bluuebunny/crossref_metadata_2025 huggingface dataset:
Parental involvement: a discretionary presumption
Authors: Kaganas Felicity
Published: August 2018

Section 1(2A) of the Children Act 1989 establishes a statutory presumption that ‘involvement’ of both parents in their children's lives after divorce or separation is in children's best interests. This paper sets out to examine what effect this had had. The aim of the legislation was to improve the transparency and clarity of judges’ reasoning. This would help to reduce the numbers of parents litigating and would placate fathers’ rights groups who were damaging confidence in the family justice system. Drawing on a sample of reported cases, this paper concludes that, at the higher levels, courts are not implementing the presumption. Nor has the presumption succeeded in placating fathers’ rights groups or significantly reducing the number of cases coming to court. It appears that the presumption has had little impact and the government's aims have not been realised. However, where it is having some impact, the presumption may be putting mothers and children at risk.
Canine echinococcosis screening in foxhound hunts in England and Wales using coproantigen ELISA and coproPCR
Authors: Lett Wai San , Boufana Belgees , Lahmar Samia , Bradshaw Helen , Walters Thomas M.H. , Brouwer Arjen , Fraser Alasdair R. , Maskell Deborah , Craig Philip S.
Published: August 2018

A total of eight foxhound packs in England and Wales were screened for Echinococcus species using a genus-specific coproantigen ELISA and for Echinococcus granulosus sensu lato and Echinococcus equinus by coproPCR. Main screening (n = 364 hounds) occurred during 2010–2011 wherein a quarter (25.6%) of the foxhound fecal samples tested were Echinococcus coproantigen-positive (93/364). In total, five of eight (62.5%) hunts screened had coproantigen-positive hounds; coproantigen prevalence for individual foxhound packs ranged from 0 to 61.2% and was shown to be >30% in three hunts (in counties of Powys, Wales and Northumberland, England). Foxhound fecal samples from six of the eight tested hunts (four Welsh and two English hunts) were positive by coproPCR for E. granulosus s.l (including one sequence confirmation of E. granulosus sensu stricto) and E. equinus DNA. Analysis of hunt questionnaire data suggested that there was an association between poor foxhound husbandry, especially feeding practices and Echinococcus coproantigen prevalence. Clearer guidelines regarding the risk of canine echinococcosis are required for safe management of foxhound hunts in England and Wales.
The Impact of the Number of a Trustee's Social Identities on Their Trustworthiness
Authors: Xin Ziqiang , Zhang Yue
Published: August 2018

Although many studies have focused on how trustees’ particular or single social identity affects their trustworthiness, only one study has revealed that trustees with multiple social identities are judged as more trustworthy than those with a single identity. However, the study could not show how trustworthiness systematically changes with an increasing number of social identities. The present study addressed this issue and further explored in two experiments whether the growth trend of trustworthiness was particular to social identities. Experiment 1 showed that when the number of trustees’ social identities increased, they were judged as more trustworthy. Experiment 2 found that trustees with more social identities were judged as more trustworthy, whereas the amount of trustees’ personal physical information did not have that large effect in facilitating trustworthiness. These results demonstrate the special influence of social identity information on trust or trustworthiness.
Factors That Inhibit and Facilitate Wellbeing and Effectiveness in Counsellors Working With Refugees and Asylum Seekers in Australia
Authors: Roberts Rachel M. , Ong Natasha Won-Yee , Raftery John
Published: August 2018

This study aimed to identify the factors that counsellors working with refugees and asylum seekers in Australia consider influence their wellbeing and effectiveness. Nine employees in counsellor roles were interviewed. Thematic analysis indicated that government policies and practices were the greatest challenge. Factors facilitating effectiveness and wellbeing included having clear values, being able to see results for the client, receiving organisational support, working in a positive organisational culture, and having the support of family and friends. Factors inhibiting wellbeing included personal pressure to exert change, counsellor experience, feeling alienated from the community, lack of supervision, unclear organisational guidelines, and organisational values not being upheld. Along with the reported negative impact, positive psychological transformation was also reported. Through reflection on their clients’ strengths and resilience, participants reported feeling inspired, with increased effectiveness and wellbeing rather than vicarious trauma. This research contributes to the discussion about the psychologically harmful effects of government refugee and asylum seeker policy on counsellors and their clients.
What is Islamophobia? Disentangling Citizens’ Feelings Toward Ethnicity, Religion and Religiosity Using a Survey Experiment
Authors: Helbling Marc , Traunmüller Richard
Published: August 2018

What citizens think about Muslim immigrants has important implications for some of the most pressing challenges facing Western democracies. To advance contemporary understanding of what ‘Islamophobia’ really is – for example, whether it is a dislike based on immigrants’ ethnic background, religious identity or specific religious behaviors – this study fielded a representative online survey experiment in the UK in summer 2015. The results suggest that Muslim immigrants are not per se viewed more negatively than Christian immigrants. Instead, the study finds evidence that citizens’ uneasiness with Muslim immigration is first and foremost the result of a rejection of fundamentalist forms of religiosity. This suggests that common explanations, which are based on simple dichotomies between liberal supporters and conservative critics of immigration, need to be re-evaluated. While the politically left and culturally liberal have more positive attitudes toward immigrants than right-leaning individuals and conservatives, they are also far more critical of religious groups. The study concludes that a large part of the current political controversy over Muslim immigration is related to this double opposition: it is less about immigrants versus natives or even Muslim versus Christians than about political liberalism versus religious fundamentalism.
Willingness of farmers to pay for satellite-based irrigation advisory services: a southern Italy experience
Authors: Altobelli F. , Lall U. , Dalla Marta A. , Caracciolo F. , Cicia G. , D'Urso G. , Del Giudice T.
Published: August 2018

The aim of the current study was to define, optimize and customize IRRISAT, a fully operative satellite-based irrigation advisory service (IAS) provided in Campania Region, Italy, using a choice experiment to determine the preferences of farmers regarding the main characteristics and attributes of IRRISAT. Furthermore, willingness to pay for the main attributes of the services provided was estimated. The information on the amount of water required for irrigation provided by the IAS is sent out to farmers via SMS and email, as well as via the IRRISAT webpage. The study was related to the 2013–2014 irrigation season, when the service provided support to 669 farmers over an area of 55 ha. The study considered four attributes and levels of IRRISAT service: land management unit (scale of service); different levels of water saving (5, 10 and 30%) that could be achieved at different prices; annual fee paid by farmers (ranging between €6 and €10/ha/year); length of contract for the service supply, ranging from 1 to 3 years. Results showed that farmers’ preferences are influenced positively by scale (entire area of the farm instead of single fields) and duration of the service delivering contract. Concerning the duration of the contract, the most preferred option was the 3-year service. Finally, water saving was shown to affect farmers’ choices very little and thus it is probably less attractive for farmers probably due to the low price and to a relatively large availability of water for irrigation.
Comparative analyses of the complete mitochondrial genomes of Cyathostomum pateratum and Cyathostomum catinatum provide new molecular data for the evolution of Cyathostominae nematodes
Authors: Qiu Y.Y. , Zeng M.H. , Diao P.W. , Wang X.X. , Li Q. , Li Y. , Gao Y. , Wang C.R.
Published: August 2018

The parasiteCyathostomum pateratum, which occurs in the large intestine of equines, is a common species of the subfamily Cyathostominae. Cyathostominae nematodes are a complex nematode group for which only limited genetic information has been reported. To re-examine the phylogenetic relationships among Cyathostominae nematodes, we sequenced the complete mitochondrial (mt) genome ofCy. pateratumand compared it with the mt genome of the congeneric speciesCyathostomum catinatum.The complete mtDNA sequence ofCy. pateratumwas 13,822 bp in length, 16 bp shorter than that ofCy. catinatum.The mtDNA sequences of both species contained 12 protein-coding genes, two rRNA genes and 22 tRNA genes, and all 36 genes were transcribed in the same direction and in the same strand. Pairwise comparisons of the 12 predicted amino acid sequences betweenCy. catinatumandCy. pateratumrevealed differences of 0.4–3.1%; the least conserved sequence was that of cytochromecoxidase subunit 3 (cox3). Phylogenetic analysis of the concatenated amino acid sequences using Bayesian inference and maximum likelihood methods showed thatCy. catinatumandCy. pateratumclustered together with very high nodal support, andCylicostephanus goldiwas closer to theCyathostomumnematodes than to other Cyathostominae nematodes. The mtDNA sequence ofCy. pateratumis reported here for the first time. The study will shed some light on the genetic evolution among parasitic nematodes inCyathostomum.
Analytical properties of linear electrostatic waves in two-component quantum and classical plasmas
Authors: Rightley Shane , Uzdensky Dmitri
Published: August 2018

We examine the properties of linear electrostatic waves in unmagnetised quantum and classical plasmas consisting of one or two populations of electrons with analytically tractable distribution functions in the presence of a stationary neutralising ion background. Beginning with the kinetic quantum plasma longitudinal susceptibility, we assess the effects due to increasing complexity of the background distribution function. Firstly, we analyse dispersion and Landau damping in one-component plasmas and consider distribution functions with a variety of analytical properties: the Dirac delta function, the Cauchy profile with two complex first-order poles, the squared Cauchy profile with two second-order poles and the inverse-quartic profile with four first-order poles; we also briefly discuss the non-meromorphic totally and arbitrarily degenerate Fermi–Dirac distribution. In order to study electrostatic instabilities, we then turn to plasmas with two populations of electrons streaming relative to each other in two cases: a symmetric case of two counter-streaming identical populations and a bump-on-tail case with a primary population and a delta-function beam. We obtain the corresponding linear kinetic dispersion relations and evaluate the properties of instabilities when the electron distribution functions are of the delta function, Cauchy, squared Cauchy or inverse-quartic types. In agreement with other studies, we find that in general quantum effects reduce the range of wavelengths for unstable modes at long wavelengths. We also find a second window of instability at shorter wavelengths and elucidate its nature as being due to quantum recoil. We note the possible implications for studies of laboratory and astrophysical quantum plasmas.
Spared bottom-up but impaired top-down interactive effects during naturalistic language processing in schizophrenia: evidence from the visual-world paradigm
Authors: Rabagliati Hugh , Delaney-Busch Nathaniel , Snedeker Jesse , Kuperberg Gina
Published: August 2018

Background

People with schizophrenia process language in unusual ways, but the causes of these abnormalities are unclear. In particular, it has proven difficult to empirically disentangle explanations based on impairments in the top-down processing of higher level information from those based on the bottom-up processing of lower level information.

Methods

To distinguish these accounts, we used visual-world eye tracking, a paradigm that measures spoken language processing during real-world interactions. Participants listened to and then acted out syntactically ambiguous spoken instructions (e.g. ‘tickle the frog with the feather’, which could either specify how to tickle a frog, or which frog to tickle). We contrasted how 24 people with schizophrenia and 24 demographically matched controls used two types of lower level information (prosody and lexical representations) and two types of higher level information (pragmatic and discourse-level representations) to resolve the ambiguous meanings of these instructions. Eye tracking allowed us to assess how participants arrived at their interpretation in real time, while recordings of participants’ actions measured how they ultimately interpreted the instructions.

Results

We found a striking dissociation in participants’ eye movements: the two groups were similarly adept at using lower level information to immediately constrain their interpretations of the instructions, but only controls showed evidence of fast top-down use of higher level information. People with schizophrenia, nonetheless, did eventually reach the same interpretations as controls.

Conclusions

These data suggest that language abnormalities in schizophrenia partially result from a failure to use higher level information in a top-down fashion, to constrain the interpretation of language as it unfolds in real time.
Non-suicidal self-injury prevalence, course, and association with suicidal thoughts and behaviors in two large, representative samples of US Army soldiers
Authors: Turner Brianna J. , Kleiman Evan M. , Nock Matthew K.
Published: August 2018

Background

Non-suicidal self-injury (NSSI) prospectively predicts suicidal thoughts and behaviors in civilian populations. Despite high rates of suicide among US military members, little is known about the prevalence and course of NSSI, or how NSSI relates to suicidal thoughts and behaviors, in military personnel.

Methods

We conducted secondary analyses of two representative surveys of active-duty soldiers (N = 21 449) and newly enlisted soldiers (N = 38 507) from the Army Study to Assess Risk and Resilience in Servicemembers (Army STARRS).

Results

The lifetime prevalence of NSSI is 6.3% (1.2% 12-month prevalence) in active-duty soldiers and 7.9% (1.3% 12-month prevalence) in new soldiers. Demographic risk factors for lifetime NSSI include female sex, younger age, non-Hispanic white ethnicity, never having married, and lower educational attainment. The association of NSSI with temporally primary internalizing and externalizing disorders varies by service history (new v. active-duty soldiers) and gender (men v. women). In both active-duty and new soldiers, NSSI is associated with increased odds of subsequent onset of suicidal ideation [adjusted odds ratio (OR) = 1.66–1.81] and suicide attempts (adjusted OR = 2.02–2.43), although not with the transition from ideation to attempt (adjusted OR = 0.92–1.36). Soldiers with a history of NSSI are more likely to have made multiple suicide attempts, compared with soldiers without NSSI.

Conclusions

NSSI is prevalent among US Army soldiers and is associated with significantly increased odds of later suicidal thoughts and behaviors, even after NSSI has resolved. Suicide risk assessments in military populations should screen for history of NSSI.
Can we predict the direction of sudden shifts in symptoms? Transdiagnostic implications from a complex systems perspective on psychopathology
Authors: Wichers Marieke , Schreuder Marieke J. , Goekoop Rutger , Groen Robin N.
Published: August 2018

Recently, there has been renewed interest in the application of assumptions from complex systems theory in the field of psychopathology. One assumption, with high clinical relevance, is that sudden transitions in symptoms may be anticipated by rising instability in the system, which can be detected with early warning signals (EWS). Empirical studies support the idea that this principle also applies to the field of psychopathology. The current manuscript discusses whether assumptions from complex systems theory can additionally be informative with respect to the specific symptom dimension in which such a transition will occur (e.g. whether a transition towards anxious, depressive or manic symptoms is most likely). From a complex systems perspective, both EWS measured in single symptom dynamics and network symptom dynamics at large are hypothesized to provide clues regarding the direction of the transition. Challenging research designs are needed to provide empirical validation of these hypotheses. These designs should be able to follow sudden transitions ‘live’ using frequent observations of symptoms within individuals and apply a transdiagnostic approach to psychopathology. If the assumptions proposed are supported by empirical studies then this will signify a large improvement in the possibility for personalized estimations of the course of psychiatric symptoms. Such information can be extremely useful for early intervention strategies aimed at preventing specific psychiatric problems.
Salience and the emergence of international norms: Napalm and cluster munitions in the inhumane weapons convention
Authors: Rosert Elvira
Published: August 2018

This article theorises salience – defined as the amount of attention granted to an issue – as an explanatory factor for the emergence and non-emergence of norms, and shows how salience affects existing explanations such as issue adoption by norm entrepreneurs, mobilisation, social pressure, and framing. The relevance of salience is demonstrated by exploring the question of why the norm against incendiary weapons was adopted in the Convention on Certain Conventional Weapons (CCW) in 1980, and why the norm against cluster munitions was not, even though both weapons were deemed particularly inhumane and thus, put on the agenda when the CCW negotiations started in 1978. Drawing on secondary sources and on original data from public and institutional discourses, I study the influence of salience on the emergence of the anti-napalm norm and the non-emergence of the anti-cluster munitions norm in the period of 1945–80. The results demonstrate that and how the discrepancy in salience of the napalm and the cluster munitions issues mattered for the outcomes of the two norm-setting processes.
THE FACTOR-LASSO AND K-STEP BOOTSTRAP APPROACH FOR INFERENCE IN HIGH-DIMENSIONAL ECONOMIC APPLICATIONS
Authors: Hansen Christian , Liao Yuan
Published: August 2018

We consider inference about coefficients on a small number of variables of interest in a linear panel data model with additive unobserved individual and time specific effects and a large number of additional time-varying confounding variables. We suppose that, in addition to unrestricted time and individual specific effects, these confounding variables are generated by a small number of common factors and high-dimensional weakly dependent disturbances. We allow that both the factors and the disturbances are related to the outcome variable and other variables of interest. To make informative inference feasible, we impose that the contribution of the part of the confounding variables not captured by time specific effects, individual specific effects, or the common factors can be captured by a relatively small number of terms whose identities are unknown. Within this framework, we provide a convenient inferential procedure based on factor extraction followed by lasso regression and show that the procedure has good asymptotic properties. We also provide a simplek-step bootstrap procedure that may be used to construct inferential statements about the low-dimensional parameters of interest and prove its asymptotic validity. We provide simulation evidence about the performance of our procedure and illustrate its use in an empirical application.
Epidemiological characteristics of asymptomatic Norovirus infection in a population from oyster (Ostrea rivularis Gould) farms in southern China
Authors: Wang Anna , Huang Qiong , Qin Lin , Zhong Xianwu , Li Hui , Chen Rongfeng , Wan Zhuang , Lin Hong , Liang Junhua , Li Jiansen , Zhuang Yali , Zhang Yonghui
Published: August 2018

The following paper investigates the prevalence and characteristics of asymptomatic norovirus infection in the population living around oyster farm sites. Two consecutive surveys were conducted from January 2014 to December 2014 and 4549 stool samples were screened during the same time period. The total asymptomatic infection rate was 4.04% (184/4549). Norovirus infection rate was 5.20% in oyster farming population which was significantly higher compared with non-farming population where the infection rate was 3.65% (χ2 = 5.49, P < 0.05). A total of 184 NoV positive samples were identified by real time-quantitative polymerase chain reaction (RT-qPCR) and semi-nested RT-PCR and 136 sequences were obtained. The sequences were clustered into 14 genotypes. GI strains were clustered into six genotypes, including GI.2, GI.3, GI.5, GI.6, GI.8 and GI.9; while GII strains were clustered into GII.2, GII.3, GII.4, GII.5, GII.6, GII.8 and GII.13. GI.9 and GII.17 were the predominant and most prevalent genotypes, respectively. The GII.17 genotype replaced GII.4 becoming the dominant genotype in the oyster farming area in 2014. To sum up, long-term monitoring of asymptomatic infection is crucial for the detection of new variant strains and for identifying outbreaks during the early stage.
Point-of-use water treatment improves recovery rates among children with severe acute malnutrition in Pakistan: results from a site-randomized trial
Authors: Doocy Shannon , Tappis Hannah , Villeminot Nicolas , Suk Ann , Kumar Deepak , Fazal Shahid , Grant Angeline , Pietzsch Silke
Published: August 2018

Objective

To evaluate effectiveness of point-of-use water treatment in improving treatment of children affected by severe acute malnutrition (SAM).

Design

Programme sites were randomized to one of four intervention arms: (i) standard SAM treatment; (ii) SAM treatment plus flocculent/disinfectant water treatment; (iii) SAM treatment plus chlorine disinfectant; or (iv) SAM treatment plus ceramic water filter. Outcome measures were calculated based on participant status upon exit or after 120d of enrolment, whichever came first. Child anthropometric data were collected during weekly monitoring at programme sites. Child caregivers were interviewed at enrolment and exit. Use of water treatment products was assessed in a home visit 4–6 weeks after enrolment.

Setting

Dadu District, Sindh Province, Pakistan.

Subjects

Children (n 901) aged 6–59 months with SAM and no medical complications.

Results

Recovery rates were 16·7–22·2 % higher among children receiving water treatment compared with the control group. The adjusted odds of recovery were approximately twice as high for those receiving water treatment compared with controls. Mean length of stay until recovery was 73 (sd 24·6) d and mean rate of weight gain was 4·7 (sd 3·0) g/kg per d. Differences in recovery rate, length of stay and rate of weight gain between intervention groups were not statistically significant.

Conclusions

Incorporating point-of-use water treatment into outpatient treatment programmes for children with SAM increased nutritional recovery rates. No significant differences in recovery rates were observed between the different intervention groups, indicating that different water treatment approaches were equally effective in improving recovery.
Comparing primary care pediatricians’ perceptions of clinics with and without integrated behavioral health
Authors: Lancaster Blake , Cook Andrew , Bruni Teryn , Sturza Julie , Sevecke Jessica , Ham Hannah , Knight Rachel , Hoffses Kathryn , Wickham Cheryl A. , Orringer Kelly A.
Published: August 2018

Objective: The purpose of this study was to investigate primary care pediatrician (PCP) perceptions of prevalence of, time spent in, and satisfaction with behavioral health services across clinics with and without on-site behavioral health providers (BHPs). Methods: A cross-sectional survey design was used to examine satisfaction across sites. Data were collected on PCP perceptions of behavioral health services among 60 pediatricians within two academic medical systems. Results: PCPs perceived behavioral health issues are prevalent and a time-consuming aspect of medical appointments and preferred to have on-site BHPs over off-site referral sources. Compared to sites without an on-site BHP, sites with on-site BHPs were more satisfied with behavioral health service availability and resources, felt they spent more time addressing medical concerns, and spent less time providing anticipatory guidance. Discussion: Study limitations included questions surrounding the validity of survey items to accurately assess PCP perceptions, lack of rigorous experimental design, and reliance on self-report data.
Bewegungstherapie und körperliche Aktivität bei Patienten mit Herzinsuffizienz
Authors: Wilhelm Matthias
Published: August 2018

Zusammenfassung. Herzinsuffizienz ist ein klinisches Syndrom mit unterschiedlichen Ätiologien und Phänotypen. Die überwachte Bewegungstherapie und individuelle körperliche Aktivität ist bei allen Formen eine Klasse-IA-Empfehlung in aktuellen Leitlinien. Eine Bewegungstherapie kann unmittelbar nach Stabilisierung einer akuten Herzinsuffizienz im Spital begonnen werden (Phase I). Sie kann nach Entlassung in einem stationären oder ambulanten Präventions- und Rehabilitationsprogramm fortgesetzt werden (Phase II). Typische Elemente sind Ausdauer-, Kraft- und Atemtraining. Die Kosten werden von der Krankenversicherung für drei bis sechs Monate übernommen. In erfahrenen Zentren können auch Patienten mit implantierten Defibrillatoren oder linksventrikulären Unterstützungssystemen trainieren. Wichtiges Ziel der Phase II ist neben muskulärer Rekonditionierung auch die Steigerung der Gesundheitskompetenz, um die Langzeit-Adhärenz bezüglich körperlicher Aktivität zu verbessern. In Phase III bieten Herzgruppen Unterstützung.
Bewegung als Therapie nachhaltig in der Gesundheitsversorgung verankern
Authors: Marcacci Alberto
Published: August 2018

Zusammenfassung. Wer sich regelmässig bewegt, mindert das Risiko, nichtübertragbare Erkrankungen, wie Krebs oder Diabetes, zu erleiden. Im Rahmen der Nationalen Strategie zur Prävention nichtübertragbarer Krankheiten soll Bewegung als Therapieform deshalb künftig in der Gesundheitsversorgung verankert werden. Sportmedizinerinnen und -mediziner nehmen dabei eine wichtige Rolle als Multiplikatoren ein.
Activité physique et cancer
Authors: Beuchat-Mamie Stephanie , Sperisen Nicolas , Molnar Pierre , Koçer Serdar
Published: August 2018

Zusammenfassung. Dieser Artikel zielt darauf ab, die Literatur über die Rolle der körperlichen Aktivität bei Krebspatienten zusammenzufassen und Trainingsprogramme vorzuschlagen, die auf Studien und Empfehlungen basieren. Medizinische Fortschritte mit verbesserter Früherkennung und Behandlung haben die Zahl der Krebsüberlebenden erhöht. Gleichzeitig muss auch die Lebensqualität dieser Patienten verbessert werden. In den verschiedenen Stadien der Erkrankung spielt die körperliche Aktivität, mit ihren positiven Auswirkungen auf Müdigkeit, körperliche Verfassung, Stimmung usw., eine wichtige Rolle. Die Zusammenarbeit zwischen den verschiedenen Akteuren des Gesundheitswesens, die Patienteninformation und die Aufklärung sind der Schlüssel zum Erfolg dieser multidisziplinären Versorgung.
Bewegung und Sport in der Therapie chronischer Erkrankungen – Koronare Herzkrankheit
Authors: Schmied Christian M.
Published: August 2018

Zusammenfassung. Trotz immer fortschrittlicherer diagnostischer und therapeutischer Mittel stellt die koronare Herzkrankheit (KHK) bzw. der Myokardinfarkt weiterhin die mit Abstand häufigste Todesursache weltweit dar. Umso wichtiger ist in diesem Zusammenhang die volle Ausschöpfung zwar bekannter, aber bei weitem nicht optimal genutzter therapeutischer Massnahmen. Eine adäquate körperliche Betätigung im Alltag und ein zusätzliches gezieltes Training führen evidenzbasiert zu einer Verbesserung der Lebensqualität, zu einer Senkung der Morbidität und vor allem auch zu einer signifikanten Reduktion der kardialen und gesamten Mortalität. Entscheidend in der ärztlichen Trainingsberatung ist dabei aber eine akkurate Risikoeinschätzung des individuellen Patienten mit einer konsequenten Trainingsempfehlung und -überwachung. Die heutigen Sportempfehlungen bei KHK sind im Vergleich zu früher deutlich liberaler geworden und erlauben Patienten mit verhältnismässig niedrigem Risiko für einen plötzlichen Herztod praktisch jegliche sportliche Betätigung. Diese, nach optimaler Risikoeinschätzung progressive Haltung ist wichtig, zeigen doch neuere Daten auch bei KHK-Patienten eine dosisabhängige Steigerung des präventiven Effekts mit der Zunahme des Ausmasses an wöchentlichem Training.
Lateral Transport of N‐Rich Dissolved Organic Matter Strengthens Phosphorus Deficiency in Western Subtropical North Atlantic
Authors: Vidal Montserrat , Aspillaga Eneko , Teixidor‐Toneu Irene , Delgado‐Huertas Antonio
Published: August 2018

The ability of the subtropical North Atlantic to sustain export production despite the lack of available nutrients is fascinating. Subtropical gyres are expected to expand under a global warming scenario, so it is important to understand the mechanisms supplying the required nutrients. Current issues for the region concern the nutrient and metabolic balance, the origin of excess nitrogen and phosphorus shortage, and the maintenance of nitrogen fixation. We report data on the allocation of nitrogen and phosphorus in dissolved and suspended pools, the isotopic δ15N of suspended nitrogen, and the lability of dissolved organic phosphorus (DOP) along a section crossing the eastern seasonally stratified North Atlantic and the western subtropical North Atlantic (NASW). We find extreme P‐deficiency in the NASW, with the highest dissolved inorganic N:P ratios located within the upperthermocline isopycnals (σϴ = 26.3–26.8). Our data indicate an important role of the midlatitude northeast seasonally stratified North Atlantic bringing dissolved organic matter (DOM) to the thermocline of the North Atlantic. The mineralization of N‐rich DOM contributes to the N excess (P deficit) of the upperthermocline of NASW. We find lower concentrations of more reactive DOP in the western than in the eastern part of the transect, indicating an active role of DOP in the nutrition of microbial communities. Our results support recent hypotheses concerning the environmental controls of marine nitrogen fixation identifying the key role of DOP utilization.
Multispecies and Multifluid MHD Approaches for the Study of Ionospheric Escape at Mars
Authors: Regoli L. H. , Dong C. , Ma Y. , Dubinin E. , Manchester W. B. , Bougher S. W. , Welling D. T.
Published: August 2018

A detailed model‐model comparison between the results provided by a multispecies and a multifluid magnetohydrodynamic (MHD) code for the escape of heavy ions in the Martian‐induced magnetosphere is presented. The results from the simulations are analyzed and compared against a statistical analysis of the outflow of heavy ions obtained by the Mars Atmosphere and Volatile EvolutioN/Suprathermal and Thermal Ion Composition instrument over an extended period of time in order to estimate the influence of magnetic forces in the ion escape. Both MHD models are run with the same chemical reactions and ion species in a steady state mode under idealized solar conditions. Apart from being able to reproduce the asymmetries observed in the ion escape, it is found that the multifluid approach provides results that are closer to those inferred from the ion data. It is also found that the j × B force term is less effective in accelerating the ions in the models when compared with the Mars Atmosphere and Volatile EvolutioN results. Finally, by looking at the contribution of the plume and the ion escape rates at different distances along the tail with the multifluid model, it is also found that the escape of heavy ions has important variabilities along the tail, meaning that the apoapsis of a spacecraft studying atmospheric escape can affect the estimates obtained.
Stream Runoff and Nitrate Recovery Times After Forest Disturbance in the USA and Japan
Authors: Oda Tomoki , Green Mark B. , Urakawa Rieko , Scanlon Todd M. , Sebestyen Stephen D. , McGuire Kevin J. , Katsuyama Masanori , Fukuzawa Karibu , Adams Mary B. , Ohte Nobuhito
Published: August 2018

To understand mechanisms of long‐term hydrological and biogeochemical recovery after forest disturbance, it is important to evaluate recovery times (i.e., time scales associated with the return to baseline or predisturbance conditions) of stream runoff and nitrate concentration. Previous studies have focused on either the response of runoff or nitrate concentration, and some have specifically addressed recovery times following disturbance. However, controlling factors have not yet been elucidated. Knowing these relationships will advance our understanding of each recovery process. The objectives of this study were to explore the relationship between runoff and nitrate recovery times and identify potential factors controlling each. We acquired long‐term runoff and stream water nitrate concentration data from 20 sites in the USA and Japan. We then examined the relationship between runoff and nitrate recovery times at these multiple sites and use these relationships to discuss the ecosystem dynamics following forest disturbance. Nitrate response was detected at all study sites, while runoff responses were detected at all sites with disturbance intensities greater than 75% of the catchment area. The runoff recovery time was significantly correlated with the nitrate recovery time for catchments that had a runoff response. For these catchments, hydrological recovery times were slower than nitrate recovery times. The relationship between these two recovery times suggests that forest regeneration was a common control on both recovery times. However, the faster recovery time for nitrate suggests that nitrogen was less available or less mobile in these catchments than water.
Using Matching Methods to Estimate Impacts of Wildfire and Postwildfire Flooding on House Prices
Authors: Mueller Julie M. , Lima Ryan E. , Springer Abraham E. , Schiefer Erik
Published: August 2018

The increasing frequency and severity of landscape‐scale wildfire poses new challenges for forested watershed management. The Schultz Fire burned 6,100 ha on the steep slopes of San Francisco Mountain near Flagstaff, AZ, USA in 2010. Within a month of the wildfire, summer monsoon rains created flooding and debris flows 1–2 orders of magnitude greater than prewildfire rainfall events. We estimate a hedonic property model to determine the loss in house prices from the wildfire and postwildfire flooding. While several studies examine the effects of wildfires and flooding on housing prices separately, to our knowledge, no study has determined the effects of postwildfire flooding in a fire‐adapted watershed. Most hedonic property models estimating impacts of wildfire or flooding use regression analysis to predict impacts. We also contribute to the hedonic property model literature by using nonparametric matching techniques. We find a negative and statistically significant average treatment effect of wildfire and post‐wildfire flooding. The treatment effect, however, differs relative to distance to wildfire perimeter and distance to flood zones. For example, houses located within 5 km of the Schultz Fire perimeter have an estimated 31% loss, while houses within 20 km have an estimated 6% loss. In addition, prices for houses located within 100 m of the 5‐year flood drop by 10% after the flood, whereas prices for houses within 2 km drop by 5%. Our results indicate that careful consideration of the impacts of both wildfire and postwildfire flooding is essential for understanding the net benefits of forested watershed restoration.
Thermophysical Properties of Martian Fluvial Sinuous Ridges: Inferences on “Inverted Channel” Induration Agent
Authors: Williams Rebecca M. E. , Moersch Jeffrey E. , Fergason Robin L.
Published: August 2018

In denuded landscapes, terrestrial inverted fluvial landforms are preferentially preserved due to their greater resistance to erosion from clast armoring, lava infilling, or cementation. These induration agents have differing material properties that should influence the thermal response of the surface. Using thermal inertia derived from 2001 Mars Odyssey Thermal Emission Imaging System (THEMIS) data, we find that the thermophysical contrast for 20 large “inverted channels” on Mars is comparable or elevated in comparison to nearby well‐indurated materials. The fluvial sinuous ridge (FSR) thermal signature, together with regional geology and morphology attributes, leads us to disfavor clast armoring as an induration agent for most Martian FSRs. The available evidence is consistent with cementation as the most likely induration agent for FSRs, although lava infilling is a plausible explanation especially for instances of nearby volcanic edifices. FSR cementation, probably by near‐surface solute‐rich groundwater, extends aqueous processes beyond the period of widespread fluvial activity. Future work on the temporal response of the surfaces of inverted channels has the potential to further test the inferred induration mechanism and potentially constrain the grain size distribution.
Better Plant Data at the Root of Ecosystem Models
Authors: McCormack M. , Powell A. , Iversen Colleen
Published: August 2018

Version 2 of the Fine-Root Ecology Database is bigger, better, and free to download and use.
Mercury Sourcing and Sequestration in Weathering Profiles at Six Critical Zone Observatories
Authors: Richardson Justin B. , Aguirre Arnulfo A. , Buss Heather L. , Toby O'Geen A. , Gu Xin , Rempe Daniella M. , Richter Daniel de B.
Published: August 2018

Mercury sequestration in regolith (soils + weathered bedrock) is an important ecosystem service of the critical zone. This has largely remained unexplored, due to the difficulty of sample collection and the assumption that Hg is predominantly sequestered within surface soils (here we define as 0–0.3 m). We measured Hg concentrations and inventories in weathering profiles at six Critical Zone Observatories (CZOs): Boulder Creek in the Front Range of Colorado, Calhoun in the South Carolina Piedmont, Eel River in coastal northern California, Luquillo in the tropical montane forest of Puerto Rico, Shale Hills of the valley and ridges of central Pennsylvania, and Southern Sierra in the Sierra Nevada range of California. Surface soils had higher Hg concentrations than the deepest regolith samples, except for Eel River, which had lower Hg concentrations in surface soils compared to regolith. Using Ti normalization, CZOs with <12% rock‐derived Hg (Boulder Creek, Calhoun, and Southern Sierra) had Hg peaks between 1.5 and 8.0 m in depth. At CZOs with >50% rock‐derived Hg, Eel River Hg concentrations and pools were greatest at >4.0 m in the weathering profile, while Luquillo and Shale Hills had peaks at the surface that diminished within 1.0 m of the surface. Hg and total organic C were only significantly correlated in regolith at Luquillo and Shale Hills CZOs, suggesting that Hg sorption to organic matter may be less dominant than clays or Fe(II) sulfides in deeper regolith. Our results demonstrate the importance of Hg sequestration in deep regolith, below typical soil sampling depths.
On the Origin of STEVE: Particle Precipitation or Ionospheric Skyglow?
Authors: Gallardo‐Lacourt B. , Liang J. , Nishimura Y. , Donovan E.
Published: August 2018

One of the recent developments in ionospheric research was the introduction of a subauroral spectacle called STEVE (Strong Thermal Emission Velocity Enhancement). Although STEVE has been documented by amateur night sky watchers for decades, it is an exciting new upper atmospheric phenomenon for the scientific community. Observed first by amateur auroral photographers, STEVE appeared as a narrow luminous structure across the night sky. Currently, only one scientific study has focused on STEVE, revealing that it corresponds to a narrow (tens of kilometers in north‐south extent) and long (thousands of kilometers in east‐west direction) structure located in the subauroral region. An important and fundamental question that arises from this study is the origin of STEVE; more specifically, does STEVE correspond to a new ionospheric phenomenon or is it due to particle precipitation? In this letter, we analyze a STEVE event on 28 March 2008 observed by Time History of Events and Macroscale Interactions during Substorms (THEMIS) ground‐based All‐Sky Imagers and a Polar Orbiting Environmental Satellite (POES). The POES‐17 satellite crossed STEVE at the center of the All‐Sky Imager field‐of‐view, allowing us to collect particle data simultaneously. These concurrent measurements show that STEVE might not be associated with particle precipitation (electrons or ions). Therefore, this event suggests that STEVE's skyglow (which we defined to be unrelated to aurora or airglow) could be generated in the ionosphere.
Lake Surface Water Temperature Change Over the Tibetan Plateau From 2001 to 2015: A Sensitive Indicator of the Warming Climate
Authors: Wan W. , Zhao L. , Xie H. , Liu B. , Li H. , Cui Y. , Ma Y. , Hong Y.
Published: August 2018

The Tibetan Plateau (TP) plays a significant role in the Earth's climate system. This letter examines the nighttime lake surface water temperature (LSWT) of 374 lakes (≥10 km2 each) over the TP for the past 15 years (2001–2015). An overall warming trend (0.037 °C/year) is found and it is consistent with the warming air temperature (0.036 °C/year) over the TP, with the vast majority of the lakes (70%, with 28% of which are significant) showing warming (0.076 °C/year) and the rest (30%, with 37% of which are significant) showing cooling (−0.053 °C/year). This astonishing contrast was controlled by different water sources recharging these lakes: (1) warming LSWT due to increased precipitation (central and northern TP) or permafrost degradation (northwestern TP) and (2) cooling LSWT due to increased glacier meltwater (southwestern TP), revealing LSWT a sensitive indicator to climate change that triggered different regional responses in precipitation, permafrost, and glacier changes over the TP. This study helps improve our understanding of high‐altitude lakes and their changing mechanisms under the warming climate.
Temporal‐Scale Analysis of Environmental Controls on Sea Spray Aerosol Production Over the South Pacific Gyre
Authors: Dror Tom , Lehahn Yoav , Altaratz Orit , Koren Ilan
Published: August 2018

An understanding of sea spray aerosol (SSA) production is needed to better assess its influence on climate. Using satellite data, we investigated the production of the coarse mode of aerosol optical depth (AODc), a proxy for SSA, over the pristine South Pacific Gyre. The analysis was done on three time scales: daily, seasonal, and interannual. Scale‐dependent links were shown between the AODc and wind speed (W). AODc and W were positively correlated on both daily and interannual time scales but were significantly anticorrelated on the seasonal time scale. Seasonality of the AODc − W link suggests contribution of other environmental factors. The main variable that could statistically explain trends in AODc on the seasonal time scale was chlorophyll a concentration, which showed a clear negative correlation with AODc. The AODc yield per W unit was clearly reduced when chlorophyll a concentration was high, suggesting a secondary, but important influence of marine biological activity on SSA production.
Quantifying the Stress of the Saturnian Magnetosphere During the Cassini Era
Authors: Staniland N. R. , Dougherty M. K. , Masters A.
Published: August 2018

We quantify the magnetospheric stress state of Saturn, revealing the nature of the planetary environment and its current systems. The complete magnetic field data set collected by the Cassini spacecraft is used to track the global behavior of the Saturnian magnetosphere during the Cassini era. Variations in the magnetodisc current model parameter μoIo determine when the system is stretched, compressed, or near the ground state. Of the 111 orbits that pass through our chosen region, 69 are well described by the model, indicating a steady state current sheet during this interval. While the stress state displays a dependence on local time, it is also shown to vary temporally. We conclude that the Saturnian magnetosphere remained in a quiet state for a significant period of the Cassini orbital mission at Saturn, with occasional large‐scale deviations observed.
Azimuth Estimations From a Small Aperture Infrasonic Array: Test Observations at Stromboli Volcano, Italy
Authors: Yamakawa Kazuya , Ichihara Mie , Ishii Kyoka , Aoyama Hiroshi , Nishimura Takeshi , Ripepe Maurizio
Published: August 2018

We tested the performance of an infrasonic array consisting of three microphones with a 20‐m aperture at Stromboli volcano, Italy. There were four active vents separated by ∼10∘. We employed multiple signal classification (MUSIC) to estimate direction of arrival (DOA) of the detected signals. Using test signals of which the source vents were identified by visual observation, the resolution of DOA estimation of MUSIC is compared with those of Capon beamforming, grid search, and semblance. We confirmed that MUSIC and grid search gave better resolution of DOA than the other two methods. Also, MUSIC provided the best resolutions in time and frequency. It was shown that the DOA switched between different vents or fluctuated in short time scales and can vary with frequency, which indicate multiple active sources. Possible DOA estimation errors were evaluated. A small aperture infrasonic array combined with MUSIC will become a powerful tool for studying and monitoring active volcanoes.
Standing Alfvén Waves in Jupiter's Magnetosphere as a Source of ∼10‐ to 60‐Min Quasiperiodic Pulsations
Authors: Manners H. , Masters A. , Yates J. N.
Published: August 2018

Energy transport inside the giant magnetosphere at Jupiter is poorly understood. Since the Pioneer era, mysterious quasiperiodic (QP) pulsations have been reported. Early publications successfully modeled case studies of ∼60‐min (rest‐frame) pulsations as standing Alfvén waves. Since then, the range of periods has increased to ∼10–60 min, spanning multiple data sets. More work is required to assess whether a common QP modulation mechanism is capable of explaining the full range of wave periods. Here we have modeled standing Alfvén waves to compute the natural periods of the Jovian magnetosphere, for varying plasma sheet thicknesses, field line lengths, and Alfvén speeds. We show that variability in the plasma sheet produces eigenperiods that are consistent with all the reported observations. At least the first half‐dozen harmonics (excluding the fundamental) may contribute but are indistinguishable in our analysis. We suggest that all QP pulsations reported at Jupiter may be explained by standing Alfvén waves.