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Workers have the right to take up any job offer in their country of citizenship but not to rent out that right. This paper shows that relaxing this restriction using a two-sided competitive market in work permits can provide a basic income guarant...
This paper examines the impact of livelihood diversification on food insecurity amid the COVID-19 pandemic. The analysis uses household panel data from Ethiopia, Malawi, and Nigeria in which the first round was collected immediately prior to the p...
智能机器人在服务国家重大需求, 内容提供方:外唐用户 | 2025-01-16 发布 | 4.96MB | 20 页
纵向调查是分析人类群体随时间变化状态和变动的 一个极其宝贵的资源。然而,随着面板调查时间长 度的增加,保持估计值的准确性变得更加困难。主 要关注的是由于样本损耗(由死亡和搬迁引起)以 及新生人口和迁移流的影响导致的样本代表性不足 问题。此外,样本疲劳引入了不断增加的测量误差 。正确的设计、实施和使用面板调查考虑了一系列 方法来在统计过程的不同阶段解决这些问题:抽样 设计、数据收集和估计。本文专注于具有旋转样本 设计的面板案例。这种案例代表了一种强大的混合 解决方案,用于应对面板效应的影响。...
中部非洲城市野生动物消费的总体水平可能正在 耗尽野生动物种群。本研究通过在刚果民主共和 国金沙萨的两家餐馆进行两个随机对照试验,探 讨了需求侧和供给侧干预措施对野肉消费的影响 :需求侧实验和供给侧实验。在需求侧实验中,5 44名参与者被给予一张他们选择的餐厅的优惠券 ,并随机分配观看一则旨在减少野肉消费的治疗 视频或一则与野肉无关的控制视频。治疗组的参 与者比对照组少31%的可能性订购野肉,但这种 差异并不具有统计显著性,且可能受到社会期望 偏差的影响。在供给侧实验中,研究的问题是随 机降...
随着“Sephora Kids”现象的全球蔓延,我们⻅证了⼉童和⻘少年群体对美妆护肤产品需求的激增。 这⼀现象不仅揭⽰了未成年⼈群对美的追求,也映射出他们对个⼈护理的⽇益关注。据市场研究数据 显⽰,⼉童护肤品的国内市场总额预计到2025年将达到500亿⼈⺠币的规模,这⼀预测不仅基于消费 数据的增⻓,也反映了国内⻘少年护肤市场的巨⼤潜⼒。 ⾃疫情以来,针对⻘少年消费⼈群的护肤美妆类新品牌如⾬后春笋般涌现。例如,2020年成⽴的 Bubble品牌和去年底初成⽴的Gryt品牌,均已成功突破百万美...
Physical AI needs to be trained digitally first. It needs a digital twin of itself, the policy model, and a digital twin of the world, the world model. In this paper, we present the Cosmos World Foundation Model Platform to help developers build c...
Standard measures of inflation, such as changes in the Consumer Price Index, do not account for the different effects of inflation across income groups emerging from variations in consumption patterns and differences in price trends across consump...
探讨分布式光伏技术在中国云南省元阳县垭口村实现零碳乡村的可行性及环保效益,为农村地区的可再生清洁能源转型提供实践经验。采用生命周期分析法(Life Cycle AssessmentLCA)结合田野调查数据,对垭口村采用分布式光伏技术进行技术设计及碳排放量计算,比较其与传统能源的碳排放差异,并分析能源正义和社会问题。分布式光伏技术在场口村具有高度的可行性和显著的环保效益,能有效降低碳排放,提高村民生活质量,与传统能源相比具有更低的碳排放量和更高的环保性。分布式光伏技术在垭口村实现零碳乡村具有...
本文以辽宁省朝阳县贾家店农场为案例,通过对该试点项目村的基本概况和建设技术模式进行详细描述,突出了清洁取暖技术模式、低碳住宅技术模式和太阳光伏利用模式等方面的实施情况,并从顶层设计、碳核算体系的建立,农民广泛参与等角度提出了相关的思考,并就政策激励、产业发展以及节能减排等方面提出了具体建议,以期为相关试点建设提供参考。
Traditional Al Approaches in Human-Centric Studies. The application of Al in various human-centered fields has undergone a long progression, now reaching a pinnacle with the rise of generativemodels, with Al methods to being used investigate vario...
Replacing faulty measurements with missing values can suppress outlier-induced distortions in state-space inference. We therefore put forward two complementary methods for enhanced outlier-robust filtering and forecasting: supervised missing data ...
In 2019, 21.9 percent of the population in Pakistan lived below the national poverty line. Since then, the COVID-19 pandemic, devastating floods in 2022, and a macro-fiscal crisis with record inflation have profoundly impacted economic activity an...
This paper summarizes the approach used to estimate monetary poverty for Pakistan in 2019–20 at the district level. The small area estimation method is used to impute welfare from the Household Income and Expenditure Survey 2018–19 into the Pakist...
Assessment and evaluation have long been criti.cal challenges in artificial intelligence (Al) andnatural language processing (NLP). However,traditional methods, whether matching-basedor embedding-based, often fall short of judg.ing subtle attribut...