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Abstrak :
DESAIN PENGENDALIAN SISTEM PENGAMBILAN PANAS REAKTOR DAYA EKSPERIMENTAL. Reaktor daya eksperimental (RDE), yang merupakan salah satu program unggulan BATAN, didisain untuk menggunakan bahan bakar pebble dan pendingin gas helium serta material grafit sebagai material struktur teras, yang meliputi reflektor atas, bawah, dan samping. RDE, yang merupakan tipe reaktor berpendingin gas temperatur tinggi (high temperature gas-cooled reactor/HTGR) ini, memanfaatkan sistem pengambilan panas secara pasif melalui sirkulasi alami. Desain pengendalian sistem pengambilan panas RDE berperan penting dalam pengoperasian instalasi secara selamat. Desain pengendalian melibatkan sistem kendali cascade dua tingkat, dimana kontroler tingkat atas menghitung setpoint untuk kontroler tingkat bawah. Desain ini diterapkan pada sistem kendali batang kendali, sirkulator helium, dan katup air umpan. Pada pengendalian batang kendali, aliran air umpan (feed water) digunakan sebagai masukan umpanmaju (feed-forward input), temperatur uap sebagai variabel terukur tingkat pertama, dan fluks neutron sebagai variabel terukur tingkat kedua. Luaran dari sistem kendali ini adalah aktuasi naik/turun batang kendali RDE. Sistem kendali sirkulator helium menggunakan aliran air umpan sebagai masukan umpan-maju (feed-forward input) dan temperatur uap sebagai masukan umpanbalik (feedback input). Sementara itu, sistem kendali katup air-umpan menggunakan aliran beban modul (module load) sebagai masukan umpan-maju (feed-forward input) dan laju alir air umpan (feed water flowrate) sebagai masukan umpan-balik (feedback input). Contoh simulasi pengendalian daya pada RDE ini juga ditampilkan.

DESIGN OF CONTROL FOR THE HEAT REMOVAL SYSTEM OF EXPERIMENTAL POWER REACTOR. The experimental power reactor (EPR), which is one of the BATAN?s priority programs, is designed to utilize fuel pebble and helium coolant as well as graphite as the material of core structure, which includes top, bottom, and side reflector. EPR, which is a type of high temperature gas-cooled reactor, employs passive heat removal system through natural circulation. Design of control for the heat removal system plays important role in safe operation of the installation. This control design uses two-cascade control system, in which the slave controller computes the set point for the master controller. This desisgn is applied to the control system of control rod, helium circulator, and feed water valve. For the control system of the control rod, feed water flow is used as feedforward input, steam temperature as the first level?s measured variable, and neutron flux as the second level?s measured variable. The output of this control system is the actuation of the RDE?s control rod movement. The control system of helium circulator uses feed water as a feed-forward input and steam temperature as a feedback input. Meanwhile, the control system of feed-water valve employs module load as a feed-forward input and feed-water flow rate as a feedback input. An example of simulation of power control on RDE has also been presented.

Abstrak :
Kecamatan Denpasar Selatan merupakan salah satu daerah dengan kasus demam berdarah dengue paling tinggi di Provinsi Bali. Jumlah tempat perkembangbiakan nyamuk dan kepadatan jentik dapat menjadi salah satu faktor risiko yang mempengaruhi penyebaran nyamuk. Maya index merupakan indikator untuk mengukur jumlah tempat penampungan air yang dapat sebagai tempat berkembang biak nyamuk. Mengetahui hubungan antara tingkat maya index serta kepadatan jentik dan pupa Ae. aegypti terhadap infeksi dengue di Kecamatan Denpasar Selatan. Penelitian ini adalah observasional analitik dengan rancangan penelitian kasus-kontrol. Pengambilan data dilakukan dengan wawancara dan observasi lapangan pada 150 responden. Survei entomologi dengan indikator maya index, house index (HI), container index (CI), Breteau index (BI), dan pupa index (PI) untuk melihat kepadatan larva dan pupa di daerah survei. Risiko penularan DBD dikategorikan ringan, sedang, dan berat bedasarkan density figure. Tempat penampungan air yang diperiksa pada sebanyak 1.215 kontainer, yaitu pada kasus 675 buah dan pada kontrol 540 buah. Tempat penampungan air (TPA) paling banyak jentik yakni bak mandi (29,27%), dispenser (18,29%), wadah tirta (10,98%), sumur (10,98%). Status Maya index rendah pada kasus (24%) lebih kecil dibandingkan dengan kontrol (37,33%). Nilai HI = 23,33; CI = 10,69; BI = 55; PI = 15,33. Berdasarkan indikator HI dan CI Kecamatan Denpasar Selatan berarti memiliki risiko penularan sedang terhadap penyebaran penyakit DBD. Berdasarkan BI, memiliki risiko penularan tinggi terhadap penyebaran penyakit demam berdarah dengue. Berdasarkan maya index menunjukkan rumah kasus berisiko tinggi sebagai tempat perkembangbiakan nyamuk dibandingkan dengan rumah kontrol. House index, Breteau index, container index, pupa index dan maya index memiliki hubungan dengan kejadian DBD. Jenis tempat penampungan air yang paling berisiko adalah bak mandi.

Maya Index and Larva Density Aedes Aegypti Toward Dengue Infection. South Denpasar District was of there as with the highest dengue cases in Bali province. The number of mosquito breeding places and larvae density become risk factor that influenced the spreading of mosquitoes. Maya index was an indicator to measure the amount of water reservoirs can be breeding places for mosquitoes. Knowing the relationship between maya index and density of larvae and pupae of Ae.aegypti toward dengue infection in South Denpasar District. The study was observational analytic with case-control design. Data was collected through interviews and field observations to 150 respondents. The survey entomologist with indicators maya index, house index (HI), container index (CI), breteau index (BI) and pupa index (PI) to see the density of larvae and pupae in survey area. Dengue transmission risk was categorized mild, moderate and severe based on density figure. Water storage containers inspected in 1215 containers that as many as 675 containers in the case and 540 containers in control. Water reservoirs (TPA) that the most larvae was tub (29.27%), dispenser (18.29%), container tirta (10.98%), wells (10.98%). Maya index status was lower in the case (24%) smaller than controls (37.33%). Value of HI = 23.33; CI=10.69; BI=55; PI=15.33. Based on HI and CI indicator South Denpasar District means have moderate the risk of transmission spread of dengue disease. Based on the BI, have a high risk of transmission to the spread of dengue disease. Based on the maya index showed house cases have highest risk as breeding place compare than control house. House index, Breteau index, container index, pupa index and maya index have correlation with dengue infection. Kind of breeding place have the high risk is bath tub.

Abstrak :
This book describes the modelling and optimisation of vibration reduction systems in an integrated fashion using nonlinear equations of motion. It proposes an effective optimisation method for determining the basic characteristics of the non-linear visco-elastic elements used in passive vibration reduction systems. In the case of semi-active and active vibration isolators, a design process of the advanced control systems is proposed that makes possible to optimise the controller settings relatively to the selected vibro-isolation criteria. The approach developed here is subsequently tested by means of experimental investigations conducted on various sample vibration reduction systems: passive, semi-active and active.