103,271 research outputs found
Marko Pologiin ayalal: Venetsiin Ramuziogiin 1559 onii huvilbar / The travels of Marco Polo: Ramusio's Venetian version (1559)
No full textThis book is the second edition with additional notes of the Travels of Marco in Mongolian language (Translation by Bat-Uchral G, Edition, commentary and annotation by Ragagnin, E & Simion, S & Auyeskhan R.
Recommended from our members
Simion 3D Version 6.0 User`s Manual
No full textThe original SIMION was an electrostatic lens analysis and design program developed by D.C. McGilvery at Latrobe University, Bundoora Victoria, Australia, 1977. SIMION for the PC, developed at the Idaho National Engineering Laboratory, shares little more than its name with the original McGilvery version. INEL`s fifth major SIMION release, version 6.0, represents a quantum improvement over previous versions. This C based program can model complex problems using an ion optics workbench that can hold up to 200 2D and/or 3D electrostatic/magnetic potential arrays. Arrays can have up to 10,000,000 points. SIMION 3D`s 32 bit virtual Graphics User Interface provides a highly interactive advanced user environment. All potential arrays are visualized as 3D objects that the user can cut away to inspect ion trajectories and potential energy surfaces. User programs have been greatly extended in versatility and power. A new geometry file option supports the definition of highly complex array geometry. Extensive algorithm modifications have dramatically improved this version`s computational speed and accuracy
EUGEN SIMION: EXEGI MONUMENTUM
No full textThis text is a reminder that October marks one year since the passing of Professor Academician Eugen Simion, a prominent figure in Romanian culture. The article pays tribute to the efforts and achievements of Eugen Simion’s work and legacy, exemplified by the verses of the Latin poet Horace, “exegi monumentum aere perennius”. It highlights the significant contributions of this exceptional personality of Romanian culture and literature, emphasising Eugen Simion’s reputation as one of the most esteemed literary critics and historians, essayists and theorists in the field of literature. He is considered the (theoretical) founder of biographical genres (journals, correspondence, memoirs). His activity as an editor, preface writer, author of monographs and promoter of national-scale projects yielded important results, including Dicționarul General al Literaturii Române ‘The General Dictionary of Romanian Literature’ (DGLR, two editions), Cronologia vieții literare românești 1944 – 2012 ‘The Chronology of Romanian Literary Life 1944 – 2012’ (CVLR, 60 volumes) and the facsimile reproduction of Eminescu’s manuscripts (notebooks) (38 volumes). A university professor and member of the Romanian Academy and president of this high forum between 1997 and 2006, Eugen Simion also became a member of seven other academies in the United Kingdom, Denmark, France, Greece, Moldova, Spain and Serbia. Some of his books and studies were translated in Belgium, Switzerland, France, Germany, the United States, Serbia and Hungary. The unexpected loss of Professor Eugen Simion left a vast literary project unfinished, deprived now of the infectious energy and enthusiasm of its initiator. These projects are currently being continued and completed by researchers at the “G. Calinescu” Institute of Literary History and Theory of the Romanian Academy, where Eugen Simion served as director
Distributed amplifier based broadband and low spurious frequency doubler
No full textA circuit topology for a frequency doubler consisting of a distributed amplifier work-
ing under nonlinear regime is analyzed analytically and characterized experimentally. Fully-
distributed circuit topologies for the phase shifter used to realize the gate and drain artificial
transmission lines of the distributed amplifier are proposed. For these types of phase shifters,
it is shown that efficient rejection of the output odd harmonics is possible, but also low ripple
of the output power level on the output second harmonic is obtained. The proposed frequency
doubler has been designed for central input frequency equal to 5 GHz, and the designed cir-
cuit has been fabricated, too. The experimental conversion loss for the fabricated frequency
doubler is less than 4 dB and 7 dB, when the power level to the input is imposed to –1 dBm
and 5 dBm, respectively, while the input frequency is between 4 and 6 GHz
CRLH unit cells - The key for new design methods of distributed active and passive microwave devices and circuits
No full textRecent applications of CRLH unit cells
used to design distributed passive and active microwave
devices and circuits are presented. In particular, new
configurations for small-size passive devices based on
quarter-wavelength transmission line sections, as well as
microwave amplifiers, oscillators and frequency doublers
are analyzed. The performances of these new circuit
topologies are put into evidence numerically and the
results are validated by experiments
High power efficiency distributed oscillator based on composite-right-/left-handed unit cells
No full textA microwave oscillator topology based on CRLH (Composite Right-/Left-Handed) unit cells is
analyzed theoretically and experimentally tested. The oscillator consists of a CRLH based
distributed amplifier and a positive feedback realized by a simple transmission line. The oscillator
has two output ports, where the power levels are practically the same. For this topology, we have
found the oscillation condition and we demonstrate that each transistor gives the same contribution
to the power delivered at the two output ports, in this way, the output power is maximized. The
oscillator has been designed for a frequency of oscillation of 2.8 GHz and fabricated in hybrid
technology, by using InGaAs HEMTs and microstrip lines. The measured powers at the two output
ports are equal to 12.6 dBm and 10.4 dBm, the small difference between these values being given
by the insertion loss of the gate line. The experimental frequency of oscillation is 2.77 GHz, with a
difference of less than 1% in comparison with the expected value. Due to the frequency selectivity
of the CRLH unit cells, numerical simulations predict low phase noise for this configuration of
oscillator.
Broadband and small-size fully-distributed CRLH based ring coupler
No full textA topology for a 3-dB broadband and small-size ring
coupler is designed and numerically analyzed. It consists of
fully-distributed Composite Right-/Left-Handed phase shifters
and a Lange coupler. The frequency bandwidth is one octave
centered on 1.5GHz. The area occupied by the coupler is 25% of
the conventional ring coupler topology. The coupler has been
fabricated and it is ready for the experimental characterization
Design considerations and experimental results on composite right-/left-handed based distributed oscillator
No full textAn oscillator based on distributed amplifier realized by using CRLH (Composite Right-/Left-Handed) unit cells is designed and experimentally validated. The positive feedback consists of a transmission line which connects the input port and drain idle port of the amplifier. The remaining two ports of the distributed amplifier are the oscillator output ports. For this oscillator topology, the transistors give the same contribution to the output power. The measured powers at the two output ports are equal to 12.6 dBm and 10.4 dBm. The experimental frequency of oscillation is 2.77 GHz, the difference compared to the simulated value being less than 1%
Analysis and design of a new topology for a broadband and low spurious distributed frequency doubler
No full textA new distributed frequency multiplier
topology is proposed. The phase matching condition
accordingly to the order of frequency multiplication is
derived. Based on this topology, a frequency doubler for
8–12 GHz output frequencies is designed and analyzed
numerically. Due to the circuit topology, the fundamental
and third harmonics at the output may be suppressed
completely
Design considerations on balanced CRLH single-ended dual-fed distributed amplifier
No full textSingle-ended dual-fed distributed amplifier (SEDFDA) based balanced amplifier is analyzed and the layout is designed. The gate and drain artificial lines are realized with Composite Right-/Left-Handed (CRLH) phase shifters, having convenient topology for transistor connection. The amplifier design takes into account the catalog S-parameters of the transistors
- …
