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Lucy decides to give a string she finds a tug and discovers a surprise, and possibly a new friend, at the other end.

In the current article, we discuss the wormhole geometries in two different gravity theories, namely F ( Q , T ) gravity and F ( R , T ) gravity. In these theories, Q is called a non-metricity scalar, R stands for the Ricci scalar, and T denotes the trace of the energy–momentum tensor (EMT). The main goal of this study is to comprehensively compare the properties of wormhole solutions within these two modified gravity frameworks by taking a particular shape function. The conducted analysis shows that the energy density is consistently positive for wormhole models in both gravity theories, while the radial pressure is positive for F ( Q , T ) gravity and negative in F ( R , T ) gravity. Furthermore, the tangential pressure shows reverse behavior in comparison to the radial pressure. By using the Tolman-Oppenheimer-Volkov (TOV) equation, the equilibrium aspect is also described, which indicates that hydrostatic force dominates anisotropic force in the case of F ( Q , T ) gravity theory, while the reverse situation occurs in F ( R , T ) gravity, i.e., anisotropic force dominates hydrostatic force. Moreover, using the concept of the exoticity parameter, we observed the presence of exotic matter at or near the throat in the case of F ( Q , T ) gravity while matter distribution is exotic near the throat but normal matter far from the throat in F ( R , T ) gravity case. In conclusion, precise wormhole models can be created with a potential NEC and DEC violation at the throat of both wormholes while having a positive energy density, i.e., ρ > 0 .

\"From the dawn chorus to an icy sunset, follow one girl and her dog as they adventure through spring, summer, autumn and winter in just one day.\"--Back cover.

A bstract In this work we analyse the potential for a warp drive spacetime to develop instabilities due to the presence of quantum matter. Particularly, we look for points of infinite blueshift (which are analogous to points of a black hole inner horizon, known for its semiclassical instability), and categorise them through the behaviour of geodesics in their vicinity. We find that warp-drive bubbles in dimension 2+1 or higher are in fact likely to be stable, as they generally contain only isolated points where divergences are approached, leading to a finite limit for the overall accumulation of destabilising energy. Furthermore, any semiclassical instabilities in the warp drive due to energy-density buildups can be further diminished with particular, more “aerodynamic” shapes and trajectories for the drive.

[...]we present a pair of articles which think through the politics and potentialities of Caribbean and black-diasporic sound. [...]Kezia Page reviews Leone Ross's collection Come Let Us Sing Anyway and Other Stories: twenty-three pieces of short fiction which focus on the lives of girls and women, offer an expansive mapping of the territory of the Caribbean and its diaspora, and constitute \"complete, heady meals that the reader will gobble up.\" [...]we thank Tessa Mars for permission to use her remarkable artwork, \"Conversation avec Hector H.,\" for our cover.

Gifted harpist Edna Phillips (1907-2003) joined the Philadelphia Orchestra in 1930, becoming not only that ensemble's first female member but also the first woman to hold a principal position in a major American orchestra. Plucked from the Curtis Institute of Music in the midst of her studies, Phillips was only twenty-three years old when Leopold Stokowski, one of the twentieth century's most innovative and controversial conductors, named her principal harpist. This candid, colorful account traces Phillips's journey through the competitive realm of Philadelphia's virtuoso players, where she survived--and thrived--thanks to her undeniable talent, determination, and lively humor._x000B__x000B_Drawing on extensive interviews with Phillips, her family, and colleagues as well as archival sources, One Woman in a Hundred chronicles the training, aspirations, setbacks, and successes of this pioneering woman musician. Mary Sue Welsh recounts numerous insider stories of rehearsal and performance with Stokowski and other renowned conductors of the period such as Arturo Toscanini, Fritz Reiner, Otto Klemperer, Sir Thomas Beecham, and Eugene Ormandy. She also depicts Phillips's interactions with fellow performers, the orchestra management, and her teacher, the wily and brilliant Carlos Salzedo. Blessed with a nimble wit, Phillips navigated a plethora of challenges, ranging from false conductors' cues to the advances of the debonair Stokowski and others. She remained with the orchestra through some of its most exciting years from 1930 to 1946 and was instrumental in fostering harp performance, commissioning many significant contributions to the literature. _x000B__x000B_This portrait of Phillips's exceptional tenure with the Philadelphia Orchestra also reveals the behind-the-scenes life of a famous orchestra during a period in which Rachmaninoff declared it \"the finest orchestra the world has ever heard.\" Through Phillips's perceptive eyes, readers will watch as Stokowski melds his musicians into a marvelously flexible ensemble; world-class performers reach great heights and make embarrassing flubs; Greta Garbo comes to Philadelphia to observe her lover Leopold Stokowski at work; and the orchestra encounters the novel experience of recording for Walt Disney's Fantasia. A colorful glimpse into a world-class orchestra at the height of its glory, One Woman in a Hundred tells the fascinating story of one woman brave enough and strong enough to overcome historic barriers and pursue her dreams._x000B_

This essay suggests that literary production post-postmodernism has not progressed to something new, but rather has returned to quintessentially modernist anxieties and modes of expression––especially renewed faith in grand narratives. The argument draws upon and coalesces two theoretical texts to help identify what I term ‘revenant modernism’ as a “symbolic space” (Flatley, 2008: 32) where a sort of “secular re-enchantment” (Landy & Saler, 2009: 2) remains possible: Jonathan Flatley’s Affective mapping: Melancholia and the politics of modernism (2008) and The re-enchantment of the world: Secular magic in a rational age (2009) by Joshua Landy and Michael Saler. I then examine two recent novels––Will Self’s Umbrella (2012) and Eimear McBride’s A girl is a half-formed thing (2014)––as evidence of this return. Along the way, I tie both of these novels back to their stated modernist influence (James Joyce’s Ulysses [1993]) in order to show how Self and McBride’s fiction borrows from Joyce’s particular brand of postcolonial modernism.

What we call science is the systematization of information obtained from nature. Nature has had its own laws from the beginning. Some of these laws are easy to express, while others stretch our understanding and even our sense of logic. Our efforts to understand nature and its workings, that is our production of scientific knowledge, will never end. We may never truly understand the workings of nature, or get close to the real truth. Therefore, it is ridiculous to behave as if we knew all of the workings of nature and to say “this is not scientific, it is in conflict with the (known) laws of science”. The clearest example of this is when we see the workings of quantum physics in biological structures. When nature is working, it does not know the laws of our science and doesn’t even take notice of them. Nature even sometimes winks at us with “anomalies”. We learn from nature but we cannot impose on nature the laws we have learned from it. What we call science is the systematization of information obtained from nature. Nature has had its own laws from the beginning. Some of these laws are easy to express, while others stretch our understanding and even our sense of logic. Our efforts to understand nature and its workings, that is our production of scientific knowledge, will never end. We may never truly understand the workings of nature, or get close to the real truth. Therefore, it is ridiculous to behave as if we knew all of the workings of nature and to say “this is not scientific; it is in conflict with the (known) laws of science”. The clearest example of this is when we see the workings of quantum physics in biological structures. When nature is working, it does not know the laws of our science and doesn’t even take notice of them. Nature even sometimes winks at us with “anomalies”. We learn from nature but we cannot impose on nature the laws we have learned from it. Each theory set out in this article has its own acceptable points and deficiencies. Whatever our beliefs, theoretical ideas must be supported, and proof derived from experiment must be taken into account, with proof being strengthened by the same experimental method. If necessary, we must be brave enough to rewrite the physics textbooks. When Copernicus provided the proof that Man was not at the centre of the universe, the feeling that people were not privileged but just normal beings created great disillusion. Therefore, adding consciousness as a part of the solution to the measurement problem in quantum mechanics, as part of the approach which places humans back in a privileged position at the centre of the universe, is in conflict with these principles. Quite the opposite, the observer or experimenter, who is in such a privileged position, has set himself up as separate from the rest of the universe (the experimental apparatus, or what is outside us). The paradox is that if it is proved that we are participants in the universe, we will lose our last bastion of privilege, our position as experimenter, observer, or watcher. Such a proof would be the biggest revolution after Copernicus, and Darwin’s theory of evolution. Entanglement and non-locality in quantum mechanics and the entwinement of light and gravity in physics are proven but difficult-to-believe realities. In contrast, scientific physics journals and their archives publish hundreds of experimentally unsupported and completely theoretical articles on subjects which look more like science fiction. Among these are the M-theory, D-brane, wormholes, string theory, tachyons, superluminal communication, and the theory of everything. These are thought by many physicists to be within the scope of physical science, or at least are not greeted with antagonism. Involving consciousness in the experimental apparatus and researching that relationship is no more unnecessary than physical research in those border areas. Another approach is that there is no necessity for people to be involved in quantum mechanics. Mathematical symbols denote the state vector or wave function, and there is no pace for metaphysics. The mathematical equations of quantum mechanics give us its measurements of potentiality, and potential measurements give potential results. That’s all there is, and the rest is metaphysics. The approach that if one-day humanity disappears, quantum mechanics will continue to operate its own laws is not scientific, but includes emotional attitudes. If equations are not a reflection of the physical world, we need to search for new equations. The operation of nature is not forced to conform to the laws of science, and moreover nature has never heard of science. Scientists have reduced the operation of nature to a simple form in order to understand it, and never produce scientific knowledge which reflects the actual truth. If nature under certain circumstances shows “abnormality” and ignores the laws which we have set up, we must be able to express that in scientific language. We cannot just bin an anomaly which has the potential to cause a revolution in our understanding of nature because it did not fit our scientific laws and equations, or because we could not find a valid law. The existence of the graviton and the neutrino has been unquestionably accepted: there is direct evidence of their existence, but they have never been directly detected. No one doubts the existence of the omega minus particle, which has been detected twice in 200000 experiments. Against this, even if cases of parapsychology are rare, they appear much more frequently than the omega minus particle. In medicine, presentations of one-in-a-million cases are frequently made. However much a case with exceptional characteristics shows extreme deviation from the normal, it will be used to add to scientific knowledge. There are many cases which show that the consciousness or mind which is imprisoned inside the skull can in certain situations extend outside and stretch the limitations of space-time. It is wrong to say that if an illusionist can reproduce or copy the skills of ordinary or extraordinary people he is performing a fraudulent trick. If it is shown in even one of these samples that consciousness and the mind can extend beyond the skull or the limitations of space-time, this must be taken as a revolutionary finding. Such examples have appeared in the past and are appearing today. We must take these anomalies into account and try to understand the underlying mechanism. The main field of interest of parapsychology is the existence or non-existence of psi, and research into whether consciousness, personality, memory and recall continue to exist after death. Psi can be divided into two groups, receiver psi and transmitter psi. Receiver psi is defined by extrasensory perception, brain-to brain perception (telepathy), remote viewing, clairvoyance, and transmitter psi by the effect of mind on material in the outside world (psychokinesis). Psi phenomena can also be grouped in another way, by their relationships in time and space. On the temporal dimension, there are people who exhibit the skill of psychometry, or the ability to access the experiences of an object from the past, and there are records of the skills of many of those people. Also, thousands of cases have been recorded of reincarnation, or when the continuing memory of someone who lived in the past and who has died has been accessed. If the reincarnation cases do not demonstrate rebirth after death, then at least it has been hinted that the continuing memory of someone who has died has been transferred to a newly-born child. Even this hint is beyond the known perception of space-time, and must be taken into account. Even though science dies not believe in these cases, the truth of some of them has been proved. Science must at least ask this question: what happens to our consciousness, or memory and our personality when we die? There have been many cases and scientific studies demonstrating the existence of memory of things which have yet happened, or precognition, premonition and presentiment. Looking at the spatial aspect, a classification can be made into brain-to-brain contact (telepathy) and remote viewing. In addition to these, near-death experiences and out-of-body experiences can be counted among time-space anomalies. Apart from the brain’s extrasensory perception, the effect of consciousness or the mind on the outside world may be shown in various ways. All these topics, rather than being taken separately, must be taken as anomalies where mind/consciousness has overflowed the limits of space-time, and must be examined in one big unified theory. The main objective of science must be to investigate unexplained real or conjectural human skills in an unbiased and unprejudiced way, in a scientific spirit, an in the light of generally accepted scientific hypotheses. In the past 20 years, the attitude of “solid” physics and science to the results of studies of mind-over-matter effects and extrasensory perception has been to ignore them or to show contempt. Those who were better intentioned have found the methods of the studies to be wrong or biased, that the results were wrongly evaluated or that they were not sufficiently statistically significant. It went so far that it was even suggested that the p-value limit, the statistically significant 95% safety margin, should be changed in studies of mind and matter. When the use of eight tons a year of aspirin in the world is recommended to prevent heart attacks on the basis of this p-value, the same statistical effect is seen as insufficient in the case of research into mind-over-matter. This is a reflection of fear of a belief change. Can narrowing the gap between statistical values render meaningless the anomalous cases as they appear one by one? Your friend says he has a pig and that it can talk. You go to his house and the pig really can talk. In this situation, are you going to say you have to calculate the p-value

This thesis is centered around the study of geometric aspects of string theory and supergravity. We will focus on N = 2, D= 4 supergravity theories in arbitrary spacetime signature. We will obtain these supergravity theories as Calabi-Yau compactifications of Hull’s exotic Type II theories. In ten dimensions these theories are related to each other via T-duality and S-duality. We will obtain the four dimensional duality web of theories as a projection of the ten-dimensional one. Moreover the T-duality relations between theories define maps, from the vectormultiplet geometries to the hypermultiplet geometries, called c-maps, which will be characterized and classified.We will then turn to the study of solutions of such theories. We will be interested in non-extremal black hole and cosmological solutions exhibiting planar symmetry. Such solutions will be T-dualized and we will interpret their behavior once embedded in string theory.

After catastrophic spring flooding throughout North America, 312 tornadoes in the southcentral United States in a seventy-two-hour period in April, a historically unprecedented summer drought in Texas, and a tropical hurricane in late August that devastates infrastructures in the state of Vermont and floods downtown Paterson, New Jersey, with fourteen feet of water, a candidate for U.S. president publicly states that climate change is undocumented science. Built partially on a decade of research tracking the post-World War II transformation of biology's key matters into militarized command- communication- control and information systems (1994, 243), Haraway s worldly cyborg in 1985 stages a feminist historical materialist re-visioning of how social relations of science and technology complexly matter within a networked series of local/ global transformations that the essay maps with extraordinary intellectual ambition and acuity.