Digital Commons Network^™

Pyxtal_Ff: A Python Library For Automated Force Field Generation, Howard Yanxon, David Zagaceta, Binh Tang, David S. Matteson, Qiang Zhu

Physics & Astronomy Faculty Research

We present PyXtal_FF—a package based on Python programming language—for developing machine learning potentials (MLPs). The aim of PyXtal_FF is to promote the application of atomistic simulations through providing several choices of atom-centered descriptors and machine learning regressions in one platform. Based on the given choice of descriptors (including the atom-centered symmetry functions, embedded atom density, SO4 bispectrum, and smooth SO3 power spectrum), PyXtal_FF can train MLPs with either generalized linear regression or neural network models, by simultaneously minimizing the errors of energy/forces/stress tensors in comparison with the data from ab-initio simulations. The trained MLP model from PyXtal_FF is interfaced with …

Adrenal Ectopy And Lipoma Of An Inguinal Hernia Sac: A Case Report & Literature Review., Jenna R Adalbert, Rafael E Pajaro

Student Papers, Posters & Projects

INTRODUCTION & IMPORTANCE: Ectopic adrenocortical tissue is the presence of accessory adrenal cortex tissue located outside of the adrenal glands. It is a rare, incidental finding during inguinal hernia repair. This case report aims to discuss the anatomy and important patient implications related to this finding.

CASE PRESENTATION: A 61-year-old male presented with a long-standing right direct inguinal hernia increasing in size and pain frequency. During open right anterior inguinal hernia repair, a lipoma was identified inside the hernia sac and removed. Further histopathological examination of the specimen revealed the presence of adrenocortical tissue inside the lipoma. No further interventions …

Near Conformal Perturbation Theory In Syk Type Models, Sumit R. Das, Animik Ghosh, Antal Jevicki, Kenta Suzuki

Physics and Astronomy Faculty Publications

We present a systematic procedure to extract the dynamics of the low energy soft mode in SYK type models with a single energy scale J and emergent reparametrization symmetry in the IR. This is given in the framework of the perturbative scheme of arXiv:1608.07567 based on a specific (off-shell) breaking of conformal invariance in the UV, adjusted to yield the exact large-N saddle point. While this breaking term formally vanishes on-shell, it has a non-trivial effect on correlation functions and the effective action. In particular, it leads to the Schwarzian action with a specific coupling to bi-local matter. The …

A Quality Improvement Learning Collaborative For Human Papillomavirus Vaccination., Kristin Oliver, Kera Beskin, Laura Noonan, Amy Shah, Rebecca Perkins, Sharon Humiston

Manuscripts, Articles, Book Chapters and Other Papers

Many published accounts have shown that quality improvement (QI) initiatives within medical practice settings can increase vaccination rates. Project ECHO is a telementoring platform that uses video conferencing technology to educate and support healthcare professionals through case-based learning and brief lectures. This manuscript explores the results of a learning collaborative focused on combining QI and Project ECHO to increase human papillomavirus (HPV) vaccination rates within pediatric practices.

Methods: The American Academy of Pediatrics (AAP) recruited 3 AAP chapters that then recruited individual pediatricians and their practices for participation. Participants responded to surveys regarding chapter and pediatrician experience and satisfaction. Impact …

Top Ole Miss News Stories Of 2020, Staff Report

University of Mississippi News

Year-end review showcases highlights, achievements across UM

Parents’ Voices: Virtual Classroom Bridging Homeschooling To Public Schools, Dennis Norman, Tian Luo, Pauline Salim Muljana

Journal of Educational Technology Development and Exchange (JETDE)

This research examined to what extent homeschooling parents believed that virtual classrooms have bridged the home and public-schooling systems via a case study. Data were drawn from an online survey as well as Skype and personal interviews with ten participants who were parents of home-schooled children with an understanding of the virtual learning process. Participants reported both benefits and challenges of virtual homeschooling from parents’ perspectives. Discussion and implications to educational practitioners are included.

Investigation Of The Moisture Binding Forms In Plant Raw Materials And Thermal Characteristics Determination, Tojiniso Raxmanova, Shaxnoza Sultanova, Jasur Safarov, Esra Capanoglu

Technical science and innovation

In this article, the forms of moisture connection and the thermal characteristics of plant materials are studied. Rosehip and hawthorn fruits were chosen as the object of research. In the heat analyzer, a decrease in the mass of the product and an increase in temperature were found when the temperature was controlled in a certain gas environment. The curves of the dependence of the dog rose and hawthorn samples on the mass and temperature are given. DTA-1/10 galvanometer sensitivity; sensitivity of the DTG-1/5 galvanometer; the maximum heating temperature is 300° С and the rate of change of the furnace heating …

Methods And Tools Of Cement Production Process (Comparative Analysis), Potential Of Uzbekistan In This Area, Khudaykulov Umid, S Turgunbayev

Technical science and innovation

the article describes the history of cement use, its initial appearance, cement composition and its physicochemical structure and properties, types of cement and classifications of cement. Cement production processes, technological methods used in production, advantages and disadvantages of the methods and technological stages of the production process by the drying method of cement production are covered. A study of the cement industry and processes in the country was conducted, which summarized the most priority methods and processes of cement production based on the natural resources, climate and potential of Uzbekistan.

Stimulus Of Specialization On Postgraduate Students’ Application Of Mobile Technologies For Learning, Amos Ochayi Onojah, Adenike Aderogba Onojah, Nwadubike Edwin Nweke-Richards

Journal of Educational Technology Development and Exchange (JETDE)

Most students could be adopting the mobile technologies available but may not be for learning purposes. This study investigated the postgraduate students’ application of mobile technologies for learning and examined the differences in the application of mobile technologies by postgraduate students based on their area of specialization. The study was a quantitative research design. The population comprised all postgraduates’ students in Nigeria out of which 750 of them were purposively sampled across eleven universities based on accessibility. The data for the study was gathered using a Researchers-developed questionnaire. Statistical form of Mean was used to answer the research questions while …

Pyrrolidinyl Synthetic Cathinones Α-Php And 4f-Α-Pvp Metabolite Profiling Using Human Hepatocyte Incubations., Jeremy Carlier, Xingxing Diao, Raffaele Giorgetti, Francesco P Busardò, Marilyn A. Huestis

Institute of Emerging Health Professions Faculty Papers

For more than ten years, new synthetic cathinones (SCs) mimicking the effects of controlled cocaine-like stimulants have flooded the illegal drug market, causing numerous intoxications and fatalities. There are often no data on the pharmacokinetics of these substances when they first emerge onto the market. However, the detection of SC metabolites is often critical in order to prove consumption in clinical and forensic settings. In this research, the metabolite profile of two pyrrolidinyl SCs, α-pyrrolidinohexaphenone (α-PHP) and 4''-fluoro-α-pyrrolidinovalerophenone (4F-α-PVP), were characterized to identify optimal intake markers. Experiments were conducted using pooled human hepatocyte incubations followed by liquid chromatography-high-resolution tandem mass …

Analysis Of The Cores Of These Improvements Of Online Teaching System And Model－Based On The Evaluation And Feedback On The Online Teaching Model And Teaching Platform, Jiangxue Zhang, Kaiquan Chen

Journal of Educational Technology Development and Exchange (JETDE)

In recent years, MOOC, SPOC and other online teaching modes have attracted widespread attention. Online teaching platforms such as Tencent Classroom and MOOC of Chinese universities have emerged in an endless stream. During the 2020 outbreak of COVID-19, schools at all levels actively engaged in online teaching. The problems and challenges faced in the course of this teaching process will push the research hotspots of modern educational technology to construct the online teaching model that meets the needs of colleges and universities in the context of "Internet + Education". This study collected the evaluation and feedback of college students from …

Estimation Of The Speed Of Rotation Of Gears In Oil Depending On The Load, Ramzjon Hamroyev, N Mirzayev, B Qurbonov

Technical science and innovation

This article shows the wear and the amount of load that occurs in the gears under different loads and under different operating conditions of the contact surfaces, and is given by the formulas. The values of loads and wear rates on gears are given in tabular form based on curves. According to the results of the study, an increase in the load value affects the wear rate, as well as the load values q = 100; 200; 300; 400; at N/mm, a decrease in the wear rate was found. The load concentration and accumulation of dislocations in the material, their …

Decomposition Method For Modeling And Research Of Pulse-Frequency Control Systems, A Kadirov, Amir A Kadirov

Technical science and innovation

. The pulse-frequency control systems are widely used in radar, space industry, for control of technological processes and robots and many other areas. Today, there are various approximate and accurate methods for the analysis and synthesis of pulse-frequency systems (PFS). However, the area of the practical application of the existed methods is mainly limited to single-variable systems. The classical methods provide the consideration of the initial structures of pulse-frequency systems as a whole. This article proposes the decomposition method for modeling and research pulse-frequency automatic control systems. The method is based on the mathematical apparatus of signal-flow graphs. We can …

Optimal Adjustment Of The Human Circadian Clock In The Real World, Samuel Christensen, Yitong Huang, Olivia J. Walch, Daniel B. Forger

Mathematics Sciences: Faculty Publications

Which suggestions for behavioral modifications, based on mathematical models, are most likely to be followed in the real world? We address this question in the context of human circadian rhythms. Jet lag is a consequence of the misalignment of the body’s internal circadian (~24-hour) clock during an adjustment to a new schedule. Light is the clock’s primary synchronizer. Previous research has used mathematical models to compute light schedules that shift the circadian clock to a new time zone as quickly as possible. How users adjust their behavior when provided with these optimal schedules remains an open question. Here, we report …

To What Extent Do Local Nursing Home Prescribing Patterns Relate To Psychotropic Prescribing In Assisted Living?, Kali Thomas, Christopher J. Wretman, Philip D. Sloane, Paula Carder, Lindsay Schwartz, Anna S. Beeber, Sheryl Zimmerman

Institute on Aging Publications

In nursing homes (NHs), psychoactive medication use has received notable attention, but less is known about prescribing in assisted living (AL). This study examined how antipsychotic and antianxiety medication prescribing in AL compares with NHs.

Guns-For-Hire: Chinese Mercenaries On The 21st Century Silk Road, Carl H. Peterson Iv

Washington International Law Journal

There has been an increased global use of private military contractors (PMCs) since the large-scale American use of them in the wars in Afghanistan and Iraq. This has included an increase in Russian and now Chinese PMCs. As China continues to develop its Belt and Road Initiative (BRI), it is likely that the world will see an increase in the number of Chinese PMCs used to protect these projects. In this event it is important to bring Chinese PMCs into the PMC industry’s most effective private regulatory bodies, as these bodies are often more effective at ensuring ethical PMC conduct …

The "People's Total War On Covid-19": Urban Pandemic Management Through (Non-)Law In Wuhan, China, Philipp Renninger

Washington International Law Journal

Although COVID-19 was first detected in the People’s Republic of China, the pandemic now appears contained there. Western and Chinese media attribute this apparent success to the central level of the Chinese state and the Communist Party. However, this article reveals that local entities provided critical contributions to China’s COVID-19 management, particularly in the pandemic’s first epicenter: Wuhan city in Hubei province. Chinese cities like Wuhan can fight public health emergencies through legal and nonlegal instruments. Although Wuhan had prepared for possible pandemics, its existing plans, institutions, and warning systems initially failed against COVID-19. The city did not contain the …

Enforcing U.S. Foreign Policy By Imposing Unilateral Secondary Sanctions: Is Might Right In Public International Law?, Patrick C.R. Terry

Washington International Law Journal

Following the United States’ unilateral withdrawal from the agreement between the five permanent UN Security Council members, the European Union, Germany, and Iran, that intends to stop Iran from acquiring nuclear weapons, the United States has re-imposed and tightened its sanctions against Iran. The United States’ renunciation of the agreement, despite the agreement’s UN Security Council approval and verified Iranian compliance, arguably violated international law. Nevertheless, the United States is attempting to compel the other state parties (and others) to follow its policy on Iran by threatening those states’ companies and business executives with economic or even criminal sanctions to …

Foreword

Washington International Law Journal

No abstract provided.

Cover

Washington International Law Journal

No abstract provided.

Impact Of Psychoeducation Program On Turkish Students' Negative Attitudes Towards Refugee Peers, Ali Çekiç, Zeynep Hamamcı

Journal of Social, Behavioral, and Health Sciences

About 26% of the Syrian population in Turkey is made up of school-age children. In the 2017–2018 academic year, 608,000 Syrian students enrolled in the education system, and 50% attended temporary education centers established for only Syrian students, while the other half attended public schools with their Turkish peers. One of the main factors that complicate the adaptation process of Syrian refugee students who have come to a different culture and have been placed in a foreign education system is the discriminatory attitudes from the locals’ prejudices. Thus, in this study, a five-week psychoeducation program was developed and implemented by …

22-1, 2020 Masthead

San Diego International Law Journal

No abstract provided.

Metrological Certification And Test Conditions For Verification Equipment, A Turgunbaev, H Usmanova, O Abdurakhmanov

Technical science and innovation

The article analyzes the metrological certification and test conditions for verification equipment. The main tasks of metrological certification, test conditions, accuracy characteristics of verification equipment, primary, repeated and periodic, expert and inspection certification of verification equipment are considered in the article. Besides, the major tasks of the testing equipment certification are considered as well. They are: establishing the current testing equipment eligibility in accordance with its purpose, establishing the actual reproducibility values of test conditions implemented by testing equipment and assessing the technical characteristics compliance of testing equipment with the safety, hygienic and other special requirements

Numerical Calculation Of Electronic Circuits With Nonlinear Elements, X Sapaev, E Abduraimov, Sh Umarov

Technical science and innovation

Non-linear elements are widely used in various automation devices, converting and measuring equipment. They are often presented in the form of diode-resistive circuits. In single-circuit electrical circuits, their calculation by a numerical method reduces to compiling nonlinear equations and solving it using the Newton-Raphson method with specifying reasonable initial conditions for the calculation. The article is aimed at determining the dimensions of the Jacobi matrix in numerical calculations of nonlinear chains. Using the example of numerical calculation of two simplest schemes with nonlinear elements, it is shown that by eliminating the coordinate chain (system equations) from the system of equations …

Application Of The Ground Laser Scanning Results In Monitoring Of Adjacent Rock Masses Of Deep Careers, Sh Rahimov

Technical science and innovation

The method of laser scanning, used in combination with the traditional mine surveying, is one of the most effective and safest ways to carry out mine surveying and instrumental observations on deforming areas of open mining objects. The article presents the results of ground-based laser scanning of the Kharanutsky coal pit and a comparative analysis to determine the deformations and displacements of the sides for different periods, which was performed in the RISCAN PRO environment. Digital elevation models (DEM) were built, distinguishing observation cycles by color. As a result of comparison, the places of manifestation of deformations and displacements were …

A Method For Classifying Ecg Signals With Different Possible States On A Multilayer Perceptron, Sherzod Nematov, Y Talatov

Technical science and innovation

To automatically determine the state of the cardiovascular system based on the recorded ECG signals, an artificial neural network is trained to classify signals into various possible states. At the same time, the parameters of heart rate variability (HRV) were extracted from the ECG signals and used as input functions for the neural network. HRV is the fluctuation in the time intervals between adjacent heartbeats. For this, the architecture of a neural network based on a multilayer perceptron and a method for obtaining the necessary parameters in the learning process have been developed, and the classification efficiency has been checked …

Digital Commons @ Iwu Report, 2019-20, Meg Miner

Administrative Reports

No abstract provided.

Local Electronic And Magnetic Properties Of The Doped Topological Insulators Bi₂Se₃:Ca And Bi₂Te₃:Mn Investigated Using Ion-Implanted ⁸Li Β-Nmr, Ryan M. L. Mcfadden, Aris Chatzichristos, David L. Cortie, Derek Fujimoto, Yew San Hor, Huiwen Ji, Victoria L. Karner, For Full List Of Authors, See Publisher's Website.

Physics Faculty Research & Creative Works

We report β-NMR measurements in Bi₂Se₃:Ca and Bi₂Te₃:Mn single crystals using ⁸Li⁺ implanted to depths on the order of 100 nm. Above ∼200K, spin-lattice relaxation reveals diffusion of ⁸Li⁺, with activation energies of ∼0.4eV (∼0.2eV) in Bi₂Se₃:Ca (Bi₂Te₃:Mn). At lower temperatures, the NMR properties are those of a heavily doped semiconductor in the metallic limit, with Korringa relaxation and a small, negative, temperature-dependent Knight shift in Bi₂Se₃:Ca. From this, we make a detailed comparison with …

Novel Electrochemical Sensor Based On Integration Of Nanoporous Gold With Molecularly Imprinted Polymer For Detection Of Arsenic Ion(Iii), Wu-Wei Ma, Qi-Gang Chang, Xiong-Fang Shi, Yan-Bin Tong, Li Zhou, Bang-Ce Ye, Jian-Jiang Lu, Jin-Hu Zhao

Journal of Electrochemistry

Arsenic, a toxic chemical element, is detrimental to environment and human health in particular. Therefore, the development of simple, fast, and accurate arsenic ion (As³⁺) detection methods has attracted extensive attention. In this work, an electrochemical sensor based on molecular imprinted polymer (MIP) and nano-porous gold (NPG) modified indium tin oxide (ITO) electrode (MIP/NPG/ITO) was developed for determination of As³⁺ in water with different quality. NPG with high conductivity, large specific surface area and high biocompatibility was prepared in situ on ITO surface by a green electrodeposition method using simple and controllable steps. Then, a layer of …

Effect Of 18-Crown-6 Additive On Chromium Electrodeposition In Ionic Liquid, Yi-Jie Wang, Dong-Fang Niu, Xin-Sheng Zhang

Journal of Electrochemistry

Trivalent chromium ion (Cr³⁺) is used for electrodeposition due to its low toxicity. Electrodeposition in ionic liquids can greatly solve for hydrogen evolution problem. However,as a widely used Cr(III) precursor, chromium chloride hydrate (CrCl₃·6H₂O), still contains water. In the presence of water, Cr³⁺ will form a complex coordination structure with water molecules ([Cr(H₂O)₆]³⁺), which is a stable octahedral structure and is difficult to be directly reduced to chromium metal. Therefore, coordination agents should be added into the bath. In this work, the effect of 18-Crown-6 additive on …