Perceived Speaking Up as a Stressor for Coworkers in a Social Network Context: A Dual Process Examination

This research proposal will explore the coworker-related outcomes of perceived employee speaking up which can be viewed as a stressor for coworkers in workplace. Within a team, voice behavior can make changes for the status quo and even upset others (LePine & Van Dyne, 1998). We want to examine how voicing may influence coworkers’ job attitude and behavior in a social network context. Specifically, this study introduces the dual process model of coping theory to employee voice behavior literature to construct longitudinal mediational mechanism underlying the relationship between perceived speaking up toward supervisor and coworker outcomes like job performance and satisfaction. Integrating with social exchange theory, this study adds coworker exchange as a moderator for the mediating effects. This quality of coworker exchange may influence coworkers to adopt different coping strategies (problem solving focused coping vs. emotion focused coping) to respond perceived speaking up toward supervisor

The role of Lactic Acid Bacteria in Gut Microbiota and Mucosal Immune System

In recent years, nutritionists and microbiologists have paid more attention to the utilization of dietary supplementation produced by natural food resources, to improve the immune system function of the human and animals. People are more willing to obtain nature supplementations due to the growing awareness of food safety, and the side effects of excessive consumption of manufactured supplements. Fermented food are introduced to provide beneficial effects on health because of the characteristics of LAB, which are temporary integrative microorganisms in the intestinal microbiota. And they could not only balance the micro-ecosystem of the host by secreting microbiome, but also enhance the beneficial properties of autonomous microorganisms. This review aims to discuss the of LAB yogurt to the gut microbiota based on recent research

Current situation and research prospect of home monitoring technology for cardiovascular system

Cardiovascular disease has become the leading cause of death in China. Home medical monitoring of cardiovascular circulatory system (cardiovascular system for short) is of great significance for the early detection, diagnosis and treatment of cardiovascular diseases. Physiological parameters of the cardiovascular system mainly include blood pressure, cardiac output, blood glucose content, blood oxygen saturation, ECG, respiration, etc. These physiological parameters need long-term daily monitoring to find the abnormalities and changes of the system. Therefore, home medical monitoring is necessary. This paper reviews the current situation of home monitoring technology for the main parameters of cardiovascular system in recent years, and prospects its future research trend

Coastal Disasters and Remote Sensing Monitoring Methods

Coastal disaster is abnormal changes caused by climate change, human activities, geological movement or natural environment changes. According to formation cause, marine disasters as storm surges, waves, Tsunami coastal erosion, sea-level rise, red tide, seawater intrusion, marine oil spill and soil salinization. Remote sensing technology has real-time and large-area advantages in promoting the monitoring and forecast ability of coastal disaster. Relative to natural disasters, ones caused by human factors are more likely to be monitored and prevented. In this paper, we use several remote sensing methods to monitor or forecast three kinds of coastal disaster cause by human factors including red tide, sea-level rise and oil spilling, and make proposals for infrastructure based on the research results. The chosen method of monitoring red tide by inversing chlorophyll-a concentration is improved OC3M Model, which is more suitable for the coastal zone and higher spatial resolution than the MODIS chlorophyll-a production. We monitor the sea-level rise in coastal zone through coastline changes without artificial modifications. The improved Lagrangian model can simulate the trajectory of oil slick efficiently. Making the infrastructure planning according the coastal disasters and features of coastline contributes to prevent coastal disaster and coastal ecosystem protection. Multi-source remote sensing data can effectively monitor and prevent coastal disaster, and provide planning advices for coastal infrastructure construction

Sodalite-like carbon based superconductors with Tc about 77 K at ambient pressure

The attainment of superconductivity at room temperature is a longstanding aspiration for both experimental and theoretical scientists. Materials exhibiting superconductivity under ambient conditions would have significant applications. Here, we report two metastable phases of sodalite-like carbon based superconductors, GaC6 and GeC6, at ambient pressure using the CALYPSO structural search method and first-principles calculations. Our calculations reveal that both GaC6 and GeC6 compounds have Im[3 with combining macron]m symmetry and are dynamically stable at ambient pressure with Tc values up to the boiling point of liquid nitrogen. The underlying mechanisms indicate that the guest Ga and Ge atoms play a dual role in enhancing the structural stability and concurrently acting as electron donors, thereby modulating the electronic properties of the C24 covalent frameworks, i.e. from insulating states to superconducting states. The present results offer insights into the exploration of novel high temperature superconductors under ambient conditions

Limitations and Challenges of MODIS-Derived Phenological Metrics Across Different Landscapes in Pan-Arctic Regions

Recent efforts have been made to monitor the seasonal metrics of plant canopy variations globally from space, using optical remote sensing. However, phenological estimations based on vegetation indices (VIs) in high-latitude regions such as the pan-Arctic remain challenging and are rarely validated. Nevertheless, pan-Arctic ecosystems are vulnerable and also crucial in the context of climate change. We reported the limitations and challenges of using MODerate-resolution Imaging Spectroradiometer (MODIS) measurements, a widely exploited set of satellite measurements, to estimate phenological transition dates in pan-Arctic regions. Four indices including normalized vegetation difference index (NDVI), enhanced vegetation index (EVI), phenology index (PI), plant phenological index (PPI) and a MODIS Land Cover Dynamics Product MCD12Q2, were evaluated and compared against eddy covariance (EC) estimates at 11 flux sites of 102 site-years during the period from 2000 to 2014. All the indices were influenced by snow cover and soil moisture during the transition dates. While relationships existed between VI-based and EC-estimated phenological transition dates, the R-2 values were generally low (0.01-0.68). Among the VIs, PPI-estimated metrics showed an inter-annual pattern that was mostly closely related to the EC-based estimations. Thus, further studies are needed to develop region-specific indices to provide more reliable estimates of phenological transition dates.Peer reviewe