Aceptación de la innovación y la satisfacción del cliente: una encuesta sobre los sistemas de Información tributaria

The pace of introducing innovation-based products and services to the market is increasingly fast and it significantly affects customer  satisfaction,  not only for consumer  products  and services, but also in the delivery of public service services.  This paper uses innovation acceptance  and technology adoption models to investigate the acceptance and satisfaction  of taxpayers  from introduction  of new tax information system  in Iran. By a review of existing models and related effective factors, a conceptual model has been developed based on DeLone-McLean model, and was applied on users in the Iranian tax information system.  Findings of this research  show that factors that lead to information transparency  and more participatory users have a positive effect on innovation acceptance and the satisfaction  of users of such technologies.El ritmo de introducción al mercado de productos  y servicios  de base innovadora es cada vez más rápido y afecta significativamente la satisfacción del cliente, no sólo por los productos  y servicios de consumo, sino también en la prestación de los servicios públicos. Este artículo utiliza los modelos  de aceptación de la innovación  y de adopción de tecnología para investigar la aceptación y satisfacción de los contribuyentes en cuanto a la introducción de nuevos sistemas de información tributaria en Irán. A través  de una revisión de los modelos existentes  y los factores efectivos relacionados, ha sido desarrollado un modelo conceptual basado en el modelo DeLone-McLean y fue aplicado en usuarios en el sistema de información tributario iraní. Los hallazgos de esta investigación muestran que los factores que contribuyen a la transparencia en la información  y a generar usuarios más participativos tienen un efecto positivo en la aceptación de la innovación y la satisfacción  de los usuarios de dichas tecnologías

Learner- vs. expert-constructed outlines: Testing the associations with L2 text comprehension and multiple intelligences

Cognitive organizers (COs) are text aids which represent objects, concepts, and their relations by the use of symbols and spatial arrangements without adding to semantic content. The present study examines language learners’ text comprehension through outlines, a popular CO, compared with text-only condition, and further investigates the effect of learner-constructed outlines (i.e., systematic note-taking) and expert-constructed outlines (i.e., readymade displays) on comprehension. Finally, the predictive power of multiple intelligences (MI) across different input modalities is scrutinized. Following stratified random sampling, a total of 111 EFL undergraduates were divided into text-only (receiving a text twice), expert-constructed (the text followed by an outline), and learner-constructed (the text followed by an outline to be drawn up by the learner) groups. A TOEFL examination, a 1218-word expository text on systematic sleep disorder, a follow-up reading comprehension test, and a multiple intelligences inventory constituted the data collection measures. The results of multiple regression and ANOVA were as follows: (a) COs lead to more content recall than text displays; (b) expert-constructed and learner-constructed outlines are equally effective; (c) MI significantly predicts the groups’ reading comprehension; (d) interpersonal and intrapersonal intelligences are significant correlates of text-only groups’ performance; and (e) visual, verbal, and intrapersonal intelligences are significantly associated with learner-constructed groups’ reading scores. The study offers several implications for theory and practice

Study of Population Structure and Genetic Prediction of Buffalo from Different Provinces of Iran using Machine Learning Method

Considering breeding livestock programs to milk production and type traits based on existence two different ecotypes of Iranian’s buffalo, a study carried out to investigate the population structure of Iranian buffalo and validate its classification accuracy according to different ecotypes from Iran (Azerbaijan and North) using data SNP chip 90K by means Support vector Machine (SVM), Random Forest (RF) and Discriminant Analysis Principal Component (DAPC) methods. A total of 258 buffalo were sampled and genotyped. The results of admixture, multidimensional scaling (MDS), and DAPC showed a close relationship between the animals of different provinces. Two ecotypes indicated higher accuracy of 96% that the Area Under Curve (AUC) confirmed the obtained result of the SVM approach while the DAPC and RF approach demonstrated lower accuracy of 88% and 80 %, respectively. SVM method proved high accuracy compared with DAPC and RF methods and assigned animals to their herds with more accuracy. According to these results, buffaloes distributed in two different ecotypes are one breed, and therefore the same breeding program should be used in the future. The water buffalo ecotype of the northern provinces of Iran and Azerbaijan seem to belong to the same population

Visual Outcomes and Patient Satisfaction after Unilateral Implantation of a Diffractive Trifocal Intraocular Lens to Treat Cataract

AbstractPurpose: To assess clinical outcomes and patient satisfaction after unilateral implantation of a diffractive trifocal intraocular lens (IOL) following phacoemulsification in unilateral cataract.Patients and Methods: This retrospective case series study included six males and five females. Patients underwent phacoemulsification and unilateral implantation of a trifocal IOL (AT LISA tri 839MP, Carl Zeiss Meditec, Jena, Germany). Visual acuity was evaluated at 1 month, 3 months, 1 year, and 2 years postoperatively. Monocular and binocular contrast sensitivity and patient satisfaction were evaluated at 2 years of follow-up using 25 item National Eye Institute visual functioning questionnaire (NEI VFQ-25).Results: At 2 years, the mean uncorrected distance visual acuity was from 0.549 ± 0.32 to 0.021 ± 0.037 logMAR, uncorrected intermediate visual acuity was from 0.544 ± 0.31 to 0.018 ± 0.045 LogMAR, and uncorrected near visual acuity was from 0.52 ± 0.30 to 0.022 ± 0.045 LOGMAR showing a significant improvement in the operated eye. The VFQ-25 evaluation indicated that patients were satisfied with their outcomes. Also, Binocular contrast sensitivity measured by CSV1000 was similar to monocular contrast sensitivity.Conclusion: Unilateral implantation of trifocal intraocular lens can be considered as a safe and viable option in presbyopic patients with unilateral cataract. Keywords: Cataract; Surgery; Trifocal; Intraocular lens; Visual acuity

The Role of Emojis in Crime and Interpretive Challenges

In online communication, emojis are widely used and are often considered as beautiful and exciting additions to the original text. Emojis are now referred to as the "language of the online age" and "the fastest growing language in the world." In digital text messaging, it is possible to convey humor, emotion and sociality through emojis. However, the question is that in addition to the role of text beautification and transmission of emotions, is it possible to commit a crime by sending emojis? What are the challenges faced by jurisprudence in dealing with emojis as evidence? Therefore, the present article first examines the role of emojis in crimes such as intimidation and insults by recognizing different judicial examples of criminal cases and emoji-related proceedings, and then the challenges facing acceptance. Emoji evidence is evaluated in criminal proceedings.Findings show that criminal activities can be committed under the guise of emotional emoji function and their role in facilitating trust for a criminal purpose, and in particular crimes such as threatening, insulting or sexually abusing children, can be sent through Emojis occur. However, Criminal Courts In interpreting emojis and evaluating them as evidence,They face challenges such as poor expression and implication of emojis in criminal proceedings, change of platform, cultural differences in the interpretation of emojis, and instability of the psychological element in emoji-based crimes After getting acquainted with the challenges in emoji-based criminal proceedings, it has been tried to introduce solutions to these challenges in order to resolve the problems and create a unified judicial procedure

Turbulent channel flow of suspensions of neutrally buoyant particles over porous media

This study discusses turbulent suspension flows of non-Brownian, non-colloidal, neutrally buoyant and rigid spherical particles in a Newtonian fluid over porous media with particles too large to penetrate and move through the porous layer. We consider suspension flows with the solid volume fraction Φb ranging from 0 to 0.2, and different wall permeabilities, while porosity is constant at 0.6. Direct numerical simulations with an immersed boundary method are employed to resolve the particles and flow phase, with the volume-averaged Navier–Stokes equations modelling the flow within the porous layer. The results show that in the presence of particles in the free-flow region, the mean velocity and the concentration profiles are altered with increasing porous layer permeability because of the variations in the slip velocity and wall-normal fluctuations at the suspension-porous interface. Furthermore, we show that variations in the stress condition at the interface significantly affect the particle near-wall dynamics and migration toward the channel core, thereby inducing large modulations of the overall flow drag. At the highest volume fraction investigated here, Φb=0.2, the velocity fluctuations and the Reynolds shear stress are found to decrease, and the overall drag increases due to the increase in the particle-induced stresses.journal articl

The Effect of Corporate Governance on Export Performance of Iranian Listed Companies

This research aims to investigate the effect of corporate governance mechanisms on export performance. The statistical population includes 98 export companies listed on the Tehran Stock Exchange from 2010 to 2016. Data mining and statistical analysis are used to test the research hypotheses. This paper operationalizes the corporate governance mechanisms by the board of directors' independence, the concentration of ownership, and institutional investors. It further operationalizes export performance by export sales, export sales intensity, and the volume of export sales. The results show that ownership concentration has a significant effect on export sales. Furthermore, institutional investors have a significant effect on the volume of export sales. The current study may give great direction to companies exporting their products. In addition, the results also give researchers a path to focus on the current subject, especially in a developing country like Iran

Clear Lens Extraction for Correction of High Myopia

Purpose: To study clear lens extraction and posterior chamber intraocular lens implantation outcomes and safety in correction of high myopia.Patients and Methods: Medical records of 29 patients (40 eyes) who underwent clear lens extraction with posterior chamber IOL implantation to treat high myopia (Axial length > 26.6) were retrospectively reviewed. Visual acuity and refractive error were assessed before and after surgery, and preoperative, intraoperative, and postoperative complications were also recorded.Results: The mean postoperative follow-up period was 10.9 ± 4.63 months (Range, 6 - 19 months). The mean final best corrected visual acuity of 6/10 ± 2/10, was better than preoperative best corrected visual acuity (Mean: 2/10 ± 1/10). Final spherical equivalent (SE), (Mean = - 0.95 ± 0.45 diopters, Range - 0.25 to - 2 D) was better than preoperative SE (Mean = 19.41 D ± 5.31, Range 9 to 31 diopters). No cases of intraoperative complications occurred. The only postoperative complication was posterior capsule opacification in one eye 18 months after surgery and biometric error of (2 D) occurred in one eye. Conclusion: Clear lens extraction with posterior chamber IOL implantation in high myopic eyes has good outcomes with acceptable predictability, improvement in best corrected visual acuity and low rate of complications. Keywords: Intraocular lens; extraction; posterior chamber; myopia; Iran

Electrolyte and solvent effects on voltammetry behavior and surface morphology of Polypyrrole films deposited on glassy carbon electrode in the redox process

Polypyrrole (PPy) films were electrochemically synthesized on glassy carbon electrode in different electrolytes and solvent media. Voltammetry studies of PPy films doped with Cl−, ClO4−, NO3− anions showed that the redox activity of the polymer is affected by the nature of the anions and solvent used in the electrochemical synthesis. The mobilities of the anions exhibited a well-defined order: ClO4− < Cl− < NO3−. The electrodeposited PPy films were characterized ex situ independently by atomic force microscopy (AFM) technique. The effect of solvent on the surface morphology of PPy films was clarified by AFM imaging. Our results showed that the level of doping will depend on the polarity of the solvent used. In polar solvent like DMSO, the doping of Cl− anion is predominant. The results obtained suggested the presence of chemisorbed anions on the surface of PPy films

Effects of Intravenous Fluid Therapy on Clinical and Biochemical Parameters of Trauma Patients

Introduction: The administration of crystalloid fluids is considered as the first line treatment in management of trauma patients. Infusion of intravenous fluids leads to various changes in hemodynamic, metabolic and coagulation profiles of these patients. The present study attempted to survey some of these changes in patients with mild severity trauma following normal saline infusion. Methods: This study comprised 84 trauma patients with injury of mild severity in Shahid Rajaei Hospital, Shiraz, Iran, during 2010-2011. The coagulation and metabolic values of each patient were measured before and one and six hours after infusion of one liter normal saline. Then, the values of mentioned parameters on one and six hours after infusion were compared with baseline measures using repeated measures analysis of variance. Results: Eighty four patients included in the present study (76% male). Hemoglobin (Hb) (df: 2; F=32.7; p<0.001), hematocrit (Hct) (df: 2; F=30.7; p<0.001), white blood cells (WBC) (df: 2; F=10.6; p<0.001), and platelet count (df: 2; F=4.5; p=0.01) showed the decreasing pattern following infusion of one liter of normal saline. Coagulation markers were not affected during the time of study (p>0.05). The values of blood urea nitrogen (BUN) showed statistically significant decreasing pattern (df: 2; F=5.6; p=0.007). Pressure of carbon dioxide (PCO2) (df: 2; F=6.4; p=0.002), bicarbonate (HCO3) (df: 2; F=7.0; p=0.001), and base excess (BE) (df: 2; F=3.3; p=0.04) values showed a significant deteriorating changes following hydration therapy. Conclusion: It seems that, the infusion of one liter normal saline during one hour will cause a statistically significant decrease in Hb, Hct, WBC, platelet, BUN, BE, HCO3, and PCO2 in trauma patients with mild severity of injury and stable condition. The changes in, coagulation profiles, pH, PvO2, and electrolytes were not statistically remarkable.