ANALYZING CUSTOMER VALUE USING CONJOINT ANALYSIS: THE EXAMPLE OF A PACKAGING COMPANY

The fulfillment of customers’ wishes in a profitable way requires that companies understand which aspects of their product and service are most valued by the customer. Conjoint analysis is considered to be one of the best methods for achieving this purpose. Conjoint analysis consists of generating and conducting specific experiments among customers with the purpose of modeling their purchasing decision. This article will give an overview of the method and apply it to an Estonian packaging company. As a result of the empirical study the author is able to estimate the value creation models of 34 respondents (customers) both on a group and individual basis.customer value, conjoint analysis, market research methods

Electrostatic hazards during launch vehicle flight operations

Electrostatic hazards during launch vehicle flight operation

First order impulsive solutions

A mathematically rigorous derivation is given of first order corrections to multi-impulse approximations to the solutions to space flight optimization problems with bang-bang control. The rocket was subjected to an inverse square gravitational force and to a thrust force with constant magnitude. The mass decreased linearly with time. An optimal impulsive solution was obtained for a problem with given initial and final conditions. The method was then used to obtain first-order corrections to the initial values of the costate variables. Indications are given on how the theory may be extended to higher order corrections. The theory was applied to intercept and rendezvous problems

Thrust chamber material technology program

This report covers work performed at Pratt & Whitney on development of copper-based materials for long-life, reusable, regeneratively cooled rocket engine thrust chambers. The program approached the goal of enhanced cyclic life through the application of rapid solidification to alloy development, to introduce fine dispersions to strengthen and stabilize the alloys at elevated temperatures. After screening of alloy systems, copper-based alloys containing Cr, Co, Hf, Ag, Ti, and Zr were processed by rapid-solidification atomization in bulk quantities. Those bulk alloys showing the most promise were characterized by tensile testing, thermal conductivity testing, and elevated-temperature, low-cycle fatigue (LFC) testing. Characterization indicated that Cu- 1.1 percent Hf exhibited the greatest potential as an improved-life thrust chamber material, exhibiting LCF life about four times that of NASA-Z. Other alloys (Cu- 0.6 percent Zr, and Cu- 0.6 percent Zr- 1.0 percent Cr) exhibited promise for use in this application, but needed more development work to balance properties

Nonlinear optimal guidance algorithms Interim report

Nonlinear optimal guidance algorithms for space mission

Toimeainepõhiste piirhindade mõju Eesti Haigekassa ravimihüvitiste eelarvele ja ravimitarbijatele

Eesti Arsti aprillikuu numbris analüüsisin toimeainepõhiste piirhindade mõju Eesti Haigekassa ravimihüvitiste eelarvele ja ravimitarbijatele (1). Järgnevalt vaatlen teise Eestis rakendatud ravimikulu kontrolli meetme – hinnakokkulepete – rakendamisega seotud probleeme. Eesti Arst 2004; 83 (6): 384–38

Üleriigiline kampaania passiivse suitsetamise vähendamiseks

Oktoobris 2005 algas haigekassa rahastatav üleriigiline kampaania, mille eesmärgiks on juhtida mittesuitsetajate tähelepanu passiivsest suitsetamisest tingitud terviseriskidele. Samale teemale keskendus ka 10.–17. oktoobrini Eestis toimunud rahvusvaheline vähinädal. Suitsetamine on paljude haiguste, sealhulgas ka vähi otsene riskitegur. WHO andmetel on praegu maailmas 1,3 miljardit suitsetajat ja igal aastal sureb tubakatoodete tarbimise tagajärjel 4,9 miljonit inimest. Võitlus tubakavaba keskkonna eest on oluline teema kogu maailmas. Eesti Arst 2005; 84 (11): 791–79