Weibull Parameter Estimation using Linear Regression

Weibull statistic is the most favorite model of mine. Not only its flexibility to mimic many natural phenomenon, it also has plenty of methods (approaches) in predicting its parameters. Yes, I do like the choices of Weibull in deciding which parameter estimation method suits with my application. In this writing, I want to show the example of Linear Regression method in predicting 2-parameters Weibull distribution. Other methods such as Maximum Likelihood or Percentile will be discussed later on.

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Map Scale

Some definitions of map scale
“the ratio of the distance on a map to the corresponding distance on the surface the map represents”
“Map scale is the relationship between a unit of length on a map and the corresponding length on the ground. It’s also expression of how much the area represented has been reduced on the map”
“Map scale specifies the amount of reduction between the real world and its graphic representation (usually a paper map).
“The scale of a map is the ratio of a single unit of distance on the map to the equivalent distance on the ground”
“Map scale represents the ratio of a distance on the map to the actual distance on the ground”

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Relative Path in ArcGIS MXD

Storing relative path in ArcGIS document project (MXD) is useful to transfer the project (and data) to another computer or CDs/DVDs. By doing so the MXD can be still opened without changing the directories. Yes, we can use ArcGIS (Publisher) for doing so. However, I do not like use Publisher as it changes the dataset and the structure of the project. The alternative is changing the ‘full path’ into ‘relative path’

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Medley Indonesian Folk Songs

This is a medley that we sang in Indonesian Night 2007 at University of New England (last year). We plan to have Indonesian Night 2008 on 23rd August 2008. This medley will also be presented to audience for the second time. The song inside it are Bungong Jeumpa, Sinanggar Tullo, Malam Baiko, Ampar-Ampar Pisang, Manuk Dadali, Keroncong Kemayoran, Gundul Pacul, Si Patokaan, Potong Bebek, Anak Kambing Saya, Ayo Mama, dan Yamko Rambe Yamko.

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How to Upload Wordpress to Hosted Server

Some people prefer to install and edit Wordpress site locally. After all of setting and or articles are done, that local site then be uploaded to hosted server. This step is tricky, especially if it is the first time uploading a site. The following steps may be referred in uploading the wordpress site to hosted server.

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Quick Access to ArcGIS 9.x Spatial Reference Properties

Accessing ‘Spatial Reference Properties’ in AcrGIS is commonly used in define projection of some features or in transfer projection. In standard interface, we need to click 6 times to access WGS_19884_UTM_Zona28S while defining a feature’s projection definition as follow

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Kjofol, My Favourite MP3 Player in Window

Kjfol adalah MP3 Player (Window) favorite saya sejak saya pertama memiliki PC pertama berprosesor AMD-K62 tahun 1998 yang lalu. Saat itu saya mendengar lantunan musik menggunakan Kjofol di Pameran Komputer di Graha Sabha Pramana UGM. Satu hal yang sangat menarik saya adalah suara bass yang mantap. Apalagi saat itu digunakan Altec Lansing yang sedang tenar-tenarnya.

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Belajar Bahasa Inggris

Bahasa Inggris (English) sudah menjadi bahasa dunia. Kita yang berada di era globalisasi ini lebih baik mengerti bahasa ini daripada tidak. Banyak sekali kesempatan-kesempatan yang tidak kita bisa dapatkan apabila kita tidak bisa berkomunikasi menggunakan English. Di sini saya tidak menggarisbawahi bahwa kita ‘harus’ bisa English. Tidak ada keharusan kok, ini cuma masalah pilihan; apakah ingin bisa atau tidak. Jika kita tidak suka dengan western pun tidak ada salahnya untuk belajar bahasa mereka.

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