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Incorporating consumer resistance to innovation in a new product diffusion model: A new model and a simulation comparison with existing models
No full textThis dissertation proposes a new diffusion model for an innovation in durable goods markets and compares the model with four existing models. The distinctive feature of the new diffusion model is an explicit consideration of the competition between an existing product and a new product due to the comparative advantage of the new product and also due to the closer introduction times of the existing product and the new product. Adopting an individual-level modeling approaching, this diffusion model incorporates the phenomena of: interaction of evaluations for successive generation innovations, risk-adjusted utility of the new product, increased new product utility over time, and the Bayesian process of uncertainty reduction. The proposed model has been compared with existing models using both empirical data from the color TV market, and computer-simulated market data. The comparison criteria are (1) goodness of fit in model estimation samples, and (2) forecast accuracy in model validation samples. The results of empirical comparison show that the proposed model performs better than the compared models on both criteria. The results of computer simulation comparison show that the proposed model and Lattin and Roberts' (1989) RAU model are the two best models with the latter being better than the former on goodness-of-fit in seven of twenty-eight market types, and the former being better than the latter on the accuracy of one-step-ahead sales forecasting in twenty-six markets. In addition, in markets characterized by strong consumer resistance, the proposed model is superior to the RAU model on both performance criteria. The proposed model is also superior to the Bass model (1969), a first-order-autoregressive model, and the Lattin and Roberts' (1989) model with price consideration in all the markets examined. Besides, the superiority of the proposed model to these three models increases more often in markets in which diffusion-deterring factors are present. Therefore, the proposed model has demonstrated its superior capabilities in modeling the diffusion of a new product in an environment characterized by stronger consumer resistance. Managerial implications of the proposed model in new product prelaunch forecasting and post-introduction adoption diagnosis are also discussed.Made available in DSpace on 2011-05-07T13:25:58Z (GMT). No. of bitstreams: 2
license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5)
9236415.pdf: 10052735 bytes, checksum: 67c36b8d2dc8b496fab527c9f765bce1 (MD5)
Previous issue date: 1992Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding ([email protected]) on 2011-05-07T14:54:41Z
Item is restricted indefinitely.Restriction data tranferred 2014-07-01T11:25:26-05:00
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Reason: ETDs are only available to UIUC Users without author permissionETDs are only available to UIUC Users without author permissionU of I Onl
The effect of high pressure on self-diffusion in beta-titanium
No full text"Diffusion of Ti44 into beta-titanium has been measured as a function of
pressure at approximately 10000C using standard lathe-sectioning techniques.
The diffusion coefficient is found to decrease with pressure, indicating a
positive activation volume. This result is in contradiction of earlier
reports of negative activation volumes for diffusion of Fe in S-Ti and U in
y-U.
The value obtained for the activation volume for self-diffusion in S-Ti
is approximately 3.6 ± 1.0 cm3/mOle, corresponding to ~V/VM = 0.33 + 0.1,
where VM is the molar volume. Comparison is made with atomic.models and
various proposed mechanisms for diffusion in the anomalous body-centered
cubic metals. The magnitude of ~V appears to be too large to be consistent
with the ""extrinsic"" vacancy mechanism of Kidson, but smaller than would
normally be expected for simple vacancy diffusion in bcc metals; It is
concluded that diffusion in beta-titanium most probably proceeds via a
combination of vacancy and short dislocation-path diffusion, known as the
Hart mechanism. Non-gaussian penetration profiles were observed in some of
the runs. This has been interpreted in terms of oxide hold-up of the tracer
at the surface and possible diffusion of the tracer as an oxide along dislocation
pipes or grain boundaries near the surface prior to dissociation."Submitted by Carolyn Mead ([email protected]) on 2011-07-26T20:20:12Z
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1970_jeffery.pdf: 2852702 bytes, checksum: fc1a5fea0d8b1f742fc3ef8f6b61bfdf (MD5)Made available in DSpace on 2011-07-26T20:20:12Z (GMT). No. of bitstreams: 1
1970_jeffery.pdf: 2852702 bytes, checksum: fc1a5fea0d8b1f742fc3ef8f6b61bfdf (MD5)
Previous issue date: 1970Restriction data tranferred 2014-07-01T11:33:10-05:00
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Reason: ThesisItem marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead ([email protected]) on 2011-07-26T20:20:12Z
Item is restricted indefinitely.ThesisU of I Onl
Photodisintegration of helium into protons and tritons between 180 and 320 MeV
No full textSubmitted by William Weathers ([email protected]) on 2012-04-09T18:44:24Z
No. of bitstreams: 1
1971_kiergan.pdf: 3767848 bytes, checksum: 5763e42e7fd48d1cbaa59511366f6bff (MD5)Made available in DSpace on 2012-04-09T18:44:25Z (GMT). No. of bitstreams: 1
1971_kiergan.pdf: 3767848 bytes, checksum: 5763e42e7fd48d1cbaa59511366f6bff (MD5)
Previous issue date: 1971Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by William Weathers ([email protected]) on 2012-04-09T18:44:25Z
Item is restricted indefinitely.Restriction data tranferred 2014-07-01T11:33:01-05:00
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Reason: ThesisThesisU of I Onl
Combined Local and Over-All Buckling of Rectangular Thin-Walled Tubular Columns
No full textMade available in DSpace on 2014-12-05T17:37:12Z (GMT). No. of bitstreams: 1
6100105.pdf: 1974902 bytes, checksum: 1f621d960f65aef474100e5e5dc1253c (MD5)
Previous issue date: 1960Embargo set by: Seth Robbins for item 57756
Lift date: Forever
Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDsRestricted to the U of I community idenfinitely during batch ingest of legacy ETDsU of I Only61 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1960
The Effect of Vitamin B12 on Some Aspects of Glycine Metabolism
No full textMade available in DSpace on 2014-12-05T17:47:30Z (GMT). No. of bitstreams: 1
0018121.pdf: 2167910 bytes, checksum: e93268df47773e06beaff180af494b56 (MD5)
Previous issue date: 1956Embargo set by: Seth Robbins for item 57858
Lift date: Forever
Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDsRestricted to the U of I community idenfinitely during batch ingest of legacy ETDsU of I Only55 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1956
The Application of Pulse Compression Techniques to Ionospheric Sounding
No full textMade available in DSpace on 2014-12-08T22:24:19Z (GMT). No. of bitstreams: 1
6801886.pdf: 6427179 bytes, checksum: 0c4223599ae3ba300977fd8f5feace55 (MD5)
Previous issue date: 1967Embargo set by: Seth Robbins for item 59857
Lift date: Forever
Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDsRestricted to the U of I community idenfinitely during batch ingest of legacy ETDsU of I Only236 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1967
Factors Influencing the Use and Priorities of Computing Applications in Industrial Teacher Education Departments in the Mississippi Valley Conference
No full textThis study investigated potential factors influencing the use of computer applications in Industrial Teacher Education departments.Research of the literature found that there are eleven major applications of computers that are used by Industrial Teacher Education departments: Administrative Data Processing, Word Processing, Research Data Processing, Computer Assisted Instruction, Computer Managed Instruction, Computer Literacy, Computerized Instructional Design, Software Technology, Hardware Technology, Computer Assisted Design, and Computer Aided Manufacturing.A questionnaire was then developed and sent to members of the Mississippi Valley Industrial Teacher Education Conference to investigate the uses and priorities of uses of these and any other computer applications that were to be found. This framework of eleven main applications was found to be complete. All of these eleven main applications were found to be used in sizable numbers.The study analyzed the levels of use and the priorities of use of these applications corresponding to a number of factors that might influence them. It found that while a number of factors might have minor influences on the use and priorities of use of these computer applications, there is no simple set of factors solely responsible for the use or nonuse of any of these computer applications or for the priorities thereof.The study conducted further investigations of six departments, reported to be amongst the leaders in using computer applications by means of telephone interviews. A variety of questions were asked in an attempt to uncover other factors which might influence the use of the computer applications within an Industrial Teacher Education department. The departments contacted provided a range of answers to most of these questions rather than a unified response. It was again found that no simple set of factors could be identified to be solely or primarily responsible for the use or nonuse of any of these computer applications or for the priorities thereof. Suggestions also were obtained to aid departments wishing to become involved with various computer applications.Made available in DSpace on 2014-12-15T18:49:19Z (GMT). No. of bitstreams: 1
8309922.pdf: 5987957 bytes, checksum: a5563406f9aa2ddd65b3075eeea877b6 (MD5)
Previous issue date: 1983Embargo set by: Seth Robbins for item 69009
Lift date: Forever
Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDsRestricted to the U of I community idenfinitely during batch ingest of legacy ETDsU of I Only185 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1983
Stratigraphy and Zonation of Wisconsinan Loesses in Southwestern Illinois
No full textMade available in DSpace on 2014-12-14T07:10:50Z (GMT). No. of bitstreams: 1
7726713.pdf: 9979025 bytes, checksum: 84a64db5073e01167a2def5fa2d2ffbb (MD5)
Previous issue date: 1977Embargo set by: Seth Robbins for item 68220
Lift date: Forever
Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDsRestricted to the U of I community idenfinitely during batch ingest of legacy ETDsU of I Only251 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1977
Studies on the Role of Oxytocin in Male Rabbits
No full textMade available in DSpace on 2014-12-12T00:36:22Z (GMT). No. of bitstreams: 1
7114945.pdf: 3507133 bytes, checksum: e18ad57c95f6ea24b22a37aa6cfc1381 (MD5)
Previous issue date: 1970Embargo set by: Seth Robbins for item 65485
Lift date: Forever
Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDsRestricted to the U of I community idenfinitely during batch ingest of legacy ETDsU of I Only100 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1970
An Experimental Study of the Time Dependence of the Beta Energy Spectrum From Uranium-235 Fission Fragments
No full textMade available in DSpace on 2014-12-09T19:52:18Z (GMT). No. of bitstreams: 1
6607763.pdf: 4018690 bytes, checksum: 6b0649452ef81906e1a88d6d6914fd7f (MD5)
Previous issue date: 1966Embargo set by: Seth Robbins for item 61408
Lift date: Forever
Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDsRestricted to the U of I community idenfinitely during batch ingest of legacy ETDsU of I Only115 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1966