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1.
Rami Ali 《Ethics and Information Technology》2015,17(4):267-274
Luck (2009) argues that gamers face a dilemma when it comes to performing certain virtual acts. Most gamers regularly commit acts of virtual murder, and take these acts to be morally permissible. They are permissible because unlike real murder, no one is harmed in performing them; their only victims are computer-controlled characters, and such characters are not moral patients. What Luck points out is that this justification equally applies to virtual pedophelia, but gamers intuitively think that such acts are not morally permissible. The result is a dilemma: either gamers must reject the intuition that virtual pedophelic acts are impermissible and so accept partaking in such acts, or they must reject the intuition that virtual murder acts are permissible, and so abstain from many (if not most) extant games. While the prevailing solution to this dilemma has been to try and find a morally relevant feature to distinguish the two cases, I argue that a different route should be pursued. It is neither the case that all acts of virtual murder are morally permissible, nor are all acts of virtual pedophelia impermissible. Our intuitions falter and produce this dilemma because they are not sensitive to the different contexts in which games present virtual acts. 相似文献
2.
This study presents a model for predicting the low-cycle fatigue life of steel reinforcing bars using Artificial Neural Network (ANN). A Radial Basis Function (RBF) artificial neural network topology with two additional hidden layers and four neurons (processing elements) in each of these layers is used. The input parameters for the network are the maximum tensile strain (εs,max) and the strain ratio (R) and the output of the ANN is the number of cycles to fatigue failure (Nf). Low-cycle fatigue tests were conducted by the authors in a previous study for different types of steel reinforcing bars subjected to different strain amplitudes and at different strain ratios. The data resulted from these tests were used to train and test the ANN. It is observed that the ANN prediction of low-cycle fatigue life of steel reinforcing bars is within ±2 cycles of the experimental results for the majority of the test data. A parametric study had been carried out to investigate the effect of maximum strain and strain ratio on the fatigue life of steel reinforcing bars. It is concluded that both the strain ratio and the maximum strain have significant effect on the low-cycle fatigue life of such bars, especially at low values of maximum strain and their effect should be considered in both analysis and design. Other observations and conclusions were also drawn. 相似文献
3.
Kimberly A. McBain Rami Habib George Laggis Andrea Quaiattini Nicole M. Ventura Geoffroy P. J. C. Noel 《Anatomical sciences education》2022,15(4):765-796
The purpose of this review was to identify the different augmented reality (AR) modalities used to teach anatomy to students, health professional trainees, and surgeons, and to examine the assessment tools used to evaluate the performance of various AR modalities. A scoping review of four databases was performed using variations of: (1) AR, (2) medical or anatomical teaching/education/training, and (3) anatomy or radiology or cadaver. Scientific articles were identified and screened for the inclusion and exclusion criteria as per Preferred Reporting Items for Systematic Reviews and Meta-Analyses with extension for scoping reviews guidelines. Virtual reality was an exclusion criterion. From this scoping review, data were extracted from a total of 54 articles and the following four AR modalities were identified: head-mounted display, projection, instrument and screen, and mobile device. The usability, feasibility, and acceptability of these AR modalities were evaluated using a variety of quantitative and qualitative assessment tools. Within more recent years of AR integration into anatomy education, the assessment of visuospatial ability, cognitive load, time on task, and increasing academic achievement outcomes are variables of interest, which continue to warrant more exploration. Sufficiently powered studies using validated assessment tools must be conducted to better understand the role of AR in anatomical education. 相似文献
4.
从吉斯的金字塔到底比斯的陵墓,古老埃及的璀璨历史就体现在这些著名的建筑上.不幸的是,每年近四百万的旅游者给上述古建筑,尤其是那些位于尼罗河西岸的陵墓带来了沉重的负担.用数字化技术帮助建立起传统陵墓的资料库,以便更好地保护这些重要的历史建筑.同时通过重建一个数字陵墓的例子,讨论了运用照片图像及数字建构技术应注意的新问题,例如需要消除图像的变形、矫正三维模型和调整光线的平衡等问题,来达到真实的数字感观. 相似文献
5.
Sexual harassment in Jewish and Arab public schools in Israel 总被引：1，自引：0，他引：1
OBJECTIVE: Current empirical literature on sexual harassment in schools is mostly based on nonrepresentative samples of middle-class high-school Caucasian female students. Thus the scope of research regarding gender, age, and cultural differences is very limited. This article reports on findings on sexual harassment in Jewish and Arab schools in Israel with regard to gender, age, and cultural differences. METHOD: The study is part of the first national survey on school violence in Israel. The representative sample includes 10,400 students in grades 7 through 11 attending public schools in Israel. Students were asked to report whether they were victims of specific acts of sexual harassment in school during the month before the survey. RESULTS: Overall, 29.1% of the students were victims of at least one act of harassment. The more common acts were to show offensive pictures or to send obscene letters, to take off or to try to take off part of the student's clothing, and to try to kiss a student. The most vulnerable groups are the Arab boys and 8th grade students. Report rates were the lowest among Arab girls. CONCLUSIONS: Sexual harassment is prevalent in Israeli schools. The pattern of victimization is different for boys and girls and for students in Jewish and Arab schools. These patterns are a complex phenomenon that must be considered in the intervention and policy measures addressing sexual harassment at school. 相似文献
6.
Rami Faraj Łukasz Jankowski Cezary Graczykowski Jan Holnicki-Szulc 《Journal of The Franklin Institute》2019,356(14):7855-7872
This paper investigates an application of a ball-screw inerter for mitigation of impact loadings. The problem of impact absorption is to provide a minimum reaction force that optimally decelerates and eventually stops an impacting object within the available absorber stroke. It significantly differs from vibration mitigation problems which are typical application of inerters. The paper demonstrates that the optimum absorption can be achieved by fully passive means. For known values of the object mass and inerter parameters, the obtained solution is independent of the impact velocity. The optimum passive absorption is achieved by employing a variable thread lead. As a result, two force components emerge, the typical inertance-related force and a damping-like term, and sum up to provide the optimum constant deceleration force. This result is relatively unique: conventional absorbers do not provide a constant force even with complex active control systems. Finally, an optimization problem is formulated to reduce the influence of process uncertainties (range of possible mass values, unknown friction). The results are verified and analyzed in a numerical example. 相似文献
7.
One of the subjects that undergraduate students learning Object Oriented (OO) design find hard to apply is the construction of class hierarchies in general, and the use of interface classes in particular. The design process requires decomposition and reconstruction of problems in order to model software classes. The common attributes and behaviors are usually modeled using class inheritance except when the common behaviors do not belong to the same class hierarchy; in such case, an interface class is preferred. In order to be able to properly design, the designer has to demonstrate the abstraction abilities on various levels. In this study, we aimed at examining the students' demonstration of abstraction levels during design of class hierarchy in general, and whether or not they use interface classes in particular. The results of the study reveal that a majority of students were able to build a reasonable class hierarchy; however, many of them did not use interface classes as a tool for expressing common behaviors. Nevertheless, all of them could identify and choose the best solution for a particular problem among four different solutions, which included the use of interface class. 相似文献
8.
Horse riding predisposes to degenerative spinal injury to both rider and horse. This study evaluated the dynamic pressure exerted on horse and horse rider. The main comparison investigated was how the flocking (cushioning) material of a saddle affected the pressure exerted on both. Six horse riders and one horse were used to conduct this study. The Pliance® horse saddle and seat pressure testing systems, designed by NovelGmBH, were used for this study. Pressure recordings were carried out from a saddle fitted with wool then again following its conversion to air flocking. Both flocking materials were tested during a variety of different gait settings using two pressure mats to record the pressures firstly being exerted onto the horse and secondly onto the rider. This study was the first carried out to examine the pressure exerted on horse and rider. Results found that both the mean peak pressure (MPP) and mean pressure–time integral (PTI) exerted on the rider increased by as much as 21.9 and 22 %, respectively, following conversion to air flocking. In contrast, the air flocking saddle exerted a lower MPP and PTI on the horse by as much as 25.3 and 26.6 %, respectively. This study has shown that air flocking reduces the pressure exerted on the horse; however, it has also indicated that it increased the pressures exerted on the rider. As a result of our study, further research needs to be conducted to determine the most appropriate material to flock a saddle with. 相似文献
9.
OBJECTIVES: Our goal was to examine how professionals assess children at risk and their parents, and decide on particular interventions. Specifically, we explored whether their assessments and decision-making are influenced by (1) the mother's degree of cooperativeness and/or (2) the country in which the worker lives (Canada or Israel). METHOD: Workers working in the child welfare field (N = 181) were presented with a case vignette and asked to assess the child and parents, and the degree of risk to the child, and make an intervention recommendation. The measures used in this study were based on previous work and field-tested in both countries. RESULTS: Significant differences were found between the two countries regarding workers' age and level of experience, with Canadians being older and more experienced than Israelis. Significant differences were also found between the two countries regarding the assessments of the child and parents and also of risk to the child, with Canadians assessing significantly more stringently than Israelis. The difference in levels of experience between the two countries did not explain these differences; however, it did influence intervention recommendations, only for those with 3 years or more of experience. Within this group, significantly more Canadians than Israelis recommended removing the child from the home. Regarding maternal cooperativeness, this factor did affect workers' assessments of the mother, but not of the father or child, or the worker's recommended intervention. Israelis' assessments were significantly more influenced by the mother's cooperativeness than Canadians'. CONCLUSIONS: Significant differences were found between the Canadian and Israeli professionals in this study in both their assessments and their intervention recommendations. These appear to reflect the different social, cultural, and political contexts in which these professionals work, and underscores the value of cross-national comparative studies in child welfare. 相似文献
10.
Rami Benbenishty Merav Jedwab Wendy Chen Saralee Glasser Hanna Slutzky Gil Siegal Zohar Lavi-Sahar Liat Lerner-Geva 《Child abuse & neglect》2014
This study examines judgments made by hospital-based child protection teams (CPTs) when determining if there is reasonable suspicion that a child has been maltreated, and whether to report the case to a community welfare agency, to child protective services (CPS) and/or to the police. A prospective multi-center study of all 968 consecutive cases referred to CPTs during 2010–2011 in six medical centers in Israel. Centers were purposefully selected to represent the heterogeneity of medical centers in Israel in terms of size, geographical location and population characteristics. A structured questionnaire was designed to capture relevant information and judgments on each child referred to the team. Bivariate associations and multivariate multinomial logistic regressions were conducted to predict whether the decisions would be (a) to close the case, (b) to refer the case to community welfare services, or (c) to report it to CPS and/or the police. Bivariate and multivariate analyses identified a large number of case characteristics associated with higher probability of reporting to CPS/police or of referral to community welfare services. Case characteristics associated with the decisions include socio-demographic (e.g., ethnicity and financial status), parental functioning (e.g., mental health), previous contacts with authorities and hospital, current referral characteristics (e.g., parental referral vs. child referral), physical findings, and suspicious behaviors of child and parent. Most of the findings suggest that decisions of CPTs are based on indices that have strong support in the professional literature. Existing heterogeneity between cases, practitioners and medical centers had an impact on the overall predictability of the decision to report. Attending to collaboration between hospitals and community agencies is suggested to support learning and quality improvement. 相似文献