Multidimensional Social Network Types and Their Correlates in Older Americans

Background and Objectives Social support networks of older adults have been linked to their health and well-being; however, findings regarding the effects of specific network characteristics have been mixed. Additionally, due to demographic shifts increasing numbers of older adults live outside of traditional family structures. Previous studies have not systematically examined the resulting complexity and heterogeneity of older adults’ social networks. Our objectives were to examine this complexity and heterogeneity by developing a multidimensional typology of social networks that simultaneously considers multiple structural and functional network characteristics, and to examine differences in network type membership by sociodemographic characteristics, health characteristics, and birth cohort. Research Design and Methods Participants included 5,192 adults aged 57–85 years in the National Social Life, Health, and Aging Project at rounds 1 (2005–2006) and 3 (2015–2016). Data were collected on social relationships including network size, diversity, frequency of contact, and perceived support and strain in relationships. We used latent class analysis to derive the network typology and multinomial logistic regression to examine differences in network type membership by sociodemographic characteristics, health characteristics, and birth cohort. Results Older adults were classified into 5 distinct social network types: (i) large, with strain; (ii) large, without strain; (iii) small, diverse, low contact; (iv) small, restricted, high contact; and (v) medium size and support. Membership in these network types varied by age, gender, marital status, race/ethnicity, education, mental health, and birth cohort. Discussion and Implications Network typologies can elucidate the varied interpersonal environments of older adults and identify individuals who lack social connectedness on multiple network dimensions and are therefore at a higher risk of social isolation.

Adjusting Structures and Procedures

State structures are constantly adjusted for resilience in a social world full of external and internal challenges. Structural shifts or reforms are comprehensively explored in the public management literature; though little is known regarding the dynamics of reforms in a developing context like Pakistan and that too from a longitudinal perspective. This research documents the key adjustments in the state structure and analyzes the changing dynamics of reform mechanisms at the federal level of Pakistan in a period of over seven decades. Both civilian and military led governments made continuous adjustments in state structures with shifting choices in reform mechanisms. With dominance of hierarchy type mechanisms over the years, the new trends in reforms around the world including market and network type mechanisms were also brought in for a resilient system. Markets and hierarchies were mostly blended in with hierarchies to create state specific reform patterns. Developing countries pick up international trends in reforms imported from West; however, the way they are influenced by the role of contextual actors (both political and non-political).

FEATURES OF PSYCHOLOGICAL CONTRACT OF LABOR SUBJECTS OF NETWORK ORGANIZATIONS

Описана актуальность исследования психологического контракта субъектов труда на современном этапе развития рынка, организации трудового процесса и управления в условиях цифровой трансформации общества, перехода многих компаний традиционного типа на интернет-платформы. Рассмотрены подходы к исследованию сетевых форм ведения бизнеса, описаны особенности организаций сетевого типа в сравнении с традиционными компаниями. Представлены результаты пилотажного, эмпирического, сравнительного исследования имплицитного соглашения субъектов труда сетевой и традиционной компаний и результатов ранних исследований компаний традиционного типа (период с 2010-го по 2019 годы) с современными данными. Рассмотрены перспективы исследования психологического контракта в организациях сетевого типа. The article describes the relevance of the study of the psychological contract of labor subjects at the present stage of market development, the organization of the labor process and management in the context of the digital transformation of society, the transition of many traditional companies to Internet platforms. Approaches to the study of network forms of doing business are considered, the features of network-type organizations in comparison with traditional companies are described. The article presents the results of a pilot, empirical, comparative study of the implicit agreement of labor subjects of network and traditional companies, and the results of early studies of companies of the traditional type (from 2010 to 2019) with modern data. The prospects for the study of the psychological contract in organizations of a network type are considered.

Experience resetting in reinforcement learning facilitates exploration–exploitation transitions during a behavioral task for primates

The exploration–exploitation trade-off is a fundamental problem in re-inforcement learning. To study the neural mechanisms involved in this problem, a target search task in which exploration and exploitation phases appear alternately is useful. Monkeys well trained in this task clearly understand that they have entered the exploratory phase and quickly acquire new experiences by resetting their previous experiences. In this study, we used a simple model to show that experience resetting in the exploratory phase improves performance rather than decreasing the greediness of action selection, and we then present a neural network-type model enabling experience resetting.

An Evolutionarily Conserved Regulatory Pathway of Muscle Mitochondrial Network Organization

Mitochondrial networks provide coordinated energy distribution throughout muscle cells. However, pathways specifying mitochondrial network-type separately from contractile fiber-type remain unclear. Here, we show that natural energetic demands placed on Drosophila melanogaster muscles yield native cell-types among which contractile and mitochondrial network-types are regulated independently. Proteomic analyses of indirect flight, jump, and leg muscles together with muscles misexpressing known fiber-type specification factor salm identified transcription factors H15 and cut as potential mitochondrial network regulators. We demonstrate H15 operates downstream of salm regulating flight muscle contractile and mitochondrial network-type. Conversely, H15 regulates mitochondrial network configuration but not contractile type in jump and leg muscles. Further, we find that cut regulates salm expression in flight muscles and mitochondrial network configuration in leg muscles. These data indicate cell type-specific regulation of muscle mitochondrial network organization separately from contractile type, mitochondrial content, and mitochondrial size through an evolutionarily conserved pathway involving cut, salm, and H15.

Transcatheter arterial embolization of iatrogenic massive arterioportal fistula in the liver

Background Massive arterioportal fistula (APF) is naturally irreversible and can induce portal hypertension and portal vein thrombosis (PVT), worsening survival outcomes. Purpose To evaluate the clinical course and details of transarterial embolization (TAE) procedures for massive APF. Material and Methods This retrospective single-center observational study evaluated the time until embolization after puncture, imaging, embolization methods, and laboratory data of 10 consecutive patients who were diagnosed with massive APF after puncture and underwent TAE at our hospital from 1 April 2012 to 30 September 2019. Results Out of 10 cases, eight demonstrated a simple type and the other two cases a complex network type on the digital subtraction angiography pattern of massive APF. In two simple-type cases for which re-embolization was required, other subsegmental branches were embolized. The two cases showing a complex network type had been embolized via not only the subsegmental branch, but also the extrahepatic and multiple subsegmental branches. Child–Pugh scores were improved in eight of the ten cases. PVT was seen in six cases before embolization, but disappeared after embolization in all cases, despite the fact that three cases had not received anticoagulant therapy. Six cases had digestive varices before embolization, suggesting portal hypertension, and two of the six cases with esophageal varices and one with gastric varices decreased after embolization. Conclusion TAE for massive APF contributed to the improvement of hepatic reserve, the disappearance of PVT, and the improvement of portal hypertension; however, embolization of multiple branches may still be required in some cases.

Association of Depression and Anxiety with Social Network Types: Results from a Community Cohort Study

Social networks protect individuals from mental health conditions of depression and anxiety. The association between each social network type and its mental health implications in the Indian population remains unclear. The study aims to determine the association of depression and anxiety with different social network types in the participants of a community cohort. We conducted a cross-sectional household survey among people aged ≥30 years in geographically defined catchment areas of Kerala, India. We used cross-culturally validated assessment tools to measure depression, anxiety and social networks. An educated male belonging to higher income quartiles, without any disability, within a family dependent network has lower odds of depression and anxiety. Furthermore, 28, 26.8, 25.7, 9.8 and 9.7% of participants belonged to private restricted, locally integrated, wider community-focused, family-dependent and locally self-contained networks, respectively. Close ties with family, neighbours, and community had significantly lower odds of anxiety and depression than private restricted networks. The clustering of people to each social network type and its associated mental health conditions can inform social network-based public health interventions to optimize positive health outcomes in the community cohort.

Traffic analysis for 5G network slice based on machine learning

With the rise of 5G and Internet of things, especially the key technology of 5G, network slice cuts a physical network into multiple virtual end-to-end networks, each of them can obtain logically independent network resources to support richer services. 5G mobile data and sensor data converge to form a growing network traffic. Traffic explosion evolved into a mixed network type, and network viruses, worms, network theft and malicious attacks are also involved. How to distinguish traffic types, block malicious traffic and make effective use of sensor data under the background of 5G network slice, and also the significance of this study.

OPERATION MANAGEMENT IN A NET-TYPE INFORMATION SYSTEM: CONCEPT INTEGRATION

The analysis of perspective directions of creation of space information systems of network-type (satellite systems which realize information transfer on the basis of the Internet technologies, and also processing and storage of the information in space) is presented. A generalized approach to the management of many tasks that implement nodes of the information system of the network type (with emphasis on a special case of application of this scheme for the space information system) is proposed. In the general scheme of task management there are two main components (task management in the network node and control of the distribution of tasks between network nodes), as well as the basic principles of their implementation. The analysis of some separate cases of realization of the named principles of management of tasks in a networks of satellite systems is carried out.

Complex Motivic Analysis

Chapter 7 establishes the rules and guidelines for complex motivic analysis (CMA). CMA is the more advanced mode of motivic analysis, which centers around the activity of a larger, network-type motive composed of elements from many domains (similar to Schoenberg’s Grundgestalt). The chapter first provides an introduction to the expanded format for motive, including guidance on which domains to include and the proper format for each. It then guides readers through construction of a complex motive for a short Brahms waltz. The remainder of the chapter is given over to describing the paired end products of CMA, which are (1) an Organic Map illustrating the most significant motivic connections in the manner of an enhanced BMA, and (2) a “Narrative” that tallies and charts the number of Complex elements exhibited by each surface segment of the work. The result of the latter process is a Narrative Curve that charts the work’s fluctuating level of organicism and directly reflects the piece’s CMA archetype. The chapter concludes with demonstration of a full CMA analysis of the Brahms waltz.