http://hdl.handle.net/123456789/1392 2013-06-17T11:08:53Z 2013-06-17T11:08:53Z Hustinawaty, Hustinawaty Rahayu, Dewi Agushinta Kusuma, Tubagus Maulana Lestari, Intan Nur Damayanthi, Cicu Ratih http://hdl.handle.net/123456789/7009 2013-06-15T12:09:27Z 2011-01-01T00:00:00Z

Title: Implementasi MPRL dan Hough Transform Untuk Segmentasi dan Ekstraksi Fitur Pada Citra Gaya Berjalan Authors: Hustinawaty, Hustinawaty; Rahayu, Dewi Agushinta; Kusuma, Tubagus Maulana; Lestari, Intan Nur; Damayanthi, Cicu Ratih Abstract: Human gait is unique. It has different characteristics and have a high ability to distinguish a person. "Gait” analysis, mapping human body points is todays advanced technology. Stages of "gait" processing start from segmentation, extraction until recognition. This paper discusses the segmentation and extraction of gait features. Thinning methods with Most Prominent Ridge Line (MPRL) algorithms to form the skeleton bones of human beings is used. The resulting skeleton image is used for features gait extraction through annular analysis. Method for feature extraction used is Hough transformation. The resulting features are grouped according to distance and angle. This grouping determines the location of features on an image skeleton. The next process is to calculate the distance between feature and angle formed. There are ten features obtained. Four features of a group spacing distance of the front foot until the heel of the hind legs, hands up to the front axle center of the chest, arms rear axle until the middle of the chest and arms front to the back of the hand. Six other features are the result of measurement angle of the front knee, ankle front, rear ankle, knee hind legs, forearms and elbows behind the elbow sleeves.

2011-01-01T00:00:00Z Ridwan, Ridwan Yanuar, Yanuar Budiarso, Budiarso AK, Raldi http://hdl.handle.net/123456789/7002 2013-06-14T03:15:36Z 2007-12-01T00:00:00Z

Title: Determination of Flow Properties of Mud Slurry Authors: Ridwan, Ridwan; Yanuar, Yanuar; Budiarso, Budiarso; AK, Raldi Abstract: Although many types of viscometer are available, most of them are quite unsuitable for collecting scientific or engineering data. Due to various features of their construction make it impossible to determine both shear stress and shear rate at the same known point in the equipment. The flow curve therefore can not be constructed from data obtained with such devices. Most of these unsatisfactory instruments give complex reading functions of several type of fluid properties. The aim of this study will examine the viscous properties and to make curve of mud slurry by horizontal pipe as viscometer. These viscometer determine relationships between shear stress and shear rate. The diameter of pipe was 12,7 mm. The length of pipe was 1000 mm. Calculated the shear stress and the shear rate by measuring the pressure loss gradient and the gradient of velocity, respectively. Weight fraction of mud slurry were 20 %, 30 % and 45 %. The results indicated the apparent viscosity of mud slurry is not proportional to the shear stress and shear rate but the relationship could be approximated by power law’s mode with the index n = 0.93 – 1.0

2007-12-01T00:00:00Z Ridwan, Ridwan http://hdl.handle.net/123456789/7001 2013-06-14T03:05:53Z 2005-11-21T00:00:00Z

Title: PERBANDINGAN UNJUK KERJA FREON R-12 DAN R-134a TERHADAP VARIASI BEBAN PENDINGIN PADA SISTEM REFRIGERATOR 75 W Authors: Ridwan, Ridwan Abstract: Refrigerant very important variable in application refrigerator system. The purpose this research investigation the comparison Coefficient Of Performance (COP) Refrigerant 12 (R.12) versus Refrigerant 134a (R.134a) in refrigerator 75 W. Cooling load on the refrigerator using water each volume 100 ml, 200 ml, and 300 ml at temperature 28 oC. Decreasing temperature of water from 28 oC until 0 oC investigate every five minutes. Temperature out – in to Condenser, evaporator and pressure out of capillary tube each of measure using digital thermometers and pressure gauge. From experiment and data analysis show that COP R.134a higher than R. 12 each variation cooling load.

2005-11-21T00:00:00Z Rahmadiansyah, Apri http://hdl.handle.net/123456789/6973 2013-06-10T10:16:46Z 2013-06-10T00:00:00Z

Title: Penanganan Gangguan Jaringan Akses Tembaga Sto Bojong Gede (studi Kerja DI Telkom Bojong Gede) Authors: Rahmadiansyah, Apri

2013-06-10T00:00:00Z