"An Overview of Using Error function in Adsorption Isotherm Modeling "

2020 ◽  
Vol 8 (1) ◽  
pp. 22-30
Author(s):  
Hawraa K. Hami ◽  
Ruba F. Abbas ◽  
Amel S. Mahdi ◽  
Asma A. Maryoosh

"Over the past years, a large number of statistical expressions used as a measure of accuracy, collectively referred to as error functions. These functions use to determine the best fitting data. Since accurate adsorption equilibrium information are necessary for the analysis and design of adsorption, error functions are used to valuation the validity of the adsorption mathematical models with experimental results by finding the most appropriate isotherm. Therefore, this overall review provides a definition of a number of common error function and explains the use of these functions in determine optimal adsorption data and chose the right isotherm.

1957 ◽  
Vol 77 (1) ◽  
pp. 54-61 ◽  
Author(s):  
Werner Jaeger

Philosophy, in general, moves in a sphere of abstraction, and its statements claim to be necessary and of universal validity. The reader therefore expects them to appeal directly to his reason, and he does not normally reflect much on the time and historical conditions that determined what the philosopher took for granted. It is only in this age of historical consciousness that we have come to appreciate these factors more readily, and the great thinkers of the past appear to us more or less closely related to the culture of their age. The writings of Plato and Aristotle in particular are for us an inexhaustible source of information about Greek society and civilisation. This is true also in regard to the relation of Greek philosophy to the science of its time, and this is of special importance for our understanding. That relation can be traced throughout Aristotle's logical, physical, and metaphysical works; but the influence of other sciences and arts is no less evident in his ethics. In this paper I propose to examine the numerous references to medicine that occur in the Nicomachean Ethics. They are mostly concerned with the question of the best method of treating this subject. The problem of the right method is always of the utmost importance for Aristotle. The discussion of it begins on the first page of the Ethics, where he tries to give a definition of the subject of this course of lectures and attributes it to a philosophical discipline that he calls ‘politics’. He does so in agreement with the Platonic tradition. We can trace it back to one of the dialogues of Plato's first period, the Gorgias, in which the Platonic Socrates for the first time pronounces his postulate of a new kind of philosophy, the object of which ought to be the care of the human soul (φυχῆς θεραπεία). He assigns this supreme task to ‘political art’, even though it does not fulfil this function at present.


Robotica ◽  
2009 ◽  
Vol 28 (2) ◽  
pp. 279-296 ◽  
Author(s):  
Alessandro Gasparetto ◽  
Vanni Zanotto

SUMMARYIn the past years a large number of new surgical devices have been developed to improve the operation outcomes and reduce the patient's trauma. Nevertheless, the dexterity and accuracy required in positioning the surgical tools are often unreachable if the surgeons are not assisted by a suitable system. Since a medical robot works in an operating room, close to the patient and the medical staff, it has to satisfy much stricter requirements with respect to an industrial one. From a kinematic point of view, the robot must reach any target position in the patient's body, being as less invasive as possible for the surgeon's workspace. In order to meet such requirements, the right robot structure has to be chosen by means of the definition of suitable kinematic performance indices.In this paper some task-based indices based on the robot workspace and stiffness are presented and discussed. The indices will be used in a multiobjective optimization problem to evaluate best robot kinematic structure for a given neurosurgical task.


2020 ◽  

The ancient world is a paradigm for the memory scholar. Without an awareness that collective memories are not only different from individual memories (or even the sum thereof) but also highly constructed, ancient research will be fundamentally flawed. Many networks of memories are beautifully represented in the written and material remains of antiquity, and it is precisely the ways in which they are fashioned, distorted, preserved or erased through which we can learn about the historical process as such. Our evidence is deeply characterized by the fact that ancient ‘identity’ and ‘memory’ appear exceptionally strong. Responsible for this is a continuing desire to link the present to the remote past, which creates many contexts in which memories were constructed. The ancient historian therefore has the right tools with which to work: places and objects from the past, monuments and iconography, and textual narratives with a primary purpose to memorize and commemorate. This is paired with our desire to understand the ancient world through its own self-perception. With the opportunity of tapping into this world by way of oral history, personal testimonies are a desideratum in all respects. Memory of the past, however, is profoundly about ‘self-understanding’. This volume surveys and builds on the many insights we have gained from vibrant research in the field since Maurice Halbwachs’ and Jan Assmann’s seminal studies on the idea and definition of ‘cultural memory’. While focusing on specific themes all chapters address the concepts and expressions of memory, and their historical impact and utilization by groups and individuals at specific times and for specific reasons.


Author(s):  
Yofi Tirosh

Abstract Balancing between sex equality and religious interests has been a challenge for Israel’s constitutional law from the state’s inception. In recent years, however, the expanding repertoire of practices known as women’s exclusion has brought forth this tension with new formulations, intensity, and public sensitivity. This article maps the three decades of Israel’s High Court of Justice (HCJ or “the Court”) adjudication on women’s exclusion. The modesty requirements and sex-based physical segregation that have become rampant in Israel require re-articulations of the scope and status of the right to equality, as well as other constitutional rights such as dignity and liberty. The thirty-year database compiled for the purpose of this article encompasses all women’s exclusion cases decided by the HCJ. The database was built based on an annotated definition of women’s exclusion cases as a legal field, developed and explained in this article. The database reveals what might be defined as diminishing constitutional adjudication. In the 1990s, the Court labored in elevating sex equality, developing a doctrinal structure that guards it against religion-based demands to legitimize exclusion norms. In contrast, in the past decade, the Court has almost completely refrained from reviewing cases on merit or writing reasoned opinions, adopting ad-hoc problem-solving approaches or taking dispute resolution approaches prompting the parties to find compromise, without delineating the legal framework that should guide the disputes.


2010 ◽  
Vol 5 (1) ◽  
Author(s):  
Ala Alahmad

To be ethical or not to be that is the question? Leadership is about setting the right example and making a difference in people's lives. You do not have to do great things to make a difference (Ayres, 2004). Honesty, tell the truth no matter what, respect, punctuality, not judgmental, just, humble, and dignity can be international code of ethics every leader should follow. Much has changed in our world in the past several decades including people’s beliefs of what is right and wrong. Have their ethics changed as well? This paper introduces an international code of ethics that can guide all different international leadership styles. What is the definition of Ethical Leadership? How can we introduce an international code of ethics for leadership? Finally, leadership is all about example. While an extensive review of literature was not conducted, this researcher was unable to identify an international code of ethics for leadership. Consequently, it is the opinion of this researcher that the following leader characteristics may apply beyond international and cultural boundaries in most instances— honesty, tell the truth no matter what, respect, punctuality, not judgmental, just, humble, and dignity.


Onomastica ◽  
2021 ◽  
Vol 65 (1) ◽  
pp. 39-66
Author(s):  
Iveta Valentová

Exonyms are an integral part of every language, history and material and spiritual culture of individual nations. Slovak, like any other language, has the right to adapt foreign names to its needs. There is no doubt about the social importance and significance of the standardization of geographical names, including exonyms, also for communication and exact identification of the object. When standardizing exonyms as well as other kinds of toponyms, it is necessary to take into account not only the language system and the literary language, but also the forms used in various spheres of communication. Social and political factories of international character have a much greater influence on the standardization of exonyms, in comparison to other kinds of toponyms. The paper deals with the definition of the term exonym and the suitability of the Slovak domestic term “vžitý názov” (conventional name), given that some exonyms are not characterized by the sign of ‘conventionality’, i. e. the standardized form is no longer used, or the form that is not used in communication is standardized. The author briefly characterizes the basic types of Slovak exonyms and some of their orthographic problems, which were solved in the past, the principles of standardization of exonyms and recommendations in connection with the use of exonyms and endonyms. The next part of the paper is devoted to some current issues related to the standardization of some exonyms, such as the standardization of the abbreviated Slovak names of the state “Spojené kráľovstvo, Veľká Británia” (United Kingdom, Great Britain), the standardization of two Slovak exonyms for one object or previously standardized forms of Slovak exonyms for some names of municipalities in Hungary with a Slovak national minority, which are not used today among Slovaks in Hungary. A long-term problem is incorrectly formed and used exonyms of Slovak geographical objects in translations of Slovak texts into foreign languages.


Author(s):  
K. T. Tokuyasu

During the past investigations of immunoferritin localization of intracellular antigens in ultrathin frozen sections, we found that the degree of negative staining required to delineate u1trastructural details was often too dense for the recognition of ferritin particles. The quality of positive staining of ultrathin frozen sections, on the other hand, has generally been far inferior to that attainable in conventional plastic embedded sections, particularly in the definition of membranes. As we discussed before, a main cause of this difficulty seemed to be the vulnerability of frozen sections to the damaging effects of air-water surface tension at the time of drying of the sections.Indeed, we found that the quality of positive staining is greatly improved when positively stained frozen sections are protected against the effects of surface tension by embedding them in thin layers of mechanically stable materials at the time of drying (unpublished).


Derrida Today ◽  
2013 ◽  
Vol 6 (1) ◽  
pp. 97-114 ◽  
Author(s):  
Christopher Morris

Over the past thirty years, academic debate over pornography in the discourses of feminism and cultural studies has foundered on questions of the performative and of the word's definition. In the polylogue of Droit de regards, pornography is defined as la mise en vente that is taking place in the act of exegesis in progress. (Wills's idiomatic English translation includes an ‘it’ that is absent in the French original). The definition in Droit de regards alludes to the word's etymology (writing by or about prostitutes) but leaves the referent of the ‘sale’ suspended. Pornography as la mise en vente boldly restates the necessary iterability of the sign and anticipates two of Derrida's late arguments: that there is no ‘the’ body and that performatives may be powerless. Deriving a definition of pornography from a truncated etymology exemplifies the prosthesis of origin and challenges other critical discourses to explain how pornography can be understood as anything more than ‘putting (it) up for sale’.


Author(s):  
Volker Scheid

This chapter explores the articulations that have emerged over the last half century between various types of holism, Chinese medicine and systems biology. Given the discipline’s historical attachments to a definition of ‘medicine’ that rather narrowly refers to biomedicine as developed in Europe and the US from the eighteenth century onwards, the medical humanities are not the most obvious starting point for such an inquiry. At the same time, they do offer one advantage over neighbouring disciplines like medical history, anthropology or science and technology studies for someone like myself, a clinician as well as a historian and anthropologist: their strong commitment to the objective of facilitating better medical practice. This promise furthermore links to the wider project of critique, which, in Max Horkheimer’s definition of the term, aims at change and emancipation in order ‘to liberate human beings from the circumstances that enslave them’. If we take the critical medical humanities as explicitly affirming this shared objective and responsibility, extending the discipline’s traditional gaze is not a burden but becomes, in fact, an obligation.


2020 ◽  
Vol 10 (4) ◽  
pp. 85-90
Author(s):  
VLADIMIR TROYAN ◽  

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.


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