The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Traditional systems engineering methods and theories are not sufficient for analyzing and explaining the dynamics of the resource allocation for Systems of Systems (SoS) with autonomous parts. This paper introduces a framework, using complex network models, for studying the interaction of autonomous components and the design of the system connectivity structure in SoS as well as their impact on resource...
Bandwidth requirements for networks that monitor the environment often result in scale limitations. Such limitations can be avoided by applying in-network data classification to reduce required bandwidth, however, traditional strategies that require a priori network configuration become expensive as networks begin to scale. We describe a self-organizing strategy that allows a scale-free set of independent...
Tomorrows systems will be based on close interactions of mechanics, electrics/electronics, control engineering, software technology or new materials, as well as possessing inherent intelligence that will make them superior to mechatronics. Their main features are adaptability, robustness, and proactivity. Intelligent systems are multidisciplinary and therefore, they need to be developed in a discipline-spanning...
In this paper, we implement an application-aware scheduler that differentiates users running real-time applications and delay-tolerant applications while allocating resources. This approach ensures that the priority is given to real-time applications over delay-tolerant applications. In our system model, we include realistic channel effects of Long Term Evolution (LTE) system. Our application-aware...
This article is rooted in the automotive industry as starting point, and discusses the topic of leveraging tacit knowledge through prototypes. The aim of this study is to make the case of using reflective and affirmative prototypes for knowledge creating and transferal in the product development process. After providing an overview on learning and knowledge, the Socialization, Externalization, Combination...
The resilience of systems is a topic of increasing interest for systems engineers. Across systems, stakeholder perspectives, and application domains, there is opportunity for resilience analytics that is broadly applicable. This paper introduces an important facet of resilience analytics that is concerned with disruption of priorities and changeable stakeholder requirements. In particular, resilience...
Establishing deep understanding of customers and their perception of value is a prerequisite to deliver commercially successful products in today's hostile business environment. This paper elaborates on to which degree companies focus on customer value, along with their collaborative practices with customers undertaken in product development. Emphasis has been placed on comparing such practices in...
Unmanned aerial vehicles (UAV) are commonly used to conduct tasks (e.g. monitor and surveillance) in various civilian applications from a remote location. Wireless communications (i.e. radio frequency) are often used to remotely pilot the UAV and stream data back to the operator. The characteristics of the wireless communication channel allows attackers to monitor and manipulate the operation of the...
As unmanned autonomous vehicles (UAVs) are being widely utilized in military and civil applications, concerns about mission safety and how to integrate different phases of mission design are growing significantly. One important barrier to a cost-effective and timely safety certification process for UAVs is the lack of a systematic approach for bridging the gap between understanding high-level commander/pilot...
Information is the fuel of modern society; from social media to the stock exchange, the ability for individual entities to connect with each other over distance makes everything possible. Similarly, the ability to leverage information across a complex battlespace is one of the key elements that makes the U.S. Army such a potent fighting force. At the heart of this capability is a robust and adaptive...
The following case study describes how a series of operational concept demonstrations provided significant benefits for the OCX program and how the lessons learned from that experience can be applied to other large, complex programs with multiple stakeholders.
Brain-machine interface (BMI) systems collect and classify electroencephalogram (EEG) data to predict the desired command of the user. The P300 EEG signal is passively produced when a user observes or hears a desired stimulus. The P300 can be used with a visual display to allow a BMI user to select commands from an array of selections. The visual stimuli are often repeated and averaged to increase...
This paper presents a novel sleep/wake classification method based on heart rate and pulse oximetry, using logistic model with derived dynamic time warping and correlation features introduced, which were used to classify sleep stages. 100 sleep recordings obtained from the Sleep Heart Health Study dataset, which are available on websites, were used to validate the proposed method. Using the features...
Predicting mortality of Middle East respiratory syndrome (MERS) patients with identified outcomes is a core goal for hospitals in deciding whether a new patient should be hospitalized or not in the presence of limited resources of the hospitals. We present an oversampling approach that we call Greedy-Based Oversampling Approach (GBOA). We evaluate our approach and compare it against the standard oversampling...
In this paper, the results of a research and development project sponsored by Nucor Steel Corporation, Marion, Ohio, is presented. This project is conducted at Michigan Technological University with the objective to design and develop an automated robotic system for precise stacking of highway signposts, while complying with the required stacking pattern as well as time constraints. The design and...
Tire road noise is considered as the major noise source in traffic noise and as a health problem today. Existing methods to measure the tire road noise suffer from several disadvantages which led to the development of an alternative method, namely the tire cavity sound measurement method. Due to the high costs of existing prototypes, this method is not applicable for field operational tests and to...
We present a Markov Decision Process (MDP) approach to compute policies that can aid the management of human weight loss. We show that the problem can be formulated as a Markov Chain under a reasonable set of assumptions. The states represent the quantized weight of a participant. The transitions between the states represent nutrition and exercise actions. A policy computed using this model represents...
Modularity for ground vehicle systems has been viewed as a potential solution for the military to meet a variety of changing mission demands without keeping a large inventory of vehicles in a fleet. Defining the module concepts is a significant challenge that impacts the effectiveness of the modularity solution. In this paper, we propose a functional synthesis method to design a set of modules comprising...
Infectious diseases and their transmission are good examples of complex systems, with several interacting and interdependent components. We develop an agent-based simulation of the living condition of a typical slum setting in Nigeria which is considered to have a higher incidence and prevalence of tuberculosis. We consider the epidemiology of the disease and create a dynamic model, incorporating...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.