UNIFIED METHOD OF ADAPTIVE-ROBUST REDUCTION OF UNCERTAINTIES IN THE ELIMINATION OF BLIND SPOTS AND RANGING OF AIR OBJECTS IN PULSE-DOPPLER RADARS

A unified method of disclosing blind ranges, reducing or eliminating measurement ambiguity has been proposed and investigated, which allows, within the framework of a typical long-range detection session of an air object by a pulse-Doppler radar, to reduce time costs, expand information content, and unify algorithmic support of a detection session. At the heart of: unified adaptive-robust procedures for controlling radiation parameters (guaranteeing the observability of an object) and processing ambiguous quasi-measurements of range (in absence of detection) and real measurement (in initial detection).

TEACHING STUDENTS IN MODERN CONDITIONS

The rapid forced transition to distance learning in the spring of 2020 served as an impetus for the development and introduction of new forms of education. Such a massive introduction of distance learning quickly revealed the advantages of traditional full-time education. The first meetings with students after the experimentally remote semester showed a noticeable loss of students of some of the learning skills, for example necessary for working in a team. In addition, it is impossible to teach many technical disciplines qualitatively to a student without his presence in the classroom. In the course of individual remote work with students (which entailed increased time costs), it became clear to teachers which points in the course should be paid more attention to, what to change in the presentation of educational material. Thanks to technological progress, new ways of conducting classes have appeared in a remote form. Such classes can complement traditional full-time education

Investigation of fault modelling in the identification of bearing wear severity

Recent research into machines involved in the power generation process has demanded deep investigation of model-based techniques for fault diagnosis and identification. The improvement of critical fault characterisation is crucial in the maintenance process effectiveness, hence in time/costs saving, increasing performance and productivity of the whole system. Consequently, this paper deals with a common fault in hydrodynamically lubricated bearings assembled in rotating systems, namely, that of abrasive wear. Research on this topic points to an interesting query about the significance of model detail and complexity and the identification of its characteristic parameters for the important stages of fault diagnosis and fault identification. For this purpose, two models are presented and analysed in their completeness concerning the fault signature by vibration measurements, as well as the identification of fault critical parameters which determine the machine lifetime estimation, maintenance procedures and time costs regarding performance and productivity. From this study, the detailing in fault modelling has a substantial impact on fault parameter identification, even if its improvement is not so expressive in fault diagnosis procedures involving standard signal processing techniques of vibration signatures.

Determination of the main elements and characteristics of a tuna vessel in the early stages of its design

В статье приведены результаты статистического анализа средних тунцеловных судов, позволившие определить диапазон изменения их основных элементов, выбрать судно «прототип» и провести ряд вариационных исследований по определению влияния основных элементов тунцеловного судна (изменении расчетной длины и ширины) на его качества. Ошибочно выбранные главные размерения на ранних стадиях проектирования приводят к финансовым и временным затратам в процессе проектирования и постройки судна. В связи с этим, важно на ранних стадиях проектирования для выбора оптимальных размерений, иметь показатели качеств, для каждого из выбранных габаритов судна. Для рассматриваемых вариантов судна построены теоретические чертежи, кривые элементов теоретического чертежа и проведено их цифрование. По результатам исследований мореходных качеств (проверка остойчивостии и оценка буксировочного сопротивления), а также анализа частот собственных колебаний корпуса по первому тону, при изменении расчетных длины и ширины судна, сделаны соответствующие выводы. The article presents the results of a statistical analysis of medium-sized tuna vessels, which made it possible to determine the range of changes in their main elements, choose a prototype vessel and conduct a series of variational studies to determine the influence of the main elements of a tuna vessel (change in the calculated length and width) on its quality. Incorrectly chosen main dimensions in the early stages of design lead to financial and time costs during the design and construction of the vessel. In this regard, it is important at the early stages of design to select the optimal dimensions, to have quality indicators for each of the selected dimensions of the vessel. For the variants of the vessel under consideration, theoretical drawings, curves of the elements of a theoretical drawing were constructed and digitized. Based on the results of studies of seaworthiness (stability check and assessment of towing resistance), as well as analysis of the frequencies of natural vibrations of the hull by the first tone, when changing the calculated length and width of the vessel, the corresponding conclusions were drawn.

On ways to improve the efficiency of water propellers

Objective. The purpose of the analytical review is to identify promising areas of research to improve the efficiency of water propellers.Method. The research provides an overview and analysis of modern propellers.Result. The analysis of the design – layout and schematics solutions of propeller is carried out, methods of increasing the efficiency of propellers are revealed, the main directions of further research are formed. Prospects for the development of propellers are considered, structural and layout and circuit solutions are described that ensure an increase in the efficiency of the working process, which allows to form the main directions of further scientific research. Created promising circuit solutions are closely related to the use of modern numerical methods at all stages of design, new approaches to the creation of propellers will provide an increase in efficiency by 8-10%.Conclusion. Increasing the efficiency of propellers, due to modeling workflows using numerical methods of hydrodynamics, and developing advanced schematics solutions, will not only increase the efficiency, but also improve the cavitation and acoustic characteristics of the propellers. The use of CFD calculations allows you to reduce the time, costs and volumes of product development work.

QRB−tree Indexing: Optimized Spatial Index Expanding upon the QR−tree Index

Support for region queries is crucial in geographic information systems, which process exact queries through spatial indexing to filter features and subsequently refine the selection. Although the filtering step has been extensively studied, the refinement step has received little attention. This research builds upon the QR−tree index, which decomposes space into hierarchical grids, registers features to the grids, and builds an R−tree for each grid, to develop a new QRB−tree index with two levels of optimization. In the first level, a bucket is introduced in every grid in the QR−tree index to accelerate the loading and search steps of a query region for the grids within the query region. In the second level, the number of candidate features to be eliminated is reduced by limiting the features to those registered to the grids covering the corners of the query region. Subsequently, an approach for determining the maximal grid level, which significantly affects the performance of the QR−tree index, is proposed. Direct comparisons of time costs with the QR−tree index and geohash index show that the QRB−tree index outperforms the other two approaches for rough queries in large query regions and exact queries in all cases.

Cognitive-behavioral therapy approach for children and adolescents

Cognitive-behavioral therapy is one of the most effective psychotherapeutic methods in terms of financial and time costs. Mastering of these methods is important for psychologist consultants to provide appropriate and effective assistance in addressing emotional-behavioral needs of students and those involved in the educational process in secondary, higher and professional technical education institutions. The use of cognitive-behavioral therapeutic approach in children and adolescents requires modification and adaptation of methods to the developmental levels and age characteristics of children and adolescents that is presented in this article.

Costs associated with United States pharmacopeia compliant infusion clinics

Purpose As costs continue to rise in oncology, a strategy that has been implemented to limit these costs is use of alternative sites of care. However, there are differences in regulatory standards between common sites of care such as freestanding infusion clinics and hospital outpatient departments. The costs associated with United States Pharmacopeia compliance were evaluated in order to better understand the cost of universally compliant hospital outpatient departments. Methods Annual operational costs associated with United States Pharmacopeia compliance were estimated for a 30-chair infusion clinic with United States Pharmacopeia <797> and <800> pharmacy cleanrooms for non-hazardous and hazardous drugs, respectively. Annual United States Pharmacopeia compliance costs included: competency assessments, personal protective equipment, closed system transfer devices, labels, cleaning supplies, and environmental monitoring. One-time costs included initial cleanroom construction and renovations. Published information and benchmarks provided baseline assumptions for patient volume, staffing, and unit costs. If no published data was available, prices were estimated based on a similarly sized clinic. Results Recurring annual costs for a 30-chair fully compliant infusion clinic were calculated to be $785,207. One-time costs associated with initial construction and renovations were estimated to be $1,365,207–$1,535,207 and $965,207–$1,005,207, respectively. Conclusions Costs associated with increased operational oversight and regulatory standards are a major contributing factor to the facility fee of hospital outpatient departments. Ultimately, all sites of care share in the goal to provide optimal patient care while considering all aspects of patient care, including cost. Therefore, a move towards consistent regulatory standards across all settings would aid in preventing discrepancies in care.

Logistic Solutions for the Organization of Combined Cargo Transportation

The article is devoted to the organization of combined cargo transportation in the activities of logistic operators on the Russian market. The paper considers features of the organization of combined cargo transportation and the related directions and tasks of the logistic services development in the modern market. Methodological tools of the research: analysis of the statistical sources of information reflecting the specifics, delivery schemes and problems in the organization of combined cargo transportation. The authors, conducting a study of the functioning, one of the largest 3 PL operators providing logistic services for the combined cargo transportation, identified problems in this process. This allowed to develop and offer a tool for improving this process, which reduces not only time costs, but also improves the quality of logistic service for the client.

87 Validation of a Costing Algorithm in the Neonatal Intensive Care Unit and Identification of Cost Drivers for Neonates

Primary Subject area Neonatal-Perinatal Medicine Background Neonatal Intensive Care Units (NICUs) account for over 35% of pediatric in-hospital clinical costs, thus implying that a better understanding of care expenditures within these units is the first step for improving efficiency of care. The Canadian Neonatal Network (CNN) algorithm is the first to provide case-specific costs based on resource usage among preterm infants born &lt; 37 weeks but has not yet been validated for other populations in the NICU. Objectives To validate the CNN costing algorithm in six case-mix categories with real-time costs obtained from hospital-specific financial software (CPSS) in a tertiary-level NICU and assess the variations in proportion of cost centers across case-mixes. Design/Methods A retrospective cohort study of all patients admitted within 24h of birth to a Level 3 medico-surgical NICU 2016-2019. Patient demographics, clinical information and CNN predicted costs were obtained from the CNN database. Real-time costs were obtained from the hospital financial software (CPSS). Total and daily costs were compared between sources using Pearson correlation coefficient (r) and paired Student’s t-test. Costs were adjusted to account for inter-institutional and -provincial price variations using the Cost of Standard Hospitalization Stay from the Canadian Institute for Health Information. Proportions of each cost center across the different case-mix categories were compared using Chi-square analyses. Results Among the 1795 live infants admitted into the NICU, 167 (9.3%) were &lt; 29 weeks gestational age (GA), 193 (11%) were 29-32 weeks GA, 457 (25.5%) were 33-36 weeks GA, 144 (8%) had major congenital anomalies, 179 (10%) were term infants diagnosed with Hypoxic-Ischemic Encephalopathy (HIE) and 672 (37%) were term infants with no HIE or major congenital anomalies. Median NICU costs varied according to each case-mix from $10,025 for term infants without HIE or congenital anomaly to $180,145 for infants born &lt; 29 weeks (Figure 1). Despite high variation in total NICU costs, there were small variations in median daily costs (range: $1,312-$1,941). Overall, the CNN algorithm strongly correlated with CPSS total costs across all 6 case-mix categories (r range 0.90-1.00, p-value &lt; 0 .01) (Figure 2). We report a consistent strong predictive performance of the algorithm in 5/8 pre-specified cost centers among preterm infants (r range 0.77-0.99, p-value &lt; 0 .01). Unit producing personnel (nurses and physicians) consistently comprised the largest proportion of total costs (64-78%) for all case-mix categories. Conclusion The CNN algorithm accurately predicts NICU total costs for six case-mix categories. Costs per day were comparable across different case-mix categories, and unit producing personnel represented the highest proportion of costs suggesting that reductions in length of stay would be the most efficient method to reduce NICU costs.