scholarly journals DualFace: Two-stage drawing guidance for freehand portrait sketching

2021 ◽  
Vol 8 (1) ◽  
pp. 63-77
Author(s):  
Zhengyu Huang ◽  
Yichen Peng ◽  
Tomohiro Hibino ◽  
Chunqi Zhao ◽  
Haoran Xie ◽  
...  
Keyword(s):  
User Study ◽  
High Quality ◽  
Contour Lines ◽  
Global Guidance ◽  
Face Contour ◽  
Artistic Training ◽  
Portrait Drawing ◽  
Two Stages ◽  
Global And Local ◽  
Different Levels

AbstractSpecial skills are required in portrait painting, such as imagining geometric structures and facial detail for final portrait designs. This makes it a difficult task for users, especially novices without prior artistic training, to draw freehand portraits with high-quality details. In this paper, we propose dualFace, a portrait drawing interface to assist users with different levels of drawing skills to complete recognizable and authentic face sketches. Inspired by traditional artist workflows for portrait drawing, dualFace gives two-stages of drawing assistance to provide global and local visual guidance. The former helps users draw contour lines for portraits (i.e., geometric structure), and the latter helps users draw details of facial parts, which conform to the user-drawn contour lines. In the global guidance stage, the user draws several contour lines, and dualFace then searches for several relevant images from an internal database and displays the suggested face contour lines on the background of the canvas. In the local guidance stage, we synthesize detailed portrait images with a deep generative model from user-drawn contour lines, and then use the synthesized results as detailed drawing guidance. We conducted a user study to verify the effectiveness of dualFace, which confirms that dualFace significantly helps users to produce a detailed portrait sketch.

scholarly journals Duplication in the formation of median nerve - a case report

2015 ◽  
Vol 04 (01) ◽  
pp. 043-045
Author(s):  
Gyata Mehta ◽  
Varsha Mokhasi
Keyword(s):  
Case Report ◽  
Median Nerve ◽  
Lateral Root ◽  
Axillary Artery ◽  
Anatomical Variations ◽  
Upper Arm ◽  
Present Case Report ◽  
Lateral Cord ◽  
Two Stages ◽  
Different Levels

AbstractThe median nerve is formed in the axilla by fusion of the two roots from the lateral and medial cords. The present case report describes an anomalous presentation of double formation of median nerve and its relation with axillary and brachial arteries. The median nerve was formed in two stages at different levels, first in the axilla and then in the upper arm by receiving double contribution from the lateral root of the lateral cord, which fuse with the medial root of the medial cord to form the median nerve. The formation took place medial to the axillary artery in the axilla and antero-medial to the brachial artery in the arm. Such anatomical variations and their relation with the arteries are important for the surgeons and anesthesiologists and of great academic interest to the anatomists.

scholarly journals Volumetric shrinkage and shape of Conilon coffee fruit (Coffea Canephora)

2014 ◽  
Vol 2 (1) ◽  
pp. 73
Author(s):  
Pedro Casanova ◽  
Paulo C Corrêa ◽  
Kattia Solís
Keyword(s):  
Water Content ◽  
Fruit Size ◽  
Nonlinear Behavior ◽  
Coffea Canephora ◽  
Volumetric Shrinkage ◽  
Drying Process ◽  
Volume Increase ◽  
Two Stages ◽  
Different Levels ◽  
Area And Volume

The effect of varying the water content was evaluated in shrinkage, dimensional characteristics and shape of the fruits of coffee during drying. Fruits were used Conilon coffee (Coffea canephora), clone 83 of clonal variety EMCAPA 8141. The fruit was hand-picked and selected only the two stages, cherry and unripe. Different batches of coffee were dried in an oven with forced ventilation with air temperature of approximately 60 ± 3 °C until different levels of water content. Fruit size was determined by varying the volume and shape was examined by sphericity and roundness. The shrinkage of the fruits was determined by the ratio between the volume at each water content and initial volume. It was determined that the projected area, surface area and volume increase with increasing water content for conilon coffee fruit. The shape of the conilon coffee fruits was influenced during the drying process, promoting the decrease of sphericity and roundness values from the reduction of water content. The shrinkage showed a nonlinear behavior with decreasing reducing the water content of the mass of Conilon coffee fruit. The polynomial model represented satisfactorily phenomenon of unit volumetric shrinkage and mass of coffee fruits depending on the water content.

scholarly journals Institutions, Norms, and Accountability: A Corruption Experiment with Northern and Southern Italians

2017 ◽  
Vol 5 (1) ◽  
pp. 11-25 ◽  
Author(s):  
Nan Zhang
Keyword(s):  
Laboratory Experiment ◽  
Everyday Life ◽  
Institutional Environments ◽  
High Quality ◽  
Group I ◽  
Two Populations ◽  
Different Levels ◽  
Quality Enforcement

AbstractAnti-corruption research has highlighted the potential for grassroots monitoring to improve governance outcomes, but the conditions under which citizens are willing to report bribery remain under-studied. Are individuals from some societies socialized into a “culture of corruption” that makes them more accepting of malfeasance, or is the failure to denounce wrongdoing simply a response to low-quality enforcement institutions? I conduct a laboratory experiment to examine how the propensity to report corruption differs between Northern and Southern Italians, two populations experiencing different levels of corruption in everyday life. For each group, I experimentally manipulate the quality of enforcement institutions. When given high-quality institutions, all participants are more willing to report corruption. Moreover, Southerners and Northerners behave similarly when placed within the same institutional environments. These results suggest that high-corruption societies are not “culturally” predisposed to tolerate malfeasance. Rather, improving the capacity of enforcement institutions may significantly strengthen accountability norms.

scholarly journals Depression and anxiety in individuals with amyotrophic lateral sclerosis: a systematic review

2016 ◽  
Vol 38 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Tatiana Lins Carvalho ◽  
Lilian Maria Sanguinett de Almeida ◽  
Camila Maria Araújo Lorega ◽  
Mirella Francyne Oliveira Barata ◽  
Maria Lúcia Brito Ferreira ◽  
...  
Keyword(s):  
Systematic Review ◽  
Amyotrophic Lateral Sclerosis ◽  
Depressive Disorders ◽  
Depression And Anxiety ◽  
Inclusion Criteria ◽  
Eligibility Criteria ◽  
Symptoms Of Depression ◽  
Two Stages ◽  
Different Levels ◽  
Lateral Sclerosis

Introduction Studies assessing symptoms of depression and anxiety in individuals with amyotrophic lateral sclerosis (ALS) have reported contradictory results. The objective of this systematic review is to identify the prevalence of these mood disorders in the literature. Methods We searched the PubMed, HighWire, MEDLINE, SciELO, LILACS and ScienceDirect databases. Literature was selected for review in two stages, according to eligibility criteria. The first stage involved searching databases and checking titles and abstracts. The second step consisted of reading complete articles and excluding those that did not meet the inclusion criteria. The inclusion criteria were articles written in Portuguese, English or Spanish, published in the last five years and involving people with ALS diagnosed according to the El Escorial criteria. Results The database searches returned a total of 1,135 titles and abstracts and then 1,117 of these were excluded. Eighteen articles were selected for review. The 12-item Amyotrophic Lateral Sclerosis Depression Inventory (ADI-12) was the only instrument designed specifically to assess depression in ALS, but it was only used in three studies. No instruments specifically designed for anxiety in ALS were used. A large number of studies found presence and slight increase of anxiety disorders. There was considerable large variation in the results related to depressive disorders, ranging from moderate depression to an absence of symptoms. Conclusions Patients with ALS may exhibit symptoms of depression and anxiety at different levels, but there is a need for studies using specific instruments with larger samples in order to ascertain the prevalence of symptoms in ALS and the factors associated with it.

Language of Modern Advertising

2019 ◽  
pp. 170-174
Author(s):  
Iryna Kolesnikova
Keyword(s):  
Professional Communication ◽  
Literary Language ◽  
Place Names ◽  
High Quality ◽  
Foreign Origin ◽  
Professional Occupation ◽  
Different Levels

Professional language is a universal tool of specialists’ communication. Every professional language has its specificity at different levels. They are terminology, genre features of texts, ethics of professional communication etc. However, none of these languages can be an antagonist of literary language. Violation of the standards of literary language, intellectual imbalance between the advertiser’s IQ and the consumer, the existence of negative connotations and emotions, failure to reach advertiser’s intentions; unsuccessful linguistic design of advertising product, violation of ethics of communication with the client; failed branding; inappropriate neologisms; wrong semantics towards words of foreign origin, famous to place names, onyms, dubious creativity are typical features of language. The specialist in language of advertising (“lingvoreklamist”) is an expert in the language of copywriting. His professional occupation allows not only to make professional re-branding and to find both linguistic and intellectual mistakes in an advertising text, but also to find a name for the company or institution according to their specialty. It means that he work as trouble-shooter in order to make advertising product of high quality.

scholarly journals Sketch-Based Spatial Queries for the Retrieval of Human Locomotion Patterns in Smart Environments

2009 ◽  
Vol 2009 ◽  
pp. 1-13 ◽  
Author(s):  
Gamhewage C. de Silva ◽  
Toshihiko Yamasaki ◽  
Kiyoharu Aizawa
Keyword(s):  
User Study ◽  
Real Life ◽  
User Interaction ◽  
Human Locomotion ◽  
Search Algorithms ◽  
Initial System ◽  
Valuable Insight ◽  
Spatial Queries ◽  
Two Stages ◽  
Interaction Strategy

A system for retrieving video sequences created by tracking humans in a smart environment, by using spatial queries, is presented. Sketches made with a pointing device on the floor layout of the environment are used to form queries corresponding to locomotion patterns. The sketches are analyzed to identify the type of the query. Directional search algorithms based on the minimum distance between points are applied for finding the best matches to the sketch. The results are ranked according to the similarity and presented to the user. The system was developed in two stages. An initial version of the system was implemented and evaluated by conducting a user study. Modifications were made where appropriate, according to the results and the feedback, to make the system more accurate and usable. We present the details of the initial system, the user study and the results, and the modifications thus made. The overall accuracy of retrieval for the initial system was approximately 93%, when tested on a collection of data from a real-life experiment. This is improved to approximately 97% after the modifications. The user interaction strategy and the search algorithms are usable in any environment for automated retrieval of locomotion patterns. The subjects who evaluated the system found it easy to learn and use. Their comments included several prospective applications for the user interaction strategy, providing valuable insight for future directions.

Graph Visualization Styles for Use in Configuration Management: A User Study

2015 ◽  
Author(s):  
Keith Phelan ◽  
Crystal Wilson ◽  
Joshua D. Summers ◽  
Mary E. Kurz
Keyword(s):  
Change Management ◽  
User Study ◽  
Data Representation ◽  
The Other ◽  
Visualization Tool ◽  
Graph Visualization ◽  
Response Accuracy ◽  
Configuration Change ◽  
Computer Based ◽  
Different Levels

The purpose of this research is to conduct a user study in order to determine the effect of numerous variables for data representation on the ability to answer questions about the system being represented. This research will be used in the development of a computer-based visualization tool to support configuration change management. The researchers hypothesized that the graph geometry and order of the questions being asked would not affect the results, while the color of the graph and the information being represented would affect the number of correct responses. The results showed an increase in the response accuracy for the answerable questions when the amount of information displayed in the data representation was minimized. On the other hand, none of the other factors showed to have a significant effect on the accuracy of the responses. The most significant limitation in this study was the possibility for different users putting different levels of effort into answering the questions.

scholarly journals Assessing Drivers’ Physiological Responses Using Consumer Grade Devices

2019 ◽  
Vol 9 (24) ◽  
pp. 5353 ◽  
Author(s):  
Timotej Gruden ◽  
Kristina Stojmenova ◽  
Jaka Sodnik ◽  
Grega Jakus
Keyword(s):  
Standard Deviation ◽  
User Interfaces ◽  
User Study ◽  
Physiological Responses ◽  
Wearable Devices ◽  
Mean Value ◽  
Driver Assistance Systems ◽  
Ecg Signals ◽  
Driving Scenario ◽  
Different Levels

The ability to measure drivers’ physiological responses is important for understanding their state and behavior under different driving conditions. Such measurements can be used in the development of novel user interfaces, driver profiling, advanced driver assistance systems, etc. In this paper, we present a user study in which we performed an evaluation of two commercially available wearable devices for assessment of drivers’ physiological signals. Empatica’s E4 wristband measures blood volume pulse (BVP), inter-beat interval (IBI), galvanic skin response (GSR), temperature, and acceleration. Bittium’s Faros 360 is an electrocardiographic (ECG) device that can record up to 3-channel ECG signals. The aim of this study was to explore the use of such devices in a dynamic driving environment and their ability to differentiate between different levels of driving demand. Twenty-two participants (eight female, 14 male) aged between 18 and 45 years old participated in the study. The experiment compared three phases: Baseline (no driving), easy driving scenario, and demanding driving scenario. Mean and median heart rate variability (HRV), standard deviation of R–R intervals (SDNN), HRV variables for shorter time frames (standard deviation of the average R–R intervals over a shorter period—SDANN and mean value of the standard deviations calculated over a shorter period—SDNN index), HRV variables based on successive differences (root mean square of successive differences—RMSSD and percentage of successive differences, greater than 50 ms—pNN50), skin temperature, and GSR were observed in each phase. The results showed that motion artefacts due to driving affect the GSR recordings, which may limit the use of wrist-based wearable devices in a driving environment. In this case, due to the limitations of the photoplethysmography (PPG) sensor, E4 only showed differences between non-driving and driving phases but could not differentiate between different levels of driving demand. On the other hand, the results obtained from the ECG signals from Faros 360 showed statistically significant differences also between the two levels of driving demand.

Target Acquisition in Cluttered Environments

1992 ◽  
Vol 36 (18) ◽  
pp. 1425-1429 ◽  
Author(s):  
Deborah P. Birkmire ◽  
Robert Karsh ◽  
B. Diane Barnette ◽  
Ramakrishna Pillalamarri
Keyword(s):  
Target Acquisition ◽  
Regression Analyses ◽  
Cluttered Environments ◽  
Video Images ◽  
Detection Probabilities ◽  
Visual Clutter ◽  
Relationship Of ◽  
Global And Local ◽  
The Relationship ◽  
Different Levels

The relationship of human target acquisition times and detection probabilities to electronically measured visual clutter was investigated. Ninety computer-generated scenes simulating infrared imagery and containing different levels of clutter and zero, one, two, or three targets were produced. Targets were embedded in these scenes counterbalancing for range and position. Global and local clutter were measured using both statistical variance and probability of edge metrics. Thirty-three aviators, tankers, and infantry soldiers were shown still-video images of the 90 scenes and were instructed to search for targets. Analyses indicate differences between the aviators and tankers in search times and types of errors. Results of multiple regression analyses of global clutter, local clutter, range, target dimension, target complexity, number of targets, and experience on search times are given and discussed in terms search strategies.

Seric and hepatic NTPDase and 5′ nucleotidase activities of rats experimentally infected byFasciola hepatica

Parasitology ◽  
2016 ◽  
Vol 143 (5) ◽  
pp. 551-556 ◽  
Author(s):  
PEDRO H. DOLESKI ◽  
RICARDO E. MENDES ◽  
DANIELA B. R. LEAL ◽  
NATHIELI B. BOTTARI ◽  
MANOELA M. PIVA ◽  
...  
Keyword(s):  
Immune Response ◽  
Fasciola Hepatica ◽  
Adenine Nucleotides ◽  
Liver Homogenate ◽  
Hepatic Tissue ◽  
Control Group ◽  
Th2 Immune Response ◽  
Nucleotide Degradation ◽  
Two Stages ◽  
Different Levels

SUMMARYThe enzymatic activities of NTPDase and 5′nucleotidase are important to regulate the concentration of adenine nucleotides, known molecules involved in many physiological functions. Therefore, the objective of this study was to evaluate the activity of NTPDase and 5′nucleotidase in serum and liver tissue of rats infected byFasciola hepatica. Rats were divided into two groups: uninfected control and infected. NTPDase activity for adenosine triphosphate (ATP) and ADP substrates in the liver was higher compared with the control group at 15 days post-infection (PI), while seric activity was lower. In addition, seric and hepatic samples did not show changes for 5′nucleotidase activity at this time. On the other hand, either NTPDase or 5′nucleotidase activities in liver homogenate and serum were higher at 87 days PI. Early in the infection, low NTPDase activity maintains an increase of ATP in the bloodstream in order to activate host immune response, while in hepatic tissue it decreases extracellular ATP to maintain a low inflammatory response in the tissue. As stated, higher NTPDase and 5′nucleotidase activities 87 days after infection in serum and tissue, probably results on an increased concentration of adenosine molecule which stimulates a Th2 immune response. Thus, it is possible to conclude thatF. hepaticainfections lead to different levels of nucleotide degradation when considering the two stages of infection studied, which influences the inflammatory and pathological processes developed by the purinergic system.

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