scholarly journals Hydrodynamic State of Art Review: Rotor – Stator Marine Propulsor Systems Design

2021 ◽  
Vol 28 (1) ◽  
pp. 72-82
Author(s):  
Przemysław Król
Keyword(s):  
System Design ◽  
Energy Saving ◽  
State Of The Art ◽  
Systems Design ◽  
Design Criteria ◽  
Efficiency Gain ◽  
Current State ◽  
Screw Propeller ◽  
Marine Propulsor ◽  
State Of Art

Abstract The paper covers the important topic of rotor–stator propulsor system design and operation. For the stand-alone marine screw propeller, both the design criteria for loading distribution and the theoretical efficiency limits are well described in the basic literature. This is in contrast to the combined propulsor system like a propeller cooperating with a pre-swirl device. The paper describes the current state of the art, summarising results obtained by various researchers by installing energy-saving devices on particular vessels. The design methods utilised are briefly outlined, with the main characteristics underlined. Rough analysis of the gathered data confirms the expected trend that a higher efficiency gain due to ESD installation is possible for a higher propeller loading.

Understanding Innovation: A Study of Perspectives and Perceptions in Engineering

2011 ◽  
Author(s):  
Jarden Krager ◽  
Kristin L. Wood ◽  
Richard H. Crawford ◽  
Dan Jensen ◽  
Jonathan Cagan ◽  
...  
Keyword(s):  
State Of The Art ◽  
Systems Design ◽  
Specific Group ◽  
Current State ◽  
Analysis Methods ◽  
Essential Components ◽  
Participant Group ◽  
Innovation Practices ◽  
Short Answer Questions ◽  
Innovation Processes

Well developed innovation processes are essential components for continued success of product and systems design throughout industry. Such processes build upon research advancements in innovation techniques and methods. To create such techniques and methods, studies are needed to examine the current state-of-the-art, as well as the corresponding teaching of such innovation processes in higher education. This paper contributes to this effort by studying a specific group of innovation researchers, teachers, and practitioners. The study was created to probe this group of leaders in the engineering design domain using technical, demographic, and short answer questions. Various analysis methods are used to obtain a fundamental view of the answers to these questions with respect to the demographics of the participant group. Two deductive analysis methods are used, in addition to an inductive approach, consisting of a correlation analysis to compare responses to questions and understand trends across the participants. Results from the analyses emphasize the current perceptions of innovation by the participants and opportunities to refine research in improving innovation practices.

scholarly journals Game Science: Foundations and Perspectives

2018 ◽  
Vol 49 (3) ◽  
pp. 199-206 ◽  
Author(s):  
Willy C. Kriz ◽  
J. Tuomas Harviainen ◽  
Timothy C. Clapper
Keyword(s):  
State Of The Art ◽  
Social Systems ◽  
Systems Design ◽  
The Body ◽  
Game Studies ◽  
Body Of Knowledge ◽  
Gaming Simulation ◽  
Current State ◽  
Introductory Article ◽  
Social Systems Design

Background. Game studies offer cross-disciplinary perspectives, but the body of knowledge is not yet in the form of a cohesive game science paradigm. Klabbers (2018a) argues that a comprehensive and coherent view on game science is needed that connects three levels of inquiry: the philosophy of science level, the science level, and the application level. Aim. This single-theme symposium issue On the Architecture of Game Science is especially devoted to the reflection and discussion on the foundations and principles of gaming and simulation. Method. Raising a debate among scholars and professionals, addressing the questions and frame-of-reference presented in the introductory article of Klabbers (2018a) and completed by his rebuttal. Results. The contributions range from the linkages between game science and complex social systems design through gaming simulation, to gamification science, and game studies, focusing on the ludosphere and the growing field of digital games. Conclusion. The articles present an overview of the current state of the art, craft, and science of gaming simulation, gamification and game studies. They present a stimulating and challenging debate, and a good basis for advancing the principles and foundations of game science.

Nanofibrillated polymer systems: Design, application, and current state of the art

2021 ◽  
Vol 113 ◽  
pp. 101346
Author(s):  
Andrew Anstey ◽  
Eunse Chang ◽  
Eric S. Kim ◽  
Ali Rizvi ◽  
Adel Ramezani Kakroodi ◽  
...  
Keyword(s):  
State Of The Art ◽  
Systems Design ◽  
Polymer Systems ◽  
Current State

scholarly journals Learning Unsupervised Visual Grounding Through Semantic Self-Supervision

2019 ◽  
Author(s):  
Syed Ashar Javed ◽  
Shreyas Saxena ◽  
Vineet Gandhi
Keyword(s):  
Natural Language ◽  
Concept Learning ◽  
State Of The Art ◽  
Semantic Property ◽  
Challenging Problem ◽  
Current State ◽  
Art Performance ◽  
State Of Art ◽  
Genome Dataset

Localizing natural language phrases in images is a challenging problem that requires joint understanding of both the textual and visual modalities. In the unsupervised setting, lack of supervisory signals exacerbate this difficulty. In this paper, we propose a novel framework for unsupervised visual grounding which uses concept learning as a proxy task to obtain self-supervision. The intuition behind this idea is to encourage the model to localize to regions which can explain some semantic property in the data, in our case, the property being the presence of a concept in a set of images. We present thorough quantitative and qualitative experiments to demonstrate the efficacy of our approach and show a 5.6% improvement over the current state of the art on Visual Genome dataset, a 5.8% improvement on the ReferItGame dataset and comparable to state-of-art performance on the Flickr30k dataset.

Behavioral Genetics: Concepts for Research and Practice in Language Development and Disorders

1995 ◽  
Vol 38 (5) ◽  
pp. 1126-1142 ◽  
Author(s):  
Jeffrey W. Gilger
Keyword(s):  
Language Development ◽  
Behavioral Genetics ◽  
State Of The Art ◽  
Genetic Research ◽  
Great Promise ◽  
Behavioral Genetic ◽  
Fine Grained ◽  
Future Goals ◽  
Current State ◽  
Research Designs

This paper is an introduction to behavioral genetics for researchers and practioners in language development and disorders. The specific aims are to illustrate some essential concepts and to show how behavioral genetic research can be applied to the language sciences. Past genetic research on language-related traits has tended to focus on simple etiology (i.e., the heritability or familiality of language skills). The current state of the art, however, suggests that great promise lies in addressing more complex questions through behavioral genetic paradigms. In terms of future goals it is suggested that: (a) more behavioral genetic work of all types should be done—including replications and expansions of preliminary studies already in print; (b) work should focus on fine-grained, theory-based phenotypes with research designs that can address complex questions in language development; and (c) work in this area should utilize a variety of samples and methods (e.g., twin and family samples, heritability and segregation analyses, linkage and association tests, etc.).

Schizophrenia Research: Current State of the Art

1976 ◽  
Vol 21 (7) ◽  
pp. 497-498
Author(s):  
STANLEY GRAND
Keyword(s):  
State Of The Art ◽  
Current State

Current State of Human Factors in Systems Design

2011 ◽  
Author(s):  
Karen Feigh ◽  
Zarrin Chua ◽  
Chaya Garg ◽  
Alan Jacobsen ◽  
John O'Hara ◽  
...  
Keyword(s):  
Human Factors ◽  
Systems Design ◽  
Current State

Umbral Calculus

10.37236/24 ◽  
2002 ◽  
Vol 1000 ◽  
Author(s):  
A. Di Bucchianico ◽  
D. Loeb
Keyword(s):  
19Th Century ◽  
Finite Differences ◽  
State Of The Art ◽  
Umbral Calculus ◽  
Current State ◽  
Logical Foundation ◽  
Complete Bibliography ◽  
The 19Th Century ◽  
Mathematical Literature

We survey the mathematical literature on umbral calculus (otherwise known as the calculus of finite differences) from its roots in the 19th century (and earlier) as a set of “magic rules” for lowering and raising indices, through its rebirth in the 1970’s as Rota’s school set it on a firm logical foundation using operator methods, to the current state of the art with numerous generalizations and applications. The survey itself is complemented by a fairly complete bibliography (over 500 references) which we expect to update regularly.

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