Zastosowanie analizy planimetrycznej w badaniach geologicznych – eksperymenty i spostrzeżenia

Nafta-Gaz ◽  
2021 ◽  
Vol 77 (8) ◽  
pp. 499-511
Author(s):  
Konrad Ziemianin ◽  
Keyword(s):  
Geological Samples ◽  
Clear Trend ◽  
Second Stage ◽  
Wide Range ◽  
Research Problems ◽  
Original Grid ◽  
Two Stages ◽  
The Relationship ◽  
Virtual Grid ◽  
Grid Based

Planimetric analysis is a well-known and commonly used method for determining the content of a given component in the area of the analyzed surface. In geology, it is used to determine both the mineral and maceral composition, and its results are helpful in solving a wide range of research problems. The aim of this study was to investigate the relationships between the obtained results of planimetric analysis and the density of the measurement grids, which can be adapted to specific situations in geological samples in order to optimize the ratio of the accuracy of the result to the time of analysis. The research was divided into two stages. Models were used in the first stage, while in the second, coal samples were investigated. In the first stage, a virtual grid of measurement points with dimensions of 100 by 100 points was created, which gave a total of 10 000 points. After creating the measurement grid model, 102 scenarios were established, differing in the content of the analyzed component A (0.1%, 0.5% and from 1 to 100%). In each of the adopted scenarios, 100 combinations were carried out so that the arrangement of points on the measurement grid corresponding to component A was random. Then, the number of measuring points was reduced several times from the original 10 000 to 100 and each time content of component A was calculated. The obtained average component A content in most cases turned out to be only slightly different from the original, which cannot be stated in the case of both minimum and maximum values – here a wider range of results is observed. In the second stage, 3 coal samples of varying maceral composition complexity were investigated and a measurement grid of 100 by 100 points was used. The original grid density was gradually reduced (down to 144 points) and maceral composition was calculated each time. Results obtained from models as well as from samples show a clear trend of decreasing accuracy with decreasing density of the measuring grid. The obtained results were also analyzed in terms of the established acceptance criteria for which the content of the component was assumed to be different from its content based on a grid of 10 000 points by up to 5%, 10% or 30% of the original value. The analysis of the relationship between the accuracy of the obtained results and the time of conducting the analysis seems to indicate that the choice of the measurement grid based on 500 points is optimal.

scholarly journals THE MEANING OF WORK AS A PREDICTOR OF THE INTENTION TO REMAIN/LEAVE AMONG TEACHERS

2018 ◽  
Vol 19 (spe) ◽  
Author(s):  
CAMILA T. HELENO ◽  
LIVIA O. BORGES ◽  
ESTEBAN AGULLÓ-TOMÁS
Keyword(s):  
Turnover Intention ◽  
Design Methodology ◽  
Meaning Of Work ◽  
Technological Education ◽  
Structured Interviews ◽  
Second Stage ◽  
Work Meaning ◽  
Job Opportunities ◽  
Two Stages ◽  
The Relationship

ABSTRACT Purpose: Assessing whether the meanings attributed to the work by teachers from a course of professional technological education (PTE), Human Resource Management (HRM) were predictors of the intention to remain in or to leave employment. Originality/value: There is a gap in the literature about the research of the relationship between working meanings and the turnover intention. Also, the recent expansion of PTE in Brazil was not accompanied by the development of research related to different aspects of the work of the teachers who work in PTE, considering that they act in a context of the historical and cultural devaluation of HRM teachers Design/methodology/approach: We developed a multi-methodological study in two stages: 1. Application of semi-structured interviews; 2. Application of structured questionnaires. Findings: The results of the first stage provided an empirical basis for constructing hypotheses concerning the prevalence of leaving intention and the prediction of this phenomenon by the components of work meaning. The results of the second stage confirmed that the leaving intention was prevalent among most HRM teachers. Also, a valuation of the dignity-humanization, the occupation and a sense of the reality of dehumanization and exhaustion are predictors of the likelihood of the leaving intention. We concluded that, despite the increased job opportunities for teachers in PTE, it does not represent a quality alternative, as well as HRM teachers, considered it a temporary option of work.

A Comparison of Revision Schemes for Cleaning Labeling Noise

2011 ◽  
pp. 220-232
Author(s):  
Chuck P. Lam ◽  
David G. Stork
Keyword(s):  
Data Quality ◽  
Improve Data Quality ◽  
Second Stage ◽  
Wide Range ◽  
Two Stages ◽  
Theoretical Analyses ◽  
Better Than

Data quality is an important factor in building effective classifiers. One way to improve data quality is by cleaning labeling noise. Label cleaning can be divided into two stages. The first stage identifies samples with suspicious labels. The second stage processes the suspicious samples using some revision scheme. This chapter examines three such revision schemes: (1) removal of the suspicious samples, (2) automatic replacement of the suspicious labels to what the machine believes to be correct, and (3) escalation of the suspicious samples to a human supervisor for relabeling. Experimental and theoretical analyses show that only escalation is effective when the original labeling noise is very large or very small. Furthermore, for a wide range of situations, removal is better than automatic replacement.

scholarly journals Optimal Therapy Scheduling Based on a Pair of Collaterally Sensitive Drugs

2017 ◽  
Author(s):  
Nara Yoon ◽  
Robert Vander Velde ◽  
Andriy Marusyk ◽  
Jacob G. Scott
Keyword(s):  
Sequential Therapy ◽  
Optimal Timing ◽  
Critical Ratio ◽  
Collateral Sensitivity ◽  
Second Stage ◽  
Initial Stage ◽  
Specific Time Point ◽  
Two Stages ◽  
The Relationship ◽  
Optimal Treatment Strategy

AbstractDespite major strides in the treatment of cancer, the development of drug resistance remains a major hurdle. One strategy which has been proposed to address this is the sequential application of drug therapies where resistance to one drug induces sensitivity to another drug, a concept called collateral sensitivity. The optimal timing of drug switching in these situations, however, remains unknown.To study this, we developed a dynamical model of sequential therapy on heterogeneous tumors comprised of resistant and sensitive cells. A pair of drugs (DrugA, DrugB) are utilized and are periodically switched during therapy. Assuming resistant cells to one drug are collaterally sensitive to the opposing drug, we classified cancer cells into two groups,ARandBR, each of which is a subpopulation of cells resistant to the indicated drug and concurrently sensitive to the other, and we subsequently explored the resulting population dynamics.Specifically, based on a system of ordinary differential equations forARandBR, we determined that the optimal treatment strategy consists of two stages: an initial stage in which a chosen effective drug is utilized until a specific time point,T, and a second stage in which drugs are switched repeatedly, during which each drug is used for a relative duration (i.e.fΔt-long forDrugAand (1 –f) Δt-long forDrugBwith 0 ≤f≤ 1 and Δt≥ 0). We prove that the optimal duration of the initial stage, in which the first drug is administered,T, is shorter than the period in which it remains effective in decreasing the total population, contrary to current clinical intuition.We further analyzed the relationship between population makeup,, and the effect of each drug. We determine a critical ratio, which we term, at which the two drugs are equally effective. As the first stage of the optimal strategy is applied,changes monotonically toand then, during the second stage, remains atthereafter.Beyond our analytic results, we explored an individual based stochastic model and presented the distribution of extinction times for the classes of solutions found. Taken together, our results suggest opportunities to improve therapy scheduling in clinical oncology.

scholarly journals SOCIAL REPRESENTATION OF RUSSIANS ABOUT DEBT

2020 ◽  
pp. 308-332
Author(s):  
М.А. Гагарина
Keyword(s):  
Empirical Study ◽  
Mental State ◽  
Scientific Literature ◽  
Social Representations ◽  
Social Representation ◽  
Empirical Testing ◽  
Moral Obligations ◽  
Second Stage ◽  
Two Stages ◽  
The Relationship

В работе рассматривается проблема соотношения научных и обыденных представлений о долге. Приведен обзор отечественных и зарубежных исследований социальных представлений о нем. Отмечается, что долг описывается как «обязанность» и как «взятое взаймы», показана недостаточная разработанность этой проблематики на данный момент. Эмпирической проверке подверглись следующие гипотезы: (1) содержание социальных представлений о долге включает представления, описывающие долг как заeм и долг как обязанность; (2) социальные представления о денежном и моральном долге могут иметь одинаковое содержание, но структура, которую они образуют, может различаться (включать сходные категории, но их различный порядок упоминания и частоту); (3) должники имеют менее рациональные социальные представления о долге, оправдывающие возможность несвоевременного возврата. Представлены результаты эмпирического исследования, включающего два этапа. На первом, с участием 120 респондентов, проведено изучение содержания социальных представлений, относящихся к денежному долгу и долгу как обязанности, и структуры, которую они образуют; на втором этапе исследования с участием 1156 респондентов, изучено содержание ядра социальных представлений о долге в контексте долгового поведения и выявлены различия представлений у должников и лиц без задолженностей. В результате показано, что социальные представления о долге согласуются с научными знаниями: долг - это психическое состояние, возникающее в ответ на необходимость исполнения как денежных, так и моральных обязательств. Социальные представления о денежном и моральном долге включают сходные категории, но их различный порядок упоминания и частоту. При рассмотрении социальных представлений о долге в контексте долгового поведения уместно говорить об их рациональности - представления о денежном долге характеризуются осознанием собственной ответственности и необходимости исполнения обязательств, а также признанием важности расчетов стоимости займа и поиска наиболее выгодных вариантов. Должники тоже имеют представления о рациональном долговом поведении, но отличаются от респондентов, не прибегающих к заимствованию, и заемщиков, исполняющих свои долговые обязательства в полном объеме, приоритетом комфортного образа жизни и допустимостью отложенного исполнения своих долговых обязательств. The paper addresses the problem of the relationship between scientific and social representations of debt. It is shown that in the scientific literature debt is described as duty and as a loan. An overview of domestic and foreign studies of social representations is given, and insufficient development of social representations of debt is shown. The following hypotheses were subjected to empirical testing: (1) social representations of debt contain components that describe debt as a loan and debt as a duty; (2) social representations about monetary debt and moral debt have the same content, but different structure; (3) debtors have less rational representations about debt. The results of an empirical study involving two stages are presented, in the first stage with the participation of 120 respondents, a comparison of the content and structure of social representations of debt as a duty and monetary is carried out; At the second stage, with the participation of 1,156 respondents, the rationality of social representations of debt of Russians with different borrowing experiences, was studied. As a result, it is shown that social representations of debt are consistent with scientific knowledge: debt is a mental state arising in response to the need to fulfill both monetary and moral obligations. Social representations of debt are characterized by an awareness of own responsibility and the necessity to fulfill obligations, as well as rationality - recognition of the importance of calculating the value of the loan and finding the most profitable options. Debtors also have ideas of rational debt behavior, but differ from respondents who do not resort to borrowing and borrowers who perform their debt obligations in full, by the priority of a comfortable lifestyle and the admissibility of delayed performance of their debt obligations.

scholarly journals Model Pengabdian Masyarakat Berbasis Kawasan

2019 ◽  
Vol 3 (2) ◽  
pp. 119
Author(s):  
Fakhruddin Fakhruddin
Keyword(s):  
Human Capital ◽  
Secondary Data ◽  
Physical Capital ◽  
Community Empowerment ◽  
Theoretical Development ◽  
Primary Data ◽  
Survey Method ◽  
Research Problems ◽  
Two Stages ◽  
The Relationship

Research problems increase community empowerment through the process of human capital and physical capital in the area around the community. The research objective is to develop a model that is supported by the concept of theoretical development. This research focuses on "process" as a key success for improving people's welfare. The relationship between capital and empowerment improvement will be tested in this study by putting the empowerment process as a mediating variable to explain activities related activities. The data used are primary and secondary data. Primary data is collected using survey method techniques through questionnaires. Furthermore, it is described and analyzed using theory. The findings of the study show that the service model leads to an increase in community empowerment, where (1) the model consists of two stages of empowerment, and (2) a model which indicates that three stages of the activity process are needed. There is a correlation where the higher the empowerment process will be able to create community empowerment. Implementation of this model states that empowerment wants the development of human capital and physical capital, and it will be even better if empowerment is supported by the development of the capacity of the actors of empowerment.

scholarly journals Virtual World: A New Paradigm in Brand Marketing

2019 ◽  
Vol 4 (4) ◽  
pp. 37-45
Keyword(s):  
Brand Awareness ◽  
Market Place ◽  
New Paradigm ◽  
Brand Engagement ◽  
Second Stage ◽  
Brand Marketing ◽  
Post Marketing ◽  
Research Findings ◽  
Two Stages ◽  
The Relationship

The main objective of this research is to measure the potential of in-game advertisement with the relation of brand awareness and brand engagement in the context of placing a different type of advertisement inside the virtual gaming world in the Indian market place. This study utilized a mixed-methods approach divided into two stages, where the first involvement of the collection of qualitative data. The second stage consisted of quantitative data collection through online questionnaires from 160 valid respondents, ranging from the age of 18 to 30 by a non-probability sampling method. SPSS and smart-pls were used to analyze the data with three statistical analysis methods: bivariate correlations, a reliability analysis to test Cronbach alpha for internal consistency; and path analysis in structural equational modeling to examine the relationship between independent and dependent variables. The research findings indicate that there is a positive, significant to place an advertisement in the virtual gaming world and it’s also fruitful for brands as per our study. Also, findings indicate that the statistical relationship between brand awareness, brand engagement, advertisement and post-marketing response in the virtual gaming world. As a result, companies operating need to focus on this new paradigm in brand marketing, as the user of the virtual game is increasing day by day and further create a way of gaining competitive advantage.

Learning to read in English as third language

2007 ◽  
Vol 10 (1) ◽  
pp. 25-52 ◽  
Author(s):  
Mila Schwartz ◽  
Esther Geva ◽  
David L. Share ◽  
Mark Leikin
Keyword(s):  
Phonological Processing ◽  
Literacy Skills ◽  
Fifth Grade ◽  
Third Language ◽  
Spelling Acquisition ◽  
Reading Accuracy ◽  
Second Stage ◽  
English Reading ◽  
Wide Range ◽  
Two Stages

The present study compared the influence of bi-literate bilingualism versus mono-literate bilingualism on the development of literary skills in English as L3. Two main predictions were made. First, it was predicted that Russian (L1) literacy would benefit decoding and spelling acquisition in English (L3), that is, bi-literate bilingualism would be superior to mono-literate bilingualism. Second, it was hypothesized that there would be positive transfer of phonological processing skills from L1 Russian to L3 English even in the context of two linguistically and orthographically distinct languages. The sample of 107 11-year-old children from Haifa, Israel, were divided into three groups matched in age, gender, social-economic level, verbal and non-verbal IQ: bi-literate bilinguals, mono-literate bilinguals and mono-literate monolinguals. The research was conducted in two stages. In the first stage a wide range of linguistic, meta-linguistic, cognitive and literacy tasks in Hebrew (L2) and in Russian (L1) were administered. In the second stage linguistic, meta-linguistic and literacy skills in English (L3) were assessed. The results demonstrated that bi-literate bilinguals outperformed mono-literate bilingual and mono-lingual children on a number of basic literacy measures (phoneme deletion and analysis, pseudoword decoding and spelling) in English (L3). Even after controlling for (L2) Hebrew reading accuracy, bi-literacy independently explained 16% of the variance in English reading accuracy among Russian-Hebrew fifth grade bilinguals.

scholarly journals Influence investigation of technological parameters on the properties of celsian­slavsonite ceramics

2019 ◽  
Vol 119 ◽  
pp. 82-88
Author(s):  
Ya. М. Pitak ◽  
G. V. Lisachuk ◽  
R. V. Krivobok ◽  
A. V. Zakharov ◽  
V. V. Voloshchuk ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Grain Size ◽  
Phase Composition ◽  
Planetary Mill ◽  
Maximum Temperature ◽  
Technological Parameters ◽  
Second Stage ◽  
Stage Synthesis ◽  
Two Stages ◽  
The Relationship

The article discusses the manufacturing technological parameters of a radiotransparent ceramic celsian­slavsonite material Ba0.5Sr0.5Al2Si2O8 in a ratio of their crystalline phases of 50:50. The technology for creating the prototype took place in two stages. The first stage — synthesis of combined celsian­slavsonote briquette was carried out in a silica furnace with an accelerated mode: the temperature set speed was 15 deg/min, the maximum firing temperature was 1300  C with holding for 1 hour. Then the synthesized briquette was ground in a planetary mill for 10 minutes (< 0.063 mm). The second stage took place at temperatures of 1300, 1350 and 1400  C with holding at a maximum temperature of 1, 2 and 3 hours. Studies of samples on dielectric properties, water absorption and open porosity were carried out. The phase composition of obtained materials and their microstructure were investigated. The relationship between a dielectric constant and a grain size of the crystalline phase (Ba0.5Sr0.5Al2Si2O8) was established. The best indicators had the samples burned at a temperature of 1300—1350  C in an oxidized environment, with holding at a maximum temperature of 1—2 hours (ε = 4.264.52, W = 1.842.31  %, Pоpen = 4.355.43  %).

scholarly journals Does the height to entrepreneurship nexus have two stages? New evidence from 27 nations

2021 ◽  
Author(s):  
Nazim Habibov ◽  
Alena Auchynnikava ◽  
Rong Luo
Keyword(s):  
University Education ◽  
Percentage Point Increase ◽  
Second Stage ◽  
Point Increase ◽  
Stage Process ◽  
Main Determinants ◽  
Set Up ◽  
Two Stages ◽  
New Evidence ◽  
The Relationship

AbstractWe examine the association between height and entrepreneurship in 27 nations, finding that the relationship between height and entrepreneurship can be considered to be a two-stage process. During the first stage, individuals make the decision of whether or not to try to set up their own business. At this stage, the effect of height is stronger: each 10-cm increase in height is associated with an approximately 1.4 percentage point increase in the probability of having tried to set up a business. During the second stage, after a positive decision to embark upon entrepreneurship has already been taken, people may find success in setting up their business. At this stage, although taller individuals are still more likely to experience success than their shorter counterparts, the effect of height becomes much weaker. Each 10-cm increase in height is associated with an approximately 0.4 percentage point increase in the probability of having tried to set up a business without success, and an approximately 0.4 percentage point increase in the likelihood of having set up a business in which the respondent is no longer involved, or that is no longer operational. Finally, each 10-cm increase in height is associated with an approximately 1 percentage point increase in the probability of remaining an entrepreneur. At the same time, we found that the effect of height is stronger in magnitude than the effects of gender, health and university education. This finding is remarkable insofar as gender, health and university education are usually considered to be the main determinants of entrepreneurship.

Altered Fine Structure of B Lymphocytes Correlated with Defective Terminal Differentiation

1973 ◽  
Vol 31 ◽  
pp. 386-387
Author(s):  
Dale E. Bockman ◽  
L. Y. Frank Wu ◽  
Alexander R. Lawton ◽  
Max D. Cooper
Keyword(s):  
Immune Deficiency ◽  
B Lymphocytes ◽  
Plasma Cells ◽  
Present Report ◽  
Specific Antigen ◽  
Terminal Differentiation ◽  
Second Stage ◽  
Two Stages ◽  
Deficiency Diseases ◽  
Cell Line Generation

B-lymphocytes normally synthesize small amounts of immunoglobulin, some of which is incorporated into the cell membrane where it serves as receptor of antigen. These cells, on contact with specific antigen, proliferate and differentiate to plasma cells which synthesize and secrete large quantities of immunoglobulin. The two stages of differentiation of this cell line (generation of B-lymphocytes and antigen-driven maturation to plasma cells) are clearly separable during ontogeny and in some immune deficiency diseases. The present report describes morphologic aberrations of B-lymphocytes in two diseases in which second stage differentiation is defective.

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