《优步的世界:算法是如何改写工作规则的》(Uberland:How Algorithms are Rewriting the Rules of Work)是美国数据与社会研究所的年轻学者Alex Rosenblat历时四年对Uber司机进行田野调查的研究成果。通过观察记录由算法掌控的互联网平...《优步的世界:算法是如何改写工作规则的》(Uberland:How Algorithms are Rewriting the Rules of Work)是美国数据与社会研究所的年轻学者Alex Rosenblat历时四年对Uber司机进行田野调查的研究成果。通过观察记录由算法掌控的互联网平台企业如何重塑传统职业与工作的事实过程,作者探讨了Uber崛起背后的美国创业精神传统与硅谷创新“神话”、Uber司机的社会经济特征与真实工作状态、算法管理模式中数据垄断与权力关系等诸多深刻的劳动社会学议题。这篇书评将重新梳理本书主要内容,并从技术变迁与社会结构的互动关系角度论述新技术革命下对劳动关系研究的重要性与必要性。展开更多
Surfaces submerged in seawater are colonized by various microorganisms,resulting in the formation of heterogenic marine biofilms.This work aims to evaluate the biofilm formation by Cobetia marina alex and doing a comp...Surfaces submerged in seawater are colonized by various microorganisms,resulting in the formation of heterogenic marine biofilms.This work aims to evaluate the biofilm formation by Cobetia marina alex and doing a comparative study between this promising strain with the two bacterial strains isolated previously from the Mediterranean seawater,Alexandria,Egypt.Three strains;Cobetia marina alex,Pseudoalteromonas sp.alex,and Pseudoalteromonas prydzensis alex were screened for biofilm formation using the crystal violet(CV)quantification method in a single culture.The values of biofilm formed were OD600=3.0,2.7,and 2.6,respectively leading to their selection for further evaluation.However,factors affecting biofilm formation by C.marina alex were investigated.Biofilm formation was evaluated in single and multispecies consortia.Synergistic and antagonistic interactions proved in this work lead to the belief that these bacteria have the capability to produce some interesting signal molecules N-acyl Homoserine Lactones(AHLs).展开更多
文摘《优步的世界:算法是如何改写工作规则的》(Uberland:How Algorithms are Rewriting the Rules of Work)是美国数据与社会研究所的年轻学者Alex Rosenblat历时四年对Uber司机进行田野调查的研究成果。通过观察记录由算法掌控的互联网平台企业如何重塑传统职业与工作的事实过程,作者探讨了Uber崛起背后的美国创业精神传统与硅谷创新“神话”、Uber司机的社会经济特征与真实工作状态、算法管理模式中数据垄断与权力关系等诸多深刻的劳动社会学议题。这篇书评将重新梳理本书主要内容,并从技术变迁与社会结构的互动关系角度论述新技术革命下对劳动关系研究的重要性与必要性。
文摘Surfaces submerged in seawater are colonized by various microorganisms,resulting in the formation of heterogenic marine biofilms.This work aims to evaluate the biofilm formation by Cobetia marina alex and doing a comparative study between this promising strain with the two bacterial strains isolated previously from the Mediterranean seawater,Alexandria,Egypt.Three strains;Cobetia marina alex,Pseudoalteromonas sp.alex,and Pseudoalteromonas prydzensis alex were screened for biofilm formation using the crystal violet(CV)quantification method in a single culture.The values of biofilm formed were OD600=3.0,2.7,and 2.6,respectively leading to their selection for further evaluation.However,factors affecting biofilm formation by C.marina alex were investigated.Biofilm formation was evaluated in single and multispecies consortia.Synergistic and antagonistic interactions proved in this work lead to the belief that these bacteria have the capability to produce some interesting signal molecules N-acyl Homoserine Lactones(AHLs).
