Dicke Coherent Narrowing in Two-Photon and Raman Spectroscopy of Thin Vapour Cells

The principle of coherent Dicke narrowing in a thin vapour cell, in which sub-Doppler spectral lineshapes are observed under a normal irradiation for a l/2 thickness, is generalized to two-photon spectroscopy. Only the sum of the two wave vectors must be normal to the cell, making the two-photon scheme highly versatile. A comparison is provided between the Dicke narrowing with copropagating fields, and the residual Doppler-broadening occurring with counterpropagating geometries. The experimental feasibility is discussed on the basis of a first observation of a two-photon resonance in a 300 nm-thick Cs cell. Extension to the Raman situation is finally considered

The Contribution of Household Members to Fisherman Income in Pasar II Natal Village Natal Districts Mandailing Natal Regency North Sumatra Province

This study was conducted in May 2016 in Pasar II Natal Village Natal Districts Mandailing Natal Regency North Sumatra Province. The purpose of the research are to identify the types of business of fisherman household members, to analyze the contribution of household members fisherman and the analyze business profitability cultivated by household members fisherman. The research method was used by survey and the determine of respondents by census. The results of this research indicate that activities performed by fisherman household members in Pasar II Natal Village on the fisheries sector and non fisheries. The contributions of household members fisherman given by the fishermen themselves is relatively high at 69.84%, from the fisherman\u27s wife with a contribution of 14.46% which is low, as well as the children of fishermen with a contribution 25.7% were classified as low. Value business profitability cultivated by household members fisherman both wives and children of fishermen all > 25%, so that the business can be said is already profitable, efficient and feasible to be developed

MEMS-Based Terahertz Detectors

A MEMS based novel THz detector structure is designed and realized by micro fabrication. The detector is then characterized to extract its mechanical performance. Operating in 1-5 THz band, the detector has a pixel size of 200 μm × 200 μm. Bimaterial suspension legs consist of Parylene-C and titanium, the pair of which provides a high mismatch in coefficients of thermal expansion. The pixel is a suspended Parylene-C structure having a 200 nm-thick titanium metallization. Operation principle relies on conversion of absorbed THz radiation into heat energy on the pixel. This increases the temperature of the free-standing microstructure that is thermally isolated from the substrate. The increase in temperature induces mechanical deflection due to bimaterial springs. The detector is designed to deliver a noise equivalent temperature difference (NETD) less than 500 mK and a refresh rate of 30 Hz

SiGe HBT X-Band LNAs for Ultra-Low-Noise Cryogenic Receivers

We report results on the cryogenic operation of two different monolithic X-band silicon-germanium (SiGe) heterojunction bipolar transistor low noise amplifiers (LNAs) implemented in a commercially-available 130 nm SiGe BiCMOS platform. These SiGe LNAs exhibit a dramatic reduction in noise temperature with cooling, yielding Teff of less than 21 K (0.3 dB noise figure) across X-band at a 15 K operating temperature. To the authors’ knowledge, these SiGe LNAs exhibit the lowest broadband noise of any Si-based LNA reported to date

The Analysis of Business Enlargement Gourami and Catfish in Rejosari Village Tenayan Raya Subsdistrict Pekanbaru City Riau Province

This study was conducted in April 2017 which located in Rejosari Village Tenayan Raya Subsdistrict Pekanbaru City Riau Province. This study was aimed to knowed business investment, large profit and analyze business feasibility cultivation gourami and catfish in in Rejosari Village Tenayan Raya Subsdistrict Pekanbaru City Riau Province. Methods used in this research is a method of survey with 4 respondents determinatied by the census. The result showed that business investment enlargement catfish IDR 27.567.000,- to IDR 896.952.488,- investment with enlargement gourami IDR 19.824.000,- to IDR 172.764.000,. Business profits enlargement catfish IDR 4.396.210,- to IDR 259.965.674,- per harvest while their profits for enlargement gourami IDR 3.965.330,- per harvest to IDR 74.198.167,- per harvest. Business enlargement catfish and gourami done worth to continue, this is consistent with the criteria of investment FCR, FRR, PPC

The Influence of Mining Sand Toward Income and Livelihoods of Fishermen in Petapahan Village Tapung Subsdistrict Kampar District Riau Province

This study was conducted in February 2017 which located in Petapahan Village Tapung Subsdistrict Kampar District Riau Privince. This study was aimed to knowledge the changing income from fish catch before and after the introduction of sand mining and analyze the influence of factors age, education and asset ownership on changes in livelihoods fishermen. Methods used in this research is a method of survey with 50 respondents determinatied by the census. There is a decrease in revenue from fishing with average IDR 2.154.000,- per month (68 %) after activity the introduction of mining sand, namely from IDR 3.268.667,- per month to IDR 1.114.667,- per month and significant statistically Factors that effecting a change of livelihoods fishermen significantly are age of fishermen and asset ownership, but the education level not significant

Multimedia File Signature Analysis for Smartphone Forensics

© 2016 IEEE. With the emergence of smartphones and the widespread use of social media services, distribution of multimedia files over the Internet, and using mobile phones, has increased exponentially over the past few years. A significant number of cybercrimes pertain to illicit possession, modification, and distribution of multimedia files. The use of smartphones for this purpose makes these mobile phones rich sources of evidence. Therefore, it is crucial for forensic examiners to have the capability of recovering, analyzing, and authenticating the source of multimedia contents stored on these devices. This paper focuses on the analysis of multimedia files created on the most popular smartphones in order to ascertain the source and examine whether the files are original or edited through these devices. The popular smartphones brands analyzed in this paper include iPhone 5, iPhone 6, Blackberry Z10, Samsung Galaxy Note 3, Nokia Lumia 930, and Lenovo A536. Experimental results on all these brands are also presented

Culinary Agrowisata Attractiveness at Restourant Palanta Lubuak Surian Guguak Sub District Lima Puluh Kota District West Sumatera Province

This research on culinary attractive is held on 27 February until 13 March 2017 in Lima Puluh Kota Regency West Sumatera. This study aims to determine the general description of culinary-specific agro-tourism and the attractiveness of culinary agro tourism as well as culinary-specific variations of fishery commodities. The method used is survey method by observation, documentation and interview. The results of this study indicate that the attractiveness of culinary agrowisata at the restourant Palanta Lubuak Surian is a typical eel minang cooking. Palanta Lubuak Surian restourant is one of the popular restourants in Lima Puluh Kota District. Restourant Palanta Lubuak Surian has beautiful natural panorama so many visitors who come to the restourant. In addition to beautiful natural panorama at the restourant Palanta Lubuak Surian good service, unique and interesting building form and access road smoothly / not difficult to visit. Restourant Palata Lubuak Surian also has a variety of menu such as fried fish, fish curry, vegetables, fried rubik, fried eggplant, jengkol curry and sambal lado tanak

Ornamental Fish Marketing and Aquarium Equipment in Pekanbaru Riau Province

Research about marketing of ornamental fish and aquarium supplies are carried out from August to September 2015 in the city of Pekanbaru in Riau province. This study aims to determine the area of origin of ornamental fish, fish species were seeded and problems in marketing of ornamental fish and aquarium. The method used is a survey method to determine the respondents conducted by proportional random sampling. The number of respondents who were taken as many as 10 businesses ornamental fish and aquarium from 8 subdistricts.Results of this study indicate that based on where his life ornamental fish marketed in Pekanbaru from Medan (North Sumatra, Bogor (West Java) and Pekanbaru for freshwater species, while kind of seawater derived from Padang (West Sumatra) and Sidoarjo (Jawa East). Ornamental fish species are seeded based on several criteria are Arowana fish and Goldfish fresh water and fish Nemo for this type of seawater. The obstacles faced by entrepreneurs ornamental fish are fish that is seasonal, non-fulfillment of consumer demand because of unavailability of products