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Journal articles on the topic 'Technical constraint'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Nwokedi, Theophilus C., Donald I. Kalu, Callistus C. Igboanusi, Gbasibo L. Addah, and C. U. Odumodu. "Constraint Theory Approach Analysis of the Nigerian Shipbuilding Industry." LOGI – Scientific Journal on Transport and Logistics 10, no. 1 (2019): 50–61. http://dx.doi.org/10.2478/logi-2019-0006.

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Abstract Nigeria has been unable to develop a viable ship building industry over the years notwithstanding several efforts of government at achieving that. The study aimed to identify and determine the principal component constraints to ship building development in Nigeria. Adopting the theory of constraint approach, survey research design was used in which primary data were obtained from questionnaire responses from employees and management staff of shipyards in the ship building clusters in Lagos, Port-Harcourt and Warri. The data collected were analyzed using principal component factor anal

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Schaefer, Vanessa, João Paulo Augusto Eça, Marcelo Botelho da Costa Moraes, and Amaury José Rezende. "Do financial constraints impact the technical efficiency of agricultural cooperatives? evidence from Brazil." Enfoque: Reflexão Contábil 40, no. 3 (2021): 79–95. http://dx.doi.org/10.4025/enfoque.v40i3.51484.

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Agricultural cooperatives have the main goals of meeting the economic, social and cultural needs of their members. Although they do not seek profits, they must be competitive since they compete with other cooperatives and companies in the market. In this sense, the search for technical efficiency to give cooperatives a better market position contrasts with the difficulty these organizations face in obtaining foreign capital to enable greater investments. There is little empirical evidence, however, of the relationship between financial constraints and technical efficiency in these organization

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Hong, Yu, Jia Lin Guan, and Hong Wei Su. "Does Energy Constraint Facilitate the Japanese Technical Change?" Advanced Materials Research 664 (February 2013): 1166–70. http://dx.doi.org/10.4028/www.scientific.net/amr.664.1166.

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This study challenges the traditional wisdom that soaring energy prices exert negative effects upon economic growth. For an industrialized country with very tight energy supply constraints, increasing energy costs may drive the firms to seek for technical change and innovation to compete internationally. Using the Japanese monthly data ranging from 1975 to 2010, this study tests for the assumption of endogenous cost-driven technical change. We identify a long-run equilibrium co-integrating relationship among the Japanese industrial production, energy prices, export volumes and export prices. A

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STUMPTNER, MARKUS, GERHARD E. FRIEDRICH, and ALOIS HASELBÖCK. "Generative constraint-based configuration of large technical systems." Artificial Intelligence for Engineering Design, Analysis and Manufacturing 12, no. 4 (1998): 307–20. http://dx.doi.org/10.1017/s0890060498124046.

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This paper describes the technical principles and representation behind the constraint-based, automated configurator COCOS. Traditionally, representation methods for technical configuration have focused either on reasoning about structure of systems or quantity of components, which is not satisfactory in many target areas that need both. Starting from general requirements on configuration systems, we have developed an extension of the standard CSP model. The constraint-based approach allows a simple system architecture, and a declarative description of the different types of configuration know

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OSTROWSKI, MAX, and TORSTEN SCHAUB. "ASP modulo CSP: The clingcon system." Theory and Practice of Logic Programming 12, no. 4-5 (2012): 485–503. http://dx.doi.org/10.1017/s1471068412000142.

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AbstractWe present the hybrid ASP solver clingcon, combining the simple modeling language and the high performance Boolean solving capacities of Answer Set Programming (ASP) with techniques for using non-Boolean constraints from the area of Constraint Programming (CP). The new clingcon system features an extended syntax supporting global constraints and optimize statements for constraint variables. The major technical innovation improves the interaction between ASP and CP solver through elaborated learning techniques based on irreducible inconsistent sets. A broad empirical evaluation shows th

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Tang, J., and Q. Zhuang. "Technical Note: Propagating correlations in atmospheric inversions using different Kalman update smoothers." Atmospheric Chemistry and Physics 11, no. 3 (2011): 921–29. http://dx.doi.org/10.5194/acp-11-921-2011.

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Abstract. The scheme to propagate correlations between on-line and off-line state variables in atmospheric inversions using the fixed-lag Kalman smoother proposed in Bruhwiler et al. (2005) is explained as a process to impose a balanced constraint on the on-line state variables. It is then extended to the fixed-lag ensemble square root Kalman smoother and fixed-lag square root sigma-point Kalman smoother, allowing us to treat nonlinear observation operators easily. Further, to constrain the posterior fluxes within their feasible ranges, the constrained fixed-lag Kalman smoother is presented an

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Kehinde, Ayodeji Damilola, and Muyiwa Sunday Olatidoye. "Credit Constraint and Technical Efficiency of Smallholder Cassava Farmers in Osun State, Nigeria." Agricultura 16, no. 1-2 (2019): 27–33. http://dx.doi.org/10.18690/agricultura.16.1-2.27-33.2019.

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This study investigated the effect of credit constraint on technical efficiency of smallholder cassava farmers in Osun State, Nigeria. A structured questionnaire was used to collect primary data from 200 smallholder cassava farmers using a multi-stage sampling procedure. Data collected were analysed using descriptive statistics and stochastic frontier model. Results from the descriptive statistics showed that majority (81%) of the cassava farmers were male with the mean age of 44.1 (±14.9) years. About 86% of the respondents were married with mean household size of 6.9 (±3.5) persons. The resu

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Mayer, Wolfgang, Markus Stumptner, Peter Killisperger, and Georg Grossmann. "A declarative framework for work process configuration." Artificial Intelligence for Engineering Design, Analysis and Manufacturing 25, no. 2 (2011): 143–62. http://dx.doi.org/10.1017/s0890060410000594.

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AbstractThis article describes the technical principles and representation of a constraint-based configuration method for work processes. Methods developed for the configuration of modular systems comprising components have traditionally adopted a representation where the properties and compatibility requirements are expressed as constraints associated with individual components. However, this representation does not accurately capture constraints on paths and subprocesses and is therefore unsuitable for process configuration. This article extends established constraint-based configuration met

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DOS SANTOS PAULINO, VICTOR, and MICHEL CALLOIS. "INNOVATION AND RELIABILITY STRATEGIES IN THE DEFENSE, SPACE AND SEMICONDUCTOR INDUSTRIES: A COMPARATIVE ANALYSIS." International Journal of Innovation Management 14, no. 05 (2010): 795–821. http://dx.doi.org/10.1142/s136391961000288x.

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The objective of this paper is to understand why the pace of technical change has been slower in the defense and space industries than in semiconductors. To answer this question, we adopt an inductive method that exploits historical facts and patent statistics to provide empirical data. Basing our rationale on the appropriation and structural inertia arguments, we show that the constraints imposed by reliability in the defense and space industries impedes the appropriation of supra profits from innovation and thus slows the pace of technical change. The main managerial implication of this resu

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Rosso, Marco M., Raffaele Cucuzza, Fabio Di Trapani, and Giuseppe C. Marano. "Nonpenalty Machine Learning Constraint Handling Using PSO-SVM for Structural Optimization." Advances in Civil Engineering 2021 (February 15, 2021): 1–17. http://dx.doi.org/10.1155/2021/6617750.

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Firstly formulated to solve unconstrained optimization problems, the common way to solve constrained ones with the metaheuristic particle swarm optimization algorithm (PSO) is represented by adopting some penalty functions. In this paper, a new nonpenalty-based constraint handling approach for PSO is implemented, adopting a supervised classification machine learning method, the support vector machine (SVM). Because of its generality, constraint handling with SVM appears more adaptive both to nonlinear and discontinuous boundary. To preserve the feasibility of the population, a simple bisection

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Müller, Andreas. "Implementation of A Geometric Constraint Regularization For Multibody System Models." Archive of Mechanical Engineering 61, no. 2 (2014): 365–83. http://dx.doi.org/10.2478/meceng-2014-0021.

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Abstract Redundant constraints in MBS models severely deteriorate the computational performance and accuracy of any numerical MBS dynamics simulation method. Classically this problem has been addressed by means of numerical decompositions of the constraint Jacobian within numerical integration steps. Such decompositions are computationally expensive. In this paper an elimination method is discussed that only requires a single numerical decomposition within the model preprocessing step rather than during the time integration. It is based on the determination of motion spaces making use of Lie g

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Kumar, Manoj, S. N. Ojha, Arpita Sharma, and Raushan Kumar. "A study on constraints in adoption of scientific aquaculture practices." Journal of Applied and Natural Science 6, no. 2 (2014): 696–700. http://dx.doi.org/10.31018/jans.v6i2.520.

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A study was undertaken to ascertain constraints faced by fish farmers in adoption of scientific aquaculture practices in East Champaran and West Champaran districts of Bihar. Information from 144 respondents was collected and analysed by calculating the Rank Based Quotient (RBQ) values. RBQ value for constraint faced by farmers were extreme climatic conditions (84.03), less extension programs and technical support (78.47), lack of contact with extension personnel’s (71.33), lack of awareness about scientific culture practices (65.28), inadequate credit facility (60.42), labour scarcity (57.64)

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Valko, Irina. "The Power of the Capability Constraint: On Russia’s Strength in the Arctic Territorial Dispute." Politics in Central Europe 12, no. 1 (2016): 167–89. http://dx.doi.org/10.1515/pce-2016-0009.

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Abstract Based on a geographical-administrative definition of the region, the theoretical assumptions of contemporary French structuralist geopolitics, cross-sectional data for 1990, 1995, 2000, 2005 and 2010 from the Updated Arctic Regional Attributes Dataset, and the technical capabilities of MS Office Excel 2010, this research (a) reveals and contrasts the Arctic states’ capability constraints deriving from their longitudinal material and virtual power potential (physical potential, socio-economic potential, military potential, and symbolic potential); and (b) analyses the role of this cons

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Sauvey, Christophe, Wajdi Trabelsi, and Nathalie Sauer. "Mathematical Model and Evaluation Function for Conflict-Free Warranted Makespan Minimization of Mixed Blocking Constraint Job-Shop Problems." Mathematics 8, no. 1 (2020): 121. http://dx.doi.org/10.3390/math8010121.

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In this paper, we consider a job-shop scheduling problem with mixed blocking constraints. Contrary to most previous studies, where no blocking or only one type of blocking constraint was used among successive operations, we assume that, generally, we may address several different blocking constraints in the same scheduling problem depending on the intermediate storage among machines, the characteristics of the machines, the technical constraints, and even the jobs. Our objective was to schedule a set of jobs to minimize the makespan. Thus, we propose, for the first time, a mathematical model o

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YETKİN KARAKOÇ, Nihal. "Text Reduction as a Technical Constraint in Subtitling versus Humor Translation." Modern Türklük Araştırmaları Dergisi /Journal of Modern Turkish Studies 10, no. 4 (2014): 177–87. http://dx.doi.org/10.1501/mtad.10.2013.4.49.

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DIOP, Lamine. "TECHNICAL AND ECONOMIC FEASIBILITY OF SOLAR IRRIGATION PUMPING SYSTEM: A REVIEW." Knowledge-Based Engineering and Sciences 1, no. 01 (2020): 1–22. http://dx.doi.org/10.51526/kbes.2020.1.01.1-22.

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Climate change has become a major constraint to the development of rain-fed agriculture due to the decline of rainfall. Therefore, irrigated agriculture is an alternative allowing farmers to have more access to water in order to meet crop water requirements. However, irrigated agriculture faces a major constraint related to the accessibility of energy sources used in pumping water. In general, the most common energy sources used in pumping water for irrigation are fuel and electricity. Nevertheless, they are very expensive, are not always accessible particularly in rural areas in Africa and ha

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Shehrawat, P. S., Rati Mukteshawar, and Nora Abu Baker Saeed. "Study of constraints analysis in organic farming cultivation in Sonipat and Hisar district of Haryana state, India." Journal of Applied and Natural Science 8, no. 1 (2016): 100–106. http://dx.doi.org/10.31018/jans.v8i1.756.

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The present study was undertaken in two purposively selected districts, namely Sonipat and Hisar of Haryana state and a total no. of one hundred twenty farmers were selected and interviewed to study the prospects of organic farming and to assess the constraints in adoption of organic farming. The finding regarding farmersâ€™ per-ception about input constraints in adoption of organic farming show that lack of knowledge and demand of bio pesticides (90.8%) was ranked first, the results regarding perception about technical constraints in adopting of organic farming reveals that non- availability

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Ren, Huizhi, and Shenshen Sun. "A Hybrid IP/GA Approach to the Parallel Production Lines Scheduling Problem." Discrete Dynamics in Nature and Society 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/5201937.

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A special parallel production lines scheduling problem is studied in this paper. Considering the time window and technical constraints, a mixed integer linear programming (MILP) model is formulated for the problem. A few valid inequalities are deduced and a hybrid mixed integer linear programming/constraint programming (MILP/CP) decomposition strategy is introduced. Based on them, a hybrid integer programming/genetic algorithm (IP/GA) approach is proposed to solve the problem. At last, the numerical experiments demonstrate that the proposed solution approach is effective and efficient.

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Deshevaya, E. A., V. B. Bychkov, M. P. Malakh, V. O. Orlov та E. V. Shubralova. "ОПЫТ ИСПОЛЬЗОВАНИЯ В УСЛОВИЯХ МКС ТЕХНИЧЕСКИХ СРЕДСТВ НАУЧНОЙ АППАРАТУРЫ «БАР». ЧАСТЬ 1. АКУСТИЧЕСКИЕ ПРИБОРЫ". Aerospace and Environmental Medicine 55, № 2 (2021): 90–97. http://dx.doi.org/10.21687/0233-528x-2021-55-2-90-97.

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The paper presents the results of operational testing of two acoustic components of research equipment «Bar» (a leak detector and ultrasound analyzer) onboard the ISS Russian segment. It was found that the ultrasonic (US) background noise interferes in leak search; besides, it exceeds dramatically the adopted noise level constraint thus impacting crew health and efficiency, and oral communication. The narrow-band noise spectra were measured and the expressed tone property of the US noise was demonstrated. The authors make the point that the present noise level constraints for space habitats do

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Wilson, Fiona M., and David A. Buchanan. "The Effect of New Technology in the Engineering Industry: Cases of Control and Constraint." Work, Employment and Society 2, no. 3 (1988): 366–80. http://dx.doi.org/10.1177/0950017088002003006.

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The major concern in this paper is to examine the effect of computer numerical control on skill. The findings from research in three companies demonstrate that in the engineering industry, technical change can have both positive and negative effects on the utilisation of skill, and thus on levels of skill in the industry. The experience of technical change, whether positive or negative, is shared among groups of workers. Technical change potentially poses a threat to turners' skill and so they will defend those common interests in the face of that change.

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Berne, André. "A new approach for reducing diffuse agricultural pollution in water supply ponds." Water Practice and Technology 8, no. 2 (2013): 190–201. http://dx.doi.org/10.2166/wpt.2013.021.

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Preserving the quality of raw water for drinking likely to be affected by diffuse pollution in water supply ponds (WSPs) is a major public health issue. We must therefore implement efficient and sustainable technical measures that guarantee the long-term protection of this resource. Such measures can prove to be a considerable constraint for farm managers and farm owners. It is consequently absolutely necessary that the compensation provided for is in line with these constraints. High stakes and high constraints must result in high compensation. The catchment protection perimeter tool, reviewe

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Tandel, V. B. "Constraints Analysis of Shrimp Farming in the Coastal Belt of South Gujarat." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (2021): 2968–70. http://dx.doi.org/10.22214/ijraset.2021.37036.

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The study examined the constraints analysis of shrimp farming in the coastal belt of South Gujarat. From the South Gujarat region, mainly four districts, namely, Valsad, Navsari, Surat, and Bharuch districts, were selected purposively to study the socio-economic characteristics of shrimp farmers. From each district, two talukas were selected purposively according to the availability of shrimp farmers. After that, two villages from each taluka and from each village, fifteen farmers were selected by simple random sampling (SRS) method. Thus, a total of 240 shrimp farmers were selected for this s

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Rędzioch-Korkuz, Anna. "Problems and Constraints in Translation: A Semiotic Perspective." Między Oryginałem a Przekładem 26, no. 47 (2020): 91–110. http://dx.doi.org/10.12797/moap.26.2020.47.05.

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Constraints are an integral part of translation: in addition to purely linguistic, social and cultural aspects, professionals often have to deal with ideological, technical and ethical problems, which unlocks the potential of semiotics for translation studies. The article presents a working typology of potential constraints operating in translation. It highlights the distinction between translation problems and constraints, with the latter understood as any potential and objective factor which limits the performance of translators, forcing them to apply problem-solving tactics to produce a rel

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ABDERRAHIM, EL ATTAR, EL HACHLOUFI MOSTAFA, and GUENNOUN ZINE EL ABIDINE. "AN INCLUSIVE CRITERION FOR AN OPTIMAL CHOICE OF REINSURANCE." Annals of Financial Economics 12, no. 04 (2017): 1750018. http://dx.doi.org/10.1142/s201049521750018x.

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In this paper, we propose an inclusive model which allows to improve the results obtained in the literature with regard to the criteria set by the insurers such as, maximizing the expected technical benefit under the variance constraint (mean-variance), minimizing the probability of ruin and minimizing risk measures. In this model, we determine the optimal reinsurance treaty parameter that minimizes both the risk and the probability of ruin (by maximizing the Lundberg adjustment coefficient) under the constraint of the technical benefit which must also be maximal, based on the conditional tail

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Bartnik, Grzegorz, Andrzej Marciniak, and Krzysztof Gołacki. "Application of CLP for technical objects construction with an exemplary bucket elevation." ITM Web of Conferences 21 (2018): 00003. http://dx.doi.org/10.1051/itmconf/20182100003.

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The paper presents the application of the Constraint Logic Programming (CLP) language for designing technical objects. The method was described and illustrated based with the help of on the bucket elevator design. The hierarchical structure of the object, way of system configuration and exemplary sets of fitted components are presented.

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Dai, Zhifeng, Xiaodi Dong, Jie Kang, and Lianying Hong. "Forecasting stock market returns: New technical indicators and two-step economic constraint method." North American Journal of Economics and Finance 53 (July 2020): 101216. http://dx.doi.org/10.1016/j.najef.2020.101216.

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Hao, Yan E., and Yong Qiang Lan. "Technical Analysis of Optimal Design for Building Structure Considering Cost Constraint of Project." Applied Mechanics and Materials 496-500 (January 2014): 2563–68. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.2563.

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Cost of building structure takes a large proportion of total construction investment. Investors also come to realize that different structural designs affect project cost, which means the higher demand for structural design institutes, because it requires structural designers to work out safe, suitable, perdurable and economic structural design by either meeting current design codes, or considering structure cost constraints and architectural design scheme. One way of controlling the structural engineering cost is to optimize the structural design. This article analyzes the factors which affec

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Xin, TIAN, HAN Xinyang, JIN Xiaoling, and QI Shixiong. "Research on power grid technical reform planning model based on overall cost constraint." IOP Conference Series: Earth and Environmental Science 461 (April 24, 2020): 012045. http://dx.doi.org/10.1088/1755-1315/461/1/012045.

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Abdelghany, Mohammed, Zakaria Yahia, and Amr B. Eltawil. "A new two-stage variable neighborhood search algorithm for the nurse rostering problem." RAIRO - Operations Research 55, no. 2 (2021): 673–87. http://dx.doi.org/10.1051/ro/2021027.

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The nurse rostering problem refers to the assignment of nurses to daily shifts according to the required demand of each shift and day, with consideration for the operational requirements and nurses’ preferences. This problem is known to be an NP-hard problem, difficult to be solved using the known exact solution methods especially for large size instances. Mostly, this problem is modeled with soft and hard constraint, and the objective is set to minimize the violations for the soft constraints. In this paper, a new two-stage variable neighborhood search algorithm is proposed for solving the nu

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Robinson, Reagan N., and Anthony N. Taneh. "DIGITAL ILLITERACY: A CONSTRAINT TO TECHNOLOGY EDUCATION ADVANCEMENT IN SOUTH-SOUTH REGION OF NIGERIA." International Journal of Research -GRANTHAALAYAH 6, no. 11 (2018): 307–14. http://dx.doi.org/10.29121/granthaalayah.v6.i11.2018.1132.

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Technology education is one the programmes designed to provide technical knowledge and skills necessary for economic development in Nigeria. But technology education programme has a constraint to its advancement which this study investigated. The study adopted the survey research method for the design. The population of the study was 453 persons comprised of 379 students and 74 technical teachers from one Technical College and a University with technology education department in each of the 6 states of the South-South geo-political zone. A simple random sampling technique was used to obtain a

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El Attar, Abderrahim, Mostafa El Hachloufi, and Zine El Abidine Guennoun. "Optimal Reinsurance through Minimizing New Risk Measures under Technical Benefit Constraints." International Journal of Engineering Research in Africa 35 (March 2018): 24–37. http://dx.doi.org/10.4028/www.scientific.net/jera.35.24.

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In this paper we present an approach to minimize the actuarial risk for the optimal choice of a form of reinsurance, and this is intended to be through a choice of treated parameters that minimize the risk using the Conditional Tail Expectation and the Conditional Tail Variance risk measures. The minimization procedure is based on the Augmented Lagrangian and a genetic algorithm with technical benefit as a constraint. This approach can be seen as a decision support tool that can be used by managers to minimize the actuarial risk in the insurance company.

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Malinowski, Leszek. "Influence of chosen technical constraints on stability of 3D geological model-based schedule in a complex longwall operation." E3S Web of Conferences 123 (2019): 01024. http://dx.doi.org/10.1051/e3sconf/201912301024.

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In Polish underground mining digital 3D geological models and mine structure models are becoming popular as an aid in creating design and schedules of mine workings. Article highlights development made in generating and optimizing mining operations. Having created a model it is possible to test schedule scenarios using a number of constraints. One of the constraint limiting coalmines is ventilation, which may be magnified by high content of methane in coal deposits. In this article two methods of introducing ventilation constraints have been presented. One limits number of longwall shearers wo

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Wang, Yu Xia. "Single Spur Gear Reducer Optimization Design Mathematical Modeling." Applied Mechanics and Materials 273 (January 2013): 198–202. http://dx.doi.org/10.4028/www.scientific.net/amm.273.198.

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In a given power P, number of teeth than u, input speed and other technical conditions and requirements, find out a set of used a economic and technical indexes reach the optimal design parameters, realize the optimization design of the reducer, This paper determined unipolar standard spur gear reducer design optimization of the design variables, and then determine the objective function, determining constraint function, so as to establish the mathematical model.

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Patwardhan, Meenal B., Antonio Sarría-Santamera, and David B. Matchar. "Improving the process of developing technical reports for health care decision-makers: Using the Theory of Constraints in the Evidence-Based Practice Centers." International Journal of Technology Assessment in Health Care 22, no. 1 (2006): 26–32. http://dx.doi.org/10.1017/s026646230605080x.

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Objectives:To apply the Theory of Constraints (TOC) to the Evidence-based Practice Center (EPC) process.Methods:Participants in the EPC process were interviewed, and the technical contracting literature was reviewed. Undesirable effects (UDEs) that might occur in the EPC process were identified and, in a TOC Current Reality Tree (CRT), a fundamental UDE was selected and tracked back to potential root causes, focusing on the core “constraint.” The resulting draft CRT was presented at an EPC directors' meeting and finalized. From possible solutions obtained from interviews and literature, a Futu

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Mirzakhanova, Aida, Muhammad Khalil, Natalya Galaeva, and Ruben Kazaryan. "Organizational and technological solutions of multicriteria quality analysis in high-rise construction." E3S Web of Conferences 164 (2020): 08011. http://dx.doi.org/10.1051/e3sconf/202016408011.

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Features of renovation of built-up areas are considered. The main difficulties in carrying out the renovation process are identified. The concept of the constraint factor of the building is defined. Methods. A method for analyzing and assessing constraints for selecting optimal organizational and technical solutions for the renovation of territories is proposed. Results. An analysis algorithm is proposed, based on the consideration of the constraint factor as an array of actions of individual “objects of influence” on the corresponding “subjects of influence”. Conclusion. Сonducting such an an

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NEUMANN, KLAUS, MATTHIAS ROLF, and JOCHEN JAKOB STEIL. "RELIABLE INTEGRATION OF CONTINUOUS CONSTRAINTS INTO EXTREME LEARNING MACHINES." International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems 21, supp02 (2013): 35–50. http://dx.doi.org/10.1142/s021848851340014x.

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The application of machine learning methods in the engineering of intelligent technical systems often requires the integration of continuous constraints like positivity, monotonicity, or bounded curvature in the learned function to guarantee a reliable performance. We show that the extreme learning machine is particularly well suited for this task. Constraints involving arbitrary derivatives of the learned function are effectively implemented through quadratic optimization because the learned function is linear in its parameters, and derivatives can be derived analytically. We further provide

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Tesfaye Edjigu, Habtamu. "Firm Growth and Technical Efficiency in Ethiopia: The Role of Firm Size and Finance." International Journal of Economics and Finance 8, no. 10 (2016): 1. http://dx.doi.org/10.5539/ijef.v8n10p1.

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<p>The performance of manufacturing ﬁrms can play a crucial rule in spurring economic growth and international competency. However, it has received little attention in developing countries particularly in Sub-Saharan Africa (SSA). Using ﬁrm level data from 2000 to 2008 survey, this paper empirically investigates the key determinants of growth and technical efficiency of Ethiopian manufacturing establishments focusing on the impact of size and ﬁnance. The empirical result using dynamic panel data estimation suggest that small and young ﬁrms grow more rapidly. Leverage ratio and cash ﬂow a

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Hu, Zhen, and Jing Lei Sun. "Research on the Relationship among Cost Control, Technical Investment and Franchising Period in BOT Projects." Advanced Materials Research 403-408 (November 2011): 5166–71. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.5166.

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Under the double win constraint condition between the public and private party, this paper takes VFM (Value for Money) as the evaluating indicator of the government’s earnings, uses the rate of return on investment as the evaluating indicator of the project company’s earnings in order to analyze the relationship among cost control, technical investment and franchising period. We found that the effective cost control can shorten the franchising period and hardly depend on the technical investment. If the contribution of the technical investment to the reduction of the maintenance cost is compar

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Chang, Su-Chao, and Chi-Min Chou. "The Roles of Constraint-Based and Dedication-Based Influences on User's Continued Online Shopping Behavior." Spanish journal of psychology 15, no. 3 (2012): 1177–200. http://dx.doi.org/10.5209/rev_sjop.2012.v15.n3.39406.

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The objective of this study was to determine empirically the role of constraint-based and dedication-based influences as drivers of the intention to continue using online shopping websites. Constraint-based influences consist of two variables: trust and perceived switching costs. Dedication-based influences consist of three variables: satisfaction, perceived usefulness, and trust. The current results indicate that both constraint-based and dedication-based influences are important drivers of the intention to continue using online shopping websites. The data also shows that trust has the strong

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Wang, Guo Ye, and Juan Li Zhang. "Research on State-Space Mapping Algorithm from the Vehicle Unsteady Constraint Test System to the Independent Vehicle System." Applied Mechanics and Materials 130-134 (October 2011): 326–31. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.326.

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Project the vehicle unsteady constraint test system for testing vehicle ESP control performances safely and efficiently, set up the test system dynamics model. Based on the Matlab/Simulink establish the dynamics simulation system of the vehicle unsteady constraint test system for the Chery A3 car. Using the simulation model, we respectively simulate the stability control performances of the test system and the independent vehicle system on steady-state conditions of under steering and over steering. Research and verify the state-space mapping algorithm from the test system to the independent v

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Chan, Mavis, Cecilia Chun, Holly Fung, Jimmy H. M. Lee, and Peter J. Stuckey. "Teaching Constraint Programming Using Fable-Based Learning." Proceedings of the AAAI Conference on Artificial Intelligence 34, no. 09 (2020): 13366–73. http://dx.doi.org/10.1609/aaai.v34i09.7059.

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The paper presents the pedagogical innovations and experience of the co-development of three MOOCs on the subject of “Modeling and Solving Discrete Optimization Problems” by two universities. In a nutshell, the MOOCs feature the Fable-Based Learning approach, which is a form of problem-based learning encapsulated in a coherent story plot. Each lecture video begins with an animation that tells a story following a novel. The protagonists of the story encounter a problem requiring technical assistance from the two professors from modern time via a magical tablet granted to them by a fairy god. Th

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Karimi Madahi, Seyed Siavash, and Andrija T. Sarić. "Multi-Criteria Optimal Sizing and Allocation of Renewable and Non-Renewable Distributed Generation Resources at 63 kV/20 kV Substations." Energies 13, no. 20 (2020): 5364. http://dx.doi.org/10.3390/en13205364.

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The optimal allocation and sizing of distributed generation (DG) resources are important in installing these resources, to improve the technical parameters of the network, including the power losses, voltage profile, and short-circuit level, as well as to increase economic factors. In this paper, a new multi-criteria algorithm and objective function are proposed for the optimal sizing and allocation of renewable and non-renewable DG resources simultaneously. The proposed algorithm is implemented on 63/20 kV substations at 20 kV levels. In the proposed objective function, all important technica

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Guillon, Delphine, Christophe Merlo, Eric Villeneuve, Elise Vareilles, and Michel Aldanondo. "A Methodology for Implementing a Product-Centred Bid Model for Suppliers." Proceedings of the Design Society: International Conference on Engineering Design 1, no. 1 (2019): 1035–44. http://dx.doi.org/10.1017/dsi.2019.109.

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AbstractEarly phases of product development are critical for next phases and impact the product definition. During bid process, suppliers generate offers for a customer that must both meet customer's requirements and be realizable in terms of technical aspects, costs and due date. Our aim is to propose a methodology for implementing a generic bid model, composed of context parameters, customer's requirements, the product i.e. technical solution, its delivery process, and associated risks. Key Performance Indicators allow to evaluate different solutions. The bid model is exploited with two diff

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Zhang, Ying, Shi Hang Huang, Ying Liu, Zhen Fang, and De Peng Dang. "Study on Automatic Test Paper Generation Algorithm Based on the Maximum Flow of the Upper and Lower Bounds." Advanced Materials Research 756-759 (September 2013): 3065–69. http://dx.doi.org/10.4028/www.scientific.net/amr.756-759.3065.

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The core of exam management system is how to generate test paper automatically. The existing algorithmic is difficult to simultaneously achieve the requirements with efficient, random, flexible and expansive performance. In this paper, we introduce the maximum flow algorithm of the upper and lower bounds in the graph theory, create a test paper generation model based on constraint conditions, and implement the test paper generation under complex constraints. In addition, to illustrate the success rate and efficiency, the system generated automatically test papers on proposition needs. In turn,

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Zhong, Yun, Peiyang Yao, Yu Sun, and Juan Yang. "Cooperative Task Allocation Method of MCAV/UCAV Formation." Mathematical Problems in Engineering 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/6051046.

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Unmanned Combat Aerial Vehicle (UCAV) cooperative task allocation under Manned Combat Aerial Vehicle’s (MCAV) limited control is one of the important problems in UCAV research field. Hereto, we analyze the key technical and tactical indices influence task allocation problem and build an appropriate model to maximize the objective function values as well as reflecting various constraints. A novel improved multigroup ant colony algorithm (IMGACA) is proposed to solve the model; the algorithm mainly includes random sequence-based UCAV selection strategy, constraint-based candidate task generation

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Zhang, Xiurong, Shaoli Kang, and Xueqian Fu. "Optimal Power Allocation for Cooperative Pattern Division Multiple Access Systems." Mathematical Problems in Engineering 2021 (February 26, 2021): 1–10. http://dx.doi.org/10.1155/2021/5581811.

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This study focuses on the power allocation (PA) problem in code division multiple access (PDMA) networks with amplify-and-forward (AF) relays. We provide two wireless communication technical performance indexes, which are system throughput and outage probability. A multiobjective version of particle swarm optimization is proposed to solve Pareto-optimal solutions for optimal PA problems. A novel programming model is built based on improvement of constraint functions, and the accuracy and efficiency of solution can be improved via compact constraints. The technique for order preference by simil

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Erenguc, S. Selcuk, and Harold P. Benson. "Technical Note—On the Weighted Selection Algorithm for Certain Linear Programs with Nested Constraint Coefficients." Operations Research 34, no. 4 (1986): 650–53. http://dx.doi.org/10.1287/opre.34.4.650.

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Cheng, Xiaoqian, Chengming Li, Weibing Du, Jianming Shen, and Zhaoxin Dai. "Trip Extraction of Shared Electric Bikes Based on Multi-Rule-Constrained Homomorphic Linear Clustering Algorithm." ISPRS International Journal of Geo-Information 8, no. 12 (2019): 526. http://dx.doi.org/10.3390/ijgi8120526.

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Trajectory data include rich interactive information of humans. The correct identification of trips is the key to trajectory data mining and its application. A new method, multi-rule-constrained homomorphic linear clustering (MCHLC), is proposed to extract trips from raw trajectory data. From the perspective of the workflow, the MCHLC algorithm consists of three parts. The first part is to form the original sub-trajectory moving/stopping clusters, which are obtained by sequentially clustering trajectory elements of the same motion status. The second part is to determine and revise the motion s

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Raffelsiefen, Renate. "Absolute ill-formedness and other morphophonological effects." Phonology 21, no. 1 (2004): 91–142. http://dx.doi.org/10.1017/s0952675704000144.

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In this paper I explore the theoretical significance of phonologically conditioned gaps in word formation. The data support the original approach to gaps in Optimality Theory proposed by Prince & Smolensky (1993), which crucially involves MPARSE as a ranked and violable constraint. The alternative CONTROL model proposed by Orgun & Sprouse (1999) is found to be inadequate because of lost generalisations and technical flaws. It is shown that a careful distinction between various morphophonological effects (e.g. paradigm uniformity effects, phonological repair and ‘stem selection’) is nec

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GURNANI, ASHWIN, SCOTT FERGUSON, KEMPER LEWIS, and JOSEPH DONNDELINGER. "A constraint-based approach to feasibility assessment in preliminary design." Artificial Intelligence for Engineering Design, Analysis and Manufacturing 20, no. 4 (2006): 351–67. http://dx.doi.org/10.1017/s0890060406060252.

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In this paper, we present the development and application of a technical feasibility model used in preliminary design to determine whether a set of desired product specifications obtained from marketing is feasible in the engineering domain. This model is developed by integrating the capabilities of a multiobjective design problem, a multicriteria design optimization tool, a Pareto frontier gap analyzer, metamodeling methods, and use of the Pareto frontier as a constraint for feasibility assessment. Although the tools are independent of the domain, their application is illustrated using two ex

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