bluuebunny/crossref_metadata_2025 huggingface dataset:
Seeking Value Through Deviation? Economic Impacts of IT Overinvestment and Underinvestment
Authors: Ho Joanna , Tian Feng , Wu Anne , Xu Sean Xin
Published: July 2017

This study addresses the economic impacts of information technology (IT) overinvestment and underinvestment decisions. Based on the view of Red Queen competition in conjunction with institutional theory, we hypothesize that overinvestment and underinvestment in IT have nonlinear performance impacts. Drawing on the idea of management control mechanisms, we further hypothesize that the performance impacts are conditional on ownership concentration. Using a sample of S&P 500 firms, we find that, on average, there is a positive relationship between a firm’s overinvestment in IT and Tobin’s q, although that relationship attenuates at higher levels of overinvestment. However, there is, on average, no relationship between a firm’s underinvestment in IT and its Tobin’s q. Importantly, the payoff for underinvestment becomes positive for companies with founding-family ownership. Implications for research and practice are discussed.

The online appendix is available at https://doi.org/10.1287/isre.2017.0710 .
El reino nazarí de Granada como área de comercio internacional: ¿Colonia mercantil o espacio de integración?
Authors: Fábregas García Adela
Published: July 2017

El reino nazarí de Granada muestra entre los rasgos más notables de su caracterización socio-económica una marcada orientación comercial de parte de su economía productiva. A través de la misma se proyecta hacia los mercados internacionales, en particular hacia una plataforma de mercados integrados que se está definiendo en esos momentos en el área del Occidente bajomedieval. Así es como se explica la presencia constante y en ascenso de grupos y comunidades de hombres de negocios extranjeros en tierras nazaríes. En este sentido, cada vez se percibe con más claridad la sensación de que nos encontramos ante una realidad próxima a procesos de convergencia, con sus dificultades, éxitos y fracasos, de un mercado que está naciendo y que se está integrando en un espacio económico nuevo, definido como precapitalista. En todo caso, lo verdaderamente importante en el futuro será calibrar la verdadera dimensión de este viraje que experimenta la estructura económica nazarí de manos de esta orientación especulativo-comercial, y qué grado de distorsión introduce en los principios caracterizadores de lo que se entiende como sociedad islámica clásica.
El cabeçatge, un desconegut servei aprovat a les Corts Valencianes de 1301-1302
Authors: Baydal Sala Vicent
Published: July 2017

L'expedició duta a terme per Jaume II d'Aragó contra el seu germà Federico II de Sicília entre juliol de 1298 i setembre de 1299 va generar uns enormes deutes per a la Corona, agreujades per les primeres campanyes de conquesta del regne castellà de Múrcia. Per això, el rei va tractar que els seus súbdits contribuïren al sanejament de les seues finances a través dels serveis aprovats en diverses reunions de Corts que van tenir lloc, successivament, a Catalunya en 1299-1300, a Aragó en 1300 i 1301, i a València en 1301-1302. Aquest article analitza les característiques d'aquells serveis, amb especial atenció al concedit en les Corts valencianes, recaptat a través d'un impost de capitació denominat «cabeçatge».
Who am I?: A case study of a multicultural boy’s identity
Authors: Kim Jayoung
Published: July 2017

Along with increasing local and global multiculturalism, many scholars are interested in understanding how multicultural children negotiate their identity and their ideological becoming in the sociocultural environment. This study (delves into) one 9-year-old Canadian-Korean boy’s understanding of his identity as a multicultural child while living in Seoul, South Korea. I used Bakhtin’s dialogic theory of language in this inquiry. I also used a narrative case study methodology to understand the diverse ways that he represents his sociocultural worlds by recounting his events or actions within and across cultures. I interviewed him in an in-depth way for three months. The main results were as follows. First, identity is a continuous, enacted, and negotiated process of becoming in different spaces and places. Second, one’s identity is strongly influenced by languages that one uses within his sociocultural contexts. Third, a child can be an active inquirer who voluntarily expresses, voices, and represents his diverse identities. These findings suggest that understanding a 9-year-old Canadian-Korean boy’s dynamic identity construction as a multicultural child is an important way to understand his diverse positionings, values, and beliefs in his social world. More qualitative inquiries of multicultural children and their voices are needed to better understand how multicultural children perceive, negotiate, and construct their identity in multiple sociocultural environments.
The effects of physical activities on middle school students’ multicultural acceptance: Focusing on self-esteem as a mediator
Authors: Kwak Yoonkyung , Yang Youngmi
Published: July 2017

This study aims to explore the effects of physical activities on students’ multicultural acceptance and to examine the mediating effects of self-esteem on the relationship between the two variables. To achieve this, third wave data from the KCYPS carried out by the NYPI were analyzed. A total of 2,259 students, all in the third year of middle school, were included in this study. The findings of the study were as follow. First, middle school students’ participation in physical activities was positively correlated with self-esteem. Second, middle school students’ self-esteem was related to a high level of middle school students’ multicultural acceptance. Third, a variable of self-esteem played a role in mediating the effects between participation in physical activities and middle school students’ multicultural acceptance. Consequently, this study is expected to contribute to developing physical education curricula and creating policies that demonstrate an understanding of the needs of mixed-ethnicity children born from multicultural families in order to increase the levels of middle school students’ multicultural acceptance.
Effects of married migrant women's social participation upon marital satisfaction: Mediating variable of acculturative stress
Authors: Lee Chang Woon , Jung Myung Hee
Published: July 2017

This study investigated effects of married migrant women's social activity participation with mediating variable of acculturative stress. The subject was 364 married migrant women at Seoul and Gyeonggi-do. The respondents were given questionnaire to answer for 38 days from December 20, 2016 to January 26, 2017. SPSS 23.0 was used. Exploratory factor analysis was done to increase internal appropriateness, and Cronbach's α was used to investigate internal consistency, and Pearson's correlation analysis was done to investigate relation between participation in the society, cultural adaptation stress and marital satisfaction. Three stage regression was used to investigate mediating effect of cultural adaptation stress at the effect of social activity participation upon marital satisfaction (Baron and Kenny(1986)), and Sobel test was conducted to verify significance of mediating effect. Married migrant women's social activity participation had significant influence upon marital satisfaction, and social activity participation has significant influence upon cultural adaptation stress. Not only social activity participation but also cultural adaptation stress was used at the same time to have significant influence upon marital satisfaction and to have partial mediating effect of cultural adaptation stress. This study conduct exploratory analysis upon married migrant women's social activity participation and cultural adaptation stress to give implications of less divorce of multi-cultural family and higher marital satisfaction.
A hermeneutic study on the study and career development experiences of multicultural adolescents
Authors: Jeon Jae-soo , Lim Un-taek
Published: July 2017

This study conducts an in-depth analysis of study and career development experiences among multicultural adolescents, this by investigating the potential semantic structures presented in their social venues and their influences on the lives of multicultural adolescents. The study also compared compared common and different features among their experiences in each case, reorganizing the ways that the causal mechanism of social structural acts, which multicultural adolescents chose and practiced in their study and career development experiences, revealed it’s tendency. Eight multicultural adolescents participated in a “narrative interview about their actual study and career development experiences,” and the collected data were analyzed using “objective hermeneutics.” The researchers reorganized the entire cases and found that the multicultural adolescents were not free from the urgent needs of their inferior social and economic life and accordingly experienced difficulties with their study and career development. Strongly characterized by the features of state-nation of a single race, the South Korean society led the multicultural adolescents to the provisional agreement of “game of hiding one’s culture” for survival and some symbolic game of “becoming Koreans.” Based on those findings, the study proposed some practical and policy-related tasks to help multicultural adolescents with their study and career development for social integration.
The role of resistance in incorporating XBRL into financial reporting practices
Authors: Krisko Adam
Published: July 2017

Using the actor-network theory (ANT), this article sought to analyze the translation process induced by the Danish regulatory agency for financial reporting to incorporate the eXtensible Business Reporting Language (XBRL) into the financial reporting practices, giving special attention to how resistance demonstrated by certain actors shapes the process of incorporating the technology into the financial reporting environment. The empirical analysis, relying on a series of semi-structured interviews conducted between November 2013 and February 2016, highlighted the strategic steps taken by the regulatory agency to deal with the emerging resistance. The analysis illustrated how the initial setting created at the early stages of the translation process develops into a socio-technical context in which the participating actors' no longer express resistance, and commit to the incorporation of XBRL. In this respect, the paper contributes to previous studies on XBRL, adds to the financial reporting literature by illustrating how resistance shapes the introduction of complex regulatory changes, and contributes to the ANT literature, especially those based on Michel Callon’s translation model.
Housing Heterogeneity Dimensions and Their Elements: a Systemic Approach
Authors: Vanags Jānis , Geipele Ineta , Sarkans Auseklis , Usenieks Didzis
Published: July 2017

Housing market participants constantly face the housing heterogeneity - the technical and socio-economic differences of dwellings in a certain populated area. Housing heterogeneity often complicates the managerial decision making related to housing transactions, identification and objective evaluation of the quantitative and qualitative aspects of transactions. Housing heterogeneity is an objective phenomenon that implies housing uniqueness - housing distinguishing characteristics divided into specific and interconnected groups within the framework of the research. Most of these differences can be noticed by each market participant, but some of them can be identified only by experienced and professionally trained market participants. Theory and practice have demonstrated that the constituent groups of heterogeneity influence each other and take part in the formation of market value and transaction price of housing units. The increased housing construction intensity, the continuous modernisation of construction technologies and the diversification of building materials used in housing construction, as well as restriction of the building plot of land change the quantitative and qualitative aspects of heterogeneity dimensions. This poses considerable challenges to market participants in the managerial decision making process related to housing transactions. Research results demonstrate that the socio-economic elements of housing heterogeneity are constantly changing under the influence of the dominating factors of the external and internal environment. Therefore, nowadays, housing heterogeneity has become a major cause of information asymmetry, which means that heterogeneity is inherent in the formation of socio-economic market barriers in the housing market.
Trends of Housing Construction Development in Ukraine: Retrospective and Contemporary Situation
Authors: Bibik Natalya , Dril Natalia
Published: July 2017

The construction industry is one of the main components of the national economy of Ukraine as well as many countries worldwide. The volume and level of construction, especially housing, considerably influence further development of all other sectors of economy, and guarantee continuous growth of economic potential and national income. The aim of the research is to analyze the trends of construction development, its historical background and current situation in Ukraine. Literature analysis methods, statistical data processing, historical and logical access methods have been used in the research. The article provides historical overview of housing construction development in Ukraine, current challenges in the industry and solutions to solve them.
Isolation, fatty acid profiles and cryopreservation of marine thraustochytrids from mangrove habitats in Thailand
Authors: Unagul Panida , Suetrong Satinee , Preedanon Sita , Klaysuban Anupong , Gundool Wunna , Suriyachadkun Chanwit , Sakayaroj Jariya
Published: July 2017

Thraustochytrids, marine protists, have attracted attention as a proven alternative source of polyunsaturated fatty acids (PUFAs). We isolated a high diversity of thraustochytrids from Thailand and tested their potential use in the production of high-value fatty acids. The isolated thraustochytrids can be categorized into seven major groups based on unique morphological features, molecular phylogeny and fatty acid profiles. Two of the seven isolated thraustochytrid groups could potentially be new lineages in the Labyrinthulomycetes. The production of total fatty acid (TFA) from these thraustochytrids ranged from 2.4 to 35.6% (w/w), with biomass varying from 0.3 to 8.9 g l
α-Defensin point-of-care test for diagnosis of prosthetic joint infections: neglected role of laboratory and clinical pathologists
Authors: Drago Lorenzo , Toscano Marco , Tacchini Lorenza , Banfi Giuseppe
Published: July 2017

Periprosthetic joint infection (PJI) is a serious complication that may occur after native joint replacement leading to a severe health and economic burden. Currently, due to several confounding factors, PJI is difficult to diagnose. Today, a multidisciplinary approach is indispensable to correctly define a periprosthetic joint infection; indeed, tissue histology, microbiology cultures and clinical findings are used together to achieve this goal. Analysis of α-defensin is commonly used for PJI diagnosis, as it allows the rapid detection of α-defensin present in the synovial fluid following a microbial infection. Currently, a point-of-care testing (POCT) assay able to detect the presence of human α-defensins 1–3 in synovial fluid of patients is aimed directly at orthopedic surgeons. However, many orthopedic surgeons lack experience and training in quality laboratory practices, often failing to appreciate the significance of quality control and proper documentation when using POCT assays. To guarantee the highest quality diagnostic services, the α-defensin test should be used together with other biochemical and microbiological criteria commonly used for PJI diagnosis. Additionally, the close cooperation and communication between laboratory, pathologists and physicians is of fundamental importance in the correct diagnosis of PJI.
CO2 Capture by Absorption in Activated Aqueous Solutions of N,N-Diethylethanoloamine
Authors: Kruszczak Ewelina , Kierzkowska-Pawlak Hanna
Published: July 2017

The CO2 absorption process using aqueous amine solutions has been the most promising technique used for the removal of CO2 from gas streams in energy sector. In recent years, many researchers tested solutions which are composed of several compounds: a slow reacting tertiary amine- and a fast amine acting as an activator. In this paper, the CO2 absorption rate in an aqueous solution of N,N-diethylethanoloamine (DEEA) and activated solutions DEEA is investigated experimentally. The activators considered are sterically hindered amines: 2-amino-2-methyl-1-propanol (AMP), 2-amino-2-methyl-1,3-propanediol (AMPD) and N-methyl-1,3-propanediamine (MAPA) from the group of polyamines. The experiments were conducted over the temperature range of 303-333 K and the total amine concentration of 2 M. From the CO2 absorption experiments into mixed aqueous solutions of DEEA and MAPA, it was found that the addition of small amounts of MAPA into aqueous DEEA solutions has a significant effect on the enhancement of the CO2 absorption rate. The application of hindered amines: AMP or AMP as activators resulted in a marginally improvement of the absorption rate of CO2.
On cyclic yield strength in definition of limits for characterisation of fatigue and creep behaviour
Authors: Gorash Yevgen , MacKenzie Donald
Published: July 2017

This study proposes cyclic yield strength as a potential characteristic of safe design for structures operating under fatigue and creep conditions. Cyclic yield strength is defined on a cyclic stress-strain curve, while monotonic yield strength is defined on a monotonic curve. Both values of strengths are identified using a two-step procedure of the experimental stress-strain curves fitting with application of Ramberg-Osgood and Chaboche material models. A typical S-N curve in stress-life approach for fatigue analysis has a distinctive minimum stress lower bound, the fatigue endurance limit. Comparison of cyclic strength and fatigue limit reveals that they are approximately equal. Thus, safe fatigue design is guaranteed in the purely elastic domain defined by the cyclic yielding. A typical long-term strength curve in time-to-failure approach for creep analysis has two inflections corresponding to the cyclic and monotonic strengths. These inflections separate three domains on the long-term strength curve, which are characterised by different creep fracture modes and creep deformation mechanisms. Therefore, safe creep design is guaranteed in the linear creep domain with brittle failure mode defined by the cyclic yielding. These assumptions are confirmed using three structural steels for normal and high-temperature applications. The advantage of using cyclic yield strength for characterisation of fatigue and creep strength is a relatively quick experimental identification. The total duration of cyclic tests for a cyclic stress-strain curve identification is much less than the typical durations of fatigue and creep rupture tests at the stress levels around the cyclic yield strength.
Exact Soliton and Kink Solutions for New (3+1)-Dimensional Nonlinear Modified Equations of Wave Propagation
Authors: Wazwaz Abdul-Majid
Published: July 2017

We present exact solutions for new (3+1)-dimensional nonlinear equations of wave propagation and fluids. We use the tanh/sech method combined with a computer symbolic system for a reliable treatment of this work. We determine a variety of exact solutions for each equation that contains soliton, kink and periodic solutions. The constraints that guarantee the existence of soliton and kink solutions were examined and found to be related to the coefficients k, r and s of the space variables x, y, and z respectively.
Legal Aspects of the Agricultural Land Protection in Slovakia
Authors: Palšová Lucia , Melišková Ina , Bandlerová Anna
Published: July 2017

Protection of the functions and surface area of agricultural land should be the interest of every society and is an expression of the maturity of the country. The paper analyses historical development of the legal regulation on the protection of agricultural land in Slovakia since the establishment of Czechoslovakia i.e. from 1918 to the present, i.e. until 2017.
25 Years of the Leader Initiative as European Rural Development Policy: The Case of Extremadura (SW Spain)
Authors: Nieto Masot Ana , Alonso Gema Cárdenas
Published: July 2017

For 25 years the rural development policy has been implemented through the LEADER Approach in the EU to reduce differences between rural and urban areas, as well as to satisfy the basic needs of the population. In this paper, Extremadura is analysed, which is a Spanish region where LEADER has been applied since its inception in 1991. The objective is to assess if the distribution of rural development aids has been influenced by the diverse demographic and socioeconomic realities that Extremadura presents from the analysis of variables that represent these realities on the territory through a GIS. Following this methodology, it has been noticed that the largest investments have been executed in the most developed rural areas of the region.
Tracing Cultural Landscape Values of Children with Participatory Geographic Information System
Authors: Puolamäki Laura
Published: July 2017

The cultural landscape value categories found from the workshop evaluation describe the character of the cultural landscape of children: living, learning and moving in the network of places between home and the world outside based on the local and family culture creates both individually and collectively valuable places. When these places are situated in a listed building or landscape area, the cultural landscape values of expert evaluation and children ́s evaluation connect. But based on this case study these value objects are more often disconnected. Landscape evaluation produced with children by suitable methods reveal the network of places and ways to experience them. Experience is a key for opening cultural heritage to this group. By finding a way to afford the experience they desire in the places of listed heritage, children could connect better to cultural landscape.
Impact of Different PQ Models of Wind Turbine Generating Units (WTGUs) on System Voltage Performance
Authors: Moger Tukaram , Dhadbanjan Thukaram
Published: July 2017

This paper presents the voltage performance analysis of the system with various types of wind turbine generating units (WTGUs). A detailed voltage performance analysis is carried out by considering the different PQ models used for computing the reactive power output of the WTGUs (fixed/semi-variable speed and variable speed WTGUs). The different PQ models of fixed/semi-variable speed WTGUs incorporated for the studies are voltage dependent model, voltage independent model, power factor based model, and PX model. In addition, the variable speed WTGUs are also considered in different fixed power factor mode of operation. Based on these models, a comparative analysis is presented. A modified 27-bus equivalent distribution test system with dispersed wind generation is considered for the studies. Further, the case studies have been carried out by considering the various wind power output levels of WTGUs to examine its impact on system voltage performance. From the comparative analysis, the power factor based model can be the best choice over the other models (which are based on voltages) for the system studies with fixed/semi-variable speed WTGUs.
Landscape and Gods Among the Khanty
Authors: Leete Art
Published: July 2017

The purpose of this article is to examine Khanty spatial ritual behaviour in the context of the simultaneous application of different ideas about sacred landscape. I aim to demonstrate the functional pattern behind handling seemingly ambivalent characteristics of cosmological models in the tangible ritual performance of the Khanty, an indigenous people inhabiting the taiga and forest taiga zone of Western Siberia. I explore three cases in which the concept of sacred topography is applied among the Khanty by exploring two public ceremonies of reindeer sacrifice and one episode of a post-funeral rite. It appeared that the spatial conceptualisation is different in different rituals. During sacrificial ceremonies, the Khanty position the Upper World in the southern direction, while in the case of death rituals, the Upper World is projected towards upstream of a river, even if it remains in the north. Studying different spatial orientations during rituals provides a methodological key for approaching other concepts of vernacular belief among Siberian indigenous communities.
A Database-Centric Framework for the Modeling, Simulation, and Control of Cyber-Physical Systems in the Factory of the Future
Authors: Bonci Andrea , Pirani Massimiliano , Longhi Sauro
Published: July 2017

The factory of the future scenario asks for new approaches to cope with the incoming challenges and complexity of cyber-physical systems. The role of database management systems is becoming central for control and automation technology in this new industrial scenario. This article proposes database-centric technology and architecture that aims to seamlessly integrate networking, artificial intelligence, and real-time control issues into a unified model of computing. The proposed methodology is also viable for the development of a framework that features simulation and rapid prototyping tools for smart and advanced industrial automation. The full expression of the potentialities in the presented approach is expected in particular for applications where tiny and distributed embedded devices collaborate to a shared computing task of relevant complexity.
Evaluation of Flexible Manufacturing Systems Using a Hesitant Group Decision Making Approach
Authors: Ervural Beyzanur Cayir , Ervural Bilal , Kabak Özgür
Published: July 2017

Flexible manufacturing systems (FMS) are capable of processing various parts, styles, and quantities of production in manufacturing systems. It is a quite complex process for companies to decide the appropriate FMS design as it involves multiple and conflicting criteria and multiple decision makers under various uncertainties. The fuzzy set theory offers an efficient tool to cope with vagueness and to define performance measurement of FMS in a multi-attribute group decision making (MAGDM) framework. In this study, we present a MAGDM approach based on hesitant fuzzy sets to evaluate FMS in a fuzzy environment. A practical example is provided to demonstrate the proposed methodology. In addition, the performance of the method is assessed by a comparative study and sensitivity analysis. The results of the analysis show that the MAGDM approach is a useful tool for experts in terms of evaluation of FMS.
4D ultrasound study of fetal movement early in the second trimester of pregnancy
Authors: Sajapala Suraphan , AboEllail Mohamed Ahmed Mostafa , Kanenishi Kenji , Mori Nobuhiro , Marumo Genzo , Hata Toshiyuki
Published: July 2017

Aim:

To assess the frequency of fetal movement and reproducibility of fetal movement counting in normal singleton pregnancies early in the second trimester using four-dimensional (4D) ultrasound.

Methods:

Twenty-nine singleton pregnancies were studied for 15 min employing 4D ultrasound at 14–16 (19 cases) and 17–19 (10 cases) weeks of gestation. The frequencies of eight fetal movements (head anteflexion, head retroflexion, body rotation, hand to face movement, general movement, isolated arm movement, isolated leg movement and mouthing movement) were evaluated.

Results:

The most frequent fetal movements were isolated arm movements at 14–16 and 17–19 weeks’ gestation. There was a significant difference only in the frequency of mouthing movement between 14–16 and 17–19 weeks’ gestation (P

Conclusion:

The difference in the frequency of mouthing movement at 14–16 and 17–19 weeks’ gestation may be due to increasing fetal swallowing because of the increasing amniotic fluid early in the second trimester of pregnancy. To the best of our knowledge, this is the first study on the reproducibility assessment of fetal movement counting using 4D ultrasound. However, the data and their interpretation in the present study should be taken with some degree of caution because of the small number of subjects studied. Further studies involving a larger sample size are needed to assess the reproducibility of fetal movement counting using 4D ultrasound.
Cooptation as a discourse strategy
Authors: Heine Bernd , Kaltenböck Gunther , Kuteva Tania , Long Haiping
Published: July 2017

Some recent lines of research suggest that there are two different domains of discourse processing where one is concerned with the form and meaning of sentences and their parts and the other with the organization of discourse beyond the sentence and the relationship between linguistic material and the extra-linguistic situation of discourse. One important mechanism relating the two domains to one another is provided by cooptation, a cognitive-communicative operation whereby pieces of discourse located in one domain are transferred to another domain. In the present paper, the nature of this operation is looked at in more detail based on the framework of Discourse Grammar (Kaltenböck et al. 2011, On thetical grammar.
Design, synthesis and evaluation of optimized saponin variants derived from the vaccine adjuvant QS-21
Authors: Fernández-Tejada Alberto
Published: July 2017

The saponin natural product QS-21 is one of the most potent investigational adjuvants, which are substances added to vaccines to enhance the immunogenicity of the antigen and potentiate the immune response. While QS-21 has been coadministered with vaccines against cancers and infectious diseases in many clinical trials, its inherent liabilities (scarcity, heterogeneity, instability, and dose-limiting toxicity) have limited its widespread clinical use. Furthermore, its molecular mechanisms of action are poorly understood. Structural modification of the natural product using chemical synthesis has become an important strategy to overcome these limitations. This review focuses mainly on research efforts in the group of the late Professor David Y. Gin on the development of optimized synthetic saponin adjuvants derived from QS-21. A number of QS21 variants incorporating stable acyl chain amide linkages, truncated carbohydrate domains, and targeted modifications at the triterpene and central glycosyl ester linkage were designed, chemically synthesized, and immunologically evaluated. These studies delineated key minimal structural requirements for adjuvant activity, established correlations between saponin conformation and activity, and provided improved, synthetically accessible saponin adjuvants. Moreover, leveraging these structure–activity relationships, novel saponin probes with high potency and reduced toxicity were developed and used in biodistribution and fluorescence imaging studies, yielding early insights into their enigmatic mechanisms of action.
The semantics of Spanish Clitic Left Dislocations with epithets
Authors: Estigarribia Bruno
Published: July 2017

Rioplatense Spanish
Thermodynamic model of Ni(II) solubility, hydrolysis and complex formation with ISA
Authors: González-Siso Maria Rosa , Gaona Xavier , Duro Lara , Altmaier Marcus , Bruno Jordi
Published: July 2017

The solubility of β–Ni(OH)2(cr) was investigated atT=(22±2)°C in the absence and presence of α-isosaccharinic acid (ISA), the main degradation product of cellulose under alkaline pH conditions. Batch solubility experiments were performed from undersaturation conditions under inert gas (Ar) atmosphere. Solubility experiments in the absence of ISA were conducted in 0.5 and 3.0 M NaCl–NaOH solutions at 7.5≤ pHm≤13 (with pHm=–log10[H+]). XRD analyses of selected solid phases collected after completing the solubility experiments (≈300 days) confirmed that β–Ni(OH)2(cr) remains as solid phase controlling the solubility of Ni(II) in all investigated conditions. Based on the slope analysis (log10[Ni] vs. pHm) of the solubility data and solid phase characterization, the equilibrium reactions β–Ni(OH)2(cr)+2 H+⇔Ni2++2 H2O(l) and β–Ni(OH)2(cr)⇔Ni(OH)2(aq) were identified as controlling the solubility of Ni(II) within the investigated pHmregion. The conditional equilibrium constants determined from the solubility experiments at different ionic strengths were evaluated with the specific ion interaction theory (SIT). In contrast to the current thermodynamic selection in the NEA–TDB, solubility data collected in the present work does not support the formation of the anionic hydrolysis species Ni(OH)3−up to pHm≤13.0. Solubility experiments in the presence of ISA were conducted in 0.5 M NaCl–NaOH–NaISA solutions with 0.01 M≤[NaISA] ≤0.2 M and 9≤ pHm≤13. XRD analyses confirmed that β–Ni(OH)2(cr) is also the solid phase controlling the solubility of Ni(II) in the presence of ISA. Solubility data of all investigated systems can be properly explained with chemical and thermodynamic models including the formation of the complexes NiOHISA(aq), Ni(OH)2ISA−and Ni(OH)3ISA2−. The reported data confirm the low solubility (<10−7M) of Ni(II) in hyperalkaline pH conditions representative of cementitious environments (10≤ pH ≤13), which increases to up to 10−5M in the presence of 0.2 M NaISA. These results significantly improve source term estimations for Ni(II) in environments relevant for the disposal of low and intermediate level radioactive waste (L/ILW). The chemical and thermodynamic models derived in this work can be implemented in geochemical models/calculations, and provide further confidence in the safety analysis of repositories for the disposal of L/ILW.
Recent developments in microfluidic paper-, cloth-, and thread-based electrochemical devices for analytical chemistry
Authors: Malon Radha S.P. , Heng Lee Yook , Córcoles Emma P.
Published: July 2017

The attractive structural and mechanical properties of cellulose substrates (paper, cloth, and thread), including passive fluid transport, biocompatibility, durability, and flexibility, have attracted researchers in the past few decades to explore them as alternative microfluidic platforms. The incorporation of electrochemical (EC) sensing broadened their use for applications such as clinical diagnosis, pharmaceutical chemical analyses, food quality, and environmental monitoring. This article provides a review on the microfluidic devices constructed on paper, cloth, and thread substrates. It begins with an overview on paper-based microfluidic devices, followed by an in-depth review on the various applications of EC detection incorporated on paper-based microfluidic devices reported to date. The review on paper-based microfluidic devices attempts to convey a few perspective directions that cloth- and thread-based microfluidic devices may take in its development. Finally, the research efforts on the development and evaluation, as well as current limitations of cloth- and thread-based microfluidic devices are discussed. Microfluidic devices constructed on paper, cloth, and thread substrates are still at an early development stage (prototype) requiring several improvements in terms of fabrication, analytical techniques, and performance to become mature platforms that can be adapted and commercialized as real world products. However, they hold a promising potential as wearable devices.
Imagined, prescribed and actual text trajectories: the “problem” with case notes in contemporary social work
Authors: Lillis Theresa
Published: July 2017

Drawing on a text-oriented action research ethnography of the writing practices of UK-based social workers, this paper focuses on a key but problematic aspect of everyday, professional textual practice – the production of “case notes.” Using data drawn from interviews, workshops, texts and observation, the paper locates case notes within social work everyday practice and explores the entextualization of three distinct case notes. The heuristic of
Continuity and change: semiotic relations across multimodal texts in surgical education
Authors: Bezemer Jeff , Kress Gunther
Published: July 2017

In this paper we develop a social semiotic account of continuity and change across texts. Our aims are to make a theoretical contribution to scholarly work on inter-textual relations by adopting a multimodal perspective; and to develop a framework for understanding how texts mediate knowing, learning and agency in education and beyond. We achieve this through a case study of surgical education. We present and analyze, first, a collection of pedagogic texts designed for surgeons learning to perform a common surgical procedure. Second, we look at a series of texts that culminated in a pedagogic text on surgery for the general public. We conclude that a multimodal, social semiotic framework provides essential means for the recognition, documentation and understanding of continuities and changes in text production and engagement.
Text bite news: the metapragmatics of feature news
Authors: Van Hout Tom , Burger Peter
Published: July 2017

Drawing on a weekly news feature of recontextualized public discourse, this paper examines journalists’ uptake of political (mis)communication. We label such mediatized speech events text bites. Text bites present us with eye-catching bits of reported speech about the main characters: the politician whose words are being quoted and the journalist captioning the quote. Rather than speak for themselves, the quotes speak through recontextualization – that is, through the inflection of prior discourse with new meanings. Our data are taken from a corpus consisting of news quotes by politicians published in De Standaard, a Belgian news site. Drawing on the linguistic anthropology of intertextuality, we analyze how the journalistic responses evaluate the reported politicians, their statements and their communicative performance. Findings show how a media logic conditions what politicians can and cannot say, to whom and about whom, and how journalists portray politicians who do not comply with this logic. Evaluations of the moral and verbal merits of what politicians do with words evince an appreciation for colorful characters, self-deprecatory humor, plain language and stylistic craftsmanship. Media criticism is generally rebuffed: text bites do boundary work, demarcating the professional territory of journalists and politicians. Text bites address a highly media-literate readership of news consumers who recognize the “characters” in the plot line of political communication.
Feature reassembly as constraint satisfaction
Authors: Putnam Michael
Published: July 2017

Research on bilingual grammars from a formal perspective has often come under the guise of mainstream generative grammar. Since the inception of Chomsky’s (
Study on Host-Guest Inclusion Complexation of a Drug in Cucurbit [6]uril
Authors: Roy Kanak , Saha Subhadeep , Datta Biswajit , Sarkar Lovely , Roy Mahendra Nath
Published: July 2017

Assembly of pyridine-2-aldoxime drug with cucurbit [6]uril (CB[6]) has been investigated by 1H-NMR and 2D-ROESY NMR, UV-Vis spectroscopy, FT-IR spectroscopy, surface tension and conductivity measurements in aqueous saline environment. The distinct cationic receptor feature and the cavity dimension of the CB[6] emphasize that the macro-cyclic host molecule remain as complex with the nerve stimulus drug molecule. The results obtained from surface tension and specific conductivity measurements suggest 1:1 inclusion complex formation between drug and CB[6]. The stability constant evaluated by UV-Vis spectroscopic approach is 2.21×105 M−1 at 298.15 K, which indicates that the complex is sufficiently stable at physiological temperature.
Análise do projeto de reabilitação do Casino de Oficiales do Centro Clandestino de Detención, Tortura y Extermínio de la Escuela de Mecánica de la Armada – ESMA. Buenos Aires/Argentina
Authors: Gehrke Cristiano
Published: July 2017

O presente ensaio tem como objetivo fazer uma breve análise sobre o processo de reabilitação e a sua transformação em um museu de sítio do antigo Casino de Oficiales do Centro Clandestino de Detención, Tortura y Extermínio de la Escuela de Mecánica de la Armada – ESMA, localizado na cidade de Buenos Aires/Argentina.
Praias e a arqueologia de ambientes aquáticos: Diálogos transversais
Authors: De Castro Luciana , Rambelli Gilson
Published: July 2017

A sistematização das informações pertinentes ao patrimônio submerso e de suas respectivas praias, através do aparato da Carta Arqueológica Subaquática, permite um melhor dimensionamento desses bens culturais na área de trabalho – voltada ao ambiente cultural marítimo e fluvial – e ajuda na definição de estratégias, de curto e/ou longo prazo, para o conhecimento aprofundado, para a proteção e para a gestão dos mesmos. Este texto é o resultado do esforço em problematizar a praia a partir de um aparato teórico-metodológico da Arqueologia de Ambientes Aquáticos e construir argumentos, métodos e abordagens de pesquisa apoiados na Carta Arqueológica Subaquática e na Legislação Brasileira produzindo um cenário crítico sobre o patrimônio em ambientes praiais de cidades litorâneas a nível regional.
Os ceramistas Jê nos arranha-céus do Alto Ribeira: uma análise espacial Itararé-Taquara
Authors: Ozório Fernando , Miguel Rucirene , Pedott Rafael , Monma Ricardo , Bassi Filippo Stampanoni , Amaral Daniella Magri
Published: July 2017

RESUMO: Áreas de cristas de serras e vertentes de elevadas inclinações são raramente tidas como possuidoras de alto potencial arqueológico, entretanto, na bacia do alto rio Ribeira, na divisa entre os Estados do Paraná e São Paulo, é possível encontrar uma série de ocupações pré-coloniais de grupos produtores de cerâmica vinculada à Tradição Itararé-Taquara e observar áreas de atividades pertencentes a esses assentamentos. O objetivo deste artigo é apresentar a análise de aspectos espaciais intrassítios e intersítios e a interpretação da cronologia dessas ocupações localizadas em locais de relevo acidentado, tendo como base os elementos materiais encontrados em dois sítios recentemente escavados na região.ABSTRACT: Mountain hill tops and slopes are rarely known for their high archaeological potential. However, a didactical exception can be found in the Upper Ribeira Basin, near the border which divides the Brazilian States of São Paulo and Paraná, where it is possible to observe pre-colonial occupations of Itararé-Taquara pottery producers and activity areas related to these sites. Based on the material elements of two recently excavated sites of this region, our aim is to present a spatial intra and inter-site analysis and the interpretation of the chronology of these rough terrain occupations.
Ciberarqueologia: O diálogo entre realidade virtual e arqueologia no desenvolvimento de Vipasca Antiga
Authors: Martire Alex da Silva
Published: July 2017

RESUMO: 
Este artigo apresenta os conceitos principais que estão relacionados à área da Ciberarqueologia: um ramo recente dentro da Arqueologia que estabelece o diálogo entre Realidade Virtual e os trabalhos arqueológicos. Primeiramente é apresentado o panorama da história da cibernética a fim de contextualizar a Realidade Virtual. Depois são discutidas as definições de real e virtual. Por fim, é apresentada a prática ciberarqueológica por meio do aplicativo Vipasca Antiga: um simulador interativo sobre uma antiga área de mineração romana hoje pertencente ao território de Portugal. 
ABSTRACT: 
This article presents the main concepts that are related to Cyber-Archaeology: a recent development within archaeology that establishes a dialogue between Virtual Reality and archaeological works. First an overview of the history of cybernetics is presented in order to contextualize Virtual Reality. Then the real and virtual definitions are discussed. Finally, the cyberarchaeological practice (i.e. the dialogue between cybernetics and archeology) is presented through the Vipasca Antiga application: an interactive simulator about an ancient Roman mining area now belonging to the territory of Portugal, and the final product of my PhD research.
Arqueologia clássica e as humanidades digitais no Brasil
Authors: Teixeira Bastos Marcio , Fleming Maria Isabel D'Agostino , Porto Vagner Carvalheiro
Published: July 2017

RESUMO: 
O artigo aborda os Estudos Clássicos desenvolvidos no Brasil sob a perspectiva das novas tecnologias empregadas no Laboratório de Arqueologia Romana Provincial do Museu de Arqueologia e Etnologia da Universidade de São Paulo (LARP/MAE-USP). Discute a relevância das Humanidades Digitais para a Arqueologia no meio acadêmico e os benefícios da plataforma ArcGis e dos Sistemas de Informação Geográfica aliados às questões de pesquisas que lidam com Arqueometria e Ciberarqueologia. Priorizando o conhecimento das províncias romanas através dos seus respectivos desenvolvimentos regionais, o artigo percorre novas vias de diálogo e entendimento das práticas transculturais e transregionais como forma de potencializar a pesquisa arqueológica sobre o Mediterrâneo Antigo no Brasil.
ABSTRACT: 
This paper deals with the development of Classical Archaeology in Brazil from the perspective of the new technologies used in the Laboratory for Roman Provincial Archaeology of the Museum of Archeology and Ethnology of the University of São Paulo (LARP / MAE-USP). It discusses the relevance of the Digital Humanities to Archeology in the Brazilian academic environment and the benefits of the ArcGis platform and the Geographic Information Systems combined with Archeometry and Cyber-Archeology approaches. This paper aims to open new avenues for dialogue by means of enhancing archeological research about ancient Mediterranean in Brazil.
Arqueologia náutica no sul do Brasil: Escavação dos sítios NAV Inédito e NAV Lagoa do Peixe.
Authors: Torres Rodrigo de Oliveira
Published: July 2017

O litoral do Rio Grande do Sul (RS) compreende uma extensa planície arenosa com aproximadamente 640km de extensão no extremo meridional do Brasil, onde podem ser encontradas embarcações encalhadas representativas de diversos períodos da navegação no Atlântico sudoeste. Este artigo traz o relatório de investigações realizadas em dois destes sítios, no âmbito do projeto Sítios Litorâneos de Naufrágios do Litoral do Rio Grande do Sul, Brasil. Os resultados são discutidos em termos da metodologia adotada, da tecnologia da constução naval e das possibilidades de utilização deste registro arqueológico em problemáticas regionais de pesquisa.
Dossiê “Arqueologia clássica hoje: Reflexões contemporâneas”
Authors: Cerqueira Fábio Vergara , Dias Carolina Kesser Barcellos
Published: July 2017

DOSSIÊ “ARQUEOLOGIA CLÁSSICA HOJE: REFLEXÕES CONTEMPORÂNEAS”, inserido no volume 14, número 27, 2017, do Cadernos do LEPAARQ.