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"Stark, A. A."
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The life cycle of a CEO : the myths and truths of how leaders succeed
\"Claudius Hildebrand and Robert Stark, two key figures at Spencer Stuart, the world's most influential executive search firm, combine unprecedented research-analyzing the individual performance of every twenty-first century CEO of the S&P 500 and accompanying macroeconomic and industry cycles - with 100 in-depth interviews to reveal the distinctive life cycle of a CEO. These life cycles are predictable passages of headwinds and tailwinds that leaders must face at each stage of their tenure, from the day they walk through the door till the day they walk out. Hildebrand and Stark reveal how successful CEOs navigate these cycles by developing fresh skills and strategies needed for each distinct passage. As captains of organizations crucial to the economic foundation of our society, CEOs have a critical role to play. But our understanding of why some drive phenomenal innovation and growth and others quickly falter is clouded by myths and caricatures perpetrated by the media, Wall Street, political and social commentators: The bewildered rookie; the rock star who can do no wrong; the corporate savior, parachuting in to restore former glory; the treacherous villain out to destroy the planet or exploit people. Hildebrand and Stark break through these myths and provide insight into how those who thrive push themselves to evolve and master skills for meeting the challenges their companies face, and how they navigate the inevitable personal and organizational crises of corporate life as performance waxes and wanes. This invaluable roadmap for personal growth yields insight needed for navigating crises such as: criticism by stakeholders; when leaders are at the greatest risk of stagnation and firing; and when aversion to risk is likely to turn into a weakness. It provides the foundation for both rookies and seasoned leaders to gain self-insight and self-confidence and unlock both higher individual and corporate performance\".
BOOK
Fast molecular outflow from a dusty star-forming galaxy in the early Universe
Galaxies grow by forming stars from cold molecular gas. The rate at which they do so is limited by various feedback processes (such as supernovae or stellar winds) that heat and/or eject gas from the host galaxy. Spilker et al. used submillimeter observations to discover an outflow of molecular gas from a galaxy in the early Universe, a period of vigorous star formation. Modeling the outflow revealed that the mass of gas being ejected is similar to that being turned into stars. The results will help determine how quickly galaxies formed after the Big Bang. Science , this issue p. 1016 A galaxy in the early Universe is driving an outflow of molecular gas, a sign of feedback regulating star formation. Galaxies grow inefficiently, with only a small percentage of the available gas converted into stars each free-fall time. Feedback processes, such as outflowing winds driven by radiation pressure, supernovae, or supermassive black hole accretion, can act to halt star formation if they heat or expel the gas supply. We report a molecular outflow launched from a dust-rich star-forming galaxy at redshift 5.3, 1 billion years after the Big Bang. The outflow reaches velocities up to 800 kilometers per second relative to the galaxy, is resolved into multiple clumps, and carries mass at a rate within a factor of 2 of the star formation rate. Our results show that molecular outflows can remove a large fraction of the gas available for star formation from galaxies at high redshift.
Journal Article
عندما لا تكون بخير
يعلمك هذا الكتاب، كيف تستريح قليلا عندما تبدو الأمور محطمة. ولكنه لا يعلمك «أن تبقى إيجابيا»، أو يقترح عليك أن تصر أسنانك، وتفتعل ابتسامة عريضة، وتردد تأكيدات : \"أنا قوي، أنا سعيد\" أمام المرآة حتى يصدق عقلك ذلك. هناك مكان مخصص في الجحيم لمروجي سخافات العناية الذاتية، و\"إلهام الصحة النفسية\" التي تتناقض مع الواقع، وتقتات على قلة ثقتنا بأنفسنا، لن تجد ذلك في كتابي، ولكني سأشارككم الأشياء التي ساعدتني في الأوقات العصيبة التي يبلغ فيها قلقي ذروته. أشارككم كل هذا ؛ لأني مررت بذلك من قبل، بل مررت بذلك كثيرا حتى بدأت بالتفكير : \"يمكنني أن أؤلف كتابا عن هذا الموضوع\"، وهذا ما فعلت. يجب أن أؤكد أنني لست بطبيبة، أو إخصائية علم نفس، كما أنني لست بمستشارة صحية، أو معلمة روحية، أو مدربة حياة. ولا يعد هذا الكتاب دليلا توجيهيا، أو بديلا للعلاج المهني، أو الطبي. ولكني شخص يعرف معنى أن تمر بوقت تقاتل خلال كل لحظاته. كما أني شخص يملك عقلا يكذب عليه باستمرار ! أعلم أنه لا يوجد منهجا واحدا صالحا للجميع فيما يتعلق بالصحة النفسية الجيدة، كما أنه لا يوجد حل سريع، أو وصفة سرية. جميعنا مميزون ومعقدون، والطريقة التي تنجح معي قد لا تنجح معك بنسبة 100 بالمئة. ولكني آمل أن يكون في هذا الكتاب ما يصلح للجميع، وأنك ستجد الكلمات التي تناسبك، والطريقة التي تتفاعل فيها مع الحياة.
Book
Influences on students’ empathy in medical education: an exploratory interview study with medical students in their third and last year
Background
Empathy is beneficial for patients and physicians. It facilitates treatment and improves physical and psychosocial outcomes. The therapeutic relevance of empathy emphasizes the need to help medical students develop their empathic abilities. Our study aimed to identify factors which promote or hinder the development and expression of empathy in medical students during the course of their studies.
Methods
We interviewed 24 medical students (six male and six female students in their 6th semester as well as six male and six female students in their final clinical year) using semi-structured interviews. The interviews were recorded, transcribed verbatim and analyzed using Braun & Clarke’s thematic analysis.
Results
We identified four main themes influencing the development and expression of empathy. 1) Course of studies: hands-on-experience, role models, science and theory, and emphasis on the importance of empathy; 2) students: insecurities and lack of routine, increasing professionalism, previous work experiences, professional distance, mood, maturity, and personal level of empathy; 3) patients: “easy” and “difficult” patients including their state of health; and 4) surrounding conditions: time pressure/stress, work environment, and job dissatisfaction.
Conclusions
The development and use of empathy could be promoted by increasing: hands-on-experiences, possibilities to experience the patient’s point of view and offering patient contact early in the curriculum. Students need support in reflecting on their actions, behavior and experiences with patients. Instructors need time and opportunities to reflect on their own communication with and treatment of patients, on their teaching behavior, and on their function as role models for treating patients empathically and preventing stress. Practical experiences should be made less stressful for students. The current changes implemented in some medical school curriculums (e.g., in Germany) seem to go in the right direction by integrating patient contact early on in the curriculum and focusing more on teaching adequate communication and interaction behaviors.
Journal Article
A rocky planet transiting a nearby low-mass star
A low-mass star that is just 12 parsecs away from Earth is shown to be transited by an Earth-sized planet, GJ 1132b, which probably has a rock/iron composition and might support a substantial atmosphere.
GJ1132b — a nearby rocky, Earth-sized planet
Zachory Berta-Thompson
et al
. report observations of GJ 1132b, a 1.2 Earth radius planet transiting a small star only 12 parsecs away. The Doppler mass measurement of GJ 1132b yields a density consistent with an Earth-like rock/iron composition. The planet is too hot to be habitable but is cool enough to support a substantial atmosphere. Because the host star is nearby, existing and upcoming telescopes will be able to observe the composition and dynamics of the planetary atmosphere.
M-dwarf stars—hydrogen-burning stars that are smaller than 60 per cent of the size of the Sun—are the most common class of star in our Galaxy and outnumber Sun-like stars by a ratio of 12:1. Recent results have shown that M dwarfs host Earth-sized planets in great numbers
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: the average number of M-dwarf planets that are between 0.5 to 1.5 times the size of Earth is at least 1.4 per star
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. The nearest such planets known to transit their star are 39 parsecs away
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, too distant for detailed follow-up observations to measure the planetary masses or to study their atmospheres. Here we report observations of GJ 1132b, a planet with a size of 1.2 Earth radii that is transiting a small star 12 parsecs away. Our Doppler mass measurement of GJ 1132b yields a density consistent with an Earth-like bulk composition, similar to the compositions of the six known exoplanets with masses less than six times that of the Earth and precisely measured densities
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. Receiving 19 times more stellar radiation than the Earth, the planet is too hot to be habitable but is cool enough to support a substantial atmosphere, one that has probably been considerably depleted of hydrogen. Because the host star is nearby and only 21 per cent the radius of the Sun, existing and upcoming telescopes will be able to observe the composition and dynamics of the planetary atmosphere.
Journal Article
Gómez-Peña unplugged : texts on live art, social practice and imaginary activism (2008-2019)
\"Gómez-Peña Unplugged is an anthology of recent writings from Guillermo Gómez-Peña, a figure who stands alone as unique and ground-breaking in the history of performance art, and as the Artistic Director of transdisciplinary performance troupe La Pocha Nostra. Throughout this collection, Gómez-Peña tackles literature, theory, pedagogy, activism and live art in an eclectic mix that demonstrates how the process of writing is simultaneously a performative exercise in embodied language. The writing stands as a call for action utilizing what Gómez-Peña terms 'imaginary activism' and 'radical citizenship'; it invites the reader to embody a borderless, polygendered, cross generational and race literate ethos. This timely anthology comes straight from the heart of a troubled Trump-era United States and a crime cartel ridden Mexico. Artists are prompted to engage in radical performance pedagogy within the civic realm and to think of themselves as 'artivists' participating in the great debates of our times. By encouraging artists and emerging writers to wildly imagine their practice beyond the normative art world and academia, this book is a unique read for scholars and students of political theatre, performance art, cultural performance, literature, poetry and activism\"-- Provided by publisher.
BOOK
In situ high temperature X-ray diffraction and dilatometric analysis of CGO–Cu composites for solid oxide devices
Understanding the thermo-mechanical compatibility of composite electrodes is essential for the long-term reliability of solid-oxide electrochemical devices. In this study, we demonstrate a combined in situ synchrotron X-ray diffraction (XRD) and simultaneous dilatometry approach as a rapid and predictive method to quantify both phase-resolved and bulk thermal expansion while tracking microstructural evolution at operational temperatures. Ce
0.8
Gd
0.2
O
2−δ
–Cu (CGO–Cu) composites with varying CGO: Cu ratios (39:61–70:30 vol%) were synthesized as potential anode materials compatible with CGO electrolytes up to 800 °C. In situ XRD confirmed only the CGO and Cu phases, with Rietveld refinement revealing a slight lattice expansion and reduced CGO crystallite size with increasing CGO content. Concurrent dilatometry indicated systematic changes in the macroscopic thermal expansion and densification behavior, which correlated with the phase and microstructural evolution observed during heating. The CGO–Cu (59:41) composite exhibited a nearly temperature-independent coefficient of thermal expansion consistent with the rule-of-mixtures predictions and minimal high-temperature shrinkage. These findings validate the combined in situ synchrotron XRD + dilatometry methodology as a powerful approach for characterizing and capturing the TEC characteristics of cermets, and for guiding the design of thermomechanically compatible oxide-metal composites for high temperature electrochemical applications.
Journal Article
Constitutive ALS3 expression in Candida albicans enhances adhesion and biofilm formation of efg1, but not cph1 mutant strains
Adhesion to living and non-living surfaces is an important virulence trait of the fungal pathogen Candida albicans . Biofilm formation in this organism depends on the expression of a number of cell surface proteins including the hypha-specific protein Als3p. Loss of ALS3 impairs biofilm formation and decreases cell-cell adhesion. We wanted to test whether constitutively expressing ALS3 could compensate for defects in adhesion and biofilm formation observed in mutant strains that lack key transcriptional regulators of biofilm formation Efg1p and Cph1p. We found that ALS3 improved adhesion and biofilm formation in the efg1 Δ and efg1 Δ cph1 Δ mutant strains, but had less effect on the cph1 Δ strain.
Journal Article
Galaxy growth in a massive halo in the first billion years of cosmic history
Two extremely massive galaxies are seen 800 million years after the Big Bang, showing the rapid growth of early structure and marking the most massive halo known in that era.
A massive galaxy in the early Universe
The most massive galaxies in the early Universe were very rare objects and observing them during their growing stage is a challenge. Daniel Marrone and collaborators report observations of one of them less than 800 million years after the Universe began, which high-resolution imaging reveals to in fact be a closely interacting pair of galaxies. The larger one is forming stars at a rate of 2,900 solar masses per year, and contains 270 billion solar masses of gas. The rapid star formation was probably triggered by the interaction with its close companion, whose properties are closer to those of galaxies observed in the nearby Universe.
According to the current understanding of cosmic structure formation, the precursors of the most massive structures in the Universe began to form shortly after the Big Bang, in regions corresponding to the largest fluctuations in the cosmic density field
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. Observing these structures during their period of active growth and assembly—the first few hundred million years of the Universe—is challenging because it requires surveys that are sensitive enough to detect the distant galaxies that act as signposts for these structures and wide enough to capture the rarest objects. As a result, very few such objects have been detected so far
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,
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. Here we report observations of a far-infrared-luminous object at redshift 6.900 (less than 800 million years after the Big Bang) that was discovered in a wide-field survey
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. High-resolution imaging shows it to be a pair of extremely massive star-forming galaxies. The larger is forming stars at a rate of 2,900 solar masses per year, contains 270 billion solar masses of gas and 2.5 billion solar masses of dust, and is more massive than any other known object at a redshift of more than 6. Its rapid star formation is probably triggered by its companion galaxy at a projected separation of 8 kiloparsecs. This merging companion hosts 35 billion solar masses of stars and has a star-formation rate of 540 solar masses per year, but has an order of magnitude less gas and dust than its neighbour and physical conditions akin to those observed in lower-metallicity galaxies in the nearby Universe
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. These objects suggest the presence of a dark-matter halo with a mass of more than 100 billion solar masses, making it among the rarest dark-matter haloes that should exist in the Universe at this epoch.
Journal Article