8 research outputs found
Indoor Pedestrian Navigation Using Foot-Mounted IMU and Portable Ultrasound Range Sensors
No full textMany solutions have been proposed for indoor pedestrian navigation. Some rely on pre-installed sensor networks, which offer good accuracy but are limited to areas that have been prepared for that purpose, thus requiring an expensive and possibly time-consuming process. Such methods are therefore inappropriate for navigation in emergency situations since the power supply may be disturbed. Other types of solutions track the user without requiring a prepared environment. However, they may have low accuracy. Offline tracking has been proposed to increase accuracy, however this prevents users from knowing their position in real time. This paper describes a real time indoor navigation system that does not require prepared building environments and provides tracking accuracy superior to previously described tracking methods. The system uses a combination of four techniques: foot-mounted IMU (Inertial Motion Unit), ultrasonic ranging, particle filtering and model-based navigation. The very purpose of the project is to combine these four well-known techniques in a novel way to provide better indoor tracking results for pedestrians
Fig. 1 in Myxostoma petiverianum tenggolensis (Gastropoda: Caenogastropoda: Cyclophoridae), a new subspecies of land snail from Peninsular Malaysia
No full textFig. 1. Comparison of shells and opercula of Myxostoma petiverianum tenggolensis, new subspecies (A, E), and Myxostoma petiverianum petiverianum (Wood, 1828) (B–D, F–G). Arrows indicate the peristomal extension along the periphery of the last whorl. A, Myxostoma petiverianum tenggolensis, new subspecies, holotype (SH 22.9 × SD 32.7 mm) (MZUM MOG 000001), Pulau Tenggol, Malaysia; B, Myxostoma petiverianum petiverianum (Wood, 1828) (SH 24.2 × SD 36.1 mm) (USNM 316711), Con Son Island, Con Đảo Archipelago, Vietnam; C, Myxostoma petiverianum petiverianum (Wood, 1828) (SH 22.1 × SD 29.0 mm) (IRSNB p334781), southern Vietnam; D, original figure of Cyclostoma petiverianum illustrated in Wood (1828); E, operculum of Myxostoma petiverianum tenggolensis holotype (MZUM MOG 000001); F, operculum of Myxostoma petiverianum petiverianum (Wood, 1828) (USNM 316711); G, eroded operculum of Myxostoma petiverianum petiverianum (Wood, 1828) (IRSNB p334781). Photographs A and E by the author; photographs B and F, courtesy of Robert Hershler (USNM); photographs C and G by Yves Barette, courtesy of Yves Samyn (IRSNB); illustration D from Wood (1828) (no longer in copyright and digitised by the Biodiversity Heritage Library: http://dx.doi.org/10.5962/bhl.title.30661).Published as part of Foon, Junn Kitt, 2016, Myxostoma petiverianum tenggolensis (Gastropoda: Caenogastropoda: Cyclophoridae), a new subspecies of land snail from Peninsular Malaysia, pp. 329-334 in Raffles Bulletin of Zoology 64 on page 330, DOI: 10.5281/zenodo.450439
NISP-P spectral resolution assesment
No full textThis technical not provide a quick assessment of the spectral dispersion for NISP red grisms RGS000 and
RGS180 as well as for the NISP blue grism, namely BGS000
NISP Signal to Noise Ratio assessment
No full textThis technical provides a quick assessment of the Signal-to-Noise Ratio (SNR) of the NISP requirement for
the spectroscopy with grism RGS000 and RGS180, and of the NISP goal for the spectroscopy with grism
BGS000 and the photometry with Y, J, and H band
NISP DARK measurement during TB/TV3
No full textThis document describes analysis of the Dark acquire during the NISP-FM third Thermal Balance (TB)
and Thermal Vacuum (TV) test campaign. The test was conducted at LAM during January and February
2020
NISP optical quality measurements: the grisms
No full textThe purpose of this document is to report on the test measurement dedicated to the NISP optical quality
verification performed during the third NISP Thermal Balance (TB) and Thermal Vacuum (TV) test
campaign (thereafter TV3). This document gives detailed description of the analyses as well as the main
results of the tests focusing on the grisms optical qualit
Isolated lumbar extension exercise as an intervention for chronic low back pain
No full textLow back pain (LBP) is highly prevalent, generally categorised as ‘non-specific’ as clear diagnosis for pain is often absent, and further categorised into acute, sub-acute and chronic, with 69-75% of acute cases developing into chronic. This chronic LBP population accounts for the majority of economic costs worldwide associated with LBP. Although LBP is often ‘non-specific’, many physical dysfunctions are associated with it. Thus LBP can be regarded as multifactorial in nature. Dysfunctions include, but are not limited to: deconditioning of the lumbar extensor musculature, limited range of motion (ROM), gait abnormality and disc disorders. The novel approach of this thesis was to consider lumbar extensor deconditioning, LBP and its associated physical dysfunctions within a multifactorial framework, and the potential improvement of associated dysfunctions from intervention using isolated lumbar extension (ILEX) specifically aimed at addressing lumbar extensor deconditioning. Findings from three empirical studies are reported. The first examined limited ROM ILEX exercise compared with full ROM exercise. Results from this study support that limited ROM training is as effective as full ROM training at improving full ROM ILEX strength, pain and disability. The second study examined the effects of ILEX exercise upon lumbar spine kinematic waveform pattern variability during gait. Results from this study demonstrate that ILEX exercise significantly improves sagittal plane variability in chronic LBP participants. The final study examined the effects of ILEX exercise upon disc hydration determined indirectly through measurement of spinal height using seated stadiometry. Results from this study showed improved ILEX strength, pain and disability but did not demonstrate improvement in disc hydration. These results provide evidence for adopting a multifactorial conceptualisation of LBP in the use of ILEX exercise as a treatment. It is concluded that a wide range of improvements including pain, disability and various aspects of function relating to the multifactorial model are possible through use of a single minimal intervention involving ILEX. This conclusion has potential implications for considering direction of treatments from clinicians towards chronic LBP. Such a minimal intervention offering a wide range of benefits may reduce the need for costly and complex multi-disciplinary interventions
The social and ritual contextualisation of Ancient Egyptian hair and hairstyles from the Protodynastic to the end of the Old Kingdom
No full textHair, the most malleable part of the human body, lends itself to the most varied forms of
impermanent modifications. The resulting hairstyles convey social practices and norms,
and may be regarded as part of the “representation of self” and an integral element in
the maintenance and structuring of society. In this thesis, a systematic and quantative
investigation has been undertaken of the structural relationships between variations in
hairstyles and principal changes in social organisation in ancient Egypt from the
Protodynastic to the end of the Old Kingdom (3,350-2,181 BC), a period that witnessed
the rise, consolidation and eventually breakdown of centralised authority.
The results reveal that hairstyles were linked to the identity of individuals and
social groups, such as men, women, children and the elderly. Hairstyles were used as a
means of displaying status. After experimentation with a broad spectrum of hairstyles
during the Protodynastic and early Dynasty I, an institutionalised canon for hairstyles
was established, coinciding with the creation of administrative institutions. These
codified hairstyles continued to serve as the norms for identifying members of the
administration or signs of authority. By the end of the Old Kingdom, the hairstyles of
the elite had been adopted by the lower officials of the increased bureaucracy and
provincial elites as representations of their newly acquired power and status.
Although initially the majority of the men had their hair cut short, modifications
of short hair and the adoption of mid- and shoulder-length hair became progressively
common. The use of certain hairstyles was restricted to the higher social offices, with
longer hair being emblematic of power and divinity. Women, by contrast, initially had
long hair with greater variety occurring by Dynasty I and a more restricted array from
Dynasty II onwards. However, long hair was predominant among women of all social
statuses in all periods. Long hair may have thus been related to the perception of women
as mothers (responsible for childbirth and nursing), and hence their perceived role as
directly linked with procreation and fecundity. Although the adoption of the tripartite by
high officials was related to this ‘generative’ aspect of feminine hairstyles, it was
primarily in imitation of the God Osiris and his regenerative powers
