A new Approach for the Preparation of High Quality CdTe Nanocrystals and their Optical Characterization

2019 ◽  
Vol 2 (20) ◽  
pp. 79-86
Author(s):  
Ruth Osovsky ◽  
Viki Kloper ◽  
Joanna Kolny-Olesiak ◽  
Aldona Sashchiuk ◽  
Efrat Lifshitz
Keyword(s):  
Optical Characterization ◽  
High Quality ◽  
New Approach ◽  
Cdte Nanocrystals

scholarly journals Measuring capabilities of zero-inflated processes

2021 ◽  
Vol 13 (3) ◽  
pp. 37-48
Author(s):  
Surajit Pal ◽  
Susanta Kumar Gauri
Keyword(s):  
Negative Binomial ◽  
Process Capability ◽  
Process Capability Index ◽  
High Quality ◽  
New Approach ◽  
Capability Index ◽  
Count Distribution ◽  
Set Up

The high-quality processes usually have more count of zeros than are expected under chance variation of its underlying Poisson or other count distribution. Therefore, these processes are usually referred to as zero-inflated processes. The zeroinflated processes are commonly modelled by zero-inflated Poisson (ZIP) or zero-inflated negative binomial (ZINB) distribution. In a manufacturing set up, the evaluation of process capability index of a zero-inflated process can be useful in many ways, e.g. i) predicting how well the process will hold the specifications, ii) selecting between competing vendors, and iii) assisting product developers/designers in modifying the process, etc. However, researchers have given very little attentions on this aspect of zero-inflated processes. Only one such attempt is reported in literature. But, it does not always represent the true capabilities of zero-inflated processes, and sometimes it may give very misleading impression about the capability of the concerned process. In this article, the concept of Borges and Ho (2001) is applied to zero-inflated processes and a new approach for computation of process capability index of zero-inflated processes is developed. The proposed method reveals the true capabilities of zero-inflated processes consistently. Application of the proposed approach and its effectiveness are illustrated using two datasets published by past researchers.

A New Approach Using Artificial Substrates for Growth of High-Quality Precipitate-Free HTS Thin Films, Toward Electronic Device Applications

2005 ◽  
Vol 868 ◽  
Author(s):  
K. Endo ◽  
P. Badica ◽  
H. Sato ◽  
H. Akoh
Keyword(s):  
Thin Films ◽  
Electronic Device ◽  
Growth Conditions ◽  
Device Fabrication ◽  
Artificial Substrates ◽  
High Quality ◽  
New Approach ◽  
Mesa Structure ◽  
Device Applications ◽  
And Performance

AbstractHigh quality thin films of HTS have been grown by MOCVD on substrates with artificial steps of predefined height and width. The surface of the films grown on the steps having width equal to the ‘double of the migration length' of the atomic species depositing on the substrate is totally free of precipitates: precipitates are gathered at the step edges where the free energy is lowest. The method has several advantages: it is simple, universal (it is independent of the materials, substrates, deposition technique or application) and allows control of precipitates segregates so that the quality and growth conditions of the films are the same as for the films grown on conventional substrates. The method is expected to result in new opportunities for the device fabrication, design and performance. As an example we present successful fabrication of a mesa structure showing intrinsic Josephson effect. We have used thin films of Bi-2212/Bi-2223 superstructure grown on (001) SrTiO3 single crystal substrates with artificial steps of 20 μm.

Protocol-Based Multi-Agent Systems: Examining the Effect of Diversity, Dynamism, and Cooperation in Heuristic Optimization Approaches

2010 ◽  
Author(s):  
Lindsay Hanna ◽  
Jonathan Cagan
Keyword(s):  
Search Strategies ◽  
Heuristic Optimization ◽  
Multi Agent Systems ◽  
Review Of The Literature ◽  
High Quality ◽  
New Approach ◽  
Agent Systems ◽  
Engineering Problems ◽  
Multi Agent ◽  
Immense Potential

Many heuristic optimization approaches have been developed to combat the ever-increasing complexity of engineering problems. In general, these approaches can be classified based on the diversity of the search strategies used, the amount of change to those search strategies during the optimization process, and the level of cooperation between the strategies. A review of the literature indicates that approaches which are simultaneously very diverse, highly dynamic, and cooperative are rare but have immense potential for finding high quality final solutions. In this work, a taxonomy of heuristic optimization approaches is introduced and used to motivate a new approach, entitled Protocol-based Multi-Agent Systems. This approach is found to produce final solutions of much higher quality when its implementation includes the use of multiple search protocols, the adaptation of those protocols during the optimization, and the cooperation between the protocols than when these characteristics are absent.

Language-Independent Type Inference of the Instances from Multilingual Wikipedia

2019 ◽  
Vol 15 (2) ◽  
pp. 22-46 ◽  
Author(s):  
Tianxing Wu ◽  
Guilin Qi ◽  
Bin Luo ◽  
Lei Zhang ◽  
Haofen Wang
Keyword(s):  
Knowledge Base ◽  
State Of The Art ◽  
The State ◽  
Type Inference ◽  
Experimental Results ◽  
High Quality ◽  
New Approach ◽  
Semantic Associations ◽  
Quality Type ◽  
Type Information

Extracting knowledge from Wikipedia has attracted much attention in recent ten years. One of the most valuable kinds of knowledge is type information, which refers to the axioms stating that an instance is of a certain type. Current approaches for inferring the types of instances from Wikipedia mainly rely on some language-specific rules. Since these rules cannot catch the semantic associations between instances and classes (i.e. candidate types), it may lead to mistakes and omissions in the process of type inference. The authors propose a new approach leveraging attributes to perform language-independent type inference of the instances from Wikipedia. The proposed approach is applied to the whole English and Chinese Wikipedia, which results in the first version of MulType (Multilingual Type Information), a knowledge base describing the types of instances from multilingual Wikipedia. Experimental results show that not only the proposed approach outperforms the state-of-the-art comparison methods, but also MulType contains lots of new and high-quality type information.

Development of System for High Quality Wood Grain Design

2011 ◽  
Author(s):  
Takuya Mori ◽  
Satoshi Shibasaki ◽  
Hideki Aoyama
Keyword(s):  
Computer Graphics ◽  
Tree Growth ◽  
Wood Surface ◽  
Environmental Conditions ◽  
Tree Species ◽  
Growth Conditions ◽  
High Quality ◽  
New Approach ◽  
Conventional Methods ◽  
Wood Grain

Various approaches for generating woodgrain patterns using computer graphics have been proposed so far. However, it is difficult to reproduce real woodgrain patterns using such conventional methods. In this paper, a new approach for generating woodgrain patterns is proposed. Virtual trees are generated by simulating tree growth in consideration of environmental conditions. Moreover, fine tree tissues and reflection properties at the wood surface are modeled. By applying these modeled factors, more diverse and accurate woodgrain patterns can be generated. With this approach, various types of virtual trees can be obtained by changing growth conditions such as period and location of growth or form of tissue in trees without the need to reset complicated parameters of each tree species. After this, the virtual trees can be cut at arbitrary areas, thus allowing a variety of woodgrain patterns to be generated by easy parameter setup.

Correcting Biases in Historical Bathythermograph Data Using Artificial Neural Networks

2020 ◽  
Vol 37 (10) ◽  
pp. 1781-1800
Author(s):  
Aaron Bagnell ◽  
Timothy DeVries
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Heat Content ◽  
Temperature Measurements ◽  
Multiple Sources ◽  
High Quality ◽  
New Approach ◽  
Calibration Methods ◽  
Artificial Neural ◽  
Instrument Comparison

AbstractHistorical estimates of ocean heat content (OHC) are important for understanding the climate sensitivity of the Earth system and for tracking changes in Earth’s energy balance over time. Prior to 2004, these estimates rely primarily on temperature measurements from mechanical and expendable bathythermograph (BT) instruments that were deployed on large scales by naval vessels and ships of opportunity. These BT temperature measurements are subject to well-documented biases, but even the best calibration methods still exhibit residual biases when compared with high-quality temperature datasets. Here, we use a new approach to reduce biases in historical BT data after binning them to a regular grid such as would be used for estimating OHC. Our method consists of an ensemble of artificial neural networks that corrects biases with respect to depth, year, and water temperature in the top 10 m. A global correction and corrections optimized to specific BT probe types are presented for the top 1800 m. Our approach differs from most prior studies by accounting for multiple sources of error in a single correction instead of separating the bias into several independent components. These new global and probe-specific corrections perform on par with widely used calibration methods on a series of metrics that examine the residual temperature biases with respect to a high-quality reference dataset. However, distinct patterns emerge across these various calibration methods when they are extrapolated to BT data that are not included in our cross-instrument comparison, contributing to uncertainty that will ultimately impact estimates of OHC.

A PARALLEL SCHEDULING ALGORITHM FOR TREE STRUCTURED INTERCONNECTION NETWORKS

1996 ◽  
Vol 06 (01) ◽  
pp. 45-54 ◽  
Author(s):  
MIN-YOU WU
Keyword(s):  
Load Balancing ◽  
Interconnection Networks ◽  
Dynamic Scheduling ◽  
Scheduling Algorithm ◽  
Tree Topology ◽  
Alternative Strategy ◽  
Parallel Scheduling ◽  
High Quality ◽  
New Approach

Global parallel scheduling is a new approach for runtime load balancing. In parallel scheduling, all processors cooperate together to schedule work. Parallel scheduling accurately balances the load by using global load information. As an alternative strategy to the commonly used dynamic scheduling, it provides a high-quality, low-overhead load balancing. This paper presents a parallel scheduling algorithm for interconnection networks of the tree topology. This algorithm minimizes communications and maximize locality.

Synthesis and optical characterization of a high-quality ZnS substrate for optoelectronics and UV solar-energy conversion

RSC Advances ◽  
2016 ◽  
Vol 6 (84) ◽  
pp. 81053-81059 ◽  
Author(s):  
Ching-Hwa Ho ◽  
Min-Han Lin
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
Optical Characterization ◽  
Band Edge ◽  
Band Edge Emission ◽  
High Grade ◽  
Edge Emission ◽  
High Quality ◽  
Strong Band

A high-grade cubic ZnS substrate crystal with longer range order and a strong band-edge emission was clearly demonstrated.

Sign in / Sign up

Export Citation Format

Share Document