The Markings of a New Pencil: Introducing Programming-as-Writing in the Middle School Classroom

Using the setting of a writing workshop to facilitate a deliberate process to learn computer programming, this exploratory study investigates where there is a natural overlap between programming and writing through the storytelling motif, and to what extent existing language arts coursework and pedagogy can be leveraged to introduce this new form of digital composition to middle-school children. Whereas previous studies linking children’s programming with storytelling did so within the informal afterschool clubs, this study focuses on integrating computer science into the classroom, aligning curricula to core-content English language arts instruction

Living with Autism as a university student at Dublin City University: developing an Autism friendly university.

Background: Autism is a developmental disability that affects how one relates to, and communicates with other people. A number of definitions for autism exist but there is general agreement that the following characteristics are common amongst those on this spectrum - difficulties with communication, socialising, repetitive behaviours and a heightened sensory perception. Last year, Dublin City University (DCU) announced it’s intention to make the University more autism friendly https://www4.dcu.ie/news/2016/jan/s0116j.shtml The project reported on here marks the end of an 18-month programme to create an environment within DCU that allows students with Autism to take part more fully in college life and also to enhance their opportunity to gain employment after their studies are completed. Researchers at the School of Nursing and Human Sciences at DCU, in collaboration with AsIAm https://asiam.ie/ undertook a multi-arm study that explored the experiences of those living with Autism as a DCU student. Aims and Methods: The study aimed to identify and explore current services for DCU students with Autism, to explore their adequacy and to identify any gaps that could be addressed to improve life on campus. A whole campus approach to the study was taken, involving students, academics and support staff from across the multi-site university. By reviewing what is currently known about the challenges faced by students with Autism in higher education and by identifying the specific concerns/difficulties of DCU students with Autism, the research team set out to make a series of recommendations to the University to further meet the needs of students while on campus. In making these recommendations, it is hoped that they will, in turn, lead to an improved college experience for DCU students with Autism. As an integral part of this project, a literature review of peer reviewed studies was undertaken to explore what other Higher Education Institutes (HEIs) have been doing in this space. A comprehensive search and review of HEI websites across Europe and the United States of America was also undertaken. Both of these reviews then informed the methods and materials for four separate, but linked, studies described below. Study 1. An online anonymous survey was administered, via the Qualtrics software platform, to DCU students with Autism who have attended DCU for at least one semester. This survey was advertised to students through the DCU Disability & Learning Support Service (DLSS) but was also advertised via a call for participants issued by the Principal Investigator to the general student mailing list as we wanted it to be accessible to all students with Autism, including those who have not disclosed their diagnosis to the DLSS. The purpose of the survey was to explore the experiences of students with Autism attending DCU, to examine what services and parts of the university experience were and were not working well for them and to explore how these might be improved. Forty-five students with Autism began the online anonymous survey, but just 17 completed all aspects of it. Study 2. An online anonymous survey of the entire student body in DCU was administered, via Qualtrics, to explore the attitudes of the general student body to their peers with Autism and also to examine their levels of knowledge about Autism. This survey took the format of a short vignette and a range of questions about the vignette character (who has Autism). Participants in the study were asked to read a short vignette and to respond to a series of eight statements about the central character, using a 5-point Likert scale, where responses ranged from Strongly Disagree to Strongly Agree. In total, 227 students completed the general student body survey. Study 3. Focus groups and semi-structured interviews were conducted with academic and support staff of the University to explore the services and supports currently available on campus for students with Autism, to examine the issues arising for staff in engaging with students with Autism and to explore how they could be supported to engage more effectively with this student group. One focus group was conducted with academic staff (n=9) representing Chemical Sciences, Mathematical Sciences, Physical Sciences, the Institute of Education, Nursing and Human Sciences, Biotechnology, Engineering, Computing and Special Education. Another focus group was conducted with staff (n=4) from the DLSS, Student Services, Accommodation Services and INTRA Services. To augment these focus groups, five one-to-one interviews were conducted with staff from the DLSS, the Centre for Talented Youth in Ireland (CTYI), the Library and the Catering services. A further one-to-one interview was also conducted with a member of the Student’s Union team. Study 4. A sensory audit of both the DCU Glasnevin and DCU St. Patrick’s Campus was conducted by four students with Autism accompanied by two members of the research team to explore the issues that might arise for students in navigating the physical environment. An audit tool was developed and used and photographic records were taken. The goal of this audit was to look at the physical environment primarily from the perspective of noise, smells, lighting and signage. Key Findings: Literature review/HEI websites scoping exercise: The literature review revealed that there are pockets of activity in relation to creating an Autism friendly environment within many HEIs in the USA and the UK. Within the Irish context, there is evidence that HEIs are now placing a greater emphasis on ensuring that students with Autism are catered for in terms of general and specific student support services. Importantly, there is an increased recognition that students with Autism might need and benefit from supports that extend beyond and complement the support services that are typically provided to all students. Study 1: Survey of Students with Autism The majority of students with Autism felt that they had the academic skills to attend DCU, but only around half of the sample felt that they had the social skills needed to succeed at University. Many reported that they feel stigmatised by their diagnosis of Autism and are reluctant to disclose it, even to the DLSS. In total, 54% of students had not disclosed their diagnosis to the DLSS and even fewer (27%) had disclosed their diagnosis to academic staff. Because of this reluctance to disclose, many had not linked in with the DLSS, which could have provided valuable resources and supports. The reported reasons for non-disclosure included stigma, fear of discrimination, embarrassment, shame and adverse experiences in the past when having disclosed to somebody. Half of those surveyed reported that they felt lonely in DCU and that they do not cope effectively with stress or anxiety. A majority of students reported that they feel isolated or generally depressed and reported that they eat alone in the cafeteria or preferred to spend spare time alone in quiet places on campus. The majority indicated that they have considered dropping out. Most commonly cited difficulties related to socialising were - difficulties in talking to people, not knowing what to expect, difficulties in meeting people with similar interests and difficulties in being part of a group. As reported, heightened sensory awareness of noise, bustling environment, smells and lighting often exacerbates the isolation, with the restaurants, student bars, events etc being reported as too noisy. While some students felt that there was little else that DCU could do to support them in their social experience, other students had clear ideas about what they would need to improve their opportunities for socialising on campus. Among the suggestions made was the education of class representatives regarding the problems faced by students with Autism socially, reduction in the academic workload, and the setting up of a society specifically for students with Autism. Another suggestion was the hosting of smaller events and workshops by the Student’s Union. The majority of the students reported that they did not find group work easy and just over half the sample felt they did not have a good routine established around their study and assignments. Just over half of the students indicated that it was not easy to ask questions and seek guidance from lecturers, and just over one third reported that it was not easy to get support and information from the DCU support services. The majority of the students reported that they found attending lectures stressful and almost one in three reported that it is not easy to keep up with lectures. Over half the sample indicated that they did not manage their time effectively. Around half the sample did not find academic or support staff knowledgeable about Autism and many felt that academic staff are often unaware of students with Autism in their lecture theatre or are unsure of how to engage with them. The majority (65%) of students indicated that the range of supports available at DCU were adequate to meet their needs while 35% said they were not adequate. When asked what else would support them, some felt that the university did enough already but others made concrete suggestions about what they considered would be beneficial. Among the suggestons for improvements made were the creation of a society for students with Autism, to help them make friends and socialise and have a more involved role in DCU extra-curricular life, greater involvement with the disability office, more information, conversations and awareness of the needs of persons with Autism on campus, tackling the sensory issues on campus that impact negatively on students with autism, more overt offers of support (without having to go looking for them), support with exams, assignments, planning and organisation, quiet spaces to sit and eat at break times - as the canteens can be daunting and noisy and lead to social isolation at break times - as well as more information on the supports available. Other suggestions included - the provision of guidelines to staff around students with Autism, greater range of teaching and learning methods, greater variety of assessments, better spread of workload across the semester and greater flexibility with re-sit opportunities. Additional suggestions for improvements related to addressing over-crowding and noise in lectures and laboratories, reducing time pressure in labs, increased the number of posts on Loop (DCU's Virtual Learning Environment (VLE)), and better explanations of assignments. The role of the Student’s Union, student ambassadors, class representatives and Clubs and Societies was highlighted as a means to increasing awareness, promoting inclusion and improving life on campus for students with Autism Just over a third of final year students felt that they get enough support in preparing their Curriculum Vitae in preparation for employment and around one fifth of students felt they were adequately supported from the careers service to transition to employment. When asked what they liked about DCU, students identified the campus and its location, the fact that the DCU community was friendly and accepting, the friendliness of the DLSS office, the number of Clubs and Societies, very good lectures, the library, the Student’s Union, fellow students and the campus accommodation. Greatest needs identified • A Society for students with Autism, which can be attended with friends and allies. • Sensory issues on campus should be addressed. • Quite spaces to be provided. • Quite times at busy events such as Orientation, signing up for Clubs and Societies etc. • More visible information should be available on the DCU website for students with difficulties. • Reduce stigma - make DCU a campus where students feel they can reveal their diagnosis without fear or any adverse effects. • Specific autism training for staff across all sectors of campus, appropriate to their level of engagement with students. • Better communication across the different offices. • Improve signage, ensuring that it is clear, un-ambiguous and at the correct level (eye level). • Library - support in filtering information. • Catering - pre-orientation visit/tour and introduction of a prepay card system in order to avoid queuing. Study 2: Student-body Survey Whilst it is recognised that the survey may not have captured fully respondents’ views, attitudes and beliefs, student responses to the series of questions related to the short vignette about an individual with Autism generally reflected positive rather than negative attitudes and beliefs about their peers with Autism. Study 3: Focus groups and semi-structured interviews with academic and support staff There was a clear openness among participants in all focus groups and interviews to the concept of DCU becoming an Autism Friendly Campus. Participants were keen to support students with Autism and they offered a range of suggestions about how this could be approached in a way that would utilise existing forums and structures to embed the necessary principles and practices into a busy, growing university. Lack of knowledge about Autism and the tools and techniques to provide appropriate support to students with Autism were an issue for staff. While participants’ professional and personal knowledge and experience varied widely, there was a clear willingness to engage with others to address this knowledge gap. The student’s right to non-disclosure was acknowledged but focus groep and interview participants identified that students who do not disclose may miss out on benefits that those who disclose receive. It was acknowledged that stigma is still an issue. Resources are also an issue within classes and labs. Improved or shared communications between the various university offices, with appropriate staff, along with a clear referral pathway to the DLSS was identified as a potential means to provide solutions to many of the difficulties currently experienced. Greater awareness across all services and offices in the University, in addition to sharing of expertise from the CTYI (eg. Prepay and Buddy systems) were identified as potentially useful. Staff training was highlighted as a gap - guidance, information and Autism specific training on how to better support students with Autism was identified as needed. This could, for example, take the format of videos or presentations at staff meetings. An increased role for the DCU Office of Student Life, which includes the Student’s Union, Clubs and Societies, student ambassadors and class representatives was identified as a potential route to explore. An expanded role of and increased visibility of DLSS was also identified as potentiallly important as was timing of information to all students. Among the suggestions made was provision of information at orientation by the President, which may improve reach but also work to reduce the stigma associated with Autism. Provision of quiet times at typically busy events and provision of quite spaces were also identified as very important. Furthermore, it was suggested that parental involvement should be considered where a student agrees or requests this. The notion of a designated autism service in the University was also put forward as this would demonstrate that the University is serious about the term “Autism Friendly Campus”. Study 4: Sensory Audit From the sensory audit, it was apparent that some aspects of the physical environment on campus was working well for the students who took part in the audit while other aspects could be a source of potential difficulty, particularly for those with heightened sensory awareness to smells (e.g. cooking smells and cigarette smoke), bright colours (e.g. red on walls), fluorescent lighting and noise (e.g. a bustling noisy space, such as the restaurants at peak times). Queuing systems in on campus eateries created significant difficulties for some of the participants of the audit. Other less obvious things such as hard seating surfaces, dimly lit spaces, noise from photocopiers in the library and unused or stacked cluttered furniture in classrooms were all identified as making life more difficult for these students. Other aspects of the campus environment that could potentially cause difficulties included missing, busy or ambiguous signage or signage not at eye level. A low humming noise from a projector left on in one of the lecture theatres was also highlighted as a potential sensory irritant as it could be detected by some as a high-pitched sound. Conclusion This whole campus project provides important information about the experiences of third level students with Autism. Whilst DCU is already providing a wide variety of supports to students with Autism, we have, through this project, identified that additional supports (policy, practice and practical) would help enhance the experiences of students with Autism and would help empower these students to flourish socially and academically. This will, we believe, be particularly important as more students with Autism transition from secondary education to third level in the future. In conclusion, based on the findings from the separate but linked aspects of this project, it is apparent that there are many things that DCU is currently doing well in terms of meeting the needs of students with Autism. There are, however, many students with Autism who are struggling with the everyday navigation of academic and social life and there is much we could do to support them further. In this research, we have, in line with internation literature, identified that the needs of students with Autism are not fully being met with the traditional services offered by Disability and Learning Support units and that additional Autism-specific supports should be put in place to complement the standard services offered. Additional support services to benefit students with Autism should include complementary academic and social supports as well as supports in the realm of communication, information processing, life skills, navigation of the physical campus and securing internships and employment. These student-centered supports should be augmented by increated Autism-specific training and awareness elements amongst academic and support staff across the whole campus. Arising out of this project, we outline a series of principles that are grounded in the findings of this research and we have now begun the process of translating these principals into DCU-specific actions that will be implemented within a three-year timeframe. To achieve this, we have begun the process of identifying the DCU offices and services that are best placed, in terms of their expertise, to support the implementation of these actions. This will constitute Phase Two of this larger project. The President of DCU, Prof. Brian McCraith, has committed to adopting the eight Principles of an Autism Friendly University outlined below and to delivering on the proposed DCU-specific proposed actions to embed the principles of the Autism Friendly University over the next three years. Given this commitment, AsIAm and Specialisterene Ireland now recognise DCU as an Autism Friendly University and will award DCU Provisional Accreditation as an Accessible, Welcoming and Empowering (AWE) University. Ultimately, it is hoped that the principles identified here could be adopted by other HEIs that, like DCU, wishes to be recognised as an Autism Friendly University. Principles of an Autism Friendly University 1. Encourage and enable students with Autism to transition into and participate in university programmes. 2. Support and build capacity to equip students with Autism to meet the academic challenges of everyday university life. 3. Support and build capacity to equip students with Autism to meet the social challenges of everyday university life. 4. Seek to establish an Autism friendly operational environment. 5. Seek to combat the stigma around Autism and recognise the diverse experiences of those with the condition. 6. Develop understanding and relevant knowledge and skills within the University community. 7. Establish channels so that students with Autism can have a voice in various aspects of university life. 8. Increase employability of graduates with Autism, through a range of initiatives that will help develop their soft skills to support their transition beyond University

Measuring and Mitigating the Risk of IP Reuse on Public Clouds

Public clouds provide scalable and cost-efficient computing through resource sharing. However, moving from traditional on-premises service management to clouds introduces new challenges; failure to correctly provision, maintain, or decommission elastic services can lead to functional failure and vulnerability to attack. In this paper, we explore a broad class of attacks on clouds which we refer to as cloud squatting. In a cloud squatting attack, an adversary allocates resources in the cloud (e.g., IP addresses) and thereafter leverages latent configuration to exploit prior tenants. To measure and categorize cloud squatting we deployed a custom Internet telescope within the Amazon Web Services us-east-1 region. Using this apparatus, we deployed over 3 million servers receiving 1.5 million unique IP addresses (56% of the available pool) over 101 days beginning in March of 2021. We identified 4 classes of cloud services, 7 classes of third-party services, and DNS as sources of exploitable latent configurations. We discovered that exploitable configurations were both common and in many cases extremely dangerous; we received over 5 million cloud messages, many containing sensitive data such as financial transactions, GPS location, and PII. Within the 7 classes of third-party services, we identified dozens of exploitable software systems spanning hundreds of servers (e.g., databases, caches, mobile applications, and web services). Lastly, we identified 5446 exploitable domains spanning 231 eTLDs-including 105 in the top 10,000 and 23 in the top 1000 popular domains. Through tenant disclosures we have identified several root causes, including (a) a lack of organizational controls, (b) poor service hygiene, and (c) failure to follow best practices. We conclude with a discussion of the space of possible mitigations and describe the mitigations to be deployed by Amazon in response to this study

EIPSIM: Modeling Secure IP Address Allocation at Cloud Scale

Public clouds provide impressive capability through resource sharing. However, recent works have shown that the reuse of IP addresses can allow adversaries to exploit the latent configurations left by previous tenants. In this work, we perform a comprehensive analysis of the effect of cloud IP address allocation on exploitation of latent configuration. We first develop a statistical model of cloud tenant behavior and latent configuration based on literature and deployed systems. Through these, we analyze IP allocation policies under existing and novel threat models. Our resulting framework, EIPSim, simulates our models in representative public cloud scenarios, evaluating adversarial objectives against pool policies. In response to our stronger proposed threat model, we also propose IP scan segmentation, an IP allocation policy that protects the IP pool against adversarial scanning even when an adversary is not limited by number of cloud tenants. Our evaluation shows that IP scan segmentation reduces latent configuration exploitability by 97.1% compared to policies proposed in literature and 99.8% compared to those currently deployed by cloud providers. Finally, we evaluate our statistical assumptions by analyzing real allocation and configuration data, showing that results generalize to deployed cloud workloads. In this way, we show that principled analysis of cloud IP address allocation can lead to substantial security gains for tenants and their users

A programação de computadores regressa à escola

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Computer-assisted versus oral-and-written dietary history taking for diabetes mellitus

Background: Diabetes is a chronic illness characterised by insulin resistance or deficiency, resulting in elevated glycosylated haemoglobin A1c (HbA1c) levels. Diet and adherence to dietary advice is associated with lower HbA1c levels and control of disease. Dietary history may be an effective clinical tool for diabetes management and has traditionally been taken by oral-and-written methods, although it can also be collected using computer-assisted history taking systems (CAHTS). Although CAHTS were first described in the 1960s, there remains uncertainty about the impact of these methods on dietary history collection, clinical care and patient outcomes such as quality of life. Objectives: To assess the effects of computer-assisted versus oral-and-written dietary history taking on patient outcomes for diabetes mellitus. Search methods: We searched The Cochrane Library (issue 6, 2011), MEDLINE (January 1985 to June 2011), EMBASE (January 1980 to June 2011) and CINAHL (January 1981 to June 2011). Reference lists of obtained articles were also pursued further and no limits were imposed on languages and publication status. Selection criteria: Randomised controlled trials of computer-assisted versus oral-and-written history taking in patients with diabetes mellitus. Data collection and analysis: Two authors independently scanned the title and abstract of retrieved articles. Potentially relevant articles were investigated as full text. Studies that met the inclusion criteria were abstracted for relevant population and intervention characteristics with any disagreements resolved by discussion, or by a third party. Risk of bias was similarly assessed independently. Main results: Of the 2991 studies retrieved, only one study with 38 study participants compared the two methods of history taking over a total of eight weeks. The authors found that as patients became increasingly familiar with using CAHTS, the correlation between patients' food records and computer assessments improved. Reported fat intake decreased in the control group and increased when queried by the computer. The effect of the intervention on the management of diabetes mellitus and blood glucose levels was not reported. Risk of bias was considered moderate for this study. Authors' conclusions: Based on one small study judged to be of moderate risk of bias, we tentatively conclude that CAHTS may be well received by study participants and potentially offer time saving in practice. However, more robust studies with larger sample sizes are needed to confirm these. We cannot draw on any conclusions in relation to any other clinical outcomes at this stage

Securing Cloud File Systems using Shielded Execution

Cloud file systems offer organizations a scalable and reliable file storage solution. However, cloud file systems have become prime targets for adversaries, and traditional designs are not equipped to protect organizations against the myriad of attacks that may be initiated by a malicious cloud provider, co-tenant, or end-client. Recently proposed designs leveraging cryptographic techniques and trusted execution environments (TEEs) still force organizations to make undesirable trade-offs, consequently leading to either security, functional, or performance limitations. In this paper, we introduce TFS, a cloud file system that leverages the security capabilities provided by TEEs to bootstrap new security protocols that meet real-world security, functional, and performance requirements. Through extensive security and performance analyses, we show that TFS can ensure stronger security guarantees while still providing practical utility and performance w.r.t. state-of-the-art systems; compared to the widely-used NFS, TFS achieves up to 2.1X speedups across micro-benchmarks and incurs <1X overhead for most macro-benchmark workloads. TFS demonstrates that organizations need not sacrifice file system security to embrace the functional and performance advantages of outsourcing

Amphetamine, but not methylphenidate, increases ethanol intake in adolescent male, but not in female, rats

Introduction: There has been an increasing interest in analyzing the interactions between stimulants and ethanol during childhood and adolescence. Stimulants are used to treat attention-deficit hyperactivity disorder (ADHD) in these developmental stages, during which ethanol initiation and escalation often occur. Methods: This study assessed the effects of repeated d-amphetamine (AMPH) or methylphenidate (MPH) treatment during adolescence [male and female Wistar rats, between postnatal day (PD) 28 to PD34, approximately] on the initiation of ethanol intake during a later section of adolescence (PD35 to PD40). Results: Amphetamine and MPH exerted reliable acute motor stimulant effects, but there was no indication of sensitized motor or anxiety responses. MPH did not affect dopamine (DA) levels, whereas AMPH significantly reduced insular levels of DA in both sexes and norepinephrine levels in females only. Repeated treatment with AMPH, but not with MPH, enhanced ethanol intake during late adolescence in male, but not in female, rats. Conclusion: A short treatment with AMPH during adolescence significantly altered DA levels in the insula, both in male and females, and significantly enhanced ethanol intake in males. The present results suggest that, in adolescent males, a very brief history of AMPH exposure can facilitate the initiation of ethanol intake.Fil: Ruiz, Paul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigación Médica Mercedes y Martín Ferreyra. Universidad Nacional de Córdoba. Instituto de Investigación Médica Mercedes y Martín Ferreyra; Argentina. Universidad de la República; UruguayFil: Calliari, Aldo. Universidad de la República; UruguayFil: Genovese, Patricia. Universidad de la República; UruguayFil: Scorza, Cecilia. Instituto de Investigaciones Biológicas "Clemente Estable"; UruguayFil: Pautassi, Ricardo Marcos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigación Médica Mercedes y Martín Ferreyra. Universidad Nacional de Córdoba. Instituto de Investigación Médica Mercedes y Martín Ferreyra; Argentina. Universidad Nacional de Córdoba. Facultad de Psicología; Argentin