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51

Elementary Students’ Scientific Epistemological Beliefs in Relation to Socio-Economic Status and Gender

Kudret Ozkal, Ceren Tekkaya, Semra Sungur, Jale Cakiroglu, Erdinc Cakiroglu

Journal:

Journal of Science Teacher Education

Year:

2010

Language:

english

File:

PDF, 193 KB

english, 2010

52

Thermally Sprayed Coatings as Effective Tool Surfaces in Sheet Metal Forming Applications

V. Franzen, J. Witulski, A. Brosius, M. Trompeter, A. E. Tekkaya

Journal:

Journal of Thermal Spray Technology

Year:

2011

Language:

english

File:

PDF, 789 KB

english, 2011

53

Influence of cooling rate on distortion and microstructure in extrusion of Al-Mg-Si alloys

Andreas Jäger, Markus Heilmann, Wojciech Z. Misiolek, Marco Schikorra, A. Erman Tekkaya

Journal:

International Journal of Material Forming

Year:

2009

Language:

english

File:

PDF, 1.76 MB

english, 2009

54

Comparison of different FEM code approaches in the simulation of the die deflection during aluminium extrusion

L. Donati, N. Ben Khalifa, L. Tomesani, A. E. Tekkaya

Journal:

International Journal of Material Forming

Year:

2010

Language:

english

File:

PDF, 2.49 MB

english, 2010

55

Direct recycling of 1050 aluminum alloy scrap material mixed with 6060 aluminum alloy chips by hot extrusion

V. Güley, N. Ben Khalifa, A. E. Tekkaya

Journal:

International Journal of Material Forming

Year:

2010

Language:

english

File:

PDF, 3.94 MB

english, 2010

56

Joining of lightweight frame structures by die-less hydroforming

M. Marré, S. Gies, F. Maevus, A. E. Tekkaya

Journal:

International Journal of Material Forming

Year:

2010

Language:

english

File:

PDF, 2.73 MB

english, 2010

57

Students' Achievement in Human Circulatory System Unit: The Effect of Reasoning Ability and Gender

Semra Sungur, Ceren Tekkaya

Journal:

Journal of Science Education and Technology

Year:

2003

Language:

english

File:

PDF, 57 KB

english, 2003

58

Facilitating Conceptual Change in Students' Understanding of Ecological Concepts

Özlem Özkan, Ceren Tekkaya, Ömer Geban

Journal:

Journal of Science Education and Technology

Year:

2004

Language:

english

File:

PDF, 79 KB

english, 2004

59

Prevention of Internal Cracks in Forward Extrusion by Means of Counter Pressure: A Numerical Treatise

C. Soyarslan, A. E. Tekkaya

Journal:

steel research international

Year:

2009

Language:

english

File:

PDF, 663 KB

english, 2009

60

Investigation on a Deep Drawing and In-Process Electromagnetic Calibration

Désirée Risch, Verena Psyk, A. Erman Tekkaya

Journal:

steel research international

Year:

2009

Language:

english

File:

PDF, 624 KB

english, 2009

61

Yield locus evolution and constitutive parameter identification using plane strain tension and tensile tests

M.-S. Aydın, J. Gerlach, L. Kessler, A.E. Tekkaya

Journal:

Journal of Materials Processing Technology

Year:

2011

Language:

english

File:

PDF, 1.32 MB

english, 2011

62

The contribution of understandings of evolutionary theory and nature of science to pre-service science teachers’ acceptance of evolutionary theory

Gülsüm Akyol, Ceren Tekkaya, Semra Sungur

Journal:

Procedia - Social and Behavioral Sciences

Year:

2010

Language:

english

File:

PDF, 185 KB

english, 2010

63

Antioxidative and Free Radical Scavenging Properties of Rosemary Extract

Huveyda Basaga, Ceren Tekkaya, Funda Acikel

Journal:

Lebensmittel-Wissenschaft und-Technologie / Food Science and Technology

Year:

1997

Language:

english

File:

PDF, 73 KB

english, 1997

64

Bulk forming of sheet metal

M. Merklein, J.M. Allwood, B.-A. Behrens, A. Brosius, H. Hagenah, K. Kuzman, K. Mori, A.E. Tekkaya, A. Weckenmann

Journal:

CIRP Annals - Manufacturing Technology

Year:

2012

Language:

english

File:

PDF, 3.62 MB

english, 2012

65

Industrielle Anwendungen für das neue Fertigungsverfahren Runden beim Strangpressen

Dipl.-Wirt.-Ing. Dirk Becker, Dipl.-Inform. Alessandro Selvaggio, Dr.-Ing Dipl.-Wirt.-Ing. Michael Marré, Prof.-Dr.-Ing. A. Erman Tekkaya

Journal:

Lightweight Design

Year:

2009

Language:

german

File:

PDF, 2.82 MB

german, 2009

66

Relationships among Teachers’ Knowledge and Beliefs Regarding the Teaching of Evolution: A Case for Turkey

Tekkaya, Ceren, Akyol, Gülsüm, Sungur, Semra

Journal:

Evolution: Education and Outreach

Year:

2012

Language:

english

File:

PDF, 293 KB

english, 2012

67

The Comparative Effects of Prediction/Discussion-Based Learning Cycle, Conceptual Change Text, and Traditional Instructions on Student Understanding of Genetics

Yilmaz, Diba, Tekkaya, Ceren, Sungur, Semra

Journal:

International Journal of Science Education

Year:

2011

Language:

english

File:

PDF, 138 KB

english, 2011

68

A simple finite strain non-linear visco-plastic model for thermoplastics and its application to the simulation of incremental cold forming of polyvinylchloride (PVC)

Alkas Yonan, S., Soyarslan, C., Haupt, P., Kwiatkowski, L., Tekkaya, A.E.

Journal:

International Journal of Mechanical Sciences

Year:

2013

Language:

english

File:

PDF, 1.86 MB

english, 2013

69

Enhancing learning through

Özdermir, P.inar, Güneysu, Sibel, Tekkaya, Ceren

Journal:

Journal of Biological Education

Year:

2006

Language:

english

File:

PDF, 143 KB

english, 2006

70

The Increased Forming Limits of Incremental Sheet Forming Processes

Allwood, J.M., Shouler, D.R., Tekkaya, A.Erman

Journal:

Key Engineering Materials

Year:

2007

Language:

english

File:

PDF, 1.55 MB

english, 2007

71

Using the conceptual change instruction to improve learning

Alparslan, Cem, Tekkaya, Ceren, Geban, Ömer

Journal:

Journal of Biological Education

Year:

2003

Language:

english

File:

PDF, 103 KB

english, 2003

72

Turkish Pre‐Service Science Teachers’ Views on Science–Technology–Society Issues

Yalvac, Bugrahan, Tekkaya, Ceren, Cakiroglu, Jale, Kahyaoglu, Elvan

Journal:

International Journal of Science Education

Year:

2007

Language:

english

File:

PDF, 144 KB

english, 2007

73

Improving achievement through problem-based learning

Sungur, Semra, Tekkaya, Ceren, Geban, Ömer

Journal:

Journal of Biological Education

Year:

2006

Language:

english

File:

PDF, 93 KB

english, 2006

74

A Comparative Study on Pre-Service Teachers' and Elementary Students' Attitudes towards the Environment

Tuncer, Gaye, Sungur, Semra, Tekkaya, Ceren, Ertepinar, Hamide

Journal:

International Research in Geographical and Environmental Education

Year:

2007

Language:

english

File:

PDF, 190 KB

english, 2007

75

Groove Filling Characteristics and Strength of Form-Fit Joints Produced by Die-Less Hydroforming

Gies, Soeren, Weddeling, Christian, Kwiatkowski, Lukas, Tekkaya, A. Erman

Journal:

Key Engineering Materials

Year:

2013

Language:

english

File:

PDF, 1.52 MB

english, 2013

76

On the Study of Constitutive Parameter Identification of Advanced Yield Criteria

Aydin, M.S., Canpolat, Aykut, Gerlach, Jörg, Kessler, Lutz, Tekkaya, A. Erman

Journal:

Key Engineering Materials

Year:

2011

Language:

english

File:

PDF, 864 KB

english, 2011

77

60 Excellent Inventions in Metal Forming || Fine Blanking of Helical Gears

Tekkaya, A. Erman, Homberg, Werner, Brosius, Alexander

Year:

2015

Language:

english

File:

PDF, 273 KB

english, 2015

78

60 Excellent Inventions in Metal Forming ||

Tekkaya, A. Erman, Homberg, Werner, Brosius, Alexander

Year:

2015

Language:

english

File:

PDF, 14.83 MB

english, 2015

79

[Engineering Materials] Formability of Metallic Materials || Workpiece Properties After Metal Forming

Banabic, Dorel, Bunge, H.-J., Pöhlandt, K., Tekkaya, A. E., Banabic, Dorel

Year:

2000

Language:

english

File:

PDF, 4.03 MB

english, 2000

80

Increased Productivity in Hot Aluminum Extrusion by Using Extrusion Dies with Inner Cooling Channels Manufactured by Rapid Tooling

Hölker, Ramona, Haase, Matthias, Ben Khalifa, Nooman, Tekkaya, A. Erman

Journal:

Key Engineering Materials

Year:

2014

Language:

english

File:

PDF, 1.91 MB

english, 2014

81

Extrusion Benchmark 2013 - Experimental Analysis of Mandrel Deflection, Local Temperature and Pressure in Extrusion Dies

Selvaggio, Alessandro, Kloppenborg, Thomas, Schwane, Martin, Hölker, Ramona, Jäger, Andreas, Donati, Lorenzo, Tomesani, Luca, Tekkaya, A. Erman

Journal:

Key Engineering Materials

Year:

2013

Language:

english

File:

PDF, 2.08 MB

english, 2013

82

Newest Developments on the Manufacture of Helical Profiles by Hot Extrusion

Khalifa, Nooman Ben, Tekkaya, A. Erman

Journal:

Journal of Manufacturing Science and Engineering

Year:

2011

Language:

english

File:

PDF, 5.63 MB

english, 2011

83

3D Numerical Analysis of 2D Profile Bending with the Torque Superposed Spatial Bending Method

Hudovernik, Matej, Staupendahl, Daniel, Gharbi, Mohammad, Hermes, Matthias, Tekkaya, A. Erman, Kuzman, Karl, Slabe, Janez Marko

Journal:

Strojniški vestnik – Journal of Mechanical Engineering

Year:

2013

Language:

english

File:

PDF, 6.51 MB

english, 2013

84

An Experimental and Numerical Assessment of Sheet-Bulk Formability of Mild Steel DC04

Soyarslan, Celal, Fassmann, Dennis P. F., Plugge, Björn, Isik, Kerim, Kwiatkowski, Lukas, Schaper, Mirko, Brosius, Alexander, Tekkaya, A. Erman

Journal:

Journal of Manufacturing Science and Engineering

Year:

2011

Language:

english

File:

PDF, 6.75 MB

english, 2011

85

A new test for determining fracture toughness in plane stress in mode II

Kerim, I., Silva, M. B., Atkins, A., Tekkaya, A., Martins, P. A.

Journal:

Journal of Strain Analysis for Engineering Design

Year:

2015

Language:

english

File:

PDF, 2.43 MB

english, 2015

86

An Experimental and Numerical Investigation on Polymer Melt Injected Sheet Metal Forming

Hussain, Muhammad Masood, Trompeter, Michael, Witulski, Jörg, Tekkaya, A. Erman

Journal:

Journal of Manufacturing Science and Engineering

Year:

2012

Language:

english

File:

PDF, 10.92 MB

english, 2012

87

AIP Conference Proceedings [AIP THE 14TH INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2011 - Belfast, (United Kingdom) (27–29 April 2011)] - A Viscoplastic Material Model Based on Overstress for the Simulation of Incremental Sheet Forming of Thermoplastics

Yonan, S. Alkas, Haupt, P., Kwiatkowski, L., Franzen, V., Brosius, A., Tekkaya, A. E.

Year:

2011

Language:

english

File:

PDF, 1.94 MB

english, 2011

88

Advancements in the manufacturing of dies for hot aluminum extrusion with conformal cooling channels

Hölker, Ramona, Tekkaya, A. Erman

Journal:

The International Journal of Advanced Manufacturing Technology

Year:

2016

Language:

english

File:

PDF, 2.52 MB

english, 2016

89

60 Excellent Inventions in Metal Forming || Fast Semi-analytical Approach for Deep Drawing Processes

Tekkaya, A. Erman, Homberg, Werner, Brosius, Alexander

Year:

2015

Language:

english

File:

PDF, 337 KB

english, 2015

90

Finite element analysis of combined forming processes by means of rate dependent ductile damage modelling

Kiliclar, Y., Vladimirov, I. N., Wulfinghoff, S., Reese, S., Demir, O. K., Weddeling, C., Tekkaya, A. E., Engelhardt, M., Klose, C., Maier, H. J., Rozgic̀, M., Stiemer, M.

Journal:

International Journal of Material Forming

Year:

2017

Language:

english

File:

PDF, 4.54 MB

english, 2017

91

Industrial Benchmark 2015: Process Monitoring and Analysis of Hollow EN AW-6063 Extruded Profile

Gamberoni, A., Donati, L., Reggiani, B., Haase, M., Tomesani, L., Tekkaya, A.E.

Journal:

Materials Today: Proceedings

Year:

2015

Language:

english

File:

PDF, 3.05 MB

english, 2015

92

Fracture toughness and failure limits in sheet metal forming

Silva, M.B., Isik, K., Tekkaya, A.E., Atkins, A.G., Martins, P.A.F.

Journal:

Journal of Materials Processing Technology

Year:

2016

Language:

english

File:

PDF, 491 KB

english, 2016

93

The Impact of Torsion on the Bending Curve during 3D Bending of Thin-Walled Tubes - A Case Study on Forming Helices

Staupendahl, Daniel, Becker, Christoph, Tekkaya, A. Erman

Journal:

Key Engineering Materials

Year:

2015

Language:

english

File:

PDF, 549 KB

english, 2015

94

Enhanced granular medium-based tube and hollow profile press hardening

Chen, Hui, Hess, Sigrid, Haeberle, Jan, Pitikaris, Sebastian, Born, Philip, Güner, Alper, Sperl, Matthias, Tekkaya, A. Erman

Journal:

CIRP Annals - Manufacturing Technology

Year:

2016

Language:

english

File:

PDF, 1.96 MB

english, 2016

95

Enhancing Students' Understanding of Photosynthesis and Respiration in Plant through Conceptual Change Approach

Ayse Yenilmez and Ceren Tekkaya

Journal:

Journal of Science Education and Technology

Year:

2006

Language:

english

File:

PDF, 1.41 MB

english, 2006

96

Effects of Problem-Based Learning and Traditional Instruction on Self-Regulated Learning

Semra Sungur and Ceren Tekkaya

Journal:

The Journal of Educational Research

Year:

2006

Language:

english

File:

PDF, 1.98 MB

english, 2006

97

AIP Conference Proceedings [Author(s) ESAFORM 2016: Proceedings of the 19th International ESAFORM Conference on Material Forming - Nantes, France (27–29 April 2016)] - Simulation of sheet-bulk metal forming processes with simufact.forming using user-subroutines

Beese, Steffen, Beyer, Florian, Blum, Heribert, Isik, Kerim, Kumor, Dustin, Löhnert, Stefan, Rademacher, Andreas, Tekkaya, A. Erman, Willner, Kai, Wriggers, Peter, Zeller, Sebastian

Year:

2016

Language:

english

File:

PDF, 117 KB

english, 2016

98

Efficient Modelling and Simulation of Process Chains in Sheet Metal Forming and Processing

Cwiekala, Tim, Brosius, Alexander, Erman Tekkaya, A., Grydin, Olexandr, Schaper, Mirko, Bach, Friedrich-Wilhelm, Barthel, Clemens, Svendsen, Bob

Journal:

steel research international

Year:

2008

Language:

english

File:

PDF, 1.68 MB

english, 2008

99

The Development of Ring Rolling Technology

Allwood, Julian M., Tekkaya, A. Erman, Stanistreet, Timothy F.

Journal:

steel research international

Year:

2005

Language:

english

File:

PDF, 2.11 MB

english, 2005

100

The Development of Ring Rolling Technology - Part 2: Investigation of Process Behaviour and Production Equipment

Allwood, Julian M., Tekkaya, A. Erman, Stanistreet, Timothy F.

Journal:

steel research international

Year:

2005

Language:

english

File:

PDF, 3.71 MB

english, 2005