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Full-Text Articles in Computer Sciences

Assessing Relevance Of Tweets For Risk Communication, Xiaohui Liu, Bandana Kar, Chaoyang Zhang, David M. Cochran Jun 2018

Assessing Relevance Of Tweets For Risk Communication, Xiaohui Liu, Bandana Kar, Chaoyang Zhang, David M. Cochran

Faculty Publications

Although Twitter is used for emergency management activities, the relevance of tweets during a hazard event is still open to debate. In this study, six different computational (i.e. Natural Language Processing) and spatiotemporal analytical approaches were implemented to assess the relevance of risk information extracted from tweets obtained during the 2013 Colorado flood event. Primarily, tweets containing information about the flooding events and its impacts were analysed. Examination of the relationships between tweet volume and its content with precipitation amount, damage extent, and official reports revealed that relevant tweets provided information about the event and its impacts rather than any …


Temporal And Spatiotemporal Investigation Of Tourist Attraction Visit Sentiment On Twitter, Jose J. Padilla, Hamdi Kavak, Christopher J. Lynch, Ross J. Gore, Saikou Y. Diallo Jun 2018

Temporal And Spatiotemporal Investigation Of Tourist Attraction Visit Sentiment On Twitter, Jose J. Padilla, Hamdi Kavak, Christopher J. Lynch, Ross J. Gore, Saikou Y. Diallo

VMASC Publications

In this paper, we propose a sentiment-based approach to investigate the temporal and spatiotemporal effects on tourists' emotions when visiting a city's tourist destinations. Our approach consists of four steps: data collection and preprocessing from social media; visitor origin identification; visit sentiment identification; and temporal and spatiotemporal analysis. The temporal and spatiotemporal dimensions include day of the year, season of the year, day of the week, location sentiment progression, enjoyment measure, and multi-location sentiment progression. We apply this approach to the city of Chicago using over eight million tweets. Results show that seasonal weather, as well as special days and …


Optimization Of A Cyclic Express Subway Service, Hai Wang, Jiangang Jin, Jingfeng Yang Jun 2018

Optimization Of A Cyclic Express Subway Service, Hai Wang, Jiangang Jin, Jingfeng Yang

Research Collection School Of Computing and Information Systems

With rapid population growth and increasing demand for urban mobility, metropolitan areas such as Singapore, Tokyo, and Shanghai are increasingly dependent on public transport systems. Various strategies are proposed to improve the service quality and capacity of bus and subway systems. Express trains-i.e., trains that skip certain stations-are commonly used, because they can travel at higher speeds, potentially reduce travel time, and serve more passengers. In this paper, we study cyclic express subway service (CESS), in which express trains provide routine transport service with cyclic (periodic) station-skip patterns that can be used in daily service. We propose an exact Mixed …


Automatically Conceptualizing Social Media Analytics Data Via Personas, Jung S.G., Salminen J., An J., Kwak H., Jansen B.J. Jun 2018

Automatically Conceptualizing Social Media Analytics Data Via Personas, Jung S.G., Salminen J., An J., Kwak H., Jansen B.J.

Research Collection School Of Computing and Information Systems

Social media analytics is insightful but can also be difficult to use within organizations. To address this, we present Automatic Persona Generation (APG), a system and methodology for quantitatively generating personas using large amounts of online social media data. The APG system is operational, deployed in a pilot version with several organizations in multiple industry verticals. APG uses a robust web and stable back-end database framework to process tens of millions of user interactions with thousands of online digital products on multiple social media platforms, including Facebook and YouTube. APG identifies both distinct and impactful audience segments for an organization …


Column Generation Approach For Feeder Vessel Routing And Synchronization At A Congested Transshipment Port, Jian G. Jin, Qiang Meng, Hai Wang Jun 2018

Column Generation Approach For Feeder Vessel Routing And Synchronization At A Congested Transshipment Port, Jian G. Jin, Qiang Meng, Hai Wang

Research Collection School Of Computing and Information Systems

With increasing container-shipping traffic in major transshipment ports, unsynchronized shipping services at hub ports usually lead to loss of transshipment connections, significant vessel port-stay time, and congestion. This calls for the design of feeder vessel services to pick up from and deliver containers to neighboring local ports, and, at the same time, synchronize them with long-haul services in a manner that enables efficient container transshipment. In this paper, we present a mixed integer linear programming model to optimize the feeder vessel routes and hub port synchronization with an objective to minimize the total operating and connection cost. We exploit the …


Contents, Adfsl May 2018

Contents, Adfsl

Annual ADFSL Conference on Digital Forensics, Security and Law

No abstract provided.


Front Matter, Adfsl May 2018

Front Matter, Adfsl

Annual ADFSL Conference on Digital Forensics, Security and Law

No abstract provided.


Analysis Of Data Erasure Capability On Sshd Drives For Data Recovery, Andrew Blyth May 2018

Analysis Of Data Erasure Capability On Sshd Drives For Data Recovery, Andrew Blyth

Annual ADFSL Conference on Digital Forensics, Security and Law

Data Protection and Computer Forensics/Anti-Forensics has now become a critical area of concern for organizations. A key element to this is how data is sanitized at end of life. In this paper we explore Hybrid Solid State Hybrid Drives (SSHD) and the impact that various Computer Forensics and Data Recovery techniques have when performing data erasure upon a SSHD.


Knowledge Expiration In Security Awareness Training, Tianjian Zhang May 2018

Knowledge Expiration In Security Awareness Training, Tianjian Zhang

Annual ADFSL Conference on Digital Forensics, Security and Law

No abstract provided.


Positive Identification Of Lsb Image Steganography Using Cover Image Comparisons, Michael Pelosi, Nimesh Poudel, Pratap Lamichhane, Devon Lam, Gary Kessler, Joshua Macmonagle May 2018

Positive Identification Of Lsb Image Steganography Using Cover Image Comparisons, Michael Pelosi, Nimesh Poudel, Pratap Lamichhane, Devon Lam, Gary Kessler, Joshua Macmonagle

Annual ADFSL Conference on Digital Forensics, Security and Law

In this paper we introduce a new software concept specifically designed to allow the digital forensics professional to clearly identify and attribute instances of LSB image steganography by using the original cover image in side-by-side comparison with a suspected steganographic payload image. The “CounterSteg” software allows detailed analysis and comparison of both the original cover image and any modified image, using sophisticated bit- and color-channel visual depiction graphics. In certain cases, the steganographic software used for message transmission can be identified by the forensic analysis of LSB and other changes in the payload image. The paper demonstrates usage and typical …


Exploring The Use Of Graph Databases To Catalog Artifacts For Client Forensics, Rose Shumba May 2018

Exploring The Use Of Graph Databases To Catalog Artifacts For Client Forensics, Rose Shumba

Annual ADFSL Conference on Digital Forensics, Security and Law

Cloud computing has revolutionized the methods by which digital data is stored, processed, and transmitted. It is providing users with data storage and processing services, enabling access to resources through multiple devices. Although organizations continue to embrace the advantages of flexibility and scalability offered by cloud computing, insider threats are becoming a serious concern as cited by security researchers. Insiders can use authorized access to steal sensitive information, calling for the need for an investigation. This concept paper describes research in progress towards developing a Neo4j graph database tool to enhance client forensics. The tool, with a Python interface, allows …


Precognition: Automated Digital Forensic Readiness System For Mobile Computing Devices In Enterprises, Jayaprakash Govindaraj, Robin Verma, Gaurav Gupta May 2018

Precognition: Automated Digital Forensic Readiness System For Mobile Computing Devices In Enterprises, Jayaprakash Govindaraj, Robin Verma, Gaurav Gupta

Annual ADFSL Conference on Digital Forensics, Security and Law

Enterprises are facing an unprecedented risk of security incidents due to the influx of emerging technologies, like smartphones and wearables. Most of the current Mobile security systems are not maturing in pace with technological advances. They lack the ability to learn and adapt from the past knowledge base. In the case of a security incident, enterprises find themselves underprepared for the lack of evidence and data. The systems are not designed to be forensic ready. There is a need for automated security analysis and forensically ready solution, which can learn and continuously adapt to new challenges, improve efficiency and productivity …


Non-Use Of A Mobile Phone During Conducting Crime Can Also Be Evidential, Vinod Polpaya Bhattathiripad Ph D May 2018

Non-Use Of A Mobile Phone During Conducting Crime Can Also Be Evidential, Vinod Polpaya Bhattathiripad Ph D

Annual ADFSL Conference on Digital Forensics, Security and Law

Cyber-clever criminals who are aware of the consequence of using mobile phones during conducting crimes often stay away from their phones while involved in crimes. Some of them even change their handset and SIM card, subsequently. This article looks into how, intentional disassociation (and even unintentional non-use) of mobile phone in (non-cyber) crimes, can become evidential clues of the perpetrators’ involvement in criminal acts. With the help of a recent judicial episode, this article reveals how extremely careful and masterful handling of extensive and voluminous Call Details Records and tower dumps by a cyber-savvy investigating official can unearth evidential clues …


Forensic Analysis Of The Exfat Artifacts, Yves Vandermeer, An Lekhac, Tahar Kechadi, Joe Carthy May 2018

Forensic Analysis Of The Exfat Artifacts, Yves Vandermeer, An Lekhac, Tahar Kechadi, Joe Carthy

Annual ADFSL Conference on Digital Forensics, Security and Law

Although keeping some basic concepts inherited from FAT32, the exFAT file system introduces many differences, such as the new mapping scheme of directory entries. The combination of exFAT mapping scheme with the allocation of bitmap files and the use of FAT leads to new forensic possibilities. The recovery of deleted files, including fragmented ones and carving becomes more accurate compared with former forensic processes. Nowadays, the accurate and sound forensic analysis is more than ever needed, as there is a high risk of erroneous interpretation. Indeed, most of the related work in the literature on exFAT structure and forensics, is …


Measuring Symmetry In Real-World Scenes Using Derivatives Of The Medial Axis Radius Function, Morteza Rezanejad, John D. Wilder, Kaleem Siddiqi, Sven Dickinson, Allan Jepson, Dirk B. Walther May 2018

Measuring Symmetry In Real-World Scenes Using Derivatives Of The Medial Axis Radius Function, Morteza Rezanejad, John D. Wilder, Kaleem Siddiqi, Sven Dickinson, Allan Jepson, Dirk B. Walther

MODVIS Workshop

Symmetry has been shown to be an important principle that guides the grouping of scene information. Previously, we have described a method for measuring the local, ribbon symmetry content of line-drawings of real-world scenes (Rezanejad, et al., MODVIS 2017), and we demonstrated that this information has important behavioral consequences (Wilder, et al., MODIVS 2017). Here, we describe a continuous, local version of the symmetry measure, that allows for both ribbon and taper symmetry to be captured. Our original method looked at the difference in the radius between successive maximal discs along a symmetric axis. The number of radii differences in …


Live Gpu Forensics: The Process Of Recovering Video Frames From Nvidia Gpu, Yazeed M. Albabtain, Baijian Yang May 2018

Live Gpu Forensics: The Process Of Recovering Video Frames From Nvidia Gpu, Yazeed M. Albabtain, Baijian Yang

Annual ADFSL Conference on Digital Forensics, Security and Law

The purpose of this research is to apply a graphics processing unit (GPU) forensics method to recover video artifacts from NVIDIA GPU. The tested video specs are 512 x 512 in resolution for video 1 and 800 x 600 in resolution for video 2. Both videos are mpeg4 video codec. A VLC player was used in the experiment. A special program has been developed using OpenCL to recover 1) patterns that are frames consist of pixel values and 2) dump data from the GPU global memory. The dump data that represent the video frame were located using simple steps. The …


Unmanned Aerial Vehicle Forensic Investigation Process: Dji Phantom 3 Drone As A Case Study, Alan Roder, Kim-Kwang Raymond Choo, Nhien-A Le-Khac May 2018

Unmanned Aerial Vehicle Forensic Investigation Process: Dji Phantom 3 Drone As A Case Study, Alan Roder, Kim-Kwang Raymond Choo, Nhien-A Le-Khac

Annual ADFSL Conference on Digital Forensics, Security and Law

Drones (also known as Unmanned Aerial Vehicles – UAVs) are a potential source of evidence in a digital investigation, partly due to their increasing popularity in our society. However, existing UAV/drone forensics generally rely on conventional digital forensic investigation guidelines such as those of ACPO and NIST, which may not be entirely fit-for-purpose. In this paper, we identify the challenges associated with UAV/drone forensics. We then explore and evaluate existing forensic guidelines, in terms of their effectiveness for UAV/drone forensic investigations. Next, we present our set of guidelines for UAV/drone investigations. Finally, we demonstrate how the proposed guidelines can be …


Detection And Recovery Of Anti-Forensic (Vault) Applications On Android Devices, Michaila Duncan, Umit Karabiyik May 2018

Detection And Recovery Of Anti-Forensic (Vault) Applications On Android Devices, Michaila Duncan, Umit Karabiyik

Annual ADFSL Conference on Digital Forensics, Security and Law

Significant number of mobile device users currently employ anti-forensics applications, also known as vault or locker applications, on their mobile devices in order to hide files such as photos. Because of this, investigators are required to spend a large portion of their time manually looking at the applications installed on the device. Currently, there is no automated method of detecting these anti-forensics applications on an Android device. This work presents the creation and testing of a vault application detection system to be used on Android devices. The main goal of this work is twofold: (i) Detecting and reporting the presence …


Designing Smart Applications Using Ar (Augmented Reality), Kimberly A. De La Santa May 2018

Designing Smart Applications Using Ar (Augmented Reality), Kimberly A. De La Santa

Publications and Research

Augmented Reality is rapidly developing in popularity because it brings elements of the virtual world, into our real world. Augmented Reality (AR) is a variation of Virtual Reality (VR). VR technologies immerses a user inside an imaginary environment. While immersed, the user cannot see the real world around them. In contrast, AR allows the user to see the real world, with virtual objects and information intertwined. Therefore, AR supplements reality and enhances the things we see, hear, and feel. This research project will implement a Web page that gives the user the opportunity to experiment with AR.


Ai-Human Collaboration Via Eeg, Adam Noack May 2018

Ai-Human Collaboration Via Eeg, Adam Noack

All College Thesis Program, 2016-2019

As AI becomes ever more competent and integrated into our lives, the issue of AI-human goal misalignment looms larger. This is partially because there is often a rift between what humans explicitly command and what they actually mean. Most contemporary AI systems cannot bridge this gap. In this study we attempted to reconcile the goals of human and machine by using EEG signals from a human to help a simulated agent complete a task.


An Agent-Based Approach To Simulating The Minimum Wage Market, Luke Snyder May 2018

An Agent-Based Approach To Simulating The Minimum Wage Market, Luke Snyder

Computer Science and Computer Engineering Undergraduate Honors Theses

This paper seeks to identify and describe the economic impacts of adjusting the minimum wage on employment. The approach taken is constructing an agent-based simulation using the well-known software suite NetLogo. The simulation models business and consumer behavior through a set of governing economic principles, yet also provides randomization to more accurately account for occasional outliers and human irrationality. The results of the simulation indicate relatively small changes in employment among minimum wages between $7.25 and $10.00, with a gradual decrease thereafter.


Epoca House: The Implementation Strategy, Courtney Thomas, Yaffa Fain, Shuxiao Teng, Mingjun Xie May 2018

Epoca House: The Implementation Strategy, Courtney Thomas, Yaffa Fain, Shuxiao Teng, Mingjun Xie

School of Professional Studies

This capstone report provides a written strategic implementation plan for EPOCA House. EPOCA, Ex-Prisoners and Prisoners Organizing for Community Advancement, is a non-profit dedicated to creating better resources and opportunities for prisoners and ex-prisoners in Worcester. The organization’s most recent initiative, EPOCA House, is a transitional facility that will provide reentry services and temporary housing to ex-offenders in and around the Worcester area. Recently, Massachusetts passed a comprehensive criminal justice reform bill that will dramatically reduce the number of people being incarcerated; however, little attention is focused on what will happen to individuals after they leave prison. At the same …


A Guide For Hiring Mature Employees At Ascentria, Binghe Change, Calleigh Leach, Elsie Lu, Hongquiang You, Mengge Wang, Nina Mariotti May 2018

A Guide For Hiring Mature Employees At Ascentria, Binghe Change, Calleigh Leach, Elsie Lu, Hongquiang You, Mengge Wang, Nina Mariotti

School of Professional Studies

This paper will explore existing literature on aspects of an intergenerational workplace in a nonprofit organization and provide recommendations for recruiting and retaining older employees for a human service organization, Ascentria Care Alliance, in Worcester, MA. The paper will review research on trends in the nonprofit industry, a comprehensive breakdown of generational workplace values, reasons people are returning to work and effective marketing strategies that appeal to older generations. Marketing strategies specifically will explore best practices for website design, social media usage, and job descriptions. Additionally, this paper will research case studies of nonprofits with successful intergenerational workforce initiatives, as …


Clear The Air: Moving Towards A More Supportive, Welcoming, Tobacco-Free Clark University, Edward Aroko, Simon Elliot, Jackson Espe, Donovan Smith, Michael Spanos May 2018

Clear The Air: Moving Towards A More Supportive, Welcoming, Tobacco-Free Clark University, Edward Aroko, Simon Elliot, Jackson Espe, Donovan Smith, Michael Spanos

School of Professional Studies

The deleterious health effects of the consumption of tobacco products, especially for youth, have been documented thoroughly and are nearly universally recognized. Numerous federal, state, and local regulations, coupled with health education and tobacco cessation initiatives have been launched to address these effects. Although these pushes have done much to reduce the rates of preventable health conditions and death due to the usage of tobacco, there remains much work to be done at the local level to discourage and disrupt patterns of substance use and abuse. The mission of Clark Clear the Air is to propose various and creative ways …


Inbound Marketing, Hasini Assiriyage, Isabelle Zoeckler, Emmanuel Aghado, Kefu Bu, Xiouyu Jiang, Rajesh Kamble, Yan Wang May 2018

Inbound Marketing, Hasini Assiriyage, Isabelle Zoeckler, Emmanuel Aghado, Kefu Bu, Xiouyu Jiang, Rajesh Kamble, Yan Wang

School of Professional Studies

This study looks into inbound marketing practice through the process of secondary research. This insight on best practices and market examples have been employed in order to identify the benefits of Inbound Marketing for the School of Professional Studies at Clark University. Through the research, this team has consolidated a number of recommendations for the SPS marketing strategies moving forward. A focus has been placed on identifying solutions, which were effective and financially feasible. The primary solutions are internally sourced; with a future long term recommendation of seeking advice from a third party firm to automate the process.


Adult Learners: A Targeted Marketing Approach, Sarah Baldelli, Camilo Botero, Camille Ferreol, Caleb Horton, Xinyue Ma, Stefan Sprinkmoller May 2018

Adult Learners: A Targeted Marketing Approach, Sarah Baldelli, Camilo Botero, Camille Ferreol, Caleb Horton, Xinyue Ma, Stefan Sprinkmoller

School of Professional Studies

The development of the Adult Learner Capstone Project started with a focus and need to learn more about affinity groups in the Worcester area in order to reach the potential adult learner demographic. Although some partnerships already existed, the Director of Marketing and Communications for Graduate Admissions, Tara Probeck, yearned to explore the potential partnerships and alternative uses of professional organizations to market to the current working professionals. From this idea, our capstone project was introduced in hopes of establishing a comprehensive and exhaustive list of potential organizational partnerships, specific for the School of Professional Studies.


My Choice Greens, Alina Zulfikarova, Amelia Mohr, Hesi Zhang, Ruiqi Huang, Sean Tatar, Yuhao Zhou, Zijun Zhou May 2018

My Choice Greens, Alina Zulfikarova, Amelia Mohr, Hesi Zhang, Ruiqi Huang, Sean Tatar, Yuhao Zhou, Zijun Zhou

School of Professional Studies

My Choice Programs for Independent Living is a nonprofit in Worcester, Massachusetts that helps individuals with special needs. In 2016, My Choice Programs added a branch to their organization called My Choice Greens. My Choice Greens is committed to growing fresh produce in their hydroponic farm. The profit generated from selling their vegetables is put back into direct programming for My Choice Programs. My Choice Greens is the first hydroponic farm in Worcester, but unfortunately not many people are aware of their program. Also, since they are a small nonprofit, they do not have sufficient funding or resources to market …


Optical Heritage Museum: An Interactive Touch, Connor Guerin, Ankur Halwai, Jinzhao Liu, Qi Liu, Yangjing Wang, Yashaswini Bharti May 2018

Optical Heritage Museum: An Interactive Touch, Connor Guerin, Ankur Halwai, Jinzhao Liu, Qi Liu, Yangjing Wang, Yashaswini Bharti

School of Professional Studies

Optical Heritage Museum (OHM) was established in 1983 with the aim to preserve, promote and display historical artifacts of the optics industry and educate all of its vital role optics has played in societal development. Over the years, the museum has grown in its physical space along with exhibit development to engage audiences in innovative, effective methods. Clark University’s School of Professional Studies department and curator of Optical Heritage Museum, Mr. Whitney’s Whitney, have establish a collaboration that has spanned over two semesters with the goal to support and aid in improving OHM. Our capstone group was assigned the task …


Leicester Research A Study In Effective Technology In Education, Jimeshkumar Chauhan, Anna Lakomy, Li Liu, Christina Mccarthy, Scott Mccarthy, Roman Pena, Emilie Smiley May 2018

Leicester Research A Study In Effective Technology In Education, Jimeshkumar Chauhan, Anna Lakomy, Li Liu, Christina Mccarthy, Scott Mccarthy, Roman Pena, Emilie Smiley

School of Professional Studies

The LPS Research Team has been tasked with researching and recommending a technology plan for a new school that Leicester Public Schools is planning to build. In this paper, we present an overview of the our goals and our client’s goals, an introduction to industry trends, and discuss our findings based on research conducted via interviews with schools that have undergone similar projects. We also outline the conclusions drawn from this research and our analysis of the data we uncovered, and make specific recommendations for technology to be utilized in Leicester’s new school. Finally, we present a 3-part framework that …


Leicester Public Schools Information And Data Portal: Research And Recommendations, Yue Cen, Natalie Bonetti, Rashida Buchanan, Sathark Jain, Yuwei Wong May 2018

Leicester Public Schools Information And Data Portal: Research And Recommendations, Yue Cen, Natalie Bonetti, Rashida Buchanan, Sathark Jain, Yuwei Wong

School of Professional Studies

The purpose of this project is to develop a strategy for the creation of a multifaceted portal to help with the organization and dissemination of information about the Leicester public school district. The functionality of this portal is to provide comparative financial, demographic, and academic data to other relative school districts in the area, both for the parents’ and for the city’s reference. It will be an examination into the best practices for creating a portal, both technological and aesthetic recommendations, as well as research into the value the publication of this data would provide for the parents of current …