scholarly journals Matching Criterion of Submersible Mixer and Pool

2014 ◽  
Vol 6 ◽  
pp. 940904
Author(s):  
Fei Tian ◽  
Weidong Shi ◽  
Hua Jiang
Keyword(s):  
Critical Dimension ◽  
Difficult Problem ◽  
Engineering Practice ◽  
Matching Problem ◽  
Matching Criterion ◽  
Depth Study ◽  
Flow Field Characteristics ◽  
Length Width ◽  
Relationship Of ◽  
Selection Of

Matching problem of submersible mixer and pool has been a difficult problem. Based on in-depth study of the flow field characteristics of a submersible mixer, combined with fluid mechanics theory, the matching problem is discussed in this paper. Calculation formulas of the axial advance distance x and effective stirring radius R are obtained; meanwhile the critical dimension of matched pool is proposed: length × width × height = xv0.3 × 2 k1 Rv0.3 × 2 k2 Rv0.3, and calculation formula of the critical impeller diameter Dcritical is obtained. They are theoretical foundation of matching criterion between pool and submersible mixer. Matching relationship of pool and submersible mixer is widely used in engineering practice with the help of experiment and CFD numerical simulation, and it can provide significant help for the selection of a submersible mixer.

Цифровая морфометрия разнокачественности семян овощных культур

2018 ◽  
Author(s):  
F.B. Musaev ◽  
N.S. Priyatkin ◽  
M.V. Arkhipov ◽  
P.A. Shchukina ◽  
A.F. Bukharov ◽  
...  
Keyword(s):  
Seed Quality ◽  
Image Analysis System ◽  
Flatbed Scanner ◽  
The Future ◽  
Scanned Images ◽  
Computer Morphometry ◽  
Analysis System ◽  
Matrix Heterogeneity ◽  
Relationship Of ◽  
Selection Of

Приведено описание разработанной авторами методики цифровой компьютерной морфометрии семян овощных культур на основе системы анализа изображений, состоящей из планшетного сканера и программного обеспечения для автоматических измерений. В основу метода положено представление о разнокачественности семян, обусловленной генетической неоднородностью самих семенных растений, используемых в промышленном семеноводстве. Физические свойства семян (их форма и линейные размеры) – основные параметры при определении их качества. Цифровые изображения семян получены при помощи планшетного сканера HP Sсanjet 200 на базе Агрофизического НИИ с использованием серийного программного обеспечения «Argus-BIO», производства ООО «АргусСофт» (г. Санкт-Петербург). Метод состоит из подбора контрастной подложки (фона) для сканирования семян с минимальными теневыми эффектами, калибровку программного обеспечения для привязки к истинным размерным величинам, подбор параметров измерений и автоматическое распознавание цифровых сканированных изображений семян. Представлены экспериментальные данные по морфометрии экологически разнокачественных семян фасоли овощной, матрикально разнокачественных семян укропа, пастернака и лука Кристофа. Семена укропа и пастернака, собранные из разных порядков ветвления семенного растения, значительно различались по величине линейных параметров. Наиболее показательный линейный параметр семян – площадь проекции. Предложенная авторами методика цифровой морфометрии, уже использована на практике и в перспективе может быть задействована в исследованиях экологической и матрикальной разнокачественности семян овощных культур. Так, она прошла апробацию на разнокачественных семенах пяти сортов фасоли овощной (Настена, Магура, Миробела, Морена, Бажена) полученных в пяти контрастных эколого-географических условиях среды (Москва, Белгород, Ставрополь, Омск, Горки) в 2011–2012 годах. В дальнейшем методика может быть использована для улучшения качества цифровых изображений семян, изучения разнокачественности семян в том числе и для совершенствования контроля за селекционным процессом. Кроме того, она применима для изучения взаимосвязи совокупности морфометрических характеристик семян и их посевных качеств.The description of the method of digital computer morphometry of vegetable seeds developed by the authors on the basis of the image analysis system consisting of a flatbed scanner and software for automatic measurements is given. The method is based on the idea of seed quality, due to the genetic heterogeneity of the seed plants used in industrial seed production. Physical properties of seeds (their shape and linear dimensions) are the main parameters in determining their quality. Digital image of the seed obtained using the flatbed scanner, HP Sсanjet 200 on the basis of the Agrophysical research Institute with serial software “Argus-BIO”, produced by LLC “Argussoft” (Saint-Petersburg). The method consists of selection of a contrast substrate (background) for scanning seeds with minimal shadow effects, calibration of software for binding to true size values, selection of measurement parameters and automatic recognition of digital scanned images of seeds. Experimental data on the morphometry of ecologically different-quality seeds of vegetable beans, matrix seeds of dill, Pasternak and Christoph onion are presented. Seeds of dill and parsnip, collected from different orders of branching of the seed plant, significantly differed in size of linear parameters. The most revealing linear parameter seed – area projection. The method of digital morphometry proposed by the authors has already been used in practice and in the future can be used in studies of ecological and matrix heterogeneity of vegetable seeds. So, it was tested on different quality seeds of five varieties of vegetable beans (Nastena, Magura, Mirobelа, Morena, Bazhenf) obtained in five contrasting environmental and geographical conditions (Moscow, Belgorod, Stavropol, Omsk, Gorki) in 2011-2012. In the future, the technique can be used to improve the quality of digital images of seeds, study of seed diversity, including to improve the control of the breeding process. In addition, it is applicable to study the relationship of the set of morphometric characteristics of seeds and their sowing qualities.

scholarly journals The therapeutic mechanism of epilepsy seizures in different target areas: Research on a theoretical model

2021 ◽  
Vol 29 ◽  
pp. 455-461
Author(s):  
Bing Hu ◽  
Zhizhi Wang ◽  
Minbo Xu ◽  
Luyao Zhu ◽  
Dingjiang Wang
Keyword(s):  
Pyramidal Neurons ◽  
Control Mechanism ◽  
Difficult Problem ◽  
Calculation Model ◽  
Thalamic Reticular Nucleus ◽  
Reticular Nucleus ◽  
Theoretical Support ◽  
Therapeutic Mechanism ◽  
Optimal Target ◽  
Selection Of

BACKGROUND: The selection of optimal target areas in the surgical treatment of epilepsy is always a difficult problem in medicine. OBJECTIVE: We employed a theoretical calculation model to explore the control mechanism of seizures by an external voltage stimulus acting in different nerve nuclei. METHODS: Theoretical analysis and numerical simulation were combined. RESULTS: The globus pallidus, excitatory pyramidal neurons, striatal D1 neurons, thalamic reticular nucleus and specific relay nuclei were selected, we analyzed that the electrical stimulation has different effects in these target areas. CONCLUSIONS: The data selected were reasonable in study, the results may give a theoretical support for similar studies in clinical.

scholarly journals Multimessenger Probes for New Physics in Light of A. Sakharov’s Legacy in Cosmoparticle Physics

Universe ◽  
2021 ◽  
Vol 7 (7) ◽  
pp. 222
Author(s):  
Maxim Khlopov
Keyword(s):  
Standard Model ◽  
Particle Physics ◽  
New Physics ◽  
Physical Models ◽  
Beyond The Standard Model ◽  
Fundamental Relationship ◽  
Relationship Of ◽  
The Universe ◽  
Selection Of

A.D. Sakharov’s legacy in now standard model of the Universe is not reduced to baryosynthesis but extends to the foundation of cosmoparticle physics, which studies the fundamental relationship of cosmology and particle physics. Development of cosmoparticle physics involves cross-disciplinary physical, astrophysical and cosmological studies of physics Beyond the Standard model (BSM) of elementary particles. To probe physical models for inflation, baryosynthesis and dark matter cosmoparticle physics pays special attention to model dependent messengers of the corresponding models, making their tests possible. Positive evidence for such exotic phenomena as nuclear interacting dark atoms, primordial black holes or antimatter globular cluster in our galaxy would provide the selection of viable BSM models determination of their parameters.

scholarly journals Derivation and Performance of Standardized Enhanced Liver Fibrosis (ELF) Test Thresholds for the Detection and Prognosis of Liver Fibrosis

2019 ◽  
Vol 3 (5) ◽  
pp. 815-826 ◽  
Author(s):  
James Day ◽  
Preya Patel ◽  
Julie Parkes ◽  
William Rosenberg
Keyword(s):  
Liver Fibrosis ◽  
Delphi Panel ◽  
Test Results ◽  
Hazard Ratios ◽  
Test Thresholds ◽  
And Performance ◽  
Using Data ◽  
Relationship Of ◽  
The Relationship ◽  
Selection Of

Abstract Introduction Noninvasive tests are increasingly used to assess liver fibrosis and determine prognosis but suggested test thresholds vary. We describe the selection of standardized thresholds for the Enhanced Liver Fibrosis (ELF) test for the detection of liver fibrosis and for prognostication in chronic liver disease. Methods A Delphi method was used to identify thresholds for the ELF test to predict histological liver fibrosis stages, including cirrhosis, using data derived from 921 patients in the EUROGOLF cohort. These thresholds were then used to determine the prognostic performance of ELF in a subset of 457 patients followed for a mean of 5 years. Results The Delphi panel selected sensitivity of 85% for the detection of fibrosis and >95% specificity for cirrhosis. The corresponding thresholds were 7.7, 9.8, and 11.3. Eighty-five percent of patients with mild or worse fibrosis had an ELF score ≥7.7. The sensitivity for cirrhosis of ELF ≥9.8 was 76%. ELF ≥11.3 was 97% specific for cirrhosis. ELF scores show a near-linear relationship with Ishak fibrosis stages. Relative to the <7.7 group, the hazard ratios for a liver-related outcome at 5 years were 21.00 (95% CI, 2.68–164.65) and 71.04 (95% CI, 9.4–536.7) in the 9.8 to <11.3 and ≥11.3 subgroups, respectively. Conclusion The selection of standard thresholds for detection and prognosis of liver fibrosis is described and their performance reported. These thresholds should prove useful in both interpreting and explaining test results and when considering the relationship of ELF score to Ishak stage in the context of monitoring.

scholarly journals Evaluating Kupferstein’s claims of the relationship of behavioral intervention to PTSS for individuals with autism

2018 ◽  
Vol 4 (3) ◽  
pp. 122-129 ◽  
Author(s):  
Justin Barrett Leaf ◽  
Robert K. Ross ◽  
Joseph H. Cihon ◽  
Mary Jane Weiss
Keyword(s):  
Stress Disorder ◽  
Service Providers ◽  
Extreme Caution ◽  
Content Type ◽  
Diagnostic Threshold ◽  
Indirect Measures ◽  
Methodological Rigor ◽  
Relationship Of ◽  
The Relationship ◽  
Selection Of

Purpose Kupferstein (2018) surveyed 460 respondents and found that 46 percent of respondents met the diagnostic threshold for posttraumatic stress disorder after exposure to applied-behavior-analysis-based intervention. The purpose of this paper is to provide an evaluation a critical analysis of Kupferstein (2018) including the experimental methods and discussion of the results. Design/methodology/approach The authors evaluated the Kupferstein’s methodological rigor with respect to the use of hypothesis testing, use of indirect measures, selection of respondents, ambiguity in definitions, measurement system, and framing of the experimental question when conducting the correlational analysis in addition to Kupferstein’s analysis and discussion of the results. Findings Based upon the analysis, Kupferstein’s results should be viewed with extreme caution due to several methodological and conceptual flaws including, but not limited to, leading questions used within a non-validated survey, failure to confirm diagnosis, and incomplete description of interventions. Originality/value It is the authors’ hope that this analysis provides caregivers, clinicians, and service providers with a scientific lens which will useful in viewing the limitations and methodological flaws of Kupferstein.

scholarly journals RELATIONSHIP OF SKIN MEASUREMENTS AND MILK PRODUCTION LEVELS IN CATTLE BREEDS MAINTAINED IN THE TROPICS

2021 ◽  
Vol 4 (2) ◽  
pp. 92-95
Author(s):  
S. F. Amakiri
Keyword(s):  
Hair Follicle ◽  
Milk Production ◽  
Skin Thickness ◽  
Production Potential ◽  
Cattle Breeds ◽  
Positive Linear Correlation ◽  
The Tropics ◽  
Relationship Of ◽  
The Relationship ◽  
Selection Of

The relationship between mean skin thickness or hair follicle depth of the skin from the midside (12th rib) area and milk production levels of pure Friesian (Holstein)cattle breeds, their ¾ and 7/8 crosses with White Fulani zebu, and pure White Fulanis, maintained in South-Western Nigeria were studied. A strongly positive linear correlation (r = 0.9), significant at 1% level was found between skin thickness and hair follicle depth, and milk production levels in these breeds. The results indicate that for cows maintained in a hot humid tropical environment, comparative midside skin thickness and hair follicle depth could be used as indices of the milk production potential of cows. It could be a useful field tool for selection of cows for milk production when considered along with other characteristics

scholarly journals THEORY OF FORENSIC EXPERTOLOGY IN THE SYSTEM OF LAW

2019 ◽  
pp. 48-57
Author(s):  
Nina Klymenko
Keyword(s):  
General Theory ◽  
Forensic Science ◽  
Prevention Measures ◽  
Forensic Expertise ◽  
Science Theory ◽  
Special General ◽  
Depth Study ◽  
Special Knowledge ◽  
Expert Science ◽  
Relationship Of

The article deals with the concept of a general theory of forensic expertology, the conditions for its creation, the place of forensic expert science in the system of legal sciences, the limits of its subject matter, the issues of interaction and the relationship of the science of forensic science and forensic expertology. The system and structure of the general theory of forensic expertology and its tasks are given. Separate articles of the Criminal Procedure, Civil Procedure, Administrative, Economic, Customs and Other Codes of Ukraine, the Law of Ukraine “On Forensic Expertise” of 1994 and the constitutional confirmation (article 92, paragraph 14 of the Constitution of Ukraine) of the legislative provision of forensic expertise are the further legal basis development of legal, organizational and managerial directions of forensic expertology. Forensic expertology does not only preserves the “birthmarks” of forensic science, but also, in turn, influences the dialectics of the development of the subject of forensic science and the content of its scientific fields (forensic techniques, forensic tactics and forensic methos). In particular, it requires clarifying the well-established view of the unity of forensic techniques for the investigator and expert. The first is made to collect “trace information”, the second is used for its in-depth study based on special knowledge in order to turn it into evidence-based information. Different goals are provided with different means of content. It is more accurate to raise the question of interaction, the “docking” of two, although closely related, but independent branches of scientific and technical means serving justice. The tasks of the general theory of forensic expertise (expert studies) are similar to the tasks of forensic science. They can be divided into general and special. General task is the creation of a scientific base for the purpose of the functioning and development of the industry of the use of special knowledge in examinations for the needs of legal proceedings, assistance in the fight against crime and other offenses, resolution of civil law disputes. Special task is the study of the laws of formation and development of specific types of forensic expertises, the expansion of their capabilities; development and improvement of expert technologies, tools, methods and techniques; the formation of the scientific foundations of new types of forensic expertises in connection with the emergence of new objects (computer, art history, etc.); developing expert crime prevention measures; development of an automated workplace software (AWS) for an expert of various types of research, study and implementation of advanced expert experience; forecasting expert practice processes and research tasks. Specific tasks are the up-to-date tasks that the practice puts before so the science of expert science to meet the needs that have arisen. Key words: forensic expertology, forensic expertise, legal science, theory.

scholarly journals Archiving Metaxourgio

2021 ◽  
pp. 167-184
Author(s):  
Thomais Kordonouri
Keyword(s):  
Urban Area ◽  
21St Century ◽  
Ground Level ◽  
The Past ◽  
The Future ◽  
Relationship Of ◽  
The Relationship ◽  
Selection Of ◽  
The Way

‘Archive’ is a totality of records, layers and memories that are collected. A city is the archive that consists of the conscious selection of these layers and traces of the past and the present, looking towards the future. Metaxourgio is an area in the wider historic urban area of Keramikos in Athens that includes traces of various eras, beginning in the Antiquity and continuing all the way into the 21st century. Its archaeological space ‘Demosion Sema’ is mostly concealed under the ground level, waiting to be revealed. In this proposal, Metaxourgio is redesigned in light of archiving. Significant traces of the Antiquity, other ruins and buildings are studied, selected and incorporated in the new interventions. The area becomes the ‘open archive’ that leads towards its lost identity. The proposal aims not only to intensify the relationship of architecture with archaeology, but also to imbue the area’s identity with meanings that refer to the past, present and future.

Product and Factory Modeling for Production Rate Determination

1999 ◽  
Author(s):  
S. G. Karthik ◽  
Edward B. Magrab
Keyword(s):  
Production Rate ◽  
Lead Time ◽  
Design Stage ◽  
Manufacturing Processes ◽  
Assembly Structure ◽  
Secondary Manufacturing ◽  
Relationship Of ◽  
The Relationship ◽  
Selection Of ◽  
Made In

Abstract An intelligent graphical user interface that captures a product’s functional and assembly structure and the factory that will make it are described. The results are then used to evaluate a factory’s production rate for the product. The program requires the product to be either a functionally uncoupled or decoupled design. The interface then: (1) implements a visualization of the functionally decomposed product structure; (2) implements an abstraction of a factory; (3) automatically generates candidate primary manufacturing processes and materials that are compatible with each other based on a very small number of attributes; (4) enables the user to make Make/Buy decisions for the components comprising the product; (5) assists the user in the selection of secondary manufacturing processes that are compatible with the primary manufacturing processes and materials for parts made in-house, and specify the vendor and the supply lead time for outsourced parts; (6) enables the specification of alternate materials and manufacturing processes; (7) implements a visual representation of the assembly structure as specified by the user; and (8) partially automates the creation of the assembly structure, and assists in the selection of assembly methods that are compatible with the materials chosen. In addition, the program assists in the design for assembly by: (1) requiring the product development team to think about the assembly process early in the design stage; (2) providing a visualization of the relationship of all components comprising the product to its other components; (3) requiring the specification of the order in which they are to be assembled; and (4) requiring the selection of assembly processes that are compatible with each other and the materials chosen. It also requires the specification of the capabilities of the factory that is going to make one or more of the components of the product, and requires that Make/Buy decisions for the parts comprising the product be made.

Information Systems for the Management of the Organizations

2018 ◽  
pp. 313-346
Author(s):  
Antonio Juan Briones Penalver
Keyword(s):  
Decision Making ◽  
Global Economy ◽  
Relevant Information ◽  
First Century ◽  
Strategic Decision ◽  
Industrial Society ◽  
Strategic Decision Making ◽  
Relationship Of ◽  
The Relationship ◽  
Selection Of

This chapter investigates the main concepts and activities of information in strategic decision-making systems. Since information became the global economy value source for organizations, information assumes a key role in contributing to the development of the performance of organizations through the selection of relevant information for businesses. The relationship of the strategic management of information with business activities contributes to the process of strategic decision making for more effective and efficient decisions. The understanding of the importance of information as a strategic resource in the management of organizations is becoming more important to strategists than the formulation of strategy models of industrial society. In the twenty-first century, no manager will be able to set and implement the strategy successfully without a basic understanding of information for strategic decision making.

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