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Ditemukan 11124 dokumen yang sesuai dengan query
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Sanjay S. Chopade
"FinFET (Fin Field-Effect
Transistor) technology has recently seen a major increase in adoption
for use in integrated circuits because of its high immunity to short channel
effects and its further ability to scale
down. Previously, a major research contribution was made to reduce the leakage current in the
conventional bulk devices. So many different alternatives like bulk isolation and oxide isolation are all having some pros and
cons. Here in this paper, we present a novel pile gate FinFET structure to
reduce the leakage current, as compared with Bulk FinFET without using any pstop implant or
isolation oxide as in the
Silicon-on-Insulator (SOI). The major advantage of this type of
structure is that there is no need of high substrate doping, a 100% reduction in the
random dopant fluctuation (RDF) and an increase in the ION/IOFF
value. It can be very useful to improve the drain-induced barrier lowering (DIBL) at smaller
technological nodes. All the work is supported by 3D TCAD simulations, using Cogenda TCAD."
2017
J-Pdf
Artikel Jurnal  Universitas Indonesia Library
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Sanjay S. Chopade
"FinFET (Fin Field-Effect Transistor) technology has recently seen a major increase in adoption for use in integrated circuits because of its high immunity to short channel effects and its further ability to scale down. Previously, a major research contribution was made to reduce the leakage current in the conventional bulk devices. So many different alternatives like bulk isolation and oxide isolation are all having some pros and cons. Here in this paper, we present a novel pile gate FinFET structure to reduce the leakage current, as compared with Bulk FinFET without using any pstop implant or isolation oxide as in the Silicon-on-Insulator (SOI). The major advantage of this type of structure is that there is no need of high substrate doping, a 100% reduction in the random dopant fluctuation (RDF) and an increase in the ION/IOFF value. It can be very useful to improve the drain-induced barrier lowering (DIBL) at smaller technological nodes. All the work is supported by 3D TCAD simulations, using Cogenda TCAD."
Depok: Faculty of Engineering, Universitas Indonesia, 2017
UI-IJTECH 8:1 (2017)
Artikel Jurnal  Universitas Indonesia Library
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S. Divakara Shetty
"Inhibition is one of the
mechanisms used for mitigating the metallic corrosion, particularly in an acid environment. The present work aims to
investigate the
inhibiting effect of N-benzyl-N/-phenyl thiourea (BPTU) on the
corrosion of low carbon steel in a 0.1 M hydrochloric acid (HCl) solution using a Tafel
extrapolation and linear polarization techniques. The study reveals that BPTU
acts as an excellent anodic inhibitor for low carbon steel in a HCl
solution. The protective efficiency of the compound was found to be more than
97% even at higher temperatures. The study demonstrated that BPTU gets adsorbed
on the steel surface, following Temkin?s adsorption isotherm and the inhibition
is controlled by a chemisorption
mechanism. The investigation shows that the results obtained from the Tafel
extrapolation and linear polarization techniques for the corrosion of mild
steel in HCl medium were in good agreement. The influence of temperatures and
concentrations of BPTU on the corrosion of low carbon steel are also
examined in the present work."
2016
J-Pdf
Artikel Jurnal  Universitas Indonesia Library
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P. Rukmani
"In recent times, the
demand for the real time audio and video applications in wireless networks is
very high due to widespread use of latest wireless communication technologies.
Many of these applications require different Quality of Service (QoS) in terms
of delay and throughput in the resource constrained wireless networks. In order
to handle the resources effectively and to increase the QoS, proper packet
scheduling algorithms need to be developed. Low-latency Queuing (LLQ) is a packet scheduling algorithm which
combines Strict Priority Queuing
(SPQ) to Class-Based Weighted Fair Queuing (CB-WFQ). LLQ places delay sensitive applications such
as voice and video in the SPQ and treat them preferentially over other traffic
by allowing the application to be processed and sent first from the SPQ. In this paper, an Enhanced LLQ (ELLQ) is proposed.
An additional SPQ is introduced for scheduling the video applications
separately along with the dedicated SPQ for voice applications. The performance
of the proposed algorithm is compared with other existing algorithms through
simulations using the OPNET modeler. Simulation and Statistical results show
that the proposed algorithm has given 1.5 times performance improvement in
terms of throughput and delay than the existing algorithms for the real time
audio and video applications."
2016
J-Pdf
Artikel Jurnal  Universitas Indonesia Library
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Muksin Saleh
"In this study, modeling of the crossing point temperature (CPT) phenomenon in the low-temperature oxidation of coal was carried out using COMSOL Multiphysics®. Low-temperature oxidation can lead to spontaneous combustion of coal stockpiles. The CPT phenomenon was modeled with the kinetics data obtained from a prior laboratory experimental study. The coupling of the heat-transfer phenomenon through conduction and convection determined the thermal evolution model. In this case, coal received the initial heat of the oven temperature increases. As the coal temperature rose, the heat generated from oxidation was released into the environment via conduction and convection. Meanwhile, oxidation products and oxygen were transferred by convection and diffusion. The effects of moisture and the humidity were not considered. The outcomes of modeling were validated through comparison with the results of experimental tests, and the modeling result agreed well with the experiment tests, with temperature deviations of about 0.9%. The effects of airflow rate, oxygen concentration, porosity, and the initial temperature on low-temperature coal oxidation were also examined."
2017
J-Pdf
Artikel Jurnal  Universitas Indonesia Library
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"pada pertengahan tahun 2000 terjadi kecelakaan pesawat helikopter, dimana proses terjadinya kecelakaan tersebut yaitu pada saat melakukan take off kemudian terjadi lost power sehingga pesawat berputar ke kiri berbalik arah dan mendarat dengan impact cukup keras. berangkat dari kasus tersebut dilaksanakan penelitian dengan maksud untuk menganalisis sebab-sebab terjadinya kerusakan material tersebut."
050 JDST 2:1 (2011)
Artikel Jurnal  Universitas Indonesia Library
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Mohammad Syafrizal
"This paper describes the
case study of Semanggi intersection in Jakarta, a dynamic model of emission
reduction in the land transportation sector. The urban transportation system is
a complex system with multiple variables, feedback loops, and is influenced by
social, economic and environmental factors. The proposed model consists of two
submodels: Vehicle Fleet and Emission Calculation. The model runs in
Powersim Studio software using data from the Indonesia Japan Economic
Partnership Agreement, and the Traffic
Management Centre of the Indonesian National Police. The test was conducted by developing two scenarios:
Business As Usual and Intention. The estimated results to be
obtained using the first scenario in 2021 should be 1,113,398 units, while the
second scenario is estimated to produce 850,733 units. We hypothesize that the
Intentional Approach will have a more significant impact than the Technical
Approach, which requires more investment. The Intentional Approach is designed to improve the intention of
private car users to switch to public transportation. The Technical Approach to the emission measurement of every
vehicle in a certain area is the data of vehicle emission which are usually
taken to determine the current condition. This research will no doubt
have a positive impact on emission reduction in Jakarta."
2016
J-Pdf
Artikel Jurnal  Universitas Indonesia Library
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Md. Faizul Huq Arif
"In this paper, two highly
sensitive photonic crystal fiber (PCF) structures with microstructure core and cladding
have been demonstrated for Ethanol sensing. The
microstructure core of both proposed
PCFs is designed with supplementary holes in an octagonal formation. We have investigated the
relative sensitivity and the confinement loss of the proposed PCF structures
employing a full
vectorial finite element method (FEM). The proposed PCFs work at a wide
transmission band covering 0.8 µm to 2 µm and exhibit high sensitivity and low
confinement loss simultaneously. The numerical analysis shows that the circular shape of air holes in the first ring is a more
salient attribute for
increasing sensitivity and the presence of the square shape of air holes in the first ring shows
better performance to reduce confinement loss."
2016
J-Pdf
Artikel Jurnal  Universitas Indonesia Library
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"struktur dan beban guna. Pertimbangan untuk propelan meliputi masalah ekonomi dan penyimpanan, energetik dan ha-hal yang berkaitan dengan cara kerja motor roket. Pertimbangan untuk struktur meliputi ketahanan material, kondisi lingkungan, pengerjaan, densitas dan faktor ekonomi. Faktor ekonomi yaitu mengenai harga dan ketersediaannya di pasaran. Dalam penyimpanan sangat penting dipertimbangkan sifat-sifat korosifitas, bahaya ledakan dan kebakaran, sifat racun, sifat fisika dan sifat kimia. Pertimbangan faktor energetik, berhubungan dengan jumlah gaya dorong, kemungkinan dapat dimatikan-dihidupkan, waktu penggunaan, jumlah propelan dan antisipasi mengatasi kegagalan. Di samping itu juga pertimbangan dengan cara kerja motor roket, untuk propelan cair. Ketahanan struktur terhadap ruptur, batas elastisitas, modulus Young, kelelahan, keuletan statik dan sifat dapat ditempa. Material harus tahan terhadap lingkungan meliputi keadaan panas, dingin, cairan korosif, sinar matahari, dan hantaman partikel-partikel ionik. Pertimbangan densitas berpengaruh pada berat struktur dan berpengaruh pada indeks konstruksi. Material juga harus mudah didapatkan dan harganya terjangkau
"
620 DIR 4:2 (2009)
Artikel Jurnal  Universitas Indonesia Library
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Adeyemi Hezekiah Oluwole
"In
this study, a fuzzy-based expert system called the Pain Intensity Prediction
Expert System (PIPES) was developed to predict pain severity risk (PSR) in
shoveling-related tasks. The primary objective was to develop a non-changing rating risk assessment ergonomics
tool that both efficient
and comparable with those obtained from human ergonomics experts in the field
of application. PIPES used fuzzy set
theory (FST) to make decisions about the level of pain associated with a
selected worker base on the measured task variables, namely scooping rate, scooping time, shovel load, and
throw distance as input and PSR as the result. Values obtained from variable measurements from a sand shoveling task
were run with PIPES, and the results were compared with the workers?
self-reported pain (WSRP) intensity using a numeric rating scale (NRS) tool. The result of validation showed that there was a
strong positive relationship between WSRP NRS and PIPES NRS, with a correlation
coefficient of 0.70. The independent sample t-test for mean difference showed that WSRP had a statistically significantly lower level of NRS (4.35 ± 2.1)
compared to PIPES (4.75 ± 2.2), t (38) = - 0.591, p = 0.558. With a
significance level of 0.001 at 95% confidence, the groups? means were not
significantly different. The study developed an expert system, PIPES, which can be used as a computerized
representation of ergonomics experts, who are scarce. PIPES can be applied to construction industries, sand mine locations,
and any workplace where materials are manually moved using a shovel."
2016
J-Pdf
Artikel Jurnal  Universitas Indonesia Library
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