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"Bauksit, sebagai bijih utama aluminium, mempunyai kualitas yang baik jika mengandung kadar alumina (Al2O2) yang tinggi dan reaktif silika (RSiO2) rendah. Penelitian ini dilakukan untuk memetakan distribusi spasial kadar Al2O3 dan RSiO2 menggunakan metode interpolasi ordinary kriging (OK) dan inverse distance weighting (IDW). Fitting variogram dilakukan dengan model spherical, exponential, dan gaussian, dan pemilihan variogram dilakukan dengan parameter residual sum of square (RSS). Dalam proses interpolasi IDW menggunakan power 1, 2, 3 dan 4. Evaluasi metode interpolasi terbaik dilakukan dengan parameter root mean square error (RMSE) dan mean error (ME). Hasil penelitian menunjukkan bawa metode interpolasi OK lebih baik dibandingkan dengan metode IDW. Peta hasil interpolasi OK menggambarkan bahwa distribusi bauksit dengan konsentrasi kadar Al2O3 ≥ 48% dan RSiO2 ≤ 5% menempati kurang lebih 50% dari luas daerah penelitian. Distribusi bauksit dengan kadar tersebut masih terbuka dan menerus ke arah utara, barat dan tenggara."

"Inverse limits with set-valued functions are quickly becoming a popular topic of research due to their potential applications in dynamical systems and economics. This brief provides a concise introduction dedicated specifically to such inverse limits. The theory is presented along with detailed examples which form the distinguishing feature of this work. The major differences between the theory of inverse limits with mappings and the theory with set-valued functions are featured prominently in this book in a positive light. "

"Inverse limits provide a powerful tool for constructing complicated spaces from simple ones. They also turn the study of a dynamical system consisting of a space and a self-map into a study of a (likely more complicated) space and a self-homeomorphism. In four chapters along with an appendix containing background material the authors develop the theory of inverse limits. The book begins with an introduction through inverse limits on [0,1] before moving to a general treatment of the subject. Special topics in continuum theory complete the book. Although it is not a book on dynamics, the influence of dynamics can be seen throughout; for instance, it includes studies of inverse limits with maps from families of maps that are of interest to dynamicists such as the logistic and the tent families."

"ABSTRAKBiasanya dalam jaringan telekomunikasi yang besar, protokol yang digunakanberaneka ragam. Oleh karena itu dibutuhkan suatu mediation device yang memiliki fungsiuntuk memetakan protokol yang heterogen menjadi sebuah framework definisi.Framework ini diberi code name Hanuman framework. Pada framework ini diperkenalkanmetoda minimalisasi invocation delay dengan menggunakan local interface pada JavaVirtual Machine (JVM) container tunggal dan metode bulk read pada pengaksesan atributentity bean secara berulang. Simulasi menunjukkan perbandingan invocalion delay untuklocal interface vs. remote interface adalah 60,44% dan perbandingan waktu transaksi bulkread vs. single read adalah 26,91% untuk pernbacaan 320 atribut.Gangguan yang terjadi dalam jaringan telekomunikasi dapat mengakibatkanrambatan masalah, oleh karena itu sumber penyebab gangguan harus dapat dideteksi dandikoreksi. Penyebab gangguan diberi nama problem dan akibat gangguan tersebut akanmemberikan alarm yang diberi nama symptom. Dalam penelitian ini diperkenalkan pulametoda inverse symptom dengan pendekatan Humming Distance, yaitu symptom daninversinya, secara teoritis akan memiliki kemampuan yang sama untuk menentukanproblem yang sebenamya, sehingga dapat direduksi. Hasil simulasi menunjukkan metodaini dapat mereduksi symptom hingga 56,94%. Posisi gangguan yang terjadi di suatujaringan dapat diketahui dengan menghitung tingkat korelasi antara problem dengansymptom. Dalam disertasi ini digunakan Bayesian Expectation Maximization (BEM), yaitusuatu teknik estimasi likelihood untuk mengatasi informasi yang tidak lengkap, hilang, ataurusak pada saat observasi pembentukan knowledge base. Hasil simulasi dengan sampledata 1000 buah dan missing data sekitar 70% menunjukkan bahwa metoda ini masihmampu untuk membentuk knowledge based, dan mencari root of fault.

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ABSTRACTIn a large telecommunication network, there are various of protocols that available.Hence there is a need for a mediation device that maps protocols with similar function ofpurpose to be as a definition homework. The framework?s code name is ?Hanuman?framework. This framework introduces invocation delay minimization method a localinterface method on Java Virtual Machine (JVM) single container and bulk readingmethod in accessing entitiy bean attribute continuously. The simulation shows that thecomparison of invocation delay gives local interface vs. Remote interface is 60.44% andthe transaction time of bulk read vs. Single read is 26. 91 % for the 320 attributes reading.A fault in a network can propagate to the other side of the network that generatesignyicant symptoms. The source of faults that occur in a communication network shouldbe detected and corrected The cause of these faults is called problem' and those faultswill generate alarms which named ?symptom ?. This research also introduces inversesymptom method with Hamming distance approach. This method states that symptoms andtheir inverses theoretically have the same meaning and therefore they can be reduced. Thesimulation shows that the reduction of symptoms number due to symptom propagation,and the used inverse symptom method will increase up to 56. 94%. Location of faults thatoccure in a network can be determinted by calculating the correlation level betweenproblems that cause the problem and symptoms, which is event detected in fault locatordevice. This dissertation use Bayesian Expectation Maximization (BEM) that is likelihoodestimation method to be used for overcome hidden information, missing data, or brokendata during observation in knowledge base development. Simulation result with 1000sample data and around 70% missing data shows that the method is capable to developknowledge based and to find the root of fault."

"Penelitian ini menganalisa dampak pengembangan investasi dan aktivitas hilirisasi bauksit oleh PT Bintan Alumina Indonesia (PT BAI) di Provinsi Kepulauan Riau terhadap perekonomian Indonesia dengan model input-output yang diterapkan pada Provinsi Kepulauan Riau, Provinsi Kalimantan Barat, dan Indonesia. Pengenaan stimulus pada sektor yang berkaitan dengan fase konstruksi dan fase operasional industri alumina dan aluminium di PT BAI merupakan konsep yang mendasari bagaimana permintaan akhir sektor lainnya terdampak. Peningkatan perekonomian ditandai dengan meningkatnya nilai output, PDRB dan PDB, pendapatan masyarakat, dan penciptaan kesempatan kerja. Selama fase konstruksi PT BAI (2016-2029), secara garis besar memberikan dampak yang positif terhadap peningkatan output, pendapatan rumah tangga, PDRB, dan penciptaan kesempatan kerja di 52 sektor industri di Provinsi Kepulauan Riau. Selama fase operasional, dampak ekonomi dihitung melalui tiga skenario yang diterapkan pada Provinsi Kepulauan Riau, Kalimantan Barat, dan Indonesia. Adapun pada fase operasional, dengan mengasumsikan penerapan hilirisasi sepenuhnya atas Produk PT BAI ke dalam pasar domestik menunjukkan dampak terbesar secara nasional dengan dampak peningkatan nilai output Indonesia hingga tahun 2030 mencapai Rp547,07 triliun, pertumbuhan PDB rata-rata 0,099 persen per tahun, peningkatan pendapatan nasional mencapai Rp74,22 triliun hingga tahun 2030, dan penciptaan kesempatan kerja rata-rata 107.105 orang per tahun di 52 sektor industri di Indonesia. Adapun untuk mencapai target optimal dari keberadaan PT Bintan Alumina Indonesia (BAI) dalam rantai nilai hilirisasi bauksit domestik, diperlukan penguatan alur hilirisasi dan sektor industri turunan alumina dan aluminium di dalam negeri. Dukungan insentif fiskal, penetapan aturan hukum pro-hilirisasi, dan perlindungan investor penting untuk diterapkan namun Pemerintah juga perlu memperhatikan isu dependensi strukturalisme serta risiko geopolitik dalam upaya mengimplementasikan kebijakan hilirisasi bauksit secara domestik sepenuhnya.

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This research analyzes the impact of investment and bauxite downstream activities by PT Bintan Alumina Indonesia (PT BAI) on the Indonesian economy using the input-output method applied to the Riau Islands Province, West Kalimantan Province and Indonesia. The imposition of stimulus on sectors related to the construction phase and operational phase of the alumina and aluminum industry in the Galang Batang SEZ is the concept that underlies how final demand in other sectors is affected. Economic improvement is characterized by increased output, GDRP, people's income, and the creation of job opportunities.

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During the construction phase of PT BAI (2016-2029), it generally had a positive impact on the increase in output, income, average GRDP, and average job creation in 52 industrial sectors in the Riau Islands Province. During the operational phase, calculated through three scenarios applied to the Riau Islands Province, West Kalimantan, and Indonesia, with the assumption of full downstreaming of PT BAI's products into the domestic market, shows the greatest impact. The impact includes the increase of Indonesia's output value until 2030 reaching Rp547.07 trillion, an average annual GDP growth of 0.099 percent, a national income increase until 2030 reaching Rp74.22 trillion, and an average job creation of 107,105 people per year in 52 industrial sectors in Indonesia. To achieve the optimal target of PT Bintan Alumina Indonesia's (BAI) presence in the domestic bauxite value chain, strengthening the downstream process and downstream industries of alumina and aluminum domestically is needed. Fiscal incentives, the establishment of pro-downstream regulations, and investor protection are crucial to implement, however The Government also needs to consider issues of structural dependency and geopolitical risks in efforts to fully implement the domestic downstreaming policy for bauxite."

"This book is primarily devoted to topics related to matrix versions of classical interpolation and moment problems. The major themes include Schur analysis of nonnegative Hermitian block Hankel matrices and the construction of Schur-type algorithms. This book also covers a number of recent developments in orthogonal rational matrix functions, matrix-valued Carathéodory functions and maximal weight solutions for particular matricial moment problems on the unit circle.​"

"A study, by two of the major contributors to the theory, of the inverse scattering transform and its application to problems of nonlinear dispersive waves that arise in fluid dynamics, plasma physics, nonlinear optics, particle physics, crystal lattice theory, nonlinear circuit theory and other areas. A soliton is a localized pulse-like nonlinear wave that possesses remarkable stability properties. Typically, problems that admit soliton solutions are in the form of evolution equations that describe how some variable or set of variables evolve in time from a given state. The equations may take a variety of forms, for example, PDEs, differential difference equations, partial difference equations, and integrodifferential equations, as well as coupled ODEs of finite order. What is surprising is that, although these problems are nonlinear, the general solution that evolves from almost arbitrary initial data may be obtained without approximation. For such exactly solvable problems, the inverse scattering transform provides the general solution of their initial value problems. It is equally surprising that some of these exactly solvable problems arise naturally as models of physical phenomena. Simply put, the inverse scattering transform is a nonlinear analog of the Fourier transform used for linear problems. Its value lies in the fact that it allows certain nonlinear problems to be treated by what are essentially linear methods."