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Pages
- Title
- AN ENERGY EFFICIENT ROUTING PROTOCOL FOR WIRELESS SENSOR NETWORKS
- Creator
- Lara, Aurobinda
- Date
- 2012-04-27, 2012-05
- Description
-
Wireless distributed microsensor systems will enable the reliable monitoring of a variety of environments for both civil and military...
Show moreWireless distributed microsensor systems will enable the reliable monitoring of a variety of environments for both civil and military applications. A wireless sensor network consists of nodes that can communicate with each other via wireless links. One way to support efficient communication between sensors is to organize the network into several groups, called clusters, with each cluster electing one node as the head of cluster. Energy efficiency is of great importance for the wireless sensor network (WSN). A popular way to save energy is to construct clusters for data aggregation and forwarding. In this thesis a distributed cluster algorithm is studied to improve the energy consumption efficiency. It was observed that the cluster head has to lie within the transmission range of the base station (sink node) and the distance between cluster head and base station is critical for the energy consumption performance, we proposed a pseudo-cluster and virtual hierarchical clustering scheme (PC-LEACH), which considers the power level of the non-cluster head nodes and the residual energy level during the cluster head selection stage. Consequently we could better balance the chance of being cluster head for all nodes. Simulation results show that the scheme is able to result in longer network lifetime than the well-known protocol LEACH.
M.S. in Electrical Engineering, May 2012
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- Title
- Signal Compression or Expansion System Using Variable Azimuth Magnetic Recording
- Creator
- Camras, Marvin
- Date
- 4/24/2009, 1970-09-08
- Description
-
Sponsorship: IIT Research Institute
United States Patent
- Title
- Hierarchical Structured Abstract Data Organization System
- Creator
- Frieder, Ophir, Kapoor, Sanjiv
- Date
- 2012-06-27, 2012-06-26
- Description
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A method in a data processing system and apparatus for organizing files, web pages, or web site members organized in a traditional first...
Show moreA method in a data processing system and apparatus for organizing files, web pages, or web site members organized in a traditional first hierarchical file structure that is on a recordable medium of a data processing system. A user-defined metalabel is assigned to each of the electronic files, web pages, or web site members. The electronic files, web pages, or web site members are organized as a function of the metalabels into a second hierarchical file structure existing simultaneously with the first hierarchical file structure on the recordable medium of the data processing system. The files, web pages, or web site members can be organized or grouped by the metalabels for efficient searching or following conversations of group members on social networking sites.
Sponsorship: Illinois Institute of Technology
United States Patent
Primary US Patent Classification 707/802
US Patent Classification 707/805
US Patent Classification 707/822
US Patent Classification 707/828
US Patent Classification 707/829
US Patent Classification 715/733
US Patent Classification 715/736
US Patent Classification 715/845
US Patent Classification 715/853
International Patent Classification G06F7/00
International Patent Classification G06F17/30
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- Title
- Alleviating Homelessness in Chicago
- Creator
- Degroff, Justin
- Date
- 2011, 2011-05
- Description
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Alleviating homelessness in Chicago through the creation of a network of self-sufficient, revenue generating support nodes.
- Title
- Magnetic Duplicating Method and Means
- Creator
- Camras, Marvin
- Date
- 1954-01-19
- Description
-
Sponsorship: Armour Research Foundation of Illinois Institute of Technology
United States Patent
- Title
- Test of a 40 hp Halladay chasis
- Creator
- Fors, A. F., Kuehn, H. R., Semerak, A. W.
- Date
- 2009, 1913
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/testof40hphallad00fors
Thesis (B.S.)--Armour Institute of Technology
- Title
- ENHANCEMENT OF BIODESULFURIZATION IN RHODOCOCCUS SPECIES (IGTS8) BY THE EXPRESSION OF VITREOSCILLA HEMOGLOBIN
- Creator
- Shivdas, Vrushali D.
- Date
- 2013, 2013-07
- Description
-
The bacterium Rhodococcus sp. IGTS8 contains the dsz operon, which encodes a three enzyme pathway (the “4S pathway”) that is able to...
Show moreThe bacterium Rhodococcus sp. IGTS8 contains the dsz operon, which encodes a three enzyme pathway (the “4S pathway”) that is able to mineralize the sulfur contained in dibenzothiophene (DBT), an organic sulfur containing molecule found in petroleum. The gene vgb, which encodes Vitreoscilla hemoglobin (VHb), has shown wide usefulness in enhancing productivity and other useful properties when expressed in heterologous hosts. We engineered strain IGTS8 to express VHb and measured the effects on growth and desulfurization of DBT, using minimal medium containing DBT as the sole source of sulfur. VHb was clearly detected in the engineered strain using the standard COdifference spectral analysis, but its level (0.38-0.63 nmoles/gm wet weight of cells) was about 10-fold lower than commonly seen for expression of VHb in other heterologous bacterial hosts. The VHb-expressing strain was tested for growth at both low and high aeration in minimal medium containing DBT as sole sulfur source; growth was about 50% lower at low aeration compared with high aeration. Despite this, metabolism of DBT (as detected by accumulation of the end product of the 4S pathway, 2-Hydroxy biphenyl (2-HBP), in the growth medium) was about 30 % higher in the low aeration compared to the high aeration culture. A possible explanation for these results is direct enhancement of the first two (monooxygenase) steps in conversion of DBT to 2-HBP. It was thus concluded from the studies that the expression of vgb in Rhodococcus sp. IGTS8 enhances the process of biodesulfurization under conditions of low aeration
M.S. in Biology, July 2013
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- Title
- Digital Urban Park
- Creator
- Thornton, Alastair
- Date
- 5/4/2011, 2011-05
- Description
-
This project is a park that utilizes social networks and interactivity to convey and make physical the internet. This is explored through...
Show moreThis project is a park that utilizes social networks and interactivity to convey and make physical the internet. This is explored through three parts and varying levels of group interaction between both the users of the space and by the spaces direct influence from the internet.
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- Title
- HIGH PERFORMANCE, HIGH STABILITY AND LOW POWER SRAM DESIGN BY USING CARBON NANOTUBE FIELD EFFECT TRANSISTORS
- Creator
- Wang, Wei
- Date
- 2012-07-07, 2012-07
- Description
-
As the feature size of silicon semiconductor devices scales down to nanometer range, planar bulk CMOS design and fabrication encounter...
Show moreAs the feature size of silicon semiconductor devices scales down to nanometer range, planar bulk CMOS design and fabrication encounter significant challenges. This situation is exacerbated when it comes to SRAM, as SRAM takes a large part of power consumption and area overhead in modern VLSI processor designs. To achieve higher performance, stability and lower power consumption, carbon nanotube (CNT) has been introduced to SRAM design as an alternative material. The semiconducting single-walled CNTs are promising candidates for the channel material of CMOS devices because of two advantages over the other semiconductor materials: high ON current, leading to high speed and low OFF current, leading to less leakage power. In this research work, characterizing work of technology parameters for 6T carbon nanotube field effect transistor (CNFET) SRAM cell is performed for basic understanding of the relationship between SRAM delay/power and CNFET technology parameters. Stability issue is studied by investigating the diameter and transistor ratio impacts on the SRAM static noise margin (SNM). A stability-optimized 6T CNFET SRAM cell achieves 38.88% reading delay reduction, 21.61% writing delay reduction, 85.65% reading power reduction, 5.88% writing power reduction, 97.80% leakage power reduction, 41.41% SNM increment, 91.23% reading power-delay product (PDP) reduction and 26.23% writing PDP reduction, compared with conventional silicon MOSFET SRAM cell. To mitigate major CNT imperfection impacts on CNFET circuits, a misalignment immune SRAM design method is proposed to eliminate CNT misalignment problem by using etching region defined in circuit layout; and a diameter variation sensing and compensating system is designed to mitigate the negative impacts of CNT diameter variation on SRAM delay and power consumption. A hybrid silicon/CNT 4T SRAM cell design is proposed for low-power high-density cache application, which is better than conventionally used 6T SRAM in terms of power consumption and circuit area. Finally, a design flow of high performance, high stability and low power SRAM is summarized.
Ph.D. in Electrical Engineering, July 2012
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- Title
- Test of a new type of storage cell
- Creator
- Allyn, A. J., Torrance, R. S.
- Date
- 2009, 1906
- Publisher
- Armour Institute of Technology
- Description
-
http://www.archive.org/details/testofnewtypeofs00ally
Thesis (B.S.)--Armour Institute of Technology
- Title
- New Housing Model "Flexible Housing Components": Final Booklet_05-02-12
- Creator
- Quinn, Aidan
- Date
- 2012-05-02, 2012-05
- Description
-
This project is a focus on spatial flexibility. The idea is to generate housing components that focuses on flexibility in order to create...
Show moreThis project is a focus on spatial flexibility. The idea is to generate housing components that focuses on flexibility in order to create space that is defined by the user.
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- Title
- Transducer System Having a Series of Cores with First and Second Windings with A.C. Signals Applied Thereto
- Creator
- Camras, Marvin
- Date
- 4/24/2009, 1970-01-06
- Description
-
Sponsorship: IIT Research Institute
United States Patent
- Title
- Cross Field Transducer Head with Housing as Cross Field Return Path
- Creator
- Camras, Marvin
- Date
- 4/24/2009, 1970-05-19
- Description
-
Sponsorship: IIT Research Institute
United States Patent
- Title
- Magnetic Recorder Sound Unit
- Creator
- Camras, Marvin
- Date
- 1958-06-24
- Description
-
Sponsorship: Armour Research Foundation of Illinois Institute of Technology
United States Patent
- Title
- Method and Means of Magnetic Recording
- Creator
- Camras, Marvin
- Date
- 1944-06-13
- Description
-
Sponsorship: Armour Research Foundation
United States Patent
- Title
- Winding and Reeling Mechanism
- Creator
- Zenner, Raymond E.
- Date
- 1954-04-13
- Description
-
Sponsorship: Armour Research Foundation of Illinois Institute of Technology
United States Patent
- Title
- DYNAMICS OF A THREE-DIMENSIONAL FOUR-BAR LINKAGE SUBJECT TO RANDOM EXTERNAL FORCING
- Creator
- Lytell, Mark R.
- Date
- 2011-11-15, 2011-12
- Description
-
This thesis explores the dynamics of a three-dimensional four-bar mechanical linkage subject to random external forcing. The Lagrangian...
Show moreThis thesis explores the dynamics of a three-dimensional four-bar mechanical linkage subject to random external forcing. The Lagrangian formulation of the equations of motion are index-3 stochastic di erential-algebraic equations (SDAE) that describe the time evolution of the sample paths of the generalized coordinates, velocities, and Lagrange multipliers as stochastic processes. We solve the SDAEs using two di erent approaches: inverse dynamics, Case Study 1, via independent, successive solution of the nonlinear equations for each kinematic variable, where the time evolution of one generalized coordinate is prescribed; and direct dynamics, Case Study 2, via direct solution of the SDAEs in the index-1 formulation, using fourth-order stochastic backward di erentiation formula (BDF) with modi ed Newton iteration and position and velocity stabilization (Ascher and Petzold [2]), where the (deterministic) input driving torque is prescribed. For the particular application of a three-dimensional swing gate security system, we conduct numerical experiments for both approaches. In Case Study 1, we simulate the random external forcing as a Gaussian wind speed process that applies stochastic wind drag onto the gate. The kinematic variables are deterministic, while the required input driving torque is a stochastic process. In Case Study 2, we apply the external forcing as a resistive torque with additive Gaussian noise modeling the wind drag; the kinematic variables are stochastic processes. For both cases, we apply four mean wind speeds: 0 mph (deterministic only), 10 mph, 20 mph, and 30 mph, from which we compute the deterministic solution and three stochastic sample paths for each stochastic process. The overall conclusions are that direct solution is possible for inverse dynamics, that the solution of index-1 SDAEs in multibody dynamics is tractable since the mass matrix is symmetric and positive de nite, and that the deterministic solution is the expectation of the sample paths.
M.S. in Applied Mathematics, December 2011
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- Title
- GENOME ANNOTATION AND PHYLOGENETIC ANALYSIS OF 27 SALMONELLA STRAINS BASED ON BIOINFORMATIC ANALYSIS OF RESPECTIVE GENOMES AND THREE GENES
- Creator
- Li, Xinyue
- Date
- 2013-04-15, 2013-05
- Description
-
Salmonella is the most common food-borne bacterial infectious pathogen worldwide. Different serovars of Salmonella are capable of infecting...
Show moreSalmonella is the most common food-borne bacterial infectious pathogen worldwide. Different serovars of Salmonella are capable of infecting different kinds of hosts, such as humans, mice, pigs, chickens, and can also lead to different syndromes, such as enterica fever, enterocolitis and diarrhea, bacteremia and chronic asymptomatic carriage. Although Salmonella strains are quite diverse, strains within the same serovar usually infect the same host and cause similar symptoms. Thus, it is important, especially in food-borne disease outbreaks, to know which type of Salmonella is present. The current method of typing Salmonella is based on the Kaufmann-White scheme and MLEE, which are laborious and expensive. Although the reliability of this method has not been previously verified, the evolutionary relationship reflected by phylogenetic trees can be a possible alternative to the way of typing the Salmonella strains; this method would be less labor intensive and more economical. MLST is considered as a “gold standard” of typing for many species includes Salmonella. And genome sequence, which certainly reflects the evolutionary relationship of strains, is the most ideal data to construct a more reliable phylogenetic tree; however, genome sequencing is also a laborious and expensive process. Thus, conserved and ubiquitous gene data, which can be accessed with little effort, are generally used to minimize cost. Using16s rRNA is the most widely used method. In this study, 27 Salmonella genome sequences are annotated with RAST, and phylogenetic trees are constructed using three software, (phylip3.69, MEGA5.1, and CVTree). And MLST is also used to construct phylogenetic tree in this study, and the result is used to be compared with genome phylogenetic tree to find a more reliable reference tree. Although Neighbor-Joining method is the only algorithms x available in CVTree, phylip3.69 and MEGA5.1 are capable to use three separate algorithms(Maximum Parsimony, Maximum Likelihood, and Neighbor-Joining, respectively). Finally, these trees are compared in an effort to find a good alternative to replace the reference phylogenetic tree. In this study, it was determined that the groEL gene would be the best replacement.
M.S. Biological and Chemical Sciences, May 2013
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- Title
- Reclaiming the Lake: Ecological Infrastructure as a Catalyst for Change
- Creator
- Searle, Gideon
- Date
- 2010-07-30
- Title
- Method of Making Enriched Radioisotopes by Cation Fixation
- Creator
- Feng, Paul Y.
- Date
- 4/23/2009, 1965-01-26
- Description
-
Sponsorship: IIT Research Institute
United States Patent