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5badb63fbb8f1ca8cb99a144a6798be404c918f1
proof: we want to prove that any solution
proof: we want to prove that any solution f: v → w {\displaystyle f\colon v\to w} to cauchy’s functional equation, f (x + y) = f (x) + f (y) {\displaystyle f(x+y)=f(x)+f(y)}, satisfies f (q v) = q f (v) {\displaystyle f(qv)=qf(v)} for any q ∈ q {\displaystyle q\in \mathbb {q} } and v ∈ v {\displaystyle v\in v}. let v ∈...
wikipedia
af7bd9dbd1b6c2655e5bc20fd9f1d23c6e746276
a simple argument, involving only elementary algebra, demonstrates
a simple argument, involving only elementary algebra, demonstrates that the set of additive maps f: v → w {\displaystyle f\colon v\to w}, where v, w {\displaystyle v,w} are vector spaces over an extension field of q {\displaystyle \mathbb {q} }, is identical to the set of q {\displaystyle \mathbb {q} } -linear maps fro...
wikipedia
83737a30a28ef6377086c47d0f87e04265f44e26
this equation is sometimes referred to as cauchy's
this equation is sometimes referred to as cauchy's additive functional equation to distinguish it from cauchy's exponential functional equation f (x + y) = f (x) f (y), {\displaystyle f(x+y)=f(x)f(y),} cauchy's logarithmic functional equation f (x y) = f (x) + f (y), {\displaystyle f(xy)=f(x)+f(y),} and cauchy's multip...
wikipedia
e9b296ddfe78ff70d098158200b94cf7cd13712b
the fifth problem on hilbert's list is a
the fifth problem on hilbert's list is a generalisation of this equation. functions where there exists a real number c {\displaystyle c} such that f (c x) ≠ c f (x) {\displaystyle f(cx)\neq cf(x)} are known as cauchy-hamel functions and are used in dehn-hadwiger invariants which are used in the extension of hilbert's t...
wikipedia
dd5e3452b1bf6a8d037a845bb2a3ec8405f26a91
on the other hand, if no further conditions
on the other hand, if no further conditions are imposed on f, {\displaystyle f,} then (assuming the axiom of choice) there are infinitely many other functions that satisfy the equation. this was proved in 1905 by georg hamel using hamel bases. such functions are sometimes called hamel functions.
wikipedia
fb168bc0dbfc7fbaff120c4fcef78e7480bb5c71
a function f {\displaystyle f} that solves this
a function f {\displaystyle f} that solves this equation is called an additive function. over the rational numbers, it can be shown using elementary algebra that there is a single family of solutions, namely f: x ↦ c x {\displaystyle f\colon x\mapsto cx} for any rational constant c. {\displaystyle c.} over the real num...
wikipedia
dc90c2e7b2f0b9734c2d473bd25984b48a620998
caitra is a translation computer assisted tool, or
caitra is a translation computer assisted tool, or cat, developed by the university of edinburgh. provided from an online platform, caitra is based on ajax web.2 technologies and the moses decoder. the web page of the tool is implemented with ruby on rails, an open source web framework, and c++. caitra assists human tr...
wikipedia
07d374aa094ca4619a70c225cfb699b642dd37dd
caitra stores the allotted time in which the
caitra stores the allotted time in which the users accept a prediction or write their own translation.the actions have different importance for the future predictions depending on the user's actions and in the time they need to perform their translation. every action, pause or movement is relevant in order to improve f...
wikipedia
b53224c95352286e98bff506c5af901cb9a35f76
once the text is uploaded, users can see
once the text is uploaded, users can see the result of the machine translation and edit the text based on the predictions. the prediction table is displayed by clicking the edit icon. the text is divided into sentences, which are also divided into smaller units. predictions for these units appear in a box, and the most...
wikipedia
c61227dde3d6d3d5a7a6f971402567d1d4ea7897
the statistical translation system is followed to generate
the statistical translation system is followed to generate the predictions for translation. these predictions are provided in short phrases, according to the statistical phrase-based translation model. this model also makes it easier for the user to read the predictions. the suggestions and user actions are stored in a...
wikipedia
8065ad30d11f0f876ed14e59b9636b568f07edac
the trans-type project (langlais et al., 2000) has
the trans-type project (langlais et al., 2000) has done an investigation about interactive machine translation, consisting of sentence-segment translation aided by a cat tool, which suggests several different options for the translation. the human translators may choose one of them or provide their own translation if t...
wikipedia
91a6661d8a03e6f6834f3a60afcaab362bbe42f8
the user inputs text into the provided text
the user inputs text into the provided text box. caitra processes the text as the user clicks the "upload" icon. the process may last a few minutes, and caitra will find different options for the translation, one of them is taken by default. once the process is finished, translators have multiple options of assistance,...
wikipedia
47336ec16030d561b3a6e5aaced0ef317a23afa2
caitra is programmed with an open-source web framework,
caitra is programmed with an open-source web framework, ruby on rails (thomasand hansson, 2008). the online platform uses ajax-style web 2.0 technologies (raymond, 2007) connected to a mysql database-driven back-end. the machine translation back-end is powered by the statistical sentence-based mt, moses (koehn et al., ...
wikipedia
6cac738dc7f6685c8223926361145c3103e73b95
machine translation (mt) systems are typically used by
machine translation (mt) systems are typically used by readers who do not need a thorough translation and want quick access to the foreign language. professional translators usually require advanced machine translation tools to make their work easier and to give a higher quality translation to their clients.the trans-t...
wikipedia
df8238b1fb85e75dd446e34ae0935c30b0eee679
caitra is a translation computer assisted tool, or
caitra is a translation computer assisted tool, or cat, developed by the university of edinburgh. provided from an online platform, caitra is based on ajax web.2 technologies and the moses decoder. the web page of the tool is implemented with ruby on rails, an open source web framework, and c++.
wikipedia
c416f44a924c5fe8940d8b6a4a802dffe9079149
coordinate-free treatments were the only available approach to
coordinate-free treatments were the only available approach to geometry (and are now known as synthetic geometry) before the development of analytic geometry by descartes. after several centuries of generally coordinate-based exposition, the modern tendency is generally to introduce students to coordinate-free treatmen...
wikipedia
6b2f05b06fba3b273aacd9e4d87f8dbdd0e21d22
nonetheless it may sometimes be too complicated to
nonetheless it may sometimes be too complicated to proceed from a coordinate-free treatment, or a coordinate-free treatment may guarantee uniqueness but not existence of the described object, or a coordinate-free treatment may simply not exist. as an example of the last situation, the mapping v i ↦ v i ∗ {\displaystyle...
wikipedia
d386e41ab230a49c2a5bf67d3d365fdf393d9517
in addition to elegance, coordinate-free treatments are crucial
in addition to elegance, coordinate-free treatments are crucial in certain applications for proving that a given definition is well formulated. for example, for a vector space v {\displaystyle v} with basis v 1,..., v n {\displaystyle v_{1},...,v_{n}}, it may be tempting to construct the dual space v ∗ {\displaystyle v...
wikipedia
294efa8f238e91f5529422f740d0c6ca92317da6
the station consists of one ground level side
the station consists of one ground level side platform and one ground level island platform, connected by a footbridge. the station has a midori no madoguchi staffed ticket office. a jnr class c12 steam locomotive is preserved in the plaza outside the station's east entrance.
wikipedia
42810549c5c6849967cd53541343c9c60ef240de
chino station (茅野駅, chino-eki) is a railway station
chino station (茅野駅, chino-eki) is a railway station on the chūō main line in the city of chino, nagano, japan, operated by east japan railway company (jr east).
wikipedia
c0625b30913265edae0f2bbf5b525b8a2828ce1c
in graph drawing, a clustered planar graph is
in graph drawing, a clustered planar graph is a graph together with a hierarchical clustering on its vertices, such that the graph can be drawn together with a collection of simple closed curves surrounding each cluster with no crossings between graph edges or clusters. the clustering can be described combinatorially b...
wikipedia
9928e06d82fb18be971b79e0f6849a5798b1b413
in a clustered planar drawing, no two edges
in a clustered planar drawing, no two edges may cross each other, no two of the curves representing clusters may cross each other, an edge may cross a cluster boundary only if it connects a vertex inside the cluster to a vertex outside the cluster, and when an edge and cluster boundary cross they may cross only once. a...
wikipedia
e0863e408bc0d3a5f25910df4a4949082d227fc7
the clustering can be described combinatorially by a
the clustering can be described combinatorially by a collection of subsets of the vertices such that, for each two subsets, either both are disjoint or one is contained in the other. it is not required that the clustering be maximal nor that every vertex belong to a cluster.in a clustered planar drawing, no two edges m...
wikipedia
7317891ba7e4f11682fb5c85da8c6b67523b26d5
dvd authoring is the process of creating a
dvd authoring is the process of creating a dvd video capable of playing on a dvd player. dvd authoring software must conform to the specifications set by the dvd forum. dvd authoring is the second step in the process of producing finished dvds. the first step is the creation of the movie and the second, the authoring, ...
wikipedia
38a93deb6519e1a1e78df1e44a3efc95239851ab
sonic developed dvdit, an application that started selling
sonic developed dvdit, an application that started selling below $500. it used only a small part of the whole dvd specification and presented it in a form that didn't require any knowledge of internal dvd structure. later, this form became the building block of many other simplified consumer dvd applications. oem licen...
wikipedia
a024895153593cc9dc2aa6622da38e926c81ba9e
sonic, a united states corporation, has a major
sonic, a united states corporation, has a major share in the market for selling dvd-authoring tools. they previously manufactured computer based audio recording applications, but realized that at some point dvd recorders would become as widely available as cd recorders and that there was no affordable application for t...
wikipedia
c2c789c6315395b4302d0fbce9306f801f999639
daikin, a large japanese air conditioning and refrigeration
daikin, a large japanese air conditioning and refrigeration contracting company, developed scenarist, a high-end dvd authoring software package. daikin has partnered with sonic solutions for development and marketing in the united states. the software was translated to english and has since become the standard for dvd ...
wikipedia
2a4eb631c8c14ac24cab5c0dd2877ddbda344886
many different dvd authoring applications have been created.
many different dvd authoring applications have been created. many high-end authoring applications evolve in-house in companies such as matsushita, philips, sony, and toshiba. such companies strictly forbid the sale of their systems outside each company: internal and dvd laboratories or movie studio partners use them to...
wikipedia
a550c61d632ceeb4d3bbf7c8a6df50570f944699
the dvd specifications were written in japanese and
the dvd specifications were written in japanese and then translated to other languages such as english. this process has resulted in text that can be difficult to interpret, and to this day, many companies interpret various parts of the specifications in different ways. this is the primary reason dvd players from diffe...
wikipedia
873be8e9c42b2786480ccd1cba9c06287968537f
to develop a dvd application (software or hardware),
to develop a dvd application (software or hardware), one must first license the particular book of dvd specifications from dvd format/logo licensing corporation. the different dvd formats have different books. each book contains hundreds of pages and costs approximately $5000. after obtaining this license, the develope...
wikipedia
754ed4f91cf2acced63f295bf40e54f698109147
strictly speaking, dvd authoring differs from the process
strictly speaking, dvd authoring differs from the process of mpeg encoding, but as of 2009 most dvd authoring software has a built-in encoder, although separate encoders are still used when better quality or finer control over compression settings are required.
wikipedia
04d9a8994dfc8d983f8c02bdec00d8b13edb607c
dvd authoring is the second step in the
dvd authoring is the second step in the process of producing finished dvds. the first step is the creation of the movie (or programme) and the second, the authoring, is the creation of artwork, user menus, insertion of chapter points, overdubs/commentaries, setting autoplay and/or repeat options, etc. the final step is...
wikipedia
2b03077d25a172ea9feb478b97b3170f070dfbd8
lykes work has focused on understanding the impact
lykes work has focused on understanding the impact of state-sponsored violence and terror. she has worked mostly in central america, in particular with the maya peoples of guatemala. she has used participatory action research and oral history as her primary research methods. she is the co-founder of the martín-baró fun...
wikipedia
0b3ae9b218a755f5c63210f8b97e3a43612c6f82
lykes originally hailed from new orleans. she obtained
lykes originally hailed from new orleans. she obtained her first ba degree from hollins university before proceeding to harvard university where she obtained an m.div. in applied theology. she obtained a ph.d. in community psychology from boston college.
wikipedia
a31b69f4be0d8aee538e80757785eed328792fdd
dean keith simonton is a distinguished professor emeritus
dean keith simonton is a distinguished professor emeritus based in davis, california, affiliated with the department of psychology at the university of california, davis. simonton is known for his research in the fields of genius, creativity, leadership, and aesthetics. his work focus into the cognitive, personal, deve...
wikipedia
0f372c40a0a71ce9c27bbd19f139ee12055d4d68
one of his findings was that the 10
one of his findings was that the 10 years' experience of deliberate practice is not a rule, but an average with significant variation around the mean. he found that the people who achieved the greatest lifetime productivity and highest levels of eminence required the least amount of time to achieve expertise. he also f...
wikipedia
998f36484fc68353b4c7779eb9e2408c9bab2d20
simonton's research examines cognitive, personal, developmental, social, and
simonton's research examines cognitive, personal, developmental, social, and cultural factors that underpin eminence and creativity. he employs archival data analysis techniques, including cross-cultural, transhistorical, biographical, and content analytical measures. his historiometric analyses shed light on eminent p...
wikipedia
50b510b9810e51ada0358989e6e8efd8213eb012
simonton served as the president of the society
simonton served as the president of the society for general psychology (apa division 1), the society for the psychology of aesthetics, creativity, and the arts (apa division 10), and the society for the history of psychology (apa division 26).
wikipedia
24270d9949966a777e95fb7fe8e3616974b9e86e
before joining the faculty at uc davis, he
before joining the faculty at uc davis, he held positions as an assistant professor at the university of arkansas, fayetteville, and as a teaching fellow at harvard university. he also served as a section leader in the history of civilization at occidental college from 1969 to 1970.
wikipedia
f598c5a7e2886f306cd3406d995608707301b023
since 2016, simonton has served as a distinguished
since 2016, simonton has served as a distinguished professor emeritus in the department of psychology at the university of california, davis. in 2013, simonton was honored as the ida cordelia beam distinguished visiting professor at the university of iowa.
wikipedia
bb1e71ac14201579da4ae222d63a396e505d1c00
he furthered his education at harvard university, earning
he furthered his education at harvard university, earning a master of arts in social psychology in 1973, followed by a ph.d. in social psychology in 1975. during his time at harvard, simonton received fellowships from the national science foundation and the danforth foundation.
wikipedia
43900553848edb01e29d78de6c9ea803ef0ad94a
dean keith simonton is a distinguished professor emeritus
dean keith simonton is a distinguished professor emeritus based in davis, california, affiliated with the department of psychology at the university of california, davis. simonton is known for his research in the fields of genius, creativity, leadership, and aesthetics. his work focus into the cognitive, personal, deve...
wikipedia
e4d4ba5024fd93ada186d6c1ac78c261cdd65db9
camilla bellone is an italian neuroscientist and assistant
camilla bellone is an italian neuroscientist and assistant professor in the department of basic neuroscience at the university of geneva, in switzerland. bellone's laboratory explores the molecular mechanisms and neural circuits underlying social behavior and probes how defects at the molecular and circuit level give r...
wikipedia
036501dd20b32bd5c5e38fb88015c2f6b2e92a9a
in a recent collaboration with researchers at unil,
in a recent collaboration with researchers at unil, bellone explored neuroimmune and μ-opioid receptor-driven effects on sociability. they found that μ-opioid receptor activation causes microglial release of tnf-a, a pro-inflammatory cytokine. when tnf-a binds to its receptor on neurons, this leads to a subsequent redu...
wikipedia
c48590ada68fc54f121934659707b47dd5a341ae
following this finding, bellone and her colleagues worked
following this finding, bellone and her colleagues worked to develop a disease model of asd with which to probe social neural circuit function. using shrna, they modelled shank3, a synapse scaffolding protein known to be implicated in asd phenotypes, insufficiency in the vta of mice. they found that mice exhibited impa...
wikipedia
acb4cfc4b351a33ac222b8c0bc6bff6fd90ef758
bellone sought to explore the connection between altered
bellone sought to explore the connection between altered synaptic proteins and impaired social behaviors, merging her previous research experience with her new independent career interests. reading genetic studies of autism spectrum disorder (asd), bellone found that many genes associated with asd are implicated in sca...
wikipedia
ef4a0c3bcfc06d024920c501e8493cc57f7b930d
bellone is on the editorial board for the
bellone is on the editorial board for the european journal of neuroscience, a reviewer for nat. neurosci., j. neuroscience, neuroscience, addiction biology, neural plasticity, frontiers, and pnas, on the editorial board for scientific reports, responsible for the unit "comment notre environnement influence-t-il la pris...
wikipedia
059459a64413c2fb499653b6caceae2641fb2420
bellone joined the 2016 nccr-synapsy project, an initiative
bellone joined the 2016 nccr-synapsy project, an initiative started in 2010 to understand the synaptic bases of mental diseases by bringing together basic scientists with clinical scientists in an effort to create translational collaborations. bellone collaborates closely with psychiatrists and clinical scientists to i...
wikipedia
5464ce3b6aa61cfb1aa387a032edbb31db233d76
bellone applied for a position back at the
bellone applied for a position back at the university of geneva. she was offered a position in 2016 as a tenure-track assistant professor to the department of basic neuroscience at the university of geneva. bellone's lab at the university of geneva continues to probe the dopaminergic neural circuits underlying social b...
wikipedia
cb52b28f031e1dfdc35ecd23628a18a17eed0b77
in 2014, bellone applied to the university of
in 2014, bellone applied to the university of lausanne to start her own lab. funded by the swiss national science foundation, bellone became an assistant professor in the department of fundamental neuroscience at the university of lausanne. her lab at unil focused on understanding the development of the brain's reward ...
wikipedia
269efd87f59b195603fb0b94907605701ba67a47
in 2010, bellone was awarded the ambizione grant
in 2010, bellone was awarded the ambizione grant from the swiss national science foundation, a grant meant to support young researchers in starting their own independent projects at swiss higher education institutions. for bellone, this grant helped her to transition towards an independent career in neuroscience. bello...
wikipedia
83611cffb9719ceaba50b86e6ad2f633e09dde08
in 2007, bellone returned to switzerland planning to
in 2007, bellone returned to switzerland planning to pursue a career in academia. from 2007 until 2011, bellone worked in lüscher's lab as a maître assistante where she began to transition from the mentored-phase of her career to an independent career. during her further training in the lüscher lab, bellone explored th...
wikipedia
bd1c7ee3b52a88cbd5c0cd95f505bf294e21b921
bellone completed her phd and joined the lab
bellone completed her phd and joined the lab of roger nicoll at the university of california, san francisco. shortly after joining the nicoll lab, bellone published a first author paper in neuron exploring the trafficking of nmda receptors in hippocampal pyramidal cells in newborn mice. bellone found that synaptic acti...
wikipedia
fafd6a1b45ebc9bfb085ba6d088fb81b1c99fdf9
bellone stayed at the university of milano to
bellone stayed at the university of milano to begin her graduate studies exploring the molecular biology and structural composition of the synapse. bellone realized that she wanted to go beyond protein-protein interactions and explore synaptic activity and dynamic function. bellone reached out to christian lüscher at t...
wikipedia
943c1786a17d760921ec4da24fd1b75f04f063a9
bellone was born in italy in 1975. bellone
bellone was born in italy in 1975. bellone studied pharmacology at the university of milano in 1998, and found a mentor in monica di luca, a neuropharmacologist. she completed her master's in pharmacy. bellone became fascinated by neuroscience and developed a passion for answering the many unknown questions about brain...
wikipedia
b773253b10ec8e0be4ec798fd959f020eb9c0d2b
camilla bellone (born c. 1975) is an italian
camilla bellone (born c. 1975) is an italian neuroscientist and assistant professor in the department of basic neuroscience at the university of geneva, in switzerland. bellone's laboratory explores the molecular mechanisms and neural circuits underlying social behavior and probes how defects at the molecular and circu...
wikipedia
3b2a5f753c286ef161438f764bdbc1472266f51e
the continental o-190 is a series of engines
the continental o-190 is a series of engines made by continental motors beginning in the 1940s. of flat-four configuration, the engines produced 75 hp (56 kw) or 85 hp (63 kw) respectively. the two variants shared the same bore, stroke and compression ratio. the c85 produced ten extra horsepower by virtue of having a m...
wikipedia
5872e194f135d206508e9598688868d7745f168a
the continental o-190 (company designations c75 and c85)
the continental o-190 (company designations c75 and c85) is a series of engines made by continental motors beginning in the 1940s. of flat-four configuration, the engines produced 75 hp (56 kw) or 85 hp (63 kw) respectively.
wikipedia
a0e46ca380879d7815732d1bc746b6426a3a828c
brian arthur sellick (1918–1996) was a british anaesthetist.
brian arthur sellick (1918–1996) was a british anaesthetist. he was known for cricoid pressure, he described in 1961. this manoeuvre is named after him. sellick worked as an anaesthetist at middlesex hospital. there he demonstrated the efficacy of his invention using a cadaver with full stomach placed in the trendelenb...
wikipedia
b86335c0aa2bfa06238dab29c136db6fcc2cab4e
in enzymology, a diacylglycerol cholinephosphotransferase is an enzyme
in enzymology, a diacylglycerol cholinephosphotransferase is an enzyme that catalyzes the chemical reaction thus, the two substrates of this enzyme are cdp-choline and 1,2-diacylglycerol, whereas its two products are cmp and phosphatidylcholine.
wikipedia
49a6b94d492ee8a3c6d91b09a379afbee7b122ba
in electronics, a common-emitter amplifier is one of
in electronics, a common-emitter amplifier is one of three basic single-stage bipolar-junction-transistor (bjt) amplifier topologies, typically used as a voltage amplifier. it offers high current gain, medium input resistance and a high output resistance. the output of a common emitter amplifier is inverted; i.e. for a...
wikipedia
aa0bc81ddafd5d79fdb917ad0125f4af45d38bca
common-emitter amplifiers are also used in radio frequency
common-emitter amplifiers are also used in radio frequency circuits, for example to amplify faint signals received by an antenna. in this case it is common to replace the load resistor with a tuned circuit. this may be done to limit the bandwidth to a narrow band centered around the intended operating frequency. more i...
wikipedia
dcaf8a405d49c1211889b9e623491c45b1b3d0e2
the input capacitor c removes any dc component
the input capacitor c removes any dc component of the input, and the resistors r and r bias the transistor so that it will remain in active mode for the entire range of the input. the output is an inverted copy of the ac component of the input that has been amplified by the ratio r / r and shifted by an amount determin...
wikipedia
6c3cc7511bd24cb2ccdf80e1695700ea0b5c7fdf
current gain in the common emitter circuit is
current gain in the common emitter circuit is obtained from the base and the collector circuit currents. because a very small change in base current produces a large change in collector current, the current gain (β) is always greater than unity for the common-emitter circuit, a typical value is about 50.
wikipedia
ea130cf44259ba83676a8e6eeb6fc1db7725d0e7
the common-emitter circuit is the most widely used
the common-emitter circuit is the most widely used of junction transistor amplifiers. as compared with the common-base connection, it has higher input impedance and lower output impedance. a single power supply is easily used for biasing. in addition, higher voltage and power gains are usually obtained for common-emitt...
wikipedia
fb8e90431f4ce074fab8e8f9d2a66e8ad35833c1
it is also named common-emitter amplifier because the
it is also named common-emitter amplifier because the emitter of the transistor is common to both the input circuit and output circuit. the input signal is applied across the ground and the base circuit of the transistor. the output signal appears across ground and the collector of the transistor. since the emitter is ...
wikipedia
d32cfa454ffc81d851be0027bd4434981f4e2e97
the miller effect negatively affects the performance of
the miller effect negatively affects the performance of the common source amplifier in the same way (and has similar solutions). when an ac signal is applied to the transistor amplifier it causes the base voltage vb to fluctuate in value at the ac signal. the positive half of the applied signal will cause an increase i...
wikipedia
ee3d9b7209ceaedc3b7e0ac17204c1ff75a77d5f
the bandwidth of the common-emitter amplifier tends to
the bandwidth of the common-emitter amplifier tends to be low due to high capacitance resulting from the miller effect. the parasitic base-collector capacitance c cb {\displaystyle c_{\text{cb}}\,} appears like a larger parasitic capacitor c cb (1 − a v) {\displaystyle c_{\text{cb}}(1-a_{\text{v}})\,} (where a v {\disp...
wikipedia
702daef1baf63d9afd3e6cccf000170b74714180
if the emitter degeneration resistor is not present,
if the emitter degeneration resistor is not present, then r e = 0 Ω {\displaystyle r_{\text{e}}=0\,\omega }, and the expressions effectively simplify to the ones given by the rightmost column (note that the voltage gain is an ideal value; the actual gain is somewhat unpredictable). as expected, when r e {\displaystyle ...
wikipedia
849b69ef53e0fdd3d427c12e9dd6b3825d514b5a
(while this is often described as " negative
(while this is often described as " negative feedback ", as it reduces gain, raises input impedance, and reduces distortion, it predates the invention of the negative feedback amplifier and does not reduce output impedance or increase bandwidth, as a true negative feedback amplifier would do.)
wikipedia
de6e668ec26d992c985fc3293b0513f8b18be3eb
the voltage gain depends almost exclusively on the
the voltage gain depends almost exclusively on the ratio of the resistors r c / r e {\displaystyle r_{\text{c}}/r_{\text{e}}} rather than the transistor's intrinsic and unpredictable characteristics. the distortion and stability characteristics of the circuit are thus improved at the expense of a reduction in gain.
wikipedia
d1c11cef84e8ddfb37d13ca38db2255738bafed3
other problems associated with the circuit are the
other problems associated with the circuit are the low input dynamic range imposed by the small-signal limit; there is high distortion if this limit is exceeded and the transistor ceases to behave like its small-signal model. one common way of alleviating these issues is with emitter degeneration. this refers to the ad...
wikipedia
e67a616624241690da6627727b485b8242185301
common-emitter amplifiers give the amplifier an inverted output
common-emitter amplifiers give the amplifier an inverted output and can have a very high gain that may vary widely from one transistor to the next. the gain is a strong function of both temperature and bias current, and so the actual gain is somewhat unpredictable. stability is another problem associated with such high...
wikipedia
dd0eb453fb7d5daf5fed5974188e2e95714a910e
in this circuit, the base terminal of the
in this circuit, the base terminal of the transistor serves as the input, the collector is the output, and the emitter is common to both (for example, it may be tied to ground reference or a power supply rail), hence its name. the analogous fet circuit is the common-source amplifier, and the analogous tube circuit is t...
wikipedia
3a8399f2cfdd7d167b1707a69890f7b1103faa9b
in electronics, a common-emitter amplifier is one of
in electronics, a common-emitter amplifier is one of three basic single-stage bipolar-junction-transistor (bjt) amplifier topologies, typically used as a voltage amplifier. it offers high current gain (typically 200), medium input resistance and a high output resistance. the output of a common emitter amplifier is inve...
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ae2216dc660426c51621618882a7df14fa2e719d
the continental o-470 engine is a family of
the continental o-470 engine is a family of carbureted and fuel-injected six-cylinder, horizontally opposed, air-cooled aircraft engines that was developed especially for use in light aircraft by continental motors. engines designated "io" are fuel-injected. the family also includes the e165, e185, e225 and the e260 en...
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615c6a5124408aa46f99d16c4c0dfb1fa7424f8b
the o-470 family of engines covers a range
the o-470 family of engines covers a range from 213 hp (159 kw) to 260 hp (194 kw). the engines were developed in the late 1940s and certification was applied for on 23 october 1950 on the regulatory basis of part 13 of the us civil air regulations effective 1 august 1949 as amended by 13-1. the first o-470 model was c...
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77515cfb57d2d82ab579ac6c44447e736cd0e10d
the first engine in this series was the
the first engine in this series was the e165, a 471 cubic inch (7.7 l) engine producing 165 hp (123 kw), and was the first of the continental's "e" series engines. later versions were given the company designation of e185 (185 hp (138 kw) continuous) and e225 (225 hp (168 kw)). when the us military gave them all the de...
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963dbe8de506e2fb370fa763060def6438f498cc
the continental o-470 engine is a family of
the continental o-470 engine is a family of carbureted and fuel-injected six-cylinder, horizontally opposed, air-cooled aircraft engines that was developed especially for use in light aircraft by continental motors. engines designated "io" are fuel-injected.
wikipedia
0a8abb9340c7c974def12acf20dea444e62e5276
conducted emissions are the effects in power quality
conducted emissions are the effects in power quality that occur via electrical and magnetic coupling, electronic switch of semiconductor devices, which form a part of electromagnetic compatibility issues in electrical engineering. these affect the ability of all interconnected system devices in the electromagnetic envi...
wikipedia
2712fbe138bd54aa7cb2a624844cf6266c64605b
conducted emissions are the effects in power quality
frequency range is termed supraharmonics. further, following the advancements in telecommunications engineering, the presence of electronic devices has gradually increased in the ac mains grid network towards having more semiconductor based switch devices, giving rise to further electromagnetic interference issues due...
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4cd000c5732846bb704d6d8e32a3b2c0d8b8eb86
as per thais.m.mendes et al., the effects of
as per thais.m.mendes et al., the effects of supraharmonic emissions are confined to neighboring devices and do not propagate over long distances. defining the measurement window and analysis window is one of the appropriate way to standardize conducted emissions. measurements as per iec 61000-4-7, iec 61000-4-30, iec-...
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495c32e1958464f05829e7b2189522d1e355094f
this frequency bandwidth is in the range of
this frequency bandwidth is in the range of 2–150 khz and is termed as supraharmonics. the frequency bandwidth was previously ignored and was considered as a gap between radiated emission and conducted emission. the current research suggest that much effort is being given to understand measurement methods for supraharm...
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a86402d2b26a9651afb8c2973369351c471a600c
this frequency bandwidth is in the range of
this frequency bandwidth is in the range of 0–2 khz and is equivalent to the same frequency range as ac harmonics. the name suggest that lower amount of conducted emissions are expected due to advancements in filters. it is widely accepted among researchers that the %lfsd value should be sufficient to address the dc ha...
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b990702f9c9dcbb24a3755c03537bc12c884c3ac
other issues with power quality in dc mains
other issues with power quality in dc mains are to do with frequency range for conducted emissions in the electromagnetic spectrum. in the range of 0–2 khz, commonly termed as garbage band, the dc harmonic quantity is calculated using an analogue of ac harmonics in frequency domain. however, as per the expected interac...
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538c11b163b71963a70c241e482bfa091107aa12
unlike ac, dc has no fundamental frequency or
unlike ac, dc has no fundamental frequency or period and hence there cannot be a multiple of the fundamental frequency over which harmonics can be calculated. further, the frequency range over which dc harmonics are calculated might not be the same as ac harmonics. much of research covering dc harmonics suggest use of ...
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c716fe78a7b1249124f152d5c471c2c2fd37a046
for alternating current technology has been well established
for alternating current technology has been well established in the modern world, the parameter for measuring conducted emissions is well understood and is called total harmonic distortion (%thd). it measures power quality of ac mains for different voltage levels as described in common emc test standards. by definition...
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72b8915694ef4bcb03c1e25c90c131c39272b258
electric power quality in ac mains is well
electric power quality in ac mains is well developed and established with empirical data gathered over a century. many parameters exist to determine and calculate the harmonic along with the noise. concerning dc mains, much of the dc technology research for electric power distribution was abandoned in the 1920s after i...
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57c22d64f2724b3acefd3c38d5b859be8817b56e
conducted emissions in electric supply system could be
conducted emissions in electric supply system could be described as non-linearity or deviations observed in electric parameters. in ac, the variations are observed in the harmonics, while in dc they are observed as non linearity observed in time-domain and unexpected frequency peaks in frequency domain. the effects of ...
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9eeefb20e6df0494a57dbc208e6276c607ca4d95
technically, conducted emissions may be described as noise
technically, conducted emissions may be described as noise in the electric current or voltage generated by the electrical appliance or its susceptibility to it. the main difference between signal noise and emissions is that noise exists in a finite energy signal while emission exists in a finite power signal. as noise ...
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8db9959395da4c36c80527b6cfcc7da412dd7d49
further, following the advancements in telecommunications engineering, the
further, following the advancements in telecommunications engineering, the presence of electronic devices has gradually increased in the ac mains grid network towards having more semiconductor based switch devices, giving rise to further electromagnetic interference issues due to conducted emissions in the near and far...
wikipedia
1459dc1e5cadc42231b7be5a570d59ff581c1942
following the effects of conducted emissions, the electric
following the effects of conducted emissions, the electric power quality is classified separately in common ac mains and dc mains systems. since alternating current technology has been well established, the parameters and the effects in power quality in ac are well established. the parameter for measuring ac power qual...
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00ae9ab7be0685d64e6f12984fd52633bf098a1f
conducted emissions consist a part of electromagnetic interference
conducted emissions consist a part of electromagnetic interference in circuits that mainly create issues in delivered power quality, owing to interference caused by harmonics arising due to linear & non linear loads present in the electric system mainly due to increasing presence of switched mode power supply and other...
wikipedia
cdbae753086943fda88d9a216d0e961b85f92b2f
conducted emissions are the effects in power quality
conducted emissions are the effects in power quality that occur via electrical and magnetic coupling, electronic switch of semiconductor devices, which form a part of electromagnetic compatibility issues in electrical engineering. these affect the ability of all interconnected system devices in the electromagnetic envi...
wikipedia
fbe490233c1f18fdd5b5deb7dbd808316dbd1da5
cobalt-precorrin-5b (c1)-methyltransferase (ec 2.1.1.195), cobalt-precorrin-6a synthase, cbid (gene))
cobalt-precorrin-5b (c1)-methyltransferase (ec 2.1.1.195), cobalt-precorrin-6a synthase, cbid (gene)) is an enzyme with systematic name s-adenosyl-l-methionine:cobalt-precorrin-5b (c1)-methyltransferase. this enzyme catalyses the following chemical reaction this enzyme catalyses the c-1 methylation of cobalt-precorrin-...
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9e3071a460844c890aaf3f3b86cfad190de2d2ee
this enzyme catalyses the c-1 methylation of cobalt-precorrin-5b
this enzyme catalyses the c-1 methylation of cobalt-precorrin-5b in the anaerobic pathway of adenosylcobalamin biosynthesis in bacteria such as salmonella typhimurium, bacillus megaterium, and propionibacterium freudenreichii subsp. shermanii.
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b85190a0aff57db813a660e0c88b6e3cd778db18
cobalt-precorrin-5b (c)-methyltransferase (ec 2.1.1.195), cobalt-precorrin-6a synthase, cbid (gene))
cobalt-precorrin-5b (c)-methyltransferase (ec 2.1.1.195), cobalt-precorrin-6a synthase, cbid (gene)) is an enzyme with systematic name s-adenosyl-l-methionine:cobalt-precorrin-5b (c)-methyltransferase. this enzyme catalyses the following chemical reaction
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88d21510b59cd2f6ef8528e6176f5749458875e2
in functional programming, continuation-passing style (cps) is a
in functional programming, continuation-passing style (cps) is a style of programming in which control is passed explicitly in the form of a continuation. this is contrasted with direct style, which is the usual style of programming. gerald jay sussman and guy l. steele, jr. coined the phrase in ai memo 349 (1975), whi...
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e07ed0b08ab0ee0fae5b63c7d0a0a4deaa05196b
john c. reynolds gives a detailed account of
john c. reynolds gives a detailed account of the numerous discoveries of continuations. a function written in continuation-passing style takes an extra argument: an explicit "continuation"; i.e., a function of one argument. when the cps function has computed its result value, it "returns" it by calling the continuation...
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58c507cb5c0186bb429d91d4416d4a3157322748
in mathematics, the curry–howard isomorphism between computer programs
in mathematics, the curry–howard isomorphism between computer programs and mathematical proofs relates continuation-passing style translation to a variation of double-negation embeddings of classical logic into intuitionistic (constructive) logic. unlike the regular double-negation translation, which maps atomic propos...
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