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The purpose of this paper is to present a novel application for a newly developed Technical Vision System (TVS), which uses a laser scanner and dynamic triangulation, to determine the vitality of agriculture vegetation. This vision system, installed on an unmanned aerial vehicle, shall measure the reflected laser energy and thereby determine the normalized differenced vegetation index.

The newly developed TVS shall be installed on the front part of the unmanned aerial vehicle, to perform line-by-line scan in the vision system field-of-view. The TVS uses high-quality DC motors, instead of previously researched low-quality DC motors, to eliminate the existence of two mutually exclusive conditions, for exact positioning of a DC motor shaft. The use of high-quality DC motors reduces the positioning error after control.

Present paper emphasizes the exact laser beam positioning in the field-of-view of a TVS. By use of high-quality instead of low-quality DC motors, a significant reduced positioning time was achieved, maintaining the relative angular position error less than 1 per cent. Best results were achieved, by realizing a quasi-continuous control, using a high pulse-width modulated duty cycle resolution and a high execution frequency of the positioning algorithm.

The originality of present paper is represented by the novel application of the newly developed TVS in the field of agriculture. The vitality of vegetation shall be determined by measuring the reflected laser energy of a scanned agriculture zone. The paper’s main focus is on the exact laser beam positioning within the TVS field-of-view, using high-quality DC motors in closed-loop position control configuration.

The paper aims to present a literary itinerary inspired in Julio Dinis’ novel An English Family (Uma Família Inglesa) through a comparative analysis of the places identified in the novel and the touristic attraction proposed by Visit Porto website. This novel is representative of the cultural identity and society of Porto city in the 19th century. Developing an itinerary based on this novel can facilitate the reading and understanding of the historical and cultural development of Porto.

This case study is based on the reading of the Julio Dinis’ novel An English Family (Uma Família Inglesa), whose storyline takes place in Porto city, Portugal in the 19th century. It used QGIS v. 3.12 software, a geographical information system to identify the places, to produce the maps and to create the itinerary.

The comparison between the places identified in the novel and the tourist attraction in Visit Porto website revealed that only 6 points in the novel are referenced on Visit Porto website. These points correspond to the ones in the historical city centre of Porto. However, the creation of an itinerary that brings together all the points mentioned by Julio Dinis in his novel, will allow the development of a new touristic itinerary, alternative to existing itineraries in the city and that can be seen as a distinguish offer that allows a different view of the urban space of Porto.

There are some limitations to this study that can be highlighted. First, it was difficult to find the correct location of some points identified in the novel, due to difficulty of finding historical maps with quality of the data. At the same time, as tourist information is dispersed by several sources, and most of those data is not georeferenced, it was time consuming the integration of all the information in the same geodatabase. The choice of the shortest path can also be considered as a limitation, rather than the route followed by the author in the novel, but geographic information systems operates on spatial and temporal scale, which can present a limitation in tourism analysis. In the case of this project, we have chosen the shortest path, assuming that tourist would prefer that.

This research allowed to address two areas of knowledge that are emerging in the study of urban centres as tourist areas: the use of GIS and literary tourism. Despite the fact that there are already articles on this subject, the originality focuses on the approach made around one of the greatest writers of Portugal in the 19th century, allowing to present a tourist itinerary about one of his literary works, and the comparison made between the places identified in the novel and the tourist points identified on the Visit Porto website.

The purpose of this paper is to study the existence of psychological barriers in cryptocurrencies.

To detect psychological barriers, the authors perform a uniformity test, a barrier hump test, a barrier proximity test and conditional effects test to a sample comprised by the daily closing quotes of six of the most liquid cryptocurrencies.

The results evidence the existence of psychological barriers in four of the cryptocurrencies under scrutiny, namely, Bitcoin, Dash, NEM and Ripple.

The fact that the cryptocurrency market has a high share of unexperienced investors and presents several cases of psychological barriers is consistent with the hypothesis that that class of investors is particularly prone to the behavioral biases which cause psychological barriers.

This paper studies, for the first time, the existence of psychological barriers in the market of cryptocurrencies.

This paper aims to critically review the progression of wireless technologies in tourism and hospitality since 2000. Wireless technologies are a set of information and communications technologies (ICTs) involving radio transmission (such as mobile or satellite technologies) that are extensively used in tourism and hospitality, but which have not yet been studied comprehensively.

This study is a mixed methods review combining a quantitative and qualitative approach and including a systematic review of the academic literature since 2000.

Contrary to the prevailing focus of study on mobile technologies, the authors open the field to other technologies (such as Zigbee or Bluetooth), and in a particular highlight, the large role played by satellite technology in tourism and how this is reflected in the literature. In literature reviews linking tourism and ICTs, the authors find that excluding some journals may leave out notable aspects for any systematic analysis. Moreover, the study highlights the importance of wireless technologies in a sensor-based convergence between the physical and digital worlds.

The contribution is mainly twofold: first, the authors develop the literature on tourism with a better understanding of the role played by these technologies in supporting tourism and hospitality, by updating sources and research work; second, the authors take a holistic, all-encompassing approach, providing a truly comprehensive view of the literature on tourism and ICTs, in which wireless technologies have always been approached with fragmented or limited scope, lacking a view in the round.

论无线科技在酒店和旅游业中的发展进程

摘要

本论文批判性评论了自2000年起无线科技在酒店和旅游业中的发展过程。无线科技是一组有关无线电传输的信息通信技术（ICTs）（如移动技术或者卫星技术)，这种技术在酒店旅游业中使用频繁，但是却没有得到全面的研究。

本论文采用混合方法，评论了自2000年来发表的定量和定性研究的文章。

比起大部分移动技术研究的文章，本论文延展了研究领域到其他技术（如Zigbee或蓝牙), 特别强调了卫星技术在旅游业的重大作用，以及文献中所研究的重点。在连接旅游业和ICTs的文献中, 我们发现一些期刊漏掉了很多系统分析的重要方面。此外，我们的研究还强调了无线科技在感应器为基础的物联网世界的重要性。

研究结果的贡献大致有两点：首先，我们更新了数据库和研究作品，展示了旅游相关文献，深入理解了这些科技是如何支撑旅游和酒店业的发展。第二，我们采用了整体全面的研究方法，提供旅游和ICTs有关的文献体系，而之前的文献往往对无线科技的研究是片面的或者不成体系。

关键词：无线科技、旅游业、酒店业、IoT、移动、卫星

“A knowledge of different literatures is the best way to free one's self from the tyranny of any of them.” Jose Marti, Cuban writer, poet and statesman.

The purpose of this paper is to measure the relationships between advanced manufacturing technologies (AMTs) categories (stand-alone, intermediated and integrated systems) implementation and design, process and commercial benefits obtained.

A survey is designed with benefits gained from AMT implementation as well as its categories, which is applied to the maquiladora industry. A structural equation model with data from 383 responses is used to measure the relationship between AMT categories and benefits gained using nine hypotheses that are tested statistically significant using partial least squares. Also, using conditional probabilities, a sensitivity analysis reports how low and high levels from AMT implementation influence on the obtained benefits.

Integrated systems are the most important AMT for maquiladoras and have the strongest impact on design, processes and commercial benefits.

Data obtained support the model, but results may be different in another industrial sector and countries with different labor culture and technological level.

Managers in maquiladora industry must focus their attention on integrated manufacturing systems, because high implementation levels guarantee the biggest probability to gain benefits in design, production process and commercial.

The relationship between AMT and their benefits has not been measured in depth, and this paper contributes to understand that problem. In addition, this paper is the first to report a sensitivity analysis that enables managers to acknowledge the probability of obtaining certain benefits.

This study aims to investigate the nonfinancial information related to capitals (intellectual, human, social and relationship, and natural) demanded by professional investors in their decision-making process, which can improve the usefulness of integrated reporting for this target audience.

A Systematic Literature Review in the Scopus, Web of Science and Google Scholar databases enabled the identification of information demanded by professional investors. This information was presented to experienced Brazilian investors participating in a focus group to align the theory on this topic with professional practice.

The results allow us to conclude that the focus group participants' perception is aligned with the international literature, both in the importance given to most of the nonfinancial information items identified and in the lack of interest in using integrated reporting in investment decisions. Nonetheless, the general perception of the focus group is not aligned with the literature procedures in terms of social and environmental information.

A study with a larger scope and the adoption of other approaches can contribute to broaden the understanding of the perspectives of professional investors in Brazil, as well as in other regions.

The authors provide evidence that contributes to discussions about the information to be disclosed in integrated reports. Their results are useful to legislators, regulators, report preparers and investors.

The authors investigate the information demanded by professional investors in their decision-making process aiming to fill the literature gap relating the determinants of the integrated reporting disclosure and what is demanded by this target audience as a minimum content to be reported. As an additional result they offer interesting contributions to the literature providing reflections on nonfinancial information which have become important for Brazilian investors as from the COVID-19 pandemic.

This paper investigates share price clustering and its determinants across Nasdaq Stockholm, Copenhagen, Helsinki, and Iceland.

This paper investigates share price clustering and its determinants across Nasdaq Stockholm, Copenhagen, Helsinki, and Iceland. Univariate analysis confirms widespread clustering, notably favouring closing prices ending in zero. Multivariate analysis explores the impact of firm size, price level, volatility, and turnover on clustering.

Univariate analysis confirms widespread clustering, notably favouring closing prices ending in zero. Multivariate analysis explores the impact of firm size, price level, volatility, and turnover on clustering. Results reveal pervasive clustering, strengthening with higher prices and turnover but weakening with larger trade volumes, firm size, and smaller tick sizes. These empirical findings support the theoretical expectations of price negotiation and resolution hypotheses.

The observed clustering presents an opportunity for investors to potentially capitalize on this market anomaly and achieve supra-normal returns.

Price clustering, the phenomenon where certain price levels are traded more frequently, challenges the efficient market hypothesis and has been extensively studied in financial markets. However, the Scandinavian stock markets, particularly those in the Nasdaq Nordic Exchange, remain unexplored in this context.

Agency theoretic models have been used in the past to justify the use of stock options as an effective incentive alignment mechanism to create a common fate between principals and agents. In this paper, we use behavioral theory to reach the opposite conclusion – namely, that the design characteristics of the typical stock option plan foster perverse incentives for loss‐averse agents, leading to decisions with detrimental consequences for principals. We also consider alternative stock option designs and other equity‐based executive compensation plans and argue that they may suffer from the same problems as traditional stock option plans – namely, that loss‐averse executives will try to protect the endowed value of that equity through self‐serving decisions that do not enhance shareholder wealth.

This paper aims to explore the nonfinancial drivers of value creation that influence an investment decision and present a set of drivers that contribute with a useful integrated reporting to its providers of financial capital using evidence from Brazil.

This paper is based on a systematic literature review in the Scopus, Web of Science and Google Scholar databases in the period from 2005 to 2020. Interpretive content analysis is used in 42 documents identified to explore nonfinancial drivers to demand by providers of financial capital, which are classified according to the capitals nonfinancial suggested by the integrated report (IR). Then, the results are evaluated by Brazilian professional investors in a focus group.

The members of the focus group do not consider the IR relevant to investment decision and neither the information about natural capital nor social capital. They highlighted two nonfinancial drivers of value not identified in the previous literature.

The focus group is limited by subjects’ availability and by the participants’ number. But its results represent initial discussions on the subject in the Brazilian context.

The results of this study have value, principally, to investors, target audience of IR, because it aligns your demands with the IRs content, improving its usefulness.

To the best of the authors’ knowledge, this manuscript is the first study to investigate the perception of Brazilian professional investors about the importance of the IR in investment decision-making and to identify content relevant to the financial capital provider’s investment decision, which can improve the usefulness of IR.