Academic literature on the topic 'Restricted access and full embargo'
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Journal articles on the topic "Restricted access and full embargo"
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Martorana, Margherita, Tobias Kuhn, Ronald Siebes, and Jacco van Ossenbruggen. "Aligning restricted access data with FAIR: a systematic review." PeerJ Computer Science 8 (July 20, 2022): e1038. http://dx.doi.org/10.7717/peerj-cs.1038.
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Understanding the complexity of restricted research data is vitally important in the current new era of Open Science. While the FAIR Guiding Principles have been introduced to help researchers to make data Findable, Accessible, Interoperable and Reusable, it is still unclear how the notions of FAIR and Openness can be applied in the context of restricted data. Many methods have been proposed in support of the implementation of the principles, but there is yet no consensus among the scientific community as to the suitable mechanisms of making restricted data FAIR. We present here a systematic literature review to identify the methods applied by scientists when researching restricted data in a FAIR-compliant manner in the context of the FAIR principles. Through the employment of a descriptive and iterative study design, we aim to answer the following three questions: (1) What methods have been proposed to apply the FAIR principles to restricted data?, (2) How can the relevant aspects of the methods proposed be categorized?, (3) What is the maturity of the methods proposed in applying the FAIR principles to restricted data?. After analysis of the 40 included publications, we noticed that the methods found, reflect the stages of the Data Life Cycle, and can be divided into the following Classes: Data Collection, Metadata Representation, Data Processing, Anonymization, Data Publication, Data Usage and Post Data Usage. We observed that a large number of publications used ‘Access Control‘ and ‘Usage and License Terms’ methods, while others such as ‘Embargo on Data Release’ and the use of ‘Synthetic Data’ were used in fewer instances. In conclusion, we are presenting the first extensive literature review on the methods applied to confidential data in the context of FAIR, providing a comprehensive conceptual framework for future research on restricted access data.
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Haider, Zaglul. "Biharis in Bangladesh and Their Restricted Access to Citizenship Rights." South Asia Research 38, no. 3_suppl (August 23, 2018): 25S—42S. http://dx.doi.org/10.1177/0262728018791695.
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The Urdu-speaking Biharis of Bangladesh have been facing obstructions in enjoying full citizenship rights since Bangladesh gained independence from Pakistan in 1971. This minority, living on the fringes of Bangladeshi society, still mostly in camps, experiences discrimination particularly in obtaining passports and other travel and identity documents, despite legal assertions that they are citizens. Using theoretical and empirical research, the article seeks to identify the extent of this denial of sociopolitical and legal rights. The research finds discriminatory policies and practices in public service delivery at local levels, regarding access to public education and employment, but especially concerning passports and driver’s licences. This supports a conclusion that the Biharis of Bangladesh remain even today effectively stateless. Not fully protected by the bureaucratic state structures that should be engaged in non-discriminatory public service delivery, they are defrauded of basic rights and equal opportunities, notably the freedom to travel.
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Huh, Sun. "PubMed Central as a platform for the survival of open-access biomedical society journals published in Korea." Science Editing 8, no. 2 (August 20, 2021): 153–58. http://dx.doi.org/10.6087/kcse.247.
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Twenty-one years have passed since PubMed Central (PMC) launched. The present case study describes Korean editors’ history of participation in PMC and their contributions to PMC. The three main turning points in the history of Korean editors’ involvement with PMC were as follows: first, the production of PMC XML files and deposition starting in 2008; second, thorough evaluations of applying journals since 2014; and third, the feasibility of non-English journals being indexed in PMC starting in 2019. The importance of PMC is further shown by the fact that KoreaMed Synapse, a full-text XML database of biomedical journals in Korea that was launched in 2007, was created by benchmarking PMC. Scholarly societies or institutes publish 724 (34.2%) of the 2,119 PMC journals without embargo in June 2021. Out of those 724 journals, 127 (17.5%) are published in Korea. PMC has helped local journals receive more citations from researchers worldwide, increasing their likelihood of being indexed in international databases. The number of submissions from international researchers has increased, thereby making it possible for journals to achieve international diversity. As the best full-text platform of biomedical journals, PMC has provided an excellent opportunity for biomedical journal editors in Korea to change their journals’ language to English and produce full-text JATS (Journal Article Tag Suite) XML files. These factors have made Korea the second-ranked country in terms of no-embargo PMC journals published by academic societies or institutes.
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Behrend, Dawn. "CINAHL Ultimate." Charleston Advisor 24, no. 3 (January 1, 2023): 14–18. http://dx.doi.org/10.5260/chara.24.3.14.
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The Cumulative Index to Nursing and Allied Health Literature (CINAHL) Ultimate is a subscription aggregate health and allied health sciences database available exclusively from EBSCO. CINAHL Ultimate is the premier product in a lineup of five tiered versions, including CINAHL, CINAHL with Full Text, CINAHL Plus with Full Text, and CINAHL Complete. The database is widely used by educators, students, researchers, and practitioners. CINAHL Ultimate is valued for its substantial indexing of publications core to the nursing and allied health field, use of the MeSH structure for subject headings, and numerous options for advanced searching specific to the needs of the health sciences. The collection indexes more than 3,800 journals beginning in 1937, with 925 being offered full text from non‐open access journals and with a substantial number with no embargo. In particular, the number of full-text, peer-reviewed journals with no embargo available from non‐open access sources is a significant upgrade from CINAHL Complete, and one that may very likely justify the additional investment. Value-added features include accredited continuing education modules, evidence-based care sheets, and quick lessons. With contributing publishers from 73 countries, the majority hail from the United States and the United Kingdom. Some potential drawbacks for those considering CINAHL Ultimate may be the lack of video-based continuing education content and source material beyond academic journals, as well as the limited emphasis on international perspectives; such perspectives may be more evident in competitors such as ProQuest’s Nursing & Allied Health Premium and MEDLINE Ultimate.
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Millhorn, Jim. "Sociology Source Ultimate." Charleston Advisor 21, no. 2 (October 1, 2019): 37–39. http://dx.doi.org/10.5260/chara.21.2.37.
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EBSCO’s Sociology Source Ultimate is the latest iteration of SocIndex and SocIndex full-text. The database purports to offer the broadest purview of sociological research and related literature. Sociology Source Ultimate stands out from its predecessors in the degree and extent of its full text journal offerings including 1,072 full-text journals of which 1,009 are peer reviewed, 647 peer reviewed without embargo, and 601 full text offerings that are covered by either Web of Science or Scopus. In addition, the database offers full-text access to thousands of monographs, edited volumes, conference papers and proceedings, reports, working papers, etc. Subject coverage ranges from deviant behavior to gender identity to social movements. A particularly notable feature of the database is its expansive coverage of international and foreign language journals.
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Shevchenko, Maryna, and Alla Solianyk. "The State of Digitization of Documentary Heritage in Scientific Libraries of Ukraine." Knygotyra 79 (January 1, 2023): 223–49. http://dx.doi.org/10.15388/knygotyra.2022.79.126.
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Based on the survey results of the leading scientific libraries of Ukraine, the article reveals the current trends in the digitization of library collections. The authors explore the current state of search services for digitized documents by libraries; user access modes to digital copies of documents (public, restricted, local); the ways to register the users for access to full-text digital repositories. The necessity of adopting the National Program for Digitization of Documentation Heritage and its implementation at the corporate level is substantiated. Recommendations for improving the efficiency of digitization of documents by libraries of Ukraine, improving search tools and user-friendly access to digital repositories are given.
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Smits, Nathalie G. E., Toine F. H. Bovee, Sidharam P. Pujari, Leendert A. van Ginkel, Michel W. F. Nielen, and Bauke Albada. "Microsphere Peptide-Based Immunoassay for the Detection of Recombinant Bovine Somatotropin in Injection Preparations." Biosensors 12, no. 3 (February 22, 2022): 138. http://dx.doi.org/10.3390/bios12030138.
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The use of peptides in immunoassays can be favored over the use of the full protein when more cost effective or less toxic approaches are needed, or when access to the full protein is lacking. Due to restricted access to recombinant bovine somatotropin (rbST), a protein enhancing growth and lactating performances of livestock, which use has been banned in the EU, Canada and Australia (amongst others), we developed a peptide-based biorecognition assay on an imaging planar array analyzer. For this, we identified the rbST epitope that is responsible for binding to the rbST-targeting monoclonal antibody 4H12 (MAb 4H12) to be 115DLEEGILALMR125. This linear peptide was synthesized and coupled to microspheres, after which it was tested in a biorecognition competitive inhibition assay format. We observed IC50 values of approximately 0.11 μg mL−1, which are lower than observed for the full rbST protein (IC50 = 0.20 μg mL−1). Importantly, there was no binding with the scrambled peptide. Preliminary results of directly coupled peptides in a microsphere biorecognition assay for detection of rbST are presented. Real-life applicability for detection of somatotropins (STs) in injection preparations of bovine-, porcine- and equine ST are shown. This newly developed immunoassay strongly supports future developments of peptide-based immunoassays to circumvent the limited access to the full protein.
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Nicolaisen, Heidi. "Increasingly Equalized? A Study of Part-Time Work in ‘Old’ and ‘New’ Part-Time Work Regimes." Nordic Journal of Working Life Studies 1, no. 1 (January 1, 2011): 95. http://dx.doi.org/10.19154/njwls.v1i1.2337.
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Recent debates on equalization of part-time work alongside full-time work stress the importance of high quality part-time jobs. This paper compares equalization in banking in three countries: two `old´ part-time work regimes, Norway and Sweden, and Ireland, where part-time work started to increase more recently. Banking is particularly interesting as a sector with a high proportion of female employment and good working conditions. One main interest is the role of regulations and how they are enforced at company level. The analysis shows that part-time work in the Nordic countries is normalized in terms of access and general work conditions, while in Ireland access is more restricted. Career opportunities are, however, restricted in all three countries. This paper argues that further equalization may be hindered by `soft´ regulations and a gradual normalization process that also normalizes disadvantages associated with part-time work and the category of the `working mother´.
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Stamatiou, Yannis C., Constantinos Halkiopoulos, Athanasios Giannoulis, and Hera Antonopoulou. "Utilizing a Restricted Access e-Learning Platform for Reform, Equity, and Self-development in Correctional Facilities." Emerging Science Journal 6 (December 28, 2022): 241–52. http://dx.doi.org/10.28991/esj-2022-sied-017.
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Objectives: The goal of this paper is to address the issues that arose because of the exclusion of law offenders in the Greek Correctional Institutions from second chance education during the COVID-19 pandemic. During this period, the offenders were deprived of their right to equal access to second-chance education since the pandemics blocked mobility and close contact with teaching personnel. Methods/Analysis: In this paper, we propose a framework based on the Technology Acceptance Model (TAM) that will be deployed to evaluate the acceptance of the CILMS by the learners in Correctional Institutions. We describe a methodology and a set of hypotheses that can reveal the intention of learners to use the system based on several factors, such as trust, perception of privacy, perception of usefulness, and perception of self-efficacy. Findings: We suggest that eLearning and limited Internet access should be added to the list of fundamental human rights for CI detainees as well, in order to counteract their separation from physical society. Inmates are still individuals. In fact, they should be placed in solitary confinement as prescribed by the law. Novelty/Improvement:This viewpoint has been demonstrated with the development and evaluation of acceptance by inmates through the TAM technology acceptance methodology, as well as the proposal of a generic privacy-preserving Web information and services access model for CIs that can, at the same time, provide sufficient information access freedom while respecting the restrictions that should be imposed on such an access for CI inmates. Doi: 10.28991/ESJ-2022-SIED-017 Full Text: PDF
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Tournadre, Nicolas, and Randy J. LaPolla. "Towards a new approach to evidentiality." Linguistics of the Tibeto-Burman Area 37, no. 2 (December 1, 2014): 240–63. http://dx.doi.org/10.1075/ltba.37.2.04tou.
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Evidentiality is often defined as the grammatical means of expressing information source. This paper argues for a broader definition of evidentials, as close work documenting languages has shown that simply saying evidentials mark source of information does not capture all of the actual uses of evidential marking. The paper discusses other aspects that need to be taken account of in any full discussion of the use of evidential marking, in particular the speaker’s access to information (not just source), plus the subjective strategy or perspective of the speaker in representing a particular state of affairs. The notion of ‘source’ in this paper is used in a restricted sense to mean primarily a verbal source of information (reported information) and is distinguished from ‘access’, which refers to the non-verbal access to information (sensory, inferential, etc., including the sensory access to verbal source) available to the speaker, though marking of source and access may appear together. Given this distinction the paper proposes a new definition of evidential marking: the representation of source and access to information according to the speaker’s perspective and strategy.
Dissertations / Theses on the topic "Restricted access and full embargo"
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Cyr, Hélène. "The impact of restricted access to atmospheric oxygen on the survival and development of Aedes aegypti (Diptera:Culicidae) pre-imagos /." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=80246.
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Reduced access to atmospheric oxygen greatly increased early instar Aedes aegypti mortality. Data suggest that death was by drowning mainly because slow swimming speed and low visual acuity delayed larvae from finding access to air. Late instar larvae experienced developmental delays when food depletion in the immediate vicinity of the breathing site forced them to forage farther away. As the distance between feeding and breathing sites increased, feeding efficiency of fourth instars may have declined enough to reduce their pupation success and to cause increased pupal mortality, reduced adult emergence and sex ratio skewed in favour of males among emerging functional adults. Thus reduced access to atmospheric oxygen at the pre-imago level may reduce the vectorial capacity of emerging adult population.
Books on the topic "Restricted access and full embargo"
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Krueger, Roberta. Towards Feminism: Christine De Pizan, Female Advocacy, and Women’s Textual Communities in the Late Middle Ages and Beyond. Edited by Judith Bennett and Ruth Karras. Oxford University Press, 2013. http://dx.doi.org/10.1093/oxfordhb/9780199582174.013.031.
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Although "feminist" claims for full legal and political emancipation were nonexistent in the Middle Ages and women had restricted access to education, many elite women throughout Europe left eloquent written testimony of their intellectual and literary gifts. Some women explicitly took up the pen to defend women's honor against misogynistic attacks and to champion their contributions to society. This chapter focuses on the pro-feminine works of Christine de Pizan (1364–1430?), who not only engaged in an epistolary debate with male authorities denouncing the Romance of the Rose as antifeminist, but also wrote two works explicitly defending female virtue and promoting women's social well-being: The City of Ladies and The Treasure of the City of Ladies. Christine's work participated in the spread of women's literacy; her female advocacy anticipated arguments for women's education and critiques of marriage made by subsequent female humanists and early modern women writers in France, Italy, and England.
Book chapters on the topic "Restricted access and full embargo"
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Eriksson, Kristina, Abdlkarim Alsaleh, Shervin Behzad Far, and David Stjern. "Applying Digital Twin Technology in Higher Education: An Automation Line Case Study." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220165.
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Production systems are being expanded to include Digital Twins (DTs) as part of increased industrial digitalization. DTs can bring benefits e.g., increase visibility, safety, and accessibility of the system. Further, digital experimentation can reduce time and cost. Though, application of DT technologies involves challenges i.e., model accuracy or errors in transferring data or codes between the DT and the physical twin. Many studies on DTs focus on industrial applications. However, DT technology has potential for implementation of digital labs in education. This aspect of DTs is of rising importance as distance education has increased over the last decade and access to physical laboratories can be restricted due to factors such as the Covid-19 pandemic. Thus, there is a need to study the use of DT technology in higher education. To address this, we investigate possibilities and challenges of applying DT technology in education to conduct industrial-like labs virtually. A case of an automation line, with full scale industrial equipment, based at a research center, is focused. Results emphasize that the application of DT technologies require multi-domain expertise to understand the consequences of every single decision in the design process on every piece of equipment involved, making the modelling process complex and time consuming. Thus, when applied in education, test procedures need to be designed to focus on students’ motivation, improved learning and understanding of production systems. DTs are considered enabling technologies supporting the concept of Industry 5.0, thus stressing the human-centric aspects of advancing Industry 4.0. The predicted application of DTs emphasizes the need for educational curricula that include laboratory applications and theoretic understanding of DT technologies. This study focusses the application of DT technologies in higher education curricula, but the result of the study can contribute to other areas such as automation and virtual commissioning towards smarter manufacturing.
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Ling, Roger, Paul Arthur, Georgia Clarke, Estelle Lazer, Lesley A. Ling, Peter Rush, and Andrew Waters. "I 10, 7: Casa del Fabbro." In The Insula of the Menander at Pompeii: Volume 1: The Structures. Oxford University Press, 1997. http://dx.doi.org/10.1093/oso/9780198134091.003.0019.
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In its present form the casa del fabbro is an attenuated and relatively cramped property. Not only is the width of its atrium complex so restricted as to allow space for only two narrow cubicula and a small.storeroom on one side, but the space to the east of the fauces has been detached to form part of a separate property (1 10, 6). At the rear, apart from a portico (10) with a kitchen (11) partitioned off at one end of it, there are no rooms beyond the line of the tablinum, merely a small garden enclosed by a blind wall. The full complement of living rooms on the ground floor consists, therefore, if we exclude the atrium (3), of a room occupied by a stair and a latrine (1) and a small cubiculum (2) to the west of the fauces, the two cubicula (4 and 5) and the storeroom (6) to the west of the atrium, the tablinum (7), and two larger rooms flanking it, one of which may have served as a cubiculum (8) and the other as a dining-room (9). The remaining living space was all upstairs. Here the only rooms which can definitely be identified are a series of four or five small chambers above rooms 1-2 and 4-6; but it is probable that there were further rooms above rooms 8 and 9, as well as the tablinum. Whether the house retained an upper floor over the space which had been ceded at its north-east corner, we have no means of telling (cf. p. 145). All this represents a contraction from earlier days, when the house had been interconnected with the Casa del Menandro, and the portico and garden area offered access to the rear (pp. 55, 79-81). That the house had come on harder times, or at least that it had passed into the hands of an owner or tenant with different cultural standards, is suggested by the decorations. The sole remaining fine-quality decorations are those of the late Third Style in rooms 8 and 9: redground wall-paintings with mythological pictures and black-ground ceiling-paintings in the former, and black wall-paintings with mythological landscapes and a painted cocciopesto pavement containing geometric patterns of tesserae in the latter.
Conference papers on the topic "Restricted access and full embargo"
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Saeed, Abubaker, Jarl André Fellinghaug, and Brett Bouldin. "Wireless Coiled Tubing Disrupts the Industry by Enabling Use of Conventional Coil Tubing for Access and Matrix Acidizing of Multilaterals and Extended Reach Carbonate Reservoirs." In Abu Dhabi International Petroleum Exhibition & Conference. SPE, 2021. http://dx.doi.org/10.2118/208116-ms.
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Abstract As the number of Extended Reach Wells (ERW) with multilaterals and restricted access due to electric submersible pumps (ESP) increases, so does the challenge to enable access and stimulation to these wells to maintain production rates. This paper describes a Slim Access and Stimulation System (SASS) development program launched to develop a game changing technology to give operators the ability to maintain high production rates in unconventional developments. There is available technology today to accurately access extended reach lateral wells, even with restricted access. But the technology is limited to logging only, as the tools and/or control wire are not acid resistant and would limit the pump rate through the coil tubing for pumping acid. The new system would require a tool suite which was acid resistant, enable slim access to the laterals, and have the ability to perform multiple stimulation jobs in one run, with monitoring and control from surface without a wire inside the coiled tubing. The SASS development program gave birth to three separate and revolutionary new technologies: two-way wireless communication and energy harvesting with integrated production logging suite, slim and high-power open hole tractor with a wire bypass to power the tool string, and semi-autonomous lateral access sub, which finds, enters, and confirms the lateral access. The three game changing technologies have application as standalone products, however the real value occurs when they combined as a Slim Access and Stimulation System, run on conventional coiled tubing. The paper will describe working methods and technology incorporated to provide access to restricted extended reach laterals and perform multiple stimulation jobs in a single run. The SASS development program is a testament of how the industry can tackle complex challenges, introducing new technologies across in multiple domains while still adapting to conventional methods. The paper highlights the full system design approach method used to understand and combine features of downhole tools, surface equipment, and operational and handling routines to achieve the overall design goal.
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Hutchins, Andrew R., James D. Kribs, Richard D. Muncey, and Kevin M. Lyons. "Assessment of Stabilization Mechanisms of Confined, Turbulent, Lifted Jet Flames: Effects of Ambient Coflow." In ASME 2013 Power Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/power2013-98033.
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The aim of this investigation is to determine the effects of confinement on the stabilization of turbulent, lifted methane (CH4) jet flames. A confinement cylinder (stainless steel) separates the coflow from the ambient air and restricts excess room air from being entrained into the combustion chamber, and thus produces varying stabilization patterns. The experiments were executed using fully confined, semi-confined, and unconfined conditions, as well as by varying fuel flow rate and coflow velocity (ambient air flowing in the same direction as the fuel jet). Methane flames experience liftoff and blowout at well-known conditions for unconfined jets, however, it was determined that with semi-confined conditions the flame does not experience blowout. Instead of the conventional unconfined stabilization patterns, an intense, intermittent behavior of the flame was observed. This sporadic behavior of the flame, while under semi-confinement, was determined to be a result from the restricted oxidizer access as well as the asymmetrical boundary layer that forms due to the viewing window. While under full confinement the flame behaved in a similar method as while under no confinement (full ambient air access). The stable nature of the flame while fully confined lacked the expected change in leading edge fluctuations that normally occur in turbulent jet flames. These behaviors address the combustion chemistry (lack of oxygen), turbulent mixing, and heat release that combine to produce the observed phenomena.
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Fellingham, Lorimer, Philippe Michou, and Bruno Alquier. "Assessment of the Impact of Restricted Transport on the Management of Spent Fuel in North-West Russia." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4902.
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The Murmansk and Arkhangelsk regions of north-west Russia produce large amounts of spent nuclear fuel. These arise from the Kola Nuclear Power Plant, nuclear propulsion units in icebreaker and container ships of the Murmansk Shipping Company, but mostly from the submarines of the Russian Navy’s Northern Fleet. Many marine vessels have been withdrawn from service, but retain their final fuel charges. There are more than 300 reactors and 57500 spent fuel assemblies. Some fuel has been sent to the RT-1 reprocessing plant at the Mayak. However, most marine fuel remains stored in old temporary and effectively full surface or floating facilities around the Kola Peninsula. Damaged, experimental and liquid metal reactor fuel cannot be reprocessed. This creates special problems for handling, transportation and final disposal. It is against this background that the study reported was undertaken. It was part of the European Commission’s TACIS programme and was aimed at improving the safety of radioactive waste management in north-west Russia. Its prime objectives were to identify the factors restricting spent fuel transport from the region to Mayak and potentially suitable storage and reprocessing facilities. Options were to be developed and costed for restoring effective transportation. Their implementation was to lead to safe interim storage of a limited amount of spent fuel in the north-west of Russia. The north-west region is a large, remote area with a harsh terrain and climate. Fuel is stored in two main areas: the Kola Peninsula and the Arkhangelsk region, which are approximately 1,000 km apart. There is a limited transport infrastructure, but the marine facilities have sea access. Hence fuel movement is predominantly by sea to railheads and then rail to Mayak. Road transport is limited, but important for local linking. Routine transportation of spent fuel to Mayak has been restricted by several factors. These include technical, financial and organisational issues. However, the main ones are a lack of available transportation means in both capability and capacity, problems created by the poor state of some fuel, the inadequate safety of the current storage facilities and inadequate interim and buffer storage capacity. Three main types of shipment option were identified: A) regular shipments with storage at existing sites; B) shipments immediately upon arising; and C) regular shipments to Mayak with optimised construction of additional storage capacity in line with demand. Each option was judged on whether it could provide real improvements in radiological and nuclear safety and/or aid the rapid and cost effective defuelling of inadequate existing storage facilities. An optimisation study was performed considering different defuelling, shipping and rail movement rates, and interim and buffer storage capacities, utilisation and locations. The conclusion was that two options could provide similar good solutions. These were: i) Option A.2/C.2 — regular shipment with interim storage of spent fuel at three key node locations: Kola, Murmansk and Severodvinsk; ii) Option B — immediate shipment upon arising. The final choice depends on the capacity of the Mayak plant to receive and reprocess the fuel and the public acceptability of constructing large new, spent fuel stores in north-west Russia. Given the major uncertainties over Mayak’s capacity to store and reprocess submarine fuel, options A.2/C.2 may be optimum.
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Cevik, Gulen. "The Public Square: Memory and Meaning." In 2016 ACSA International Conference. ACSA Press, 2016. http://dx.doi.org/10.35483/acsa.intl.2016.20.
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The term public has a rather ambiguous and broad meaning so does public space. Considering “its full development as a product of modern capitalist society,”¹ public space is constructed alongside private space. Kost of points out the organizational and legal consequences of “explicitly defining and articulating an outdoor space for the common good” in that “the people assume a double responsibility: the upkeep of this space and its preservation as public property.”²As such, public spaces can serve as sites where public identity and meaning are negotiated in complex ways. Today, even in countries governed by western style democracy, the use and access to public spaces are often restricted and policed. Public spaces can be highly politicized when they become the setting for the glorification of leaders, social activism, political uprisings, conflict and violence. Since public spaces are one of many settings where citizens experience their city, what happens when public spaces are under attack? What if the memory and the meaning are transformed into fragmented and irrelevant pieces by business interests or the government? What happens to public life when public spaces are stripped off of their spaceness?
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McCracken, Steven, Jonathan Tatman, and Pete Riccardella. "Technical Basis for Code Case N-847: Excavate and Weld Repair (EWR) for SCC Mitigation." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63769.
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Stress corrosion cracking (SCC), though infrequent, is often detected in nuclear power reactor system piping and components. A number of approaches have been developed and successfully deployed for SCC repair and mitigation such as full structural weld overlay (FSWOL), optimized weld overlay (OWOL), and mechanical stress improvement process (MSIP). While these approaches are proven technologies and have served the industry well, a new strategy, excavate and weld repair (EWR), provides yet another option for repair or mitigation of SCC. The EWR approach excavates a portion of the outer part of the butt weld. The excavation is then filled with a weld metal with demonstrated SCC resistance. The EWR approach would require less welding compared to a weld overlay and may be the best option for large bore butt welds where restricted access may make FSWOL, OWOL, or MSIP impractical. For the situation where a flaw is detected and removal or reduction of the flaw to acceptable size is necessary for continued service, the approach would permit a local partial arc EWR where only a portion of the butt weld circumference is removed and repaired. While the partial arc EWR is not a full mitigation, it would provide the needed preparation time for a more permanent repair during a subsequent refueling or maintenance outage. ASME Code Case N-847 was developed to provide examination, design, installation, and preservice/inservice inspection requirements for the EWR repair and mitigation approach. This paper provides a background, description and the technical bases for the EWR case case.
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Davis, Geo, Ahmed Al Fuwaires, Panagiotis Kamintzis, Peter Lukacs, Alan Keenan, Don Pieris, and Theodosia Stratoudaki. "Surface Acoustic Wave Suppression for Near-Surface Defect Imaging Using Laser Induced Phased Arrays." In 2022 49th Annual Review of Progress in Quantitative Nondestructive Evaluation. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/qnde2022-98293.
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Abstract Laser induced phased arrays (LIPAs) offer fast and efficient remote ultrasonic imaging for processes operating in extreme environments and restricted access such as additive manufacturing and welding. In this work, LIPAs are synthesized in the non-destructive thermoelastic regime using an 8 ns pulsed 1064 nm generation laser and a 532 nm continuous wave detection laser. The acquired Full Matrix data is post-processed using the Total Focusing Method (TFM) to image near-surface side-drilled holes inside an Aluminium sample. The images generated, however, contain contribution from the surface acoustic wave (SAW). In laser ultrasonics, SAW is the strongest wave mode generated, and consequently, a region of the image generated is saturated by the SAW arrival (SAW cross-talk). The SAW cross-talk region extends into the sample starting at the scan surface and hence masks any features/defects within this region. This study explores and compares various signal processing techniques such as frequency-wavenumber filtering, phase coherence imaging and amplitude thresholding of ultrasonic signals in order to suppress/remove the SAW cross-talk from the ultrasonic data captured using LIPA for successful imaging of near-surface defects. The mode suppression is achieved by targeting the characteristics of the SAW: its velocity, amplitude and phase. The different methods of wave suppression are compared, and relative merits of each technique are discussed.
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Banks, Christopher James, Bohdan Bodnaruk, Vladislav Kalmutskyi, Yerlan Seilov, Murat Zhiyenkulov, and Olugbena Oni. "Palaeogeography and Palaeoenvironments – A Multifield Examination of the Devonian-Permian Evolution of the Dneipr-Donets Basin." In SPE Eastern Europe Subsurface Conference. SPE, 2021. http://dx.doi.org/10.2118/208500-ms.
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Abstract Context is everything. Not all thick sands pay out and not all thin sands are poorly productive. It is important to understand a basin's palaeogeographical drivers, the resultant palaeoenvironments and their constituent sedimentary architecture. Development of a depositional model can be predictive with respect to the magnitude of accessible pore space for potential development. We present a multi-field study of the Dneipr-Donets basin. Over 600 wells were studied with >4500 lithostratigraphical picks being made. Over 7500 sedimentological picks were made allowing mapping of facies bodies and charting shifts in facies types. A facies classification scheme was developed and applied. The Devonian-Permian sedimentary section records the creation, fill, and terminal closure of the Dneipr-Donets Basin: Syn-rift brittle extension (late Frasnian-Famennian): intracratonic rifting between the Ukrainian Shield and Voronezh Massif formed a NW-SE orientated trough, with associated basaltic extrusion. Basin architecture consists of rotated fault blocks forming graben mini-basins. Sedimentation is dominantly upper shoreface but sand packages are poorly correlatable due to the faulted palaeotopography. Early Post-rift thermal subsidence (Visean-Lower Bashkirian): the faulted palaeotopography was filled and thermal subsidence drove basin deepening. Cyclical successions of offshore, lower shoreface and upper shoreface dominate. Sands are typically thin (<10m) but can be widely correlated and have high pore space connectivity. Mid Post-rift: the Bashkirian (C22/C23 boundary), paralic systems prograde over the shoreface. Changes in vertical facies are abrupt due to a low gradient to basin floor. Deltaic and fluvial facies can produce thick amalgamated sands (>30m), but access limited pore space because they are laterally restricted bodies. Terminal post-rift (Mykytivskan): above the lower Permian, the convergence of the Kazahkstanian and Siberian continents began to restrict the Dnieper-Donets basin's access to open ocean. The basin approached full conditions and deposition was dominated by evaporite precipitation, with periodic oceanic recharge. Ultimately, this sediment records the formation of Pangea. The successions examined were used to construct a basinal relative sea level curve, which can be applied elsewhere in the basin. This can be used to help provide palaeogeographical context to a field, which in turn controls the sedimentary architecture.
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Doll, U., G. Stockhausen, J. Heinze, U. Meier, C. Hassa, and I. Bagchi. "Temperature Measurements at the Outlet of a Lean Burn Single Sector Combustor by Laser-Optical Methods." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-56370.
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High OPR engine cycles for reduced NOx emissions will generate new aggravated requirements and boundary conditions by implementing low emission combustion technologies into advanced engine architectures. Lean burn combustion systems will have a significant impact on the temperature and velocity traverse at the combustor exit. The highly swirling flow from the lean burn fuel injector interacts with the combustor wall cooling before exiting the combustor. As a large portion (up to 80%) of the total flow passes through the fuel injector, the combustor exit flow and temperature field is dominated by the fuel injector. With the transition to high pressure engines it is essential to fully understand and determine the high energetic interface between combustor and turbine to avoid excessive cooling with detrimental impacts to turbine and overall engine efficiency. In this context the knowledge of temperature distributions at the combustor exit is of special importance. A lean burn single sector combustor was designed and built at DLR, providing optical access to the exit section. The sector was operated with a staged lean burn injector from Rolls-Royce Deutschland. Spatially resolved temperatures were measured at different operating conditions using planar laser-induced fluorescence of OH (OH-PLIF) and Filtered Rayleigh Scattering (FRS), the latter being used in a combustor environment for the first time. Apart from a conventional signal detection arrangement, FRS was also applied with an endoscope for signal collection, to assess its feasibility for future application in a full annular combustor with restricted optical access. Both techniques are complementary in several respects, which justified their combined application and comparative assessment in this specific environment. OH-PLIF allows instantaneous measurements and therefore enables local temperature statistics, but is limited to relatively high temperatures. On the other hand FRS can also be applied at low temperatures, which makes it particularly attractive for measurements in cooling layers. However, due to the weak physical process of Rayleigh scattering, FRS requires long sampling times and therefore can only provide temporal averages. When applied in combination, the accuracy of both techniques could be improved by each method helping to overcome the other’s shortcomings. In an accompanying paper, additional experiments are described which characterize the flow field at the combustor exit; the combined data provide comprehensive information on combustor exit conditions.
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Schroll, M., U. Doll, G. Stockhausen, U. Meier, C. Willert, C. Hassa, and I. Bagchi. "Flow Field Characterization at the Outlet of a Lean Burn Single Sector Combustor by Laser-Optical Methods." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-56365.
Full textAbstract:
High OPR engine cycles for reduced NOx emissions will generate new aggravated requirements and boundary conditions by implementing low emission combustion technologies into advanced engine architectures. Lean burn combustion systems will have a significant impact on the temperature and velocity traverse at the combustor exit. Lean burn fuel injectors dominate the combustor exit conditions. This is due to the fact that they pass a majority of the total combustor flow, and to the lack of mixing jets like in a conventional combustor. With the transition to high pressure engines it is essential to fully understand and determine the high energetic interface between combustor and turbine to avoid excessive cooling, which has a detrimental impact on turbine and overall engine efficiency. Velocity distributions and their fluctuations at the combustor exit for lean burn are of special interest as they can influence the efficiency and capacity of the turbine. Within the EU project LEMCOTEC, a lean burn single sector combustor was designed and built at DLR, providing optical access to its rectangular exit section. The sector was operated with a fuel staged lean burn injector from Rolls-Royce Deutschland. Measurements were performed under various operating conditions, covering idle and cruise operation. Two techniques were used to perform velocity measurements at the combustor exit in the demanding environment of highly luminous flames under elevated pressures: Particle Image Velocimetry (PIV) and Filtered Rayleigh Scattering (FRS). The latter was used for the first time in an aero-engine combustor environment. In addition to a conventional signal detection arrangement, FRS was also applied with an endoscope for signal collection, to assess its practicality for a potential future application in a full annular combustor with restricted optical access. Both measurement techniques are complementary in several respects, which justified their respective application and comparative assessment. PIV is able to record instantaneous velocity distributions and is therefore capable to deliver higher velocity moments, in addition to temporal averages. Applied in two orthogonal traversable light sheet arrangements, it could be used to map all three velocity components across the entire combustor cross section, and obtain data on velocity variances, cross-correlations and turbulence intensities. FRS is limited to measurements of average velocities, as long sampling times are required due to the weak physical process of Rayleigh scattering. However, FRS has two advantages: It requires no particle seeding, because it is based on the measurement of a molecular Doppler shift, and it can provide temperature information simultaneously. This contribution complements a second paper (GT2016-56370) focusing on the measurement of temperature distributions at the same combustor exit section by laser-based optical methods.
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Gupta, Kushal, Salim Abdalla Al Ali, Jeughale Ramanujan, and Tetsuro Takanishi. "Improving 4-1/2" Liner Deploy Ability in 6" Horizontal Hole with Utilization of Improved Characteristics Brines and Friction Reduction Devices." In SPE/IADC Middle East Drilling Technology Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/202090-ms.
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Abstract A large operator of a brown field offshore in the middle east has decided to provide full lower Completion accessibility and ensure prevention of open hole collapse as it can lead to various gains throughout the life of the well. Among those benefits, it provides a consolidated well bore for various production logging & stimulation tools to be deployed effectively, as well as full accessibility, conformance control and enable to provide production allocations for each zones. However there are multiple challenges in deploying lower completion liner in drains involving multiple reservoirs and geo steered wells: Well Bore Geometry, dog legs/ tortuosity etc. & differential sticking possibilities and of course the open hole friction. Due to the size of the open hole, restricted casing design and utilization of limited OD pipes further add to the complications of deploying the Lower completion liner in such brown Field wells. This paper intend to review the multi-step methodology approach implemented in recent years by the company to effectively deploy 4-1/2" Liner in 6" Horizontal Open Hole section. Among the techniques used to assist successful deployment of lower completions are: Improving hole cleaning, ensure smooth well bore with the use of directional drilling BHA, reduction of the Open Hole friction by utilizing Lubricated brines, fit for purpose Centralizers, use of drill pipe swivel devices to increase weight available to push the liner & reduce buckling tendency. With the length of open hole laterals reaching up to 10,000 ft for 6" Lower drains, open hole drag, friction & cleanliness are major components that causes challenges in deploying the Liner till TD. The use of specially formulated brines with fixed percentage of lubricants proved to significant reduce friction compared to the drilling mud used for drilling the horizontal drain. The combination of low friction brine with proper centralization / standoff which resulted in reduced contact area with the formation has also shown good results in preventing differentials sticking while running the liner through multilayer reservoirs having significantly different reservoir pressures. Another major constrain to deploy the lower completion liner in this offshore field is the very nature of the wells being primarily workover. This involves generally Tie back liners run to shallow depths to restore the integrity of wells. This limits our ability in the selection of drill pipe that can be used as only smaller OD drill pipes and HWDP can be utilized in order to deploy the Liner to bottom. On many occasions this provides only limited weight to push the Liner down to TD and impact our ability to set the liner top packer. Drill pipe rotating swivel devices have been utilized to improve our weight availability & transferability to push the liner down and to set the liner top packers. In order to provide independent deactivation mechanism for the drill pipe swivel and to have complete success in our liner deployments, a dedicated ball activated sub was designed to deactivate the swivel acting as back up in case primary deactivation methods fails during liner setting. The combined use of all these techniques enabled the company to deploy 4.5" Liners in 6" Horizontal drains with high success in this offshore Brown Oil field of UAE. This resulted in better well construction and complete access to lower drains over the life of the wells.
Reports on the topic "Restricted access and full embargo"
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Torres, Marissa, Michael-Angelo Lam, and Matt Malej. Practical guidance for numerical modeling in FUNWAVE-TVD. Engineer Research and Development Center (U.S.), October 2022. http://dx.doi.org/10.21079/11681/45641.
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This technical note describes the physical and numerical considerations for developing an idealized numerical wave-structure interaction modeling study using the fully nonlinear, phase-resolving Boussinesq-type wave model, FUNWAVE-TVD (Shi et al. 2012). The focus of the study is on the range of validity of input wave characteristics and the appropriate numerical domain properties when inserting partially submerged, impermeable (i.e., fully reflective) coastal structures in the domain. These structures include typical designs for breakwaters, groins, jetties, dikes, and levees. In addition to presenting general numerical modeling best practices for FUNWAVE-TVD, the influence of nonlinear wave-wave interactions on regular wave propagation in the numerical domain is discussed. The scope of coastal structures considered in this document is restricted to a single partially submerged, impermeable breakwater, but the setup and the results can be extended to other similar structures without a loss of generality. The intended audience for these materials is novice to intermediate users of the FUNWAVE-TVD wave model, specifically those seeking to implement coastal structures in a numerical domain or to investigate basic wave-structure interaction responses in a surrogate model prior to considering a full-fledged 3-D Navier-Stokes Computational Fluid Dynamics (CFD) model. From this document, users will gain a fundamental understanding of practical modeling guidelines that will flatten the learning curve of the model and enhance the final product of a wave modeling study. Providing coastal planners and engineers with ease of model access and usability guidance will facilitate rapid screening of design alternatives for efficient and effective decision-making under environmental uncertainty.