bluuebunny/crossref_metadata_2025_split huggingface dataset:
Copycats vs. Original Mobile Apps: A Machine Learning Copycat-Detection Method and Empirical Analysis
Authors: Wang Quan , Li Beibei , Singh Param Vir 
Published: April 2018

While the growth of the mobile apps market has created significant market opportunities and economic incentives for mobile app developers to innovate, it has also inevitably invited other developers to create rip-offs. Practitioners and developers of original apps claim that copycats steal the original app’s idea and potential demand, and have called for app platforms to take action against such copycats. Surprisingly, however, there has been little rigorous research analyzing whether and how copycats affect an original app’s demand. The primary deterrent to such research is the lack of an objective way to identify whether an app is a copycat or an original. Using a combination of machine learning techniques such as natural language processing, latent semantic analysis, network-based clustering, and image analysis, we propose a method to identify apps as original or copycat and detect two types of copycats: deceptive and nondeceptive. Based on the detection results, we conduct an econometric analysis to determine the impact of copycat apps on the demand for the original apps on a sample of 10,100 action game apps by 5,141 developers that were released in the iOS App Store over five years. Our results indicate that the effect of a specific copycat on an original app’s demand is determined by the quality and level of deceptiveness of the copycat. High-quality nondeceptive copycats negatively affect demand for the originals. By contrast, low-quality, deceptive copycats positively affect demand for the originals. Results indicate that in aggregate the impact of copycats on the demand of original mobile apps is statistically insignificant. Our study contributes to the growing literature on mobile app consumption by presenting a method to identify copycats and providing evidence of the impact of copycats on an original app’s demand. The online appendix is available at https://doi.org/10.1287/isre.2017.0735 .
Noise as Signal in Learning from Rare Events
Authors: Maslach David , Branzei Oana , Rerup Claus , Zbaracki Mark J. 
Published: April 2018

Firms increasingly have access to information about the failure events of other firms through public repositories. We study one such repository that accumulates reports of adverse events in the medical device industry. We provide qualitative evidence that shows how firms select a sample of adverse events and then engage in inferential learning. We show that firms use the reports of others to extract new valid knowledge from the adverse events in other firms. We use quantitative evidence to explore how a public repository can be used to provide more direct evidence of vicarious learning. Our findings challenge some standard assumptions about vicarious learning. First, we show that the learning in a repository does not come from referent others. Instead, it emerges directly from failure events that might ordinarily be dismissed as noise. Second, we show that the learning does not come from copying others. Instead, it is constructed by firm members as they assemble individual failure events to identify possibilities they had not considered. Third, in contrast to vicarious learning, where the referent others and rare events provide the context, repository-based learning requires that actors impose their own context as part of the learning process. Our qualitative and quantitative evidence serve explanatory purposes by showing how firms use a repository of failure events to identify moments of valid learning, and they serve exploratory purposes by investigating how we can demonstrate reliable learning from a repository of failure events. The e-companion is available at https://doi.org/10.1287/orsc.2017.1179 .
What Do They Know? The Antecedents of Information Accuracy Differentials in Interorganizational Networks
Authors: Knoben Joris , Oerlemans Leon A. G. , Krijkamp Annefleur R. , Provan Keith G. 
Published: April 2018

A growing body of network studies argues that firms purposefully act based on the network structure and their relative position in it. In this paper, we assess the validity of one of the core assumptions underpinning these arguments: that managers have accurate information about the structure of the network in which their organizations are embedded. We extend theory on interorganizational networks by developing novel hypotheses regarding the antecedents of differences in this network information accuracy between organizations. We test these hypotheses by drawing on a unique data set of two whole networks in the healthcare industry in the Netherlands in which both the “objective” network structure and the organizational perceptions of that structure are assessed. The empirical analyses revealed considerable differences among organizations in terms of the accuracy of their network information, especially with regard to accuracy about different parts of the network. A key finding is that the network position of the focal and the assessed organizations is essential for explaining information accuracy differentials. From these findings, we discuss which network strategies are viable strategic options for which organizations and derive implications for future network theory and research. The e-companion is available at https://doi.org/10.1287/orsc.2017.1180 .
Patient-centred goal setting in a hospice: a comparative case study of how health practitioners understand and use goal setting in practice
Authors: Boa Sally , Duncan Edward , Haraldsdottir Erna , Wyke Sally 
Published: April 2018

Background: Goal setting is recognised as an important way of supporting people to live as actively as possible until death. However, there is little agreement about how goal setting should be handled or delivered by health professionals in everyday practice. Aim: To investigate health-care practitioners' understanding and practice of patient-centred goal setting in a hospice. Methods: A comparative case study of 10 healthcare practitioners in one hospice. Non-participant observations (n=28), semi-structured interviews (n=10) and case-note analysis (n=67) were undertaken. Data were analysed using framework analysis. Results: Participants viewed goal setting as part of routine practice. However, goal setting focused around what was seen as important from the health practitioner's perspective, rather than being patient-centred. Participants' goal-setting practice was implicit and opportunities to support patients to pursue goals were missed. Participants emphasised problem solving and alleviating symptoms rather than focusing on patient priorities and establishing patient-centred goals. Conclusion: While goal setting is valued, it is practiced in an implicit, practitioner-centred and inconsistent manner. A more explicit, person-centred goal setting process may support practitioners more consistently in helping patients to identify their priorities and enhance their quality of life.
Making/drawing with words: Form as text, text as form (un-writing and re-writing form)
Authors: Ionascu Adriana 
Published: April 2018

Abstract
Digital making in ceramics can be approximated to a form of drawing.This project considered the possibility of forming clay using the Rhino programme as a drawing tool by way of adopting drawing into a craft-based process. This paper reflects on the nature of digital drawing as a word-led rather than bodily-led process in generating three-dimensional form – a method of hand-making or hand-writing in ceramic craft. It therefore explores form-finding by means of a drawing process of composing and crafting with words. The article examines the physicality and meaning of words derived from actions related to hand-making and the sensorial nature of a written, embodied language. It considers the translation of three-dimensional form from performative word-acts of hand-making (rolling, folding, bending, twisting, splitting, wrapping, binding, joining, bonding, stretching, etc.) into a digital vocabulary of drawing commands (rotate, curve, arrange, expand, cut, multiply, etc.). The exercise signals the difference between sensorial renderings and digital readings in craft and drawing practice, contemplating the role of the language in-between. In doing so, it questions the significance of digital drawing in the context of ceramic craft as an approach to generating three-dimensional physical form.
ENDOCRINE DISRUPTORS: BISPHENOL A AND ITS RELATION WITH OBESITY
Authors: Sá Lucas Wanderley Rodrigues Gonçalves de S , Sousa Luciano Nunes de , Marques Thyciara Fontenele , Bernardo Gabriel Pereira , Bernardo Lorena Pereira , Parente Lucas Leimig Telles , Parente Rodrigo Emmanuel Leimig Telles , Telles Maria Valéria Leimig , Malheiro Djailson Ricardo 
Published: April 2018

The prevalence of obesity is, worldwide, in wide intensification. This increase stimulates the search for new hypotheses that explain the genesis of the metabolic syndrome. This article seeks to clarify the obesogenic hypothesis of bisphenol A (BPA), based on its endocrine disrupting potential. Methodology: For the development of the present study, the Scopus and PubMed databases were used, from descriptors generated by the DeCS: Endocrine Disruptors; Foods; Obesity; Bisphenol A and its correspondents in English. Randomized and controlled trials were considered eligible, focusing on publications in English and Portuguese. The survey was conducted on April 11, 2017, with publications of the last five years being leaked. Based on this, 87 articles were obtained and, from the reading of the title and its abstracts, 26 publications were selected. After the complete reading of the 26 articles selected, 18 articles were obtained that served as a basis for this bibliographic review. Bisphenol A appears as an important agent that causes obesity in the contemporary world, interfering in the signaling mechanism of the endocrine system, being its high exposure linked to many of the habits present in the current context. Conclusion: Based on the possible consequences of bisphenol A, the reduction of human exposure to the compound should be considered. Based on this, alternatives to BPA in the production of industrial plastic polymers have to be considered since increased exposure to the endocrine disruptor is closely related to industrial production. Keywords: Endocrine Disruptors, Obesity, Bisphenol A
Effect of ozonized olive oil on oral levels of Candida spp. in patients with denture stomatitis
Authors: Crastechini Erica , Koga-Ito Cristiane Yumi , Machado Suzan de Fátima , Teodoro Guilherme Rodrigues , Back-Brito Graziella Nuernberg , Sangalli Jorgiana , Dias Almeida Janete 
Published: April 2018

Objective: The aim of this study was to evaluate the effect of ozonized oil (OZ) on the oral levels of Candida spp. in patients with denture stomatitis. Material and Methods: In vitro tests were performed to validate antifungal activity and to standardize OZ conditions. Antifungal activity was screened against C. albicans and five non-albicans species (C. tropicalis, C. dubliniensis, C. krusei, C. guilliermondii, and C. parapsilosis). Also, the effects on C. albicans planktonic and biofilm were evaluated. After validation, OZ was included in a therapeutic protocol of denture stomatitis in vivo. Thirty patients used OZ and 20 used sodium bicarbonate (SB) for 14 days. After 7 and 14 days, clinical evaluation, isolation and identification of yeasts were performed. Isolates were identified by phenotypic and genotypic tests. Ozonized oil showed in vitro antifungal activity against all species of Candida. Ozonized oil reduced the number of viable cells in C. albicans biofilms. Oral candidal levels were lower in relation to baseline both after after 14 days of treatment with SB and OZ. Results: A total of 493 Candida spp. isolates was obtained and 80% were identified as C. albicans. Remission of denture stomatitis was observed in all patients after 7 days of treatment in both groups. Conclusion: Within the limits of the study we can conclude that ozonized olive oil can be a new alternative for the control of biofilm in patients with denture stomatitis. KeywordsOzone; Candida; Antifungal Agents; Stomatitis; Denture.
Evaluation of dimensional stability and details reproduction of alginate molds storage in different times and temperature
Authors: Penfold Rafael da Rocha Santos , Brandt William Cunha , Miranda Milton Edson , Vitti Rafael Pino 
Published: April 2018

Objective: The aim of this study was to evaluate dimensional stability and detail reproduction in alginate molds stored at different times and temperatures. Material and Methods: Three different commercially available alginates (Cavex Color Change, Jeltrate Plus and Hydrogum 5) were tested at four different times (0 - control, 1, 3 and 5 days) and two temperatures (25ºC and 37ºC) (n=5). The alginates were handled following the manufacturer's instructions. The impression procedures occurred in an environment with controlled room temperature (25ºC) and relative humidity (50±5%). A metallic model (ISO 1563:1990) was used to perform the impressions. The tray containing alginate remained on the metallic model under constant pressure (2 kgf) until the alginate gelation process. The molds were stored (different times and temperatures) and analyzed in stereomicroscope at 30x magnification and 0.5 ?m accuracy (Olympus Measuring Microscope STM). The molds and the metallic model measurements were compared, and the data were statistically analyzed by Kolmogorov-Smirnov and three-way ANOVA tests, and the means were compared by Tukey test (5%). Results: The results showed no double interactions (p>0.05) and the different alginates presented statistically similar values of dimensional stability (p=0.102). However, 25ºC (temperature) and control group (time) showed the highest values of dimensional stability (p<0.05). Jeltrate Plus was the only material that presented inaccuracy in details reproduction. Conclusion: It is recommended that, for tested alginates, the stone casts should be poured immediately, even though the molds are dimensionally stable up to 5 days when stored at 25ºC. KeywordsDental impression materials; Dimensional measurement accuracy; Shrinkage.
Effects of intracanal medicaments and the remaining cavity wall on fracture strength of endodontically treated molars
Authors: Olcay Keziban , Coban Ata Nisa , Belli Sema 
Published: April 2018

Objective: The aim of this study was to investigate the effects of the short-term intracanal application of two medicaments on the fracture strength of root-filled molar teeth with different levels of tooth structure loss. Material and Methods: Standard access cavities of totally 84 intact maxillary molar teeth were prepared in 72 teeth and were divided into 3 main groups. Standard access cavities were kept in the first group, while mesio-occlusal-distal cavities (MOD) were prepared in the second and third groups. One-half of the palatinal walls were removed in the third group. Twelve sound teeth were used in the fourth group as control. Each group was then assigned into two subgroups according to the medicament used (n=12): 2% chlorhexidine gel and calcium hydroxide. Samples were stored at 37°C and 100% humidity for 1 week. Then the teeth were inserted into a universal testing machine and vertically loaded (5 mm/min) from the occlusal surface. The data was recorded in Newtons and statistically evaluated using a Univariate ANOVA and a Tukey as post hoc test. Results: A significant difference was found among the test groups (p<0.01). No significant difference was found according to the medicament used (p>0.05), however the number of remaining walls significantly affected the fracture strength (p<0.01). The first group with access cavity showed mostly repairable fractures (60%–80%) whereas the others showed mostly non-repairable fracture patterns (60%–90%). Conclusion: In conclusion, the fracture strength of endodontically treated teeth is related to the structure loss rather than the intracanal medicament used. KeywordsEndodontically treated teeth; Fracture strength; Intracanal medicament; Remaining cavity wall; Root facture.
Prefabricated composite resin veneers: a clinical case report
Authors: De Araújo Amanda Oliveira , Manta Davi Farias , Lopes Mário José Pinto , Pedrosa Marlus da Silva , Da Silva Claudio Heliomar Vicente , Durão Márcia de Almeida 
Published: April 2018

The authors present a complete clinical case report of functional and aesthetic rehabilitation of the smile harmony of a 23-year-old male patient through periodontal plastic surgery, tooth bleaching and prefabricated composite resin veneers, emphasizing the advantages, limitations and patient’s perceptions about the treatment. After clinical and radiographic evaluations, extra and intra-oral photographs were taken, plaster study models were obtained, digital smile design and diagnostic wax-up were performed. The patient accepted and authorized the proposed dental procedures. The treatment proved to be effective, being a practical and safe approach, with aesthetic recovery of the smile harmony and patient satisfaction. KeywordsDental esthetics; Tooth bleaching; Dental veneers; Composite resin.
Lie symmetry analysis for the solution of first-order linear and nonlinear fractional differential equations
Authors: Ilie Mousa , Biazar Jafar , Ayati Zainab 
Published: April 2018

Obtaining analytical or numerical solution of fractional differential equations is one of the troublesome and challenging issues among mathematicians and engineers, specifically in recent years. The purpose of this paper is to solve linear and nonlinear fractional differential equations such as first order linear fractional equation, Bernoulli, and Riccati fractional equations by using Lie Symmetry method, based on conformable fractional derivative. For each equation, some numerical examples are presented to illustrate the proposed approach.Â Â
ANALISIS KELAYAKAN DAN STRATEGI PENGEMBANGAN WILAYAH DALAM WACANA PEMBENTUKAN DAERAH OTONOM BARU BOGOR TIMUR
Authors: Nurhasanah Aan , Juanda Bambang , Putri Eka Intan Kumala 
Published: April 2018

ABSTRACTBogor District as one of large region and large number of population has any problems related to accesibility and equity welfare. Regional proliferation considered as a way to overcome that problems. The study used scoring method based on PP no. 78 2007 with descriptive analysis, location quotient analysis, and Klassen Tiphology. This study was aimed to analyzed feasibility of regional proliferation and to formulate regional development strategy based on economic potentials in eastern Bogor District region. In general the result showed that eastern Bogor District region appropriate to organize as an autonomous region. High economic potential and fiscal cappacity of eastern Bogor region can be made as main factor to recommended eastern Bogor District region as an autonomous region. Thus, the selected strategies are how to develop backward regions base on leading sector, support primary sector development such as agricultural. Goverment policy is important to optimize natural resources management, spread out infrastructure development mainly to support rural area development. The implication of policy directed base on each region characters such as social, culture, spatial, basic sector. Furthermore regional development analysis can be set base on sub-district region.
Regulation of α7Nicotinic Acetylcholine Receptors in the Developing Rat Somatosensory Cortex by Thalamocortical Afferents
Authors: Broide Ron S. , Robertson Richard T. , Leslie Frances M. 
Published: April 2018

Distributions of α7nicotinic acetylcholine receptor (nAChR) mRNA and [125I]α-bungarotoxin (α-BTX) binding sites in the developing rat somatosensory cortex were characterized in relation to acetylcholinesterase (AChE) histochemical staining of thalamocortical terminals to investigate the role of this receptor in cortical development. Using quantitativein situhybridization and receptor autoradiography, elevated levels of mRNA and binding-site expression were first detected at postnatal day 1 (P1) in deep and superficial layers, just beneath the AChE-stained thalamocortical terminals. Onset of expression occurred ∼1 d after ingrowth of AChE-stained thalamocortical afferents. By P5, mRNA and binding-site expression exhibited a disjunctive, barrel-like pattern in layer IV and, more clearly, in layer VI. The mRNA and binding-site expressions peaked at ∼1 week postnatal and then declined to adult levels. Unilateral electrolytic or cytochemical lesions placed in the thalamic ventrobasal complex at P0 (just as thalamocortical afferents are innervating the cortex) and at P6 (when the somatotopic map is well established) resulted in a marked reduction of α7nAChR mRNA and [125I]α-BTX binding-site levels in layers IV and VI, indicating their regulation by thalamocortical afferents. With P6 lesions, this reduction was observed as early as 6 hr postlesion. These results suggest that α7nAChRs are localized primarily on cortical cells in rat somatosensory cortex and provide further evidence for thalamocortical influence on cortical ontogeny. These data also suggest a role for cholinergic systems during a critical period of cortical synaptogenesis.
Cholinergic-Dependent Plateau Potential in Hippocampal CA1 Pyramidal Neurons
Authors: Fraser Douglas D. , MacVicar Brian A. 
Published: April 2018

Cholinergic stimulation of the hippocampal formation results in excitation and/or seizure. We report here, using whole-cell patch-clamp techniques in the hippocampal slice (34–35°C), a cholinergic-dependent slow afterdepolarization (sADP) and long-lasting plateau potential (PP). In the presence of 20 μmcarbachol, action potential firing evoked by weak intracellular current injection elicited an sADP that lasted several seconds. Increased spike firing evoked by stronger depolarizing stimuli resulted in long-duration PPs maintained close to −20 mV. Removal of either Na+or Ca2+from the external media, intracellular Ca2+([Ca2+]i) chelation with 10 mmbis(2-aminophenoxy)ethane-N,N,N′,N′-tetra-acetic acid, or the addition of 100 μmCd2+to the perfusate abolished both the sADP and PP. The sADP was depressed and the PP was abolished by either 10 μmnimodipine or 1 μmω-conotoxin, whereas 1.2 μmtetrodotoxin was ineffective. The involvement of a Na+/Ca2+exchanger was minimal because both the sADP and PP persisted after equimolar substitution of 50 mmLi+for Na+in the external media or reduction of the bath temperature to 25°C. Finally, in the absence of carbachol the sADP and PP could not be evoked when K+channels were suppressed, suggesting that depression of K+conductances alone was not sufficient to unmask the conductance. Based on these data, we propose that a Ca2+-activated nonselective cation conductance was directly enhanced by muscarinic stimulation. The sADP, therefore, represents activation of this conductance by residual [Ca2+]i, whereas the PP represents a novel regenerative event involving the interplay between high-voltage-activated Ca2+channels and the Ca2+-activated nonselective cation conductance. This latter mechanism may contribute significantly to ictal depolarizations observed during cholinergic-induced seizures.