Roadmap on printable electronic materials for next-generation sensors

The dissemination of sensors is key to realizing a sustainable, ‘intelligent’ world, where everyday objects and environments are equipped with sensing capabilities to advance the sustainability and quality of our lives—e.g., via smart homes, smart cities, smart healthcare, smart logistics, Industry 4.0, and precision agriculture. The realization of the full potential of these applications critically depends on the availability of easy-to-make, low-cost sensor technologies. Sensors based on printable electronic materials offer the ideal platform: they can be fabricated through simple methods (e.g., printing and coating) and are compatible with high-throughput roll-to-roll processing. Moreover, printable electronic materials often allow the fabrication of sensors on flexible/stretchable/biodegradable substrates, thereby enabling the deployment of sensors in unconventional settings. Fulfilling the promise of printable electronic materials for sensing will require materials and device innovations to enhance their ability to transduce external stimuli—light, ionizing radiation, pressure, strain, force, temperature, gas, vapours, humidity, and other chemical and biological analytes. This Roadmap brings together the viewpoints of experts in various printable sensing materials—and devices thereof—to provide insights into the status and outlook of the field. Alongside recent materials and device innovations, the roadmap discusses the key outstanding challenges pertaining to each printable sensing technology. Finally, the Roadmap points to promising directions to overcome these challenges and thus enable ubiquitous sensing for a sustainable, ‘intelligent’ world

Recognizing the behavioral patterns making progressive the problems of marriage

The present research has been conducted with the aim of recognizing the behavioral patterns making progressive the problems of marriage in Iranian community. The method of the research is qualitative and is a practical one in terms of the objective. The statistical population of the research is couples referring to one of the clinics of district 3 of Tehran. Sampling was conducted intentionally and randomly and 25 couples aged 30-60 were studied. In order for gathering data, semi- structured interview and for data analysis the continuous comparison method in Strauss and Corbin theory within the three levels of selective, axial and open coding was used. The results indicate that the behavioral patterns making progressive the problems of the couples are divided into the three classes of triangular, complementary and symmetrical patterns. This research has led to a deeper and more accurate recognition of the problems of couples and this way, it is possible to provide proper consulting solutions for improving marriage

Analyzing the Impact of Fundamental Factors and Institutional Variables on Exports of Emerging Countries (2000- 2015): Lessons for Iranian Economy

One of the most important factors in achieving sustainable economic growth and development is to increase exports, which is also the main goal of foreign trade policy. In this area, emerging countries have been able to achieve significant success in recent years. Therefore, studying the experiences of these countries can be effective in increasing Iranian exports. The purpose of this study is to investigate the effect of fundamental factors and institutional variables on exports of a selection of emerging economies during the period 2000-2015 using the panel data econometric method. Our results show that the effects of fundamental factors, namely total factor productivity, human capital and R&D expenditures, on export performance of select emerging countries are positive and significant and the effect of labor cost variable is negative and significant. Also, our results show that, in general, the effect of good governance variables, as an indicator of institutional factors, on exports of emerging countries is positive and significant. These results indicate that reducing production- and risk-costs and strengthening institutional foundations in emerging countries has led to a boost in investment and production arrangements in these countries and ultimately to an increase in exports. Also, our results show that the effect of consumption expenditures on export performance of select emerging countries is negative and significant and the effect of government tax revenues on export performance is a reversed U shape. These results show that based on The experiences of emerging countries, different countries have to pay attention to fundamental factors and institutional variables, in addition to conventional methods such as increasing exchange rates, export awards, etc., and implement reforms that are curb inefficiencies in goods and labor markets

Comparative analysis of the effects of institutional factors and Piketty's Hypothesis on inequality: Evidence from a panel of countries

There are many reports on investigating the influences of institutional factors and Piketty's Hypothesis on income inequality; nonetheless, the inequality effects of both factors are seemingly investigated separately. We hypothesize that economic freedom viewed as an institutional improvement or distortion has comparatively larger effects on inequality than the forces of income divergence introduced by Thomas Piketty. This article revisits the income inequality-(r-g) nexus and uncovers the role of economic freedom as an institutional indicator in explaining the relationship. Considering the latest inequality data of World Inequality Database (WID) and Standardized World Income Inequality (SWIID) for 82 countries over 2000-2017, an inequality model is estimated that explicitly captures the interaction effect of (r-g) and economic freedom. Reaffirming that economic freedom affects inequality in a non-linear form, we also found evidence that (r-g) raises inequality in the short run, demonstrating that preexisting holders of capital derive greater shares of income. Nevertheless, the effect of (r-g) is not as strong as that of economic freedom and is insignificant in highly unequal countries. This implies that institutional factors play a more important role than Piketty's Hypothesis in the presence of high inequality. Furthermore, variables of inflation, gross savings rate, trade openness, and unemployment rate are shown to be the most consistently positive and significant factor and GDP per capita, government spending, natural resource rent, and tax revenue variables have negative and significant effects on the baseline estimations

An Umbrella Review of Systematic Reviews and Meta-Analyses Evaluating the Success Rate of Prosthetic Restorations on Endodontically Treated Teeth

Statement of the Problem. Various direct and prosthetic restorations are clinically used to restore endodontically treated teeth. However, determining the most successful and reliable treatment to restore endodontically treated teeth is affected by numerous elements and still unclear for most clinicians. Therefore, this umbrella review study assessed the systematic/meta-analytic reviews (S/M-R) regarding the success rate of prosthetic restorations in endodontically treated teeth. Materials and Methods. The electronic search was conducted in the MEDLINE/PubMed, Cochrane, and Google Scholar databases until November 2020, regardless of language limitations. The inclusion criterion was as follows: S/M-R regarding prosthetic restorations in endodontically treated teeth. Three qualified researchers evaluated the inclusion criteria and bias risk. The fourth investigator was referred to when facing any doubtfulness. Results. From 43 achieved S/M-R, 14 studies were selected for this inquiry. Primary extracted information included success rate, survival rate, and postendodontic failure rate. Five S/M-R had a moderate risk of bias, and nine S/M-R had a low risk of bias and were considered strong clinical evidence in this examination. According to the low-risk reports, the success rate of fiber posts was higher than that of metal posts; the rate of root fracture in metallic and fiber posts was alike; the failure rate for fiber posts was comparable to fixed partial dentures or single crowns; the construction of endocrowns was likely to perform better than intracanal posts, composite resin, or inlay/onlay restorations. Conclusion. It appears that with practice and experience, deciding which type of restoration to choose changes. In dental restorations associated with root canal therapy, the single crowns are likely to be a proper option. Nevertheless, due to the heterogeneity of the studies, more clinical assessments are required to achieve more specific findings in this field

Roadmap on Printable Electronic Materials for Next-Generation Sensors

Abstract The dissemination of sensors is key to realizing a sustainable, ‘intelligent’ world, where everyday objects and environments are equipped with sensing capabilities to advance the sustainability and quality of our lives—e.g., via smart homes, smart cities, smart healthcare, smart logistics, Industry 4.0, and precision agriculture. The realization of the full potential of these applications critically depends on the availability of easy-to-make, low-cost sensor technologies. Sensors based on printable electronic materials offer the ideal platform: they can be fabricated through simple methods (e.g., printing and coating) and are compatible with high-throughput roll-to-roll processing. Moreover, printable electronic materials often allow the fabrication of sensors on flexible/stretchable/biodegradable substrates, thereby enabling the deployment of sensors in unconventional settings. Fulfilling the promise of printable electronic materials for sensing will require materials and device innovations to enhance their ability to transduce external stimuli—light, ionizing radiation, pressure, strain, force, temperature, gas, vapours, humidity, and other chemical and biological analytes. This Roadmap brings together the viewpoints of experts in various printable sensing materials—and devices thereof—to provide insights into the status and outlook of the field. Alongside recent materials and device innovations, the roadmap discusses the key outstanding challenges pertaining to each printable sensing technology. Finally, the Roadmap points to promising directions to overcome these challenges and thus enable ubiquitous sensing for a sustainable, ‘intelligent’ world.</jats:p