Visual and Instrumental Colorimetric Assessments of Small Color Differences on Translucent Dental Porcelain

1989 ◽  
Vol 68 (12) ◽  
pp. 1760-1764 ◽  
Author(s):  
R.R. Seghi ◽  
E.R. Hewlett ◽  
J. Kim
Keyword(s):  
Material Selection ◽  
Color Difference ◽  
Human Observer ◽  
Clinical Use ◽  
Restorative Dentistry ◽  
Colorimetric System ◽  
Color Differences ◽  
Precise Relationship ◽  
The Relationship ◽  
Further Development

The CIELAB colorimetric system was used for the study of the relationship between measured color difference values and human observer responses. This study verified that a specific, visually meaningful and precise relationship exists between the magnitude and direction of the measurements and the average dental-observer responses. The results support the use of this system in dentistry as a means of evaluating color by differences. The further development of such systems for clinical use would be warranted and could serve as a valuable tool for material selection and restoration design, particularly in the area of aesthetic restorative dentistry.

scholarly journals Gender-Dependent Quality of Shade Matching of Dental Professionals and Students

2020 ◽  
Vol 54 (4) ◽  
pp. 363-370
Author(s):  
Žarko Udiljak ◽  
Hrvoje Pezo ◽  
Robert Ćelić
Keyword(s):  
Color Difference ◽  
Dental Students ◽  
Lower Percentage ◽  
Final Test ◽  
Color Differences ◽  
Shade Matching ◽  
The One ◽  
The Relationship ◽  
Dental Professionals

Objectives: The purpose of this study was to evaluate shade matching ability of dental professionals and students using the VITA 3D-Master shade guide. Materials and methods: A hundred and twenty participants have been assigned to one of four groups as follows: specialists in prosthodontics (SPs), residents in prosthodontics (RPs), dental technicians (DTs) and dental students (DSs). The Toothguide Training Box (TTB) was used to test the participants’ shade-matching ability based on using 3 exercises and a final test. The mistakes were recorded during the exercises and mistake ratios (MR) were calculated. Time, scores, and color difference values (ΔE) were recorded and calculated. The one-way ANOVA was used to analyze the differences, and multiple regression analyses were used to evaluate the relationship in mean MRs, time, score and ΔE values between the groups. Results: Male participants needed significantly greater amount of time than females to complete the final test (P<0.05). Male SPs achieved a significantly lower percentage of mistake ratios in second exercise than RPs (P<0.05), needed significantly less time than DSs to complete the final test and achieved significantly higher scores than RPs (P<0.05). Female SPs assessed the highest and DSs and RPs the lowest color differences (P<0.05). The results obtained from the exercises and final tests highly affected the amount of estimated color difference in both male and female groups (by 78% and 76%, respectively). Conclusions: Within the population tested, gender of the participants showed a significant impact on quality of shade matching of dental professionals and students.

FORMALIZED DESCRIPTION OF THE PROCEDURE OF INFORMATION SYSTEM RISK MANAGEMENT

2018 ◽  
pp. 61-70
Author(s):  
Svetlana Sergeevna Kozunova ◽  
Alla Grigorievna Kravets
Keyword(s):  
Information System ◽  
Risk Management ◽  
Negative Consequences ◽  
Management Procedure ◽  
System Risk ◽  
Weak Points ◽  
Formalized Description ◽  
Relationship Of ◽  
The Relationship ◽  
Further Development

The article highlights the aspects of risk management in the information system. According to the analysis of the work of Russian and foreign scientists and world practices in the field of risk management, it is stated that there is a need to improve the effectiveness of risk management of information system and to develop a method for managing the risks of the information system. As a solution to the problem of effective risk management of the information system, there has been proposed a formalized procedure for managing the risks of the information system. The scientific novelty of this solution is the use of decision space and optimization space to reduce risks. This procedure allows to assess the damage, risk and effectiveness of risk management of the information system. The risks of the information system are determined and analyzed; a pyramidal risk diagram is developed. This diagram allows you to describe the relationship of risks with the components of the information system. The negative consequences to which these risks can lead are given. The analysis of methods and approaches to risk management has been carried out. Based on the results of the analysis, the methods GRAMM, CORAS, GOST R ISO / IEC scored to the maximum. The weak points of these methods and the difficulty of applying these methods in practice are described. The developed formalized risk management procedure to control the risks of information system can be used as management system’s element of the information security quality that complies with the recommendations of GOST R ISO / IEC 27003-2012. The prospect of further development of the research results is the development of management systems of risk of information system.

scholarly journals The Principle of Directive-Compliant Development of the Law and the Contra Legem Limit

2020 ◽  
Vol 16 (4) ◽  
pp. 465-488
Author(s):  
Thomas M.J. Möllers
Keyword(s):  
Case Law ◽  
Third Party ◽  
Broad Term ◽  
Legal Texts ◽  
Classical Methodology ◽  
The Law ◽  
Legal Methodology ◽  
The Relationship ◽  
Further Development ◽  
Domestic Law

AbstractThe Europeanisation of domestic law calls for a classical methodology to ‘update’ the established traditions of the law. The relationship between European directives and national law is difficult, since directives do apply, but European legal texts need to be implemented into national law. Whilst directives are not binding on private individuals, there is no direct third-party effect, but only an ‘indirect effect’. This effect is influenced by the stipulations of the ECJ, but is ultimately determined in accordance with methodical principles of national law. The ECJ uses a broad term of interpretation of the law. In contrast, in German and Austrian legal methodology the wording of a provision defines the dividing line between interpretation and further development of the law. The article reveals how legal scholars and the case-law have gradually shown in recent decades a greater willingness to shift from a narrow, traditional boundary of permissible development of the law to a modern line of case-law regarding the boundary of directive-compliant, permissible development of the law.

Mechanoreceptor afferent activity compared with receptor field dimensions and pressure changes in feline urinary bladder

1992 ◽  
Vol 70 (11) ◽  
pp. 1457-1467 ◽  
Author(s):  
John W. Downie ◽  
J. Andrew Armour
Keyword(s):  
Contractile Activity ◽  
Bladder Wall ◽  
Afferent Activity ◽  
Intravesical Pressure ◽  
Receptor Field ◽  
Precise Relationship ◽  
Pressure Changes ◽  
The Relationship ◽  
Simple Fashion ◽  
Pressure Receptor

The relationship between vesical mechanoreceptor field dimensions and afferent nerve activity recorded in pelvic plexus nerve filaments was examined in chloralose-anesthetized cats. Orthogonal receptor field dimensions were monitored with piezoelectric ultrasonic crystals. Reflexly generated bladder contractile activity made measurements difficult, therefore data were collected from cats subjected to actual sacral rhizotomy. Afferent activity was episodic and was initiated at different pressure and receptor field dimension thresholds. Maximum afferent activity did not correlate with maximum volume or pressure. Furthermore, activity was not linearly related to intravesical pressure, receptor field dimensions, or calculated wall tension. Pressure–length hysteresis of the receptor fields occurred. The responses of identified afferent units and their associated receptor field dimensions to brief contractions elicited by the ganglion stimulant 1,1-dimethyl-4-phenylpiperazinium iodide (2.5–20 μg i.a.), studied under constant volume or constant pressure conditions, are compatible with bladder mechanoreceptors behaving as tension receptors. Because activity generated by bladder mechanoreceptors did not correlate in a simple fashion with intravesical pressure or receptor field dimensions, it is concluded that such receptors are influenced by the viscoelastic properties of the bladder wall. Furthermore, as a result of the heterogeneity of the bladder wall, receptor field tension appears to offer a more precise relationship with the activity of bladder wall mechanoreceptors than does intravesical pressure.Key words: bladder distension, intravesical pressure, sacral rhizotomy, viscoelasticity.

scholarly journals Countrywide survey on utilization of medical devices by GPs in Hungary: advantages of the cluster-practice model

2021 ◽  
Vol 22 ◽  
Author(s):  
Katalin Dózsa ◽  
Fruzsina Mezei ◽  
Tamás Tóth ◽  
Ábel Perjés ◽  
Péter Pollner
Keyword(s):  
Medical Devices ◽  
Point Of Care ◽  
Daily Practice ◽  
Evidence Based ◽  
Self Assessment ◽  
Practice Model ◽  
Practice Models ◽  
Integrate State ◽  
The Relationship ◽  
Further Development

Abstract Background: Expectations towards general practitioners (GPs) are continuously increasing to provide a more systematic preventive- and definitive-based care, a wider range of multidisciplinary team-based services and to integrate state-of-the-art digital solutions into daily practice. Aided by development programmes, Hungarian primary care is facing the challenge to fulfil its role as the provider of comprehensive, high quality, patient-centred, preventive care, answering the challenges caused by non-communicable diseases (NCDs). Aim: The article aims to provide an insight into the utilization of simple, digital, medical devices. We show the relationship between the primary health care (PHC) practice models and the used types of devices. We point at further development directions of GP practices regarding the utilization of evidence-based medical technologies and how such devices support the screening and chronic care of patients with NCDs in everyday practice. Methods: Data were collected using an online self-assessment questionnaire from 1800 Hungarian GPs registered in Hungary. Descriptive statistics, Wilcoxon’s test and χ2 test were applied to analyze the ownership and utilization of 32 types of medical devices, characteristics of the GP practices and to highlight the differences between traditional and cluster-based operating model. Findings: Based on the responses from 27.7% of all Hungarian GPs, the medical device infrastructure was found to be limited especially in single GP-practices. Those involved in development projects of GP’s clusters in the last decade reported a wider range and significantly more intensive utilization of evidence-based technologies (average number of devices: 5.42 versus 7.56, P<.001), but even these GPs are not using some of their devices (e.g., various point of care testing devices) due to the lack of financing. In addition, GPs involved in GPs-cluster development model programmes showed significantly greater willingness for sharing relatively expensive, extra workforce-demanding technologies (χ2 = 24.5, P<.001).

Stimulating the Development of "Greening" of Ukrainian Industry

2021 ◽  
pp. 55-67
Author(s):  
Ella Sheludko ◽  
◽  
Mariia Zavgorodnia ◽  
Keyword(s):  
Public Policy ◽  
Large Scale ◽  
Industrial Enterprises ◽  
Valuation Method ◽  
Circular Model ◽  
Analysis And Synthesis ◽  
Logical Method ◽  
Modern Economic ◽  
The Relationship ◽  
Further Development

The object of this study is the further development of eco-innovations for the rise of industry and the economy. Emphasis is placed on the growing relevance of "green" incentives in line with climate challenges, the economical use of natural resources, as well as the need for a systematic vision of environmental issues and the implementation of international requirements. The study is based on the work of foreign scientists, international rankings and world best practices for the introduction of modern economic mechanisms of state incentives for greening the economy, green modernization, the transition to a circular model of the economy. There is a difference in the implementation of environmental policy - some local projects in Ukraine and the European approach - with the assessment of eco-innovation, systemic change, the formation of ecosystems, scaling technological solutions. The main methods used in the study are: methods of system-structural analysis, analysis and synthesis, grouping - for preliminary analysis and selection of appropriate tools in the study of the implementation of eco-innovation in Ukraine and EU countries; index valuation method and method of comparative analysis - used in the analysis of public policy to stimulate the company to "green" growth; abstract-logical method - used to establish the relationship between the need to introduce new instruments of public policy in the environmental sphere with elements of large-scale reform in the context of climate modernization of industry and to form a systematic vision of major achievements in implementing international requirements for eco-modernization of industrial enterprises. The paper analyzes the forms of international assistance that can compensate for the lack of available financial resources for the purposes of green modernization of the economy in conditions of limited financial capabilities of the state, intensification of competition for European and international environmental investments. The obtained result - a set of possible tools to stimulate Ukrainian industry - allows more systematic implementation of "greening" of Ukrainian industry, and their implementation and combination in a specific mechanism will determine the success of an industrial socially-oriented economy.

Depressive Disorder in Primary Care

1987 ◽  
Vol 150 (6) ◽  
pp. 737-751 ◽  
Author(s):  
C. V. R. Blacker ◽  
A. W. Clare
Keyword(s):  
Primary Care ◽  
Depressive Symptoms ◽  
Depressive Disorders ◽  
Psychiatric Morbidity ◽  
Depressive Illness ◽  
Psychiatric Disturbance ◽  
Collaborative Studies ◽  
Effect Of Treatment ◽  
Precise Relationship ◽  
The Relationship

Since the pioneering study of psychiatric morbidity in primary care by Shepherdet alin 1966, it has become increasingly apparent that a substantial proportion (between 20% and 25%) of patients consulting their GP are suffering from some form of psychiatric disturbance (Goldberg & Blackwell, 1970; Hoeperet al,1979). The composition of this psychiatric morbidity has been shown to be almost wholly affective in nature and largely mild in degree. In their important review Jenkins & Shepherd (1983) recently summarised the now extensive findings relating to overall minor psychiatric morbidity in primary care. However, recent collaborative studies between psychiatrists and GPs have identified that within this dilute pool of minor disorders, lurks a significant but poorly served population of patients suffering from depressive disorders which are by no means minor in degree. A number of crucial issues regarding this depression in primary care emerge which the present paper aims to review. In particular, how common is it, and how severe? How does it present and what, if any, are its special characteristics? What is the precise relationship between depressive symptoms and depressive illness presenting to the GP and what is the relationship between physical illness and depression? And finally, what is the course and outcome of depression in this setting and what are the indications for and effect of treatment?

scholarly journals A MONITORING METHOD OF COLOR DECAYING FOR COLORED PATTERNS IN ARCHITECTURAL HERITAGE

2019 ◽  
Vol XLII-2/W11 ◽  
pp. 1193-1198
Author(s):  
L. Zhang ◽  
J. Xie ◽  
L. Qin ◽  
Z. Liu ◽  
G. Liu
Keyword(s):  
Good Health ◽  
Color Difference ◽  
Health Condition ◽  
Architectural Heritage ◽  
Monitoring Method ◽  
Special Part ◽  
Color Differences ◽  
The Status ◽  
Set Up ◽  
Colored Pattern

<p><strong>Abstract.</strong> As a special part of architectural heritage, the colored pattern is not only artwork to decorate the architecture, but information reflecting specific historical era. So it has great cultural and artistic value. However, the colored pattern is one of the most sensitive types of cultural relics, which is sensitive to natural environment changes and highly vulnerable to erosion. In order to strengthen the protection of colored patterns in history architectures, it is necessary to monitor the status quo of them.</p><p>This work introduces a monitoring method of color decaying for colored patterns in architecture: set up the illuminants, adjust the illuminants, detect the color information and calculate the color difference. Based on the color difference by CIE DE2000 formula, the color decaying status of the pattern can be evaluated. The monitoring period should be at least three months.</p><p>About four years’ work has been carried out for colored patterns in the Long Corridor of the Summer Palace, and the color differences &amp;Delta;E<sub>00</sub> are about from 2 to 5, some can be over 9. In result, most colored patterns keep in good health condition. Color decaying happens every time and there are slight changes in most colored patterns. In 2nd quarter 2017, aware changes happened in nearly all the patterns. According to the color difference to evaluate the color decaying of the colored patterns, it is an efficient method to analyze the health status of colored patterns.</p>

scholarly journals CONCEPTUAL PROVISIONS ON THE DEVELOPMENT AND IMPLEMENTATION OF THE MECHANISM OF THE INSTITUTE OF TRUST FORMATION IN THE FINANCIAL SERVICES MARKET

2018 ◽  
Vol 1 (2(14)) ◽  
pp. 8-15
Author(s):  
Serhiy Mykolaiovych Shkarlet ◽  
Maksym Viktorovych Dubyna ◽  
Olena Serhiivna Zhuk
Keyword(s):  
Financial Services ◽  
State Regulation ◽  
Trust Building ◽  
Mechanism Of Formation ◽  
Target Setting ◽  
Trust Formation ◽  
New Ideas ◽  
Methodological Principles ◽  
The Relationship ◽  
Further Development

Urgency of the research. In order to develop the financial services market, reform in this area needs to be implemented and measures should be taken to increase the level of trust among the key players in such a market. Target setting. The realities of Ukrainian system of state regulation of the financial intermediaries’ activity testify that the introduction of new ideas, concepts or provisions in this area requires the construction of an effective mechanism for their implementation. It should be clearly defined in the theoretical and methodological plane with the justification of its constituents. Actual scientific research and issues analysis. The works in the field of functioning of the financial services market should include the papers of such scientists: Bobrov Ye. A., Bondarenko Ye. P., Vyshyvana B. M., Voytenko O. M., Kovalenko Yu. M., Rekunenko І. І., Smagin V. L., Unets-Khodakivska V. P., Yuriya S. I., Yashchuk V. V., Asmundson I., Herring R., Stijn C., Wyman О. Uninvestigated parts of general matters defining. Despite the developments in this area, the theoretical and methodological principles of justification of the mechanism of forming confidence in the financial services market are not developed. The research objective. The purpose of the work is to develop the provisions for the creation and implementation of a mechanism for the establishment of a trust institution in the financial services market. The statement of basic materials. The importance of developing and implementing a mechanism of trust building in the financial services market for the further development of such a market is determined. The main elements of such a mechanism, the relationship between them are described and their essence and role in the process of building such a market are determined. Within the mechanism, its purpose, principles, functions, security units, methods and tools are identified. It is indicated that the mechanism should act in order to obtain concrete results, the types of which are defined. Conclusions. The article substantiates the principles of developing and implementing the mechanism of formation of the trust institution in the financial services market.

Features of using technology of project training to increase the interest of students studying biology

2020 ◽  
Vol 44 (3) ◽  
pp. 172-181
Author(s):  
G. Baitasheva ◽  
◽  
А. Musina ◽  
A. Issayeva ◽  
Zh. Myrzabaeva ◽  
...  
Keyword(s):  
Group Work ◽  
Cell Biology ◽  
Use Of Technology ◽  
Teachers And Students ◽  
Asking Questions ◽  
The Subject ◽  
Relationship Of ◽  
The Relationship ◽  
Further Development

On the basis of the updated educational program were discussed issues of application of design technologies, in biology lessons in the section «Cell Biology» on the method of spiral training. Communication between parents, teachers and students is provided for in project technology. The point is that interest in the topic will increase by asking questions to parents. I was asked to voice my question, share my ideas through group work. The analysis of the works of these scientists is carried out and some stages of application are noted. In order to increase the interest of students studying the subject of biology, the specifics of the use of technology in project training are determined. In the field of biology are defined stages of work aimed at further development and consolidation of data on the topic «Cell Biology». The role of the teacher was shown. Highlighted the relationship of parents with children and friendship, communication in the classroom.

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