Results 81 to 90 of about 39,830 (276)

UDWDM-PON using low-cost coherent transceivers with limited tunability and heuristic DWA [PDF]

open access: yes, 2016
A new Passive Optical Network (PON) for access, making use of Ultra Dense Wavelength Division Multiplexing (UDWDM) by densely spacing channels at few GHz, and introducing the “wavelength-to-the-user” concept, is proposed.
Polo Querol, Víctor   +4 more
core   +2 more sources

Dietitian‐led very low‐calorie diet for preoperative rehabilitation in patients with obesity awaiting non‐bariatric elective laparoscopic surgery: A retrospective study

open access: yesNutrition in Clinical Practice, Volume 41, Issue 3, Page 892-904, June 2026.
Abstract Background Obesity increases the risks and complexity of laparoscopic surgeries. Preoperative very low‐calorie diets (VLCDs) can demonstrate significant preoperative weight loss. However, the optimal VLCD duration remains unclear. Excessive loss of muscle mass associated with VLCDs may elevate surgical and postoperative risks. This study aimed
Gerald Wei Shen Wong   +4 more
wiley   +1 more source

AWG插入损耗性能的分析和改善

open access: yesGuangtongxin yanjiu, 2003
阵列波导光栅 ( AWG)是实现密集波分复用 ( DWDM)光网络的理想器件 ,插入损耗是它的一个重要性能指标 .文章在综述了多种减小 AWG器件插入损耗方法的基础上 ,分析了如何使用楔形波导结构来降低模式失配所导致的耦合损耗 .这种方法可以在不增加器件制作难度的同时大大降低 AWG的插入损耗 ,并且适用于各种材料和结构的 ...
万莉, 吴亚明, 王跃林
doaj  

Efficient protection schemes for hybrid WDM/TDM passive optical networks [PDF]

open access: yes, 2012
Hybrid WDM/TDM Passive Optical Network (PON) is a promising candidate for next-generation optical access (NGOA) solutions as it is able to offer a high splitting ratio and consequently achieves a relatively low cost and power consumption on a per-user ...
Chen, Jiajia   +5 more
core   +1 more source

Glycaemic Control, Blood Pressure and Lifestyle Behaviours in Relation to Sarcopenia Among Older Adults in Korea: A Population‐Based Cross‐Sectional Study

open access: yesAustralasian Journal on Ageing, Volume 45, Issue 2, June 2026.
ABSTRACT Objective The aim of this study was to estimate the prevalence of sarcopenia and examine its associations with glycaemic control, blood pressure and lifestyle behaviours among older adults in Korea. Methods We conducted a secondary analysis of the 2023 Korea National Health and Nutrition Examination Survey that included 1394 adults aged 65 ...
Kyeongmin Jang
wiley   +1 more source

Resource Allocation With Minimum Outage Probability in Multicarrier Multicast Systems

open access: yesIEEE Access, 2018
Several innovative applications are emerging that require significant multimedia data transmissions, which unfortunately, current communication systems struggle to provide.
Duc-Phuc Vuong   +2 more
doaj   +1 more source

First starlight spectrum captured using an integrated photonic micro-spectrograph

open access: yes, 2012
Photonic technologies have received growing consideration for incorporation into next-generation astronomical instrumentation, owing to their miniature footprint and inherent robustness.
Allington-Smith   +18 more
core   +1 more source

Nursing Perspectives on Factors That Influence Provision of Patient‐Centered Care for Autistic Patients in a Large Urban Hospital System: A Qualitative Study

open access: yesJournal of Advanced Nursing, Volume 82, Issue 6, Page 6297-6310, June 2026.
ABSTRACT Aim To characterise nurses' perspectives on factors that influence their ability to provide patient‐centered nursing care for autistic patients in a large urban hospital setting. Design Qualitative exploratory study. Methods We conducted semi‐structured interviews via Zoom with nurses from a large urban hospital serving primarily adult ...
Amy Watson‐Grace   +7 more
wiley   +1 more source

On-Chip Sub-Picometer Continuous Wavelength Fiber-Bragg-Grating Interrogator

open access: yesPhotonic Sensors
Miniaturized fiber-Bragg-grating (FBG) interrogators are of interest for applications in the areas where weight and size controlling is important, e.g., airplanes and aerospace or in-situ monitoring.
Yuan Zhuang   +6 more
doaj   +1 more source

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