189 results on '"McCollam, A."'
Search Results
2. Electromagnetic energy transport by tearing fluctuations in a self-organized reversed-field pinch plasma.
- Author
-
Thuecks, Derek J. and McCollam, Karsten J.
- Subjects
- *
PINCH effect (Physics) , *ELECTROMAGNETIC waves , *POYNTING theorem , *MAGNETIC relaxation , *ELECTROMOTIVE force , *FLUCTUATIONS (Physics) - Abstract
Fluctuation measurements reveal the outward electromagnetic energy flux needed to drive the dynamo electromotive force supporting magnetic self-organization in a reversed-field pinch plasma. The radial Poynting flux due to tearing mode fluctuations is measured with an insertable probe during magnetic relaxation. This flux corresponds to transient power levels much larger than the input power and comparable to the global equilibrium magnetic energy transient loss rate. The probe measurements of this flux are roughly as predicted by a simple Poynting's theorem model upon substitution of equilibrium measurement data. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
3. An in silico model of LINE-1-mediated neoplastic evolution.
- Author
-
LeBien, Jack, McCollam, Gerald, and Atallah, Joel
- Subjects
- *
TUMOR suppressor genes , *POPULATION dynamics , *SOURCE code , *CANCER invasiveness , *HUMAN genes , *SOMATIC mutation - Abstract
Motivation Recent research has uncovered roles for transposable elements (TEs) in multiple evolutionary processes, ranging from somatic evolution in cancer to putatively adaptive germline evolution across species. Most models of TE population dynamics, however, have not incorporated actual genome sequence data. The effect of site integration preferences of specific TEs on evolutionary outcomes and the effects of different selection regimes on TE dynamics in a specific genome are unknown. We present a stochastic model of LINE-1 (L1) transposition in human cancer. This system was chosen because the transposition of L1 elements is well understood, the population dynamics of cancer tumors has been modeled extensively, and the role of L1 elements in cancer progression has garnered interest in recent years. Results Our model predicts that L1 retrotransposition (RT) can play either advantageous or deleterious roles in tumor progression, depending on the initial lesion size, L1 insertion rate and tumor driver genes. Small changes in the RT rate or set of driver tumor-suppressor genes (TSGs) were observed to alter the dynamics of tumorigenesis. We found high variation in the density of L1 target sites across human protein-coding genes. We also present an analysis, across three cancer types, of the frequency of homozygous TSG disruption in wild-type hosts compared to those with an inherited driver allele. Availability and implementation Source code is available at https://github.com/atallah-lab/neoplastic-evolution. Contact jlebien@uno.edu Supplementary information Supplementary data are available at Bioinformatics online. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
4. Preventing Chemotherapy-Induced Infertility in Female Patients.
- Author
-
McCollam, Shiela, Shipman, Colleen, Bubalo, Joseph, and Krieg, Sacha
- Subjects
- *
FERTILITY preservation , *PREMATURE menopause , *FEMALE infertility , *WOMEN patients , *CANCER chemotherapy , *INDUCED ovulation , *FERTILIZATION in vitro - Published
- 2019
5. Early internal detection of magnetic tearing and implications for tokamak magnetohydrodynamic stability.
- Author
-
Pandya, M. D., Chapman, B. E., McCollam, K. J., Myers, R. A., Sarff, J. S., Victor, B. S., Brennan, D. P., Brower, D. L., Chen, J., Ding, W. X., Holcomb, C. T., Logan, N. C., and Strait, E. J.
- Abstract
Internal fluctuation measurements with Faraday-effect polarimetry in the DIII-D tokamak reveal the onset of a tearing mode with toroidal mode number n = 3 well before it is detected by the sensing coils external to the plasma. This mode appears before the n = 2, 1 modes and is first detected with internal measurements at a lower value of the ideal-wall kink beta limit than is indicated at the time of first detection by the sensing coils. When the mode is first detected, the linear resistive stability parameter, Δ ′ , indicates marginal stability and continues to do so until later when the mode amplitude begins increasing linearly with time—together suggesting a neoclassical origin for this mode. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
6. Soot formation in diffusion oxygen-enhanced biodiesel flames.
- Author
-
Merchan-Merchan, Wilson, McCollam, Stephen, and Pugliese, Juan Felipe Correa
- Subjects
- *
DIFFUSION , *BIODIESEL fuels , *FLAME , *METHYL formate , *MIXTURES , *AIR flow - Abstract
The focus of this work is the experimental investigation of soot formation in coflow flames formed of two fatty acid methyl esters (FAMEs) by employing the light extinction/scattering technique. Three different sets of experiments were conducted in this study. In the first set, radial soot volume fraction ( f v ) profiles of flames of vaporized neat canola methyl ester (B100CME) and neat soy methyl ester (B100SME) fuels both using air as the oxidizer were obtained. In the second set of experiments, the effect of oxygen content in the oxidizer stream on soot formation was studied in both FAME formed flames by increasing the oxygen content in the oxidizer stream from 21% to 35%, 50% and 80%. In the third set of experiments, the effect of fuel blending on the formation of soot particulates was studied in flames formed using CME blended with No. 2 diesel. The blends consisted of 80% biodiesel/20% diesel (B80) and 50% biodiesel/50% diesel (B50). The flames were scanned in the radial direction at various heights above the burner (HAB). For the B100CME-air flame the measured soot volume fraction f v peak was 4.04 ppm and was located at the symmetry axis at a HAB of 16.25 mm. For B100SME-air, the f v peak was measured to be 4.22 ppm at approximately the same flame height as in the CME-air flame. For the B100CME oxygen enriched-air flames the peak values at 35%, 50% and 80% were 6.50, 5.82 and 3.22 ppm, respectively. It was observed that by increasing the oxygen content in the B100CME flame from 21% to 35% oxygen, the f v peak increases by approximately 61%. However, a further increase in oxygen content in the oxidizer stream suppressed soot formation. A similar trend in the f v was observed for B100SME oxygen-enhanced flames. Furthermore, the increase of diesel fuel in the blending of B50CME resulted in significantly higher f v values compared to the B80CME. The addition of oxygen content in the oxidizer stream in these blended fuel flames (from air to 35%) resulted in an increase in the f v peak of approximately 47% and 71%, respectively. Centerline temperatures were measured at various HAB for selected flames. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
7. Thermally excited multiband conduction in LaAlO3/SrTiO3 heterostructures exhibiting magnetic scattering.
- Author
-
Guduru, V. K., McCollam, A., Jost, A., Wenderich, S., Hilgenkamp, H., Maan, J. C., Brinkman, A., and Zeitler, U.
- Subjects
- *
HETEROSTRUCTURES , *SUPERLATTICES , *MAGNETORESISTANCE , *HIGH temperatures , *ELECTRIC resistance - Abstract
Magnetotransport measurements of charge carriers at the interface of a LaA1O3/SrTiO3 heterostructure with 26 unit cells of LaAlO3 show Hall resistance and magnetoresistance which at low and high temperatures is described by a single channel of electronlike charge carriers. At intermediate temperatures, we observe nonlinear Hall resistance and positive magnetoresistance, establishing the presence of at least two electronlike channels with significantly different mobilities and carrier concentrations. These channels are separated by 6 meV in energy and their temperature-dependent occupation and mobilities are responsible for the observed transport properties of the interface. We observe that one of the channels has a mobility that decreases with decreasing temperature, consistent with magnetic scattering in this channel. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
8. Fermi volume as a probe of hidden order.
- Author
-
McCollam, A., Andraka, B., and Julian, S. R.
- Subjects
- *
INTERMETALLIC compounds , *PRASEODYMIUM , *FERMI surfaces , *FERMIONS , *DE Haas-van Alphen effect , *HYPERFINE coupling - Abstract
We demonstrate that the volume of the Fermi surface, measured very precisely using de Haas-van Alphen oscillations, can be used to probe changes in the nature and occupancy of localized electronic states. In systems with unconventional ordered states, this allows an underlying electronic order parameter to be followed to very low temperatures. We describe this effect in the field-induced antiferroquadrupolar (AFQ) ordered phase of PrOs4Sb12, a heavy fermion intermetallic compound. We find that the phase of de Haas-van Alphen oscillations is sensitively coupled, through the Fermi volume, to the configuration of the Pr f-electron states that are responsible for AFQ order. In particular, the β sheet of the Fermi surface expands or shrinks as the occupancy of two competing localized Pr crystal field states changes. Our results are in good agreement with previous measurements, above 300 mK, of the AFQ order parameter by other methods. In addition, the low-temperature sensitivity of our measurement technique reveals a strong and previously unrecognized influence of hyperfine coupling on the order parameter below 300 mK within the AFQ phase. Such hyperfine couplings could provide insight into the nature of hidden order states in other systems. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
9. Hall coefficient anomaly in the low-temperature high-field phase of Sr3Ru207.
- Author
-
Borzi, R. A., McCollam, A., Bruin, A. N., Perry, S., Mackenzie, A. P., and Grigera, S. A.
- Subjects
- *
HALL effect , *SINGLE crystals , *ANISOTROPY , *LOW temperatures , *ELECTRICAL resistivity - Abstract
We report a study of the Hall effect of high-purity Sr3Ru2O7 single crystals. We establish an empirical correlation between the onset of its unusual low-temperature, high-field phase and a pronounced dip in the field-dependent Hall coefficient. Unlike the order parameter obtained from measurements of anisotropic resistivity, which is affected by the formation of domains, the Hall effect feature seems to reflect the nature of the ordering within a single domain. We checked for violations of the Onsager relations for the off-diagonal components of the resistivity tensor but do not detect any. We compare our observations to those on materials that have long-wavelength spin structures, and discuss them in relation to a growing body of theoretical work on the nature of the low-temperature phase in Sr3Ru2O7. [ABSTRACT FROM AUTHOR]
- Published
- 2011
- Full Text
- View/download PDF
10. High sensitivity magnetometer for measuring the isotropic and anisotropic magnetisation of small samples.
- Author
-
McCollam, A., van Rhee, P. G., Rook, J., Kampert, E., Zeitler, U., and Maan, J. C.
- Subjects
- *
SENSITIVITY analysis , *MAGNETOMETERS , *ANISOTROPY , *MAGNETIZATION , *PIEZOELECTRICITY , *FERROMAGNETIC materials , *FORCE & energy , *TORQUE , *TEMPERATURE effect - Abstract
We describe how the full, isotropic and anisotropic, magnetisation of samples as small as tens of micrometers in size can be sensitively measured using a piezoresistive microcantilever and a small, moveable ferromagnet. Depending on the position of the ferromagnet, a strong but highly local field gradient of up to ∼4200 T/m can be applied at the sample or removed completely during a single measurement. In this way, the magnetic force and torque on the sample can be independently determined without moving the sample or cycling the experimental system. The technique can be used from millikelvin temperatures to ∼85 K and in magnetic fields from 2 T to the highest fields available. We demonstrate its application in measurements of the semimagnetic semiconductor Hg1 - xFexSe, where we achieved a moment sensitivity of better than 2.5 × 10-14 J/T for both isotropic and anisotropic components. [ABSTRACT FROM AUTHOR]
- Published
- 2011
- Full Text
- View/download PDF
11. Fruitful plans: Adding targeted mental imagery to implementation intentions increases fruit consumption.
- Author
-
Knäuper, Bärbel, McCollam, Amanda, Rosen-Brown, Ariel, Lacaille, Julien, Kelso, Evan, and Roseman, Michelle
- Subjects
- *
ANALYSIS of variance , *COLLEGE students , *DIET , *EXPERIMENTAL design , *FRUIT , *GOAL (Psychology) , *HEALTH behavior , *HUMAN information processing , *INTENTION , *STATISTICS , *PLANNED behavior theory - Abstract
Forming implementation intentions ('If I encounter situation X, then I will perform behaviour Y!') increases the probability of carrying out goals. This study tested the hypothesis that mental imagery targeting key elements of implementation intentions further increases goal achievement. The residents of a student residence were assigned the goal of consuming extra portions of fruit every day for 7 days and randomly assigned to one of four conditions: control (active rehearsal), implementation intentions, goal intention mental imagery or mental imagery targeted to the implementation intentions. Among low fruit consumers, but not high fruit consumers, fruit consumption at follow-up was higher in the targeted mental imagery group than in the other group, with the lowest fruit consumption in the control group. The findings suggest that it may be beneficial to use targeted mental imagery when forming implementation intentions. [ABSTRACT FROM AUTHOR]
- Published
- 2011
- Full Text
- View/download PDF
12. Quantum critical metamagnetism of Sr3Ru2O7 under hydrostatic pressure.
- Author
-
Wu, W., McCollam, A., Grigera, S. A., Perry, R. S., Mackenzie, A. P., and Julian, S. R.
- Subjects
- *
QUANTUM efficiency , *HYDROSTATIC pressure , *MAGNETIZATION , *DENSITY , *CONDENSED matter - Abstract
Using ac susceptibility, we have determined the pressure dependence of the metamagnetic critical endpoint temperature T* for a field applied in the ab plane in the itinerant metamagnet Sr3Ru2O7. We find that T* falls monotonically to zero as pressure increases, producing a quantum critical endpoint (QCEP) at Pc~13.6±0.2 kbar. New features are observed near the QCEP-the slope of T* versus pressure changes at ~12.8 kbar, and weak subsidiary maxima appear on either side of the main susceptibility peak at pressures near Pc-indicating that some new physics comes into play near the QCEP. Clear signatures of a nematic phase, however, that were seen in field-angle tuning of T* are not observed. As T* is suppressed by pressure, the metamagnetic peak in the susceptibility remains sharp as a function of an applied magnetic field. As a function of temperature, however, the peak becomes broad with only a very weak maximum, suggesting that, near the QCEP, the uniform magnetization density is not the order parameter for the metamagnetic transition. [ABSTRACT FROM AUTHOR]
- Published
- 2011
- Full Text
- View/download PDF
13. Equilibrium evolution in oscillating-field current-drive experiments.
- Author
-
McCollam, K. J., Anderson, J. K., Blair, A. P., Craig, D., Den Hartog, D. J., Ebrahimi, F., O'Connell, R., Reusch, J. A., Sarff, J. S., Stephens, H. D., Stone, D. R., Brower, D. L., Deng, B. H., and Ding, W. X.
- Subjects
- *
PLASMA gases , *HELICITY of nuclear particles , *MAGNETIC fields , *PINCH effect (Physics) , *ELECTRIC currents - Abstract
Oscillating-field current drive (OFCD) is a proposed method of steady-state toroidal plasma sustainment in which ac poloidal and toroidal loop voltages are applied to produce a dc plasma current. OFCD is added to standard, inductively sustained reversed-field pinch plasmas in the Madison Symmetric Torus [R. N. Dexter et al., Fusion Technol. 19, 131 (1991)]. Equilibrium profiles and fluctuations during a single cycle are measured and analyzed for different relative phases between the two OFCD voltages and for OFCD off. For OFCD phases leading to the most added plasma current, the measured energy confinement is slightly better than that for OFCD off. By contrast, the phase of the maximum OFCD helicity-injection rate also has the maximum decay rate, which is ascribed to transport losses during discrete magnetic-fluctuation events induced by OFCD. Resistive-magnetohydrodynamic simulations of the experiments reproduce the observed phase dependence of the added current. [ABSTRACT FROM AUTHOR]
- Published
- 2010
- Full Text
- View/download PDF
14. de Haas van Alphen effect in heavy fermion compounds—effective mass and non-Fermi-liquid behaviour
- Author
-
McCollam, A., Xia, J.-S., Flouquet, J., Aoki, D., and Julian, S.R.
- Subjects
- *
FERMIONS , *TEMPERATURE , *QUANTUM statistics , *PHYSICS - Abstract
Abstract: One reason the de Haas van Alphen (dHvA) effect plays a central role in heavy fermion physics is that the temperature dependence of quantum oscillations can be used to measure effective masses on a Fermi surface specific basis. We present a simple picture of the physics behind this temperature dependence, and discuss the observation of non-Fermi-liquid properties at low millikelvin temperatures via the dHvA effect. [Copyright &y& Elsevier]
- Published
- 2008
- Full Text
- View/download PDF
15. Spin-dependent masses and field-induced quantum critical points
- Author
-
McCollam, A., Daou, R., Julian, S.R., Bergemann, C., Flouquet, J., and Aoki, D.
- Subjects
- *
CRITICAL point (Thermodynamics) , *FERMIONS , *PARTICLES (Nuclear physics) , *QUANTUM statistics , *MAGNETS , *THERMODYNAMICS - Abstract
Abstract: We discuss spin-dependent mass enhancements associated with field-induced quantum critical points in heavy-fermion systems. We have recently observed this phenomenon on a branch of the Fermi surface of above its metamagnetic transition, complementing earlier work. In , at high fields above a field-induced quantum critical point, we see a strong spin-dependence of the effective mass on the thermodynamically dominant sheets of the Fermi surface. These observations reinforce the suggestion that ‘missing mass’ in some cerium-based heavy-fermion systems will be found on heavy spin-polarised branches of the Fermi surface. In all cases where this phenomenon is observed the linear coefficient of specific heat is field dependent; however, seems to be the first such heavy-fermion system in which the f-electrons are definitely contributing to the Fermi volume, which puts it beyond the existing theory intended for metamagnetic systems. [Copyright &y& Elsevier]
- Published
- 2005
- Full Text
- View/download PDF
16. Cost and effectiveness of glycoprotein IIb/IIIa-receptor inhibitors in patients with acute myocardial infarction undergoing percutaneous coronary intervention.
- Author
-
McCollam, Patrick L., Foster, David A., and Riesmeyer, Jeffrey S.
- Subjects
- *
MYOCARDIAL infarction , *GLYCOPROTEINS - Abstract
Studies outcomes in patients with acute myocardial infarction who received adjunctive therapy with glycoprotein IIb/IIIa-receptor inhibitors during percutaneous coronary intervention. Potential of abciximab; Cost-effectiveness ratio.
- Published
- 2003
- Full Text
- View/download PDF
17. CONVERGENT VALIDITY OF THE DEPRESSION-HAPPINESS SCALE WITH THE BRADBURN AFFECT BALANCE SCALE.
- Author
-
LEWIS, CHRISTOPHER ALAN, MCCOLLAM, PADDY, and JOSEPH, STEPHEN
- Subjects
- *
MENTAL depression , *HAPPINESS , *AFFECT (Psychology) , *WELL-being , *PSYCHOLOGY of Undergraduates , *TEST validity - Abstract
The aim in the present paper was to provide further evidence for the convergent validity of the Depression-Happiness Scale (Joseph & Lewis, 1998; McGreal & Joseph, 1993). The Affect Balance Scale (Bradburn, 1969), a measure which is very well established in the subjective well-being literature, containing measures of both positive and negative affect, was administered alongside the Depression-Happiness Scale to 67 undergraduate students. As predicted, higher scores on the Depression- Happiness Scale, indicating a higher frequency of positive feelings and a lower frequency of negative feelings, were significantly associated with higher scores on the Affect Balance Scale and the Affect Positive Scale and also with lower scores on the Affect Negative Scale. These data provide further evidence of the convergent validity of the Depression-Happiness Scale. [ABSTRACT FROM AUTHOR]
- Published
- 2000
- Full Text
- View/download PDF
18. Putting the process in developmental processes.
- Author
-
Nesselroade, John R. and Schmidt McCollam, Karen M.
- Subjects
- *
SOCIAL science research , *DEFINITION (Logic) , *ITEM response theory - Abstract
Several signs point to a strengthening of our capabilities for rigorously modelling developmental processes and other kinds of changes. The indicators of progress range from stronger formulations of ''systems thinking'' and definitions through measurement and design considerations to advanced mathematical representations, such as linear and nonlinear dynamical systems models. We believe these advances offer major improvements for the treatment of process and related concepts as they have evolved thus far largely within the meta-model of stability and equilibrium that has dominated much of science (Holling, 1973). These issues are summarised and some of the promising innovations that we believe will make the coming decades highly productive ones for the study of development will be discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2000
- Full Text
- View/download PDF
19. Is the link between endorsement and engagement in sexual coercion associated with life history strategy?
- Author
-
McCollam, Róisín, Mullaney, Aoife, and Lee, Anthony J.
- Subjects
- *
MACHIAVELLIANISM (Psychology) , *SEXUAL consent , *LIFE history theory , *PSYCHOPATHY , *NARCISSISM , *SEXUAL aggression - Abstract
We assess whether traits associated with life history strategy moderate the association between endorsement and engagement of sexual coercion. In a sample of 155 men, we measured engagement in subtle sexually coercive behaviours using a novel measure, where participants reported their likely response when faced with several sexual/dating scenarios (e.g., a situation where the participant is sexually rejected). We also measured participants on mating effort, aggression, socioeconomic status (SES), the dark triad traits (psychopathy, narcissism, and Machiavellianism), and endorsement of sexual coercion through acceptance of rape myths. We found that men high in mating effort, SES, and Machiavellianism were more likely to engage in sexually coercion. As expected, greater endorsement was associated with greater engagement in sexual coercion, and this was significantly moderated by narcissism and Machiavellianism, but in opposite directions, with higher levels of Machiavellianism and lower levels of narcissism associated with a greater association between endorsement and engagement. Overall, there was no consistent pattern between traits associated with an accelerated life history strategy and sexually coercive behaviour. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
20. In cold type.
- Author
-
McCOLLAM, DOUGLAS
- Subjects
- *
INTERVIEWING in journalism - Abstract
The article discusses an interview Truman Capote, an author and journalist for "The New Yorker" magazine, conducted with actor Marlon Brando in Japan in 1957 during the filming of the motion picture "Sayonara," directed by Josh Logan. The author discusses the history of Capote's rise as an author and Brando's rise as an actor. Topics include Capote's interview with artist Andy Warhol, Capote's interview style and his ability to remember his interview subject's remarks without a tape recorder, and Brando's attempts to stop the publication of the interview in "The New Yorker."
- Published
- 2012
21. LIVELIHOODS ON THE LINE.
- Author
-
McCollam, Douglas
- Subjects
- *
OIL spills , *SEAFOOD industry , *OIL spills & the environment , *BIODIVERSITY - Abstract
The article discusses the impact of the BP PLC's oil spill on the seafood industry in the Gulf of Mexico. Forrest Travirca, a former state wildlife officer who work as a field inspector for the Wisner Donation land trust, reveals that sands in Fourchon Beach and nearby areas contain oil and other toxic substances due to the spill. It also agues that the use of the Corexit dispersant to break up the oil amplifies the adverse effects of the spill on the oysters, shrimp, fish and crabs, resulting to the losses of the seafood business including P&J Oyster Co. Also mentioned is the effort of the Center for Biological Diversity and the Sierra Club to take legal actions against BP.
- Published
- 2011
22. A Man in Full.
- Author
-
McCollam, Douglas
- Subjects
- *
RADIO talk programs , *RADIO journalism , *RADIO broadcasting & politics , *RADIO broadcasting -- Social aspects , *HURRICANE Katrina, 2005 , *EMPLOYMENT - Abstract
The article presents a profile of radio talk show host Garland Robinette, who has a daily program on station WWL in New Orleans, Lousiana. A former television journalist in that city, Robinette began his talk show shortly before Hurricane Katrina in 2005. He gained celebrity for his programs before the storm, in which he strongly urged residents to evacuate the city, and for his broadcasts both during and immediately after the storm, which were one of the few means of communication for residents in the aftermath of the disaster. Robinette's program is frequently devoted to what he views as the government's inadequacies in responding to the hurricane and to reconstruction efforts. He is a particularly harsh critic of the U.S. Army Corps of Engineers.
- Published
- 2009
23. Sulzberger at the Barricades.
- Author
-
Mccollam, Douglas
- Subjects
- *
NEWSPAPERS , *ONLINE journalism , *STOCK prices , *NEWSPAPER circulation , *ECONOMICS - Abstract
The article discusses Arthur Sulzberger Jr., publisher of the newspaper "The New York Times," and his management of the paper amid financial difficulties. The author notes declines in stock value, revenue and circulation for the New York Times Co., which resulted in staff lay-offs. Hedge-fund managers Philip Falcone and Scott Galloway bought a stake in the company and Galloway was elected to the company's board of directors. Sulzberger has redirected much of the company's resources to focus on digital and Internet operations but the company's online news subscription service TimesSelect failed. The author notes shareholder complaints over the control of the company by the Ochs-Sulzberger family.
- Published
- 2008
24. The Shame Game.
- Author
-
McCollam, Douglas
- Subjects
- *
PROSECUTORS , *SUICIDE , *MINORITY sex offenders , *REALITY television programs , *ETHICS - Abstract
This article offers a look at the television program "To Catch a Predator," on Dateline NBC, which shows an elaborate operation targeting adults using the Internet to solicit sex from minors. According to the article, after realizing that he had been tricked and would be seen as a sexual predator, Louis Conradt, Jr., a county prosecutor from Terrell, Texas, killed himself in front of police officers and the Dateline camera crew. The author discusses the positive and negative influences of the show on the lives of Americans. The article provides quotes from Chris Hansen, a Dateline correspondent.
- Published
- 2007
25. THE END OF AMBIGUITY.
- Author
-
McCollam, Douglas
- Subjects
- *
GOVERNMENT & the press , *SECURITY classification (Government documents) , *INTELLIGENCE service , *REPORTERS & reporting , *ATTRIBUTION of news , *FREEDOM of the press , *ESPIONAGE - Abstract
The article analyzes how the U.S. government has been trying to suppress press freedom. During the administration of former U.S. President Franklin D. Roosevelt, Chicago Tribune published a story claiming that the U.S. military knows the plan of the Japanese to attack at sea. The president was so furious that he almost ordered the marines to occupy the Tribune building and to charge its publisher, Colonel Robert McCormick, with treason. Though it was not pursued, the administration did publicly pursue charges that the paper had violated the Espionage Act of 1917. This situation has resurfaced under the leadership of U.S. President George W. Bush. Some commentators cited the incident should be used to prosecute reporters who publish stories based on classified information that officials view as damaging to national security.
- Published
- 2006
26. A WAY OUT?
- Author
-
McCollam, Douglas
- Subjects
- *
NEWSPAPER ownership , *GOING private (Securities) , *PRIVATIZATION , *NEWSPAPER publishing , *LEVERAGED buyouts , *BUYOUTS , *MASS media , *JOURNALISM - Abstract
This article focuses on the issue concerning the need for newspaper firms in the U.S. to become privately-owned companies. The combination of the precipitous decline in stock prices, shareholder unrest and the general pessimism of the market concerning the newspaper business have raised an interesting issue on whether it is viable for newspapers to remain publicly traded companies. Newspapers are ideal candidates for leveraged buyout because they have such high operating margins, meaning they can service a lot of debt without drowning in it. They also do not have to make a lot of capital-intensive expenditures on research and development or infrastructure. Private ownership has the potential to give newspapers the needed space to plan and invest in long-term strategies, on both the business and editorial sides.
- Published
- 2006
27. UNCHARTED WATERS.
- Author
-
McCollam, Douglas
- Subjects
- *
HURRICANE Katrina, 2005 , *NEWSPAPERS , *PERIODICALS , *EMPLOYEES - Abstract
Presents an article about the impact of Hurricane Katrina that hit New Orleans, Louisiana on "The Times-Picayune" newspaper of the city. Status of the city following the attack of the hurricane; Efforts of the newspaper staff to cover the disaster; Challenges being faced by the newspaper staff following the disaster.
- Published
- 2005
28. The Crowded Theater: It's time for American journalism to rise out of its defensive crouch.
- Author
-
McCollam, Douglas
- Subjects
- *
JOURNALISM , *PRESS , *MASS media , *PUBLIC relations - Abstract
This article focuses on the development of objective journalism in the U.S. in 2005. Objective journalism is nurtured by the assumption of shared values. It was the common burdens of depression and war in the last century that reinforced the idea of an objective press, a high-minded model adopted in response to excesses of the earlier yellow journalism. That societal consensus was put to the test, needless to say, during the Vietnam and Watergate eras. Since then, the notion of consensus itself has come under increasing pressure both in and out of journalism and many of those who have tried to stay in the middle of the road have gotten squashed. The separation of the polity into two evenly divided camps has left precious little room for moderation in any walk of public life and the press is among the institutions feeling the ideological squeeze. Hence, from the founding, the U.S. press was meant to be oppositional. This stance puts journalists directly in the cross hairs of any ruling cadre, which is just where they should be. It is no coincidence that the two institutions most reliably opposed to entrenched power in the last century. Thus, journalism and the judiciary sectors are today under tandem assault.
- Published
- 2005
29. Attack at the Source: Why the Plame case is so scary.
- Author
-
McCollam, Douglas
- Subjects
- *
ATTRIBUTION of news , *OFF-the-record information in journalism , *MASS media , *REPORTERS & reporting - Abstract
This article examines the ability of reporters to protect anonymous sources. Government and private lawyers seem to have taken their cue from corporations and begun their own attacks on news gathering. In particular, they have homed in on the right reporters to keep sources confidential. Courts have proven willing to recognize that certain kinds of communication should be shielded from discovery. The most recent example came in 1996 when the U.S. Supreme Court ruled that communications between a patient and a therapist or social worker were privileged under federal law. Some see that as directly analogous to the reporter-source privilege. But as a general rule, courts believe they have the right to hear every man's evidence and privileges against testifying are not favored in the law. Over time only a few such exemptions have been endorsed, including the attorney-client privilege, the doctor-patient privilege, the priest-penitent privilege, the spousal privilege and the therapist privilege. The U.S. Constitution also forbids compelling people to testify against themselves. The difficulty in crafting the reporter's privilege has led most states to grant only qualified protection to reporter-source communications.
- Published
- 2005
30. THE LIST.
- Author
-
McCollam, Douglas
- Subjects
- *
GOVERNMENT & the press , *PRESS & politics , *PRESS - Abstract
Ahmad Chalabi's defectors told stories to a lot of reporters who now wish they'd kept their distance.. The memo outlined something called the Information Collection Program, an INC operation that now appears to have provided bogus information about Saddam Hussein's weapons and terrorist connections to the American government and to the press in the run-up to the Iraq war. The list includes articles from nearly every blue-blooded news outfit in America, including The New York Times, The Washington Post, The Wall Street Journal, The New Yorker, Vanity Fair, Time, Newsweek, The Atlantic Monthly, 60 Minutes, USA Today, the New York Daily News, UPI, and Fox News. The purpose, apparently, was to introduce Isikoff to Sabah Khalifa Khodada, an Iraqi army defector who claimed to know about a secret training camp near Salman Pak, twenty miles south of Baghdad, where Hussein was training Islamic extremists. And a few reporters deserve special recognition for their work in exposing problems with the program, including Drogin, Michael Isikoff and Mark Hosenball at Newsweek, and Jonathan Landay of Knight-Ridder.
- Published
- 2004
31. SHOULD THIS PULITZER BE PULLED.
- Author
-
McCollam, Douglas
- Subjects
- *
PULITZER Prizes , *AWARDS , *FAMINES - Abstract
Discusses the campaign of several Ukrainian groups around the world to revoke the Pulitzer Prize of Walter Duranty, the "New York Times" newspaper's correspondent in Moscow, Russia from 1922 to 1934. Role of Duranty and the "New York Times" in the Ukrainian famine-genocide according to Michael Sawkiw Jr., president of the Ukrainian Congress Committee of America; Response of the board of the Pulitzer Prize to the issue; Failure of Duranty to report about the 1932-1933 famine in Ukraine.
- Published
- 2003
32. All-in-one probe for exploring self-organized two-fluid equilibria in toroidal plasmas.
- Author
-
Himura, H., Almagri, A. F., Sarff, J. S., Ashida, Y., Inagaki, S., Fujiwara, H., Inoue, T., Sanpei, A., Linden, J. von der, McCollam, K. J., Hurst, N. C., and Forest, C. B.
- Subjects
- *
OHM'S law , *PINCH effect (Physics) , *BORON nitride , *ION migration & velocity , *PLASMA equilibrium , *TOROIDAL plasma - Abstract
This paper presents the development of an all-in-one probe to simultaneously measure all components of the generalized Ohm's law in reversed-field pinch plasmas and tokamaks. The polyhedral configuration of the Mach probe is achieved through the specific arrangement, angle, and depth of the collimator channel apertures drilled into the surface of a hollow boron nitride cylinder encasing it. This probe includes a central Mach probe to assess the ion velocity field in three dimensions. Initial tests at the RELAX and Madison Symmetric Torus machines have confirmed the probe's effectiveness, revealing an octahedron form similar to a tetrahedron. The probe seems to function correctly and is expected to facilitate the empirical validation of two-fluid equilibria at the periphery of toroidal plasmas. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
33. After Atticus.
- Author
-
McCOLLAM, DOUGLAS
- Subjects
- *
FINCH, Atticus (Fictional character) , *LAWYERS in literature , *LAWYERS - Abstract
The article discusses the legal fiction standard associated with the character of fictional attorney Atticus Finch of Harper Lee's novel "To Kill a Mockingbird." Topics explored include the creation of the Harper Lee Prize for Legal Fiction to acknowledge the way Finch significantly influenced the role of lawyers in the society, the theme of Deborah Johnson's novel "The Secret of Magic" which earned the 2015 Harper Lee Prize, and the common portrayal of lawyers in legal drama.
- Published
- 2015
34. MANAGING on the FLY.
- Author
-
McCOLLAM, DOUGLAS
- Subjects
- *
EXECUTIVES , *LAW firms , *AIR travel , *VIDEOCONFERENCING , *BLOGS , *PERSONAL trainers , *PHYSICAL fitness - Abstract
The article discusses how managing partners and executives of law firms deal with the physical challenges of frequent air travel. Topics mentioned include the use of videoconferencing and blogs by managing partners and chairmen to loop in partners from across the globe, the demand for 24-hour gym or a personal trainer, and the constant jet lag as the biggest physical challenge for partners and chairmen. INSET: AIRBORNE EMERGENCIES.
- Published
- 2015
35. A bipolar happiness and depression scale.
- Author
-
Joseph, Stephen and McCollam, Paddy
- Subjects
- *
HAPPINESS testing , *MENTAL depression , *TESTING - Abstract
Presents a bipolar happiness and depression scale. Comparison between single and bipolar happiness and depression scale; Test measure; Interpretation of the scores.
- Published
- 1993
- Full Text
- View/download PDF
36. Religiosity and obsessionality: A refinement.
- Author
-
Maltby, John and McCollam, Paddy
- Subjects
- *
WORSHIP , *PSYCHOLOGY - Abstract
Compares the obsessional symptoms of those who participate in communal worship and those who practice other forms of religious worship. S. Freud's observation of the resemblance between obsessive actions and religious practices.
- Published
- 1994
- Full Text
- View/download PDF
37. A Distant Echo.
- Author
-
McCollam, Douglas
- Subjects
- *
ESSAYS , *MASS media & public opinion , *RIGHT & left (Political science) , *POLITICAL candidates - Abstract
The essay discusses Father Charles E. Coughlin, a priest who developed a national radio following during the administration of former U.S. President Franklin D. Roosevelt, and parallels to the television personality Glenn Beck. It cites the invective of Coughlin's rhetoric and his interest in launching a third party to sway the 1936 presidential election towards a Republican. In the end, the candidate of the enormously popular and charismatic Coughlin garnered less than a million votes.
- Published
- 2010
38. Somewhere East of Eden: Why the "St. Pete Times" model can't save newspapers.
- Author
-
McCollam, Douglas
- Subjects
- *
NEWSPAPER ownership , *CONTINUING education in journalism , *MASS media industry , *ASSOCIATIONS, institutions, etc. ,POYNTER Institute (Saint Petersburg, Fla.) - Abstract
This essay discusses the "St. Petersburg Times" newspaper in Florida and its ownership by the nonprofit Poynter Institute for Media Studies. The complicated relationship between the two entities, both legacies of the late Nelson Poynter, is discussed. The nonprofit foundation owns the for-profit Times Publishing Company, which puts out the newspaper, and one person heads all three—Paul Tash since 2004. Though widely upheld as a model of quality journalism independent of a corporate bottom line, the "St. Petersburg Times" model is seen as difficult to replicate.
- Published
- 2008
39. A FALL FROM GRACE.
- Author
-
McCollam, Douglas
- Subjects
- *
JOURNALISTIC ethics , *PERIODICALS , *STEREOTYPES , *BLOGS , *WEBSITES - Abstract
The article deals with the fate of Gregg Easterbrook, a journalist, who learned the importance of the fragility of reputation as a journalist. On October 13, 2003, Easterbrook wrote a criticism on the motion picture "Kill Bill--Vol. 1," directed by Quentin Tarantino and released by Miramax, a division of the Walt Disney Co., as his entry for "Easterblogg," a Weblog he launched on the Web site of "The New Republic," five weeks earlier. Easterbrook was disgusted by the graphic violence and said so in his blog piece. He criticized Michael Eisner, CEO of Walt Disney Co., and Harvey Weinstein, CEO of Miramax. He accuses Eisner and Weinstein of worshiping money ad promoting for profit the adulation of violence. Two days after, Easterbrook was pilloried in "The New York Times, the "Los Angeles Times" and in other newspapers, magazines and Web sites. He has been denounced by the Anti-Defamation League as a bigot and fired from a lucrative job writing for ESPN.com. Easterbrook, now realizing the importance of the dangers of stereotyping, apologized to Eisner and Weinstein and claims that he is willing to engage in a public discussion to discuss such issue.
- Published
- 2004
40. Effects of oscillating poloidal current drive on magnetic relaxation in the Madison Symmetric Torus reversed-field pinch.
- Author
-
Zichao Li, K J McCollam, T Nishizawa, E Parke, J S Sarff, Z A Xing, Hong Li, Wandong Liu, and Weixing Ding
- Subjects
- *
MAGNETIC relaxation , *TORUS , *POLOIDAL magnetic fields , *MAGNETIC reconnection , *PLASMA equilibrium , *MAGNETIC fields , *ENTRAINMENT (Physics) - Abstract
Magnetic relaxation behavior in reversed-field pinch (RFP) experiments on the Madison Symmetric Torus device is modified by oscillating poloidal current drive (OPCD). We observe that OPCD modulates the nonlinear magnetic fluctuation dynamics of the RFP as it modulates the equilibrium and its linear stability properties. In particular, OPCD can entrain the RFP’s nonlinear magnetic relaxation cycle and can therefore modify the frequency of the discrete relaxation events called sawtooth crashes. These crashes, which are intermittent or quasiperiodic in standard RFP plasmas without oscillating voltages, can be entrained by OPCD to become nearly periodic. The entrainment of the RFP sawtooth cycle is investigated by varying OPCD amplitude and frequency, as well as plasma equilibrium magnetic field reversal. Impurity ion (C+4) heating induced and modulated by OPCD is measured by ion Doppler spectrometry and is ascribed to the modulation of magnetic reconnection activity. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
41. Lifshitz transition enabling superconducting dome around a charge-order critical point.
- Author
-
Hinlopen, Roemer D. H., Moulding, Owen N., Broad, William R., Buhot, Jonathan, Bangma, Femke, McCollam, Alix, Ayres, Jake, Sayers, Charles J., Da Como, Enrico, Flicker, Felix, van Weze, Jasper, and Friedemann, Sven
- Subjects
- *
CRITICAL point (Thermodynamics) , *PHASES of matter , *FERMI surfaces , *QUANTUM measurement , *SUPERCONDUCTIVITY , *HIGH temperature superconductors , *IRON-based superconductors , *SUPERCONDUCTING transitions - Abstract
Superconductivity often emerges as a dome around a quantum critical point (QCP) where long-range order is suppressed to zero temperature, mostly in magnetically ordered materials. However, the emergence of superconductivity at charge-order QCPs remains shrouded in mystery, despite its relevance to high-temperature superconductors and other exotic phases of matter. Here, we present resistance measurements proving that a dome of superconductivity surrounds the putative charge-density-wave QCP in pristine samples of titanium diselenide tuned with hydrostatic pressure. In addition, our quantum oscillation measurements combined with electronic structure calculations show that superconductivity sets in precisely when large electron and hole pockets suddenly appear through an abrupt change of the Fermi surface topology, also known as a Lifshitz transition. Combined with the known repulsive interaction, this suggests that unconventional s± superconductivity is mediated by charge-density-wave fluctuations in titanium diselenide. These results highlight the importance of the electronic ground state and charge fluctuations in enabling unconventional superconductivity. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
42. An octahedral Mach B-dot probe for 3D flows and magnetic fields in the edge of reversed field pinches.
- Author
-
Sellner, A. M., von der Linden, J., Himura, H., Reksoatmodjo, R., Sears, J., You, S., Almagri, A. F., McCollam, K. J., Reyfman, M., Rouda, C. C., and Sarff, J. S.
- Abstract
Measurements and simulations show that plasma relaxation processes in the reversed field pinch drive and redistribute both magnetic flux and momentum. To examine this relaxation process, a new 3D Mach B-dot probe has been constructed. This probe collects ion saturation currents through six molybdenum electrodes arranged on the flattened vertices of an octahedron made of boron nitride (BN). The ion saturation current flows through configurable voltage dividers for measurement and returns through one of six selectable return electrodes equally spaced along the 12 cm BN probe arm. In addition, the probe arm houses three B-dot magnetic pickup coils in the BN stalk immediately below to the octahedron, to measure the local magnetic field. Inserted in the Madison Symmetric Torus (MST) during deuterium discharges with 220 kA plasma current, density of 0.8 × 1013 cm−3, the probe collects ion saturation currents with sawtooth-like peaks correlated with relaxation events. This compact octahedral design fitting six Mach electrode surfaces within a 1 cm3 cube will enable future multi-point, multi-field probes compatible with the 1.5 in. ports of MST. Such probes will allow for flow circulation, current, and canonical vorticity to be calculated in the center of the finite difference stencil formed by the measurement locations. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
43. Visualizing Severity of Alopecia Tool (SALT) scores in the clinical setting using patient images from a clinical trial.
- Author
-
Atanaskova Mesinkovska, Natasha, King, Brett A., Vañó‐Galván, Sergio, Shimomura, Yutaka, Jedynak, Jakub, McCollam, Jill, Pierce, Evangeline, Ellinwood, Amy K., and Sinclair, Rodney
- Published
- 2024
- Full Text
- View/download PDF
44. The Accidental Defenders.
- Author
-
McCollam, Douglas
- Subjects
- *
LAWYERS , *ACTIONS & defenses (Administrative law) , *ACTIONS & defenses (Law) ,TEXAS. Court of Criminal Appeals - Abstract
Features James Blank of Latham & Watkins, lawyer of Ernest Willis, a man convicted of capital murder for setting a house on fire in Iraan, Texas. Other lawsuits handled by Blank; Decision of the Texas Court of Criminal Appeals on the case; Background on the release of Willis.
- Published
- 2005
45. Americans IN PARIS.
- Author
-
McCollam, Douglas
- Subjects
- *
LAW firms , *MERGERS & acquisitions - Abstract
Looks at how law firms, Debevoise & Plimpton and Gotshal & Manges, won the merger and acquisition deal between Vivendi Universal Entertainment (VUE) and General Electric Co. (GE) in 2003. Background on the merger; Bidders that expressed their interest on VUE; Deal offered by GE to VUE.
- Published
- 2004
46. Last Men Standing.
- Author
-
McCollam, Douglas
- Subjects
- *
COMPENSATION (Law) , *BREAST implants , *BREAST surgery , *ACTIONS & defenses (Administrative law) , *ACTIONS & defenses (Law) - Abstract
Focuses on the compensation claims of several women injured by breast implants. Facts of the fraud case filed against Dow Corning Corp. by Charlotte Mahlum, a recipient of silicone breast implant; Implications of the case; Background on Dow Corning. INSET: A SHORT HISTORY OF A LONG LITIGATION.
- Published
- 2004
47. BETTING ON THE BALKANS.
- Author
-
McCollam, Douglas
- Subjects
- *
LAW firms , *LAWYERS - Abstract
Reports on several law firms that set up offices in the Balkan Peninsula. Discussion of how Robert Hayhurst formed Hayhurst Berlad Robinson in the Balkan Peninsula; Actions taken by Baker Botts lawyers to sort out the ownership of INA-Industrija nafte d.d., an oil and gas holdings in Croatia; Functions of Linklaters as an advisor to the Romanian government.
- Published
- 2004
48. CROSSING SIGNALS.
- Author
-
McCollam, Douglas
- Subjects
- *
LAW firms , *PRACTICE of law - Abstract
Examines issues on the dispute between law firm Simpson Thacher & Bartlett and Global Crossing Ltd. Allegations of the company's financial officer Roy Olofson regarding its accounting and reporting practices; Details of Simpson's involvement with the Olofson letter; Aid given by D. Rhett Brandon, a Simpson partner who had been serving as Global Crossing's interim general counsel, regarding the case.
- Published
- 2003
49. The Ghost of GIDEON.
- Author
-
McCollam, Douglas
- Subjects
- *
PRO bono publico legal services , *ACTION & defense cases , *U.S. states - Abstract
Reports on how U.S. states guarantee the right to counsel for the poor. History of the U.S. Supreme Court case of Gideon versus Wainwright; Absence of state funding for indigent defense in Mississippi; Burden of defending indigent cases.
- Published
- 2003
50. The Perfect Storm.
- Author
-
McCollam, Douglas
- Subjects
- *
FINANCIAL crises , *JUNK bonds , *WAR - Abstract
Compares several finance-related crises which took place in the U.S. in the early 1990s and in 2001. Collapse of Nasdaq and the junk bond market; Scandals involving Enron Corp. and Drexel; Entry of the U.S. into the Gulf War in 1990 and its war on terrorism in 2001.
- Published
- 2002
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.