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2010

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Articles 61 - 75 of 75

Full-Text Articles in Engineering

Impact Of Demand Correlation And Information Sharing In A Capacitated Supply Chain With Multiple Retailers, Chanel Helper, Lauren Davis, Wenbin Wei Dec 2009

Impact Of Demand Correlation And Information Sharing In A Capacitated Supply Chain With Multiple Retailers, Chanel Helper, Lauren Davis, Wenbin Wei

Dr. Lauren B Davis

This paper considers a single product, two-echelon capacity constrainedsupplychain consisting of a supplier and two retailers facing correlated end-item demand. We use a decentralized Markov decision process with restricted observations to represent this system and conduct a numerical study to quantify the benefits of information sharing to the retailers under varying levels of supplier capacity and supply allocation mechanisms. Our results show an inverse relationship between capacity and information and indicate the retailers can achieve significant benefits as a result of the information sharing partnership.


Flight Attendant/Pilot Communication, In A Post 9/11 Environment: Viewed From Both Sides Of The Fortress Door"., Lori Brown Dec 2009

Flight Attendant/Pilot Communication, In A Post 9/11 Environment: Viewed From Both Sides Of The Fortress Door"., Lori Brown

Lori J. Brown

Reports and a recent global survey (Brown, et al., 2010) reported that out of 271 pilots and flight attendants, 13% indicated a discrete wireless communication device would not enhance safety, 18% indicate a slight effect, 33% indicated a device may somewhat enhance safety, and 21% indicated the device would greatly enhance safety. ...


Engineering Students' Definitions Of And Responses To Self-Directed Learning, Jonathan Stolk, Rob Martello, Mark Somerville, John Geddes Dec 2009

Engineering Students' Definitions Of And Responses To Self-Directed Learning, Jonathan Stolk, Rob Martello, Mark Somerville, John Geddes

Mark Somerville

COLLEGE INSTRUCTORS have struggled with a lack of self-directed learning (SDL) development in their students for many decades. Self-direction is by no means a new topic in teaching and learning, but it is one of growing significance in engineering educational discourse. In 1969, Carl Rogers articulated the need for flexible, independent learners: Teaching and the imparting of knowledge make sense in an unchanging environment. This is why it has been an unquestioned function for centuries. But if there is one truth about modern man, it is that he lives in an environment which is continually changing . . .We are, …


The Effect Of Curvature Rate On The Received Power In Parabolic Reflector, Amean Al_Safi Dec 2009

The Effect Of Curvature Rate On The Received Power In Parabolic Reflector, Amean Al_Safi

Amean S Al_Safi

In this paper we study the effect of curvature rate on the generated electric field at the focus point if the frequency and diameter are constants .We assume that the incident electromagnetic waves distributed uniformly on each point of the reflector surface ;hence we can imagine that this reflector has uniform surface charge ,and this body will generate an electric field on all points in front of it (including the focus point) . This field can be obtained by using coulomb’s law .The derived expression for electric field show that X and Y components will vanish and the electric field …


Building An Understanding Of Heat Transfer Concepts In Undergraduate Chemical Engineering Courses, Michael Prince, M. Vigeant, K. Nottis Dec 2009

Building An Understanding Of Heat Transfer Concepts In Undergraduate Chemical Engineering Courses, Michael Prince, M. Vigeant, K. Nottis

Michael J. Prince

No abstract provided.


Ontology-Based Information Extraction For Analyzing It Services, Amit Deokar, Sagnika Sen Dec 2009

Ontology-Based Information Extraction For Analyzing It Services, Amit Deokar, Sagnika Sen

Amit Deokar

Service Level Agreements (SLA) for multi-service Information Technology (IT) outsourcing contracts contain vast amounts of textual information. The SLAs provide details about a specific service, Key Performance Indicators (KPI) to measure its performance; as well as process elements, such as activities, events, and resources that are integral in achieving performance goals. However, KPIs and the process elements may be interrelated. The knowledge of such interrelationships is often tacitly present in the SLAs. The aim of our research is to extract this hidden information from IT service contracts and analyze them to empower customers of IT services to make better performance …


New Twelve Node Serendipity Quadrilateral Plate Bending Element Based On Mindlin-Reissner Theory Using Integrated Force Method, Zamin Jumaat Dec 2009

New Twelve Node Serendipity Quadrilateral Plate Bending Element Based On Mindlin-Reissner Theory Using Integrated Force Method, Zamin Jumaat

Zamin Jumaat

The Integrated Force Method (IFM) is a novel matrix formulation developed for analyzing the civil, mechanical and aerospace engineering structures. In this method all independent/internal forces are treated as unknown variables which are calculated by simultaneously imposing equations of equilibrium and compatibility conditions. This paper presents a new 12-node serendipity quadrilateral plate bending element MQP12 for the analysis of thin and thick plate problems using IFM. The MindlinReissner plate theory has been employed in the formulation which accounts the effect of shear deformation. The performance of this new element with respect to accuracy and convergence is studied by analyzing many …


A Review Of Autoimmune Diseases Associated With Cancer, Patricia Tai, Edward Yu, Kurian Joseph, Thomas Miale Dec 2009

A Review Of Autoimmune Diseases Associated With Cancer, Patricia Tai, Edward Yu, Kurian Joseph, Thomas Miale

Edward Yu

The focus of this review is on the relationships between autoimmune diseases and cancer from two closely related perspectives: 1.Those autoimmune diseases which are often associated with malignancies. 2.Those prevalent cancers which may increase the risks of developing autoimmune disorders. The review concludes with a brief discussion of some selected innovative approaches to cancer immunotherapy.


Better To Be Frustrated Than Bored: The Incidence, Persistence, And Impact Of Learners' Cognitive-Affective States During Interactions With Three Different Computer-Based Learning Environments, Ryan Baker, Ma.Mercedes Rodrigo, Sidney D'Mello, Arthur Graesser Dec 2009

Better To Be Frustrated Than Bored: The Incidence, Persistence, And Impact Of Learners' Cognitive-Affective States During Interactions With Three Different Computer-Based Learning Environments, Ryan Baker, Ma.Mercedes Rodrigo, Sidney D'Mello, Arthur Graesser

Ryan S.J.d. Baker

We study the incidence (rate of occurrence), persistence (rate of reoccurrence immediately after occurrence), and impact (effect on behavior) of students’ cognitive-affective states during their use of three different computer-based learning environments. Students’ cognitive-affective states are studied using different populations (Philippines, USA), different methods (quantitative field observation, self-report), and different types of learning environments (dialogue tutor, problemsolving game, and problem-solving based Intelligent Tutoring System). By varying the studies along these multiple factors, we can have greater confidence that findings which generalize across studies are robust. The incidence, persistence, and impact of boredom, frustration, confusion, engaged concentration, delight, and surprise were …


Using A Majority Voting Hardware Method On Weather Information To Increase The Accuracy Of Decision Making Methods, Sanaz Asadinia Dec 2009

Using A Majority Voting Hardware Method On Weather Information To Increase The Accuracy Of Decision Making Methods, Sanaz Asadinia

Sanaz Asadinia

No abstract provided.


Dynamic Pickup And Delivery Problems, Gerardo Berbeglia Dec 2009

Dynamic Pickup And Delivery Problems, Gerardo Berbeglia

Gerardo Berbeglia

No abstract provided.


Engineering Students' Definitions Of And Responses To Self-Directed Learning, Jonathan Stolk, Rob Martello, Mark Somerville, John Geddes Dec 2009

Engineering Students' Definitions Of And Responses To Self-Directed Learning, Jonathan Stolk, Rob Martello, Mark Somerville, John Geddes

Robert Martello

COLLEGE INSTRUCTORS have struggled with a lack of self-directed learning (SDL) development in their students for many decades. Self-direction is by no means a new topic in teaching and learning, but it is one of growing significance in engineering educational discourse. In 1969, Carl Rogers articulated the need for flexible, independent learners: Teaching and the imparting of knowledge make sense in an unchanging environment. This is why it has been an unquestioned function for centuries. But if there is one truth about modern man, it is that he lives in an environment which is continually changing . . .We are, …


Engineering Students' Definitions Of And Responses To Self-Directed Learning, Jonathan Stolk, Rob Martello, Mark Somerville, John Geddes Dec 2009

Engineering Students' Definitions Of And Responses To Self-Directed Learning, Jonathan Stolk, Rob Martello, Mark Somerville, John Geddes

Jonathan Stolk

COLLEGE INSTRUCTORS have struggled with a lack of self-directed learning (SDL) development in their students for many decades. Self-direction is by no means a new topic in teaching and learning, but it is one of growing significance in engineering educational discourse. In 1969, Carl Rogers articulated the need for flexible, independent learners: Teaching and the imparting of knowledge make sense in an unchanging environment. This is why it has been an unquestioned function for centuries. But if there is one truth about modern man, it is that he lives in an environment which is continually changing . . .We are, …


A Hybrid Routing Algorithm Based On Ant Colony And Zhls Routing Protocol For Manet, Marjan Rafsanjani, Sanaz Asadinia, Farzaneh Pakzad Dec 2009

A Hybrid Routing Algorithm Based On Ant Colony And Zhls Routing Protocol For Manet, Marjan Rafsanjani, Sanaz Asadinia, Farzaneh Pakzad

Sanaz Asadinia

Mobile Ad hoc networks (MANETs) require dynamic routing schemes for adequate performance. This paper, presents a new routing algorithm for MANETs, which combines the idea of ant colony optimization with Zone-based Hierarchical Link State (ZHLS) protocol. Ant colony optimization (ACO) is a class of Swarm Intelligence (SI) algorithms. SI is the local interaction of many simple agents to achieve a global goal. SI is based on social insect for solving different types of problems. ACO algorithm uses mobile agents called ants to explore network. Ants help to find paths between two nodes in the network. Our algorithm is based on …


Biological Treatment Processes For Fish Processing Wastewater–A Review, Pankaj Chowdhury, T. Viraraghavan, A. Srinivasan Dec 2009

Biological Treatment Processes For Fish Processing Wastewater–A Review, Pankaj Chowdhury, T. Viraraghavan, A. Srinivasan

PC

Water consumption in a fish-processing industry and high-strength wastewater from such an industry are of great concern world-wide. Liquid effluent regulations are becoming more stringent day by day. Biological treatment is the best option for such a wastewater. Anaerobic processes such as upflow anaerobic sludge blanket (UASB) reactor, anaerobic filter (AF) and anaerobic fluidized bed (AFB) reactor can achieve high (80–90%) organics removal and produce biogas. Aerobic processes such as activated sludge, rotating biological contactor, trickling filter and lagoons are also suitable for organics removal. Anaerobic digestion followed by an aerobic process is an optimal process option for fish processing …