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2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Tibert Verhagen ◽  
Selmar Meents ◽  
Jani Merikivi ◽  
Anne Moes ◽  
Jesse Weltevreden

PurposeThis study aims to develop an understanding of how customers of a physical retail store valuate receiving location-based mobile phone messages when they are in proximity of the store. It proposes and tests a model relating two benefits (personalization and location congruency) and two sacrifices (privacy concern and intrusiveness) to message value perceptions and store visit attitudes.Design/methodology/approachThe study uses a vignette-based survey to collect data from a sample of 1,225 customers of a fashion retailer. The postulated research model is estimated using SmartPLS 3.0 with the consistent-PLS algorithm and further validated via a post-hoc test.FindingsThe empirical testing confirms the predictive validity and robustness of the model and reveals that location congruency and intrusiveness are the location-based message characteristics with the strongest effects on message value and store visit attitude.Originality/valueThe paper adds to the underexplored field of store entry research and extends previous location-based messaging studies by integrating personalization, location congruency, privacy concern and intrusiveness into one validated model.


2021 ◽  
Vol 8 (12) ◽  
Author(s):  
Raphaela Heesen ◽  
Klaus Zuberbühler ◽  
Adrian Bangerter ◽  
Katia Iglesias ◽  
Federico Rossano ◽  
...  

Human joint action seems special, as it is grounded in joint commitment—a sense of mutual obligation participants feel towards each other. Comparative research with humans and non-human great apes has typically investigated joint commitment by experimentally interrupting joint actions to study subjects’ resumption strategies. However, such experimental interruptions are human-induced, and thus the question remains of how great apes naturally handle interruptions. Here, we focus on naturally occurring interruptions of joint actions, grooming and play, in bonobos and chimpanzees. Similar to humans, both species frequently resumed interrupted joint actions (and the previous behaviours, like grooming the same body part region or playing the same play type) with their previous partners and at the previous location. Yet, the probability of resumption attempts was unaffected by social bonds or rank. Our data suggest that great apes experience something akin to joint commitment, for which we discuss possible evolutionary origins.


2021 ◽  
pp. 13-30
Author(s):  
Robert E.B. Lucas

This chapter details the data sources deployed and the approaches to deriving measures from them. National definitions of urban settlements vary but are demonstrated to match satellite imagery surprisingly well. Most selected sources ask if the place of origin was rural or urban, though in several censuses this is imputed on the nature of the location of origin, rejecting instances where locations prove too diverse; significant contrasts are not found between the two approaches. Those sources that ask place of birth show significantly lower lifetime migration from urban to rural areas than those reporting only location during childhood; their rural-urban migration propensities do not differ. Measures of migrant flow rates, return migration, and other temporary moves require interim location information. Sources reporting the previous location and duration of residence prove more useful than those asking location five years before. A contention of symmetry between rural-urban and urban-rural migration propensities is rejected.


Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5904
Author(s):  
Jorge Soriano Vicedo ◽  
Javier García Barba ◽  
Jorge Luengo Frades ◽  
Vicente Negro Valdecantos

The analysis of the soil behavior when the pile is driving into the seabed in offshore wind platforms is one of the major problems associated with this new form of clean energy generation. At present, there are no scaled studies carried out analyzing the mechanical and deformational behavior of both the material of the pile supporting the engine (large steel hollow piles with a diameter of 8 m and a thickness of 15–20 cm) and the soil where the pile is driven. Usually, these elements are installed on sands with a very small grain size displaced from the limits of dry–wet beach (water limit) toward the offshore limits, which prevents them from returning to their previous location in a natural way. This paper presents results obtained from scale tests in a steel pool to analyze the behavior of the sand where the piles were installed. First, the California Bearing Ratio (CBR) test was carried out to estimate the soil behavior in similar conditions to the steel pool. The scale tests consisted of the penetration of the steel tube into the sand using a hydraulic press. The objective was to compare the results for three tubes with different diameters, three different speeds, and two kinds of ending on the extreme of the tested element.


2021 ◽  
Vol 11 (2) ◽  
pp. 6970-6973
Author(s):  
K. A. Samo ◽  
M. U. Keerio ◽  
S. A. Shaikh ◽  
A. R. H. Rigit ◽  
K. C. Mukwana

Electricity generation from the sea has many advantages in comparison with other renewable energy resources. Power can be generated from new or existing barrages. Based on previous location research, a suitable system to produce tidal range energy from a potential site was developed in this paper. The main objective of this research is to calculate the energy output of the Kuching Barrage of Sarawak State of Malaysia. The daily flushing process of Kuching Barrage is conducted during the low tide period and therefore to put up the ebb generation process is appropriate. The calculated period of power generation is determined to about 6 hours. The annual energy output is calculated based on a theoretical method, with the average daily potential energy calculated to be 5.8MW and approximately 10.23GWh/year could be harnessed. This research can be beneficial for energy generation with the use of a double basin scheme for the construction of new barrages in East Malaysia.


2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Junhang Bai ◽  
Yongliang Sun ◽  
Weixiao Meng ◽  
Cheng Li

In recent years, deep learning has been used for Wi-Fi fingerprint-based localization to achieve a remarkable performance, which is expected to satisfy the increasing requirements of indoor location-based service (LBS). In this paper, we propose a Wi-Fi fingerprint-based indoor mobile user localization method that integrates a stacked improved sparse autoencoder (SISAE) and a recurrent neural network (RNN). We improve the sparse autoencoder by adding an activity penalty term in its loss function to control the neuron outputs in the hidden layer. The encoders of three improved sparse autoencoders are stacked to obtain high-level feature representations of received signal strength (RSS) vectors, and an SISAE is constructed for localization by adding a logistic regression layer as the output layer to the stacked encoders. Meanwhile, using the previous location coordinates computed by the trained SISAE as extra inputs, an RNN is employed to compute more accurate current location coordinates for mobile users. The experimental results demonstrate that the mean error of the proposed SISAE-RNN for mobile user localization can be reduced to 1.60 m.


Animals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1314
Author(s):  
Jessica E. Monk ◽  
Caroline Lee ◽  
Emily Dickson ◽  
Dana L. M. Campbell

An attention bias test has been developed as a measure of negative affective states in sheep. The test measures an individual’s allocation of attention between a threatening (previous location of a dog) and positive (conspecific photo) stimulus over a 3 min period. This study replicated a previously inconclusive study, to determine whether the test could assess positive affective states under more controlled conditions and with a younger population of animals. Pharmacological treatments were used to induce anxious, calm, happy, and control affective states prior to entering the attention bias test arena (n = 20/treatment). We hypothesized that sheep in positive and negative affective states could be differentiated using key measures of attention during testing, including vigilance (head at or above shoulder height) and duration looking towards the valenced stimuli. Anxious sheep were more vigilant than control animals during attention bias testing as predicted (linear mixed effects model, p = 0.002), but the positive groups did not differ from controls (p > 0.05). There was no effect of treatment on looking behaviors (p > 0.05). We suggest this attention bias test paradigm can assess negative but not positive affect in sheep and that modifications to the ethogram or stimuli are needed to more clearly characterize the direction of attention during testing.


2020 ◽  
Vol 34 (07) ◽  
pp. 12541-12548
Author(s):  
Yi Xu ◽  
Jing Yang ◽  
Shaoyi Du

Pedestrian trajectory prediction is an important but difficult task in self-driving or autonomous mobile robot field because there are complex unpredictable human-human interactions in crowded scenarios. There have been a large number of studies that attempt to understand humans' social behavior. However, most of these studies extract location features from previous one time step while neglecting the vital velocity features. In order to address this issue, we propose a novel feature-cascaded framework for long short-term network (CF-LSTM) without extra artificial settings or social rules. In this framework, feature information from previous two time steps are firstly extracted and then integrated as a cascaded feature to LSTM, which is able to capture the previous location information and dynamic velocity information, simultaneously. In addition, this scene-agnostic cascaded feature is the external manifestation of complex human-human interactions, which can also effectively capture dynamic interaction information in different scenes without any other pedestrians' information. Experiments on public benchmark datasets indicate that our model achieves better performance than the state-of-the-art methods and this feature-cascaded framework has the ability to implicitly learn human-human interactions.


Author(s):  
Marianna Bressan

Altino is a rural village near close to the Venice Lagoon in the North-East of Italy. During the Iron Age, the ancient Veneti built here an important town which was connected to the hinterland both by riverways and by overland, and to the Adriatic sea by the Lagoon. In the Roman age, this town grew and developed its market role. A Museum, two archaeological sites and the previous location of the museum with its full warehouse witness nowadays that brilliant past. The paper discusses the current management of these sites and suggests to re-think them and the wide archaeological underground area as a single site, identified by the institute as the ‘archaeological park’.


Author(s):  
Francesca Arrigo ◽  
Desmond J. Higham ◽  
Vanni Noferini

Walks around a graph are studied in a wide range of fields, from graph theory and stochastic analysis to theoretical computer science and physics. In many cases it is of interest to focus on non-backtracking walks; those that do not immediately revisit their previous location. In the network science context, imposing a non-backtracking constraint on traditional walk-based node centrality measures is known to offer tangible benefits. Here, we use the Hashimoto matrix construction to characterize, generalize and study such non-backtracking centrality measures. We then devise a recursive extension that systematically removes triangles, squares and, generally, all cycles up to a given length. By characterizing the spectral radius of appropriate matrix power series, we explore how the universality results on the limiting behaviour of classical walk-based centrality measures extend to these non-cycling cases. We also demonstrate that the new recursive construction gives rise to practical centrality measures that can be applied to large-scale networks.


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