Electronic archiving. Selection of digital storage media for long term preservation

2014 ◽  
Keyword(s):  
Storage Media ◽  
Digital Storage ◽  
Long Term Preservation ◽  
Selection Of

scholarly journals Freeze-Concentrated Phase and State Transition Temperatures of Mixtures of Low and High Molecular Weight Cryoprotectants

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Alma J. Flores-Ramírez ◽  
Pedro García-Coronado ◽  
Alicia Grajales-Lagunes ◽  
Raúl González García ◽  
Miguel Abud Archila ◽  
...  
Keyword(s):  
State Transition ◽  
Frozen Storage ◽  
Thermal Transition ◽  
Transition Temperatures ◽  
Calorimetric Measurements ◽  
Mathematical Expressions ◽  
Mass Fractions ◽  
Long Term Preservation ◽  
Selection Of

Although numerous studies have been conducted on the use of cryoprotectants to prevent the deterioration of food during freezing and frozen storage, scarce reports exist on the thermal transition properties of aqueous cryoprotectant solutions at frozen temperatures. The selection of a suitable cryoprotective medium for the long-term preservation of food requires knowledge of the effects of cryoprotectants and their concentration on the freeze-concentrated unfrozen phase and state transition temperatures known asTg′,Tm′, andTm. Calorimetric measurements were conducted to determine theTg′,Tm′, andTmvalues of thirty frozen aqueous solutions containing maltodextrin, polydextrose, and glucose, in which a distance-based experimental design was used for mixtures of four components to establish their corresponding mass fractions in the mixtures. Thermograms, measured during heating/rewarming from –70 to 20°C, were used to identify the glass transition and freezing temperatures. Mathematical expressions forTg′,Tm′, andTmas a function of the mass fractions of cryoprotectants and water and their interactions (p< 0.05) were developed to aid the formulation of cryoprotective media involving more than two cryoprotectants for adequate frozen conservation of high and intermediate moisture foodstuffs.

scholarly journals How can we improve our web collection? An evaluation of webarchiving at the KB National Library of the Netherlands (2007–2017)

2017 ◽  
Vol 27 (2) ◽  
pp. 94-107 ◽  
Author(s):  
Barbara Sierman ◽  
Kees Teszelszky
Keyword(s):  
The Netherlands ◽  
Selection Criteria ◽  
National Library ◽  
Open Archival Information System ◽  
Legal Restrictions ◽  
Long Term Preservation ◽  
Initial Selection ◽  
The Web ◽  
Selection Of

In 2007, the Koninklijke Bibliotheek, the Dutch National Library (KB-NL), started the project ‘webarchiving’ based on a selection of Dutch websites. The initial selection of 1000 websites has currently grown into over 12,000 selected websites, crawled at different intervals. Although due to legal restrictions the current use is limited to the KB-NL reading room, it is important that the KB-NL includes the requirements of the (future) users in its approach to creating a web collection. With respect to the long-term preservation of the collection, we also need to incorporate the requirements for long-term archiving in our approach, as described in the Open Archival Information System (OAIS) Model ISO 14721: 2012. This article describes the results of a research project on webarchiving and the web collection of archived sites in the KB-NL, investigating the following questions. What is webarchiving in the Netherlands? What are the selection criteria of KB-NL and how are these related to what can be found on the Dutch web by the contemporary user? What is the influence of the choice of tools we use to harvest the final archived website? Do we know enough of the value of the web collection and the potential usage of it by researchers and how can we improve this value? This article will describe the outcomes of the research, the conclusions and advice that can be drawn from it and it is hoped will inspire broader discussions about the essence of creating web collections for long-term preservation as part of cultural heritage.

scholarly journals Coconut Cryopreservation: Present Status and Future Prospects

CORD ◽  
2017 ◽  
Vol 33 (1) ◽  
pp. 21
Author(s):  
Iroshini Welewanni ◽  
Dharshani Bandupriya
Keyword(s):  
Plant Species ◽  
Medium Term ◽  
Future Directions ◽  
Factors Affecting ◽  
Cryopreservation Techniques ◽  
Long Term Preservation ◽  
Small Holder ◽  
Selection Of ◽  
Very Low Temperature

Coconut is one of the most important small holder crops worldwide. Conservation of coconut as seeds or field gene banks is not effective due to a range of limitations. Cryopreservation, which is the conservation of living propagules at very low temperature (-196ºC), is the only method available currently for the long-term conservation of germplasm for problem plant species such as recalcitrant and vegetatively propagated plant species. This review summarizes different cryopreservation techniques that have been published from 1984 until the present in relation to different coconut material; it includes a brief discussion about short and medium-term cryopreservation before describing long-term preservation. It discusses factors affecting the process and success of cryopreservation, such as selection of plant material, pre-culture of tissues, osmoprotection, dehydration, cryo-storage, thawing and post-culturing of tissues, and finally to plants. The review also describes histological and ultra-structural studies on and the use of molecular markers to assess genetic stability after cryopreservation. Limitations and future directions related to coconut cryopreservation are discussed. Additional experiments are identified that will need to be undertaken to improve our understanding of the different cryopreservation methods.

The Design of Digital Storage Oscilloscope Based on Virtual Instrument

2014 ◽  
Vol 687-691 ◽  
pp. 1109-1112
Author(s):  
Zhang Hui ◽  
Mei Shan Jin ◽  
Yan Nan Zhai ◽  
Ling Gao ◽  
Jun Li
Keyword(s):  
Virtual Instrument ◽  
Software Module ◽  
Storage Oscilloscope ◽  
Labview Software ◽  
Digital Storage ◽  
Digital Storage Oscilloscope ◽  
Data Acquisition Card ◽  
Long Term Preservation ◽  
Multiple Display

We use LabVIEW software and PCI-6024E data acquisition card to design the virtual digital storage oscilloscope. The oscilloscope makes full use of the capabilities of computer storage and connected with the external device.The measurement waveform can storage once, long-term preservation and multiple display,so that we can observe the signal of single change and slow change. Waveform have a variety of ways output. The hardware is open, we can increase the software module by modifying to increase the function of the instrument.

It's about Time: Research Challenges in Digital Archiving and Long-term Preservation, I

2004 ◽  
Vol 33 (1) ◽  
Keyword(s):  
Dark Side ◽  
Digital Information ◽  
Digital Cameras ◽  
Storage Devices ◽  
Silicon Chips ◽  
Performance Improvements ◽  
Digital Storage ◽  
Desktop Computers ◽  
Long Term Preservation

One of the marvels of the information technology revolution is the continuous improvement in computer memory and storage performance and their simultaneous drop in cost. Thanks to what has been called “silicon scaling” the process power of a 1980s vintage mainframe computer now fits on miniscule silicon chips that can be embedded in any number of capture devices from complex remote sensors to consumer digital cameras. Digital storage devices and media have benefited from similar performance improvements and cost declines. Large organizations routinely add terabytes of storage capacity, and more and more individuals can afford laptop and desktop computers with tens of gigabytes of storage. One might suspect that archiving and preserving digital information would become easier and cheaper as a consequence of these improvements. But from a long-term preservation perspective, there is a dark side to the rapid growth in digital information. The technologies, strategies, methodologies, and resources needed to manage digital information for the long term have not kept pace with innovations in the creation and capture of digital information.

Digital preservation: some underlying issues for long-term preservation

2018 ◽  
Vol 35 (2) ◽  
pp. 8-12 ◽  
Author(s):  
Sneha Tripathi
Keyword(s):  
Design Methodology ◽  
Digital Preservation ◽  
Digital Environment ◽  
Storage Quality ◽  
Content Type ◽  
Digital Storage ◽  
Digital Objects ◽  
Long Term Preservation ◽  
Risk Preparedness

Purpose The purpose of this study is to investigate the concept of digital preservation and traditional preservation per se and discusses various issues related to long-term preservation in a digital environment. Design/methodology/approach The study attempts to look into the various aspects of preservation in context of digital objects (borne or digitalized) especially. Bundling of an object (digital), digital storage, quality control and risk preparedness are some of the pointers studied to perceive an overall scenario for long-term preservation of an object. Findings Various methods have been suggested to deal with the issues related to long-term preservation of an object which can be used to frame an organization’s policy for long-term preservation. Originality/value The study emphasizes on collective measures incorporating traditional and digital means to ensure long-term preservation. It lists down various checklists to deal with various issues pertinent to long-term digital preservation.

Women's Participation in Politics: Ukrainian Case

2014 ◽  
Vol 2013 (3) ◽  
pp. 53-66
Author(s):  
Skovikov Alexey
Keyword(s):  
Political Culture ◽  
Separation Of Powers ◽  
Party Competition ◽  
Political Life ◽  
Ruling Class ◽  
Political Actors ◽  
Women's Participation ◽  
Democratic Transformation ◽  
Selection Of

AbstractThe international practices takes into account the question of women's participation in the political life of modern Ukraine. The selection of the state was due to the dynamic process of democratic transformation - the separation of powers, the formation of multi-party competition among political actors in the electoral process, the activity women in the various institutions of civil society. The position was claimed on the basis of empirical data range of academic institutions and reputable sociological centers, and also interviews with experts who said that the creation of real conditions for self-realization by women's interest in politics is only possible for long term. The process is controversial and caused by political culture, traditions and interests of the ruling class represented mainly by men.

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