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Hasil Pencarian

Ditemukan 3 dokumen yang sesuai dengan query
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Edy Hadian
Abstrak :
Secara umum, kondisi permukaan jalan dapat mempengaruhi setidaknya tiga hal: biaya/waktu perjalanan, aksesibilitas, dan keseimbangan jaringan. Dengan mempertimbangkan hubungan antara ketiga faktor ini, penelitian ini menyusun suatu hubungan waktu, IRI dan volume (VCR) dalam bentuk Link Performance Function (LPF). Biaya merupakan kendala utama dalam program pemeliharaan jalan, hal ini menyebabkan perlu adanya suatu kriteria dalam pemilihan jalan yang akan dipelihara. Studi ini mengusulkan kriteria pemilihan segmen jalan melalui optimasi pemeliharaan jalan dengan metode aksesibilitas. Optiamsi pemeliharaan jalan dalam penelitian ini tidak hanya didasarkan pada kondisi permukaan (IRI) tetapi juga mempertimbangkan aspek aksesibilitas area menggunakan pendekatan analisis jalur (path analysis) secara dinamis. Segmen jalan yang dipelihara dipilih berdasarkan nilai bobot pengaruh segmen tersebut terhadap nilai aksesibilitas wilayah per unit biaya perbaikan. Segmen dengan pengaruh aksesibilitas tertinggi akan memiliki indeks penanganan prioritas yang lebih tinggi. Dalam penerapannya, model optimasi ini disimulasikan dengan mengambil studi kasus jaringan jalan nasional dan jalan provinsi di Jawa Tengah. Hasil analisis menggunakan metode aksesibilitas ini memberikan pemilihan segmen yang unik sehingga dapat digunakan sebagai pertimbangan bagi pihak pengambil keputusan dalam penetapan segmen jalan yang akan dipelihara. ......Generally, road surface condition can affect at least three things: cost/travel time, accessibility, and network balance. Considering the relationship between these three factors, this study compiles time, IRI and volume (VCR) relationship into a Link Performance Function (LPF). Cost is a major constraint in the road maintenance program, this causes the need for a criterion in the road segment selection. This study proposes criteria for selecting road segments through the optimization of road maintenance with accessibility methods. Road maintenance options in this study are not only based on surface conditions (IRI) but also consider accessibility aspects using a dynamic path analysis approach. The maintain road segment chosen based on the value of the weight of the segment's influence on the value of accessibility per unit maintenance cost. The segment with the highest accessibility effect will have a higher maintenance priority index. In its application, this optimization model simulation by taking a case of the national road network and provincial roads in Central Java. The results of the analysis using this accessibility method provide a unique segment selection so that decision-makers can use it as a consideration in determining road maintenance.
Depok: Fakultas Teknik Universitas Indonesia, 2020
T-pdf
UI - Tesis Membership  Universitas Indonesia Library
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Yorashaki Martha Leza
Abstrak :
[ABSTRAK
Penggunaan energi alternatif untuk saat ini merupakan hal yang sangat penting, dikarenakan makin menipisnya ketersediaan energi di alam. Energi alternatif ini berasal dari potensial-potensial alam yang lain, yang dapat diperbaharui, dapat dihasilkan dalam waktu yang singkat, atau juga berasal dari akibat adanya penggunaan potensi alam yang lain sehingga menimbulkan potensi energi yang tidak kita sadari kehadirannya disekitar kita adalah gelombang frekuensi radio atau yang biasa dikenal dengan gelombang RF.

Pada Tesis ini dibuat rectifier antenna dengan menggunakan antena mikrostrip patch lingkaran yang dapat digunakan untuk memanen energi RF pada frekuensi resonan 2,445 GHz dan mengkonversikannya menjadi energi DC, yang dapat digunakan untuk menghasilkan energi alternatif dari sumber daya yang belum dimanfaatkan.

Dari hasil simulasi, parameter antena hasil perancangan diperoleh VSWR dan return loss paling bagus sebesar 1,1664 dan -22,292 dB pada frekuensi 2,445 GHz, bandwidth sebesar 85 MHz, gain 6,882 dB, dan pola radiasi directional. Kemudian, dengan diberikan nilai Pin = 20 dBm, RL = 2 KΩ, dan jarak 100 cm rectenna mampu menghasilkan nilai Vout = 3,3 Volt dengan nilai efisiensi maksimal sebesar 82%.

Dari hasil pengukuran, parameter antena hasil perancangan diperoleh VSWR dan return loss paling bagus sebesar 1,12 dan -25,08 dB pada frekuensi resonan 2,445 GHz, bandwidth sebesar 72 MHz, dan gain 7,4 dB, dan pola radiasi directional. Kemudian, dengan diberikan nilai Pin = 20 dBm, RL = 2 KΩ, dan jarak 100 cm rectenna mampu menghasilkan nilai Vout = 0,967 Volt dengan nilai efisiensi maksimal sebesar 24%
ABSTRACT
Alternative energy becomes a very important issue due to the decrease energy availability in the nature. For example, one potential energy that we didn?t realize its presence around us is the Radio Frequency waves or commontly known as RF waves. There is an effort to harvest the RF energy using rectenna technology.

In this tesis a rectifier antenna using circular microstrip patch antenna that can be used to harvest RF energy at frequency 2.445 GHz is designed to convert the RF into DC energy. This design can be used to produce alternative energy from resources that have not been utilized.

From the simulation results, the results of the antenna parameters VSWR and return loss is 1.1664 and -22.292 dB respectively at frequency 2.445 GHz, has a bandwidth of 85 MHz, gain .,882 dB, and radiation pattern is directional. In addition, with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a value of Vout = 3.3 Volts with maximum efficiency is 82%.

From the measurement results, the results of the antenna parameters VSWR and return loss is 1.12 and -25.08 dB respectively at frequency 2.445 GHz, has a bandwidth of 72 MHz, gain 7.4 dB, and radiation pattern is directional. In addition, with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a value of Vout = 0.967 Volts with maximum efficiency is 24%.;Alternative energy becomes a very important issue due to the decrease energy availability in the nature. For example, one potential energy that we didn?t realize its presence around us is the Radio Frequency waves or commontly known as RF waves. There is an effort to harvest the RF energy using rectenna technology. In this tesis a rectifier antenna using circular microstrip patch antenna that can be used to harvest RF energy at frequency 2.445 GHz is designed to convert the RF into DC energy. This design can be used to produce alternative energy from resources that have not been utilized. From the simulation results, the results of the antenna parameters VSWR and return loss is 1.1664 and -22.292 dB respectively at frequency 2.445 GHz, has a bandwidth of 85 MHz, gain .,882 dB, and radiation pattern is directional. In addition, with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a value of Vout = 3.3 Volts with maximum efficiency is 82%. From the measurement results, the results of the antenna parameters VSWR and return loss is 1.12 and -25.08 dB respectively at frequency 2.445 GHz, has a bandwidth of 72 MHz, gain 7.4 dB, and radiation pattern is directional. In addition, with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a value of Vout = 0.967 Volts with maximum efficiency is 24%.;Alternative energy becomes a very important issue due to the decrease energy availability in the nature. For example, one potential energy that we didn?t realize its presence around us is the Radio Frequency waves or commontly known as RF waves. There is an effort to harvest the RF energy using rectenna technology. In this tesis a rectifier antenna using circular microstrip patch antenna that can be used to harvest RF energy at frequency 2.445 GHz is designed to convert the RF into DC energy. This design can be used to produce alternative energy from resources that have not been utilized. From the simulation results, the results of the antenna parameters VSWR and return loss is 1.1664 and -22.292 dB respectively at frequency 2.445 GHz, has a bandwidth of 85 MHz, gain .,882 dB, and radiation pattern is directional. In addition, with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a value of Vout = 3.3 Volts with maximum efficiency is 82%. From the measurement results, the results of the antenna parameters VSWR and return loss is 1.12 and -25.08 dB respectively at frequency 2.445 GHz, has a bandwidth of 72 MHz, gain 7.4 dB, and radiation pattern is directional. In addition, with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a value of Vout = 0.967 Volts with maximum efficiency is 24%., Alternative energy becomes a very important issue due to the decrease energy availability in the nature. For example, one potential energy that we didn’t realize its presence around us is the Radio Frequency waves or commontly known as RF waves. There is an effort to harvest the RF energy using rectenna technology. In this tesis a rectifier antenna using circular microstrip patch antenna that can be used to harvest RF energy at frequency 2.445 GHz is designed to convert the RF into DC energy. This design can be used to produce alternative energy from resources that have not been utilized. From the simulation results, the results of the antenna parameters VSWR and return loss is 1.1664 and -22.292 dB respectively at frequency 2.445 GHz, has a bandwidth of 85 MHz, gain .,882 dB, and radiation pattern is directional. In addition, with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a value of Vout = 3.3 Volts with maximum efficiency is 82%. From the measurement results, the results of the antenna parameters VSWR and return loss is 1.12 and -25.08 dB respectively at frequency 2.445 GHz, has a bandwidth of 72 MHz, gain 7.4 dB, and radiation pattern is directional. In addition, with Pin = 20 dBm, RL = 2 KΩ, and distance 100 cm the rectenna is able to give a value of Vout = 0.967 Volts with maximum efficiency is 24%.]
2015
T43380
UI - Tesis Membership  Universitas Indonesia Library
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Ina Gustiana
Abstrak :
Dengan tersedianya data genom berupa sekuen DNA pada domain publik, banyak peneliti dari berbagai lintas bidang yang memfokuskan penelitian mereka dalam studi genom untuk analisa ekstrasi informasi dan analisa data. Penelitian pada sekuen DNA dilakukan dengan menggunakan metode pengolahan signal digital disebut dengan Genomic Signal Processing (GSP). GSP dapat digunakan untuk mendiagnosis penyakit genetik yang muncul karena mutasi pada sekuen DNA, seperti kanker. Saat ini, kanker menduduki peringkat kedua sebagai penyebab kematian di dunia. Pada tingkat yang paling mendasar, kanker adalah penyakit DNA, dimana perubahan sekuen DNA dan molekul yang berinteraksi dengan DNA pada akhirnya menyebabkan profilerasi sel yng tidak terkendali. Pada skripsi ini, akan dilakukan simulasi untuk membandingkan tranformasi fourier dengan transformasi wavelet dalam mendeteksi kanker. Perancangan diawali dengan mengkonversi sekuen DNA menjadi sekuen numerik menggunakan binary sequence method. Selanjutnya,transformasi fourier / wavelet digunakan untuk menganalisa karakteristik spektral dan IIR Low Pass Filter Butterworth digunakan untuk meningkatkan akurasi dengan menekan noise. Berdasarkan simulasi, diperoleh bahwa transformasi wavelet dapat digunakan untuk mendeteksi kanker melalui analisa sekuen DNA dimana wavelet ortogonal memberikan hasil lebih baik daripada biortogonal. Dibandingkan transformasi fourier, transformasi wavelet memiliki performa yang lebih baik dalam mendeteksi sel kanker. ...... With the enormous amount of genomic data of DNA sequence available in the public domain, many researcher from various cross fields have concentrated their research in genomic study for information extraction and data analysis technique that is used to analyze DNA sequences using Digital Signal Processing (DSP) is Genomic Signal Processing (GSP). GSP can be used to diagnose genetic diseases that appear due to mutations in DNA sequences, such as cancer. Cancer is the second leading disease that cause of death in the world. Cancer is the disease of DNA because a permanent change in the DNA can develop cancer cells. This thesis will design a simulation to compare between fourier transformation and wavelet transformation for cancer detection. The design begins by converting the DNA sequence into numerical sequences using binary sequence method. Furthermore, the fourier/wavelet transform is used to analyze the spectral characteristics of DNA sequence and IIR Butterworth Low Pass Filter is used to improve the accuracy in predicting and identifying cancer cells. The result of simulation shows that wavelet transform can be used to detect a cancer through DNA sequence analysis. Wavelet transform shows the better performance than fourier transformation. In wavelet transform, orthogonal wavelet give better result that biorthogonal wavelet.
Depok: Fakultas Teknik Universitas Indonesia, 2015
S60212
UI - Skripsi Membership  Universitas Indonesia Library