scholarly journals Optimizing Two-Stage Modular Wastewater Plant Expansions Using Numerical Methods and Simulation in A Real Options Context

Author(s):  
Y. Lawryshyn ◽  
◽  
B. Zhang ◽  
M. Davison ◽  
◽  
...  
Energies ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1711 ◽  
Author(s):  
Herui Cui ◽  
Tian Zhao ◽  
Ruirui Wu

2018 ◽  
Vol 1 (3) ◽  
pp. 29 ◽  
Author(s):  
Hussein ALKasasbeh ◽  
Irina Perfilieva ◽  
Muhammad Ahmad ◽  
Zainor Yahya

In this paper, new approximation methods for solving systems of ordinary differential equations (SODEs) by fuzzy transform (FzT) are introduced and discussed. In particular, we propose two modified numerical schemes to solve SODEs where the technique of FzT is combined with one-stage and two-stage numerical methods. Moreover, the error analysis of the new approximation methods is discussed. Finally, numerical examples of the proposed approach are confirmed, and applications are presented.


Author(s):  
Qing Cao ◽  
Karyl B. Leggio

This chapter will stress MIS’ strides in R&D outsourcing, and it will also detail the risks and uncertainty associated with the process of outsourcing core areas of the business such as R&D. Moreover, the chapter will propose the use of real option analysis to assist in the decisions of: “Why should a firm outsource R&D?” and “How does a company select a viable vendor using a two-stage process?” The purposes of this chapter include: a discussion of the cutting edge usage of outsourcing for R&D; and, to alleviate the R&D outsourcing risks, we will explore the two-stage vendor selection approach in information technology outsourcing using real options analysis.


2018 ◽  
Vol 1 (12) ◽  
pp. 164-167
Author(s):  
Viktoriya Filanovich ◽  
Elena Aleksandrova

The features of distributed solutions are determined. Direct and inverse methods are considered. A two-stage method for selecting investment projects, a product description that implements the method, is proposed.


1969 ◽  
Vol 15 (2) ◽  
pp. 141-158 ◽  
Author(s):  
G. W. Skyring ◽  
C. Quadling

Binary-encoded descriptions of 85 named cultures (mostly of soil origin) and of 15 unnamed soil isolates were analyzed by a two-stage principal component procedure including the condensation of the data in terms of grouping of tests and of cultures. This procedure also allowed an evaluation of the discriminative importance of the tests used. Nine clusters of cultures were found by use of a centroid clustering procedure in the space defined by the five leading principal component (P.C.) vectors, which collectively accounted for 54% of original variance. The clusters of item-points representing the cultures were plotted in the dimensions defined by the first and second P.C. vectors providing a geometrical model by which their relationships could be visualized. These P.C. vectors could be interpreted in terms of 31 important discriminative tests (many of which were concerned with the utilization of carbon compounds) from the total of 98 tests used. Fifteen clusters of tests were found as a result of Adansonian R analysis, and 37 clusters of cultures found by means of Adansonian Q analysis. The groupings of the isolates by the Q analysis and the P.C. analysis were compatible although there was some geometrical distortion. To supplement personal decisions on the acceptability of automatically derived clusterings, additional analyses were performed to investigate the homogeneity, relative sizes, and spatial relationships of the clusters of organisms found. In general, results of taxonomic interest were concordant with those of other workers, especially in respect of the genera Arthrobacter, Rhizobium, and Pseudomonas. It was concluded that the bacteriological and the numerical methods used would be appropriate for comparative study of heterotrophic bacterial populations from rhizosphere and corresponding soil environments.


2009 ◽  
Vol 14 (1) ◽  
pp. 51-66 ◽  
Author(s):  
S. D. FLÅM ◽  
Y. M. ERMOLIEV

ABSTRACTThis paper explores a few cooperative aspects of investments in uncertain, real options. By hypothesis some production commitments, factors, or quotas are transferable. Cases in point include energy supply, emission of pollutants, and harvest of renewable resources. Of particular interest are technologies or projects that provide anti-correlated returns. Any such project stabilizes the aggregate proceeds. Therefore, given widespread risk aversion, a project of this sort merits a bonus. The setting is formalized as a two-stage, stochastic, production game. Absent economies of scale, such games are quite tractable in analysis, computation, and realization. A core imputation comes in terms of shadow prices that equilibrate competitive, endogenous markets. Such prices emerge as optimal dual solutions to coordinated production programs, featuring pooled commitments, or resources. Alternatively, the prices could result from repeated exchange.


Author(s):  
Sengshiu Chung ◽  
Peggy Cebe

We are studying the crystallization and annealing behavior of high performance polymers, like poly(p-pheny1ene sulfide) PPS, and poly-(etheretherketone), PEEK. Our purpose is to determine whether PPS, which is similar in many ways to PEEK, undergoes reorganization during annealing. In an effort to address the issue of reorganization, we are studying solution grown single crystals of PPS as model materials.Observation of solution grown PPS crystals has been reported. Even from dilute solution, embrionic spherulites and aggregates were formed. We observe that these morphologies result when solutions containing uncrystallized polymer are cooled. To obtain samples of uniform single crystals, we have used two-stage self seeding and solution replacement techniques.


2007 ◽  
Vol 177 (4S) ◽  
pp. 121-121
Author(s):  
Antonio Dessanti ◽  
Diego Falchetti ◽  
Marco Iannuccelli ◽  
Susanna Milianti ◽  
Gian P. Strusi ◽  
...  
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