Dynamic Vehicle Routing for Data Gathering in Wireless Networks

We consider a dynamic vehicle routing problem in wireless networks where messages arriving randomly in time and space are collected by a mobile receiver (vehicle or a collector). The collector is responsible for receiving these messages via wireless communication by dynamically adjusting its position in the network. Our goal is to utilize a combination of wireless transmission and controlled mobility to improve the delay performance in such networks. We show that the necessary and sufficient condition for the stability of such a system (in the bounded average number of messages sense) is given by {\rho}<1 where {\rho} is the average system load. We derive fundamental lower bounds for the delay in the system and develop policies that are stable for all loads {\rho}<1 and that have asymptotically optimal delay scaling. Furthermore, we extend our analysis to the case of multiple collectors in the network. We show that the combination of mobility and wireless transmission results in a delay scaling of {\Theta}(1/(1- {\rho})) with the system load {\rho} that is a factor of {\Theta}(1/(1- {\rho})) smaller than the delay scaling in the corresponding system where the collector visits each message location.Comment: 19 pages, 7 figure

On the Differential Geometry of GLq(1∣1)GL_q(1| 1)

The differential calculus on the quantum supergroup GL$_q(1| 1)$ was introduced by Schmidke {\it et al}. (1990 {\it Z. Phys. C} {\bf 48} 249). We construct a differential calculus on the quantum supergroup GL$_q(1| 1)$ in a different way and we obtain its quantum superalgebra. The main structures are derived without an R-matrix. It is seen that the found results can be written with help of a matrix $\hat{R}$Comment: 14 page

Enhanced UPQC control scheme for power quality improvement in wave energy driven PMSG system

This article focuses on enhancing power quality (PQ) in a wave energy-driven permanent magnet synchronous generator (PMSG) system with unbalanced and highly inductive nonlinear loads using a unified power quality conditioner (UPQC). Our proposed control system improves voltage quality, compensates for reactive power, and mitigates harmonics. It ensures constant voltage amplitudes during supply voltage faults, achieving harmonic rejection, reactive power compensation, and enhanced voltage quality through the UPQC's parallel converter. Compared to previous methods, we introduce a frequency-fixed second-order generalized integrator (FFSOGI) quasi-type-1 PLL for efficient load harmonics extraction and source voltage fault detection. Additionally, a robust nonlinear proportional-integral (N-PI) controller, with a feedforward term, regulates the DC-link voltage swiftly and mitigates fluctuations. Our approach ensures compliance with IEEE standards for source current and load voltage harmonics. Comprehensive PSCAD/EMTDC results, utilizing experimental torque and power data from a wave energy converter at the Australian Maritime College model test pool, highlight the advantages of our proposed approach over conventional methods

Mating type idiomorphs of Pyrenophora teres in Turkey

Pyrenophora teres f. maculata (Ptm) and Pyrenophora teres f. teres (Ptt) causes spot form and net form of net blotch diseases of barley, respectively. Although both forms of P. teres are morphologically similar, their symptoms and genetic background differ. In this study, 175 single spore (109 Ptm and 66 Ptt) isolates obtained from different regions of Turkey were evaluated for their mating type distribution and prevalence. Fungal isolates of both forms were verified using species-speci.c polymerase chain reaction (PCR) primers. For mating type determination studies, duplex PCR was performed using MAT-specific single nucleotide polymorphism primers. Sixty and 49 of 109 Ptm isolates were found as MAT1-1 and MAT1-2 types, respectively and 43 and 23 of 66 Ptt isolates were found as MAT1-1 and MAT1-2 types, respectively. These results show the possibility of sexual reproduction among the Ptm isolates in Turkey and Ptt population of Central Anatolia, Turkey. However, the overall pattern of Ptt isolates did not support the sexual reproduction hypothesis in Turkey. Sexual reproduction in the life cycle of P. teres is important since it could lead to genetic and pathogenic variation. As a result of new sexual combinations more virulent pathotypes of P. teres may occur

Children's Foreign Language Anxiety Scale: Preliminary Tests of Reliability and Validity

Foreign language anxiety (FLA), which constitutes a serious problem in the foreign language learning process, has been mainly seen as a research issue regarding adult language learners, while it has been overlooked in children. This is because there is a lack of appropriate tools to measure FLA among children, whereas there are many studies on the scales that aim to measure anxiety levels among adult learners. Thus, the current study aims to conduct the preliminary tests of reliability and validity of the Children's Foreign Language Anxiety Scale (CFLAS) and to report on the pilot examination of reliability, validity and factor structure of the CFLAS. The findings of the pilot study show that CFLAS is a reliable and valid tool to measure FLA levels among children who learn English as a foreign language (EFL) within the age range of 7-12 in a Turkish EFL context

Kinaesthetic impulses : aesthetic experience, bodily knowledge, and pedagogical practices in Germany, 1871-1918

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Architecture, 2007.Includes bibliographical references (p. 239-276).This dissertation studies a moment of transition in German aesthetics in the late nineteenth century. Starting in the 1870s, groups of artists, architects, historians, critics, connoisseurs, and museum officials in Germany declared that traditional aesthetics, which had operated "from above" with metaphysical concepts such as the beautiful and the sublime, was obsolete. According to these intellectuals, the old aesthetics needed to be replaced by a scientific and empirical "aesthetics from below." The emergence of the new aesthetics was closely related to the rise of mass politics and mass culture in the newly unified Germany. Concerned that an attentive and contemplative perception could not be afforded by the masses, these liberal-minded members of the educated middle classes theorized a new kind of aesthetic experience that was based on corporeal pleasure rather than intellectual judgment. According to this model, an aesthetic encounter with an artwork was primarily kinaesthetic: an artwork elicited an unconscious and immediate effect on the musculature of its beholder. I examine three episodes, in which this idea was employed to pedagogical ends at the turn of the twentieth century. In the work of the artist Hermann Obrist (1862-1927), the kinaesthetic model of experience became the basis of a new pedagogy for the arts, which utilized the unconscious movements of the body to choreograph the production and reception of aesthetic effects. The architect August Endell (1871-1925) theorized these effects further and attempted to invent an exact science of design, which correlated architectural forms to the reaction that they would produce in the human body.(cont.) The same idea of kinaesthetic response appeared within art historical circles under the rubric of the Baroque at the turn of the twentieth century, particularly in the debates between Heinrich Wilfflin (1864-1945) and August Schmarsow (1853-1936) on the nature of the painterly (malerisch). The double slide lecture was an ingenious solution devised by the incipient discipline of modern art history simultaneously to utilize the pedagogical effectiveness of kinaesthetic experience and to control its sensual excess.by Zeynep Çelik.Ph.D

Properties of 42 Solar-type Kepler Targets from the Asteroseismic Modeling Portal

Recently the number of main-sequence and subgiant stars exhibiting solar-like oscillations that are resolved into individual mode frequencies has increased dramatically. While only a few such data sets were available for detailed modeling just a decade ago, the Kepler mission has produced suitable observations for hundreds of new targets. This rapid expansion in observational capacity has been accompanied by a shift in analysis and modeling strategies to yield uniform sets of derived stellar properties more quickly and easily. We use previously published asteroseismic and spectroscopic data sets to provide a uniform analysis of 42 solar-type Kepler targets from the Asteroseismic Modeling Portal (AMP). We find that fitting the individual frequencies typically doubles the precision of the asteroseismic radius, mass and age compared to grid-based modeling of the global oscillation properties, and improves the precision of the radius and mass by about a factor of three over empirical scaling relations. We demonstrate the utility of the derived properties with several applications.Comment: 12 emulateapj pages, 9 figures, 1 online-only extended figure, 1 table, ApJS accepted (typo corrected in Eq.8

Droplet Misalignment Limit for Inkjet Printing into Cavities on Textured Surfaces

The control of droplets deposited onto textured surfaces is of great importance for both engineering and medical applications. This research investigates the dynamics of a single droplet deposited into a confined space and its final equilibrium morphology, with emphasis given to droplet deposition under print head misalignment, the effect of nonuniform wettability, and deposition of droplets with varying sizes. A multiphase pseudopotential lattice Boltzmann methodology is used to simulate the process of deposition. The print quality is characterized in terms of a parameter referred to as the wetted fraction, which describes the proportion of the cavity that is wetted by the droplet. Our results show how single and multiple axis misalignment affect the final equilibrium morphology, and it was found for comparable configurations that multiaxis misalignment resulted in a higher wetted fraction. Investigations into wettabilities of the substrate and cavity wall revealed how larger ratios of the contact angles between the two enhance the ability for the droplet to self-align within the cavity. Additionally, a range of uniform wettabilities between the substrate and cavity were found, which mitigate against misalignment. Investigations into varying droplet sizes relative to the cavity revealed how misalignment can be compensated for with larger droplets, and limits for filling a cavity with a single drop are defined. Finally, we explore the deposition with misalignment into closely positioned cavities where it is found that the spacing between cavities is a key factor in determining the maximum permissible misalignment

Trace Anomaly and Quasi-Particles in Finite Temperature SU(N) Gauge Theory

We consider deconfined matter in SU(N) gauge theory as an ideal gas of transversely polarized quasi-particle modes having a temperature-dependent mass m(T). Just above the transition temperature, the mass is assumed to be determined by the critical behavior of the energy density and the screening length in the medium. At high temperature, it becomes proportional to T as the only remaining scale. The resulting (trace anomaly based) interaction measure Delta=(e - 3P)/T^4 and energy density are found to agree well with finite temperature SU(3) lattice calculations.Comment: 13 pages, 13 figures; references added for version