Table 8 Linkages of following firms are used in this study

Technology Hardware & Equipment Industry group firms (73 firms)

3Com Corporation, Acer, Adaptec, ADC Telecommunications, Agilent, Airwide, Alcatel-Lucent, American Megatrends India Pvt. Ltd., ArchPro Design Automation, Aruba Networks, ASUSTeK Computer Inc/ASUS Technology Pvt. Ltd., Aztek Networks, Barco NV, Brocade, China Wireless Technologies Ltd./Coolpad, Ciena Corporation, Cisco Systems Inc., C-Mac Industries Inc., Comverse Technology Inc., Coolpad Software Tech (Shenzhen) Co. Ltd., Dell Inc., Diebold Incorporated, D-Link, ECI Telecom Ltd., Electronics For Imaging Inc., EMC Corporation, Emulex, Extreme Networks Inc, Flextronics, Fujitsu, Genband, Hewlett-Packard, Hitachi, Ltd., Huawei-3Com, Infinera, IronPort systems, Ixia, Juniper Networks, Kyocera Wireless Corp., Lenovo, LG Electronics, Life Size Communications Inc., Lucent Technologies, Metro Optix Inc, Mobi Apps, Motorola, Inc. National Instruments, NCR Corporation, NEC Electronics Corp., NeoAccel, Nokia Corporation, Nortel, Patton Electronics Company, Polycom Inc., Powerwave Technologies Inc., ProCurve Networking Inc., Qalcomm, Quantum, SanDisk, SCM Microsystems, Silicon Graphics Inc., Sony Ericsson (Sony Ericsson Mobile Communications A.B.), Sun Microsystems, Tandberg, Tekelec, Tektronix Inc, Telefonaktiebolaget LM Ericsson, Teradata Corporation, Topspin Communications, Toshiba Corp., Tyco International Ltd (Tyco Electronics), UTStarcom, Wyse Technology Inc.

Semiconductor Industry (26 firms)

Alliance Semiconductor, AMD, Analog Devices, Applied Materials Inc., ARM Holdings plc, ATI Airtest Technologies Inc., Broadcom, Conexant Systems Inc, Cypress Semiconductor, DiBcom, Freescale Semiconductor Inc., Globespan Virata, Infineon Technologies, Intel Corporation, Nvidia Corporation, NXP Semiconductors, Portal Player, Qualcore Logic Inc, Renesas, Samsung, Skyworks, ST Microelectronics, Texas Instruments Inc, Tundra Semiconductor Corp., VIA Technologies Inc., Xilinx Inc.

Software and Services Industry (106 firms)

Accenture, Adobe, ADP Wilco Limited, Airbee Wireless Inc., Amdocs Ltd. Ariba, Inc., ASG Software Solutions/ Allen Systems Group, Inc., Atrenta Inc., Autodesk, Inc., Automatic Data Processing, Aventail Corporation (Merged with sonic wall), AXIOM Design Automation, BEA Systems, BMC Software, Borland, Bubble Motion, Business Objects S.A., CA Inc., Cadence, Canon Inc., Capco Group, Capgemini , Citrix Systems, Cognizant Technology, Computer Sciences Corporation, Connectiva Systems, Convergys Corporation, Cordys, CoWare, eBay Inc., EMAGIA Corporation, Emptoris Inc. Ensim Corporation, FCG Software Services Inc., Fortinet Inc., Global Automation Inc., GlobalLogic Inc., Google, i2 Technologies, Iflex (owned by Oracle), International Business Machines Corporation, iGATE Corp., IKOS Systems, InfoPro Corporation, Infor Global Solutions (Formally BAAN Software), Informatica Corporation, InfoSpace, Inc., Intec Ltd., Intellisys, Interwoven Inc., Intoto Inc. (Acquired by Freescale Semiconductor), Kanbay International, Inc., Keane International India Private Limited, Kronos Incorporated, Latens Systems Limited, Logica PLC MACH S.à.r.l. Magma Design, McAfee Inc., Mentor Graphics, Microsoft, NDS Group, Nokia Siemens Networks, Novell Inc., Oracle Corporation, Parametric Technology, Pegasystems, Pervasive Soft, Rainbow Technologies Inc, Red Hat, Sanovi Technologies Corporation, SAP, Savvion, Selectica, Sequence Design Inc., SolidWorks Corporation, Solix Technologies, SonicWall Sonim Technologies, Staccato Communications Inc., SumTotal Systems Inc., SunGard , Symantec, Symphony Service Corp., Synopsys Inc., Synplicity Inc., Tekla Corporation, Telcordia Technologies Inc, Telenity, Tensilica Inc., Tibco Software Inc., Torry Harris Business Solutions Inc., Traian, Trend Micro Inc, Ubics Inc., UGS Corp., Unisys Corporation, USinternetworking Inc., Vanu Inc., VeriSign Inc., Veritas Software, Virtusa Corp., VMware Inc. Wind River Systems Inc., Witness Systems Inc., Yahoo! Inc., Zoho Corporation (formally AdventNet, Inc.)