Digital Commons Network^™

The Calculation Of Total Fragment Excitation Energy For Photofission Of Uranium Isotopes, Mojtaba Jamiati, Payam Mehdipour Kaldiani

Turkish Journal of Physics

The total excitation energy as a function of fragment mass (TXE/A) are calculated for neutron induced fission of $^{235}$U and photofission of $^{238}$U by using the statistical model. With comparing the calculated results and the experimental data, the statistical model is modified. In new modified model, TXE are calculated by adding the neutron binding energy to the deformation energy. The calculated results using modified statistical model are in good agreement with the experimental data. Then, the total excitation energy as a function of fragment mass (TXE/A) are evaluated for photofission of Uranium isotopes.

Gup Effects On Hawking Temperature In Riemann Space-Time, Yumnam Kenedy Meitei, Telem Ibungochouba Singh, Irom Ablu Meitei

Turkish Journal of Physics

In this paper, the modified Hawking temperature of a static Riemann space-time is studied using the generalized Klein-Gordon equation and the generalized Dirac equation. Applying the Kerner-Mann quantum tunneling method, the modified Hawking temperatures for scalar particles and fermions that cross the event horizon of the black hole have been derived. We observe that the quantum gravity effects reduce the rise of thermal radiation temperature of the black hole.

Network Dynamics Reconstruction From Data, Deni̇z Eroğlu

Turkish Journal of Physics

We consider the problem of recovering the model of a complex network of interacting dynamical units from time series of observations. We focus on typical networks which exhibit heterogeneous degrees, i.e. where the number of connections varies widely across the network, and the coupling strength for a single interaction is small. In these networks, the behavior of each unit varies according to their connectivity. Under these mild assumptions, our method provides an effective network reconstruction of the network dynamics. The method is robust to a certain size of noise and only requires relatively short time series on the state variable …

Investigating Above-Bandgap And Below-Bandgap Optical Transition In Gabias Epilayers By Photoreflectance Spectroscopy, Ömer Dönmez, Ayşe Erol

Turkish Journal of Physics

We present optical identification of deep level defects in as-grown and annealed GaBixAs$_{1-x}$ (x $=$ 0, 0.013 and 0.015) alloys grown at different temperatures (220 \textdegree C and 320 \textdegree C) by using photo-modulated reflectance (PR) spectroscopy and photoluminescence (PL). The PR measurements are employed at above- and below-bandgap excitations, and the PR line-shape is analyzed by the third derivative functional form (TDFF). The PR at below-bandgap excitation reveals transitions at 0.757 \textpm 0.001 eV and 0.710 \textpm 0.002 eV at 30K and 300K, respectively. Franz-Keldysh oscillations are observed in all samples under above-bandgap excitation at PR measurements, and the …

Ai Techniques For Covid-19, Adedoyin Ahmed Hussain, Ouns Bouachir, Fadi Al-Turjman, Moayad Aloqaily

All Works

© 2013 IEEE. Artificial Intelligence (AI) intent is to facilitate human limits. It is getting a standpoint on human administrations, filled by the growing availability of restorative clinical data and quick progression of insightful strategies. Motivated by the need to highlight the need for employing AI in battling the COVID-19 Crisis, this survey summarizes the current state of AI applications in clinical administrations while battling COVID-19. Furthermore, we highlight the application of Big Data while understanding this virus. We also overview various intelligence techniques and methods that can be applied to various types of medical information-based pandemic. We classify the …

Quantum Thermodynamics And Quantum Coherence Engines, Asli Tuncer Özdemi̇r, Özgür Esat Müstecaplioğlu

Turkish Journal of Physics

The advantages of quantum effects in several technologies, such as computation and communication, have already been well appreciated. Some devices,such as quantum computers and communication links,exhibiting superiority to their classical counterparts,have been demonstrated. The close relationship between information and energy motivates us to explore if similar quantum benefits can be found in energy technologies. Investigation of performance limits for a broader class of information-energy machines is the subject of the rapidly emerging field of quantum thermodynamics. Extension of classical thermodynamical laws to the quantum realm is far from trivial. This short review presents some of the recent efforts in this …

Unraveling Energy Consumption By Using Low-Cost And Reevaluated Thermoelectric Thin Films, Gi̇zem Durak Yüzüak, Seray Özkan, Ercüment Yüzüak

Turkish Journal of Physics

Energy is undoubtedly one of our most important demands whose consumption is constantly increasing and will continue to increase soon. One of the most important factors in attaining the required energy is to provide high efficiency at a low cost with the help of new technological improvements by evaluating wastes. Energy demand could be achieved for a relatively large thermoelectric power value by recycling the Peltier modules from waste ones and adjusting their properties with nanotechnology. For this aim, thermoelectric thin film modules were grown on silicon (Si), glass, and Kapton substrates with thermal evaporation method by using two different …

Weak Deflection Angle Of Black-Bounce Traversable Wormholes Using Gauss-Bonnet Theorem In The Dark Matter Medium, Ali Övgün

Turkish Journal of Physics

Inthispaper, wefirstusetheopticalmetricsofblack-bouncetraversablewormholestocalculatetheGaussian curvature. Then we use the Gauss-Bonnet theorem to obtain the weak deflection angle of light from the black-bounce traversable wormholes. We investigate the effect of dark matter medium on weak deflection angle using the Gauss-Bonnet theorem. We show how weak deflection angle of wormhole is affected by the bounce parameter a. Using the Gauss-Bonnet theorem for calculating weak deflection angle shows us that light bending can be thought as a global and topological effect.

Transfer Matrix In Scattering Theory: A Survey Of Basic Properties And Recent Developments, Ali̇ Mostafazadeh

Turkish Journal of Physics

We give a pedagogical introduction to time-independent scattering theory in one dimension focusing on the basic properties and recent applications of transfer matrices. In particular, we begin surveying some basic notions of potential scattering such as transfer matrix and its analyticity, multidelta-function and locally periodic potentials, Jost solutions, spectral singularities and their time-reversal, and unidirectional reflectionlessness and invisibility. We then offer a simple derivation of the Lippmann-Schwinger equation and the Born series, and discuss the Born approximation. Next, we outline a recently developed dynamical formulation of time-independent scattering theory in one dimension. This formulation relates the transfer matrix and therefore …

Optimization Of Collection Optics For Maximum Fidelity In Entangled Photon Sources, Kadi̇r Durak

Turkish Journal of Physics

In this report,decoherence sources for entangled photons created by spontaneous parametricdown-conversion phenomenon are studied. The phase and spatial distinguishability of photon pairs from orthogonal crystals reduce the maximum achievable entanglement fidelity. Carefully chosen compensation crystals are used to erase the phase and spatial traces of down-conversion origins. Emission angle of photon pairs also leads to optical path difference and results in phase distinguishability. A realistic scenario is numerically modelled, where the photon pairs with nonzero emission angle gather a phase difference. These pairs can still be collected and manipulated for practical use but the collection optics adds upon the phase …

Tuning The Magnetic Field Sensitivity Of Planar Hall Effect Sensors By Using A Cr Spacer Layer In A Nife/Cr/Irmn Trilayer Structure, Hasan Pi̇şki̇n, Numan Akdoğan

Turkish Journal of Physics

Planar Hall effect (PHE)-based magnetic field sensors have recently received considerable attention due to their fascinating properties. For the NiFe/spacer/IrMn trilayer PHE sensor structures, tuning the exchange bias via a spacer layer is very crucial due to its direct effects on the sensor's magnetic field sensitivity. Here the effect of Cr spacer layer thickness on PHE sensitivity and exchange bias is investigated in NiFe (10 nm)/Cr (t$_{Cr})$/IrMn (20 nm) trilayer structures where the t$_{Cr}$ varied between 0.0 nm and 1 nm with a step of 0.1 nm. As the t$_{Cr}$ increased, we observed a fast decrease in exchange bias field. …

Quantum Gravity Correction To The Thermodynamic Quantities Of The Charged Drgt Black Hole, Gani̇m Geçi̇m

Turkish Journal of Physics

In this study, in the framework of the Hamilton approach, the quantum gravity effect on Hawking temperature, on the specific heat capacity, and on the stability conditions of the charged de Rham, Gabadadze, and Tolley (dRGT) black hole are investigated by using the tunneling processes of both charged massive scalar and Dirac particles. It is shown that quantum corrected Hawking temperature depends not only on the black hole properties but also on the properties of the tunnelling particles. It is also observed that quantum corrected Hawking temperature is lower than that of the standard Hawking temperature. Also, the specific heat …

Benzimidazole Containing Acetamide Derivatives Attenuate Neuroinflammation And Oxidative Stress In Ethanol-Induced Neurodegeneration, Muhammad Imran, Lina Tariq Al Kury, Humaira Nadeem, Fawad Ali Shah, Muzaffar Abbas, Shagufta Naz, Arif Ullah Khan, Shupeng Li

All Works

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. Oxidative stress-induced neuroinflammation is the prominent feature of neurodegenerative disorders, and is characterized by a gradual decline of structure and function of neurons. Many biochemical events emerge thanks to the result of this neurodegeneration, and ultimately provoke neuroinflammation, activation of microglia, and oxidative stress, leading to neuronal death. This cascade not only explains the complexity of events taking place across different stages, but also depicts the need for more effective therapeutic agents. The present study was designed to investigate the neuroprotective effects of newly synthesized benzimidazole containing acetamide derivatives, 3a (2-(4-methoxyanilino)-N-[1-(4-methylbenzene-1-sulfonyl)-1H-benzimidazol-2-yl] …

Bodacious-Instance Coverage Mechanism For Wireless Sensor Network, Shahzad Ashraf, Omar Alfandi, Arshad Ahmad, Asad Masood Khattak, Bashir Hayat, Kyong Hoon Kim, Ayaz Ullah

All Works

Copyright © 2020 Shahzad Ashraf et al. Due to unavoidable environmental factors, wireless sensor networks are facing numerous tribulations regarding network coverage. These arose due to the uncouth deployment of the sensor nodes in the wireless coverage area that ultimately degrades the performance and confines the coverage range. In order to enhance the network coverage range, an instance (node) redeployment-based Bodacious-instance Coverage Mechanism (BiCM) is proposed. The proposed mechanism creates new instance positions in the coverage area. It operates in two stages; in the first stage, it locates the intended instance position through the Dissimilitude Enhancement Scheme (DES) and moves …

Nanodiamonds And Carbon Nano-Onions Ceramic Composites And Their Applications, Ibrahim Munkaila Abdullahi

Masters Theses

"Luminescent nanodiamonds are photostable non-blinking fluorescent biocompatible, non-toxic, functional Zable materials made from high-pressure high temperature (HPHT) microcrystalline diamonds. For long, the scientific community has been investigating for a clean, efficient and cost-effective technique to reduce the size of fluorescent microcrystalline diamond into nanodiamonds. Their color center, responsible for the fluorescent properties are crucial for their applications, including biomedical imaging, nano sensing, quantum computing etc, and therefore should not be affected significantly by the method of size reduction applied. A novel size reduction technique that is based on explosive fragmentation was developed and the corresponding fragmented diamonds obtained were characterized …

Explicit Determinantal Formula For A Class Of Banded Matrices, Yerlan Amanbek, Zhibin Du, Yogi Erlangga, Carlos M. Da Fonseca, Bakytzhan Kurmanbek, António Pereira

All Works

© 2020 Yerlan Amanbek et al., published by De Gruyter 2020. In this short note, we provide a brief proof for a recent determinantal formula involving a particular family of banded matrices.

Investigating Bias In Facial Analysis Systems: A Systematic Review, Ashraf Khalil, Soha Glal Ahmed, Asad Masood Khattak, Nabeel Al-Qirim

All Works

© 2013 IEEE. Recent studies have demonstrated that most commercial facial analysis systems are biased against certain categories of race, ethnicity, culture, age and gender. The bias can be traced in some cases to the algorithms used and in other cases to insufficient training of algorithms, while in still other cases bias can be traced to insufficient databases. To date, no comprehensive literature review exists which systematically investigates bias and discrimination in the currently available facial analysis software. To address the gap, this study conducts a systematic literature review (SLR) in which the context of facial analysis system bias is …

Investigating Environmental Performance Management, Vipin Gupta, Yi Zhang

All Works

© 2020, Fundacao Escola de Comercio Alvares Penteado. All rights reserved. Purpose – Even though there is a growing recognition of the externality costs of low environmental performance by firms, there continue to be significant inter-firm differentials in environmental performance management. We build on the theories of strategic management to inquire into the factors contributing to these differentials. Design/methodology/approach – Using a 2015 survey sample of Chinese small and medium enterprises, we empirically investigate the alternative thesis that the profit maximization motive constitutes the appropriate heuristic for the performance management of corporate social responsibility factors. Findings –The green capability of …

A Correlation Study Of Parental Involvement And Student Outcomes In A Georgia School District, Courtney T. Flournoy

Theses and Dissertations

The purpose of this study was to determine if a statistically significant association existed between the responses of parents of middle school students in a Georgia public school district on a parental involvement survey and three variables: eligibility of students to receive free or reduced-price lunch parental marital status, and parental education level.

This study was initiated because of a persistent problem of low academic achievement of the middle school students. There is extensive research related to the importance of parental involvement and the effect of this involvement on student achievement. However, prior to the implementation of this study little …

The Teacher’S Role In Increasing Student Engagement In High School Social Studies Courses, Quarnitra L. Price

Theses and Dissertations

This qualitative case study explored (a) how teaching practices of high school teachers influence student engagement levels and performance in social studies classes, (b) how teachers might deliver more student relatable social studies content, (c) how teachers might help students relate to and become more engaged with important social studies concepts, and (d) how teachers can motivate students to become well-informed and fully engaged citizens. This study also examined existing barriers that prevent students from learning or engaging in social studies coursework.

Research findings suggest teachers play essential roles in how students perceive social studies content and respond to lessons …

Understanding Byod Implementation Experiences Of School Teachers And Administrators: A Phenomenological Perspective, Sophia Lafayette-Lause

Theses and Dissertations

The use of technology to enhance instruction and learning is a daily expectation in public school classrooms throughout the State of Michigan and the United States. Schools are implementing bring your own device/bring your own technology (BYOD/BYOT) programs to meet the demand of providing students access to technology. As a result, students are bringing personal communication devices (cell phones, smartphones, tablets) to school in ever-increasing numbers. Students are using these devices in the classroom for a variety of purposes including the use of social media applications. However, school district policies have not been thoroughly updated to address the implementation of …

Alternate Route - An Examination Of Alternatively Certified Teachers' Job Satisfaction And Self-Efficacy, Adrienne W. Mcelroy

Theses and Dissertations

This applied dissertation was designed to examine the job satisfaction and self-efficacy of alternatively certified teachers in a rural, midsize, public school district in Florida. The examination will include the relationship between job satisfaction and self-efficacy. The results of this study aim to provide school officials with a better understanding of the role alternatively certified teachers fill during the teacher shortage facing our nation.

The researcher utilized two existing surveys. The Job Satisfaction Survey (JSS) was developed by Paul Spector. The JSS further delineates job satisfaction into two subscales: intrinsic and extrinsic job satisfaction. The Teachers’ Sense of Efficacy Scale …

A Comparative Study On Parental Involvement, Roldens Paulynice

Theses and Dissertations

Parental involvement has been found by many researchers to be important in student academic success. However, many school leaders are challenged to get many parents actively involved in their child’s education. At the research site, for example, the researcher observed that many parents do not get actively involved in their child’s education, and they miss the school parental meeting or programs. If this problem is solved, school staff members or leaders would care and would benefit from it. The purpose of this study was to explore the perception of educators on the impact of parental involvement on student success and …

Status Of Women’S Leadership In The Instructional Technology Field, 2014-2018, Kerrian A. Gordon

Theses and Dissertations

The purpose of this study was to assess the leadership status of women in the instructional technology field during the period 2014-2018. Five areas of leadership were examined (a) faculty rank in instructional technology programs, (b) positions on editorial boards of leading instructional technology journals, (c) publications in leading instructional technology journals, (d) presentations at leading conferences in the instructional technology field, and (e) leadership of four leading professional organizations in the field.

The study utilized a quantitative content analysis research method. A code sheet was developed for the five areas of leadership. Research Question 1: What was the leadership …

Lived Experiences Of Teachers In Professional Learning Communities In Transient School Environments, Katelyn Marie Jones

Theses and Dissertations

Professional learning communities (PLCs) are increasingly being used in South Korean elementary schools in order to improve student learning and the quality of teaching. This new educational trend is being funded by provincial offices of education but facing some difficulties in implementation and sustainability. School leaders, teacher leaders, and teachers are struggling to understand the purpose of professional learning communities and how to use them to improve student learning and the quality of teaching. In addition, South Korean elementary school teachers are transient, as they rotate to new schools every two to three years. This impacts their ability to build …

Keep Teaching Science! Successful Strategies To Adapt K–12 Science Experiences For Distance Learning, Wested, Jeanne Norris

Institute for School Partnership: Research & Publications

Webinar: The sudden shift to distance and hybrid learning due to the COVID-19 pandemic has created a need to identify virtual and at-home science experiences that ensure students keep learning science in meaningful ways. Anchored in the vision of the Next Generation Science Standards (NGSS) and A Framework for K-12 Science Education, a new NextGenScience resource highlights ways materials designed for in-person NGSS learning can be adapted for virtual or at-home settings while maintaining or enhancing best practices.

Shifting Courses: Achieving Equity In High School Stem, 100kin10, Jeanne Norris

Institute for School Partnership: Research & Publications

Strategies to achieve science equity through high school course offerings, supporting teachers to facilitate active and applied STEM learning, and creating systems to ensure equitable teaching and learning with examples from mySci.

Student Collaborations In Introductory Statistics Courses; A Network Study, Isabel S. Nowinowski

Open Access Master's Theses

Generation Z, also known as iGen, (individuals born between the mid-1990s and early 2010s), characterized as tech-savvy, independent, and visual, is beginning to graduate college and enter the workforce. While significant research effort has focused on understanding the learning preferences of the preceding Millennial generation (individuals born between the early 1980s and mid-1990s), less is known about the way technology has influenced the educational expectations and learning preferences of Generation Z. A deeper and broader understanding of the way this generation learns would allow universities to modify and enhance course structures and teaching methodologies to suit this incoming generation of …

Graph Models With Missing Data Techniques For Applications In Drug Use Networks, Valerie Ryan

Open Access Master's Theses

Problem: Social context is important in the reduction of engagement in potential risk behaviors, particularly among people who use injection drugs (PWID). People engage in risky behavior together via sharing needles or other drug use equipment and/or though risky sex. If we can identify which attributes are related to increased (or decreased) odds of engaging in risky behavior with others, we can use those results to better target HIV risk reduction interventions among PWID.

Methods: Exponential random graph models (ERGMs) were used to model the probability that there is a tie or connection between people in a network …

The Impacts Of Hearing Loss On Social-Emotional Health, Lili Lan Lebrun Visgilio

Open Access Master's Theses

According to the World Health Organization, over 900 million people are expected to have disabling hearing loss by 2050. Most studies about hearing loss published thus far have focused on the impacts hearing loss has on adults above the age of 60. However, this study examines the relationship between hearing loss and social-emotional health in adults between the ages of 21 and 50. Literature describing the impact of hearing loss on the social-emotional health of young and middle aged adults is sparse. This study uses data from the 2011 wave of the National Health Interview Survey (NHIS) obtained via the …