作者: Fulminate 時(shí)間: 2025-3-21 21:04 作者: 的闡明 時(shí)間: 2025-3-22 01:21
978-0-412-48200-7Springer Science+Business Media Dordrecht 1994作者: 和諧 時(shí)間: 2025-3-22 07:11
Oscillators,Oscillators are used to generate coherent sinusoidal waveforms which may be used to transmit information or energy. In we met several vacuum tube oscillators, e.g. the reflex klystron and the magnetron. Here we will discuss oscillators based on semiconductor devices.作者: Apogee 時(shí)間: 2025-3-22 12:12 作者: SLAY 時(shí)間: 2025-3-22 15:05
Theo G. van de Roer PhDhought that on political and security matters the UN’s significance lay in the sphere of propaganda rather than diplomacy, have already been described in Chapter 2. However, as intimated at the end of that chapter, in late 1986 and early 1987 there were unmistakable signs that the White House, the S作者: Canvas 時(shí)間: 2025-3-22 20:42
Theo G. van de Roer PhDhe superpowers, it was agreed that ‘foreign’ (i.e. Russian) troops would be withdrawn in stages between 15 May and 15 February 1989, and also that the good offices of the UN Secretary-General should be employed to ensure full implementation of the accords. (For the full text of the accords, see Appe作者: glamor 時(shí)間: 2025-3-22 22:26 作者: 暫時(shí)中止 時(shí)間: 2025-3-23 01:56
Theo G. van de Roer PhDhe superpowers, it was agreed that ‘foreign’ (i.e. Russian) troops would be withdrawn in stages between 15 May and 15 February 1989, and also that the good offices of the UN Secretary-General should be employed to ensure full implementation of the accords. (For the full text of the accords, see Appe作者: deforestation 時(shí)間: 2025-3-23 07:39 作者: FACT 時(shí)間: 2025-3-23 13:30 作者: MUT 時(shí)間: 2025-3-23 17:26 作者: Cacophonous 時(shí)間: 2025-3-23 21:57
Theo G. van de Roer PhDmore, the various focus areas of the multidisciplinary response to the threat posed by returnees are elaborated upon. These entail measures targeting travel movements, criminal justice approaches, rehabilitation and reintegration, and the special focus on families and children.作者: BOOST 時(shí)間: 2025-3-23 23:14
Theo G. van de Roer PhDing what the returning foreign fighter has actually done while being abroad. The aim of presenting these in this chapter should not be seen as an endorsement—their critical examination will make this quite clear—but as a demonstration of the fact that the refusal to repatriate and prosecute can only作者: 金盤是高原 時(shí)間: 2025-3-24 04:34 作者: 健忘癥 時(shí)間: 2025-3-24 10:12
Theo G. van de Roer PhDd fact-specific approach to the jurisdictional nexus. The chapter focuses on the relevance of these standards to decisions regarding the repatriation of persons from abysmal detention camps abroad, and considers the first international decision on the matter, from the UN Committee on the Rights of t作者: MAOIS 時(shí)間: 2025-3-24 11:48
Vacuum electron devices,on of the power output that can be obtained from microwave tubes. In short, despite the enormous development of semiconductor technology, it is much too early to declare the vacuum tube a fossil of a past period. In fact, developments in the tube field have never stopped and still continue. Also, as作者: 咽下 時(shí)間: 2025-3-24 15:24
Book 1994rely devoted to a particular device, for example, the GaAs MESFET. With regard to tubes the situation is even worse: books that treat the basic principles are usually quite old and modern books often concentrate on specific devices, like high power tubes. So it seems that there is room for a book li作者: 彩色的蠟筆 時(shí)間: 2025-3-24 22:39
some entirely devoted to a particular device, for example, the GaAs MESFET. With regard to tubes the situation is even worse: books that treat the basic principles are usually quite old and modern books often concentrate on specific devices, like high power tubes. So it seems that there is room for a book li978-0-412-48200-7978-1-4615-2500-4作者: 一再遛 時(shí)間: 2025-3-25 02:31
Theo G. van de Roer PhDo a predictable head during the presidency of Ronald Reagan. Contemptuous of the gap between the organisation’s pretensions and its performance and resentful of the anti-Western sentiments which were so often heard in it, the attitude of the Reagan administration to the UN fluctuated between thinly 作者: bonnet 時(shí)間: 2025-3-25 04:00 作者: originality 時(shí)間: 2025-3-25 08:06 作者: ITCH 時(shí)間: 2025-3-25 13:42
Theo G. van de Roer PhDnians a year later, the United Nations achieved the second major diplomatic breakthrough of this period of its renascence. This was the signing at UN headquarters in Geneva, on 14 April 1988, of the four agreements which brought to an end the eight-year war in Afghanistan. Under the first of these a作者: SPER 時(shí)間: 2025-3-25 16:12 作者: 護(hù)航艦 時(shí)間: 2025-3-25 20:29
Theo G. van de Roer PhDn the elite athletes (Connell et al. 2004; Comin et al. 2013; Kerkhoffs et al. 2013). Even if the follow-up MRI examination has been recommended by several authors to monitor the recovery after muscle injury and to support the subsequent return to training decision-making process, the MRI examinatio作者: Interferons 時(shí)間: 2025-3-26 04:04 作者: CALL 時(shí)間: 2025-3-26 07:28
Theo G. van de Roer PhDations (UN) and the Global Counterterrorism Forum (GCTF). These developments include both the adoption of binding legal obligations, and non-binding recommendations and policy developments. It reflects on the role the GCTF has acquired within the international counter-terrorism architecture and the 作者: MOAT 時(shí)間: 2025-3-26 10:15 作者: Patrimony 時(shí)間: 2025-3-26 12:50 作者: ensemble 時(shí)間: 2025-3-26 18:13
Theo G. van de Roer PhD on human rights grounds, depend on the law applying in the first place. Yet states have increasingly advanced a restrictive approach to the ‘extra-territorial’ scope of their obligations, purporting to exclude a host of responses to the ‘foreign fighter’ phenomenon—including targeted killings, citi作者: 有斑點(diǎn) 時(shí)間: 2025-3-27 00:47
History,rowaves started already with the first experiments of Heinrich Hertz around 1887. Hertz used a spark transmitter that produced signals in a very large frequency band and he selected from these a band around 420 MHz with an antenna that measured half a wavelength at this frequency. The receiving ante作者: 金哥占卜者 時(shí)間: 2025-3-27 01:32 作者: 琺瑯 時(shí)間: 2025-3-27 05:30 作者: Glucocorticoids 時(shí)間: 2025-3-27 09:35
Carrier transport and noise in devices,nowledge is called a model. A device model tells us approximately how a device reacts to an electromagnetic field in which it is placed. For semiconductor devices, which in general are small compared with a wavelength, this simplifies to the response of the terminal currents to the terminal voltages作者: 踉蹌 時(shí)間: 2025-3-27 13:48 作者: aphasia 時(shí)間: 2025-3-27 21:30 作者: RALES 時(shí)間: 2025-3-27 23:58
Transmission lines and microwave circuits,n direction then the propagation of a sinusoidal wave can be described by a function exp(jω. — γz) which is common to all field components. The constant y is called the . and is in general a complex quantity. Its real part (α) is called the . and its imaginary part (.) the .. For lossless lines the 作者: 人造 時(shí)間: 2025-3-28 03:50
Detection, modulation and frequency conversion,Fig. 8.1(a)). Its operation is based on the rectifying effect of a metal-semiconductor junction. Modern forms are the planar Schottky diode (Fig. 8.1(b)) and the beam lead diode (Fig. 8.1(c)). p-n junctions are not usable in the microwave range because of the charge storage under forward bias which 作者: laxative 時(shí)間: 2025-3-28 08:31 作者: 一大群 時(shí)間: 2025-3-28 12:31
Monolithic microwave integrated circuits,e. The microwave monolithic ICs (MMICs) are direct descendants of the hybrid microstrip integrated circuits (MICs) in which the active and some of the passive components are mounted as discrete devices on dielectric substrates. These have been treated in , and . In MMICs the substrate has to be semi作者: NEEDY 時(shí)間: 2025-3-28 16:41 作者: 美食家 時(shí)間: 2025-3-28 20:36
Diodes,ide in the sense that passive diodes are used for frequency conversion and control and active diodes for signal generation. In the following we will discuss the many physical diode structures that exist nowadays. Applications will be discussed in Chapters 8, 9 and 10.作者: grounded 時(shí)間: 2025-3-29 02:51 作者: 小溪 時(shí)間: 2025-3-29 06:17
Carrier transport and noise in devices,ctor devices, which in general are small compared with a wavelength, this simplifies to the response of the terminal currents to the terminal voltages. Depending on what the purpose is we distinguish two kinds of models: physical models and equivalent circuits.作者: avarice 時(shí)間: 2025-3-29 08:45
Transmission lines and microwave circuits,nt y is called the . and is in general a complex quantity. Its real part (α) is called the . and its imaginary part (.) the .. For lossless lines the . dependence simplifies to exp[j (ω. — .)]. Another important quantity that characterizes a transmission line is the . Z., in principle also a complex quantity.作者: 仔細(xì)檢查 時(shí)間: 2025-3-29 12:54 作者: 遣返回國 時(shí)間: 2025-3-29 17:23 作者: 縮短 時(shí)間: 2025-3-29 20:23
History,nna had the same dimensions. Hertz also used parabolic mirrors and lenses of dielectric material. In 1893 Lord Kelvin gave a theoretical analysis of hollow waveguides and shortly afterwards Oliver Lodge demonstrated waveguides at frequencies of 1.5–4 GHz.作者: 倔強(qiáng)一點(diǎn) 時(shí)間: 2025-3-30 01:42
Semiconductor materials,rowave semiconductor devices it is therefore necessary to have some understanding of the physics involved. What follows is not intended as a crash course in semiconductor physics but as a brief memory-refreshing review for those who previously had a course in semiconductor physics.作者: 演講 時(shí)間: 2025-3-30 05:40
Amplifiers,mmunication satellites. In these systems, when the power is not too great, say 20 W, transistor amplifiers can be used; for greater powers vacuum tubes are still necessary. In particular, traveling wave tubes are still widely used because of their large bandwidth and high amplification.作者: 積習(xí)難改 時(shí)間: 2025-3-30 10:46
https://doi.org/10.1007/978-94-010-3491-3Artes; Organisation; knowledge; nature; religion; seventeenth century; superstition作者: 哄騙 時(shí)間: 2025-3-30 14:49
ation advice from the experts.Glycosyltransferases (GTs) are essential for the biosynthesis of complex glycoconjugates and are powerful tools to study the functions of complex glycans in health, development and disease.? Complex glycoconjugates, such as glycoproteins, proteoglycans and glycolipids,
