scholarly journals METHODOLOGY FOR ASSESSING THE RISK ASSOCIATED WITH INFORMATION AND KNOWLEDGE LOSS MANAGEMENT

2021 ◽  
Vol 22 (2) ◽  
pp. 369-387
Author(s):  
Hanna Yarovenko ◽  
Yuriy Bilan ◽  
Serhiy Lyeonov ◽  
Grzegorz Mentel
Keyword(s):  
Risk Group ◽  
Time Lag ◽  
Mapping Method ◽  
Risk Map ◽  
Technical Problems ◽  
Knowledge Loss ◽  
Significant Events ◽  
Minimum Number ◽  
Low Probability ◽  
Reliable Methods

In practice, there is a massive time lag between data loss and its cause identification. The existing techniques perform it comprehensively, but they consume too much time, so there is a need for fast and reliable methods. The article’s purpose is to develop a rapid methodology to assess the risk of information and knowledge loss management. It provides the implementation of eight steps and combines a risk mapping method modified by assessments based on risk factors and incidents as elements from set theory and using formalization via binary estimates. The methodology includes five significant events caused by the company staff, technical problems, software, cybercriminals, viral attacks, and 66 factors influencing company incidents. As a result, a risk map of 9 groups was built for a Ukrainian enterprise. Only two groups with the minimum number of incidents and low losses are represented by all five incidents. The defined overall level of each risk group ranges from 0.14 to 0.26, which indicates a low probability of all happenings in the group. In general, the resulting map shows the existence of specific security problems of the company under investigation. The proposed assessment allows us to interpret the level of risk in the company quickly, identify weaknesses in the information security system, and predict future losses.

scholarly journals Connect Resound: Using online technology to deliver music education to remote communities

2019 ◽  
Vol 12 (2) ◽  
pp. 201-217 ◽  
Author(s):  
Andrew King ◽  
Helen Prior ◽  
Caroline Waddington-Jones
Keyword(s):  
United Kingdom ◽  
Music Education ◽  
Primary Schools ◽  
Time Lag ◽  
Business Case ◽  
Video Data ◽  
Action Research Project ◽  
Technical Problems ◽  
Geographical Regions ◽  
Roll Out

This article describes an action research project that aimed to widen participation for music education in schools in England (United Kingdom). The Connect Resound project involved a pilot stage in North Yorkshire (England, United Kingdom) followed by a roll-out to four further geographical regions of England: Cumbria; Durham/Darlington; East Riding of Yorkshire; and Cornwall. The project involved testing a technological framework created to bring music education to schools with little or no music instrumental lessons within primary schools at key stage 2 (pupils aged 7–11 years). The pilot and roll-out phases refined the approach and established a business case for a grant to roll out the project nationally in 2017. The approach used in the study provided not only the instrumental lessons but also continuing professional development for teachers, on-demand technical support, and access to music performances and masterclasses. The research team designed and tested several scenarios for using technology in this environment some of which were using single cameras and others that used a multi-camera set-up. One of the approaches used technology to allow the teachers and pupils access to different camera angles and high-quality audio to deliver the lessons which proved beneficial. The project team captured both video data as well as interviews and questionnaires with participants in order to better understand and refine the approach developed. This article reports upon the challenges and opportunities provided by the project in terms of the technology and environment, an evaluation using a case study approach of how the teachers used the technology, and feedback in the form of questionnaires from pupils and parents/carers concerning the lessons. Issues around the technology concerned time lag, initial technical problems, and background noise in the teaching environment amplified by the technology. The different camera angles adopted in the project proved valuable for teachers, potential issues with assembling and tuning instruments were considered, and beginner technique could be demonstrated using this approach.

scholarly journals How serious a problem is subsoil compaction in the Netherlands? A survey based on probability sampling

SOIL ◽  
2018 ◽  
Vol 4 (1) ◽  
pp. 37-45 ◽  
Author(s):  
Dick J. Brus ◽  
Jan J. H. van den Akker
Keyword(s):  
High Risk ◽  
The Netherlands ◽  
Bulk Density ◽  
Soil Compaction ◽  
Risk Group ◽  
Low Risk ◽  
Risk Map ◽  
Areal Fraction ◽  
Relative Porosity ◽  
Subsoil Compaction

Abstract. Although soil compaction is widely recognized as a soil threat to soil resources, reliable estimates of the acreage of overcompacted soil and of the level of soil compaction parameters are not available. In the Netherlands data on subsoil compaction were collected at 128 locations selected by stratified random sampling. A map showing the risk of subsoil compaction in five classes was used for stratification. Measurements of bulk density, porosity, clay content and organic matter content were used to compute the relative bulk density and relative porosity, both expressed as a fraction of a threshold value. A subsoil was classified as overcompacted if either the relative bulk density exceeded 1 or the relative porosity was below 1. The sample data were used to estimate the means of the two subsoil compaction parameters and the overcompacted areal fraction. The estimated global means of relative bulk density and relative porosity were 0.946 and 1.090, respectively. The estimated areal fraction of the Netherlands with overcompacted subsoils was 43 %. The estimates per risk map unit showed two groups of map units: a “low-risk ” group (units 1 and 2, covering only 4.6 % of the total area) and a “high-risk” group (units 3, 4 and 5). The estimated areal fraction of overcompacted subsoil was 0 % in the low-risk unit and 47 % in the high-risk unit. The map contains no information about where overcompacted subsoils occur. This was caused by the poor association of the risk map units 3, 4 and 5 with the subsoil compaction parameters and subsoil overcompaction. This can be explained by the lack of time for recuperation.

scholarly journals Evaluation of an immunity status against measles of health workers in Kharkiv city

2019 ◽  
Keyword(s):  
Blood Serum ◽  
Measles Virus ◽  
Health Workers ◽  
Risk Group ◽  
Age Groups ◽  
Age Group ◽  
Protective Level ◽  
Minimum Number

Objectives. The purpose of this article was to determine the intensity of immunity against measles among health workers in Kharkov to identify and vaccinate susceptible individuals. Materials and methods. ELISA levels of specific measles IgG in blood serum of health workers were studied. Results. It was shown that the largest number of measles-susceptible individuals is observed in the age group of 18 to 27 years (9 % do not have a protective level of antibodies (AT); 7.7 % have a dubious level of protection). In the age groups from 28 to 37 years old and from 38 to 47 years old, a rather large number of measles-sensitive health workers was also detected (6.9 % and 6.1 % - with the absence of a protective level of AT and 6.9 % and 5.1 % - with a dubious level of protection, respectively). The minimum number of measles unprotected health workers was determined in the group aged 48 to 57 years (0.9 % of negative and doubtful results), and among physicians older than 57 years, there were no individuals with a lack of protective levels of antibodies to measles virus. Conclusions. Possible reasons for the prevalence of measles-unprotected health workers in the age groups from 18 to 47 years and the absence of unprotected people in the group of people over 57 are discussed. Doctors are a professional risk group for contracting infections (including measles). The article argues that there is no need for vaccination against measles for medical workers over 57 years old and vaccination of representatives of other age groups is recommended only after determining the strength of measles immunity, since more than 90 % of medical workers have protective levels of IgG.

scholarly journals How serious a problem is soil compaction in the Netherlands? A survey based on probability sampling

2017 ◽  
Author(s):  
Dick J. Brus ◽  
Jan J. H. van den Akker
Keyword(s):  
High Risk ◽  
The Netherlands ◽  
Bulk Density ◽  
Soil Compaction ◽  
Risk Group ◽  
Organic Matter Content ◽  
Low Risk ◽  
Risk Map ◽  
Areal Fraction ◽  
Relative Porosity

Abstract. Although soil compaction is widely recognized as a soil threat to soil resources, reliable estimates of the acreage of overcompacted soil and of the level of soil compaction parameters are not available. In the Netherlands data on soil compaction were collected at 128 locations selected by stratified random sampling. A map showing the risk of soil compaction in five classes was used for stratification. Measurements of bulk density, porosity, clay content and organic matter content were used to compute the relative bulk density and relative porosity, both expressed as a fraction of a threshold value. A soil was classified as overcompacted if either the relative bulk density exceeds 1 or the relative porosity is below 1. The sample data were used to estimate the means of the two soil compaction parameters and the areal fraction overcompacted. The estimated global means of relative bulk density and relative porosity were 0.946 and 1.090, respectively. The estimated areal fraction of the Netherlands with overcompacted soils was 45 %. The estimates per risk map unit showed two groups of map units, a `low risk ' group (unit 1 and 2, covering only 4.6 % of the total area) and a `high risk' group (unit 3, 4 and 5). The estimated areal fraction overcompacted soil was 0 % in the `low risk' unit and 47 % in the `high risk' unit. The map contains no information about where overcompacted soils occur. This was caused by the poor association of the risk map units 3, 4 and 5 with the soil compaction parameters and soil overcompaction. This can be explained by the lack of time for recuperation.

X-Ray Analysis of Frozen Hydrated Sections:The Unconventional Approach

1982 ◽  
Vol 40 ◽  
pp. 754-757
Author(s):  
R. Beeuwkes ◽  
A. Saubermann ◽  
P. Echlin ◽  
S. Churchill
Keyword(s):  
Ratio Method ◽  
Frozen Sections ◽  
Technical Problems ◽  
Sample Handling ◽  
X Ray ◽  
Common Group ◽  
Ideal Method ◽  
Classic Paper ◽  
Physical Principles ◽  
The Ideal

Fifteen years ago, Hall described clearly the advantages of the thin section approach to biological x-ray microanalysis, and described clearly the ratio method for quantitive analysis in such preparations. In this now classic paper, he also made it clear that the ideal method of sample preparation would involve only freezing and sectioning at low temperature. Subsequently, Hall and his coworkers, as well as others, have applied themselves to the task of direct x-ray microanalysis of frozen sections. To achieve this goal, different methodological approachs have been developed as different groups sought solutions to a common group of technical problems. This report describes some of these problems and indicates the specific approaches and procedures developed by our group in order to overcome them. We acknowledge that the techniques evolved by our group are quite different from earlier approaches to cryomicrotomy and sample handling, hence the title of our paper. However, such departures from tradition have been based upon our attempt to apply basic physical principles to the processes involved. We feel we have demonstrated that such a break with tradition has valuable consequences.

On the High Voltage Electron Microscopy (1 MeV) of Biological Thick Sections

1972 ◽  
Vol 30 ◽  
pp. 464-465
Author(s):  
William H. Massover
Keyword(s):  
Electron Microscopy ◽  
High Voltage ◽  
Present Report ◽  
Biological Tissues ◽  
Specimen Preparation ◽  
Technical Problems ◽  
High Voltage Electron Microscopy ◽  
Thin Sections ◽  
Voltage Electron ◽  
High Voltage Electron

Stereoscopic examination of thick sections of fixed and embedded biological tissues by high voltage electron microscopy has been shown to allow direct visualization of three-dimensional fine structure. The present report will consider the occurrence of some new technical problems in specimen preparation and Image interpretation that are not common during lower voltage studies of thin sections.Thick Sectioning and Tissue Coloration - Epon sections of 0.5 μm or more that are cut with glass knives do not have a uniform thickness as Judged by their interference colors; these colors change with time during their flotation on the knife bath, and again when drying onto the specimen support. Quoted thicknesses thus must be considered only as rough estimates unless measured in specific regions by other methods. Chloroform vapors do not always result in good spreading of thick sections; however, they will spread spontaneously to large degrees after resting on the flotation bath for several minutes. Ribbons of thick sections have been almost impossible to obtain.

Information capacity and bandwidth limitations in the SEM

1989 ◽  
Vol 47 ◽  
pp. 84-85
Author(s):  
D. C. Joy ◽  
R. D. Bunn
Keyword(s):  
Signal To Noise Ratio ◽  
Critical Dimension ◽  
Information Capacity ◽  
Acquisition Time ◽  
Signal To Noise ◽  
Sem Image ◽  
Probe Size ◽  
Minimum Number ◽  
Noise Ratio ◽  
Signal Channel

The information available from an SEM image is limited both by the inherent signal to noise ratio that characterizes the image and as a result of the transformations that it may undergo as it is passed through the amplifying circuits of the instrument. In applications such as Critical Dimension Metrology it is necessary to be able to quantify these limitations in order to be able to assess the likely precision of any measurement made with the microscope.The information capacity of an SEM signal, defined as the minimum number of bits needed to encode the output signal, depends on the signal to noise ratio of the image - which in turn depends on the probe size and source brightness and acquisition time per pixel - and on the efficiency of the specimen in producing the signal that is being observed. A detailed analysis of the secondary electron case shows that the information capacity C (bits/pixel) of the SEM signal channel could be written as :

Detection, Averaging, and 3D Reconstruction of Biological Specimens on Hypercubes (Transputer-based) Computers

1990 ◽  
Vol 48 (1) ◽  
pp. 454-455
Author(s):  
Jose-Maria Carazo ◽  
I. Benavides ◽  
S. Marco ◽  
J.L. Carrascosa ◽  
E.L. Zapata
Keyword(s):  
3D Reconstruction ◽  
3D Structure ◽  
Three Dimensional ◽  
Software Tools ◽  
Mapping Method ◽  
Computer Architectures ◽  
Parallel Computer ◽  
Reconstruction Process ◽  
Computing Power ◽  
Order Of Magnitude

Obtaining the three-dimensional (3D) structure of negatively stained biological specimens at a resolution of, typically, 2 - 4 nm is becoming a relatively common practice in an increasing number of laboratories. A combination of new conceptual approaches, new software tools, and faster computers have made this situation possible. However, all these 3D reconstruction processes are quite computer intensive, and the middle term future is full of suggestions entailing an even greater need of computing power. Up to now all published 3D reconstructions in this field have been performed on conventional (sequential) computers, but it is a fact that new parallel computer architectures represent the potential of order-of-magnitude increases in computing power and should, therefore, be considered for their possible application in the most computing intensive tasks.We have studied both shared-memory-based computer architectures, like the BBN Butterfly, and local-memory-based architectures, mainly hypercubes implemented on transputers, where we have used the algorithmic mapping method proposed by Zapata el at. In this work we have developed the basic software tools needed to obtain a 3D reconstruction from non-crystalline specimens (“single particles”) using the so-called Random Conical Tilt Series Method. We start from a pair of images presenting the same field, first tilted (by ≃55°) and then untilted. It is then assumed that we can supply the system with the image of the particle we are looking for (ideally, a 2D average from a previous study) and with a matrix describing the geometrical relationships between the tilted and untilted fields (this step is now accomplished by interactively marking a few pairs of corresponding features in the two fields). From here on the 3D reconstruction process may be run automatically.

Applying Generalizability Theory to Optimize Analysis of Spontaneous Teacher Talk in Elementary Classrooms

2020 ◽  
Vol 63 (6) ◽  
pp. 1947-1957
Author(s):  
Alexandra Hollo ◽  
Johanna L. Staubitz ◽  
Jason C. Chow
Keyword(s):  
Special Education Teachers ◽  
Generalizability Theory ◽  
Child Outcomes ◽  
Elementary Classrooms ◽  
Teacher Talk ◽  
Group Instruction ◽  
Data Set ◽  
School Year ◽  
Minimum Number ◽  
Representative Samples

Purpose Although sampling teachers' child-directed speech in school settings is needed to understand the influence of linguistic input on child outcomes, empirical guidance for measurement procedures needed to obtain representative samples is lacking. To optimize resources needed to transcribe, code, and analyze classroom samples, this exploratory study assessed the minimum number and duration of samples needed for a reliable analysis of conventional and researcher-developed measures of teacher talk in elementary classrooms. Method This study applied fully crossed, Person (teacher) × Session (samples obtained on 3 separate occasions) generalizability studies to analyze an extant data set of three 10-min language samples provided by 28 general and special education teachers recorded during large-group instruction across the school year. Subsequently, a series of decision studies estimated of the number and duration of sessions needed to obtain the criterion g coefficient ( g > .70). Results The most stable variables were total number of words and mazes, requiring only a single 10-min sample, two 6-min samples, or three 3-min samples to reach criterion. No measured variables related to content or complexity were adequately stable regardless of number and duration of samples. Conclusions Generalizability studies confirmed that a large proportion of variance was attributable to individuals rather than the sampling occasion when analyzing the amount and fluency of spontaneous teacher talk. In general, conventionally reported outcomes were more stable than researcher-developed codes, which suggests some categories of teacher talk are more context dependent than others and thus require more intensive data collection to measure reliably.

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