Operational-Mission-Oriented Method for Equipment Support Resource Verification

2011 ◽  
Vol 217-218 ◽  
pp. 1020-1025
Author(s):  
Le Chen ◽  
Yong Li Yu ◽  
Zheng Ping Shu ◽  
Dong Dong Li ◽  
Yuan Li
Keyword(s):  
Support System ◽  
Transformation Model ◽  
System Support ◽  
Impact Mechanism ◽  
Support Resources ◽  
Mission System ◽  
Support Resource ◽  
Integrated Logistics ◽  
The Relationship ◽  
Key Parameter

With elaborating the research evolvement of equipment support resource verification, this paper demonstrated the significance of operational mission to this research. It decomposed Equipment Support System (ESS) into three subsystems: operational mission system, support object system and support resources system. According to the theories of Integrated Logistics Support, the overall parameter model was established to depict the relationship and impact mechanism of ESS’s components. Focusing on the key parameter: mean logistic delay time (MLDT), this paper proposed a transformation model to convert operational mission requirements to equipment support requirements.Transformation model can predict and ascertain all support resources needed to accomplish operational mission scientifically.

Research on the Precise Equipment Support

2011 ◽  
Vol 121-126 ◽  
pp. 2233-2237
Author(s):  
Xiao Liang Liu ◽  
Le Chen ◽  
Jia Ni Liu ◽  
Hong Min Yu
Keyword(s):  
Support System ◽  
Quantitative Description ◽  
Target System ◽  
System Support ◽  
Operational Readiness ◽  
Mission System ◽  
Two Parameters ◽  
Integrated Logistics ◽  
Running Mode

This paper is oriented to typical operation missions, started with the concept and connotation of precise support, divided the precise support into three parts, including operational mission system, support target system and support system, systematically analyzed the mutual relationships among the subsystems, used operational readiness and mission sustainability these two parameters of integrated logistics support to make quantitative description, then discussed the running mode and process of precise equipment support.

scholarly journals Novel methods of estimating relative pollen productivity: A key parameter for reconstruction of past land cover from pollen records

2019 ◽  
Vol 43 (6) ◽  
pp. 731-753 ◽  
Author(s):  
Yiman Fang ◽  
Chunmei Ma ◽  
M Jane Bunting
Keyword(s):  
Land Cover ◽  
Empirical Data ◽  
Alternative Methods ◽  
Model Parameters ◽  
Value Analysis ◽  
Pollen Productivity ◽  
Tropical China ◽  
The Relationship ◽  
Pollen Records ◽  
Key Parameter

Reconstructing land cover from pollen data using mathematical models of the relationship between them has the potential to translate the many thousand pollen records produced over the last 100 years (over 2300 radiocarbon-dated pollen records exist for the UK alone) into formats relevant to ecologists, archaeologists and climate scientists. However, the reliability of these reconstructions depends on model parameters. A key parameter is Relative Pollen Productivity (RPP), usually estimated from empirical data using ‘Extended R Value analysis’ (ERV analysis). Lack of RPP estimates for many regions is currently a major limitation on reconstructing global land cover. We present two alternatives to ERV analysis, the Modified Davis Method and an iteration method, which use the same underlying model of the relationship between pollen and vegetation to estimate RPP from empirical data, but with different assumptions. We test them in simulation against ERV analysis, and use a case study of a problematic empirical dataset to determine whether they have the potential to increase the speed and geographic range of RPP estimation. The two alternative methods are shown to perform at least as well as ERV analysis in simulation. We also present new RPP estimates from southeastern sub-tropical China for nine taxa estimated using the Modified Davis Method. Adding these two methods to the ‘toolkit’ for land cover reconstruction from pollen records opens up the possibility to estimate a key parameter from existing datasets with less field time than using current methods. This can both speed up the inclusion of more of the globe in past land cover mapping exercises such as the PAGES Landcover6k working group and improve our understanding of how this parameter varies within a single taxon and the factors control that variation.

Dynamics of Political Support-Alienation

1980 ◽  
Vol 13 (1) ◽  
pp. 33-59 ◽  
Author(s):  
Edward N. Muller ◽  
Carol J. Williams
Keyword(s):  
Performance Evaluation ◽  
Panel Study ◽  
Political Support ◽  
System Support ◽  
Federal Republic Of Germany ◽  
Reciprocal Causation ◽  
Political Performance ◽  
Learning Hypothesis ◽  
Diffuse Support ◽  
The Relationship

Three hypotheses about the relationship between political performance (specific support) and attitude about the political system (diffuse support) are investigated. Data are from a two-wave panel study carried out during 1974–1976 in the Federal Republic of Germany. No support is found for an Independence hypothesis, which predicts that because system support is acquired during an early age it will be resistant to change during adulthood. The results indicate that the relationship between performance evaluation and system attitude is complex. Support is found for (1) a Social Learning hypothesis, which predicts that system support will respond to differential satisfaction with the performance of an incumbent administration, and (2) a Structuring hypothesis, which predicts that system attitude will influence one's evaluation of the performance of an incumbent administration. It is therefore not possible to rule out reciprocal causation between performance evaluation and system attitude, suggesting that unidirectional causal models are likely to misspecify the true relationship.

Study on Corner Contact Shock of Gear Transmission by ADAMS Software

2015 ◽  
Vol 778 ◽  
pp. 205-211
Author(s):  
Li He ◽  
Jin Yuan Tang
Keyword(s):  
Penetration Depth ◽  
Impact Velocity ◽  
Impact Force ◽  
Ansys Software ◽  
New Approach ◽  
Adams Software ◽  
Simulation Results ◽  
The Impact ◽  
The Relationship ◽  
Key Parameter

Solving gear meshing impact force problems by using ADAMS software is studied.A pair of tooth meshing model is established based on UG, modal neutral file is generated by using ANSYS software, calculating gear meshing impact after Importing ADAMS. The relationship between the impact velocity and the impact force by taking reasonable key parameter about penetration depth in ADAMS simulation.A new approach for studying gear meshing impact is proposed here, and the simulation results show that ADAMS software is a very useful tool for solving gear corner contact shock problems outside the normal path of action line.

Airfoil Deflection Characteristics During Rub Events

2011 ◽  
Vol 134 (1) ◽  
Author(s):  
Kevin E. Turner ◽  
Michael Dunn ◽  
Corso Padova
Keyword(s):  
Adverse Effects ◽  
Gas Turbine ◽  
Ohio State University ◽  
Applied Force ◽  
State University ◽  
Highly Nonlinear ◽  
The Ohio State University ◽  
Transient Forces ◽  
The Relationship ◽  
Key Parameter

The turbomachinery industry continually struggles with the adverse effects of contact rubs between airfoils and casings. The key parameter controlling the severity of a given rub event is the contact load produced when the airfoil tips incur into the casing. These highly nonlinear and transient forces are difficult to calculate and their effects on the static and rotating components are not well understood. To help provide this insight, experimental and analytical capabilities have been established and exercised through an alliance between GE Aviation and The Ohio State University Gas Turbine Laboratory. One of the early findings of the program is the influence of blade flexibility on the physics of rub events. The focus of this paper is to quantify the influence of airfoil flexibility through a novel modeling approach that is based on the relationship between the applied force duration and maximum tip deflection. Results from the model are compared with experimental results, providing sound verification.

Organic and chemical sources of nitrogen: its effect on nitrogen transformation and rice productivity under submerged conditions

1988 ◽  
Vol 111 (1) ◽  
pp. 91-94 ◽  
Author(s):  
P. K. Chakraborty ◽  
L. N. Mandal ◽  
Anup Majumdar
Keyword(s):  
Organic Nitrogen ◽  
Nitrogen Sources ◽  
Nitrogen Transformation ◽  
Soil Samples ◽  
Transformation Model ◽  
Nitrogen Use ◽  
Urea Treatment ◽  
Use Efficiency ◽  
The Relationship ◽  
Submerged Conditions

SummaryA field experiment was carried out in three wet seasons of 1982, 1983 and 1984 with various combinations of urea and organic nitrogen sources to investigate the nitrogen transformation and productivity of rice crop in a waterlogged situation. The treatments used were: (i) control (No), (ii) FYM + urea, (iii) Sesbania + urea, (iv) urea, the levels of nitrogen being 60 and 90 kg/ha and the proportion being 50:50 between organic and chemical sources where such combination was used. The soil samples were analysed for ammonium, hydrolysable and non-hydrolysable forms of nitrogen at 15, 30 and 45 days after transplanting. The release of hydrolysable and non-hydrolysable nitrogen was superior in the urea-Sesbania combination while the release of NH4·N was slightly better in FYM-urea combination. Yield of rice and apparent nitrogen use efficiency were highest in sole urea treatment and almost similar in FYM-urea and Sesbania + urea combinations. A statistical nitrogen-transformation model outlined the relationship among the various forms of soil nitrogen under submergence. The model suggested a strong correlation among the different forms of nitrogen during the earlier period of submergence.

Validation of the Crisis Triage Rating Scale for Psychiatric Emergencies

1991 ◽  
Vol 36 (9) ◽  
pp. 651-654 ◽  
Author(s):  
P. M. Turner ◽  
T.J. Turner
Keyword(s):  
Hospital Admission ◽  
Support System ◽  
Rating Scale ◽  
Psychiatric Patients ◽  
Psychiatric Unit ◽  
Psychiatric Emergencies ◽  
Emergency Hospital ◽  
Relative Contribution ◽  
Emergency Hospital Admission ◽  
The Relationship

Using a sample of 500 emergency psychiatric patients at Victoria Hospital in London, Ontario, this study replicated part of the research on the Crisis Triage Rating Scale (CTRS) conducted by Bengelsdorf, Levy, Emerson and Barile in 1984. The relationship between the suggested CTRS cut-off score and the decision whether or not to hospitalize the patient was studied, independently of these scores. The relative contribution of each of the subscales (Dangerousness, Support System and Ability to Cooperate) to this decision was also determined. The results of this study suggest that using a cut-off score of 9, the easily administered Crisis Triage Rating Scale could be an additional assessment aid in determining whether patients require emergency hospital admission to a psychiatric unit.

Parameter self-adaptation in biped navigation employing nonuniform randomized footstep planner

Robotica ◽  
2010 ◽  
Vol 28 (6) ◽  
pp. 929-936 ◽  
Author(s):  
Zeyang Xia ◽  
Jing Xiong ◽  
Ken Chen
Keyword(s):  
Neural Network ◽  
Bp Neural Network ◽  
Back Propagation ◽  
Planning Problem ◽  
Navigation Problem ◽  
Probability Threshold ◽  
Self Adaptation ◽  
The Relationship ◽  
Planning Problems ◽  
Key Parameter

SUMMARYIn our previous work, a random-sampling-based footstep planner has been proposed for global biped navigation. Goal-probability threshold (GPT) is the key parameter that controls the convergence rate of the goal-biased nonuniform sampling in the planner. In this paper, an approach to optimized GPT adaptation is explained by a benchmarking planning problem. We first construct a benchmarking model, in which the biped navigation problem is described in selected parameters, to study the relationship between these parameters and the optimized GPT. Then, a back-propagation (BP) neural network is employed to fit this relationship. With a trained BP neural network modular, the optimized GPT can be automatically generated according to the specifications of a planning problem. Compared with previous methods of manual and empirical tuning of GPT for individual planning problems, the proposed approach is self-adaptive. Numerical experiments verified the performance of the proposed approach and furthermore showed that planning with BP-generated GPTs is more stable. Besides the implementation in specific parameterized environments studied in this paper, we attempt to provide the frame of the proposed approach as a reference for footstep planning in other environments.

scholarly journals Gateway Literacy Retention Policies: Perspectives and Implications from the Field

2019 ◽  
Vol 15 (10) ◽  
Author(s):  
Jennifer Barrett-Tatum ◽  
Kristen Ashworth ◽  
David Scales
Keyword(s):  
Teacher Training ◽  
Support System ◽  
Grade Retention ◽  
State Policies ◽  
Drop Out ◽  
The Other ◽  
Literacy Intervention ◽  
The Relationship ◽  
Retention Policies ◽  
Over Time

South Carolina’s Read to Succeed Law (RTS) is different than the other 15 states’ literacy-based third grade retention laws. It mandates literacy intervention training for in-service and pre-service teachers. Research indicates academic gains from retention are short-lived, diminishing over time and increasing drop-out rates. Through a statewide survey, this study identifies educators’ perceptions and knowledge of retention and the RTS policy, and examines the relationship between knowledge and perceptions. Educators were not familiar with retention research or RTS specifics, but favored retention. Implications include the need for more teacher training regarding new state policies and the efficacy of their foundations. This study provides evidence that policymakers should consider the means of implementation and shoulder accountability for a structured and equitable support system.

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