scholarly journals A Computational Fractional Signal Derivative Method

2018 ◽  
Vol 2018 ◽  
pp. 1-10
Author(s):  
Matías Salinas ◽  
Rodrigo Salas ◽  
Diego Mellado ◽  
Antonio Glaría ◽  
Carolina Saavedra

We propose an efficient computational method to obtain the fractional derivative of a digital signal. The proposal consists of a new interpretation of the Grünwald–Letnikov differintegral operator where we have introduced a finite Cauchy convolution with the Grünwald–Letnikov dynamic kernel. The method can be applied to any signal without knowing its analytical form. In the experiments, we have compared the proposed Grünwald–Letnikov computational fractional derivative method with the Riemman–Louville fractional derivative approach for two well-known functions. The simulations exhibit similar results for both methods; however, the Grünwald–Letnikov method outperforms the other approach in execution time. Finally, we show an application of how our proposal can be useful to find the fractional relationship between two well-known biomedical signals.

Metahumaniora ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 389
Author(s):  
Widyo Nugrahanto

AbstrakPenelitian ini berjudul BKR (Badan Kemanan Rakyat):Cikal Bakal Tentara Indonesia?!. Penelitian ini merupakan interpretasi baru tentang cikal bakal TNI, yang umumnya banyak merujuk pada PETA (Pembela Tanah Air). Metode penelitian yang digunakan adalah Metode Sejarah.Metode Sejarah memiliki empat tahapan yaitu Heuristik, Kritik, Interpretasi dan Historiografi.Sumber-sumber penelitian ini menggunakan koran-koran sezaman, majalah sezaman, dan buku. BKR dianggap sebagai cikal bakal TNI didasarkan beberapa sebab. Pertama, atas dasar legalitas formal, PETA telah dibubarkan sehingga BKR adalah satuan militer yang pertama kali dibentuk setelah Indonesia merdeka. BKR selanjutnya melahirkan pembentukan TKR (Tentara Keamanan Rakyat), TKR (Tentara Keselamatan Rakyat), TRI (Tentara Republik Indonesia) dan TNI (Tentara Nasional Indonesia). Kedua, jika PETA dianggap sebagai cikal bakal TNI, maka KNIL dan beberapa satuan keprajuritan diabaikan. Padahal, beberapa bekas perwira KNIL memiliki peran penting di tubuh BKR hingga TNI.Kata kunci: BKR, Tentara, TNIAbstractThe main subject this study is BKR – Indonesian civil defense corps – as origin of Indonesian Military. This study is new interpretation about the origin of TNI (Indonesian National Armed Forces) now. Many opinion refer to PETA as civil defense corps in Japanese occupation era. Study emlpoys a Historical Method, which consists of four stage: Heuristic, Critic, Interpretation, Historiography. The study utilize some sources such as newspaper, magazine, and book. Main finding of this study is PETA had dispersed as legality and formally and BKR was formed as the firts corps after Independence of Indonesia. Futhermore, BKR changed to TKR (Tentara Keamanan Rakyat), TKR (Tentara Keselamatan Rakyat), TRI (Tentara Republik Indonesia) until TNI (Tentara Nasional Indonesia). If PETA is considered as origins of Indonesian Military, then it ignore KNIL – a colonial armed forces – and the other defence corps. Even though the eks KNIL’s officer have important role in military managenment of BKR until TNI.Keywords: BKR, Military, TNI


Metahumaniora ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 389
Author(s):  
Widyo Nugrahanto

AbstrakPenelitian ini berjudul BKR (Badan Kemanan Rakyat):Cikal Bakal Tentara Indonesia?!. Penelitian ini merupakan interpretasi baru tentang cikal bakal TNI, yang umumnya banyak merujuk pada PETA (Pembela Tanah Air). Metode penelitian yang digunakan adalah Metode Sejarah.Metode Sejarah memiliki empat tahapan yaitu Heuristik, Kritik, Interpretasi dan Historiografi.Sumber-sumber penelitian ini menggunakan koran-koran sezaman, majalah sezaman, dan buku. BKR dianggap sebagai cikal bakal TNI didasarkan beberapa sebab. Pertama, atas dasar legalitas formal, PETA telah dibubarkan sehingga BKR adalah satuan militer yang pertama kali dibentuk setelah Indonesia merdeka. BKR selanjutnya melahirkan pembentukan TKR (Tentara Keamanan Rakyat), TKR (Tentara Keselamatan Rakyat), TRI (Tentara Republik Indonesia) dan TNI (Tentara Nasional Indonesia). Kedua, jika PETA dianggap sebagai cikal bakal TNI, maka KNIL dan beberapa satuan keprajuritan diabaikan. Padahal, beberapa bekas perwira KNIL memiliki peran penting di tubuh BKR hingga TNI.Kata kunci: BKR, Tentara, TNIAbstractThe main subject this study is BKR – Indonesian civil defense corps – as origin of Indonesian Military. This study is new interpretation about the origin of TNI (Indonesian National Armed Forces) now. Many opinion refer to PETA as civil defense corps in Japanese occupation era. Study emlpoys a Historical Method, which consists of four stage: Heuristic, Critic, Interpretation, Historiography. The study utilize some sources such as newspaper, magazine, and book. Main finding of this study is PETA had dispersed as legality and formally and BKR was formed as the firts corps after Independence of Indonesia. Futhermore, BKR changed to TKR (Tentara Keamanan Rakyat), TKR (Tentara Keselamatan Rakyat), TRI (Tentara Republik Indonesia) until TNI (Tentara Nasional Indonesia). If PETA is considered as origins of Indonesian Military, then it ignore KNIL – a colonial armed forces – and the other defence corps. Even though the eks KNIL’s officer have important role in military managenment of BKR until TNI.Keywords: BKR, Military, TNI


2020 ◽  
Vol 27 (3) ◽  
pp. 178-186 ◽  
Author(s):  
Ganesan Pugalenthi ◽  
Varadharaju Nithya ◽  
Kuo-Chen Chou ◽  
Govindaraju Archunan

Background: N-Glycosylation is one of the most important post-translational mechanisms in eukaryotes. N-glycosylation predominantly occurs in N-X-[S/T] sequon where X is any amino acid other than proline. However, not all N-X-[S/T] sequons in proteins are glycosylated. Therefore, accurate prediction of N-glycosylation sites is essential to understand Nglycosylation mechanism. Objective: In this article, our motivation is to develop a computational method to predict Nglycosylation sites in eukaryotic protein sequences. Methods: In this article, we report a random forest method, Nglyc, to predict N-glycosylation site from protein sequence, using 315 sequence features. The method was trained using a dataset of 600 N-glycosylation sites and 600 non-glycosylation sites and tested on the dataset containing 295 Nglycosylation sites and 253 non-glycosylation sites. Nglyc prediction was compared with NetNGlyc, EnsembleGly and GPP methods. Further, the performance of Nglyc was evaluated using human and mouse N-glycosylation sites. Results: Nglyc method achieved an overall training accuracy of 0.8033 with all 315 features. Performance comparison with NetNGlyc, EnsembleGly and GPP methods shows that Nglyc performs better than the other methods with high sensitivity and specificity rate. Conclusion: Our method achieved an overall accuracy of 0.8248 with 0.8305 sensitivity and 0.8182 specificity. Comparison study shows that our method performs better than the other methods. Applicability and success of our method was further evaluated using human and mouse N-glycosylation sites. Nglyc method is freely available at https://github.com/bioinformaticsML/ Ngly.


2020 ◽  
Vol 12 (3) ◽  
pp. 168-174
Author(s):  
Rashmi Sahu ◽  
Maitraiyee Konar ◽  
Sudip Kundu

Background: Sensing of biomedical signals is crucial for monitoring of various health conditions. These signals have a very low amplitude (in μV) and a small frequency range (<500 Hz). In the presence of various common-mode interferences, biomedical signals are difficult to detect. Instrumentation amplifiers (INAs) are usually preferred to detect these signals due to their high commonmode rejection ratio (CMRR). Gain accuracy and CMRR are two important parameters associated with any INA. This article, therefore, focuses on the improvement of the gain accuracy and CMRR of a low power INA topology. Objective: The objective of this article is to achieve high gain accuracy and CMRR of low power INA by having high gain operational amplifiers (Op-Amps), which are the building blocks of the INAs. Methods: For the implementation of the Op-Amps and the INAs, the Cadence Virtuoso tool was used. All the designs and implementation were realized in 0.18 μm CMOS technology. Results: Three different Op-Amp topologies namely single-stage differential Op-Amp, folded cascode Op-Amp, and multi-stage Op-Amp were implemented. Using these Op-Amp topologies separately, three Op-Amp-based INAs were realized and compared. The INA designed using the high gain multistage Op-Amp topology of low-frequency gain of 123.89 dB achieves a CMRR of 164.1 dB, with the INA’s gain accuracy as good as 99%, which is the best when compared to the other two INAs realized using the other two Op-Amp topologies implemented. Conclusion: Using very high gain Op-Amps as the building blocks of the INA improves the gain accuracy of the INA and enhances the CMRR of the INA. The three Op-Amp-based INA designed with the multi-stage Op-Amps shows state-of-the-art characteristics as its gain accuracy is 99% and CMRR is as high as 164.1 dB. The power consumed by this INA is 29.25 μW by operating on a power supply of ±0.9V. This makes this INA highly suitable for low power measurement applications.


Entropy ◽  
2021 ◽  
Vol 23 (2) ◽  
pp. 211
Author(s):  
Garland Culbreth ◽  
Mauro Bologna ◽  
Bruce J. West ◽  
Paolo Grigolini

We study two forms of anomalous diffusion, one equivalent to replacing the ordinary time derivative of the standard diffusion equation with the Caputo fractional derivative, and the other equivalent to replacing the time independent diffusion coefficient of the standard diffusion equation with a monotonic time dependence. We discuss the joint use of these prescriptions, with a phenomenological method and a theoretical projection method, leading to two apparently different diffusion equations. We prove that the two diffusion equations are equivalent and design a time series that corresponds to the anomalous diffusion equation proposed. We discuss these results in the framework of the growing interest in fractional derivatives and the emergence of cognition in nature. We conclude that the Caputo fractional derivative is a signature of the connection between cognition and self-organization, a form of cognition emergence different from the other source of anomalous diffusion, which is closely related to quantum coherence. We propose a criterion to detect the action of self-organization even in the presence of significant quantum coherence. We argue that statistical analysis of data using diffusion entropy should help the analysis of physiological processes hosting both forms of deviation from ordinary scaling.


2021 ◽  
Vol 14 (1) ◽  
pp. 57-69
Author(s):  
Sonja Šurbatović

Studying the touch as a sense developed by contact, and the necessity to redefine it, due to the global pandemic and social dissonance that occurred is the topic of this text. Questioning the approach to drawing under the influence of remoteness addresses the need to look closely, to get personal with the drawing, a manifestation of experience. Drawing of intimacy, evaluate concepts of encounter and isolation posing the question of whether we can experience the closeness of the other through the embodiment of the experience in the drawing. Re-examining tactile sensation observed through the obstacle of corporeal distance, a reflection of intimate experiences and spaces opens up for a new interpretation - of touch without the touch. Can this obstacle transform touch into gaze; and can an image in its making, construct a tactile sensation? Intertwining theoretical and practical approach, this text witness drawing and its visual consumption in space of violated closeness.


Traditio ◽  
2019 ◽  
Vol 74 ◽  
pp. 27-53
Author(s):  
BRIAN BRENNAN

Within the collected works of Venantius Fortunatus, the sixth-century Latin poet who wrote verse for kings, royal officials, bishops, and nuns in Frankish Gaul, there are found three acrostic poems. One, on the themes of captivity and release (5.6) is accompanied by a prose letter (5.6a) in which the poet discusses his methods in composing this work, which he intended for decorative display on a wall. The other two acrostics are written on the theme of the Holy Cross (2.4; 2.5). This paper, which offers a new interpretation of the figurative acrostics on the Holy Cross, begins first by examining the compositional strategies discussed by Fortunatus in 5.6a and his use there of the extended metaphor of weaving for the composition of acrostic poetry. The paper then moves to a wider discussion of weaving as a metaphor in Fortunatus's poetry before exploring how the poet played with metaphors and materiality, particularly in those instances when he was writing verse intended to be actually placed on material objects or sent with them. It finally goes on to argue, on the basis of indications within the acrostic poems on the Holy Cross themselves and much circumstantial evidence external to them, that these poems (2.4; 2.5) were written for public display in the chapel of the Holy Cross convent at Poitiers. It argues that these acrostics were most probably intended as textile designs for church vela or “hangings.”


Author(s):  
Giuseppe de Vergottini

Los principios constitucionales en materia económica se desprenden hoy, no solo de la Constitución italiana, sino también y sobre todo de los Tratados europeos. La adhesión de Italia, primero al Tratado CE y más tarde al Tratado UE, ha reclamado en un primer momento nuevas interpretaciones de la constitución económica coherentes con el planteamiento liberal de los Tratados, y ha propiciado a continuación la reforma constitucional de 2001 e incluso posteriormente la formulación de proposiciones legislativas que tutelan el mercado para llegar, en fin, a la expresa mención de la competencia en la Constitución. Pero también los Tratados europeos han sido modificados e interpretados para hacerlos coherentes con los principios constitucionales y, en particular, con los valores sociales.Nowadays economic constitutional principles are not only in the Italian Constitution but also, and specially, in European Treaties. Italian adhesion to the EEC Treaty and then to the UE Treaty has demanded: a new interpretation of economic constitutional rules, due to the liberal conception of European Treaties; then, the 2001 constitutional reform; afterwards, the elaboration of parliament acts in order to protect free markets; and, last, the amendment to include «free competition» in the constitutional text. On the other hand, European Treaties have been reformed and interpretated according to the constitutional order and particularly to the welfare State principle.


1963 ◽  
Vol 2 (2) ◽  
Author(s):  
Paul N. Dimotakis

SummaryThe γ-pre-irradiation effect on the recombination of recoil cobalt atoms in some neutron irradiated crystalline cobaltic complexes was examined. The introduction of defects into the lattice by pre-irradiation seems to increase the initial retention and promotes the annealing phenomenon, though on the other hand radiolytic phenomena may also appear. Plots of isothermal annealing curves appear to indicate the existence of two or more parallel consecutive recombination-decomposition reactions. A kinetic interpretation of such mixed phenomena is also given. Complex kinetic phenomena also appear to be quite general in annealing processes for systems already studied by other authors. These systems, if examined in this light, may lead to a new interpretation as to the way in which recombination occurs during annealing.


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