Physical Sciences and Mathematics Commons^™

Green Transition Situations And Development Suggestions For Upstream Petroleum Industry, Lirong Dou, Feng Gao, Yun Peng, Xi Wang, Liang Xiong

Bulletin of Chinese Academy of Sciences (Chinese Version)

In the current global energy transition process, which is accelerating overall but with further uncertainty, the global oil and gas industry is showing four major trends: a shift in business structure from oil and gas dominance to multi-energy complementarity, a shift in market structure from globalization to differentiation between the Eastern and Western hemispheres, a shift in policy orientation from radical transition to orderly development, and an expansion of technological innovation from traditional to emerging fields. Governments of various countries and international oil companies have made adjustments to policies, strategic goals, implementation paths, and other aspects based on their own …

Strategic Study On Leading Construction Of Modern Agricultural System By Technology Innovation, Yan Yan, Xurong Mei, Xiudong Wang

Bulletin of Chinese Academy of Sciences (Chinese Version)

Technology innovation is the fundamental solution to build a modern agricultural system, and it is also an important support for building the large base, large enterprise, and large industry of modern agriculture and achieving the modernization of material equipment, technology, management, agricultural informatization, and sustainable resource utilization of agriculture. This paper explains the scientific concepts and logical relationships of the agricultural production system, industrial system and management system, which are the main components of a modern agricultural system. It emphasizes that ensuring food security, promoting industrial integration and upgrading, and cultivating leading enterprises are current key tasks. Nevertheless, from the …

Analysis Of Demand And Recycling Potential Of Lithium, Cobalt, And Nickel Under Energy Transition Emdash From Perspective Of Electric Vehicles, Xiong Ying, Shouyang Wang, Yuyao Yang

Bulletin of Chinese Academy of Sciences (Chinese Version)

With the rapid growth of demand for lithium, cobalt, and nickel, China, the United States, and the European Union have classified them as critical minerals. This study investigates the rise of China’s and the global electric vehicle industry in relation to the demand for lithium, cobalt, and nickel, forecasts the potential for recycling these metals, and evaluates the challenges to resource security of these metals faced by China. The findings underscore the necessity of enhancing international collaboration in mineral extraction abroad and enhancing capabilities to safeguard overseas assets and equity. The study advocates for expediting the establishment of an electric …

Constructing Problemology That Is Symmetrical To Methodology—Taking Computer Science As An Example, Yuhang Liu, Yunquan Zhang

Bulletin of Chinese Academy of Sciences (Chinese Version)

Institutionalized scientific research encourages free exploration while emphasizing the organization and coordination of research activities. Nevertheless, overcoming dispersion and repetition in the research process is an urgent problem to be addressed. Taking computer science as an example, to implement the problem-oriented concept, this study proposes constructing problemology that is symmetrical to methodology. Methodology is the important manifestation of scientific and technological achievements, and symmetrically, problemology is needed by the scientific research community. The problematique is a crucial component of problemology, representing the level of understanding of problems within the scientific research community. Through problematique as a medium, it connects, bridges, …

Fundamental Theory And Technological Innovation In Soil Carbon And Nitrogen Cycling: Promoting Sustainable Development Of Agriculture, Xu Zhao, Longlong Xia, Yongqiu Xia, Xiaoyuan Yan

Bulletin of Chinese Academy of Sciences (Chinese Version)

The Changshu National Agro-Ecosystem Observation and Research Station (hereinafter referred to as Changshu Station) was officially established in 1987. Changshu Station is the only multidisciplinary comprehensive observation, research, and demonstration station within Chinese Academy of Sciences in the Yangtze River Delta region, focusing on researches about agricultural production, resources utilization, and environmental protection. Since its establishment, Changshu Station is the pioneer in conducting systematic observational research on soil nitrogen cycling, soil carbon sequestration, greenhouse gas (GHG) mitigation, and agricultural non-point source pollution. Over the past five years, Changshu Station has focused on three major scientific issues facing green and sustainable …

Policy Overview (June, 2024)

Bulletin of Chinese Academy of Sciences (Chinese Version)

No abstract provided.

Designing Learning Trajectory To Support Preservice Mathematics Teachers' Skills In Creating And Implementing Realistic Mathematics Tasks, Veronika Fitri Rianasari, Angela Fatima H. Guzon

Mathematics Faculty Publications

In mathematics teaching and learning, mathematics tasks embedded in realistic contexts are crucial for developing mathematical concepts, procedures, and the application of mathematical knowledge. Despite this, mathematics teachers often encounter challenges in designing and implementing such realistic mathematics tasks. Therefore, this study aims to construct a learning trajectory to enhance preservice mathematics teachers' abilities to create and implement Realistic Mathematics Tasks (RMTs). Employing a design research methodology, the study comprises three phases: preliminary design, teaching experiment, and retrospective analysis. The data presented in this article are from the first cycle, encompassing all three phases. The research involved four fourth-year preservice …

Predicting Choroidal Nevus Transformation To Melanoma Using Machine Learning, Prashant D. Tailor, Piotr K. Kopinski, Haley S. D'Souza, David A. Leske, Timothy W. Olsen, Carol L. Shields, Jerry A. Shields, Lauren A. Dalvin

Wills Eye Hospital Papers

PURPOSE: To develop and validate machine learning (ML) models to predict choroidal nevus transformation to melanoma based on multimodal imaging at initial presentation.

DESIGN: Retrospective multicenter study.

PARTICIPANTS: Patients diagnosed with choroidal nevus on the Ocular Oncology Service at Wills Eye Hospital (2007-2017) or Mayo Clinic Rochester (2015-2023).

METHODS: Multimodal imaging was obtained, including fundus photography, fundus autofluorescence, spectral domain OCT, and B-scan ultrasonography. Machine learning models were created (XGBoost, LGBM, Random Forest, Extra Tree) and optimized for area under receiver operating characteristic curve (AUROC). The Wills Eye Hospital cohort was used for training and testing (80% training-20% testing) with …

Monetary Policy Impact On Stock Returns For Selected South Asian Countries, Neluka Devpura, Paresh Kumar Narayan, Navin Perera

Bulletin of Monetary Economics and Banking

In this paper, we examine the monetary policy impact on the stock market returns and volatility for four major South Asian countries (Bangladesh, India, Pakistan, and Sri Lanka). We test our hypothesis that monetary policy influences both the first and second order of stock returns by using monthly data. The short-term interest rate and the Treasury bill rate are employed as proxies for monetary policy. Controlling for industrial production, inflation, exchange rates (vis-à-vis the US dollar), US interest rate, and money supply, our findings indicate that there exists a statistically significant impact of short-term interest rates on stock returns only …

Scientific Understanding And Transformation Pathways For “Ice And Snow Are Also As Valuable As Gold And Silver”, Qi Feng, Shijin Wang, Rongfang Zhao, Bao Wang

Bulletin of Chinese Academy of Sciences (Chinese Version)

“Lucid waters and lush mountains are invaluable assets”, and “ice and snow are also as valuable as gold and silver”. Excellent ecology, ecological enrichment, and happy life are concrete manifestations of the Chinese-style modernization featuring harmonious coexistence between human beings and nature. Compared with lucid waters and lush mountains, ice and snow covered land is mostly concentrated in winter and spring, making it rather difficult to transform them into mountains of gold and silver. How to forge a pathway of high-quality development of the ice and snow economy to drive the revitalization of rural industries in winter and spring is …

Three-Stage Transformation And Practical Path Of “Lucid Waters And Lush Mountains Are Invaluable Assets” Concept, Lei Shen, Chao Zhang, Shuai Zhong

Bulletin of Chinese Academy of Sciences (Chinese Version)

“Lucid waters and lush mountains are invaluable assets” concept (hereinafter referred to as two mountains concept) serves as the important component for China’s ecological civilization construction, breaking the dilemma of traditional development and environmental protection, and fostering the synergy between economy and ecology. Based on a framework integrating conceptual evolution, institutional construction, and practical implementation, this study examines the three stages: the awakening of paradigm and local breakthroughs during the ice-breaking period (2005–2012), system construction and national promotion in the establishment period (2013–2017), and value transformation and global contribution in the sublimation period (2018–present). The analysis reveals that the two …

Exploration And Practice Of Major Function Zoning Based On That “Lucid Waters And Lush Mountains Are Invaluable Assets, Jie Fan, Jian Gao

Bulletin of Chinese Academy of Sciences (Chinese Version)

President Xi Jinping’s thought of that “lucid waters and lush mountains are invaluable assets” has led China to modernize in a new form of ecological civilization, and it is also the general guideline for upgrading the major function zoning (MFZ) from planning to a national strategy and basic institution. Focusing on key ecological function zones of the MFZ, this study contends that the implementation of the MFZ strategy is a systematic exploration and innovative practice of the two mountains concept. It clarifies that the original intention of the MFZ is to protect lucid waters and lush mountains by combing through …

Empirical Study On “Lucid Waters And Lush Mountains Are Invaluable Assets” In Harmonious Development Of Human-Mountain Relationship In Southwest Mountainous Regions, China, Yiping Fang, Xinjun He, Xueyuan Huang

Bulletin of Chinese Academy of Sciences (Chinese Version)

As the country with the largest mountainous area in the world, China’s research on two mountains (“lucid waters and lush mountains are invaluable assets”) concept in mountainous sustainable development holds significant theoretical and practical implications for unleashing green productivity, fostering new quality productive forces, and advancing the modernization of harmonious coexistence between humans and mountains. This study employs emergy analysis and literature review to evaluate the value transformation efficiency of two mountains concept across 37 national two mountains practice bases in mountainous counties of Southwestern China. The results indicate that: (1) the transformation level is higher in urban core areas …

Prospective And Strategic Value Of Roadmap For Regional Sustainable Development Research—Post-Evaluation Of Regional Development Research In China: A Roadmap To 2050, Rui Guo, Hanchu Liu, Jie Fan

Bulletin of Chinese Academy of Sciences (Chinese Version)

In 2007, the Chinese Academy of Sciences (CAS) pioneered China’s 2050 science and technology development strategy and roadmap research, published the “Innovation 2050” strategic research series in 2009. The Regional Development Research in China: A Roadmap to 2050 (hereafter referred as to Roadmap) was one of these 19 reports. This study evaluates the implementation effectiveness of CAS’s regional sustainable development initiatives since publication through the lens of Xi Jinping’s Thought on Ecological Civilization particularly the “lucid waters and lush mountains are invaluable assets” (two mountains) concept, while concurrently assessing the Roadmap’s strategic research outcomes. Key findings include the followings. (1) …

Innovative Practices And Application Exploration Of Gross Ecosystem Product (Gep) Accounting In Lishui City, Zhejiang Province, Qin Qiao, Qingxia Lin, Yi Li, Huiyi Yu, Chao Zhang

Bulletin of Chinese Academy of Sciences (Chinese Version)

Improving the mechanism for realizing the value of ecological products is a crucial approach to implementing the concept that “lucid waters and lush mountains are invaluable assets,” and it holds significant importance for promoting the transformation of ecological value and the green transition of the economy and society. As China’s first pilot city for the ecological product value realization mechanism, Lishui City has consistently innovated in gross ecosystem product (GEP) accounting and the application of its outcomes, offering a model and reference for nationwide ecological product value realization. This study systematically examines Lishui’s exemplary practices in ecological product value realization …

Empowering High-Quality Development In Mengyin County Of Shandong Province Through Honey Peach Industry, Xue Wang, Yunquan Miao, Liangjie Xin

Bulletin of Chinese Academy of Sciences (Chinese Version)

As a typical old revolutionary base area county, mountainous county, and national key ecological function zone, Mengyin County has deeply implemented the concept of “lucid waters and lush mountains are invaluable assets” (two mountains concept), empowering the high-quality development of its peach industry through ecological means. By optimizing the ecological environment, Mengyin has laid a solid foundation for the peach industry, transforming its pristine ecology into a natural competitive advantage for industrial growth. Leveraging scientific and technological innovation, the county has driven the upgrading and extension of the peach industry chain, while simultaneously pioneering circular agriculture models and integrating tertiary …

Scientific Interpretation Of Notion That “Lucid Waters And Lush Mountains Are Invaluable Assets” And Its Case Study, Kai Fang, Chenglin Li, Sirui Zhu, Ling Zhu, Wei Wu

Bulletin of Chinese Academy of Sciences (Chinese Version)

The notion that “lucid waters and lush mountains are invaluable assets” serves as a basis of thinking for embracing ecological civilization in China’s new era. This study makes an effort to define both ecological economization and economic ecologization, identify the typologies, and elaborate on the theoretical logic of interaction between them. By proposing such a conceptual framework, the study further looks back to the practical experiences in Anji County, the birthplace of the notion, by focusing on the practical logic of the interaction between them. Finally, the study comes up with policy recommendations for the notion: establishing ecological product markets …

“Lucid Waters And Lush Mountains Are Invaluable Assets”: Pathways And Prospects For Ecological Gdp In The Yellow River Basin, Guangqian Wang

Bulletin of Chinese Academy of Sciences (Chinese Version)

This study, following Xi Jinping’s ecological civilization philosophy and the two mountains concept, explores pathways for realizing ecological value and mechanisms for ecological GDP in the Yellow River Basin. The research demonstrates that the two mountains concept breaks through the limitations of traditional development paradigms, providing a foundational guide for ecological conservation and high-quality development in the Yellow River Basin. The research shows that constructing an ecological asset system and incorporating it into GDP accounting is the key to addressing the challenges of ecological value transformation. This requires adherence to the principles of “requisition-compensation balance” and “market-based transaction”, coupled with …

Theoretical Connotations And Chinese Practices Of Nature-Based Solutions, Bojie Fu, Jun Wang

Bulletin of Chinese Academy of Sciences (Chinese Version)

The global ecological environment is confronted with severe challenges such as intensified climate change, drastic reduction of biodiversity and land degradation, which seriously affect the sustainable development of human beings. These challenges promote profound reflection on the relationship between human beings and nature. Nature-based Solutions (NbS) has emerged as an innovative concept of global ecological governance thateffectively responds to societal challenges. Its development has gone through embryonic stage, developmental stage and comprehensive application stage. Multidisciplinary principles such as restoration ecology and landscape ecology constitute the theoretical foundation of NbS. China has effectively integrated the concept of NbS with the construction …

Editorials

Bulletin of Chinese Academy of Sciences (Chinese Version)

No abstract provided.

Practicing Concept Of “Lucid Waters And Lush Mountains Are Invaluable Assets” To Advance High-Quality Development Of Territorial Space, Kai Wang

Bulletin of Chinese Academy of Sciences (Chinese Version)

The concept of “lucid waters and lush mountains are invaluable assets” (two mountains concept) constitutes an important component of Xi Jinping Thought on Ecological Civilization, providing the fundamental guidance for establishing China’s territorial space planning system and its associated technical framework. This study analyzes the specific manifestations and root causes of the periodic conflicts between urban development space and ecological space in China. It further examines the theoretical value and practical significance of the two mountains concept in fostering a harmonious coexistence between humanity and nature from the perspective of spatial planning. Currently, China is in a critical period for …

Strategic Insights For Developing Protected Areas System With National Parks As Mainstay In New Era: Marking 20 Years Of “Lucid Waters And Lush Mountains Are Invaluable Assets”, Baorong Huang, Xuetian Hu, Huizhi Zhang, Ling Tang, Zhi Wang, Zhi Zhang

Bulletin of Chinese Academy of Sciences (Chinese Version)

In the new era, the advancement of Chinese path to modernization places new demands on the development of a protected areas system with national parks as the mainstay. At the same time, as reform deepens, the system faces emerging challenges, including outdated conservation concepts, insufficient systemic integration, proliferation of management exclusions, and weak social functions, hindering the effective transformation of lucid waters and lush mountains into invaluable assets. This study recommends that, guided by the two mountains concept and aligned with the strategic goals of national modernization, China must comprehensively advance the construction and reform of the protected areas system …

Vivid Practice Of Enriching People With Tea In Wuyishan, Nanping, Fujian, Zhenlin Fan, Shengmeng Zheng, Jiamei Wu, Sen Liang

Bulletin of Chinese Academy of Sciences (Chinese Version)

The tea industry serves as the hallmark of Wuyishan City, Fujian Province, and represents a distinctive sector that promotes local prosperity and urban development. Wuyi Mountain leverages its Danxia landform ecological foundation and centuries-old tea culture heritage to integrate the coordinated development of tea culture, tea industry, and tea science and technology, thereby establishing an innovative pathway for transforming “lucid waters and lush mountains” into “ecological premiums” and ultimately into “invaluable assets”. To address structural issues in the traditional tea industry, Wuyishan has promoted ecological cultivation as the foundation for enhancing processing standardization and brand development, thereby facilitating industrial transformation …

How To Realize Value Of Public Ecosystem Services And Promote Its Supplement? A Government Solution In Beijing, Baolong Han, Qi Wang, Haoqi Wang, Zhiyun Ouyang

Bulletin of Chinese Academy of Sciences (Chinese Version)

The regulating services provided by ecosystems are an important safeguard for regional ecological security, and are typical public service products characterized by non-excludability and non-rivalry. Compared with the material provisioning products and cultural service products of ecosystems, regulating services face significant shortcomings in market-based value realization and monetization capacity, making them difficult to trade and monetize. This study systematically introduces the experiences of Beijing and particularly Yanqing District and Mentougou District in overcoming bottlenecks and promoting the monetization and enhancement of regulating service products. In the area of value realization, major efforts have focused on policy preparation and the cultivation …

Practice Path And Empirical Evidence Of “Lucid Waters And Lush Mountains Are Invaluable Assets” Concept In Changshan Archipelago, Northern Yellow Sea, China, Hui Wang, Sirui Chen, Rina Wu

Bulletin of Chinese Academy of Sciences (Chinese Version)

Against the backdrop of the in-depth integration of China’s “maritime power” strategy, the “dual-carbon” goals and the concept that “lucid waters and lush mountains are invaluable assets” (hereinafter referred to as the two mountains concept), the Changshan Archipelago, as the only border island group in China and the largest island group in the northern Yellow Sea, have the dual attributes of an ecological barrier and an economic carrier. It is an ideal sample for exploring the transformation of the two mountains concept on islands. This study elaborates on its strategic positioning in safeguarding national maritime frontier security, maintaining the northern …

Atmospheric Water Resources Utilization: Technology, Applications, And Ecological Economic Benefits, Min Chen, Tiejian Li, Yuefei Huang, Guoxin Chen

Bulletin of Chinese Academy of Sciences (Chinese Version)

Water resources are important elements for maintaining ecological balance and ensuring biodiversity, which are also the basic resources for the development of agriculture, industry, and services. It is of great significance to alleviate the shortage of water resources and reduce drought losses in western China by using low-frequency and intense sonic rain enhancement technology to actively utilize abundant atmospheric water resources and increase regional precipitation. This study introduces the principle of low-frequency and intense sonic rain enhancement technology using acoustic cloud water resources, and analyzes its rain enhancement effect and ecological and economic benefits by taking the acoustic rain enhancement …

Learning From “Nature-Based Solutions” To Promote Optimal Management Of Integrated Ecological Conservation And Restoration In Qinghai-Xizang Plateau, Jun Wang, Bojie Fu, Xiao Zhang, Yanxu Liu, Wenwu Zhao

Bulletin of Chinese Academy of Sciences (Chinese Version)

The Qinghai-Xizang Plateau plays an important role as an ecological security barrier for China and the world, where the ecological environment has generally improved in recent years. Nevertheless, the Qinghai-Xizang Plateau still faces management challenges in dealing with the three relationships, namely, key problems and coordinated governance, natural recovery and artificial restoration, and high-quality development and high-level protection. This study proposes the application of “Nature-based Solutions” for adaptive management, including the implementation of ecological protection and restoration planning based on the “three-scale framework”, the ecological protection and restoration projects adaptation management under climate change and human disturbance based on quantitative …

Deep Integration Of Technological Innovation And Industrial Innovation In Modern Industrial System: Inspiration From Global New Generation Lithography Systems, Jiang Yu, Feng Chen, Yue Guo

Bulletin of Chinese Academy of Sciences (Chinese Version)

Utilizing technological innovation to lead the construction of a modern industrial system is a strategic choice for seizing the opportunities of the new round of technological revolution and industrial transformation. It is also a necessary step for winning the strategic initiative towards high-level self-reliance and self-improvement. Technological innovation is the intrinsic driving force behind industrial innovation, and industrial innovation is the value embodiment of technological innovation. The deep integration of technological innovation and industrial innovation is the key to constructing and improving a modern industrial system. Taking the global extreme ultra-violet (EUV) lithography system as an example, based on the …

Empowering Traditional Industries With Digital Intelligence For Transformation And Upgrading, Jiyuan Zang, Huanyong Ji, Qingxue Huang

Bulletin of Chinese Academy of Sciences (Chinese Version)

Traditional industries are the basic support and driving force for the high-quality development of the economy. Digital intelligence is an important lever for traditional industries to achieve the transformation of old and new kinetic energy and the leapfrogging of the global value chain. This study firstly deconstructs the rich connotations of digital intelligence from the perspectives of digitalization, networkization, and intelligentization. Secondly, it analyzes the transformation mechanism and various pathways through which digital intelligence impacts traditional industries. Thirdly, it analyzes the barriers faced by traditional industries in the process of adopting digital intelligence technologies. Finally, this study puts forward four …

Insights On Strategy And Approach For China To Construct A Modern Integrated Circuits Industrial System, Ximing Yin, Beibei Zhang, Tailun Chen, Jiang Yu, Jin Chen

Bulletin of Chinese Academy of Sciences (Chinese Version)

The integrated circuit (IC) industry is highly complex and systematic, and its key core technology breakthroughs are highly dependent on the support of systematic capabilities. The West especially the United States has accelerated the promotion of the “small-yard, high-fence” strategy, the “New Washington Consensus”, the “de-risking”, and other systematic policies to curb China’s rise. China’s IC industry chain is facing extreme risks such as rupture or blockage. Meanwhile, facing the new mission and requirements of Chinese modernization and new-quality productivity, China needs to accelerate the modernization of the IC industry with new development paradigms, new strategies, and new approaches. Based …