703 research outputs found
Extraction of chromium from wastewater by emulsion ionic liquid membrane / Rahul Kumar Goyal
No full textRegulatory Structure for Financial Stability and Development
No full textTo understand the appropriate regulatory response to the crisis, we start from the basic market failures that justify regulation in financial markets. Neglecting these first principles contributed to the market and regulatory failures. Regulation that induces better outcomes through creating correct incentives for market participants is the key to reform. A combination of micro and macro prudential regulation can moderate procyclicality, information failure and market power. Better national and global coordination of regulators is also required. Global prudential standards can push financial firms to choose safe over risky strategies, by removing the moral hazard from bailouts, and assuring that a competitor is not adopting risky strategies either. Universal application of basic standards prevents regulatory arbitrage. A pure principles-based regulatory approach maybe too flexible, but principle-based rules retain sufficient operational flexibility and universality. This analysis is applied to regulation in emerging market economies (EMEs), where development of financial markets is a major regulatory goal along with stability.market failures, incentives, procyclicality, coordination, rules versus principles, development
Dynamics of Network Formation Processes in the Co-Author Model
No full textThis article studies the dynamics in the formation processes of a mutual consent network in game theory setting: the Co-Author Model. In this article, a limited observation is applied and analytical results are derived. Then, 2 parameters are varied: the number of individuals in the network and the initial probability of the links in the network in its initial state. A simulation result shows a finding that is consistent with an analytical result for a state of equilibrium while it also shows different possible equilibria.Dynamics, Network, Game Theory, Model,Simulation, Equilibrium, Complexity
Isolated propeller aeroacoustics at positive and negative thrust Author links open overlay panel
No full textUsing propellers in negative thrust conditions can potentially result in many benefits, such as a steeper descent, a reduced landing run, reduced community noise, energy regeneration, etc. However, the aerodynamics and aeroacoustics of propellers in this regime are not well understood. This paper presents an aeroacoustic analysis of an isolated propeller operating in both positive and negative thrust conditions, using scale-resolved lattice-Boltzmann very large eddy simulations and the Ffowcs Williams & Hawkings analogy. The propeller was operated at a constant tip Mach number so that any differences in tonal noise between positive and negative thrust conditions were due to changes in blade loading. Results showed that the flow separation around the blades in the negative thrust case led to a 2 to 6 times higher standard deviation in integrated thrust compared to the positive thrust case. The blade loading in the negative thrust case shows the amplitude of fluctuations up to 18% for inboard sections and up to 30% near the blade tip compared to the time-averaged loads. The noise in the propeller plane is 10 dB higher in the positive thrust regime than in the negative thrust regime at a given absolute thrust level of
. The lower noise at negative thrust is caused by two factors: the lower magnitude of the negative torque compared to the positive torque at a given thrust level and the shift of the blade loading inboard in the negative thrust condition due to the stall of the blade tip. Along the propeller axis, the negative thrust regime has 13-15 dB higher noise because of the increased broadband noise generated by the flow separation. In the negative thrust case, the noise along the propeller axis (89 dB) and propeller plane (92 dB) are comparable. However, this is not the case for the propulsive case. The comparison of noise in the vicinity of the propeller plane showed that using the propellers in negative thrust conditions allows for a steeper and quieter descent compared to a conventional descent; as long as the magnitude of the negative torque produced is equal to or less than the torque required to operate the propeller in a conventional landing
Organizational change through effective leadership at CISCOM
No full textThis case is a turnaround success story of a government undertaking
CISCOM. CISCOM faced some tough times during 1998 to 2003 and became a
dysfunctional organization. As is the case with many government organizations
which provide job security, time bound promotions, and no individual and
departmental targets to achieve, employees do not feel the need to change their
style of working or to become more productive. The government usually closes
down such organizations after suffering heavy losseswhich means loss of jobs and
loss of revenue to the government exchequer. However, with the change in leadership,
CISCOM once again realized its importance in the Science and Technology scenario
of India and became an immensely productive organization. The new director Mr.
Goyal introduced some novel steps, which made the organization more integrated
and responsive to change. This case study traces the management changes that
CISCOM experienced for a successful turnaround under the transformational
leadership of Mr Goyal
Inferring object states and articulation modes from egocentric videos
No full textWe develop algorithms for understanding objects from the point of view of interacting with them. There are two key aspects to obtaining such an understanding. First, objects can occur in different states and we need features that are sensitive to such states. Second, different objects can be articulated in different ways and we need to understand how to correctly infer their modes of articulation. We propose self and weakly supervised techniques to obtain such an understanding of objects purely through observation of how humans interact with the world around them through their hands. Our experiments on the challenging EPIC- KITCHENS dataset show the merits of using human hands as a probe for understanding objects.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2023-05-01The student, Rishabh Goyal, accepted the attached license on 2021-04-27 at 12:26.The student, Rishabh Goyal, submitted this Thesis for approval on 2021-04-27 at 13:39.This Thesis was approved for publication on 2021-04-28 at 09:43.DSpace SAF Submission Ingestion Package generated from Vireo submission #16585 on 2021-09-16 at 17:06:08Made available in DSpace on 2021-09-17T02:34:49Z (GMT). No. of bitstreams: 2
GOYAL-THESIS-2021.pdf: 26378428 bytes, checksum: 5fb34e7c3f1a83a84f3c5ba07fefd80f (MD5)
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Previous issue date: 2021-04-28Embargo set by: Seth Robbins for item 118591
Lift date: 2023-09-17T02:34:57Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemAuthor requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Onl
Molecular Phylogeny of OVOL Genes Illustrates a Conserved C2H2 Zinc Finger Domain Coupled by Hypervariable Unstructured Regions
No full textOVO-like proteins (OVOL) are members of the zinc finger protein family and serve as transcription factors to regulate gene expression in various differentiation processes. Recent studies have shown that OVOL genes are involved in epithelial development and differentiation in a wide variety of organisms; yet there is a lack of comprehensive studies that describe OVOL proteins from an evolutionary perspective. Using comparative genomic analysis, we traced three different OVOL genes (OVOL1-3) in vertebrates. One gene, OVOL3, was duplicated during a whole-genome-duplication event in fish, but only the copy (OVOL3b) was retained. From early-branching metazoa to humans, we found that a core domain, comprising a tetrad of C2H2 zinc fingers, is conserved. By domain comparison of the OVOL proteins, we found that they evolved in different metazoan lineages by attaching intrinsically-disordered (ID) segments of N/C-terminal extensions of 100 to 1000 amino acids to this conserved core. These ID regions originated independently across different animal lineages giving rise to different types of OVOL genes over the course of metazoan evolution. We illustrated the molecular evolution of metazoan OVOL genes over a period of 700 million years (MY). This study both extends our current understanding of the structure/function relationship of metazoan OVOL genes, and assembles a good platform for further characterization of OVOL genes from diverged organisms
Pain perception and procedural tolerance with computer controlled and conventional local anesthetic technique: An in vivo comparative study
No full textAim: The aim of this study was to evaluate and compare the Pain Perception and Procedural Tolerance (PPPT) by the pediatric patients, while experiencing ′Computer Controlled Local Anesthetic Technique′ (CCLAD, Wand) and ′Conventional local anesthetic technique′. Material and Methods: Fifteen subjects, of age 8-10 years requiring local anesthesia on both sides of the dental arch for the purpose of extraction were selected for this study. In this cross-over design study, randomization was done to allocate the type of local anesthetic technique to be used first, children who received CCLAD (Wand) during ′First Anesthetic Exposure′ (FAE) visit subsequently received ′Conventional anesthetic technique′ during ′Second Anesthetic Exposure′ (SAE) visit and vice versa. Behavior assessment using ′Frankel′s Behavior Rating Scale′ (FBRS) and anxiety assessment using ′Faces Version of Modified Child′s Dental Anxiety Scale′ (MCDAS f ) were done prior to the anesthetic exposure. ′Wong Baker′s Facial Pain Scale′ (WBFPS) was used to assess the child′s pain perception to each of the two techniques, immediately after the injection. Various physiological parameters like ′Heart Rate′(HR), ′Respiratory Rate′(RR), and ′Oxygen Saturation′ were measured during pre-operative phase, LA-phase, post LA-phase, Extraction phase and post Extraction phase, during FAE and SAE. Results: Paired t-test revealed a very highly significant (P = 0.001) difference between CCLAD (Wand) and conventional during SAE. Non-significant difference was observed when physiological parameters were compared at various intervals between the two anesthetic techniques. Conclusion: CCLAD (Wand) provides lesser pain perception as compared to conventional local anesthetic technique
Arrested root growth and concomitant failure of eruption of a developing tooth following open reduction and internal fixation of a pediatric mandibular fracture
No full textMandible is one of the commonly fractured bone in children during maxillofacial trauma. These factures are usually managed conservatively but sometimes require open reduction and internal fixation (ORIF). Management of mandibular fracture in children is influenced by the presence of developing permanent tooth buds, minimal anchorage from primary teeth and facial growth and development. Although, there have been technical and material advancements with ORIF, it is still associated with complications related to growth and damage to developing teeth. This case report describes a case of mandibular parasymphyseal fracture managed successfully with open reduction and internal fixation using a miniplate and a consequent cessation of root growth and eruption failure of a mandibular canine present in the fixation area
Aerodynamics and Far-field Noise Emissions of a Propeller in Positive and Negative Thrust Regimes at Non-zero Angles of Attack
No full textThis paper studies the effect of operation at non-zero angles of attack on the aerodynamic performance and far-field noise emissions of an isolated propeller operating at positive and negative thrust conditions. To achieve this, scale-resolved lattice-Boltzmann very large eddy simulations coupled with the Ffowcs Williams & Hawkings analogy have been used. The results show that when the propeller operates with a 10◦ angle of attack at the positive thrust condition, the blade loading increases on the advancing side and decreases on the retreating side, leading to a 9.6% increase in integrated thrust (when computed along the propeller axis) and a negligible increase (0.1%) in propeller efficiency. Conversely, at the negative thrust condition, the operation at 10 deg angle of attack results in a 7.9% decrease in thrust magnitude and an 11.1% reduction in energy-harvesting efficiency. In this condition, the positively cambered blade sections exhibit dynamic stall at the 10◦ angle of attack, resulting in broadband fluctuations of up to 10% of the mean loading. As a result of the opposite change in absolute blade loading in the negative thrust condition compared to the positive thrust condition at the 10◦ angle of attack, the change in the noise directivity is also the opposite. Whereas in the positive thrust case, the noise increases in the region from which the propeller is tilted away (i.e., below the propeller at a positive angle of attack), in the negative thrust case, it is the other way around. This study highlights the need to account for non-zero angles of attack in propeller design and optimization analyses
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