Adolescents' daily sense of school connectedness and academic engagement: Intensive longitudinal mediation study of student differences by remote,hybrid, and in-person learning modality

In spring 2020, the COVID-19 pandemic thrust nearly 56 million students in the United States into remote education. By fall 2020, states' and school districts' differing public health measures resulted in the adoption of varying COVID-adapted learning modalities (i.e., in-person, remote, and hybrid). Using daily diary data with a nationally representative sample (N = 517, M_age = 14.65 years), we investigated whether adolescents' academic engagement and connectedness to their teachers and classmates differed by COVID-adapted learning modalities. We also assessed whether adolescent connectedness mediated the link between learning modality and academic engagement. Results revealed that academic engagement and connectedness to teachers and classmates were higher for in-person learners than for students in hybrid and remote learning modalities. Moreover, students’ connectedness to classmates and teachers explained the relationship between learning modality and academic engagement.     

新型城镇化背景下多层次社会保障体系建立问题研究综述

新型城镇化不仅要求人口迁移和居住地的变化,而且要求更加注重让农民有和城市居民一样的社会保障、公共服务、文化设施等。本文先叙述了新型城镇化的内涵,然后在此基础之上又描述了该背景下有关多层次社会保障的建立问题。     

新冠疫情背景下科技社会组织社团参与社会治理的国际比较研究

科技类社会组织是科技人员基于学术自由、平等交流、互动自主机制自愿结合而成的非盈利社会组织,在参与国家治理方面具有其他社会组织不能比拟的天然优势。 秉持多元包容、协同互惠的新时期科技产业价值,顺应国家建设科技强国的战略要求,科技社团作为社会组织的组成之一,有能力也有理由更加积极地参与国家治理。本文聚焦新冠疫情期间中外科技社团参与疫情应对的程度和方式,通过多案例比较研究方法具体分析了对科技社团参与社会治理的情况进行了国际比较,并得出探讨了我国科技社团参与社会治理的优势和不足,并对此从科技社团自身、政策环境和科技社团与上级部门的关系三个角度提出相应建议。     

皖麦19高产的氮素与密度效应研究

本试验采用二次饱和Ｄ———最优设计,分析了皖麦１９氮素和密度７５００ｋｇ／ｈｍ２的产量效应,得出综合效应方程。结果表明：氮素的增产效应大于密度,二者互作是负效应。增施氮肥能明显增加公顷穗数和穗粒数,增加密度也能增加公顷穗数,但两者增加都会使千粒重下降。达到最高产量７９５４ｋｇ／ｈｍ２时的施氮量是２７０ｋｇ／ｈｍ２,密度是１７２万／ｈｍ２苗,这时最理想的产量结构是每公顷５４０．９万穗,每穗４４粒,千粒重３５．３克。     

Business optimism and the innovation-profitability nexus: Introducing the COVID-19 adaptable capacity framework

In this paper we develop a novel multi-stage integrative framework for technology foresight-planning. This framework integrates econometric analysis and a technology foresight procedure to predict: (i) the most COVID-19 resilient industries at the national level; and (ii) the most adversely affected industries (due to prior investment in innovation) that requires public support. Our econometric results show that the pandemic has induced a ‘double-edge sword’ effect of innovation on firm’s COVID-19 adaptable capacity (CAC). Costly innovation undertaken before the pandemic can be bad for firms if it compounds the problem of declining post-pandemic outbreak profit and optimism. Contrarily, firm level innovation improves firm’s CAC as the prior innovators’ profitability are found to have above-even odds of rebounding quickly post-pandemic outbreak. Our empirical analysis focuses mostly on developing economies, where firms are most likely implementing only incremental (non-frontier) innovation and thus our results should be generalized with caution.     

Organizational resilience and digital resources: Evidence from responding to exogenous shock by going virtual

Recent events have renewed attention to how organizations rely on digital resources in response to exogenous shock. Though the literature on organizational resilience indicates that this is best understood as a process through which organizational actors respond to a specific shock, most IS research attends to resilience as an outcome. Against that backdrop, we present a case study of how a university shifted to virtual teaching in response to a government-imposed lockdown during the COVID-19 pandemic. Adopting a digital resourcing perspective allowed us to reveal the organizational resilience process and the way digital resources shaped it. We found that the resilience process unfolded in stages as educators, assisted by students, managers, and IT personnel pivoted, adapted, and normalized into teaching virtually. Across these stages, digital resources took on specific roles as the resilience process progressed from the organization’s pre-shock accumulation of digital resources into its continued digitalization efforts. Based on these findings, we contribute to existing literature by advancing and empirically substantiating a process view of the role of digital resources in organizational resilience.     

孙锦标与南通方言研究

《南通方言疏证》为孙锦标著述四种之一,计四卷五十类,大致以“人事”、“自然”、“生物”为序;释义主要针对《光绪通州志·方言》辨正、溯源、订补;注音包括直音、读若、反切三类;引证广泛,例证丰富;在中国语言学史上有史料价值,在南通方言史研究方面有语料价值,在语词归类、本字考订、音理分析方面有一定的瑕疵。     

十九世纪德国大学对科学发展的影响

本文从十九世纪德国大学学者对科学发展的贡献、十九世纪德国大学理念对世界大学办学模式的改变出发,通过少数事例的追踪,探讨德国大学对世界科学发展的影响。     

Case Report: CD19-positive acute myeloblastic leukemia with trisomy 21 as a sole acquired karyotypic abnormality

We report that a 63-year-old Chinese female had acute myeloblastic leukemia (AML) in which trisomy 21 (+21) was found as the sole acquired karyotypic abnormality. The blasts were positive for myeloperoxidase, and the immunophenotype was positive for cluster of differentiation 19 (CDI9), CD33, CD34, and human leukocyte antigens (HLA)-DR. The chromosomal analysis of bone marrow showed 47,XX,+21 [2]/46,XX[18]. Fluorescent in situ hybridization (FISH) showed that three copies of AML1 were situated in separate chromosomes, and that t(8;21) was negative. The patient did not have any features of Down syndrome. A diagnosis of CD19-positive AML-M5 was established with trisomy 21 as a sole acquired karyotypic abnormality. The patient did not respond well to chemotherapy and died three months after the diagnosis. This is the first reported case of CD19-positive AM L with trisomy 21 as the sole cytogenetic abnormality. The possible prognostic significance of the finding in AML with +21 as the sole acquired karyotypic abnormality was discussed.     

CD19-positive acute myeloblastic leukemia with trisomy 21 as a sole acquired karyotypic abnormality

We report that a 63-year-old Chinese female had acute myeloblastic leukemia (AML) in which trisomy 21 (+21) was found as the sole acquired karyotypic abnormality. The blasts were positive for myeloperoxidase, and the immunophenotype was positive for cluster of differentiation 19 (CD19), CD33, CD34, and human leukocyte antigens (HLA)-DR. The chromosomal analysis of bone marrow showed 47,XX,+21[2]/46,XX[18]. Fluorescent in situ hybridization (FISH) showed that three copies of AML1 were situated in separate chromosomes, and that t(8;21) was negative. The patient did not have any features of Down syndrome. A diagnosis of CD19-positive AML-M5 was established with trisomy 21 as a sole acquired karyotypic abnormality. The patient did not respond well to chemotherapy and died three months after the diagnosis. This is the first reported case of CD19-positive AML with trisomy 21 as the sole cytogenetic abnormality. The possible prognostic significance of the finding in AML with +21 as the sole acquired karyotypic abnormality was discussed.