494 research outputs found
The Relationship between Family Social Capital and Prosocial Behaviors (Case Study: Yazd University Students) Seyed Reza Javadian Fatemeh Zeydabadi Nezhad
No full textThe Relationship between Family Social Capital and Prosocial Behaviors (Case Study: Yazd University Students) Seyed Reza Javadian[1] , Fatemeh Zeydabadi Nezhad[2] Received: 29/9/2017 Accepted: 2/10/2018 Abstract The purpose of this study was to see the relationship between family social capital and prosocial behaviors in students, because family members play an important role in the re-production and re-distribution of social capital and in strengthening the prosocial behaviors and the sense of altruism in children. The statistical population was all students at Yazd University in 2014-2015. The sample (372 students) was selected through random convenience sampling. Data was collected through Prosocial Tendencies Measure Revised and social capital questionnaire which was developed by the researcher. Data was analyzed by Pearson correlation coefficient, T test and regression. The results showed that students' prosocial behaviors was more than average (M=78.4). The Pearson correlation coefficients of social capital dimensions (intimacy, monitoring, social participation, social norm, effectiveness, environmental trust, institutional trust) and students' prosocial behaviors, are statistically significant. Results also indicate that social norm, environmental trust, social participation, institutional trust and monitoring can explain up to 17 percent of the dependent variable. Keywords: Prosocial Behavior, Altruism, Social Capital, Family, Student [1]. Assistant Professor in Social Work, Social Sciences Department, YazdUniversity, Yazd, Iran. (Corresponding Author). [email protected] [2]. M.A. in Sociology, Yazd University, Yazd, Iran. [email protected]
Melanargia grumi lorestanensis n. ssp. dans le sud-ouest de l'Iran (Lep., Nymphalidae)
No full textMelanargia grumi lorestanensis n. ssp. in S-W Iran (Lep., Nymphalidae). The new entity was discovered by the first author mid june 2000 in the mountain range of the western part of Lorestan. It is distinguished from the nominotypical ssp., on the upper side by a darker pattern, on the hind wings by a larger white postdiscal band and by its quite immaculate underside. This is the first record of M. grumi for Iran.Carbonell Frédéric, Naderi Ali-Reza. Melanargia grumi lorestanensis n. ssp. dans le sud-ouest de l'Iran (Lep., Nymphalidae). In: Bulletin de la Société entomologique de France, volume 112 (4), décembre 2007. p. 454
Melanargia grumi lorestanensis n. ssp. dans le sud-ouest de l'Iran (Lep., Nymphalidae)
No full textMelanargia grumi lorestanensis n. ssp. in S-W Iran (Lep., Nymphalidae). The new entity was discovered by the first author mid june 2000 in the mountain range of the western part of Lorestan. It is distinguished from the nominotypical ssp., on the upper side by a darker pattern, on the hind wings by a larger white postdiscal band and by its quite immaculate underside. This is the first record of M. grumi for Iran.Carbonell Frédéric, Naderi Ali-Reza. Melanargia grumi lorestanensis n. ssp. dans le sud-ouest de l'Iran (Lep., Nymphalidae). In: Bulletin de la Société entomologique de France, volume 112 (4), décembre 2007. p. 454
Author Correction: Prediction of Response to Neoadjuvant Chemoradiotherapy by MRI-Based Machine Learning Texture Analysis in Rectal Cancer Patients (Journal of Gastrointestinal Cancer, (2020), 51, 2, (601-609), 10.1007/s12029-019-00291-0)
No full textThe original version of this article unfortunately contained a mistake. In the author group section, the correct name of the fourth author is �Reza Ghalehtaki.� The authors apologize for this oversight and for any confusion it may have caused. © 2019, Springer Science+Business Media, LLC, part of Springer Nature
Clinicopathological Characteristics of Gastric Cancer in Iranian Patients Referred to Imam Reza Hospital During 2008 to 2017
No full textBackground and Aim: There are a limited number of studies regarding the clinicopathological features of gastric cancer. Here, the clinicopathological features of gastric cancer including tumor type and size, degree of differentiation, tumor operability, and immunohistochemically results of E-cadherin and P53 expression was investigated in Iranian patients.
Methods: This retrospective study was performed on patients who were admitted at Imam Reza Hospital in Tehran-Iran from 2008 to 2017 with a diagnosis of gastric cancer. Required information including age, sex, type of cancer, pathology, and immunohistochemistry (IHC) results and treatment were extracted from the hospital archive.
Results: Out of 264 enrolled patients (with the mean age of 70.03±14.01 years), 180 cases were men. The frequency of intestinal-type, Diffuse-type, lymphoma and GIST tumor were 54.5%, 27.7%, 12.25% and 5.92% respectively. In addition, 67.58% and 13.83% of the tumors were undifferentiated and poorly differentiated respectively.
Surgery was less probable in less differentiated tumors (r=0.582 P=0.001). The surgery rate in GIST, intestinal-type, and Diffuse-type tumors were 100%, 57%, and 14.4%, respectively. IHC results showed that E-cadherin expression was present in 78.6, of which 50.9% were weakly positive (+1). Also, the high expression of P53 was observed in 60.7% of patients.
Conclusion: According to the data, we can conclude that poorly differentiated tumors, decreased expression of E-cadherin, and increased expression of P53 is linked to poor prognosis in Iranian patients with gastric cancer. In this regard, further clinical trials and multicenter studies should be done to evaluate the possible factors for improving the prognosis and survival rates of Iranian patients with gastric cancer.
*Corresponding Author: Shahrokh Iravani; Email: [email protected]
Please cite this article as: Sattartabar B, Nourian M, Samizadeh E, Mehrvar N, Jalaeikhoo H, Mehrvar A, Iravani S. Clinicopathological Characteristics of Gastric Cancer in Iranian Patients Referred to Imam Reza Hospital During 2008 to 2017. Arch Med Lab Sci. 2020;6:1-6 (e18). https://doi.org/10.22037/amls.v6.3330
LCDB 1.0: An Extensive Learning Curves Database for Classification Tasks
No full textThe use of learning curves for decision making in supervised machine learning is standard practice, yet understanding of their behavior is rather limited. To facilitate a deepening of our knowledge, we introduce the Learning Curve Database (LCDB), which contains empirical learning curves of 20 classification algorithms on 246 datasets. One of the LCDB’s unique strength is that it contains all (probabilistic) predictions, which allows for building learning curves of arbitrary metrics. Moreover, it unifies the properties of similar high quality databases in that it (i) defines clean splits between training, validation, and test data, (ii) provides training times, and (iii) provides an API for convenient access (pip install lcdb). We demonstrate the utility of LCDB by analyzing some learning curve phenomena, such as convexity, monotonicity, peaking, and curve shapes. Improving our understanding of these matters is essential for efficient use of learning curves for model selection, speeding up model training, and to determine the value of more training data.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Pattern Recognition and Bioinformatic
Graphene: Microwave Enabled One‐Pot, One‐Step Fabrication and Nitrogen Doping of Holey Graphene Oxide for Catalytic Applications (Small 27/2015)
No full textPeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/112226/1/smll201570159.pd
Does corruption relieve foreign investors of the burden of taxes and capital controls?
No full textIn a sample of fourteen source countries making bilateral investments in forty five countries, the author finds that taxes, capital controls, and corruption, all have large, statistically significant negative effects on foreign investment. Moreover, there is no robust support in the data for the"efficient grease"hypothesis - that corruption helps attract foreign investment by reducing firms'tax burden and the irritant of capital controls.International Terrorism&Counterterrorism,Capital Markets and Capital Flows,Decentralization,Fiscal&Monetary Policy,Economic Theory&Research,Economic Theory&Research,International Terrorism&Counterterrorism,Governance Indicators,National Governance,Capital Flows
Stability analysis of transmission system with high penetration of distributed generation
No full textNowadays, interest in generating electricity using decentralized generators of relatively small scale ('distributed generation', DG) is increasing. This work deals with the impact of implementing DG on the transmission system transient stability, with the emphasis on a potential transition from a 'vertical power system' to a 'horizontal power system. A problem in power systems is maintaining synchronous operation of all (centralized) synchronous machines. This stability problem associated is called rotor angle stability. In this work, the impact of the DG implementation on this is investigated. The impact of DG levels on the system transient stability when the increasing DG level is followed by a reduction of centralized generators in service resulting in a 'vertical to horizontal' transformation of the power system is also investigated. Furthermore, a stochastic analysis is used to study the transient stability of the power systems. The results show that including the stochastic behavior of DG leads to a more complete and detailed view of the system performance. Finally, the situation when the power system is pushed towards a scenario, where DG penetration reaches a level that covers the total load of the original power system (100% DG level) is investigated. The research performed in this work indicates that from the transmission system stability point of view, if higher DG penetration levels are coming up, sufficient inertia and voltage support must be installed. Furthermore, one should be aware of the fact that the system behaves stochastically, especially with DG. To a certain extent regional balancing of power can be performed by local voltage control.Electrical Engineering, Mathematics and Computer Scienc
Software defined network-based HTTP flooding attack defender
No full textIn recent years, the explosive growth of the Internet has led to an increment in the number of Distributed Denial of Service (DDoS) attacks. HTTP Flooding is a critical DDoS attack that targets HTTP servers to prohibit users from receiving HTTP services. Moreover, it saturates the link bandwidth and consumes network resources. Because the attack is launched at the application layer, it is difficult to defend against it using current countermeasures such as firewall or Intrusion Prevention System (IPS). In this paper, we propose SHFD, which leverages the Software-Defined Networking (SDN) paradigm to mitigate HTTP flooding attacks. We implement SHFD as a defender module on the SDN controller to detect and mitigate the attack in the first place. Experimental results gathered from Mininet confirm that SHFD brings a significant improvement of 13% in detection time and 29% in the number of blocked malicious flows compared to the state-of-the-art approaches.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Cyber Securit
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