2,990 research outputs found
Extend and expanded role of Nurses
No full textArticle Type: Editorial
Title: Extend and expanded role of Nurses
Year: 2022; Volume: 2; Issue: 3; Page No: 3 – 4
Author: Sumathi Senthilvel*
https://doi.org/10.55349/ijmsnr.20222334
Affiliation: Associate Editor, International Journal of Medical Sciences and Nursing Research, Coimbatore, Tamil Nadu, India.
Email ID: [email protected]
Article Summary: Submitted : 07-July-2022; Revised: 17-August-2022; Accepted: 06-September-2022; Published: 30-September-2022Editorial Articl
“We need to think beyond images as a reflection of history, and instead consider how they constitute it” – Sumathi Ramaswamy
No full textIn May, Sumathi Ramaswamy visited LSE to talk about the artist M. F. Husain and how his work contributed to the aesthetics of India’s Emergency. After her presentation, she spoke to Sonali Campion about visual history, the challenge of making artwork more widely available, and why Husain is such a controversial artist in India
Cross-layer aware transport protocols for wireless networks
No full textThis dissertation addresses the problem of reliable file transfer over single-hop and multi-hop shared-media wireless networks which are generally characterized by fluctuating bandwidth and error characteristics. Traditional reliable file transport protocols such as TCP assume relatively slow-varying links and were not generally designed to deal with interference problems of shared media wireless networks. The large performance gap between unreliable UDP and reliable TCP motivates the investigation of new transport protocols that might achieve significantly faster file transfer than TCP on wireless media.
CLAP - a Cross Layer Aware transport Protocol has been developed as a general solution for reliable file transfer, with decoupled flow control and error control to accommodate time-varying links. Error control in CLAP was designed to minimize interference and round-trip time estimation. Flow control in the proposed transport protocol leverages MAC status information via a novel cross-layer software framework (CLF), developed to provide systematic access to intra-node and inter-node status information.
Single hop evaluations, which consider an 802.11b wireless LAN with wired backhaul, were carried out using both NS2 simulations and ORBIT test-bed experiments. In time-varying, high loss scenarios, TCP shuts down operation without MAC retries, while an early CLAP version (CLAP-beta) achieves over 68% of upper-bound UDP performance. In noise-free scenarios, a "skip-ACKs" TCP modification to reduce interference achieves limited gains since TCP flow control depends on regular ACKs, while CLAP-beta approaches peak UDP performance by fully using the bandwidth available.
Multi-hop evaluations with NS2 simulations consider a 3-hop primary path in a 4x4 wireless mesh over 802.11b single-channel interfaces. Occasional background flows and on-off channel noise injection produce bandwidth and error fluctuations. These simulations expose the general multi-hop wireless problem where self interference in the forward path significantly reduces end-to-end bandwidth. Increasing interference and random packet losses tend to degrade TCP performance even more significantly than in 1-hop scenarios. Here, CLAP-final with improvements (relative to CLAP-beta) to reduce dependence on RTT estimation achieves over 90% of UDP performance in a variety of time-varying conditions.
This thesis demonstrates the efficacy of reliable file transfer using CLAP to address interference and time-varying links in both single- and multi-hop wireless network scenarios. Future research opportunities include cross-layer techniques for error control, efficient inter-node protocols for CLF, and tighter integration with mesh network routing protocols.Ph.D.Includes bibliographical references (p. 108-113).by Sumathi Gopa
Contemporary Challenges in Maternal Health
No full textArticle Type: Editorial
Title: Contemporary Challenges in Maternal Health
Year: 2023; Volume: 3; Issue: 2; Page No: 4 – 5
Author: Sumathi Senthilvel*
https://doi.org/10.55349/ijmsnr.20233245
Affiliations: Associate Editor, International Journal of Medical Sciences and Nursing Research, Coimbatore, Tamilnadu, India. Email ID: [email protected]
Article Summary: Submitted: 29-April-2023; Revised: 18-May 2023; Accepted: 16–June2023; Published: 30-June-2023Editorial Article by Associate Editor of International Journal of Medical Sciences and Nursing Researc
IMPLEMENTASI METODE RCWMCAM DAN SUMATHI-SATHIYA UNTUK MEMINIMUMKAN BIAYA DISTRIBUSI (Studi Kasus: Mata Air Sikumbang Kampar)
No full textIMPLEMENTASI METODE RCWMCAM DAN SUMATHI-SATHIYA
UNTUK MEMINIMUMKAN BIAYA DISTRIBUSI
(Studi Kasus: Mata Air Sikumbang Kampar)
LISA AL FATA
NIM: 11950420642
Tanggal Sidang : 13 Januari 2023
Tanggal Wisuda :
Program Studi Matematika
Fakultas Sains dan Teknologi
Universitas Islam Negeri Sultan Syarif Kasim Riau
Jl. HR. Soebrantas No. 155 Pekanbaru
ABSTRAK
Persaingan industri begitu ketat dalam pendistribusian suatu barang. Salah satu usaha yang
bergerak dibidang pendistribusian barang adalah usaha air minum Mata Air Sikumbang Kampar.
Distributor Mata Air Sikumbang Kampar dihadapkan pada permasalahan semakin tingginya biaya
distribusi karena tidak teraturnya pola pendistribusian. Sehingga, penelitian ini bertujuan untuk
mengoptimalkan biaya distribusi pada usaha air minum Mata Air Sikumbang Kampar supaya
biaya pendistribusian yang dikeluarkan lebih minimum. Permasalahan pendistribusian tersebut
dapat diselesaikan menggunakan pendekatan matematika, yaitu model transportasi. Metode yang
digunakan dalam penelitian ini adalah Metode RCWMCAM dan Sumathi-Sathiya dengan uji
optimalisasi menggunakan Metode Stepping Stone. Berdasarkan hasil penelitian, total biaya
pendistribusian pendistribusian air minum Mata Air Sikumbang Kampar menggunakan Metode
RCWMCAM, yaitu Rp2.536.460,00. Sedangkan biaya transportasi pendistribusian air minum
Mata Air Sikumbang Kampar menggunakan Metode Sumathi-Sathiya, yaitu Rp2.401.540,00. Jadi,
dapat diambil kesimpulan bahwa pada permasalahan ini Metode Sumathi-Sathiya memiliki total
biaya distribusi yang lebih minimum daripada Metode RCWMCAM.
Kata Kunci: Biaya Distribusi, Metode RCWMCAM, Metode Sumathi-Sathiya, Model
Transportasi
Kombinasi Metode Bilqis Chastine Erma dan Sumathi Sathiya dengan Metode Stepping Stone untuk Optimasi Masalah Transportasi
No full textTransportation problems experienced by UD. Raja Wangi in distributing Maha Dewa fragrant incense. UD. Raja Wangi incurs high transportation costs due to irregular direct distribution patterns and has not paid attention to the route to be passed. One way to solve the problem is to use transportation methods to get the optimal distribution route so that the transportation costs incurred are minimal. This study aims to solve transportation problems using the Bilqis Chastine Erma (BCE) method and the Sumathi Sathiya method with the Stepping Stone method to obtain the optimal solution. The Bilqis Chastine Erma (BCE) and the Sumathi Sathiya methods are indirect methods of solving transportation problems by obtaining an initial solution. After obtaining the initial solution, the Stepping Stone method is used to obtain the optimal solution. The results showed that the optimal solution using the Stepping Stone method based on the initial solution of the Bilqis Chastine Erma (BCE) method obtained a total transportation cost of Rp42,937.00 while the optimal solution using the Stepping Stone method based on the initial solution of the Sumathi Sathiya method obtained a total transportation cost of Rp38,727.00. In addition, the Sumathi Sathiya method gets a difference in total transportation costs of Rp11,790.00 or 23% of the total transportation costs incurred by the UD. Raja Wangi. Therefore, the Sumathi Sathiya method is the best solution for minimizing transportation costs
Challenges Met by Healthcare Professionals (Nurses) at the time of Covid-19 Pandemic
No full textArticle Type: Editorial
Title: Challenges Met by Healthcare Professionals (Nurses) at the time of Covid-19 Pandemic
Year: 2021; Volume: 1; Issue: 2; Page No: 3 – 4
Author: Sumathi Senthilvel
DOI: 10.55349/ijmsnr.20211234
Affiliation: Associate Editor, IJMSNR, Formerly Assistant Professor in Nursing, Department of Fundamental Nursing, Amrita College of Nursing. Ponekkara, Kochi, Kerala. Email ID: [email protected]
Article Summary:
Submitted : 26-October-2021
Revised : 10-November-2021
Accepted : 02-December-2021
Published : 31-December-2021Editorial Articl
Book Review: Create, Copy, Disrupt: India’s Intellectual Property Dilemmas by Prashant Reddy T. & Sumathi Chandrashekan
No full textKevin L. Smith reviews Create, Copy, Disrupt: India’s Intellectual Property Dilemmas by Prashant Reddy T. & Sumathi Chandrashekan
OPTIMALISASI BIAYA DISTRIBUSI MENGGUNAKAN METODE SUMATHI SHATIYA DAN LOWEST SUPPLY LOWEST COST (LSLC) DILANJUTKAN DENGAN MODIFIED DISTRIBUTION (MODI)
No full textOne of the main challenges for distributors is the distribution system, which affects high costs and the effectiveness of delivering products to consumers. Therefore, it is necessary to apply an appropriate transportation method to improve distribution efficiency and minimize operational costs. This study aims to assist the company in resolving distribution issues by focusing on the cost optimization strategy for the distribution of LPG 3 Kg at PT. Sinar Putra Pertam Bantul. To achieve this goal, two initial solutions in the transportation method are used, namely the Sumathi Shatiya Method and the Lowest Supply Lowest Cost (LSLC) Method. The Sumathi Shatiya Method is applied by systematically selecting the minimum cost in each row and column. Meanwhile, the LSLC method is implemented by determining the lowest distribution cost based on the lowest supply at each distribution point. Both methods aim to minimize total costs by considering the efficient use of resources. Based on the analysis results, the Sumathi Shatiya Method resulted in a distribution cost of IDR 5,908,890, while the LSLC Method resulted in IDR 5,995,550. To achieve a more optimal solution, this study also applied the Modified Distribution Method (MODI), which aims to refine the distribution process by improving the efficiency of resource allocation. Based on the distribution costs incurred by PT. Sinar Putra Pertam in October 2024, which amounted to IDR 7,027,000, the Sumathi Shatiya Method optimized with MODI has the potential to save IDR 1,118,110 (15.91%), while LSLC saves IDR 1,031,450 (14.68%). Therefore, the implementation of the Sumathi Shatiya Method followed by MODI in addressing distribution cost issues yields a more optimal result
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