Interest has been growing in powering datacenters (at least partially) with renewable or "green" sources of energy, such as solar wind. However, it is challenging to use these because, unlike the "brown" (carbon-intensive) energy drawn from electrical grid, they are not always available. This means that demand and supply must be matched, if we take full advantage green minimize brown consumption. In this paper, investigate how manage a datacenter's computational workload match supply....

In this paper, we propose GreenSlot, a parallel batch job scheduler for datacenter powered by photovoltaic solar array and the electrical grid (as backup). GreenSlot predicts amount of energy that will be available in near future, schedules workload to maximize green consumption while meeting jobs' deadlines. If must used avoid deadline violations, selects times when it is cheap. Our results production scientific workloads demonstrate Green-Slot can increase up 117% decrease cost 39%,...

Several companies have recently announced plans to build "green" datacenters, i.e. datacenters partially or completely powered by renewable energy. These will either generate their own energy draw it directly from an existing nearby plant. Besides reducing carbon footprints, can potentially reduce costs, peak power both. However, certain fuels are intermittent, which requires approaches for tackling the supply variability. One approach is use batteries and/or electrical grid as a backup It...

In this paper, we first study the impact of load placement policies on cooling and maximum data center temperatures in cloud service providers that operate multiple geographically distributed centers. Based study, then propose dynamic distribution consider all electricity-related costs as well transient effects. Our evaluation studies ability different strategies to handle spikes, compares behaviors our cost-aware cost-unaware static policies, explores effects many parameter settings. Among...

The large amount of energy consumed by Internet services represents significant and fast-growing financial environmental costs. Increasingly, are exploring dynamic methods to minimize costs while respecting their service-level agreements (SLAs). Furthermore, it will soon be important for these manage usage "brown energy" (produced via carbon-intensive means) relative renewable or "green" energy. This paper introduces a general, optimization-based framework enabling multi-data-center brown...

Popular Internet services are hosted by multiple geographically distributed data centers. The location of the centers has a direct impact on services' response times, capital and operational costs, (indirect) carbon dioxide emissions. Selecting involves many important considerations, including its proximity to population centers, power plants, network backbones, source electricity in region, electricity, land, water prices at location, average temperatures location. As there can be potential...

COVID-19 outbreak has resulted in the largest number of lockdowns worldwide history. While may reduce spread COVID-19, downside costs this approach could be dreadful. By exploiting differential timing lockdown implementation across United States within a difference-in-differences framework, we find that pandemic are associated with variety adverse psychological outcomes, namely, anxiety, worry, disinterest, depression, and poor general health perception. Our mechanism analyses suggest these...

The purpose of this study was to evaluate how the impacts from 2022 World Cup preparations in Qatar influenced local residents’ attitudes, personal and community quality life perceptions, excitement about hosting event, support toward event. examination way mega sport event influence perceptions is lacking literature. Data were collected using systematic sampling October 2014 Qatari nationals white-collar expatriates. Overall, 2,163 interviews with (1,058) expatriates (1,105) completed....

Abstract This paper evaluates the impacts of education on women’s relational empowerment, within a context 70 developing countries across world. Exploiting variation in educational attainment between biological sisters, we find that is positively associated with intra-household decision making authority both financial and non-financial domains. Moreover, reduces friction, especially exposure to psychological abuse. Our mechanism analyses provide suggestive evidence these improvements could...

Recorded history demonstrates the preference for sons in every aspect of life. Today, despite being considered a powerful manifestation gender inequality and discrimination against women, over daughters is still prevalent worldwide. In this study, we investigate extent to which son influences health disparities between 66 developing countries. We find that differences height-for-age weight-for-age z-scores their peers are 0.135 0.098 standard deviation lower compared analogous due...

The large amount of energy consumed by Internet services represents significant and fast-growing financial environmental costs. This paper introduces a general, optimization-based framework several request distribution policies that enable multi-data-center to manage their brown consumption leverage green energy, while respecting service-level agreements (SLAs) minimizing cost. Our can be used abide caps on might arise from various scenarios such as government imposed Kyoto-style carbon...

On-site renewable energy has the potential to reduce datacenters' carbon footprint and power costs. The authors built Parasol, a solar-powered datacenter, GreenSwitch, system for scheduling workloads, explore this in controlled research setting.

In the midst of COVID-19 pandemic, universities throughout world are embracing online learning, often depending on synchronous and asynchronous digital communications. this paper, we compare impacts live (synchronous) pre-recorded (asynchronous) lectures student achievement using a randomized experiment. We discovered that reduce lower-ability students’ academic but have no effect higher-ability achievement. particular, being taught via as opposed to decreased likelihood answering exam...

Demand for clean products and services is increasing as society becoming increasingly aware of climate change. In response, many enterprises are setting explicit sustainability goals implementing initiatives to reduce carbon emissions. Quantification disclosure such have become important marketing tools. As individuals shift their workloads the cloud, this drive toward quantification will lead demand quantifiable green cloud services. Thus, we argue that providers should offer a new class...

Several companies have recently announced plans to build "green" datacenters, i.e. datacenters partially or completely powered by renewable energy. These will either generate their own energy draw it directly from an existing nearby plant. Besides reducing carbon footprints, can potentially reduce costs, peak power both. However, certain fuels are intermittent, which requires approaches for tackling the supply variability. One approach is use batteries and/or electrical grid as a backup It...

This paper provides evidence that the Allied bombing of Vietnam, longest and heaviest aerial bombardment in history, imposed detrimental ramifications on educational attainment future labor market outcomes school-age individuals. By exploiting plausibly exogenous district-by-cohort variation bomb destruction under a difference-in-differences framework, we find an increase intensity leads to significantly fewer years completed lower earnings for children exposed bombardment. We further show...