Gaver, Donald P.
Overview
Works:  114 works in 223 publications in 1 language and 371 library holdings 

Roles:  Author 
Publication Timeline
.
Most widely held works by
Donald P Gaver
Estimating aircraft recoverable spares requirements with cannibalization of designated items by
Donald P Gaver(
Book
)
4 editions published in 1993 in English and held by 102 WorldCat member libraries worldwide
To estimate requirements for primary operating stocks (POS) of aircraft recoverable spare parts, the Air Force has not, as a matter of policy, assumed that parts shortages can be consolidated among aircraft (cannibalized). It has, however, assumed perfect consolidation of shortages in its computation of war readiness spares requirements, designating which parts are relatively easy to cannibalize and which are not. The research described in this report shows that a policy of designated cannibalization in estimating POS requirements is costeffective. The authors present a computational model that incorporates designated cannibalization, determining the probability of meeting a specified aircraft availability goal with a specified confidence. They conclude that a designated cannibalization policy for POS can reduce safety stock requirements while maintaining traditional levels of system performance
4 editions published in 1993 in English and held by 102 WorldCat member libraries worldwide
To estimate requirements for primary operating stocks (POS) of aircraft recoverable spare parts, the Air Force has not, as a matter of policy, assumed that parts shortages can be consolidated among aircraft (cannibalized). It has, however, assumed perfect consolidation of shortages in its computation of war readiness spares requirements, designating which parts are relatively easy to cannibalize and which are not. The research described in this report shows that a policy of designated cannibalization in estimating POS requirements is costeffective. The authors present a computational model that incorporates designated cannibalization, determining the probability of meeting a specified aircraft availability goal with a specified confidence. They conclude that a designated cannibalization policy for POS can reduce safety stock requirements while maintaining traditional levels of system performance
Methodology for an operationallybased test length decision by
Donald P Gaver(
)
1 edition published in 1997 in Undetermined and held by 9 WorldCat member libraries worldwide
Weapon systems that function destructively (e.g. missile or torpedo) are to be acquired in a lot of size m. Acceptance of the lot is based on the result of an operational test, administered to part of the lot if the test results indicate positive operational value the lot is accepted and the remaining part of the lot if fielded; otherwise the lot is 'rejected'. A test plan is designed that establishes an optimal number of weapon copies to test, given (models of) the operational gain of the fielded weapon under two tactical options, and the uncertainty in the weapon's predicted probability of success after the test is complete. The major test objective is to realize possible operational utility from the lot of items, and secondarily to demonstrate arbitrary levels of certainty
1 edition published in 1997 in Undetermined and held by 9 WorldCat member libraries worldwide
Weapon systems that function destructively (e.g. missile or torpedo) are to be acquired in a lot of size m. Acceptance of the lot is based on the result of an operational test, administered to part of the lot if the test results indicate positive operational value the lot is accepted and the remaining part of the lot if fielded; otherwise the lot is 'rejected'. A test plan is designed that establishes an optimal number of weapon copies to test, given (models of) the operational gain of the fielded weapon under two tactical options, and the uncertainty in the weapon's predicted probability of success after the test is complete. The major test objective is to realize possible operational utility from the lot of items, and secondarily to demonstrate arbitrary levels of certainty
System availability by
Donald P Gaver(
)
1 edition published in 2007 in Undetermined and held by 9 WorldCat member libraries worldwide
Availability quantifies the propensity of a system to be functionally operative upon demand. It increases if operating times between failures (up times) are long, and decreases if, following failure or anticipatory removal, logistics delays and repair (down times) are protracted. This chapter summarizes the general availability concept and discusses the limitation of operational availability suggesting that mission availability is often more useful and appropriate
1 edition published in 2007 in Undetermined and held by 9 WorldCat member libraries worldwide
Availability quantifies the propensity of a system to be functionally operative upon demand. It increases if operating times between failures (up times) are long, and decreases if, following failure or anticipatory removal, logistics delays and repair (down times) are protracted. This chapter summarizes the general availability concept and discusses the limitation of operational availability suggesting that mission availability is often more useful and appropriate
Nonparametric estimation of the probability of a long delay in the M/G/1 queue by
Donald P Gaver(
)
1 edition published in 1986 in Undetermined and held by 9 WorldCat member libraries worldwide
An M/G/1 queue is approached by stationary Poisson traffic with known arrival rate. Observations of service times are all that is known about the service distribution. Nonparametric estimates of the probability of a long customer delay are given. The estimates include the solution of an equation involving the empirical transform of the service times. Asymptotic properties of the estimates are derived. Simulation studies of the small sample behavior of the estimates are reported. The jackknife is used to provide error assessment of the estimates and to construct confidence intervals in the simulation studies of small sample behavior. Keywords: Asymptotic Normality
1 edition published in 1986 in Undetermined and held by 9 WorldCat member libraries worldwide
An M/G/1 queue is approached by stationary Poisson traffic with known arrival rate. Observations of service times are all that is known about the service distribution. Nonparametric estimates of the probability of a long customer delay are given. The estimates include the solution of an equation involving the empirical transform of the service times. Asymptotic properties of the estimates are derived. Simulation studies of the small sample behavior of the estimates are reported. The jackknife is used to provide error assessment of the estimates and to construct confidence intervals in the simulation studies of small sample behavior. Keywords: Asymptotic Normality
Assessing and Controlling the Availability of FailureDegraded Service Agents by
Donald P Gaver(
)
1 edition published in 1998 in Undetermined and held by 9 WorldCat member libraries worldwide
http://archive.org/details/assessingcontr25gave
1 edition published in 1998 in Undetermined and held by 9 WorldCat member libraries worldwide
http://archive.org/details/assessingcontr25gave
Assessing resource requirements for maritime domain awareness and protection (security) by
Donald P Gaver(
)
1 edition published in 2006 in Undetermined and held by 9 WorldCat member libraries worldwide
A maritime domain or region contains a number w of nonhostile W (White) vessels of interest. Hostile R (Red) vessels enter the domain. The Rs are traveling through the domain toward targets. Overhead, friendly (Blue) sensors (S) patrol the domain and classify (perhaps incorrectly) detected vessels of interest as R or W. The misclassification of a W as an R is a false positive. An overhead sensor follows (or tracks) any vessel it classifies as R until it is relieved by another platform, perhaps a destroyer pair (DD). The overhead sensor is here assumed unable to detect and classify additional vessels while it is following a suspicious vessel; this may well be a somewhat pessimistic assumption, very possibly richer possibilities based on additional assets (such as unmanned aerial vehicles (UAVs)) are available, but loss of track may occur as well as misclassification. Deterministic and stochastic models are formulated and studied to evaluate the probability that Rs are successfully neutralized before reaching their destination. The model results quantify the effect of the resources and time needed to prosecute misclassified Ws (false positives) on the probability of successfully neutralizing R. The results indicate that the probability of neutralizing an R vessel is very sensitive to the false positive rate. Technologies, processes, and procedures that can decrease the false positive rate will increase the effectiveness of the Maritime Intercept Operation (MIO). p. iii
1 edition published in 2006 in Undetermined and held by 9 WorldCat member libraries worldwide
A maritime domain or region contains a number w of nonhostile W (White) vessels of interest. Hostile R (Red) vessels enter the domain. The Rs are traveling through the domain toward targets. Overhead, friendly (Blue) sensors (S) patrol the domain and classify (perhaps incorrectly) detected vessels of interest as R or W. The misclassification of a W as an R is a false positive. An overhead sensor follows (or tracks) any vessel it classifies as R until it is relieved by another platform, perhaps a destroyer pair (DD). The overhead sensor is here assumed unable to detect and classify additional vessels while it is following a suspicious vessel; this may well be a somewhat pessimistic assumption, very possibly richer possibilities based on additional assets (such as unmanned aerial vehicles (UAVs)) are available, but loss of track may occur as well as misclassification. Deterministic and stochastic models are formulated and studied to evaluate the probability that Rs are successfully neutralized before reaching their destination. The model results quantify the effect of the resources and time needed to prosecute misclassified Ws (false positives) on the probability of successfully neutralizing R. The results indicate that the probability of neutralizing an R vessel is very sensitive to the false positive rate. Technologies, processes, and procedures that can decrease the false positive rate will increase the effectiveness of the Maritime Intercept Operation (MIO). p. iii
Data analysis and modeling of Arctic sea ice subsurface roughness by
Donald P Gaver(
)
1 edition published in 1982 in Undetermined and held by 9 WorldCat member libraries worldwide
Statistical data analysis and models are used to characterize and summarize the roughness of the underside of sea ice in the Arctic. Keel spacings and depths are modeled by sculptured exponentials, and by gamma distributions. The data studied was obtained by upward looking sonar on the submarine GURNARD during April, 1976, in the Beaufort Sea. The models and methods should be more widely applicable
1 edition published in 1982 in Undetermined and held by 9 WorldCat member libraries worldwide
Statistical data analysis and models are used to characterize and summarize the roughness of the underside of sea ice in the Arctic. Keel spacings and depths are modeled by sculptured exponentials, and by gamma distributions. The data studied was obtained by upward looking sonar on the submarine GURNARD during April, 1976, in the Beaufort Sea. The models and methods should be more widely applicable
Modern military evolutionary acquisition and the ramifications of RAMS by
Donald P Gaver(
)
1 edition published in 2005 in Undetermined and held by 9 WorldCat member libraries worldwide
This paper describes the administrative philosophy that currently guides the (evolutionary) acquisition of U.S. military systems. It then sketches a preliminary mathematical model that allows study of the effect of various ways to spend a fixed budget for Block b+1 upgrade so as to obtain a maximum expected number of fielded system upgrades that is effective in the field. This includes the option of simply fielding more of the previous, Block b, design units. Effectiveness/capability growth is the design objective, but testing and fault removal provides for reliability growth. The model accounts for various levels of developmental and testing effort at various rates, and for obsolescence of the previous (Block b) and forthcoming (Block b+1) system versions
1 edition published in 2005 in Undetermined and held by 9 WorldCat member libraries worldwide
This paper describes the administrative philosophy that currently guides the (evolutionary) acquisition of U.S. military systems. It then sketches a preliminary mathematical model that allows study of the effect of various ways to spend a fixed budget for Block b+1 upgrade so as to obtain a maximum expected number of fielded system upgrades that is effective in the field. This includes the option of simply fielding more of the previous, Block b, design units. Effectiveness/capability growth is the design objective, but testing and fault removal provides for reliability growth. The model accounts for various levels of developmental and testing effort at various rates, and for obsolescence of the previous (Block b) and forthcoming (Block b+1) system versions
DISCOTIC: A DISCRETETIME ANALYTICAL METAMODEL FOR USE IN COMBAT SYSTEMS STUDIES THAT UTILIZE HIGH RESOLUTION SIMULATION
MODELS by
Donald P Gaver(
)
1 edition published in 2013 in Undetermined and held by 9 WorldCat member libraries worldwide
1 edition published in 2013 in Undetermined and held by 9 WorldCat member libraries worldwide
Modeling and estimating system availability : special report by
Donald P Gaver(
Book
)
5 editions published between 1976 and 1977 in English and held by 8 WorldCat member libraries worldwide
A variety of probability models for single and multiple unit, failureprone but repairable, systems are reviewed. The purpose of the paper is to provide methods for expressing the uncertainties in system availability in terms of uncertainties in component parameters. A loglinear transformation and the 'jackknife' are shown to be effective. (Author)
5 editions published between 1976 and 1977 in English and held by 8 WorldCat member libraries worldwide
A variety of probability models for single and multiple unit, failureprone but repairable, systems are reviewed. The purpose of the paper is to provide methods for expressing the uncertainties in system availability in terms of uncertainties in component parameters. A loglinear transformation and the 'jackknife' are shown to be effective. (Author)
Accommodation of secondclass traffic by
Donald P Gaver(
Book
)
4 editions published between 1962 and 1963 in English and held by 6 WorldCat member libraries worldwide
4 editions published between 1962 and 1963 in English and held by 6 WorldCat member libraries worldwide
Modeling the operation of a platoon of amphibious vehicles for support of operational test and evalution (OT & E) by
Donald P Gaver(
Book
)
4 editions published in 2001 in English and held by 4 WorldCat member libraries worldwide
This report documents an analytical model to assist in the planning of the Operational Test and Evaluation (OT & E) of the Marine Corps' prospective Advanced Amphibious Assault Vehicle (AAAV). The model's emphasis is on suitability issues such as Operational Availability in an onland (after ocean transit) mission region. The model predicts strong sensitivity to the form of an assumed distribution of times to vehicle breakdown, and hence recommends that appropriate test data be obtained to reveal that form (the mean alone is inadequate). Removal of design faults likely to cause early failures is encouraged. The AAAV design is for a relatively lightweight but technologically advanced (mobile and lethal) amphibious vehicle that operates in platoons. If individual vehicles break down they must often be transported for repair, for example, to their point of origin, a ship. One option is to allow another platoon member to tow; another is to assign an auxiliary vehicle to transport. Such duties may seriously diminish the platoon productive mission availability (the towing/transport agents may themselves fail). OT & E should be designed to fully test for the systemwide effect of force (platoon, and beyond) sustainability requirements
4 editions published in 2001 in English and held by 4 WorldCat member libraries worldwide
This report documents an analytical model to assist in the planning of the Operational Test and Evaluation (OT & E) of the Marine Corps' prospective Advanced Amphibious Assault Vehicle (AAAV). The model's emphasis is on suitability issues such as Operational Availability in an onland (after ocean transit) mission region. The model predicts strong sensitivity to the form of an assumed distribution of times to vehicle breakdown, and hence recommends that appropriate test data be obtained to reveal that form (the mean alone is inadequate). Removal of design faults likely to cause early failures is encouraged. The AAAV design is for a relatively lightweight but technologically advanced (mobile and lethal) amphibious vehicle that operates in platoons. If individual vehicles break down they must often be transported for repair, for example, to their point of origin, a ship. One option is to allow another platoon member to tow; another is to assign an auxiliary vehicle to transport. Such duties may seriously diminish the platoon productive mission availability (the towing/transport agents may themselves fail). OT & E should be designed to fully test for the systemwide effect of force (platoon, and beyond) sustainability requirements
Approximate Models for Processor Utilization in Multiprogrammed Computer Systems by
Donald P Gaver(
Book
)
4 editions published in 1972 in English and held by 4 WorldCat member libraries worldwide
The paper presents results of an approximation study of cyclic queueing phenomena that occur in multiprogrammed computer systems. Based on Wald's Identity and using ideas of diffusion, the objective is to develop convenient and nearly explicit formulas relating processor use in such systems to simple program parameters and the level of multiprogramming. Some numerical results to indicate the quality of the proposed approximation are given. (Author)
4 editions published in 1972 in English and held by 4 WorldCat member libraries worldwide
The paper presents results of an approximation study of cyclic queueing phenomena that occur in multiprogrammed computer systems. Based on Wald's Identity and using ideas of diffusion, the objective is to develop convenient and nearly explicit formulas relating processor use in such systems to simple program parameters and the level of multiprogramming. Some numerical results to indicate the quality of the proposed approximation are given. (Author)
Statistical methods of probable use for understanding remote sensing data by
Donald P Gaver(
Book
)
3 editions published in 1979 in English and held by 4 WorldCat member libraries worldwide
This report outlines several new statistical approaches to data problems likely to be encountered when remote sensing methods are used. The methods described are robust regression analysis, smoothing, and modeling and estimation of ice pressure ridge characteristics
3 editions published in 1979 in English and held by 4 WorldCat member libraries worldwide
This report outlines several new statistical approaches to data problems likely to be encountered when remote sensing methods are used. The methods described are robust regression analysis, smoothing, and modeling and estimation of ice pressure ridge characteristics
Models for transmission and control of bioterroristic epidemics(
Book
)
2 editions published in 2004 in English and held by 3 WorldCat member libraries worldwide
A deterministic model for control of a bioterrorist epidemic in a large nonhomogeneous population is presented. Primary considerations in model development are the representation of a large nonhomogeneous population of individuals and the implementation of the model for quick numerical execution. The model represents the effect of mass prevaccination and mass vaccination during the epidemic. It is recognized that the vaccination can result in life threatening complications. The model also represents the effect of tracing and quarantining as control options. The model has been implemented in Java for a Webbased educational tool. Numerical examples (p. 1215) illustrate possible behavior of populations exposed to such a disease as smallpox. Various disease controls such as vaccination and case tracing are studied
2 editions published in 2004 in English and held by 3 WorldCat member libraries worldwide
A deterministic model for control of a bioterrorist epidemic in a large nonhomogeneous population is presented. Primary considerations in model development are the representation of a large nonhomogeneous population of individuals and the implementation of the model for quick numerical execution. The model represents the effect of mass prevaccination and mass vaccination during the epidemic. It is recognized that the vaccination can result in life threatening complications. The model also represents the effect of tracing and quarantining as control options. The model has been implemented in Java for a Webbased educational tool. Numerical examples (p. 1215) illustrate possible behavior of populations exposed to such a disease as smallpox. Various disease controls such as vaccination and case tracing are studied
A diffusion approximation analysis of a general ncompartment system by
Donald P Gaver(
Book
)
3 editions published in 1977 in English and held by 3 WorldCat member libraries worldwide
A new approach to the stochastic analysis of general compartment models is presented. The analysis is based on the concept of diffusion approximations. The state of a compartment system is represented as the superposition of a deterministic process, characterized by a system of ordinary differential equations, and a random noise process characterized by stochastic differential equations. All transition rate parameters are permitted to be time dependent. Numerical solutions are presented for the twocompartment case. Extensions to nonlinear compartment models are discussed
3 editions published in 1977 in English and held by 3 WorldCat member libraries worldwide
A new approach to the stochastic analysis of general compartment models is presented. The analysis is based on the concept of diffusion approximations. The state of a compartment system is represented as the superposition of a deterministic process, characterized by a system of ordinary differential equations, and a random noise process characterized by stochastic differential equations. All transition rate parameters are permitted to be time dependent. Numerical solutions are presented for the twocompartment case. Extensions to nonlinear compartment models are discussed
Approximate Models for Central Server Systems with Two Job Types by John P Lehoczky(
Book
)
3 editions published in 1977 in English and held by 3 WorldCat member libraries worldwide
Two new approximation techniques for describing the performance of a closed queueing network when two or more job types are present are introduced and analyzed. The approximations apply in cases where a product form steady state solution can not be obtained, for example in the firstcomefirst served single server queue case. This approximation provides a method of reducing the state space to a small fraction of that needed for an implementation of the GaverHumfeld method. Numerical results illustrate the excellent accuracy of these techniques. (Author)
3 editions published in 1977 in English and held by 3 WorldCat member libraries worldwide
Two new approximation techniques for describing the performance of a closed queueing network when two or more job types are present are introduced and analyzed. The approximations apply in cases where a product form steady state solution can not be obtained, for example in the firstcomefirst served single server queue case. This approximation provides a method of reducing the state space to a small fraction of that needed for an implementation of the GaverHumfeld method. Numerical results illustrate the excellent accuracy of these techniques. (Author)
A Diffusion Approximation Model for a Communication System Allowing Message Interference by
Donald P Gaver(
Book
)
3 editions published in 1977 in English and held by 3 WorldCat member libraries worldwide
Mathematical probability models are presented to describe the service furnished to messages approaching c communications channels, on which messages in progress may be 'destroyed' by an attempted access by a new message. Retries by destroyed messages are modeled. Numerical results, using the models, are compared to simulations, validating model usefulness. (Author)
3 editions published in 1977 in English and held by 3 WorldCat member libraries worldwide
Mathematical probability models are presented to describe the service furnished to messages approaching c communications channels, on which messages in progress may be 'destroyed' by an attempted access by a new message. Retries by destroyed messages are modeled. Numerical results, using the models, are compared to simulations, validating model usefulness. (Author)
Doctors on Ships by
Donald P Gaver(
Book
)
3 editions published in 1972 in English and held by 3 WorldCat member libraries worldwide
The decision as to whether a medical doctor, or other expensive specialist, should be carried aboard ship depends upon demand for service, consequences of not providing this service, and cost of providing the service. A simple preliminary mathematical model to aid in making this decison wisely is presented. (Author)
3 editions published in 1972 in English and held by 3 WorldCat member libraries worldwide
The decision as to whether a medical doctor, or other expensive specialist, should be carried aboard ship depends upon demand for service, consequences of not providing this service, and cost of providing the service. A simple preliminary mathematical model to aid in making this decison wisely is presented. (Author)
Proposal for Research in Quantitative Bioassay Methodology and Risk Analysis and Characterization(
)
3 editions published between 1994 and 1995 in English and held by 3 WorldCat member libraries worldwide
A summary of research conducted during the period January 11, 1993  January 11, 1994, is given. Included are the results of a simulation study of the behavior of estimators of the teratogenic index; a statistical procedure to assess between tank variability and the results of its use on data from a bioassay experiment with medaka; and procedures to combine the results of different experiments using different biomarkers
3 editions published between 1994 and 1995 in English and held by 3 WorldCat member libraries worldwide
A summary of research conducted during the period January 11, 1993  January 11, 1994, is given. Included are the results of a simulation study of the behavior of estimators of the teratogenic index; a statistical procedure to assess between tank variability and the results of its use on data from a bioassay experiment with medaka; and procedures to combine the results of different experiments using different biomarkers
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Related Identities
 Isaacson, Karen E.
 Abell, John B.
 Rand Corporation
 United States Air Force
 Naval Postgraduate School (U.S.)
 Jacobs, Patricia A. Author
 NAVAL POSTGRADUATE SCHOOL MONTEREY CA Dept. of OPERATIONS RESEARCH
 NAVAL POSTGRADUATE SCHOOL MONTEREY CA
 Lehoczky, John P. Author
 Project Air Force (U.S.). Resource Management and Systems Acquisition Program
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Airplanes, MilitaryPartsCosts Armed ForcesEquipment and suppliesMaintenance and repair Armed ForcesProcurement Canada Computer programming Cost effectivenessMathematical models Decision makingMathematical models Diffusion processes Distribution (Probability theory) Estimation theory Industrial equipmentReliability LogisticsMathematical models Mathematical statistics Motor vehicles, AmphibiousTesting Multiprogramming (Electronic computers) Nuclear power plants Nuclear power plantsMathematical models Nuclear power plantsSafety measuresMathematical models Operations research Probabilities Production schedulingMathematical models Queuing theory Regression analysis Remote sensingStatistical methods Scientists Stochastic differential equations Systems availability TelecommunicationMathematical models Traffic flowMathematical models United States United States.Air Force United States.Navy
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