Dr William D O’Brien Jr (1992, MBEC journal) — Inan Guler and Nihal Fatma Guler have 79 % PLAGIARIZED (1991, MBEC journal) from PhD thesis (1986, UIUC USA) of my student Paul M Embree

Dr William D O’Brien Jr (1992, MBEC journal) —
Inan Guler and Nihal Fatma Guler have 79 % PLAGIARIZED (1991, MBEC journal) from
PhD thesis (1986, UIUC USA) of my student Paul M Embree

William D O’Brien Jr (1992)

“Precision of the time-domain correlation ultrasonic flowmeter” (Letter),

Medical & Biological Engineering & Computing, 1992, 30, 672-673.

* http://www.brl.uiuc.edu/Publications/1992/O’Brien-MedBio-672-1992.pdf

Dear Editor —

In the July 1991 issue of Medical & Biological Engineering & Computing,
a communication was published
(‘Precision of the time-domain correlation ultrasonic flowmeter’
by İ. Güler, N.F. Güler, 29, (4), 447-450)
which showed a high degree of similarity to work published by
one of my former students in his doctoral thesis (EMBREE, 1986).
I would like to make the following comparison between the two documents.

The GÜLER and GÜLER (1991) communication consists of three sections.
Section 1 has 55 lines of text, 16 of which are essentially the same as
text on page 4 of EMBREE’s (1986) thesis.
Section 2 has 60 lines of text, all 60 of which are essentially the same as
text on pages 27-32 of EMBREE’s (1986) thesis.
Section 3 has 86 lines of text, 83 of which are essentially
the same as text on pages 25 and 32-35 of EMBREE’s (1986) thesis.
In total, out of a 201 lines of text, 159 lines (or 79 per cent) are essentially the same as
text on page 4 of EMBREE’s (1986) thesis.

The GÜLER and GÜLER (1991) communication contains 27 equations.
Their eqns. 1-25 are essentially the same (different notation only) as
eqns. 10-34 of EMBREE’s (1986) thesis, respectively.
And, their eqns. 26-27 are essentially the same (different notation only) as
eqns. 9 and 35 of EMBREE’s (1986) thesis, respectively.

The GÜLER and GÜLER (1991) communication lists seven references.
The two references of HELSTROM (1960) and FOSTER (1985) are referred to three times each.
All three of the Helstrom citations and two of the three Foster citations
in the GÜLER and GÜLER (1991) communication are at the identical locations as
those in EMBREE’s (1986) thesis.

The GÜLER and GÜLER (1991) communication has two figures.
These two figures appears to be exact copies of Figs. 7 and 8 from Embree’s thesis,
save for the change in fount of the axes.
Also the referencing of these two figures within
the GÜLER and GÜLER (1991) communication are at the identical locations as
those in EMBREE’s (1986) thesis.

Given the similarity of the two contributions,
it is surprising that GÜLER and GÜLER (1991) did not reference
the work of EMBREE’s (1986), or, for that matter, the publications
of Embree which resulted from his excellent thesis research
(EMBREE and O’BRIEN, 1990 ; FOSTER et al., 1990).
It is further surprising that in the peer-review process some of
the authors’ work was not improved and corrected.

References

EMBREE, P. M. (1986) The accurate ultrasonic measurment of the volume flow of blood by
time domain correlation. Ph.D. Thesis, University of Illinois at Urbana-Champaign.
* http://www.brl.uiuc.edu/Downloads/Embree-PhD-1986/PaulEmbree-PhD-Thesis.pdf

EMBREE, P. M. and O’BRIEN, W. D. Jr (1990) Volumetric blood flow via time-domain
correlation: experimental verification. IEEE Trans., UFFC-37, 176-189.

FOSTER, S. G. (1985) A pulsed ultrasonic flowmeter employing time domain methods.
Ph.D. Thesis, University of Illinois at Urbana-Champaign.

FOSTER, S. G., EMBREE, P. M. and O’BRIEN, W. D. Jr (1990) Flow velocity profile via
time-domain correlation: error analysis and computer simulation. IEEE Trans., UFFC-37,
164-175.

GÜLER, İ., GÜLER, N. F. (1991) Precision of the time-domain correlation ultrasonic
flowmeter, Med. & Biol. Eng. & Comput., 1992, 30, 672-673.
* http://link.springer.com/article/10.1007%2FBF02441668?LI=true

HELSTROM, C. W. (1960) Statistical theory of signal detection, Pergamon Press, Oxford.

William D O’Brien Jr, Department of Electrical and Computer Engineering, University of
Illinois, 1406 West Green Street, Urbana, Il 62802, USA.

Received 9th March 1992

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