scholarly journals Marine Search and Rescue of UAV in Long-Distance Security Modeling Simulation

2017 ◽  
Vol 24 (s3) ◽  
pp. 192-199 ◽  
Author(s):  
Lei Zheng ◽  
Jianbo Hu ◽  
Shukui Xu
Keyword(s):  
Fault Tree Analysis ◽  
Current Method ◽  
Risk Identification ◽  
Search And Rescue ◽  
Long Distance ◽  
Factors Affecting ◽  
Aerial Vehicle ◽  
Security Modeling ◽  
Relevant Calculation

Abstract Long-distance safety of Marine search and rescue using drones can improve the searching speed. The current method is based on the long distance security classification of UAV.The degree of accuracy is low. A long-distance security modeling approach based on ArduinoMiniPro’s Marine search-and-rescue applying UAV is proposed. The method puts the fault tree analysis and relevant calculation for risk identification into use. The main factors affecting the safety of unmanned aerial vehicle (UAV) are long-distance searching and rescuing. The experimental results show that the proposed method can effectively build modeling for the long-distance safety of the Marine search and rescue UAV

IMPROVEMENT OF CLASSIFICATION OF FACTORS AFFECTING THE QUALITY OF SILICON CONNECTIONS IN SEWING PRODUCTS

2019 ◽  
pp. 86-88
Author(s):  
R. H. Batirova ◽  
S. S. Tashpulatov ◽  
I. V. Cherunova ◽  
M. A. Mansurova ◽  
S. L. Matismailov
Keyword(s):  
Factors Affecting

scholarly journals Factors affecting poor attendance for outpatient physiotherapy by patients discharged from Mthatha General Hospital with a stroke

2013 ◽  
Vol 69 (3) ◽  
Author(s):  
N.P. Ntamo ◽  
D. Buso ◽  
B. Longo-Mbenza
Keyword(s):  
Health Care ◽  
General Hospital ◽  
Specific Reference ◽  
Clinical Impression ◽  
Long Term Effects ◽  
Structured Interviews ◽  
Stroke Patients ◽  
Long Distance ◽  
Factors Affecting ◽  
Physiotherapy Department

Background: Stroke is a major cause of disability inthe world and its long term effects require adherence to physiotherapyprotocols for optimal rehabilitation. Clinical impression of data fromMthatha General Hospital (MGH) Physiotherapy Department revealedthat there was poor attendance of outpatient physiotherapy by strokepatients discharged from MGH and this had negative effects on outcomesand health care costs.Objective: To determine the extent and the socio-demographic reasonsfor poor attendance for outpatient physiotherapy by stroke patients.Methods: An observational descriptive study was conducted using arandomly selected sample of 103 stroke patients from a population of 139who attended physiotherapy in MGH in 2007. Structured interviews wereconducted and SPSS was used for data analysis.Results: The majority (86%) of patients did not attend physiotherapy until discharge from the Physiotherapy Department. Themajor reasons for poor attendance were lack of finances (95%), migration to other areas (36%), and living a long distance fromMGH (38%).Conclusion: Almost 9 out of 10 stroke patients fail to attend for outpatient physiotherapy because of lack of finances.Recommendation: Development of a Provincial Rehabilitation Policy with specific reference to decentralization of rehabilitationservices to address unavailability of physiotherapy services at clinics and health care centers which are proximal to the patients’residential areas is recommended.

scholarly journals Radiocarbon Dating of Holocene Calcareous Tufa in Southern Poland

Radiocarbon ◽  
1988 ◽  
Vol 30 (2) ◽  
pp. 133-152 ◽  
Author(s):  
Anna Pazdur ◽  
Mieczysław F Pazdur ◽  
Joachim Szulc
Keyword(s):  
High Energy ◽  
Clear Correlation ◽  
Carbonate Sediments ◽  
Radiocarbon Dates ◽  
Factors Affecting ◽  
Southern Poland ◽  
Calcareous Tufa ◽  
Organic Fractions ◽  
Apparent Age

Calcareous tufa from five sites in southern Poland, representing several most typical conditions of tufa sedimentation, were chosen for 14C, 13C, and 18O measurements. These tufas were deposited in a high-energy turbulent stream (the Racławka site), in streams with moderate but variable flow (Rzerzuśnia and Trzebienice), and in semilimnic conditions (Sieradowice site). Sediments of the Gliczarów site represent spring travertines. In all but the latter site, direct comparison of 14C dates of carbonate and organic fractions was possible, leading to an estimate of initial apparent age of carbonate sediments. Clear correlation was found between the value of initial apparent age of tufas and the hydrodynamic conditions of sedimentation. Corresponding values range from ca 3900 yr (Racławka) to 910 yr for semilimnic sediments (Sieradowice). Intermediate, almost identical values, equal to 2460 ± 200 yr and 2100 ± 160 yr, were obtained for tufas from Rzerzuśnia and Trzebienice, respectively. Detailed sedimentologic classification of tufaceous deposits is presented and some primary and secondary factors affecting the accuracy of radiocarbon dates of various types of tufas are also discussed.

scholarly journals Classification of Grass and Forb Species on Riverdike Using UAV LiDAR-Based Structural Indices

2021 ◽  
Vol 15 (3) ◽  
pp. 268-273
Author(s):  
Naoko Miura ◽  
Tomoyo F. Koyanagi ◽  
Susumu Yamada ◽  
Shigehiro Yokota ◽  
◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Imperata Cylindrica ◽  
Grass Species ◽  
Herbaceous Vegetation ◽  
Small Complex ◽  
Recent Developments ◽  
Aerial Vehicle ◽  
Conventional Systems ◽  
Structural Indices

Herbaceous vegetation on riverdikes plays an important role in preventing soil erosion, which, otherwise, may lead to the collapse of riverdikes and consequently, severe flooding. It is crucial for managers to keep suitable vegetation conditions, which include native grass species such as Imperata cylindrica, and to secure visibility of riverdikes for inspection. If managers can efficiently find where suitable grass and unsuitable forb species grow on vast riverdikes, it would help in vegetation management on riverdikes. Classification and quantification of herbaceous vegetation is a challenging task. It requires spatial resolution and accuracy high enough to recognize small, complex-shaped vegetation on riverdikes. Recent developments in unmanned aerial vehicle (UAV) technology combined with light detection and ranging (LiDAR) may offer the solution, since it can provide highly accurate, high-spatial resolution, and denser data than conventional systems. This paper aims to develop a model to classify grass and forb species using UAV LiDAR data alone. A combination of UAV LiDAR-based structural indices, V-bottom (presence of vegetation up to 50 cm from the ground) and V-middle (presence of vegetation 50–100 cm from the ground), was tested and validated in 94 plots owing to its ability to classify grass and forb species on riverdikes. The proposed method successfully classified the “upright” grass species and “falling” grass species / forb species with an accuracy of approximately 83%. Managers can efficiently prioritize the inspection areas on the riverdikes by using this method. The method is versatile and adjustable in other grassland environments.

scholarly journals The Methodical Approach to Integrated Multi-criteria Assessment of Intellectual Capital

2021 ◽  
Vol 5 (520) ◽  
pp. 281-288
Author(s):  
O. V. Stepanova ◽  
Keyword(s):  
Utility Function ◽  
Intellectual Capital ◽  
Utility Theory ◽  
Factors Affecting ◽  
Management By Objectives ◽  
Methodical Approach ◽  
Components Analysis ◽  
Capital Development ◽  
Integral Indicator

The article is aimed at developing scientific-methodological recommendations for the integrated multi-criteria assessment of intellectual capital. Achieving this goal requires solving the following tasks: analysis of the theoretical principles of intellectual capital; analysis of intellectual capital components; analysis of methods for assessment of intellectual capital; development of a multi-criteria model of integrated assessment of intellectual capital on the basis of program-target approach and utility theory. In line with the conception of management by objectives, as well as in accordance with both the systemic and the program-target approaches, the objectives of enterprise are formulated taking into account the growth, renewal and efficient use of intellectual capital. Based on the analysis of available publications, a classification of factors affecting intellectual capital is compiled. Using the structure of intellectual capital and graph theory, the «tree of purposes» of intellectual capital is built, which represents an unoriented, bound graph, the verticals (nodes) of which are purposes, and the ribs (arcs) are the links between them. A system of criteria – indicators that affect the achievement of the objectives is formulated. As a criterion for optimality of achieving the objective, it is proposed to use the multi-criteria utility function. It is noted that in order to assess intellectual capital, it is advisable to use the additive utility function, which makes it possible to compute the integral indicator of intellectual capital. This, in turn, allows to analyze the growth, renewal and efficiency of the intellectual capital of enterprise over a number of years, as well as compare enterprises with each other.

scholarly journals Arrhythmic gut microbiome signatures for risk profiling of Type-2 Diabetes

2019 ◽  
Author(s):  
Sandra Reitmeier ◽  
Silke Kießling ◽  
Thomas Clavel ◽  
Markus List ◽  
Eduardo L. Almeida ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Gut Microbiome ◽  
Prediction Models ◽  
Area Under The Curve ◽  
Factors Affecting ◽  
Risk Profiling ◽  
Initial Sampling ◽  
Risk Pattern

SummaryTo combat the epidemic increase in Type-2-Diabetes (T2D), risk factors need to be identified. Diet, lifestyle and the gut microbiome are among the most important factors affecting metabolic health. We demonstrate in 1,976 subjects of a prospective population cohort that specific gut microbiota members show diurnal oscillations in their relative abundance and we identified 13 taxa with disrupted rhythmicity in T2D. Prediction models based on this signature classified T2D with an area under the curve of 73%. BMI as microbiota-independent risk marker further improved diagnostic classification of T2D. The validity of this arrhythmic risk signature to predict T2D was confirmed in 699 KORA subjects five years after initial sampling. Shotgun metagenomic analysis linked 26 pathways associated with xenobiotic, amino acid, fatty acid, and taurine metabolism to the diurnal oscillation of gut bacteria. In summary, we determined a cohort-specific risk pattern of arrhythmic taxa which significantly contributes to the classification and prediction of T2D, highlighting the importance of circadian rhythmicity of the microbiome in targeting metabolic human diseases.

scholarly journals MATHEMATICAL MODELLING OF THE UNMANNED AERIAL VEHICLE DYNAMICS

2018 ◽  
pp. 37-44
Author(s):  
V. Y. Stepanov
Keyword(s):  
Mathematical Model ◽  
Mathematical Modelling ◽  
Unmanned Aerial Vehicle ◽  
Vehicle Dynamics ◽  
Point Of View ◽  
Dynamics Analysis ◽  
Aerial Vehicle ◽  
Main Components ◽  
Controlled Object

The article gives a classification of the main components of unmanned aerial vehicle (UAV) systems, gives the areas in which the application of UAVs is actual in practice today. Further, the UAV is considered in more detail from the point of view of its flight dynamics analysis, the equation necessary for creating a mathematical model, as well as the model of an ordinary dynamic system as a non-stationary nonlinear controlled object, is given. Next, a description of the developed software for modeling and a description of program algorithm are given. Finally, a conclusion describes the necessary directions for further scientific researches.

scholarly journals Sanitary and hygienic assessment of working conditions of civil aviation pilots

2021 ◽  
Vol 100 (10) ◽  
pp. 1084-1094
Author(s):  
Igor V. Bukhtiyarov ◽  
Evgeny V. Zibarev ◽  
Nicolay N. Kuryerov ◽  
Oksana V. Immel
Keyword(s):  
Working Conditions ◽  
Statistical Treatment ◽  
Civil Aviation ◽  
Work Intensity ◽  
Local Vibration ◽  
Factors Affecting ◽  
Separate Form ◽  
Legislative Framework ◽  
Aviation Pilots

Introduction. The analysis of working conditions of pilots of civil aviation aircraft has been carried out according to the data of sanitary and hygienic characteristics (SHC). The non-compliances with hygiene standards for several factors have been established at the same time in all SHC. Materials and methods. The 220 SHC of pilots, who had been examined in the clinic of FSBSI RIOH due to suspicion of occupation disease from 2015 to 2019, conducting flights by plane (49%) and helicopter (51%) were analyzed. The methods of account of acoustic load, hygiene assessment and classification of working conditions, peer review methods, and statistical treatment methods have been used. Results. The working conditions, according to the criteria of the Guide R 2.2.2006-05, are assigned to the following classes: 3.2 - in 26%; 3.3 - in 41%; 3.4 - in 33%. Exceeding the permissible equivalent noise levels was recorded at 92% of workplaces. According to SHC, the exceedances were from 1.2 dB to 34.5 dB (class 3.1-3.4). In assessing the work intensity in 83% of cases from 5 to 11 indicators of class 3.2 were recorded. It has determined class 3.3 of work intensity. The levels of general vibration exceeded hygiene standards in 48% of cases (class 3.1- 3.2), local vibration - in 8% (class 3.1-3.2), microclimate parameters - in 67% (class 3.1-3.2), labour severity - in 22% (class 3.1-3.3), less often there were discrepancies in light (6%) and chemical factor (2%). Conclusion. According to a combination of factors, the overall assessment of working conditions of the pilots of civil aviation aircraft in 74% of cases is assigned to classes 3.3-3.4. However, the disadvantages and errors in filling out the SHC can underestimate the degree of harmfulness of the work. To improve the procedure of establishing the connection between the disease, and the profession it is necessary to amend the legislative framework to obtain objective information about the levels of factors affecting pilots, develop a separate form of SHC of working conditions of pilots, detailed instructions about the rules of filling out SHC.

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