Determination of an optimal set of design requirements using house of quality

1998 ◽  
Vol 16 (5) ◽  
pp. 569-581 ◽  
Author(s):  
Taeho Park ◽  
Kwang-Jae Kim
Keyword(s):  
House Of Quality ◽  
Design Requirements ◽  
Optimal Set

Human Systems Integration (HSI) in Navy Ship Manpower Reduction

1996 ◽  
Vol 40 (19) ◽  
pp. 977-981 ◽  
Author(s):  
J. Robert Bost ◽  
Thomas B. Malone ◽  
Clifford C. Baker ◽  
Charles D. Williams
Keyword(s):  
Problem Solving ◽  
Task Demands ◽  
Reduction Techniques ◽  
Front End ◽  
Human Systems Integration ◽  
Design Requirements ◽  
Workload Reduction ◽  
Specific Operator

The HSI approach to ship and ship system design for manning reduction is based on the standard human factors front-end analysis to identify functions and requirements, allocate functions to determine the role of the human vs. automation, identify approaches to reduce workload, and conduct task network workload simulation to establish the effectiveness of selected workload reduction techniques. The classes of workload reduction are focused on design requirements associated with automation of functions, consolidation of functions, simplification of function performance, and elimination of functions. Function Automation addresses the automation of functions previously performed manually and the determination of the roles of the human in automated or semi-automated functions. Function Consolidation requires a reassignment of functions among available operators to more evenly redistribute required workload. Function simplification requires that, for high driver functions and tasks assigned to a specific operator or maintainer, the demands that these functions and tasks make must be reduced to the greatest extent possible. Function/task demands include physical, cognitive, and perceptual-motor demands. Function Elimination involves removing a function from the ship through tele-operations or tele-maintenance with shoreside equipment tech-reps or maintenance experts, and reliance on collaboration tools to support dispersed team problem solving, or elimination of a function altogether.

Multi-Resolution Analysis of Edge-Texture Features for Mammographic Mass Classification

2019 ◽  
Vol 29 (10) ◽  
pp. 2050156
Author(s):  
Rinku Rabidas ◽  
Abhishek Midya ◽  
Jayasree Chakraborty ◽  
Wasim Arif
Keyword(s):  
Local Binary Pattern ◽  
Texture Features ◽  
Support Vector ◽  
Stepwise Logistic Regression ◽  
Local Ternary Pattern ◽  
Multi Resolution Analysis ◽  
Logistic Regression Method ◽  
Resolution Analysis ◽  
Optimal Set

In this paper, multi-resolution analysis of two edge-texture based descriptors, Discriminative Robust Local Binary Pattern (DRlbp) and Discriminative Robust Local Ternary Pattern (DRltp), are proposed for the determination of mammographic masses as benign or malignant. As an extension of Local Binary Pattern (LBP) and Local Ternary Pattern (LTP), DRlbp and LTP-based features overcome the drawbacks of these features preserving the edge information along with texture. With the hypothesis that multi-resolution analysis of these features for different regions related to mammaographic masses with wavelet transform will capture more discriminating patterns and thus can help in characterizing masses. In order to evaluate the efficiency of the proposed approach, several experiments are carried out using the mini-MIAS database where a 5-fold cross validation technique is incorporated with Support Vector Machine (SVM) on the optimal set of features obtained via stepwise logistic regression method. An area under the receiver operating characteristic (ROC) curve ([Formula: see text] value) of 0.96 is achieved with DRlbp attributes as the best performance. The superiority of the proposed scheme is established by comparing the obtained results with recently developed other competing schemes.

scholarly journals Genetic Algorithms Based Reference Signal Determination for Temperature Control of Residential Buildings

2018 ◽  
Vol 8 (11) ◽  
pp. 2129 ◽  
Author(s):  
Domenico Gorni ◽  
Antonio Visioli
Keyword(s):  
Genetic Algorithms ◽  
Predictive Control ◽  
Residential Buildings ◽  
Reference Signal ◽  
Residential Building ◽  
Optimization Procedure ◽  
Software Tool ◽  
User Requirements ◽  
Optimal Set

This paper deals with the use of genetic algorithms for the determination of the optimal set-point signals for the control of the temperature in a residential building for which the use of the rooms, that is, the user requirements, are different throughout the day. In particular, the optimization procedure aims at minimizing the overall energy consumption by satisfying, at the same time, the comfort constraints set by the user. Both the case of radiators and fan-coil units are considered. The presence of unoccupied rooms is also addressed. Finally, a comparison between this approach and a Model Predictive Control based one is presented. Simulation results obtained by using TRNSYS software tool demonstrate the effectiveness of the method.

scholarly journals The Choice of Priority Actions Aimed at Ecological Rehabilitation of Standing and Low-flowing Lakes

2017 ◽  
Author(s):  
Keyword(s):  
Water Body ◽  
Calculated Data ◽  
Biogenic Element ◽  
Total Phosphorous ◽  
Internal Sources ◽  
Main Input ◽  
High Degree ◽  
Optimal Set ◽  
Made In

Methods of the choice of priority actions in rehabilitation of standing or lowflowing lakes whose unsatisfactory status is caused by either high degree of euthrophication or pollution with man-caused components or combination of these factors are presented. The methods are to be applied after taking of the decision on the necessity of a specific water body rehabilitation and it enables to calculate the main input flows of pollutants and biogenic material on the basis of field observations and calculated data for the water body and its catchment area; it enables to rate these flows and to determine the optimal set of methods for the water body effective rehabilitation and to forecast its conditions after implementation of these measures. The choice of de-euthrophication actions is based on the assessment of the total phosphorous input flows from external and internal sources to the water body whose limiting biogenic element is phosphorous, with their subsequent rating. The choice of actions connected with the man-caused ingredients impact mitigation is to be made in compliance with the same principle. Methods of determination of the total phosphorous or man-caused pollutants inflows to a water body from external and internal sources have been proposed. An example of the rehabilitation measures choice for euthrophic standing lake and low-flowing reservoir with low trophic status but actively being polluted with man-caused ingredients is presented.

The determination of the total atmospheric water vapor content over the oceans using the MTVZA-GY microwave radiometer measurements

2020 ◽  
pp. 83-98
Author(s):  
Анжелика Андреевна Косторная ◽  
Алексей Николаевич Рублев ◽  
Владимир Викторович Голомолзин
Keyword(s):  
Water Vapor ◽  
Approximation Error ◽  
Water Vapor Content ◽  
Atmospheric Water Vapor ◽  
Microwave Range ◽  
Adaptive Search ◽  
Atmospheric Water ◽  
Water Vapor Absorption ◽  
Optimal Set

Представлена методика определения интегрального влагосодержания в безоблачной атмосфере над океанскими и морскими акваториями по измерениям микроволнового радиометра МТВЗА-ГЯ, устанавливаемого на российских гидрометеорологических спутниках серии “Метеор-М”. Определение влагосодержания осуществляется с помощью регрессий, предикторами которых являются измеренные интенсивности излучения в выбранных каналах радиометра. В их число могут входить каналы с рабочими спектральными диапазонами внутри и вне полос поглощения водяного пара. Адаптивный поиск оптимального набора каналов для различных районов земного шара проводится в зависимости от типа поверхности и климатической зоны. Критерием выбора каналов и вида регрессии является минимальная среднеквадратичная невязка получаемых оценок влагосодержания атмосферы с контрольными значениями, рассчитанными по данным реанализа Национального центра экологического прогнозирования (NCEP) и специальных атмосферных моделей, разработанных в Европейском центре среднесрочных прогнозов погоды (ECMWF) The determination of the total atmospheric water vapor content over the cloudless ocean using the MTVZA-GY measurements in microwave range is described. The microwave scanning radiometer MTVZA-GY is located on the Russian meteorological satellites “Meteor-M” and outgoing radiation of the surface-atmosphere system is measured in 29 channels. To calculate the integrated water vapor, the adaptive searching of the optimal set of channels using regression analysis was proposed. Frequencies that are not related to water-vapor absorption lines are used as predictors. The minimum of total approximation error was obtained for selected channels and corresponding regression coefficients values. The quality control of retrieval integrated water vapor (kg/m) was conducted with the help of the set of atmospheric profiles obtained by M. Matricardi and NCEP/NCAR Reanalysis as a priori data using the proposed method. Standard deviations (RMS) obtained by determined adaptive search for the predictors are about 3 kg/m2. Application of the method for cloudless water areas allowed finding a set of 6 channels MTVZA GY (18.7H, 23.8V, 23.8H, 57+0.32+0.025H, 57+0.32+0.01H и 183+1.4V) for which the RMS values are minimal - 4.4 kg/m. The use of all channels of the device in the search allows reducing the error in determining the integrated water vapor content. The proposed method for recovering the content of water vapor from measurements in the channels of the MTVZA-GYa device allows an adaptive search for an optimal set of channels for different regions of the globe and find the best combinations for various climatic zones and surface types

scholarly journals The Hadamard conjecture and integer lattices

1987 ◽  
Vol 43 (2) ◽  
pp. 257-267
Author(s):  
J. McCall ◽  
C. H. C. Little
Keyword(s):  
Integer Lattice ◽  
Lattice Points ◽  
Integer Lattices ◽  
Optimal Set

AbstractLet L be an integer lattice, and S a set of lattice points in L. We say that S is optimal if it minimises the number of rectangular sublattices of L (including degenerate ones) which contain an even number of points in S. We show that the resolution of the Hadamard conjecture is equivalent to the determination of |S| for an optimal set S in a (4s-1) × (4s-1) integer lattice L. We then specialise to the case of 1 × n integer lattices, characterising and enumerating their optimal sets.

scholarly journals Constraint-Aided Product Design

10.14311/702 ◽  
2005 ◽  
Vol 45 (3) ◽  
Author(s):  
G. Mullineux ◽  
B. Hicks ◽  
T. Medland
Keyword(s):  
Product Design ◽  
Design Constraints ◽  
Product Families ◽  
Constrained Problem ◽  
Alternative Approach ◽  
Modelling Environment ◽  
Design Requirements ◽  
Difficult Challenge ◽  
Design Ideas

The importance of supporting the early stages of design is widely accepted. In particular, the development of supportive tools and methods for modelling and analysis of evolving design solutions present a difficult challenge. One reason for this is the need to model both the product design and the design knowledge from which the design is created. There are a number of limitations with many existing techniques and an alternative approach that deals with the design constraints themselves is presented. Dealing directly with the constraints affords a more generalised approach that represents the process by which a product is designed. This enables modelling and reasoning about a product from an often abstract and evolving set of requirements. The constraint methodology is an iterative process where the design requirements are elaborated, the constraint rules altered, design ideas generated and tested as functional structures. The incorporation of direct search techniques to solve the constrained problem enables different solutions to be explored and allows the determination of ‘best compromises’ for related constraints. A constraint modelling environment is discussed and two example cases are used to demonstrate the potential of a constraint-aided approach for supporting important issues such as the design of product variants and product families. 

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