High-harmonic spin-shearing interferometry for spatially resolved EUV magneto-optical spectroscopy.

We present a method for achieving hyperspectral magnetic imaging in the extreme ultraviolet (EUV) region based on high-harmonic generation (HHG). By interfering two mutually coherent orthogonally-polarized and laterally-sheared HHG sources, we create an EUV illumination beam with spatially-dependent ellipticity. By placing a magnetic sample in the beamline and sweeping the relative time delay between the two sources, we record a spatially resolved interferogram that is sensitive to the EUV magnetic circular dichroism of the sample. This image contains the spatially-resolved magneto-optical response of the sample at each harmonic order, and can be used to measure the magnetic properties of spatially inhomogeneous magnetic samples.

Comparing child and adult sexual homicides in Australia and New Zealand: A retrospective study.

The present study examined distinctions between child (n = 30) and adult (n = 212) sexual homicide offenders (SHOs) in Australia and New Zealand, contributing to the limited international research on the subject. Data, primarily sourced from judges' sentencing comments on AustLII and New Zealand Legal Information Institute, revealed significant differences. Child SHOs displayed elevated rates of pedophilia, sexual deviance, and adverse childhood experiences, including sexual abuse. They were more likely to be married, cohabitate, and target familial victims. Their crimes were more often committed during daylight and outdoors, involving tactics such as victim conning, restraints, strangulation, and hiding victim's bodies. No significant group differences emerged regarding offenders' psychopathy or sexual sadism scores. Results were interpreted in line with child SHOs' deviant sexual preferences and the routine activity theory. The study, as the first investigating child sexual homicides in Australia and New Zealand, sets the foundation for an evidence-based approach to policy and practice.

A mixed methods experience sampling study of a posttraumatic growth model for addiction recovery.

Problematic substance use and addiction is a growing crisis in the United States. As a result, identifying factors that effectively promote addiction recovery is, currently, of particular societal importance. Informed by evidence that-while addiction can be perpetuated by stress-related impulsivity and decreased self-regulation-perceived social support is protective against addiction, we test a model for addiction recovery as a form of posttraumatic growth (PTG), focused specifically on close relationships and personal strength-two domains of PTG. In an initial study, we found that perceived social support and impulsivity predicted number of relapses in individuals in a substance use disorder recovery program. Using experience sampling, we then observed that experiencing a stressful event predicted impulsive behavior. However, experiencing closeness with others-a domain of PTG-was directly associated with perceived social support, and both predicted positive emotional states, which were, in turn, inversely associated with experiencing a stressful event. Further, when experiencing a stressful event, personal strength-also a domain of PTG-was inversely associated with impulsive behavior and was predicted by both perceived social support and positive emotional states. Finally, in a follow-up experiment, we found that an ecological momentary intervention targeting perceived social support decreased impulsivity and increased self-regulation-an aspect of personal strength-in a dose-dependent fashion. Taken together, our findings: (1) support a PTG model for recovery; (2) provide evidence for processes by which close supportive relationships are protective against addiction and relapse; and (3) indicate that self-regulation is responsive to a short in-the-moment perceived social support intervention. We suggest that these findings support the theory that addiction is a social disease in the sense that close personal interactions and supportive relationships: (a) buffer against stress-related impulsivity, thereby protecting against addiction and relapse; and (b) increase personal strength, thereby decreasing the probability of impulsive-including addictive-behavior and promoting recovery.

Direct Observation of Enhanced Electron-Phonon Coupling in Copper Nanoparticles in the Warm-Dense Matter Regime.

Warm dense matter (WDM) represents a highly excited state that lies at the intersection of solids, plasmas, and liquids and that cannot be described by equilibrium theories. The transient nature of this state when created in a laboratory, as well as the difficulties in probing the strongly coupled interactions between the electrons and the ions, make it challenging to develop a complete understanding of matter in this regime. In this work, by exciting isolated ∼8 nm copper nanoparticles with a femtosecond laser below the ablation threshold, we create uniformly excited WDM. Using photoelectron spectroscopy, we measure the instantaneous electron temperature and extract the electron-ion coupling of the nanoparticle as it undergoes a solid-to-WDM phase transition. By comparing with state-of-the-art theories, we confirm that the superheated nanoparticles lie at the boundary between hot solids and plasmas, with associated strong electron-ion coupling. This is evidenced both by a fast energy loss of electrons to ions, and a strong modulation of the electron temperature induced by strong acoustic breathing modes that change the nanoparticle volume. This work demonstrates a new route for experimental exploration of the exotic properties of WDM.

Repeat Transurethral Resection of Muscle-invasive Bladder Cancer Prior to Radical Cystectomy is Prognostic but Not Therapeutic.

PURPOSE: We sought to evaluate the impact of repeat transurethral resection of bladder tumor prior to radical cystectomy on oncologic outcomes in a contemporary cohort at a tertiary care center. MATERIALS AND METHODS: An Institutional Review Board approved review of 657 patients diagnosed with muscle-invasive bladder cancer who underwent radical cystectomy at our institution for clinical stage T2 urothelial carcinoma between 2005 and 2017 was performed. Patients with and without repeat transurethral resection of bladder tumor were matched 1-to-1 by propensity score. Matching was done by age, gender, receipt of neoadjuvant chemotherapy, preoperative hydronephrosis, variant histology, lymphovascular invasion, or carcinoma in situ on index transurethral resection of bladder tumor. RESULTS: A total of 548 patients with muscle-invasive bladder cancer were included after matching (2 groups of 274 patients). Kaplan-Meier estimates of recurrence-free and overall survival demonstrated no significant difference based upon performance of repeat transurethral resection of bladder tumor (P = 1.0 and P = .3, respectively). When outcomes were stratified by pathology of repeat transurethral resection of bladder tumor specimens, those with pT0 had superior recurrence-free and overall survival compared to those with residual muscle invasive disease (P < .001 and P = .001, respectively). Notably, more than 60% of patients who were pT0 on repeat transurethral resection of bladder tumor had residual disease at the time of radical cystectomy. CONCLUSIONS: Repeat transurethral resection of bladder tumor prior to radical cystectomy, irrespective of receipt of neoadjuvant chemotherapy, was not associated with improved survival outcomes in this propensity score matched muscle-invasive bladder cancer cohort. The absence of residual tumor on pathological evaluation of repeat transurethral resection of bladder tumor specimen was prognostic and was associated with improved survival outcomes. However, a large percentage of patients with pT0 disease on repeat transurethral resection of bladder tumor had residual disease on radical cystectomy pathology.

Operational psychology and cold case investigations in New Zealand.

Purpose: The purpose of this paper is to examine the application of psychology to the investigation of cold cases. The paper reviews the development of the discipline of operational psychology and reviews the role of the Behavioural Science Unit in assisting with cold case investigations within New Zealand. Design/methodology/approach: The paper integrates theory, academic principles, and practical investigative experience. Findings: As a field, operational psychology has a wide application to cold case investigations. The main areas where expertise can be provided, includes, indirect assessment and personality profiles, offender profiling, crime analysis, victimology and equivocal death analysis, and in the interviewing and engagement of offenders. Operational psychology advice should be based upon sound reasoning, evidenced based conclusion, and within the bounds of practitioner competence. Psychologists should seek to educate investigators on probabilities, likelihoods and error rates, and endeavour to indicate the strength of conclusions and statements provided within a report. Originality/value: The review aims to provide the necessary and relevant impetus for integrating operational, or forensic psychology expertise into cold case investigations. The application of psychological science to police investigations has been subject to numerous academic commentaries, however, there is a dearth of involvement from practitioners practicing in the field.

High-resolution, wavefront-sensing, full-field polarimetry of arbitrary beams using phase retrieval.

Recent advances in structured illumination are enabling a wide range of applications from imaging to metrology, which can benefit from advanced beam characterization techniques. Solving uniquely for the spatial distribution of polarization in a beam typically involves the use of two or more polarization optics, such as a polarizer and a waveplate, which is prohibitive for some wavelengths outside of the visible spectrum. We demonstrate a technique that circumvents the use of a waveplate by exploiting extended Gerchberg-Saxton phase retrieval to extract the phase. The technique enables high-resolution, wavefront-sensing, full-field polarimetry capable of solving for both simple and exotic polarization states, and moreover, is extensible to shorter wavelength light.

Temporal and spectral multiplexing for EUV multibeam ptychography with a high harmonic light source.

We demonstrate temporally multiplexed multibeam ptychography implemented for the first time in the EUV, by using a high harmonic based light source. This allows for simultaneous imaging of different sample areas, or of the same area at different times or incidence angles. Furthermore, we show that this technique is compatible with wavelength multiplexing for multibeam spectroscopic imaging, taking full advantage of the temporal and spectral characteristics of high harmonic light sources. This technique enables increased data throughput using a simple experimental implementation and with high photon efficiency.

Fixated and grievance-fuelled persons: considerations on the dangers of gaps, silos and disconnects.

To prevent and mitigate fixated and grievance-fuelled violence, law enforcement has moved towards collaborative policing that seeks to identify and gather information for early and timely responses. At the centrepiece of prevention efforts is the reliance on the identification of risk indicators or warning behaviours. These behaviours are often considered to represent pre-attack signals or accelerating patterns towards violence. However, there remain many challenges to detecting early risk indicators particularly in relation to the processes of information sharing. The current review examines warning behaviour amongst fixated and grievance-fuelled persons, reviewing the myriad of issues that have persisted from the Columbine School Shootings through to the Lindt Café Siege. The analysis considers the challenges that are facing police in seeking to detect and respond to early warning behaviours; specifically examining how gaps, silos and disconnects can inhibit detection and prevention efforts.

Single-Frame Characterization of Ultrafast Pulses with Spatiotemporal Orbital Angular Momentum.

Light that carries spatiotemporal orbital angular momentum (ST-OAM) makes possible new types of optical vortices arising from transverse OAM. ST-OAM pulses exhibit novel properties during propagation, transmission, refraction, diffraction, and nonlinear conversion, attracting growing experimental and theoretical interest and studies. However, one major challenge is the lack of a simple and straightforward method for characterizing ultrafast ST-OAM pulses. Using spatially resolved spectral interferometry, we demonstrate a simple, stationary, single-frame method to quantitatively characterize ultrashort light pulses carrying ST-OAM. Using our method, the presence of an ST-OAM pulse, including its main characteristics such as topological charge numbers and OAM helicity, can be identified easily from the unique and unambiguous features directly seen on the raw data-without any need for a full analysis of the data. After processing and reconstructions, other exquisite features, including pulse dispersion and beam divergence, can also be fully characterized. Our fast characterization method allows high-throughput and quick feedback during the generation and optical alignment processes of ST-OAM pulses. It is straightforward to extend our method to single-shot measurement by using a high-speed camera that matches the pulse repetition rate. This new method can help advance the field of spatially and temporally structured light and its applications in advanced metrologies.

All High-Grade Ta Tumors Should Be Classified as High Risk: Bacillus Calmette-Guérin Response in High-Grade Ta Tumors.

PURPOSE: There is variation amongst guidelines with respect to risk stratification of Ta tumors, specifically high-grade (HG) Ta tumors. We sought to investigate the response of all Ta tumors to bacillus Calmette-Guérin (BCG) and compare response rates based on European Association of Urology (EAU) classification as intermediate- (IR) or high-risk (HR). MATERIALS AND METHODS: An institutional review of all patients who received adequate BCG from 2000-2018 was conducted. EAU 2021 prognostic risk groups were used to stratify patients including by the newly proposed adverse risk factors. RESULTS: When patient with Ta tumors were stratified into IR and HR, 37 (16%) had IR low-grade (LG) Ta, 92 (40%) had IR HG Ta and 101 (44%) had HR HG Ta tumors. BCG unresponsiveness developed in 13% of HR HG Ta tumors and 14% of IR HG Ta tumors compared to 0.0% of IR LG Ta tumors (p=0.003). While no patients with IR LG Ta tumors progressed, progression rates were similar in HR HG Ta and IR HG Ta tumors (≥T2: 5.9% and 6.5%; [Formula: see text]T1: 13% and 13%, respectively). Rates of recurrence, BCG unresponsiveness and progression were similar, irrespective of number of EAU risk factors present (p=0.9, p=0.8 and p=0.9, respectively). CONCLUSIONS: All HG Ta tumors, regardless of EAU risk stratification, have inferior response to BCG and increased rates of progression compared to IR LG Ta tumors. EAU clinical risk factors did not improve prediction of oncologic outcomes among HG Ta patients who received adequate BCG. These data support consideration of all HG tumors as high risk.

Children of ISIS: considerations regarding trauma, treatment and risk.

The rise of the Islamic State of Iraq and Syria (ISIS) brought with it a new wave of child soldier. This was characterised by media and propaganda circulating of children as young as four being exposed to detonators and rifles, along with perpetrating acts of violence. However, since the dismantling of ISIS, many of these children are now returning home to countries such as Australia and those in the United Kingdom and Europe; having been exposed to extremist Islamic ideology, radicalisation, and psychological and physical abuse. This review highlights that the trauma experienced by the child soldiers increases the possibility of symptomology associated with depression, anxiety, and externalising problems. Due to the complex and prolonged exposure to trauma, Developmental Trauma Disorder (DTD) is considered. Alongside mental health symptomology, psychometric risk assessment tools are examined, and suitable psychological services are discussed as possible interventions and support systems for children.

Evidence for the standard model, multiple trace theory, or the unified theory?

There have been two dominating theories for memory consolidation: the standard model (SM) and multiple trace theory (MTT). Whereas lesion studies have largely indicated a waning role for the hippocampus in memory consolidation, and thus have supported SM, findings from neuroimaging studies have produced varying results. Tallman et al. (this issue) argue that this variability may result from confounding factors and that, once these factors are accounted for, their neuroimaging results support SM. They do not, however, consider a third option: the unified theory. Here, we suggest that their findings, along with neurobiochemical and engram cell studies, may better fit this third theory.

Necklace-structured high-harmonic generation for low-divergence, soft x-ray harmonic combs with tunable line spacing.

The extreme nonlinear optical process of high-harmonic generation (HHG) makes it possible to map the properties of a laser beam onto a radiating electron wave function and, in turn, onto the emitted x-ray light. Bright HHG beams typically emerge from a longitudinal phased distribution of atomic-scale quantum antennae. Here, we form a transverse necklace-shaped phased array of linearly polarized HHG emitters, where orbital angular momentum conservation allows us to tune the line spacing and divergence properties of extreme ultraviolet and soft x-ray high-harmonic combs. The on-axis HHG emission has extremely low divergence, well below that obtained when using Gaussian driving beams, which further decreases with harmonic order. This work provides a new degree of freedom for the design of harmonic combs-particularly in the soft x-ray regime, where very limited options are available. Such harmonic beams can enable more sensitive probes of the fastest correlated charge and spin dynamics in molecules, nanoparticles, and materials.

Intravesical sequential gemcitabine and docetaxel versus bacillus calmette-guerin (BCG) plus interferon in patients with recurrent non-muscle invasive bladder cancer following a single induction course of BCG.

INTRODUCTION: Repeat BCG induction remains an option for select non-muscle invasive bladder cancer (NMIBC) patients who fail initial therapy. Alternative salvage intravesical regimens such as Gemcitabine and Docetaxel (Gem/Doce) have been investigated. We aimed to compare the efficacy BCG plus interferon a-2b (BCG/IFN) and Gem/Doce in patients with recurrent NMIBC after a single prior BCG course. METHODS: The National Phase II BCG/IFN trial database and multi-institutional Gem/Doce database were queried for patients with recurrent NMIBC after one prior BCG induction course, excluding those with BCG unresponsive disease. Stabilized inverse probability treatment weighted survival curves were estimated using the Kaplan-Meier method and compared. Propensity scores were derived from a logistic regression model. The primary outcome was recurrence free survival (RFS); secondary outcomes were high-grade (HG) RFS and risk factors for treatment failure. RESULTS: We identified 197 BCG/IFN and 93 Gem/Doce patients who met study criteria. Patients receiving Gem/Doce were older and more likely to have HG disease, CIS, and persistent disease following induction BCG (all P < 0.01). After propensity score-based weighting, the adjusted 1- and 2-year RFS was 61% and 53% after BCG/IFN versus 68% and 46% after Gem/Doce (P = 0.95). Adjusted 1- and 2-year HG-RFS was 60% and 51% after BCG/IFN versus 63% and 42% after Gem/Doce (P = 0.68). Multivariable Cox regression revealed that Gem/Doce treatment was not associated with an increased risk of failure (HR = 0.97, P = 0.89) as compared to BCG/IFN. CONCLUSION: Patients with recurrent NMIBC after a single induction BCG failure and not deemed BCG unresponsive had similar oncologic outcomes with Gem/Doce and BCG/IFN in a post-hoc analysis. Additional prospective studies are needed.

Understanding the role of grievance and fixation in lone actor violence.

In pursuit of public discourse, there is a risk of a simple polarity in thinking, meaning acts of public/mass violence, or those where there is a risk of public violence are categorized as terrorist acts or not. The reliance on categorization, and the pursuit of assigning ideology, diminishes the complexity of factors contributing to these forms of offending. This approach misses a critical opportunity to understand the pathways to violence and reduces the significance of comorbid or co-occurring factors that give rise to the violence. Lone Actor Grievance Fueled Violence (LAGFV) is a recently utilized term based on mounting evidence that those who seek to perpetrate acts of lone actor violence, whether this be those where a terrorist motivation can be assigned, a school attacks, workplace attack, or an attack in a public place, are commonly fueled by grievance and fixation. LAGFV at this juncture is a blurry construct without definitive rules and boundaries, and instead provides a guiding conceptualization of a diverse group of offenders who commit targeted violence towards others. The current review contends that LAGFV emerges through the perceived thwarting of psychological needs and the central task for clinicians and other professional services lies in understanding the unique pathways and contributing factors that give rise to violence for each specific individual/case. The review contends that is not fit to determine whether an act is of ideological significance, or constituting terrorism, without understanding the psychosocial and circumstantial factors contributing to the violence.

Implications of Guideline-based, Risk-stratified Restaging Transurethral Resection of High-grade Ta Urothelial Carcinoma on Bacillus Calmette-Guérin Therapy Outcomes.

BACKGROUND: Guideline indications for restaging transurethral resection (reTUR) for high-grade (HG) Ta bladder tumors vary due to a paucity of data. OBJECTIVE: To investigate guideline-based, risk-adapted approaches to reTUR for HG Ta lesions. DESIGN, SETTING, AND PARTICIPANTS: An institutional review of HG Ta patients who received adequate bacillus Calmette-Guérin (BCG) from 2000 to 2019 was conducted. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: Guideline criteria for reTUR were used to stratify patients. Kaplan-Meier product limits estimated survival. Cox regression and log-rank tests identified association of variables with survival. RESULTS AND LIMITATIONS: Of the 209 patients with HG Ta bladder cancer, 104 (50%) underwent reTUR, which identified residual disease in 39 patients (38%). Only one patient (1%) was upstaged to pT1 on reTUR. In all unstratified HG Ta patients, reTUR was associated with improved progression-free survival (p = 0.050) and recurrence-free survival (RFS; p = 0.003). The 5-yr RFS for patients who underwent versus those who did not undergo reTUR based on AUA guidelines was 73% (95% confidence interval 63-81%) versus 52% (40-62%), and for those who underwent versus those who did not undergo reTUR based on EAU guidelines was 76% (61-86%) versus 22% (4-49%). In 45 patients meeting both AUA high-risk criteria (large, multifocal tumors) and EAU criteria (lack of detrusor muscle) for reTUR, lack of restaging was associated with over a two-fold increase in recurrence (67% vs 15%, p = 0.002) and progression (25% vs 6%, p = 0.109). Data were limited by selection bias unaccounted for in selecting candidates for reTUR. CONCLUSIONS: Restaging TUR in all HG Ta patients, regardless of risk stratification, was associated with improved outcomes. The benefit of reTUR was most notable in high-risk patients without muscle in the index specimen, consistent with components of both AUA and EAU guidelines. These data support a non-risk-adapted approach to reTUR for all HG Ta lesions. PATIENT SUMMARY: Restaging bladder tumor resection improves outcomes in patients with high-grade Ta tumors treated with bacillus Calmette-Guérin (BCG).