It\u27s About Time: Emphasizing Temporal Dynamics in Dynamic Personality Regulation

People change over time. These changes are thought to represent some self-regulatory, dynamic processes. However, dynamic processes need to be distinguished from mere stochastic variation. Just as the Brownian motion of a dust mote does not help us understand the basic principles of classical physics, neither does random variation within an individual describe the complexity of self-regulatory processes. This regulation implies solving the problem of competing goals and desires within the constraints of situational presses. And what people feel, think, and do at one moment affects what they feel, think and do in the next moment. Thus, describing and explaining change over time must focus on dynamics in response to environmental cues and competing internal states. That is, we must include time and change over time in our models. We will outline the constructs needed to examine time explicitly in models of personality regulation, distinguishing between those that are not inherently temporal from those that are. We will discuss how computational modeling approaches may be used to study temporal dynamics and explain personality consistency and change. We will consider different time scales and discuss how an information processing perspective may inform choices regarding time scale and corresponding contexts for empirical studies

Design of Bending Moment and Load Capacity Test for FRP Sheet Piles

Sheet piles consist of numerous interlocked segments that form temporary or permanent support walls and serve as the primary foundational component across a variety of civil infrastructural applications, such as below-grade parking structures or sea walls. The installation of sheet piles is particularly advantageous in coastal areas, as dewatering of the site is unnecessary. Steel is commonly used for sheet piles due to its strength and ease of manufacturing; however, in the presence of saltwater steel begins to rust. Contrary to steel and concrete, fiber reinforced polymer (FRP) composite sheet piles are resistant to chlorides and have considerably higher corrosion resistance. However, varying mechanical properties of FRP composite sheet piles in length and width direction as well as stress risers at the corners of the corrugations cause the soil-structure interaction to be a challenging design issue. The purpose of this study is to develop a standardized test procedure to determine moment capacity of composite sheet piles. Specifically, the moment incurred at any given point on a sheet pile is proportional to the stress experienced in conjunction(interaction) with soil pressures and a function of failure mode. Testing is conducted using an MTS actuator or winch that is connected to 1 inch diameter threaded rods centered on a wale section that is attached to the sheet pile components at its top. The pile is fixed at the bottom with a sand-concrete mixture of ~70 psi compressive strength (shear strength of ~35 psi) that extends to a height of 3 feet, while the free-standing section of the sheet pile extends an additional 10 feet above mud line. Strain gages and LVDTs are installed strategically on pile surface at both the above and below mud line to monitor its condition during testing and to collect data to establish load vs strain response. This report concludes that failure occurs along the weak axis of the sheet pile when flexural stress is incurred on the test specimen. A net pressure distribution diagram is created using strain data obtained in laboratory testing and compared with diagrams shown in literature. The diagrams indicate pressure along the depth of the sheet pile, which is used to determine the bending moment. Several sheet piles have been tested with consistent results that correlate well with theoretical sheet pile design calculations. The results from each test were also compared with field test data and are found to correlate well. Results from this study suggest that this test can become a useful resource for engineers and will assist in designing the most economically feasible and structurally efficient sheet pile structure. The test procedure developed herein will be a basis to propose ASTM test procedure to establish load capacity of sheet piles as a function of soil properties and embedment length

Velocity Explains the Links between Personality States and Affect

The present research examined whether perceived rate of progress toward a goal (velocity) mediated the relationships between personality states and affective states. Drawing from control theories of self-regulation, we hypothesized (i) that increased velocity would mediate the association between state extraversion and state positive affect, and (ii) that decreased velocity would mediate the association between state neuroticism and state negative affect. We tested these hypotheses in 2 experience sampling methodology studies that each spanned 2 weeks. Multilevel modeling analyses showed support for each of the bivariate links in our model, and multilevel path analyses supported our mediation hypotheses. We discuss implications for understanding the relations between personality states and affective states, control theories of self-regulation, and goal striving

Finding a Life Worth Living: Meaning in Life and Graduation from College

Graduation from college is an important milestone for young adults, marked by mixed emotions and poignancy, and therefore is an especially salient context for studying meaning in life. The present research used experience-sampling methodology to examine the antecedents and consequences of students' experience of meaning in life over the course of graduation. Participants were 74 graduating students who provided a total of 538 reports over the span of three days, including commencement day. Increased levels of state meaning in life during the days around commencement were linked to spending time with people in general and with family in particular, as well as thinking about one's years in college. Thinking about one's years in college mediated the effects of present company on state meaning in life. Graduates who experienced higher levels of state meaning in life during the days around their commencement ceremony had higher trait levels of meaning in life one week following commencement. We discuss how making meaning of a poignant experience has implications for healthy psychological development

Platelet activation in the postoperative period after lung transplantation

Objective During lung transplantation, cells in the pulmonary parenchyma are subjected to ischemia, hypothermic storage, and reperfusion injury. Platelets, whose granular contents include adhesion receptors, chemokines, and coactivating substances that activate inflammatory and coagulant cascades, likely play a critical role in the lung allograft response to ischemia and reperfusion. The platelet response to the pulmonary allograft, however, has never been studied. Here we report significant platelet activation immediately after lung transplantation. Methods We performed a prospective cohort study comparing markers of platelet activation in patients undergoing lung transplantation and patients undergoing nontransplant thoracotomy. Plasma levels of soluble P-selectin, soluble CD40 ligand, and platelet–leukocyte conjugates were measured before surgery, after skin closure, and at 6 postoperative hours. Results Both soluble P-selectin and soluble CD40 ligand levels increased significantly after lung transplantation but not after thoracotomy. Additionally, platelet–monocyte conjugate fluorescence was significantly higher after lung transplantation than after thoracotomy alone. Conclusion These findings suggest that platelet activation is significantly increased after lung transplantation beyond that expected from the postoperative state. The increase in circulating platelet–monocyte conjugates suggests an important interaction between platelets and inflammatory cells. Further research should examine whether platelet activation affects early graft function after lung transplantation

Proceedings of the Eighth Annual Deep Brain Stimulation Think Tank: Advances in Optogenetics, Ethical Issues Affecting DBS Research, Neuromodulatory Approaches for Depression, Adaptive Neurostimulation, and Emerging DBS Technologies

We estimate that 208,000 deep brain stimulation (DBS) devices have been implanted to address neurological and neuropsychiatric disorders worldwide. DBS Think Tank presenters pooled data and determined that DBS expanded in its scope and has been applied to multiple brain disorders in an effort to modulate neural circuitry. The DBS Think Tank was founded in 2012 providing a space where clinicians, engineers, researchers from industry and academia discuss current and emerging DBS technologies and logistical and ethical issues facing the field. The emphasis is on cutting edge research and collaboration aimed to advance the DBS field. The Eighth Annual DBS Think Tank was held virtually on September 1 and 2, 2020 (Zoom Video Communications) due to restrictions related to the COVID-19 pandemic. The meeting focused on advances in: (1) optogenetics as a tool for comprehending neurobiology of diseases and on optogenetically-inspired DBS, (2) cutting edge of emerging DBS technologies, (3) ethical issues affecting DBS research and access to care, (4) neuromodulatory approaches for depression, (5) advancing novel hardware, software and imaging methodologies, (6) use of neurophysiological signals in adaptive neurostimulation, and (7) use of more advanced technologies to improve DBS clinical outcomes. There were 178 attendees who participated in a DBS Think Tank survey, which revealed the expansion of DBS into several indications such as obesity, post-traumatic stress disorder, addiction and Alzheimer’s disease. This proceedings summarizes the advances discussed at the Eighth Annual DBS Think Tank