scholarly journals Development of methods for equalizing level networks

2020 ◽  
Vol 21 (1) ◽  
pp. 58-65
Author(s):  
Ekaterina N. Esina ◽  
Vladislava V. Likhodeevskaya
Keyword(s):  
Measurement Accuracy ◽  
Closed Loop ◽  
Mutual Influence ◽  
Parametric Method ◽  
Network Configuration ◽  
Nodal Points ◽  
True Values ◽  
Intensive Development ◽  
Method Of Adjustment

The article is devoted to comparison of methods of calculating the approximate elevations of nodal points when adjusting leveling networks by strict and non-strict methods. Ensuring geomechanical monitoring of the mutual influence of constructed and operated objects is important in the intensive development of underground space of megacities, the construction of unique objects and structures. In the course of the research, mathematical models of level networks were developed and presented in the form of a closed loop and a set of open polygons. Analysis of modeling allows to determine the feasibility of applying the knot method by Professor V.V. Popov instead of the parametric method of adjustment. It is established that the quality of the results of strict equalization depends entirely on the quality of measurements, since deviations from the true values do not exceed the measurement error. The research has shown that it is possible to simplify the processing of monitoring data and evaluation of various configuration options for leveling networks, using algorithms for calculating approximate marks of nodal points. This makes it easier to process monitoring results and evaluate various network configuration options while ensuring the required level of measurement accuracy.

SPECIFIC FEATURES OF ALTERNATIVE COMMUNICATION WITH CHILDREN WITH SENSORY DISORDERS AND MULTIPLE DISABILITIES

2018 ◽  
Vol 28 (3) ◽  
pp. 1027-1030
Author(s):  
Gergana Todorova - Markova
Keyword(s):  
Sign Language ◽  
Mutual Influence ◽  
Multiple Disabilities ◽  
Educational Needs ◽  
Special Focus ◽  
Special Educational Needs ◽  
Alternative Communication ◽  
Sensory Disorders ◽  
Communication Situations

The article is focused on the communication with children with special educational needs. The main topic is alternative communication with children with sensory disorders and multiple disabilities. It explores the phenomenon of communication, citing current definitions developed by a number of authors, which place the emphasis on different aspects of this complex and multilayered process, with a special focus on alternative communication with the groups of special needs children mentioned in the title.The issue is investigated from a special pedagogical and from a social perspective.The author is especially interested in the exploration of the multiple strata of communication (the universal, functional and specific levels). Apart from the different forms, contents, methods and means of communication (the last of which is most commonly discussed in Bulgaria), the article is focused primarily on the important methodological issues related to this topic.One of these basic questions of methodology is the attempt not to place at the center of this process its bi-directional nature, its algorithm or code (sign language, Braille writing system, etc.), but instead to focus on the personalities of those involved in the interaction, their initiative, relationship and goals manifested in different communication situations (mutual influence, emancipation and therapy). Particular emphasis is given to therapy, i.e. the way of influencing the communication behavior of children with sensory disorders and multiple disabilities. It is not viewed as a unilateral process (stimulus-response), but as an interactive one, based on mutual influence. The relationship between the communicators is of utmost significance.Communication is characterized by a number of specific features. Those can mostly be found in the specificity of the communication situations (for example the interactive situations in the following pairs of communicators: deaf – hard of hearing; deaf – deaf; deaf-blind – deaf, etc.), in the presence of an intermediary (for example a sign language interpreter) and above all in the personalities of the communicators. They change the quality of communication. It is for this reason, and not just because of the different means of communication, that this interaction is defined as “alternative”, or more precisely, it is an alternative to the communication of children without disabilities.Based on the analyzed information, the author formulates a number of inferences and recommendations. The main conclusion is the following:When discussing alternative communication with children with special educational needs, the focus should shift from the specific means of communication towards the equally socially important quality of the complex process of communication, which is centered on the personality of the handicapped child.

Assessing the Quality of Management of Transformation Processes in Economic Systems

2020 ◽  
Vol 26 (9) ◽  
pp. 952-956
Author(s):  
M. V. Malyshkina ◽  
M. V. Miroslavskaya
Keyword(s):  
Systems Approach ◽  
Mutual Influence ◽  
Organizational Transformation ◽  
Quality Criterion ◽  
Economic Transformation ◽  
Economic Systems ◽  
Negative Consequences ◽  
Management Actions ◽  
Transformation Processes

Aim. The presented study aims to develop the methodology for assessing the quality of management of organizational transformation processes. Tasks. To achieve the set aim, the authors solve the following problems: determine the essence and content of socio-economic transformation, formulate quality assurance principles for the management of transformation processes, draw attention to the problem of selecting a unified quality criterion for the management of organizational transformation processes. Methods. This study uses general scientific methods of cognition, including analysis and synthesis. It also applies a systems approach to identify the major problems of assessing the quality of management of transformation processes, including the problem of selecting a unified quality criterion for the management of transformation processes and formulating the principles of ensuring the quality of management of transformation processes. Results. The global problem of managing transformation processes in the economic system consists in the complexity of the managed processes, which increases due to the multidimensionality, mutual influence, and the resulting uncertainty of interactions between the elements of the system. It is concluded that the methodology for assessing the quality of management of transformation processes is based on the principle of integrating separate measures to improve the quality of management of system elements into a single system of management actions and the principle of ensuring that management actions are primarily aimed at preventing possible negative consequences of the transformation of economic systems, i.e. reducing the potential impact of unfavorable events and their consequences. To assess the effectiveness of targeted management actions and productive actions aimed at organizing, controlling, and guiding the transformation process, the authors actualize the problem of selecting an adequate quality criterion for the management of transformation processes in economic systems and put forward a hypothesis about a possible unified criterion of management quality. Conclusions. The principle of integrating separate measures to improve the quality of management of system elements and the principle of ensuring that management actions are aimed at preventing possible negative consequences lie at the core of the methodology for assessing the quality of management of transformation processes in economic systems. The quality assessment methodology should be developed in the direction of finding a unified quality criterion for managing transformation processes in economic systems.

Creation of physiologic rhythm by closed loop stimulation in heart failure patients with severe chronotropic incompetence: worldwide first results of a pilot study

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
J Proff ◽  
B Merkely ◽  
R Papp ◽  
C Lenz ◽  
P.J Nordbeck ◽  
...  
Keyword(s):  
Heart Rate ◽  
Closed Loop ◽  
Funding Source ◽  
Chronotropic Incompetence ◽  
First Results ◽  
The Mean ◽  
Group 2 ◽  
Group 1

Abstract Background The prevalence of chronotropic incompetence (CI) in heart failure (HF) population is high and negatively impacts prognosis. In HF patients with an implanted cardiac resynchronisation therapy (CRT) device and severe CI, the effect of rate adaptive pacing on patient outcomes is unclear. Closed loop stimulation (CLS) based on cardiac impedance measurement may be an optimal method of heart rate adaptation according to metabolic need in HF patients with severe CI. Purpose This is the first study evaluating the effect of CLS on the established prognostic parameters assessed by the cardio-pulmonary exercise (CPX) testing and on quality of life (QoL) of the patients. Methods A randomised, controlled, double-blind and crossover pilot study has been performed in CRT patients with severe CI defined as the inability to achieve 70% of the age-predicted maximum heart rate (APMHR). After baseline assessment, patients were randomised to either DDD-CLS pacing (group 1) or DDD pacing at 40 bpm (group 2) for a 1-month period, followed by crossover for another month. At baseline and at 1- and 2-month follow-ups, a CPX was performed and QoL was assessed using the EQ-5D-5L questionnaire. The main endpoints were the effect of CLS on ventilatory efficiency (VE) slope (evaluated by an independent CPX expert), the responder rate defined as an improvement (decrease) of the VE slope by at least 5%, percentage of maximal predicted heart rate reserve (HRR) achieved, and QoL. Results Of the 36 patients enrolled in the study, 20 fulfilled the criterion for severe CI and entered the study follow-up (mean age 68.9±7.4 years, 70% men, LVEF=41.8±9.3%, 40%/60% NYHA class II/III). Full baseline and follow-up datasets were obtained in 17 patients. The mean VE slope and HRR at baseline were 34.4±4.4 and 49.6±23.8%, respectively, in group 1 (n=7) and 34.5±12.2 and 54.2±16.1% in group 2 (n=10). After completing the 2-month CPX, the mean difference between DDD-CLS and DDD-40 modes was −2.4±8.3 (group 1) and −1.2±3.5 (group 2) for VE slope, and 17.1±15.5% (group 1) and 8.7±18.8% (group 2) for HRR. Altogether, VE slope improved by −1.8±2.95 (p=0.31) in DDD-CLS versus DDD-40, and HRR improved by 12.9±8.8% (p=0.01). The VE slope decreased by ≥5% in 47% of patients (“responders to CLS”). The mean difference in the QoL between DDD-CLS and DDD-40 was 0.16±0.25 in group 1 and −0.01±0.05 in group 2, resulting in an overall increase by 0.08±0.08 in the DDD-CLS mode (p=0.13). Conclusion First results of the evaluation of the effectiveness of CLS in CRT patients with severe CI revealed that CLS generated an overall positive effect on well-established surrogate parameters for prognosis. About one half of the patients showed CLS response in terms of improved VE slope. In addition, CLS improved quality of life. Further clinical research is needed to identify predictors that can increase the responder rate and to confirm improvement in clinical outcomes. Funding Acknowledgement Type of funding source: Private company. Main funding source(s): Biotronik SE & Co. KG

scholarly journals P3 A closed loop audit on pre-operative anaemia in major elective orthopaedic surger

BJS Open ◽  
2021 ◽  
Vol 5 (Supplement_1) ◽  
Author(s):  
Chan Hee Koh ◽  
Nicolai Gruner-Hegge ◽  
Dancho Ignatov ◽  
Aneesul Shakir ◽  
Chan Hee Koh
Keyword(s):  
Closed Loop ◽  
Perioperative Management ◽  
Consensus Statement ◽  
Preoperative Assessment ◽  
Action Plans ◽  
International Consensus ◽  
Change In Practice ◽  
International Consensus Statement ◽  
Preoperative Anaemia

Abstract Introduction The international consensus statement on perioperative management of anaemia advises that patients with haemoglobin (Hb) <130 be treated before undergoing elective operations. The advantages include reduced risk of acute kidney injuries, infections and transfusions, and quicker recovery. Methods Data was collected prospectively from 127 consecutive patients undergoing elective arthroplasties at Hinchingbrooke hospital. Baseline compliance with the consensus statement was first assessed in May 2018, and the results presented at a clinical governance meeting. Departmental action plans included early identification of anaemia and treatment to Hb 130, delaying operations where necessary. We then reassessed compliance in May 2019. Results There was a statistically significant change in practice (p = 0.036). The proportion of patients undergoing arthroplasties despite Hb < 130 reduced from 38% to 21%. Those operated with Hb < 120 decreased from 14% to 0%. The proportion of preoperative anaemias that were appropriately investigated during preoperative assessment increased from 11% to 80% (p < 0.001). The increase in attempted treatment of preoperative anaemia prior to surgery however was not significant (7% vs 20%; p = 0.279). Discussion Implementation of departmental action plans resulted in substantial improvements to clinical practice. For those that underwent arthroplasties despite mild preoperative anaemia, it may have been felt that delays in improvement to quality of life for treatment may be unacceptable, or the causes (e.g. chronic disease) difficult to treat. Further action plans should involve even earlier identification of anaemia, involving primary care at the point of referral.

scholarly journals Converting MST to TSP Path by Branch Elimination

2020 ◽  
Vol 11 (1) ◽  
pp. 177
Author(s):  
Pasi Fränti ◽  
Teemu Nenonen ◽  
Mingchuan Yuan
Keyword(s):  
Spanning Tree ◽  
Closed Loop ◽  
Minimum Spanning Tree ◽  
Travelling Salesman Problem ◽  
Open Loop ◽  
Travelling Salesman ◽  
Elimination Algorithm ◽  
Number Of Iterations ◽  
Number Of Branches

Travelling salesman problem (TSP) has been widely studied for the classical closed loop variant but less attention has been paid to the open loop variant. Open loop solution has property of being also a spanning tree, although not necessarily the minimum spanning tree (MST). In this paper, we present a simple branch elimination algorithm that removes the branches from MST by cutting one link and then reconnecting the resulting subtrees via selected leaf nodes. The number of iterations equals to the number of branches (b) in the MST. Typically, b << n where n is the number of nodes. With O-Mopsi and Dots datasets, the algorithm reaches gap of 1.69% and 0.61 %, respectively. The algorithm is suitable especially for educational purposes by showing the connection between MST and TSP, but it can also serve as a quick approximation for more complex metaheuristics whose efficiency relies on quality of the initial solution.

scholarly journals 1178 J, 527 nm near diffraction limited laser based on a complete closed-loop adaptive optics controlled off-axis multi-pass amplification laser system

2021 ◽  
Vol 9 ◽  
Author(s):  
Deen Wang ◽  
Xin Zhang ◽  
Wanjun Dai ◽  
Ying Yang ◽  
Xuewei Deng ◽  
...  
Keyword(s):  
Laser Beam ◽  
Adaptive Optics ◽  
Closed Loop ◽  
Focal Spot ◽  
Beam Quality ◽  
Laser System ◽  
Diffraction Limit ◽  
Kdp Crystal ◽  
Main Amplifier

Abstract A 1178 J near diffraction limited 527 nm laser is realized in a complete closed-loop adaptive optics (AO) controlled off-axis multi-pass amplification laser system. Generated from a fiber laser and amplified by the pre-amplifier and the main amplifier, a 1053 nm laser beam with the energy of 1900 J is obtained and converted into a 527 nm laser beam by a KDP crystal with 62% conversion efficiency, 1178 J and beam quality of 7.93 times the diffraction limit (DL). By using a complete closed-loop AO configuration, the static and dynamic wavefront distortions of the laser system are measured and compensated. After correction, the diameter of the circle enclosing 80% energy is improved remarkably from 7.93DL to 1.29DL. The focal spot is highly concentrated and the 1178 J, 527 nm near diffraction limited laser is achieved.

Testing the Accuracy of Surface Roughness Measurements Carried out with a Portable Profilometer

2015 ◽  
Vol 637 ◽  
pp. 69-73 ◽  
Author(s):  
Krzysztof Stępień
Keyword(s):  
Surface Roughness ◽  
Measurement Accuracy ◽  
Environmental Changes ◽  
Experimental Tests ◽  
Evaluation Procedure ◽  
Human Errors ◽  
Modern Manufacturing ◽  
Machine Parts ◽  
Roughness Measurements

Surface roughness is a factor that has a vital influence on overall quality of machine parts. This is the reason why proper measurements of surface roughness are a matter of great importance in modern manufacturing technology. Nowadays portable profilometers are common instruments to be used under industrial conditions. Measurements with such instruments can be affected by numerous factors, for example environmental changes, human errors of an operator, etc. This paper discusses problem of an evaluation of measurement accuracy of portable profilometers. It also describes the evaluation procedure and presents results experimental tests.

Analysis of the Test Method of Quartz Glass Optical Homogeneity

2017 ◽  
Vol 726 ◽  
pp. 414-418
Author(s):  
Bo Fu ◽  
Hui Wang ◽  
Zhu Feng Shao
Keyword(s):  
Quartz Glass ◽  
Measurement Accuracy ◽  
Test Methods ◽  
Test Method ◽  
Wavefront Aberration ◽  
Optical Homogeneity ◽  
Advantages And Disadvantages ◽  
Interference Measurement ◽  
Optical Quartz Glass

The optical quartz glass is widely applied in optical system , photo communications，inertial navigation，etc.It must have high optical homogeneity. Optical homogeneity of the optical quartz glass directly affects the wavefront quality of the optical transmission system, and changes the wavefront aberration of the system. How to accurately determine the optical homogeneity of the quartz glass is especially important. Currently，the method of test for optical homogeneity mainly used by interference principle. This paper analyzes various existing interference measurement method and test equipment. Summarized the advantages and disadvantages of various test methods，using range and measurement accuracy.

scholarly journals Mutual Influence of Psoriasis and Sport

Medicina ◽  
2021 ◽  
Vol 57 (2) ◽  
pp. 161
Author(s):  
Paolo Custurone ◽  
Laura Macca ◽  
Lucrezia Bertino ◽  
Debora Di Mauro ◽  
Fabio Trimarchi ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Physical Activity ◽  
Metabolic Syndrome ◽  
Mutual Influence ◽  
Sport Activity ◽  
Joint Involvement ◽  
Indirect Benefits ◽  
The Impact

The link between psoriasis and sport is a controversial issue. The topic has been poorly investigated, and nowadays there are many unsolved questions, dealing with the role of psoriasis in influencing the sporting habits of patients and, vice versa, the impact of sport activity on course, severity and extent of the disease, with particular regard to the indirect benefits on cardiovascular risk and metabolic syndrome. Moreover, the role of physical activity on patients’ quality of life and the potential limitations on physical activity due to joint involvement have not been well elucidated until now. In this narrative review we will try to provide answers to these queries.

ON THE CONDUCTOR TRAINING SYSTEM IN CHINA (methodological observations)

2021 ◽  
Vol 1 (1) ◽  
pp. 24-29
Author(s):  
Chen Xize ◽  
Keyword(s):  
Educational Program ◽  
Musical Theater ◽  
Training Programs ◽  
Mutual Influence ◽  
Training System ◽  
Orchestral Music ◽  
Symphony Orchestras ◽  
Saint Petersburg ◽  
Conductor Training ◽  
Intensive Development

The article, which has a historical and methodological orientation, focuses on issues that are indicative both for the development of orchestral music in China and for the training of students in conducting. This work reveals the typology of expressive possibilities of mono-timbre and poly-timbre folk orchestras, as well as certain provisions concerning the mutual influence of folk instrument orchestras and symphony ensembles. The conductor's curriculum adopted at The Central Conservatory of China is presented and its specific features are reviewed. It is noted that due to the intensive development of symphony orchestras and symphonic genres, as well as compositions for musical theater, the process of training conductors and composers in conservatories and music faculties of universities in China is being improved. The cumulative world pedagogical experience was selected to develop the conductor training programs in Chinese conservatories, taking into account the positions most important for national pedagogical adaptation. The educational program for conducting was created in China considering the practice of the Saint Petersburg and Moscow conservatories.

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