Contemporary steganography approaches suffer from many serious deficiencies; generally, they attempt to hide data as detectable and suspicious noise in a cover that is assumed to look innocent. In addition, steganography approaches found in literature have focused on how to conceal a message and not on how to camouflage its transmittal. This paper presents a comprehensive survey that focuses mainly on, but not limited to, computational linguistics aspects of steganography and it is organised as follows: Section 1 concisely details the fundamental concepts related to steganography, summarises the current state of the research, and highlights the technical concerns. Then, it briefly describes the modern steganography, namely noiseless steganography (Nostega). Section 2 discusses the contemporary steganography and Nostega paradigm (the modern steganography). Section 3 demonstrates Nostega-based methodologies. Section 4 presents a brief overview of steganalysis. Section 5 concludes the survey and highlights directions for future research.
London Hotspots for Noise Nuisance Complaints [Infographic]
As we continues our quest to build up a noise nuisance map of the UK, we recently turned our attention to our fair Capital, London. With 33 boroughs in Greater London, it was always going to be something of a time-consuming task to get the noise complaints data via Freedom of Information (FOI) requests. However, we were pleasantly surprised by the London Local Authorities efficiencies. The vast majority of data came backin under the 3 week FOI deadline. Click here to see the Infographic. As the statistics...
Is a background noise survey worth doing? - Case Study
As a plant owner or designer you will logically try to keep construction costs down wherever possible. So noise control features can easily be sidelined as an “optional extra” to be added later if the need arises. You might also be confident a new industrial plant will comply with all regulations on completion, but that doesn’t mean a future neighbour won’t complain about noise – whether real or perceived! Undertaking a pre-construction background noise survey can therefor offer...
Industrial hygiene assessment of a large chemical manufacturing facility – Case Study
Challenge: Antea®Group was contracted by a large international chemical manufacturing organization to provide a plant-wide industrial hygiene assessment of chemical and noise exposures within their facility. The overall objective of the project was to evaluate worker exposures, compare results as to compliance with applicable regulations and guidelines, and to provide recommendations for appropriate corrective actions. Solution: Antea Group completed a plant wide industrial hygiene assessment of a 24-hour...
British American Tobacco Survey – Case Study
Project Highlights Envirochem carried out environmental perimeter monitoring during the demolition of warehouses at the British American Tobacco site in Southampton. Airborne Dust, noise and vibration levels were all monitored using state of the art equipment. Project Description Three monitoring stations were identified in conjunction with the client and the Environmental Health officer (EHO). Dust, noise and vibration limits set by the EHO were programmed into the instruments, allowing text alerts to be sent...
Former Ordnance Survey (2) – Case Study
Project Highlights Envirochem carried out environmental perimeter monitoring during the demolition of the former Ordnance survey site in Southampton. Airborne Dust, noise and vibration levels were all monitored using state of the art equipment. Project Description Three monitoring stations were identified in conjunction with the client and the Environmental Health officer (EHO). Monitoring instruments were installed in these locations by our environmental consultants, with the equipment going live on the same...