Karlis ROCENS

Born: March 3, 1939, Riga, Latvia

 Interests:

• Structural Engineering
• Technological Mechanics of Composite Building Materials
• Wood and Wood Materials Science and Technology

Languages: Latvian, Russian, English

Education

• Riga Technical University (Faculty of Civil Engineering), 1963
• Dr.sc.ing. (Candidate of Science in former USSR, Ph.D. in Western countries), Lvov Polytechnical Institute, Ukraine, 1967
• Dr.habil.sc.ing. (Doctor of science in former USSR), Moscow State University of Civil Engineering, Russia, 1980

Experience

• Junior Researcher and Senior Engineer, Head of Group, Institute of Polymer Mechanics, Latvian Academy of Sciences, 1963-1967
• Senior Researcher, Department of Materials Mechanics, Latvia University of Agriculture, 1967-1968
• Senior Researcher and Scientific Secretary, Institute of Wood Chemistry, Latvian Academy of Sciences, 1968-1972
• Head of the Laboratory of Modification of Wood at the Institute of Wood Chemistry, Latvian Academy of Sciences, 1972-1985
• Professor, Head of the Department of Structural Engineering, Riga Technical University, 1985- 1999, 2004-
• Director of the Institute of Structural Engineering and Reconstruction, 1993- 2004, 2006-
• Professor, Head of the Group of Design of Structures, Riga Technical University, 1999 - 2004
• Chairman of the Expert Commission, Latvian Building Materials Sertification Centre, 1999 - 2002

Honours and Awards

• Corresponding Member, Latvian Academy of Sciences, 1995-1997
• Full Member, Latvian Academy of Sciences, 1997 -
• The Latvian Academy of Sciences Presidium First Award, 1972 and 1980
• Fridrih Cander’s name prize , 2007.

 Professional Activities and Memberships

• President, Latvian Materials Research Society, 1994-2003
• Editor: Designing and Optimization of Structures of Buildings, Riga Polytechnical Institute (in Russian), 1988-1991
• Expert on wood and wood materials and structures at the Moscow State Forest University, 1997-
• Member, Scientific Committee of the International conference on Modern Building Materials, Structures and Techniques (1995, 1997, 1999, 2001, 2004, 2007 )
• Member, Local organizing committee of the International Conferences on Mechanics of Composite Materials, 1995, 1998, 2000, 2002, 2004, 2006
• Member, Executive Committee of the Association of Baltic Materials Societies
• Member, Regional Coordinating Council of Wood Science at the Moscow State Forest University, 1990-
• Member, Council of the European Ceramic Society (1995-1997)
• Member, Council of the Latvian Civil Engineers Society, 1990-1994
• Member, Latvian National Committee for Mechanics, 1992-
• Member of Editorial Board for journal Civil Engineering and Management ("Statyba", Lithuania), 1999 -
• Member, COST Technical Committee (Urban Civil Engineering) of European Commission, 1999 – 2005.

Lectures

• Regulation variants of properties of wood. USSR Conference on Theoretical Aspects of Modification of Wood, Riga, April 26, 1983
• Modern approach to the improvement of wood technical properties. USSR Conference on Problems of Complex Use of Wooden Materials. Riga, October 11, 1984
• Ideological principles of numerous structural constructive kinds of the vegetable kingdom. Wood behaviour in the process of its structural modification. To the group of scientific staff from Chinese Academy of Forestry. Riga, Autumn 1990

Courses

Riga Technical University

• Structural Engineering. , 1995-
• Design of Timber and Composite Materials Structures, 1982-
• Design of Timber and Wood Materials Structures, 1996-

 Recent/Representative Publications

• A.Skudra, F.Bulavs, K.Rocens. Kriechen und Zeitstandverhalten Verstärkter Plaste, 1975, Leipzig: VEB Deutscher Verlag für Grundstaff-industrie, 215 S.
• K.Rocens. Grundlagen von Berechnungen an Armierten Lagen-holzwerkstoffen.- Holztechnologie, 1975, Bd.16, H2, S.112-116
• K.Rocens. Rheological Features of Wood Plasticized with Ammonia. - J. Appl.Polym.Sci., Appl.Polym.Symp., 1976, 28, pp.1109-1116
• K.Rocens, K.Steiners. Estimation of the Compliance and Stiffness of Unbalanced Monoclinic Composites.- Polymer Mechanics. 1976, 6, Riga: Zinatne, pp.1030-1035 (in Russian)
• K.Rocens, P.Sabulis. Relationships of Deformation of Short Fibre Reinforced Concrete with Due Regard for Modification of Rheological Coefficients.-Technological Mechanics of Concrete, 1977, 2, RPI, pp.14-28 (in Russian)
• K.Rocens, K.Steiners. Provisional Relationships of the Compliances of Polycomponent Layered Composite.- Polymer Mechanics, 1978, 6, Riga: Zinatne, pp.1020-1026 (in Russian)
• K.Rocens. Technological Regulation of the Properties of Wood. 1979, Riga: Zinatne, 224 pp. (in Russian)
• K.Rocens, A.Berzonis, J.Gulbis. Peculiar Properties of Modified Wood, 1983, Riga: Zinatne, 207 pp. (in Russian)
• K.Rocens. Macrostructure Theory of Modification of Wood Properties.-J.Appl.Polym.Sci., Appl.Polym.Symp., 1983, 37, pp.923-941
• A.Berzonis, P.Videnieks, K.Rocens (et.al.). Mounting Plates Made of Wooden Pressed Mass, 1987, Riga: Zinatne, 124 pp. (in Russian)
• J.Brauns, K.Rocens. Applied Model of Composite with Incomplete Bonding and Finite Length of Reinforcing Elements. - Mechanics of Composite Materials, 1991, 27(5). pp. 567-573, (New York: Plenum Publ.Co).
• J.Brauns, K.Rocens. Analysis of the Effect of Stress State of Structural Elements on the Viscoelastic Properties of a Composite. - Mechanics of Composite Materials, 1993, vol. 29(1), pp.20-26 (New York: Plenum Publ.Co).
• J.Brauns, K.Rocens. Nonlinear Moisture Deformation of a Composite with a Densified Reinforcement. Mechanics of Composite Materials. 1994, 30(3), pp.222-226 (New York: Plenum Publ.Co).
• K.Rocens, L.Pakrastins, J.Brauns. Warping of Composite materals.- Proceedings of the Int.conf. "Strength, Durability and Stability of Materials and Structures", 1996, Kaunas, Lithuania, pp. 248-252.
• I.Brauns, K.Rocens. Hydromechanical behaviour of wooden composites. - Wood Sci.&Technol., 1997, vol. 31, pp. 193-204 (Springer Verlag).
• I.Brauns, K.Rocens. Performance and optimum design of the inner steel liner of a thermobattery. - J. Constructional Steel Research, 1999, vol. 49, pp. 181-188 (Elsewere).
• D.Serdjuks, K.Rocens, L.Pakrastinsh. rational geometrical characters of saddle shape cable roof supported by tensioned cables. - Proc. 6th  Int. Conf. "Modern Building Materials, Structures and Techniques", Vilnius, 1999, vol.II, pp. 122-127.
• D.Serdjuks, K.Rocens, L.Pakrastinsh. Utilization of composite materials in saddle shape cable roof. - Mechanics of Composite Materials, 2000, vol. 36, N 5, pp. 637-644 (in Russian).
• J.Brauns, K.Rocens. The effect of reinforcement on properties of porous materials. – Proceedings of 2^nd BIOPT Conference on Poromechanics, Grenoble, France, 26-28 August, 2002. POROMECHANICS II, A.A.Balkema Publ., pp.135-140.
• D.Serdjuks, K.Rocens. Rational shape of square in plan saddle shape cable roof.. - Proc. 10^th International Scientific-Technical Conference "Metal Structures”, Gdansk, Poland, 2001, vol.2, pp. 301-307.
• J.Brauns, K.Rocens. Design of hymidity sensitive wooden materials for multi-objective applications. – In: Wood Science and Technology, 2005, Springer-Verlag, vol.38, pp.311-321.
• J.Brauns, K.Rocens. The effect of material strength on the behaviour of concrete-filled steel elements. – Journal of Civil Engineering and Management, 2004, vol.X, No 3, pp.177-182.
• L.Pakrastinsh, K.Rocens. Cable material consumption depending on the geometrical parameters of hierarchic roof. Proceedings of the final conference of COST Action C12. Insbruck. 2005 185-192.
• J.Brauns, K.Rocens. Reinforced Materials: Elastic Properties and Strength Prediction. Encyclopedia of Materials: Science and technology. (2005) pp.1-9.
• L.Pakrastinsh, K.Rocens, D.Serdjuks. Deformability of hierarchic cable roof. Journal of Constructional Steel Research, Vol. 62, Issue 12, December 2006. Elsevier, Oxford, p.1295 – 1301.
•  

Research Projects

• K.Rocens (Head of Project). Development of Scientific Basis for Rational Utilization of Wooden Staff in Formation of Constructional Materials. Latvian Council of Science (1994-1996)
• K.Rocens (Head of RTU Part of Project). Research Program of national importance. Investigation, Technology and Rational Use of Composite Materials in Engineering Structures. Latvian Council of Science. 1997- 2001.
• K.Rocens (one of the executors of the Project). Research Program of national importance. Perfection of Security, Durability and Protection of the Materials and Structures. Latvian Council of Science, 1997-2001.
• K.Rocens (managing executors of two subprograms) Materials for Latvian national economy: development of technologies, investigation of qualities, designing, drafting of rational utilization of basic principles, 2002-2005.
• K.Rocens (managing executors of the section) COST Action C12. Improvement of Buildings Structural Quality by New Technologies. 2000 - 2004.
• K.Rocens head of two subprograms sections in the project of interdepartment research. Innovative structurally integrate composite materials: design, technologies of acquisition and processing, sustainability. 2006-
• K.Rocens (managing executor of the section) COST Action C25. Sustainability of Constructions: Integrated Approach to Life – Time Structural Engineering. 2006 -2010.

Hobbies: Bee-keeping, Landscape formation, Tree growing

Last update 21.02.2007