136 research outputs found
Azadeh Westergaard Flora Stieglitz Straus Award 2025 Acceptance Speech
No full textAuthor Azadeh Westergaard wins the Flora Stieglitz Straus Award 2025 for The One and Only Googoosh: Iran\u27s Beloved Superstar from Bank Street College Children\u27s Book Committee
The Flora Stieglitz Straus Award
Established in 1994 to honor Flora Straus, who led the Children’s Book Committee for many years, this award is presented annually for a distinguished work of nonfiction that serves as an inspiration to young people. Flora Straus stood for the values of courage, hard work, truth, and beauty while adapting to a changing world. She believed that books about varying cultures enrich and help all children in their growth. She championed diverse opinions and points of view and was a person of high principles, unfailing courtesy, and deep understanding.https://educate.bankstreet.edu/cbc_awards/1021/thumbnail.jp
Numerical Simulation of Like and Unlike Impinging Jets
No full text[EN] In the present study, using the open source OpenFOAM code, a numerical simulation is performed taking the adaptive
mesh refinement (AMR) technique during solution. Formation of liquid sheet after the impact of two identical cylindrical
jets at various conditions is studied. Since the flow pattern depends upon the Reynolds and Weber numbers, numerical
tests are conducted at a variety of flow velocities and Reynolds numbers to demonstrate the effect of these parameters
on the sheet formation. It is then concluded that at various conditions, different instabilities occur in the flow; hence,
different sheet formations a flow patterns happen.
In this study, impact of two dissimilar cylindrical fluid jets is successfully simulated for the first time in literature. Actually,
water and oil jets are taken into account and their impact behavior is studied. In the presence of the surrounding air, an
unstable sheet will form after impact due to the high injection speed of the jets. As depicted in the results, since the inertia
and other physical characteristics of the two fluids are dissimilar, different phases are more intensely diffused.Dolatkhahi, H.; Oliaee, G.; Kebriaee, A. (2017). Numerical Simulation of Like and Unlike Impinging Jets. En Ilass Europe. 28th european conference on Liquid Atomization and Spray Systems. Editorial Universitat Politècnica de València. 265-272. https://doi.org/10.4995/ILASS2017.2017.4865OCS26527
A Comprehensive Predictive Model to Predict Droplets Size Distribution in Pressure Swirl Atomizer
No full text[EN] A predictive model is proposed to determine the droplet size and velocity distribution at the beginning of the
secondary breakup. Liquid bulk is subjected to three stages of atomization including flow inside the injector, primary
atomization, and secondary atomization to change a spray. The flow inside pressure swirl injector consisting an
axial air core is a strongly complex two phase flow studied by highly precision coupled level set and volume of fluid
method (CLSVOF). Subsequently, breakup lengths, interface deformation, as well as the most unstable frequency
mode are calculated by nonlinear stability theory applied to emanating liquid sheet. Application of maximum entropy
principle (MEP) is the final stage to predict size and velocity distribution of spray droplets. Based on liquid sheet
breakup and conservative equations involving continuity, momentum, and energy, Newton-Raphson method is used
to solve MEP equations. The proposed model has no dependency on empirical data in comparison with the usual
past researches. The predicted results are shown to be in good agreement with the experimental findings related
to performance characteristics and droplets size.Jafari, S.; Kebriaee, A.; Sohrabi, S. (2017). A Comprehensive Predictive Model to Predict Droplets Size Distribution in Pressure Swirl Atomizer. En Ilass Europe. 28th european conference on Liquid Atomization and Spray Systems. Editorial Universitat Politècnica de València. 628-635. https://doi.org/10.4995/ILASS2017.2017.4845OCS62863
Corrigendum to “The association of food consumption and nutrient intake with endometriosis risk in Iranian women: A case-control study” [Int J Reprod BioMed 2019; 17: 661-670]
No full textThe authors have been informed of an error that occurred on page 661 in which the word “Iran” has been missed in the affiliation of the third author (Azadeh Mottaghi), which should be corrected as: “Research Center for Prevention of Cardiovascular Diseases, Institute of Endocrinology and Metabolism, Iran University of Medical Sciences, Tehran, Iran”. On behalf of the author, the publisher wishes to apologize for this error. The online version of article has been updated on 15 November 2022 and can be found at https://doi.org/10.18502/ijrm.v17i9.5102
Spatial Integration and Asymmetric Price Transmission in Selected Iranian Chicken Markets
No full textThis study evaluates pattern of price adjustments in selected spatially separated chicken markets in Iran using weekly price data from 1998:17 to 2006:41 including 441 observations in total. The results of Tsay’s test suggest that threshold behavior characterize spatial price linkages among the selected markets that imply on using the threshold models. We use the multi-dimensional (two and three regime) threshold cointegration of TAR and M-TAR models. Our results confirm the different speed of adjustment in response to positive and negative shocks in every case. We also utilize impulse response function to investigate dynamic patterns of adjustments in response to shocks.Spatial Integration, Price Transmission, Threshold Autoregression, Chicken, International Relations/Trade, Marketing,
Unemployment insurance in Algeria : implications for a labor market in transition
No full textTo predict how Algeria's unemployment crisis will evolve, the author evaluates the Algerian unemployment insurance system's ability to finance itself, to affect employment decisions, and promote enterprise restructuring. The main conclusion is that industrial restructuring has serious and persistent implications for the labor market. In an environment where many equilibria are possible, there is a real danger of reaching a high unemployment equilibrium. The big-bang experience of structural adjustment in Central and Eastern Europe transition economies resulted in large-scale unemployment. Despite considerable restructuring progress, structural rigidities still exist in the labor market, and long-term unemployment has persisted. One advantage of the big-bang approach is adjustment speed, but the resulting unemployment may be too costly for Algeria's economy, especially if it persists. A more modern mixed bang approach would incorporate active employment measures to mitigate entrenched unemployment. The policies will maintain or enhance human capital through work, so idle workers don't lose their skills. Flex-time arrangements would help workers maintain an attachment to the labor force. However minor, such work would help workers avoid the traps of long-term unemployment. Two striking conclusions emerge from the Central and Eastern European experience: a) unemployment is not essential to enterprise restructuring and labor market adjustment;and b) growing long-term unemployment is self-fulfilling and results in higher and persistence unemployment. Although active employment measures are costly and have relatively low rates of return in the short run, they can be marginally effective as part of a long-term strategy.Health Economics&Finance,Labor Policies,Environmental Economics&Policies,Labor Markets,Economic Theory&Research,Environmental Economics&Policies,Labor Markets,Economic Theory&Research,Health Economics&Finance,Banks&Banking Reform
Corporate communication as a governance mechanism: A content analysis of corporate public disclosures
No full textCorporate communication efforts have mainly been viewed as a by-product of governmental regulations and board of directors’ oversight. In this paper, we examine the role of corporate communication as a stand-alone governance mechanism. We introduce a new business-related dictionary and conduct automated textual analysis of over 150,000 electronic documents filed by a sample of firms listed on the S&P/TSX Composite Index from 1999 to the end of 2014. Our findings demonstrate the governing role of corporate communication by documenting the adverse market effects of deviations from the expected level of communication. Moreover, as a governance mechanism, corporate communication shows substitution/complementary relationships with other established governance mechanisms. In addition, we find a non-linear relationship between a firm’s communication efforts and its value and risk levels. Results are robust after controlling for major corporate events (M&A, spin-offs, financial distress and bankruptcy, and significant lawsuits). These findings contribute to corporate governance literature and the understanding of agency theory predictions of communications and disclosures’ economic effects
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