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Fractal Approach to Tribology of Elastomers
No full textIntroduction
This book summarizes the results of years of research on the problem of strength and fracture of polymers and elastomers. It sets out the modern approach to the strength theory from the standpoint of fractals, the kinetic and thermodynamic theories as well as the meso-mechanic destruction. The dimension reduction method is applied to model the friction processes in elastomers subjected to the complex dynamic loading. Finally, it analyses a relation between the fracture mechanism and the relation phenomena, and provides new experimental data on the sealing nodes in accordance with their specific working conditions where the effect of self-sealing is observed.
Keywords
strength of materialsstrength of solidsphonon destructionelastomer frictionfatigue failurefractal dimensioncritical deformation statenumerical modellingmodelling friction proces
Fundamentals of Spherical Array Processing
No full textThese advantages have motivated an increasing number of researchers in recent
years to develop spherical microphone array systems, to study spherical array
configurations, to develop algorithms for spherical arrays, and to apply these arrays
in a wide range of applications. This growing activity has provided the author with
the motivation and inspiration to write this book, with the aim of presenting the
fundamentals of spherical array processing in a tutorial manner suitable for
researchers, graduate students, and engineers interested in this topic.
The first two chapters provide the reader with the necessary mathematical and
physical background, including an introduction to the spherical Fourier transform
and to the formulation of plane-wave sound fields in the spherical harmonics
domain. The third chapter covers the theory of spatial sampling, which becomes
useful when selecting the positions of microphones to sample sound pressure
functions in space. The next chapter presents various spherical array configurations,
including the popular configuration based on a rigid sphere. The fifth chapter
introduces the concept of beamforming and its basic equations, including popular
design methods such as delay-and-sum and regular beamforming. The following
chapter presents methods for the optimal design of beam patterns, formulated to
achieve various objectives such as maximum robustness, maximum directivity, or
minimum side-lobe level. The final chapter develops more advanced array processing algorithms such as the minimum variance distortionless response (MVDR) algorithm. These algorithms aim to enhance a desired signal while attenuating undesired noise components in the sound field by exploring their unique formulation in the spherical harmonics domain
Digital Subsampling Phase Lock Techniques for Frequency Synthesis and Polar Transmission
No full textThis book explains concepts behind fractional subsampling-based frequency synthesis that is re-shaping today’s art in the field of low-noise LO generation. It covers advanced material, giving clear guidance for development of background-calibrated environments capable of spur-free synthesis and wideband phase modulation. It further expands the concepts into the field of subsampling polar transmission, where the newly developed architecture enables unprecedented spectral efficiency levels, unquestionably required by the upcoming generation of wireless standards.
Guides development of DTC-based Fractional-N Subsampling PLL and Subsampling Polar Transmitters, covering material from fundamental theory, over system level considerations to building block IC implementation;
Describes a fully background-calibrated environment that can used in general context of fractional frequency synthesis and/or phase/frequency modulation;
Presents three IC implementations, showing system level analysis, design methodology, circuit details and measurement results
Fundamentals of Power Semiconductor Devices -2/E
No full textPreparing any book of over 1000 pages is fraught with the peril of typographical
errors and occasional inconsistencies in the nomenclature. In addition, it became
apparent to me that I had not included some topics worthy of discussion in the book.
Consequently, I was pleased to get a very positive response from the editorial
director, Chuck Glaser, at Springer-Science to develop a “second edition” of the
book. Due to advances in printing technology, he encouraged me to use colored
illustrations for the new edition to enhance the clarity of the knowledge being
imparted. In response, I have redrawn most of the figures in color for this book
which should make the material easier to assimilate by the reader.
The second edition contains new information and models in all the chapters. For
those who are already familiar with the first edition, it may be useful to specifically
enumerate the changes made in each chapter.
Readers of this book are encouraged to peruse the above books to gain a
comprehensive knowledge of all the power semiconductor devices that are having
an impact on our lives
Recent Trends and Advances in Wireless and IoT-enabled Networks
No full textThe book covers a variety of topics in Information and Communications Technology (ICT) and their impact on innovation and business. The authors discuss various innovations, business and industrial motivations, and impact on humans and the interplay between those factors in terms of finance, demand, and competition. Topics discussed include the convergence of Machine to Machine (M2M), Internet of Things (IoT), Social, and Big Data. They also discuss AI and its integration into technologies from machine learning, predictive analytics, security software, to intelligent agents, and many more. Contributions come from academics and professionals around the world.
Covers the most recent practices in ICT related topics pertaining to technological growth, innovation, and business;
Presents a survey on the most recent technological areas revolutionizing how humans communicate and interact;
Features four sections: IoT, Wireless Ad Hoc & Sensor Networks, Fog Computing, and Big Data Analytics
DETEKSI TINGKAT KEMATANGAN BUAH PISANG MENGGUNAKAN EKSTRAKSI CIRI WARNA DAN SUPPORT VECTOR MACHINE (SVM) MENGGUNAKAN PERANGKAT AKUISISI RASPBERRY PI
No full textSaat ini, penyortiran untuk pemilihan kualitas buah dilakukan secara manual hanya dengan penglihatan manusia dan membutuhkan waktu yang lama. Setiap orang memiliki argument yang berbeda sehingga ketika menentukan tingkat kematangan buah cenderung subjektif. Oleh karena itu, untuk mengatasi hal tersebut diberikan inovasi baru yaitu dengan bantuan komputer dan Raspberry Pi. Raspberry Pi digunakan untuk mendukung fleksibilitas karena menggunakan Internet (wireless).
Pada penelitian ini penyortiran dilakukan pada buah pisang karena pisang merupakan buah yang sangat digemari masyarakat dan produksi pisang di Indonesia melimpah. Pengklasifikasian tingkat kematangan pisang berdasarkan warna dibedakan menjadi 4 yaitu mentah, mengkal, matang, dan matang sekali. Penelitian ini menggunakan ekstraksi ciri Colour Grid dengan RGB dan YCbCR dan klasifikasi SupportVector Machine (SVM).
Sistem menggunakan 120 sampel citra sebagai data latih yang disimpan di dataset dan 100 citra uji yang tidak disimpan di dataset yang akan digunakan sebagai citra pengujian. Citra ditangkap melalui webcam lalu dihubungkan dengan Raspberry Pi dan kemudian diproses di komputer. Software yang digunakan adalah Matlab R2018a. Citra diolah dengan melakukan ekstraksi ciri Colour Grid dan mengambil warna RGB dan YCbCr serta klasifikasinya menggunakan SVM. Tingkat akurasi kematangan buah dapat dihitung dengan perbandingan jumlah data yang benar dengan jumlah data secara keseluruhan. Pada penelitian ini diperoleh akurasi sebesar 94% pada model SVM One Against One (OAO).
Kata Kunci: Raspberry Pi, Webcam, Colour Grid, RGB, YCbCr, Support Vector Machine (SVM)
The Neuro-Consumer: Adapting Marketing and Communication Strategies for the Subconscious, Instinctive and Irrational Consumer\u27s Brain
No full textNeuroscientific research shows that the great majority of purchase decisions are irrational and driven by subconscious mechanisms in our brains. This is hugely disruptive to the rational, logical arguments of traditional communication and marketing practices and we are just starting to understand how organizations must adapt their strategies. This book explains the subconscious behavior of the "neuro-consumer" and shows how major international companies are using these findings to cast light on their own consumers’ behavior.
Written in plain English for business and management readers with no scientific background, it focuses on:
• how to adapt marketing and communication to the subconscious and irrational behaviors of consumers;
• the direct influence of the primary senses (sight, hearing, smell, taste, touch) on purchasing decisions and the perception of communications by customers’ brains;
• implications for innovation, packaging, price, retail environments and advertising;
• the use of "nudges" and artifices to increase marketing and communication efficiency by making them neuro-compatible with the brain’s subconscious expectations;
• the influence of social media and communities on consumers’ decisions – when collective conscience is gradually replacing individual conscience and recommendation becomes more important than communication; and
• the ethical limits and considerations that organizations must heed when following these principles.
Authored by two globally recognized leaders in business and neuroscience, this book is an essential companion to marketers and brand strategists interested in neuroscience and vital reading for any advanced student or researcher in this are
Succeeding with AI: How to Make AI Work for Your Business
No full textCompanies small and large are initiating AI projects, investing vast sums of money on software, developers, and data scientists. Too often, these AI projects focus on technology at the expense of actionable or tangible business results, resulting in scattershot results and wasted investment. Succeeding with AI sets out a blueprint for AI projects to ensure they are predictable, successful, and profitable. It’s filled with practical techniques for running data science programs that are cost effective and focused on the right business goals.
About the technology
Succeeding with AI requires talent, tools, and money. So why do many well-funded, state-of-the-art projects fail to deliver meaningful business value? Because talent, tools, and money aren’t enough: You also need to know how to ask the right questions. In this unique book, AI consultant Veljko Krunic reveals a tested process to start AI projects right, so you’ll get the results you want.
About the book
It sets out a framework for planning and running cost-effective, reliable AI projects that produce real business results. This practical guide reveals secrets forged during the author’s experience with dozens of startups, established businesses, and Fortune 500 giants that will help you establish meaningful, achievable goals. In it, you’ll master a repeatable process to maximize the return on data-scientist hours and learn to implement effectiveness metrics for keeping projects on track and resistant to calcification
Metodologi Penelitian : Panduan Lengkap Penelitian dengan Mudah
No full textPada buku ini, Penulis menyajikan banyak pembahasan seputar metodologi penelitian secara kuantitatif dan kualitatif dari berbagai sumber referensi yang relevan dengan pemahaman yang mudah ditangkap oleh Pembaca. Bab 1 membahas tentang pemahaman terkait ilmu pengetahuan dan penelitian, mulai dari hakikat/esensi, makna, perbedaan paradigma ilmu pengetahuan dan penelitian, cara berpikir, hingga pemikiran analitis dan sintetis. Bab 2 membahas tentang tren fokus dan kemanfaatan penelitian yang terdapat kecenderungan penelitian yang dibahas hingga memilih topik dan metode penelitian juga penjelasan tentang deduktif dan induktif hingga menjelaskan terkait tujuan dan kemanfaatan penelitian. Bab 3 membahas tentang penentuan judul dan problematik penelitian berdasarkan situasi, kondisi, dan fenomena yang terjadi hingga terbentuk rumusan permasalahan penelitian dengan beragam pertimbangan yang dapat dipelajari. Bab 4 membahas tentang pendekatan penelitian baik secara ilmiah maupun non-ilmiah beserta penjelasan yang menjadi perbedaannya.
Bab 5 membahas tentang desain dan perencanaan penelitian yang di dalamnya juga menjelaskan cakupan desain pada proposal penelitian dan tak hanya mengulas bagaimana mengkaji dan memantapkan proposal penelitian, tetapi juga bagaimana cara mengatur personalia (tim peneliti), usulan rencana anggaran biaya penelitian, dan jadwal pelaksanaan kegiatan penelitian. Bab 6 membahas tentang karakteristik data, manfaat dan fungsi data, klasifikasi sumber data serta urgensi data dalam penelitian. Bab 7 membahas tentang konsep dan konseptualitas penelitian, cara membuat kerangka konsep penelitian, karakteristik variabel, hingga penjelasan pada hubungan antarvariabel. Bab 8 membahas tentang karakteristik, perumusan hingga perbedaan antara hipotesis dan proposisi penelitian. Bab 9 membahas tentang prosedur penelitian yang terdapat perbedaan prosedur antara penelitian eksakta dengan penelitian non-eksakta, penjelasan melalui flowchat dan skema alur penelitian hingga pemahaman tentang standar operasional prosedur (SOP) penelitian.
Bab 10 membahas tentang karakteristik dan peranan teori penelitian, bagaimana memunculkan teori melalui pemikiran yang lateral (out of the box), juga penjelasan tentang deskripsi dan karakteristik jenis terkait studi kepustakaan. Bab 11 membahas tentang jenis, format, dan metode penelitian hingga pertimbangan dalam menentukan metode penelitian, antara metode penelitian kuantitatif ataupun kualitatif. Bab 12 membahas tentang ruang lingkup penelitian serta objektivitas dan subjektivitas penelitian. Bab 13 membahas tentang instrumen penelitian dan langkah-langkah prosedural pembuatan instrumen penelitian tersebut (baik secara kuantitatif maupun kualitatif) serta menjelaskan tentang focus group discussion (FGD) dan validitas hingga reliabilitas suatu penelitian. Bab 14 membahas tentang populasi, sampel, dan sampling.
Bab 15 membahas tentang jenis skala, cara penyusunan skala, dan prinsip pengukuran skala. Bab 16 membahas tentang definisi, fungsi, tujuan, peranan, karakteristik, hingga analisis terkait statistik penelitian. Bab 17 membahas tentang teknik pengumpulan data dan teknik pengolahan data baik secara kuantitatif maupun kualitatif. Bab 18 membahas tentang prinsip-prinsip dalam menganalisis data hingga metode analisis data (kuantitatif dan kualitatif). Bab 19 membahas tentang prosedur pembuatan laporan penelitian secara sistematis dengan beberapa yang hal yang perlu diperhatikan, adanya sasaran penyampaian yang tepat hingga mengulas kelemahan dalam membuat/menyusun laporan penelitian. Bab 20 membahas tentang interpretasi hasil penelitian dan diskusi teoretis yang relevan antara teori yang digunakan dengan analisis hasil penelitian. Bab 21 membahas tentang karakteristik, peran, problematik, serta etika yang dimiliki sebagai seorang peneliti dalam melakukan penelitian. Bab 22 membahas tentang tata cara penulisan sumber referensi dan daftar pustaka
Utara
No full textKatanya yang terbaik adalah menjadi diri sendiri. Katanya juga, menjadi diri sendiri membuatmu istimewa. Nyatanya, orang-orang suka mengatur seenaknya. Seringnya, yang tak mereka suka akan mereka cerca. Rasanya, Uttam dan Amanda ingin membuktikan kepada dunia, bahwa sedikit berbeda tak akan merugikan siapa-siapa. Mereka saling menggenggam, bersama menggantungkan harapan. Sayangnya, manusia memang sering lupa, bahwa berharap pada sesamanya sering kali hanya akan mendatangkan luka