Plastic Optical Fiber Applications

2011 ◽  
pp. 829-835
Author(s):  
Spiros Louvros ◽  
Athanassios C. Iossifides ◽  
Dimitrios Karaboulas ◽  
Stavros A. Kotsopoulos
Keyword(s):  
Optical Fiber ◽  
Glass Fibers ◽  
Plastic Optical Fiber ◽  
Long Distance ◽  
Tree Structures ◽  
Star Networks ◽  
Set Up ◽  
Almost All ◽  
Optical Fiber Applications

Nowadays cabling based on symmetrical copper cables is dominant in almost all telecom applications; glass fibers predominate in long-distance networks. Whereas just a few years ago l0-Mbit/s Ethernet (l0BaseT) had the main share of interfaces in star or tree structures, today’s pure star networks are predominantly set up on the basis of 100-Mbit/s connections.

Colonization of depopulated crinoids by symbionts: who comes from the bottom and who from the water column?

2015 ◽  
Vol 95 (8) ◽  
pp. 1607-1612 ◽  
Author(s):  
E.S. Mekhova ◽  
P.Y. Dgebuadze ◽  
V.N. Mikheev ◽  
T.A. Britayev
Keyword(s):  
Water Column ◽  
Field Experiments ◽  
Dispersal Ability ◽  
Long Distance ◽  
Sandy Substrate ◽  
Limited Dispersal ◽  
Set Up ◽  
Almost All ◽  
High Degree

Previous experiments with the comatulid Himerometra robustipinna (Carpenter, 1881) demonstrated intensive host-to-host migration processes for almost all symbiotic species both within host aggregations and among hosts separated by several metres. The aim of this study was to check the ability of symbionts to complete long-distance migrations, by means of two in situ experiments which depopulated the crinoid host. Two different sets of field experiments were set up: exposure of depopulated crinoids (set 1) on stony ‘islands’ isolated from native crinoid assemblages by sandy substrate, and (set 2) in cages suspended in the water column. Hosts from set 1 were exposed for 1, 2, 3 and 4 weeks to assess whether substrate has an influence on the symbionts' long-distance migrations. In set 2 cages were exposed for 10–11 days, aiming to check whether symbionts were able to disperse through the water column with currents. These experiments allow the conclusion that post-settled symbionts can actively migrate among their hosts. Symbionts are able to reach their hosts by employing two different ‘transport corridors’, by drifting or swimming in water column, and by moving on the bottom. Comparison of experimental results allows the division of symbionts into two conventional groups according to the dispersal ability of their post-settled stages: (1) species able to complete long-distance migrations, (2) species unable to migrate or having limited dispersal ability. The finding of the free-living shrimp Periclimenes diversipes Kemp, 1922 in set 2 raises the question about the factors that affect such a high degree of specialization of crinoid assemblages.

High Performances of 650 nm Resonant Cavity Light Emitting Diodes for Plastic Optical Fiber Applications

2006 ◽  
Author(s):  
Yea-Chen Lee ◽  
Chia-En Lee ◽  
Shu-Woei Chiou ◽  
Hao-Chung Kuo ◽  
Tien Chang Lu ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Light Emitting Diodes ◽  
Resonant Cavity ◽  
Plastic Optical Fiber ◽  
Light Emitting ◽  
Optical Fiber Applications

scholarly journals Parsing with Traces: An O(n4) Algorithm and a Structural Representation

2017 ◽  
Vol 5 ◽  
pp. 441-454 ◽  
Author(s):  
Jonathan K. Kummerfeld ◽  
Dan Klein
Keyword(s):  
Phrase Structure ◽  
Dynamic Program ◽  
Proof Of Concept ◽  
Structural Representation ◽  
Long Distance ◽  
Tree Structures ◽  
Graph Structures ◽  
Efficient Learning ◽  
Almost All

General treebank analyses are graph structured, but parsers are typically restricted to tree structures for efficiency and modeling reasons. We propose a new representation and algorithm for a class of graph structures that is flexible enough to cover almost all treebank structures, while still admitting efficient learning and inference. In particular, we consider directed, acyclic, one-endpoint-crossing graph structures, which cover most long-distance dislocation, shared argumentation, and similar tree-violating linguistic phenomena. We describe how to convert phrase structure parses, including traces, to our new representation in a reversible manner. Our dynamic program uniquely decomposes structures, is sound and complete, and covers 97.3% of the Penn English Treebank. We also implement a proof-of-concept parser that recovers a range of null elements and trace types.

scholarly journals Patients’ Perceived Satisfaction Through Telephone-Assisted Tele-Consultation During the SARS-CoV-2 Pandemic Period: Observational Single-Centre Study at a Tertiary-Referral Colorectal Surgery Department

2021 ◽  
pp. 155335062110080
Author(s):  
Lara Blanco Terés ◽  
Carlos Cerdán Santacruz ◽  
Javier García Septiem ◽  
Rocío Maqueda González ◽  
José María Lopesino González ◽  
...  
Keyword(s):  
Categorical Variables ◽  
Average Score ◽  
Job Status ◽  
Perceived Satisfaction ◽  
The Future ◽  
Chi Squared ◽  
Single Centre Study ◽  
Set Up ◽  
Almost All ◽  
Surgery Department

Introduction: The pandemic produced by SARS-CoV-2 has obliged us to set up the tele-assistance to offer a continuity of care. This implies an innovation, being the degree of satisfaction of patients unknown. Methods: A telephonic survey was conducted with the validated in the Spanish tool Telehealth Usability Questionnaire (Telehealth Usability Questionnaire; rating from 1-7) of all candidate patients assisted consecutively in the Coloproctology Unit. We included demographic variables, education level, job status, diagnosis and consultation type. A descriptive study was done. The relationship between the willingness of consultation model in the future (telemedicine vs traditional) and the categorical variables was analysed through the chi-squared test. Results: A total of 115 patients were included. The average age was 59.9 years, being 60% women. The average score in each of the survey items was higher than 6 in all the questions but 1. 26.1% of the surveyed patients confessed being advocated to tele-assistance in the future. The only factors related to greater willingness to tele-assistance were male gender (37% vs 18.8%; P = .03) and a higher academic preparation level in favour of higher technical studies (35.9%) and university studies (32.4%) opposite to the rest ( P = .043). The rest of variables studied, job status, labour regimen, diagnostic group and consultation type did not show any relationship. Conclusions: A vast majority of patients answered favourably to almost all the items of the survey. However, only 26.1% of them would choose a model of tele-assistance without restrictions.

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