A Comparative Study of a Low Doppler Shift in a Carrier Tracking Loop for GPS

This paper compares a carrier tracking scenario when a received Global Positioning System (GPS) signal has low Doppler frequency. It is shown that if the Numerically Controlled Oscillator (NCO) is quantized to 1 bit, the carrier tracking loop is unable to keep track of the incoming signal which leaves the tracking loop oscillating between the upper and lower bounds of the tracking loop bandwidth. One way of overcoming this problem is presented and compared with another existing solution, found in the literature, providing comparative results from the use of real-recorded off the air GPS L1 signals. Results show that the proposed method performs better tracking performance compared with the existing solution which it requires much less hardware complexity.

Parallel Architecture Prototype for 60 GHz High Data Rate Wireless Single Carrier Receiver

Nowadays a huge attention of the academia and research teams is attracted to the potential of the usage of the 60 GHz frequency band in the wireless communications. The use of the 60GHz frequency band offers great possibilities for wide variety of applications that are yet to be implemented. These applications also imply huge implementation challenges. Such example is building a high data rate transceiver which at the same time would have very low power consumption. In this paper we present a prototype of Single Carrier -SC transceiver system, illustrating a brief overview of the baseband design, emphasizing the most important decisions that need to be done. A brief overview of the possible approaches when implementing the equalizer, as the most complex module in the SC transceiver, is also presented. The main focus of this paper is to suggest a parallel architecture for the receiver in a Single Carrier communication system. This would provide higher data rates that the communication system canachieve, for a price of higher power consumption. The suggested architecture of such receiver is illustrated in this paper,giving the results of its implementation in comparison with its corresponding serial implementation.

Assessment of the VoIP Transmission Quality over Digital Power Line Carrier Channels

This article is devoted to the research of VoIP transmission quality over Digital Power Line Carrier channels. Assessment of quality transmission is performed using E-model. Paper considers the possibility of joint using of Digital Power Line carrier equipment with different architecture in one network. As a result of the research, the rule for constructing of multi-segment Digital Power Line Carrier channels was formulated. This rule allows minimizing the transmission delay and saving frequency resources of high voltage Power Line Carrier range.

The Research of Increase of Channel Efficiency for IP Traffic Transmission over Digital Power Line Carrier Channels

This article is devoted to the research of channel efficiency for IP-traffic transmission over Digital Power Line Carrier channels. The application of serial WAN connections and header compression as methods to increase channel efficiency is considered. According to the results of the research an effective solution for network traffic transmission in DPLC networks was proposed.

Resolución N° 17 ¿Cuales son los lineamientos que considera la Cámara de Comercio en el estudio de actas contentivas de la renuncia y aceptación del cargo de miembro de Junta por el órgano máximo de la sociedad?

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Resolución No. 025 del 26 de febrero de 2014 ¿Existe un control de legalidad a cargo de la Cámara de comercio sobre la verificación o reconocimiento de la titularidad de quienes detentan acciones en una Sociedad Anónima?

La Cámara de Comercio de Bogotá inscribió el acta No. AA-021 de la asamblea de accionistas de la SOCIEDAD DE TELECOMUNICACIONES, INGENIERÍA MERCADEO TELEVISIÓN POR CABLE Y SERVICIOS SAS, en la cual se hizo nombramiento de gerente general, gerente ejecutivo y presidente de la asamblea de accionistas.

Comparative study of bovine heart and bacillus subtilis cytochrome c oxidase vesicles and the influence of bulk pH on cytochrome c oxidase components

Studies on the steady state behavior of soluble cytochrome c oxidase are extensive. These studies have examined the influence of ionic strength and pH and may provide answers to questions such as the link between proton translocation and charge separation. The present study examined the influence of external bulk pH on ApH formation, biphasic kinetics, and steady state reduction of cytochromes c and a of cytochrome c oxidase in proteoliposomes. Bulk pH has an appreciable effect on ApH formation and steady state reduction levels of cytochromes c and 8. Bulk pH affected total Vmax and Km at the low affinity binding site of cytochrome c. This study also examined the influence of bovine serum albumin and free fatty acids on proton pumping activity in bovine heart proteoliposomes. Proton pumping activity decreased after treatment with BSA, and was subsequently reinstated after further treatment with FFA. Much study in the superfamily of haem/copper oxidases has recently been devoted to the bacterial oxidases. The present study has examined some protein composition characteristics and bioenergetic features of Bacillus subtilis cytochrome caa3 oxidase. Results provide evidence for the structural composition of the enzyme in relation to the covalently bound cytochrome c to the oxidas~. Bioenergetically, caa3 COV showed appreciable proton pumping activity. Steady state analysis of the caa3 COV showed significantly different cytochrome c and a reduction characteristics compared to the bovine enzyme.

The Welland Canals Foundation, Honourable William Hamilton Merritt and the St. Catharines Historical Society and Museum, 1971-1990, n.d.

‘The Father of Canadian Transportation’ is a term commonly associated with William Hamilton Merritt. Although he is most known for being one of the driving forces behind the building of the first Welland Canal, he was many things throughout his life; a soldier, merchant, promoter, entrepreneur and politician to name a few. Born on July 3, 1793 at Bedford, Westchester County, N.Y. to Thomas Merritt and Mary Hamilton, Merritt’s family relocated to Canada shortly after in 1796. The move came after Merritt’s father petitioned John Graves Simcoe for land in Upper Canada after serving under him in the Queen’s Rangers during the American Revolution. The family quickly settled into their life at Twelve Mile Creek in St. Catharines. Merritt’s father became sheriff of Lincoln County in 1803 while Merritt began his education in mathematics and surveying. After some brief travel and further education Merritt returned to Lincoln County, in 1809 to help farm his father’s land and open a general store. While a farmer and merchant, Merritt turned his attention to military endeavours. A short time after being commissioned as a Lieutenant in the Lincoln militia, the War of 1812 broke out. Fulfilling his duty, Merritt fought in the Battle of Queenston Heights in October of 1812, and numerous small battles until the Battle of Lundy’s Lane in July 1814. It was here that Merritt was captured and held in Cheshire, Massachusetts until the war ended. Arriving back in the St. Catharines area upon his release, Merritt returned to being a merchant, as well as becoming a surveyor and mill owner. Some historians hypothesize that the need to draw water to his mill was how the idea of the Welland Canals was born. Beginning with a plan to connect the Welland River with the Twelve mile creek quickly developed into a connection between the Lakes Erie and Ontario. Its main purpose was to improve the St. Lawrence transportation system and provide a convenient way to transport goods without having to go through the Niagara Falls portage. The plan was set in motion in 1818, but most living in Queenston and Niagara were not happy with it as it would drive business away from them. Along with the opposition came financial and political restraints. Despite these factors Merritt pushed on and the Welland Canal Company was chartered by the Upper Canadian Assembly on January 19, 1824. The first sod was turned on November 30, 1824 almost a year after the initial chartering. Many difficulties arose during the building of the canal including financial, physical, and geographic restrictions. Despite the difficulties two schooners passed through the canal on November 30, 1829. Throughout the next four years continual work was done on the canal as it expended and was modified to better accommodate large ships. After his canal was underway Merritt took a more active role in the political arena, where he served in various positions throughout Upper Canada. In 1851, Merritt withdrew from the Executive Council for numerous reasons, one of which being that pubic interest had diverted from the canals to railways. Merritt tried his hand at other public works outside transportation and trade. He looked into building a lunatic asylum, worked on behalf of War of 1812 veterans, aided in building Brock’s monument, established schools, aided refugee slaves from the U.S. and tried to establish a National Archives among many other feats. He was described by some as having “policy too liberal – conceptions too vast – views too comprehensive to be comprehensible by all”, but he still made a great difference in the society in which he lived. After his great contributions, Merritt died aboard a ship in the Cornwall canal on July 5, 1862. Dictionary of Canadian Biography Online http://www.biographi.ca/EN/ShowBio.asp?BioId=38719 retrieved October 2006 Today numerous groups carry on the legacy of Merritt and the canals both in the past and present. One such group is the Welland Canals Foundation. They describe themselves as: “. . . a volunteer organization which strives to promote the importance of the present and past Welland Canals, and to preserve their history and heritage. The Foundation began in 1980 and carries on events like William Hamilton Merritt Day. The group has strongly supported the Welland Canals Parkway initiative and numerous other activities”. The Welland Canals Foundation does not work alone. They have help from other local groups such as the St. Catharines Historical Society. The Society’s main objective is to increase knowledge and appreciation of the historical aspects of St. Catharines and vicinity, such as the Welland Canals. http://www.niagara.com/~dmdorey/hssc/dec2000.html - retrieved Oct. 2006 http://www.niagara.com/~dmdorey/hssc/feb2000.html - retrieved Oct. 2006

The Columbian Newspaper vol. IV no. 1105- June 12, 1813

The "Columbian" was established by Mr. Holt in 1808 as an "organ of the Clintonians" (Journalism in the United States, from 1690-1872 By Frederic Hudson) and a replacement to the "Citizen". It was a passionate Democratic paper that supported both Jefferson and Madison. Holt later sold the "Columbian" to Alden Spooner, who published the Long Island "Star". The Columbian ceased in 1821. This issue includes the following War of 1812 topics: Page 2: copies of letters from U.S. Gen. H. Dearborn describing the U.S. attack on Ft. George 27 May 1813; letter from Gen. H. Dearborn describing U.S. pursuit of British troops at Beaver Dams and the U.S. capture of Fort Erie; list of U.S. killed and wounded in Commodore Isaac Chauncey's squadron in attack on York 27 April, 1813; list of killed and wounded in Commodore Isaac Chauncey's squadron in attack on Ft. George 27 May 1813; abstract of the cartel for the exchange of prisoners of war between Great Britain and the United States; mention of troop movements through New York on their way to the battle front; list of persons killed or lost on the privateer Saratoga; Page 3: account of the loss of the U.S. war ships the Growler and Eagle to the British; news from Quebec and Kingston of troop movements; U.S. ship Syren unsuccessfully pursues British ship Herald; account of a U.S. cargo ship being captured by a British military ship; account of U.S. ship Siro capturing British ship Loyal Sam; report from Halifax of recent British troop and ship movements; list of recent troop enrollments in various states; report of British troop build up in Kingston;

Independent Chronicle Vol. XLVI No. 3470- July 14, 1814

A semi-weekly paper that was published from 1801 to 1817. It was previously called the Independent chronicle and the universal advertiser, and was later the Independent chronicle and Boston patriot (Semiweekly). Publishers were Abijah Adams and Ebenezer Rhoades. Topics of interest in this issue include: Page 1: report of Independence Day celebration including multiple toasts to the military; Page 2: report of South Carolina militia marching home; report of U.S. schooner Alligator being lost to a tornado in Port Royal; report of 10,000 militia and 2,000 regular Army troops to be used in defense of the District of Columbia and vicinity; report U.S. is to try to raise 100,000 militia for defense; news of British deserters providing information to the U.S.; report of skirmishes along the U.S. coast; statement from U.S. Navy Capt. David Porter stating he had taken possession of Sir Henry Martin's Island; report of British troops burning a militia barracks in Lewiston, N.Y.; 4 accounts of the battle of Chippewa and the taking of Fort Erie; statement from Maj. Gen. Brown in praise of his troops in the battle of Chippewa; copy of General Brown's orders to attack at Fort Erie; essay arguing against U.S. citizens boarding enemy ships; report of peace treaty rumours; Page 3: account of Capt. Porter's capture and subsequent escape from the British; list of American prisoners held on the British ship Nymph; report of British cargo ship captured by U.S. war ship; Proclamation from James Madison pardoning military deserters if they return to military service; announcement to officers and soldiers in the military offering reward for the return of military deserters; Page 4: 2 reward advertisements for return of military deserters;