Digital Commons Network^™

Pyrrolidinyl Peptide Nucleic Acid Probe Capable Of Crosslinking With Dna, Penthip Muangkaew

Chulalongkorn University Theses and Dissertations (Chula ETD)

DNA interstrand cross-linking (ICL) is a phenomenon in which two strands of the DNA (most often as part of the same DNA duplex) bind together via a covalent bond. This process prevents the DNA strand dissociation, which is essential for its biological functions, and thus is extremely damaging to cells. To overcome the problem of non-specificity associated with general DNA cross-linking agents, a cross-linkable probe in which the reactive group is placed on the probe that can specifically recognize part of the DNA target. The strong binding affinity and biological stability of the pyrrolidinyl peptide nucleic acid (acpcPNA) inspired us …

ระบบควบคุมเกมแอคชั่นแนวยิงมุมมองบุคคลที่หนึ่งที่ผสานระบบต่อประสานระหว่างสมองกับคอมพิวเตอร์เข้าไปด้วย, ศุภชัย เต็งตระกูล

Chulalongkorn University Theses and Dissertations (Chula ETD)

เทคโนโลยีการต่อประสานระหว่างสมองกับคอมพิวเตอร์ (Brain Computer Interface: BCI) ที่ใช้สัญญาณ Electroencephalogram (EEG) เป็นเทคโนโลยี BCI ที่เหมาะกับการนำมาใช้ควบคุมเกมที่สุดเพราะความสะดวกและปลอดภัยต่อผู้ใช้ แต่แม้ว่าจะมีการศึกษาประเด็นนี้กันมานานหลายปี การออกแบบเกม BCI ก็ยังไม่สามารถก้าวข้ามจุดอ่อนพื้นฐานของสัญญาณ EEG ได้ ส่งผลให้ตัวเกมที่ออกมาขาดระบบการเล่นที่น่าสนใจเมื่อเทียบกับเกมอื่นในท้องตลาด งานวิจัยชิ้นนี้จึงเสนอระบบควบคุมแบบใหม่ที่นำระบบ BCI ที่ใช้วิธีการจำแนก Steady-State Visually Evoked Potential (SSVEP) ที่ดีที่สุดในปัจจุบันอย่าง Riemannian มารวมกับอุปกรณ์ควบคุมอีก 3 อย่าง ได้แก่ คีย์บอร์ด (Keyboard) เมาส์ (Mouse) และเครื่องตรวจจับตำแหน่งการมอง (Eye Tracker) นอกจากนั้นงานวิจัยชิ้นนี้ยังเสนอเกมแอคชั่นแนวยิงมุมมองบุคคลที่หนึ่ง (Action First-person Shooter: Action FPS) ที่ถูกพัฒนามาให้ทำงานร่วมกับระบบควบคุมดังกล่าวเพื่อสร้างประสบการณ์การเล่นเกมด้วยระบบ BCI ที่ดียิ่งขึ้น โดยตัวเกมจะมี 3 ฟีเจอร์ (Features) สำคัญ ได้แก่ การชะลอเวลา การไฮไลต์ตัวกระตุ้น SSVEP ที่ถูกมองอยู่ และการออกคำสั่ง SSVEP ให้โดยอัตโนมัติเมื่อผู้เล่นไม่สามารถใช้ได้แลกกับการไม่ได้รับของรางวัลบางอย่าง จากผลการทดสอบของผู้ร่วมทดสอบ 10 คนพบว่า ผู้ร่วมทดสอบทุกคนสามารถใช้คำสั่งผ่านเครื่องตรวจจับตำแหน่งการมองได้ดีในช่วงแรก แต่เมื่อเวลาผ่านไปกลับใช้คำสั่งได้ไม่ดีเท่าเดิม ส่วนการใช้คำสั่งผ่าน SSVEP ผลที่ออกมาแตกต่างกันอย่างมากในแต่ละคำสั่ง คำสั่งที่ผู้ร่วมทดสอบใช้สำเร็จด้วยตัวเองมากที่สุดมีโอกาสใช้สำเร็จอยู่ที่ 71% ส่วนคำสั่งที่ผู้ร่วมทดสอบใช้สำเร็จด้วยตัวเองน้อยที่สุดมีโอกาสเพียง 49% เท่านั้น โดยรวมแล้วระบบควบคุมนี้ถือว่ามีความสามารถเพียงพอที่จะนำไปใช้ควบคุมเกมแนว FPS ได้ แต่ยังต้องปรับปรุงเรื่องความคงที่ของประสิทธิภาพของระบบ BCI และทางเลือกเกี่ยวกับการควบคุมด้วยเครื่องตรวจจับตำแหน่งการมอง และถึงแม้ว่าปัญหาเหล่านี้จะส่งผลให้ผู้ร่วมทดสอบไม่ได้รับความสะดวกสบายในการเล่นอยู่บ้าง แต่ผู้ร่วมทดสอบ 90% ก็ยังคงสนุกกับตัวเกมอยู่ เนื่องจากฟีเจอร์ของตัวเกมมีส่วนช่วยให้ผู้ร่วมทดสอบรู้สึกว่ายังสามารถควบคุมเกมได้

Artificial Intelligence And Copyright Law In Singapore A Study On The Protection Of Compilations And Databases Arranged By Ai-Systems, Sella Say

Chulalongkorn University Theses and Dissertations (Chula ETD)

While the capability of artificial intelligence ("AI") gains remarkable momentum in creating copyrightable materials – the questions regarding the eligibility of these new creations, at the moment, are broadly discussed and posed challenges to the regime. The problem of how we fit the conventional notion of authorship and the condition of originality for AI-generated works remains a controversial topic. Some might suggest that subject matter created by AI should not be granted copyright protection on the presumption that AI is not a human who could treat as authors of works. At the same time, other supportive claims that the first …

Probing Vibrational Wave Packets In Organophoshorous Molecules Using Femtosecond Time-Resolved Mass Spectrometry (Ftrms), Derrick Ampadu Boateng

Theses and Dissertations

The study of organophosphorus and nitroaromatic compounds is essential due to their suitability as models for understanding the dynamics of radiation induce damage to DNA sugar-phosphate backbone, and the detection of chemical warfare agents as well as nitroaromatic explosives (such as TNT). The ultrafast dynamics of these polyatomic radicals were studied using femtosecond time-resolved mass spectrometry (FTRMS), a versatile method that is capable of monitoring the ultrafast dynamics of rapid dissociation in the gas phase after the removal of an electron. The method uses a technique called pump-probe, which makes use of two time-delayed laser pulses. In this work, the …

A Mixed Public-Private Partnership Approach For Cyber Resilience Of Space Technologies, Bilge Karabacak, Gokhan Ikitemur, Andy Igonor

All Faculty and Staff Scholarship

Governments today emphasize space systems as critical infrastructures. Many vital services, including communications, transportation, and maritime operations, depend on space systems. Cyber systems represent an essential component that enables effective functioning, configuration, and monitoring of technological space services. Space systems possess unique vulnerabilities and properties that attract the attention of hackers, and often with varying motivations. The private sector increasingly participates in the production of space technologies, and as a result of the differences in perceptions and priorities of governments and the private sector, handling the challenges of governance as it relates to the cybersecurity of space systems presents an …

No Soldiers Left Behind: An Iot-Based Low-Power Military Mobile Health System Design, James Jin Kang, Wencheng Yang, Gordana Dermody, Mohammadreza Ghasemian, Sasan Adibi, Paul Haskell-Dowland

Research outputs 2014 to 2021

© 2013 IEEE. There has been an increasing prevalence of ad-hoc networks for various purposes and applications. These include Low Power Wide Area Networks (LPWAN) and Wireless Body Area Networks (WBAN) which have emerging applications in health monitoring as well as user location tracking in emergency settings. Further applications can include real-Time actuation of IoT equipment, and activation of emergency alarms through the inference of a user's situation using sensors and personal devices through a LPWAN. This has potential benefits for military networks and applications regarding the health of soldiers and field personnel during a mission. Due to the wireless …

A Review Of Nyoongar Responses To Severe Climate Change And The Threat Of Epidemic Disease—Lessons From Their Past, Francesca Robertson, Jason Barrow

Research outputs 2014 to 2021

Nyoongar people have lived in the South West of Western Australia for at least 50,000 years. During that time, they experienced significant climate change, including wide variations in temperature and rainfall, and hundreds of metres’ difference in sea levels. Nyoongar people have a long memory, and climate change is described in their stories and in the knowledge they hold about how life was lived in earlier times. There are artifacts and places that have been manipulated to be productive despite severe drought. COVID-19 disrupted the writing of this article, and the authors felt it appropriate to include Nyoongar responses to …

A Wide Angle Multiple Beam Lens For Convex Conformal Arrays, Rasi̇me Uyguroglu, Abdullah Y. Oztoprak

Turkish Journal of Electrical Engineering and Computer Sciences

Multifocal lenses have been widely used as multiple beam forming networks for linear and planar arrays, but are not suitable for large convex conformal arrays as they are not physically realizable for wide angle beams. In this study, a new lens design especially suitable for convex conformal arrays is introduced. The new lens has no perfect focal points, but there are a certain number of correct phases in each of the beam directions. The directional patterns of the radiating elements are also taken into account to improve radiation patterns for desired directions. It has been shown that the new lens …

Measurement Based Threat Aware Drone Base Station Deployment, Alper Akarsu, Tolga Gi̇ri̇ci̇

Turkish Journal of Electrical Engineering and Computer Sciences

Unmanned aerial vehicles are gaining importance with many civilian and military applications. Especially the surveillance, search/rescue, and military operations may have to be carried out in extremely constrained environments. In such scenarios, drone base stations (DBSs) have to provide communication services to the people at the ground. The ground users may have no access to the global positioning system (GPS); therefore, their locations have to be estimated using alternative techniques. Besides there may be threats in the environment, such as shooters. In this work, we address the problem of optimal DBS deployment under the aforementioned constraints. We propose a novel …

Analysis Of Condition Number And Position Estimation Error For Multiangulationposition Estimation System, Sa'id Musa Yarima, Ahmad Zuri Sha'ameri, Abdulmalik Shehu Yaro

Turkish Journal of Electrical Engineering and Computer Sciences

A passive wireless positioning system could be used to detect the location of low-level airborne targets such as drones or unmanned aircraft systems from the electromagnetic emission detected at spatially deployed ground receiving stations (GRSs). The multiangulation system proposed in this paper makes use of the angle of arrival (AOA) of the transmitted signal from the target to estimate its position through a 2-stage process. The AOA is the positiondependent signal parameter (PDSP) obtained from the target emission in the first stage, and using the PDSP and GRSs, the target location is estimated in the second stage by the angulation …

Global Research Productivity In Nuclear Waste Management: A Scientometric Analysis, Fayaz Ahmad Loan, Ufaira Yaseen

Library Philosophy and Practice (e-journal)

Scientometrics has emerged as one of the prominent and fast-growing fields in the Library and Information Sciences. The present study also deals with the scientometric aspect of one of the prominent fields of Nuclear Science and Technology i.e. Nuclear Waste Management. The data for the said study has been collected from the Web of Science database over the period 1989-2019. The results reveal that a total of 1824 publications have been published on Nuclear Waste Management and the highest number has been contributed by the USA (23.7%) of the total global output. Most of the Nuclear Waste Management literature …

Research On Simulation Platform For Equipment System Analysis, Yuping Li, Shaojie Mao, Zhenqi Ju, Zhou Fang, Guoqiang Yan

Journal of System Simulation

Abstract: With the development of equipment construction from platform-centric to network-centric, simulation analysis of equipment system is an important means and tool to support the transformation and development of equipment construction under the condition of multi-task joint operation. Starting from the requirement of system simulation analysis, a cloud-based equipment system simulation architecture is proposed to realize flexible and configurable simulation environment according to task requirements; and a high-performance simulation framework is conducted, which provides strong support for different application modes, such as parallel hyper-real-time and distributed simulation deduction. The unified description, organization and management method of model and data resources …

Research On The Simulation Technology For Multi-Aerocraft Cooperative Guidance, Li Jing, Han Jian, Zhang Qing

Journal of System Simulation

Abstract: The formal system of multi- aerocraft cooperative simulation system is identified as the discrete event system & different equation system specifications (DEV&DESS) through the analysis of the composition and running mechanism. The running control problem of cooperative simulation system is transformed into simulation control problem of a specific DEV&DESS system. A dynamic operation control method for cooperative guidance simulation system based on coordinator is proposed, and this method is validated by real-time mathematical simulation experiments.

Design Of Combat Simulation And Visualization System Of Hypersonic Vehicle, Yu Ying, Weidong Liang, Xiujuan Zhu, Jianlin Wang, Wang Ling

Journal of System Simulation

Abstract: Based on the thought of combat simulation, the system of combat simulation and visualization is designed to show the typical combat mode and the characteristics of near space vehicles. Taking the aircraft attacking a fixed target as an example, the formulation of combat plan, the deployment of forces and the design of combat process of both sides are realized. On the one hand, a combat simulation platform which covers various combat modes of attack and defense is established. On the other hand, the whole process of combat confrontation of hypersonic vehicles is presented, driven by the real-time simulation data. …

Decision-Making Method For Formulating Spares Reserve Scheme Based On Deep Neural Network, Yunjing Zhang, Guangming Tang, Xiaoyu Xu

Journal of System Simulation

Abstract: Spare parts classification is important for spare parts storage and is a key part of spare parts decision-making activities. This paper analyzes the factors affecting the reserve scheme of wartime spares. Then by analyzing the inherent attributes of wartime spares, two methods of spare parts classification are proposed to determine the variety and quantity of wartime spares based on deep neural network: (1) Ranks wartime spares according to their importance. A relatively simple deep neural network is used to analyze every attribute of the wartime spares in turn; (2) Inputs all the attributes of wartime spares into a relatively …

Research On Real-Time Simulation Platform Architecture Based On Multi-Core Scheduling, Jiahui Tong, Liu Jin, Jinyuan Zhang, Yongxiang Zhang

Journal of System Simulation

Abstract: With the development of weapon equipment and support training system, new requirements are added to architecture of simulation platform. Considering the overall architecture, hardware architecture and software system, combining the requirement of experiment and training, a real-time simulation platform architecture with network and distributed system characteristics is proposed. The platform provides embedded computing nodes. The computing nodes and network are strong real-time.

Characteristic Index Digging Of Combat Sos Capability Based On Machine Learning, Yongli Yang, Xiaofeng Hu, Rong Ming, Xiaojing Yin, Wenxiang Wang

Journal of System Simulation

Abstract: Aiming at the two difficulties in characteristic index digging of combat system of systems (CSoS), namely operation data generation and digging method selection, this paper proposes a new digging method, that is, using the simulation testbed to generate operation data, then adopting the machine learning to dig characteristic index. Two methods of characteristic index digging based on machine learning are researched: (1) the method based on network convergence, divides the communities for fundamental indexes based on their relationship, and obtains the characteristic indexes by principal component analysis (PCA); this method is applied to dig the characteristic indexes of …

Overrepresentation Of The Underrepresented: Gender Bias In Wikipedia, Anna Marinina

Honors College Theses

The goal of our research is to determine if gender bias exists in Wikipedia. Wikipedia is a very large dataset that has been used to train artificial intelligence models. If a dataset that is being used for this purpose is biased, then the artificial intelligence model that was trained with it will be biased as well, therefore making biased decisions. For this reason, it is important to explore large datasets for any potential biases before they are used in machine learning. Since Wikipedia is ontologically structured, we used graph theory to create a network of all of the website’s categories …

Review Of Evaluation Methods Of Contribution Rate To System Of Systems, Xiaojing Yin, Xiaofeng Hu, Rong Ming, Haiyang Liu, Yongli Yang

Journal of System Simulation

Abstract: The warfare is the encounter of system of systems (SoS). The evaluation on the contribution rate to SoS is of great importance to the development of operational SoS as a measure of the evaluating units’ contribution to SoS. In this paper the basic concept and classification of the contribution rate to operational SoS are elaborated; its connotation and nature are analyzed; and the current research status and the technical difficulties in this research field are summarized. The development trend is predicted, which provides a useful reference for relative research.

Evaluation Of Stealth Aircraft Approaching Support Jamming Performancefrom Detection Probability, Bao Lei, Chunyang Wang, Huiyong Zeng, Bai Juan

Journal of System Simulation

Abstract: Aiming at the problem of how to construct an effective model to evaluate the reasonableness of detection performance when a radar detects a third-generation aircraft covered by an approaching support jamming performance of stealth aircraft, a stealth aircraft jamming model based on diving to the near support track is proposed. After calculating the aircraft attitude angle, the time-varying dynamic RCS series are extracted. Using Swerling IV distribution, the characteristics of radar instantaneous detection probability time-varying in penetration jamming between normal flight and stealth aircraft are studied and compared. Simulation results show that the radar detection probability can be reduced …

Review Of The Weapon System Simulation Technology, Yan Jie, Wenxing Fu, Zhang Kai, Chen Kang, Xiaofei Chang, Zhang Tong, Bin Fu, Sijie Wu

Journal of System Simulation

Abstract: Nowadays, the simulation technology are playing a more and more important role in the whole life cycle of weapon system design and application. In this paper, the state of the simulation technology in weapon system design and application is reviewed. And then, to meet the requirement of some brand new warfare styles like combat in complex environment, man-machine cooperation, cyberspace operation, intelligent system operation, combat training, new concepts of weapon simulation are developed, new demand of weapon simulation is introduced and new problems that must be solved are discussed. At last, the necessity and development trend of the …

Building Mof Nanocomposites With Oxidized Graphitic Carbon Nitride Nanospheres: The Effect Of Framework Geometry On The Structural Heterogeneity, Dimitrios A. Giannakoudakis, Teresa J. Bandosz

Publications and Research

Composite of two MOFs, copper-based Cu-BTC (HKUST-1) and zirconium-based Zr-BDC (UiO-66), with oxidized graphitic carbon nitride nanospheres were synthesized. For comparison, pure MOFs were also obtained. The surface features were analyzed using x-ray diffraction (XRD), sorption of nitrogen, thermal analysis, and scanning electron microscopy (SEM). The incorporation of oxidized g-C3N4 to the Cu-BTC framework caused the formation of a heterogeneous material of a hierarchical pores structure, but a decreased surface area when compared to that of the parent MOF. In the case of UiO-66, functionalized nanospheres were acting as seeds around which the crystals grew. Even though the MOF phases …

Progression Magazine, 2019 Fall/Winter, Coastal Carolina University

Progression Magazine

Magazine of the College of Science at Coastal Carolina University.

Bats Of The Loess Hills Ecoregion Of Southeast Nebraska, Virgil Brack Jr, Dale W. Sparks, Darwin C. Brack

The Prairie Naturalist

We surveyed bats at 49 sites in the Loess Hills Ecoregion of southeastern Nebraska, along the western edge of the eastern forest biome in eastern Richardson, Nemaha, and Otoe counties. We completed this study shortly before the northern long-eared bat (Myotis septentrionalis) was listed by the United States Fish and Wildlife Service under the Endangered Species Act. The expectation of listing, along with potential presence of the endangered Indiana bat (Myotis sodalis), motivated the study. We captured 183 bats of five species: eastern red bat (Lasiurus borealis) (n = 103; 56 %), big brown …

Building Datasets From Publicly Accessible Social Media Images For Biometric Analysis, Giordano Roberto Benitez Torres

Theses and Dissertations

The world is developing at a rapid pace, and some of its advancement can be accredited to technological innovations that are affecting many aspects of society. A field within computer science that is increasingly reaching many industries is Biometrics, specifically the area face recognition. Researchers, scientists, and organizations actively try to improve the performance of tools and algorithms. Nevertheless, for it to occur, there is a need for high-quality datasets to test and develop new techniques. Never had humanity, in the course of the history of civilization, produced massive amounts of data as it currently does. Social media networks play …

The Prairie Naturalist, Vol. 51, Issue 2, December 2019

The Prairie Naturalist

45 EDITOR’S NOTE: Final Thoughts as Editor-in-Chief, by Christopher N. Jacques

RESEARCH ARTICLES

47 Bats of the Loess Hills Ecoregion of Southeast Nebraska, by Virgil Brack, Jr., Dale W. Sparks, and Darwin C. Brack

58 Serological Survey and Pathogen Exposure of Adult Female White-tailed Deer in the Western Dakotas, by Katherine L. Moratz, Bailey S. Gullikson, Eric S. Michel, Daniel M. Grove, Jonathan A. Jenks, and William F. Jensen

68 Factors Limting Reintroduced Plains Topminnow, Fundulus sciadicus, Populations in Central Great Plains Streams, by Joseph D. Thiessen, Keith D. Koupal, and Casey W. Schoenebeck

NOTES

77 Recent Observations of Water …

Antarctic Deep Sea Coral And Tropical Fungal Endophyte: Novel Chemistry For Drug Discovery, Anne-Claire D. Limon

USF Tampa Graduate Theses and Dissertations

Considered the pulse controlling the biological interactions and contributing to the ecological survival of organisms, natural products have intrigued, challenged, and stimulated the scientific and non-scientific minds for millennia. Drug resistance and the lack of suitable potent drugs against neglected tropical diseases further motivate the biological activity assessment of these secondary metabolites, when possible.

This thesis describes the chemical investigation of two marine organisms and the elucidation of eight novel structures.

The study of a deep sea Antarctic coral unveils six novel terpenoid structures from three different molecular classes: sesquiterpenoid alcyopterosins, a triterpene steroid, and three prostaglandins. While mass availability …

System Analysis Method Based On Simulation Big Data, Guangya Si, Wang Fei, Liu Yang

Journal of System Simulation

Abstract: Wargaming and exploratory simulation with large-scale simulation systems produce massive simulation data. These data contain many complexity patterns of war, and are significant samples for studying the mechanism of war. Based on the definition of simulation big data, an analysis framework based on simulation big data is proposed, which is divided into three levels: simulation environment and data planning, big data acquisition and storage, and analysis and mining. The simulation data planning and analysis and mining are briefly introduced.

Introduction Of A Hybrid Monitor For Cyber-Physical Systems, J. Ceasar Aguma, Bruce M. Mcmillin, Amelia Regan

Computer Science Faculty Research & Creative Works

Computing systems and mobile technologies have changed dramatically since the introduction of firewall technology in 1988. The internet has grown from a simple network of networks to a cyber and physical entity that encompasses the entire planet. Cyber-physical systems(CPS) now control most of the day to day operations of human civilization from autonomous cars to nuclear energy plants. While phenomenal, this growth has created new security threats. These are threats that cannot be blocked by a firewall for they are not only cyber but cyber-physical. In light of these cyber-physical threats, this paper proposes a security measure that promises to …

Integrating Geochronologic And Instrumental Approaches Across The Bengal Basin, Carol Wilson

Faculty Publications

Constraining time is of critical importance to evaluating the rates and relative contributions of processes driving landscape change in sedimentary basins. The geomorphic character of the field setting guides the application of geochronologic or instrumental tools to this problem, because the viability of methods can be highly influenced by geomorphic attributes. For example, sediment yield and the linked potential for organic preservation may govern the usefulness of radiocarbon dating. Similarly, the rate of sediment transport from source to sink may determine the maturity and/or light exposure of mineral grains arriving in the delta and thus the feasibility of luminescence dating. …