Technical Requirements for High-quality EEG Acquisition

2016 ◽  
pp. 143-161 ◽  
Author(s):  
Emmanuel Maby
Keyword(s):  
High Quality ◽  
Technical Requirements

SCULPTURE WORKSHOP: PROFESSIONAL REQUIREMENTS FOR CREATING A LEARNING ENVIRONMENT

2021 ◽  
Vol 7 (2) ◽  
pp. 138-147
Author(s):  
Dyba Yu ◽  
◽  
Gogol V ◽  
Keyword(s):  
Learning Environment ◽  
Art Education ◽  
Working Environment ◽  
Technical Equipment ◽  
Creative Work ◽  
Functional Requirements ◽  
High Quality ◽  
Technological Processes ◽  
Technical Requirements ◽  
Professional Requirements

One of the necessary and mandatory conditions for high-quality professional art education is training in an environment that encourages creative work and provides the necessary level of comfort, ergonomic, technological, sanitary and technical requirements and proper organization of labour protection. Compared to other artistic professions, the working environment of a sculptor is more complex. It must be equipped with the necessary technical equipment (mostly quite large) and manual and mechanical tools, take into account functional requirements and complex technological processes, as well as provide the necessary and diverse indicators of lighting level, temperature, humidity, noise, etc. All these requirements also apply to sculpture academic workshops, where students learn the basics of the profession. Subsequently, graduates of sculpture departments use the acquired skills in their creative activities. Stating a certain degradation of the requirements for the profession of the sculptor, the authors of the publication express worries about the obvious underestimation of requirements for the workplace of a professional sculptor, which can be observed in numerous examples, and remind the reader of these basic requirements

DIGITAL TERRESTRIAL BROADCASTING: FEATURES OF IMPLEMENTATION AND ISSUES OF USING RADIO BROADCASTING

2021 ◽  
Author(s):  
А.В. ЛАШКЕВИЧ
Keyword(s):  
Multimedia Information ◽  
Economic Factors ◽  
High Quality ◽  
Digital Radio ◽  
Technical Requirements ◽  
Radio Broadcasting ◽  
Modern Development ◽  
Equipment Production ◽  
Geographical Characteristics ◽  
Digital Sound

В статье проанализированы основные характеристики существующих систем цифрового звукового и мультимедийного радиовещания, преимущества цифрового радиовещания как технологии передачи звуковой и мультимедийной информации, особенности использования различных диапазонов частот, влияние социальных, технико-экономических факторов и географических особенностей на технические требования к сетям радиовещания. Рассмотрены вопросы организации высококачественного радиовещания, способного привлечь аудиторию в условиях современного развития технологий. Определены основные задачи в области производства приемного оборудования для цифрового радиовещания. The article analyzes the main features of existing digital sound and multimedia broadcasting, advantages of digital radio as a technology for transmitting sound and multimedia information, benefits of different frequency ranges for digital radio, the influence of social, technical, and economic factors, and geographical characteristics on the technical requirements for broadcasting networks. The issues of the organization of high-quality radio broadcasting capable to attract an audience in conditions of the modern development of technologies are considered. The main tasks in the field of digital radio receiving equipment production are determined.

Biomedical Sensors

2013 ◽  
pp. 356-436
Author(s):  
Sverre Grimnes ◽  
Jan Olav Høgetveit
Keyword(s):  
Electrical Properties ◽  
Medical Equipment ◽  
Electrical Signal ◽  
The Other ◽  
Electrical Safety ◽  
High Quality ◽  
Biomedical Sensors ◽  
Physiological Variables ◽  
Technical Requirements

This chapter addresses biomedical sensors, which are important factors for the quality of measurement of biological and physiological variables, and thus deserve close attention both with respect to the medical functions and the technical requirements. There are special demands for biomedical sensors, particularly for invasive sensors that must pass sterilization by temperature or radiation at much higher levels than the rest of the medical equipment. On the other hand, miniaturization, mechanical strength, electrical safety, and sterility are important elements of the sensor design process. The sensor determines the accessibility, spatial resolution, accuracy, sensitivity, selectivity, and response time of the measurement. In order to convert the parameter of interest into an electrical signal suited for medical use, a transducing element is necessary. Knowledge of the complete chain of transducer materials, their electrical properties, and integration with bio-amplifiers are therefore necessary to design high-quality biomedical sensors.

scholarly journals Scaling of Technical Systems Using an Object-Based Modelling Approach

2019 ◽  
Vol 1 (1) ◽  
pp. 1603-1612
Author(s):  
Philipp Wolniak ◽  
Bastian Sauthoff ◽  
Roland Lachmayer ◽  
Iryna Mozgova
Keyword(s):  
High Quality ◽  
Initial Development ◽  
Technical Requirements ◽  
Object Based ◽  
Short Period ◽  
Scaling Methods ◽  
Technical Systems ◽  
Cost Efficient ◽  
The Cost ◽  
Modelling Approach

AbstractCompanies that operate and manufacture products in the technical area are exposed to increasingly challenging market situations. The developed products should be individualized to the customers' needs while offering high quality at an acceptable price.The temporal and especially economic claims are constantly growing, forcing the companies to develop a given product that matches the cost-side as well as the technical requirements in a short period of time. Following an initial development, it is often necessary to provide further product variants regarding a modified geometry or performance. A time and cost efficient way is the scaling of the initially developed product.Existing scaling methods focus on uniform geometry changes, not taking into account influences from non-uniform requirement or geometry alterations. Therefore, this article proposes an approach on how to modell and assess the outcome of a scaled assembly, based on the connection of individual scalable components inside an object-based approach.

Research of Liquid Aluminium Alloys at Particular Stages of Manufacturing Process

2014 ◽  
Vol 59 (1) ◽  
pp. 397-402
Author(s):  
S. Dzik ◽  
W. Targowski
Keyword(s):  
Hydrogen Content ◽  
Liquid Alloy ◽  
Melting Furnace ◽  
High Quality ◽  
Liquid Aluminium ◽  
Design Engineers ◽  
Technical Requirements ◽  
Strongly Connected ◽  
Long Time ◽  
Purity Evaluation

Abstract Requirements, placed by design engineers in relation to special castings, applied to gas filled high voltage switchgears PN-EN 50052:2002, are still higher. These demands concern to quality of machined sealing surface, assurance of castings leaktightness for a long time of operating and suitable strength during special bursting test. Manufacturer of such castings is obliged to use, among other things, high quality new alloy and guarantee proper metallurgical treatment and liquid alloy control during metal melting and preparation, before filling the moulds. Generally new alloy testing is made by its producer. Receiver checks testing results, according to effective procedures, during incoming inspection. Following tests are carried out during liquid alloy preparation (melting, degassing and inoculation): chemical composition test, thermal analysis and density index. To confirm that the process of liquid alloy control is correct comparative examinations were made, using new installations of companies such as Foseco, ALSPEK* H, and metallographic examinations of special samples with computer picture analysis. All examinations were made for one heat of AlSi7Mg0.3 alloy (AC - 42100 according to PN-EN 1706:2011), at different stages of liquid metal preparation, such as: in melting furnace, after reladle, after refining and just before filling sand moulds. Additionally alloy purity index, hydrogen content in liquid alloy, porosity degree were determined and also analysis of inclusions was made. Examinations with applying modern devices confirmed, that the process of preparation and testing of liquid alloy, intended to produce castings of special requirements, is correct. All applied refining treatments improved liquid alloy quality, eliminated number of inclusions, porosity and reduced hydrogen content. It is a base for stating that high quality alloy, correctly prepared and controlled before filling sand mould was used. New Foseco devices can be used in foundries to verify their processes of alloy preparation and alloy purity evaluation on different stages, especially producing castings of high technical requirements. The thixotropy phenomenon is strongly connected with the change of viscosity in time, while the of Navier-Stockes equation. The micro- and macroscale models are coupled using CAFE approach.

ALTERNATIVES TO AUTOMATED PEOPLE‐MOVER SYSTEMS FOR SMALL BUT DENSE POPULATED AREAS

2009 ◽  
Vol 15 (1) ◽  
pp. 90-101 ◽  
Author(s):  
Milena Scherer ◽  
Jost Wichser ◽  
Jūratė Venckauskaitė
Keyword(s):  
Transport System ◽  
Public Transport ◽  
New Technology ◽  
High Quality ◽  
Transport Planning ◽  
Public Transport System ◽  
Technical Requirements ◽  
New Public ◽  
Automated People Mover

This paper describes the operational and technical requirements for a high quality public transport system in the country of Liechtenstein and is based on a study conducted by the Institute for Transport Planning and Systems (IVT) at the ETH Zurich. In this case study, a new public transport system (NPT) is defined as a new guideway transport system introduced in a region where this system does not exist yet. Often there are forms of a new technology, for instance, an automated people mover or a modern tramway. Some of the surveyed NPTs are not introduced in many places. The Liechtenstein case study made it possible to analyze, why these systems have not been successful than expected and what is the most appropriate way to introduce a NPT in this country. Santrauka Aprašomas poreikis sukurti aukštos kokybes viešojo transporto sistemą Lichtenšteino kunigaikštystėje. Remiamasi Ciuricho planavimo ir transporto sistemų instituto parengta studija. Šiame tiriamajame darbe pasiūlyta nauja viešojo transporto sistema. Dažnai naujos technologijos sistemos suprantamos kaip automatizuotas transportas, pvz., modernus tramvajus. Lichtenšteino studija parode, kodėl ne visos naujos transporto sistemos sėkmingos, kaip tikimasi. Studijoje pasiūlytas priimtiniausias naujos Lichtenšteino viešojo transporto sistemos būdas.

Technical requirements for high-quality scalp DC recordings

1989 ◽  
Vol 72 (6) ◽  
pp. 545-547 ◽  
Author(s):  
H. Bauer ◽  
C. Korunka ◽  
M. Leodolter
Keyword(s):  
High Quality ◽  
Technical Requirements

scholarly journals Metallurgical processing of converter slag

2021 ◽  
Vol 318 (3) ◽  
pp. 35-42
Author(s):  
S.M. Tleugabulov ◽  
◽  
N.B. Aitkenov ◽  
G.G. Zhabalova ◽  
A.G. Belichko ◽  
...  
Keyword(s):  
Industrial Waste ◽  
Converter Slag ◽  
Experimental Studies ◽  
Raw Material ◽  
Production Waste ◽  
Gas Purification ◽  
High Concentration ◽  
High Quality ◽  
Quality Steel ◽  
Technical Requirements

Converter slurries at modern metallurgical plants represent a significant part of metal-containing industrial waste with a high concentration of iron. Currently, there is a problem of their utilization and use as raw materials for metallurgy. The purpose of this work is to study the processes of briquetting and recovery of briquetted products, based on a mixture of converter slurries of gas purification and converter slags. When performing experimental studies on the preparation of sludge briquettes from a mixture of converter sludge of gas purification and converter slag, their metallization and reduction melting in laboratory conditions, the optimal composition of the components of the mixture of converter slag and gas purification sludge was determined by the percentage of iron, which is appropriate for use as a raw material for steel smelting. Experimental studies on the preparation of sludge-coal mixtures from dispersed metal-containing and carbon-containing industrial waste with stoichiometric coal consumption for the recovery of extracted metals have proved the possibility of obtaining sludge-coal briquettes, which are further subjected to metallization and reduction melting. Sequential processing of dispersed production waste, namely drying, metallization and reduction melting, allowed us to obtain at the final stage a metal sample that corresponds to high-quality steel in its composition. Based on the analysis of the results of experimental studies, the technology of reducing melting of metal-containing waste has been developed. As a result of the implementation of the technology, high-quality steels and alloys can be obtained without carburizing the metal, bypassing the production stages of cast iron and high-carbon alloys. The content of harmful impurities of sulfur and phosphorus meets the technical requirements of high-quality steel. The proposed technology for processing slag and sludge from oxygen-converter production will reduce the volume of accumulated production waste.

Some problems of objective-prism spectra classification

1966 ◽  
Vol 24 ◽  
pp. 51-52
Author(s):  
E. K. Kharadze ◽  
R. A. Bartaya
Keyword(s):  
Short Wave ◽  
High Quality ◽  
Stellar Spectra ◽  
Objective Prism

The unique 70-cm meniscus-type telescope of the Abastumani Astrophysical Observatory supplied with two objective prisms and the seeing conditions characteristic at Mount Kanobili (Abastumani) permit us to obtain stellar spectra of a high quality. No additional design to improve the “climate” immediately around the telescope itself is being applied. The dispersions and photographic magnitude limits are 160 and 660Å/mm, and 12–13, respectively. The short-wave end of spectra reaches 3500–3400Å.

A non-cyanide method of electropolishing silver

1978 ◽  
Vol 36 (1) ◽  
pp. 146-147
Author(s):  
R. L. Lyles ◽  
S. J. Rothman ◽  
W. Jäger
Keyword(s):  
Electron Microscopy ◽  
Sulphuric Acid ◽  
Methyl Alcohol ◽  
Health Hazards ◽  
Silver Alloy ◽  
High Quality ◽  
Silver Alloys ◽  
Free Sample ◽  
Specimen Quality ◽  
Standard Techniques

Standard techniques of electropolishing silver and silver alloys for electron microscopy in most instances have relied on various CN recipes. These methods have been characteristically unsatisfactory due to difficulties in obtaining large electron transparent areas, reproducible results, adequate solution lifetimes, and contamination free sample surfaces. In addition, there are the inherent health hazards associated with the use of CN solutions. Various attempts to develop noncyanic methods of electropolishing specimens for electron microscopy have not been successful in that the specimen quality problems encountered with the CN solutions have also existed in the previously proposed non-cyanic methods.The technique we describe allows us to jet polish high quality silver and silver alloy microscope specimens with consistant reproducibility and without the use of CN salts.The solution is similar to that suggested by Myschoyaev et al. It consists, in order of mixing, 115ml glacial actic acid (CH3CO2H, specific wt 1.04 g/ml), 43ml sulphuric acid (H2SO4, specific wt. g/ml), 350 ml anhydrous methyl alcohol, and 77 g thiourea (NH2CSNH2).

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