Density engineering via inter-condensate dipole-dipole interactions: axial confinement and supersolids

Exploiting the long-range and anisotropic nature of dipole-dipole interactions, we show that the density of a {\em target} dipolar Bose-Einstein condensate can be engineered and axially confined using a trapped {\em control} dipolar condensate. Increasing the number of control condensates leads to exotic ground state structures, including supersolids and an incoherent array of density peaks. Single and double-peaked periodic structures are observed as a function of spacing between the control condensates. Our ideas may be generalized to engineer any other dipolar quantum system using another one of a similar dipole character. For instance, a Rydberg atom with electric dipole moment may be confined and manipulated using a trapped polar molecule and vice versa via long-range dipole-dipole interactions.Comment: 7 pages, 7 figure

Product Design Framework Based on the Concept of Novelty and Typicality

Industrial Designing is not only based on the product that needs to be designed. To bring in the different aesthetic appeal of a product one have to first connect to the customers and form a team of experts. The experts can be from various fields associated with the product in terms of functionality, serviceability, aesthetic preference. Then, various surveys needs to be conducted. The results of this surveys for a specific product gives further information on various aspects of the product that needs to be developed so that the product is not only made qualitatively but it can also compete in the market. The project considers all the various methodologies that has an impact on the customer for a particular product due to design properties like novelty, typicality, etc. on the product design. It focuses mainly on evaluating the novelty of the product and how this novelty in terms of product design has an impact on the customers. This paper defines novelty and typicality used in product design in various ways studied through three different case studies. First case study is a preliminary case study to observe the effect of novelty and typicality on aesthetic appearance of a product. The second case study explores the descriptors related to novelty and typicality separately and the kind of products that can be associated with them. The third case study, explores the relation of novelty and typicality with the descriptors assigned to them and the variation in them when taken separately instead of bipolar adjectives. It also focuses on the difference of opinion among the male and female students in terms of novelty and typicality effect on aesthetic appearance of the selected product

Observation of Enhanced Diffusivity in Magnetically Powered Reciprocal Swimmers

We report on the development of a system of micron-sized reciprocal swimmers that can be powered with small homogeneous magnetic fields, and whose motion resembles that of a helical flagellum moving back and forth. We have measured the diffusivities of the swimmers to be higher compared to nonactuated objects of identical dimensions at long time scales, in accordance with the theoretical predictions made by Lauga Phys. Rev. Lett. 106, 178101 (2011)]. Randomness in the reciprocity of the actuation strokes was found to have a strong influence on the enhancement of the diffusivity, which has been investigated with numerical calculations

Intracytoplasmic sperm injection with assisted oocyte activation resulting in successful pregnancies and live birth in couples with globozoospermia: A report of two cases

Globozoospermia, characterized by round-headed acrosomeless sperm, is a rare and severe form of teratozoospermia. We report a successful pregnancy in two cases of total globozoospermia after intracytoplasmic sperm injection (ICSI) with oocyte activation with calcium ionophore. In the first case, globozoospermia was diagnosed on the day of oocyte retrieval. Among 11 retrieved oocytes, only one fertilized after ICSI. The pregnancy test 2 weeks after embryo transfer was negative. Two months later, the patient underwent ovarian stimulation again. The 12 retrieved oocytes were exposed to calcium ionophore medium following ICSI. Four oocytes were fertilized and two blastocysts were transferred resulting in a clinical pregnancy. In the second case, among seven retrieved oocytes, three fertilized after ICSI and assisted oocyte activation, and two 8-cell embryos were transferred, resulting in a positive pregnancy. The successful outcome here justifies the use of ICSI with oocyte activation to improve the pregnancy rate significantly when dealing with globozoospermia

Using Thermal Ratchet Mechanism to Achieve Net Motility in Magnetic Microswimmers

Thermal ratchets can extract useful work from random fluctuations. This is common in the molecular scale, such as motor proteins, and has also been used to achieve directional transport in microfluidic devices. In this work, we use the ratchet principle to induce net motility in an externally powered magnetic colloid, which otherwise shows reciprocal (back and forth) motion. The experimental system is based on ferromagnetic micro helices driven by oscillating magnetic fields, where the reciprocal symmetry is broken through asymmetric actuation timescales. The swimmers show net motility with an enhanced diffusivity, in agreement with the numerical calculations. This new class of microscale, magnetically powered, active colloids can provide a promising experimental platform to simulate diverse active matter phenomena in the natural world

Modeling MME Residence Time in LTE based Cellular Networks

In a long term evolution (LTE) based cellular network, the mobility management entity (MME) is responsible for non-data signaling between user equipment of multiple base stations in a geographic region and the core network. Thus, the MME residence time (MRT) is a key parameter required to improve the performance of an LTE based cellular network. The impact of various mobility and network scenarios on cell residence time has been studied in the literature. However, the MRT has not been suitably modeled. Hence, in this paper, we consider diverse mobility and network scenarios. For these scenarios, we model the MRT using various probability distributions. We analyze and evaluate the statistical performance of these distributions in modeling MRT. Finally, we show through exhaustive simulations that the Lognormal and Generalized Pareto distributions are best suited to model the MRT for specific network and mobility scenario