In order to meet the needs of intelligent perception of the driving environment, a point cloud registering method based on 3D NDT-ICP algorithm is proposed to improve the modeling accuracy of ...tunneling roadway environments. Firstly, Voxel Grid filtering method is used to preprocess the point cloud of tunneling roadways to maintain the overall structure of the point cloud and reduce the number of point clouds. After that, the 3D NDT algorithm is used to solve the coordinate transformation of the point cloud in the tunneling roadway and the cell resolution of the algorithm is optimized according to the environmental features of the tunneling roadway. Finally, a kd-tree is introduced into the ICP algorithm for point pair search, and the Gauss–Newton method is used to optimize the solution of nonlinear objective function of the algorithm to complete accurate registering of tunneling roadway point clouds. The experimental results show that the 3D NDT algorithm can meet the resolution requirement when the cell resolution is set to 0.5 m under the condition of processing the point cloud with the environmental features of tunneling roadways. At this time, the registering time is the shortest. Compared with the NDT algorithm, ICP algorithm and traditional 3D NDT-ICP algorithm, the registering speed of the 3D NDT-ICP algorithm proposed in this paper is obviously improved and the registering error is smaller.
Full text
Available for:
IZUM, KILJ, NUK, PILJ, PNG, SAZU, UL, UM, UPUK
This study investigates beginnings of dyadic encounters between acquainted persons in a ‘semi-public’ space, namely, staff breakrooms of Finnish work communities. Drawing on video data and using ...ethnomethodological conversation analysis as the method, we examine the coordinated vocal-bodily exchanges that participants carry out under close mutual monitoring as they establish co-presence and initiate interaction (through greetings and registerings) while also engaging in other, situated, break-relevant activities as part of an oriented-to, established routine of beginning, and being on, a break from work. We show how participants skillfully manage their simultaneous involvements in these activities, and how the specific vocal-bodily practices by which participants open their encounters in the breakroom index their orientation to each other as ‘familiars’ and to their encounters as highly routinized, recurring and ‘expected’ (rather than as ‘special’ or ‘not-everyday’) occurrences. Data are in Finnish with English translation.
•Breaktime routines and social norms shape encounters in the breakroom in many ways.•Participants manage their multiple involvements through different vocal and bodily resources.•Participants’ spatial position affects the sequential organization and timing of openings.•Participants orient to each other as ‘familiars’ and to their encounter as ‘expected’.
Full text
Available for:
GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
Replacement of C1q globular regions (GR) by type IX collagen nc2 domains allows the recombinant production of well‐assembled and folded C1q collagen‐like regions (CLR). This represents the first ...reported production of a chimeric C1q devoid of its GR functions while retaining CLR properties. Such development is of great interest and opens the way to molecular investigations of CLRs major functions such as complement activation and immune modulation.
Complement component C1q, a soluble defense collagen, is the recognition protein of the classical complement pathway. C1q is able to recognize and interact with multiple targets and, via the subsequent activation of its cognate serine proteases C1r and C1s, initiates the complement cascade. C1q is made up of six ABC heterotrimers each containing two different functional regions, an N‐terminal collagen‐like region (CLR) and a C‐terminal globular region (GR). These heterotrimers assemble via their N‐terminal regions, resulting in the characteristic ‘bouquet‐like’ shape of C1q with an N‐terminal bundle of collagen fibers with six diverging stems each exhibiting a C‐terminal globular head. The GRs are responsible for the versatile recognition of multiple C1q targets, whereas the CLRs trigger immune response through interacting with several cellular or soluble partners. We report here the generation of the first recombinant form of human C1q without its recognition globular heads. The noncollagenous domain 2 (nc2) of type IX collagen has been substituted for the C1q GR in order to control the correct registering of the collagen triple helices of C1q chains A, B, and C. The resulting CLR_nc2 recombinant protein produced in stably transfected EXPI293 mammalian cells was correctly assembled and folded, as demonstrated by mass spectrometry, mass photometry, and electron microscopy experiments. Its interaction properties were investigated using surface plasmon resonance analysis with known CLR ligands: the tetramer of C1r and C1s dimers and MBL‐associated protein MAp44. Comparison with the interaction properties of native serum‐derived C1q and CLR revealed that recombinant CLR_nc2 retains C1q CLR functional properties.
Full text
Available for:
BFBNIB, DOBA, FZAB, GIS, IJS, IZUM, KILJ, NLZOH, NUK, OILJ, PILJ, PNG, SAZU, SBCE, SBMB, SIK, UILJ, UKNU, UL, UM, UPUK
This brief presents an all-digital PLL (AD-PLL) for a DDR5 registering clock driver (RCD) with a self-biased supply-noise-compensation (SNC) technique. By combining two Nagata current sources that ...have opposite dependency on supply variations, it offers a constant current to a ring oscillator over a wide range of supply voltage. Thereby, the dynamic voltage droop due to variations in workload is compensated while a voltage margin for mass production is improved. Since the SNC technique operates independently of the PLL loop bandwidth without using feedback, the proposed AD-PLL is free from the stability problem associated with bandwidth overlapping. Quantitative analyses on static and dynamic characteristics of the proposed SNC technique and relevant design considerations are addressed. Fabricated in the 28-nm CMOS technology, the AD-PLL occupies an active area of 0.06 mm 2 and consumes 12.1 mW at 3.0 GHz with a 1.1 V supply voltage. The power-supply-noise-attenuation (PSNA) is measured as 40 dB and the integrated rms jitter of 271 fs is observed.
Once treated as the absence of knowledge, ignorance today has become a highly influential topic in its own right, commanding growing attention across the natural and social sciences where a wide ...range of scholars have begun to explore the social life and political issues involved in the distribution and strategic use of not knowing. The field is growing fast and this handbook reflects this interdisciplinary field of study by drawing contributions from economics, sociology, history, philosophy, cultural studies, anthropology, feminist studies, and related fields in order to serve as a seminal guide to the political, legal and social uses of ignorance in social and political life.
The phenomenon of a museum library in Poland is the only topic of the present paper. Addressed to the academics dealing with the issues related to museum organization or collection development, it is ...also, or maybe first of all, targeted at the higher-ranking management staff, since it does not only offer an introduction to the discussed issue, but also an attempt at mapping problematic questions along the relation: parent museum – museum library, as well as challenges connected with legal solutions and the museum librarian job.
Wireless Sensor Networks (WSNs) consist of small, irreplaceable batteries that are able to detect, collect and transmit data. Sink node mobility is an efficient approach to improving the lifetime of ...the network to reduce overhead signaling and achieve a high packet delivery ratio. The use of energy is the large number of WSNs, there are so many routing algorithms and for the energy consuming problem, routing protocols are developed. It focuses on sink mobility and routing protocols, which may differ depending on the architecture of the application and network. The state of the art of sink mobility in WSNs is presented as a survey with routing protocols. The challenges in the design of the protocols are presented and the comparison of the latest routing protocols supported by mobile sinks is also described and the other issues also listed in WSNs are discussed, followed by the conclusion.
Full text
Available for:
EMUNI, FIS, FZAB, GEOZS, GIS, IJS, IMTLJ, KILJ, KISLJ, MFDPS, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, SBMB, SBNM, UKNU, UL, UM, UPUK, VKSCE, ZAGLJ
In midcentury Canada, legislative drafters, government lawyers, food and drug officials, and ministers grappled with cosmetics. Faced with constitutional concerns about cosmetic licensing, these ...actors drafted legislative amendments that would instead require cosmetics to be registered. In contrast to people or land, the registration of products, substances, or things has received little attention in sociolegal scholarship. Building on work investigating law's temporalities and materiality, this account traces how in-formed by the constitutional doctrine that apprehended substances through the legal form of prohibition, cosmetics were rendered in draft legislation as constituted of ingredients that may cause injury. Injury, in this account, is a material-temporal regime. Yet cosmetic injury was neither static nor singular, as it was catalysed differently by distinctive regulatory devices. This is shown by last-minute changes to the bill which retooled cosmetic registration, from an information extraction device for anticipating future harms, into a recording device for capturing latent harms.
Full text
Available for:
NUK, OILJ, SAZU, UKNU, UL, UM, UPUK
PDF
