Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Physical Sciences and Mathematics

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 271 - 300 of 294523

Full-Text Articles in Entire DC Network

Artificial Intelligence For Scientific Research: Strategic Landscape And Development Recommendations, Jiaofeng Pan, Feng Zhang, Jing Wu Oct 2026

Artificial Intelligence For Scientific Research: Strategic Landscape And Development Recommendations, Jiaofeng Pan, Feng Zhang, Jing Wu

Bulletin of Chinese Academy of Sciences (Chinese Version)

Artificial intelligence is currently driving the evolution of scientific research toward a “fifth paradigm” characterized by intelligence. Major global economies are elevating the integration of AI into scientific research (AI for Science, AI4S) to the level of national strategy, rapidly rolling out strategic plans and policy measures amidst intensifying global strategic competition in this field. Based on analyzing the typical paradigms and strategic value of AI4S, this study examines the global strategic landscape by focusing on major economies such as the United States, the European Union, and Japan; compares and analyzes their policy frameworks regarding organizational coordination, platform development, and …

Go to article

Two Modes Of Sustainable Development Transition, Shuai Zhang, Dajian Zhu Oct 2026

Two Modes Of Sustainable Development Transition, Shuai Zhang, Dajian Zhu

Bulletin of Chinese Academy of Sciences (Chinese Version)

Sustainable development has become a global consensus. Every country should carry out sustainable development transition. Due to large differences in development stages and the ecological impacts imposed on the Earth, developed countries and developing countries ought to adopt different modes of sustainable development transition. By using the Doughnut model as an analytical tool, which has made a significant impact at the forefront of sustainable development research, this paper thoroughly discusses the two modes of sustainable development transition. The Transition Mode of Developed Countries (Mode B) refers to transition from the outer circle to the middle circle of the Doughnut model. …

Go to article

Resource Security Research In China In The New Era: Evolving Concepts, Paradigm Shifts, And Strategic Pathways, Dong Jiang, Jinwei Dong, Yanzhao Yang, Jingying Fu Oct 2026

Resource Security Research In China In The New Era: Evolving Concepts, Paradigm Shifts, And Strategic Pathways, Dong Jiang, Jinwei Dong, Yanzhao Yang, Jingying Fu

Bulletin of Chinese Academy of Sciences (Chinese Version)

Resource security serves as a critical foundation for safeguarding national security and underpinning high-quality socioeconomic development. Major geopolitical conflicts, such as the Russia–Ukraine conflict and the US-Israeli strikes on Iran, have intensified turbulence across global resource supply chains, positioning resource security as a central arena of strategic competition among nations. As a major consumer and trading power in global resource markets, China faces persistently high import dependence for critical mineral resources, and the pressure to ensure resource security amid the pursuit of high-quality development continues to mount. Against this backdrop, resource security is evolving from a narrow focus on supply …

Go to article

Progress, Challenges, And Policy Recommendations For China’S Climate Investment And Financing Pilot Zones In Context Of Carbon Neutrality, Xianchun Tan, Zhaoyang Deng, Chenxu Wang, Zhe Peng Oct 2026

Progress, Challenges, And Policy Recommendations For China’S Climate Investment And Financing Pilot Zones In Context Of Carbon Neutrality, Xianchun Tan, Zhaoyang Deng, Chenxu Wang, Zhe Peng

Bulletin of Chinese Academy of Sciences (Chinese Version)

To implement the decisions and arrangements of the Central Committee of the Communist Party of China and the State Council on addressing climate change and to channel more capital toward climate action, China launched its first batch of 23 climate investment and finance pilot areas in 2022. Through the end of 2025, this study tracks and assesses of pilot development, synthesizes innovative models, identifies major challenges, and proposes policy recommendations. The results show that the pilot areas have made solid progress, with more than 260 supporting policy documents issued and over 6 300 projects, representing total planned investment exceeding RMB …

Go to article

Toward 2035: 20 Fundamental Scientific Problems In Artificial Intelligence, Working Group For Artificial Intelligence Advancement Chinese Academy Of Sciences Oct 2026

Toward 2035: 20 Fundamental Scientific Problems In Artificial Intelligence, Working Group For Artificial Intelligence Advancement Chinese Academy Of Sciences

Bulletin of Chinese Academy of Sciences (Chinese Version)

The development of the artificial intelligence （AI） discipline is effectively expanding the capability boundaries of AI. To explore the foundational theories and underlying core technologies for next-generation of general AI, the Chinese Academy of Sciences (CAS) has formulated 20 fundamental scientific problems in AI. Centered on “disciplinary reconstruction of AI foundational theories (Y+AI)” and “AI-enabled applications of complex systems across multiple domains (AI+X)”, these problems are characterized by multiple complexities including openness, high dimensionality, high dynamism, large scale, and cross-scale properties.

Go to article

Constructing The Cyber Workforce Gap: Measurement And Its Consequences, Ryan Straight Oct 2026

Constructing The Cyber Workforce Gap: Measurement And Its Consequences, Ryan Straight

Journal of Cybersecurity Education, Research and Practice

Cyber workforce-gap figures steer federal strategy, industry advocacy, and the growth of educational programs. Rather than estimating the U.S. gap, this review examines how the estimates are made: through job-posting analytics, survey-based estimation, and federal accounting, each of which must assume its way from instrument to labor market. A census of this journal's complete run illustrates what those figures underwrite in one venue: of 176 items published across eleven years, 51 invoke a labor-market workforce claim, 46 treat it as settled fact, and only one, an editorial, interrogates it. Meanwhile, the producers and auditors of those figures have diverged. Between …

Go to article

Repeated Games In The Presence Of Incomplete Information, Reza Habibi Oct 2026

Repeated Games In The Presence Of Incomplete Information, Reza Habibi

The Journal of Economics and Politics

There are many strategic situations at which a game theoretical framework should be used to analyze the equilibrium decisions at which the incomplete information annoy the process of deriving the certain rules for making decisions. In these cases, players use signals of each other's to get proper decisions. For example, in economic environment, some macro-economic latent variables induce incomplete information. Morris and Shin (2000) referred this type of game as global game and studied one-shot type of it. However, in practical situations, it is a type of repeated game. In the current paper, following notations of Morris and Shin (2000), …

Go to article

Specification And Internal Assessment Of A Self Reported Protective Application Use Composite Among Computer Science Undergraduates In Enugu State Nigeria, Adesegun Nurudeen Osijirin, Leonard C. Anigbo, Oliver Okechukwu Oct 2026

Specification And Internal Assessment Of A Self Reported Protective Application Use Composite Among Computer Science Undergraduates In Enugu State Nigeria, Adesegun Nurudeen Osijirin, Leonard C. Anigbo, Oliver Okechukwu

Journal of Cybersecurity Education, Research and Practice

This study specifies a Protective Application Use Composite restricted to self-reported protective application use. A cross-sectional survey provided 364 complete records from Computer Science undergraduates at four universities in Enugu State, Nigeria, from 393 distributed questionnaires. The score is the equal-weight average of five questionnaire categories: antivirus, firewall, encryption, multi-factor authentication, and virtual private network use. Reanalysis of the author-supplied item records yielded category means from 2.097 to 2.376 and internal-consistency coefficients from 0.958 to 0.971. The composite mean was 2.170, with a standard deviation of 0.469. The first component of the category-score correlation matrix explained 50.98 percent of variance. …

Go to article

Markets For Unverified Capability: Why Organizations Facing Real Adversarial Scrutiny Reject The Metrics Academic Ai-Security Research Relies On, Babar Khan Akhunzada Oct 2026

Markets For Unverified Capability: Why Organizations Facing Real Adversarial Scrutiny Reject The Metrics Academic Ai-Security Research Relies On, Babar Khan Akhunzada

Journal of Cybersecurity Education, Research and Practice

Governments, insurers, and defenders increasingly rely on published capability claims about AI cybersecurity agents to inform procurement, regulation, and risk assessment. Yet a striking pattern runs through the organizations with the most at stake: enterprises and technology companies deploying frontier AI agents against real production infrastructure consistently decline to publish the accuracy metrics that academic and vendor benchmarks compete to report. This paper investigates that pattern as an economic, organizational, and policy problem rather than a purely technical one. We audit eleven independently published AI cybersecurity benchmarks and deployments using a five-dimension integrity rubric and find that benchmarks relying on …

Go to article

Swaag Award Press Release, Arkansas State University - Jonesboro Oct 2026

Swaag Award Press Release, Arkansas State University - Jonesboro

Study Abroad - Dominica 2026

Jessica Harvey won first place in the undergraduate paper category at the annual Southwestern Division American Association of Geographers (SWAAG).

Go to article

Agrivoltaics: Combining Food And Solar Power On Agricultural Lands, Dharla Soteros, Kendall Becker, Spencer J. Good, Ngoni Mufute, Matt Yost, Logan Mitchell, Scott Hotaling Oct 2026

Agrivoltaics: Combining Food And Solar Power On Agricultural Lands, Dharla Soteros, Kendall Becker, Spencer J. Good, Ngoni Mufute, Matt Yost, Logan Mitchell, Scott Hotaling

All Current Publications

Utah’s ranchers and farmers face pressure to sell land to developers, conserve water, and manage increasing production costs (Li et al., 2019). One way producers can keep growing food while diversifying and increasing revenue is by integrating agriculture and solar electricity generation on the same land, a practice known as agrivoltaics. In this fact sheet, the authors describe agrivoltaic setup options, summarize agrivoltaics' impacts on livestock and crop production, and discuss implementation economics.

Go to article

Wilson's Phalarope, A Migratory Bird, Depends On The Declining Great Salt Lake, William Christenson, Kendall Becker, Spencer J. Good, T.J. Clark-Wolf, Scott Hotaling Oct 2026

Wilson's Phalarope, A Migratory Bird, Depends On The Declining Great Salt Lake, William Christenson, Kendall Becker, Spencer J. Good, T.J. Clark-Wolf, Scott Hotaling

All Current Publications

This fact sheet describes how declining water levels and increasing salinity degrade habitat for brine flies and other prey Wilson’s phalaropes rely on. Because human use drives low water levels, changes to water management could reverse the lake’s decline and improve habitat quality for Wilson’s phalaropes and other species that depend on the Great Salt Lake.

Go to article

Final Quarterly Operations And Maintenance Report: Butte Treatment Lagoon System – First Quarter 2026, Pioneer Technical Services, Inc. Oct 2026

Final Quarterly Operations And Maintenance Report: Butte Treatment Lagoon System – First Quarter 2026, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Go to article

Research On Data Risk And Governance Of Generative Artificial Intelligence Empowering Intelligence Work, Yonghui Guo, Xiaobei Guo, Yuan Feng, Yapeng Li Oct 2026

Research On Data Risk And Governance Of Generative Artificial Intelligence Empowering Intelligence Work, Yonghui Guo, Xiaobei Guo, Yuan Feng, Yapeng Li

Journal of Scientific Information Research

[Purpose/significance] Generative Artificial Intelligence（GAI）generates numerous data risks in the process of empowering intelligence work. Fully understanding, identifying, and governing the data risks are the key to the effective empowerment of intelligence work by GAI. [Method/process] Based on the four stages of intelligence work, this paper subdivides the main data activities in intelligence work empowered by generative artificial intelligence from the perspective of the data workflow. Based on risk management theory, the data risks in data input, data processing, data content generation and data content dissemination, are systematically analyzed and identified. From three perspectives of institution, subject, and technology, a data …

Go to article

Computing The Greatest Common Divisor Of Binomial Coefficients C(Mn, Mk), Chai Wah Wu Oct 2026

Computing The Greatest Common Divisor Of Binomial Coefficients C(Mn, Mk), Chai Wah Wu

Communications on Number Theory and Combinatorial Theory

The greatest common divisor (GCD) of C(2n,2k) for 1 ≤ k < n is known to be some power of 2 times the product of all odd primes p such that 2n = pi + pj. We complete the analysis of this GCD by showing that its 2-adic valuation is at most 1 and relates it to Mersenne primes. We also show how to efficiently compute GCD {C(mn,mk) : 1 ≤ k < n} when n and m satisfy certain conditions.

Go to article

Twinning Behavior Of Molecule-Adapted Gaussian-Type Orbitals (Gtos) In Cyclo-Hydrocarbons, Tong-Hyok Cha, Gum-Chol Kim, Kwang-Jin Ri, Jin-Nam Kim, Yong-Su Pak Oct 2026

Twinning Behavior Of Molecule-Adapted Gaussian-Type Orbitals (Gtos) In Cyclo-Hydrocarbons, Tong-Hyok Cha, Gum-Chol Kim, Kwang-Jin Ri, Jin-Nam Kim, Yong-Su Pak

Turkish Journal of Chemistry

The saturated cyclo-hydrocarbons CnH2n (n = 3–7) were constructed by the iterative coupling of the structural unit groups (SUGs), specifically the SUG-CH2C2 fragment, which was previously established for molecular basis optimization. For the McLean–Chandler 6-311+G basis set, under the SUG perturbation, the outer (s′, p′) and diffuse (sʺ, pʺ) primitive Gaussian type orbitals for the core-atom C* of SUG-CH2C2 undergo an off-center spatial displacement into a twinning configuration. Specifically, the s-type twins (s′, sʺ) share identical Gaussian exponents and are symmetrically shifted toward the two neighboring carbon atoms, while the p-type twins (p′, pʺ) exhibit a matching configuration. Generally, this …

Go to article

Phytochemical Characterization, Cytotoxic Effects, And Potential Oxidative Dna Damage-Modulating Activities Of Arum Italicum Extract, Oznour Mourat Moustafa, Hülya Yağar Oct 2026

Phytochemical Characterization, Cytotoxic Effects, And Potential Oxidative Dna Damage-Modulating Activities Of Arum Italicum Extract, Oznour Mourat Moustafa, Hülya Yağar

Turkish Journal of Chemistry

Arum italicum is traditionally utilized in the Thrace region for the treatment of hepatic and dermatological disorders; however, experimental evidence supporting these ethnopharmacological applications remains limited. As oxidative stress-induced DNA damage is an important contributor to the pathogenesis of liver and skin diseases, the aim in the present study was to investigate the ability of A. italicum leaf and tuber extracts to modulate oxidative DNA damage in vitro using nontumorigenic and cancerous hepatic and cutaneous cell models. Phytochemical profiling, antioxidant capacity, and cytotoxic activity were also assessed to support and contextualize the observed DNA damage-related effects.In vitro investigations were conducted …

Go to article

Facile One-Step Activated Glassy Carbon Electrode For Sensitive Tryptophan Sensing In Yogurt, Sevi̇lay Erdoğan Kablan, Ahmet Çeti̇nkaya, Si̇bel Özkan, Emi̇rhan Nemutlu Oct 2026

Facile One-Step Activated Glassy Carbon Electrode For Sensitive Tryptophan Sensing In Yogurt, Sevi̇lay Erdoğan Kablan, Ahmet Çeti̇nkaya, Si̇bel Özkan, Emi̇rhan Nemutlu

Turkish Journal of Chemistry

Activation of glassy carbon electrodes (GCEs) in tailored solution environments introduces oxygenated surface functionalities such as hydroxyl, carboxyl, and quinone groups. These modifications enhance electron‐transfer kinetics and strengthen interactions with target analytes, thereby improving electrochemical sensitivity. In this study, square-wave voltammetry was used, and the most suitable supporting electrolyte for tryptophan (TRP) analysis was a pH 3 Britton–Robinson buffer. The cyclic voltammetry potential range and number of cycles for the Act-GCE were obtained as 0–1.5 V and seven cycles, respectively. The activated electrode exhibited excellent analytical performance, with a linear response for TRP over 0.20–6.28 μM, a detection limit of …

Go to article

Thiophene-Carbazole-Based Covalent Organic Polymer Electrodes For Electrochromic And Supercapacitor Applications, Si̇nem Altinişik Oct 2026

Thiophene-Carbazole-Based Covalent Organic Polymer Electrodes For Electrochromic And Supercapacitor Applications, Si̇nem Altinişik

Turkish Journal of Chemistry

In this study, a thiophene-carbazole-based conjugated organic polymer was successfully synthesized on indium tin oxide (ITO)/glass and graphite sheet substrates using in situ oxidative polymerization. In terms of electrochromic properties, the electrodes exhibited significant color change from light yellow-green to dark gray in the potential range of 0 V to 1.2 V, with optical contrast ranging from 84.2% to 47.2% and coloring efficiency of 171.3 cm2/C. The prepared PCBP-Th_ITO/glass electrode also exhibited fast switching times (tb = 0.89 s and tc = 2.05 s) at 650 nm. Furthermore, 90% optical stability was maintained after 1000 cycles. In terms of energy …

Go to article

Fabrication Of Cross-Linked Thiophene-Coumarin-Fluorene Donor–Acceptor Pentamer Thin Films For Electrochromic Devices Application, Ari̇fe Aktaş, Mert Akgün, Mücahi̇t Özdemi̇r, Sermet Koyuncu Oct 2026

Fabrication Of Cross-Linked Thiophene-Coumarin-Fluorene Donor–Acceptor Pentamer Thin Films For Electrochromic Devices Application, Ari̇fe Aktaş, Mert Akgün, Mücahi̇t Özdemi̇r, Sermet Koyuncu

Turkish Journal of Chemistry

Functionalized p-conjugated polymers have emerged as promising electrochromic materials due to their well-defined molecular structures, facile synthesis, and ability to form smooth and homogeneous thin films. Furthermore, surface cross-linking enhances the mechanical and environmental stability of these films while improving their durability during electrochemical operation. In this study, a unique band gap-tunable pentamer (FBP) was developed featuring a D-A-D-A-D configuration, which includes thiophene, coumarin, and fluorene. Cross-linked films (FBPX) were obtained using both spray and electrospray methods in the presence of tetrathiol-based crosslinkers and 366 nm light, thanks to the functionalizable allyl groups present in the FBP structure. UV–Vis analysis …

Go to article

Synthesis And Catalytic Activity Of Water-Soluble Ruthenium(Ii) P-Cymene Complexes In Tandem Nitroarene Reduction/N-Methylation And Transfer Hydrogenation, Si̇nem Çakir, Serdar Batikan Kavukcu, Hayati̇ Türkmen Oct 2026

Synthesis And Catalytic Activity Of Water-Soluble Ruthenium(Ii) P-Cymene Complexes In Tandem Nitroarene Reduction/N-Methylation And Transfer Hydrogenation, Si̇nem Çakir, Serdar Batikan Kavukcu, Hayati̇ Türkmen

Turkish Journal of Chemistry

In this study, a series of water-soluble ruthenium(II) p-cymene complexes bearing carboxylic acid-functionalized ligands (Ru1–Ru3) were synthesized, fully characterized (1H NMR, 13C NMR, and FT-IR), and evaluated in two distinct catalytic transformations: tandem nitroarene reduction/N-methylation and transfer hydrogenation. Of the catalysts tested, Ru1 exhibited superior catalytic activity in both systems. Under optimized conditions (1 mol% Ru1, 8 mmol NaBH4, 110 °C, 2 h in methanol), Ru1 promoted the one-pot tandem transformation of nitrobenzene to N-methylaniline with up to 93% conversion using methanol as a sustainable C1 and H2 source. Furthermore, Ru1 proved highly effective in the transfer hydrogenation of acetophenone …

Go to article

Samarium-Doped Ceria Catalysts For Boron-Aluminum Composite Propellants: Effect Of Synthesis Method, Di̇lara Güçtaş Gürel, Mehmet Ali̇ Faruk Öksüzömer Oct 2026

Samarium-Doped Ceria Catalysts For Boron-Aluminum Composite Propellants: Effect Of Synthesis Method, Di̇lara Güçtaş Gürel, Mehmet Ali̇ Faruk Öksüzömer

Turkish Journal of Chemistry

Solid propellants based on ammonium perchlorate (AP) are widely used in rocket and missile propulsion systems due to their high energy density and reliable combustion characteristics. Although aluminum (Al) is the conventional metal fuel in AP-based formulations, boron (B) has gained increasing attention as a partial or full substitute owing to its significantly higher volumetric energy density. However, the low combustion efficiency of boron particles remains a critical challenge, making the use of catalysts essential to enhance the thermal decomposition of AP and overall propellant-burning performance. In this study, samarium-doped ceria (SDC20) catalysts were synthesized by three different methods including …

Go to article

Rapid Synthesis Of Agcu Bimetallic Nanodendrites With Enhanced Catalytic Activity For 4-Nitrophenol Reduction, Jun Liu, Hongguang Liao, Xuanyan Liu Oct 2026

Rapid Synthesis Of Agcu Bimetallic Nanodendrites With Enhanced Catalytic Activity For 4-Nitrophenol Reduction, Jun Liu, Hongguang Liao, Xuanyan Liu

Turkish Journal of Chemistry

Herein, AgCu nanodendrites were fabricated via a facile one-step displacement reaction at ambient temperature with Zn powder as the reducing agent. The morphology, structure, and composition of the products were systematically characterized by transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The results demonstrate that the structure and morphology of the catalysts are strongly dependent on the Ag/Cu molar ratio. The catalytic performance was evaluated by the reduction of 4-nitrophenol (4-NP) at room temperature, in comparison with monometallic Ag and Cu catalysts. The catalytic activity follows the order Ag1Cu1 > Ag1Cu3 > Ag3Cu1 > Ag > Cu. The optimized Ag1Cu1 catalyst achieves 98.6% …

Go to article

Effects Of Washing, Oxidation, Carboxylation, And Hydrophobicity On The Antibacterial Activity Of Graphene Oxide And Reduced Graphene Oxide, Emi̇r Boztepe, Ceren Poyraz, Ruki̇ye Taşdemi̇r, Ebru Önem, Ümran Sofu, Keri̇m Yapici Oct 2026

Effects Of Washing, Oxidation, Carboxylation, And Hydrophobicity On The Antibacterial Activity Of Graphene Oxide And Reduced Graphene Oxide, Emi̇r Boztepe, Ceren Poyraz, Ruki̇ye Taşdemi̇r, Ebru Önem, Ümran Sofu, Keri̇m Yapici

Turkish Journal of Chemistry

In this study, the effects of number of washes, oxidation degree, carboxylation, and hydrothermal reduction temperature on the antibacterial activity of graphene oxide (GO) and reduced graphene oxide (rGO) nanomaterials were investigated. GO derivatives with different numbers of washes (1–5W) and oxidation levels (3X, 6X, and 9X), carboxylated GO (GO-COOH), and rGO samples obtained at different hydrothermal reduction temperatures (100, 140, and 180 °C) were characterized by X-ray diffraction, field-emission scanning electron microscopy, Fourier-transform infrared spectroscopy, zeta potential analysis, and Raman spectroscopy, and were subsequently evaluated for antibacterial activity against gram-positive Staphylococcus aureus (S. aureus) and gram-negative Escherichia coli (E. …

Go to article

Cobalt-Substituted Hydroxyapatite As A Potential Basis Of Biomaterials: Synthesis, Crystal-Chemistry Properties And Antibacterial Activity, Maria M. Vlasova, Ksenia S. Stasenko, Evgeny Bulanov Oct 2026

Cobalt-Substituted Hydroxyapatite As A Potential Basis Of Biomaterials: Synthesis, Crystal-Chemistry Properties And Antibacterial Activity, Maria M. Vlasova, Ksenia S. Stasenko, Evgeny Bulanov

Turkish Journal of Chemistry

This paper presents the results of the synthesis of solid solutions of cobalt-substituted hydroxyapatite of the composition Ca10-xCox(PO4)6(OH)2 by the solid-phase and solution method. The formation of only the composition of Ca9.5Co0.5(PO4)6(OH)2 has been reliably established, whereas an increase in the cobalt content, as well as an increase in the temperature of synthesis and calcination of the samples prepared in solution, leads to the formation of stable mixtures of calcium and cobalt phosphates. The crystal structure has been refined for Ca9.5Co0.5(PO4)6(OH)2 (a = 9.4121(28) Å, c = 6.8762(20) Å, V = 527.54(35) Å3; R-Bragg = 2.455%) under the assumption of …

Go to article

Proof Of The Wave Function Identity, A New Symmetry Constraint For The Three-Electron Quantum Dot In A Magnetic Field And Ad Hoc Generalization To Bound Many-Electron Systems, Marlina Slamet, Viraht Sahni Oct 2026

Proof Of The Wave Function Identity, A New Symmetry Constraint For The Three-Electron Quantum Dot In A Magnetic Field And Ad Hoc Generalization To Bound Many-Electron Systems, Marlina Slamet, Viraht Sahni

Publications and Research

We prove the Wave Function Identity (WFI), a newly discovered property of solutions to the two-dimensional Schrödinger–Pauli equation for the 𝑁 = 3 electron Coulombically interacting harmonically bound ‘artificial atom’ or quantum dot in a uniform magnetic field. The symmetry is comprised of an interchange of the spatial coordinates of two electrons whilst keeping their spin moments unchanged, followed by an inversion of all three electron coordinates. The proof is achieved by first deriving the general form of the exact correlated wave function in the high-electron-correlation Wigner regime and then proving the WFI employing this form for a ground and …

Go to article

Operations And Maintenance Report Grove Gulch Sedimentation Bay - Post-Storm 10.13.26 Silver Bow Creek/Butte Area Npl Site – Butte Priority Soils Operable Unit Consent Decree-Civil Action No. Cv 89-039-Bu-She, Josh Bryson Oct 2026

Operations And Maintenance Report Grove Gulch Sedimentation Bay - Post-Storm 10.13.26 Silver Bow Creek/Butte Area Npl Site – Butte Priority Soils Operable Unit Consent Decree-Civil Action No. Cv 89-039-Bu-She, Josh Bryson

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Go to article

Measurements And Analysis Of Light Non-Methane Hydrocarbon Mole Fractions In 1982–1987 At Six Remote Sites Along The Pacific Rim, A. M. Smith, C. L. Butenhoff, M. A. K. Khalil, A. L. Rice Oct 2026

Measurements And Analysis Of Light Non-Methane Hydrocarbon Mole Fractions In 1982–1987 At Six Remote Sites Along The Pacific Rim, A. M. Smith, C. L. Butenhoff, M. A. K. Khalil, A. L. Rice

Physics Faculty Publications and Presentations

Atmospheric non‐methane hydrocarbons (NMHCs) are important trace species with anthropogenic and natural sources including fugitive emissions from fossil fuel mining and distribution, biomass burning, biofuel combustion, and biogenic emissions from microbes and plants. We present previously unpublished whole air sample measurements of NMHCs collected at approximately weekly intervals from 1982 to 1987 at six stations spanning the Northern and Southern hemispheres, which sampled primarily Pacific Basin air masses as determined by back‐trajectory analysis. The four alkanes in this data set, ethane, propane, i‐ and n‐butane had a mean measured mole fraction of 712 ± 22 ppt, 245 ± 13 ppt, …

Go to article

On A Remark Of De Gennes Concerning Three-Dimensional Polyelectrolytes, Shiquan Li, Carl Mueller Oct 2026

On A Remark Of De Gennes Concerning Three-Dimensional Polyelectrolytes, Shiquan Li, Carl Mueller

Journal of Stochastic Analysis

This work is inspired by a remark of de Gennes [3] about polyelectrolytes, which are charged polymers. A common model for a polymer is a self-avoiding or self-repelling random walk or Brownian motion. For polyelectrolytes, the repelling potential is the Coulomb potential arising from pairs of charged particles. We show that in the continuous case of a Brownian motion in three dimensions, the spread of the polymer, in particular the radius of gyration of a polyelectrolyte of length T grows linearly with T, up to logarithmic corrections.

Go to article

How Wide Is The Screening Window For Aggressive Non-Small Cell Lung Cancers? The Cure Threshold Metric And Its Implications For Lung Cancer Screening Guidelines, Deborah Goldwasser Oct 2026

How Wide Is The Screening Window For Aggressive Non-Small Cell Lung Cancers? The Cure Threshold Metric And Its Implications For Lung Cancer Screening Guidelines, Deborah Goldwasser

Mathematics Colloquium Series

The entire NSU community, including students at all levels of mathematics, is invited and encouraged to attend. A reception with coffee and snacks will take place in the Department of Mathematics Suite Parker 320 from 12:00-12:30 just prior to the colloquium talk. Abstract: Lung cancer screening by low-dose computed tomography (LDCT) has demonstrated a mortality reduction in two large randomized controlled trials. However, LDCT also frequently identifies benign pulmonary nodules in high-risk but otherwise healthy individuals. The management of small pulmonary nodules is guided primarily by malignancy probability.  However, the surgical cure threshold, the maximum tumor size at which surgical …

Go to article

First Prev Next Last