scholarly journals 3D INDOOR MAPPING WITH THE MICROSOFT HOLOLENS: QUALITATIVE AND QUANTITATIVE EVALUATION BY MEANS OF GEOMETRIC FEATURES

2020 ◽  
Vol V-1-2020 ◽  
pp. 165-172
Author(s):  
M. Weinmann ◽  
M. A. Jäger ◽  
S. Wursthorn ◽  
B. Jutzi ◽  
M. Weinmann ◽  
...  
Keyword(s):  
Rapid Development ◽  
Semantic Segmentation ◽  
Random Forest Classifier ◽  
Geometric Features ◽  
Qualitative And Quantitative ◽  
Fast Acquisition ◽  
Tremendous Progress ◽  
Wide Range ◽  
Microsoft Hololens

Abstract. 3D indoor mapping and scene understanding have seen tremendous progress in recent years due to the rapid development of sensor systems, reconstruction techniques and semantic segmentation approaches. However, the quality of the acquired data strongly influences the accuracy of both reconstruction and segmentation. In this paper, we direct our attention to the evaluation of the mapping capabilities of the Microsoft HoloLens in comparison to high-quality TLS systems with respect to 3D indoor mapping, feature extraction and semantic segmentation. We demonstrate how a set of rather interpretable low-level geometric features and the resulting semantic segmentation achieved with a Random Forest classifier applied on these features are affected by the quality of the acquired data. The achieved results indicate that, while allowing for a fast acquisition of room geometries, the HoloLens provides data with sufficient accuracy for a wide range of applications.

Synthesis of an algorithm for increasing the detection range of signals from radio-electronic means by means of radio control based on the estimated-correlation-compensation processing of signals with an unknown shape and additive noise in the receiving channel

2021 ◽  
Author(s):  
А.А. Boldyrev ◽  
А.А. Buben’shikov ◽  
D.I. Boldyrev
Keyword(s):  
False Alarm ◽  
Rapid Development ◽  
Internal Noise ◽  
Probability Of Detection ◽  
Detection Range ◽  
Signal Noise ◽  
Radio Electronic ◽  
Wide Range ◽  
Technical Systems

In modern conditions of rapid development of telecommunication technologies radio engineering means of different function are used everywhere in all spheres of ability to live of the person. Thus organizational-technical systems of civil appointment and power departments use the wide nomenclature of radio-electronic means of various classes with a wide spectrum of parameters, kinds of radiations and operating modes. In turn, it causes formation of difficult electromagnetic conditions in administrative-industrial regions and their near environment. The primary goal of services of radio control in these conditions is control over correctness of use by organizational-technical systems of the allocated resource of a radiofrequency spectrum and the parameters radiating of radio-electronic means. One of the main difficulties with which means of radio control in the course of the analysis of electromagnetic conditions in the set territorial area face a considerable quantity of radiating radio-electronic means with various parameters in a wide range of the relation a signal/noise, and also presence of stirring influence of any hindrances is. These factors make rigid demands to indicators of quality of functioning of panoramic detectors-direction finders which make a basis of mobile and stationary means of radio control. One of the basic indicators of quality of panoramic detectors-direction finders of means of radio control is range of detection of the radio-electronic means, defined by the set level of sensitivity and demanded values of probabilities of detection and a false alarm. Authors in article result results of working out of algorithm of increase of range of detection of signals by means of radio control on the basis of an estimated-correlation-compensatory way of measurement and indemnification of average capacity of additive hindrances in the reception channel. By results of the researches spent in article it is shown that: the increase in average capacity of cumulative external inadvertent and deliberate hindrances for the set typical initial data leads in VHF a range to reduction of range of detection of radio-electronic means not less, than in 1,4 times from the demanded; at demanded value of probability of detection, for example, and probabilities of a false alarm, at relative level of external set of a hindrance the panoramic detectors-direction finder of means of radio control with the realised procedure of measurement and indemnification of average value of capacity (dispersion) of inadvertent, deliberate hindrances and internal noise allows to lower the requirement to the threshold relation a signal/(noise) (on pressure) more, than in 1,3 times that will allow to approach value of range of detection to a reference value.

scholarly journals INFORMATION AND ACCOUNTING TECHNOLOGIES IN ENHANCING THE SECURITY OF FORMATION AND USE OF FIXED ASSETS

2021 ◽  
Author(s):  
Nataliia Korzhenivska ◽  
Nadiia Sydorak
Keyword(s):  
Information Technologies ◽  
Rapid Development ◽  
Optimal Size ◽  
Safety Assurance ◽  
New Concepts ◽  
Wide Range ◽  
Fixed Assets ◽  
Economic Transformations ◽  
Key Resources

The formation of information flows about the activities of the enterprise needs modern information technologies as a tool designed to carry out effective activities and ensure security and protection. Changing management systems requires making reasoned decisions and analyzing the current situation using flexible and adaptive technological tools. Therefore, today information acts as one of the primary resources, the value of which is no less than the value of other types of resource potential. The efficient use of these resources in the production process largely depends on the state and use of information and the sources of its receipt. Economic transformations, the growing need for protection in the formation and use of the resources of enterprises necessitate new approaches to the processing of large amounts of information and the study of individual economic processes. One of the key resources of enterprises are fixed assets as components of production potential. Having studied the advantages of the accounting and analytical support system in ensuring the quality of the information base for the formation and enhancement of the security of the formation and use of fixed assets, an appropriate structure is proposed, which is based on the level of ensuring such security, which allows separating the relevant elements and functions. In the context of the rapid development of digital technologies, the available software on the market for digital services and information processing is represented by a fairly wide range. New concepts of computer programs make it possible to more efficiently plan and manage resources, form and use the optimal size of fixed assets and effectively manage their movement. The elements and functions of the safety assurance levels of these processes make it possible to build a system of information and analytical support using modern means of information and accounting technologies. Further research involves the development of methodological recommendations for determining the economic efficiency of the use of fixed assets and the formation of proposals for the use of innovative forms of providing enterprises with fixed assets.

scholarly journals A novel universal algorithm for filament network tracing and cytoskeleton analysis

2021 ◽  
Author(s):  
D.A.D. Flormann ◽  
M. Schu ◽  
E. Terriac ◽  
D. Thalla ◽  
L. Kainka ◽  
...  
Keyword(s):  
Computational Analysis ◽  
Imaging Techniques ◽  
Rapid Development ◽  
Fluorescence And Electron Microscopy ◽  
Wide Range ◽  
Filament Networks ◽  
Analysis Of The Images ◽  
Microscopy Techniques ◽  
2D Images

AbstractThe rapid development of advanced microscopy techniques over recent decades has significantly increased the quality of imaging and our understanding of subcellular structures, such as the organization of the filaments of the cytoskeleton using fluorescence and electron microscopy. However, these recent improvements in imaging techniques have not been matched by similar development of techniques for computational analysis of the images of filament networks that can now be obtained. Hence, for a wide range of applications, reliable computational analysis of such two-dimensional (2D) methods remains challenging. Here, we present a new algorithm for tracing of filament networks. This software can extract many important parameters from grayscale images of filament networks, including the Mesh Hole Size, and Filament Length and Connectivity (also known as Coordination Number. In addition, the method allows sub-networks to be distinguished in 2D images using intensity thresholding. We show that the algorithm can be used to analyze images of cytoskeleton networks obtained using different advanced microscopy methods. We have thus developed a new improved method for computational analysis of 2D images of filamentous networks that has wide applications for existing imaging techniques. The algorithm is available as open-source software.

scholarly journals Challenges Facing the Implementation of SMASSE’S ASEI/PDSI Approaches in Teaching

2019 ◽  
Vol 15 (2) ◽  
pp. 72
Author(s):  
James Mwangi Kiige
Keyword(s):  
Social Sciences ◽  
Implementation Process ◽  
Qualitative And Quantitative ◽  
Wide Range ◽  
Opportunities For Learning ◽  
Teachers And Students ◽  
Spss Software ◽  
And Training ◽  
Mathematics And Science

Kenya, like most other developing countries, is beginning to address a wide range of problems with the heightened concern for the role played by In-service Education and Training (INSET) in improving the quality of education. Opportunities for learning through in-serving training continue to open up for teachers, a fact that has seen the initiation of programmes such as Strengthening Mathematics and Science in Secondary Education (SMASSE). SMASSE utilizes two approaches to teaching; Activity, Student-centred, Experiment, Improvisation (ASEI) and Plan, Do, See, Improve (PDSI). This paper is an instrumental guide into government decisions on the SMASSE project which has so far highlighted many challenges being faced both by the teachers and the students in the implementation process. This study proposes from the point of implementers and consumers, ways to counter the challenges. This implies that the areas of weaknesses can then be addressed. The study used a total of sixteen schools selected through stratified random sampling. The study gathered both qualitative and quantitative data which was analyzed using Statistical Package for Social Sciences (SPSS) software, Registered R and Excel. Findings are presented in tables using percentages, frequency distribution and means. A number of challenges in the implementation of SMASSE were identified. These included inadequate time, de-motivated teachers and students’ indiscipline among others. The study concludes that though SMASSE INSET does not show an impact on the performance of mathematics and chemistry, it has influenced the teachers’ ability to deliver in their teaching amidst various challenges. The author thus recommends that future SMASSE programmes should have a bottom-up approach to enable full ownership by stakeholders.

scholarly journals To the question of the necessity of optimization of business processes of modern enterprises

2019 ◽  
pp. 14-18
Author(s):  
O. N. Kolomyts ◽  
S. A. Miterev ◽  
V. S. Tomashenko
Keyword(s):  
Quality Of Service ◽  
Continuous Improvement ◽  
Process Improvement ◽  
Cycle Time ◽  
Business Processes ◽  
Rapid Development ◽  
Competitive Advantages ◽  
Wide Range ◽  
Automation Tools

The rapid development and change of technologies, growing diversification of business and other factors lead to a decrease in the efficiency of the existing system of business processes of companies, which necessitates its purposeful change, continuous improvement of both management and production activities of the organization, that is, the optimization of business processes. In this connection, the article explains the need to optimize the business processes of modern companies, which helps to identify opportunities to reduce costs, cycle time while improving the quality of service or product quality. Stages of optimization of business processes are allocated; the most often applied ways of optimization of business processes, namely: process improvement or restructuring and automation are considered; it is proved that, using for optimization the software, the organizations can manage processes faster and with fewer errors. Automation tools of business processes to optimize operations for organizations in a wide range of industries, contribute to a more efficient use of available resources and provide a more streamlined platform for employees and their tasks, help to save time, minimize costs, enhance competitive advantages and strengthen its position of competitiveness and to improve the efficiency of any company.

scholarly journals The Effect of Spatiotemporal Resolution Degradation on the Accuracy of IMERG Products over the Huai River Basin

2020 ◽  
Vol 21 (5) ◽  
pp. 1073-1088 ◽  
Author(s):  
Jianbin Su ◽  
Haishen Lü ◽  
Wade T. Crow ◽  
Yonghua Zhu ◽  
Yifan Cui
Keyword(s):  
River Basin ◽  
Rapid Development ◽  
Spatiotemporal Resolution ◽  
Huai River Basin ◽  
Wide Range ◽  
Huai River ◽  
Temporal Averaging ◽  
Autocorrelated Errors ◽  
The Huai River Basin

AbstractThe rapid development of the Integrated Multisatellite Retrievals for Global Precipitation Measurement (IMERG) precipitation product provides new opportunities for a wide range of Earth system and natural hazard applications. Spatiotemporal averaging is a common method for IMERG users to acquire suitable resolutions specific to their research or application purpose and has a direct impact on the overall quality of IMERG precipitation estimates. Here, three different IMERG, version 06 (V06), latency run products (i.e., early, late, and final) are assessed against a ground-based benchmark along a continuous series of spatiotemporal resolutions over the Huai River basin (HuaiRB) between June 2014 and May 2017. In general, IMERG products better capture the spatial pattern of precipitation, and demonstrate better reliability, in the southern portion of the HuaiRB relative to its northern region. Furthermore, the degradation of spatiotemporal resolution is associated with better rain/no-rain determination and the consistent improvement of rainfall product performance metrics. This improvement is more pronounced for IMERG products at fine spatiotemporal resolution. However, due to the presence of autocorrelated errors, the performance improvement associated with the degradation of spatiotemporal resolution is less than theoretical expectations assuming purely uncorrelated errors. Component analysis indicates that while both temporal and spatial aggregation do not mitigate temporally autocorrelated errors, temporal averaging can remove spatially autocorrelated error. Hence, temporal averaging is found to be more effective than spatial averaging for improving the quality of IMERG products. These results will inform users of the reliability of IMERG products at different spatiotemporal scales and assist in unifying former disparate validation assessments applied at different scales within the literature.

scholarly journals Improving the completeness of public metadata accompanying omics studies

2021 ◽  
Author(s):  
Anushka Rajesh ◽  
Yutong Chang ◽  
Malak S Abedalthagafi ◽  
Annie Wong-Beringer ◽  
Michael I Love ◽  
...  
Keyword(s):  
Gene Expression Omnibus ◽  
Published Data ◽  
Omics Data ◽  
Raw Data ◽  
Systematic Assessment ◽  
Tremendous Progress ◽  
Study Results ◽  
Wide Range ◽  
Public Repositories

Over the last decade there has been tremendous progress to improve the sharing of genomics data, which allows researchers to easily access the various types of data across a wide range of phenotypes. Some of the most well known public repositories are Gene Expression Omnibus, Sequence Read Archive and ArrayExpress. However, despite the availability of raw data, metadata accompanying the raw data is often unavailable. Incomplete and improperly annotated metadata on repositories proves to be a hindrance to reusing and reproducing existing data, especially for making novel discoveries. Leveraging previously published data for novel biological discoveries is only possible to its maximum extent if the metadata that accompanies raw omics data is complete and present in a standardized format. Existing literature has explored how sharing of data should be FAIR - Findable, Accessible, Interoperable and Reusable, and considered accuracy, completeness and consistency as three vital parameters to assess the quality of available metadata, although not many have examined it exclusively as an appendage to omics studies. In our study, we perform a systematic assessment of completeness of public metadata accompanying omics data. We have performed our analysis on sepsis cohorts and are currently extending the same to tuberculosis and cystic fibrosis cohorts. On comparing the data available on both platforms, we observed discrepancies between omics data and the corresponding metadata on public repositories. The results we have for the sepsis cohorts are intriguing and advocate the need to have a standardized "checklist" for researchers to submit their study results and data to public repositories. Our study opens a wide discussion about this being a potential solution to bridge the gap between omics data and metadata on repositories.

Estimating the Completeness of Range Queries over Structured P2P Databases

2012 ◽  
pp. 251-281
Author(s):  
Alfredo Cuzzocrea ◽  
Marcel Karnstedt ◽  
Manfred Hauswirth ◽  
Kai-Uwe Sattler ◽  
Roman Schmidt
Keyword(s):  
Large Scale ◽  
Web Applications ◽  
Rapid Development ◽  
Database Systems ◽  
Range Queries ◽  
Distributed Information ◽  
Wide Range ◽  
Efficient Processing ◽  
Processing Techniques

Range queries are a very powerful tool in a wide range of data management systems and are vital to a multitude of applications. The hierarchy of structured overlay systems can be utilized in order to provide efficient techniques for processing them, resulting in the support of applications and techniques based on range queries in large-scale distributed information systems. On the other hand, due to the rapid development of the Web, applications based on the P2P paradigm gain more and more interest, having such systems started to evolve towards adopting standard database functionalities in terms of complex query processing support. This goes far beyond simple key lookups, as provided by standard distributed hashtables (DHTs) systems, which makes estimating the completeness of query answers a crucial challenge. Unfortunately, due to the limited knowledge and the usually best-effort characteristics, deciding about the completeness of query results, e.g., getting an idea when a query is finished or what amount of results is still missing, is very challenging. There is not only an urgent need to provide this information to the user issuing queries, but also for implementing sophisticated and efficient processing techniques based on them. In this chapter, the authors propose a method for solving this task. They discuss the applicability and quality of the estimations, present an implementation and evaluation for the P-Grid system, and show how to adapt the technique to other overlays. The authors also discuss the semantics of completeness for complex queries in P2P database systems and propose methods based on the notion of routing graphs for estimating the number of expected query answers. Finally, they discuss probabilistic guarantees for the estimated values and evaluate the proposed methods through an implemented system.

scholarly journals PORTFOLIO AS A MEANS OF EVALUATION IN THE PREPARATION OF A FUTURE TEACHER OF MATHEMATICS

2020 ◽  
Vol 67 (3) ◽  
pp. 86-92
Author(s):  
I.B. Shmigirilova ◽  
◽  
A.S. Rvanova, ◽  
A.A. Tadzhigitov ◽  
◽  
...  
Keyword(s):  
Quantitative Assessment ◽  
Authentic Assessment ◽  
Metacognitive Skills ◽  
Qualitative And Quantitative ◽  
Educational Achievements ◽  
Academic Achievements ◽  
Wide Range ◽  
Effective System ◽  
Development Of Students

One of the significant resources for improving the quality of vocational education is an effective system for assessing students' academic achievements. The article summarizes the experience of using portfolio technology in the practice of higher pedagogical education. The possibilities of educational reflective portfolio as a means of assessing the educational results of future mathematics teachers are revealed. Assessment using a portfolio in university practice provides broad opportunities for qualitative and quantitative assessment of a wide range of educational achievements, contributes to the development of students' cognitive and metacognitive skills, to perform actions that reflect practice in the contexts of the chosen profession, and students' understanding of what it means to be a successful teacher. This confirms the idea that assessment using portfolio technology has many of the attributes of authentic assessment.

COMBINATORIAL POLYNOMIALLY COMPUTABLE CHARACTERISTICS OF SUBSTITUTIONS AND THEIR PROPERTIES

2020 ◽  
Vol 7 (2) ◽  
pp. 34-41
Author(s):  
VLADIMIR NIKONOV ◽  
◽  
ANTON ZOBOV ◽  
Keyword(s):  
Mathematical Expectation ◽  
Point Of View ◽  
Small Range ◽  
Computational Point ◽  
Wide Range ◽  
Bijective Function ◽  
The Difference ◽  
Element Base ◽  
Selection Of

The construction and selection of a suitable bijective function, that is, substitution, is now becoming an important applied task, particularly for building block encryption systems. Many articles have suggested using different approaches to determining the quality of substitution, but most of them are highly computationally complex. The solution of this problem will significantly expand the range of methods for constructing and analyzing scheme in information protection systems. The purpose of research is to find easily measurable characteristics of substitutions, allowing to evaluate their quality, and also measures of the proximity of a particular substitutions to a random one, or its distance from it. For this purpose, several characteristics were proposed in this work: difference and polynomial, and their mathematical expectation was found, as well as variance for the difference characteristic. This allows us to make a conclusion about its quality by comparing the result of calculating the characteristic for a particular substitution with the calculated mathematical expectation. From a computational point of view, the thesises of the article are of exceptional interest due to the simplicity of the algorithm for quantifying the quality of bijective function substitutions. By its nature, the operation of calculating the difference characteristic carries out a simple summation of integer terms in a fixed and small range. Such an operation, both in the modern and in the prospective element base, is embedded in the logic of a wide range of functional elements, especially when implementing computational actions in the optical range, or on other carriers related to the field of nanotechnology.

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