scholarly journals Invariance Pressure of Control Sets

2018 ◽  
Vol 56 (6) ◽  
pp. 4130-4147 ◽  
Author(s):  
Fritz Colonius ◽  
Joa͂o A. N. Cossich ◽  
Alexandre J. Santana
Keyword(s):  
Control Sets ◽  
Invariance Pressure

scholarly journals Phytoremediation Potential of Vetiver System Technology for Improving the Quality of Palm Oil Mill Effluent

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Negisa Darajeh ◽  
Azni Idris ◽  
Paul Truong ◽  
Astimar Abdul Aziz ◽  
Rosenani Abu Bakar ◽  
...  
Keyword(s):  
Palm Oil ◽  
Oxygen Demand ◽  
Raw Material ◽  
Biofuel Production ◽  
Palm Oil Mill Effluent ◽  
System Technology ◽  
High Concentration ◽  
Low Concentration ◽  
Control Sets ◽  
Palm Oil Mill

Palm oil mill effluent (POME), a pollutant produced by the palm oil industry, was treated by the Vetiver system technology (VST). This technology was applied for the first time to treat POME in order to decrease biochemical oxygen demand (BOD) and chemical oxygen demand (COD). In this study, two different concentrations of POME (low and high) were treated with Vetiver plants for 2 weeks. The results showed that Vetiver was able to reduce the BOD up to 90% in low concentration POME and 60% in high concentration POME, while control sets (without plant) only was able to reduce 15% of BOD. The COD reduction was 94% in low concentration POME and 39% in high concentration POME, while control just shows reduction of 12%. Morphologically, maximum root and shoot lengths were 70 cm, the number of tillers and leaves was 344 and 86, and biomass production was 4.1 kg m−2. These results showed that VST was effective in reducing BOD and COD in POME. The treatment in low concentration was superior to the high concentration. Furthermore, biomass of plant can be considered as a promising raw material for biofuel production while high amount of biomass was generated in low concentration of POME.

Developmental venous anomaly in adult patients with diffuse glioma

Neurology ◽  
2018 ◽  
Vol 92 (1) ◽  
pp. e55-e62 ◽  
Author(s):  
Alexandre Roux ◽  
Myriam Edjlali ◽  
Sayuri Porelli ◽  
Arnault Tauziede-Espariat ◽  
Marc Zanello ◽  
...  
Keyword(s):  
External Validation ◽  
Adult Patients ◽  
World Health ◽  
Diffuse Glioma ◽  
Developmental Venous Anomaly ◽  
Venous Anomaly ◽  
Control Sets ◽  
Control Set ◽  
Validation Set ◽  
Health Organization

ObjectiveTo determine the prevalence of developmental venous anomaly in adult patients with diffuse glioma.MethodsWe performed a retrospective cohort study (2010–2016) of consecutive adult patients harboring a supratentorial diffuse glioma in 2 centers: Sainte-Anne Hospital (experimental and control sets) and Pitié-Salpêtrière Hospital (external validation set). We included 219 patients with diffuse glioma (experimental set), 252 patients with brain metastasis (control set), and 200 patients with diffuse glioma (validation set). The inclusion criteria were age ≥18 years at diagnosis, histopathologic diagnosis of diffuse glioma according to the 2016 World Health Organization classification of tumors of the CNS, surgery as first-line treatment without previous oncologic treatment, available presurgical MRI performed with similar acquisition protocol, and absence of a nodular-like or a ring-like pattern of contrast enhancement on MRI that may preclude the identification of a possible developmental venous anomaly within the glioma.ResultsWe found more developmental venous anomaly in the experimental set (21.5%) than in the control set (5.2%, p < 0.001). Similarly, we found more developmental venous anomaly in the validation set (23.5%) than in the control set (5.2%, p < 0.001). There was no difference in the developmental venous anomaly prevalence between the experimental and validation sets. The developmental venous anomaly distribution was not significantly associated with histopathologic, molecular, or imaging findings of the diffuse gliomas.ConclusionsWe report and replicate in an external cohort a high prevalence of developmental venous anomaly in adult patients with diffuse glioma, which suggests a potential underlying common predisposition or a causal relationship that requires deeper investigations.

scholarly journals Geometry of Multiprimary Display Colors II: Metameric Control Sets and Gamut Tiling Color Control Functions

2021 ◽  
Author(s):  
Carlos Rodriguez-Pardo ◽  
Gaurav Sharma
Keyword(s):  
Broad Class ◽  
Convex Polytope ◽  
Building Blocks ◽  
Complete Characterization ◽  
Mathematical Framework ◽  
Control Functions ◽  
Control Sets ◽  
Multiple Alternative ◽  
Color Control

<div>For multiprimary displays that have four or more primaries, a color may be reproduced using multiple alternative control vectors. We provide a complete characterization of the Metameric Control Set (MCS), i.e., the set of control vectors that reproduce a given color on the display. Specifically, we show that MCS is a convex polytope whose vertices are control vectors obtained from (parallelepiped) tilings of the gamut, i.e., the range of colors that the display can produce. The mathematical framework that we develop: (a) characterizes gamut tilings in terms of fundamental building blocks called facet spans, (b) establishes that the vertices of the MCS are fully characterized by the tilings of the gamut, and (c) introduces a methodology for the efficient enumeration of gamut tilings. The framework reveals the fundamental inter-relations between the geometry of the MCS and the geometry of the gamut developed in a companion Part I paper, and provides insight into alternative strategies for color control. Our characterization of tilings and the strategy for their enumeration also advance knowledge in geometry, providing new approaches and computational results for the enumeration of tilings for a broad class of zonotopes in R<sup>3</sup>.</div>

scholarly journals Satellites and central galaxies in SDSS: the influence of interactions on their properties

2020 ◽  
Vol 501 (1) ◽  
pp. 1046-1058
Author(s):  
Valeria Mesa ◽  
Sol Alonso ◽  
Georgina Coldwell ◽  
Diego García Lambas ◽  
J L Nilo Castellon
Keyword(s):  
Star Formation ◽  
Stellar Population ◽  
Star Formation Rate ◽  
Formation Rate ◽  
Control Sample ◽  
Stellar Populations ◽  
Control Sets ◽  
Central Galaxy ◽  
Star Formation Activity ◽  
Projected Distance

ABSTRACT We use SDSS-DR14 to construct a sample of galaxy systems consisting of a central object and two satellites. We adopt projected distance and radial velocity difference criteria and impose an isolation criterion to avoid membership in larger structures. We also classify the interaction between the members of each system through a visual inspection of galaxy images, finding ${\sim}80{{\ \rm per\ cent}}$ of the systems lack evidence of interactions whilst the remaining ${\sim}20{{\ \rm per\ cent}}$ involve some kind of interaction, as inferred from their observed distorted morphology. We have considered separately, samples of satellites and central galaxies, and each of these samples were tested against suitable control sets to analyse the results. We find that central galaxies showing signs of interactions present evidence of enhanced star formation activity and younger stellar populations. As a counterpart, satellite samples show these galaxies presenting older stellar populations with a lower star formation rate than the control sample. The observed trends correlate with the stellar mass content of the galaxies and with the projected distance between the members involved in the interaction. The most massive systems are less affected since they show no star formation excess, possibly due to their more evolved stage and less gas available to form new stars. Our results suggest that it is arguably a transfer of material during interactions, with satellites acting as donors to the central galaxy. As a consequence of the interactions, satellite stellar population ages rapidly and new bursts of star formation may frequently occur in the central galaxy.

scholarly journals Using pingers to reduce bycatch of small cetaceans in Peru's small-scale driftnet fishery

Oryx ◽  
2013 ◽  
Vol 47 (4) ◽  
pp. 595-606 ◽  
Author(s):  
Jeffrey C. Mangel ◽  
Joanna Alfaro-Shigueto ◽  
Matthew J. Witt ◽  
David J. Hodgson ◽  
Brendan J. Godley
Keyword(s):  
Large Scale ◽  
Small Scale ◽  
Marine Fauna ◽  
Incidental Capture ◽  
Small Scale Fisheries ◽  
Control Sets ◽  
Northern Peru ◽  
Catch Rates

AbstractThere is growing awareness that small-scale fisheries may have large impacts on threatened marine fauna. Bycatch of small cetaceans by the Peruvian small-scale driftnet fleet results in the deaths of thousands of animals annually. We sought to assess the effectiveness of acoustic alarms (pingers) for reducing the incidental capture of dolphins and porpoises by this fleet. Forty-three experimental trips (156 fishing sets) and 47 control trips (195 fishing sets) out of Salaverry Port, northern Peru, were observed from April 2009 to August 2011. Twenty-two percent of control sets captured small cetaceans (67 individuals) and 16% of experimental sets had captures of small cetaceans (33 individuals). The bycatch rate of experimental sets was 0.50 individuals km−2h−1, whereas for control sets the rate was 0.80 individuals km−2h−1. This 37% reduction in bycatch rate suggests that pingers may be effective in reducing the bycatch of small cetaceans in this fishery. Catch rates of the fishery's target shark and ray species were unchanged. Given the vast size of this fishery and its current levels of bycatch of small cetaceans (> 10,000 individuals annually), even the modest declines in bycatch we observed could result in reductions in mortality of hundreds or thousands of small cetaceans per annum. Challenges, including increased costs, to large-scale utilization of pingers have yet to be overcome. The harpooning of dolphins for use as bait will also need to be addressed for further reductions in dolphin and porpoise bycatch and mortality to be achievable.

Blockchain as an Enabler for Zero-Trust Architectures

2021 ◽  
pp. 234-263
Keyword(s):  
Supply Chain ◽  
Cyber Security ◽  
Fourth Dimension ◽  
Access Management ◽  
Security Controls ◽  
Blockchain Technology ◽  
Control Sets ◽  
Critical Areas ◽  
New Strategy ◽  
Finger Printing

From the lessons that can be learned so far in this book, the author justifies why a new strategy is required to refocus our perception and utilization of computerized capabilities in the future. Chapter 8 focuses on the advancement of the cyber security discipline by determining trust-less control-sets – a fourth dimension if you will, comprising blockchain technology. Blockchain has been implemented in fungible forms, such as public bitcoin and Ethereum, and in a non-fungible manner like private keyless signature infrastructure. It is the latter that is of particular interest, where proven implementations have the potential to demonstrably act as a verifiable trust anchor, embellishing cyber security controls in a number of critical areas to ensure (1) preservation of data integrity, (2) digital finger printing of IoT assets to prove the source of data is trustworthy, (3) validation of identity and access management mechanisms, and (4) software provenance in the supply chain for not only traditional code-bases but also AI algorithms.

scholarly journals IN VITRO ANTHELMINTIC AND ANTI-AMYLASE PROPERTIES OF GARCINIA PEDUNCULATA ROXB. ETHANOLIC EXTRACT

2016 ◽  
Vol 9 (1) ◽  
pp. 189
Author(s):  
Pinky Sarmah ◽  
Nako Kobing ◽  
Jyotchna Gogoi ◽  
Ananta Madhab Dutta
Keyword(s):  
Anthelmintic Activity ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Biological Properties ◽  
Death Time ◽  
Control Sets ◽  
Point Analysis ◽  
Soxhlet Apparatus ◽  
And Control

<p><strong>Objective</strong>:<strong> </strong>The present study aims to investigate <em>in vitro</em> anthelmintic and anti-amylase properties of the ethanolic fruit extract of <em>Garcinia pedunculata</em>.</p><p><strong>Methods</strong>:<strong> </strong>For the study, mature fruits of <em>G. pedunculata</em> were collected from local markets during April-May. Fleshy pericarps of fruits were chopped into small pieces, dried and extracted by using a Soxhlet apparatus. Ethanol extract of <em>G. pedunculata</em> was used for evaluation of <em>in vitro</em> anthelmintic and anti-amylase activities. <em>In vitro</em> anthelmintic activity was evaluated in animal models, <em>Pheretima posthuma</em>, an earthworm species. <em>In vitro</em> anti-amylase activity was evaluated by using zymographic, achromic point analysis (Starch-Iodine method) and spectrophotometric method [Di Nitro Salicylic acid (DNS)–Maltose method].</p><p><strong>Results</strong>:<strong> </strong>Ethanolic extract of <em>G. pedunculata</em> showed anthelmintic activity at a concentration of 75 mg/ml, paralysis and death timing was reported at 0.62±0.26 min and 1.42±0.07 min, respectively. The reference standard (Albendazole) showed paralysis time: 2.13±0.28 min and death time: 5.12±0.29 min. In the anti-amylase study, a zymographic density analysis of <em>G. pedunculata</em> showed significant variation in band intensity as compared to Starch–Iodine achromic point analysis and DNS–Maltose method. A concentration of 1.5 mg/ml of extract showed inhibition of amylase: 67.65±1.53 % as compared to other concentrations and control sets.</p><strong>Conclusion</strong>:<strong> </strong>It could be concluded that ethanolic extract of <em>G. pedunculata</em>has biological properties which could be utilised in medicine by characterising its bioactive components.<p> </p>

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