Intention to Act: Predicting Bystander Intervention in Violent Situations in South Korea.

The purpose of this study is to explore the predictors of bystanders' intentions to intervene and types of intended intervention in domestic violence (DV) and sexual violence (SV) situations in South Korea. Using nationally representative data from the 2016 National Fact-Finding Survey on Gender Equality ( = 7,399) and logistic regression-based models, this study focused on two key predictors, bystander gender and attitudes about gender equality, while controlling for age, educational level, and employment status. Our findings indicated that males and females were equally likely to state intentions to intervene in both DV and SV situations.

Suspending loads decreases load stability but may slightly improve body stability.

Here, we seek to determine how compliantly suspended loads could affect the dynamic stability of legged locomotion. We theoretically model the dynamic stability of a human carrying a load using a coupled spring-mass-damper model and an actuated spring-loaded inverted pendulum model, as these models have demonstrated the ability to correctly predict other aspects of locomotion with a load in prior work, such as body forces and energetic cost. We report that minimizing the load suspension natural frequency and damping ratio significantly reduces the stability of the load mass but may slightly improve the body stability of locomotion when compared to a rigidly attached load.

Patient-Reported Outcomes of Periacetabular Osteotomy from the Prospective ANCHOR Cohort Study.

Background: Current literature describing the periacetabular osteotomy (PAO) is mostly limited to retrospective case series. Larger, prospective cohort studies are needed to provide better clinical evidence regarding this procedure. The goals of the current study were to (1) report minimum 2-year patient-reported outcomes (pain, hip function, activity, overall health, and quality of life), (2) investigate preoperative clinical and disease characteristics as predictors of clinical outcomes, and (3) report the rate of early failures and reoperations in patients undergoing contemporary PAO surgery.

Effects of independently altering body weight and mass on the energetic cost of a human running model.

The mechanisms underlying the metabolic cost of running, and legged locomotion in general, remain to be well understood. Prior experimental studies show that the metabolic cost of human running correlates well with the vertical force generated to support body weight, the mechanical work done, and changes in the effective leg stiffness. Further, previous work shows that the metabolic cost of running decreases with decreasing body weight, increases with increasing body weight and mass, and does not significantly change with changing body mass alone.

Extensive Lower-Extremity Deep Venous Thrombosis Following Arthroscopic Anterior Cruciate Ligament Reconstruction Related to May-Thurner Syndrome: A Case Report.

Case: An extensive iliofemoral-popliteal deep venous thrombosis following arthroscopic anterior cruciate ligament reconstruction presented on the ninth postoperative day as the result of underlying May-Thurner syndrome. The patient was managed with therapeutic anticoagulation and mechanical disruption of the thrombus. The focal stenosis of the left common iliac vein was addressed with angioplasty and stent placement.

Dynamics of carrying a load with a handle suspension.

Carrying loads with a compliant pole or backpack suspension can reduce the peak forces of the load acting on the body when the suspension natural frequency is tuned below the stepping frequency. Here we investigate a novel application for a load suspension that could be used to carry a load by hand, which is a common yet difficult method of load carriage and results in inherently asymmetric dynamics during load carriage. We hypothesize that the asymmetric dynamics of carrying a load in one hand will result in multiple locomotion frequency modes which can affect the forces of carrying a load with a handle suspension.

Glenohumeral mismatch affects micromotion of cemented glenoid components in total shoulder arthroplasty.

Background: The "rocking horse" phenomenon is considered the main cause of glenoid component loosening by eccentric loading of the glenoid rim. This study aimed to investigate the influence of increasing glenohumeral implant mismatch on bone-implant interface micromotion in a cemented all-polyethylene pegged glenoid biomechanical model.

Methods: Five glenoid sizes, 40 mm, 44 mm, 48 mm, 52 mm, and 56 mm, representing +2 mm, +6 mm, +10 mm, +14 mm, and +18 mm glenohumeral mismatch, respectively, were cyclically loaded according to ASTM Standard F2028-08 at a constant frequency of 2 Hz to a size-dependent humeral head subluxation translation.

A model of human walking energetics with an elastically-suspended load.

Elastically-suspended loads have been shown to reduce the peak forces acting on the body while walking with a load when the suspension stiffness and damping are minimized. However, it is not well understood how elastically-suspended loads can affect the energetic cost of walking. Prior work shows that elastically suspending a load can yield either an increase or decrease in the energetic cost of human walking, depending primarily on the suspension stiffness, load, and walking speed.

Ethnic group differences in police notification about intimate partner violence.

We analyzed data from the National Crime Victimization Survey to test whether individuals from different ethnic groups differentially notify the police after incidents of partner violence. After finding that minority groups notified the police about intimate partner violence (IPV) events more than non-minorities, we found that socioeconomic status differences between minorities and non-minorities explained a statistically significant proportion of the reasons underlying the differences in notification. We suggest that the pattern of our results supports a structural perspective and has potential implications about the subjective and objective efficacy of police involvement in IPV.

The relevance of relationship satisfaction and continuation to the gender symmetry debate.

In prior research, Ackerman and Field (2011) found that intimate partner violence (IPV) affects the relationship satisfaction of females more than the relationship satisfaction of males. The current research replicated those findings on a different sample of men and women. In addition to confirming past findings, it also found that gendered patterns in IPV differed substantially for current versus former relationships.