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Information Science & Architecture Expert Witnesses

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James B. Wener, BSME, MBA
Founder
3132 North Volz Drive West
Arlington Heights IL 60004
USA
phone: 847-927-5377
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James Wener Business Systems Expert PhotoJames B. Wener, BSME, MBA is a Business Systems Consultant with over 45 years of experience in successfully managing small through very large projects and implementing a large number of computer systems for healthcare, manufacturing, and distribution organizations.

Mr. Wener is a certified HIPAA professional, having performed several HIPAA compliance assessments, staff training programs, writing policies and procedures and developing and implementing HIPAA Breach Programs. Health care clients include Rush/Prudential Health Plans in Chicago, HMO Illinois, Mayo Clinic in Minnesota, Harris Health Plans in Dallas, HealthFirst in New York and Mercy Health Plans in Wisconsin and Illinois, Mercy Hospital in Chicago and other health maintenance organizations (HMOs).

A Management Systems consultant since 1991, Mr. Wener has a significant record of accomplishment. His Information Technology (IT) projects include the implementation and management of a wide variety of application software systems. He has decades of experience in process automation for payers (health plans, third party administrators or TPAs), providers (hospital and physician groups), Management Service Organizations (MSOs), and clients in other industries. Mr. Wener specializes in:
  • Analyzing Operational Flow
  • Identifying Information Requirements
  • Preparing Vendor Requests for Proposal
  • Selecting, Developing, and Implementing Computerized Solutions
Litigation Support - James B. Wener has been an expert witness for several plaintiffs and defendants regarding failed projects, failed system implementations, and HIPAA breaches. His extensive litigation support and expert witness engagements have focused on assisting attorneys in understanding the industrial and best practices related to the facts of their case, preparing the "message" that best represents the client's position, assisting in preparing pleadings, assisting in settlement negotiations, writing expert witness reports understandable to the non-professional, preparing for opposing side depositions, being deposed, and preparing for and appearing at trial.

Areas of Expertise:
  • HIPAA Assessments
  • Failed System Implementation Projects
  • Intellectual Property Damages
  • Wrongful Employee Termination
  • Project Management
  • System Implementation
  • Systems Implementation Management
  • Disaster Recovery Planning
  • Breach of Patient Privacy
  • Software Company Bankruptcy
  • Failed Project Management
  • IT Advisor Independence
  • View James B. Wener's Consulting Profile.
    7/5/2018 · Computers
    Companies invest considerable time, effort and money when selecting and implementing a major mission critical computer system. Successfully completing the process can be complicated and frustrating; as a result, it doesn't take a lot for implementations to fail. The problem is that the business organization that undertook the implementation in the first place is stuck - stuck with the time, money and the inconvenience of not having the system they purchased. The company has not only left without the new system, they are back to using the systems that they originally thought so inadequate that they committed to spending the time and money for a new system.

    6/5/2018 · Computers
    Implementing a mission critical computer system has a significant impact upon a business organization. Successfully completing the process can be complicated and frustrating; as a result, it doesn't take a lot for the implementation to fail. Once an implementation fails, there is always enough blame to go around. The problem is that the business organization that undertook the implementation in the first place is stuck – stuck with the time, money and the inconvenience of not having the system they purchased. The company has not only left without the new system, they are back to using the systems that they originally thought sufficiently inadequate that they committed to spending the time and money for a new system. Successful litigation will help – but will not make them whole. But worse, a failed litigation only compounds the problem. Preparing the strategy for litigating a failed implementation takes time and thought. This article will take the reader through the development and implement of a litigation strategy that worked and discuss why it worked.

    3/29/2018 · Expert Witnessing
    The role of the litigation attorney is to tell a story to the arbiter in such a way to effectively represents the client's position. Often the attorney requires a person with unique expertise to understand and present technical information in a manner that is understandable to the lay person. Attorneys often determine the need for an expert witness after discovery and after depositions have been taken for many of the witnesses. In many cases this is too late for an expert to most effective. My experience as an expert witness has led me to recommend considering the use of an expert at the following times

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    Ray Yepes
    Director of Forensics and Incident Response
    1205 Sam Bass Rd.
    Round Rock Texas 78681
    USA
    phone: 512-255-3700
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    Ray Yepes Security Expert PhotoRay Yepes, Director of Forensics and Incident Response at Cyber Defenses, Inc., has over 21 years of experience as a Security Professional and Criminal Investigations Examiner. In addition to many forensic industry certifications, Mr. Yepes is a Diplomate member of the American Board of Forensic Examiners and the American Board for Certification in Homeland Security. He has been a licensed private investigator since 2006.

    As a security professional, Mr. Yepes has consulted, designed, maintained, and/or implemented security perimeters, network security architectures, and security policies for small, midsize, and large companies including Fortune 500, 200, 100, and 50 companies.

    As a criminal investigations examiner, Mr. Yepes has assisted and advised local and federal government agencies in national security matters and high profile criminal investigations. His first digital forensic investigation dates back to 1995 while assisting the FBI in a child pornography case.

    Mr. Yepes has conducted and managed numerous Cyber Security incidents, including but not limited to malware, phishing, password attacks, denial of service attacks (DoS), Man in the Middle attacks (MiTM), drive-by downloads, malvertising, rogue software, social media threats, advanced persistent threats (APT), and other incidents. In response, he has developed and executed information security strategies, advising business areas on security risks.

    Litigation Support - Mr. Yepes has conducted over 1,000 Digital Forensic Investigations ranging from complex white-collar schemes, to murder, and economic espionage. He has testified on Computer Forensics, Cyber Security, and eDiscovery matters in federal, state, and local courts. Mr. Yepes has served as board member, Treasurer, and Vice President for the Forensic Expert Witness Association (Houston Chapter) and is fluent in both Spanish and English.

    Areas of Expertise:
    • Network Forensics
    • Mobile Forensics
    • Vehicle Forensics
    • Computer Forensics
    • Firewall Appliance Forensics
    • Intellectual Property Theft
  • Industrial Espionage
  • Employment Disputes
  • Fraud / Forgery
  • Bankruptcy Investigations
  • Workplace Email / Internet Misuse
  • Regulatory Compliance
  • View Cyber Defenses, Inc.'s Consulting Profile.
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    David H. Williams
    PO Box 220442
    Saint Louis MO 63122
    USA
    phone: 203-423-9015
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    David Williams Telecommunications Expert PhotoDavid H. Williams is an internationally-known expert in the Wireless / Mobile Location field and President and Founder of E911-LBS Consulting. Litigation Support - Mr. Williams provides the highest quality and most impactful expert witness services related to wireless location, across the full range of IP / Patent, criminal, and civil case dimensions from the most technical to those regarding business methods. His services include forensic analysis, reports, and testimony on the validity and accuracy of various types of cell phone/sensor location surveillance devices and associated tracking using GPS, Call Detail Records(CDRs), Cellebrite data extraction, and other location data sources. He is an expert in determining how social media and other mobile application usage can play a key part in various cases.

    Mr. Williams has successfully provided expert witness services in over 100 patent, civil, criminal, anti-trust, and ITC cases, including several successful Inter Parte Reexaminations (IPRs) and numerous civil, criminal, and law enforcement administrative proceedings. His credentials in wireless location prior art go as far back as the early 1980s. He has been deposed 8 times and testified in arbitration proceedings and the Eastern District of Texas, winning both IPR and infringement cases. His work with both prosecution and defendants have resulted in numerous key wins/favorable outcomes. His experience is differentiated based not only the amount of experience but its type, having worked "on-the-inside" of various carriers and location-service application developers. This enables knowing the right questions to ask of such providers, and to "break through the wall" that such providers often put up in litigation.

    The basis of Mr. Williams' expertise is his 30+ years in mobile/wireless communications and information technology solutions design, implementation and ongoing management, Mr. Williams has extensive experience in the activities and issues needed to get mobile location applications to market, including design at the application, system, interface / integration, network, IT, operational and customer facing levels. Mr. Williams has extensive expertise in all aspects of LBS delivery across the mobile location ecosystem including enabling network communications, location technologies / sensors, map data, geospatial platform / GIS, GPS and other location chipsets, location data management, and device, infrastructure, and integration providers. David Williams has developed and implemented industry-leading product and technology strategies and solutions for numerous LBS applications and markets and provides consulting and research services to some of the leading carriers and enterprises in the U.S., Asia, and Europe. His client list includes Apple, AT&T, FedEx, GE, GM, Google, The Houston Police Department, The Los Angeles District Attorney's Office, Samsung, Sprint, Toyota, Verizon Wireless, and numerous medium, small, and startup companies, plus numerous law firms of all sizes. He also provides support to various State Public Defenders Offices on a partial pro-bono basis. 

    Areas of Expertise:

    • Mobile Location-Based Services
    • Wireless 911 (E911); NG911
    • GPS Systems; Network-Based Location Determination Systems
    • Indoor Location Systems, incl. Real Time Location Systems (RTLS); RFID and other RF-based Location systems; WiFi-enabled positioning systems (WPS); Beacon-based systems; Hybrids/Combinations
    • Wireless Network Location Design
    • Location Data Privacy Protection and Data Security Design
    • People, Wearables Tracking / Monitoring
    • Asset Tracking / Location Management
    • Telematics / Driverless Car Ecosystem
    • Navigation Systems; PNDs
    • Map Data, Digital Mapping and GIS
    • Vehicle-to-Vehicle; Fleet Management
    • Mobile Social / Business Networking
    • GPS Forensics; Mobile / IT Integration
    • Location-centric Process Design
    • Mobile Product Design / Implementation
    • M2M, Smart Grid / Energy Systems
    • LBS Big Data and Cloud Computing

    View David Williams' Consulting Profile.

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    Monty G. Myers, PE
    3305 Northland Drive
    Suite 305
    Austin TX 78731
    USA
    phone: 512-459-9292
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    Monty Myers Computer Software Expert PhotoMonty G. Myers, PE, is an active Software Industry Executive with 30+ years of experience, including the founding of Eureka Software Solutions, Inc. (“Eureka”) and acting as CEO of Eureka for 28 years.

    Mr. Myers has provided services to a balanced mix of plaintiffs and defendants in over 40 litigation matters ranging from billion dollar, landscape-changing lawsuits between worldwide industry leaders to smaller-scale litigation between individuals or local businesses. Mr. Myers' clients have included Global 1000 and Fortune 500 companies in industries such as Enterprise, Finance, Military and Defense, Transportation, Oil and Gas, Security, Healthcare, and Automotive.

    Litigation Support - Monty Myers is a Computer and Software Expert Witness, experienced and proven at offering expert testimony under-oath at trial, hearings, and depositions. For the last 5+ years, he has provided expert witness services for engagements including Software Patent or Software Trade Secret litigation matters.

    Mr. Myers is available as a consulting and/or testifying expert witness to assist with understanding the technology and technical issues in the case and providing review, analysis, and testimony (report, deposition, or courtroom) regarding the technology, software, or patents involved in the case. He has worked extensively with counsel in the taking and defending of depositions, reviewing and challenging the testimony of others, and assisting with and implementing an overall trial strategy.

    Areas of Expertise:
    • Source Code Review
    • Source Code Comparison
    • Source Code Reconstruction
    • Source Code Misappropriation / Theft
    • Source Code Copyright / Patents
    • Software Patents
    • Trade Marks
    • Trade Secrets
  • Antitrust
  • NDAs
  • Open Source Licensing
  • Computer Forensics
  • Mobile / Wireless Technology
  • Cloud and Web Business
  • Hardware / Infrastructure
  • Contract Performance / Project Management
  • Capabilities:
    • Adept at taking highly technical material and effectively communicating it to counsel, the judge or a jury in terms they can understand via testimony or reports/declarations
    • Skilled at reviewing and comparing software source code and functionality in the litigation context in relation to protected intellectual property including, trade secrets, copyrights, and patents and/or license or other contractual commitments and requirements
    • Able to reverse engineer and reconstruct hardware and software environments from backups, remnants, and fragments of deprecated software along with re-creating historical hardware and software environments
    • Highly familiar with functional and performance testing of software against applicable specifications, warranties, or industry standards using proprietary and commercial testing tools and techniques
    View Monty Myers' Consulting Profile.

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    C. Matthew Curtin, CISSP
    Founder and CEO
    Columbus Headquarters
    5 E. Long St., 9th Floor
    Columbus OH 43215
    USA
    phone: 614-545-4225
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    C. Matthew Curtin, CISSP  Founder and CEO of Interhack is a Certified Information Systems Security Professional. An Expert in Computers and Information Technology, Mr. Curtin and his team at Interhack help attorneys and executives use data and computer technology in high-stakes situations. 

    Mr. Curtin's work has been at the cutting edge of the intersection of law and technology. The U.S. Court of Appeals for the First Circuit relied on Interhack's forensic computing practice and Mr. Curtin's expert opinion when it established standards for application of Federal wiretap statutes to Web technology, In re Pharmatrak Privacy Litigation (see link above). 

    Academic references to their work include the Stanford Law Review and university courses throughout the world. Mr. Curtin maintains a regular academic appointment as a Senior Lecturer at The Ohio State University's Department of Computer Science and Engineering. He currently chairs the Recruitment subcommittee of the Business Advisory Network that advises the Ohio Department of Education's standards for technology education in secondary and postsecondary schools throughout the state. 

    C. Matthew Curtin's services are available for plaintiffs, defendants, and for the courts directly on technical matters. 

    Areas of Forensic Expertise:

    • Electronic Discovery
    • Preservation and Forensic Analysis of Data
    • Complex Analysis of Non-Standard Data Sets
    • Investigations
    • Data Breaches

    View Mr. Curtin's Consulting Profile.

    Matthew Curtin
    This book is the story of the formation of the world's most widely-used system to protect sensitive information and how a group of independent cryptographers, civil libertarians, and hobbyists managed to demonstrate the system's weakness in June of 1997, even as the U.S. Congress debated the government's control over cryptography. As one of the coordinators of the DESCHALL project that broke a secret message encrypted with what was then the government standard, Curtin presents a unique insider view of how the project came together and what happened behind the scenes to demonstrate the weakness of the standard and ultimately to usher in the age of unrestricted cryptography.
    Matthew Curtin, Peter G. Neumann
    Suitable for the IP manager or developer seeking to improve Web privacy and security, is an indispensable resource for system administrators and application developers, providing a means to understand, create, and maintain secure Internet systems.
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    Philip J. Isaak, PE, P.Eng., DCDC, RCDD, SMIEEE
    Victoria MN USA
    phone: 952-679-4604
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    Philip Isaak Data Center Infrastructure Expert PhotoPhilip J. Isaak, PE, P.Eng., DCDC, RCDD, SMIEEE, is an expert witness, consultant & trainer in the design, construction, procurement, implementation, commissioning & operations of information technology, telecommunications & critical data center facilities. Mr. Isaak provides clear analysis for complex disputes, incorporating industry standards, best-practices and over 20 years of consulting & training expertise working with clients located in 28 countries and territories across 6 continents.

    In recognition of Mr. Isaak’s professional standing, the Institute of Electrical & Electronic Engineers (IEEE), the world’s largest professional association for advancement of technology, certified him to the grade of Senior Member, a level only 9% of IEEE’s over 400,000 global members hold. Mr. Isaak is also an author of several industry standards published by TIA & ANSI/BICSI, whitepapers published by The Green Grid, and the Data Center Handbook published by John Wiley & Sons.


    Expert Witness ServicesAreas of Expertise
    • IP, Trade Secrets, Contracts Analysis
    • Design, Construction, Implementation Claims, Damages, Defects, Delays, Failure & Quality Control Analysis
    • Failed System Analysis
    • Unfulfilled SLA Analysis
    • Technical Investigations
    • Claims Preparation & Analysis
    • Expert Reports
    • Settlement Opinions & Strategies
    • Deposition & Trial Testimony
    • Cloud Computing Services
    • Colocation Services
    • Construction
    • Data Centers
    • Electrical Engineering
    • Fiber Optic Cabling
    • Forensic Engineering
    • IT Systems Capacity Planning & Forecasting
    • Life Safety Systems
    • Network Systems, Services & Infrastructure
    • Operating Procedures
    • Telecommunications


    View Philip Isaak's Consulting Profile.
    1/11/2018 · Computers
    This is the first in a series of six posts on how to overcome contractual challenges for data center projects. The series will address:

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    100 Mill Plain Rd.
    Danbury CT 06811
    USA
    phone: 855-PROLIFOGY (776-5436)
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    Premium Software Consulting Services provided by industry leading experts. Today's software users expect and demand software that is more intelligent, interactive, usable, and reliable than ever before, over a backdrop of continuously evolving technology spanning a range of platforms. To remain competitive, modern applications need to solve complex problems that have never been solved before. This requires more than just programmers. You need experts.

    All of our consultants have a Ph.D. in computer science or related discipline and at least ten years of industry experience. All have contributed to the software state-of-the-art, published original work, presented at conferences around the world, and have years of hands-on, practical industry experience. Areas include Software Design, Reliability, OOP, Pedagogy, Algorithms, Vision, Embedded Systems, Knowledge Acquisition, Programming Theory, Formal Methods, Computational Linguistics, Artificial Intelligence, and others. They know and work with today's modern programming languages and technologies. Expertise spans all aspects of the software life-cycle.

    Offering advanced software development, project management, code review & quality assurance, management consulting, expert witness services, failed project turnaround, usability analysis, and more. Available on or off site anywhere in the United States and Europe. Please see our web site for more information and additional service offerings.
    3/28/2013 · Computers
    The discovery phase of IP litigation often calls for a technical review of a software product. A code review is an activity conducted by an expert witness that involves reviewing the source code of a product to discover pertinent facts relevant to the case.

    3/28/2012 · Technology
    The situation: you have invested an enormous amount of money and company resources in developing software solutions to address client needs. Regardless of the size of your company, every dollar counts and you want to know that your investment today will ultimately produce a fast, modern, scalable, and correct software solution that will still be usable tomorrow with tomorrow's technology.

    Licensing and infringement litigation are two primary potential income sources from a patent. With licensing, the inventor permits the licensee to make, use, sell, or offer to sell a patented invention for compensation.

    10/20/2011 · Technology
    C++, one of the most widely used and known programming languages in software history, could possibly turn into one of the most unknown languages in the coming months.

    12/8/2010 · Technology
    Prolifogy's failed project turnaround service has generated increased interest recently. Specifically, it was the most requested of all service offerings last month—a fact that surprised even company officials.

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    Dr. George Edwards
    Computer Scientist
    7958 Beverly Blvd
    Los Angeles CA 90046
    USA
    phone: 323-545-3933
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    George EdwardsDr. George Edwards, Ph.D. is an expert in Computer Software, Internet Applications, Web Technologies, Mobile Phone/Tablet Applications, Digital Video and Multimedia, Medical and Embedded Software, and Aerospace/Defense Systems. He has more than a decade of experience as a scientist, engineer, and technical consultant to academic research labs, government agencies, technology companies, and attorneys.

    Dr. Ewards has authored dozens of articles and papers related to software engineering for scientific journals and industry magazines. He is listed as a co-inventor on two pending patent applications for novel software technology and has served as a software expert witness in patent litigation matters.

    Dr. Edwards teaches a graduate-level course on software engineering at the University of Southern California.

    Dr. Edwards provides expert consulting in the following areas:
    • Intellectual property and patent infringement
    • Software design/source code audit and review
    • Non-performance claims
    • Expert witness and depositions
    Dr. Edwards is an expert in the following technologies :
    • Programming languages & platforms: Java, C/C++, C#, Perl, Python, PHP, .NET, WinForms, WPF, Visual Studio, Eclipse, Java EE, CORBA
    • Internet and web: JavaScript, AJAX, Node.js, Ruby, HTML, XML, CSS, ASP.NET
    • Mobile devices & applications: Android, iOS, iPhone, Windows Mobile, Windows Phone, BlackBerry, Palm OS, Java ME
    • Multimedia: MPEG, SVG, DVR, Silverlight, Flash
    • Operating systems & servers: UNIX, Linux, Windows, Mac OS
    • Networking: IMAP, POP, SMTP, DNS, TCP/IP, HTTP
    • Databases: RDBMS, SQL, MS SQL Server, MS Access, Oracle, MySQL
    • Project management & development methods: Kanban, Lean software development, agile, object-oriented (OO), aspect-oriented programming (AOP), component-based development, COTS integration, requirements engineering, spiral model, UML
    View Consulting Profile.
    7/10/2012 · Patents
    The importance of software patents has increased dramatically in recent years. The high profile patent disputes between Apple, Google, and other smartphone companies have attracted the most attention in the press, but patent battles are being waged all across the software industry.

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    David Shaw
    9 Wimpole Street
    London W1G 9SG
    GBR
    phone: 44-207-193-8355
    David Shaw is an independent Technical and ICT Expert and Consultant involved in a wide range of high profile System, Integrations, remedial work on Failed Systems and Programs, Litigation, Expert Witness, Mergers and Acquisitions, Financial and Ultra-High Speed Trading Systems, Cyberwarfare and Defence work.

    Services Offered:
  • Governance
  • Strategy
  • Programme Definition
  • Capability
  • Enterprise Architecture
  • Process Engineering
  • Portfolio Management
  • Programme Management Office Implementation
  • Individual Assignments
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    Bhuvan Urgaonkar, PhD
    Available Nationally and Internationally
    W371 Westgate Building
    University Park PA 16802
    USA
    phone: 814-933-7211
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    Bhuvan Urgaonkar, PhD, has over 15 years of experience in the field of Software Engineering and Computers. His work includes research in computer systems software, distributed computing (including systems such as Zookeeper, Redis, Memcached, Cassandra, Kafka), datacenters, cloud computing, storage systems, energy efficiency of computers and datacenters, big data (including systems such as Hadoop, Spark). 

    Dr. Urgaonkar has published over 80 research papers in competitive peer-reviewed conferences and journals on these topics with several best paper awards. He has procured research funding totaling more than $3 Million USD from federal agencies and industrial labs (Google, HP, IBM, Cisco, Microsoft, Amazon) to lead and train several Phd and MS students who now work in industry and academia. Dr. Urgaonkar has also delivered lectures on topics including Cloud Computing and Data Centers to Faculty at Microsoft and numerous other technology companies and universities around the world. 

    Education / Training: Ph.D. in Computer Science from the University of Massachusetts Amherst (2005) B.Tech (honors) in Computer Science and Engineering from the Indian Institute of Technology, Kharagpur, India 

    Awards / Honors: Test of Time Award, ACM Sigmetrics 2016 National Science Foundation Career award, 2010 IBM Faculty Fellowships, 2016, 2014 Several best paper awards (see CV) 

    Litigation Support - Dr. Urgaonkar serves as an expert / technical consultant with multiple firms helping them (i) understand technical content related to state of the art products in areas such as content distribution, distributed computing, datacenter design, among others and (ii) interpret patents in these areas and connections between them and state of the art products and services. Services are available to law firms, government agencies, schools, firms / corporations, and hospitals. They include case review, deposition, and trial testimony as needed. 

    Areas of Expertise:

    • Software Design and Analysis
    • Computer Systems
    • Operating Systems
    • File Systems
    • Databases
    • Computer Security
    • Performance
    • Distributed Computing
    • Data Centers
    • Cloud Computing
    • Big Data Systems
    • Web
    • Internet
    • Content Distribution Networks
    • Software Reliability and Testing
    • Fault Tolerance
    • Hadoop
    • Spark
    • Kubernetes
    • Linux
    • AWS
    • Azure
    • Machine Learning
    • Scheduling
    9/20/2018 · Computers
    Since many Internet applications employ a multi-tier architecture, in this paper, we focus on the problem of analytically modeling the behavior of such applications. We present a model based on a network of queues, where the queues represent different tiers of the application. Our model is sufficiently general to capture (i) the behavior of tiers with significantly different performance characteristics and (ii) application idiosyncrasies such as session-based workloads, concurrency limits, and caching at intermediate tiers. We validate our model using real multi-tier applications running on a Linux server cluster. Our experiments indicate that our model faithfully captures the performance of these applications for a number of workloads and configurations. For a variety of scenarios, including those with caching at one of the application tiers, the average response times predicted by our model were within the 95% confidence intervals of the observed average response times. Our experiments also demonstrate the utility of the model for dynamic capacity provisioning, performance prediction, bottleneck identification, and session policing. In one scenario, where the request arrival rate increased from less than 1500 to nearly 4200 requests/min, a dynamic provisioning technique employing our model was able to maintain response time targets by increasing the capacity of two of the application tiers by factors of 2 and 3.5, respectively.

    8/31/2018 · Computers
    With public cloud providers poised to become indispensable utility providers, neutrality-related mandates will likely emerge to ensure a level playing field among their customers ("tenants"). We analogize with net neutrality to discuss: (i) what form cloud neutrality might take, (ii) what lessons might the net neutrality debate have to offer, and (iii) in what ways cloud neutrality would be different from (and even more difficult than) net neutrality. We use idealized thought experiments and simple workload case studies to illustrate our points and conclude with a discussion of challenges and future directions. Our paper points to a rich and important area for future work.

    8/13/2018 · Computers
    Modern Internet-scale distributed networks have hundreds of thousands of servers deployed in hundreds of locations and networks around the world. Canonical examples of such networks are content delivery networks (called CDNs) that we study in this paper. The operating expenses of large distributed networks are increasingly driven by the cost of supplying power to their servers. Typically, CDNs procure power through long-term contracts from co-location providers and pay on the basis of the power (KWs) provisioned for them, rather than on the basis of the energy (KWHs) actually consumed. We propose the use of batteries to reduce both the required power supply and the incurred power cost of a CDN.

    7/20/2018 · Computers
    Recent technological advances in the development of flashmemory based devices have consolidated their leadership position as the preferred storage media in the embedded systems market and opened new vistas for deployment in enterprise-scale storage systems. Unlike hard disks, flash devices are free from any mechanical moving parts, have no seek or rotational delays and consume lower power. However, the internal idiosyncrasies of flash technology make its performance highly dependent on workload characteristics. The poor performance of random writes has been a cause of major concern which needs to be addressed to better utilize the potential of flash in enterprise-scale environments. We examine one of the important causes of this poor performance: the design of the Flash Translation Layer (FTL) which performs the virtual-to-physical address translations and hides the erase-before-write characteristics of flash. We propose a complete paradigm shift in the design of the core FTL engine from the existing techniques with our Demand-based Flash Translation Layer (DFTL) which selectively caches page-level address mappings. We develop a flash simulation framework called FlashSim. Our experimental evaluation with realistic enterprise-scale workloads endorses the utility of DFTL in enterprise-scale storage systems by demonstrating: (i) improved performance, (ii) reduced garbage collection overhead and (iii) better overload behavior compared to state-of-the-art FTL schemes. For example, a predominantly random-write dominant I/O trace from an OLTP application running at a large financial institution shows a 78% improvement in average response time (due to a 3-fold reduction in operations of the garbage collector), compared to a state-of-the-art FTL scheme. Even for the well-known read-dominant TPC-H benchmark, for which DFTL introduces additional overheads, we improve system response time by 56%.

    6/27/2018 · Computers
    Cloud-based hosting promises cost advantages over conventional in-house (on-premise) application deployment. One important question when considering a move to the cloud is whether it makes sense for 'my' application to migrate to the cloud. This question is challenging to answer due to following reasons. Although many potential benefits of migrating to the cloud can be enumerated, some benefits may not apply to 'my' application. Also, there can be multiple ways in which an application might make use of the facilities offered by cloud providers. Answering these questions requires an in-depth understanding of the cost implications of all the possible choices specific to 'my' circumstances. In this study we identify an initial set of key factors affecting the costs of a deployement choice. Using benchmarks representing two different applications (TPC-W and TPC-E) we investigate the evolution of costs for different deployment choices. We show that application characteristics such as workload intensity, growth rate, storage capacity and software licensing costs produce complex combined effect on overall costs. We also discuss issues regarding workload variance and horizontal partitioning.

    6/7/2018 · Computers
    In this paper, we present techniques for provisioning CPU and network resources in shared hosting platforms running potentially antagonistic third-party applications. The primary contribution of our work is to demonstrate the feasibility and benefits of overbooking resources in shared platforms, to maximize the platform yield: the revenue generated by the available resources. We do this by first deriving an accurate estimate of application resource needs by profiling applications on dedicated nodes, and then using these profiles to guide the placement of application components onto shared nodes. By overbooking cluster resources in a controlled fashion, our platform can provide performance guarantees to applications even when overbooked, and combine these techniques with commonly used QoS resource allocation mechanisms to provide application isolation and performance guarantees at run-time.

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    Jacob Sharony, PhD, MBA
    Principal Scientist
    info@wirelessexpertconsulting.com
    Deer Park NY 11729
    USA
    phone: 888-829-2457
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    Jacob Sharony, PhD, MBA, has over 25 years of experience in Mobile and Wireless Technologies. He is currently an adjunct professor at Columbia University, teaching wireless technologies and applications. He also served as a faculty member of the electrical and computer engineering department and director of the Center of Excellence in Wireless and Information Technology at Stony Brook University. Dr. Sharony held engineering and management positions in diverse technology disciplines at Time Warner Cable, Motorola, BAE Systems, NEC Research Institute, and IBM Research. He has over 50 US patents (pending and issued) and has served on several government expert panels. Litigation Support - Dr. Sharony provides Patent and Class Action litigation support and expert consulting in mobile and wireless technologies. This includes patent infringement and invalidity analysis, FRAND analysis, writing expert reports, and deposition, and testimony in court. His deep knowledge of target markets, including telecom, healthcare, logistics, transportation, government, hospitality, mobile commerce and supply chain management, combined with extensive expertise in wireless and mobile technologies ensure innovative and successful solutions. Areas of Expertise:

    • WiFi
    • 4G LTE and WiMAX
    • 5G Access / Backhaul
    • Millimeter Waves (mmWave) 60 GHz
    • Bluetooth / BLE
    • ZigBee
    • MIMO
    • VoIP
    • RTLS
    • RFID
    • IoT
    • M2M
    • Wireless Sensing Technologies
    • Antenna Issues
    • Small Cell Issues
    • Security Issues

    View Dr. Sharony's Consulting Profile.