83 research outputs found
Arbitrary squeeze flow between two disks
A viscous incompressible fluid is contained between two parallel disks with arbitrarily shrinking width h(Ï„). The solution is obtained as a power series in a single nondimensional parameter (squeeze number) S, for small values of S in contrast to the multifold series solution obtained by Ishizawa in terms of an infinite set of nondimensional parameters. The gap width h(Ï„) is obtained for different states: when the top disk moves with constant velocity, constant force or constant power
Enhanced Low Latency Queuing Algorithm for Real Time Applications in Wireless Networks
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
Nature Cure and Non-Communicable Diseases: Ecological Therapy as Health Care in India
With rapidly increasing rates of non-communicable diseases, India is experiencing a dramatic public health crisis that is closely linked to changing lifestyles and the growth of the middle-class. In this essay we discuss how the practice of Nature Cure provides a way of understanding the scale and scope of the crisis, as it is embodied, and a way to understand key elements of a solution to problems that the crisis presents for institutionalized health care. As institutionalized in contemporary India, Nature Cure involves treatment and managed care using earth, air, sunlight, and water as well as a strict dietary regimen. In this regard, the essay shows how Nature Cure’s bio-ecological orientation toward public health, which is grounded in the history of its modern incorporation into India, provides an expansionist, ecological model for holistic care that counters the reductionist logic of bio-medical pharmaceuticalization
Effect of FCNC mediated Z boson on lepton flavor violating decays
We study the three body lepton flavor violating (LFV) decays , and the semileptonic decay in the flavor changing neutral current (FCNC) mediated boson
model. We also calculate the branching ratios for LFV leptonic B decays,
, , and the
conversion of muon to electron in Ti nucleus. The new physics parameter space
is constrained by using the experimental limits on and
. We find that the branching ratios for and processes could be as large as and . For other LFV B decays the branching ratios are found to be too
small to be observed in the near future.Comment: 15 pages, 8 figures, typos corrected, one more section added, version
to appear in EPJ
Effects of R-parity violation on CP asymmetries in decay
We have studied new CP violating effects in decay mode,
that can arise in Minimal Supersymmetric Standard Model with R-parity
violation. We have estimated how much R-parity violation modifies the Standard
Model predictions for CP asymmetries within the present bounds. We found that
in the R-parity violating model, the rate asymmetry () is suppressed
(about 10 times) and the asymmetry parameter is enhanced
(approximately times) with respect to the SM predictions.Comment: Latex, 8 page
Biomaterial based modulation of macrophage polarization: a review and suggested design principles
Macrophages have long been known for their phagocytic capabilities and immune defence; however, their role in healing is being increasingly recognized in recent years due to their ability to polarize into pro-inflammatory and anti-inflammatory phenotypes. Historically, biomaterials were designed to be inert to minimize the host response. More recently, the emergence of tissue engineering and regenerative medicine has led to the design of biomaterials that interact with the host through tailored mechanical, chemical and temporal characteristics. Due to such advances in biomaterial functionality and an improved understanding of macrophage responses to implanted materials, it is now possible to identify biomaterial design characteristics that dictate the host response and contribute to successful tissue integration. Herein, we begin by briefly reviewing macrophage cell origin and the key cytokine/chemokine markers of macrophage polarization and then describe which responses are favorable for both replacement and regenerative biomaterials. The body of the review focuses on macrophage polarization in response to inherent cues directly provided by biomaterials and the consequent cuesthat result from events related to biomaterial implantation. To conclude, a section on potential design principles for both replacement and regenerative biomaterials is presented. An in depth understanding of biomaterial cues to selectively polarize macrophages may prove beneficial in the design of a new generation of ‘immuno-informed’ biomaterials that can positively interact with the immune system to dictate a favorable macrophage response following implantation
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