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Chorus, Caspar G.
"This tutorial presents a hands-on introduction to a new discrete choice modeling approach based on the behavioral notion of regret-minimization. This so-called Random Regret Minimization-approach (RRM) forms a counterpart of the Random Utility Maximization-approach (RUM) to discrete choice modeling, which has for decades dominated the field of choice modeling and adjacent fields such as transportation, marketing and environmental economics. Being as parsimonious as conventional RUM-models and compatible with popular software packages, the RRM-approach provides an alternative and appealing account of choice behavior. Rather than providing highly technical discussions as usually encountered in scholarly journals, this tutorial aims to allow readers to explore the RRM-approach and its potential and limitations hands-on and based on a detailed discussion of examples. "
Heidelberg: Springer, 2012
e20397223
eBooks  Universitas Indonesia Library
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Poularikas, Alexander D.
Boca Raton: CRC Pres, 2009
621.382 2 POU d
Buku Teks  Universitas Indonesia Library
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Lia Astari
"Saat ini operator telekomunikasi menghadapi berbagai tantangan yang mempengaruhi profit. Untuk menghadapi tantangan-tantangan tersebut operator memerlukan strategi yang tepat. Strategi kepeminpinan biaya dapat direalisasikan dalam efisiensi capex dan opex. Penelitian ini bertujuan untuk melakukan efisiensi penggunaan biaya investasi BTS tanpa mengesampingkan kualitas layanan. Untuk tercapainya laba bersih yang diharapkan, dibutuhkan perancangan ambang batas kapasitas sebagai pedoman ekspansi BTS. Investasi yang berlebihan dapat menyebabkan penurunan laba bersih. Sebaliknya investasi yang terlambat dapat menyebabkan rendahnya Quality of Experience (QoE). Perhitungan ambang batas menggunakan teori Probabilistic Risk Analysis Discrete Random Variables, dengan membandingkan probabilitas tingkat pengembalian investasi dan risiko antar alternatif agregasi utilisasi menggunakan mean 80%, mean 90%, peak 80%, dan peak 90%. Hasil analisis menunjukkan berdasarkan analisis probabilitas tingkat pengembalian investasi dan tingkat risiko, maka agregasi mean dengan threshold 90% lebih baik.

Nowadays, the operators have faced some challenges which impact to net profit. To overcome the challenges, operators need proper strategy. Cost leadership strategy can be realized in efficient capex and opex. This research is purposed to make BTS investment cost efficient without set the quality of service aside. To get the expected profit, operators need to design the capacity threshold as BTS expansion guidance. Over investment can cause net profit decrement. Otherwise, late investment can cause low Quality of Experience (QoE). Threshold design uses Probabilistic Risk Analysis Discrete Random Variables theory, with comparing return of investment probability and risk between alternatives using mean 80%, mean 90%, peak 80%, dan peak 90%. The result shows that base on return of investment probability and risk, mean aggregate with threshold 90% is better than others.
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Depok: Fakultas Teknik Universitas Indonesia, 2014
T42516
UI - Tesis Membership  Universitas Indonesia Library
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Imaduddin Sahabat
"Sejak diperkenalkan penggunaan media pembayaran elektronis terus berkembang, namun proprosi uang tunai masih dominan digunakan dalam pembayaran transaksi rumah tangga di Indonesia. Besarnya penggunaan uang tunai, disamping kurang efisien juga berdampak terhadap aktivitas transaksi ekonomi yang tidak tercatat shadow economy. Peningkatan efisiensi transaksi pembayaran telah menarik peneliti dan pembuat kebijakan mengkaji dan mendorong konsumen rumah tangga lebih banyak menggunakan media pembayaran elektronis dibandingkan dengan media pembayaran uang tunai less cash society. Studi ini menganalisis keputusan rumah tangga dalam memilih media pembayaran untuk bertransaksi, dengan perhatian utama pada dua hal. Pertama, mengkaji pengaruh persepsi rumah tangga terhadap atribut kemudahan identifikasi transaksi anonymity terkait besarnya penggunaan media pembayaran uang tunai. Kedua, mengkaji dan mengidentifikasi pengaruh atribut yang melekat pada media pembayaran seperti keamanan, kemudahan, biaya, reward, dan acceptance terhadap keputusan rumah tangga dalam menggunakan media pembayaran elektronis serta bagaimana proses pengambilan keputusan pilihan rumah tangga tersebut dilakukan. Studi ini menggunakan data hasil survei terhadap rumah tangga perkotaan di dua provinsi yang dianggap mewakili wilayah dengan penggunaan media elektronis tertinggi di Indonesia. Hasil pengumpulan data diolah dan dianalisa untuk melihat faktor yang berpengaruh terhadap pilihan media pembayaran dengan menggunakan model pilihan diskrit. Metode ordered logit, digunakan untuk mengetahui perubahan kategori bertingkat kelompok pengguna uang tunai. Sedangkan metode nested logit, dipilih untuk mengkaji dampak atribut terhadap pilihan penggunaan media pembayaran elektronis dan proses pengambilan keputusan rumah tangga. Hasil studi pertama menunjukkan bahwa persepsi terhadap kemudahan teridentifikasinya transaksi media pembayaran akan berpengaruh terhadap besarnya penggunaan uang tunai. Namun, pada kelompok rumah tangga dengan kelas pendapatan tertentu menengah, kemudahan identifikasi transaksi diperlukan untuk memonitor pengeluaran budget control. Selain itu, pembayaran upah dengan uang tunai dan tipe transaksi bulanan akan meningkatkan penggunaan uang tunai lebih besar. Dari faktor sosial ekonomi, penggunaan uang tunai dalam jumlah besar dipengaruhi oleh pendidikan kepala rumah tangga yang rendah, tingkat pendapatan, jumlah anggota rumah tangga yang banyak, dan kepala rumah tangga yang tidak bekerja. Sedangkan hasil studi kedua memperlihatkan bahwa keamanan, biaya, reward, dan acceptance secara signifikan memengaruhi probabilitas penggunaan media pembayaran elektronis. Selain itu, hasil estimasi marginal effect menunjukkan perubahan persepsi atribut media pembayaran yang memiliki pengaruh besar adalah tingkat keamanan, pemberian reward, dan biaya. Dapat juga dicatat bahwa rumah tangga pengguna kartu debit dan transfer kredit sangat sensitif terhadap perubahan tingkat persepsi atribut keamanan, biaya, dan acceptance; sedangkan rumah tangga pengguna kartu kredit relatif sensitif terhadap perubahan persepsi atribut reward. Estimasi juga menghasilkan nilai koefisien inclusive value sebesar 0,661 yang menunjukkan proses keputusan rumah tangga dalam menggunakan media pembayaran bersifat bertahap dan membuktikan adanya korelasi di antara media pembayaran elektronis. Kebijakan untuk mendorong penggunaan media pembayaran elektronis dapat dilakukan melalui peningkatan pengetahuan rumah tangga tentang kualitas atribut media pembayaran melalui pendidikan dan pemberian informasi. Selain itu, peningkatan kualitas atribut media pembayaran dengan memanfaatkan berbagai fitur teknologi dan efisiensi transaksi juga diperlukan. Dari sisi karakteristik sosial ekonomi rumah tangga, faktor usia, pendidikan, pendapatan, dan status kepala rumah tangga bekerja, memiliki probabilitas tinggi untuk menggunakan setiap media pembayaran elektronis lebih banyak. Hasil ini menunjukkan bahwa penggunaan media pembayarna elektronis lebih segmented pada kelompok berpendidikan dan berpendapatan tinggi serta usia produktif. Kebijakan yang dapat diambil harus tepat sasaran pada target kelompok tersebut.

Although in recent years the use of electronic payment media has been growing rapidly in the world and have impacts on economic efficiency, the use of cash for economic transactions is still dominant. Existing studies focused on the macro impact of such transaction in developed countries. However, the studies on the payment method use are relatively limited. This is mainly due to the data limitation at the individual level. Various micro studies to identify the socio economic factors on the choice of cash usage have been attempted, but the focuses to identify the effects of media attribute payments are still limited. This study attempts to analyze household's decision associated with preference of cash and electronic payments using data of 936 urban households in six municipalities in Jakarta and East Java, focusing on the effect of payment system characteristics on the preferred payment method. Discrete choice model is employed as the household's decision can be assumed to follow a sequential process.The use of cash still represents the dominant role in the payment transaction. Cash payment has unique attributes compared to other payment media as it relates to the unidentified transaction factor. This study examines the impacts of the perception of the media attributes of specific payment transactions, specifically the ease of the payment media identification and the effects of characteristics of domestic cash transactions on the amount of use of cash in Indonesia. The study shows that an ordered logit model has been able to explain the factors that influence the magnitude of the use of cash. The results estimation shows that perceptions of the ease of transaction identification on medium of payment will affect the magnitude of the use of cash. In households with middle income class, the ease of transaction identification is required to monitor the expenditure budget control . In addition, the payment of wages in cash and monthly transaction type will magnify the cash usage. Based on the findings in this study, the electronic payment media needs to be utilized on payroll systems and routine household transactions. The amount of cash usage is also influenced by the behavior of cash withdrawal and the amount of money held by households. This findings show that the holding the money is intended for transaction purposes.Thus, to reduce the use of cash, a policy that can be implemented is to build the awareness to reduce the level of households 39 perceptions of the ease of identification of the payment media. In addition, the provision of information related to transaction monitoring can be more precisely implemented. Efforts from the authority to monitor transactions can be done discretely, where the data recording of transactions is carried out as part of the process of filling the transaction order. This procedure is expected to make households feel more comfortable doing transactions. To accommodate the needs of monitoring of transactions by households budget control ,a recording facility providing payment transactions could be one of the viable options for households.The use of payment via electronic payment methods, such as credit transfers, debit cards, credit cards, e money e banking, has several advantages compared to cash payment method. It is due to the reasons that electronic payment methods have time efficiency, lower cost of cash handling and cash management as well as lower security risk. The estimation results indicate that the use of the payment is determined by a variety of variables. Based on the estimation of the nested logit models, it can be shown that security, cost, reward and acceptance significantly affect the probability use of electronic payment methods. In addition, the marginal effect estimation result indicates that the payment method attributes have major influence on the level of security, reward and transaction costs. It should be noted that debit card and credit transfer users are the most sentitive to a change in unit of security, cost and acceptance, and credit card users are more likely affected by the changes in reward. In terms of socio economic characteristics of households, age, education, income, and employment status of household heads have increased the probability to use more electronic payment methods with various result. The ease of access to banking significantly affects the use of all electronic payment methods. These variations may imply that policymakers are required to apply different strategies in different attribute of payment methods and social economics characteristics. The estimation result also indicate that the use model of payment methods is made via sequential decision a nested model , as the inclusive value showed the coefficient of 0.661, which remained consistent with utility maximization framework. This implies that one payment method is more likely to compete with another payment method of the same electronics payments than the payment methods of cash payment alternative. In conclusion, this study confirms attributes that are influential to further induce household's use of electronic payment methods."
Depok: Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2016
D2032
UI - Disertasi Membership  Universitas Indonesia Library
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Magfirawaty
"ABSTRAK
Pada penelitian ini dilakukan perancangan random number generator RNG berbasis discrete time DT chaos dengan menggunakan modifikasi chaos satu dimensi sebagai fungsi deterministik pada proses destilasi. Sistem chaos satu dimensi 1D merupakan sistem dinamik sederhana yang banyak diterapkan dalam pembangkitan bilangan acak. Pada penelitian awal, kami telah mengkombinasikan ring oscillator RO sebagai sumber entropi dari RNG dengan logistic map sebagai fungsi deterministik. Telah dilakukan beberapa penelitian terkait dengan menggunakan sistem chaos 1D, yang mampu menghasilkan rangkaian bit acak secara statistik. Pada penelitian ini kami melakukan modifikasi logistic map yang akan diaplikasikan sebagai RNG berbasis DT chaos. Logistic map merupakan sistem chaos yang sering diterapkan pada sistem kripto. Selain karena mudah diimplementasikan pada perangkat keras, logistic map juga memiliki tingkat keamanan yang lebih baik dibandingkan sistem chaos fungsi nonlinier lainnya. Modifikasi menghasilkan dua persamaan deterministik baru yaitu MLP I dan MLP II, yang mampu mengolah data real, -1, 1 untuk menghasilkan luaran berupa bilangan potisif dan negatif, -1, 1 . Dengan menggunakan pembuktian secara empiris dan teoritis, didapatkan fungsi ekstraktor dengan nilai tertentu untuk mengubah bilangan real yang dihasilkan oleh fungsi deterministik menjadi rangkaian bit dengan nilai entropi tinggi. Hasil uji keacakan dengan menggunakan NIST 800-22 menunjukkan bahwa rangkaian bit yang diperoleh dinyatakan acak dengan nilai proporsi yang dihasilkan untuk seluruh uji berada pada interval 0.9804-0.9994 dengan P-value>. Jika dibandingkan dengan zigzag map sebagai fungsi deterministik pada RNG berbasis DT chaos, MLP II mampu menghasilkan rangkaian bit yang lebih acak dibandingkan zigzag map tanpa post-processing. Pengujian keacakan menggunakan uji DieHard menunjukkan bahwa 80 Mbit output MLP II dinyatakan acak dengan P-value = 0, 1 . Implementasi metode RNG berbasis DT chaos dengan fungsi MLP II menggunakan ZedBoard Zynq 7000 memperlihatkan jumlah source yang digunakan lebih efisien dibandingkan RNG berbasis DT chaos dengan fungsi zigzag map yaitu look up tables LUT sebanyak 2 , flip flop FF sebanyak 1 dan digital signal processing DSP sejumlah 4.5 .

ABSTRACT
This research designs a discrete time DT chaos based random number generator RNG , which uses one-dimension chaos modification as deterministic function in the destillation process. One-dimensional chaos 1D is a simple dynamic system, which is widely applied to generate random numbers. In the preliminary research, we have combined ring oscillator RO as the RNG entropy source with logistic map as a deterministic function. We have done some related research using a 1D chaos system, which is capable to generate random bits statistically. Our work modifies logistic map that will be applied as DT chaos-based RNG. The logistic map is a chaotic system that is usually applied in the cryptosystem. In addition to easy hardware implementation, the logistic map also has a better level of security than other nonlinear chaos function. The modification performed yields two new deterministic equations, namely MLP I and MLP II, which are capable to process data of real numbers, -1, 1 , and generate positive and negative numbers, -1, 1 . Through empirical and theoretical verification the extractor function is obtained with a certain value to convert the real number that is generated by a deterministic function into a sequence of bits which has high entropy value. Through NIST 800-22 randomness test it is revealed that the obtained bit sequence is random with the proportion values at intervals 0.9804-0.9994 and P-value > ? . Comparing with the zigzag map as a deterministic function in the DT chaos-based RNG, MLP II map generates more random bit sequence than the zigzag map. Furthermore as much as 80Mbit MLP II output passed the Diehard test with P-value = 0, 1 . Implementation of the DT chaos-based RNG method with the MLP II function using ZedBoard Zynq 7000 shows the number of sources used more efficient than the DT chaos-based RNG with the zigzag map function of 2 look up tables LUT , flip flop FF as much as 1 and digital signal processing DSP of 4.5 ."
Depok: Fakultas Teknik Universitas Indonesia, 2018
D2501
UI - Disertasi Membership  Universitas Indonesia Library
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"
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EBSCOhost,
302EBST001
Multimedia  Universitas Indonesia Library
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Briggs, William L.
"This second edition of the popular A Multigrid Tutorial preserves the introductory spirit of the first edition while roughly doubling the amount of material covered. The topics of the first edition have been enhanced with additional discussion, new numerical experiments, and improved figures. New topics in the second edition include nonlinear equations, Neumann boundary conditions, variable mesh and variable coefficient problems, anisotropic problems, algebraic multigrid (AMG), adaptive methods, and finite elements."
Philadelphia : Society for Industrial and Applied Mathematics, 2000
e20442967
eBooks  Universitas Indonesia Library
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Ross, Kenneeth A.
London: Prentice-Hall, 1985
511.5 ROS d
Buku Teks SO  Universitas Indonesia Library
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Ross, Kenneeth A.
London: Prentice-Hall, 1985
511.5 ROS d
Buku Teks SO  Universitas Indonesia Library
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Kolchin, Valentin F.
New York : John Wiley, 1978
519.2 KOL r
Buku Teks SO  Universitas Indonesia Library
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