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Artículos de revistas sobre el tema "Partial CSIT"

Autor: Grafiati

Publicado: 25 de mayo de 2024

Última modificación: 19 de julio de 2025

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1

Kramer, Gerhard. "Information Rates for Channels with Fading, Side Information and Adaptive Codewords." Entropy 25, no. 5 (2023): 728. http://dx.doi.org/10.3390/e25050728.

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Generalized mutual information (GMI) is used to compute achievable rates for fading channels with various types of channel state information at the transmitter (CSIT) and receiver (CSIR). The GMI is based on variations of auxiliary channel models with additive white Gaussian noise (AWGN) and circularly-symmetric complex Gaussian inputs. One variation uses reverse channel models with minimum mean square error (MMSE) estimates that give the largest rates but are challenging to optimize. A second variation uses forward channel models with linear MMSE estimates that are easier to optimize. Both model classes are applied to channels where the receiver is unaware of the CSIT and for which adaptive codewords achieve capacity. The forward model inputs are chosen as linear functions of the adaptive codeword’s entries to simplify the analysis. For scalar channels, the maximum GMI is then achieved by a conventional codebook, where the amplitude and phase of each channel symbol are modified based on the CSIT. The GMI increases by partitioning the channel output alphabet and using a different auxiliary model for each partition subset. The partitioning also helps to determine the capacity scaling at high and low signal-to-noise ratios. A class of power control policies is described for partial CSIR, including a MMSE policy for full CSIT. Several examples of fading channels with AWGN illustrate the theory, focusing on on-off fading and Rayleigh fading. The capacity results generalize to block fading channels with in-block feedback, including capacity expressions in terms of mutual and directed information.

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2

Kim, T. T., and M. Skoglund. "Diversity–Multiplexing Tradeoff in MIMO Channels With Partial CSIT." IEEE Transactions on Information Theory 53, no. 8 (2007): 2743–59. http://dx.doi.org/10.1109/tit.2007.901171.

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3

Mosquera, Carlos, Nele Noels, Tomás Ramírez, Màrius Caus, and Adriano Pastore. "Space-Time Rate Splitting for the MISO BC with Magnitude CSIT." IEEE Transactions on Communications, 69, no. 7 (2021): 4417–32. https://doi.org/10.1109/TCOMM.2021.3074519.

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A novel coding strategy is proposed for a broadcast setting with two transmitter (TX) antennas and two single-antenna receivers (RX). The strategy consists of using space-time block coding to send a common message (to be decoded by both RXs) across the two TX antennas, while each TX antenna also sends a private message to one of the RXs. The relative weight of the private and common messages from each TX antenna is tuned to maximize the instantaneous achievable sum-rate of the channel. Closed-form expressions for the optimal weight factors are derived. In terms of the generalized degrees of freedom (GDoF) metric, the new scheme is able to achieve the sum-GDoF with finite precision channel state information at the transmitter (CSIT) of the two user broadcast channel. Moreover, as opposed to the existing rate-splitting schemes, the proposed scheme yields instantaneous achievable rates that are independent of the channel phases. This property is instrumental for link adaptation when only magnitude CSIT is available. Our numerical results indeed demonstrate the superiority of the scheme for the 2-user setting in case of magnitude CSIT. Extension to a more general K -user scenario is briefly discussed.

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4

Dutta, Biswajit. "Full-Diversity Achieving Precoding for Asymmetric MIMO Using Partial CSIT." IEEE Transactions on Communications 61, no. 3 (2013): 1051–58. http://dx.doi.org/10.1109/tcomm.2013.012313.120353.

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5

Du, Weimin, Zujun Liu, and Fan Li. "Interference Neutralization With Partial CSIT for Full-Duplex Cellular Networks." IEEE Access 7 (2019): 49177–90. http://dx.doi.org/10.1109/access.2019.2910601.

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6

Wang, Yanmin, Wei Feng, Limin Xiao, Yifei Zhao, and Shidong Zhou. "Coordinated Multi-Cell Transmission for Distributed Antenna Systems with Partial CSIT." IEEE Communications Letters 16, no. 7 (2012): 1044–47. http://dx.doi.org/10.1109/lcomm.2012.050912.120383.

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7

Yong Peng, K. Josiam, and D. Rajan. "Diversity Multiplexing Tradeoff in MIMO Frequency Selective Channels with Partial CSIT." IEEE Communications Letters 12, no. 6 (2008): 408–10. http://dx.doi.org/10.1109/lcomm.2008.080228.

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8

Li, Qian, Kwok H. Li, and Kah C. Teh. "Diversity-Multiplexing Tradeoff of Symmetric MIMO Interference Channels with Partial CSIT." IEEE Transactions on Wireless Communications 10, no. 7 (2011): 2325–33. http://dx.doi.org/10.1109/twc.2011.041311.101629.

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9

Maleki, Mehdi, and Hamid Reza Bahrami. "Adaptive Space Modulation With Partial CSIT in Spatially Correlated Fading Channels." IEEE Transactions on Vehicular Technology 63, no. 7 (2014): 3184–95. http://dx.doi.org/10.1109/tvt.2014.2300102.

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10

Mai, Vien V., Juyeop Kim, Sang-Woon Jeon, Sang Won Choi, Beomjoo Seo, and Won-Yong Shin. "Degrees of Freedom of Millimeter Wave Full-Duplex Systems With Partial CSIT." IEEE Communications Letters 20, no. 5 (2016): 1042–45. http://dx.doi.org/10.1109/lcomm.2016.2536606.

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11

Piovano, Enrico, and Bruno Clerckx. "Optimal DoF Region of the $K$ -User MISO BC With Partial CSIT." IEEE Communications Letters 21, no. 11 (2017): 2368–71. http://dx.doi.org/10.1109/lcomm.2017.2724553.

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12

Su, Yinjie, Chen He, and Lingge Jiang. "Dynamic Decode-and-Forward Relaying with Partial CSIT and Optimal Time Allocation." Chinese Journal of Electronics 24, no. 1 (2015): 193–98. http://dx.doi.org/10.1049/cje.2015.01.032.

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13

JIN, Sai, Deyou ZHANG, and Li PING. "A Two-Way Relay Scheme for Multi-User MIMO Systems with Partial CSIT." IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E99.A, no. 2 (2016): 678–81. http://dx.doi.org/10.1587/transfun.e99.a.678.

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14

Li, Qian, Kwok H. Li, and Kah C. Teh. "Diversity-Multiplexing Tradeoff of Fading Interference Channels With Source Cooperation and Partial CSIT." IEEE Transactions on Information Theory 57, no. 5 (2011): 2781–804. http://dx.doi.org/10.1109/tit.2011.2120190.

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15

Wu, Jianjian, Xinyu Liu, Chanzi Liu, Chi-Tsun Cheng, and Qingfeng Zhou. "Fairness-Oriented Transmission Schemes for Multiuser MISO Broadcast Channels." Wireless Communications and Mobile Computing 2022 (November 18, 2022): 1–10. http://dx.doi.org/10.1155/2022/8172300.

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With the increasing number of Internet of Things (IoT), Industry 4.0 (I4.0), and mobile devices, it can be expected that base stations will have to serve more and more clients with a limited number of antennas. For their broadcast channels, nonorthogonal multiple access (NOMA) and blind interference alignment (BIA) are two efficient and commonly adopted transmission schemes. This paper conducts a comparison study on these techniques on a 3-user 2 × 1 multiple-input single-output (MISO) broadcast channel with a limited number of transmit antennas. Specifically, space-time block coding based NOMA (STBC-NOMA) and NOMA-assisted beamforming (NOMA-BF) are compared with BIA. Both perfect and imperfect successive interference cancellation (SIC) have been considered for NOMA-based schemes, and the theoretical achievable rates of all schemes have been derived. Furthermore, with a given fairness constraint among end users, the power allocation (PA) problems have been solved for cases when accurate channel state information is available at the transmitter (CSIT) as well as when only path loss information is available. Numerical results show the following: (1) none of the schemes under this study can always outperform the others under different SNR regions. (2) With imperfect SIC, NOMA-BF, and STBC-NOMA both suffer from a significant performance loss under a high SNR condition. (3) Fairness PA with only path loss information provides similar performance as that with perfect CSIT, thus partial CSIT is adequate for system or scheme designs in practice.

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16

Ekbatani, Siavash, Farzad Etemadi, and Hamid Jafarkhani. "Outage Behavior of Slow Fading Channels With Power Control Using Partial and Erroneous CSIT." IEEE Transactions on Information Theory 56, no. 12 (2010): 6097–102. http://dx.doi.org/10.1109/tit.2010.2078991.

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17

Piovano, Enrico, Hamdi Joudeh, and Bruno Clerckx. "Generalized Degrees of Freedom of the Symmetric Cache-Aided MISO Broadcast Channel With Partial CSIT." IEEE Transactions on Information Theory 65, no. 9 (2019): 5799–815. http://dx.doi.org/10.1109/tit.2019.2914204.

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18

Zhang, Yan-Yu. "Intrinsic Robustness of MISO Visible Light Communications: Partial CSIT Can be as Useful as Perfect One." IEEE Transactions on Communications 67, no. 2 (2019): 1297–312. http://dx.doi.org/10.1109/tcomm.2018.2874988.

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19

Mao, Yijie, and Bruno Clerckx. "Beyond Dirty Paper Coding for Multi-Antenna Broadcast Channel With Partial CSIT: A Rate-Splitting Approach." IEEE Transactions on Communications 68, no. 11 (2020): 6775–91. http://dx.doi.org/10.1109/tcomm.2020.3014153.

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20

Joudeh, Hamdi, and Bruno Clerckx. "Sum-Rate Maximization for Linearly Precoded Downlink Multiuser MISO Systems With Partial CSIT: A Rate-Splitting Approach." IEEE Transactions on Communications 64, no. 11 (2016): 4847–61. http://dx.doi.org/10.1109/tcomm.2016.2603991.

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21

Davoodi, Arash Gholami, and Syed Jafar. "Aligned Image Sets and the Generalized Degrees of Freedom of Symmetric MIMO Interference Channel With Partial CSIT." IEEE Transactions on Information Theory 65, no. 1 (2019): 406–17. http://dx.doi.org/10.1109/tit.2018.2873126.

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22

Joudeh, Hamdi, and Bruno Clerckx. "On the Separability of Parallel MISO Broadcast Channels Under Partial CSIT: A Degrees of Freedom Region Perspective." IEEE Transactions on Information Theory 66, no. 7 (2020): 4513–29. http://dx.doi.org/10.1109/tit.2019.2962136.

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23

Joudeh, Hamdi, and Bruno Clerckx. "Corrections to “On the Separability of Parallel MISO Broadcast Channels Under Partial CSIT: A Degrees of Freedom Region Perspective”." IEEE Transactions on Information Theory 66, no. 10 (2020): 6605. http://dx.doi.org/10.1109/tit.2020.3015638.

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24

Chiu, Eddy, Vincent K. N. Lau, Shunqing Zhang, and Bao S. M. Mok. "Precoder Design for Multi-Antenna Partial Decode-and-Forward (PDF) Cooperative Systems with Statistical CSIT and MMSE-SIC Receivers." IEEE Transactions on Wireless Communications 11, no. 4 (2012): 1343–49. http://dx.doi.org/10.1109/twc.2012.031212.110774.

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25

Barkovska, Olesia, Dmytro Mohylevskyi, Yuliia Ivanenko, and Dmytro Rosinskiy. "WAYS TO DETERMINE THE RANGE OF KEYWORDS IN A FREQUENCY DICTIONARY FOR TEXT CLASSIFICATION." Computer systems and information technologies, no. 1 (March 30, 2023): 14–20. http://dx.doi.org/10.31891/csit-2023-1-2.

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The paper is devoted to the actual problem of classifying textual documents of the collection by characteristic features, which is used for classifying news, reviews, determining the emotional tone of the text, as well as for forming catalogs of scientific, academic and research works. The paper proposes an approach for determining the significant words of a document for their further use as a feature vector in the classification process. In the course of the work, the author's keywords were identified, a partial dictionary was built, and the correlation between the author's keywords and the list of ordered words of the frequency dictionary based on the TF method, which also includes the author’s keywords, was analyzed. The determination of the range and percentage of significant words allows for further classification of scientific and research papers when forming thematic catalogs even in the absence of a list of author's keywords that can be used for classification. The results show that the use of the entire input range of frequency dictionary words is redundant and leads to a longer classification time.

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26

Ma, Yongtao, Linzhong Song, Yu Zhao, and Kaihua Liu. "A tight outer bound of the degrees of freedom for the MIMO interference channel with the delayed CSIT and partial local feedback." Journal of the Franklin Institute 352, no. 1 (2015): 291–310. http://dx.doi.org/10.1016/j.jfranklin.2014.10.026.

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27

Okhrimenko, Tetiana, Serhii Dorozhynskyi, and Bohdan Horbakha. "ANALYSIS OF QUANTUM SECURE DIRECT COMMUNICATION PROTOCOLS." Computer systems and information technologies, no. 1 (March 30, 2023): 62–67. http://dx.doi.org/10.31891/csit-2023-1-8.

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The development of modern computer technologies endangers the confidentiality of information, which is usually ensured by traditional cryptographic means. This circumstance forces us to look for new methods of protection. In view of modern trends, quantum cryptography methods can become such alternatives, which allow solving a number of important cryptographic problems, for which the impossibility of solving using only classical (that is, non-quantum) communication has been proven. Quantum cryptography is a branch of quantum informatics that studies methods of protecting information by using quantum carriers. The possibility of such protection is ensured by the fundamental laws of quantum mechanics. One of the promising directions of quantum cryptography is Quantum Secure Direct Communication (QSDC) that offers secure communication without any shared key. A characteristic feature of this method is the absence of cryptographic transformations, accordingly, there is no key distribution problem. The purpose of this work is a general overview of quantum cryptography protocols, finding their weak points for further development and improvement, as well as identifying vulnerabilities to different attacks. The article analyzes new methods and protocols, as well as presents their advantages and disadvantages. Based on partial generalizations of theoretical provisions and practical achievements in the field of quantum cryptography, a generalized classification was developed. By comparing various factors of the protocols, and their resistance to certain cyberattacks, we have the opportunity to identify several problems in this field and expand the possibilities for choosing appropriate methods for building modern quantum information protection systems. In accordance with this, conclusions were presented regarding the use of protocols and increasing the level of their effectiveness.

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28

Lee, Sungmin, and Moonsik Min. "Optimal Feedback Rate for Multi-Antenna Maximum Ratio Transmission in Single-User MIMO Systems with One-Bit Analog-to-Digital Converters in Dense Cellular Networks." Mathematics 12, no. 23 (2024): 3760. http://dx.doi.org/10.3390/math12233760.

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Stochastic geometry has emerged as a powerful tool for modeling cellular networks, especially in dense deployment scenarios where inter-cell interference is significant. Previous studies have extensively analyzed multi-antenna systems with partial channel state information at the transmitter (CSIT) using stochastic geometry models. However, most of these works assume the use of infinite-resolution analog-to-digital converters (ADCs) at the receivers. Recent advances in low-resolution ADCs, such as one-bit ADCs, offer an energy-efficient alternative for millimeter-wave systems, but the interplay between limited feedback and one-bit ADCs remains underexplored in such networks. This paper addresses this gap by analyzing the optimal feedback rate that maximizes net spectral efficiency in dense cellular networks, modeled using stochastic geometry, with both limited feedback and one-bit ADC receivers. We introduce an approximation of the achievable spectral efficiency to derive a differentiable expression of the optimal feedback rate. The results show that while the scaling behavior of the optimal feedback rate with respect to the channel coherence time remains unaffected by the ADC’s resolution, the absolute values are significantly lower for one-bit ADCs compared to infinite-resolution ADCs. Simulation results confirm the accuracy of our theoretical approximations and demonstrate the impact of ADC resolution on feedback rate optimization.

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29

BARKOVSKA, OLESIA, ANTON HAVRASHENKO, VLADYSLAV KHOLIEV, and OLENA SEVOSTIANOVA. "AUTOMATIC TEXT TRANSLATION SYSTEM FOR ARTIFICIAL LLANGUAGES." Computer systems and information technologies, no. 3 (April 14, 2022): 21–30. http://dx.doi.org/10.31891/csit-2021-5-3.

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The growing number and variety of artificial languages leads to the need and relevance of creating automatic dictionaries for their translation in order to facilitate human communication. Such languages include languages where vocabulary, phonetics, and grammar have been specifically designed to achieve specific goals and to communicate with a group of people by interests or place of residence. These languages can be distributed among people of certain professions or among neighboring nations. Examples are slang and surzhik. The common for them is that there is a basic language (literary), the intersection in spelling and meaning of words and phrases with which is quite large. The main goal of the project is to create a system of automatic translation of words and texts from / into arbitrary languages, including hybrid, artificial and slang ones. The proposed model shows the interaction and partial interdependence of the creation and adjustment modules and the translation module of the dictionary, which is explained by tacking the approach of reverse propagation of the translation error. To perform experiments and analyze the performance of the proposed approach to the organization of automatic translation of texts from and into arbitrary language, a software application was developed, which includes a subprogram of initial word processing for dictionary organization, one for creating a working dictionary and one for two-way improvement of created dictionary by the inclusion of new texts in order to improve the quality of translation, including the search for word phrases, idiom, and translation for them, the subprogram of dividing the dictionary into sub-dictionaries with a small percentage of text, the subprogram of the translator itself. To test and analyze the results of the proposed generalized model, three types of source texts were used: literary poetry translation, literary prose translation, literal prose translation. The results of the experiments showed that the proposed approach provides a high level of translation (up to 98,8%) in similar languages (between such languages as Ukrainian-Russian, or Ukrainian - Ukrainian-Russian surzhik wih equal word order in the sentence), especially with a literally translated source text. It has become known that the use of artistic texts to generate dictionaries is possible, but not very effective.

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30

Gholami Davoodi, Arash, and Syed Jafar. "Degrees of Freedom Region of the (M, N₁, N₂) MIMO Broadcast Channel With Partial CSIT: An Application of Sum-Set Inequalities Based on Aligned Image Sets." IEEE Transactions on Information Theory 66, no. 10 (2020): 6256–79. http://dx.doi.org/10.1109/tit.2020.3009614.

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31

Molnárová, Orsolya, Stanislav Habr, Esther de Prado, et al. "Microstructural Evolution of a 3003 Based Aluminium Alloy during the CSET Process." Materials 14, no. 19 (2021): 5770. http://dx.doi.org/10.3390/ma14195770.

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A new severe plastic deformation technique, known as the complex shearing of extruded tube (CSET), was applied to a 3003 based model aluminium alloy. This technique, consisting of a combination of extrusion and two consecutive Equal Chanel Angular Pressing (ECAP) passes accompanied with concurrent torsional straining, is capable to produce a fine-grained tubular sample directly from a bulk metallic cylinder in one forming operation. In the present paper, the microstructural development of the alloy during partial processes of CSET was studied in detail using light microscopy, electron backscatter diffraction, and transmission electron microscopy. It was found that CSET technique refines the grain size down to 0.4 µm and, consequently, increases the microhardness from the initial value of 40 HV to the final value of 120 HV. The contributions of partial processes of CSET to the total strain were estimated.

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32

Akai, F., S. Nakagawa, T. Fukawa, H. Yugami, and M. Taneda. "Symptomatic Cavernous Internal Carotid Artery Aneurysms Treated with Detachable Coils." Interventional Neuroradiology 9, no. 1_suppl (2003): 89–94. http://dx.doi.org/10.1177/15910199030090s111.

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We reviewed the cranial nerve dysfunctions of eight patients with symptomatic cavernous internal carotid (CSIC) aneurysms treated by endovascular intraaneurysmal occlusion. Aneurysms were classified into three types according to their location and direction of growth. Anterior type aneurysms, which involved anterior bend of CSIC represented third nerve dysfunction. Posterior type aneurysms, which located posterior bend of CSIC preferred to affect sixth nerve function. CSIC aneurysms that extended over the both bends had total ophthalmoplegia. All patients responded to endovascular treatment, though partial resolution was recorded in the case of upward gaze or lateral gaze impairment. Endovascular treatment with detachable coils offers an excellent alternative with acceptable risks of morbidity.

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33

Blair, Joanne, Andrew McKay, Colin Ridyard, et al. "Continuous subcutaneous insulin infusion versus multiple daily injections in children and young people at diagnosis of type 1 diabetes: the SCIPI RCT." Health Technology Assessment 22, no. 42 (2018): 1–112. http://dx.doi.org/10.3310/hta22420.

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Background The risk of developing long-term complications of type 1 diabetes (T1D) is related to glycaemic control and is reduced by the use of intensive insulin treatment regimens: multiple daily injections (MDI) (≥ 4) and continuous subcutaneous insulin infusion (CSII). Despite a lack of evidence that the more expensive treatment with CSII is superior to MDI, both treatments are used widely within the NHS. Objectives (1) To compare glycaemic control during treatment with CSII and MDI and (2) to determine safety and cost-effectiveness of the treatment, and quality of life (QoL) of the patients. Design A pragmatic, open-label randomised controlled trial with an internal pilot and 12-month follow-up with 1 : 1 web-based block randomisation stratified by age and centre. Setting Fifteen diabetes clinics in hospitals in England and Wales. Participants Patients aged 7 months to 15 years. Interventions Continuous subsutaneous insulin infusion or MDI initiated within 14 days of diagnosis of T1D. Data sources Data were collected at baseline and at 3, 6, 9 and 12 months using paper forms and were entered centrally. Data from glucometers and CSII were downloaded. The Health Utilities Index Mark 2 was completed at each visit and the Pediatric Quality of Life Inventory (PedsQL, diabetes module) was completed at 6 and 12 months. Costs were estimated from hospital patient administration system data. Outcomes The primary outcome was glycosylated haemoglobin (HbA1c) concentration at 12 months. The secondary outcomes were (1) HbA1c concentrations of < 48 mmol/mol, (2) severe hypoglycaemia, (3) diabetic ketoacidosis (DKA), (4) T1D- or treatment-related adverse events (AEs), (5) change in body mass index and height standard deviation score, (6) insulin requirements, (7) QoL and (8) partial remission rate. The economic outcome was the incremental cost per quality-adjusted life-year (QALY) gained. Results A total of 293 participants, with a median age of 9.8 years (minimum 0.7 years, maximum 16 years), were randomised (CSII, n = 149; MDI, n = 144) between May 2011 and January 2015. Primary outcome data were available for 97% of participants (CSII, n = 143; MDI, n = 142). At 12 months, age-adjusted least mean squares HbA1c concentrations were comparable between groups: CSII, 60.9 mmol/mol [95% confidence interval (CI) 58.5 to 63.3 mmol/mol]; MDI, 58.5 mmol/mol (95% CI 56.1 to 60.9 mmol/mol); and the difference of CSII – MDI, 2.4 mmol/mol (95% CI –0.4 to 5.3 mmol/mol). For HbA1c concentrations of < 48 mmol/mol (CSII, 22/143 participants; MDI, 29/142 participants), the relative risk was 0.75 (95% CI 0.46 to 1.25), and for partial remission rates (CSII, 21/86 participants; MDI, 21/64), the relative risk was 0.74 (95% CI 0.45 to 1.24). The incidences of severe hypoglycaemia (CSII, 6/144; MDI, 2/149 participants) and DKA (CSII, 2/144 participants; MDI, 0/149 participants) were low. In total, 68 AEs (14 serious) were reported during CSII treatment and 25 AEs (eight serious) were reported during MDI treatment. Growth outcomes did not differ. The reported insulin use was higher with CSII (mean difference 0.1 unit/kg/day, 95% CI 0.0 to 0.2 unit/kg/day; p = 0.01). QoL was slightly higher for those randomised to CSII. From a NHS perspective, CSII was more expensive than MDI mean total cost (£1863, 95% CI £1620 to £2137) with no additional QALY gains (–0.006 QALYs, 95% CI –0.031 to 0.018 QALYs). Limitations Generalisability beyond 12 months is uncertain. Conclusions No clinical benefit of CSII over MDI was identified. CSII is not a cost-effective treatment in patients representative of the study population. Future work Longer-term follow-up is required to determine if clinical outcomes diverge after 1 year. A qualitative exploration of patient and professional experiences of MDI and CSII should be considered. Trial registration Current Controlled Trials ISRCTN29255275 and EudraCT 2010-023792-25. Funding This project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 22, No. 42. See the NIHR Journals Library website for further project information. The cost of insulin pumps and consumables supplied by F. Hoffman-La Roche AG (Basel, Switzerland) for the purpose of the study were subject to a 25% discount on standard NHS costs.

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Aziz, Mohd Amar, Noor Hadzlida Ayob, Nor Azira Ayob, Yarina Ahmad, and Kamaruddin Abdulsomad. "Factors influencing farmer adoption of climate-smart agriculture technologies: Evidence from Malaysia." Human Technology 20, no. 1 (2024): 70–92. http://dx.doi.org/10.14254/1795-6889.2024.20-1.4.

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As technology advances, people become increasingly dependent on technological tools to increase their work efficiency and productivity. Farming methods in the agriculture sector are also undergoing a shift from conventional to technology-driven modern agriculture practices, primarily because of their benefits and potential to mitigate the effects of climate change. However, the adoption rate of climate-smart agriculture technologies (CSAT) is considered to be very slow. Thus, this study was conducted to examine the factors that lead farmers to adopt CSAT in their agricultural practices. A sample of 185 farmers was used to investigate the main influencing factors in four contexts. The developed model was analyzed using the partial least squares structural equation modeling method. The results of this study suggest that institutions play a critical role as a contextual factor that leads individuals and societies to engage with CSAT, builds confidence, and convinces farmers to adopt these technologies.

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35

Liu, Li, and Luo. "Effect of Carboxymethylation and Phosphorylation on the Properties of Polysaccharides from Sepia esculenta Ink: Antioxidation and Anticoagulation in Vitro." Marine Drugs 17, no. 11 (2019): 626. http://dx.doi.org/10.3390/md17110626.

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To investigate the effect of carboxymethylation and phosphorylation modification on Sepia esculenta ink polysaccharide (SIP) properties, this study prepared carboxymethyl SIP (CSIP) with the chloracetic acid method, and phosphorylated SIP (PSIP) with the sodium trimetaphosphate (STMP)/sodium tripolyphosphate (STPP) method, on the basis of an orthogonal experiment. The in vitro antioxidant and anticoagulant activities of the derivatives were determined by assessing the scavenging capacity of the 1,1-diphenyl-2-picrylhydrazyl (DPPH) and hydroxyl radicals, which activated the partial thromboplastin time (APTT), prothrombin time (PT), and thrombin time (TT). The results showed that SIP was modified successfully to be CSIP and PSIP, and degrees of substitution (DSs) of the two products were 0.9913 and 0.0828, respectively. Phosphorylation efficiently improved the antioxidant property of SIP, and the IC50 values of PSIP on DPPH and hydroxyl radicals decreased by 63.25% and 13.77%, respectively. But carboxymethylation reduced antioxidant activity of the native polysaccharide, IC50 values of CSIP on the DPPH and hydroxyl radicals increased by 16.74% and 6.89%, respectively. SIP significantly prolonged the APTT, PT, and TT in a dose-dependent fashion, suggesting that SIP played an anticoagulant action through intrinsic, extrinsic, and common coagulation pathways. CSIP and PSIP both possessed a stronger anticoagulant capacity than SIP via the same pathways; moreover, CSIP was observed to be more effective in prolonging APTT and PT than PSIP.

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YuSheng, Kong, and Masud Ibrahim. "Service innovation, service delivery and customer satisfaction and loyalty in the banking sector of Ghana." International Journal of Bank Marketing 37, no. 5 (2019): 1215–33. http://dx.doi.org/10.1108/ijbm-06-2018-0142.

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Purpose The concept of innovation is gaining ground steadily in the context of an increasingly competitive and highly volatile banking sector. The purpose of this paper is to find out the role of service innovation (SI) in the relationship between service delivery (SERVD), customer satisfaction (CSAT) and loyalty in the banking sector of Ghana. Design/methodology/approach Drawing from banking and marketing literature, a conceptual framework was developed and tested using data from 450 sampled customers of commercial banks in Ghana. The data were analyzed using partial least squares structural equation modeling. Findings The findings indicate that SI has direct influence on SERVD and CSAT. Again the findings revealed a positive relationship between SERVD, CSAT and bank customer loyalty. Research limitations/implications This study offers theoretical support for the adoption of innovative techniques in service provision and delivery. Originality/value This paper provides an initial study into innovation management in financial services context in an emerging economy.

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BENATTIA, MOHAMED ELARBI, and KACEM BELGHABA. "INVESTIGATION OF CONFORMABLE DOUBLE SHEHU TRANSFORM FOR SOLVING SOME FRACTIONAL DIFFERENTIAL PARTIAL EQUATIONS." Journal of Science and Arts 23, no. 2 (2023): 355–66. http://dx.doi.org/10.46939/j.sci.arts-23.2-a03.

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In this paper, we generalize the concept of single conformable Sehu transformation (CSHT) to double conformable transformation (CDFSHT). Moreover, we are able to prove some theorems and properties related to this work. We apply the double conformable Sehu transform to solve the initial and boundary problems of linear and (non)homogenous conformable fractional partial differential equations (PDEs). The validity and the applicability of the proposed technique are shown by three numerical examples. Mathematica software is used for Euclidean division of polynomials and drawing graphs.

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Huangfu, Huihui, Qinwen Yu, Peiwu Shi, et al. "The Impacts of Regional Regulatory Policies on the Prevention and Control of Chronic Diseases in China: A Mediation Analysis." Healthcare 9, no. 8 (2021): 1058. http://dx.doi.org/10.3390/healthcare9081058.

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Regional regulatory policies (RPs) are a major factor in the prevention and control of chronic diseases (PCCDs) through the implementation of various measures. This study aimed to explore the impacts of RPs on PCCDs, with a focus on the mediating roles of community service. The soundness of the regulatory mechanism (SORM) was used to measure the soundness of RPs based on 1095 policy documents (updated as of 2015). Coverage provided by community service institutions (CSIs) and community health centres (CHCs) was used to represent community service coverage derived from the China Statistical Yearbook (2015), while the number of chronic diseases (NCDs) was used to measure the effects of PCCDs based on data taken from the 2015 China Health and Retirement Longitudinal Study survey. To assess the relationship between SORM, NCDs and community service, a negative binomial regression model and mediation analysis with bootstrapping were conducted. Results revealed that there was a negative correlation between SORM and NCDs. CSIs had a major effect on the relationship between RPs and PCCDs, while CHCs had a partial mediating effect. RPs can effectively prevent and control chronic diseases. Increased effort should also be aimed at strengthening the roles of CSIs and CHCs.

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39

Laptev, D. N., and D. Y. Sorokin. "Neural network based clinical decision support system for the calculation the initial continuous subcutaneous insulin infusion settings." Diabetes mellitus 27, no. 6 (2025): 555–64. https://doi.org/10.14341/dm13081.

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BACKGROUND: Despite existing recommendations for the initial calculation of insulin pump settings, the process is largely subjective and depends on the physician’s personal experience.AIM: Development of a clinical decision support system (CDSS) that determines the initial settings of the insulin pump, which would have satisfactory agreement with the expert opinion of physicians.MATERIALS AND METHODS: Neural network model developed using data (continuous subcutaneous insulin infusion (CSII) settings, age, weight, total daily dose, and HbA1c) from 2850 children with T1D who were switched to CSII and achieved optimal glycemic control according to glucose levels. CDSS utilizing the model implemented as a computer program in Python.A prospective assessment of the agreement between the recommendations of the CDSS and the physician conducted on 35 data sets of children with T1D (median age 9.3 years [6.4, 11.5]), and 840 points for decisions were analyzed. 4 degrees of agreement were used: complete consistency, when the physicians agreed with the CDSS recommendations; partial consistency, when the physicians didn’t agree with the CDSS recommendations, but the difference was in the range of ±15%; complete inconsistency — the difference more than ±15%; acceptable consistency is the sum of full and partial consistency (± 15% error is clinically acceptable). The null hypothesis of the study was the absence of difference in consistency/inconsistency between physicians and the CDSS.RESULTS: The frequency of full consistency between CDSS and physician recommendations for initiating insulin pump therapy is 29.8-43.8%, and inconsistency is 33.7-41.1%. Acceptable consistency is 58.9–66.3%. There were no significant differences in mean insulin pump parameters between CDSS and physicians.CONCLUSION: The results obtained are consistent with previous studies. Proposed model demonstrates acceptable performance regarding initial CSII settings, without significant deviations between various parameters.

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Patel, Sagarkumar, Harishkumar B. Chaudhari, Dharmendra Chauhan, Hardik Modi, Hiren Mewada, and Sagar Kavaiya. "Performance Analysis of Generalized Quadrature Spatial Modulation with Quasi-Orthogonal Space-Time Block Codes Under Nakagami m-Fading Channels." Telecom 6, no. 2 (2025): 43. https://doi.org/10.3390/telecom6020043.

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Spatial Modulation (SM) is a promising technique for future wireless communication systems, as it reduces hardware cost and complexity while maintaining good bit error rate (BER) performance in MIMO systems. However, in real-world scenarios, systems often face challenges like antenna correlation and partial knowledge of the channel at the receiver (CSIR). This paper examines the performance of a new communication method called Generalized Quadrature Spatial Modulation (GQSM), combined with Quasi-Orthogonal Space-Time Block Codes (QOSTBC), under realistic fading conditions using Nakagami-m channels. To address the impact of imperfect CSIR, the paper introduces three new QR decomposition-based detection techniques. These methods are specifically designed to reduce errors and enhance reliability in conditions where traditional maximum likelihood (ML) detection performs poorly. A detailed theoretical analysis of all three detection schemes is provided to explain their performance and advantages. Among them, Technique III yields the best results in extensive Monte Carlo simulations, demonstrating improved error performance with significantly lower computational complexity than ML detection. Overall, the proposed detection methods not only overcome the limitations of ML detection but also provide a practical and scalable solution for challenging wireless environments by effectively leveraging the numerical stability of QR decomposition.

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Kim, Seong-Hwan, Joo-Youl Huh, Myung-Soo Kim, and Jong-Sang Kim. "Effects of Oxygen Partial Pressure on Oxidation Behavior of CMnSi TRIP Steel in an Oxidation-Reduction Scheme." Corrosion Science and Technology 16, no. 1 (2017): 15–22. http://dx.doi.org/10.14773/cst.2017.16.1.15.

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Budiman, Firmansyah Nur, and Ali Muhammad Rushdi. "Dimensional analysis of partial discharge initiated by a metallic particle adhering to the spacer surface in a gas-insulated system." Communications in Science and Technology 6, no. 2 (2021): 91–100. http://dx.doi.org/10.21924/cst.6.2.2021.556.

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Partial discharges (PDs) constitute important phenomena in a Gas-Insulated System (GIS) that warrant recognition (and, subsequently, mitigation) as they are obvious symptoms of system degradation. This paper proposes the application of dimensional analysis, based on Buckingham pi theorem, for characterizing PDs provoked by the presence of metallic particles adhering to the spacer surface in a GIS employing SF6 (Sulphur hexafluoride). The ultimate goal of the analysis is to formulate the relationships that express three PD indicator quantities, namely current, charge, and energy, in terms of six independent quantities that collectively influence these indicators. These six quantities (henceforth referred to as the influencing, determining or affecting variables) include the level of applied voltage, the SF6 pressure, the length and position of the particle on the spacer, the duration of voltage application, and the gap between electrodes. To compute the pertinent dimensionless products, we implement three computational methods based on matrix operations. These three methods produce exactly the same dimensionless products, which are subsequently used for constructing the models depicting the relationships between each of the three PD dependent quantities and the common six determining variables. The models derived provide partial quantitative information and facilitate qualitative reasoning about the considered phenomenon.

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Saidaiah, B., A. Sudhakar, and Raju K. Padma. "A New Olympic Ring Shaped Antenna for UWB Applications." Engineering, Technology & Applied Science Research 6, no. 3 (2016): 1010–12. https://doi.org/10.5281/zenodo.55386.

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In this paper, we propose a new Olympic Ring Shaped antenna for UWB applications. The proposed antenna is designed to operate from 3.1 to 10.6 GHz. It consists of a five circular ring shapes form an Olympic ring shape with a partial ground plane. A detail of proposed antenna simulation is done using CST software and measured results are presented and discussed.

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Tomotani, Barbara M., Rodrigo B. Salvador, Amandine J. M. Sabadel, et al. "Extreme bill dimorphism leads to different but overlapping isotopic niches and similar trophic positions in sexes of the charismatic extinct huia." Oecologia 198, no. 1 (2021): 67–77. http://dx.doi.org/10.1007/s00442-021-05082-8.

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AbstractThe New Zealand huia (Heteralocha acutirostris) had the most extreme bill sexual dimorphism among modern birds. Given the quick extinction of the species, the cause of the dimorphism could only be hypothesised to reflect different trophic niches and reduce male/female competition. We tested that hypothesis by combining museum specimens, geometric morphometrics, and isotopic analyses. We used geometric morphometrics to describe bill shape; measured bulk (δ15Nbulk) and (δ13Cbulk) values from feather as proxies of the birds’ foraging habitat and diet; and compared compound-specific stable isotopes analyses (CSIA) of nitrogen in amino acids (δ15NAA) in male–female pairs to estimate their trophic position. Sexes had significantly different, but overlapping feather δ15Nbulk and δ13Cbulk values, but δ15NAA indicated identical trophic positions and δ15Nbulk was not related to bill shape. Trophic position was less variable among females, consistent with a specialised foraging behaviour and, thus, supporting a partial male/female foraging segregation.

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Findlay, Izac, Dilana Staudt, Padraic Kearney, et al. "CSIG-10. PHARMACO-PHOSPHO-PROTEO-GENOMICS OF PEDIATRIC HIGH-GRADE GLIOMAS – A PILOT STUDY." Neuro-Oncology 24, Supplement_7 (2022): vii40—vii41. http://dx.doi.org/10.1093/neuonc/noac209.159.

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Abstract Pediatric high-grade gliomas (pHGG) are the leading cause of cancer-related death in children and young adults. Current treatment strategies are centered on maximal safe resection, followed by radiotherapy, and interrogation of the tumor genome to identify targetable mutations. Unfortunately, we are yet to see an improvement in patient outcomes with a median overall survival remaining 15-months. To improve patient outcomes, we have begun to characterize the genome, proteome, and phosphoproteome of 168 pHGGs to better understand the functional consequences of their somatic alterations as well as their influence of the tumor microenvironment. Employing a novel ‘pharmaco-phospho-proteo-genomics’ pipeline, we have analyzed pHGG cell lines and tumor tissue specimens at diagnosis, relapse (partial resection congenital glioblastoma), and autopsy. Genomic profiling was conducted utilizing the 523-gene TruSight Oncology 500 (TSO500) next-generation sequencing panel. Simultaneously, tumor proteomes and phosphoproteomes were characterized using our high-throughput global phospho-proteomic profiling technique termed pHASED (phospho Heavy-labelled-spiketide FAIMS StEpped-CV DDA). High-fidelity tumor proteomic and phospho-proteomic data were identified and compared to normal control brain samples. Across 40 pHGG samples, we identified 290 unique somatic alterations with a high predicted impact severity and quantified 7,345 unique proteins and 3,327 phosphoproteins. Gene panel sequencing of a critical pediatric glioblastoma patient sample identified 18 somatic alterations, eight of which had a high predicted impact severity, however, none were targetable. Conversely, phosphoproteomic profiling identified enriched MAPK and PRKCB signaling, relative to normal brain tissues, thereby encouraging the use of the TGA/FDA approved therapies trametinib (MAPKs) and enzastaurin (PRKCB). In vitro investigations confirmed the utility of these treatment approaches and in vivo patient derives xenograft mouse models for this sample are under investigation. This pilot study provides critical data to support the benefit of interrogating the genome, proteome, and phospho-proteome of these devastating tumours to aid in the selection/development of effective treatment strategies.

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Harsimran, Kaur, Bobade Hanuman, Singh Arashdeep, Singh Baljit, and Sharma Savita. "Effect of Formulations on Functional Properties and Storage Stability of Nutritionally Enriched Multigrain Pasta." Chemical Science International Journal 19, no. 1 (2017): 1–9. https://doi.org/10.9734/CSIJ/2017/33348.

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High fiber low gluten whole grain flours of wheat, barley, soybean, maize, millets, mungbean, oats and flaxseeds were blended in various proportions as a partial replacement for wheat flour along with Xanthan gum @ 2% for the development of nutritionally enriched pasta. Prepared pasta samples were assessed for cooking quality, color characteristics, sensory properties and selected samples were packed in HDPE bags and stored for 90 days and the stored samples were analyzed for changes in their moisture content, free fatty acids, water activity, cooking quality and overall acceptability at 30 days interval. Substitution of wheat flour by multigrain flour in pasta making significantly (p<0.05) increased the water absorption and volume expansion while it significantly (p<0.05) decreased the cooking time. The loss of solids in cooking water increased significantly (p<0.05) with the use of multigrain flour. Color characteristics and overall acceptability scores of multigrain pasta were comparable with pasta made of wheat flour. Cooking quality of pasta was not significantly influenced by the 90 days storage period. Significant (p<0.05) increase in moisture content, water activity and free fatty acid was found during the 90 days storage. However, the changes in quality parameters during storage were well within the limit and in acceptable range.

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Vereskun, Aleksei V., and Aleksander S. Kotosonov. "Improvement of the Unified State System for Emergency Situations Prevention and Response Activities on the Elimination of Emergencies in the Conditions of Full and (or) Partial Restriction of the Electric Energy Consumption Mode." Технологии гражданской безопасности 19, no. 2 (2022): 81–85. http://dx.doi.org/10.54234/cst.19968493.2022.19.2.72.15.81.

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Shchurova, Elena N., Oxana G. Prudnikova, Anastasiia A. Kachesova, Marat S. Saifutdinov, and Marina S. Tertyshnaya. "Improvement of Functional State of Patients after Spinal Cord Injury During Epidural Electrical Stimulation: Prospective Study." Bulletin of Rehabilitation Medicine 22, no. 6 (2024): 28–41. http://dx.doi.org/10.38025/2078-1962-2023-22-6-28-41.

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the lack of convincing evidence of a therapeutic effect. AIM. To evaluate the effect of complex rehabilitation using EPS and activation of the proprioceptive apparatus on the indicators of the functional state of patients with long-term consequences of spinal cord injury with partial spinal cord injury. MATERIALS AND METHODS. A prospective study was conducted with the participation of 29 patients with long-term consequences of spinal cord injury with partial spinal cord injury. The catamnesis of the disease was 3.7 ± 0.5 years. Comprehensive rehabilitation included epidural electrical stimulation by implantable electrode and activation of the proprioceptive apparatus. The neurological (ASIA scale) and functional (CSIM III scale) status of the patient was analyzed. Motor function was evaluated using 10-meter Walk test; M-responses of limb muscles — using electromyography, temperature and pain sensitivity — using esthesiometry. RESULTS. An increase in muscle strength and M-response of the muscles of the extremities, normalization of the motor deficit index, reduction of the walking test time, increase in movement speed and the patient’s independence index were revealed. There is an improvement in temperature and pain sensitivity at the level of damage and in the dermatomes located distally. The effect decreases in dermatomes far from the level of the electrode installation; but with increase in the number of courses the effect increases. DISCUSSION. The results obtained indicate that this rehabilitation complex, including UES, has a positive effect on the functioning of both the motor and sensitive spheres. CONCLUSION. Application of EES and activation of the proprioceptive apparatus improves the functional condition of sensorimotor sphere in the long-term consequences of spinal cord injury with partial spinal cord damage. Repeated rehabilitation courses have cumulative effect.

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Baykal, Duru, Hazal Ser, Jessica White, et al. "CSIG-29. BRAF INHIBITOR THERAPY IN BRAF-MUTATED PRIMARY BRAIN TUMORS: A SINGLE-CENTER EXPERIENCE." Neuro-Oncology 26, Supplement_8 (2024): viii70. http://dx.doi.org/10.1093/neuonc/noae165.0278.

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Abstract BACKGROUND BRAF pathway alterations are frequent in glial/neuroepithelial tumors. BRAF-targeted therapy with BRAF inhibitors (BRAFi) and/or MEK inhibitors (MEKi) has proven efficacy in clinical trials, though mainly enrolling pediatric patients. We sought to investigate real-world data for adult patients with BRAF-pathway mutant glial/neuroepithelial neoplasms treated with BRAFi/MEKi. METHODS Adults with BRAF-pathway mutated glial/neuroepithelial neoplasms treated with BRAFi/MEKi were retrospectively reviewed. RESULTS Five patients (n=4 female, median age at diagnosis 36) were identified (tumor types: glioblastoma n=1, high-grade astrocytoma with epithelioid features n=1, low-grade neuroepithelial tumor n=1, pilocytic astrocytoma n=1, pleomorphic xanthoastrocytoma n=1). Four had BRAF V600E and one had NF1 p.S2687Cfs*5 mutant tumors. Prior to targeted therapy initiation, patients underwent a median 2.4 treatments including surgery (n=4), radiation therapy (n=4), chemotherapy (temozolomide n=4; carboplatin/vincristine n=1). BRAF-targeted therapies included dabrafenib/trametinib (n=4), binimetinib/encorafenib (n=2), binimetinib (n=2). One NF1-mutant glioblastoma received binimetinib followed by binimetinib/bevacizumab. Median BRAFi/MEKi treatment was 15.2 months (range: 6-36 months). Toxicities included leukopenia (n=3), peripheral edema (n=1), reduced ejection fraction (n=1), skin rash (n=5), transaminitis (n=1) with all patients requiring dose reductions and 3 cases requiring discontinuation. Among patients where BRAFi/MEKi was discontinued due to toxicity, 2 received other treatments at progression, then switched to a different BRAFi/MEKi combination, which they tolerated (duration 6-10months). Best radiographic response was partial response, noted in 3 patients treated with dabrafenib/trametinib. Four patients remain alive and continue BRAFi/MEKi. CONCLUSIONS In this cohort of heavily-pretreated patients with glial/neuroepithelial neoplasms, BRAF-targeted therapy was associated with durable responses. Interestingly, two patients who were unable to tolerate one combination of BRAFi/MEKi were able to tolerate a different combination with sustained response. Our findings support ongoing use of BRAF targeted therapy for CNS tumors. Optimal timing and duration of treatment requires further prospective evaluation in adult patients.

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Alkhushayni, Suboh, Du’a Al-zaleq, Luwis Andradi, and Patrick Flynn. "The Application of Differing Machine Learning Algorithms and Their Related Performance in Detecting Skin Cancers and Melanomas." Journal of Skin Cancer 2022 (May 4, 2022): 1–11. http://dx.doi.org/10.1155/2022/2839162.

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Skin cancer, and its less common form melanoma, is a disease affecting a wide variety of people. Since it is usually detected initially by visual inspection, it makes for a good candidate for the application of machine learning. With early detection being key to good outcomes, any method that can enhance the diagnostic accuracy of dermatologists and oncologists is of significant interest. When comparing different existing implementations of machine learning against public datasets and several we seek to create, we attempted to create a more accurate model that can be readily adapted to use in clinical settings. We tested combinations of models, including convolutional neural networks (CNNs), and various layers of data manipulation, such as the application of Gaussian functions and trimming of images to improve accuracy. We also created more traditional data models, including support vector classification, K-nearest neighbor, Naïve Bayes, random forest, and gradient boosting algorithms, and compared them to the CNN-based models we had created. Results had indicated that CNN-based algorithms significantly outperformed other data models we had created. Partial results of this work were presented at the CSET Presentations for Research Month at the Minnesota State University, Mankato.

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