# Physical Sciences and Mathematics Commons™

## All Articles in Physical Sciences and Mathematics

175845 full-text articles. Page 3 of 4602.

Writing Mathematical Proofs, 2018 Plymouth State University

#### Writing Mathematical Proofs, Justin Wright

##### Open Educational Resources

This text is intended to serve as an IBL style workbook to be used in an undergraduate introductory proof writing course. It covers direct, contrapositive, contradiction, biconditional, existence, uniqueness, induction, and set equality proofs while also covering fundamental topics from number theory, elementary real analysis, functions, and sets with infinite cardinality. It is assumed that the audience has attained a degree of mathematical maturity and has had some exposure to sets and logic, but knowledge of calculus or linear algebra is not required.

2018 Wesleyan University

#### Multivariate Spectral Analysis Of Crism Data To Characterize The Composition Of Mawrth Vallis, Melissa Luna

##### Melissa Luna

No abstract provided.

2018 University of Nebraska at Omaha

#### Intelligent And Human-Aware Decision Making For Semi-Autonomous Human Rehabilitation Assistance Using Modular Robots, Anoop Mishra

##### Student Research and Creative Activity Fair

Modular Self-reconfigurable Robots (MSRs) are robots that can adapt their shape and mobility while performing their operations. We are developing an MSR called MARIO (Modular Robots for Assistance in Robust and Intelligent Operations) to assist patients with spinal cord injury in performing daily living tasks. In this research, we are investigating computational techniques that will enable MARIO to autonomously adapt its shape while performing an assistive task, and, while remaining aware of the human user’s satisfaction in receiving assistance from MARIO. We are developing semi-autonomous decision making techniques within a computational framework called shared autonomy that will adapt MARIO ...

4,5-Dimethoxy-2-Nitrobenzohydrazides And 1-(1-Benzylpiperidin-4-Yl)Ethan-1-Ones As Potential Antioxidant/Cholinergic Endowed Small Molecule Leads, 2018 Trinity University

#### 4,5-Dimethoxy-2-Nitrobenzohydrazides And 1-(1-Benzylpiperidin-4-Yl)Ethan-1-Ones As Potential Antioxidant/Cholinergic Endowed Small Molecule Leads, Rukhsar Banu, Jason Gerding, Cynthia Franklin, Donald Sikazwe, William Horton, Marianna Török, Julian Davis, Kwan H. Cheng, Muziya Nakazwe, Bereket Mochona

##### Physics and Astronomy Faculty Research

The objective of this research is to generate leads for developing our ultimate poly-active molecules with utility in central nervous system (CNS) diseases. Indeed, poly-active molecules capable of mitigating brain free radical damage while enhancing acetylcholine signaling (via cholinesterase inhibition) are still being sought for combating Alzheimer’s disease (AD). We differentiate “poly-active” agents from “multi-target” ones by defining them as single molecular entities designed to target only specific contributory synergistic pharmacologies in a disease. For instance, in AD, free radicals either initiate or act in synergy with other pharmacologies, leading to disease worsening. For this preliminary report, a total ...

In Operando Mechanism Analysis On Nanocrystalline Silicon Anode Material For Reversible And Ultrafast Sodium Storage, 2018 University of Wollongong

#### In Operando Mechanism Analysis On Nanocrystalline Silicon Anode Material For Reversible And Ultrafast Sodium Storage, Lei Zhang, Xianluo Hu, Chaoji Chen, Haipeng Guo, Xiaoxiao Liu, Gengzhao Xu, Haijian Zhong, Shuang Cheng, Peng Wu, Jiashen Meng, Yunhui Huang, Shi Xue Dou, Hua-Kun Liu

##### Australian Institute for Innovative Materials - Papers

Presently, lithium-ion batteries (LIBs) are the most promising commercialized electrochemical energy storage systems. Unfortunately, the limited resource of Li results in increasing cost for its scalable application and a general consciousness of the need to find new type of energy storage technologies. Very recently, substantial effort has been invested to sodium-ion batteries (SIBs) due to their effectively unlimited nature of sodium resources. Furthermore, the potential of Li/Li+ is 0.3 V lower than that of Na/Na+, which makes it more effective to limit the electrolyte degradation on the outer surface of the electrode.[1] Nevertheless, one major obstacle ...

A Model Of Competition Between Perpetual Software And Software As A Service, 2018 Singapore Management University

#### A Model Of Competition Between Perpetual Software And Software As A Service, Zhiling Guo, Dan Ma

##### Research Collection School Of Information Systems

Software as a service (SaaS) has grown to be a significant segment of many software product markets. SaaS vendors, which charge customers based on use and continuously improve the quality of their products, have put competitive pressure on traditional perpetual software vendors, which charge a licensing fee and periodically upgrade the quality of their software. We develop an analytical model to study the competitive pricing strategies of an incumbent perpetual software vendor in the presence of a SaaS competitor. We find that, depending on both the SaaS quality improvement rate and the network effect, the perpetual software vendor adopts one ...

2018 California State University – San Bernardino

#### Virtualized Cloud Platform Management Using A Combined Neural Network And Wavelet Transform Strategy, Chunyu Liu

##### Electronic Theses, Projects, and Dissertations

This study focuses on implementing a log analysis strategy that combines a neural network algorithm and wavelet transform. Wavelet transform allows us to extract the important hidden information and features of the original time series log data and offers a precise framework for the analysis of input information. While neural network algorithm constitutes a powerfulnonlinear function approximation which can provide detection and prediction functions. The combination of the two techniques is based on the idea of using wavelet transform to denoise the log data by decomposing it into a set of coefficients, then feed the denoised data into a neural ...

Studies Of Geometrical Proﬁling In Fabricated Tapered Optical Fbers Using Whispering Gallery Modes Spectroscopy, 2018 Dublin Institute of Technology

#### Studies Of Geometrical Proﬁling In Fabricated Tapered Optical Fbers Using Whispering Gallery Modes Spectroscopy, Vishnu Kavungal, Gerald Farrell, Qiang Wu, Arun Kumar Mallik, Yuliya Semenova

##### Articles

This paper experimentally demonstrates a method for geometrical proﬁling of asymmetries in fabricated thin microﬁber tapers with waist diameters ranging from ∼10 to ∼50µm with submicron accuracy. The method is based on the analysis of whispering gallery mode resonances excited in cylindrical ﬁber resonators as a result of evanescent coupling of light propagating through the ﬁber taper. The submicron accuracy of the proposed method has been veriﬁed by SEM studies. The method can be applied as a quality control tool in fabrication of microﬁber based devices and sensors or for ﬁne-tuning of microﬁber fabrication set-ups.

A Model Of Competition Between Perpetual Software And Software As A Service, 2018 Singapore Management University

#### A Model Of Competition Between Perpetual Software And Software As A Service, Zhiling Guo, Dan Ma

##### Research Collection School Of Information Systems

Software as a service (SaaS) has grown to be a significant segment of many software product markets. SaaS vendors, which charge customers based on use and continuously improve the quality of their products, have put competitive pressure on traditional perpetual software vendors, which charge a licensing fee and periodically upgrade the quality of their software. We develop an analytical model to study the competitive pricing strategies of an incumbent perpetual software vendor in the presence of a SaaS competitor. We find that, depending on both the SaaS quality improvement rate and the network effect, the perpetual software vendor adopts one ...

Splish-Splash: Center Of Mass, Stability, And A Fun Pool Toy, 2018 Providence College

#### Splish-Splash: Center Of Mass, Stability, And A Fun Pool Toy, Seth T. Ashman

##### Seth Ashman

No abstract provided.

Edos: Edge Assisted Offloading System For Mobile Devices, 2018 College of New Jersey

#### Edos: Edge Assisted Offloading System For Mobile Devices, Hank H. Harvey, Ying Mao, Yantian Hou, Bo Sheng

##### Yantian Hou

Offloading resource-intensive jobs to the cloud and nearby users is a promising approach to enhance mobile devices. This paper investigates a hybrid offloading system that takes both infrastructure-based networks and Ad-hoc networks into the scope. Specifically, we propose EDOS, an edge assisted offloading system that consists of two major components, an Edge Assistant (EA) and Offload Agent (OA). EA runs on the routers/towers to manage registered remote cloud servers and local service providers and OA operates on the users’ devices to discover the services in proximity. We present the system with a suite of protocols to collect the potential ...

A Graphical Digital Personal Assistant That Grounds And Learns Autonomously, 2018 Boise State University

#### A Graphical Digital Personal Assistant That Grounds And Learns Autonomously, Casey Kennington, Aprajita Shukla

##### Casey R. Kennington

We present a speech-driven digital personal assistant that is robust despite little or no training data and autonomously improves as it interacts with users. The system is able to establish and build common ground between itself and users by signaling understanding and by learning a mapping via interaction between the words that users actually speak and the system actions. We evaluated our system with real users and found an overall positive response. We further show through objective measures that autonomous learning improves performance in a simple itinerary filling task.

Coms: Customer Oriented Migration Service, 2018 Boise State University

#### Coms: Customer Oriented Migration Service, Kai Huang, Xing Gao, Fengwei Zhang, Jidong Xiao

##### Jidong Xiao

Virtual machine live migration has been studied for more than a decade, and this technique has been implemented in various commercial hypervisors. However, currently in the cloud environment, virtual machine migration is initiated by system administrators. Cloud customers have no say on this: They can not initiate a migration, and they do not even know whether or not their virtual machines have been migrated. In this paper, we propose the COMS framework, which is short for "Customer Oriented Migration Service". COMS gives more control to cloud customers so that migration becomes a service option and customers are more aware of ...

Muang Rae Geothermal System: Drilling And Borehole Geophysics, 1000-M Core Hole Into Granitic Rock, Amphoe Pai, Mae Hong Son Province, Northern Thailand, 2018 Boise State University

#### Muang Rae Geothermal System: Drilling And Borehole Geophysics, 1000-M Core Hole Into Granitic Rock, Amphoe Pai, Mae Hong Son Province, Northern Thailand, Spencer H. Wood, Kriangsak Pirarai, Aranya Fuangswasdi, Wiboon Kaentao, Albert Waibel, Fongsaward S. Singharajwarapan

##### Spencer H. Wood

In 2015, a 1-km core hole was drilled into granitic rock at the Muang Rae geothermal area. Previous drilling in 1993 to 200 m was unsuccessful in obtaining flows, but one of the “dry” wells began flowing in August, 2013 at 9.75 L/s of 96.9°C water from a fracture zone 80 m deep. In the sandy bed of the Pai River, 150 m south of that well is a 600-m long line of hot seeps, oriented NE, with highest temperature measured at 94.5°C. Geology is foliated Triassic (?) granitic rock cut by a NE-SW-trending normal ...

Gphcessay.Docx, 2018 Harding University

#### Gphcessay.Docx, Daryl Bagley

##### Daryl Bagley

No abstract provided.

Physical Models Of The Toroidal Dipole, 2018 California Institute of Technology

#### Physical Models Of The Toroidal Dipole, Armian Hanelli, Amanuel Eshete, Jorge Del Carpio, Walerian Majewski

##### Exigence

We have investigated two models of the third elementary electromagnetic dipole, known as the toroidal dipole. Its magnetic realization is a circumferentially magnetized ring constructed of neodymium. The electric model of the dipole is a toroidal coil connected to a DC voltage. The electric and magnetic toroids produce only an inner magnetic field, inside the torus, and interact only on contact with the electric current density or when immersed in a time-dependent electric field. We studied the characteristics of a permanent-magnet toroid, and observed the influence of electric and magnetic fields on it. A static toroidal dipole moment of this ...

The Threat Of Artificial Superintelligence, 2018 Lord Fairfax Community College

#### The Threat Of Artificial Superintelligence, Joseph D. Ebhardt

##### Exigence

This paper discusses the development of AI and the threat posed by the theoretical achievement of artificial superintelligence. AI is becoming an increasingly significant fixture in our lives and this will only continue in the future. The development of artificial general intelligence (AGI) would quickly lead to artificial superintelligence (ASI). AI researcher Steve Omohundro’s universal drives of rational systems demonstrate why ASI could behave in ways unanticipated by its designers. A technological singularity may occur if AI is allowed to undergo uncontrolled rapid self-improvement, which could pose an extinction-level risk to the human race. Two possible safety measures, AI ...

Remote Sensing Of Seasonal Changes And Disturbances In Mangrove Forest: A Case Study From South Florida, 2018 International Hurricane Research Center and Department of Earth and Environment, Florida International University

#### Remote Sensing Of Seasonal Changes And Disturbances In Mangrove Forest: A Case Study From South Florida, Keqi Zhang, Bina Thapa, Michael S. Ross, Daniel Gann

##### Daniel Gann

Knowledge of the spatial and temporal changes caused by episodic disturbances and seasonal variability is essential for understanding the dynamics of mangrove forests at the landscape scale, and for building a baseline that allows detection of the effects of future environmental change. In combination with LiDAR data, we calculated four vegetation indices from 150 Landsat TM images from 1985 to 2011 in order to detect seasonal changes and distinguish them from disturbances due to hurricanes and chilling events in a mangrove-dominated coastal landscape. We found that normalized difference moisture index (NDMI) performed best in identifying both seasonal and event-driven episodic ...

Algebraic Methods For The Construction Of Algebraic-Difference Equations With Desired Behavior, 2018 Aristotle University of Thessaloniki

#### Algebraic Methods For The Construction Of Algebraic-Difference Equations With Desired Behavior, Lazaros Moysis, Nicholas Karampetakis

##### Electronic Journal of Linear Algebra

For a given system of algebraic and difference equations, written as an Auto-Regressive (AR) representation $A(\sigma)\beta(k)=0$, where $\sigma$ denotes the shift forward operator and $A\left( \sigma \right)$ a regular polynomial matrix, the forward-backward behavior of this system can be constructed by using the finite and infinite elementary divisor structure of $A\left( \sigma \right)$. This work studies the inverse problem: Given a specific forward-backward behavior, find a family of regular or non-regular polynomial matrices $A\left( \sigma \right)$, such that the constructed system $A\left( \sigma \right) \beta \left( k\right) =0$ has exactly the ...

Website Review: Treehugger.Com, 2018 University of North Alabama

#### Website Review: Treehugger.Com, Brandi H. Johnson

##### Journal of Sustainability Studies

No abstract provided.