This article elaborates on the possible interrelations between the technical and institutional coordination of infrastructures. There is indeed a need for coherence between both in order to safeguard ...a satisfactory functioning in terms of economic performance, guarantee of public values and technical system integrity. It is argued that the ongoing discussion on the liberalization of various infrastructures focuses very much on institutional changes, including market restructuring towards competition and privatization. The technical repercussions of these institutional changes are often neglected. On the other hand, technological change might also have very fundamental consequences for organizations and institutions. Building on the idea of a co-evolution between institutions and technologies, we define very simplified technical and institutional coordination mechanisms. By comparing both, we are able to determine their coherence and relate this to infrastructure performance. In this way, we provide a novel attempt to relate institutional arrangements to the technical network-specificities of infrastructures. This offers a different perspective on the organization of these sectors and a new explanation of their performance. We illustrate our arguments by way of cases from the electricity and air transport sectors. Implications for theory and policy conclude this article.
Measurements of bottomonium production in heavy-ion and p + p collisions at the Relativistic Heavy Ion Collider (RHIC) are presented. The inclusive yield of the three states, (1S + 2S + 3S), was ...measured in the PHENIX experiment via electron-positron decay pairs at midrapidity for Au + Au and p + p collisions at root sNN = 200 GeV. The (1S + 2S + 3S) -> e(+)e(-) differential cross section at midrapidity was found to be B(ee)d sigma/dy = 108 +/- 38 (stat) +/- 15 (syst) +/- 11 (luminosity) pb in p + p collisions. The nuclear modification factor in the 30% most central Au + Au collisions indicates a suppression of the total. state yield relative to the extrapolation from p + p collision data. The suppression is consistent with measurements made by STAR at RHIC and at higher energies by the CMS experiment at the Large Hadron Collider.
The replacement of any anatomic structure by artificial means remains a challenge. This is particularly true in the facial area. The replacement must be one which blends with the adjacent tissues as ...well as replaces the missing structures. Careful planning and meticulous attention to detail in fabrication of a prosthesis can enable the maxillofacial prosthodontist to make a major contribution in the rehabilitation of the patient with an orbital defect.
The objective of this article is to present a benchmarking of financial indicators implemented in hydroelectric stochastic risk management models. We present three model formulations using a tree ...approach for hydroelectric optimization using three procedures for financial risk control: minimum revenues (Rmin), value-at-risk (VaR) and conditional VaR (CVaR). According to their properties and their formulation in each model we compare them theoretically based on two criteria: their adequacy for electricity portfolio optimization subject to risk constraints and the feasibility of their implementation inside the state of the art (SDDP) algorithm appropriate for large scale energy systems. Using numerical examples we verify the statements derived from the theoretical comparison.
Preprosthetic surgery Hochstedler, J L; Finger, I M
General dentistry,
1998 Nov-Dec, Volume:
46, Issue:
6
Journal Article
Peer reviewed
Patients who require complete and removable partial dentures may find the adaptation process quicker and easier after certain pre-prosthetic surgical procedures. Incorporating selected surgical ...procedures into a treatment plan for removable dentures could be the determining factor between success and failure of the prosthesis. The rationale in pre-prosthetic surgery is to provide the patient an adequate restoration to function with a minimum of surgical morbidity. This article describes various procedures and considerations for their use.
PDF
