Zhuo Feng – författare

Social media shatters the barrier to communicate anytime anywhere for people of all walks of life. The publicly available, virtually free information in social media poses a new challenge to consumers who have to discern whether a piece of information published in social media is reliable. For example, it can be difficult to understand the motivations behind a statement passed from one user to another, without knowing the person who originated the message. Additionally, false information can be propagated through social media, resulting in embarrassment or irreversible damages. Provenance data associated with a social media statement can help dispel rumors, clarify opinions, and confirm facts. However, provenance data about social media statements is not readily available to users today. Currently, providing this data to users requires changing the social media infrastructure or offering subscription services. Taking advantage of social media features, research in this nascent field spearheads the search for a way to provide provenance data to social media users, thus leveraging social media itself by mining it for the provenance data. Searching for provenance data reveals an interesting problem space requiring the development and application of new metrics in order to provide meaningful provenance data to social media users. This lecture reviews the current research on information provenance, explores exciting research opportunities to address pressing needs, and shows how data mining can enable a social media user to make informed judgements about statements published in social media. Table of Contents: Information Provenance in Social Media / Provenance Attributes / Provenance via Network Information / Provenance Data

Social media shatters the barrier to communicate anytime anywhere for people of all walks of life. The publicly available, virtually free information in social media poses a new challenge to consumers who have to discern whether a piece of information published in social media is reliable. For example, it can be difficult to understand the motivations behind a statement passed from one user to another, without knowing the person who originated the message. Additionally, false information can be propagated through social media, resulting in embarrassment or irreversible damages. Provenance data associated with a social media statement can help dispel rumors, clarify opinions, and confirm facts. However, provenance data about social media statements is not readily available to users today. Currently, providing this data to users requires changing the social media infrastructure or offering subscription services. Taking advantage of social media features, research in this nascent field spearheads the search for a way to provide provenance data to social media users, thus leveraging social media itself by mining it for the provenance data. Searching for provenance data reveals an interesting problem space requiring the development and application of new metrics in order to provide meaningful provenance data to social media users. This lecture reviews the current research on information provenance, explores exciting research opportunities to address pressing needs, and shows how data mining can enable a social media user to make informed judgements about statements published in social media. Table of Contents: Information Provenance in Social Media / Provenance Attributes / Provenance via Network Information / Provenance Data

Natural hydrogen (H2) holds significant promise as a clean and renewable energy source that helps achieve a net-zero carbon future. However, the study of natural hydrogen reservoirs (NHRs) remains in its early stages, limiting their exploration and development. This book provides a comprehensive review of NHRs, including their geological occurrence environments, formation mechanisms, enrichment processes, advanced exploration and production technologies, and influencing factors. Although high concentrations of natural hydrogen have been identified globally, only the Bourakebougou hydrogen field in Mali has reached commercial production. This book outlines the current understanding of natural hydrogen systems, highlighting recent advancements, key challenges, and prospects for future energy supply. It provides a systematic examination of geological origin, accumulation, and preservation conditions of natural hydrogen, along with reservoir-forming processes, global distribution patterns, detection technologies, and future outlook. To unlock the full potential of NHRs, continued progress in geological exploration, detection, and extraction technologies is essential, along with a deeper understanding of hydrogen genesis and trapping mechanisms. Future research should focus on improving the efficiency and cost-effectiveness of hydrogen recovery, enhancing storage and transport solutions, and ensuring environmental and operational safety. Achieving a sustainable, hydrogen-powered future requires an interdisciplinary approach, integrating insights from geology, geoscience, engineering, and policy. This book aims to serve as a valuable reference for researchers, industry professionals, and decision-makers committed to advancing this emerging field of clean energy.

Natural hydrogen (H2) holds significant promise as a clean and renewable energy source that helps achieve a net-zero carbon future. However, the study of natural hydrogen reservoirs (NHRs) remains in its early stages, limiting their exploration and development. This book provides a comprehensive review of NHRs, including their geological occurrence environments, formation mechanisms, enrichment processes, advanced exploration and production technologies, and influencing factors. Although high concentrations of natural hydrogen have been identified globally, only the Bourakebougou hydrogen field in Mali has reached commercial production. This book outlines the current understanding of natural hydrogen systems, highlighting recent advancements, key challenges, and prospects for future energy supply. It provides a systematic examination of geological origin, accumulation, and preservation conditions of natural hydrogen, along with reservoir-forming processes, global distribution patterns, detection technologies, and future outlook. To unlock the full potential of NHRs, continued progress in geological exploration, detection, and extraction technologies is essential, along with a deeper understanding of hydrogen genesis and trapping mechanisms. Future research should focus on improving the efficiency and cost-effectiveness of hydrogen recovery, enhancing storage and transport solutions, and ensuring environmental and operational safety. Achieving a sustainable, hydrogen-powered future requires an interdisciplinary approach, integrating insights from geology, geoscience, engineering, and policy. This book aims to serve as a valuable reference for researchers, industry professionals, and decision-makers committed to advancing this emerging field of clean energy.