerging as a major health problem over these years. Present method of blood
glucose monitoring by venepuncture is invasive leading to reduced patient compliance and thereby ineffective
judicious monitoring. The need of the hour is to direct research in the direction of establishing painless and more
acceptable blood glucose analysis method.The objective of the study is to conduct a comparative analysis of the
concentrations of salivary glucose and blood glucose in type 2 diabetes mellitus patients.
Study Design: This study assessed glucose levels using the glucose oxidase method in blood and unstimulated sali
-
va in 90 subjects who were divided into 3 equal groups of controlled type 2 diabetes, uncontrolled type 2 diabetes
and those without diabetes. Statistical analysis was carried out using one way ANOVA, Post hoc Tukeys tests and
Pearson's correlation coefficient test.
Results: Salivary glucose levels were significantly higher in patients with diabetes than controls. There was a signi
-
ficant positive correlation between salivary and plasma glucose levels in patients with diabetes.
Conclusions: Glucose concentration in saliva is higher in diabetics but hyperglycemia does not influence salivary
glucose levels. Further clarification is required to claim the diagnostic potentials of saliva in diabetes
Psychosocial factors in patients with kidney failure and role for social worker : a secondary data audit
Background: People with kidney failure face a multitude of psychosocial stressors that affect disease trajectory and health outcomes. Objectives: To investigate psychosocial factors affecting people with kidney failure before or at start of kidney replacement therapy (KRT) and kidney supportive and palliative care (KSPC) phases of illness and to explore role of social worker during the illness trajectory. Methods: We conducted a secondary data audit of patients either before or at start of KRT (Phase 1) and at the KSPC (Phase 2) of illness and had psychosocial assessments between March 2012 and March 2020 in an Australian setting. Results: Seventy-nine individuals, aged 70 ĂÂą 12 years, had at least two psychosocial assessments, one in each of the two phases of illness. The median time between social worker evaluations in Phase 1 and Phase 2 was 522 (116â943) days. Adjustment to illness and treatment (90%) was the most prevalent psychosocial issue identified in Phase 1, which declined to 39% in Phase 2. Need for aged care assistance (7.6%â63%; p < 0.001) and carer support (7.6%â42%; p < 0.001) increased significantly from Phase 1 to Phase 2. There was a significant increase in psychosocial interventions by the social worker in Phase 2, including supportive counselling (53%â73%; p < 0.05), provision of education and information (43%â65%; p < 0.01), and referrals (28%â62%; p < 0.01). Conclusion: Adults nearing or at the start of KRT experience immense psychosocial burden and adaptive demands that recognisably change during the course of illness. The positive role played by the nephrology social worker warrants further investigation
Connective tissue disease related interstitial lung diseases and idiopathic pulmonary fibrosis: provisional core sets of domains and instruments for use in clinical trials
Rationale Clinical trial design in interstitial lung diseases (ILDs) has been hampered by lack of consensus on appropriate outcome measures for reliably assessing treatment response. In the setting of connective tissue diseases (CTDs), some measures of ILD disease activity and severity may be confounded by non-pulmonary comorbidities. Methods The Connective Tissue Disease associated Interstitial Lung Disease (CTD-ILD) working group of Outcome Measures in Rheumatologyâa non-profit international organisation dedicated to consensus methodology in identification of outcome measuresâconducted a series of investigations which included a Delphi process including >248 ILD medical experts as well as patient focus groups culminating in a nominal group panel of ILD experts and patients. The goal was to define and develop a consensus on the status of outcome measure candidates for use in randomised controlled trials in CTD-ILD and idiopathic pulmonary fibrosis (IPF). Results A core set comprising specific measures in the domains of lung physiology, lung imaging, survival, dyspnoea, cough and health-related quality of life is proposed as appropriate for consideration for use in a hypothetical 1-year multicentre clinical trial for either CTD-ILD or IPF. As many widely used instruments were found to lack full validation, an agenda for future research is proposed. Conclusion Identification of consensus preliminary domains and instruments to measure them was attained and is a major advance anticipated to facilitate multicentre RCTs in the field
M5 spikes and operators in the HVZ membrane theory
In this note we study some aspects of the so-called dual ABJM theory
introduced by Hanany, Vegh & Zaffaroni. We analyze the spectrum of chiral
operators, and compare it with the spectrum of functions on the mesonic moduli
space M=C^2\times C^2/Z_k, finding expected agreement for the coherent branch.
A somewhat mysterious extra branch of dimension N^2 opens up at the orbifold
fixed point. We also study BPS solutions which represent M2/M5 intersections.
The mesonic moduli space suggests that there should be two versions of this
spike: one where the M5 lives in the orbifolded C^2 and another where it lives
in the unorbifolded one. While expectedly the first class turns out to be like
the ABJM spike, the latter class looks like a collection of stacks of M5 branes
with fuzzy S^3 profiles. This shows hints of the appearance of the global SO(4)
at the non-abelian level which is otherwise not present in the bosonic
potential. We also study the matching of SUGRA modes with operators in the
coherent branch of the moduli space. As a byproduct, we present some formulae
for the laplacian in conical CY_4 of the form C^n\times CY_{4-n}.Comment: 22 pages, 1 figure. Published version with corrected typos
Chiral primary one-point functions in the D3-D7 defect conformal field theory
JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0archiveprefix: arXiv primaryclass: hep-th reportnumber: NORDITA-2012-81 slaccitation: %%CITATION = ARXIV:1210.7015;%%archiveprefix: arXiv primaryclass: hep-th reportnumber: NORDITA-2012-81 slaccitation: %%CITATION = ARXIV:1210.7015;%%C.F.K. and D.Y. were supported in part by FNU through grant number 272-08-0329.
G.W.S. is supported by NSERC of Canada and by the Villum foundation through their
Velux Visiting Professor program
Aflatoxin Exposure May Contribute to Chronic Hepatomegaly in Kenyan School Children
Background: Presentation with a firm type of chronic hepatomegaly of multifactorial etiology is common among school-age children in sub-Saharan Africa
Barriers to and Facilitators of a Career as a PhysicianâScientist Among Rheumatologists in the US
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/113102/1/acr22569.pd
A review of a strategic roadmapping exercise to advance clinical translation of photoacoustic imaging: From current barriers to future adoption
Photoacoustic imaging (PAI), also referred to as optoacoustic imaging, has shown promise in early-stage clinical trials in a range of applications from inflammatory diseases to cancer. While the first PAI systems have recently received regulatory approvals, successful adoption of PAI technology into healthcare systems for clinical decision making must still overcome a range of barriers, from education and training to data acquisition and interpretation. The International Photoacoustic Standardisation Consortium (IPASC) undertook an community exercise in 2022 to identify and understand these barriers, then develop a roadmap of strategic plans to address them. Here, we outline the nature and scope of the barriers that were identified, along with short-, medium- and long-term community efforts required to overcome them, both within and beyond the IPASC group
- âŚ