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Climate change is recognised as one of the key challenges humankind is facing. The Information and Communication Technology (ICT) sector including data centres generates up to 2% of the global CO2 emissions, a number on par to the aviation sector contribution, and data centres are estimated to have the fastest growing carbon footprint from across the whole ICT sector, mainly due to technological advances such as the cloud computing and the rapid growth of the use of Internet services. There are no recent estimations of the total energy consumption of the European data centre and of their energy efficiency. The aim of this paper is to evaluate, analyse and present the current trends in energy consumption and efficiency in data centres in the European Union using the data submitted by companies participating in the European Code of Conduct for Data Centre Energy Efficiency programme, a voluntary initiative created in 2008 in response to the increasing energy consumption in data centres and the need to reduce the related environmental, economic and energy supply security impacts. The analysis shows that the average Power Usage Effectiveness (PUE) of the facilities participating in the programme is declining year after year. This confirms that voluntary approaches could be effective in addressing climate and energy issue.

In this article, the author has advanced the view that the world is currently on the threshold of a new status quo--the hegemony of the image. Yet, this seems a mixed blessing, for people, and especially young people, are not equipped with the necessary critical viewing and thinking skills to survive it. Nevertheless, this unfortunate situation can and should be altered. To achieve this aim, individuals need to use their most powerful weapon, that is, the concept of visual literacy (VL). The need for VL training has become more than understandable and self-evident. Thus, educators have to face the demand for VL training more rigorously than in the past. They have to start taking systematic steps towards the direction of introducing the life-skill of VL to their teaching. Educators need to recognize that all teaching and learning experiences involve communication and that communication cannot any longer be limited to spoken or written word. The development of VL will also result in increasing the students' ability to better comprehend, thus better cope and interact with today's world. To be more precise, developing VL should be viewed as an indispensable part of the lifelong learning agenda if indeed education is concerned with preparing students to become independent and flexible learners; with an understanding of the diverse range of market demands, as well as a willingness to equally foster and develop all key skills associated with those demands. (Contains 1 figure.)

Web-based distance education has become a \"real\" teaching alternative which has instigated more research particularly in the past decade. This research has commonly focused on four major perspectives: (1) information-technology; (2) course management systems (including course communication tools); (3) information design; and (4) online learning. Not surprisingly, there are many, significant differences between face-to-face (f2f), and Web-based teaching. In a traditional teaching context, communication is implemented synchronously insofar as teacher and students are able to communicate instantly, and without delay. Besides the direct and instantaneous verbal exchanges, synchronous communication also transpires through visual signs and body language. Conversely, if online teaching (e-moderating) occurs via the Internet and electronic multimedia, including the use of language (both oral and written), a common way of teaching in this context is through a dynamic interaction among participants, yet without the physical presence of the teacher or students. What happens then to the teacher's \"identity\" and role when s/he is no longer physically present as in a traditional classroom? How is it established? Perhaps most importantly, how is it perceived by both the students, and the teacher him/her-self? This two-phase, comparative research study was conducted by two university instructors whose research agenda concentrates on \"teacher perceptions of own qualities, roles, and functions\" in online instructional environments. Phase 1 of the research compared and discussed the emerging instructional styles of participating online teachers (e-moderators), in Sweden, and the United States. Phase 2 of this study has concentrated on using the identified perceptions, behaviors, motivations, and aspirations of the participating e-moderators with the view to creating composite, albeit fictional online instruction archetypes (\"personas\"). In their attempt to do justice to the analysis and presentation of Phase 1 data, the authors set out to experiment with the transfer and applicability to their respective blended and online teaching contexts, of the persona research method typically deployed by usability and interaction design. (Contains 2 tables.)

During the late 1960s, the concept of visual literacy gained considerable momentum in the United States due to a growing concern about the detrimental impact of television on children. Visual literacy, sometimes called \"visuacy,\" is a broad, \"eclectic in origin\" concept. This statement reflects the many theoretical foundations and origins of the concept. Terms such as visual communication, visual literacy, visual language, and even graphic design are so broad in their meanings that it is impossible to use them accurately to describe specific functions. Visual literacy definitions have varied from narrow to broad explanations of greater or lesser complexity. Languages differ in their ability to express concepts with precision and flexibility. Physics, chemistry, and mathematics, for example, employ non-ambiguous symbol and equation languages. The chapter examines the relevant literature and provided a framework that may describe and explain how visual literacy has performed to date.

The AECT International Convention, \"Cyber Change: Learning on our Connected World,\" was held from October 26-30, 2010 at the Hyatt Regency Orange County in Anaheim CA. Here, the 2010 AECT division, committees and societies reports are presented. Among other things, Michael Montalto-Rook, GSA Past-President, and Tutaleni I. Asino, GSA President, state that the following Graduate Student Assembly (GSA) report highlights the results of their convention activities in Anaheim and provides an agenda for this coming years. One of their initiatives from this past year was to increase the communications with other divisions of AECT by adding two new positions.

Pomegranate peel was investigated as biosorbent to remove uranium as well as thorium from aqueous solutions under different experimental conditions (concentration, counter ions, temperature). The material was used in raw and modified form after treatment with acidic and alkaline solutions to increase its sorption capacity. Isotherms were obtained at pH 4 and Cinitial: 5–300 mg L−1 for uranium and at pH 3 and Cinitial: 5–100 mg L−1 for thorium, respectively. The equilibrium data of the sorption study, which were adapted to the Langmuir and Freundlich models, indicated enhanced sorption efficiency (115 and 80 mg g−1 for uranium and thorium). Furthermore, kinetic and thermodynamic data as well as investigation by FTIR, XRD, and SEM revealed the complex sorption mechanism that can be explained by a combination of physical sorption accompanied by surface precipitation.

Background: Burkitt lymphoma (BL) is an aggressive non-Hodgkin lymphoma (NHL), subdivided into endemic, sporadic, and immunodeficiency-associated forms. While jaw lesions are common in endemic BL, they are infrequent in sporadic cases, only rarely constituting the first manifestation of the disease. The aim of this study is to present a rare pediatric case of sporadic BL first manifesting as gingival swellings and tooth hypermobility and provide a review of all the published sporadic BL case reports as the first sign of disease. Case report: An 11-year-old Caucasian female was referred for the evaluation of hypermobility of posterior lower teeth, associated with painful gingival swellings of 20 days duration. Clinical examination revealed right facial asymmetry and bilateral prominent swellings of the posterior lower gingiva. A panoramic radiograph revealed ill-defined radiolucent lesions in the posterior mandible bilaterally. On computed tomography, soft-tissue masses were identified along the mandibular ramus extending into the maxillary sinus bilaterally. The histopathologic and immunohistochemical analyses of the lesions led to a diagnosis of Burkitt lymphoma (BL). The patient underwent a full staging work-up, revealing bone marrow involvement and widespread disease. A multi-chemotherapy regimen was initiated with the regression of oral lesions and symptoms within a few weeks and complete disease remission after nine chemotherapy cycles. The patient remains free of disease 11 years later. Conclusions: This case underscores the critical importance of the timely diagnosis and life-saving referral of rapidly growing jaw lesions, which may represent the first sign of an underlying lymphoreticular malignancy with aggressive course, such as BL.

We analyzed data on pediatric invasive fungal diseases of the central nervous system (CNS-IFDs) reported by five of a total of eight Pediatric Hematology-Oncology Departments in Greece for 16 years (2007–2022). A total of twelve patients (11 boys, median age: 9.5 years, range: 2–16) were reported suffering from CNS-IFDs. The underlying malignancy was acute lymphoblastic leukemia in 9/12 and acute myeloid leukemia, Ewing sarcoma, and rhabdomyosarcoma in one each. Eleven patients presented with CNS-related symptoms (i.e., seizures, headache, cerebral palsy, ataxia, hallucination, seizures, blurred vision, amaurosis). All patients had pathological MRI findings. Multifocal fungal disease was observed in 6/12 patients. Nine proven and three probable CNS-IFD cases were diagnosed. Causative pathogens in proven cases were Aspergillus spp. and Candida albicans (n = 2 each), Mucor spp., Rhizopus arrhizus, Absidia spp., Fusarium oxysporum and Cryptococcus neoformans (n = 1 each). Causative pathogens in probable cases were Aspergillus spp. (n = 2) and Candida spp. (n = 1). All patients received appropriate antifungal therapy (median duration: 69.5 days, range 19–364). Two patients underwent additional surgical treatment. Six patients were admitted to the Intensive Care Unit due to complications. Three patients (25%) died, two due to IFD and one due to an underlying disease. Early recognition and prompt intervention of CNS-IFDs may rescue the patients and improve overall survival.

Although galactosemia can be detected through neonatal screening, some cases are characterized by rapid and severe presentation before screening results become available. We report the case of a neonate with classic galactosemia presenting with acute liver failure and cytopenias (thrombocytopenia, anemia, and neutropenia). Neonatal screening results showed increased galactose and phenylalanine levels. The diagnosis of galactosemia was confirmed by the measurement of galactose-1-phosphate uridyltransferase (GALT) activity in erythrocytes. Two mutations of the gene (c.563 A>G [p. Q188R] and c.957C>A [p.H319Q]) were revealed. High clinical suspicion of galactosemia is crucial to identify, as early as possible, cases with classical or even unusual presentation, and to initiate early treatment that could change the disease course and improve outcomes. Cytopenias should be included in the broad phenotypic spectrum of galactosemia.

Pressure ulcers are a major problem in patient care and are associated with the patient's quality of life, pain, depression, loss of function, lack of independence, increased incidence of infection and sepsis, as well as additional surgeries and extended hospital stays. Purpose: The present study aims to investigate the knowledge of nurses in intensive care units (ICUs) for the prevention and treatment of pressure ulcers. Method: This is a descriptive cross sectional study that used the Sparta Tool PU 2014 scale in nurses working in the ICUs in a tertiary cardiosurgical hospital in Athens, Greece. The study period was from November 2019 to May 2020. In total 107 nurses participated the study (90.68% of the ICU nurses). Kolmogorov-Smirnov test, t-test, analysis of dispersion (one way ANOVA), Kruskal-Wallis test were used. The statistical analysis was performed at a statistical significance level of p < 0.05 with the use of statistical package IBM SPSS v. 23.0. Results: The mean age of the sample was 39.04 ± 5.6 years with a mean length of working experience 14.45 ± 6.02 years. According to their statements regarding daily practice it is estimated that a mean of 8.69% of ICU patients, which they treated during the week prior to the study, developed pressure ulcers, independently of their severity. All the nurses follow a basic training programme regarding pressure ulcer prevention and treatment when they are still trainees, and 91.6% of them report using pads and other materials to treat or pressure ulcers as part of their daily practice. Noticeably, nearly 1/3 of them reported that they had no additional training in the care of pressure ulcers and the participants' basic knowledge regarding causes of pressure ulcers was self-assessed as moderate. Participants showed moderate knowledge regarding assessment of risk for the development of pressure ulcer but higher knowledge regarding preventive measures. Even though, participants' knowledge about prevention were less in comparison to their knowledge regarding treatment (p = 0.001). The length of working experience was not associated with higher knowledge score in contrast with postgraduate studies that were positively associated (p = 0.020). Conclusions: Nurses' knowledge regarding prevention and treatment of pressure ulcers was moderate. Data analysis revealed a number of opportunities for practice improvements and a clear need for continuous education.