Specific Technical Requirements Research Articles

Special technical requirements for unauthorized power supply.

Special technical requirements for unauthorized power supply.

Development of a Design Methodology for Cloud Distributed Control Systems of Mobile Robots

This article addresses the problem of cloud distributed control systems development for mobile robots. The authors emphasize the lack of a design methodology to guide the process of the development in accordance with specific technical and economic requirements for the robot. On the analysis of various robots architectures, the set of the nine most significant parameters are identified to direct the development stage by stage. Based on those parameters, the design methodology is proposed to build a scalable three-level cloud distributed control system for a robot. The application of the methodology is demonstrated on the example of AnyWalker open source robotics platform. The developed methodology is also applied to two other walking robots illustrated in the article.

THE VETERINARY DRUG «МASTIN» HAS EMBRYOTOXIC AND TERATOGENIC EFFECTS, IRRITATING AND ALLERGENIC PROPERTIES, STABILITY ARE DETERMINED

The article presents data on the study of embryotoxic and teratogenic effects, irritating and allergizing properties, stability during storage of the new veterinary drug «Mastin», intended for the treatment of subclinical and clinical mastitis of cows.
 It was established that the antimastitis drug «Mastin» does not have an embryotoxic and teratogenic effect, does not have irritating and allergizing properties. The veterinary drug «Mastin» is stable for 6 months under conditions of accelerated aging, which corresponds to a shelf life of 2 years from the date of manufacture, subject to storage conditions, and quality indicators meet the requirements of technical specifications.

ASSESSMENT OF THE QUALITY OF RADIO COMMUNICATION CHANNELS OF UNMANNED AERIAL SURVEILLANCE SYSTEMS

Unmanned aerial vehicles (UAVs) allow effective solving the problems of reconnaissance, relaying information on targets to means of fire destruction and striking on any type of object. However, there are many problematic issues regarding the creation of a communication system for remote control of UAV of medium and long range, obtaining video information about reconnaissance objects in real time.
 The methods allow to estimate the value of the deviation of the carrier frequency of the transmitter of the radio communication channel of unmanned aerial system (UAS) in the normal mode of its operation from the value of the prototype stated by the Developer based on the instrumental measurement of the average or assigned frequency of modulated radio emission.
 The purpose of the article is to consider the methods, technical means and conditions of instrumental evaluation of the radio emission frequency of UAV‟s radio channels transmitters by means of radio frequency control.
 This technique defines a set of procedures and rules for instrumental evaluation (measurement) of radio frequency of UAVs prototypes radio transmitters by means of radio frequency control in order to verify compliance of its parameters with the requirements of technical conditions or specifications for experimental aircraft.

GaN power IC normally-on and normally-off transistors technology and simulation

GaN technology has been waiting to be widely adopted because of its specific technical requirements. Integration of transistor and driver in a single die will enable to overcome problems with gate driving, high cost of circuit and low device reliability. This paper demonstrates technology of GaN-on-Si normally-on and normally-off transistor with different p-GaN cap-layer thickness as well as simulation of these devices. The simulation data confirm experimental results. P-GaN cap-layer thickness affects the current channel density: the more p-GaN thickness, the less channel density. The fabricated transistors have a maximum drain current in open state of about 800 mA/mm.

Clinical comprehensive evaluation of Diemailing~® Kudiezi Injection in treatment of cerebral infarction

Clinical comprehensive evaluation was conducted in "6+1" dimensions(safety, effectiveness, economy, innovation, suitability, accessibility, and characteristics of traditional Chinese medicine) to reflect the advantages and characteristics of Diemai-ling~® Kudiezi Injection in the treatment of cerebral infarction. This study adopted a combination of qualitative and quantitative evaluation methods. Based on the methodologies of evidence-based medicine, epidemiology, clinical medicine, evidence-based pharmacy, pharmacoeconomics, mathematical statistics, and health technology assessment(HTA), experts gave weight to the criterion layer and index layer, and multi-criteria decision analysis(MCDA) model and CSC v2.0 were used for calculations to evaluate the clinical value of Diemailing~® Kudiezi Injection. The existing evidence showed that active monitoring and a number of randomized controlled trials(RCTs) have been carried out after the listing of Diemailing~® Kudiezi Injection. Since the total incidence of adverse reactions is 0.099% and the incidence of adverse drug reactions(ADR) is rare, the safety evaluation is grade A. The evidence value of effectiveness demonstrated that Diemailing~® Kudiezi Injection combined with conventional western medicine improves the total effective rate of neurological deficit score and quality of daily life in the acute stage of cerebral infarction, which is superior to that in the conventional western medicine treatment group, and the level of evidence is high. Therefore, its efficacy is assessed as grade A. According to the results of economic research, when Diemailing~® Kudiezi Injection combined with conventional western medicine treatment is compared with conventional western medicine treatment, the Diemailing~® Kudiezi Injection group has a greater incremental effect, but the cost is affordable. Given the overall quality evaluation results of economic report is clear, it is evaluated as grade B. The innovation is grade A. The drug is favorable for clinical operation by medical staff and can be accepted by patients due to easy usage without special technical and management requirements. Since the drug exhibits good suitability for clinicians, nurses, pharmacists, and patients, it is evaluated as grade B. Considering its moderate price among similar drugs and good affordability and availability, it is evaluated as grade B. Diemailing~® Kudiezi Injection can evidently improve the clinical symptoms and neurological deficits of fire toxin syndrome of acute cerebral infarction, and this medicine belongs to ethnic medicine. Large-sample active monitoring research has been conducted with rich experience in human use. Therefore, the characteristics of traditional Chinese medicine are evaluated as grade A. The comprehensive clinical evaluation of Diemailing~® Kudiezi Injection is class A. We suggest that it can be directly transformed into relevant policy results of basic clinical medication management by procedure.

Evolution in Design Methodology for Complex Electric Ships

Modern ships are highly complex technological systems and have a long and resource-intensive development cycle. Moreover, the final design must comply with many specific technical and regulatory requirements while constraining the capital and operational expenditures. Decisions made during the early stages of design have a large impact on ship functionality and determine the overall configuration of the ship; the advanced computational resources available today can be used to change the traditional approach to ship design, significantly improving the data available for these early-stage decisions. Moreover, the new methodologies can improve the ability to assess the impact of innovative technologies such as those inherent in the complete electrification of ships, and can simultaneously allow visualization of a three-dimensional (3D) virtual prototype of the designs. In this article, a methodological approach is presented that exemplifies these advantages.

Development of the Line Protection Measurement and Control Device based on Domestic MCU

In this paper, the dual MCU hardware architecture of protection measurement and control device was presented by analyzing the current situation of domestic MCU and chip selection. The problems existing in ADC sampling accuracy and ADC integral non-linearity were studied. The design scheme of high-precision ADC acquisition system based on dual MCU architecture was proposed, which could meet the requirements of technical specifications by using oversampling and adaptive processing of sampling nonlinear area. In terms of reliability, the EMC performance of the device was promoted by the improvement of outlet and ADC acquisition circuit.

Research of the certified reference material of mecury in lyophilized bovine blood

Objective: To develop a reference material for the analysis of mercury in freeze-dried bovine blood. Methods: The whole blood of the bovine was collected, mercury standard solution was added, After mixing, packaging and freeze-drying. Two concentration levels of reference materials were prepared. The homogeneity and stability were evaluated by t-test and F-test methods respectively. The uncertainty in preparation, long-term stability, short-term stability and fixed value were evaluated Evaluation and assignment of reference materials. The research products were fixed value and were analyzed by two methods and fixed value in 9 laboratories and the uncertainty during development was analyzed. Results: The reference material has good uniformity and can be kept stably for 12 months at -20 ℃; When transported at ≤35 ℃, the quantity value is stable within 7 days; After re dissolution, it can be stored at 4 ℃ for 5 days; The values are 9.4 respectively μg/L and 29.2 μg/L, and the uncertainty is ±1.1 respectively μg/L and ±2.3 μg/L (k=2) . Conclusion: The indexes of reference materials for mercury composition analysis in freeze-dried bovine blood meet the requirements of technical specifications and have certain application value.

Urgent need for medical institutions to develop traditional Chinese medicine decoction pieces prescription-based processing and related suggestions

As the last procedure of traditional Chinese medicine(TCM) applied in clinical practice, prescription-based processing(PBP) is an important guarantee for the quality and clinical efficacy of TCM, which can not only maximize the effect of processed product, but also exert the characteristics of syndrome differentiation and treatment in TCM. However, due to various reasons, most medical institutions have no PBP business. As a result, doctors can only use the conventional decoction pieces available on the market, which also greatly limits their flexible medication, with certain impacts on the normal development of the curative effect of TCM. Therefore, the article explained the necessity of PBP from three aspects. In addition, according to Chinese Pharmacopoeia and the characte-ristics of TCM decoction pieces, the varieties suitable for PBP were summarized and proposed, and also some suggestions about developing PBP are given. The PBP is one of the characteristic techniques in TCM, with special technical requirements and profound scientific connotation. The development of PBP will not only promote the processing of TCM and ensure the clinical efficacy, but also promote the vigorous development of TCM.

Research on the Control System of the Micro-navigation Mechanism of the Vector-Propelled Aircraft Model Helicopter Based on Computer Control

This article briefly describes the computer control system of the RC helicopter vector propulsion engine, and analyzes the hydraulic control system and the electronic control system of the model helicopter propulsion engine control system in detail. It also outlines the specific functions and technical requirements of the digital control system for the vector propulsion engine of the RC helicopter. The research shows that the vector propulsion engine control system of the Chinese model helicopter should be developed and applied to the vector propulsion engine controller system, laying the foundation for the development of the vector propulsion engine control system of the Chinese model helicopter.

Многоуровневые ортопедические вмешательства у детей со спастическим параличом

Introduction The purpose of the article was to review the modern literature on the role of multilevel single-stage interventions in the surgery of secondary orthopaedic complications in children with cerebral palsy. Material and methods The review was done using the databases of the current sources of scientific information including PubMed, Scopus, ResearchGate, RSCI and Elsevier, Springer publishing products. A report made for the first educational meeting of the European Pediatric Orthopaedic Society held in Russia at the Ilizarov Center in 2021 was used for the contribution. Results and discussion The article discusses terminology, indications, particular techniques and early postoperative period, long-term outcomes of multilevel orthopaedic interventions and aspects of iatrogenic orthopaedic conditions in children with cerebral palsy. Conclusion Multilevel intervention is the surgical procedure of choice for the correction of secondary orthopaedic complications in patients with cerebral palsy. The success of the surgery would depend on adequately identified indications and quantitative values of the correction to be performed on the basis of 3D gait analysis, the compliance with specific technical requirements for the procedure and an early rehabilitation program. The strategy of multilevel interventions suggests the greatest possible reduction in the number of orthopaedic surgeries and can be considered successful if the patient undergoes a maximum of two multilevel reconstructive interventions in the childhood.

A Wide Human-Rights Approach to Artificial Intelligence Regulation in Europe

Editor’s note: This article was written before the publication by the EU Commission of its proposal for an artificial intelligence (AI) regulation [29] . In a first and provisional analysis of the proposed regulation, we observe that the proposed regulation incorporates some of the basic principles laid down in our article: it prioritizes fundamental rights and incorporates some human rights principles, such as accountability, and the inclusion of governance through supervisory authorities to implement and enforce the regulation. Nevertheless, we still feel that many of the suggestions present in our article, which would help to operationalize the regulation, are not addressed. One example is the reduced scope of the regulation to a list of “high risk applications,” leaving without a legal framework all other AI applications. We believe that the principles that inspire the regulation should also be applied in “lower risk applications.” Defining only the compliance process for AI developers, but leaving open the specific technical requirements that these high risk applications shall meet leaves untouched the existing gap between legal language and engineering practice. There are no described mechanisms by which all stakeholders (other than developers and implementers) can influence AI development, monitor their performance or claim redress if harmed. These shortcomings and other issues presented in our article leave the door open to loopholes that we hope the European Parliament can fix during the legislative process.

Developing eHealth in neonatal care to enhance parents’ self‐management

Discharge from a neonatal care unit is often experienced as a vulnerable time for parents. By communicating through digital technology, it may be possible to improve the support for parents and thereby make the transition from hospital to home less stressful. To develop an eHealth device supporting the transition from hospital to home for parents with a preterm-born child in Sweden using participatory design. Employing a framework of complex interventions in health care using participatory design. Parents of preterm-born infants and professionals at a neonatal department identified specific technical requirements for an eHealth device to be developed in the context of neonatal care and neonatal home care. The prospective end-users - parents and professionals - were continuously involved in the process of designing solution prototypes through meetings, verbal and written feedback, and interviews. The interviews were analysed using thematic analysis. Technical development was carried out with the perspectives of professionals and parents in mind, resulting in an eHealth application for computer tablets. The findings from the interviews with the parents and professionals revealed three categories: The tablets felt secure, easy to use and sometimes replaced visits to hospital and at home. The use of participatory design to develop an eHealth device to support a safe transition from hospital to home can benefit parents, the child, the family, and professionals in neonatal care.

Informing the information requirements of a digital twin: a rail industry case study

The right data to the right people at the right time are a crucial component to developing an effective digital twin (DT). A challenge in the industry is that existing legacy data systems have been tailored independently to meet specific technical requirements, leading to disparate information systems that collectively provide a suboptimal foundation needed to support a modern digital environment. To address this challenge, a detailed study was conducted in partnership with Network Rail to test a method that was adapted for the industry to identify appropriate, relevant and effective asset information requirements (AIRs). A robust library of AIRs will determine what data the organisation should be collecting and why these are necessary through design, construction, operation and disposal, hence informing the information requirements of a DT. The methodology was modified with four adaptations to improve its compatibility with the industry and was tested with 24 subject matter experts in the rail sector. It was concluded that integration of the AIR method would ensure that the rail industry is well positioned for digital transformation and provides a solid foundation to develop a DT. However, industry integration of the method would be a significant undertaking due to the amount of information that needs to be considered throughout the process, and so further research is required to improve its scalability.

Modeling and Analysis of Customer Preference in Civil Aircraft Manufacturing Supervision

Customer manufacturing supervision of civil aircraft refers to the operator of the aircraft or its authorized entity’s supervision and inspection process during aircraft’s manufacturing and final assembly, through which the operator (airline company) ensures that the delivered aircrafts meet the requirements of approved technical standards, process specifications, and engineering documents, as well as confirming that optional components and aircraft’s layout comply with technical standards required by the purchase contract. Manufacturing supervision brings forward aircraft delivery inspection, qualitative improvement of which enables the improvement of efficiency in single aircraft airworthiness inspection, ensuring aircraft’s continued airworthiness. From the manufacture’s perspective, analyzing customer’s needs and preference on manufacture supervision in advance, taking advantage of the relatively long production cycle, disposing proper engineering solutions for manufacture deviations, reducing the business negotiation items due to deviations not only helps reach the goal of customer supervision, but also helps optimize engineering dispositions.

Effect investigation of a new plasticizing additive on the refractories properties from fused zirconia stabilized with yttrium oxide for single crystal growing units

The effect of a new plasticizing additive on the properties and structure of samples from fused ZrО2 stabilized by ~ 10 % Y2О3 was investigated. It was established that, the effectiveness of the new plasticizing additive based on polycarbonate is not inferior to the LST binder currently used in the manufacture of products from fused zirconia stabilized with yttrium oxide. The samples from fused ZrO2 stabilized by ~ 10% Y2O3, containing this new plasticizing additive, after firing at a temperature of 1580 ºС are characterized by high properties (open porosity — 21.6 %, apparent density — 4.65 g/cm3, cold crushing strength — 40 N/mm2, thermal shock resistance (1300 ºС — water) — 8 thermal cycles), which meet the requirements of technical specifications.The obtained research results were used at pilot batch out put of refractory products in the form of a cylinder with an outer diameter of 104 mm, an inner diameter of 83 mm, and a height of 30 mm from fused ZrO2 stabilized with ~ 10 % Y2O3. The manufactured products are characterized by high indicators of properties that meet the requirements of technical specifications, and are supplied to the consumer for use in single crystal growing units.

Thickness accuracy of sash gang sawing

Thin lamellae, corresponding to the layer components of structural glued members, i.e. 2-ply or 3-ply glued parquet, can be manufactured in re-sawing operations of kiln-dried wood blocks. These must be prepared with high dimensional accuracy and adequate surface quality following specific technical requirements for lamellae thickness variations, especially in the upper layers of the glued composite parquet. The accuracy of oak lamellae thickness was examined here for a re-sawing process performed on the sash gang saw. A series of cutting tests were carried out in sawmill production conditions. The overall objective for these observations was to determine an effect of both the cumulative time of sawing (progress of the tool wear) and the lamella position (distribution of lateral forces) on the dimensional accuracy of production. Lamellae size control was conducted following the Brown methodology. Detailed within-board, between-board, and total sawing standard deviations for the examined lamellae positions in the gang were determined. The obtained results revealed that outermost lamellae are more subjected to dimensional inaccuracy than lamellae from the centre of the sawn block or frieze.

The features of the geological structure of the Verkhnechonsky oil and gas condensate field and their influence on the field development and operation system

The study aims to analyze the relationship between the redetermination of the complexity of the geological structure of the Verkhnechonsky oil and gas condensate field and the schedule adjustment of the field development plans. The paper uses the data on the exploration and production wells obtained from the pilot operation of JSC Verkhnechonskneftegaz, the geophysical work results, and the research materials publicly available in the press. The geological structure of the Verhnechonskoye oil and gas condensate field is unique in its complexity. This is due to the following factors: a combination of tectonic disturbances accompanied by the intrusion of traps; high mineralization of the reservoir water; sharp variability of the filtration and reservoir properties of the producing horizons by area and section due to the unevenness of the lithological composition of the reservoirs, their salinization and complete pinch-out. The development system of any field should take into account the peculiarities of the field’s tectonic and lithological-facies structure, and meet specific technical and economic requirements for drilling and operating wells. The complexity of the field structure requires a thorough selection of a development system that inevitably changes as the features of the field structure are studied, e.g. vertical drilling suggested at the initial stage of the filed development was shortly after replaced with inclined-horizontal drilling with the calculation of two options. Within the pilot operation project of the Verkhnechonsky field, JSC Verkhnechonskneftegaz has developed two variants of uniform grids of directional and horizontal wells with pattern flooding for the most explored deposits of the Verkhnechonsky horizon of blocks I and II. Because of the intensive processes of the reservoirs’ secondary salinization, the flooding method required a study of the reservoir water composition. However, the proposed drilling plan using a downhole engine and gamma-ray logging could not ensure the wellbores ducting through the most productive sections of the horizon, therefore, the flow rates of some directional and horizontal wells were not high enough. To increase the drilling efficiency, the specialists of the Drilling Department (JSC Verhnechonskneftegaz), together with the Department of Geology and Field Development (Schlumberger Ltd.), proposed a new methodology that increases the drilling efficiency by using a rotary-controlled system, logging-while-drilling, and geosteering. Thus, the development system of the Verkhnechonsky oils and gas condensate field was changing in the process of specifying the field’s geological structure, anisotropy reservoir properties, and the thickness of the producing horizons in size and cut, their salinization and pinch-out, and the composition of the reservoir waters.

Ertical Butt Welding Technology of Q355g Small Diameter Pipe TIG

In this paper, according to the requirements of welder's technical qualification specification, combined with the practice training topic of TIG vertical butt welding, we have repeatedly trained the operation process of TIG vertical butt welding of q355g steel pipe with specification of Φ 60 х 5,And we adopt the following process measures in the welding process: before welding, we make V-shaped tooling by combining with the workpiece ; when welding, we choose reasonable process parameters; at the same time, we pay more attention to the welding operation skills of backing and cover layer. Therefore, we have achieved satisfactory weld quality, and the relevant experience has been popularized in the teaching process of the school to obtain good evaluation.