Reentry Process Research Articles

Building Bridges: Exploring Support Systems of Justice-Involved Individuals

Having access to a person who encourages prosocial behavior and discourages antisocial behavior for justice-involved individuals is a key factor in the reentry process. The gender-responsive literature suggests that social support is an especially salient factor for justice-involved women. However, limited research has examined positive support person’s willingness to become involved in the reentry process. Using a sample of 179 justice-involved men and women enrolled in a reentry program designed to train support persons in rehabilitative skills, the current study aims to examine the willingness of support persons of justice-involved individuals to attend a reentry program. The findings demonstrated that less than half of justice-involved individuals had support persons participate in the program. Furthermore, women were significantly less likely to have support persons attend the reentry program than men. The implications of these findings for reentry and the gender-responsive framework are discussed.

Large Debris Removal: Using Features of Attitude Motion for Load Factor Regulation during Re-Entry

This paper focuses on the active removal of spent upper stages from LEO using de-orbiting devices. It proposes a method of regulating aerodynamic loads on the target during its re-entry by utilizing the features of spatial attitude motion. A mathematical model of the re-entry process is developed, and numerical simulations are conducted, demonstrating that the nature of the attitude motion during the descent influences the load factors and, thus, the breakup altitude. It is shown that the respective de-orbiting devices should control both the initial tumbling and spin of the target to achieve different mission outcomes, such as minimizing the debris footprint size or maximizing the breakup altitude.

Secular dynamics and the lifetimes of lunar artificial satellites under natural force-driven orbital evolution

In this paper, we study the long-term (time scale of several years) orbital evolution of lunar satellites under the sole action of natural forces. In particular, we focus on secular resonances, caused either by the influence of the multipole moments of the lunar potential and/or by the Earth’s and Sun’s third-body effect on the satellite’s long-term orbital evolution. Our study is based on a simplified secular model obtained in ‘closed form’, i.e., without expansions in the satellite’s orbital eccentricity. Contrary to the case of artificial Earth satellites, in which many secular resonances compete in dynamical impact, we give numerical evidence that for lunar satellites only the 2g−resonance (ω̇=0) affects significantly the orbits at secular timescales. We interpret this as a consequence of the strong effect of lunar mascons. We show that the lifetime of lunar satellites is, in particular, nearly exclusively dictated by the 2g resonance. By deriving a simple analytic model, we propose a theoretical framework which allows for both qualitative and quantitative interpretation of the structures seen in numerically obtained lifetime maps. This involves explaining the main mechanisms driving eccentricity growth in the orbits of lunar satellites. In fact, we argue that the re-entry process for lunar satellites is not necessarily a chaotic process (as is the case for Earth satellites), but rather due to a sequence of bifurcations leading to a dramatic variation in the structure of the separatrices in the 2g resonance’s phase portrait, as we move from the lowest to the highest limit in inclination (at each altitude) where the 2g resonance is manifested.

How does a subsequent entrepreneurship career choice develop? A set-theoretic analysis testing hope theory

ABSTRACT This research explores the complex mechanism leading to a subsequent entrepreneurship career choice (SECC), whether perceived as a failure or not. It mobilizes the theory of hope (via the role of optimism and grit) and the components of the theory of planned behavior (attitude, subjective norms, and self-efficacy). The study involved 48 previous entrepreneurs not currently in the reentry process. A fuzzy-set qualitative comparative analysis was used. Results reveal that the entrepreneurial attitude forged through first-hand experience is the most critical element in understanding an SECC. Optimism can substitute for this attitude, and grit plays a lesser role, as do the other variables. This study underscores the central role of attitude and optimism in explaining entrepreneurial career persistence, transitioning from a novice to a serial entrepreneur, with grit playing a somewhat secondary role. Configurational approaches prove essential to understanding entrepreneurial intention, notably for an SECC.

Unraveling the binding problem in working memory: insights from the hierarchical binding model.

The binding problem is a crucial issue in the study of working memory (WM) and remains a central topic of debate among various WM models. Over the past decade, we have explored feature binding within WM, guided by the Hierarchical Binding Model (HBM). This model suggests that WM binding occurs in two stages: an initial implicit binding involving rapid, coarse feature processing, followed by explicit binding where focused attention refines these features via a reentry process. We found that implicit binding is closely related to the attentional processing of features during the perceptual stage. Basic features that can be rapidly and coarsely processed in parallel through spread attention are involuntarily extracted into WM along with the target features, forming a rough bound representation. For explicit binding, we examined the role of attention in retaining explicit binding in WM, emphasizing the unique role of reentry in the HBM. Our findings indicate that WM binding requires additional object attention through the reentry process. These results demonstrate that both implicit and explicit bindings are integral to WM and that the HBM is effective in elucidating the binding mechanisms within WM.

Thermal insulating performance of thermal protection system with sandwich structure based on Al2O3/SiC composites aerogels

The thermal protection system (TPS) are an indispensable component of aerospace vehicles that can withstand harsh aerothermal conditions during the reentry process. Recently, the sandwich structures of TPS have been widely used to meet the development trend of structure-performance integrated design. In this study, a TPS with a sandwich structure based on Al2O3 aerogels reinforced by SiC nanowire are proposed. The Al2O3/SiC composites aerogels are synthesized via the low-cost method, including sol-gel, freeze-casting and high-temperature treatments processes. The microstructure, phase composition, thermal insulation and compressive resistance of composite aerogels at different SiC nanowires content are investigated in detail. The resulting Al2O3/SiC composites aerogels, exhibiting better compressive strength and thermal stability with the increase of SiC nanowires content, achieve the purpose of being an excellent thermal insulation material of TPS at high temperature. The characterization of thermal insulating performances of the TPS are also evaluated by the oxyacetylene torch testing. The TPS shows extraordinary high-temperature resistance, and the average linear ablation rate and mass ablation rate are 0.0032 mm/s and 0.005 g/s, respectively, which can satisfy the requirement of TPS for aerospace vehicles under ultra-high temperature conditions.

A Multifidelity Framework for Aerothermodynamic Modeling and Simulation of Destructive Atmospheric Entry

The aerothermodynamic environment surrounding bodies undergoing destructive atmospheric entry is characterized by multiple interacting shock waves generated by the presence of several fragments moving close to one another at high speed. Shock interaction and impingement produce highly localized surface loads, influencing the overall dynamics of the fragment, its temperature, and in turn its demise. To account for the relevant physics during the reentry process of fragmenting bodies, a multifidelity framework is presented that allows for selecting the most appropriate level of fidelity, between high-fidelity solutions or low-fidelity aerothermodynamic metamodels. A physics-informed approach is implemented to automatically choose between the two fidelity levels on the basis of the intersection of shock wave envelopes. The complete framework is validated on relevant test cases from the literature and its performance is demonstrated for destructive atmospheric reentry cases, such as the case of the Attitude Vernier Upper Module and the Automated Transfer Vehicle from the European Space Agency.

A composite planning method considering avoidance of multiple no-fly zones

Aiming at the problem that multiple no-fly zones need to be avoided in the reentry process of aircraft, a composite programming method combining conjugate gradient and dynamic programming is proposed. The method divides the reentry flight trajectory into two parts: the longitudinal plane and the transverse plane. The longitudinal plane uses the conjugate gradient method to guide the aircraft to meet the minimum mass of the thermal protection system during the whole flight. The horizontal plane mainly uses the dynamic programming method to obtain a reasonable obstacle avoidance route and inversely calculates the change law of the heading angle. The simulation results show that the three-dimensional reentry trajectory can reasonably solve the problem of avoiding multiple no-fly zones and meeting the aerodynamic constraints of the flight process.

Reentry trajectory optimization of hypersonic glide vehicle based on improved particle swarm algorithm

The reentry process of hypersonic glide vehicle presents a host of intricate constraint issues. A method for optimizing the reentry trajectory of hypersonic glide vehicle is presented to achieve the shortest possible reentry time. The approach utilizes the improved particle swarm optimization (IPSO) algorithm. Firstly, population initialization is performed using the quasi-oppositional differential evolution (QODE) strategy to promote diversity within the population. Then an adaptive adjustment algorithm is designed for the inertia weight coefficient and learning factor to achieve a balance between global and local search capabilities. Finally, utilizing the IPSO algorithm for optimizing the flight parameters of the reentry trajectory, the reentry time is reduced from 338 seconds to 335 seconds. The simulations results indicate that the IPSO algorithm outperforms both the standard PSO algorithm and genetic algorithm (GA) in terms of optimization performance index.

Navigating the emotional terrain of prison reentry: State‐sanctioned gendered violence

AbstractThe emotional experiences of incarceration are directly tied to state‐sanctioned gendered violence. Most incarcerated women have a history of trauma, stemming directly from broader socio‐political and economic forces, which is further rendered throughout the incarceration and reentry process. The carceral system in the United States disrupts family and social support systems, fails to provide accessible and adequate mental health and substance use services, and denies stabilization resources such as housing, employment, and citizenry for women once released from prison, yet their emotional experiences are largely absent in analyses of this gendered violence. Drawing from a larger intimate ethnography project with a woman, LaTasha, recently released from a 25‐year to life prison sentence, this article examines how women negotiate and express emotions within the context of prison reentry contributing to feminist anthropological scholarship on state‐sanctioned gender violence. Through an in‐depth analysis of the challenges LaTasha faces in rebuilding relationships with family, navigating a system in which she has been outcasted, and asserting herself after being systematically disempowered, we gain insight into the ways in which carceral systems have prevented emotional complexity resulting in a form of incipient and largely invisible violence.

Experimental study on a rectangular evaporator loop heat pipe with a phase-change material heat sink

To satisfy the heat dissipation requirements of high heat flux electronic devices in extreme conditions where no suitable heat sink exists, such as in the flight process of hypersonic aircraft and the re-entry process of spacecraft, a rectangular evaporator loop heat pipe (LHP) with a phase-change material heat sink was designed and developed. Extensive experimental studies on the thermal control performance of the LHP have been performed, mainly including the startup performance, maximum temperature control time, dynamic response to varying heat load, and the heat transfer limit. Experimental results showed that the LHP could successfully realize the startup at a small heat load as low as 5 W. Under 100 W heat load, the LHP can keep operating for 4 h and 16 min at most with the operating temperature lower than 50 °C, including 2 h and 40 min of quasi-stable operation. The heat transfer limit of the LHP could reach up to 200 W, corresponding to a heat flux of 13.3 W/cm2 at the evaporator. In addition, the LHP exhibited excellent dynamic response characteristics to varying heat loads, holding great application potential in future thermal control tasks in extreme conditions.

Qualitative Analysis of School Re-Entry Experiences of Turkish Survivors of Childhood and Adolescent Cancer: Parental Perspective

This study aimed to explore the school re-entry experiences of Turkish survivors of childhood and adolescent cancer. In this qualitative study, semistructured in-depth interviews were undertaken with parents of childhood cancer survivors who had completed treatment for at least 2 years (n = 20). Interviews were conducted via telephone or video conferencing. The study was conducted and reported according to the COREQ (Consolidated Criteria for Reporting Qualitative Research) guidelines. The components of qualitative rigor were considered to ensure confidence in the methods and data. The average age of parents was 43.20 ± 4.66 years (range 37-55) (n = 20). The mean age of survivors was 8.45 ± 2.03 years at diagnosis and 15.05 ± 2.08 years during the study. The diagnosis of most of the survivors was lymphoma (35%). Four main themes were developed: worry; challenging situations; negative effects of the disease process; and facilitating situations. Parents stated that both children and parents need support during the school re-entry process. This study revealed that survivors may experience problems that make school re-entry difficult. With cooperation between the health team and the school, arrangements should be made to ensure survivors have a positive experience on school re-entry. Pediatric oncology nurses should know survivors' requirements and take action to deliver school re-entry adjustment programs.

Multiscale Interpenetrated/Interconnected Network Design Confers All-Carbon Aerogels with Unprecedented Thermomechanical Properties for Thermal Insulation under Extreme Environments.

With ultralight weight, low thermal conductivity, and extraordinary high-temperature resistance, carbon aerogels hold tremendous potential against severe thermal threats encountered by hypersonic vehicles during the in-orbit operation and re-entry process. However, current 3D aerogels are plagued by irreconcilable contradictions between adiabatic and mechanical performance due to monotonicity of the building blocks or uncontrollable assembly behavior. Herein, a spatially confined assembly strategy of multiscale low-dimensional nanocarbons is reported to decouple the stress and heat transfer. The nanofiber framework, a basis for transferring the loading strain, is covered by a continuous thin-film-like layer formed by the aggregation of nanoparticles, which in combination serve as the fundamental structural units for generating an elastic behavior while yielding compartments in aerogels to suppress the gaseous fluid thermal diffusion within distinct partitions. The resulting all-carbon aerogels with a hierarchical cellular structure and quasi-closed cell walls achieve the best thermomechanical and insulation trade-off, exhibiting flyweight density (24mg cm-3 ), temperature-constant compressibility (-196-1600 °C), and a low thermal conductivity of 0.04829W m-1 K-1 at 300 °C. This strategy provides a remarkable thermal protection material in hostile environments for future aerospace exploration.

Intelligent Control Systems for Autonomous Re-entry and Landing of Reusable Rockets

The project requires integration of cutting-edge technologies such as sensor integration, trajectory planning, control system, and safety measures to ensure safe and exact landing. The research presents a development and application of intelligent control system for autonomous re-entry and landing that is specifically created for reusable rocket. The primary goal of our research is to develop an intelligent control system that can autonomously guide reusable rocket through the challenging process of re-entering the atmosphere and landing. Advance sensor integration is essential for gathering real-time data from various sensors and enabling the control system to make decisions during crucial descent stages. In order to lessen risk to the rocket and its payload, it also covers trajectory planning, which optimizes the flight route to assure precision upon landing. Safety is the first priority throughout the project, with strong safety measures being implemented to reduce potential risk and assure protection. An intelligent control system that has been designed and built can autonomously direct a reusable rocket through the difficult re-entry and landing process. This work offers a reliable and efficient method for the autonomous re-entry and landing of reusable rockets, making a substantial addition to the field of rocketry. By running efficiently and sustainably, the intelligent control system created here has the potential to revolutionize the space sector.

Unlocking the Key to Accelerating Convergence in the Discrete Velocity Method for Flows in the Near Continuous/Continuous Flow Regimes.

How to improve the computational efficiency of flow field simulations around irregular objects in near-continuum and continuum flow regimes has always been a challenge in the aerospace re-entry process. The discrete velocity method (DVM) is a commonly used algorithm for the discretized solutions of the Boltzmann-BGK model equation. However, the discretization of both physical and molecular velocity spaces in DVM can result in significant computational costs. This paper focuses on unlocking the key to accelerate the convergence in DVM calculations, thereby reducing the computational burden. Three versions of DVM are investigated: the semi-implicit DVM (DVM-I), fully implicit DVM (DVM-II), and fully implicit DVM with an inner iteration of the macroscopic governing equation (DVM-III). In order to achieve full implicit discretization of the collision term in the Boltzmann-BGK equation, it is necessary to solve the corresponding macroscopic governing equation in DVM-II and DVM-III. In DVM-III, an inner iterative process of the macroscopic governing equation is employed between two adjacent DVM steps, enabling a more accurate prediction of the equilibrium state for the full implicit discretization of the collision term. Fortunately, the computational cost of solving the macroscopic governing equation is significantly lower than that of the Boltzmann-BGK equation. This is primarily due to the smaller number of conservative variables in the macroscopic governing equation compared to the discrete velocity distribution functions in the Boltzmann-BGK equation. Our findings demonstrate that the fully implicit discretization of the collision term in the Boltzmann-BGK equation can accelerate DVM calculations by one order of magnitude in continuum and near-continuum flow regimes. Furthermore, the introduction of the inner iteration of the macroscopic governing equation provides an additional 1-2 orders of magnitude acceleration. Such advancements hold promise in providing a computational approach for simulating flows around irregular objects in near-space environments.

How Far does Prison Punishment Extend? Re-entry Processes in the Digitalised Society

This article questions how far punishment extends in a digitalised society, focusing on the complexities in relation to prison release and re-entry processes for people who have served a long prison sentence. Drawing on Gilles Deleuze’s concept of “societies of control” and Nils Christie’s concepts of “dense and loose societies,” the article discusses re-entry within the context of the Norwegian digitalised society. Through person-centred, multi-site fieldwork, the analysis identifies three types of complexities regarding re-entry processes. The first is how small and unforeseen events can reset the time of release from prison. The second is how digital gatekeepers in public welfare services create obstacles in the re-entry process. The third is how the possibility of online tracking and monitoring provides new forms of social control and pain after release, which creates an environment where a person’s criminal past affects his or her everyday life. This article challenges binary scientific understandings between the inside and the outside of prison and provides insights into the processes of how digital punishment and new forms of control occur in digitalised society. In this way, the article analytically contributes to the discussion of how the normative demand of being a free person after completing sentences in Norwegian criminal policy has been further complicated in a digitalised society.

Effectiveness of the Autonomous Braking and Evasive Steering System OPREVU-AES in Simulated Vehicle-to-Pedestrian Collisions

This paper proposes a combined system (OPREVU-AES) that integrates optimized AEB and Automatic Emergency Steering (AES) to generate evasive maneuvers, and it provides an assessment of its effectiveness when compared to a commercial AEB system. The optimized AEB system regulates the braking response through a collision prediction model. OPREVU is a research project in which INSIA-UPM and CEDINT-UPM cooperate to improve driving assistance systems and to characterize pedestrians’ behavior through virtual reality (VR) techniques. The kinematic and dynamic analysis of OPREVU-AES is conducted using CarSim© software v2020.1. The avoidance trajectories are predefined for speeds above 40 km/h, which controls the speed and lateral stability during the overtaking and lane re-entry process. In addition, the decision algorithm integrates information from the lane and the blind spot detectors. The effectiveness evaluation is based on the reconstruction of a sample of vehicle-to-pedestrian crashes (INSIA-UPM database), using PCCrash© software v. 2013, and it considers the probability of head injury severity (ISP) as an indicator. The incorporation of AEB can avoid 53.8% of accidents, with an additional 2.5–3.5% avoided by incorporating automatic steering. By increasing the lateral activation range, the total avoidance rate is increased to 61.8–69.8%. The average ISP reduction is 65%, with significant reductions achieved in most cases where avoidance is not possible.

Analysis of the reentry status of blood donors with reactive bloodborne pathogen screening markers in Hangzhou City

Objective: To explore the reentry rate of reactive blood donors in the bloodborne pathogen infection screening in Hangzhou City, and analyze the donation behavior of those who successfully returned. Methods: A retrospective analysis of the return data of blood donors with reactive bloodborne pathogen screening markers was conducted at Zhejiang Provincial Blood Center from June 2017 to May 2022. The reentry process for blood donors with reactive bloodborne pathogen screening markers in Hangzhou City is as follows: after the initial screening period of 6 months, donors can voluntarily apply for return to the blood center. Samples are collected and subjected to routine enzyme-linked immunosorbent assay (ELISA) screening for HBsAg, anti-HCV, HIV Ab/Ag, and anti-TP, as well as a single nucleic acid (HIV/HCV/HBV) test. For samples that show non-reactivity in both ELISA and nucleic acid tests, serum biomarker testing for the reasons of exclusion is performed using chemiluminescence immunoassay (CLIA), and those with non-reactivity are allowed to return. Results: A total of 4 583 reactive blood donors who met the criteria for re-entry applied for reentry, out of which 475 applications were received from donors in the Hangzhou area. Among these, 279 donors were successfully readmitted, resulting in a success rate of 58.74% (279/475). By the end of December 2021, out of the 174 donors who successfully returned, 114 donors chose to donate again. They collectively donated 39 530 ml of whole blood and 1 147.2 therapeutic doses of platelets. Among these, 21 donors once again showed reactivity for pathogen infection biomarkers, accounting for 18.42% (21/114). Conclusion: The reentry strategy has somewhat mitigated the attrition of blood donors. Nevertheless, there are instances where donors who were successfully readmitted show reactivity once more in the screening for pathogen infection biomarkers.

Nuances of fragmentation, (mis)recognition and closeness: Narratives of challenges and support during resettlement

The transition from prison to society tends to be tough and painful for people in resettlement and challenging to facilitate for professionals. The Norwegian Correctional Services aim for a continuous reentry focus throughout the prison sentence. Norway has been presented as one of the Nordic exceptional penal states, partly based on ‘the encouraging pattern of officer-inmate interactions’. However, this exceptional picture has been criticized for paying more attention to discourse than to lived experiences. As newly released persons’ experiences of interaction and relationships with staff and of how these facilitate and frustrate their reentry processes have largely been ignored, this article draws attention to their perspectives. Inspired by narrative analysis, in cooperation with persons with lived experience, we constructed three stories of challenges and support during resettlement. Through these in-depth presentations of frustrating misrecognition, ignorance and fragmentation, but also of closeness, continuity, recognition, belonging and de-stigmatization, this study provides important insights into how interaction and relationships with staff enable and constrain reentry to society. By bringing lived experience into the discourse of Nordic exceptionalism, this article adds valuable perspectives to this still ongoing debate. Overall, we argue for a revitalization of the primary officer role and a broader approach to resettlement to facilitate support throughout the prison sentence.

Attitudes and practices of specialty physicians regarding the return to school process after pediatric acquired brain injury.

More than 50,000 children are hospitalized yearly in the U.S. for acquired brain injury (ABI) with no established standards or protocols for school re-entry and limited resources for hospital-school communication. While ultimately the school has autonomy over curricula and services, specialty physicians were asked about their participation and perception of barriers in the school re-entry process. Approximately 545 specialty physicians were sent an electronic survey. 84 responses (43% neurologists and 37% physiatrists) were obtained with a response rate of ∼15%. Thirty-five percent reported that specialty clinicians currently make the plan for school re-entry. The biggest challenge for school re-entry noted by physicians was cognitive difficulties (63%). The biggest gaps perceived by physicians were a lack of hospital-school liaisons to help design and implement a school re-entry plan (27%), schools' inability to implement a school re-entry plan (26%), and an evidence-based cognitive rehab curriculum (26%). Forty-seven percent of physicians reported that they did not have adequate medical personnel to support school re-entry. The most commonly used outcome measure was family satisfaction. Ideal outcome measures included satisfaction (33%) and formal assessment of quality of life (26%). These data suggest that specialty physicians identify a lack of school liaisons in the medical setting as an important gap in hospital-school communication. Satisfaction and formal assessment of quality of life are meaningful outcomes for this provider group.