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E-procurement quality from an internal customer perspective : construct development, refinement, and replication using a mixed-methods approach

Brandon-Jones, Alistair - In: International journal of operations & production … 37 (2017) 12, pp. 1741-1772

Persistent link: https://www.econbiz.de/10011814723

Sourcing/Contracting Strategy Selection

Ramsay, J.; Wilson, I. - In: International Journal of Operations & Production Management 10 (1990) 8, pp. 19-28

The strategy combination of single sourcing and long‐term contracts is rapidly becoming the norm in progressive purchasing functions. The implications of this radical development is examined by disentangling the advantages and disadvantages of the separate strategies before recombining them to...

Persistent link: https://www.econbiz.de/10014790264

The joint analysis of direct ratings, pairwise preferences, and dissimilarities

Ramsay, J. - In: Psychometrika 45 (1980) 2, pp. 149-165

Persistent link: https://www.econbiz.de/10005376316

Ramsay, J. - In: Psychometrika 49 (1984) 2, pp. 284-284

Persistent link: https://www.econbiz.de/10005376326

Monotone spline transformations for dimension reduction

Winsberg, S.; Ramsay, J. - In: Psychometrika 48 (1983) 4, pp. 575-595

Persistent link: https://www.econbiz.de/10005376329

Winterfeldt, Detlof; Olson, Chester; Ramsay, J. - In: Psychometrika 42 (1977) 3, pp. 451-455

Persistent link: https://www.econbiz.de/10005381601

Matrix correlation

Ramsay, J.; Berge, Jos; Styan, G. - In: Psychometrika 49 (1984) 3, pp. 403-423

Persistent link: https://www.econbiz.de/10005381620

A comparison of three simple test theory models

Ramsay, J. - In: Psychometrika 54 (1989) 3, pp. 487-499

Persistent link: https://www.econbiz.de/10005381761

Matfit: A fortran subroutine for comparing two matrices in a subspace

Ramsay, J. - In: Psychometrika 55 (1990) 3, pp. 551-553

Persistent link: https://www.econbiz.de/10005381803

The effect of number of categories in rating scales on precision of estimation of scale values

Ramsay, J. - In: Psychometrika 38 (1973) 4, pp. 513-532

Persistent link: https://www.econbiz.de/10005381824

A service of the