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While researchers with retracted papers – publications that are withdrawn because of significant errors or scientific misconduct – carry a permanent stain on their publishing records, understanding the causes and initiators of such retractions can shed a different light on the matter. This paper, based on a random sample of 2,046 retracted papers, which were published between 1975 and 2019, extracted from Retraction Watch and the websites of major publishers, shows that 53% of the retraction notices do not specify who initiated the retraction. Nearly 10% of the retraction notes either omit or do not contain information related to reasons for retractions. Furthermore, most of the retracted papers in our sample have no limitation section; those who do are commonly unhelpful or irrelevant. The results carry three implications for scientific transparency: retraction notices need to be more informative; limitation sections ought to be a required and even an open section of all published articles; and finally, promoting 'heroic acts' in science can positively change the current publishing culture. [ABSTRACT FROM AUTHOR]

This paper examines the work of Michael Novak, a prominent American philosopher and theologian with roots in Central Europe. The study focuses on Novak's understanding of democratic capitalism and its role in promoting economic growth and human flourishing. Novak argues that when properly understood and practiced, capitalism can lead to a more just and prosperous society, as it is based on the human desire for freedom, creativity, and self-expression. However, he emphasizes that the success of capitalism depends on the presence of moral and spiritual values, which he believes are necessary for it to function properly. This paper explores Novak's arguments and evaluates them in the light of current knowledge. It also examines which values Novak deems important and why. The paper concludes that while Novak's understanding of capitalism has some limitations, it offers valuable insights into the relationship between economics and morality. Novak's framework provides a starting point for future discussions on how to ensure that capitalism operates ethically and promotes the common good. [ABSTRACT FROM AUTHOR]

In recent decades, numerous herbal products have been shown to have antihyperglycemic and beta cell-regenerative effects in animal studies. However, there is no clinical evidence that those products completely cure patients with type-1 diabetes (T1D). Therefore, it seems that most of the phytochemicals do not have a significant impact on human beta cells, and the results of experimental studies conducted on them may not be generalizable to the clinic. The present work aims to review extensively the methods and results of preclinical studies on phytotherapy of T1D published in the last 10 years. This paper critically analyzes the designs of studies, treatment protocols, methods of diabetes induction, characteristics of the studied animals, clinical relevance, reproducibility of research, and other aspects related to conducting preclinical studies on T1D. We discussed limitations that make many of the results of these studies not generalizable to the clinic. Finally, some recommendations were given to improve studies on the phytotherapy of T1D to avoid misleading interpretations about the antidiabetic effect of herbal compounds. This paper can be considered a practical guide for researchers interested in the field of phytotherapy of T1D to increase the reliability, reproducibility, and validity of their preclinical studies. [Display omitted] [ABSTRACT FROM AUTHOR]

Qualitative research in psychology can often maintain standards and assumptions from positivistic and experimental methodologies. Sometimes these issues are well argued against or around logically in literature, often abstractly, but cases of methodological consideration with real cases are rarer. This discussion aims to help methodological reflection and learning by presenting a case of multiple intersecting methodological considerations. The methods included a content analysis completed on interviews with women related to men participating in a violence and intervention trial. This paper presents the limitations and methodological considerations during analysis as a detailed discussion. Considerations arose from assumptions in the research design, interpreter use and leading questions. The discussion describes considerations and solutions depending on the scope required – here working with women in or near contexts of violence. Hopefully, a demonstration of full considerations within such a project encourages similar case-based examinations of research. [ABSTRACT FROM AUTHOR]

Dye-sensitized solar cells have been under development for the last three decades but are yet to see the market. This has been attributed to stability issues of the electrolyte in the cell. Electrolytes can be liquid, quasi-solid, or solid. Liquid electrolytes were the first to be developed and, therefore, have been subject to radical revisions in both composition and applicability. They have shown the best power conversion efficiencies but have poor thermal stability. Although quasi-solid and solid-state electrolytes were developed to overcome these stability issues, they too have their limits. The aim of this paper is to explore the development of liquid electrolytes, outlining the current state of the technology and considering their potential in the photovoltaic market. [ABSTRACT FROM AUTHOR]

Any drug can potentially induce a hypersensitivity reaction. If after the allergological work‐up the drug hypersensitivity reaction is confirmed, in most cases, the simple avoidance of the culprit drug and a suggestion of an unrelated alternative is enough. However, there are circumstances where the choice to stop the treatment affects the survival, the safety and/or the quality of life of the patient and the global outcome of the disease in question. When this occurs, drug desensitization can be the answer and should not be viewed as an extravagance, nor the pediatric age should be considered a contraindication. Drug desensitization in children can be safely and successfully performed, having a positive impact on the survival and overall prognosis. In general, the indications for DDS are the same in adults as in children. However, in this age group there are specificities that this paper aimed to describe, reviewing the mechanisms behind drug hypersensitivity and rapid drug desensitization, types of protocols, indications, and contraindications, as well as several technical aspects that are specific to the pediatric age. [ABSTRACT FROM AUTHOR]

This paper aims to analyze the potentials and limitations offered by Information and Communication Technologies (ICT) in the educational field, specifically in the context of the pandemic caused by the SARS-COV2 virus. A qualitative research methodology with a documentary approach was employed to gather and analyze a series of relevant documents regarding the use of technology in contingency scenarios as substitutes for traditional learning environments. Based on the obtained results, it can be concluded that the pandemic has created an opportunity to rethink educational systems, 1mphasizeng the importance of ICT in the educational field. The need to design and redesign strategies that effectively integrate the use of ICT in classrooms, restructuring teaching and learning processes to ensure quality education, becomes evident. It is worth highlighting that ICT has demonstrated its ability to provide innovative solutions in the educational domain, enabling the continuity of the teaching and learning process during emergency situations such as the current pandemic. However, certain limitations and challenges must be addressed, such as the digital divide and the need for teacher training in the use of these technological tools. [ABSTRACT FROM AUTHOR]

The search for materials with better performance, longer service life, lower environmental impact, and lower overall cost is at the forefront of polymer science and material engineering. This has led to the development of self‐healing polymers with a range of healing mechanisms including capsular‐based, vascular, and intrinsic self‐healing polymers. The development of self‐healable systems has been inspired by the healing of biological systems such as skin wound healing and broken bone reconstruction. The goal of using self‐healing polymers in various applications is to extend the service life of polymers without the need for replacement or human intervention especially in restricted access areas such as underwater/underground piping where inspection, intervention, and maintenance are very difficult. Through an industrial and scholarly lens, this paper provides: a) an overview of self‐healing polymers; b) classification of different self‐healing polymers and polymer‐based composites; c) mechanical, thermal, and electrical analysis characterization; d) applications in coating, composites, and electronics; e) modeling and simulation; and f) recent development in the past 20 years. This review highlights the importance of healable polymers for an economically and environmentally sustainable future, the most recent advances in the field, and current limitations in fabrication, manufacturing, and performance. [ABSTRACT FROM AUTHOR]

Roads are the main transportation system in any country and, therefore, must be maintained in good physical condition to provide a safe and seamless flow to transport people and goods. However, road pavements are subjected to various defects because of construction errors, aging, environmental conditions, changing traffic load, and poor maintenance. Regular inspections are therefore recommended to ensure serviceability and minimize maintenance costs. Ground-penetrating radar (GPR) is a non-destructive testing (NDT) technique widely used to inspect the subsurface condition of road pavements. Furthermore, the integral use of NDTs has received more attention in recent years since it provides a more comprehensive and reliable assessment of the road network. Accordingly, GPR has been integrated with complementary NDTs to extend its capabilities and to detect potential pavement surface and subsurface distresses and features. In this paper, the non-destructive methods commonly combined with GPR to monitor both flexible and rigid pavements are briefly described. In addition, published work combining GPR with other NDT methods is reviewed, emphasizing the main findings and limitations of the most practical combination methods. Further, challenges, trends, and future perspectives of the reviewed combination works are highlighted, including the use of intelligent data analysis. [ABSTRACT FROM AUTHOR]

This introduction provides some insights on this special issue of Mortality, entitled Dying and Death in Former Communist European Countries, setting the issue against the general background of death studies and, more specifically, of death studies in eastern European countries. Some relevant references to the Dying and Death in 18th-21st Century Europe International Conference, organised in Romania, at the '1 Decembrie 1918ʹ University of Alba Iulia, Romania, between 2007 and 2019, are also made. The rationale and also the limitations of this special issue are brought into attention. The papers that form this issue are briefly presented. [ABSTRACT FROM AUTHOR]

Background: Adolescents, by their very nature and need for maturity, struggle with issues of the self and identity, while challenging the very systems that are there to support them. However, gender diverse adolescents may become detached and overwhelmed as a trans identity solidifies during this time. Bullies, blades and barricades describes the challenges, hardship and dispossession that some gender diverse adolescents face from interpersonal and intrapersonal conflicts, societal pressure and hostility. Method: This paper utilizes the current research on safety and risks affecting trans youth, the authors clinical experience of trans and gender diverse adolescents, and recommendations in the literature for professional care and support of gender diverse adolescents to identify the various ways gender diverse adolescents are negatively affected by their experiences. Results: Bullying is not limited to school or peer environments and may be present in adolescents' homes, in local communities, in professional services or from sources of information such as the media. The physical dangers gender diverse adolescents face may arise from victimization, violence or rejection, or self-harming behaviors due to negative beliefs, fear or frustration. Barriers preventing disclosure and expression of gender and/or identity may stem from negative experiences, rejection, pubertal changes, imposed limitations, dependence upon school, home or legal environments, or other spheres of influence. Discussion: Affirmative approaches, individual focus, recognition of family dynamics, inclusion of significant others, advocacy in school and local community environments as well as professional training are the most commonly recommended interventions. This paper provides an inclusive review of the myriad of challenges confronting gender diverse adolescents including often unrecognized forms of pressure, oppression and restrictions. This paper aims to support clinicians by contextualizing the adversity that gender diverse adolescents face and offers strategies for engagement and intervention. [ABSTRACT FROM AUTHOR]

The paper describes limitations in the process of cross wedge rolling (CWR). The problem of necking (rupture) of a shaft step is discussed in detail. In addition, the paper also overviews the state of the art of modelling the cross wedge rolling process by the finite element method-based software, Deform-3D. Next, the paper presents methods for increasing effectiveness in two types of CWR: cross wedge rolling where axial flow of metal is blocked and cross wedge rolling with upsetting. The proposed rolling methods are then verified numerically by Deform-3D. Finally, the presented solutions are verified in experimental tests of a rolling process for producing a lever (with blocked axial flow of metal) and for an upset rolling process for producing a driving shaft. [ABSTRACT FROM AUTHOR]

We critically discuss both advantages and limitations of helicopter-borne GPR surveys in rugged mountainous areas by analyzing a pseudo 3D data set acquired over the Marmolada Glacier, which constitutes the largest ice body in the Dolomites (Eastern Alps) and contains several peculiar features both in terms of the internal structures and the surrounding topography. In this paper we analyze several possible issues that can be encountered when performing airborne surveys in mountain regions, related to both the local conditions in the particular survey areas, and the general performance of the data acquisition equipment, which includes the GPR device, the GPS system, and the helicopter itself. Based on our analyses and observations, we propose a few guidelines and optimization strategies in order to address several issues, including the choice of various data acquisition parameters, interpretation problems related to curvilinear or irregular flight paths, and trace positioning errors caused by GPS malfunctioning or oscillating antennas. Such results have general validity and can be used for helicopter-borne survey planning, as well as for data analysis and interpretation. [ABSTRACT FROM AUTHOR]

The majority of human rights can be restricted in certain situations, despite their significance for every democratic society. That means that those rights are not absolute. Such situations represent, for example, war and states of emergency, according to the European Convention on Human Rights. Then, in order to protect the interest of the state and national security, human rights, that means the interests of individuals, come second. In that case, it is necessary to achieve a balance between the necessary restrictions and the preservation of the state’s interests. One of the best examples of the restrictions of human rights during a state of emergency is the period of Covid-19. Many rights, such as the right to respect for private and family life, were restricted during Covid-19 in a number of countries in Europe, but each country established its own measures according to its own situation. The cases regarding these restrictions and violations will be submitted to the European Court of Human Rights in the years to come. [ABSTRACT FROM AUTHOR]

In this paper, I narrate the long process of my encounters with English language learning and teaching, manifesting characteristics of English teaching at different levels of schools in mainland China. After viewing the limitations of English teaching in mainland China from my fresh point of view as a UK visiting scholar, some suggestions are proposed for its improvement and development. [ABSTRACT FROM AUTHOR]

Objectives: A narrative review on the potential use of low-dose protocols for cone beam computed tomography (CBCT) was conducted to identify indications and their relevance for various dental disciplines. Materials and methods: Google Scholar was searched using the words "low-dose CBCT". Reviews, consensus papers, clinical studies, and experimental studies were eligible for the initial screening process, but for data extraction only original articles were selected. Similar search procedures were then performed with the additional search words "pedo," "ortho," "endo," "implant," "perio," and "oral surgery." Furthermore, references of included articles were examined to identify further relevant articles. Results: After screening, 27 publications remained for the data extraction process. Low-dose protocols have been reported for specialties such as pediatric dentistry (evaluating orofacial clefts, periapical lesions, impacted teeth, and autotransplantation), orthodontics (cephalometric analysis and interim assessment of treatment results), endodontics (detecting root fractures, resorptions and periapical bone loss), implant dentistry (planning implant insertion, evaluating peri-implant fenestration and dehiscence), periodontology (assessing periodontal structures), and oral and maxillofacial surgery (assessing mandibular third molars and TMJs). Nevertheless, most of the literature available is related to non-clinical studies. Furthermore, there is a lack of position statements or guidelines from authoritative bodies regarding the use of low-dose protocols in dental medicine. Conclusions: Low-dose protocols for CBCT imaging seem to have potential in various disciplines in dental medicine ranging from pediatric dentistry to oral and maxillofacial surgery. Dose reduction is usually achieved by mAs reduction, use of partial rotations, reduced number of projections, and larger voxel sizes, but seldom by kV reduction. Clinical relevance: Albeit low-dose protocols have potential to result in a reduction of dose exposure for 3D imaging due to dental indications, there is a need to more clearly specify indications and limitations to avoid indiscriminate use of standard and high-dose CBCT scans in the future on the lines of ALARA/ALADA principles. [ABSTRACT FROM AUTHOR]

The purpose of the researches is based on current scientific and practical discourses on the accumulation of knowledge on the spatial peculiarities of the natural frame as elements that define the quality of the soils and the possible pressures on them. The importance of the topic is derived from the fact that the relations between the soil characteristics and the main cultivated species can establish relationships of varied and complex reciprocity. So the soil properties can exert a definite influence on the development of the root system, mineral nutrition, ensuring the aerohydric and thermal regime necessary for the physiological processes and the plants (phytocoenoses) in their turn act both directly and indirectly on the soil fertility status. Considering that these considerations in the paper are presented on the basis of the research carried out during the doctoral school, respectively 28.09.2015 and so far on the subject "Research on ecopedological bases of land productivity in Lipovei Hills and possible pressures on their quality", some aspects related to the structure of edafic cover and to the particularities of the main types and associations of soils, to their quality status and some restrictive characteristics of land quality, characteristics that define their vocation for certain utilities. By its geographical location the area known as Lipovei Hills, Lipovei Piedmont or Lipova Plateau is situated in the western part of the country, between the geographical coordinates: 21°22'30'' şi 22°21'30'' eastern longitude and 45°55' şi 46°15' north latitude, as a transition unit between the Western Carpathian orogen and the low, subsidence area of the Banat-Crişana Plain, which imparts to the area specific specicities of real interest for the scientific research. The necessity of the geomorphological and pedological researches of this depression unit of Mureş de Jos (the actual piedmont complex Lipovei Hills) was also imposed for socioeconomic and agricultural reasons in particular, because without knowing how the natural landscape evolved, from origins to at present, it is not possible to determine how the lands and soils will develop in the future. [ABSTRACT FROM AUTHOR]

The gold Implant (GI) has started to become important in the fight against chronic musculoskeletal pain in the '90s in Germany. GI has had success, because he left behind the traditional Chinese acupuncture (TCA) and evolved as an orthopedic conservative method, involving all the locomotor system. In this review paper are presented essential information about this new technique for veterinary medicine. Are presented: mechanism of action, IA techniques, the main implant points, the main indications of this technique, processes and dynamic post-operative interventions, combinations with other methods, limits of the gold implant. The paper supports, for the first time in our country, the popularization of this method especially effective in locomotory disorders in animals. [ABSTRACT FROM AUTHOR]

This paper presents the state-of-art of the Internet of Things (IoT), an enabler of new forms of communication between people and things, and between things. The main strength of the IoT concept is the high influence it has on everyday life by creating a new dimension to the world, similar to what the Internet once did. This paper describes the definitions of IoT and summarizes its main enabling technologies. The content includes the strengths and limitations of applications based on the IoT in logistics, transportation, healthcare, and environment and disaster. Finally, the open challenges of the IoT are debated to encourage more investigations into the domains. [ABSTRACT FROM AUTHOR]

Diagnostic laboratories are urged to take advantage of novel technological advancements to provide standardized and high-throughput information for clinicians; however, total laboratory automation (TLA) has only recently been introduced in clinical microbiology in the last 10–12 years. The introduction of total laboratory automation comes with certain advantages and drawbacks that need to be assessed before the introduction of such systems in the diagnostic workflow that includes the detection of anaerobic bacteria. For several reasons, there is yet to be a manufacturer to fully address the issue of anaerobes in the setting of laboratory automation; the aim of the present paper is to address some of the issues associated with anaerobes in lab automation. • An overview of issues regarding implementation of total laboratory automation and anaerobic bacteriology. [ABSTRACT FROM AUTHOR]

This paper deals with the constitutional meeting of the urban private property and social housing rights in multicultural context and democratic management of cities. The property, millennial Institute, guaranteed in the Brazilian legal system from the Constitution of 1824, has undergone several transformations over the centuries, such as the inclusion of limitations until reaching its humanization, playing an important economic and social role in the democratic state. The housing, social law, introduced by Constitutional Amendment No. 26/2000 essential to make effective human dignity, began to compose and to broaden the content of the right to property, bringing significant implications for exercise. The social function of property as it appeared the principle under which both the private property, and the social right to housing can be secured. Still, watching the confrontation between them has been the subject of coping by Brazilian Courts, an analysis of the urban private property and the social right to housing will be made - taking backdrop of the social function of property. The tendency of the courts will be - pointing Brazilians in ensuring urban private property even when it neglects the social function, implying a disgrace to the whole society. Analyzed as the Urban Public Policy "Minha Casa Minha Vida" program and the Institute of Expropriation. Do not be verified through urban policies presented recognizing change and emancipation of citizens in cities, but also socio-spatial exclusion, leading to formation of ghettos, and distancing himself from an effective urban justice. [ABSTRACT FROM AUTHOR]

In several multiphase flow applications such as fluidization, thermal spraying, atomization manufacturing and so on, the Newton's law is widely enacted to formulate the particle/fluid kinematic interaction and then to compute particles kinematics. This paper provides analytical solutions of the Newton's law in its time-dependent formulation or simplified formulation, the latter being a reduction of the time dependent problem into a spatial description of the particle motion. It was found that the velocity solution is strictly similar in both cases so that the simplified formulation is viable. The W_ 1 branch of the Lambert's function yields the analytical particle residence time and the particle velocity which enable to characterize particle kinematics and capabilities of cold spraying. Typical particles residence time is of about 10 − 7 –10 − 6 s and a typical characteristic duration is of about 10 − 4 –10 − 3 s to produce a deposit layer. This explains the high productivity rate of cold spraying among innovative additive manufacturing processes. Theoretical limitations of cold spraying are depicted using analytical solutions. Variances of particles velocity are mapped depending on both particle nature and Mach number used in cold spraying. According to analytical laws, the particle velocity using air propellant gas is limited to 600 m/s–1000 m/s for the situation of low particle density-diameter combination (ρ p⁎ D p ) experienced in cold spraying. Helium increases this kinematic limitation up to 1000 m/s–1600 m/s. Such analytical depictions characterize and facilitate a theoretical selection of process parameters including suitable particle features depending on gas nature and kinematic capabilities of cold spraying. [ABSTRACT FROM AUTHOR]

Background: Telehealth system is defined as the use of electronic information and telecommunication technologies to support and promote long-distance clinical health care, patient and professional healthrelated education, public health and health administration. The main aim of this study is to assess difficulties and limitations in hospitals that have healthcare system in Jeddah, Saudi Arabia from applied new techniques such as Telehealth and if they have tendency to use this technique or not. This study also aims to determine the association between increase in quality of healthcare system and new techniques applied such as Telehealth system by literatures reviews. Methods: A cross-sectional study was conducted in 114 medical providers who worked at hospitals in Jeddah, Saudi Arabia. The medical providers were interviewed using paper-based questionnaire as well as electric-based questionnaire, data collected and analyzed by using SPSS. Results: Interested participants in technology were high by 59%, participants actually interested to implement advanced Telehealth Technologies by percent of 84%, and respectively that factor of lack of awareness were a major factor by 90%, factor of this technique may take a new health care system and it may being a time consuming and take a lot of money and training 71%, this previous percentage and frequency also present factor of resistance in both medical social and community. 63% saw that it is hard to get someone qualified as well as 62% saw that there is a lack of human resources in hospitals and misusing factor took a percent of 50%, some of participants saw that There is no strong need for this technique and he is think it is not important or it is not differ from face to face visit by percent of 40%. Conclusion: There are a high acceptance of new technique in hospitals and regardless of demographic information there is a high interest in technology, we determine most factors that may limit implementation of this technique and these factors may give us a general look about challenges of implementing the other techniques too, if we can determine the problems then we can resolve them to achieve high quality healthcare systems in our hospitals. [ABSTRACT FROM AUTHOR]

When randomized trials have addressed multiple interventions for the same health problem, network meta-analyses (NMAs) permit researchers to statistically pool data from individual studies including evidence from both direct and indirect comparisons. Grasping the significance of the results of NMAs may be very challenging. Authors may present the findings from such analyses in several numerical and graphical ways. In this paper, we discuss ranking strategies and visual depictions of rank, including the surface under the cumulative ranking (SUCRA) curve method. We present ranking approaches' merits and limitations and provide an example of how to apply the results of a NMA to clinical practice. [ABSTRACT FROM AUTHOR]

Shortcomings of the conventional PLA synthesis methods have encouraged researchers to investigate on alternative methods for PLA synthesis. Utilization of chain extenders is an effective way to achieve high MW polymers. The concept of using star-shaped resins as the reinforced matrices for biocomposites or in biomedical applications is gaining more and more attention day by day. Star-shaped lactic acid based resins are a class of branched resins with a multifunctional core molecule and lactic acid branches. In order to increase the reactivity of branches, the star-shaped resin oligomers can get end-functionalized which yields in a crosslinkable product. Changing the architecture of a polymer from a linear to a multiarm or hyperbranched one, would change its chemical, diffusional and physical-mechanical properties. This review paper presents the current state and recent advances in the synthesis, characterization, properties and applications of the star-shaped resins made from lactic acid or lactide and multi-hydroxyl core molecules with a focus on the role of the architecture of the polymer on the properties of resins. Rheological, physiochemical and thermomechanical properties of to date synthesized star-shaped resins are compared and discussed. Special emphasis would be made on potential opportunities, probable applications and also gaps and drawbacks concerning these systems. This review aims to provide useful information to help future development of efficient, highly engineered bioresins which can be especially designed for certain applications. [ABSTRACT FROM AUTHOR]

The Sustainable Development Goals (SDGs) have placed great emphasis on the need for much greater social inclusion, and on making deliberate efforts to reach marginalized groups. People with disabilities are often marginalized through their lack of access to a range of services and opportunities. Assistive products can help people overcome impairments and barriers enabling them to be active, participating and productive members of society. Assistive products are vital for people with disabilities, frailty and chronic illnesses; and for those with mental health problems, and gradual cognitive and physical decline characteristic of aging populations. This paper illustrates how the achievement of each of the 17 SDGs can be facilitated by the use of assistive products. Without promoting the availability of assistive products the SDGs cannot be achieved equitably. We highlight how assistive products can be considered as both a mediator and a moderator of SDG achievement. We also briefly describe how the Global Cooperation on Assistive Technology (GATE) is working to promote greater access to assistive products on a global scale. [ABSTRACT FROM AUTHOR]

Agent based modelling is a methodology for simulating a variety of systems across a broad spectrum of fields. However, due to the complexity of the systems it is often impossible or impractical to model them at a one to one scale. In this paper we use a simple reaction rate model implemented using the FLAME framework to test the impact of common methods for reducing model complexity such as reducing scale, increasing iteration duration and reducing message overheads. We demonstrate that such approaches can have significant impact on simulation runtime albeit with increasing risk of aberrant system behaviour and errors, as the complexity of the model is reduced. [ABSTRACT FROM AUTHOR]

This paper is a brief introduction to the different methods used to quantify the enteric methane emission from ruminants. A thorough knowledge of the advantages and disadvantages of these methods is very important in order to plan experiments, understand and interpret experimental results, and compare them with other studies. The aim of the paper is to describe the principles, advantages and disadvantages of different methods used to quantify the enteric methane emission from ruminants. The best-known methods: Chambers/respiration chambers, SF6 technique and in vitro gas production technique and the newer CO2 methods are described. Model estimations, which are used to calculate national budget and single cow enteric emission from intake and diet composition, are also discussed. Other methods under development such as the micrometeorological technique, combined feeder and CH4 analyzer and proxy methods are briefly mentioned. Methods of choice for estimating enteric methane emission depend on aim, equipment, knowledge, time and money available, but interpretation of results obtained with a given method can be improved if knowledge about the disadvantages and advantages are used in the planning of experiments. [ABSTRACT FROM AUTHOR]

This paper describes the once-weekly psychoanalytic psychotherapy of a girl, called Ellie, aged eight at the start of her treatment. Ellie had a learning disability and displayed difficult behaviour at school and at home. In her therapy, Ellie grew in emotional intelligence, more in touch with and able to express her feelings. Her behaviour improved and so did her capacity to learn. In the therapy there were certain limitations to progress and this is discussed in terms of how Ellie's disability affected the basic achievements of emotional development, including a mind with a solid 'reality ego', able to contain anxiety, and able to maintain depressive functioning. The importance of parallel parent work, to share observations and understanding of the child's functioning is discussed. Difficulties for both child and parents in dealing with the pain of difference and how this limits emotional intelligence are discussed. The author hopes that this paper will encourage the offering of psychoanalytic psychotherapy to children and young people with learning disabilities, who are significantly more likely to suffer from mental health problems than their peers. [ABSTRACT FROM AUTHOR]

Abstract: Agriculture is the highest consumer of water resources in Australia. Soil water models play a vital role in agriculture in terms of estimating water use, water allocation and current water status at a given scale. This paper reviews widely-used soil water models developed in Australia over the last three to four decades that have been used to simulate soil water status at various temporal and spatial scales. These models are categorised in terms of their complexity. This paper provides an overview of soil water models and the basic modelling techniques employed by each model. Considerable emphasis is given to matching existing data availability with input data requirements for each model to identify the limitations of model application in terms of data availability. A comprehensive review of the application of soil water models is also given, supported by assessments of individual model performance. The limitations and assumptions made under various approaches to soil water modelling are subsequently examined. Research and policy agencies are focusing more and more on incorporating temporal models into spatial modelling frameworks for natural resources and water management purposes. These are consequently being used much more in the process of policy development. Complex models, whose wide-range application is often hampered by a lack of specific data, should have their processes simplified in order to be accommodated into spatial frameworks where appropriate. Biophysical processes within simple models should consider new data sources and understanding so as to gain more accurate predictions. [Copyright &y& Elsevier]

As is the case for many innovative devices that require a novel user-technology interaction, the question of future consumer acceptance is central for the correct utilization of Advanced Driver Assistance Systems (ADAS). But since acceptance can be determined only after the direct use of the device, information that aims to promote its use should focus on improving initial acceptability before use. Acceptability is the attitude toward a new device before its use, and it can be influenced by information gathered about the device. The aim of the present work is to explore the influence of the quality of information about the device on the acceptability of ADAS. In particular, the paper explores how information about limitations and levels of automation of a advanced collision warning system (CWS) affects initial acceptability of naïve potential future buyers of cars equipped with Advanced Driver Assistance Systems. A total of 527 novice drivers (both male and female) rated a CWS presented as either fully automated with auto-brake or partially-automated and either with or without explicit mention of its use applicability and limitations. Results show that the quantity and quality of information on device-specific features can systematically change the initial acceptability of the safety device. Pleasantness of use and perceived benefits for safety were found to be the most important factors for the novice drivers. [ABSTRACT FROM AUTHOR]

In this paper, limiting factors for increased use of biomethane as a transportation fuel are studied. The aim of this research is to recognize and estimate the limiting factors for biomethane utilization in the transportation sector. The limiting factors are studied by using calculation models from Life cycle perspective and literature reviews. According to the results, the main limiting factors can be classified into the following categories: production potential, technology, economy or policy. For biomethane utilization in Finland, the main limiting factors seem to be the lack of distribution infrastructure in northern parts of the country and the uncertain economical feasibility for agricultural biomass producers and for vehicle owners. From the political perspective, the external costs for petrol operated vehicles are higher than for biomethane operated vehicles. Reductions from the external costs could be used by political decisions as a base to support the growth of biomethane in the transportation sector which could lead to GHG emission reductions. A similar systematic approach can also be used to study limiting factors for other transportation energy systems. [ABSTRACT FROM AUTHOR]

This paper aims to highlight the induced stress occurring under static load in the real-size optimized structure of the double bottom of a chemical tanker. Also, it shortly presents an algorithm of the constructive and functional optimization through the finite element method, numerical modeling of the double bottom structure for the real-size ship with continuous and discontinuous welding being due to be achieved. [ABSTRACT FROM AUTHOR]

• Review current research status of virtual water from different aspects. • Review virtual water from the perspective of accounting methods, impact assessment and limitations. • The controversy about virtual water is discussed. • Some hot issues about virtual water research are pointed out. The concept of virtual water was first proposed by the geographer Tony Allan in 1993, referring to the amount of water needed to produce products and services. Research on virtual water has gradually increased in recent years. This paper explored the current research status of virtual water from the aspects of virtual water accounting methods, impact assessment, and research limitations and gaps. In terms of research methods, in addition to continuing to use traditional virtual water accounting methods, recent research also focuses on the use of input-output model to calculate virtual water content, the scenario analysis methods to predict future virtual water flow trends, and the gravitational model to analyze driving factors. The research content has also gradually diversified, from quantifying the virtual water content of commodities and analyzing virtual water flow paths, it has gradually evolved into "temporal and spatial evolution of virtual water trade, research combined with water footprint, virtual water and economic development, virtual water impact assessment, analysis of virtual water flow driving force" and other research content. The prediction and driving factors analysis of virtual water need further research; the availability and accuracy of data must be ensured. So virtual water research still needs to be improved and perfected. Virtual water research is an interdisciplinary discipline involving hydrology, socio-economy, and the ecological environment, so future research should be conducted in conjunction with relevant knowledge in other disciplines. And researching the impacts of virtual water trade on the formulation of regional trade policies and the regional ecological environment will provide a powerful reference for policy makers on the adjustment of regional trade patterns and management of water resources. This paper can provide reference for virtual water researchers. [ABSTRACT FROM AUTHOR]

Published in 1999, McMichael's "Prisoners of the Proximate: Loosening the Constraints on Epidemiology in an Age of Change" (Am J Epidemiol. 1999;149(10):887-897) outlined an exciting vision for epidemiology as the field that that can help us better understand the drivers of population health so that we may intervene, paving the way for healthier populations. McMichael's paper remains today what it was when it was first published: clear, thoughtful, provocative, and usefully prescriptive in its call to action. McMichael identified 4 constraints facing epidemiology. The field has risen to this challenge and addressed some of these constraints. I discuss how successful (or not) we have been in addressing each of these 4 challenges. [ABSTRACT FROM AUTHOR]

Purpose – Usability studies are a form of library evaluation that are often passed off as research. However, at its core, usability is an evaluation method, not a research method. The goal is to make an argument that usability studies can be a valid form of scholarly research if certain limitations inherent in usability studies are addressed in the research design. Design/methodology/approach – Through evaluating literature in the social sciences, this paper makes an argument for usability as a research method if certain limitations inherent within usability testing are addressed. Findings – Usability is not only an evaluation method, but when limitations are addressed; it can be considered an important research tool within libraries. Originality/value – No other article in the library and information sciences literature talks about methodologies for usability. Most usability articles do not address methodologies utilized in a way that would be considered research in a broader social sciences context. This article bridges the gap from when usability is considered evaluation to when it is considered research within library science. [ABSTRACT FROM AUTHOR]

The paper considers the general problems of optimization of parameters of a vehicle at the design stage. The approaches to the solution of the task are set out. The questions of a choice of the objective function and the system of limitations are in focus, as the problem of optimization makes sense, if there are several possible variants of its solution. [ABSTRACT FROM AUTHOR]

Abstract: There have been major improvements in instrumentation, field survey design and data inversion techniques for the geoelectrical method over the past 25years. Multi-electrode and multi-channel systems have made it possible to conduct large 2-D, 3-D and even 4-D surveys efficiently to resolve complex geological structures that were not possible with traditional 1-D surveys. Continued developments in computer technology, as well as fast data inversion techniques and software, have made it possible to carry out the interpretation on commonly available microcomputers. Multi-dimensional geoelectrical surveys are now widely used in environmental, engineering, hydrological and mining applications. 3-D surveys play an increasingly important role in very complex areas where 2-D models suffer from artifacts due to off-line structures. Large areas on land and water can be surveyed rapidly with computerized dynamic towed resistivity acquisition systems. The use of existing metallic wells as long electrodes has improved the detection of targets in areas where they are masked by subsurface infrastructure. A number of PC controlled monitoring systems are also available to measure and detect temporal changes in the subsurface. There have been significant advancements in techniques to automatically generate optimized electrodes array configurations that have better resolution and depth of investigation than traditional arrays. Other areas of active development include the translation of electrical values into geological parameters such as clay and moisture content, new types of sensors, estimation of fluid or ground movement from time-lapse images and joint inversion techniques. In this paper, we investigate the recent developments in geoelectrical imaging and provide a brief look into the future of where the science may be heading. [Copyright &y& Elsevier]

Fertility, one of the fundamental characteristics of a soil, has developed over time along with the soils formation and evolution. A number of factors act upon the fertility, limiting and/or degradation processes represented by some soil characteristics and/or environmental factors that lead to its diminishment thus reducing the production capacity of such lands. Conservation of soil fertility implies identifying the limiting factors and the degradation processes, determining their degree of intensity and land area affected. Identification of soil units in the middle basin of the river Bega was based on existing data and Agrochemical Soil Survey Office. Because soil studies are developed by administrative territories, for the purpose of obtaining an overall situation of the middle basin of the river Bega, all types of soil surfaces, within their respective territories, were summarized. Limiting factors and degradation processes, specific to each soil unit, were later determined for the entire region, an area of 49522.37 ha. Very different physical and geographical conditions of the area studied, determined the formation of a complex range of soils, belonging to 6 classes and 13 types of soils. Bega River Middle Basin overlaps the hills area, typical of this area are luvisols (59.43%), hidrisols (10.22%), protisols (8.32%), on other not so extended areas there are cambisols, antrisols and pelisols. On the soils mentioned are acting one or more limiting factors of agricultural production: small reserves of humus, soil reaction, compactness, reduced edaphic useful volume, soil hardness, slope, surface and deep erosion, landslides, land covering (with rocks and boulders) and terrain (land) uniformity, excessive surface humidity and excessive phreatic humidity, each affecting differently the varying soil units. This paper presents the areas affected by each limiting factor relative to the total agricultural area, mentioning that a unit of soil is generally affected by the simultaneous action of several limiting factors and/or degradation processes. [ABSTRACT FROM AUTHOR]

Research investigating the potential of producing biofuels from algae has been enjoying a recent revival due to heightened oil prices, uncertain fossil fuel sources and legislative targets aimed at reducing our contribution to climate change. If the concept is to become a reality however, many obstacles need to be overcome. Recent studies have suggested that open ponds provide the most sustainable means of cultivation infrastructure due to their low energy inputs compared to more energy intensive photobioreactors. Most studies have focused on strains of algae which are capable of yielding high oil concentrations combined with high productivity. Yet it is very difficult to cultivate such strains in open ponds as a result of microbial competition and limited radiation-use efficiency. To improve viability, the use of wastewater has been considered by many researchers as a potential source of nutrients with the added benefit of tertiary water treatment however productivity rates are affected and optimal conditions can be difficult to maintain year round. This paper investigates the process streams which are likely to provide the most viable methods of energy recovery from cultivating and processing algal biomass. The key findings are the importance of a flexible approach which depends upon location of the cultivation ponds and the industry targeted. Additionally this study recommends moving towards technologies producing higher energy recoveries such as pyrolysis or anaerobic digestion as opposed to other studies which focused upon biodiesel production. [ABSTRACT FROM AUTHOR]

One of the major issues of concern in the international organizations of human rights is the protection of places of worship against attacks of other groups or governments. The first part of this paper analyzes the documents of United Nation, European Union or Council of Europe organizations dealing with human rights. The result of the research offers a precise map of the hot spots of religious intolerance along the world. Main aspects of religious liberty, as the access to places of worship, the peaceful reunion inside them or the conservation, are infringed. The second part focuses on the European Court of Human Rights cases dealing with places of worship. We could notice how the Court analyzes carefully conditions and limitations of the establishment of places of worship in several European States, examining accomplishment with the minimum standards of the right of religious freedom enshrine in article 9 of the European Convention. [ABSTRACT FROM AUTHOR]

Abstract: Background and aim: Oesophageal cancer (OC) is a highly aggressive tumour with unfavorable prognosis due to early stages metastases. Treatment and survival rates are highly correlated with tumour wall invasion, lymphatic involvement and metastatic spread. Thus, an accurate staging at initial diagnosis is fundamental for optimal management. In the present review article the potential role of the FDG-PET in the staging of OC is discussed. Methods: A systematic review of all papers published in PubMed until June 2010 was performed. Results: Endoscopic ultrasound (EUS) is helpful for T and N staging but not for M staging. CT plays a complementary role to EUS in T staging, especially in excluding T4 disease. However, in N staging, CT relies on “size criteria” (<1cm=benign, >1cm=malignant) which reduces its sensitivity and specificity. FDG-PET has been demonstrated to be a very helpful tool in staging and re-staging OC. Most OCs demonstrate high FDG accumulation and are usually well detected with PET. Unfortunately, PET cannot reveal very small lesions due to its limited spatial resolution, therefore limiting the usefulness of PET in T staging. In N staging, an FDG positive node is highly likely to contain disease. However, FDG-PET cannot reliably separate the primary site from closely adjacent nodes. The real and unquestionable additional diagnostic value of FDG-PET in comparison to CT and EUS is in evaluating distant metastases. Conclusions: It appears reasonable to include FDG PET/CT in the diagnostic algorithm of patients with OC in order to better define the optimal therapeutic approach. [Copyright &y& Elsevier]

The progressive deployment of market-oriented regulatory frameworks in mass Higher Education Institutions (MHEI hereafter) triggered, in a wide variety of forms and degrees, the application of Knowledge Management principles in MHEI. This means the application of the knowledge 'codification strategy', where the focus is on the economies of the re-use of centrally developed knowledge through codifying, storing and distributing knowledge. This process however, presents significant challenges. Both knowledge and non-knowledge related aspects might constrain the application of knowledge codification strategies in MHEI. The aim of this paper is to better understand the application of knowledge codification strategies in MHEI, from a knowledge management perspective. This is done by examining the use of course outlines as the critical means to 'transfer' codified knowledge. The research site was a MHEI that explicitly followed a 'codification strategy', where the profits come from the economies of scale and low cost operation. Research findings point out mixed outcomes. The set of cost-saving managerial-oriented initiatives together with the deployment of knowledge codification strategies simultaneously supported the knowledge transfer of codified-oriented courses associated to low levels of tacit knowledge and constrained knowledge transfer of codified-oriented courses associated with slightly higher levels of tacit knowledge. This finding can be credited to a set of both knowledge and non-knowledge related issues. The implications for the management of knowledge in MHEI were explored. [ABSTRACT FROM AUTHOR]

Abstract: One of the most important methods of saving energy in a building is by carefully designing its facade. A ‘double skin façade’ is optimally one of the best options in managing the interaction between the outdoors and the internal spaces. It also provides some architectural flexibility to the design. Recently it has received much attention as opposed to the more typically glazed curtain wall. This is because of its ability to efficiently reduce energy and therefore saves cost. The amount of energy saved depends on the climate and the design chosen. The design of the DSF involves decisions on geometric parameters, glass selection, ventilation strategy, shading, daylighting, aesthetics, wind loads, and maintenance and cleaning cost expectations. DSF has an impact on several aspects of the design phase of a building. For example, thermal properties, acoustic characteristics and daylighting are affected in the exploitation phase of the building. In addition, in terms of building safety point of view, fire propagation maintenance or glazing thermal break must be taken into account. Currently, little work has been done on the behaviour of DSFs in hot and humid climates. This paper shall review previous studies made on double skin façade systems (DSFS) in buildings. [Copyright &y& Elsevier]

Return on Investment (ROI) is one of the most popular performance measurement and evaluation metrics used in business analysis. ROI analysis (when applied correctly) is a powerful tool for evaluating existing information systems and making informed decisions on software acquisitions and other projects. Decades ago, ROI was conceived as a financial term and defined as a concept based on a rigorous and quantifiable analysis of financial returns and costs. At present, ROI has been widely recognized and accepted in business and financial management in the private and public sectors. Wide proliferation of the ROI method, though, has lead to the situation today where ROI is often experienced as a non-rigorous, amorphous bundle of mixed approaches, prone to the risks of inaccuracy and biased judgement. The main contribution of this study is in presenting a systematic view of ROI by identifying its key attributes and classifying ROI types by these attributes. ROI taxonomy has been developed and discussed, including traditional ROI extensions, virtualizations, and imitations. All ROI types are described through simple real life examples and business cases. Inherent limitations of ROI have been identified and advice is provided to keep ROI-based recommendations useful and meaningful. The paper is intended for researchers in information systems, technology solutions, and business management, and also for information specialists, project managers, program managers, technol-ogy directors, and information systems evaluators. [ABSTRACT FROM AUTHOR]

The objective of this paper was to systematically review published studies to determine if disability limits access to health care and to attempt to identify what body functions, structures and activities and participation, as well as contextual factors (environmental and personal factors), interact with the health condition to limit this access. The AMED, CINAHL, EMBASE, Medline and psychINFO databases were searched for original study articles in English, dating from 1974 to 2008. Review articles and expert opinion were excluded. Each study had two independent reviews by either a general practitioner or specialist in rehabilitation medicine. Each study was critically appraised according to the National Service Framework for Long-term Conditions (Department of Health, 2005a) methodology and recorded on standardised data extraction sheets. Studies of poor quality were excluded. Sixty studies were included. No randomised controlled trials were identified. Studies broadly fell into the following three main groups: database studies (n=27), quantitative surveys (n=20) and qualitative interviews (n=13). Disabled people are restricted in accessing health care and report less satisfaction with their medical care. Many of the identified studies were from the United States (US) and based on subjective reporting. More objective evidence is needed, especially in the UK, to clarify the true level of access to health care in people with disabilities. The complex, interdependent factors in providing health care to disabled people require complex solutions. [ABSTRACT FROM AUTHOR]

Abstract: Silicon-air battery utilizing a single-crystal heavily doped n-type silicon wafer anode and an air cathode is reported in this paper. The battery employs hydrophilic 1-ethyl-3-methylimidazolium oligofluorohydrogenate [EMI·(HF)2.3F] room temperature ionic liquid electrolyte. Electrochemical studies, including polarization and galvanostatic experiments, performed on various silicon types reveal the predominance performance of heavily doped n-type. Cell discharging at constant current densities of 10, 50, 100 and 300μAcm−2 in ambient atmosphere, shows working voltages of 1.1–0.8V. The study shows that as discharge advances, the moist interface of the air electrode is covered by discharge products, which prevent a continuous diffusion of oxygen to the electrode–electrolyte interface. The oxygen suffocation, governed by the settlement of the cell reaction products, is the main factor for an early failure of the cells. Based on the results obtained from scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy studies, we propose a series of reactions governing the discharge process in silicon-air batteries, as well as a detailed mechanism for silicon oxide deposition on the air electrode porous carbon. [Copyright &y& Elsevier]

In this paper the use of Creative Commons (CC) is questioned. That is done by concentrating on the following question: what is CC, in which circumstances is CC useful and what are its drawbacks? Does CC solve any problems or is there a need to change copyright laws and treaties to accommodate this use of copyright? [ABSTRACT FROM AUTHOR]