Calibration of rotating 2D LIDAR based on simple plane measurement

Sensor Review ◽  
2019 ◽  
Vol 39 (2) ◽  
pp. 190-198 ◽  
Author(s):  
Zhe Gao ◽  
Jun Huang ◽  
Xiaofei Yang ◽  
Ping An

Purpose This paper aims to calibrate the mounted parameters between the LIDAR and the motor in a low-cost 3D LIDAR device. It proposes the model of the aimed 3D LIDAR device and analyzes the influence of all mounted parameters. The study aims to find a way more accurate and simple to calibrate those mounted parameters. Design/methodology/approach This method minimizes the coplanarity and area of the plane scanned to estimate the mounted parameters. Within the method, the authors build different cost function for rotation parameters and translation parameters; thus, the parameter estimation problem of 4-degree-of-freedom (DOF) is decoupled into 2-DOF estimation problem, achieving the calibration of these two types of parameters. Findings This paper proposes a calibration method for accurately estimating the mounted parameters between a 2D LIDAR and rotating platform, which realizes the estimation of 2-DOF rotation parameters and 2-DOF translation parameters without additional hardware. Originality/value Unlike previous plane-based calibration techniques, the main advantage of the proposed method is that the algorithm can estimate the most and more accurate parameters with no more hardware.

2017 ◽  
Vol 34 (8) ◽  
pp. 8-19
Author(s):  
Stacy Brody

Purpose The purpose of this paper is to profile various types of Web-based tools to facilitate research collaboration within and across institutions. Design/methodology/approach Various Web-based tools were tested by the author. Additionally, tutorial videos and guides were reviewed. Findings There are various free and low-cost tools available to assist in the collaborative research process, and librarians are well-positioned to facilitate their usage. Practical implications Librarians and researchers will learn about various types of tools available at free or at low cost to fulfill needs of the collaborative research process. Social implications As the tools highlighted are either free or of low cost, they are also valuable to start-ups and can be recommended for entrepreneurs. Originality/value As the realm of Web-based collaborative tools continues to evolve, the options must be continually revisited and reviewed for currency.


2014 ◽  
Vol 31 (6) ◽  
pp. 8-11
Author(s):  
Thomas Finley

Purpose – The purpose of this article is to review apps that will enable librarians to take back control of their own mental space and hopefully provide some means to relaxation. Sometimes it is hard to find a soothing space amidst the chaos of the outside world. Our library users turn to the author to provide these spaces in their own lives, but paradoxically, today’s librarian may find little relaxation within their own library’s walls. Design/methodology/approach – The author tests and reviews apps designed to help librarians relax. Findings – The author reviews various different apps designed to help librarians relax. Originality/value – The apps reviewed here will enable librarians to take back control of their own mental space and hopefully, provide some means to relaxation.


2018 ◽  
Vol 34 (9) ◽  
pp. 35-36

Purpose Reviews the latest management developments across the globe and pinpoints practical implications from cutting-edge research and case studies. Design/methodology/approach This briefing is prepared by an independent writer who adds their own impartial comments and places the articles in context. Findings Developing a feeling of authenticity about products amongst the target customer base is an essential goal for marketers even in terms of low cost items. Consumers derive information from a broad range of marketing communications and consistency is a key element for success. Originality/value The briefing saves busy executives and researchers hours of reading time by selecting only the very best, most pertinent information and presenting it in a condensed and easy-to-digest format.


2014 ◽  
Vol 25 (2) ◽  
pp. 171-194 ◽  
Author(s):  
Jochen Wirtz ◽  
Sven Tuzovic ◽  
Volker G. Kuppelwieser

Purpose – The purpose of this paper is to explore the role of marketing in today's enterprises and examines the antecedents of the marketing department's influence and its relationship with market orientation and firm performance. Design/methodology/approach – Data were collected from the West (i.e. the USA and Europe) and the East (i.e. Asia). Partial least squares (PLS) was used to estimate structural models. Findings – The findings support the idea that a strong and influential marketing department contributes positively to firm performance. This finding holds for Western and Asian, and for small/medium and large firms alike. Second, the marketing department's influence in a firm depends more on its responsibilities and resources, and less on internal contingency factors (i.e. a firm's competitive strategy or institutional attributes). Third, a marketing department's influence in the West affects firm performance both directly and indirectly (via market orientation). In contrast, this relationship is fully mediated among Eastern firms. Fourth, low-cost strategies enhance the influence of a firm's marketing department in the East, but not in the West. Research limitations/implications – The paper assumes explicitly that a marketing department's influence is an antecedent of its market orientation. While the paper finds support for this link, the paper did not test for dual causality between the constructs. Originality/value – Countering the frequent claim in anecdotal and journalistic work that the role of the marketing department diminishes, the findings show that across different geographic regions and firm sizes, strong marketing departments improve firm performance (especially in the marketing-savvy West), and that they should continue to play an important role in firms.


2014 ◽  
Vol 114 (9) ◽  
pp. 1344-1359 ◽  
Author(s):  
Bee Yee Liau ◽  
Pei Pei Tan

Purpose – The purpose of this paper is to study the consumer opinion towards the low-cost airlines or low-cost carriers (LCCs) (these two terms are used interchangeably) industry in Malaysia to better understand consumers’ needs and to provide better services. Sentiment analysis is undertaken in revealing current customers’ satisfaction level towards low-cost airlines. Design/methodology/approach – About 10,895 tweets (data collected for two and a half months) are analysed. Text mining techniques are used during data pre-processing and a mixture of statistical techniques are used to segment the customers’ opinion. Findings – The results with two different sentiment algorithms show that there is more positive than negative polarity across the different algorithms. Clustering results show that both K-Means and spherical K-Means algorithms delivered similar results and the four main topics that are discussed by the consumers on Twitter are customer service, LCCs tickets promotions, flight cancellations and delays and post-booking management. Practical implications – Gaining knowledge of customer sentiments as well as improvements on the four main topics discussed in this study, i.e. customer service, LCCs tickets promotions, flight cancellations or delays and post-booking management will help LCCs to attract more customers and generate more profits. Originality/value – This paper provides useful insights on customers’ sentiments and opinions towards LCCs by utilizing social media information.


2016 ◽  
Vol 15 (1) ◽  
pp. 14-19 ◽  
Author(s):  
Stefanie Frenking

Purpose – The purpose of this paper is looking at Feel Good Management as a valuable tool to shape workplace culture and drive employee happiness: a low cost but priceless strategy for engaging a global workforce. Design/methodology/approach – A look back at Feel Good Management in practice after four years in global workforce. Findings – Very favorable impact on recruitment, retention and engagement. Research limitations/implications – A potentially valuable tool for retaining global talent with strong management support and continuous branding of the culture. Practical implications – One manager can shape and act as ambassador but the entire workforce must embrace the approach for true success. Social implications – Employees, especially millennials, care about far more than a paycheck. They want to feel valued and a part of something. Originality/value – Every company is different but any entity can benefit from a strategic focus on shaping workplace culture.


2016 ◽  
Vol 28 (4) ◽  
pp. 449-462 ◽  
Author(s):  
Shuaitong Liang ◽  
Xue Mei Ding ◽  
Xiong Ying Wu ◽  
Fan Wu ◽  
Tesfaye Mulu Asmamaw

Purpose – Smooth appearance of fabrics after ironing with steam, soleplate, ironing speed and their interactions cannot be studied using household ironing machines such as hang steamer and flatiron. The purpose of this paper is to present the design and verification of a simple, low-cost test platform based on the fabric materials hang-ironing factors includes temperature, humidity, ironing speed (time). Design/methodology/approach – This platform achieves adjustable and stable steam flow rate, enabling any ironing speed and any temperature of soleplate below 200°C. Moreover, the whole ironing process is automatically after experiment level set ahead for better observation to the ironing process. Findings – Regression results of the apparatus are stable, statistical significant which is verified by the statistics under design of experiment. Originality/value – It is useful in other aspects such as nozzle test and improvement, new products evaluation and smooth appearance level experiment and test for new ironing product and its research. It is also useful in other aspects such as nozzle test and improvement, new products evaluation and smooth appearance level experiment and test for new ironing product and its research.


2014 ◽  
Vol 63 (6/7) ◽  
pp. 436-451 ◽  
Author(s):  
Nikitas N. Karanikolas ◽  
Christos Skourlas

Purpose – The purpose of this paper is to examine personal digital libraries (PDL) as a self-archiving approach, mainly based on individuals’ activities. Literature presents a wide range of perceptions of the term PDL. The rationale of using PDL and the capabilities that PDL should offer are also discussed. The key questions we focus on are: “What are the critical features of PDL?” and “Are there technologies that enable the implementation/incorporation of such capabilities in a low cost software product?” Design/methodology/approach – We focus on “a user centred view of information process”, and examine how PDL could assist individuals to “create, seek, share and manage the life of information” (Foster et al., 2010). The capabilities that PDL should support, and the related technologies, are also discussed. Then, we describe experimentation with a prototype implemented to support/provide the mentioned capabilities. It is used to clarify our view for the creation of PDL. Finally, further discussion and conclusions are presented. Findings – The technology is mature enough for building up PDLs with the specified features/capabilities. Originality/value – A new perception of the term PDLs is presented. This perception tries to combine the self-archiving approach of information, based on a low-cost tool, and the user-centred approach to manage the “life of information”. This type of library is mainly used to cover personal needs. Users benefit from this type of PDL by personalised handling of information, reduced time to search and seek specific documents in their personal collections and less possibility for broken links or unavailable documents. We must also mention that new opportunities seem to appear for offering PDL as a service in the cloud.


2017 ◽  
Vol 34 (10) ◽  
pp. 15-21 ◽  
Author(s):  
Sonya Rapinta Manalu ◽  
Jurike Moniaga ◽  
Dionisius Andrian Hadipurnawan ◽  
Firda Sahidi

Purpose Low-cost microcomputers such as the Raspberry Pi are common in library makerspaces. This paper aims to create an OBD-II technology to diagnose a vehicle’s condition. Design/methodology/approach An OBD-II scanner plugged into the OBD-II port or usually called the data link connector (DLC), sends diagnostics to the Raspberry Pi. Findings Compared with other microcontrollers such as Arduino, the Raspberry Pi was chosen because it sustains the application to receive real-time diagnostics, process the diagnostics and send commands to automobiles at the same time, rather than Arduino that must wait for another process finished to run another process. Originality/value This paper also represents the history of mobile technology and OBD-II technology, comparison between Arduino and Raspberry Pi and Node.


2019 ◽  
Vol 32 (3) ◽  
pp. 297-306
Author(s):  
Songying Mo ◽  
Manni Mo ◽  
Kai-Chiu Ho

Purpose Under extremely cold weather, traditional winter clothing may not be adequate to keep warm in the harsh environment. The paper aims to discuss this issue. Design/methodology/approach Wearable heat-generating (electric heating) clothing which covers the thermal sensitive zone of the human body can protect the human body from hypothermia. Existing heatable jacket in the market using carbon fiber is relatively expensive, complicated and require a lengthy manufacturing time. Findings Through experimental evaluation, the textile treated by plasma-assisted metal coating (PAC) has demonstrated excellent stability in temperature during the heating process. Originality/value This paper introduces an innovative, low-cost PAC technology using optimized plasma-assisted metallic deposition that is able to preserve the physical properties of the textile.


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