发布时间：
文渊期刊是国家级别的期刊。
《文渊》杂志是经国家新闻出版广电总局批准，由中国出版传媒股份有限公司主管、主办的国家级教育社科综合类专业学术理论期刊。
国内统一刊号：CN11-9276/G，国际标准刊号：ISSN2096-6288。
主要栏目：教育前沿、高教研究、职教论坛、基础教育、教学论坛、管理纵横、经济视角、文体艺术、图书档案、信息工程、科学论坛、理论广角等。
作者投稿《文渊》要求：
观点新颖，主题明确，层次清楚，数据准确，语言简练，体现科学性、可读性和创新性。字数以3000-10000字符(两版起)为宜。作者署名人数一般不超过3人。
第一作者须附简介(姓名、出生年月、性别、民族、籍贯、学历、职称、研究方向、地址、邮编、邮箱、电话等)，其他作者附单位、邮编。来稿用word格式排版，图表等务必准确、清晰、规范。
综述：是的。
《文渊》国家级期刊，起发字符：2500字符1版起发。
收稿范围：高教研究、职教论坛、教育时空、思政教育、英语天地、管理纵横、经济视角、文体艺术、图书档案、网络科技、信息工程、科学论坛、理论广角
简介：
《文渊》杂志是经国家广播电视总局批准，由中国出版传媒股份有限公司主管、主办的国家级文教社科综合类专业学术理论期刊。
国内统一刊号：CN 11-9276/G，国际标准刊号：ISSN 2096-6288。主要栏目设置：高教研究、职教论坛、教育时空、思政教育、英语天地、写作交流、管理纵横、经济视角、文体艺术、图书档案、网络科技、信息工程、科学论坛、理论广角等。
《文渊》好。《文渊》是国家级正规的连续电子期刊，《文渊》杂志是经国家新闻出版广电总局批准的，内容要求极高，因此《文渊》好。《文渊》是经国家新闻出版总局批准备案的文化教育社科综合类专业学术理论期刊。
中国中西医结合杂志中华中医药杂志北京中医药大学学报中药新药与临床药理中药材新中医中国中医基础医学杂志针刺研究辽宁中医杂志中国中药杂志中国实验方剂学杂志中国天然药物等等，太多了，在期刊导航网可以查到，而且一目了然。
期刊论文就是发表在国家正规期刊的论文，有学术性与非学术性之分。包括教育教学累、经济管理类、医药医学类（含护理）、文学艺术类、科技工程类、社科综合等类别。
论点的提炼与概括，应准确、简明，完整，有条理，使人看后就能全面了解论文的意义、目的和工作内容。主要阐述自己的创造性工作及所取得的研究成果在本学术领域中的地位、作用和意义。同时，要严格区分自己取得的成果与导师及他人的科研工作成果。
扩展资料：
题目的写法：
审计论文题目应简明扼要地反映论文工作的主要内容，切忌笼统。由于别人要通过你论文题目中的关键词来检索你的论文，所以用语精确是非常重要的。论文题目应该是对研究对象的精确具体的描述，这种描述一般要在一定程度上体现研究结论。
我们的论文题目不仅应告诉读者这本论文研究了什么问题，更要告诉读者这个研究得出的结论。例如：“在事实与虚构之间：梅乐、卡彭特、沃尔夫的新闻观”就比“三个美国作家的新闻观研究”更专业更准确。
参考资料来源：百度百科-杂志论文
有个中药方面的核心：中国实验方剂学，文章《中国实验方剂学杂志是核心期刊吗》。
期刊由依法设立的期刊出版单位出版。期刊出版单位出版期刊，必须经新闻出版总署批准，持有国内统一连续出版物号，领取《期刊出版许可证》。期刊 就是 专门发表论文的 杂志。期刊 就是专门发表学术论文的地方 期刊 就是一本书，论文 只是这本书里 其中的 几页文章 ！！
还可以 我也在看。 不过我觉得比较适合高三的人看 里面讲的大多数是高三人的经验和名校介绍，还有一些作文 《求学》也分几个版本，看你买什么版本的
以下为个人推荐：文学版——（提高写作水平）《儿童文学》，不要小看了这名字，虽说名字有点那啥，但是内容非常不错，很多短篇小说都有评价，文笔有清新的，有可爱的，还有真人故事，相当不错。《读友》，这杂志就有点小说味道了，封面十分漂亮，分两版，清新版，炫动版。清新版的封面后面还有些相当唯美的图片和句子。内容也十分符合咱中学生的胃口，小说不到，言情出头。《读者》，此乃经典版，有些深奥，不过看起来是想到爽，都是小文章，大道理。还有些小笑话能放松放松，这是休息时的第一推荐。《少年文艺》，也是经典啊，比较童话，文笔挺不错，有点叶圣陶的《稻草人》的感觉。《读书与作文（东方少年）》，这个就比较小学生了，个人不是很喜欢。娱乐版——《中学生青春阅读》，强推！！！我也订了，十分惊喜啊。封面唯美，水彩风，内容也有点儿小说的感觉，而且每期还随机有小说，上次我就看到了《虹之绽》（明晓溪的），插图太爱了！好漂亮的呢！十分潮流时尚，有明星的，还有网络流行的。上次拿到的书里面就有张翰等明星的手机壳图案，超级有爱。《花火》，多为悲剧，文风相当的唯美，典型的日本风。不过是言情的。《我们爱科学》，表小看了这个名字，相当不错，有趣儿，考古的，高科技的，实验的，都有。今天才从我同学那里借了本，强推。《新蕾》，不多说，好书一本。《仙度瑞拉》，言情的，明晓溪主编。文风清新可爱，只是多为连载，不过都是好文啊。……没了，好的没了，真想不出来了，采纳吧，我可是憋了好久的，~(@^_^@)~
《求学》月刊主办单位 广西出版杂志社 编辑出版 求学编辑部 国际标准刊号 ISSN1009-864X 国内统一刊号 CN45-1273/Z 邮发代号 48-108 国外发行代号 联合征定代号 LD451273 创刊日期 2001 出刊日期 每月中旬 报刊版式 16开48页 发行方式 邮局发行
还好吧，可以先到官方网站上看看。
DDS and converter form signal generatorMany applications require low-frequency signal generators that can deliver high-performance, high-resolution signals. This Design Idea presents a circuit that generates frequencies of 0 to 1 MHz. Sinusoidal, triangular, and square-wave outputs are available. You can achieve frequency resolution of better than Hz and phase resolution of better than °; thus, you can program exact coherent frequencies. This feature is useful in digital modulation and frequency-tuning applications. The circuit uses the ADµC831 and AD9834 to generate the required frequencies (Figure 1). You can program the microcontroller from either a PC or a Unix-based workstation. You then program the AD9834 using a three-wire serial interface via the microcontroller. The interface word is 16 bits can program the AD9834 to provide sinusoidal, triangular, and square-wave outputs using the DDS (direct-digital-synthesis) architecture. The chip operates as an NCO (numerically controlled oscillator) using an on-chip, 28-bit phase accumulator, sine-coefficient ROM, and a 10-bit D/A converter. You typically consider sine waves in terms of their magnitude form, A(t)=sin(ωt). The amplitude is nonlinear and is, therefore, difficult to generate. The angular information, on the other hand, is perfectly linear. That is, the phase angle rotates through a fixed angle for each unit in time. Knowing that the phase of a sine wave is linear, and, given a reference interval (clock period), you can determine the phase rotation for that period: ΔPhase=ω dt; ω=ΔPhase/dt=2πf, and f=(ΔPhase×fMCLK)/(2π), where dt=1/fMCLK, and fMCLK is the master this formula, you can generate output frequencies, knowing the phase and master-clock frequency. The phase accumulator provides the 28-bit linear phase. The amplitude coefficients of the output sine wave are stored in digital format in the sine-coefficient ROM. The DAC converts the sine wave to the analog domain. If you bypass the ROM, the AD9834 delivers triangular waveforms instead of sinusoidal waveforms. A square-wave output is also available on the part. Figure 2 shows the various waveforms available from the system. As shown in Figure 1, the sinusoidal/ triangular output waveforms are available on the IOUT pin (Pin 19); and the square wave output is available on the SIGN_BIT_OUT pin (Pin 16). You program the DDS by writing to the frequency registers. The analog output from the part is then: fOUT=fMCLK/228×(frequency-register word).The outputs of the DDS have 28-bit resolution, so effective frequency steps on the order of Hz are possible to a maximum of approximately 1 MHz. Figure 2 shows the typical waveform outputs. Two phase registers are available that allow 12-bit phase resolution. These registers phase-shift the signal by: Phase shift=2π/4096×(phase-register word).A 50-MHz crystal oscillator provides the reference clock for the DDS. The output stage of the DDS is a current-output DAC loaded by an external resistor. A 200Ω resistor generates the required peak-to-peak voltage range. The output is ac-coupled through capacitor C1. The MicroConverter contains two on-chip, 12-bit DACs. DAC1 varies the current through R5, adjusting the full-scale current of the DDS via the FSADJUST pin. The equation to control the full-scale current of the DDS DAC is: IOUT (full-scale)=18×I×, the internal reference of the MicroConverter, and op amp 2 allow for offset control of the output voltage of the DDS. You can program this dc offset to ±10V at 10-bit resolution. When R1=R2 and the gain of op amp 2=8, then the output of op amp 2 is: VOUT=(DAC output–(VREF/2))×8, yielding a ±10V R6 through R9 allow for control of gain through op amp 3. The gain of the op amp is a function of resistor switching, which you enable using the RDRIVE pin available on the MicroConverter. This operation allows for an effective programmable-output amplitude of approximately ±10V p-p. Thus, the circuit allows for programmable sinusoidal and triangular waves, including dc offsets, and the ability to set peak-to-peak amplitude of approximately ±10V. The square wave output on the SIGN_BIT_OUT pin has 0 to 5V amplitude. For low-frequency operation, a lowpass filter normally serves to filter reference-clock frequencies, spurs, and other images. For applications in which the output signal needs amplification, you should use a narrowband filter to filter out unwanted noise before the gain stage. A third-order filter would be good enough to remove most of the unwanted noise. Figure 3 shows a typical spectral plot of the output. Applications for this circuit range from signal-waveform generation to digital modulation. You can use the system in frequency-sweeping and -scanning applications and in resonance applications that use the frequency as an excitation signal to determine circuit resonance. Another useful application is as a reference oscillator for a PLL system.
convertor和converter意思是一样的。英国人更喜欢用convertor。
2-3个月。因为converter论文从见刊到检索，需要一定的时间，具体多久与各converter期刊有关，一般是2-3个月左右。此时期刊方会把发表见刊的论文，送检converter数据库收录。
; Direct Digital SynthesisDirect Digital Synthesis (DDS) is an electronic method for digitally creating arbitrary waveforms and frequencies from a single, fixed source basic DDS circuit consists of an electronic controller, a random-access memory, a frequency reference (usually a crystal oscillator), a counter and a digital-to-analogue converter (DAC). Two operating steps are required to make the device work: we shall call these programming and the programming step, the electronic controller fills the memory with data. Each item of data is a binary word representing the amplitude of the signal at an instant of time. The array of data in the memory then forms a table of amplitudes, with time implied by the position in the table. If, for example, the first half of the table were filled with zeroes and the second half with values of 100%, then the data would represent a square wave. Any other wave shape can be created simply by altering the the running step, the counter (properly called the phase accumulator) is instructed to advance by a certain increment on each pulse from the frequency reference. The output of the phase accumulator (the phase) is used to select each item in the data table in turn. Finally, the DAC converts this sequence of data to an analogue generate a periodic waveform, the circuit is set up so that one pass through the table takes a time equal to the period of the waveform. For example, if the reference frequency is 1 MHz, and the table contains 1000 entries, then a complete pass through the table with a phase increment of 1 will take 1000 / 1 MHz = 1 ms, so the frequency of the output waveform will be 1/(1 ms) = 1 system can generate a higher output frequency simply by increasing the phase increment so that the counter runs through the table more quickly. In the example above, the phase increment is equal to 1, so the next possible frequency is obtained by setting the increment to 2, resulting in a doubling of output frequency. To obtain a finer control of frequency than this, the standard phase increment can be set to, say, 10. This then allows slightly higher or lower output frequencies. For example, increasing the increment to 11 would increase the output frequency by 10%, and reducing it to 9 would decrease the output frequency by the same proportion. The more precision required over the frequency, the more bits are needed in the detailsPractical implementations usually set the size of the lookup table to be a power of 2 and work with 32-bit phase accumulators and phase increments. Usually the upper 8 or 10 bits of the counter are used as lookup table index (lookup table size is 256 or 1024, respectively). The remaining lower bits can be used as a parameter or index to interpolate between the adjacent entries in the lookup table. Often linear interpolation suffices. The source frequency usually comes from a crystal of 1 MHz to 100 highest frequency that can be generated this way depends on the size of the lookup table and the frequency. In order to generate a reasonable representation of the waveform, at least a minimum number of samples must be taken from it. If the phase increment becomes too large, then the counter would step through the lookup table too fast and the result may be a severe distortion of the output exist in both software and hardware. Due to the realtime nature of DDS, software implementations are usually limited to audio of DDS are: function generators, mixers, modulators, and sound 信号发生器 Signal Generator A signal generator, also known variously as a test signal generator, function generator, tone generator, arbitrary waveform generator, or frequency generator is an electronic device that generates repeating electronic signals (in either the analog or digital domains). They are generally used in designing, testing, troubleshooting, and repairing electronic or electroacoustic devices; though they often have artistic uses as are many different types of signal generators, with different purposes and applications (and at varying levels of expense); in general, no device is suitable for all possible , signal generators have been embedded hardware units, but since the age of multimedia-PCs, flexible, programmable software tone generators have also been purpose signal generatorsFunction generatorsA function generator is a device which produces simple repetitive waveforms. Such devices contain an electronic oscillator, a circuit that is capable of creating a repetitive waveform. (Modern devices may use digital signal processing to synthesize waveforms, followed by a digital to analog converter, or DAC, to produce an analog output). The most common waveform is a sine wave, but sawtooth, step (pulse), square, and triangular waveform oscillators are commonly available as are arbitrary waveform generators (AWGs). If the oscillator operates above the audio frequency range (>20 kHz), the generator will often include some sort of modulation function such as amplitude modulation (AM), frequency modulation (FM), or phase modulation (PM) as well as a second oscillator that provides an audio frequency modulation generators are typically used in simple electronics repair and design; where they are used to stimulate a circuit under test. A device such as an oscilloscope is then used to measure the circuit's output. Function generators vary in the number of outputs they feature, frequency range, frequency accuracy and stability, and several other parameters.[edit] Arbitrary waveform generatorsMain article: Arbitrary waveform generatorArbitrary waveform generators, or AWGs, are sophisticated signal generators which allow the user to generate arbitrary waveforms, within published limits of frequency range, accuracy, and output level. Unlike function generators, which are limited to a simple set of waveforms; an AWG allows the user to specify a source waveform in a variety of different ways. AWGs are generally more expensive than function generators, and are often more highly limited in available bandwidth; as a result, they are generally limited to higher-end design and test applications.[edit] Special purpose signal generatorsIn addition to the above general-purpose devices, there are several classes of signal generators designed for specific applications.[edit] Tone generators and audio generatorsA tone generator is a type of signal generator optimized for use in audio and acoustics applications. Tone generators typically include sine waves over the audio frequency range (20 Hz–20 kHz). Sophisticated tone generators will also include sweep generators (a function which varies the output frequency over a range, in order to make frequency-domain measurements), multitone generators (which output several tones simultaneously, and are used to check for intermodulation distortion and other non-linear effects), and tone bursts (used to measure response to transients). Tone generators are typically used in conjunction with sound level meters, when measuring the acoustics of a room or a sound reproduction system, and/or with oscilloscopes or specialized audio tone generators operate in the digital domain, producing output in various digital audio formats such as AES-3, or SPDIF. Such generators may include special signals to stimulate various digital effects and problems, such as clipping, jitter, bit errors; they also often provide ways to manipulate the metadata associated with digital audio term synthesizer is used for a device that generates audio signals for music, or that uses slightly more intricate methods.[edit] Video signal generatorsMain article: Video signal generatorA video signal generator is a device which outputs predetermined video and/or television waveforms, and other signals used to stimulate faults in, or aid in parametric measurements of, television and video systems. There are several different types of video signal generators in widespread use. Regardless of the specific type, the output of a video generator will generally contain synchronization signals appropriate for television, including horizontal and vertical sync pulses (in analog) or sync words (in digital). Generators of composite video signals (such as NTSC and PAL) will also include a colorburst signal as part of the output. Video signal generators are available for a wide variety of applications, and for a wide variety of digital formats; many of these also include audio generation capability (as the audio track is an important part of any video or television program or motion picture).
在国家新闻出版总署网站能查到《读与写》，是正规期刊。刊号 51-1650/G4 主管和主办单位 四川省南充市文学艺术界联合会 最普通的省级期刊，也就中小学老师评个中级职称有用处，评高级就没有用处了，低别太低了
省级期刊，其中读与写(教师教育)、读与写(高中版)已停刊；刊名： 读与写(教育教学刊) Reading and Write Periodical主办： 四川省南充市文联周期： 月刊出版地：四川省南充市语种： 中文;开本： 大16开ISSN： 1672-1578CN： 51-1650/G4邮发代号： 62-297历史沿革：现用刊名：读与写(教育教学刊)创刊时间：2006
读与写中旬没有停刊。读与写》杂志是由中华人民共和国新闻出版总署批准国内外公开出版发行的教育类期刊(主办：四川南充市文联、协办：四川师范大学。
去查下国家新闻出版总署