scholarly journals Retinal Changes Induced by Epiretinal Tangential Forces

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Mario R. Romano ◽  
Chiara Comune ◽  
Mariantonia Ferrara ◽  
Gilda Cennamo ◽  
Stefano De Cillà ◽  
...  
Keyword(s):  
Posterior Vitreous Detachment ◽  
Retinal Surface ◽  
Epiretinal Membranes ◽  
Vitreoretinal Traction ◽  
Tangential Forces ◽  
Vitreopapillary Adhesion ◽  
Definition Of ◽  
The Right ◽  
Anterior Posterior ◽  
Anomalous Posterior Vitreous Detachment

Two kinds of forces are active in vitreoretinal traction diseases: tangential and anterior-posterior forces. However, tangential forces are less characterized and classified in literature compared to the anterior-posterior ones. Tangential epiretinal forces are mainly due to anomalous posterior vitreous detachment (PVD), vitreoschisis, vitreopapillary adhesion (VPA), and epiretinal membranes (ERMs). Anomalous PVD plays a key role in the formation of the tangential vectorial forces on the retinal surface as consequence of gel liquefaction (synchysis) without sufficient and fast vitreous dehiscence at the vitreoretinal interface. The anomalous and persistent adherence of the posterior hyaloid to the retina can lead to vitreomacular/vitreopapillary adhesion or to a formation of avascular fibrocellular tissue (ERM) resulting from the proliferation and transdifferentiation of hyalocytes resident in the cortical vitreous remnants after vitreoschisis. The right interpretation of the forces involved in the epiretinal tangential tractions helps in a better definition of diagnosis, progression, prognosis, and surgical outcomes of vitreomacular interfaces.

scholarly journals Posterior vitreous detachment and paravascular retinoschisis in highly myopic young patients detected by ultra-widefield OCT

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hiroyuki Takahashi ◽  
Noriko Nakao ◽  
Kosei Shinohara ◽  
Keigo Sugisawa ◽  
Kengo Uramoto ◽  
...  
Keyword(s):  
Posterior Vitreous Detachment ◽  
Young Patients ◽  
Early Age ◽  
Macular Area ◽  
Retinal Surface ◽  
Image Field ◽  
Vitreous Detachment ◽  
Vitreoretinal Traction ◽  
The Relationship

AbstractThe purpose of this study was to determine the relationship between a posterior vitreous detachment (PVD) and retinoschisis (RS) in 73 highly myopic (HM) young patients age 16.4 ± 6.9 years and 24 non-HM children age 8.4 ± 1.5 years. The presence of the paravascular retinal abnormalities was determined in the images obtained by a ultra-widefield OCT (UWF OCT) instrument with an image field of 23 × 20 mm. The results showed that a partial PVD was detected in 15 (21%) of the HM patients, and the number increased significantly with increasing age (P = 0.02). PVDs of any type were not found in the non-HM eyes. The number of microvascular folds also increased with age in the HM patients (P = 0.03). Medium-reflective columnar tissues were present between the detached vitreous and inner retinal surface in 4 (5%) eyes of the HM patients. Myopic RS was found in 3 (4%) HM patients in the paravascular area but not in the macular area. These results suggest that early partial PVD may play a role in pathological and proliferative vitreous changes of HM eyes. An intense vitreoretinal traction with bridging tissues may cause the various paravascular retinal abnormalities. In HM eyes, paravascular RS is already present at an early age which may progress to macular RS with aging.

Posterior Vitreous Detachment and Paravascular Retinoschisis in Highly Myopic Young Patients Detected by Ultra-Widefield OCT

2021 ◽  
Author(s):  
Hiroyuki Takahashi ◽  
Noriko Nakao ◽  
Kosei Shinohara ◽  
Keigo Sugisawa ◽  
Kengo Uramoto ◽  
...  
Keyword(s):  
Posterior Vitreous Detachment ◽  
Young Patients ◽  
Early Age ◽  
Macular Area ◽  
Retinal Surface ◽  
Image Field ◽  
Vitreous Detachment ◽  
Vitreoretinal Traction ◽  
The Relationship

Abstract The purpose of this study was to determine the relationship between a posterior vitreous detachment (PVD) and retinoschisis (RS) in 73 highly myopic (HM) young patients and 24 non-HM children. The presence of the paravascular retinal abnormalities was determined in the images obtained by a ultra-widefield OCT (UWF OCT) instrument with an image field of 23 x 20 mm. The results showed that a partial PVD was detected in 15 (21%) of the HM patients, and the number increased significantly with increasing age (P=0.02). PVDs of any type were not found in the non-HM eyes. The number of microvascular folds also increased with age in the HM patients (P=0.03). Medium-reflective columnar tissues were present between the detached vitreous and inner retinal surface in 4 (5%) eyes of the HM patients. Myopic RS was found in 3 (4%) HM patients in the paravascular area but not in the macular area. These results suggest that early partial PVD may play a role in pathological and proliferative vitreous changes of HM eyes. An intense vitreoretinal traction with bridging tissues may cause the various paravascular retinal abnormalities. In HM eyes, paravascular RS is already present at an early age which may progress to macular RS with aging.

THE CONCEPT OF CONSTITUTIONAL AND LEGAL GUARANTEES OF ELECTORAL RIGHTS

2020 ◽  
Vol 10 (4) ◽  
pp. 85-90
Author(s):  
VLADIMIR TROYAN ◽  
Keyword(s):  
Scientific Research ◽  
Formal Aspect ◽  
Universal Approach ◽  
Right To Vote ◽  
Definition Of ◽  
The Right

The relevance of the interpretation of constitutional and legal guarantees of the right to vote is mediated by isolated scientific research in this area, as well as the lack of a universal approach to legal guarantees. In this regard, the purpose of the article is to argue and disclose the author’s definitive aspect of the claimed guarantees. In the work, the author named and characterized the normative (based exclusively on legal means) with the perspective of a branch of legal and technical; regulatory and institutional (combines the formal aspect with the activities of authorized entities) and associated legal (including a set of legal and other aspects) approaches to the definition of legal guarantees. Based on the second approach, as well as combining the guarantees of the right to vote directly guarantees of the subjective right itself and guarantees of its implementation, the author offers a definition of constitutional and legal guarantees of the right to vote.

administrasi ketatausahaan sekolah

2020 ◽  
Author(s):  
Isra Revenia
Keyword(s):  
Information Needs ◽  
Control Functions ◽  
Definition Of ◽  
The Right ◽  
And Control

This article is made to know the destinantion and the administrasi functions of the school in order to assist the leader of an organazation in making decisions and doing the right thing, recording of such statements in addition to the information needs also pertains to the function of accountabilitty and control functions. Administrative administration is the activity of recording for everything that happens in the organization to be used as information for leaders. While the definition of administration is all processing activities that start from collecting (receiving), recording, processing, duplicating, minimizing and storing all the information of correspondence needed by the organization. Administration is as an activity to determine everything that happens in the organization, to be used as material for information by the leadership, which includes all activities ranging from manufacturing, managing, structuring to all the preparation of information needed by the organization.

SELF ASSESSMENT TO KNOW UNDERSTANDING MATHEMATIC CONCEPT

2018 ◽  
Vol 3 (1) ◽  
pp. 14-21
Author(s):  
Deni Iriyadi
Keyword(s):  
Qualitative Study ◽  
Qualitative Analysis ◽  
Resolution Limit ◽  
Self Assessment ◽  
Limit Concept ◽  
Research Instrument ◽  
Definition Of ◽  
The Right

This research is a qualitative study aimed to determine the students' understanding of the concept of matter limit. The subjects were students of class XI IPA 1 SMA Negeri 1 Watampone. The concept includes the definition of the limit. Data obtained using a research instrument in the form of self-assessment and then proceed with the interview subjects were selected based on the results of self-assessment has been done before. Analysis using qualitative analysis of students' understanding of the concept of the limit concept. The results of this study indicate that students' understanding of concepts some of which are not / do not understand especially regarding definitions limit. In addition students are also wrong about the resolution limit. Students who understand the concept of limit dinyakatakan them restate concepts, including examples and classify the sample to non-completion of function and limit the right results.

DIRECTIONS FOR PROVISION OF PUBLIC BODIES’ TRANSPARENCY AND ACCOUNTABILITY IN CONDITIONS OF PARTICIPATORY DEMOCRACY DEVELOPMENT

2018 ◽  
Vol 1 (11) ◽  
pp. 144-154
Author(s):  
Olga Mykhailоvna Ivanitskaya
Keyword(s):  
Public Administration ◽  
Participatory Democracy ◽  
Main Task ◽  
The Public ◽  
State Governance ◽  
Legislative Initiative ◽  
The Government ◽  
Definition Of ◽  
The Right ◽  
Transparency And Accountability

The article is devoted to issues of ensuring transparency and ac- countability of authorities in the conditions of participatory democracy (democ- racy of participation). It is argued that the public should be guaranteed not only the right for access to information but also the prerequisites for expanding its par- ticipation in state governance. These prerequisites include: the adoption of clearly measurable macroeconomic and social goals and the provision of control of the processes of their compliance with the government by citizens of the country; ex- tension of the circle of subjects of legislative initiative due to realization of such rights by citizens and their groups; legislative definition of the forms of citizens’ participation in making publicly significant decisions, design of relevant orders and procedures, in particular participation in local referendum; outlining methods and procedures for taking into account social thought when making socially im- portant decisions. The need to disclose information about resources that are used by authorities to realize the goals is proved as well as key performance indicators that can be monitored by every citizen; the efforts made by governments of coun- tries to achieve these goals. It was noted that transparency in the conditions of representative democracy in its worst forms in a society where ignorance of the thought of society and its individual members is ignored does not in fact fulfill its main task — to establish an effective dialogue between the authorities and so- ciety. There is a distortion of the essence of transparency: instead of being heard, society is being asked to be informed — and passively accept the facts presented as due. In fact, transparency and accountability in this case are not instruments for the achievement of democracy in public administration, but by the form of a tacit agreement between the subjects of power and people, where the latter passes the participation of an “informed observer”.

scholarly journals Lying, speech acts, and commitment

Synthese ◽  
2020 ◽  
Author(s):  
Neri Marsili
Keyword(s):  
Speech Acts ◽  
Speech Act ◽  
Good Definition ◽  
Definition Of ◽  
The Right ◽  
Adequate Analysis

AbstractNot every speech act can be a lie. A good definition of lying should be able to draw the right distinctions between speech acts (like promises, assertions, and oaths) that can be lies and speech acts (like commands, suggestions, or assumptions) that under no circumstances are lies. This paper shows that no extant account of lying is able to draw the required distinctions. It argues that a definition of lying based on the notion of ‘assertoric commitment’ can succeed where other accounts have failed. Assertoric commitment is analysed in terms of two normative components: ‘accountability’ and ‘discursive responsibility’. The resulting definition of lying draws all the desired distinctions, providing an intensionally adequate analysis of the concept of lying.

scholarly journals Learning Curves: A Novel Approach for Robustness Improvement of Load Forecasting

2021 ◽  
Vol 5 (1) ◽  
pp. 38
Author(s):  
Chiara Giola ◽  
Piero Danti ◽  
Sandro Magnani
Keyword(s):  
Load Forecasting ◽  
Learning Curves ◽  
Machine Learning Techniques ◽  
Essential Information ◽  
Set Size ◽  
Novel Approach ◽  
Learning Techniques ◽  
Energy Plant ◽  
Definition Of ◽  
The Right

In the age of AI, companies strive to extract benefits from data. In the first steps of data analysis, an arduous dilemma scientists have to cope with is the definition of the ’right’ quantity of data needed for a certain task. In particular, when dealing with energy management, one of the most thriving application of AI is the consumption’s optimization of energy plant generators. When designing a strategy to improve the generators’ schedule, a piece of essential information is the future energy load requested by the plant. This topic, in the literature it is referred to as load forecasting, has lately gained great popularity; in this paper authors underline the problem of estimating the correct size of data to train prediction algorithms and propose a suitable methodology. The main characters of this methodology are the Learning Curves, a powerful tool to track algorithms performance whilst data training-set size varies. At first, a brief review of the state of the art and a shallow analysis of eligible machine learning techniques are offered. Furthermore, the hypothesis and constraints of the work are explained, presenting the dataset and the goal of the analysis. Finally, the methodology is elucidated and the results are discussed.

Collaborative design in public services: a wicked problem-reframing case

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Patrícia Moura e Sá ◽  
Catarina Frade ◽  
Fernanda Jesus ◽  
Mónica Lopes ◽  
Teresa Maneca Lima ◽  
...  
Keyword(s):  
Collaborative Design ◽  
Success Factors ◽  
Central Government ◽  
Wicked Problem ◽  
Low Density ◽  
Structured Interviews ◽  
Content Type ◽  
Critical Success ◽  
Definition Of ◽  
The Right

PurposeWicked problems require collaborative innovation approaches. Understanding the problem from the users' perspective is essential. Based on a complex and ill-defined case, the purpose of the current paper is to identify some critical success factors in defining the “right problem” to be addressed.Design/methodology/approachAn empirical research study was carried out in a low-density municipality (case study). Extensive data were collected from official databases, individual semi-structured interviews and a focus group involving citizens, local authorities, civil servants and other relevant stakeholders.FindingsAs defined by the central government, the problem to be addressed by the research team was to identify which justice services should be made available locally to a small- and low-density community. The problem was initially formulated using top-down reasoning. In-depth contact with citizens and key local players revealed that the lack of justice services was not “the issue” for that community. Mobility constraints and the shortage of economic opportunities had a considerable impact on the lack of demand for justice services. By using a bottom-up perspective, it was possible to reframe the problem to be addressed and suggest a new concept to be tested at later stages.Social implicationsThe approach followed called attention to the importance of listening to citizens and local organisations with a profound knowledge of the territory to effectively identify and circumscribe a local problem in the justice field.Originality/valueThe paper highlights the limitations of traditional rational problem-solving approaches and contributes to expanding the voice-of-the-customer principle showing how it can lead to a substantially new definition of the problem to be addressed.

Recht und Pflicht – Einschränkungen von Freiheit?

2021 ◽  
Vol 69 (1) ◽  
pp. 98-113
Author(s):  
Klaus Vieweg
Keyword(s):  
Free Will ◽  
The State ◽  
Individual Rights ◽  
Right To Life ◽  
Emergency Situations ◽  
The Will ◽  
Definition Of ◽  
The Right

Abstract Can one speak philosophically of a justified limitation of freedom? Hegel’s logically founded definition of free will and his understanding of right and duty can contribute to a clarification of the concept of freedom. Important is a precise differentiation between freedom and caprice (Willkür) – the latter being a necessary but one-sided element of the free will. In caprice, the will is not yet in the form of reason. Rational rights and duties are not a restriction of freedom. Insofar as individual rights can collide (e. g. in emergency situations), there can be a temporary and proportionate restriction of certain rights in favour of higher rights, such as the right to life. Dictatorships are instances of capricious rule which restrict freedom; the rationally designed state, by contrast, restricts only caprice. What is tobe defined are the duties and the rights of the state and the duties and the rights of the citizens.

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