scholarly journals TRENDS IN DATA WAREHOUSING TECHNIQUES

2021 ◽  
Author(s):  
Naveen Kunnathuvalappil Hariharan
Keyword(s):  
Relational Databases ◽  
Financial Data ◽  
Relational Model ◽  
Time Data ◽  
Short Period ◽  
The Subject ◽  
Processing And Storage ◽  
And Storage ◽  
Long Term Trend

Financial data volumes are increasing, and this appears to be a long-term trend, implying that data managementdevelopment will be crucial over the next few decades. Because financial data is sometimes real-time data, itis constantly generated, resulting in a massive amount of financial data produced in a short period of time.The volume, diversity, and velocity of Big Financial Data are highlighting the significant limitations oftraditional Data Warehouses (DWs). Their rigid relational model, high scalability costs, and sometimesinefficient performance pave the way for new methods and technologies. The majority of the technologiesused in background processing and storage research were previously the subject of research in their earlystages. The Apache Foundation and Google are the two most important initiatives. For dealing with largefinancial data, three techniques outperform relational databases and traditional ETL processing: NoSQL andNewSQL storage, and MapReduce processing.

CURRENT BEST PRACTICES AND BIOBANKING RECOMMENDATIONS

2019 ◽  
Vol 64 (12) ◽  
pp. 769-776 ◽  
Author(s):  
Y. V. Doludin ◽  
A. L. Borisova ◽  
M. S. Pokrovskaya ◽  
O. V. Stefanyuk ◽  
O. V. Sivakova ◽  
...  
Keyword(s):  
Best Practices ◽  
Preanalytical Phase ◽  
Wide Range ◽  
Research Problems ◽  
Processing And Storage ◽  
And Storage ◽  
Quality Of Research ◽  
Selection Of

The biobank is a structure established with the goal of long-term responsible storage of biological samples and the associated data for their further use in scientific and clinical research. The objectives of biobanking are the creation of unified recommendations on: the planning of premises and the selection of equipment for storage; development of management methods and staff training; standardization of methods for the collection, shipping, processing and storage of biomaterial of various origins, as well as methods for quality control and validation of the applied methods; creation and use of databases of information accompanying biospecimens. The lack of common standards for conducting the preanalytical phase has been the cause of low accuracy and poor reproducibility of research results. To date, a large number of guidelines and best practices have been published that provide an answer to a wide range of problems in organizing the biobanking process. The article provides an overview of the most famous biobanking guidelines that can be used to solve various research problems. Biobanking in Russia is actively developing. Since 1996 there is a work on the legislative regulation of biobanking activities, as a result of which a number of regulatory documents have been issued. An important stage in the development of biobanking in Russia was the establishment of the “National Association of Biobanks and Biobanking Specialists” (NASBio) in 2018, which included representatives of medical and research institutions, commercial firms, and qualified specialists in the field of biobanking. One of the key tasks of NASBio is the adaptation and implementation of the best biobanking practices in Russian research institutes and centers. The use of modern guidelines and best practices on biobanking will lead to an increase in the quality of research and publications.

scholarly journals Features of formation of durability of corn hybrids seeds for their cultivation, postharvest processing and storage

Agrology ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 137-142
Author(s):  
M. Ya. Kyrpa ◽  
N. S. Filipkova
Keyword(s):  
Seed Production ◽  
Necessary Condition ◽  
Prolonged Storage ◽  
Hydrothermal Conditions ◽  
Corn Hybrids ◽  
Long Term Storage ◽  
Processing And Storage ◽  
And Storage ◽  
Term Storage

The organization of the sowing material stocks is a necessary condition for stable seed production of any crop. Insurance, reserve, breeding and transi-tional funds are such stocks in corn seed production. Their creation and maintenance largely depend on the economic longev-ity of seeds, which can be formed at the stages of cultivation, harvesting, post-harvest processing and storage of seed. However, the data on the peculiarities of the formation of seed longevity of corn hybrids and their ability to long-term storage are lim-ited. That is why research in this area is considered relevant and important. The results of study of regularities of formation and factors of longevity of corn hybrids seeds of domestic selection are summarized in the executed work. Ecological, technical-technological and varietal factors are formed dur-ing corn cultivation, har-vesting and processing. The greatest dependence is noted on the hydrothermal conditions, start-ing from the stage of cultivation, and then – in the stages after harvesting - the modes of drying and separation of seed. High economic durability is provided under the following conditions: hydro-term coefficient at the level of 0,5–0,7 – for vegetation and 0,3–0,4 – for maturing, dry-ing temperature within 36–400С at humidity of seeds of 20–30%, fractional separation, removal from the seeds mass of the unstable frac-tion containing 18–20% of the total. Some of the factors included a sign of seed size, which is clearly manifested at the stage of long-term storage of seed. Sowing fractions differ significantly in terms of size, including the weight of 1000 seeds and their linear size. The greatest economic durability is inherent in the first and second of all factions. It is recommended to obtain them by calibrating the seeds on separating sieves with round holes with a diameter of 8–10 mm, depending on the hybrids. Prolonged storage is proposed on the basis of a combination of two factors – low humidity and airtight packaging of seeds. This significantly reduces resource costs and extends the economic longevity of corn hybrid seeds to 4–5 years.

scholarly journals RESEARCH OF ACID TRANSACTION IMPLEMENTATION METHODS FOR DISTRIBUTED DATABASES USING REPLICATION TECHNOLOGY

2021 ◽  
pp. 19-31
Author(s):  
Oksana Mazurova ◽  
Artem Naboka ◽  
Mariya Shirokopetleva
Keyword(s):  
Relational Databases ◽  
System Analysis ◽  
Distributed Databases ◽  
Subject Area ◽  
Relational Model ◽  
Distributed Transactions ◽  
Business Operations ◽  
The Subject ◽  
Effective Use ◽  
Selection Of

Today, databases are an integral part of most modern applications designed to store large amounts of data and to request from many users. To solve business problems in such conditions, databases are scaled, often horizontally on several physical servers using replication technology. At the same time, many business operations require the implementation of transactional compliance with ACID properties. For relational databases that traditionally support ACID transactions, horizontal scaling is not always effective due to the limitations of the relational model itself. Therefore, there is an applied problem of efficient implementation of ACID transactions for horizontally distributed databases. The subject matter of the study is the methods of implementing ACID transactions in distributed databases, created by replication technology. The goal of the work is to increase the efficiency of ACID transaction implementation for horizontally distributed databases. The work is devoted to solving the following tasks: analysis and selection of the most relevant methods of implementation of distributed ACID transactions; planning and experimental research of methods for implementing ACID transactions by using of NoSQL DBMS MongoDB and NewSQL DBMS VoltDB as an example; measurements of metrics of productivity of use of these methods and formation of the recommendation concerning their effective use. The following methods are used: system analysis; relational databases design; methods for evaluating database performance. The following results were obtained: experimental measurements of the execution time of typical distributed transactions for the subject area of e-commerce, as well as measurements of the number of resources required for their execution; revealed trends in the performance of such transactions, formed recommendations for the methods studied. The obtained results allowed to make functions of dependence of the considered metrics on loading parameters. Conclusions: the strengths and weaknesses of the implementation of distributed ACID transactions using MongoDB and VoltDB were identified. Practical recommendations for the effective use of these systems for different types of applications, taking into account the resources consumed and the types of requests.

scholarly journals Working memory as a mental workspace: Why activated long-term memory is not enough

2003 ◽  
Vol 26 (6) ◽  
pp. 745-746 ◽  
Author(s):  
Robert H. Logie ◽  
Sergio Della Sala
Keyword(s):  
Working Memory ◽  
Event Related Potential ◽  
Long Term Memory ◽  
Memory Retention ◽  
Term Memory ◽  
On Line ◽  
Processing And Storage ◽  
And Storage

Working-memory retention as activated long-term memory fails to capture orchestrated processing and storage, the hallmark of the concept of working memory. The event-related potential (ERP) data are compatible with working memory as a mental workspace that holds and manipulates information on line, which is distinct from long-term memory, and deals with the products of activated traces from stored knowledge.

Response of Longleaf Pine Seeds to Storage Conditions and Pregermination Treatments

1993 ◽  
Vol 17 (4) ◽  
pp. 174-179 ◽  
Author(s):  
James P. Barnett ◽  
John P. Jones
Keyword(s):  
Seed Quality ◽  
Longleaf Pine ◽  
Pinus Palustris ◽  
Storage Conditions ◽  
Operational Conditions ◽  
Long Term Storage ◽  
Processing And Storage ◽  
And Storage ◽  
Term Storage

Abstract Although longleaf pine (Pinus palustris Mill.) seeds are considered the most susceptible of the southern pines to damage during collection, processing, and storage, results of these studies show that high seed quality can be assured for periods up to 20 yr through proper handling and storing techniques. Recommendations for long-term storage include drying seeds to moisture contents of 10% or less and storing at subfreezing temperatures, preferably near 0°F. Reevaluation of stratification treatments applied under operational conditions indicates that the soaking in water that is necessary for seed imbibition reduces total germination in an amount proportional to the length of the soak. Stratification is not recommended except under very controlled conditions. South. J. Appl. For. 17(4):174-179.

Combined Hormonal and Cytotoxic Treatment of Advanced Breast Cancer.

1966 ◽  
Vol 52 (1) ◽  
pp. 17-28 ◽  
Author(s):  
Sergio Di Pietro ◽  
Bruno Salvadori
Keyword(s):  
Breast Cancer ◽  
Advanced Breast Cancer ◽  
World Literature ◽  
Combined Therapy ◽  
Advanced Breast ◽  
Cytotoxic Treatment ◽  
Short Period ◽  
The Subject ◽  
Cytotoxic Substance

The authors refer on a clinical trial conducted on a group of 32 women with advanced breast cancer, in order to evaluate the effects of the combined hormonal and cytotoxic treatment of the disease. An androgen compound (2 α-methyl-dihydrotestosterone or n-ottil-enolic ether of dihydrotestosterone) and a cytotoxic substance (Cyclophosphamide) were administrated i. m.; the dose of Cyclophosphamide was 100 mg a day, whereas the dose of the hormonal compound was 100 mg 3 times a week. The treatment was continued over a period of time ranging from 2 to 23 months; the administration of Cyclophosphamide was discontinued for a short period only in case of marked leukopenia: in the course of the therapy the expected side-effects were noted, but they were never of great importance. An objective improvement was obtained in 18 patients; the mean duration of this improvement was of 8,5 months. In 8 women the neoplastic lesions remained unchanged, while in 6 patients a progression of the disease was noted. After a review of the most important records of the world literature on the subject, the authors come to the conclusion that this form of combined therapy may be of some use, particularly in those patients who are not responsive to endocrine ablation. Moreover, the possibility of long term treatments is emphasized, for the lack of any notable, unwanted side-effect.

scholarly journals Dendritic sodium spikes are required for long-term potentiation at distal synapses on hippocampal pyramidal neurons

eLife ◽  
2015 ◽  
Vol 4 ◽  
Author(s):  
Yujin Kim ◽  
Ching-Lung Hsu ◽  
Mark S Cembrowski ◽  
Brett D Mensh ◽  
Nelson Spruston
Keyword(s):  
Pyramidal Neurons ◽  
Long Term Potentiation ◽  
Long Term Effects ◽  
Hippocampal Pyramidal Neurons ◽  
Term Potentiation ◽  
Nav Channels ◽  
Processing And Storage ◽  
And Storage ◽  
Apical Dendrites

Dendritic integration of synaptic inputs mediates rapid neural computation as well as longer-lasting plasticity. Several channel types can mediate dendritically initiated spikes (dSpikes), which may impact information processing and storage across multiple timescales; however, the roles of different channels in the rapid vs long-term effects of dSpikes are unknown. We show here that dSpikes mediated by Nav channels (blocked by a low concentration of TTX) are required for long-term potentiation (LTP) in the distal apical dendrites of hippocampal pyramidal neurons. Furthermore, imaging, simulations, and buffering experiments all support a model whereby fast Nav channel-mediated dSpikes (Na-dSpikes) contribute to LTP induction by promoting large, transient, localized increases in intracellular calcium concentration near the calcium-conducting pores of NMDAR and L-type Cav channels. Thus, in addition to contributing to rapid neural processing, Na-dSpikes are likely to contribute to memory formation via their role in long-lasting synaptic plasticity.

scholarly journals Preservation of Data Warehouses

2013 ◽  
pp. 136-159
Author(s):  
Carlos Aldeias ◽  
Gabriel David ◽  
Cristina Ribeiro
Keyword(s):  
Data Warehouse ◽  
Relational Databases ◽  
Relational Model ◽  
Markup Language ◽  
Data Warehouses ◽  
Dimensional Model ◽  
Extensible Markup ◽  
Definition Of ◽  
Long Term Preservation

Data warehouses are used in many application domains, and there is no established method for their preservation. A data warehouse can be implemented in multidimensional structures or in relational databases that represent the dimensional model concepts in the relational model. The focus of this work is on describing the dimensional model of a data warehouse and migrating it to an XML model, in order to achieve a long-term preservation format. This chapter presents the definition of the XML structure that extends the SIARD format used for the description and archive of relational databases, enriching it with a layer of metadata for the data warehouse components. Data Warehouse Extensible Markup Language (DWXML) is the XML language proposed to describe the data warehouse. An application that combines the SIARD format and the DWXML metadata layer supports the XML language and helps to acquire the relevant metadata for the warehouse and to build the archival format.

scholarly journals Starspot activity and differential rotation in KIC 11560447

2018 ◽  
Vol 13 (S340) ◽  
pp. 235-236
Author(s):  
Emre Işık ◽  
İbrahim Özavcı ◽  
Hakan V. Şenavcı ◽  
Gaitee A. J. Hussain ◽  
Douglas O’Neal ◽  
...  
Keyword(s):  
Numerical Simulations ◽  
Lower Limit ◽  
High Precision ◽  
Differential Rotation ◽  
Late Type ◽  
Term Trend ◽  
Short Period ◽  
Spot Activity ◽  
Long Term Trend

AbstractUsing high-precision photometry from the Kepler mission, we investigate patterns of spot activity on the K1-type subgiant component of KIC 11560447, a short-period late-type eclipsing binary. We tested the validity of maximum entropy reconstructions of starspots by numerical simulations. Our procedure successfully captures up to three large spot clusters migrating in longitude. We suggest a way to measure a lower limit for stellar differential rotation, using slopes of spot patterns in the reconstructed time-longitude diagram. We find solar-like differential rotation and recurrent spot activity with a long-term trend towards a dominant axisymmetric spot distribution during the period of observations.

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