Detection of Contact Binaries Using Sparse High Phase Angle Lightcurves

We show that candidate contact binary asteroids can be efficiently identified from sparsely sampled photometry taken at phase angles >60deg. At high phase angle, close/contact binary systems produce distinctive lightcurves that spend most of the time at maximum or minimum (typically >1mag apart) brightness with relatively fast transitions between the two. This means that a few (~5) sparse observations will suffice to measure the large range of variation and identify candidate contact binary systems. This finding can be used in the context of all-sky surveys to constrain the fraction of contact binary near-Earth objects. High phase angle lightcurve data can also reveal the absolute sense of the spin.Comment: 4 pages, 4 figures, 1 table. Accepted for publication in ApJ

Extreme Kuiper Belt Object 2001 QG298 and the Fraction of Contact Binaries

Extensive time-resolved observations of Kuiper Belt object 2001 QG298 show a lightcurve with a peak-to-peak variation of 1.14 +-0.04 magnitudes and single-peaked period of 6.8872 +- 0.0002 hr. The mean absolute magnitude is 6.85 magnitudes which corresponds to a mean effective radius of 122 (77) km if an albedo of 0.04 (0.10) is assumed. This is the first known Kuiper Belt object and only the third minor planet with a radius > 25 km to display a lightcurve with a range in excess of 1 magnitude. We find the colors to be typical for a Kuiper Belt object (B-V = 1.00 +- 0.04, V-R = 0.60 +- 0.02) with no variation in color between minimum and maximum light. The large light variation, relatively long double-peaked period and absence of rotational color change argue against explanations due to albedo markings or elongation due to high angular momentum. Instead, we suggest that 2001 QG298 may be a very close or contact binary similar in structure to what has been independently proposed for the Trojan asteroid 624 Hektor. If so, its rotational period would be twice the lightcurve period or 13.7744 +- 0.0004 hr. By correcting for the effects of projection, we estimate that the fraction of similar objects in the Kuiper Belt is at least 10% to 20% with the true fraction probably much higher. A high abundance of close and contact binaries is expected in some scenarios for the evolution of binary Kuiper Belt objects.Comment: 15 text pages,6 figures(Color),5 Tables, Accepted to AJ for May 200

Current Approaches, Typologies and Predictors of Deviant Work Behaviors: A Scoping Review of Reviews

This study provides a scoping review of the recent conceptual developments about the deviant work behavior and counterproductive work behavior constructs. It also examines the specific types of deviant work behavior that have been more consistently investigated in the last decade, and whether they cover the interpersonal or organizational type of deviant behavior. In addition, individual, group, and organizational predictors of deviant work behaviors are examined. A scoping review of reviews was conducted on Scopus and Web of Science databases and 54 studies published from 2010 to June 2021 were taken into account. Results show that more recent conceptualizations are based on well established models in the literature and consider the hierarchical structure of these two constructs. Recent reviews examine the relationships of deviant work behavior with job performance and ethical behavior constructs, the multilevel nature of deviant work behavior, and the consequences for the actor of the deviance. The specific types of deviant work behavior more frequently reviewed in the last decade are workplace abuse, incivility, ostracism, bullying and sexual harassment, and abusive and destructive leadership; this evidence suggests a much greater attention to interpersonal, rather than organizational, forms of deviant work behavior. Regarding antecedents, results show the continuing prevalence of personality factors antecedents. Limitations of the study and theoretical and practical implications for the field are also provided

SiPM and front-end electronics development for Cherenkov light detection

The Italian Institute of Nuclear Physics (INFN) is involved in the development of a demonstrator for a SiPM-based camera for the Cherenkov Telescope Array (CTA) experiment, with a pixel size of 6$\times$6 mm$^2$. The camera houses about two thousands electronics channels and is both light and compact. In this framework, a R&D program for the development of SiPMs suitable for Cherenkov light detection (so called NUV SiPMs) is ongoing. Different photosensors have been produced at Fondazione Bruno Kessler (FBK), with different micro-cell dimensions and fill factors, in different geometrical arrangements. At the same time, INFN is developing front-end electronics based on the waveform sampling technique optimized for the new NUV SiPM. Measurements on 1$\times$1 mm$^2$, 3$\times$3 mm$^2$, and 6$\times$6 mm$^2$ NUV SiPMs coupled to the front-end electronics are presentedComment: In Proceedings of the 34th International Cosmic Ray Conference (ICRC2015), The Hague, The Netherlands. All CTA contributions at arXiv:1508.0589

Formation of the Pre-Pensioner Segment in the Labor Market: Financial and Management aspects

В статье рассмотрены результаты реализации пенсионной реформы России 2018 г., отраженные в изменениях по- казателей рынка труда по данным Росстата. Цель исследования — развитие научного представления о процессах становления сегмента предпенсионеров российского рынка труда под воздействием его внешних и внутренних факторов. Применены методы статистического, корреляционного и регрессионного анализов, расчет средней по определенному интегралу функций, а также метод линейного моделирования множественной регрессии. Оценена научная разработанность проблематики темы за рубежом и в России. Проанализированы вопросы финансовой гра- мотности населения. Рассмотрено финансирование обучения предпенсионеров актуально востребуемым на рынке труда профессиональным компетенциям и поддержки безработных предпенсионеров, состоящих на учете в цент- ре занятости. Выполнен отбор релевантных данных демографии и выборочного обследования рабочей силы по возрастным группам. Рассчитана общая численность предпенсионеров в 2018–2020 гг. и их структура по статусу трудовой активности на российском рынке труда. Проанализированы общие динамические, структурные и гендер- ные характеристики экономической активности предпенсионеров на рынке труда. Оценена востребованность пред- пенсионеров по видам экономической деятельности в 2019 г. Сделан вывод, что существует тенденция уменьше- ния доли сегмента предпенсионеров на рынке труда после достижения проектного рубежа пенсионного возраста с 10,88 до 9,76%. Уровень занятости в этой группе населения составит 66%. Установлено, что востребованность предпенсионеров по видам экономической деятельности на рынке труда у женщин в 1,13 раза выше, чем у мужчин. Разработан методический подход к анализу результатов оценки востребованности предпенсионерами мер государ- ственной поддержки. Проанализировано влияние финансовых и социальных мер господдержки предпенсионеров на повышение их трудовой активности и конкурентоспособности на рынке труда. Результаты исследования могут быть использованы органами власти для обоснования оценки эффективности финансирования принимаемых ими мер по социально-экономической поддержке предпенсионеров.The article considers the results of the implementation of the pension reform in Russia in 2018, reflected in changes in labor market indicators according to Rosstat. The purpose of the study is to develop a scientific understanding of the processes of formation of the pre-pensioner segment of the Russian labor market under the influence of its external and internal factors. The authors use methods of statistical, correlation, and regression analyses, the calculation of the assesses the scientific elaboration of the research topic abroad and in Russia. The issues of financial literacy of the population are analyzed. The financing of the training of pre-retirees in the professional competencies that are currently in demand on the labor market and support for unemployed pre-retirees who are registered with the employment center are considered. The selection of relevant demographic data and a sample labor force survey by age group has been carried out. The total number of pre-pensioners in 2018–2020 has been calculated and their structure according to the status of labor activity in the Russian labor market has been identified. The general dynamic, structural, and gender characteristics of the economic activity of pre-pensioners in the labor market are analyzed. The demand for pre-retirees by type of economic activity in 2019 is assessed. The authors conclude that there is a tendency to reduce the share of the pre-pensioner segment in the labor market after reaching the project retirement age threshold from 10.88% to 9.76%. The employment rate in this group of the population will be 66%. The study has established that the demand for pre-pensioners by type of economic activity in the labor market is 1.13 times higher for women than for men. A methodical approach has been developed to analyze the results of assessing the demand for state support measures by pre-pensioners. The article analyzes the influence of financial and social measures of state support for pre-pensioners on increasing their labor activity and competitiveness in the labor market. The results of the study can be used by the authorities to substantiate the assessment of the effectiveness of financing the measures they take to provide social and economic support to pre-retirees

Groundwater residence time estimates obscured by anthropogenic carbonate

© The Author(s), 2021. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Seltzer, A. M., Bekaert, D. V., Barry, P. H., Durkin, K. E., Mace, E. K., Aalseth, C. E., Zappala, J. C., Mueller, P., Jurgens, B., & Kulongoski, J. T. Groundwater residence time estimates obscured by anthropogenic carbonate. Science Advances, 7(17), (2021): eabf3503, https://doi.org/10.1126/sciadv.abf3503.Groundwater is an important source of drinking and irrigation water. Dating groundwater informs its vulnerability to contamination and aids in calibrating flow models. Here, we report measurements of multiple age tracers (14C, 3H, 39Ar, and 85Kr) and parameters relevant to dissolved inorganic carbon (DIC) from 17 wells in California’s San Joaquin Valley (SJV), an agricultural region that is heavily reliant on groundwater. We find evidence for a major mid-20th century shift in groundwater DIC input from mostly closed- to mostly open-system carbonate dissolution, which we suggest is driven by input of anthropogenic carbonate soil amendments. Crucially, enhanced open-system dissolution, in which DIC equilibrates with soil CO2, fundamentally affects the initial 14C activity of recently recharged groundwater. Conventional 14C dating of deeper SJV groundwater, assuming an open system, substantially overestimates residence time and thereby underestimates susceptibility to modern contamination. Because carbonate soil amendments are ubiquitous, other groundwater-reliant agricultural regions may be similarly affected.his work was conducted as a part of the USGS National Water Quality Assessment Program (NAWQA) Enhanced Trends Project (https://water.usgs.gov/nawqa/studies/gwtrends/). Measurements at Argonne National Laboratory were supported by Department of Energy, Office of Science under contract DE-AC02-06CH11357. Measurements at Pacific Northwest National Laboratory were part of the Ultra-Sensitive Nuclear Measurements Initiative conducted under the Laboratory Directed Research and Development Program. PNNL is operated by Battelle for the U.S. Department of Energy under Contract DE-AC05-76RL01830. This work was also partially supported by NSF award OCE-1923915 (to A.M.S. and P.H.B. at WHOI)

Introduction to the functional RG and applications to gauge theories

These lectures contain an introduction to modern renormalization group (RG) methods as well as functional RG approaches to gauge theories. In the first lecture, the functional renormalization group is introduced with a focus on the flow equation for the effective average action. The second lecture is devoted to a discussion of flow equations and symmetries in general, and flow equations and gauge symmetries in particular. The third lecture deals with the flow equation in the background formalism which is particularly convenient for analytical computations of truncated flows. The fourth lecture concentrates on the transition from microscopic to macroscopic degrees of freedom; even though this is discussed here in the language and the context of QCD, the developed formalism is much more general and will be useful also for other systems.Comment: 60 pages, 14 figures, Lectures held at the 2006 ECT* School "Renormalization Group and Effective Field Theory Approaches to Many-Body Systems", Trento, Ital