Abstract: Methods, systems and media for facilitating compression over a metered data connection are provided. In some embodiments, the methods comprise: detecting a new wireless network connection; determining that the new connection is metered; sending, via a proxy server, requests for content to a content server using the metered data connection; receiving, via the proxy server, content from the content server compressed by the proxy server using the metered data connection; detecting a second new wireless network connection; determining that the second new wireless network connection is not a metered data connection; causing the proxy server to inhibit compression of content sent to the user device in response to determining that the second new wireless network connection is not a metered data connection.

Abstract: Methods, systems and media for facilitating compression over a metered data connection are provided. In some embodiments, the methods comprise: detecting a new wireless network connection; determining that the new connection is metered; sending, via a proxy server, requests for content to a content server using the metered data connection; receiving, via the proxy server, content from the content server compressed by the proxy server using the metered data connection; detecting a second new wireless network connection; determining that the second new wireless network connection is not a metered data connection; causing the proxy server to inhibit compression of content sent to the user device in response to determining that the second new wireless network connection is not a metered data connection.

Abstract: Methods, systems and media for secure connection management are provided. In some embodiments, methods for secure connection management are provided, the methods comprising: detecting, using a hardware processor, a new network connection; determining that the new network connection is not a secure connection; establishing a virtual private network connection in response to determining that the new network connection is not secure; and upon establishing the virtual private network connection, indicating to a user that the virtual private connection is established.

Abstract: A linear axis spectral analysis system is enclosed. The spectral analysis system utilizes a prism-volume holographic transmission grating-prism combination to achieve a linear axis between input and detector. This design, when held with low thermal expansion materials, is extremely insensitive to temperature and vibration, allowing for enhanced accuracy without the need of temperature control. Further, the spectral analysis system provides the ability for extreme compactness.

Abstract: A compact dispersive near-IR Raman spectrometer is disclosed. The Raman spectrometer consists of a diode pumped solid state (DPSS) laser emitting light at 1064 nm and an InGaAs diode array detector. The DPSS laser is used as an excitation source for stimulating Raman scattering of the sample being analyzed. The Raman signal is collected and filtered to remove the DPSS laser Rayleigh scatter. The collected and filtered Raman signal is dispersed using a volume holographic grating. The dispersed Raman signal is detected using a linear InGaAs diode array detector that is sensitive to light in the wavelength region 900-1700 nm. The dispersive near-IR Raman spectrometer is rugged and compact and enables the collection of high signal-to-noise Raman spectra with high wavelength stability and without the presence of interfering fluorescent backgrounds.