This study examines data from 35 countries and 24 industries to understand the relationship between gender diversity and firm performance. Previous studies report conflicting evidence: some find that ...gender-diverse firms experience more positive performance, and others find the opposite. However, most research to date has focused on a single country or industry and has not accounted for possible variation across social contexts. This paper advances an institutional framework and predicts that gender diversity’s relationship with performance depends on both its normative and regulatory acceptance in the broader institutional environment. Using a unique longitudinal sample of 1,069 leading public firms around the world, I find that the relationship between gender diversity and firm performance varies significantly across countries and industries owing to differences in institutional context. The more that gender diversity has been normatively accepted in a country or industry, the more that gender-diverse firms experience positive market valuation and increased revenue. These findings underscore the importance of the broader social context when considering the relationship between gender diversity and firm performance.
This article explores racial stratification in work environments. Inequality scholars have long identified racial disparities in wage and occupational attainment, but workers’ careers and well-being ...are also shaped by elements of their work environment, including firm culture, managerial style, and work-life balance. I theorize two processes that could lead to racial inequality in firms’ work environments: (1) employee sorting due to exclusionary practices, and (2) spillover from racial differences in occupation and geographic location. To test this, I gathered a unique firm-level dataset composed of one million employee reviews, covering most large and medium-sized firms in the United States. I show that firms with more Black employees score lower for managerial quality, firm culture, and work-life balance, and firms with more Asian employees score higher on these dimensions. However, Asian employees’ advantage disappears when controlling for occupation, industry, and geography, whereas Black employees’ disadvantage persists, suggesting that the process of firm-level employee sorting is at work. Consistent with this, I find that Black employees’ disadvantage is strongest in areas with more conservative racial attitudes and more prevalent workplace racial discrimination. I then replicated the main findings using two entirely different data sources. Together, these results underscore racial inequality in work environments, an overlooked but important dimension of workplace inequality.
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This article suggests that regulations targeting the U.S. public sector may influence racial inequality in the private sector. Since the 1990s, nine states have banned affirmative action practice in ...public universities and state governments. I theorize that although these bans have no legal jurisdiction over private-sector firms, they could influence such firms normatively. After such a ban, executives who have been skeptical of Equal Employment Opportunity (EEO) policies may feel more normative license to reduce commitment to EEO practices. Using a difference-in-differences estimation on 11,311 firms from 1985 to 2015, I find that the bans are indeed associated with slower racial progress in private-sector firms: after a state adopts the affirmative action ban, growth in the proportion of Black managers in establishments with corporate headquarters in that state slows by more than 50 percent, and this slowdown is mostly concentrated in firms with politically conservative CEOs. These findings suggest a mechanism for the persistence of racial inequality and show that regulations can influence actors well beyond legal jurisdictions.
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IZUM, KILJ, NUK, ODKLJ, OILJ, PILJ, SAZU, UKNU, UL, UM, UPUK
This article argues that a society’s level of social trust influences employers’ hiring strategies. Employers can focus either on applicants’ potential and select on foundational skills (e.g., social ...skills, math skills) or on their readiness and select on more-advanced skills (e.g., pricing a derivative). The higher (lower) the social trust—people’s trust in their fellow members of society—the more (less) employers are willing to invest in employees and grant them role flexibility. Employers in higher-trust societies are therefore more attentive to applicants’ potential, focusing more on foundational skills than on advanced skills. We empirically test this theory by using a novel dataset of more than 50 million job postings from the 28 European Union countries. We find that the higher a country’s social trust, the more its employers require foundational skills instead of advanced skills. Our identification strategy takes advantage of multinational firms in our sample and uses measures of bilateral (country-to-country) trust to predict job requirements, while including an instrumental variable and fixed effects on country, year, employer, and occupation. These findings suggest a novel pathway by which social trust shapes employment practices and organizational strategies.
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IZUM, KILJ, NUK, ODKLJ, OILJ, PILJ, SAZU, UKNU, UL, UM, UPUK
In this article, Zhang first recounts his personal journey from being a “sent-down” youth to a returned researcher endeavoring to understand the logic and social fabric of the Chinese countryside ...during the collective era. He then demonstrates the interplay between internal and external forces that shaped and ultimately doomed the commune system. Finally, Zhang describes how he unexpectedly stumbled upon a large volume of personal letters soon after he founded the Center in 2011. Since then, with deliberate and unwavering effort, the Center has gathered a sizable collection of primary materials that provide invaluable insights into social life in China.1
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The Asian continent was formed through the amalgamation of several major continental blocks that were formerly separated by the Paleo-Asian and Tethyan Oceans. During this process, the Asian ...continent underwent a long period of continental crustal growth and tectonic deformation, making it the largest and youngest continent on Earth. This paper presents a review of the application of geophysical electromagnetic methods, mainly the magnetotelluric (MT) method, in recent investigations of the diverse tectonic features across the Asian continent. The case studies cover the major continental blocks of Asia, the Central Asian orogenic system, the Tethyan orogenic system, as well as the western Pacific subduction system. In summary, most of the major continental blocks of Asia exhibit a three-layer structure with a resistive upper crust and upper mantle and a relatively conductive mid-lower crust. Large-scale conductors in the upper mantle were interpreted as an indication of lithospheric modification at the craton margins. The electrical structure of the Central Asian orogenic system is generally more resistive than the bordering continental blocks, whereas the Tethyan orogenic system displays more conductive, with pervasive conductors in the lower crust and upper mantle. The western Pacific subduction system shows increasing complexity in its electrical structure from its northern extent to its southern extent. In general, the following areas of the Asian continent have increasingly conductive lithospheric electrical structures, which correspond to a transition from the most stable areas to the most active tectonic areas of Asia: the major continental blocks, the accretionary Central Asian orogenic system, the collisional Tethyan orogenic system, and the western Pacific subduction system. As a key part of this review, a three-dimensional (3-D) model of the lithospheric electrical structure of a large portion of the Tibetan Plateau is presented and discussed in detail; the model indicates tearing of the underthrusting Indian slab as well as complex crustal conductor geometries, which are not obviously consistent with the hypothesis of a continuous, eastward channel flow. These studies have greatly enhanced our knowledge of the formation and deformation processes of the Asian continent. Lastly, future research to expand field data coverage, improve related techniques, and integrate data from other disciplines is suggested.
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EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OBVAL, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
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•Solar cell and PEM fuel cell parameter estimations are investigated in the paper.•A new biogeography-based method (BBO-M) is proposed for cell parameter estimations.•In BBO-M, two ...mutation operators are designed to enhance optimization performance.•BBO-M provides a competitive alternative in cell parameter estimation problems.
Mathematical models are useful tools for simulation, evaluation, optimal operation and control of solar cells and proton exchange membrane fuel cells (PEMFCs). To identify the model parameters of these two type of cells efficiently, a biogeography-based optimization algorithm with mutation strategies (BBO-M) is proposed. The BBO-M uses the structure of biogeography-based optimization algorithm (BBO), and both the mutation motivated from the differential evolution (DE) algorithm and the chaos theory are incorporated into the BBO structure for improving the global searching capability of the algorithm. Numerical experiments have been conducted on ten benchmark functions with 50 dimensions, and the results show that BBO-M can produce solutions of high quality and has fast convergence rate. Then, the proposed BBO-M is applied to the model parameter estimation of the two type of cells. The experimental results clearly demonstrate the power of the proposed BBO-M in estimating model parameters of both solar and fuel cells.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UL, UM, UPCLJ, UPUK
Employers often recruit workers by invoking corporate social responsibility, organizational purpose, or other claims to a prosocial mission. In an era of substantial labor market inequality, ...commentators typically dismiss these claims as hypocritical: prosocial employers often turn out to be no more generous with low-wage workers than are other employers. In this article, we argue that prosocial commitments in fact inadvertently reduce earnings inequality, but through a different channel than generosity. Building on research on job values, we hypothesize that college graduates are more willing than nongraduates to sacrifice pay for prosocial impact. When employers appeal to prosocial values, they can thus disproportionately reduce pay for higher-educated workers. We test this theory with data on online U.S. job postings. We find that prosocial jobs requiring a college degree post lower pay than do standard postings with exactly the same job requirements; prosocial jobs that do not require a college degree, however, pay no differently from other low-education jobs. This gap reduces the aggregate college wage premium by around 5 percent. We present a variety of supplementary evidence using labor market data, worker survey responses, and a vignette experiment with hiring managers. The findings reveal an unintended consequence of employers’ embrace of prosocial values: it offsets macro-level inequality.
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Abstract
Resonance interaction between a molecular transition and a confined electromagnetic field can lead to weak or strong light-matter coupling. Considering the substantial exciton–phonon ...coupling in thermally activated delayed fluorescence (TADF) materials, it is thus interesting to explore whether weak light-matter coupling can be used to redistribute optical density of states and to change the rate of radiative decay. Here, we demonstrate that the emission distribution of TADF emitters can be reshaped and narrowed in a top-emitting organic light-emitting device (OLED) with a weakly coupled microcavity. The Purcell effect of weak microcavity is found to be different for TADF emitters with different molecular orientations. We demonstrate that radiative rates of the TADF emitters with vertical orientation can be substantial increased in weakly coupled organic microcavity. These observations can enhance external quantum efficiencies, reduce efficiency roll-off, and improve color-purities of TADF OLEDs, especially for emitters without highly horizontal orientation.
As a primary anticounterfeiting technology, most paper anticounterfeiting devices take advantage of photoresponsive behaviors of certain security materials or structures, thus featuring low-security ...threshold, which has been a critical global issue. To incorporate optoelectronic devices into existing anticounterfeiting technology suggests a feasible avenue to address this challenge. Here we report a high-performance organic light-emitting paper-based flexible anticounterfeiting (FAC) device with multiple stimuli-responsiveness, including light, electricity, and their combination. Without sacrificing the preexisted security information on the paper, we fabricate FAC device in a facile, low-cost yet high-fidelity fashion by integrating patterned electro-responsive and photo-responsive organic emitters onto paper substrates. By introducing optical microcavities, the FAC device shows considerable color shift upon different viewing angle and applied voltage, which is easily discernible by naked eyes. Notably, the FAC device is bendable, unclonable, and durable (a half-lifetime over 4000 hours at 100 cd m
).
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