Sizing and Positioning Algorithm for 1 µm to 10 µm Particles Using Shadowgraphy

2013 ◽  
Author(s):  
Michael J. Robinson ◽  
Zakaria Mahmud ◽  
Orven F. Swenson ◽  
Justin Hoey
Keyword(s):  
Relative Position ◽  
Scientific Community ◽  
Aerosol Particles ◽  
Measurement Range ◽  
Object Plane ◽  
The Past ◽  
Current State ◽  
Imaging Camera ◽  
Positioning Algorithm ◽  
State Of Art

Measuring flows of aerosol particles of less than 10 μm diameter has proven a challenge in the past. Previously, our work included a brief review of the current state-of-art for aerosol measurements where accurate sizing was limited to particles greater than 5 μm. We developed a sizing and positioning algorithm (SPA) to accurately calculate both the diameter of a spherical particle, and the relative position of that particle to the object plane of the imaging camera for particles down to 3 μm in diameter. Our current work further extends the measurement range down to 1 μm particles. This algorithm has great benefit for the scientific community interested in small-particle aerosol flows.

The History and Future of Scientific Publishing

2020 ◽  
pp. 10-33
Author(s):  
Alan Kelly
Keyword(s):  
Sixteenth Century ◽  
Open Access ◽  
Scientific Community ◽  
Scientific Information ◽  
Scientific Paper ◽  
Scientific Journals ◽  
Scientific Publishing ◽  
The Past ◽  
Current State ◽  
Open Access Journals

This chapter reviews the development of the modern scientific paper, from the sixteenth century forward, and explores the ways in which scientific information has been disseminated in the past. Great scientific advances of the past are discussed in the context of how they were first published, or otherwise brought to the attention of the broader scientific community, and the modern scientific publishing sector is explored. The types and categories of scientific journals are discussed, along with an overview of current publishing trends, such as the exponential increase in number of journals, changes in the ways in which researchers access the literature, and in particular the emergence and current state of open access journals. In addition, various ways in which journals are ranked are discussed, and key trends in such lists over the last ten years or so explored.

scholarly journals Habitability of Mars: How Welcoming Are the Surface and Subsurface to Life on the Red Planet?

Geosciences ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 361
Author(s):  
Aleksandra Checinska Sielaff ◽  
Stephanie A. Smith
Keyword(s):  
Scientific Community ◽  
Extreme Environments ◽  
Environmental Studies ◽  
Future Research ◽  
Martian Surface ◽  
Microbial Life ◽  
Subglacial Lake ◽  
The Past ◽  
Current State ◽  
Present Life

Mars is a planet of great interest in the search for signatures of past or present life beyond Earth. The years of research, and more advanced instrumentation, have yielded a lot of evidence which may be considered by the scientific community as proof of past or present habitability of Mars. Recent discoveries including seasonal methane releases and a subglacial lake are exciting, yet challenging findings. Concurrently, laboratory and environmental studies on the limits of microbial life in extreme environments on Earth broaden our knowledge of the possibility of Mars habitability. In this review, we aim to: (1) Discuss the characteristics of the Martian surface and subsurface that may be conducive to habitability either in the past or at present; (2) discuss laboratory-based studies on Earth that provide us with discoveries on the limits of life; and (3) summarize the current state of knowledge in terms of direction for future research.

scholarly journals Mapping out Methodological Approaches to Russian Symbolism (on the Example of Vyacheslav Ivanov)

2020 ◽  
Vol 5 (4) ◽  
pp. 38-65
Author(s):  
Svetlana V. Fedotova
Keyword(s):  
Literary History ◽  
Silver Age ◽  
The Past ◽  
Current State ◽  
Russian Symbolism ◽  
Russian Literary ◽  
Novel Approaches ◽  
Methodological Approaches ◽  
Vyacheslav Ivanov ◽  
State Of Art

This article is a multidimensional study of Russian symbolism as one of the most prominent 20th century literary schools that had a major impact on the development of Russian modernism. The current state of art in the field of modernism is relevant in the context of the metamodern paradigm. The article specifically focuses on the figure of Vyacheslav Ivanov, symbolist poet, leading theoretician of this literary school, and religious thinker who played important role in the development of the so-called Silver Age in Russian literary history. The purpose of the article is to map out methodological approaches, representative of contemporary studies of Vyach. Ivanov. The study bears on the corpus of the most interesting works on Ivanov in the past decades. It demonstrates that besides traditional philological readings, there are a number of novel approaches to the poet’s heritage based on philosophical, linguophilosophical, cultural, religious-axiological, psychoanalytic, hermeneutic, intertextual, or comparative perspective.

Current state and main directions of preservation and strengthening of health of the working population of Russia

2020 ◽  
pp. 527-532 ◽  
Author(s):  
I. V. Bukhtiyarov
Keyword(s):  
Working Conditions ◽  
Russian Federation ◽  
Production Environment ◽  
Working Population ◽  
Industrial Enterprises ◽  
The Past ◽  
Production Factors ◽  
Current State ◽  
The Russian Federation

The article presents the results of the analysis of health, working conditions and prevalence of adverse production factors, the structure of the detected occupational pathology in the working population of the Russian Federation. The article presents Statistical data on the dynamics of the share of workplaces of industrial enterprises that do not meet hygienic standards, occupational morbidity in 2015-2018 for the main groups of adverse factors of the production environment and the labor process. The indicators of occupational morbidity over the past 6 years in the context of the main types of economic activity, individual subjects of the Russian Federation, classes of working conditions, levels of specialized occupational health care. The role of the research Institute of occupational pathology and occupational pathology centers in solving organizational, methodological and practical tasks for the detection, treatment, rehabilitation and prevention of occupational diseases is shown. The basic directions of activity in the field of preservation and strengthening of health of workers, and also safety at a workplace are defined.

Phytochemical and Pharmacological Review on Two Herbs of Baijiangcao: Patrinia scabiosaefolia Fisch. ex Trev. and Patrinia villosa (Thunb.) Juss

2020 ◽  
Vol 17 (5) ◽  
pp. 496-517
Author(s):  
Yangcheng Liu ◽  
Wei Liu ◽  
Jiaqi Wang ◽  
Yang Liu ◽  
Changlan Chen ◽  
...  
Keyword(s):  
Chemical Constituents ◽  
Volatile Components ◽  
Research Papers ◽  
Pharmacological Activities ◽  
Comprehensive Review ◽  
Scientific Databases ◽  
The Past ◽  
Current State ◽  
Patrinia Scabiosaefolia ◽  
Antiviral Activities

Patrinia scabiosaefolia Fisch. Trev. and Patrinia villosa (Thunb.) Juss, are two species of Patrinia recorded in the Chinese Pharmacopoeia with the same Chinese name “Baijiangcao” and similar therapeutic effect in traditional Chinese medicine. The present article is the first comprehensive review on the chemical composition and pharmacological activities of these herbs. In this review, data on chemical constituents and pharmacological profile of the two herbs are provided. This review discusses all the classes of the 223 compounds (phenylpropanoids, flavonoids, terpenes, saponins and volatile components, etc.) detected in the two herbs providing information on the current state of knowledge of the phytochemicals present in them. In the past three years, our research group has isolated and identified about more than 100 ingredients from the two herbs. Therefore, we published a systematic review of our research papers and studies on the two herbs were carried out using resources such as classic books about Chinese herbal medicine and scientific databases including Pubmed, Web of Science, SciFinder, CNKI. etc. The present review discusses the most thoroughly studied pharmacological activities (antioxidant, anti-inflammatory, immunomodulatory, antimicrobial, antitumor and antiviral activities) of the two herbs. This comprehensive review will be informative for scientists searching for new properties of these herbs and will be important and significant for the discovery of bioactive compounds from the two herbs and in complete utilization of Patrinia scabiosaefolia Fisch. ex Trev. and Patrinia villosa (Thunb.) Juss.

Movie Envy

2019 ◽  
pp. 70-80
Author(s):  
Olivier Asselin
Keyword(s):  
Point Of View ◽  
Digital Revolution ◽  
The Past ◽  
Current State ◽  
Movie Theatre ◽  
The Relationship

“Canadian cinema.” The term may appear self-evident but is problematic. First, one may question the value of national approaches to culture, especially here, in Quebec and Canada, where the debates over the Nation seem interminable, and especially now, in an era of globalization. Next, one may question the value of media-centered approaches to culture, especially when the successive waves of the “digital revolution” have blurred the boundaries between technologies and among artistic practices. Rather than try to survey “important” fiction films for theatres in Quebec or Canada, this essay adopts another point of view to examine the presence of cinema in Montreal museums over the past few years by focusing on three singular exhibitions. It may well be symptomatic of the current state of film in Quebec and Canada—but also, paradoxically, everywhere else—and says much about the relationship between medium and nation, the expansion of cinema beyond the movie theatre, and the internationalization of culture.

Effective splicing localization based on noise level inconsistencies

2021 ◽  
pp. 1-11
Author(s):  
P. N. R. L. Chandra Sekhar Author ◽  
T. N. Shankar Author
Keyword(s):  
Digital Technology ◽  
Social Networking Sites ◽  
Noise Level ◽  
Research Work ◽  
Multimedia Content ◽  
Noise Levels ◽  
Multimedia Forensics ◽  
The Past ◽  
Photo Editing ◽  
State Of Art

In the era of digital technology, it becomes easy to share photographs and videos using smartphones and social networking sites to their loved ones. On the other hand, many photo editing tools evolved to make it effortless to alter multimedia content. It makes people accustomed to modifying their photographs or videos either for fun or extracting attention from others. This altering brings a questionable validity and integrity to the kind of multimedia content shared over the internet when used as evidence in Journalism and Court of Law. In multimedia forensics, intense research work is underway over the past two decades to bring trustworthiness to the multimedia content. This paper proposes an efficient way of identifying the manipulated region based on Noise Level inconsistencies of spliced mage. The spliced image segmented into irregular objects and extracts the noise features in both pixel and residual domains. The manipulated region is then exposed based on the cosine similarity of noise levels among pairs of individual objects. The experimental results reveal the effectiveness of the proposed method over other state-of-art methods.

scholarly journals Multi-Task Optimization and Multi-Task Evolutionary Computation in the Past Five Years: A Brief Review

Mathematics ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 864
Author(s):  
Qingzheng Xu ◽  
Na Wang ◽  
Lei Wang ◽  
Wei Li ◽  
Qian Sun
Keyword(s):  
Evolutionary Computation ◽  
Explicit Knowledge ◽  
Optimization Problems ◽  
Effective Means ◽  
Typical Application ◽  
The Past ◽  
Current State ◽  
Evolution Algorithms ◽  
Application Fields

Traditional evolution algorithms tend to start the search from scratch. However, real-world problems seldom exist in isolation and humans effectively manage and execute multiple tasks at the same time. Inspired by this concept, the paradigm of multi-task evolutionary computation (MTEC) has recently emerged as an effective means of facilitating implicit or explicit knowledge transfer across optimization tasks, thereby potentially accelerating convergence and improving the quality of solutions for multi-task optimization problems. An increasing number of works have thus been proposed since 2016. The authors collect the abundant specialized literature related to this novel optimization paradigm that was published in the past five years. The quantity of papers, the nationality of authors, and the important professional publications are analyzed by a statistical method. As a survey on state-of-the-art of research on this topic, this review article covers basic concepts, theoretical foundation, basic implementation approaches of MTEC, related extension issues of MTEC, and typical application fields in science and engineering. In particular, several approaches of chromosome encoding and decoding, intro-population reproduction, inter-population reproduction, and evaluation and selection are reviewed when developing an effective MTEC algorithm. A number of open challenges to date, along with promising directions that can be undertaken to help move it forward in the future, are also discussed according to the current state. The principal purpose is to provide a comprehensive review and examination of MTEC for researchers in this community, as well as promote more practitioners working in the related fields to be involved in this fascinating territory.

scholarly journals Scientific literacy, public engagement and responsibility in science

2021 ◽  
pp. 209660832110096
Author(s):  
Daya Reddy
Keyword(s):  
Public Good ◽  
Genome Editing ◽  
Public Engagement ◽  
Scientific Literacy ◽  
Scientific Community ◽  
Global Public Good ◽  
Public Communication ◽  
Digital Revolution ◽  
The Past ◽  
Responsibility Of Scientists

This work addresses the issue of scientific literacy and its connection to the responsibility of scientists in relation to public engagement. The points of departure are, first, the notion of science as a global public good, and, second, developments in the past few decades driven largely by the digital revolution. The latter lend a particular urgency to initiatives aimed at promoting scientific literacy. Arguments are presented for reassessing approaches to public communication. The particular example of genome editing is provided as a vehicle for highlighting the challenges in engagement involving the scientific community, policymakers and broader society.

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