Results 31 to 40 of about 15,243 (254)

Wireless sensor home automation networks based upon Sun SPOT

open access: yes, 2011
This paper aims to develop a simple wireless sensor home automation network (WSHAN). The WSHAN is implemented using two different specialised motes, i.e, collector and interface motes.
Xiang, Wei   +7 more
core   +1 more source

Attitude determination and control for centrifugal tether deployment on the ESTCube-1 nanosatellite; pp. 242–249 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2014
This paper presents the design, development, and pre-launch characterization of the ESTCube-1 Attitude Determination and Control System (ADCS). The design driver for the ADCS has been the mission requirement to spin up the satellite to 360 deg × s–1 ...
Andris Slavinskis   +22 more
doaj   +1 more source

Extending sensor networks into the Cloud using Amazon Web Services

open access: yes, 2010
Sensor networks provide a method of collecting environmental data for use in a variety of distributed applications. However, to date, limited support has been provided for the development of integrated environmental monitoring and modeling applications ...
Kevin Lee   +15 more
core   +1 more source

Sleep Scheduling with Expected Common Coverage in Wireless Sensor Networks [PDF]

open access: yes, 2010
Sleep scheduling, which is putting some sensor nodes into sleep mode without harming network functionality, is a common method to reduce energy consumption in dense wireless sensor networks.
Korpeoglu, Ibrahim   +5 more
core   +1 more source

Active Pixel Digital Sun Sensor for Satellites

open access: yes, 2018
Satellites use sun sensors as a reliable source of attitude determination during sunlit conditions while in orbit around the earth. This work elucidates the design and development of high precision and wide field of view digital sun sensor for space ...
Qureshi, Javad Khalid   +11 more
core   +1 more source

Sun sensor design and test of a micro satellite [PDF]

open access: yes, 2016
According to the requirement of small satellite, this paper designed a digital sun sensor which diaphragm is a V-shaped cross-section structure. Using Position Sensitive Detector (PSD) as the light detector, we designed the V-shaped cross-section ...
Tan Luyang   +3 more
core   +1 more source

Nuclear pore links Fob1‐dependent rDNA damage relocation to lifespan control

open access: yesFEBS Open Bio, EarlyView.
Damaged rDNA accumulates at a specific perinuclear interface that couples nucleolar escape with nuclear envelope association. Nuclear pores at this site help inhibit Fob1‐induced rDNA instability. This spatial organization of damage handling supports a functional link between nuclear architecture, rDNA stability, and replicative lifespan in yeast.
Yamato Okada   +5 more
wiley   +1 more source

Fabrication of Composite Microneedle Array Electrode for Temperature and Bio-Signal Monitoring

open access: yesSensors, 2018
Body temperature and bio-signals are important health indicators that reflect the human health condition. However, monitoring these indexes is inconvenient and time-consuming, requires various instruments, and needs professional skill.
Yiwei Sun   +4 more
doaj   +1 more source

Cutaneous Melanoma Drives Metabolic Changes in the Aged Bone Marrow Immune Microenvironment

open access: yesAging and Cancer, EarlyView.
Melanoma, the deadliest form of skin cancer, increasingly affects older adults. Our study reveals that melanoma induces changes in iron and lipid levels in the bone marrow, impacting immune cell populations and increasing susceptibility to ferroptosis.
Alexis E. Carey   +12 more
wiley   +1 more source

FS5 sun exposure survivability analysis

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2017
During the Acquisition and Safe Hold (ASH) mode, FORMOAT-5 (FS5) satellite attitude is not fully controlled. Direct sun exposure on the Remote Sensing Instrument (RSI) satellite telescope sensor may occur.
Ming-Ying Hsu   +2 more
doaj   +1 more source

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