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Showing 5 results for Kaffash


Volume 9, Issue 3 (Summer 2021)
Abstract

Aims: The world hospital systems are presently facing many unprecedented challenges from COVID‐19 disease. Prediction the deteriorating or critical cases can help triage patients and assist in effective medical resource allocation. This study aimed to develop and validate a prediction model based on Machine Learning algorithms to predict hospitalized COVID-19 patients for transfer to ICU based on clinical parameters.
Materials & Methods: This retrospective, single-center study was conducted based on cumulative data of COVID-19 patients (N=1225) who were admitted from March 9, 2020, to December 20, 2020, to Mostafa Khomeini Hospital, affiliated to Ilam University of Medical Sciences (ILUMS), focal point center for COVID-19 care and treatment in Ilam, West of Iran. 13 ML techniques from six different groups applied to predict ICU admission. To evaluate the performances of models, the metrics derived from the confusion matrix were calculated. The algorithms were implemented using WEKA 3.8 software.
Findings: This retrospective study's median age was 50.9 years, and 664 (54.2%) were male. The experimental results indicate that Meta algorithms have the best performance in ICU admission risk prediction with an accuracy of 90.37%, a sensitivity of 90.35%, precision of 88.25%, F-measure of 88.35%, and ROC of 91%.
Conclusion: Machine Learning algorithms are helpful predictive tools for real-time and accurate ICU risk prediction in patients with COVID-19 at hospital admission. This model enables and potentially facilitates more responsive health systems that are beneficial to high-risk COVID-19 patients.


Volume 11, Issue 6 (No. 6 (Tome 60), (Articles in Persian) 2020)
Abstract

The personal credibility and authority of the historian are one of the major subjects in Historiography. It's important since the greater the personal credit of historians, the greater would be the degree of persuasion of the audience. In this article, we analyze the degree of historian influence on audience persuasion and rhetorical methods and verbal devices used for historiography credit which makes the text more believable to the audience. In this article, applying the Neo- Aristotelian criticism method, we want to demonstrate the historian Ethos and strategies used by him to increase his credit. For this purpose, we choose Futuḥāt-i shāhī Cornicle by Amīnī Haravī, since it was one of the first and impressive histories of Safavi's government formation and its ideology because the role and personal credibility of historian and his persuasive of methods are very important.
 
 1. Introduction
the  historian personality is one of the main factors in the validity of historical narrative. The character of the historian is a rhetorical function here. Because in addition to validation of historical narrative, it is accompanied by the persuasion of audience. Historians, consciously in history, have sought to validate their historical events. They used objective eyewitnesses, predecessors, contemporaries, and so on. However, it should not be mentioned that the most important and fundamental factor in historical authenticity is the character of the historian. From this view point, historical authenticity is closely linked to the historian's authority and credibility. The historian's credit for the historian is that what method would the historian produce the right documents? Thus, the degree of content of the historian's discourse increases in the presentation of historical evidence. The authors seek to show how the historian achieves this personal credit in his historical context.
 
2. Methodology
Among rhetorical criticism, neo - Aristotle criticism has long term history. This approach, although criticized and reviewed, continues to be one of the most important approaches to its life. First, in 1391, Herbert Wichelns propounded the main tools of neo - Aristotle criticism as "  The Literary Criticism of Oratory " in his article. He made a distinction between literary criticism and rhetorical criticism there. Aristotle had already begun to write in the On Rhetoric and other like Cicero and Quintilian. These elements were the speaker’s personality, the public character of the speaker or the public’s perception of the speaker, the major ideas presented in the speech, the motives to which the speaker appealed, the nature of the speaker’s proofs, the speaker’s judgment of human nature in the audience, the arrangement of the speech, the speaker’s mode of expression, the speaker's method of speech preparation, the manner of delivery, and the effect of discourse on the immediate audience and its long-term effects (Foss, 2009, P. 22).
Since he did not deal with the analysis of these subjects, literary critics applied to the sources of classical rhetoric and benefited from the underpinnings of the rhetoric that Aristotle discussed in On Rhetoric, literary critics turned to classical rhetoric and took advantage of the rhetoric pillars that Aristotle had discussed in oratory: innovation, arrangement, style, memory and delivery (ibid, p. 22). Therefore, the application of the three elements of Aristotle s artificial arguments for review and critique of literary texts was first proposed in the neo - Aristotle criticism approach.
In this paper, the authors mention the difference between Aristotle and Cicero Ethos. This difference is, first, that one of the characteristics of the orator was based on common sense. This feature is necessary for the rational type because if a speaker wishes to express the truth, he must be wise enough about what he is talking about. The second is the difference between the client and the plaintiff which has very little relation with Aristotle's rational Ethos. This concept entails two categories: content and influence. It is, therefore, a good representation of the character of an orator and the principal (content ), for the audience . In other words, this study aimed to investigate the relationship between self - efficacy and Pathos. The difference between Cicero’s Ethos and Pathos is that he has some kind of gentleness with him, but it is equal to arousing strong feelings. While Aristotle's Ethos is a logical concept and does not have a goal in arousing emotions, and unlike Aristotle, it includes all types of feelings.
According to the above explanation, in this paper, the authors have put the Aristotelian Ethos for text analysis. For Aristotelian ethos, in addition to being text, Aristotelian Ethos is more logical than Ciceronian one. On the other hand, because in the new - Aristotelian approach, Aristotle's theory has been used. It is necessary to mention that the authors have mentioned the above explanations to understand the addressee about Aristotle and his critique of neo - Aristotle and have extracted the text analysis unique to Aristotle's theory and those cases which have been used to obtain the authenticity of the historian.
3. Conclusion
In the tradition of historiography, some of the essential elements are common and are not special to Futuḥāt-i shāhī, such as the fame of the historian and writing and composition. But some of these elements, especially those of Futuḥāt-i shāhī  which belong to the historiography of Safavid era, are the means of distinguishing it with pre - Safavid historiography.Using the current discourses of their time Amīnī Haravī seeks to link past discourses with the new discourse of Safavid establishment in the direction of legitimacy.
It should be divided into two categories: general elements and discursive elements. Those elements which serve to strengthen and promote the values of Safavid's political and ideological system will be credited to the historian and his work. However,  for audiences outside the discourse or the rival discourses can reduce the authenticity of the text and reduce it to a sectarian text. In this paper, we used the rhetorical criticism techniques to investigate the functions of the ethos for the historian in the whole text of the Futuḥāt-i shāhī and showed how intratextual and extratextual elements could add to the historian's credit.
 


Volume 12, Issue 2 (Number 2 - 2010)
Abstract

Eighteen wheat breeding lines were evaluated along with two check cultivars across nine locations of temperate zone of Iran during two crop seasons (2003-2004 and 2004-2005). Field records were taken for some important traits especially grain yield. Combined ANOVA for nine locations in the first season and for seven locations in both seasons was undertaken. In each case, additive main effects and multiplicative interaction analysis (AMMI) was employed and the biplot of the Interaction Principal Components (IPC) were evaluated for stability and adaptation relationships among genotypes and locations. IPC1, IPC2 and IPC3 accumulatively defining 78.4% of genotype×environment (G×E) interaction variation were found out as significant in the first crop season. Biplot of first two IPCs identified at least two sub-regions among the locations. Some genotypes (M-82-7 and M-82-17) showed specific adaptation toward one of the drought-prone sub-regions. For the combined data of both seasons, only IPC1 was significant defining 41.5% of G×E interaction variation. Thus, plot of IPC1 along with grain yield means were employed for an interpretation of adaptation relationships. Entries M-82-8, M-82-9, M-82-11 and M-82-15 showed specific adaptation to Mashhad station which was interactive and particular in behavior. The results indicated that AMMI is an informative method of stability and adaptation analysis to be employed in practical plant breeding and subsequent variety recommendations.
A.a. Kharestani, S.a. Mousavi, M. Kaffash Mirzarahimi, S. Mahjoub Moghadas,
Volume 19, Issue 11 (November 2019)
Abstract

Beams are the basic geometries in engineering and many engineering issues are simplified as a beam problem. In this paper, the dynamics and vibration analysis of composite Timoshenko beam made of epoxy graphite layers with two piezoelectric layers on both sides have been investigated. Extraction of motion equations has been conducted based on the first-order shear deformation beam theory using the Hamilton principle. The partial differential equations were converted to the first-order coupled differential equations and then they were solved by fourth-order Runge–Kutta method. The effect of piezoelectric parameters on the vibrational and dynamic response of the beam has been investigated. The results show that the natural frequency of the beam decreases with increasing the length of the neam. Among piezoelectric parameters, the parameter of C11 has a lower effect than the effective transverse coefficient of e31 in the frequency response. As the ratio of the length of the beam is lower than the thickness, the effect of C11 will be greater on the natural frequency. The effect of the other piezoelectric parameters in the frequency response has also been evaluated very small relative to these two parameters.


Volume 21, Issue 2 (9-2017)
Abstract

Nowadays the effect of cultural industries on GDP, economic growth, social welfare and development of international exchanges is very significant. Therefore cultural activities are to become one of the most fundamental principles of the world economic system. Accordingly, due to the richness and wealth of Iran in terms of cultural products, it is necessary to look at this matter in a different manner and to identify factors which affect the demand for this type of product in order to systematically improving structure of supply and the economy of culture. This study aimed to carry out the composition and classification of factors which affect the demand for products of Iranian culture in domestic market. A qualitative study based on grounded theory, using interviews of 30 artists, scholars and cultural activists with snowball sampling method were conducted. Data analysis were done according to the developed grounded process model. Then, 182 concepts in 4 aspects of: "Stimulating the demand", "creating the demand", "supplying of the demand" and "repeating the demand" were modeled. The reliability of coding was verified with retest reliabilty percentage of 1.52.

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