scholarly journals PERANCANGAN APLIKASI KOMPRESI FILE VIDEO MENGGUNAKAN ALGORITMA INTERPOLATIVE CODING

Author(s):  
Desvika Riyansyah

The size of the video files is relatively large, long duration and has a good top kulithen it requires a large storage space.  With a very large video file size, at the time of the move process could be the process of moving failed because the media storage space exceeds the limit and consume very much quota at the time of transfer. The solution to this problem is how the video file can be compressed to accelerate the process of transferring and saving the video files and saving the quota. In this research, the algorithm used is Interpolative Coding, using the different compression methods-the difference of each value, and the compression results will be profitable, because the delivery will be easier and saves your quota and saves storage space.Keywords: Video File compression, Interpolative Coding algorithm

Author(s):  
Hikka Sartika ◽  
Taronisokhi Zebua

Storage space required by an application is one of the problems on smartphones. This problem can result in a waste of storage space because not all smartphones have a very large storage capacity. One application that has a large file size is the RPUL application and this application is widely accessed by students and the general public. Large file size is what often causes this application can not run effectively on smartphones. One solution that can be used to solve this problem is to compress the application file, so that the size of the storage space needed in the smartphone is much smaller. This study describes how the application of the elias gamma code algorithm as one of the compression technique algorithms to compress the RPUL application database file. This is done so that the RPUL application can run effectively on a smartphone after it is installed. Based on trials conducted on 64 bit of text as samples in this research it was found that compression based on the elias gamma code algorithm is able to compress text from a database file with a ratio of compression is 2 bits, compression ratio is 50% with a redundancy is 50%. Keywords: Compression, RPUL, Smartphone, Elias Gamma Code


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Ján Krahulec ◽  
Martin Šafránek

Abstract Background The aim of this study was to provide an information about the homogeneity on the level of enterokinase productivity in P. pastoris depending on different suppliers of the media components. Results In previous studies, we performed the optimisation process for the production of enterokinase by improving the fermentation process. Enterokinase is the ideal enzyme for removing fusion partners from target recombinant proteins. In this study, we focused our optimization efforts on the sources of cultivation media components. YPD media components were chosen as variables for these experiments. Several suppliers for particular components were combined and the optimisation procedure was performed in 24-well plates. Peptone had the highest impact on enterokinase production, where the difference between the best and worst results was threefold. The least effect on the production level was recorded for yeast extract with a 1.5 fold difference. The worst combination of media components had a activity of only 0.15 U/ml and the best combination had the activity of 0.88 U/ml, i.e., a 5.87 fold difference. A substantially higher impact on the production level of enterokinase was observed during fermentation in two selected media combinations, where the difference was almost 21-fold. Conclusions Results demonstrated in the present study show that the media components from different suppliers have high impact on enterokinase productivity and also provide the hypothesis that the optimization process should be multidimensional and for achieving best results it is important to perform massive process also in terms of the particular media component supplier .


2012 ◽  
Vol 107 (11) ◽  
pp. 3062-3070 ◽  
Author(s):  
Fabian Schnier ◽  
Markus Lappe

Recent studies have shown that saccadic inward adaptation (i.e., the shortening of saccade amplitude) and saccadic outward adaptation (i.e., the lengthening of saccade amplitude) rely on partially different neuronal mechanisms. There is increasing evidence that these differences are based on differences at the target registration or planning stages since outward but not inward adaptation transfers to hand-pointing and perceptual localization of flashed targets. Furthermore, the transfer of reactive saccade adaptation to long-duration overlap and scanning saccades is stronger after saccadic outward adaptation than that after saccadic inward adaptation, suggesting that modulated target registration stages during outward adaptation are increasingly used in the execution of saccades when the saccade target is visually available for a longer time. The difference in target presentation duration between reactive and scanning saccades is also linked to a difference in perceptual localization of different targets. Flashed targets are mislocalized after inward adaptation of reactive and scanning saccades but targets that are presented for a longer time (stationary targets) are mislocalized stronger after scanning than after reactive saccades. This link between perceptual localization and adaptation specificity suggests that mislocalization of stationary bars should be higher after outward than that after inward adaptation of reactive saccades. In the present study we test this prediction. We show that the relative amount of mislocalization of stationary versus flashed bars is higher after outward than that after inward adaptation of reactive saccades. Furthermore, during fixation stationary and flashed bars were mislocalized after outward but not after inward adaptation. Thus, our results give further evidence for different adaptation mechanisms between inward and outward adaptation and harmonize some recent research.


Author(s):  
D. Jordan Bouchard ◽  
HengSheng Yang ◽  
Sanjeev Chandra

Abstract Steam generators used in industrial baking ovens operate by pouring or spraying water on a preheated thermal mass. This paper presents a methodology to quantify the amount of steam generated from a thermal mass along with experiments to determine the effect of particle size and porosity on steam generation. Three sizes of steel spheres, 0.6 mm, 8 mm, and 16 mm in diameter, were used to construct porous media beds that were preheated in an oven after which water was sprayed onto them from a full-cone nozzle for a fixed duration. The weight of the heated bed and the impinging water were recorded during spraying. The difference in weight change when spraying on heated and unheated beds gave the rate of evaporation. Thermocouples were used to record the internal temperature of the bed. Steam generation rate increased with particle size while bed porosity had only a minor influence. The counter-current flow of steam within the media bed disrupts the downward flow of water enough to leave pockets of hot material, reducing steam production. To maximize steam generation the media size, material, and spray time should be matched to ensure the surfaces of particles remain above the boiling point of water during spraying.


1998 ◽  
Vol 274 (3) ◽  
pp. E397-E402 ◽  
Author(s):  
Michael C. Hogan ◽  
Erica Ingham ◽  
S. Sadi Kurdak

It has been suggested that during a skeletal muscle contraction the metabolic energy cost at the onset may be greater than the energy cost related to holding steady-state force. The purpose of the present study was to investigate the effect of contraction duration on the metabolic energy cost and fatigue process in fully perfused contracting muscle in situ. Canine gastrocnemius muscle ( n = 6) was isolated, and two contractile periods (3 min of isometric, tetanic contractions with 45-min rest between) were conducted by each muscle in a balanced order design. The two contractile periods had stimulation patterns that resulted in a 1:3 contraction-to-rest ratio, with the difference in the two contractile periods being in the duration of each contraction: short duration 0.25-s stimulation/0.75-s rest vs. long duration 1-s stimulation/3-s rest. These stimulation patterns resulted in the same total time of stimulation, number of stimulation pulses, and total time in contraction for each 3-min period. Muscle O2 uptake, the fall in developed force (fatigue), the O2 cost of developed force, and the estimated total energy cost (ATP utilization) of developed force were significantly greater ( P < 0.05) with contractions of short duration. Lactate efflux from the working muscle and muscle lactate concentration were significantly greater with contractions of short duration, such that the calculated energy derived from glycolysis was three times greater in this condition. These results demonstrate that contraction duration can significantly affect both the aerobic and anaerobic metabolic energy cost and fatigue in contracting muscle. In addition, it is likely that the greater rate of fatigue with more rapid contractions was a result of elevated glycolytic production of lactic acid.


Author(s):  
Zixiu Liu

This pilot study uses quantitative content analysis following the framework of generic frames, diagnostic and prognostic frames (Godefroidt et al. 2016) to compare the news framing of the Ukraine crisis in Russia and the UK from 30 November 2013 to 26 February 2014. The Moscow Times and The Guardian were chosen as examples of quality print media with online editions that are comparable in terms of quality, circulation rate, political stance, and more importantly – global targeting. The study argues that firstly, the media in both countries were more likely to report through conflict lens, followed by responsibility frame. Secondly, the difference between the Eastern and Western media was tracked. While the Russian media relatively preferred economic consequence frame reflecting the country’s geopolitical interests, the British media tended to use human-interest frame highlighting unfairness and non-proportionality.


bionature ◽  
2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Erpi Nurdin ◽  
Gaby Maulida Nurdin

Abstract. In the growth of microorganisms such as fungi, it is necessary to grow a medium that can provide nutrients and as an energy source. Other alternative carbohydrate sources include potatoes, breadfruit, sago, and cassava, which is a distinctive and easy to find food companion. This type of research is descriptive with cross sectional design that aims to determine the difference in alternative media variation from various sources of carbohydrate to Candida albicans. The samples were then made to be the treatment for the creation of alternative media from various carbohydrate sources that further carried out the growth test against Candida albicans. The results of the study are the average growth of colonies on alternative media from Potato carbide sources, namely 655 colonies, breadfruit 1380 colonies, cassava 862 colonies, 372 sago colonies, and semi-synthetic media as a control of 874 colonies. This indicates there is growth of Candida albicans on all alternative media so that it can be used as an alternative medium of fungi growth, as well as the best growth of Candida albicans found in the media Breadfruit Dextrose Agar. Keywords: alternative media, carbohydrate sources, Candida albicans


2020 ◽  
Vol 4 (1) ◽  
pp. 91
Author(s):  
Ade Tria Lestari ◽  
Hapidin Hapidin ◽  
Zarina Akbar

Important aspects of social-emotional development developed in early childhood, specifically about prosocial habits. This study aims to develop a book about Palembang's local culture to improve understanding of prosocial behaviour in early childhood. Draw local culture through interesting pictures. The research method used is research and development with the ADDIE model. The technique of collecting data is based on the results of expert validation and trial data through pre-trial one group pretest-posttest design and statistical analysis of data using paired sample t-test. This study involved children aged 4 to 6 years in Musi Banyuasin Regency. The product research and development results show: first, the design of storybook media product is feasible to increase children's understanding of Palembang's cultural and prosocial behaviour; second, collecting media that is seen from the results obtained from the pretest-posttest data of children with a value and significance of 0.00 < 0.05, this shows the value of the pretest-posttest supports the difference; and third, the validity of the media that shows the book can be used for children who understand cultural literacy so that children are rich in cultural insights specifically the local culture of Palembang.


2020 ◽  
Vol 19 (1) ◽  
pp. 11-27
Author(s):  
Janet H. Murray

With the advent of mass consumer virtual reality (VR) headsets and controllers in the second decade of the 20th century, some experts have predicted we are on a path toward losing the distinction between the real and the virtual. These predictions overstate the empirical evidence for the effects of VR; ignore its technical limitations; take for granted highly speculative claims about the nature of consciousness; and, most fundamentally, lose sight of the continuities between VR and other representational media. This article argues against thinking of VR as a magical technology for creating seamless illusions. Instead it situates VR as an emerging medium within an evolving community that is beginning to develop the media conventions to support sustained interaction and immersion. The future of VR is not an inevitable and delusional metaverse but a medium of representation that will always require our active creation of belief.


2017 ◽  
Vol 7 (1) ◽  
pp. 18 ◽  
Author(s):  
Maha Alhaysony

This paper reports findings from a study that investigated language learning strategies (LLS) used by Saudi EFL students at Aljouf University. A total of 134 students (66 males, 68 females) completed a questionnaire adapted from Oxford’s (1990) Strategy Inventory for Language Learning (SILL). The aim of the study was to better understand the relationship between the use of LLS and gender and duration of English language study. The results showed that the average of strategy use was in the low to medium range. Cognitive, metacognitive and compensation strategies were used most frequently, while memory and affective strategies were reported to be least frequently used. The results also showed that female students used more LLS than male students, although the difference was not significant. No significant difference was found in relation to duration of studying English, although students with long duration reported using LLS most frequently. Pedagogical implications of these findings are discussed in relation to Saudi EFL context.


Sign in / Sign up

Export Citation Format

Share Document