This document discusses data mining tools and techniques for analyzing diffraction patterns to identify materials. It provides an example of using data mining to analyze the diffraction pattern from a catalytic converter. Through phase identification, quantitation, and unit cell refinement, the pattern was identified as 75% cordierite and 25% stabilized zirconia. Further data mining of the PDF-4 database revealed the zirconia was doped with cerium and synthesized at 1200K. A patent search indicated the presence of 3% rhodium oxide. The analysis shows how materials can be characterized through integrated experimental and computational methods.
A benchmark of substructure searching tools given at the Cambridge Cheminformatics Network Meeting (May 27th). Slides have added annotated to aid description.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
With the unprecedented growth of chemical databases incorporating up to several hundred billions of synthetically feasible chemicals, modelers are not in shortage of chemicals to process. Importantly, such "Big Chemical Data" offers humongous opportunities for discovering novel bioactive molecules. However, the current generation of cheminformatics software tools is not capable of handling, characterizing, and processing such extremely large chemical libraries. In this presentation, we will discuss the rationale and the main challenges (theoretical and technical) for screening very large repositories of compounds in the current context of drug discovery. We will present several proof-of-concept studies regarding the screening of extremely large libraries (1+ billion compounds) using our novel GPU-accelerated cheminformatics platform to identify molecules with defined bioactivity. Overall, we will show that GPU computing represents an effective and inexpensive architecture to develop, employ, and validate a new generation of cheminformatics methods and tools ready to process billions of compounds.
Structural and Dielectric Properties of Lanthanum Substituted Lead ZirconateT...iosrjce
IOSR Journal of Applied Physics (IOSR-JAP) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of physics and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in applied physics. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
A benchmark of substructure searching tools given at the Cambridge Cheminformatics Network Meeting (May 27th). Slides have added annotated to aid description.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
With the unprecedented growth of chemical databases incorporating up to several hundred billions of synthetically feasible chemicals, modelers are not in shortage of chemicals to process. Importantly, such "Big Chemical Data" offers humongous opportunities for discovering novel bioactive molecules. However, the current generation of cheminformatics software tools is not capable of handling, characterizing, and processing such extremely large chemical libraries. In this presentation, we will discuss the rationale and the main challenges (theoretical and technical) for screening very large repositories of compounds in the current context of drug discovery. We will present several proof-of-concept studies regarding the screening of extremely large libraries (1+ billion compounds) using our novel GPU-accelerated cheminformatics platform to identify molecules with defined bioactivity. Overall, we will show that GPU computing represents an effective and inexpensive architecture to develop, employ, and validate a new generation of cheminformatics methods and tools ready to process billions of compounds.
Structural and Dielectric Properties of Lanthanum Substituted Lead ZirconateT...iosrjce
IOSR Journal of Applied Physics (IOSR-JAP) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of physics and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in applied physics. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Networked Data Acquisition System using RTD, RH sensors, DAQ card, Resistor, LabVIEW software and OFC communication cable for Indian Black Tea Manufacturing Process for improvement the efficiency and productivity.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Use of spark for proteomic scoring seattle presentationlordjoe
Slides presented to the Seattle Spark Meetup on August 12 2015 - Note the work on Accumulators is a separate GitHub project https://github.com/lordjoe/SparkAccumulators
Holographic memory came into existence to provide service of high data volume devices & increase their data transfer rate for processing by ultra speed microprocessor
Structural and Dielectric Studies of Cerium Substituted Nickel Ferrite Nano P...theijes
Cerium substituted Nickel ferrite nanoparticles with general formula NiCeXFe2-XO4 (x=0.0, 0.05, 0.1, 0.15) have been synthesized by using sol-gel method. The crystalline structure and grain size of these particles were analyzed by using XRD; the particle size ranged from 12.22nm to 17.60nm.The decrease in value of the lattice parameter with doping suggests that there is shrinkage in unit cell. The single-phase cubic spinal structure was clearly indicated by the XRD patterns of pure NiFe2O4.The XRD pattern also show that all the samples had formed the cubic single phase spinal structure. Dielectric properties have been studied in the frequency range of 1 kHz to 5 MHz. Permittivity and tangent loss (tanδ) decreases with the substitution of Ce3+ in parent crystal structure.
Cooper Environmental’s Xact® 625i is designed for high time resolution
multi-metals monitoring of ambient air, with detection limits that rival
those of laboratory analysis. The Xact® 625i comes standard with a
solid-state meteorological sensor and Cooper Environmental’s proprietary ADAPT analysis package, making the instrument one of the most
powerful air pollution source detection offerings in the industry
Networked Data Acquisition System using RTD, RH sensors, DAQ card, Resistor, LabVIEW software and OFC communication cable for Indian Black Tea Manufacturing Process for improvement the efficiency and productivity.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Use of spark for proteomic scoring seattle presentationlordjoe
Slides presented to the Seattle Spark Meetup on August 12 2015 - Note the work on Accumulators is a separate GitHub project https://github.com/lordjoe/SparkAccumulators
Holographic memory came into existence to provide service of high data volume devices & increase their data transfer rate for processing by ultra speed microprocessor
Structural and Dielectric Studies of Cerium Substituted Nickel Ferrite Nano P...theijes
Cerium substituted Nickel ferrite nanoparticles with general formula NiCeXFe2-XO4 (x=0.0, 0.05, 0.1, 0.15) have been synthesized by using sol-gel method. The crystalline structure and grain size of these particles were analyzed by using XRD; the particle size ranged from 12.22nm to 17.60nm.The decrease in value of the lattice parameter with doping suggests that there is shrinkage in unit cell. The single-phase cubic spinal structure was clearly indicated by the XRD patterns of pure NiFe2O4.The XRD pattern also show that all the samples had formed the cubic single phase spinal structure. Dielectric properties have been studied in the frequency range of 1 kHz to 5 MHz. Permittivity and tangent loss (tanδ) decreases with the substitution of Ce3+ in parent crystal structure.
Cooper Environmental’s Xact® 625i is designed for high time resolution
multi-metals monitoring of ambient air, with detection limits that rival
those of laboratory analysis. The Xact® 625i comes standard with a
solid-state meteorological sensor and Cooper Environmental’s proprietary ADAPT analysis package, making the instrument one of the most
powerful air pollution source detection offerings in the industry
Techniques to optimize the pagerank algorithm usually fall in two categories. One is to try reducing the work per iteration, and the other is to try reducing the number of iterations. These goals are often at odds with one another. Skipping computation on vertices which have already converged has the potential to save iteration time. Skipping in-identical vertices, with the same in-links, helps reduce duplicate computations and thus could help reduce iteration time. Road networks often have chains which can be short-circuited before pagerank computation to improve performance. Final ranks of chain nodes can be easily calculated. This could reduce both the iteration time, and the number of iterations. If a graph has no dangling nodes, pagerank of each strongly connected component can be computed in topological order. This could help reduce the iteration time, no. of iterations, and also enable multi-iteration concurrency in pagerank computation. The combination of all of the above methods is the STICD algorithm. [sticd] For dynamic graphs, unchanged components whose ranks are unaffected can be skipped altogether.
Levelwise PageRank with Loop-Based Dead End Handling Strategy : SHORT REPORT ...Subhajit Sahu
Abstract — Levelwise PageRank is an alternative method of PageRank computation which decomposes the input graph into a directed acyclic block-graph of strongly connected components, and processes them in topological order, one level at a time. This enables calculation for ranks in a distributed fashion without per-iteration communication, unlike the standard method where all vertices are processed in each iteration. It however comes with a precondition of the absence of dead ends in the input graph. Here, the native non-distributed performance of Levelwise PageRank was compared against Monolithic PageRank on a CPU as well as a GPU. To ensure a fair comparison, Monolithic PageRank was also performed on a graph where vertices were split by components. Results indicate that Levelwise PageRank is about as fast as Monolithic PageRank on the CPU, but quite a bit slower on the GPU. Slowdown on the GPU is likely caused by a large submission of small workloads, and expected to be non-issue when the computation is performed on massive graphs.
As Europe's leading economic powerhouse and the fourth-largest hashtag#economy globally, Germany stands at the forefront of innovation and industrial might. Renowned for its precision engineering and high-tech sectors, Germany's economic structure is heavily supported by a robust service industry, accounting for approximately 68% of its GDP. This economic clout and strategic geopolitical stance position Germany as a focal point in the global cyber threat landscape.
In the face of escalating global tensions, particularly those emanating from geopolitical disputes with nations like hashtag#Russia and hashtag#China, hashtag#Germany has witnessed a significant uptick in targeted cyber operations. Our analysis indicates a marked increase in hashtag#cyberattack sophistication aimed at critical infrastructure and key industrial sectors. These attacks range from ransomware campaigns to hashtag#AdvancedPersistentThreats (hashtag#APTs), threatening national security and business integrity.
🔑 Key findings include:
🔍 Increased frequency and complexity of cyber threats.
🔍 Escalation of state-sponsored and criminally motivated cyber operations.
🔍 Active dark web exchanges of malicious tools and tactics.
Our comprehensive report delves into these challenges, using a blend of open-source and proprietary data collection techniques. By monitoring activity on critical networks and analyzing attack patterns, our team provides a detailed overview of the threats facing German entities.
This report aims to equip stakeholders across public and private sectors with the knowledge to enhance their defensive strategies, reduce exposure to cyber risks, and reinforce Germany's resilience against cyber threats.
2. Data Mining
What?
From Webopedia:
A class of database applications that look for hidden patterns in a
group of data that can be used to predict future behavior. The term is
commonly misused to describe software that presents data in new
ways.
True data mining software doesn't just change the presentation,
but actually discovers previously unknown relationships among the
data.
From Wikipedia:
Data mining has been defined as "the nontrivial extraction of implicit,
previously unknown, and potentially useful information from data"
and "the science of extracting useful information from large data sets
or databases".
3. Data Mining
Why?
The Powder Diffraction File (PDF) contains
diffraction, crystallographic, bibliographic, and
physical property information on ~550,000 unique
entries. This is the world’s largest collection of
structural and physical property information on
solid states materials.
Data mining can help scientist discover new
information on how materials work.
4. Data Mining
How?
The Powder Diffraction File allows users to
search by 48 different search mechanisms and
then display data using 66 fields.
The fields and display searches can be
combined and sorted – providing almost
limitless data mining combinations.
Data can be graphed in xy plots or histograms.
Multiple cards or diffraction patterns can be
displayed simultaneously.
5. Data Mining
This is the diffraction pattern taken from a specimen of a catalytic
converter. In this tutorial, this pattern will be extensively analyzed.
From this diffraction pattern you can identify the bulk composition
and quantitate the results using modern X-ray analysis techniques.
Using data mining of the PDF-4 database, you can determine solid
solution doping, the temperature of synthesis for the part, and make
reasonable assumptions about the identity and concentration of
low concentration catalysts present in the specimen.
From the above data, you can find applicable patents on the Internet
that align with the data and describe the manufacture of the part.
Overall data mining leads to a reasonable hypothesis for the
fabrication of the component and its exact composition that could be
verified, if required, with further experimentation.
6. Example
Data were collected on a commercial catalytic converter.
Very little information is known about the specimen.
The sequence is
Phase identification
Quantitation
Unit cell refinement
then
Data mining based on the above
experimentally defined parameters
The next few slides outline the sequence of events required to
solve the problem. For step-by-step procedures see the tutorials
on SIeve+
8. Identify Tetragonally Stabilized Zirconia
~ 100 A Crystallites
Identify the size through
zirconia pattern simulations
25 A
Experimental
100 A
250 A
1000 A
9. 75% Cordierite, 25% Stabilized Zirconia
Experimentally Refined Cell Parameters
Rietveld Analysis
This analysis used PANalytical HighScore Plus
for the Rietveld refinement
10. Data Mining
• Search all ZrO2 structure
• Search tetragonal space groups
• Analyze by composition, reduced cell
parameters and reduced cell volume
Plot your data! (New feature in 2007!)
Point and Click!
13. Best matches with cell dimensions
- Ce Stabilized Zirconia
- ZrO2 made at 1200 K
ZrO2
No doping
Increase w/Temperature
1/1 Ce/Zr
High Pressure
20-30 GPa
Zirconia
Refined
Unit Cell
16. Deduction
~3% RhO2 (black pattern in above simulation)
on a Ce doped tetragonally stabilized ZrO2 washcoat
used with a cordierite honeycomb substrate
Substrate is large crystallite size, washcoat is small crystallite size
Consistent with XRD data, but also consistent with patent
literature researched on the Internet
Experimental Data
3-Phase Simulation
17. A supported catalyst useful in the present invention was prepared as follows:
Onto a 400 cells/in2 (62 cells/cm2) cordeirite honeycomb monolith, is
deposited a catalyst washcoat underlayer of a slurry of a mixture of alumina,
ceria and zirconia to give a total deposit of 2. Og/in3 (0.12g/cm3).
The resulting monolith is fired for 1 hour in air at 500°C. A first catalyst
layer is deposited onto the monolith by impregnating the washcoated
monolith with a mixed solution of tetramine platinum dichloride and
barium acetate, to yield an intimate mixture of platinum and barium.
The barium acetate is deposited at a loading of 800g/ft3 of Ba (28g/litre)
and the platinum is deposited at a loading of 100g/ft 3of Pt (3.5g/litre).
The monolith is fired again under the same conditions. A second
washcoat layer is then deposited to yield a deposit of 1. Og/in3
(0.06g/cm3) of ceria-stabilized zirconia (11% Ce02,89% ZrO2)
in admixture with a solution of rhodium nitrate, to yield a deposit
of 6g/ft3 (0.21 g/litre) of Rh in the second washcoat layer.
The treated monolith is fired again under the same conditions and then
a second impregnation is carried out using cerium acetate solution to
deposit 400g/ft3 (14g/litre) of Ce. The monolith is fired again under the
same conditions
World Intellectual Property Organization
Result of an Internet Search
18. Conclusions
• The XRD pattern directly yields the identification of cordierite and
zirconia and their respective crystallite sizes from an analysis of peak
locations and profiles.
• Rietveld refinement provides a quantitative analysis and refined cell
parameters which results in the identification of Ce doping in the zirconia
unit cell.
• Data mining results in a concentration for the zirconia doping and a
synthesis temperature for the cordierite and zirconia by references to the
known literature data in PDF-4+.
• The above data can be used on a search on the internet, which identifies
catalytic converters having these components
• Converter patents indicate that Rh, Pt and Pd are likely catalysts.
RhO2 does fit as a minor (~3%) phase, other oxides are possible but are
heavily overlapped with the zirconia pattern.
Based on the above, additional analyses should be able to confirm the
synthesis route and other phases present in the specimen.
19. Thank you for viewing our
tutorial. Additional tutorials are
available at the ICDD web site
(www.icdd.com).
International Centre for Diffraction Data
12 Campus Boulevard
Newtown Square, PA 19073
Phone: 610.325.9814
Fax: 610.325.9823