182 research outputs found

    RETHINKING CYBER WAR

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    The ongoing debate over cybernetic warfare and the threat it poses to modern society has been overly shaped by a traditional paradigm of warfare. This paradigm emphasizes physical destruction, as opposed to network disruption, as the principal means of inflicting damage on an adversary. While the war-as-destruction framework has been the dominant one since time immemorial, it would be highly misleading to view cyber war within this framework. In fact, it is the disruptive potential of cybernetic attacks, as opposed to their destructive potential, that poses the greatest risk to the security of nations. Cybernetic warfare must be reevaluated within this new framework in order to be properly understood. Cybernetic attacks come in two principal forms: those targeting data and those targeting control systems. Data attacks attempt to steal or corrupt information or deny electronic services to legitimate users of the data. The vast majority of cyberneti

    TakeCARE, a Video to Promote Bystander Behavior on College Campuses: Replication and Extension

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    Previous research has demonstrated that college students who view TakeCARE, a video bystander program designed to encourage students to take action to prevent sexual and relationship violence (i.e., bystander behavior), display more bystander behavior relative to students who view a control video. The current study aimed to replicate and extend these findings by testing two different methods of administering TakeCARE and examining moderators of TakeCARE’s effects on bystander behavior. Students at four universities (n = 557) were randomly assigned to one of three conditions: (a) view TakeCARE in a monitored computer lab, (b) view TakeCARE at their own convenience after receiving an email link to the video, or (c) view a video about study skills (control group). Participants completed measures of bystander behavior at baseline and at a 1-month follow-up. Participants in both TakeCARE conditions reported more bystander behavior at follow-up assessments, compared with participants in the control condition. The beneficial effect of TakeCARE did not differ significantly across administration methods. However, the effects of TakeCARE on bystander behavior were moderated by students’ perceptions of campus responsiveness to sexual violence, with more potent effects when students perceived their institution as responsive to reports of sexual violence

    Accommodation functions: co-dependency and relationship to refractive error

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    We assessed the extent to which different accommodative functions are correlated and whether accommodative functions predict the refractive error or the progression of myopia over a 12 month period in 64 young adults (30 myopes and 34 non-myopes). The functions were: amplitude of accommodation; monocular and binocular accommodative facility (6 m and 40 cm); monocular and binocular accommodative response to target distance; AC/A and CA/C ratios, tonic accommodation (dark focus and pinhole), accommodative hysteresis, and nearwork-induced transient myopia. Within groups of related accommodative functions (such as facility measures or open-loop measures) measurements on individuals were generally significantly correlated, however correlations between functions from different groups were generally not significant. Although accommodative amplitude and pinhole (open loop) accommodation were significantly different in myopes than in non-myopes, these functions were unrelated to myopia progression. Facility of accommodation and accommodative lag was independent predictors of myopia progression

    Safety of paclitaxel-coated balloon angioplasty for femoropopliteal peripheral artery disease

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    OBJECTIVES: The aim of this study was to assess safety outcomes of femoropopliteal drug-coated balloon (DCB) angioplasty using patient-level data from the Lutonix clinical program. BACKGROUND: A recent systematic review and meta-analysis of heterogenous trials and summary-level data identified increased long-term mortality in patients treated with paclitaxel-coated balloons and stents. METHODS: We evaluated DCB angioplasty (n = 1,093) and uncoated balloon angioplasty (percutaneous transluminal angioplasty [PTA]) (n = 250) outcomes in LEVANT 1 (The Lutonix Paclitaxel-Coated Balloon for the Prevention of Femoropopliteal Restenosis), LEVANT 2 (Moxy Drug Coated Balloon vs. Standard Balloon Angioplasty for the Treatment of Femoropopliteal Arteries), and the LEVANT Japan Clinical Trial. Hazard ratios (HRs) were calculated with Cox proportional hazards modeling. RESULTS: There were no significant differences in mortality rates between DCB angioplasty and PTA. The 5-year HR was 1.01 (95% confidence interval [CI]: 0.68 to 1.52) in the aggregated LEVANT trials. The 2-year HR after DCB angioplasty was 0.99 (95% CI: 0.25 to 3.95) in LEVANT 1, 1.40 (95% CI: 0.62 to 3.14) in LEVANT 2, and 0.32 (95% CI: 0.05 to 1.92) in the LEVANT Japan Clinical Trial. The 5-year HR was 1.60 (95% CI: 0.94 to 2.72) in LEVANT 2. Adverse events and causes of death were balanced, without clustering between DCB angioplasty and PTA. Patients who underwent paclitaxel or nonpaclitaxel reinterventions had higher survival rates than those who did not undergo reinterventions. Baseline covariates predicting mortality included, among others, age (HR: 1.03 per year; p \u3c 0.0001), prior treatment of target lesion (HR: 1.67; p = 0.022), arrhythmia (HR: 1.65; p = 0.031), and diabetes (HR: 1.18; p = 0.047), without differences between the 2 arms. No dose-response relationship was identified when adjusted for key predictors of mortality. CONCLUSIONS: Analyses of patient-level data identified no mortality differences between DCB angioplasty and PTA. Furthermore, the lack of dose-response relationships or clustering of causes of death argues against a causal relationship between paclitaxel and mortality. (LEVANT 1, The Lutonix Paclitaxel-Coated Balloon for the Prevention of Femoropopliteal Restenosis [LEVANT 1], NCT00930813; Moxy Drug Coated Balloon vs. Standard Balloon Angioplasty for the Treatment of Femoropopliteal Arteries [LEVANT 2], NCT01412541; LEVANT 2 Continued Access Registry, NCT01628159; LEVANT Japan Clinical Trial, NCT01816412)

    College Students’ Feelings of Campus Connectedness, Party Safety Behavior and Intervening to Prevent Sexual Assault and Intimate Partner Violence

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    Objective: This research examines associations between college students’ feelings of campus connectedness and two types of prosocial bystander intervention behavior to prevent sexual assault: party safety behavior and intervening in high-risk situations. Method: Short-term longitudinal associations between college students’ feelings of campus connectedness and bystander intervention behavior were examined in three studies. Study 1 (n = 213) examined these associations over a 1-month period. Study 2 (n = 557) was designed to replicate findings from Study 1 in a larger, more diverse sample. Study 3 (n = 730) was designed to replicate and extend findings with party safety behavior from Studies 1 and 2 over a 2-month period. Study 3 also examined whether frequency of party attendance and feelings of responsibility might help explain the association between campus connectedness and party safety behavior. In each of the three studies, students were recruited from multiple universities; students reported on feelings of campus connectedness at baseline and on bystander behavior at baseline and follow-up assessments. Results: In each study, students’ feelings of campus connectedness predicted party safety behavior at follow-up, controlling for party safety behavior at baseline. Feelings of campus connectedness were not associated with intervening in high-risk situations. In Study 3, frequency of party attendance and feelings of responsibility did not explain the association between campus connectedness and party safety behavior. Conclusion: Feelings of campus connectedness may be important to consider in campus efforts to prevent sexual assault
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