In philosophy and logic, an argument is an attempt to persuade someone of something, by giving reasons or evidence for accepting a particular conclusion.[1][2] The general structure of an argument in a natural language is that of premises (typically in the form of propositions, statements or sentences) in support of a claim: the conclusion.[3][4][5] Many arguments can also be formulated in a formal language. An argument in a formal language shows the logical form of the natural language arguments obtained by its interpretations.
In a typical deductive argument, the premises are meant to provide a guarantee of the truth of the conclusion, while in an inductive argument, they are thought to provide reasons supporting the conclusion's probable truth.[6] The standards for evaluating other kinds of arguments may rest on different or additional criteria than truth, however, such as the persuasiveness of so-called "indispensability claims" in transcendental arguments[7] or even the disclosure of new possibilities for thinking and acting.[8]
The criteria used in evaluating arguments and their forms of reasoning are studied in logic.[9] Ways of formulating arguments effectively are studied in rhetoric (see also: Argumentation theory).
Tuesday, November 27, 2012
Monday, November 26, 2012
Moundville Telephone Selects ADTRAN adds Moundville Telephone to customer list
ADTRAN Inc., (NASDAQ:ADTN) says that Moundville Telephone Co., an independent service provider serving West-Central Alabama, will use a range of ADTRAN broadband equipment, including its Total Access 5000 Multi-Service Access and Aggregation Platform (MSAP), to enhance its triple-play and high-speed Internet access service delivery. Moundville will use the Total Access 5000 to expand both its fiber-to-the-home (FTTH) and DSL infrastructure. The service provider also will leverage the platform for mobile backhaul applications.
ADTRAN says that Moundville selected the Total Access 5000 for its flexibility and its ability to support an evolution from legacy to next-generation services. The platform’s pseudowire aggregation feature also will aid in the support of mobile backhaul applications, the systems supplier adds.
“The Total Access 5000 offers outstanding efficiency and scalability,” said Larry Taylor, general manager, Moundville Telephone. “As one of the most flexible platforms on the market, we will be able to quickly and continuously redefine our access architecture to meet the demands of our customers for a wide variety of applications such as FTTH, broadband, and mobile backhaul.”
ADTRAN says that Moundville selected the Total Access 5000 for its flexibility and its ability to support an evolution from legacy to next-generation services. The platform’s pseudowire aggregation feature also will aid in the support of mobile backhaul applications, the systems supplier adds.
“The Total Access 5000 offers outstanding efficiency and scalability,” said Larry Taylor, general manager, Moundville Telephone. “As one of the most flexible platforms on the market, we will be able to quickly and continuously redefine our access architecture to meet the demands of our customers for a wide variety of applications such as FTTH, broadband, and mobile backhaul.”
Sunday, November 25, 2012
Week News Abstract For SFP Series in 10GTEK:Subscription
World of Warcraft requires a subscription fee to be paid to allow continued play, with options to pay in one month, three month, or six month blocks, although timecards of varying length are available both online and from traditional retailers.[45] Expansion packs are available online, and are also available from traditional retailers. As the game client is the same regardless of the version of World of Warcraft the user owns, the option to purchase expansions online was added as it allowed for a quick upgrade. World of Warcraft has 10.3 million subscribers as of November 2011.[46]
World of Warcraft is available as a free Starter Edition, which is free to play for an unlimited amount of time. Starter Edition characters are unable to gain experience after reaching level 20, and there are other restrictions in effect for Starter Edition accounts, including the inability to trade, use public chat channels, join guilds, or amass more than ten gold.
World of Warcraft is available as a free Starter Edition, which is free to play for an unlimited amount of time. Starter Edition characters are unable to gain experience after reaching level 20, and there are other restrictions in effect for Starter Edition accounts, including the inability to trade, use public chat channels, join guilds, or amass more than ten gold.
Saturday, November 24, 2012
Regulation of blood flow in the skin
Blood flow in the cutaneous resistance vessels and the subcutaneous venous plexus are both neurally and locally regulated. However, there are some important differences. One is, that cutaneous resistance vessels exhibit a basal tone independently of innervation in reaction to passive stretch induced by blood pressure (Rowell. 1974). This intrinsic basal tone is normally absent in cutaneous capacitance vessels .
Along with this basal tone, all resistance vessels in the skin receive a tonic outflow from sympathetic vasoconstrictor fibers. This tonic outflow is inversely associated with body temperature. Vasodilation therefore occurs passively in resistance vessels the (alpha-adrenergic) vasoconstrictor tone decreases. Furthermore, an active neurogenic vasodilation must be assumed in the human skin. However, it is not clear if this vasodilation is mediated by specific vasodilator nerve fibers or if neuro-humoral effects are involved that are associated with the sympathetic cholinergic activation of sweat glands (Rowell. 1993; Lembeck & Holzbauer. 1988). Although some experiments lead to the conclusion that sympathetic outflow is involved in facial vasodilation[2] 40 years of research have not clarified the mechanism behind active vasodilation.
Cutaneous veins also are richly innervated with sympathetic vasoconstrictor fibers. The effect of activation of the outflow of these fibers is reduced by local cooling. In addition, cutaneous veins are temporarily reactive to various other stimuli. Each of the following can cause remarkably intense venoconstriction without obvious value to the organism: emotional stimuli (e.g. startle, apprehension, discomfort), hyperventilation, deep inspiration, and the Valsalva maneuver (Rowell. 1974).
In resistance vessels, increased pressure mainly increases flow per time unit. In the cutaneous venous plexus with its generally slow flow rate, pressure mainly influences volume. Because of its enormous volume variability and its large potential capacity the venous plexus is believed to determine skin color (Rowell. 1993; Mellander, Andersson, Afzelius, & Hellstrand. 1982; Rowell. 1974). Since pronounced blushing is also characterized by a deep reddening of the skin, vasodilation of the venous plexus is probably the physical mechanism underlying it. Emotional blushing is only visible or apparent in a specific area called the blush region. The area is restricted to the face, ears, neck, and in some rare cases the upper body. Two main hypotheses to explain this regional restriction have been proposed. One is that vasodilation takes place throughout the entire skin of the body but is only visible in the blush region due to special anatomical structure of that region. The second is that a specific form of vasodilation takes place exclusively in the blush region. It is likely, that a combination of these two factors accounts for blushing.
Along with this basal tone, all resistance vessels in the skin receive a tonic outflow from sympathetic vasoconstrictor fibers. This tonic outflow is inversely associated with body temperature. Vasodilation therefore occurs passively in resistance vessels the (alpha-adrenergic) vasoconstrictor tone decreases. Furthermore, an active neurogenic vasodilation must be assumed in the human skin. However, it is not clear if this vasodilation is mediated by specific vasodilator nerve fibers or if neuro-humoral effects are involved that are associated with the sympathetic cholinergic activation of sweat glands (Rowell. 1993; Lembeck & Holzbauer. 1988). Although some experiments lead to the conclusion that sympathetic outflow is involved in facial vasodilation[2] 40 years of research have not clarified the mechanism behind active vasodilation.
Cutaneous veins also are richly innervated with sympathetic vasoconstrictor fibers. The effect of activation of the outflow of these fibers is reduced by local cooling. In addition, cutaneous veins are temporarily reactive to various other stimuli. Each of the following can cause remarkably intense venoconstriction without obvious value to the organism: emotional stimuli (e.g. startle, apprehension, discomfort), hyperventilation, deep inspiration, and the Valsalva maneuver (Rowell. 1974).
In resistance vessels, increased pressure mainly increases flow per time unit. In the cutaneous venous plexus with its generally slow flow rate, pressure mainly influences volume. Because of its enormous volume variability and its large potential capacity the venous plexus is believed to determine skin color (Rowell. 1993; Mellander, Andersson, Afzelius, & Hellstrand. 1982; Rowell. 1974). Since pronounced blushing is also characterized by a deep reddening of the skin, vasodilation of the venous plexus is probably the physical mechanism underlying it. Emotional blushing is only visible or apparent in a specific area called the blush region. The area is restricted to the face, ears, neck, and in some rare cases the upper body. Two main hypotheses to explain this regional restriction have been proposed. One is that vasodilation takes place throughout the entire skin of the body but is only visible in the blush region due to special anatomical structure of that region. The second is that a specific form of vasodilation takes place exclusively in the blush region. It is likely, that a combination of these two factors accounts for blushing.
Friday, November 23, 2012
Regulation of blood flow in the skin
Blood flow in the cutaneous resistance vessels and the subcutaneous venous plexus are both neurally and locally regulated. However, there are some important differences. One is, that cutaneous resistance vessels exhibit a basal tone independently of innervation in reaction to passive stretch induced by blood pressure (Rowell. 1974). This intrinsic basal tone is normally absent in cutaneous capacitance vessels .
Along with this basal tone, all resistance vessels in the skin receive a tonic outflow from sympathetic vasoconstrictor fibers. This tonic outflow is inversely associated with body temperature. Vasodilation therefore occurs passively in resistance vessels the (alpha-adrenergic) vasoconstrictor tone decreases. Furthermore, an active neurogenic vasodilation must be assumed in the human skin. However, it is not clear if this vasodilation is mediated by specific vasodilator nerve fibers or if neuro-humoral effects are involved that are associated with the sympathetic cholinergic activation of sweat glands (Rowell. 1993; Lembeck & Holzbauer. 1988). Although some experiments lead to the conclusion that sympathetic outflow is involved in facial vasodilation[2] 40 years of research have not clarified the mechanism behind active vasodilation.
Cutaneous veins also are richly innervated with sympathetic vasoconstrictor fibers. The effect of activation of the outflow of these fibers is reduced by local cooling. In addition, cutaneous veins are temporarily reactive to various other stimuli. Each of the following can cause remarkably intense venoconstriction without obvious value to the organism: emotional stimuli (e.g. startle, apprehension, discomfort), hyperventilation, deep inspiration, and the Valsalva maneuver (Rowell. 1974).
In resistance vessels, increased pressure mainly increases flow per time unit. In the cutaneous venous plexus with its generally slow flow rate, pressure mainly influences volume. Because of its enormous volume variability and its large potential capacity the venous plexus is believed to determine skin color (Rowell. 1993; Mellander, Andersson, Afzelius, & Hellstrand. 1982; Rowell. 1974). Since pronounced blushing is also characterized by a deep reddening of the skin, vasodilation of the venous plexus is probably the physical mechanism underlying it. Emotional blushing is only visible or apparent in a specific area called the blush region. The area is restricted to the face, ears, neck, and in some rare cases the upper body. Two main hypotheses to explain this regional restriction have been proposed. One is that vasodilation takes place throughout the entire skin of the body but is only visible in the blush region due to special anatomical structure of that region. The second is that a specific form of vasodilation takes place exclusively in the blush region. It is likely, that a combination of these two factors accounts for blushing.
Along with this basal tone, all resistance vessels in the skin receive a tonic outflow from sympathetic vasoconstrictor fibers. This tonic outflow is inversely associated with body temperature. Vasodilation therefore occurs passively in resistance vessels the (alpha-adrenergic) vasoconstrictor tone decreases. Furthermore, an active neurogenic vasodilation must be assumed in the human skin. However, it is not clear if this vasodilation is mediated by specific vasodilator nerve fibers or if neuro-humoral effects are involved that are associated with the sympathetic cholinergic activation of sweat glands (Rowell. 1993; Lembeck & Holzbauer. 1988). Although some experiments lead to the conclusion that sympathetic outflow is involved in facial vasodilation[2] 40 years of research have not clarified the mechanism behind active vasodilation.
Cutaneous veins also are richly innervated with sympathetic vasoconstrictor fibers. The effect of activation of the outflow of these fibers is reduced by local cooling. In addition, cutaneous veins are temporarily reactive to various other stimuli. Each of the following can cause remarkably intense venoconstriction without obvious value to the organism: emotional stimuli (e.g. startle, apprehension, discomfort), hyperventilation, deep inspiration, and the Valsalva maneuver (Rowell. 1974).
In resistance vessels, increased pressure mainly increases flow per time unit. In the cutaneous venous plexus with its generally slow flow rate, pressure mainly influences volume. Because of its enormous volume variability and its large potential capacity the venous plexus is believed to determine skin color (Rowell. 1993; Mellander, Andersson, Afzelius, & Hellstrand. 1982; Rowell. 1974). Since pronounced blushing is also characterized by a deep reddening of the skin, vasodilation of the venous plexus is probably the physical mechanism underlying it. Emotional blushing is only visible or apparent in a specific area called the blush region. The area is restricted to the face, ears, neck, and in some rare cases the upper body. Two main hypotheses to explain this regional restriction have been proposed. One is that vasodilation takes place throughout the entire skin of the body but is only visible in the blush region due to special anatomical structure of that region. The second is that a specific form of vasodilation takes place exclusively in the blush region. It is likely, that a combination of these two factors accounts for blushing.
Thursday, November 22, 2012
Macomnet brings dark fiber pairs to IXcellerate data center
Macomnet, a joint venture of Moscow Metro and Andrew Corp., says it has delivered 64 dark fiber pairs to IXcellerate, the Russian Alliance Member of the International Data Centre Group. The delivery is part of Phase I construction of IXcellerate’s Moscow 1 Data Center. This phase continues after completion of a temporary “meet-me-room” and steel works.
IXcellerate is a data center project founded by Guy Willner, founder and former CEO of IXEurope and former president Europe for Equinix Inc., and Cliff Gauntlett, former senior vice president of Golden Telecom. The project seeks to build and operate a 6,200-sq-m carrier-neutral data center in Moscow on a 15,000-sq-m campus. The construction process has three phases, with the first 1000-sq-m scheduled to be operational in the fourth quarter of this year.
Macomnet says the dark fibers will provide IXcellerate with the capacity and flexibility to accommodate future growth, as well as improve reliability and performance.
Wednesday, November 21, 2012
Zayo Group moves towards full ownership of USCarrier
Zayo Group is once again in acquisition mode, this time announcing that it has agreed to acquire the half of USCarrier Telecom, LLC it doesn’t already own. Zayo will pay $13.5 million in cash to complete the acquisition.
Zayo initially acquired approximately 50% of the company when it bought American Fiber Systems in October 2010 (see "Zayo Group to acquire American Fiber Systems").
USCarrier is a regional fiber-based bandwidth services provider that operates in Georgia, Florida, Alabama, and Tennessee. Its 3,700-mile fiber network connects cities such as Atlanta, Jacksonville, Tallahassee, Nashville, and Chattanooga, as well as 40 smaller cities in the Southeast U.S. The company offers Ethernet and wavelength services.
"Extending the reach of Zayo's network with USCarrier's footprint allows us to offer broader solutions to our customers as well as deliver end-to-end national and international connectivity to these markets," says Glenn Russo, executive vice president for corporate strategy and development for Zayo Group. "The transport services that USCarrier provides fit well with Zayo's focus on core high-bandwidth services."
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