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Abstrak :
Perkembangan kota dan kemajuan teknologi telah mengembangkan penggunaan alat angkut yang bersifat kolektif. Sebuah kota metropolitan mensyaratkan ketersediaan sistem transportasi umum yang baik. Sistem ini harus pula didukung infrastruktur yang terencana baik moda transportasi maupun sarana pendukungnya, termasuk terminal dan halte. Terminal harus dapat menjalankan fungsinya dengan efektif dan memudahkan semua kalangan pengguna secara umum. Dalam hal ini, Tanda Informasi sebagai kebutuhan elementer di terminal terkadang terlupakan fungsinya. Bagaimana sebuah bahasa visual dan atau gambar tertulis yang sistematis dapat menavigasi, memandu, memudahkan, mengamankan dan melindungi manusia yang berlalu lalang dengan berbagai tujuan yang berbeda daiarn sebuah ruang publik. Terminal bus Blok M sebagai terminal yang paling representatif di DKI, saat ini memang masih berfungsi sebagai terminal, pertemuan bus dengan penumpang naik-turun penumpang. Tetapi aspek pelayanan terhadap kemudahan informasi, kenyamanan, dan keselamatan para penumpangnya sudah terkubur bersama mati fungsinya sistem tanda informasi yang ada. Kesemrawutan pun terjadi dan masih terus berlangsung. Penelitian ini bermaksud mengurai permasalahan dan hubungan kesemrawutan dengan keberfungsian tanda informasi yang ada. Dilakukan secara kualitatif melalui observasi dan survei lapangan, kajian teori hingga pengamatan ke beberapa kota di negara lain dengan harapan akan ditemukan titik-titik permasalahan yang dapat diuraikan dan dibenahi nantinya. Dari hasil pengamatan dan hasil penelitian yang dilakukan, dapat disimpulkan bahwa terminal BIokM sebagai terminal transit masih dapat berfungsi semata sebagai alat distribusi penumpang. Tetapi sistem tanda Informasi yang mendukungnya, walaupun masih cukup disadari keberadaanya, sudah tidak berfungsi sesuai tujuannya. Ribuan pengguna terminal yang berinteraksi tanpa panduan dan kejelasan informasi merupakan pangkal kesemrawutan yang terjadi. Penulis berasumsi bahwa pembenahan tanda informasi akan berperan penting .dalam memperbaiki kualitas terminal, tetapi dengan menyadari sepenuhnya terhadap sayap persoalan secara makro. DiperIukan penelitian lanjutan yang menyoroti masalah besar lain yang saling berkaitan di terminal BlokM, diantaranya : masalah efisiensi arsitektural ruang publik, masalah manajemen dan swastanisasi terminal, masalah kualitas alat transportasi yang melalui terminal, masalah sosial (kaki lima) di terminal, masalah prilaku dan disiplin masyarakat dan masalah aturan dan hukum yang dapat diberlakukan dalam mendukung kelancaran transportasi perkotaan.

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The progression of the city and the advancement of technology has created the need and use for collective transportation. A metropolitan city's regulation neccesities are for a good system of transportation. This system has to be able to support the well planned infrastructure of transportation and all the supporting aids that go along with it; this includes its terminals and stations. A terminal's usage is targeted to be accessible and easy for all persons in the general public. In correlation to this point, the sign guide's function as the elementary need of a terminal is often forgotten. Focusing on this point however, a visual language and or picture written systematically is able to navigate, guide, facillitate easily, protect and safe-guard an individual that is busy going about their daily lives with different purposes within a public space. The bus terminal, BlokM Terminal, as the most represented terminal in DKI at the present moment still functions as a terminal, a bus station with commuters entering and departing. But the service aspect towards the accessibility of information, comfort, and the safety of its commuters have become buried along with the dead dysfunctions of the information signs system that is existing today. Much chaos still occurs and still continues to continue. This research is focused towards tackling the problems and relationships of the chaos that occurs within the functioning of information signs that exists today. This is done qualitatively through observation and field surveys, theoretical reviews until exchange studies; with the hope that the main points of the problems are able to arise to the surface and be explained and fixed at a latter time. From observation results and research that was completed, it is possible to conclude that the Blok M terminal as a transit terminal is still able to function as a transport distribution tool for the commuters. But the information signage that is supposed to support the terminal although still in the awareness of the public, is not currently functioning as it is purposed to be. Thousands of commuters interact without any clear guide or information clarity which is the center or reason behind the chaos that occurs in public transit terminals. The writer assumes that with fixing the information signs, its role is significant to improving the quality of the terminal. Realizing the macro affects of the problem at hand, further research is needed to assess the other major problems which accompany and interrelate with the Blok M terminal. Such problems are : architectural efficiency of a public space, management problems (terminal privatization), quality aspects of the transport that enters and departs from the terminal, social problems (side-road) at the terminal, problems of social behavior and conduct, public discipline, and the regulations and laws that are applicable in supporting the ease of metropolitan transportation.

Abstrak :
Fokus utama penelitian ini adalah merancang dan mengembangkan prototipe sistem registrasi IRS berbasis event-driven architecture serta mengevaluasi sistem tersebut dengan eksperimen chaos engineering. Implementasi sistem menggunakan Spring Boot framework, Apache Kafka sebagai event broker, dan Amazon Web Service (AWS) untuk infrastruktur. Pengujian dilakukan dengan melakukan API testing untuk menguji fungsionalitas sistem dan load testing untuk menguji reliability sistem. Terakhir, eksperimen chaos engineering dengan metode chaos monkey dilakukan untuk menguji resilience sistem. Hasil pengujian menunjukkan bahwa fungsionalitas sistem sebagai layanan IRS bekerja dengan baik. Sistem dapat tetap bekerja di bawah tekanan 40.000 mahasiswa yang disimulasikan mengakses sistem bersamaan. Pada kondisi chaos di mana beberapa server dimatikan, sistem masih dapat berfungsi dengan baik dan mahasiswa masih dapat menggunakan layanan registrasi IRS tanpa masalah. ......The main focus of this research is to design and develop a prototype of an event-driven architecture based course registration service, and to evaluate the system with chaos engineering. The system was implemented using Spring Boot as its framework, Apache Kafka as the event broker, and Amazon Web Service (AWS) for infrastructure. The testing was done by implementing API testing for evaluating the system’s functionality and load testing to evaluate system’s reliability. Finally, a chaos engineering experiment was carried out to evaluate the resilience of the system. The result shows that the system can deliver its functionality as a course plan registry pretty well. The system was able to work under the pressure of 40.000 student simulated to access the system simultaneously. In the chaos condition where several server were taken down, the system still performs well and able to provide the service without any problem for the students.

Abstrak :
Mathematical symmetry and chaos come together to form striking, beautiful color images throughout this impressive work, which addresses how the dynamics of complexity can produce familiar universal patterns. The book, a richly illustrated blend of mathematics and art, was widely hailed in publications as diverse as the New York Review of Books, Scientific American, and Science when first published in 1992. This much-anticipated second edition features many new illustrations and addresses the progress made in the mathematics and science underlying symmetric chaos in recent years; for example, the classifications of attractor symmetries and methods for determining the symmetries of higher dimensional analogues of images in the book. In particular, the concept of patterns on average and their occurrence in the Faraday fluid dynamics experiment is described in a revised introductory chapter.

Abstrak :
Pada era ­big data saat ini, semua data dan informasi tersimpan dalam bentuk digital. Data dan informasi tersebut sangat rawan untuk dicuri, dirusak, atau dimanipulasi. Untuk itu, usaha pengamanan data dan informasi digital merupakan hal yang sangat penting dan mendesak. Lebih khusus lagi jika data dan informasinya bersifat rahasia atau terbatas. Terdapat dua jenis metode pengamanan data, yaitu kriptografi dan steganografi. Penelitian ini bertujuan untuk mengamankan citra digital grayscale ke dalam citra digital warna dengan melakukan teknik enkripsi berbasis chaos dan dilanjutkan dengan melakukan teknik penyisipan LSB. Dalam penelitian ini, fungsi chaos yang digunakan untuk membangkitkan keystream adalah MS map dan teknik penyisipan LSB yang digunakan adalah teknik penyisipan LSB-1, LSB-2, atau LSB-4. Barisan keystream yang dihasilkan oleh MS map terbukti acak dengan melakukan uji keacakan barisan kunci yang dikeluarkan oleh NIST. Sensitivitas kunci dari MS map mencapai 10-17. Ukuran ruang kunci sebesar 6,48 × 10643. Nilai PSNR antara citra awal dan citra terdekripsi adalah tak hingga, artinya teknik enkripsi yang digunakan merupakan teknik enkripsi dengan skema lossless. Nilai PSNR antara cover image dan stego image lebih besar atau sama dengan 40, artinya kualitas stego image yang dihasilkan cukup baik, yakni relatif sama dengan cover image jika dilihat oleh sistem penglihatan manusia.

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In this era of big data, all data and information are stored in digital form. The data and information are very vulnerable to being stolen, damaged, or manipulated. For this reason, efforts to secure digital data and information are very important and necessary. More specifically if the data and information are confidential or limited. There are two types of data security methods, namely cryptography and steganography. This study investigated to secure grayscale digital images into color digital images by performing chaos-based encryption techniques and followed by doing LSB insertion techniques. In this study, chaos function employed to generate keystream was MS map, and LSB insertion techniques employed were LSB-1, LSB-2, or LSB-4. The sequence of keystream generated by MS map has been proven to be random through testing the randomness of key sequences issued produced by NIST. The key sensitivity of the MS map reached 10^{-17. The size of the keyspace was 6,48 × 10643. The PSNR value between the original image and decrypted image was infinite, meaning that the encryption technique employed was an encryption technique with a lossless scheme. The PSNR value between the cover image and the stego image was more than or equals to 40, showed that the quality of the stego image produced was quite good, which was relatively the same as the cover image when viewed by the human visual system.}

Abstrak :
Tulisan ini membahas bagaimana dinamika order dan chaos yang terjadi pada proses perubahan fasad bangunan. Dalam fasad bangunan, dinamika antara order dan chaos terjadi karena adanya aspek manusia di mana kehadirannya dapat mengintervensi desain yang awalnya ideal dan mematuhi serangkaian rules dari order, menjadi sesuatu yang irregular dan menghasilkan chaos. Penulisan ini akan menelusuri perubahan fasad Kampung Akuarium, yang diawali dengan menganalisis order awal dalam elemen fasad bangunan, melalui aspek bentuk geometri dan rules-nya. Dilanjutkan dengan menganalisis kebutuhan manusia yang muncul sebagai fenomena contingency, sehingga memicu chaos yang menyebabkan hadirnya ‘irregular forms’. Chaos yang hadir kemudian ditelusuri lebih lanjut terkait axioms apa saja yang kamudian berlaku untuk mengatur chaos di Kampung Akuarium, sehingga dari axioms tersebut dapat terlahir sebuah “new order”. Dengan mempelajari dinamika antara order dan chaos, perancang dapat mengintegrasikan aspek fungsi sebagai estetika baru dalam fasad bangunan, mengubah pandangan arsitektur menjadi tentang hubungan dinamis antara keduanya, bukan sekadar tentang order atau chaos. ......This paper discusses the dynamics of order and chaos that occur in the process of changing building facades. In building facades, the interplay between order and chaos arises due to the human aspect, whereby their presence can intervene in the initially ideal design and adhere to a set of orderly rules, resulting in something irregular and chaotic. This paper will explore the transformation of the facade of Kampung Akuarium, commencing with an analysis of the initial order in the elements of the building facade, focusing on geometric forms and their associated rules. Subsequently, it will delve into the examination of the emerging human needs as a contingency phenomenon, which triggers chaos leading to the emergence of ‘irregular forms’. The ensuing chaos will be further scrutinized to ascertain the axioms that govern the chaos in Kampung Akuarium, thus giving rise to a "new order" from these axioms. By studying the dynamics between order and chaos, designers can integrate functional aspects as a new aesthetic in the facade of a building, transforming the perception of architecture into one centered around the dynamic relationship between the two, rather than merely being about order or chaos.

Abstrak :
Kalkulus fraksional adalah topik yang secara khusus membahas tentang integral dan turunan fraksional, yakni integral dan turunan berorde bilangan real positif. Kalkulus fraksional telah diterapkan dalam berbagai bidang pemodelan, salah satunya pada model sistem dinamik yang bersifat chaos. Chaos merupakan kondisi saat solusi dari suatu sistem deterministik terus bergerak secara aperiodik, namun terbatas dan bersifat sensitif terhadap perubahan nilai awal. Sistem chaos umumnya dikenal dibangun oleh sistem persamaan diferensial berorde integer, namun berbagai penelitian telah menunjukkan bahwa chaos juga dapat terjadi pada sistem dengan turunan berorde fraksional. Pada skripsi ini dibahas chaos pada sistem Burke-Shaw fraksional berorde sama. Pada model sistem Burke-Shaw fraksional, diperoleh hasil bahwa chaos terjadi saat orde turunan fraksional alpha > alpha*, dengan alpha* suatu konstan. Fenomena chaos pada sistem Burke-Shaw fraksional untuk berbagai orde turunan fraksional alpha diselidiki dengan mengamati potret fase dari solusi sistem dan nilai eksponen Lyapunov yang diperoleh secara numerik. Dari simulasi yang dilakukan untuk beberapa orde turunan fraksional yang berbeda, didapat hasil yang konsisten bahwa sistem bersifat stabil untuk alpha < alpha*, dan bersifat chaos saat alpha > alpha*. Dinamik dari solusi sistem juga diamati untuk melihat sensitivitas solusi terhadap perbedaan nilai awal yang kecil. ......Fractional calculus is a topic that specifically discussed about fractional integral and fractional derivative, which means integral and derivative with order of positive real number. Fractional calculus has been applied to various fields of mathematical modelling, one of them is in the model of chaotic dynamical system. Chaos is a condition where the solution of a deterministic system keep moving in aperiodic state, but is bounded and sensitive with the change of initial conditions. Generally a chaotic system is built by differential equations with integer order, but various work has showed that chaos can be exhibited in system with fractional order. In this thesis chaotic behavior of Burke-Shaw commensurate order fractional system is discussed. From the fractional Burke-Shaw system we obtained the result that chaos will happen when the fractional derivative order alpha > alpha*, where alpha* is a constant. Chaotic phenomena of fractional Burke-Shaw system with various fractional derivative order alpha is investigated by observing the potrait phase of system's solution and Lyapunov exponents by some numerical calculations. By simulation that is done with some different values of fractional order alpha of the derivative, we obtained consistent result that shows the system is stable for alpha < alpha* and is chaotic for alpha > alpha*. The dynamic of the system's solutions is also observed to see the solution's sensitivity with small difference of initial conditions.

Abstrak :
Fokus utama penelitian ini adalah merancang dan mengembangkan prototipe sistem registrasi IRS berbasis event-driven architecture serta mengevaluasi sistem tersebut dengan eksperimen chaos engineering. Implementasi sistem menggunakan Spring Boot framework, Apache Kafka sebagai event broker, dan Amazon Web Service (AWS) untuk infrastruktur. Pengujian dilakukan dengan melakukan API testing untuk menguji fungsionalitas sistem dan load testing untuk menguji reliability sistem. Terakhir, eksperimen chaos engineering dengan metode chaos monkey dilakukan untuk menguji resilience sistem. Hasil pengujian menunjukkan bahwa fungsionalitas sistem sebagai layanan IRS bekerja dengan baik. Sistem dapat tetap bekerja di bawah tekanan 40.000 mahasiswa yang disimulasikan mengakses sistem bersamaan. Pada kondisi chaos di mana beberapa server dimatikan, sistem masih dapat berfungsi dengan baik dan mahasiswa masih dapat menggunakan layanan registrasi IRS tanpa masalah. ......The main focus of this research is to design and develop a prototype of an event-driven architecture based course registration service, and to evaluate the system with chaos engineering. The system was implemented using Spring Boot as its framework, Apache Kafka as the event broker, and Amazon Web Service (AWS) for infrastructure. The testing was done by implementing API testing for evaluating the system’s functionality and load testing to evaluate system’s reliability. Finally, a chaos engineering experiment was carried out to evaluate the resilience of the system. The result shows that the system can deliver its functionality as a course plan registry pretty well. The system was able to work under the pressure of 40.000 student simulated to access the system simultaneously. In the chaos condition where several server were taken down, the system still performs well and able to provide the service without any problem for the students.