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Physics ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 1-11
Author(s):  
Pablo Dopazo ◽  
Carola de Benito ◽  
Oscar Camps ◽  
Stavros G. Stavrinides ◽  
Rodrigo Picos

Memristive technology is a promising game-changer in computers and electronics. In this paper, a system exploring the optimal paths through a maze, utilizing a memristor-based setup, is developed and concreted on a FPGA (field-programmable gate array) device. As a memristor, a digital emulator has been used. According to the proposed approach, the memristor is used as a delay element, further configuring the test graph as a memristor network. A parallel algorithm is then applied, successfully reducing computing time and increasing the system’s efficiency. The proposed system is simple, easy to scale up and capable of implementing different graph configurations. The operation of the algorithm in the MATLAB (matrix laboratory) programming enviroment is checked beforehand and then exported to two different Intel FPGAs: a DE0-Nano board and an Arria 10 GX 220 FPGA. In both cases, reliable results are obtained quickly and conveniently, even for the case of a 300 × 300 nodes maze.


Author(s):  
Pablo Dopazo ◽  
Carol de Benito ◽  
Oscar Camps ◽  
Stavros G. Stavrinides ◽  
Rodrigo Picos

In this paper, a system of searching for optimal paths is developed and concreted on a FPGA. It is based on a memristive emulator, used as a delay element, by configuring the test graph as a memristor network. A parallel algorithm is applied to reduce computing time and increase efficiency. The operation of the algorithm in Matlab is checked beforehand and then exported to two different Intel FPGAs: a DE0-Nano board and an Arria 10 GX 220 FPGA. In both cases reliable results are obtained quickly and conveniently, even for the case of a 300x300 nodes maze.


2021 ◽  
Vol 2 (2) ◽  
pp. 280-287
Author(s):  
Fajar Dwi Fadillah ◽  
Donny Anhar ◽  
Ibnu Fatkhu Royana

The background of this research is the ability of learning outcomes in the psychomotor, cognitive and affective aspects of both the XI IPS 1 grade students who are still many who are below KM. The learning method that will be used by researchers in conducting research is the learning model using the STAD and TGT models. The results showed: (1) there was an effect of the learning model on learning outcomes in class XI IPS 1 (STAD) as evidenced by the results of the paired simple t test with a significant value of Sig. (2-tailed) 0.039> 0.05 and the average post-test graph value of learning outcomes. (2) there is an effect of the learning model on learning outcomes in class XI IPA 1 (TGT) as evidenced by the results of the paired simple t test with a significant value of Sig. (2-tailed) 0.039> 0.05 and the average post-test graph value of learning outcomes. The conclusions of this study indicate that the results of the study of the STAD or TGT learning model applied to class XI IPS 1 and class XI IPA 1.Even by simple paired simple t test class XI IPS 1 Significance level: ? = 5% = 0, 05 Testing Criteria: If Sig. (2-tailed)> ? then H0 is accepted. For Class XI IPA 1 TGT Significance Level: ? = 5% = 0.05 Testing Criteria: If Sig. (2-tailed)> ? then H0 is accepted.


Author(s):  
L.S. Kuleshova ◽  
◽  
I.G. Fattakhov ◽  
Sh.Kh. Sultanov ◽  
R.U. Rabaev ◽  
...  

The paper presents the possibilities of expanding production opportunities in the oil company PJSC Tatneft. For this purpose, the well No.xxx7g with an inclined pilot borehole was drilled at the Bavlinskoye oil field and oriented core samples were taken to study the lithological cross-section and the geological structure of the subsurface horizons. The horizontal wellbore itself is located in the dankovo-lebedyansky horizon, where multi-zone hydraulic fracturing was carried out through ports with packers there. The following methods will increase the share of recoverable oil reserves in the oldest oil-producing Volga region by starting the development of new productive horizons and increase the oil recovery factors for these reservoirs. The methods used in this work will reduce the unit costs of increasing oil production and achieve a cost-effective level of work on wells of this type. The work had its own peculiarities. One of the reasons for the difficulty in interpreting the hydraulic fracturing Minifrac (Meyer software package) was the rather long time of closing fractures in domanic deposits during the registration of pressure drop. In turn, during the minifrac analysis of the Nolte G Time Test graph showed that the fracture did not close, and therefore it is impossible to determine the closing pressure (the pressure gradient of the gap) with reliable accuracy. Note that when interpreting the flow test results, the best match of the experimental and calculated curves is achieved when using the model of a horizontal well operating a homogeneous reservoir. Also, the deterioration of the bottom-hole zone may be associated with a weak opening of the created fractures. Keywords: oil; well; hydraulic fracturing; unconventionals; fracture; core.


Author(s):  
Wijayanti Wijayanti ◽  
Warno Warno ◽  
Ari Kristin P

This study aims to determine how much influence the good governance has on the quality of financial statements and to find out how much SIMDA in moderating the effect of good governance on the quality of financial statements. Quality financial statements will narrow down actions to commit corruption or other fraud. Every year the financial statements will be audited by the Supreme Audit Board and the issuance of opinions on the financial statements that have been audited. The method used in this study is quantitative with primary data from questionnaires. The sample used is probability sampling. The results of the study obtained that good governance has a positive and significant effect on the quality of financial statements. This is evidenced from the significance of 0,000 <0, 05 and tcount> ttable (5.475> 1.679). Whereas SIMDA can "strengthen" the effect of good governance on the quality of financial statements. These results are proven from the interaction test graph which illustrates if SIMDA becomes a moderating variable the effect of good governance on the quality of financial statements.


2020 ◽  
Vol 79 (Suppl 1) ◽  
pp. 338.2-339
Author(s):  
D. Nikolopoulos ◽  
A. Polissidis ◽  
K. Karali ◽  
D. Boumpas

Background:The pathogenesis of neuropsychiatric lupus (NPSLE) remains ill-defined due to limited access to tissue and the diversity and complexity of clinical manifestations with most evidence deriving from animal studies in MLR/lpr lupus-prone mouse.Objectives:To phenotype and characterize the neuropsychiatric disease in New Zealand Black/White (NZΒ/W) F1 strain; a spontaneous lupus prone mouse which is characterized by systemic autoimmunity.Methods:Mice were tested in a comprehensive behavioral test battery to assess possible effects on general depressive-like disorders, anxiety, cognitive function and motor performance/coordination. The following tests were conducted in the same order for all subjects (All females, NZB/W strain n=13 and C57BL/6 n=14) at 3 and 6 months of age: Open field, Novel object recognition (NOR), Novel object location (NOL), Elevated plus maze (EPM), Rotarod, Tail suspension test (TST), Prepulse inhibition (PPI), and Sucrose preference test (SPT). For comparisons, statistical significance was indicated as a two-sided P<0.05.Results:NZB/W mice at 3 months and 6 months of age exhibit depressive-like disorder as assessed by SPT and TST (P <0.05 and <0.0001, respectively). Anxiety-like phenotype was evident in lupus-prone mice at both time points based on EPM test (Graph 1). Open-field test revealed decreased locomotor activity and rotarod (Graph 2) showed impaired motor coordination in 3 month-old and 6 month-old NZB/W mice (P<0.001 and <0.01, respectively). NZB/W mice exhibit cognitive dysfunction at 3 and 6 months of age based on NOR test (P<0.05). No differences in cognitive function was observed between the two groups (P=0.11). Prepulse inhibition test revealed decreased sensorimotor gating in 3 month-old NZB/W mice, a difference not reaching statistical significance (P=.078). It was not possible to interpret correctly the PPI at second time point (6 months of age) due to age-related hearing loss in B6 at 6 month-old. NZB/W become more anxious over the course of the disease as assessed by EPM (3 mo. versus 6 mo. P<0.001, paired t-test, Graph 1).Conclusion:The NZB/W lupus-prone strain exhibit depressive-like behavior, anxiety, cognitive impairment and motor disturbances both at early and late stages of the disease. This polygenic murine model may be more suitable for investigating the autoimmunity-mediated neuroinflammation in human SLE.Disclosure of Interests: :None declared


Algorithms ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 35 ◽  
Author(s):  
Abdel-Rahman Hedar ◽  
Shada N. Abdulaziz ◽  
Adel A. Sewisy ◽  
Gamal A. El-Sayed

An efficient routing using a virtual backbone (VB) network is one of the most significant improvements in the wireless sensor network (WSN). One promising method for selecting this subset of network nodes is by finding the minimum connected dominating set (MCDS), where the searching space for finding a route is restricted to nodes in this MCDS. Thus, finding MCDS in a WSN provides a flexible low-cost solution for the problem of event monitoring, particularly in places with limited or dangerous access to humans as is the case for most WSN deployments. In this paper, we proposed an adaptive scatter search (ASS-MCDS) algorithm that finds the near-optimal solution to this problem. The proposed method invokes a composite fitness function that aims to maximize the solution coverness and connectivity and minimize its cardinality. Moreover, the ASS-MCDS methods modified the scatter search framework through new local search and solution update procedures that maintain the search objectives. We tested the performance of our proposed algorithm using different benchmark-test-graph sets available in the literature. Experiments results show that our proposed algorithm gave good results in terms of solution quality.


2020 ◽  
Vol 5 (2) ◽  
pp. 127-142
Author(s):  
Indah Pujiastuti

Abstrak: Sebuah buku teks dapat dikatakan berkualitas apabila memenuhi kelayakan kegrafikan, kelayakan penyajian, kelayakan isi, dan kelayakan bahasa, termasuk di dalamya  adalah  tingkat keterbacaan wacananya (readability). Tingkat keterbacaan wacana akan berpengaruh pada pemahaman siswa terhadap isi (materi) yang disampaikan dalam sebuah buku. Tujuan penelitian ini adalah untuk melihat tingkat keterbacaan wacana dalam buku teks bahasa Indonesia yang digunakaan di kelas VII dan VIII SMPN 14 Satu Atap Tanjungpinang. Penelitian ini merupakan penelitian deskriptif kuantitatif. Uji keterbacaan wacana tersebut menggunakan uji grafik Fry dan Raygor. Hasilnya, ada empat belas (sebelas wacana kelas VII dan tiga wacana kelas VIII) wacana yang sesuai dengan tingkatan kelas dan dapat digunakan untuk pembelajaran; lima belas wacana perlu direvisi (delapan wacana kelas VII dan 7 wacana kelas VIII) agar sesuai dengan tingkatan kelas; dan delapan belas wacana perlu diganti (dua belas wacana kelas VII dan tujuh wacana kelas VIII) karena invalid atau tidak dapat digunakan untuk kelas manapun. Kata Kunci: keterbacaan, wacana buku teks, grafik Fry, grafik RaygorAbstract: A textbook can be said to be of good quality if it fulfills the feasibility of graphics, the feasibility of presentation, the feasibility of content, and the appropriateness of language, including the level of readability of the discourse (readability). The level of readability of discourse will affect students' understanding of the content (material) delivered in a book. The purpose of this study was to look at the level of readability of discourse in Indonesian textbooks used in grades VII and VIII of SMPN 14 Satu Atap Tanjungpinang. This research is a quantitative descriptive. The discourse readability test uses the Fry and Raygor test graph. As a result, there are fourteen (eleven class VII discourses and three VIII discourses) discourses that are suitable for the grade level and can be used for learning; fifteen discourse needs to be revised (eight class VII discourse, seven class VIII discourse) to fit the grade level; and eighteen discourse needs to be replaced (twelve class VII discourse, six class VIII discourse) because it is invalid or cannot be used for any class. Keywords: readability, textbook discourse, Fry graph, Raygor graph


Catchphrase search graph has attracted tons research interest, due to the fact the version diagram can speak pleasant for maximum prepared and dependent database and scan the slogan can launch good sized statistics to the customer with out simple data about the sample and language questions. Practically speaking, information photographs may be very huge, for instance, Web-scale diagram containing billions of vertices. The fine in elegance technique utilizing delivered collectively for the calculation of the slogan seek process diagram, after which they do now not deserve to chart a totally huge, because of confined computing power and further area at the server focused. To remedy this hassle, we look at the slogan test graph scale web page is introduced in splendid situation. We first offer calculation effortlessly believe the response request productive questions. In any case, the calculation of flood searching harmless make use of search techniques that obtain huge time and system overhead. To treatment this weak point, we're at that time advise pursuing calculation based totally marks. In precise, we construct that encodes vertex signatures short way an excellent manner from factor to some random catchphrase in the graph. Thus, we can locate solutions to questions by investigating the dearth of way, with the aim that point and correspondence low value. In addition, we changed the diagram facts in the organization after dividing irregular underlying with the goal that the method is primarily based at the sign greater interesting. Finally, the results of our trial show achievability of our proposed method in carrying out watchword top view diagram statistics Web scale.


2018 ◽  
Vol 49 ◽  
pp. 00124
Author(s):  
Piotr Warzecha ◽  
Bartłomiej Hilger ◽  
Sławomir Różycki

The main aim of the research presented in this paper is study of volume coagulation of bentonite suspension. Investigation of physical properties included measurement of particle size distribution, chemical and phase analysis of prepared suspension, as well as preparation of sedimentation test graph and determination of dependence between concentration of the suspension and turbidity of the suspension. Relationship between coagulant dose and concentration was also determined during this analysis. This research could help in determination of critical coagulation concentration duringanalysis of coagulation process. Also it could be used duringsimulations of distribution of suspension in high - performance sedimentation settling tanks for suspension of similar origin in water treatment process.


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