A Study on Automation of Network Maintenance in Telecom Carriers for Zero-Touch Operations

2020 ◽  
Author(s):  
Aiko Oi ◽  
Ryosuke Sato ◽  
Yuichi Suto ◽  
Kosuke Sakata ◽  
Motomu Nakajima ◽  
...  
Keyword(s):  
Network Maintenance ◽  
Telecom Carriers

scholarly journals A Multiobjective Decision-Making Model for Risk-Based Maintenance Scheduling of Railway Earthworks

2021 ◽  
Vol 11 (3) ◽  
pp. 965
Author(s):  
Irina Stipanovic ◽  
Zaharah Allah Bukhsh ◽  
Cormac Reale ◽  
Kenneth Gavin
Keyword(s):  
Utility Theory ◽  
Structural Reliability ◽  
Structural Performance ◽  
Maintenance Planning ◽  
Relative Importance ◽  
User Cost ◽  
Multi Attribute Utility Theory ◽  
Network Maintenance ◽  
Decision Making Model ◽  
Do So

Aged earthworks constitute a major proportion of European rail infrastructures, the replacement and remediation of which poses a serious problem. Considering the scale of the networks involved, it is infeasible both in terms of track downtime and money to replace all of these assets. It is, therefore, imperative to develop a rational means of managing slope infrastructure to determine the best use of available resources and plan maintenance in order of criticality. To do so, it is necessary to not just consider the structural performance of the asset but also to consider the safety and security of its users, the socioeconomic impact of remediation/failure and the relative importance of the asset to the network. This paper addresses this by looking at maintenance planning on a network level using multi-attribute utility theory (MAUT). MAUT is a methodology that allows one to balance the priorities of different objectives in a harmonious fashion allowing for a holistic means of ranking assets and, subsequently, a rational means of investing in maintenance. In this situation, three different attributes are considered when examining the utility of different maintenance options, namely availability (the user cost), economy (the financial implications) and structural reliability (the structural performance and subsequent safety of the structure). The main impact of this paper is to showcase that network maintenance planning can be carried out proactively in a manner that is balanced against the needs of the organization.

scholarly journals Profile Matching Untuk Sistem Pendukung Keputusan Pemilihan Vendor Maintenance Server dan Jaringan

2018 ◽  
Vol 5 (2) ◽  
pp. 262-269
Author(s):  
Khoirun Nisa ◽  
Entin Sutinah
Keyword(s):  
Decision Support ◽  
Decision Support System ◽  
Support System ◽  
Advantages And Disadvantages ◽  
Profile Matching ◽  
Secondary Factor ◽  
Network Maintenance ◽  
Voting System ◽  
Maintenance Work ◽  
The Right

AbstrakMemilih pemasok  yang  tepat atau vendor diantara pemasok  yang  ada  adalah  isu  penting  bagi  top manajemen. Proses penentuan vendor pada PT. Gema Graha Sarana dilakukan secara manual, yang diawali dengan pengumpulan informasi melalui presentasi dari setiap calon vendor. Setelah itu dilakukan rapat pimpinan untuk membahas tentang kelebihan dan kekurangan masing-masing vendor. Rapat pimpinan perusahaan menggunakan sistem votting sehingga cara tersebut dinilai masih kurang objektif dan tidak menutup kemungkinan penilaian dilakukan secara subjektif. Saat ini sudah berkembang pesat teknologi dalam segala bidang salah satunya teknologi dalam penentuan pengambilan keputusan, oleh karena itu untuk membantu dalam pemecahan masalah tersebut perlu dilakukan sebuah  pendekatan dengan menggunakan sebuah metode sistem pendukung keputusan salah satu nya dengan menggunakan metode Profile Matching dengan tahapan yaitu menentukan kriteria, perhitungan pemetaan gap, melakukan pembobotan, perhitungan core factor dan secondary factor, perhitungan nilai total, dan perhitungan untuk menentukan perangkingan.Tujuan dari penelitian ini adalah menentukan vendor  yang cocok agar mampu menyediakan layanan jasa maintenance server dan jaringan sesuai kebutuhan. Sehingga dari tahapan-tahapan tersebut diperoleh sebuah hasil keputusan untuk memilih vendor yang akan diajak kerja sama dalam melakukan pekerjaan maintenance server dan jaringan dengan memilih PT. Nusa Network Prakarsa. Kata Kunci: Pemilihan Vendor, Profile Matching, Sistem Pendukung Keputusan. AbstractSelecting the right supplier or vendor among existing suppliers is an important issue for top management. The process of determining vendor at PT. GemaGrahaSarana, Tbk is done manually, which begins with the collection of information through the presentation of each potential vendor. After that conducted a leadership meeting to discuss the advantages and disadvantages of each vendor. Company leadership meeting using the voting system so that way is considered still less objective and did not rule out the assessment is done subjectively. Nowadays, technology has been developed in all fields, one of them is technology in determining decision making, therefore to assist in solving the problem it is necessary to do an approach by using a method of decision support system of one of them by using method matching profile with stages that is Determining Criteria , Gap Mapping Calculation, Weighting, Calculation of Core Factor and Secondary Factor, Total Value Period, and Calculation for Determining Ranking. The purpose of this research is to determine the suitable vendors to be able to provide server and network maintenance services as needed. So from these stages obtained a decision to select a vendor who will be invited to work together in doing maintenance work server and network by choosing PT. Nusa Network Prakarsa. Keywords: Vendor Selection, Profile Matching, Decision Support System.

scholarly journals Asphalt Pavement Pothole Detection and Segmentation Based on Wavelet Energy Field

2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Penghui Wang ◽  
Yongbiao Hu ◽  
Yong Dai ◽  
Mingrui Tian
Keyword(s):  
Field Model ◽  
Asphalt Pavement ◽  
Morphological Processing ◽  
Segmentation Method ◽  
Maintenance Strategies ◽  
Energy Field ◽  
Wavelet Energy ◽  
Markov Random ◽  
Network Maintenance ◽  
Pothole Detection

Potholes are one type of pavement surface distresses whose assessment is essential for developing road network maintenance strategies. Existing methods for automatic pothole detection either rely on expensive and high-maintenance equipment or could not segment the pothole accurately. In this paper, an asphalt pavement pothole detection and segmentation method based on energy field is put forward. The proposed method mainly includes two processes. Firstly, the wavelet energy field of the pavement image is constructed to detect the pothole by morphological processing and geometric criterions. Secondly, the detected pothole is segmented by Markov random field model and the pothole edge is extracted accurately. This methodology has been implemented in a MATLAB prototype, trained, and tested on 120 pavement images. The results show that it can effectively distinguish potholes from cracks, patches, greasy dirt, shadows, and manhole covers and accurately segment the pothole. For pothole detection, the method reaches an overall accuracy of 86.7%, with 83.3% precision and 87.5% recall. For pothole segmentation, the overlap degree between the extracted pothole region and the original pothole region is mostly more than 85%, which accounts for 88.6% of the total detected pavement pothole images.

scholarly journals Impacts of ditch cleaning on hydrological processes in a drained peatland forest

2008 ◽  
Vol 5 (1) ◽  
pp. 147-182 ◽  
Author(s):  
H. Koivusalo ◽  
E. Ahti ◽  
A. Laurén ◽  
T. Kokkonen ◽  
T. Karvonen ◽  
...  
Keyword(s):  
Water Balance ◽  
Water Movement ◽  
Soil Surface ◽  
Snow Accumulation ◽  
Forest Growth ◽  
Understorey Vegetation ◽  
Growing Stock ◽  
Network Maintenance ◽  
Stock Volume ◽  
Ditch Cleaning

Abstract. One fourth (5.5 Mha) of forests in Finland are growing on peatlands that have been drained to improve forest growth. Forestry operations such as cuttings and ditch network maintenance in these areas may increase export of suspended solids and nutrients, and deteriorate water quality in receiving lakes and rivers. Mitigation of the deterioration calls for understanding how forest management operations affect peatland hydrology. A process-based simulation model FEMMA was applied to quantify the effects of ditch network maintenance on peatland water balance. The model has separate computation routines for evapotranspiration in tree stand and understorey vegetation, snow accumulation and melt, water movement in unsaturated and saturated soil, and drainage. Hydraulic characteristics of peat, as well as different drainage designs can be parameterised in the model. The model was applied in artificially delineated research catchments in northern Finland, where the ditch network was maintained by cleaning and digging the ditches deeper. The simulation results indicated that ditch cleaning affected the water balance slightly and the effect was dependent on stand characteristics and soil structure. When the growing stock volume was low and poorly conductive soil extended close to the soil surface, ditch cleaning increased evapotranspiration. In stands with a high stock volume and a thick topmost layer of highly conductive soil, evapotranspiration was less affected. In the study catchments, the effect of ditch cleaning on runoff was small compared to the error between measured and modelled runoff.

scholarly journals Implementation of a 46-node quantum metropolitan area network

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Teng-Yun Chen ◽  
Xiao Jiang ◽  
Shi-Biao Tang ◽  
Lei Zhou ◽  
Xiao Yuan ◽  
...  
Keyword(s):  
Metropolitan Area ◽  
Key Management ◽  
Text Messaging ◽  
Secure Communication ◽  
Field Tests ◽  
Area Network ◽  
Quantum Network ◽  
Standard Equipment ◽  
Metropolitan Area Network ◽  
Network Maintenance

AbstractQuantum key distribution (QKD) enables secure key exchanges between two remote users. The ultimate goal of secure communication is to establish a global quantum network. The existing field tests suggest that quantum networks are feasible. To achieve a practical quantum network, we need to overcome several challenges including realizing versatile topologies for large scales, simple network maintenance, extendable configuration and robustness to node failures. To this end, we present a field operation of a quantum metropolitan-area network with 46 nodes and show that all these challenges can be overcome with cutting-edge quantum technologies. In particular, we realize different topological structures and continuously run the network for 31 months, by employing standard equipment for network maintenance with an extendable configuration. We realize QKD pairing and key management with a sophisticated key control centre. In this implementation, the final keys have been used for secure communication such as real-time voice telephone, text messaging and file transmission with one-time pad encryption, which can support 11 pairs of users to make audio calls simultaneously. Combined with intercity quantum backbone and ground–satellite links, our metropolitan implementation paves the way toward a global quantum network.

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