Digital Commons Network^™

Multi-Round Diverting Fracturing Technology For Deep-Seated Thin Coal Seams And Its Application: A Case Study Of The G3-1 Well Group In The Yichuan Block, Ordos Basin, Li Shuguang, Nie Zhihong, Ji Liang, Zhou Changhui, Bai Kunsen, Huang Li, Zhen Huaibin, Xing Xuejie, Zhao Haifeng

Coal Geology & Exploration

Objective Deep coal seams in the Yichuan block of the Ordos Basin are characterized by small thicknesses, vertical multi-layer superimposition, and strong vertical and horizontal heterogeneities. When used to develop these coal seams, multi-stage horizontal well fracturing faces challenges such as uneven fracture propagation across various stages in the horizontal direction and a low production degree of multiple coal seams in the vertical direction, complicating commercial exploitation. To address these issues, this study proposes a multi-round diverting fracturing technology based on a vertical cluster well group. In this technology, vertical layered fracturing using vertical cluster wells is employed to achieve …

Scaling And Blockage In Deep Coalbed Methane Wells: Mechanisms And Countermeasures, Zhang Lei, Chen Ming, Zhen Huaibin, Zeng Wenting, Hao Pengcheng, Hou Wei, Yin Decai, Zhang Kang, Liu Chuanqing, Tian Zhida, Liu Qihu, Wang Qian, Xiong Wei, Sun Weiwei, Xia Fei, Wang Chunyan

Coal Geology & Exploration

Background The exploitation of deep coalbed methane (CBM) is accompanied by continuous pressure drawdown. In this case, scaling and blockage are prone to occur in systems where formation water with high total dissolved solids (TDS) and high-concentration CO₂ coexist. In the middle to late production stage, the blockage of both wellbore and flow pathways in reservoirs frequently leads to abrupt declines in gas production and bottomhole pressure or even induces the shutdown of natural flowing production, severely restricting the stable production of deep CBM wells. Methods This study investigated the Daning-Jixian block in the eastern Ordos Basin. Using multiple …

Technology Roadmap And Countermeasures For Lean Development Of Low-Grade Deep Coalbed Methane: A Case Study Of The Linxing-Shenfu Block, Ordos Basin, Wu Guang’Ai, Xing Xuesong, Wu Jianshu, Zhu Ying, Zi Jingyu, Wang Zhi, Hou Yanan, Cheng Yuxiong, Liu Xin

Coal Geology & Exploration

Background Accelerating deep coalbed methane (CBM) exploitation is a strategic initiative for the energy security and energy mix optimization of China. The Linxing-Shenfu block in the Ordos Basin holds considerable resource potential of deep CBM. However, this block exhibits typical geological characteristics of low-grade deep CBM, including the complete absence of free gas, gas content < 14 m³/t, reservoir permeability < 0.1 × 10⁻³ μm², and strong heterogeneity. These characteristics lead to low efficiency of conventional development models. Therefore, there is an urgent need to develop an efficient technical system tailored to these characteristics. Method To address the core contradiction between reservoir …

Numerical Simulation Of Stress Shadow Effect And Cluster Spacing Optimization For Multi-Cluster Fracturing In Deep Coalbed Methane Horizontal Wells, Guo Guangshan, Deng Zhiyu, Sun Le, Pu Yifan, Wu Jian, Tao Shu, Chen Shaojuan, Chen Shida

Coal Geology & Exploration

Purpose Multi-stage, multi-cluster fracturing in horizontal wells represents a key technique for deep coalbed methane (CBM) recovery and the sustainable development of the industry. However, during multi-cluster fracturing in deep CBM horizontal wells, the stress shadow effect tends to induce non-uniform fracture propagation and a limited stimulated reservoir volume (SRV). Methods To address these challenges. this study established a two-dimensional (2D) numerical model for multi-cluster hydraulic fracturing in horizontal wells using the finite element method. Then, it systematically analyzed the impacts of in situ stress and cluster spacing on both the stress shadow effect and the competitive propagation of hydraulic …

Fracturing With Three-Dimensional Full-Scale Fracture Network Propping For Deep Coalbed Methane Reservoirs: A Novel Ceramic Micro-Proppant And Its Verification Through Numerical Simulations, Li Xiang, Xu Jun, Li Ting, Zhang Xiaoyu, Yang Bo

Coal Geology & Exploration

Objective and Methods Conventional fracturing struggles to achieve the long-term effective propping of complex fracture networks during the development of deep coalbed methane (CBM) reservoirs. To address this challenge, this study developed a novel ceramic micro-proppant suitable for the volumetric microfracture propping and, through numerical simulations, verified its performance when it was applied to reservoir stimulation in conjunction with the technology of fracturing with three-dimensional full-scale fracture network propping. First, a novel ceramic micro-proppant with a core-shell structure was designed according to the requirements of microfracture propping. Its key properties, including compressive strength, settling behavior, hydraulic conductivity, and stability, were …

A Spatiotemporal Surrogate Model And Multi-Objective Optimization For Multi-Well Coalbed Methane Production, Qin Yuancheng, Wang Mengyi, Wang Yanfeng, Li Yuan, He Bo, Fang Junling, Duan Qingshan, Liu Chen

Coal Geology & Exploration

Objective and Methods In the full-lifecycle optimization of multi-well and long-term coalbed methane (CBM) production, conventional numerical simulation methods face challenges including extremely high computational costs and difficult multi-objective trade-offs. To address these issues, this study proposed a spatiotemporal surrogate model for multi-objective optimization of CBM production. First, a heterogeneous reservoir model involving 17 production wells was constructed based on high-fidelity numerical simulation, and a sample dataset was created by applying random perturbations to the baseline production scheme. Second, a hybrid surrogate model integrating a convolutional neural network (CNN) and a Transformer decoder was established. The CNN was utilized for …

Numerical Simulation And Process Optimization Of Multi-Round Fracturing In Deep Coalbed Methane Wells In The Linxing-Shenfu Block, Li Yu, Zhang Liang, Li Yunyun, An Qi, Feng Xuesong, Lan Tian, Yu Ji, Liu Xin

Coal Geology & Exploration

Objective Deep coalbed methane (CBM) holds considerable resource potential. However, deep CBM reservoirs exhibit high in-situ stresses, while deep coals feature strong plasticity and heterogeneity. These characteristics render it challenging to generate complex fracture networks through conventional fracturing, thus restricting the large-scale commercial development of deep CBM resources. Multi-round fracturing enables fracture initiation, propagation, and propping through sequential cycles of fracturing fluid injection, pump shut-in, and injection. By constantly changing near-wellbore stress fields, this technique facilitates the formation of complex fracture networks and ensures uniform reservoir stimulation. Method Using the finite-discrete element method (FDEM), this study established a numerical model …

From Source To Sip: Exploring South Dakota’S Water Values, Sushant Mehan, Robert E. Dalton, Jeremiah Bergstrom, Kayode Adebayo, Kellie Kolb, Peggy Schlechter

Journal of Contemporary Water Research and Education

Water guides South Dakota’s economy, ecosystems, and quality of life, yet there is limited empirical evidence on how residents understand water issues, what concerns they prioritize, and how they assign responsibility for water protection. This study examines public water knowledge, key water concerns, preferred management actions, and perceptions of responsibility for safeguarding water resources in South Dakota. We administered the South Dakota Water Resources Survey from July 2024 to August 2025, with responses from 461 adults across rural and urban communities. The instrument captured demographic characteristics and perceptions related to water knowledge, concerns, actionable items, and responsible parties. We analyzed …

Cognitive Impairment In Idiopathic Intracranial Hypertension: A Conceptual Framework And Therapeutic Implications, Brandon Shin, Vishnu Achyuth Suresh, Nicholas Borg

Student Publications

Background: Cognitive impairment is an increasingly recognized but poorly understood manifestation of idiopathic intracranial hypertension (IIH). Although deficits in attention, executive functioning, memory, processing speed, and reaction time have been reported, the characteristics, trajectory, and underlying mechanisms of cognitive dysfunction remain incompletely defined. Interpretation of the literature is limited by heterogeneity in study design, variability in neurocognitive assessment methods, and the absence of standardized cognitive outcome measures. Consequently, cognitive morbidity is overlooked in clinical practice and is not incorporated into treatment decision-making, which remains centered around visual outcomes and papilledema.

Methods: In this narrative review, we synthesize evidence from IIH …

A Hypothalamic Neuronal Population Coordinates Metabolic Adaptations To Cold, Fuhui Wang, Jinjing Jian, Yongxiang Li, Kristine M Conde, Mengjie Wang, Yue Deng, Yuxue Yang, Tong Zhou, Jingjing Cheng, Yutian Liu, Meixin Sun, Xinming Liu, Jiamin Qiu, Xi Wu, Lamei Xue, Qingchun Tong, Benjamin R Arenkiel, Mingshan Xue, Huxing Cui, Tzu-Chiao Lu, Yanyan Qi, Hongjie Li, Chunmei Wang, Yang He, Yongjie Yang, Longlong Tu, Yong Xu

Faculty, Staff and Students Publications

Cold exposure increases feeding, thermogenesis, and energy expenditure to maintain body temperature and energy balance, but the underlying neural mechanisms remain unclear. Here, we identify cold-responsive neurons in the dorsal posterior periventricular hypothalamus that coordinate these adaptations. Activation of GABAergic or cold-activated neurons increased food intake, body temperature, and brown adipose tissue thermogenesis, whereas their inhibition attenuated cold-induced hyperphagia and thermogenesis. Single-nucleus RNA sequencing identified Lef1 as a marker of cold-activated neurons in this region. Activation of Lef1+ neurons recapitulated key cold responses, whereas silencing attenuated them. Lef1 positively regulated Kcnk2, which encodes the cold-sensitive potassium channel TREK-1. Cold …

Board Of Trustees Agenda, Sep. 25, 2026, Indiana State University Board Of Trustees

Board of Trustees

Indiana State University Board of Trustees meeting agenda

Therapeutic Outcomes Of Oral Antibiotics For The Treatment Of Methicillin-Resistant Staphylococcus Aureus Urinary Tract Infections: A Multisite, Retrospective Cohort Study Of Linezolid, Trimethoprim–Sulfamethoxazole And Doxycycline, Ryan Mccall, Elena Gatskevich, Steven E. Fiester, Michael Floren, Elisabeth Chandler

Chemistry Publications

Background: Methicillin-resistant Staphylococcus aureus (MRSA) urinary tract infections (UTIs), while relatively uncommon, pose a unique challenge in treatment as only specific intravenous (IV) options are typically utilized, with the efficacy of oral antimicrobials being poorly defined. Methods: The multi-site retrospective cohort study described herein therefore aims to characterize outcomes associated with oral administration of linezolid, trimethoprim-sulfamethoxazole (TMP-SMX), or doxycycline for the treatment of MRSA UTIs. Study participants were adults with culture-positive MRSA UTIs receiving one of the three oral therapies. Exclusion criteria included polymicrobial UTI, concomitant MRSA outside the urinary tract, receipt of non-study anti-MRSA agents for greater than or …

Why Do Indonesians Travel Abroad For Medical Treatment? A Qualitative Phenomenological Study, Lucky Sarjono Buranda, Aries Wahyuningsih, Steven Busby

Journal of Indonesian Health Policy and Administration

More than one million Indonesian citizens travel abroad for medical treatment each year, generating financial transactions exceeding IDR 180 trillion (USD 11.5 billion). This study aimed to explore the reasons why Indonesians seek medical treatment overseas. A qualitative phenomenological approach was employed using in-depth interviews with Indonesian citizens who had received or were currently receiving medical treatment outside Indonesia. All interviews were recorded, transcribed, and analyzed through coding to identify themes, subthemes, and related properties. Interviews were conducted with 18 participants from three major Indonesian cities (Makassar, Surabaya, and Batam), as well as individuals receiving treatment in Singapore and Malaysia. …

Oral Health Provider's Perspective: The Impact Of Public Health Programs Improving Patients' Access In Marginalized Communities, Bridgette Long Hickey

Walden Dissertations and Doctoral Studies

Access to public oral healthcare in Alabama’s Black Belt Region has been a persistent systemic challenge for working poor adults ages 19–64. This population continues to face barriers to oral healthcare because of socioeconomic disparities, geographic isolation, lack of insurance, provider shortages, limited infrastructure, and the need to travel long distances for quality or specialized services. This study investigated whether public health programs have improved access to oral healthcare for working poor adults in rural communities, from the perspective of oral healthcare providers. The Social Ecological Model served as the theoretical framework. Data were collected through semi-structured interviews with 13 …

Sustaining Small Tutorial, Coaching, And Shadow Education Operations In Nigeria, Adeyinka Adebose Dawodu

Walden Dissertations and Doctoral Studies

Some tutorial and training center managers lack effective strategies effective business sustainability strategies, resulting in poor performance and reduced profitability. Tutorial business stakeholders realize that failure of these centers creates a loss of opportunities for Nigerian youth who depend on their training and preparatory services. Grounded in the performance prism framework, the purpose of this qualitative multiple case study was to identify and explore effective strategies that Nigerian Tutorial/training center managers use to sustain their centers beyond 5 years. The participants were six managers of tutorial/training business centers who have sustained their centers in nonaffluent areas of Lagos and Ogun …

Medical School Admissions Officers' Perceptions On Lower Admissions Rates Of Black Applicants In Georgia, Wanda Sebrena Thomas

Walden Dissertations and Doctoral Studies

The problem addressed through this study was the disproportionate lower admission rates of Black students compared to their White counterparts at a Georgia medical school. Grounded in Bourdieu’s theory of social reproduction, the purpose of this study was to explore admission officers’ perceptions on the factors contributing to lower admission rates of Black applicants at a Georgia medical school. For this basic qualitative design, semistructured interviews with 10 admissions officers were conducted. Through Saldaña’s first- and second-cycle coding procedures, the following nine themes emerged: (a) Medical College Admission Test scores create barriers for Black applicants; (b) unequal educational resources and …

Journal Staff

Duke Law Journal

No abstract provided.

Mapping Coastal Community-Based Tourism Empowerment: Public Policy And Sustainable Development On Bangka Island, Putra Pratama Saputra, Hadiyanto Abdul Rachim, Arie Surya Gutama, Moch. Zaenal Hakim

Jurnal Wacana Politik

This study analyzes the conceptualization and practice of community-based tourism empowerment on Bangka Island, serving as a strategic approach to promote sustainable and inclusive coastal tourism. Employing a qualitative descriptive approach, data were gathered through interviews with nine key informants, observations, and policy document analysis. Findings reveal that these empowerment initiatives significantly strengthen individual and institutional capacities, enhance community participation in tourism planning, and drive economic diversification from extractive industries to sustainable tourism. Furthermore, this approach facilitates economic transformation through the development of micro, small, and medium enterprises (MSMEs) and coastal ecotourism, concurrently reinforcing environmental conservation and cultural preservation. However, …

Developing A Climate-Adaptive Public Service Framework For Sustainable Agriculture: Preliminary Evidence From A Disaster-Prone Village In Indonesia, Susila Susila, Rizky Aditya Surya Pratama, Muhammad Daud Yusuf, Diah Apriliani

Jurnal Wacana Politik

Artikel ini bertujuan mengkaji bagaimana pelayanan publik tingkat desa dapat diintegrasikan dengan Climate-Resilient Agriculture (CRA) untuk mendukung kapasitas adaptasi petani di kawasan rawan bencana hidrometeorologi di Jawa Barat, Indonesia, serta mengidentifikasi dimensi kandidat bagi kerangka Climate-Adaptive Public Service for Sustainable Agriculture (CAPSSA). Menggunakan desain studi kasus kualitatif eksploratif yang dilandasi tinjauan literatur terstruktur dan analisis dokumen kebijakan, penelitian ini menghimpun wawancara semi-terstruktur dengan empat informan di Desa Cibiru Wetan, Kecamatan Cileunyi, Kabupaten Bandung—Kepala Desa, Kepala Dusun, Ketua RW, dan anggota kelompok tani setempat—disertai kajian dokumen kebijakan kebencanaan dan pertanian tingkat kabupaten dan provinsi yang tersedia untuk publik. Analisis awal menemukan …

Pyrolysis Of Biomass Feedstocks For Hydrogen-Enriched Syngas Production: Cold Gas Efficiency Modelling, Latin Hypercube Uncertainty Analysis, And Parametric Stress Analysis, Hadi Taghavifar, Thomas Allison, Hao Chen, Dibyendu Roy, Abdullah Malik, Yaodong Wang, Anthony Paul Roskilly, K.V. Shivaprasad

School of Engineering, Computing and Mathematics

Biomass-derived syngas offers a viable pathway for producing renewable, hydrogen-rich fuel gas. However, its conversion performance is influenced by feedstock type, temperature, feed rate, and moisture content. This study develops a Cold Gas Efficiency (CGE) model for four agricultural feedstocks: wheat, barley, oilseed rape, and beans. Temperature-dependent regression correlations are developed for the main syngas components and gas flow rate using experimental data. Results show that CGE is highly sensitive to temperature, with low-temperature stress (0–5th percentile) reducing mean CGE by up to 22%. High-moisture stress (95–100th percentile) produced an even larger decline, lowering mean CGE from ∼44% to ∼35% …

The Role Of Producer And Operation Characteristics In Organic Production Adoption Decisions, Salma Shrity, Kynda R. Curtis

All Current Publications

Survey data were used to examine producer and farm or operation characteristics, as well as producer attitudes and concerns related to producing and selling organic products that may affect decisions to use organic production methods. This fact sheet discusses the study results related to the producer and operation characteristics that may or may not impact the adoption of organic production methods. The study findings provide valuable information for designing targeted Extension programming, educational resources, and technical assistance that address the needs of different producer groups. By understanding which producer and operation characteristics are associated with organic adoption, organizations can better …

The Impact Of Producer Attitudes And Concerns On Organic Adoption Decisions, Salma Shrity, Kynda R. Curtis

All Current Publications

Researchers analyzed survey data to identify producer and operation characteristics, attitudes, and concerns that may influence decisions to adopt organic production methods. This fact sheet presents findings related to producer perceptions of organic production, market opportunities, and certification requirements, including factors that may encourage or discourage adoption of organic practices. The results provide insights to guide Extension educators, agricultural service providers, and organizations in developing targeted educational programs, technical assistance, and resources to support producers interested in organic agriculture.

Digital Infrastructure For The Inclusion Of Small And Medium Enterprises (Smes) In Design For Distributed Manufacturing And Assembly Construction Ecosystems, Alejandro Veliz Reyes, Duhan Olmez, Alastair Parvin, Clayton Prest, Gabriele Granello, Amber Richardson, Alex Tempest, Kester Hoefkens, Louisa Knowles, Silas Fowler

School of Art, Design and Architecture

The construction sector faces growing pressure to meet net-zero targets while addressing skills shortages, fragmented supply chains, and the limited participation of Small and Medium-Sized Enterprises (SMEs), despite SMEs delivering most UK construction output. Existing centralised models of Modern Methods of Construction (MMC) often exclude SMEs, highlighting the need for alternative approaches that support inclusive, low-carbon industrial transformation. This paper presents a Design for Distributed Manufacturing and Assembly (DfDMA) framework that develops the shared digital and organisational infrastructure required for SME participation in timber-based MMC. Using a mixed-method approach combining co-design, research-in-residence, prototyping, and a full-scale demonstrator, the study developed …

Access In Teaching Stem Subjects To The Blind, Ashley E. Neybert

Journal of Science Education for Students with Disabilities

There are still many gaps in the literature regarding the difficulties faced by instructors of students who are blind and low vision and who teach Science, Technology, Engineering, and Math (STEM) subjects. We surveyed 26 K-12 STEM teachers about accessible materials they are aware of versus which accessible materials they use in their classrooms, their thoughts on how common challenges identified in the extent literature affect them in their teaching, and their perspective on how much extra time may be required for blind and low vision students (if any) to effectively learn STEM subjects.

Selections From American Poetry League Bulletin, Fall 1973, Lydia O. Jackson, American Poetry League

Lydia O. Jackson Papers

A selection of pages from the Fall 1973 issue of the American Poetry League Bulletin. Included is the bulletin cover, title page, Lydia O. Jackson’s poem, “Books,” and an anonymous article, “A Brief History of the American Poetry League from 1922 to 1964.” The American Poetry League (APL) was first founded in 1922 as the Midwest Poetry League. Jackson was a member of the APL and frequently published poems in the Bulletin. Her collection includes dozens of issues of the Bulletin, as well as related organizational materials. Her poem, “Books,” expresses her love of books and reading.

Transforming Military Spectrum Management With Spectrack, Rachel Mccoy, Rafa Gould, Abby Fornadel

James Madison Undergraduate Research Journal (JMURJ)

The U.S. military faces operational and financial challenges due to inefficient electromagnetic spectrum
management. This poster and accompanying research statement introduce our minimum viable product, SpecTrack, which we created in response to a challenge presented by the U.S. Department of Defense's Joint Spectrum Agency. SpecTrack centralizes and visualizes spectrum requests to offer insights, streamline communication, and reduce costs. It integrates with current tools like Spectrum XXI and HUNSWDO while enhancing usability through a visual Common Operating Picture (COP). Our user-centered design process included stakeholder interviews and site visits to Germany. The result: a scalable platform that modernizes and simplifies military …

Using Digital Engagement Methods To Balance Democracy And Efficiency In Public Decision Making, Catherine Zietse

PNHA Review

At the bedrock of our democratic society is the active participation of everyday people in shaping public affairs. Local governments seek to build inclusive and democratic processes for decision making, while at the same time being good stewards of scarce resources to efficiently address immediate needs of the community. This paper explores the role of digital engagement in balancing democracy and efficiency in public decision-making by looking at both theory and practice. Academic literature and case studies from the field show that technology and digital engagement platforms do not circumvent the risks of traditional engagement methods but provide both opportunities …

Fitness Standards For Police, Kam Robles

PNHA Review

This research addresses the inherent stressors within police work and the health and wellness problems prevalent among law enforcement officers. Police officers are at a higher risk of many of the health concerns currently plaguing the population of the already unhealthy United States. Of particular note is that back injury and pain stands out as potentially the most prevalent among the health issues experienced by law enforcement personnel. Worsening this fact is the recent trend of law enforcement administrators shying away from the issue of the unhealthy employees of law enforcement agencies. The solution of implementing widespread voluntary physical fitness …

Social Innovation As A Catalyst To Achieving The United Nations Sustainable Development Goals (Sdgs), Patricia Okolo

PNHA Review

This research explores the re-shaping role of social innovation in advancing the Sustainable Development Goals (SDGs), developed by the United Nations in 2015. In the midst of global challenges such as poverty, inequality, and climate change, this research examines social innovation as an important mechanism for achieving sustainable development. The article highlights the significant contributions of social innovation across various sectors, emphasizing its ability to address unmet social needs, promote environmental sustainability, and foster economic development. It identifies critical factors for the success of social innovation, including community involvement, scalability, access to resources, and supportive policy environments, and highlights the …

The Psychology Of Healthy Aging: A Blend Of Cognitive And Behavioral Aspects For Staying Healthy, Esther B. Noah

PNHA Review

Human life expectancy has increased in most parts of the world with a noticeable demographic shift toward a larger population of older adults. This increase and shift have created an unexpected gap in our healthcare system and society. With these changes, how can older adults be guaranteed increased longevity, quality of life, and a healthy life span? This article explores the psychology of healthy aging, emphasizing that proactive health management plans and positive health behaviors contribute to healthy aging among the older adult population. While primary data collection through interviews was conducted to support the study, the analysis primarily relies …