Effects of Interactions Among Alloying Elements on the Microstructure, Phase Transitions, and Electrical Resistivity of the Cu81Al19 Alloy

R. D. A. Pinto,L. D. R. Ferreira,R. A. G. Silva 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.8

Cu–Al alloys have been used for marine applications due to their corrosion resistance and smart materials based on the shapememory effect. A technological tendency for Cu–Al alloys is the development of increasingly complex formulations, althoughthe role of alloying elements still unclear in comparison to other metallurgical systems, such as steels. In the present study,2 at% Cu were substituted by equal quantities of Ni and Ga in the Cu81Al19alloy, which are elements from the same periodand similar in size to the Cu atom. The obtained alloys were analyzed by several characterization techniques. The resultsshowed that the Ni addition increases the critical temperatures and decreases the microhardness values. The Ga additionhas the opposite effect. Both alloying elements produce new phases in the microstructures, hamper the α phase ordering,accelerate the β phase decomposition, and increase the conductivity of the Cu81Al19alloy. From this study, it is possible torealize that small changes in atomic features (electronic structure, atomic radius, valence, electronegativity) from a portionof atoms are enough to obtain distinctive materials, which turns the design of new Cu–Al alloys and the prediction of theirproperties a challenging task.

Sentinel Lymph Node Navigation Surgery for Early Gastric Cancer: Is It a Safe Procedure in Countries with Non- Endemic Gastric Cancer Levels? A Preliminary Experience

Guilherme Pinto Bravo Neto,Elizabeth Gomes Dos Santos,Felipe Carvalho Victer,Marcelo Soares Neves,Carlos Eduardo De Souza Carvalho,Marcia Ferreira Pinto 대한위암학회 2016 Journal of gastric cancer Vol.16 No.1

Purpose: Early diagnosis of gastric cancer is still the exception in Western countries. In the East, as in Japan and Korea, this disease is an endemic disorder. More conservative surgical procedures are frequently performed in early gastric cancer cases in these countries where sentinel lymph node navigation surgery is becoming a safe option for some patients. This study aims to evaluate preliminary outcomes of patients with early gastric cancer who underwent sentinel node navigation surgeries in Brazil, a country with non-endemic gastric cancer levels. Materials and Methods: From September 2008 to March 2014, 14 out of 205 gastric cancer patients underwent sentinel lymph node navigation surgeries, which were performed using intraoperative, endoscopic, and peritumoral injection of patent blue dye. Results: Antrectomies with Billroth I gastroduodenostomies were performed in seven patients with distal tumors. The other seven patients underwent wedge resections. Sentinel basin resections were performed in four patients, and lymphadenectomies were extended to stations 7, 8, and 9 in the other 10. Two patients received false-negative results from sentinel node biopsies, and one of those patients had micrometastasis. There was one postoperative death from liver failure in a cirrhotic patient. Another cirrhotic patient died after two years without recurrence of gastric cancer, also from liver failure. All other patients were followed-up for 13 to 79 months with no evidence of recurrence. Conclusions: Sentinel lymph node navigation surgery appears to be a safe procedure in a country with non-endemic levels of gastric cancer.

Sentinel Lymph Node Navigation Surgery for Early Gastric Cancer: Is It a Safe Procedure in Countries with Non-Endemic Gastric Cancer Levels? A Preliminary Experience

Neto, Guilherme Pinto Bravo,Santos, Elizabeth Gomes Dos,Victer, Felipe Carvalho,Neves, Marcelo Soares,Pinto, Marcia Ferreira,Carvalho, Carlos Eduardo De Souza The Korean Gastric Cancer Association 2016 Journal of gastric cancer Vol.16 No.1

Purpose: Early diagnosis of gastric cancer is still the exception in Western countries. In the East, as in Japan and Korea, this disease is an endemic disorder. More conservative surgical procedures are frequently performed in early gastric cancer cases in these countries where sentinel lymph node navigation surgery is becoming a safe option for some patients. This study aims to evaluate preliminary outcomes of patients with early gastric cancer who underwent sentinel node navigation surgeries in Brazil, a country with non-endemic gastric cancer levels. Materials and Methods: From September 2008 to March 2014, 14 out of 205 gastric cancer patients underwent sentinel lymph node navigation surgeries, which were performed using intraoperative, endoscopic, and peritumoral injection of patent blue dye. Results: Antrectomies with Billroth I gastroduodenostomies were performed in seven patients with distal tumors. The other seven patients underwent wedge resections. Sentinel basin resections were performed in four patients, and lymphadenectomies were extended to stations 7, 8, and 9 in the other 10. Two patients received false-negative results from sentinel node biopsies, and one of those patients had micrometastasis. There was one postoperative death from liver failure in a cirrhotic patient. Another cirrhotic patient died after two years without recurrence of gastric cancer, also from liver failure. All other patients were followed-up for 13 to 79 months with no evidence of recurrence. Conclusions: Sentinel lymph node navigation surgery appears to be a safe procedure in a country with non-endemic levels of gastric cancer.

Evaluation of Antihyperglycemia and Antihypertension Potential of Native Peruvian Fruits Using In Vitro Models

Pinto, Marcia Da Silva,Ranilla, Lena Galvez,Apostolidis, Emmanouil,Lajolo, Franco Maria,Genovese, Maria Ines,Shetty, Kalidas The Korean Society of Food Science and Nutrition 2009 Journal of medicinal food Vol.12 No.2

Local food diversity and traditional crops are essential for cost-effective management of the global epidemic of type 2 diabetes and associated complications of hypertension. Water and 12% ethanol extracts of native Peruvian fruits such as Lucuma (Pouteria lucuma), Pacae (Inga feuille), Papayita arequipe$\tilde{n}$a (Carica pubescens), Capuli (Prunus capuli), Aguaymanto (Physalis peruviana), and Algarrobo (Prosopis pallida) were evaluated for total phenolics, antioxidant activity based on 2, 2-diphenyl-1-picrylhydrazyl radical scavenging assay, and functionality such as in vitro inhibition of $\alpha$-amylase, $\alpha$-glucosidase, and angiotensin I-converting enzyme (ACE) relevant for potential management of hyperglycemia and hypertension linked to type 2 diabetes. The total phenolic content ranged from 3.2 (Aguaymanto) to 11.4 (Lucuma fruit) mg/g of sample dry weight. A significant positive correlation was found between total phenolic content and antioxidant activity for the ethanolic extracts. No phenolic compound was detected in Lucuma (fruit and powder) and Pacae. Aqueous extracts from Lucuma and Algarrobo had the highest $\alpha$-glucosidase inhibitory activities. Papayita arequipe$\tilde{n}$a and Algarrobo had significant ACE inhibitory activities reflecting antihypertensive potential. These in vitro results point to the excellent potential of Peruvian fruits for food-based strategies for complementing effective antidiabetes and antihypertension solutions based on further animal and clinical studies.

Improved Decoupled Control and Islanding Detection of Inverter-Based Distribution in Multibus Microgrid Systems

Pinto, Smitha Joyce,Panda, Gayadhar The Korean Institute of Power Electronics 2016 JOURNAL OF POWER ELECTRONICS Vol.16 No.4

This work mainly discusses an accurate and fast islanding detection based on fractional wavelet packet transform (FRWPT)for multibus microgrid systems. The proposed protection scheme uses combined desirable features retrieved from discrete fractional Fourier transform (FRFT) and wavelet packet transform (WPT) techniques, which provides precise time-frequency information on minute perturbation signals introduced in the system. Moreover, this study focuses on the design of decoupling control with a distributed controller based on state feedback for the efficient operation of microgrid systems that are transitioning from the grid-connected mode to the islanded mode. An IEEE 9-bus test system with inverter based distributed generation (DG) units is considered for islanding assessment and smooth operation. Finally, tracking errors are greatly reduced with stability improvement based on the proposed controller. FRWPT based islanding detection is demonstrated via a time domain simulation of the system. Simulated results show an improvement in system stability with the application of the proposed controller and accurate islanding detection based on the FRWPT technique in comparison with the results obtained by applying the wavelet transform (WT) and WPT.

Can a spontaneous smile invalidate facial identification by photo-anthropometry?

Pinto, Paulo Henrique Viana,Rodrigues, Caio Henrique Pinke,Rozatto, Juliana Rodrigues,da Silva, Ana Maria Bettoni Rodrigues,Bruni, Aline Thais,da Silva, Marco Antonio Moreira Rodrigues,da Silva, Ricar Korean Academy of Oral and Maxillofacial Radiology 2021 Imaging Science in Dentistry Vol.51 No.3

Purpose: Using images in the facial image comparison process poses a challenge for forensic experts due to limitations such as the presence of facial expressions. The aims of this study were to analyze how morphometric changes in the face during a spontaneous smile influence the facial image comparison process and to evaluate the reproducibility of measurements obtained by digital stereophotogrammetry in these situations. Materials and Methods: Three examiners used digital stereophotogrammetry to obtain 3-dimensional images of the faces of 10 female participants(aged between 23 and 45 years). Photographs of the participants' faces were captured with their faces at rest (group 1) and with a spontaneous smile (group 2), resulting in a total of 60 3-dimensional images. The digital stereophotogrammetry device obtained the images with a 3.5-ms capture time, which prevented undesirable movements of the participants. Linear measurements between facial landmarks were made, in units of millimeters, and the data were subjected to multivariate and univariate statistical analyses using Pirouette^® version 4.5 (InfoMetrix Inc., Woodinville, WA, USA) and Microsoft Excel^® (Microsoft Corp., Redmond, WA, USA), respectively. Results: The measurements that most strongly influenced the separation of the groups were related to the labial/buccal region. In general, the data showed low standard deviations, which differed by less than 10% from the measured mean values, demonstrating that the digital stereophotogrammetry technique was reproducible. Conclusion: The impact of spontaneous smiles on the facial image comparison process should be considered, and digital stereophotogrammetry provided good reproducibility.

TOURIST ENGAGEMENT AND THE IDENTIFICATION WITH THE BRAND OF DESTINATION: THE CASE OF (RE)VISITING THE CITY OF PORTO

Ana Pinto Borges,Elvira Vieira,Paula Rodrigues 글로벌지식마케팅경영학회 2018 Global Marketing Conference Vol.2018 No.07

We evaluate the loyalty of a tourist destination considering tangible and intangible factors using the city of Porto as a case study. We observed that the main dimensions that the tourists associate with the visit and consequently with the city, in order of importance, were: i) engagement with the city of Porto, ii) identification with city of Porto, iii) Corporate Social Responsibility (CSR) of the city of Porto, iv) experiences in the city of Porto, and v) having visited visiting the city of Porto. Direct interviews were administered in the main tourist’s points in the city during the month of October 2017. The survey was only applied to the respondents who pursued tourism in the city of Porto, with 958 valid questionnaires. The questionnaire included the sociodemographic characteristics of the respondents, the evaluation of level of importance of the eleven factors related to the trip, the level of agreement with the eight statements on the engagement with Porto developed by Sprott et al. (2009) – applied for the first time to a destination - and, in the final part, the evaluation of the intention to return to city of Porto. The eleven statements related to the importance of various factors associated to the trip and the eight statements that evaluate the engagement with the city were subjected to a principal components analysis with varimax rotation in order to identify the main dimensions. A logistic regression was used to explore the determinants of the likelihood to return to Porto considering the respondents’ sociodemographic variables and the main dimensions obtained in the factorial analysis (related to the important factors on the trip and the engagement with the city). Regarding the intention to return, which is the proxy of tourists’ loyalty to the destination, we observed that it is positively influenced by the engagement with the city, the tourist’s perception of CSR, the good experience in the city and having visited the city. These results connect the political, economic and marketing objectives in the tourism sector. The goals need to be aligned and the stakeholders(visitors, local residents and business, public bodies and government) must work together to maintain a solid and unified destination image. Considering that the city of Porto has been in the spotlight at an international level as one of the top cities’ destinations, this kind of information is fundamental for Porto to continue to be an attractive city tourism destination.

EXPLORING HOW BRANDS CREATE AND MAINTAIN ONLINE RELATIONSHIPS THROUGH THEIR WEBSITES, FACEBOOK AND INSTAGRAM BRAND PAGES

Luisa Pinto,Sandra Maria Correia Loureiro,Paulo Rita,Eduardo Moraes Sarmento 글로벌지식마케팅경영학회 2018 Global Marketing Conference Vol.2018 No.07

Introduction In the context of online interactions, social media has becoming a crucial part of people‟s everyday lives, where they converge to exchange, debate, communicate and participate in any form of social interaction (Ryan & Jones, 2009). They post and share new content but also review and rate products/services and/or brands, share experiences and expertise and exchange opinions (Ryan & Jones, 2009). As a result, the growing popularity of social media, the competitors‟ presence on social networking sites and the cost reduction pressure derived from the financial crisis and consequent necessity to find cheaper solutions for brand promotion, motivated companies to use social media as part of their marketing and brand building activities (Tsimonis & Dimitriadis, 2014) and to create brand fan pages in different social networks such as Facebook, Instagram, Twitter, and YouTube, among others. Due to this attractiveness, social media is becoming the media channel of choice across the world (Dong-Hun, 2010). However, traditional media still plays an important role for both consumers and marketers, being a central component of brands‟ communication strategies. Yet, several questions still remain unanswered regarding social media effectiveness and influence on consumer engagement. In the current study we intend that we intend to contribute to fulfil the second. Thus, the objective of the current study is to explore how brands create and maintain online relationships with consumers through their Websites, Facebook and Instagram brand pages . Theoretical development The concept of engagement was originally employed in different fields of study including psychology, sociology and organizational behaviour. Now is attracting marketers‟ attention especially in the field of relationship marketing (e.g., Brodie et al., 2011; Hollebeek, 2011). Accordingly, two central concepts consumer engagement and online brand engagement need to be defined. First, consumer engagement, refers to the intensity of a person‟s participation and connection with company‟s offerings and activities that can be initiated by the consumer or the organization (Vivek, Beatty, & Morgan, 2012). Online brand engagement, on the other hand, can be defined as a consumer‟s cognitive and affective commitment to partake in an active relationship with a brand on a website or other computer-mediated platform designed to communicate brand value (Mollen & Wilson, 2010). Online brand engagement measures how much and how frequently users interact with a firm‟s page and its social media content. When consumers make the effort to like, favourite or comment a brand‟s post, they are vigorously engaging with that content. Engagement metrics display audience action, an important feature for social media health and growth (Dunham, 2014). As social media provides numerous ways for users to get involved with organizations (Waters, Burnett, Lamm, & Lucas, 2009), marketers must find rightful strategies to nurture relationships with the public. Dialogue has been one of the topics under research by several scholars. Including this two-way form of communication is crucial to “understand how organizations can build relationships that serve both organizational and public interests” (Kent & Taylor, 2002: 21), thus several studies use dialogic communication to investigate the influence of online strategies for relationship building (Loureiro & Gomes, 2016). Three crucial strategies have been used in numerous studies (Waters et al., 2009; Loureiro & Gomes, 2016; Men & Tsai, 2012) to build and maintain relationships online: disclosure or openness, information dissemination, and interactivity and involvement. First, disclosure or openness refers to the companies‟ willingness to be transparent in their online communication activities. Waters et al. (2009) suggest that companies must provide information such as company‟s full description, its history and mission. Organizations should use hyperlinks connected to their websites and use logos and visual cues to enhance brand recognition. Information dissemination concerns posting photos and videos, announcements about products, as well as answering questions to address stakeholders‟ needs, concerns and interests (Men & Tsai, 2012; Loureiro & Gomes, 2016). Posting links to external news content related to the company and its business and including press releases and campaign summaries can maximize the impact of a company‟s online presence (Waters et al., 2009). Finally, interactivity and involvement can be seen as the most important strategy, out of the three, since it is essential to foster relationships with the public and represents one of the main advantages of using different social media platforms (Haigh, 2014). This strategy is often analysed as a whole, with no distinction between the two terms (Men & Tsai, 2012; Loureiro & Gomes, 2016) however, interactivity can be analysed separately from involvement according to research done by Haigh (2014). Involvement regards connecting with consumers. Providing information such as organizational contacts, giving users the ability to stay in touch with the company is one way to involve them. Interactivity, on the other hand, is often defined as “the extent to which users can participate in modifying the form and content of the mediated environment in real time.” (Steuer, 1992: 84). When considering computer-mediated environments, Liu (2003) also studied interactivity, developing a scale to measure interactivity on websites. According to the study, interactivity should be defined as the degree to which two or more communication parties can act on each other, on the communication medium, and on the messages and the degree to which such influences are synchronized” (Liu & Shrum, 2002: 54) and three dimensions should be included when discussing this topic: active control, two-way communication and synchronicity. Active control regards users‟ capacity to voluntarily participate and usefully influence communications. Two-way communication concerns the bifacial flow of information. Synchronicity evaluates the speed of the interaction. This led to the definition of interactive communication: “communication that offers individuals active control and allows them to communicate both reciprocally and synchronously” (Liu, 2003: 208). Finally, human-to-content interactivity refers to the ability to contribute to the organizational online content by commenting on organizational posts and to reply to other users‟ posts. (Loureiro & Gomes, 2016; Men & Tsai, 2012). Thus, considering the above-mentioned, the following research question is proposed: RQ1: What strategies are Portuguese companies incorporating to create and maintain relationships with publics on their Websites, Facebook and Instagram pages? Research design We conducted an exploratory content analysis to investigate online relationship cultivation strategies by Portuguese brands (RQ1). Following Loureiro and Gomes (2016), first we retrieve a list of the 50 most valuable Portuguese brands of 2016 provided by Brand Finance, “…the world’s leading independent branded business valuation…” (The Brand Finance Group, 2016). This list is made with regards to the brand value (USD $ millions) and the brand rating in the year under analysis, therefore raking the top 50 Portuguese brands. Afterwards, from this initial sample of 50 companies, brands are analysed in terms of their presence in social media by verifying if they have an official website and brand fan Pages on Facebook Instagram. After examining their social media presence, the sample included 47 companies with a website, 28 companies with a Facebook page and 19 with an Instagram account. Pages without information or not maintained by the organisation were not considered. Coding categories used in this analysis are adapted from previous research (Waters et al., 2009; Men & Tsai, 2012; Haigh, 2014; Loureiro & Gomes, 2016). The categories coded are the same for Website, Facebook and Instagram pages. Based on Waters et al.‟s (2009) method for coding online relationship cultivation strategies, the website and social media pages are examined to identify the presence of items representing organizations‟ strategies of disclosure, information dissemination and involvement. The units of analysis are the website corporate profile page on Facebook and Instagram page. We evaluate whether each strategy and item occurred, hence categories are coded with „yes‟ or „no‟ depending if the information was present (Haigh, 2014). On websites, the first step is to go to the homepage and see if the website provided a site map to easily find the items belonging to each strategy. When site maps are not available, each tab inside the website would be inspected to look for the information needed for each strategy. Since websites are more complex, with information spread across them instead of reunited in one single page as in Facebook and Instagram the following analyses were simpler. On Facebook the first page of each corporate profile is studied. This is the page that users see after signing in and where they have access to all the main elements, including the photo album and the message board. The details examined on each page are items that are readily observable (Men & Tsai, 2012). On Instagram, the analysis is similar to Facebook. Here, most of the page is visually-based (photos and videos) with the exception of to the brief description below the profile picture or logo (where usually companies also insert the URL to the Website). Thus, we look to photos‟ descriptions to get more insights about the content shared and the cultivation strategies implemented. Users‟ comments are also considered to evaluate, whether or not companies reply to them and initiate conversations with consumers. Intercoder reliability was tested using Perreault & Leigh‟s (1989) formula. Main results and conclusions Websites perform better in the first two strategies (disclosure and information dissemination) by frequently displaying a brief description about the business as well as brand history, logo and visual cues, news links and information about achievements and awards. However, in what concerns the last strategy, interactivity and involvement, websites lack interactive features that allow firms to engage with consumers such as commenting and sharing opportunity. Generally, actions to foment online participation are not implemented. This could be explained by the fact that Websites‟ main purpose is, according to Keller (2009), to express ambitions, history, products as well as the firms‟ vision therefore they act more as sources of information than as sources of interaction. However they still have to be attractive enough to encourage repeated visits (Keller, 2009). By contract, brand fan pages on Facebook and Instagram disclose and disseminate less information about firms and their activities (more evident on Instagram) and perform better in the interactivity and involvement strategy. In accordance with (Jahn & Kunz, 2012), brand fan pages main goal is to promote a communicative and interactive channel that creates a bond between the user and the brand, therefore it is expected that the main strategy used to nurture relationships on these social networks is the one that enables interaction and encourages involvement. Finally, comparing the three SNS‟s, Facebook seems to be the more consistent channel to combine and implement the three strategies altogether, since it displays a better overall performance. However, each social networking site has its own role, therefore companies should consider which network works best for each strategy and for each type of consumer and build an overall plan that maximizes the potential to connect with consumers, remembering that the image they build online should present an accurate representation of the brand and should align with other marketing efforts to present consistent messages to customers. Regarding consumer engagement, brands should focus on creating interesting and captivating content instead of posting too regularly just to have an active online presence. Posting more often does not necessarily lead to online brand engagement. Moreover, having more followers is not necessarily good on its own. Fans need to feel connected to the brand and its content and usually, smaller audiences are more engaged with brands. Therefore, brands should work on strategies that allow them to grow their audience while keeping the perks of interacting with smaller audiences. Also, audience growth rate is a helpful measure to evaluate performance on each network, identify which one is generating the highest rates and investigate how to gain more followers on all networks. Additionally, it may be useful in tracking specific campaigns‟ success.

Critical Drivers and Barriers of Corporate Social Responsibility in Saudi Arabia Organizations

Luisa PINTO,Alwyia ALLUI 한국유통과학회 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.11

Several studies demonstrate that Corporate Social Responsibility (CSR) is becoming a dominant issue in both research and companies’ management due to stakeholders’ pressure. The identification of internal and external drivers and barriers is an initial stage of the corporate social responsibility implementation. The study aims to identify and analyze the drivers and barriers of CSR in Saudi Arabia’s private organizations. For this purpose, primary data were collected using a survey questionnaire that was administered to a representative sample of companies from different sectors in Saudi Arabia. The results show that the main drivers behind the adoption of CSR among Saudi companies are improvement of corporate image, ethical/moral commitment, and to some extend customers’ requirements and risk management. The findings of this study also suggest that there are important barriers hindering the adoption of corporate social responsibility. Among these, the lack of management commitment and the lack of investors’ interests together with the lack of economic resources and lack of employees’ competencies are the most prominent. The findings of this study not only contribute to a deeper understanding of CSR drivers and barriers, but could also encourage firms’ managers and stakeholders to improve CSR activities for more effective implementation.

LIFE IN KOREA : GLIMPSES

Princess Pinto 한인문화연구원 1988 한인문화논총 Vol.6 No.-