Title	A Secure Approach to Audio Steganography
Author	Nisha Kundu and Dr. Amandeep Kaur
Citation	Vol. 26  No. 2  pp. 147-153
Keywords	Audio Steganography, Encryption, Audio Encryption, Modified LSB, Vigenere Square Encryption Algorithm, LSB Coding , PSNR-Peak signal to noise ratio, MSE-mean square error.

Title	Analysis and Examine of WAN Performance
Author	Meishan Sedaghati and Abrosimov Leonid Ivanovich
Citation	Vol. 26  No. 2  pp. 137-146
Keywords	WAN, Network design, Communication channels, Mathematical WAN model, Unit, Transaction, Serving node, Contour

Title	Contextual Design Solutions with an Emphasis on Humanistic Context; Case Study: Historical Context of Langerud
Author	Seyyedeh Shima zeynolabedini, Arash mehrgani
Citation	Vol. 26  No. 2  pp. 123-130
Keywords	Contextualism, historical value, humanistic contextualism, sense of place, Langerud.

Title	Designing Scheduling Problem in Continuous Production System in Two-Level Supply Chain
Author	Seyyed Mohammad Hadji Molana1, iman nematollahi
Citation	Vol. 26  No. 2  pp. 113-122
Keywords	Supply chain, cell production, and scheduling, continuous production