scholarly journals Profit Driven Decision Assist System to Select Efficient IaaS Providers

2018 ◽  
Vol 8 (6) ◽  
pp. 4398
Author(s):  
Mohan Murthy MK ◽  
Sanjay HA ◽  
Supreeth BM
Keyword(s):  
Analytical Model ◽  
Virtual Machines ◽  
End Users ◽  
The Other ◽  
End User ◽  
Pricing Models ◽  
Decision Strategies ◽  
Different Types ◽  
The Cost ◽  
Pricing Schemes

IaaS providers provide infrastructure to the end users with various pricing schemes and models. They provide different types of virtual machines (small, medium, large, etc.). Since each IaaS provider uses their own pricing schemes and models, price varies from one provider to the other for the same requirements. To select a best IaaS provider, the end users need to consider various parameters such as SLA, pricing models/schemes, VM heterogeneity, etc. Since many parameters are involved, selecting an efficient IaaS provider is a challenging job for an end user. To address this issue, in this work we have designed, implemented and tested a decision-assist system which assists the end users to select efficient IaaS provider(s). Our decision-assist system consists of an analytical model to calculate the cost and decision strategies to assist the end user in selecting the efficient IaaS provider(s). The decision assist system considers various relevant parameters such as VM configuration, price, availability, etc. to decide the efficient IaaS provider(s). Rigorous experiments have been conducted by emulating various IaaS providers, and we have observed that our DAS successfully suggests the efficient IaaS provider/ providers by considering the input parameters given by the user.

Images of users and products shown during design processes increase users’ willingness to use the design outcome

2010 ◽  
Vol 24 (2) ◽  
pp. 179-189 ◽  
Author(s):  
Bo T. Christensen
Keyword(s):  
Cognitive Science ◽  
Design Process ◽  
End Users ◽  
The Other ◽  
Incremental Innovation ◽  
Design Solution ◽  
User Characteristics ◽  
End User ◽  
Final Design ◽  
Willingness To Use

AbstractTwo studies tested whether introducing images to designers during the design process lead to more useful design solutions as evaluated by the end users’ willingness to use the final design. It was hypothesized based on theories in cognitive science and design that there were at least two paths from images to usefulness. One path concerns analogically transferring within-domain properties to the design solution. The other path concerns mentally simulating end-user characteristics and preferences and inclusion of the user in the resulting design. Study 1 supported that random images led to increased outcome usefulness, and supported both hypothesized paths, by using within-domain products and end-user images as input. Study 2 showed that the image categories competed for attention, and that the within-domain product stimuli attracted the most attention and was considered the most inspirational to the designers. The practical use of the technique may lead to only marginally original products perhaps limiting its applicability to incremental innovation.

Association of Computing Machinery Special Interest Group in Computer Personnel Research. Annual Conference, April 1992, Cincinnati OH, USA

1993 ◽  
Vol 8 (2) ◽  
pp. 121-123
Author(s):  
Roger Harris
Keyword(s):  
Interest Group ◽  
Special Interest ◽  
End Users ◽  
Special Interest Group ◽  
The Other ◽  
Annual Conference ◽  
End User ◽  
Computing Machinery ◽  
The One

The conference highlighted the increasing complexity of the role of IS personnel. On the one hand, the demands of increased competitiveness are forcing technical experts to gain better understanding of the commercial requirements of the end users they serve, and on the other hand, the opportunities offered by the End-User Computing phenomenon are placing increasing demands on the technical capabilities of the end users themselves. The emerging picture is one of a highly dynamic IS profession, with expanding boundaries, fewer barriers between itself and other professions and offering greater opportunities for those entering it and increased challenges for those already in it.

Copy-on-Abundant-Write for Nimble File System Clones

2021 ◽  
Vol 17 (1) ◽  
pp. 1-27
Author(s):  
Yang Zhan ◽  
Alex Conway ◽  
Yizheng Jiao ◽  
Nirjhar Mukherjee ◽  
Ian Groombridge ◽  
...  
Keyword(s):  
Virtual Machines ◽  
File System ◽  
File Systems ◽  
The Other ◽  
Low Latency ◽  
Fine Grained ◽  
Spatial Locality ◽  
Real World Applications ◽  
The Cost ◽  
Implementation Data

Making logical copies, or clones, of files and directories is critical to many real-world applications and workflows, including backups, virtual machines, and containers. An ideal clone implementation meets the following performance goals: (1) creating the clone has low latency; (2) reads are fast in all versions (i.e., spatial locality is always maintained, even after modifications); (3) writes are fast in all versions; (4) the overall system is space efficient. Implementing a clone operation that realizes all four properties, which we call a nimble clone , is a long-standing open problem. This article describes nimble clones in B-ϵ-tree File System (BetrFS), an open-source, full-path-indexed, and write-optimized file system. The key observation behind our work is that standard copy-on-write heuristics can be too coarse to be space efficient, or too fine-grained to preserve locality. On the other hand, a write-optimized key-value store, such as a Bε-tree or an log-structured merge-tree (LSM)-tree, can decouple the logical application of updates from the granularity at which data is physically copied. In our write-optimized clone implementation, data sharing among clones is only broken when a clone has changed enough to warrant making a copy, a policy we call copy-on-abundant-write . We demonstrate that the algorithmic work needed to batch and amortize the cost of BetrFS clone operations does not erode the performance advantages of baseline BetrFS; BetrFS performance even improves in a few cases. BetrFS cloning is efficient; for example, when using the clone operation for container creation, BetrFS outperforms a simple recursive copy by up to two orders-of-magnitude and outperforms file systems that have specialized Linux Containers (LXC) backends by 3--4×.

scholarly journals Not everything looks like a nail: Learning to select appropriate decision strategies in multiple environments

2016 ◽  
Author(s):  
Hrvoje Stojic ◽  
Henrik Olsson ◽  
Maarten Speekenbrink
Keyword(s):  
Task Demands ◽  
The Other ◽  
Strategy Selection ◽  
Decision Strategy ◽  
Decision Strategies ◽  
Context Sensitive ◽  
Multiple Tasks ◽  
Selection Approach ◽  
Different Types ◽  
Out Of Sample

How do people choose which decision strategy to use? When facing singletasks, research shows that people can learn to select appropriatestrategies. However, what happens when, as is typical outside thepsychological laboratory, they face multiple tasks? Participants werepresented with two interleaved decision tasks, one from a nonlinearenvironment, the other from a linear environment. The environments wereinitially unknown and participants had to learn their properties. Throughcognitive modeling, we examined the types of strategies adopted in bothtasks. Based on out of sample predictions, most participants adopted acue-based strategy in the linear environment and an exemplar-based strategyin the nonlinear environment. A context-sensitive reinforcement learningmodel accounts for this process. Thus, people associated differentstrategies to different types of environments through a trial-and-errortype of process, and learned to flexibly switch between the strategies asneeded. This evidence further supports the strategy selection approach todecision making which assumes that people pick and apply strategiesavailable to them according to task demands.

Usability evaluation of a library website with different end user groups

2018 ◽  
Vol 52 (1) ◽  
pp. 75-90 ◽  
Author(s):  
Katja Kous ◽  
Maja Pušnik ◽  
Marjan Heričko ◽  
Gregor Polančič
Keyword(s):  
Usability Testing ◽  
Testing Procedure ◽  
End Users ◽  
End User ◽  
Specific Domain ◽  
Measurement Framework ◽  
Significant Difference ◽  
Different Types ◽  
User Groups ◽  
Different Levels

To ensure a certain degree of usability, a library website should be carefully designed, especially since end users constitute a multitude of people with different needs and demands. The focal objective of this research was to investigate how different types of end users (i.e. pupils, students, the working population, seniors and researchers) respond to a library website in terms of its effectiveness, efficiency and satisfaction, which together represent its usability. The answers were obtained by performing formal usability testing, including think-aloud protocol, log analysis and questionnaires. The results of the statistical analysis show that different groups of end users achieve different levels of effectiveness and efficiency, while there is no significant difference between groups in satisfaction level. The results also indicate that participants did not achieve the threshold for a usable website. Based on the identified weaknesses, researchers present recommendations for improving a website’s usefulness, especially for non-experienced users. This research has two main contributions: (1) the connection between the theoretical definition and practical use of ISO 9241-11 attributes and (2) a usability testing procedure with a measurement framework applicable for different types of users in a specific domain, which could be applied to other domains.

scholarly journals IMPLEMENTATION OF AIR FLIGHT TRAVEL COSTS TO DETERMINE TICKETS FARE: AN EMPIRICAL STUDY FOR AL BORAQ AIR

2021 ◽  
Vol 3 (1) ◽  
pp. 283-296
Author(s):  
Fairouz Abdel Rahim NAAS ◽  
◽  
Mohamed Kais Adel Al GNBRI ◽  
Keyword(s):  
Empirical Study ◽  
Average Cost ◽  
Weather Conditions ◽  
The Other ◽  
Travel Costs ◽  
Pricing Process ◽  
Different Types ◽  
The Subject ◽  
The Cost ◽  
Specific Line

The study aims to describe how to implement air flight travel costs to determine ticket fare on Al Boraq Air Company. The importance of this study arises from the necessity and novelty of the subject in Libya. By consideration, the increases contribute to the private sector in this industry. Moreover, it will be a contribution that helps the company to make the decisions related to ticket fare in the future. Apply the empirical study when analyzing the data collected from accounting records and questioning the pricing process. The main conclusions are the estimated costs used to determine the ticket fare because the journey does not start yet. Therefore, the contribution profit also estimates. The company uses the percent of the fullness as a basis for distributing the costs and determining the cost average per seat for different types of passengers. The ticket fare depends on the compound costs. Otherwise, the company does not price each implemented trip separately. It determines the price for a specific line trip according to the average cost concerning the same line trip. The ticket fare will be the same for all the implemented line trips during a particular time, without paying any attention to the other factors that affected the ticket fare as the timing of the trip, the timing of the booking, and the weather conditions.

E-Commerce Berbasis Marketplace Dalam Upaya Mempersingkat Distribusi Penjualan Hasil Pertanian

2017 ◽  
Vol 1 (2) ◽  
pp. 131-136 ◽  
Author(s):  
Deni Apriadi ◽  
Arie Yandi Saputra
Keyword(s):  
Agricultural Sector ◽  
Positive Influence ◽  
End Users ◽  
Marketing Channels ◽  
Agricultural Products ◽  
The Other ◽  
Media Campaign ◽  
Community Groups ◽  
Distribution Chain ◽  
Production Demand

The agricultural sector has an important role in supporting the Indonesian economy. But on the other hand, sometimes many community groups do not benefit due to problems that arise because the distribution chain of agricultural products are long enough, especially for farmers and consumers (end users). Of course the situation must be improved, so that the agricultural products of Indonesia can be enjoyed by consumers or farmers with proper. One of its efforts is by establishing an e-commerce based e-commerce system in agriculture. E-commerce based ecommerce system can be used as an alternative for farmers, used as a media campaign, communication and information and can cut the distribution chain of agricultural products marketing. The benefits felt by farmers and consumers directly and indirectly give a positive influence, especially from the broader marketing channels of agricultural products can increase production demand and spur the procurement of production among farmers and also the price offered to consumers will be cheaper so that sales in agricultural products can be more increased and profitable for farmers

AGRICULTURAL PERIODICALS OF RUSSIA IN THE EARLY XX CENTURY

2019 ◽  
Keyword(s):  
Statistical Data ◽  
Soil Science ◽  
Agriculture Soil ◽  
Agricultural Knowledge ◽  
Horse Breeding ◽  
Different Types ◽  
Fruit Growing ◽  
Advanced Knowledge ◽  
The Cost ◽  
The Upper Volga Region

The article deals with the distribution of agricultural periodicals on the territory of the Russian Em-pire in the early twentieth century. Before that there were practically no publications on the pages of sci-entific magazines. Great emphasis is placed on the analysis of agricultural magazines published before 1917 in the Upper Volga region, namely in Vladimir, Kostroma, Tver and Yaroslavl provinces. Thanks to existed in pre-revolutionary Russian periodicals on agricultural subjects advanced knowledge of agron-omy, agriculture, soil science, horticulture, fruit growing, vegetable growing, winemaking, viticulture, 135 tobacco growing, livestock, poultry, bee-keeping, veterinary medicine, forestry, and hunting, land man-agement, irrigation, horse breeding were promoted. On the basis of statistical data, office documentation and other published sources, the author draws conclusions about the degree of accessibility of agricul-tural periodicals for the population, including the peasantry. Availability of agricultural periodicals largely depended on its price, so the author studied the situation with the cost of the annual subscription fee of these publications. The article investigates the issues of periodicity of agricultural magazines and newspapers, the exact number of such publications, as well as their subject matter. Existence duration of different types of periodicals is analyzed, the main publishers of magazines and newspapers, places of their publication are revealed. A prominent place is given to the publishing activities of agricultural pub-lic organizations and zemstvo self-government bodies. It is concluded that natural process of agricultural knowledge distribution among the population of Russia through publications on the pages of periodicals was disrupted by revolutionary events of 1917.

scholarly journals Black Hole Algorithm for Sustainable Design of Counterfort Retaining Walls

2020 ◽  
Vol 12 (7) ◽  
pp. 2767 ◽  
Author(s):  
Víctor Yepes ◽  
José V. Martí ◽  
José García
Keyword(s):  
Black Hole ◽  
Sustainable Design ◽  
Retaining Walls ◽  
The Other ◽  
Trade Off ◽  
Construction Company ◽  
Geometric Variables ◽  
The Stability ◽  
The Cost ◽  
Black Hole Algorithm

The optimization of the cost and CO 2 emissions in earth-retaining walls is of relevance, since these structures are often used in civil engineering. The optimization of costs is essential for the competitiveness of the construction company, and the optimization of emissions is relevant in the environmental impact of construction. To address the optimization, black hole metaheuristics were used, along with a discretization mechanism based on min–max normalization. The stability of the algorithm was evaluated with respect to the solutions obtained; the steel and concrete values obtained in both optimizations were analyzed. Additionally, the geometric variables of the structure were compared. Finally, the results obtained were compared with another algorithm that solved the problem. The results show that there is a trade-off between the use of steel and concrete. The solutions that minimize CO 2 emissions prefer the use of concrete instead of those that optimize the cost. On the other hand, when comparing the geometric variables, it is seen that most remain similar in both optimizations except for the distance between buttresses. When comparing with another algorithm, the results show a good performance in optimization using the black hole algorithm.

scholarly journals Analysis of Operational Efficiencies and Costs for Extracting Thinned Woods in Small-Scale Forestry, Nasunogahara Area, Tochigi Prefecture, Japan

2020 ◽  
Vol 3 (1) ◽  
pp. 61
Author(s):  
Kazuhiro Aruga
Keyword(s):  
Transportation Costs ◽  
The Other ◽  
Small Scale ◽  
Light Truck ◽  
Operation Costs ◽  
Other Hand ◽  
Light Trucks ◽  
The Cost ◽  
Manual Extraction ◽  
Truck Transportation

In this study, two operational methodologies to extract thinned woods were investigated in the Nasunogahara area, Tochigi Prefecture, Japan. Methodology one included manual extraction and light truck transportation. Methodology two included mini-forwarder forwarding and four-ton truck transportation. Furthermore, a newly introduced chipper was investigated. As a result, costs of manual extractions within 10 m and 20 m were JPY942/m3 and JPY1040/m3, respectively. On the other hand, the forwarding cost of the mini-forwarder was JPY499/m3, which was significantly lower than the cost of manual extractions. Transportation costs with light trucks and four-ton trucks were JPY7224/m3 and JPY1298/m3, respectively, with 28 km transportation distances. Chipping operation costs were JPY1036/m3 and JPY1160/m3 with three and two persons, respectively. Finally, the total costs of methodologies one and two from extraction within 20 m to chipping were estimated as JPY9300/m3 and JPY2833/m3, respectively, with 28 km transportation distances and three-person chipping operations (EUR1 = JPY126, as of 12 August 2020).

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