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Journal articles on the topic 'OPTIM –TOOL'

Author: Grafiati

Published: 11 September 2023

Last updated: 19 July 2025

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Astorino, Annabella, Massimo Di Francesco, Manlio Gaudioso, Enrico Gorgone, and Benedetto Manca. "Polyhedral separation via difference of convex (DC) programming." Soft Computing 25, no. 19 (2021): 12605–13. http://dx.doi.org/10.1007/s00500-021-05758-6.

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AbstractWe consider polyhedral separation of sets as a possible tool in supervised classification. In particular, we focus on the optimization model introduced by Astorino and Gaudioso (J Optim Theory Appl 112(2):265–293, 2002) and adopt its reformulation in difference of convex (DC) form. We tackle the problem by adapting the algorithm for DC programming known as DCA. We present the results of the implementation of DCA on a number of benchmark classification datasets.

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Heidarkhani, Shapour, and Ghasem Alizadeh Afrouzi. "SOME MULTIPLICITY RESULTS TO THE EXISTENCE OF THREE SOLUTIONS FOR A DIRICHLET BOUNDARY VALUE PROBLEM INVOLVING THE P-LAPLACIAN." Mathematical Modelling and Analysis 16, no. 3 (2011): 390–400. http://dx.doi.org/10.3846/13926292.2011.601770.

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In this paper we prove the existence of two intervals of positive real parameters λ for a Dirichlet boundary value problem involving the p-Laplacian which admit three weak solutions, whose norms are uniformly bounded with respect to λ belonging to one of the two intervals. Our main tool is a three critical points theorem due to G. Bonanno [A critical points theorem and nonlinear differential problems, J. Global Optim., 28:249–258, 2004].

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Atlihan, Ö. G., T. Yurdakadim, and E. Taş. "A new approach to the approximation by positive linear operators in weighted spaces." Ukrains’kyi Matematychnyi Zhurnal 74, no. 11 (2022): 1447–53. http://dx.doi.org/10.37863/umzh.v74i11.6427.

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UDC 517.5 In the present paper, we deal with the problem of approximating a function by positive linear operators in weighted spaces. In this case, our main tool is the P p -statistical convergence recently defined by [M. Ünver, C. Orhan, Numer. Funct. Anal. and Optim., <strong>40</strong>, 535–547 (2019)]. It is worth noting that the P p -statistical convergence and the statistical convergence do not imply each other.

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Kesti, Vili, A. Kaijalainen, A. Väisänen, et al. "Bendability and Microstructure of Direct Quenched Optim^® 960QC." Materials Science Forum 783-786 (May 2014): 818–24. http://dx.doi.org/10.4028/www.scientific.net/msf.783-786.818.

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Use of ultra-high-strength steels (UHSS) in weight critical constructions is an effective way to save energy and minimize carbon footprint in the end use. On the other hand, the demands for reducing manufacturing costs and energy consumption of the steelmaker are increasing. This has led to development of energy efficient direct quenching (DQ) steelmaking process as an alternative to the conventional quenched and tempered or thermomechanical rolling and accelerate cooled processes. Ruukki has employed thermomechanical rolling and direct quenching process (TM + DQ) for a novel type of ultra-high-strength strip and plate steels since 2001. Advantages of the ultra-high-strength level (>900MPa) can be fully utilized only if fabricated properties are on a sufficient level. Bending is one of the most important workshop processes and a good bendability is essential for a structural steel. Hence, the metallurgy and bendability of Ruukki ́s TM + DQ strip steel Optim® 960QC have been investigated closely. It was found that by optimizing process parameters and chemical composition, a good combination of strength and ductility can be achieved by a modification of martensitic-bainitic microstructure. Despite of smaller total elongation, the bendability of Optim® 960QC is at least on the same level as on conventionally manufactured 960MPa steels. However, it is important to pay special attention to bending process (tool parameters, springback, bending force, material handling) when bending UHSS. It was also found that the bendability of Optim® 960QC can be significantly enhanced by local laser heat treatments or roll forming.

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Kutuniva, Kari, Jussi A. Karjalainen, and Kari Mäntyjärvi. "Effect of Convex Sheared Punch Geometry on Cutting Force of Ultra-High-Strength Steel." Key Engineering Materials 504-506 (February 2012): 1359–64. http://dx.doi.org/10.4028/www.scientific.net/kem.504-506.1359.

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Extremely high strength of the ultra-high-strength steels leads to increased load factors on the tooling machines and punching tools. This experimental study examines how much convex punch geometry affects cutting forces when punching ultra-high-strength steels. Tools used in punching tests were four different convex sheared rooftop punches and one conventional flat end punch, to which rooftop punches were compared to. The material in punching tests was ultra-high-strength steel Ruukki Optim 960 QC, with a thickness of 4 mm. The test material in punching tests was sheared with rooftop punches and a flat end punch and occurred cutting forces were measured. The qualities of punched holes were evaluated visually and the roundness measurements were also performed. The results show that the cutting forces of Optim 960 QC can be reduced radically with optimal convex punch geometry. With using 14-degree shear angle of the punch end, the cutting forces reduced up to 57 % compared to forces of the conventional flat end tool. However, largest tested shear angles caused several negative effects on the cutting quality of the holes and therefore they are not suitable in all applications. Punching tests proved that the cutting clearance had no appreciable effect on cutting forces when punching ultra-high-strength steel. Instead there was a noticeable effect on the quality of the punched hole, especially when large shear angles were used.

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Alina, NITREAN. "CRIMINALISTICA NUCLEARĂ: INOVAȚIE ȘI COOPERARE GLOBALĂ." LEGEA ŞI VIAŢA=LAW AND LIFE=ЗАКОН И ЖИЗНЬ . 1, no. 381 (2025): 192–210. https://doi.org/10.5281/zenodo.15552931.

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Criminalistica nucleară reprezintă un domeniu inovator ce se bazează pe aplicarea tehnologiilor avansate și expertizei interdisciplinare în vederea prevenirii și combaterii infracțiunilor ce implică materiale nucleare sau radioactive. Acest domeniu este strâns legat de colaborarea internațională, care joacă un rol esențial în combaterea provocărilor ce depășesc granițele naționale. Inițiativele ITWG, GICNT și CBRN CoE, alături de organizații internaționale precum INTERPOL, IAEA și UNICRI, contribuie la consolidarea capacității statelor în domeniul criminalisticii nucleare. Suportul internațional include nu doar schimbul de informații, programe de instruire și formare, ci și sprijinul operațional la investigarea incidentelor radiologice, furnizarea de echipamente specializate necesare pentru gestionarea incidentelor radiologice.Eforturile internaționale nu doar stimulează progresul tehnologic și inovarea în domeniul criminalisticii nucleare, ci și contribuie la crearea unor rețele de experți și grupuri tehnice, care facilitează colaborarea și schimbul de cunoștințe între statele membre. În articol sunt evidențiate două modele de dezvoltare a capacității de efectuare a expertizei materialelor nucleare sau radioactive, și anume: laboratoare dedicate examinării materialelor nucleare, echipate pentru cercetarea probelor contaminate cu radionuclizi; laboratoare criminalistice tradiționale adaptate condițiilor de protecție fizică nucleară. Alegerea modelului optim trebuie să se bazeze pe analiza capacităților existente, precum și pe resursele disponibile și obiectivele strategice ale statului. În acest sens, GICNT a dezvoltat un instrument de evaluare &bdquo;Nuclear Forensics Self-Assessment Tool”, destinat verificării capacităților naționale de criminalistică nucleară, dar și identificării punctelor forte și a lacunelor în infrastructura națională.

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Laitinen, Risto O., David A. Porter, L. Pentti Karjalainen, Pasi Leiviskä, and Jukka Kömi. "Physical Simulation for Evaluating Heat-Affected Zone Toughness of High and Ultra-High Strength Steels." Materials Science Forum 762 (July 2013): 711–16. http://dx.doi.org/10.4028/www.scientific.net/msf.762.711.

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Physical simulation of the most critical sub-zones of the heat-affected zone is a useful tool for the evaluation of the toughness of welded joints in high-strength and ultra-high-strength steels. In two high-strength offshore steels with the yield strength of 500 MPa, the coarse grained, intercritical and intercritically reheated coarse grained zones were simulated using the cooling times from 800 to 500 °C (t8/5) 5 s and 30 s. Impact and CTOD tests as well as microstructural investigations were carried out in order to evaluate the weldability of the steels without the need for expensive welding tests. The test results showed that the intercritically reheated coarse grained zone with the longer cooling time t8/5=30 s was the most critical sub-zone in the HAZ due to the M-A constituents and coarse ferritic-bainitic microstructure. In 6 mm thick ultra-high-strength steel Optim 960 QC, the coarse grained and intercritically reheated coarse grained zones were simulated using the cooling times t8/5 of 5, 10, 15 and 20s and the intercritical zone using the cooling times t8/5 of 5 and 10 s in order to select the suitable heat input for welding. The impact test results from the simulated zones fulfilled the impact energy requirement of 14 J (5x10 mm specimen) at -40 °C for the cooling times, t8/5, from 5 to 15 s, which correspond to the heat input range 0.4-0.7 kJ/mm (for a 6 mm thickness).

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Kampai, Genta, and Harmadi Harmadi. "Rancang Bangun Alat Pendeteksi Kelebihan Beban Kendaraan Menggunakan Sensor Serat Optik dan Transceiver nRF24L01+." Jurnal Fisika Unand 9, no. 1 (2020): 1–8. http://dx.doi.org/10.25077/jfu.9.1.1-8.2020.

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Telah dirancang alat pendeteksi kelebihan beban kendaraan menggunakan sensor serat optik dengan metode intrinsik. Rancang bangun alat pendeteksi kelebihan beban kendaraan ini terdiri dari sumber cahaya berupa dioda laser, serat optik FD-620-10, fotodetektor OPT 101, mikrokontroler Arduino Uno sebagai pengelolah data, buzzer, dan LCD sebagai penampil hasil pengukuran. Sensor serat optik digunakan untuk mengukur beban pada kendaraan dengan memanfaatkan perubahan tegangan keluaran dari OPT101 dan di transmisikan menggunakan Transceiver nRF24L01+. Karakterisasi sensor serat optik dilakukan dengan memvariasikan bending dalam bentuk banyaknya jumlah gerigi terhadap besarnya tegangan keluaran pada sensor serat optik. Hasil yang optimum diperoleh pada jumlah 5 gerigi dengan tegangan keluran sebesar 1,121 V. Kelebihan beban kendaraan maksimum yang dideteksi oleh sensor sebesar 6400 kg dengan tegangan keluaran sebesar 0,215 V. Jarak maksimum pengiriman data oleh Transceiver nRF24L01+ adalah 450 m tanpa penghalang dan 230 m dengan penghalang. Hasil pengukuran kelebihan beban kendaraan yang diperoleh dengan alat yang dirancang dibandingkan dengan jembatan timbang diperoleh kesalahan rata-rata sebesar 9,2 %. It has been designed an overloaded vehicle detection tool using optical fibre sensor with intrinsic method. The design of the vehicle's overload detection tool consists of laser diode as a light source, an optical fiber FD-620-10, a photodetector OPT 101, an Arduino Uno microcontroller as a data processor, a buzzer, and an LCD as a measuring result viewer. The fiber optic sensor is used to measure the load on the vehicle by utilizing the output voltage changes from OPT101 and cast using the Transceiver nRF24L01. The characterization of the fibre optic sensor is performed by varying bending in the form of a large amount of cleats to the magnitude of the output voltage in the fibre optic sensor. Optimum results are obtained at the number of 5 wells with a tension voltage is 1.121 V. The overload of maximum vehicle detected by the sensor is amounted to 6400 kg and a sensor output voltage is 0.215 V. The maximum distance from the data transmission Transceiver nRF24L01 + is 450 m without barrier and 230 m with barrier. The result of overload vehicle measurements obtained with designed tool is compared detection to weighbridge were obtained an average fault of 9.2%.

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Fatwa Fauzandi and Yuliarman Saragih. "Proses Perbaikan Data ODP (Optical Distribution Point) Tidak Sama dan Rename ODP Menggunakan UIM Tools Untuk Meluruskan Service di PT. TELKOM WITEL KARAWANG." Electrician : Jurnal Rekayasa dan Teknologi Elektro 18, no. 1 (2024): 50–55. http://dx.doi.org/10.23960/elc.v18n1.2503.

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Intisari — Penelitian ini mengenai perbaikan Optical Distribution Point (ODP) tidak sama dan rename ODP menggunakan UIM Tools pada unit OPTIMA di PT. Telkom Witel Karawang menyediakan service telekomunikasi, layanan informasi, dan layanan media pendidikan dan hiburan, untuk proses perbaikan Optical Distribution Point (ODP) tidak sama ini merupakan bagaian dari layanan telekomnukasi yang ada di unit OPTIMA dan salah satu masalah yang sering terjadi adalah ketidaksamaan data pada Optical Distribution Point (ODP) yang mengganggu kelancaran pelayanan, Optical Distribution Point (ODP) merupakan tempat terpusat di mana koneksi optik dari jaringan distribusi terhubung dengan pelanggan, Hasil dari implementasi ini adalah peningkatan kualitas layanan telekomunikasi di PT. Telkom Witel Karawang. Dengan data ODP yang akurat dan terbaru, proses layanan dapat berjalan dengan lancar dan efisien, dan penerapan solusi teknologi seperti UIM Tools dapat memberikan dampak baik bagi perusahaan dalam mengatasi masalah pelayanan dan meningkatkan kepuasan pelanggan. Kata kunci — Telekomunikasi, Layanan, Perbaikan, Gangguan, Optical Distribution Point (ODP), UIM Tools.

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McClean, Andrew. "Hoya tool kit to encourage engagement with schools." Optician 265, no. 6845 (2022): 6. https://doi.org/10.12968/opti.2022.265.6845.6.

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Kaushal, Mohit, T. S. Mahant, Amit Mandal, Navreet Sandhu, Zafar Iqbal, and Rahat Brar. "Saviour tool now a foreign body." Lung India 41, no. 2 (2024): 135–38. http://dx.doi.org/10.4103/lungindia.lungindia_450_22.

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ABSTRACT Foreign bodies are commonly seen in children, here presenting a case of a male adult with an impacted thumb pin in the left lower lobe bronchus. Extraction required fiber-optic bronchoscopy, failure of which led to thoracotomy with bronchotomy.

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Harvey, Bill. "Digital tools: Dispensing with reality." Optician 2016, no. 3 (2016): 139773–1. http://dx.doi.org/10.12968/opti.2016.3.139773.

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Bill Harvey fathoms out the new Nautilus virtual reality dispensing aid from Essilor, finding it to be a pioneering, easy-to-use tool enabling patients to decide on the best lenses for their lifestyles.

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Zhang, Yuan Liang, Zhi Min Zhou, and Xu Zhang. "Compensation Control of Cutting Tool Position in Machining Non-Axisymmetric Optic Mirror Surface." Materials Science Forum 505-507 (January 2006): 181–86. http://dx.doi.org/10.4028/www.scientific.net/msf.505-507.181.

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Piezoelectric servo mechanism, with its existing nonlinear response and hysteresis, restricts the precision greatly when applied to manufacturing of non-axisymmetric optic mirror. On the basis of theory analysis and experiments, this paper builds three kinds of feed-forward model of piezoelectric servo cutting system. According to these mathematical models, we make the compensation control to the cutting tool position, which results the maximum displacement error less than 0.04μm. And based on this method, experiments on machining non-axisymmetric optic surface of wave front corrector shows the Zernike relative error is less than 10%. So the compensation control of feed-forward control model of cutting tools position can efficiently counteract the influence of nonlinear response and hysteresis, which improves machining precision of non-axisymmetric optic mirror surface.

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Kizwa, Yoshiyuki, Megumi Umeda, Takuya Shinjo, et al. "How work community-standard palliative care manuals, patient education tools, and assessment tools? : OPTIM-study." Palliative Care Research 7, no. 2 (2012): 172–84. http://dx.doi.org/10.2512/jspm.7.172.

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Donica, Vlad Constantin, Ciprian Danielescu, Anisia Iuliana Alexa, et al. "Evaluating Fundoscopy as a Screening Tool for Optic Nerve Atrophy in Multiple Sclerosis: An Optical Coherence Tomography (OCT) Comparative Study." Journal of Clinical Medicine 14, no. 7 (2025): 2166. https://doi.org/10.3390/jcm14072166.

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Background: Multiple sclerosis (MS) is a chronic, immune-mediated disorder of the central nervous system (CNS), characterized by inflammation, demyelination, and neurodegeneration, resulting in the disruption of axonal signal conduction. Optic neuritis (ON) occurs in over 70% of MS cases, highlighting the involvement of the optic nerve in the progression of the disease. Optic nerve atrophy secondary to the inflammatory episode can be observed during fundoscopy as pallor in the temporal quadrant or of the entire optic disc. Our study aims to evaluate the diagnostic capacity of fundus ophthalmoscopy when compared with the temporal thickness of the pRNFL (peripapillary retinal nerve fiber layer) measured using optical coherence tomography (OCT). Methods: We analyzed 88 eyes from 44 relapsing remitting MS patients using fundus photography (FP) and OCT optic disc measurements, correlating the temporal pallor of the optic disc seen in fundus photographs (FPs) with structural parameters obtained using OCT. Results: Our analysis revealed the significant capacity of optic disc pallor grading using FPs in MS patients in order to discriminate between normal and quadrants with pallor (p = 0.006) or strong pallor (p = 0.003) and between ones with light pallor and moderate pallor (p = 0.002) or strong pallor (p = 0.001), while being unable to clearly differentiate between normal quadrants and ones with light pallor (p = 0.608) or between pallor and strong pallor (p = 0.33). Conclusions: Fundoscopy and FP are useful screening tools in evaluating optic nerve atrophy in MS patients that could be used to assess neurodegeneration because of their universal availability. With the proposed inclusion of the optic disc as the fifth part of the CNS, the optic nerve will benefit from multiple exploratory techniques in order to increase the understanding of disease progression and patient quality of life.

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Goscé, Lara, Gerard J. Abou Jaoude, David J. Kedziora, et al. "Optima TB: A tool to help optimally allocate tuberculosis spending." PLOS Computational Biology 17, no. 9 (2021): e1009255. http://dx.doi.org/10.1371/journal.pcbi.1009255.

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Approximately 85% of tuberculosis (TB) related deaths occur in low- and middle-income countries where health resources are scarce. Effective priority setting is required to maximise the impact of limited budgets. The Optima TB tool has been developed to support analytical capacity and inform evidence-based priority setting processes for TB health benefits package design. This paper outlines the Optima TB framework and how it was applied in Belarus, an upper-middle income country in Eastern Europe with a relatively high burden of TB. Optima TB is a population-based disease transmission model, with programmatic cost functions and an optimisation algorithm. Modelled populations include age-differentiated general populations and higher-risk populations such as people living with HIV. Populations and prospective interventions are defined in consultation with local stakeholders. In partnership with the latter, demographic, epidemiological, programmatic, as well as cost and spending data for these populations and interventions are then collated. An optimisation analysis of TB spending was conducted in Belarus, using program objectives and constraints defined in collaboration with local stakeholders, which included experts, decision makers, funders and organisations involved in service delivery, support and technical assistance. These analyses show that it is possible to improve health impact by redistributing current TB spending in Belarus. Specifically, shifting funding from inpatient- to outpatient-focused care models, and from mass screening to active case finding strategies, could reduce TB prevalence and mortality by up to 45% and 50%, respectively, by 2035. In addition, an optimised allocation of TB spending could lead to a reduction in drug-resistant TB infections by 40% over this period. This would support progress towards national TB targets without additional financial resources. The case study in Belarus demonstrates how reallocations of spending across existing and new interventions could have a substantial impact on TB outcomes. This highlights the potential for Optima TB and similar modelling tools to support evidence-based priority setting.

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Harvey, Bill. "App round up: Tools to help your practice." Optician 2018, no. 2 (2018): 169122–1. http://dx.doi.org/10.12968/opti.2018.2.169122.

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Raizada, Seemant, Jamal Al Kandari, and Khalid Al Sabti. "Ophthalmic endoscope: A novel diagnostic imaging tool." International Journal of Diagnostic Imaging 4, no. 2 (2017): 9. http://dx.doi.org/10.5430/ijdi.v4n2p9.

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The purpose of the study was to evaluate the feasibility of ophthalmic endoscope as a diagnostic tool. This was a prospective, non-comparative, interventional clinical study of 11 consecutive patients who underwent endoscopy-assisted management for ocular pathologies. We used a fused fiber-optic type of endoscope to visualize areas of the eye which were not seen clearly, due to media opacity, through conventional viewing systems like indirect ophthalmoscopy or wide angle viewing system. Eleven cases were enrolled in the study. Five patients underwent endoscopic examination of the fundus prior to penetrating keratoplasty (PKP) or keratoprosthesis. In one out of these 5 cases, PKP was differed due to pale optic nerve. Patient number 6, 7 & 8 were cases of recurrent vitreous hemorrhage. In these patients, endoscope was used to inspect the sclerotomy from inside and to remove incarcerated vitreous and fibro-vascular membrane. Patient number 9 was a case of poorly dilating pupil undergoing cataract surgery. Endoscope was used in this patient to locate the exact position of haptics of PCIOL. In cases 10 and 11, endoscope was used to localize ciliary sulcus and to document the position of haptics of sclera fixated IOL. Conclusion: The ophthalmic endoscope provides valuable information by illuminating, video recording, and by providing clear view of areas not visible by conventional viewing systems. It can help in management strategies in selected cases.

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Levit, Alex. "The Volk Eye Check in practice." Optician 2016, no. 1 (2016): 139506–1. http://dx.doi.org/10.12968/opti.2016.1.139506.

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Carolan, T. A., S. R. Kidd, D. P. Hand, et al. "Acoustic emission monitoring of tool wear during the face milling of steels and aluminium alloys using a fibre optic sensor. Part 2: Frequency analysis." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 211, no. 4 (1997): 311–19. http://dx.doi.org/10.1243/0954405971516284.

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This paper describes the application of acoustic emission (AE) frequency analysis to cutting tool wear monitoring in finish milling operations. AE detection was achieved using a fibre optic interferometer which, unlike conventional piezoelectric transducers, allows absolute measurements of the frequency content of the signals, generated during face milling of various steels and aluminium alloys, to be made. A model detailing the expected variations in AE mean frequency with various forms of tool wear in the different processes is presented and is validated by the practical set of tool wear tests using the fibre optic interferometer.

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Clarkson, Douglas. "Proton Radiotherapy in Ophthalmology." Optician 268, no. 6915 (2023): 17–21. http://dx.doi.org/10.12968/opti.2023.268.6915.17.

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Clarkson, Douglas. "The Diamond Light Source." Optician 269, no. 6936 (2024): 22–25. http://dx.doi.org/10.12968/opti.2024.269.6936.22.

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Harvey, Bill. "Myopia PreMonition." Optician 2021, no. 12 (2021): 243066–1. http://dx.doi.org/10.12968/opti.2021.12.243066.

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Tang, Xin Rui, Miki Yoshinaga, Keiichi Nakamoto, Tohru Ishida, and Yoshimi Takeuchi. "Ultraprecision Microgrooving of Hard Material by Means of Cutting Point Swivel Machining." Key Engineering Materials 447-448 (September 2010): 36–40. http://dx.doi.org/10.4028/www.scientific.net/kem.447-448.36.

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Recently, in accordance with the technical development and miniaturization of the information equipments, the demand of optic elements with high precision and miniaturization is increased. The die is used for manufacturing the optic elements. Thus, it is needed to machine the die with high efficiency and high precision. As the material of die, hard material including cemented carbide and ceramics is used. However, when hard material is machined, there is a problem that severe tool wear occurs, and worn tool shape is transferred into the surface so that precision machining cannot be realized. In this study, a method, called cutting point swivel machining, is proposed to suppress tool wear by using the tool with special chamfer and all parts of tool tip. The effect of tool wear suppression is verified by the machining of SiC. Then, the relation between the suppression of tool wear and tool rotation period is verified.

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Gücüyener, İsmet, and Erdal Emel. "A Fiber-Optic Bending Sensor for the Vibration Monitoring of CNC Face-Milling Machine." Solid State Phenomena 147-149 (January 2009): 627–32. http://dx.doi.org/10.4028/www.scientific.net/ssp.147-149.627.

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Vibration measurement of CNC milling is one of the used techniques for prediction of tool wear. Monitoring of tool wear is very important since a worn tool will affect machine and workpiece either. We developed a fiber-optic sensor for spindle vibration of CNC face-milling machine. The sensor is based on monitoring loss of light from the fiber core. For this sensor a laser light transmitter circuit, a sense plane construction, and a light receiver circuit are designed. Designed fiber-optic sensor is tested on Taksan TMC 650V face-milling machine. Obtained signals from this sensor is investigated in time domain and frequency domain and showed that it is valuable to tool ware monitoring.

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., Widodo, and Nur Hidayat. "Design And Development Of Automatic Fiber Optic Cable Roller Using Nodemcu Esp 8266 Module." BEST : Journal of Applied Electrical, Science, & Technology 4, no. 1 (2022): 27–32. http://dx.doi.org/10.36456/best.vol4.no1.5442.

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ABSTRACT The process of winding fiber optic cable rolls takes a long time because it is done manually or conventionally. One of the tools in winding is a FO cable roller. This tool is designed to be able to roll fiber optic cables, but the limitations of this tool are still done manually, FO cables are rolled by hand like pedaling a bicycle on the pedals, the speed is set based on the speed of the rotation of the hand and it all depends on the human factor. Therefore, there is a need for an Automatic Fiber Optic Cable Winder Using NodeMCU ESP8266 and using Iot (Web of Things) to be more efficient and better in cable winding expositions.

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Harvey, Bill. "Apps round-up: Clinical tools are put to the test." Optician 2016, no. 1 (2016): 139508–1. http://dx.doi.org/10.12968/opti.2016.1.139508.

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Qoryah, Rika Dwi Hidayatul, Allen Luviandy, and Mahros Darsin. "Study on Tool Deterioration in Machining with Minimum Quantity Lubrication (MQL) Condition." TEKNIK 41, no. 3 (2020): 261–68. http://dx.doi.org/10.14710/teknik.v41i3.27348.

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This study aims to observe the tool deterioration following application of minimum quantity lubrication method (MQL). The designed MQL system is completed with an Arduino controller system which was able to be either manually-controlled or automatically-controlled. The tool used in this study is DCMT 11 insert type. The Taguchi method using the Orthogonal Array L9 design was used to compile the design of experiments with variations in depth of cut, coolant composition, and cooling fluid application methods. Each variable consists of three levels. Tool deterioration evaluated by observing it under an optic microscope from three sides of the tool. There are four levels of tool deterioration. The value of tool deterioration of each tool is the accumulation of each side view. ANOVA analysis found that depth of cut, cutting tool composition and method of applying coolant influence tool deterioration in percentage by 32.69%, 17.30 % and 12.82% respectively. Moreover, the minimum tool deterioration would be achieved when using the parameter combination of depth of cut of 1.6 mm; mixture composition of 3:7; and using the temperature-controlled MQL.

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Zhou, Fengfeng, Xingyu Fu, Siying Chen, Eunseob Kim, and Martin B. G. Jun. "Fiber Optic Sensor for Smart Manufacturing." International Journal of Precision Engineering and Manufacturing-Smart Technology 1, no. 2 (2023): 125–36. http://dx.doi.org/10.57062/ijpem-st.2023.0024.

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In this research we introduce the application of an optical fiber Fabry-Pérot interferometer in smart manufacturing. We used an optical fiber Fabry-Pérot interferometer to measure the distance between a moving target and a fixed optical fiber. When the target moves, the distance between the fiber and the target can be precisely determined. First, we monitored the distance between a fixed fiber and the surface of a rotating tool. By measuring the distance, we reconstructed the three-dimensional (3D) profile of the tool. We also introduce the method to calculate the runout and tool wear. To further improve the speed of this method, we developed machine learning models to find out the distance from the spectrum of the interferometer since the spectrum analyzing method is relatively slow. It was found that the Deep Neural Network model predicts the distance between the fiber and the target surface with a sufficient precision (< 4 μm) when measuring the straightness error of a computer numerical control (CNC) machine tool. The proposed method provides possibilities for noncontact precise monitoring especially in a limited space.

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GÖKER, Yasin Şakir, Hasan KIZILTOPRAK, Esat YETKİN, and Kemal TEKİN. "FAZ Assesment Tool Findings in Patients with Non-proliferative Diabetic Retinopathy Via Optic Coherence Tomography Angiography." Turkiye Klinikleri Journal of Ophthalmology 28, no. 1 (2019): 43–51. http://dx.doi.org/10.5336/ophthal.2018-61137.

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Kal, Magdalena, Michał Brzdęk, Justyna Tracz, Paweł Szadkowski, and Dorota Zarębska-Michaluk. "Swept-Source Optical Coherence Tomography in the Diagnosis and Monitoring of Optic Nerve Neuropathy in Patients with Wernicke’s Encephalopathy Due to Hyperemesis Gravidarum." Journal of Clinical Medicine 14, no. 11 (2025): 3849. https://doi.org/10.3390/jcm14113849.

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Objectives: This review explores the role of swept-source optical coherence tomography (OCT) in diagnosing and monitoring optic nerve neuropathy in Wernicke’s encephalopathy (WE) due to hyperemesis gravidarum, including a case of neuropathy from intractable vomiting in pregnancy. Methods: A literature search was conducted in the PubMed database to select high-quality reviews and original articles on the use of swept-source OCT for assessing optic nerve involvement in WE due to hyperemesis gravidarum. Results: WE is a potentially fatal neuropsychiatric syndrome caused by thiamine deficiency due to various causes, like alcoholism, malnutrition, and prolonged parenteral nutrition. This condition can cause neurological disorders such as imbalance, altered mental status, nystagmus, and ophthalmoplegia. Sometimes, there is also a deterioration of visual acuity with swelling of the optic disc. OCT is a non-invasive imaging tool that can detect optic nerve involvement in WE by assessing peripapillary retinal nerve fiber layer (pRNFL) thickness. In the acute phase, optic disc edema and increased pRNFL thickness may be observed, while chronic-phase changes include optic nerve atrophy and pRNFL thinning. WE may occur in the course of hyperemesis gravidarum in pregnant women. We present a case of a 23-year-old woman at 14 weeks of gestation with WE due to severe hyperemesis gravidarum, manifesting as visual impairment and neurological deficits. MRI confirmed the diagnosis, while OCT revealed transient pRNFL thickening followed by optic nerve atrophy. Conclusions: Early diagnosis and thiamine supplementation are crucial to preventing severe complications. OCT is a valuable tool for detecting and tracking optic nerve changes in WE.

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Klimant, Ingo, Volker Meyer, and Michael Kühl. "Fiber-optic oxygen microsensors, a new tool in aquatic biology." Limnology and Oceanography 40, no. 6 (1995): 1159–65. http://dx.doi.org/10.4319/lo.1995.40.6.1159.

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Bello, Adebimpe Olamide, Ayodele Olugbenga Ogunsemoyin, Joseph Irewole Fatukasi, et al. "Comparative Analysis of Optic Nerve Diameter Using Ultrasonography Between Normotensives and Preeclamptic Patients at University of Medical Sciences Teaching Hospital, Ondo, Nigeria." European Journal of Medical and Health Sciences 5, no. 4 (2023): 85–88. http://dx.doi.org/10.24018/ejmed.2023.5.4.1829.

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Background: It is an established fact that obstetric patients withpreeclampsia do have increased optic nerve diameter compared with normotensive patients. Ultrasonography is increasingly advocated as a valuable screening tool for evaluating the optic nerve diameter as a surrogate marker for raised intracranial pressure due to its noninvasive nature, low cost, portability, dynamic real-time assessment and rapid performance. Thisstudy aims to compare the ultrasonographic measurement of optic nerve diameter between two groups of preeclamptic and normotensive pregnant women. Methodology: This cross-sectional descriptive study was carried out at the Department of Radiology, University of Medical Sciences Teaching Hospital Complex, (UNIMEDTHC), Ondo State, Nigeria. It consisted of 90 preeclamptic (study) and 90 normotensives (control) aged-matched pregnant women. The optic nerve diameters were measured by the radiologistusing a high frequency linear ultrasound probe (7.5–12 MHz).Results: The optic nerve diameter as measured by ocular ultrasound scan was statistically significantly higher (p-value of <0.05) in preeclamptic patients compared to normotensives with a mean of 6.22 ± 0.83 mm versus 4.50 ± 0.69 mm, respectively. Conclusion: Ocular ultrasound scan for measurement of optic nerve diameter is a reliable screening tool for assessing raised intracranial pressure in preeclamptic patients when compared to normotensive ones. Therefore, it is recommended that performing non-invasive ocular ultrasound scans be advocated for all pregnant women with or at risk of preeclampsia.

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Tang, Xin Rui, Keiichi Nakamoto, Kazushi Obata, and Yoshimi Takeuchi. "The Effect of Cutting Point Swivel Machining by Using Round Tool with Special Chamfer." Key Engineering Materials 523-524 (November 2012): 119–24. http://dx.doi.org/10.4028/www.scientific.net/kem.523-524.119.

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Recently, in accordance with the technical development and miniaturization of the information equipments, the demand of optic elements with high precision and miniaturization is increased. The mold is used in the manufacture of the optic elements. Thus, it is needed to machine the mold with high efficiency and high precision. As the material of mold, hard material including cemented carbide and ceramics is used. However, it is a problem of the occurrence of severe tool wear when hard material is machined. To solve this problem, the cutting point swivel machining by using the diamond tool with special chamfer was proposed, which has the ability to suppress tool wear and to realize ultraprecise machining. It is confirmed that the cutting point swivel machining has the ability to suppress tool wear by the microgrooving experiment of SiC. This study aims at investigating the effect of the cutting point swivel machining, and making clear the relationship between tool rotation speed and tool wear. As a result, it is known that the actual cutting direction can be changed by using the cutting point swivel machining, and that the chipping of tool becomes conspicuous with increasing tool rotation speed.

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Zawadzka, Izabela, and Joanna Konopińska. "From the past to the present, optical coherence tomography in glaucoma: a practical guide to a common disease." F1000Research 12 (September 22, 2023): 1186. http://dx.doi.org/10.12688/f1000research.139975.1.

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Glaucoma comprises a group of disorders of the optic nerve that cause degenerative optic neuropathy, characterised by failure of neuroretinal rim tissue in the optic nerve head, retinal nerve fibre layer, and retinal ganglion cells. Glaucoma imposes a serious epidemiological threat, with an steady increase in the global number of cases. In the current ophthalmological practice, glaucoma is diagnosed via a series of examinations, including routine funduscopic examination, ocular tonometry, gonioscopy, measurement of the visual field, and assessment using the optical coherence tomography (OCT) technique. Nowadays, the OCT technique helps in systematising the diagnostic pathway and is a basic diagnostic tool for detection of early glaucomatous eye changes. It is also vital in assessing progression and monitoring treatment results of patients. The aim of this review was to present the OCT technique as a main tool in diagnosing and monitoring glaucoma.

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Zawadzka, Izabela, and Joanna Konopińska. "From the past to the present, optical coherence tomography in glaucoma: a practical guide to a common disease." F1000Research 12 (February 19, 2024): 1186. http://dx.doi.org/10.12688/f1000research.139975.2.

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Carolan, T. A., S. R. Kidd, D. P. Hand, et al. "Acoustic emission monitoring of tool wear during the face milling of steels and aluminium alloys using a fibre optic sensor. Part 1: Energy analysis." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 211, no. 4 (1997): 299–309. http://dx.doi.org/10.1243/0954405971516275.

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An investigation of the relationship between tool wear and the energy of acoustic emission (AE) produced during various face milling finishing operations is presented. A model detailing how the AE energy, quantified by the r.m.s. value, varies depending on the material and the detailed tool geometry formed by flank and crater wear is described. Validation of the model was achieved in a series of practical machining tests covering a range of materials and tool types which resulted in various different wear forms. In all these wear tests a non-contact fibre optic interferometer was employed for AE detection directly from the workpiece. This sensor makes absolute, calibrated measurements of AE, unlike conventional contacting piezoelectric AE transducers, which may suffer uncertainties due to their frequency response and variations in transmission path. The fibre optic instrument is thus advantageous for studying variations of AE energy with tool wear.

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Abdul Malik Hayat, Muhammad Imran Khan, Saman Chaudhary, Verda Ashraf, Asma Ashraf, and Mehwish Nizam. "MRI Findings in Leber’s Hereditary Optic Neuropathy: A case report." International Journal of Multidisciplinary Research Updates 6, no. 2 (2023): 059–62. http://dx.doi.org/10.53430/ijmru.2023.6.2.0073.

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Background: Leber’s hereditary optic neuropathy (LHON) is a rare genetic condition which is mainly presented with painless, sub-acute central unilateral vision loss followed by contralateral vision loss after few weeks to months. Young adults are typically affected with men preponderance. Relatively, it is a common cause of blindness as a result of mutation in mitochondrial DNA (mtDNA). Case report: We reported the case of two brothers, who had recent history of vision loss. Fundoscopy examination revealed bilateral optic nerve atrophy along with vessel narrowing and absent macular reflex. We performed MRI bilateral orbits with contrast which revealed abnormal signals and atrophy of the optic nerves suggesting optic neuritis. Conclusion: Whenever young males develop bilateral sequential vision loss with a positive family history, the diagnosis of Leber’s hereditary optic neuropathy should be suspected. Ophthalmological examination may reveal signs suggestive of Leber’s hereditary optic neuropathy. MRI may demonstrate edema signals in both optic nerve along with thinning of nerve fibers suggesting nerve atrophy. MRI is considered an useful tool to show optic nerve abnormality and optic neuritis.

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Gupta, Sukriti, Prabhpreet Sethi, RamKrishan Duvesh, Harinder Singh Sethi, Mayuresh Naik, and Harminder K. Rai. "Optic perineuritis." BMJ Open Ophthalmology 6, no. 1 (2021): e000745. http://dx.doi.org/10.1136/bmjophth-2021-000745.

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Optic perineuritis (OPN) is a rare inflammatory disorder in which the inflammation is confined to optic nerve sheath. It can be idiopathic or secondary to underlying systemic autoimmune disorder. It usually presents with unilateral progressive diminution of vision with pain on eye movements and optic disc oedema. Hence, clinically OPN mimics optic neuritis resulting in delayed diagnosis and suboptimal treatment. In contrast to optic neuritis, patients with OPN are usually of older age group and more likely show sparing of central vision. MRI is an important tool for diagnosis of OPN apart from optic nerve sheath biopsy. Perineural enhancement on MRI is diagnostic of OPN. Oral corticosteroid therapy gives dramatic and rapid improvement in signs and symptoms. Rapid tapering of steroids increases the risk of relapse. Overall, prognosis of OPN is generally good if adequate treatment is given timely.

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Willemse, Joy, Frank Verbraak, and Johannes de Boer. "Polarization-sensitive optical coherence tomography as a tool to visualize the fiber direction of retinal nerves and peripapillary sclera." EPJ Web of Conferences 238 (2020): 04003. http://dx.doi.org/10.1051/epjconf/202023804003.

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Polarization sensitive optical coherence tomography (PS-OCT) has been used to visualize the orientation of the nerves in the retinal nerve fiber layer (RNFL) and to visualize the orientation of the collagen fibers in peripapillary sclera in retinas of healthy volunteers. Optic axis orientation images clearly visualize the nerve fibers leaving the optic nerve head (ONH) in all radial directions. Sclera orientation images show that the sclera consist of two layers, an inner layer with an orientation parallel to the RNFL orientation, and a deeper layer where the collagen is circularly oriented.

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Gomes, Phillipe. "Simulated Annealing with Gaussian Probability Density Function for Transmission Expansion Planning." U.Porto Journal of Engineering 1, no. 1 (2017): 104–13. http://dx.doi.org/10.24840/2183-6493_001.001_0010.

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Simulated Annealing (SA) is a powerful tool for optimization problems that have several local optima. This tool has the ability to escape from a local optima accepting relatively bad solutions for a period and searching for good solutions in your neighborhood. This paper describes the use of SA based on Gaussian Probability Density Function as a decision support criteria in resolution of Transmission Expansion Planning (TEP) problem. This method consists in starting from an initial solution with all possible circuits added and over the iterations removing, replacing or adding new circuits. The method proved to be a reasonable computational effort and proved able to find optimal values known in the literature.

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Shehadeh, Madeleine Taiseer, and Mohammed Jamil Al-Qaralleh. "Development of a GIS Tool to Find Fiber Cable Fault Using Python Scripting for ArcGIS in Amman City." Jordan Journal of Social Sciences 17, no. 2 (2024): 208–38. http://dx.doi.org/10.35516/jjss.v17i2.1297.

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Optical fiber cables are characterized by a larger bandwidth than other transmission media, which increases the amount of data transmitted per unit of time. Managing a fiber optic network using Geographic Information Systems (GIS) has benefits for the operation and maintenance of the communication network. The study aims to develop a GIS tool to detect fiber optic cable faults using Python Scripting for ArcGIS in the city of Amman. To achieve this goal, the Esri data model for telecommunications was used. The study concluded that it is possible to locate faults using the Python programming language, and the program provides accurate coordinates based on the precision of the OTDR device.

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Hehr, Adam, Mark Norfolk, Dan Kominsky, Andrew Boulanger, Matthew Davis, and Paul Boulware. "Smart Build-Plate for Metal Additive Manufacturing Processes." Sensors 20, no. 2 (2020): 360. http://dx.doi.org/10.3390/s20020360.

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This paper discusses the development, processing steps, and evaluation of a smart build-plate or baseplate tool for metal additive manufacturing technologies. This tool uses an embedded high-definition fiber optic sensing fiber to measure strain states from temperature and residual stress within the build-plate for monitoring purposes. Monitoring entails quality tracking for consistency along with identifying defect formation and growth, i.e., delamination or crack events near the build-plate surface. An aluminum alloy 6061 build-plate was manufactured using ultrasonic additive manufacturing due to the process’ low formation temperature and capability of embedding fiber optic sensing fiber without damage. Laser-powder bed fusion (L-PBF) was then used to print problematic geometries onto the build-plate using AlSi10Mg for evaluation purposes. The tool identified heat generation, delamination onset, and delamination growth of the printed L-PBF parts.

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Johnson, M. A. M., M. H. Kit, Y. Hoon, S. C. Y. Koay, and G. A. Mahdiraji. "Design and Simulation of Fiber Optic Cable using SolidWorks for Landslide Monitoring." Journal of Physics: Conference Series 2120, no. 1 (2021): 012038. http://dx.doi.org/10.1088/1742-6596/2120/1/012038.

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Abstract This paper presents fiber optic cable design and simulation using SolidWorks software. SolidWorks software is an effective tool that helps design, analyze, and give a better understanding of fiber optic cable capabilities and performances. The model of the fiber optic cable was developed based on the existing fiber optic drop cable. It is composed of mainly four parts: Fiber optic member, fiber-reinforced plastic (FRP) strength member, low smoke zero halogen (LSZH) jacket, and steel wire. A static study was performed to determine the designed model’s ability to endure various levels of pressing and pulling forces. Simulation results showed that the cable can withstand a maximum of 195 N pulling force and 30000 N pressing force with a displacement of 1.78e+02 mm and 4.94e-01 mm respectively. The findings will contribute to the design of a new or novel fiber optic cable that is capable to monitor landslide activities with higher durability in future studies.

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Meiburger, Kristen M., Andrea Naldi, Nicola Michielli, et al. "Automatic Optic Nerve Measurement: A New Tool to Standardize Optic Nerve Assessment in Ultrasound B-Mode Images." Ultrasound in Medicine & Biology 46, no. 6 (2020): 1533–44. http://dx.doi.org/10.1016/j.ultrasmedbio.2020.01.034.

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Poonia, Kavita, Rajeev Tuli, Gaurav Sharma, and Amit Bhardwaj. "To study visual evoked potential in patients with optic nerve diseases." Journal of Clinical Ophthalmology and Research 12, no. 2 (2024): 105–9. http://dx.doi.org/10.4103/jcor.jcor_58_22.

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Background: To study Visual Evoked Potential in patients with Optic Nerve diseases. Study design and settings: Cross – Sectional study. Material and Methods: 72 patients were included in our study, aged 12 years and above, diagnosed as optic nerve diseases like optic neuritis, Nonarteritc ischemic optic neuropathy (NAION), hereditary, nutritional and compressive optic neuropathy etc. Flash and Pattern VEPs were used. VEP amplitude and latency were noted. Results: Out of total 144 eyes, 107 eyes were affected. Ethambutol induced Toxic optic neuropathy was the most common etiology, followed by secondary optic neuropathy, idiopathic, traumatic optic neuropathy, optic neuritis, NAION, compressive and post CRAO (Central Retinal Artery Occlusion) optic neuropathy. Mean latency of all affected eyes was 132±22.5 msec. mean amplitude of the all affected eyes was 6.36±2.1 microvolt. Latency was moderately delayed (110-140 msec) in 45.8%, while severely delayed (>140 msec) in 40.3% of total eyes. Amplitude was reduced in 36.5% of total eyes. Prolonged latency with normal amplitude was found in most of the eyes with optic neuritis while latency was also prolonged in fellow eyes of optic neuritis. In case of NAION prolonged latency and reduced amplitude was found in all eyes. Conclusion: Flash or pattern VEP can be used as an important tool for diagnosis of optic neuropathies or revealing of recurrence of disease and for follow up. VEP can also be used to detect subclinical damage in the fellow eyes of optic neuritis and also useful in differentiating the optic neuritis from ischemic optic neuropathy.

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Elsonbaty, Amira, Doaa M. Mahmoud, Sara Alattar, Ahmed Hosny Shaaban, and Abdallah El-Sayed Allam. "Ultrasonographic assessment of optic nerve: does it help in lupus-induced optic neuropathy?" Lupus Science & Medicine 12, no. 1 (2025): e001358. https://doi.org/10.1136/lupus-2024-001358.

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ObjectiveEvaluating the potential role of neuromuscular ultrasonography (NMUS) in assessing optic nerve affection in patients with systemic lupus erythematosus (SLE), compared with healthy controls and other conventional strategies in diagnosing optic neuropathy.MethodsWe conducted an observational cross-sectional study comparing patients with SLE and a healthy group. We measured the optic nerve diameter (OND) and optic nerve sheath diameter (ONSD) and calculated the OND/ONSD ratio and side-to-side difference. An ophthalmologist examined all lupus patients and visual evoked potential (VEP) was performed to help evaluate the rule of NMUS in lupus-induced optic neuropathy.ResultsIn this study, we include 140 subjects, 65 lupus patients and 75 controls. Significant enlargement was present among lupus patients OND and ONSD (p= 0.017, 0.004, respectively) in comparison to controls; ultrasonographic evaluation had a high specificity when compared to ophthalmological evaluation and VEP reaching 89.6% and 88.1%, respectively, but with very low sensitivity.ConclusionUltrasonographic evaluation of the optic nerve may add significant value to the diagnosis of optic neuropathy in patients with SLE and should be considered a complementary tool to other conventional methods.

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Kwon, Young Nam, and Sang Beom Kim. "Transocular Ultrasonography in Central Nervous System (CNS) Demyelinating Disease: A Narrative Review of the Clinical Utility in Optic Neuritis and CNS Demyelinating Disease." Journal of Multiple Sclerosis and Neuroimmunology 14, no. 2 (2023): 80–86. http://dx.doi.org/10.59578/jmsni.14.2.80.

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Optic neuritis, characterized by acute or subacute vision abnormalities, is an autoimmune central nervous system (CNS) disorder that requires differentiation from other conditions with similar symptoms. Transocular ultrasonography has emerged as an effective tool for assessment of the optic nerve, aiding in both differential diagnosis and prognosis prediction. Moreover, its utility has extended to the evaluation of demyelinating diseases in the central nervous system, such as multiple sclerosis. This narrative review aims to explore studies using transocular ultrasonography in optic neuritis and CNS demyelinating diseases, highlighting their clinical significance and identifying potential avenues for future research.

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Ravisankar, K., K. Kesavan, S. Parivallal, B. Arun Sundaram, and A. K. Farvaze Ahmed. "Fibre optic sensors as a non-destructive tool for structural monitoring." International Journal of Forensic Engineering 1, no. 3/4 (2013): 260. http://dx.doi.org/10.1504/ijfe.2013.053571.

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