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We formulate a dynamic facility location model for a …rm locating on a discrete network. It is assumed that this locating …rm will act as the leader …rm in an industry characterized by Stackelberg leader-follower competition. The …rm's I competitors are assumed to act as Cournot …rms and are each assumed to operate under the assumption of zero conjectural(More)
Information gathering is the most important and often the most difficult phase of dynamic system model building. Many methods have been proposed to elicit knowledge from systems experts. Most modelers avoid the social and political barriers found in group elicitation and have focused on various interviewing techniques. If properly employed, group(More)
Poly-L-aspartic acid (PLAsp), a biopolymer, and a similar synthetic polymer, poly-acrylic acid (PAA), each consisting of approximately 50 repeating Asp and acrylic acid monomers, respectively, were immobilized onto controlled pore glass (CPG) and evaluated for use as metal ion-exchange materials. Both polymers achieve metal complexation primarily through(More)
(IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other(More)
We propose a profit maximization model for the decision support system of a firm that wishes to establish or rationalize a multinational manufacturing and distribution network to produce and deliver finished goods from sources to consumers. The model simultaneously evaluates all traditional location factors in a manufacturing and distribution network design(More)
Near-field scanning optical microscopy and tapping mode, liquid cell atomic force microscopy were used to study the conformational changes in simple short-chain silica-immobilized biopolymer, poly(L-cysteine) (PLCys), as the polymer was exposed to reducing, metal-rich, and acidic environments, respectively, to simulate on-line metal preconcentration. In a(More)
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