Digital Commons Network^™

Signature Pattern Recognition Using Kohonen Network, Nadia Roosmalita Sari, Mohammad Zoqi Sarwani, Yudha Alif Aulia, Wayan Firdaus Mahmudy

Knowledge Engineering and Data Science

A signature is a special form of handwriting that used for human identification process. The current identification process is extremely ineffective. People have to manually compare signatures with the previously stored data. This study proposed SOM Kohonen algorithm as the method of signature pattern recognition. This method has able to visualize high-dimensional data. The image processing method is used in this study in pre-processing data phase. The accuracy of SOM Kohonen was 70 %, indicated the method used was good enough for pattern recognition.

Digit Classification Of Majapahit Relic Inscriptionusing Glcm-Svm, Tri Septianto, Endang Setyati, Joan Santoso

Knowledge Engineering and Data Science

A higher level of image processing usually contains some kind of classification or recognition. Digit classification is an important subfield in handwritten recognition.Handwritten digits are characterized by large variations so template matching, in general, is inefficient and low in accuracy. In this paper, we propose the classification of the digit of the year of a relic inscription in the Kingdom of Majapahit using Support Vector Machine (SVM). This method is able to cope with very large feature dimensions and without reducing existing features extraction. While the method used for feature extraction using the Gray-Level Co-Occurrence Matrix (GLCM), special for texture …

Change Vulnerability Forecasting For Southeast Asiausing Deep Learning Algorithm, Amelia Ritahani Ismail, Nur 'Atikah Binti Mohd Ali, Junaida Sulaiman

Knowledge Engineering and Data Science

Climate change is expected to change people’s livelihood in significant ways. Several vulnerability factors and readiness factors used for measuring the prediction index of that particular country on how vulnerable of a country towards global change. Primary data was collected from University of Notre Dame Global Adaptation Index (NDGAIN). The data has been trained for the forecasting purpose with support from the validated statistical analysis. The summary of the predicted index is visualized using machine learning tools. The results developed the correlation between vulnerability and readiness factors and shows the stability of the country towards climate change. The framework is …

Top Ole Miss Stories Of 2018, Staff Report

University of Mississippi News

Year-end review showcases highlights, achievements across UM

Computational Time Optimization In Airwake Vortex Mapping For Rotorcraft Flight Simulators, Ethan S. Genter, David A. Peters

Mechanical Engineering and Materials Science Independent Study

In the following paper, we demonstrate the use of Fourier Transform as an integrated method to approach the reduction of computational cost in vortex mapping for rotorcraft flight simulators. Fourier Transform is used to analyze airwake data, both in time and spatially, to understand the structure of readily occurring air vortices on the flight deck of a Simplified Frigate Ship configuration (SFS-2). The result was both a clear and descriptive amplitude spectrum for a particular range of positions on the flight deck. The technique proved to be promising in reducing computation and has the potential to improve rotorcraft flight simulation …

Five Oral Reading Fluency Strategies For Supporting Struggling Adolescent Readers, Kavin M. Ming

National Youth Advocacy & Resilience Journal

By the time students enter the fourth grade, it is expected that they possess the basic literacy skills needed to read and learn content. It is the general belief that in the early grades, students are taught foundational literacy skills that make them proficient readers by the time they become adolescent learners. For many, this assumption is true. However, for a large majority of students between Grades 4 and 12, basic literacy skills are not in place, leading them to struggle to acquire information. Oral reading fluency, one of the basic literacy skills that adolescents must possess, can be explicitly …

Different Methods Of Embodied Cognition In Pedagogy And Its Effectiveness In Student Learning, Cassandra Durkee

Master's Theses

The Mathematical Ideas Analysis hypothesizes that abstract mathematical reasoning is unconsciously organized and integrated with sensory-motor experience. Basic research testing movement, language, and perception during math problem solving supports this hypothesis. Applied research primarily measures students’ performance on math tests after they engage in analogous sensory-motor tasks, but findings show mixed results. Sensory-motor tasks are dependent on several moderators (e.g., instructional guidance, developmental stage) known to help students learn, and studies vary in how each moderator is implemented. There is little research on the effectiveness of sensory-motor tasks without these moderators. This study compares different approaches to working with an …

العلاقة بين المعرفة الضمنية للمدقق وتقليص فجوة التوقعات دراسة استطلاعية لآراء عينة من موظفي ديوان الرقابة المالية الاتحادي, باسم محمد مرهج

Muthanna Journal of Administrative and Economics Sciences

يتركز موضوع البحث في دراسة العلاقة بين المعرفة الضمنية للمدقق بأبعادها(التفكير , المهارة, الخبرة) , وتقليص فجوة التوقعات, لآراء عينة من موظفي ديوان الرقابة المالية الاتحادي, وتضمن البحث فرضيتين رئيسيتين, الاولى لعلاقات الارتباط والثانية لعلاقات التأثير بين متغيرات البحث, تم اختيار عينة من السادة الموظفين في الديوان والبالغ عددهم (65) فرد, باعتماد الاستبانة التي اشتملت (30) فقرة, وتم استخراج النتائج باستخدام البرنامج الاحصائي (SPSS), تم التوصل الى مجموعة من النتائج التي كان أهمها تمتع المدقق بالقدرة العالية على اكتشاف الاخطاء والتي تحصل داخل المنظمة , وكذلك قدرته على معالجة المشكلات وطرح الحلول المناسبة لها, وتم صياغة عدد من التوصيات ذات …

On The Generalized Kinetic Equation For Surface Gravity Waves, Blow-Up And Its Restraint, David Andrade, Raphael Stuhlmeier, Michael Stiassnie

School of Engineering, Computing and Mathematics

No abstract provided.

Social Recommendation Systems, Avni Gulati

Master's Theses

In recent years, with the rise of online social networks, personalized recommendations that leverage the aspect of social connections have become a very intriguing domain for researchers. In this work, we explore how influence propagation and the decay in the cascading effect of influence from influential users can be leveraged to generate social graph-based recommendations. Understanding how influence propagates within a social network is itself a challenging problem. In this research, we model the decay in influence propagation in directed graphs, utilizing the structural properties of the social graph to measure the propagated influence beyond one-hop. This social network information …

Intraguild Predation: Interactions Between Predators, Pathogens, And Their Shared Resources In Crop Pest Communities, Andrew Jason Flick

LSU Doctoral Dissertations

Crop pest management requires an understanding of the complex interactions among pest species that potentially damage crop yield and species that may be crucial for controlling pest species outbreaks. For example, predators, parasitoids, and pathogens are constantly interacting via their shared prey or hosts. Predators may prefer infected prey, which can be easier to catch; however, infected prey may be less nutritious or even lethal for predators. These interactions then dictate the short-term dynamics of host and pathogen as well as between prey and predator. "How these dynamics change as the species in the system change either empirically or theoretically?" …

Thai Vocational Internship Student-Teacher Development Through A Constructionism Learning Skills Model, Sirikanya Netrthanon, Sirirat Petsangsri, Paitoon Pimdee

Asia-Pacific Social Science Review

No abstract provided.

Post-Wildfire Recovery Of An Upland Oak-Pine Forest On The Cumberland Plateau, Kentucky, Usa, Devin E. Black, Zachary W. Poynter, Claudia A. Cotton, Suraj Upadhaya, David D. Taylor, Wendy Leuenberger, Beth A. Blankenship, Mary A. Arthur

Forestry and Natural Resources Faculty Publications

Background: Many forests within the southern Appalachian region, USA, have experienced decades of fire exclusion, contributing to regeneration challenges for species such as oaks (Quercus spp. L.) and pines (Pinus spp. L.), and threatening the maintenance of oak-dominated forests in the future. While the use of prescribed fire as a forest management tool is increasing within this region, there remains a lack of information on the potential role of wildfire. A wildfire within the Daniel Boone National Forest, Kentucky, USA, provided an opportunity to investigate how wildfire affected forest vegetation response.

Results: We examined the effects of fire …

Find, Process, And Share: An Optimal Control In The Vidale-Wolfe Marketing Model, Michael C. Barg

CODEE Journal

The Vidale-Wolfe marketing model is a first-order, linear, non-homogeneous ordinary differential equation (ODE) where the forcing term is proportional to advertising expenditure. With an initial response in sales as the initial condition, the solution of the initial value problem is straightforward for a first undergraduate ODE course. The model serves as an excellent example of many relevant topics for those students whose interests lie in economics, finance, or marketing. Its inclusion in the curriculum is particularly rewarding at an institution without a physics program. The model is not new, but it was novel to us when a group of students …

Awareness And Use Of Electronic Books Among Undergraduate Students: A Survey, Chuks Daniel Oriogu, Kolawole Idowu Oluwatola, Darlina Chima Oriogu-Ogbuiyi, Augustine I. Enamudu

Library Philosophy and Practice (e-journal)

The increasingly growth of electronic books has created an enabling access to and use of e-prints within the confine of one’s environment; thereby providing wider accessibility and usability. However, the study investigated the awareness and use of electronic books among undergraduate students in Afe Babalola University Ado-Ekiti, Nigeria. A survey research design was adopted and structured questionnaire was used to collect data. Descriptive statistics was used to answer the research questions. The study revealed that most of the respondents are partially aware of the availability of e-book in their area of specialization, dedicated e-book reader devices (e.g. Kindle, Sony reader) …

Investigation Of The Impact Of The Rotation Frequency Of The Discretizing Drum On The Physical And Mechanical Properties Of, Sh.A Korabayev, S.L Matismailov, J.Z Salohiddinov

Central Asian Problems of Modern Science and Education

This article presents the research results of the rotation frequency influence of a pneumatic spinning machine’s drum on the quality indicators of the yarn produced with a linear density of 29 tex. With the rotation frequency increase of the sampling drums, the specific breaking load of the yarn increases to 11.1 cN / tex, elongation to 6.3%, while reducing the coefficient of variation of the breaking load to 9.2%.

Improving The Efficiency Of Operation Of Refrigerated Transport, J R. Kobulov, D I. Ilesaliev

Scientific-technical journal

In this paper, the optimization of the capacity of a refrigerated cars is proposed. Interrelations between the parameters of a transport package and a refrigerated car in the form of mathematical models are presented. An algorithm of search of the rational capacity of a refrigerated car has been developed. In this paper the method of directed enumeration is used. The practical significance of the paper consists of increasing of the technical load of vehicles

Usd President's Report 2018, University Of San Diego

President's Reports (1985- )

Message from the President, 2018 Year in Review, Winter/Spring, Summer, Fall, Leadership, 2017-2018 Financial Operations, Giving to the University

Transient Transmission Oscillations In Doped And Undoped Lithium Niobate Induced By Near-Infrared Femtosecond Pulses, Bryan J. Crossman, Gregory J. Taft

Physics Faculty Publications

Transient transmission oscillations in X-cut and Z-cut congruent, iron-doped, and magnesium-doped lithium niobate samples were measured using 50 fs, 800 nm, 0.5 nJ pulses from a self-mode-locked Ti:sapphire laser in an optical pump–probe system. Several Raman-active oscillation modes excited by these pulses were observed as changes in the transmitted probe intensity versus time delay between the pump and probe pulses. The samples were rotated to determine how the incident polarization of the pump pulses affects the mode excitations. The observed Raman-active oscillations correspond to previously reported symmetry modes measured with traditional, continuous-wave, Raman spectroscopy using the same scattering …

Decays Of Pentaquarks In Hadrocharmonium And Molecular Scenarios, Michael I. Eides, Victor Yu. Petrov

Physics and Astronomy Faculty Publications

We consider decays of the hidden charm LHCb pentaquarks in the hadrocharmonium and molecular scenarios. In both pictures the LHCb pentaquarks are essentially nonrelativistic bound states. We develop a semirelativistic framework for calculation of the partial decay widths that allows the final particles to be relativistic. Using this approach we calculate the decay widths in the hadrocharmonium and molecular pictures. Molecular hidden charm pentaquarks are constructed as loosely bound states of charmed and anticharmed hadrons. Calculations show that molecular pentaquarks decay predominantly into states with open charm. Strong suppression of the molecular pentaquark decays into states with hidden charm is …

Uncertainty Evaluation For The Determination Of 3 Plasticizers In Liquor By Gc-Ms/Ms, Yan Shunhua, Ye Qing, Han Jinxuan, Dilinuer Shabituofu

Food and Machinery

To evaluate the uncertainty of measurement in the determination of DIBP, DBP and DEHP in Liquor by GC-MS/MS. According to “JJF 1135—2005 Evaluation of Uncertainty in Chemical Analysis Measurement” and “JJF 1059.1—2012 Evaluation and Expression of Uncertainty in Measurement”, a mathematical model was established for uncertainty evaluation. The sources of uncertainty that may be introduced were analyzed and each component of uncertainty was quantified for the calculation of the combined uncertainty, The results showed that the expand uncertainty for DIBP, DBP, DEHP were 0.060, 0.062, 0.17 mg/kg, respectively. The preparation of standard solution, measurement repeatability and curve fitting were found …

Phase-Field Simulation Of Ice Crystal Growth On Foodquick-Freezing Preservation Process, Yang Yan, Yuan Xunfeng, Qiao Ximin, Fan Na

Food and Machinery

In view of the reduction of food quality due to the destructs cellular structure by the large ice crystals in quick-freezing preservation process, regarding cell solution as water and solute in binary system, the five-fold symmetric phase-field model with anisotropy of strong interface energy was used to reproducing the evolution process of ice crystal growth, the effect of freezing times on the behavior of ice crystal growth was studied. The results showed that simulation result of ice crystal growth were consistent with the actual morphology, both of which had developed side-branching in the middle of the main branch, the root …

Constructions Of Noble Metal Nanocrystals With Specific Crystal Facets And High Surface Area, Qiao-Li Chen, Hui-Qi Li, Ya-Qi Jiang, Zhao-Xiong Xie

Journal of Electrochemistry

Noble metal nanocrystals (NCs) have widespread applications in catalysis. Their catalytic performances are strongly related to the surface structures while the atomic utilization efficiency of noble metal is considerably correlated with the surface area. Thus, advantages of both specific surface structure and large surface area are highly required to show off simultaneously so as to optimize the catalytic performance and decrease the usage of noble metal. However, it seems that the two advantages are incompatible with each other in one NC since it is difficult for small NCs to keep their specific facets, while NCs with specific surface structure usually …

Stabilization Strategies Of Pt Catalysts Forproton Exchange Membrane Fuel Cells, Da-Ping He, Shi-Chun Mu

Journal of Electrochemistry

The low service lifetime of proton exchange membrane fuel cells (PEMFCs) is the main bottleneck for their commercial applications. One of the main factors is that the expensive metal Pt catalyst is easy to degradation under the harsh working environment of PEMFC (such as variable voltage, strong acidity, gas-liquid two-phase flow), which leads to the inevitable decay of the catalytic performance, thus, seriously restricting the lifetime of PEMFC. Therefore, the electrochemical stability of Pt-based electrocatalysts has become an important and hot topic to improve the PEMFC lifetime. In this paper, we review the recent development in enhancing the stability of …

The Pilot Application Of Electrochemical Impedance Spectroscopy On Dynamic Proton Exchange Membrane Fuel Cell, Jian-Wei Guo, Jian-Long Wang

Journal of Electrochemistry

By analyzing Electrochemical Impedance Spectroscopy (EIS) in applications of dynamic proton exchange membrane fuel cell (PEMFC), bottlenecks which restrict EIS tool development have been pointed out in this paper. Though the high-frequency resistance in EIS is largely accepted as cell inner-resistance, this can only be applied for cell with low current. The low-frequency resistance is difficult to be realized due to its relation with mass transfer. Furthermore, the improved Randles equivalent circuits are built up preliminarily, thus, penetrating into studies for mass transfer reaction, cell operation/degeneration, and high temperature fuel cell. Inspiringly, EIS is becoming an analyzing tool for stack …

Caging Porous Co-N-C Nanocomposites In 3d Graphene As Active And Aggregation-Resistant Electrocatalyst For Oxygen Reduction Reaction, Lu-Yang Xiu, Meng-Zhou Yu, Peng-Ju Yang, Zhi-Yu Wang, Jie-Shan Qiu

Journal of Electrochemistry

Oxygen reduction reaction (ORR) is the cornerstone reaction of many renewable energy technologies such as fuel cells and rechargeable metal-air batteries. The Pt-based electrocatalysts exhibit the highest activity toward ORR, but their large implementation is greatly prohibiting by unaffordable cost and inferior durability. During electrode manufacturing and electrochemical reaction, severe aggregation of catalyst nanoparticles induced by size effect further limits the operational performance of electrocatalysts. We report a new strategy for fabrication of active and aggregation-resistant ORR electrocatalyst by caging metal-organic frameworks derived Co-N-C nanocomposites in permeable and porous 3D graphene cages via sprayed drying the mixed colloids of ZIF-67 …

Evidence For Terahertz Acoustic Phonon Parametric Oscillator Based On Acousto-Optic Degenerate Four-Wave Mixing In A Silicon Doping Superlattice, Thomas E. Wilson

Physics Faculty Research

We report evidence for a 1.0-THz self-starting mirrorless acoustic phonon parametric oscillator (MAPPO) produced from acousto-optic phase-conjugate degenerate four-wave (D4WM) mixing in a THz laser-pumped silicon doping superlattice (DSL). The DSL was grown by molecular beam epitaxy on a (100) boron-doped silicon substrate. A superconducting NbTiN subwavelength grating was used to couple the THz laser radiation into the DSL. Superconducting granular aluminum bolometric detection, coupled with Si:B piezophonon spectroscopy, revealed excitation of THz coherent compressional and shear waves, along the ⟨111⟩ direction only. The Bragg scattering condition for distributed feedback, and the energy conservation requirement for the D4WM process, were …

Voltage Distribution Of Self-Humidifying Air-Cooled Pemfc, Kai-Feng Tan, Wei-Rong Chen, Ming Han, Xue-Xia Zhang

Journal of Electrochemistry

In this work, the self-adaptive characteristics of self-humidifying air-cooled PEMFC stack was investigated. The performance and the unit-cell voltage distribution of the stack were measured and analyzed through the unit-cell I-V curve fitting. The operating conditions for this experimental study were set as follows: hydrogen pressure at the anode was 2 bar, the fan power used for the reactant oxygen feed and stack cooling was at 0.3 W, and the duration and time gap of water purged from hydrogen chamber were 1 s and 10 s, respectively. The experimental results showed that the self-humidifying air-cooled PEMFC stack used for this …

Study Of The Reactions E+E-→Π+Π-Π0Π0Π0 And Π+Π-Π0Π0Η At Center-Of-Mass Energies From Threshold To 4.35 Gev Using Initial-State Radiation, J. P. Lees, V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, D. N. Brown, Yu G. Kolomensky, M. Fritsch, H. Koch, T. Schroeder, C. Hearty, T. S. Mattison, J. A. Mckenna, R. Y. So, V. E. Blinov, A. R. Buzykaev, V. P. Druzhinin, V. B. Golubev, E. A. Kozyrev, Milind Purohit, Jeffrey Wilson, Et. Al.

Faculty Publications

We study the processes e⁺e⁻ → π⁺π⁻π⁰π⁰π⁰nγ in which an energetic photon is radiated from the initial state. The data are collected with the BABAR detector at SLAC. About 14 000 and 4700 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469 fb⁻¹. The invariant mass of the hadronic final state defines the effective e⁺e⁻ center-of-mass energy. From the mass spectra, the first precise measurement of the e⁺e⁻ → π⁺π^{− …}

Research Progress In Hydrogen Evolution Low Noble/Non-Precious Metal Catalysts Of Water Electrolysis, Yang Li, Zhao-Yan Luo, Jun-Jie Ge, Chang-Peng Liu, Wei Xing

Journal of Electrochemistry

Hydrogen energy technology with hydrogen as an energy carrier is gaining more and more attention due to its cleanliness and high energy density. Hydrogen fuel cell vehicles have been listed as one of the ultimate energy technologies in the 21st century. Among them, sustainable hydrogen production technology is a necessary prerequisite for the future development of hydrogen energy economy. Electrolyzed water technology driven by renewable resources represents an important way to support the sustainable development of hydrogen energy economy. The development and utilization of high activity, low cost hydrogen evolution catalysts is a key factor in improving the efficiency and …