bluuebunny/crossref_metadata_2025_split huggingface dataset:
Do institutions matter?
Authors: Ibrahim Habiba 
Published: March 2019

PurposeGuided by the institutional theory of savings, the purpose of this study is to assess the institutional elements of rotating, savings and credit associations (ROSCAs) that enable participants to save.Design/methodology/approachThe study used data from in-depth qualitative interviews (N= 10) conducted among the ROSCA group leaders from African immigrant communities in the USA.FindingsThe primary goal for joining the ROSCA group among participants is to achieve economic stability. The results of the study postulate that, through institutional mechanisms and social networks, ROSCAs create an environment for families to save and invest. The emphasis on the concept of “you cannot save alone” underscores the importance of supportive structures to enable low-income households to save. Although “alternative savings programs” such as ROSCAs are imagined as something that less well-to-do persons use, the findings from this study demonstrate that such strategies also appeal to some people with higher socioeconomic status. This appeal and utility speaks to the importance of ROSCAs as an institutional response, rather than just an informal arrangement among persons known to each other.Research limitations/implicationsIt is prudent to bear in mind that the study sample is not nationally representative, and therefore, the results presented cannot be generalized to immigrants across the country. However, as one of the few ROSCA studies in the USA, the findings from this study make generous contributions to the immigrants’ savings and ROSCA practices literature.Practical implicationsROSCAs could be used as a bridge to the formal financial institutions. Non-profit agencies working with these communities could work with these groups to report ROSCA payments to the major credit bureaus, to help them build a credit line in their new country.Originality/valuePrevious studies of ROSCAs have assessed ROSCAs as community support systems and social networks. The current study has analyzed ROSCAs from an institutional perspective by examining the institutional characteristics of ROSCAs comparable to the institutional determinants of savings that enable savings among the participants.
Post-tensioned concreting: its suitability for and acceptability in Sri Lanka
Authors: Madhubhashana Hewa Siliyange Athushla , Perera B.A.K.S. , Perera Colombapatabendige Savindi Ranthika 
Published: March 2019

Purpose
Many countries have started to use post-tensioned (PT) concrete because of its sustainability and low cost. However, it is not quite popular in Sri Lanka as the required knowhow and technology are not available within the country. By introducing PT concrete to the country, unwanted costs and time overruns could be eliminated from the construction projects. This paper, therefore, aims to identify the suitability and acceptability of PT concreting for/in Sri Lanka.

Design/methodology/approach
An extensive literature review was first carried out to gather knowledge on PT concreting. The four case studies that followed it included eight semi-structured interviews and a document review. Ten expert interviews were conducted finally to strengthen the findings of the literature review and case studies. Cross-case analysis and NVivo 11 content analysis software were used to analyze the data gathered.

Findings
Findings reveal that PT concreting saves cost and time of construction and that it can have a control over the resources required for construction, which makes it environment-friendly. PT concreting allows thinner concrete sections, extended spans, stiffer walls that resist lateral loads and stiffer foundations that resist the effects of shrinking and swelling soils.

Originality/value
It is found that PT concreting is more suitable for the construction industry in Sri Lanka than traditional concreting.
Instagram Stories versus Facebook Wall: an advertising effectiveness analysis
Authors: Belanche Daniel , Cenjor Isabel , Pérez-Rueda Alfredo 
Published: March 2019

Purpose
This paper aims to investigate advertising effectiveness in Instagram and Facebook, the two most important social media platforms. It helps to understand which should be chosen depending on the target audience of the campaign.

Design/methodology/approach
The study examines advertising effectiveness in these social media in terms of ad attitude, ad intrusiveness and loyalty intentions. An online survey was conducted with 303 social media users. Age and gender are proposed as moderators.

Findings
The results indicate that Instagram Stories not only enhances consumer attitude toward ads but also increases perceived intrusiveness, compared to Facebook Wall. Millennials are more disturbed by Facebook Wall ads than non-millennial users. A triple interaction effect reveals that non-millennial men are more loyal toward Facebook Wall ads, whereas millennials of both genders and non-millennial women are more loyal to ads on Instagram Stories.

Practical implications
Advertisers should be aware of the differential features and segmentation possibilities in social media to better address their target audiences. More precisely, the research findings suggest that professionals should focus on Instagram Stories when targeting millennials and non-millennial women, and on Facebook Wall when targeting non-millennial men.

Originality/value
This study is one of the first to contribute to the literature on Instagram Stories as an advertising platform and compare its differential features with those of more established social media, such as Facebook Wall.
Sex differences in pollinator behavior: Patterns across species and consequences for the mutualism
Authors: Smith Gordon P. , Bronstein Judith L. , Papaj Daniel R. 
Published: March 2019

Abstract

Intraspecific variation in floral visitor behaviour and pollination efficiency has been much less studied than interspecific variation. Nevertheless, it is clear that large differences in these traits exist within species, and in particular between sexes within species. With the exception of a few well‐studied interactions, however, the consequences of these differences in the pollinators and visited plants remain to be investigated.

In this review, we document large and consistent differences in the foraging patterns of male and female pollinators that have been demonstrated to directly affect plant reproduction or that have clear potential to do so.

Males and females differ in visitation frequency, type of flowers visited, and per‐visit pollen transfer. Females gather more and different resources from flowers compared to males, and males generally tend to show more mobile foraging patterns than females.

We argue that these sex‐associated patterns have broad generality across pollinators, and that sex‐associated differences can in some cases be larger than differences between species. We offer predictions about how these patterns will influence pollinator preference, specialization, and fidelity, as well as the cost, quality and quantity of pollination service to plants.

In the face of increasing threats to plant–pollinator interactions, understanding their basic functioning and the variation inherent in their component parts is critical. We advocate for more attention to sex‐based differences among pollinators in particular, and the consequences of intraspecific variation more broadly.
Executive control in language production by children with and without language impairment
Authors: Sikora Katarzyna , Roelofs Ardi , Hermans Daan , Knoors Harry 
Published: March 2019

AbstractBackgroundAccumulating evidence suggests that the updating, inhibiting and shifting abilities underlying executive control are important for spoken language production in adults. However, little is known about this in children.AimsTo examine whether children with and without language impairment differ in all or only some of these executive abilities, and whether they show corresponding differences when these abilities are engaged in language production.Methods & ProceduresThirty‐three children with specific language impairment (SLI) and 41 typically developing (TD) children (age matched, aged 8–12 years) completed standard executive control tests that measure the updating, inhibiting and shifting abilities. All children were native speakers of Dutch. Moreover, they performed a noun–phrase production task involving picture description within a picture–word interference paradigm. We measured their production accuracy and speed to assess length, distractor and switch effects, which reflect the updating, inhibiting and shifting abilities underlying executive control.Outcomes & ResultsCompared with TD children, the children with SLI had lower scores on all executive control tests. Moreover, they were overall slower and made more errors in the noun–phrase production task. Additionally, the magnitude of the distractor and switch effects was larger for the SLI than for the TD group.Conclusions & ImplicationsThe results suggest that children with SLI have impaired language production and executive control abilities, and that some of the differences in the executive control abilities between SLI and TD groups were reflected in their language production.
Sustainable financing for climate and disaster resilience in Atoll Islands: Evidence from Tuvalu and Kiribati
Authors: Taupo Tauisi 
Published: March 2019

AbstractThis paper examines the financing of disaster risk management. Future climate and disaster risks are predicted to impose increasing financial pressure on the governments of low‐lying atoll nations. The aftermath of a disaster, such as a cyclone, requires financial means for quick response and recovery. We quantify the appropriate levels of financial support for expected disasters in Tuvalu and Kiribati by building on the Pacific Catastrophe Risk Assessment and Financing Initiative (PCRAFI)‐calculated likely costs for disasters. To these, we add estimates of the potential effects of distant cyclones, droughts, sea‐level rise, climate change and large‐scale disaster shocks as they are predicted to affect low‐lying atoll islands. The present paper focuses on the potential contribution of the sovereign wealth funds (SWF) of Tuvalu and Kiribati in reducing reliance on foreign aid for ex‐post disaster risk management. We forecast the future size of SWF using Monte Carlo simulations. We examine the long‐term sustainability of SWF and the feasibility of extending their mandate for disaster recovery.
Constitutional Directives: Morally‐Committed Political Constitutionalism
Authors: Khaitan Tarunabh 
Published: March 2019

AbstractAbout 37 state constitutions around the world feature non‐justiciable thick moral commitments (‘constitutional directives’). These directives typically oblige the state to redistribute income and wealth, guarantee social minimums, or forge a religious or secular identity for the state. They have largely been ignored in a constitutional scholarship defined by its obsession with the legitimacy of judicial review and hostility to constitutionalising thick moral commitments other than basic rights. This article presents constitutional directives as obligatory telic norms, addressed primarily to the political state, which constitutionalise thick moral objectives. Their full realisation—through increasingly sophisticated mechanisms designed to ensure their political enforcement—is deferred to a future date. They are weakly contrajudicative in that these duties are not directly enforced by courts. Functionally, they help shape the discourse over a state's constitutional identity, and regulate its political and judicial organs. Properly understood, they are a key tool to realise a morally‐committed conception of political constitutionalism.
Attitudes and beliefs of Australian emergency department clinicians on antimicrobial stewardship in the emergency department: A qualitative study
Authors: Goulopoulos Anne , Rofe Olivia , Kong David , Maclean Andrew , O'Reilly Mary 
Published: March 2019

AbstractObjectiveTo explore the attitudes and beliefs of Australian ED clinicians towards antimicrobial stewardship in the ED.MethodsSemi‐structured one‐to‐one interviews were conducted with ED clinicians between March and October 2015. Participants were identified via purposive and snowball sampling. Questionnaires were developed using the literature. Interviews were audio‐recorded, transcribed and analysed using thematic analysis via the framework approach. Two researchers coded independently, with one using QSR International's NVivo 10 software and the other manually. Emergent themes were identified and classified.ResultsTwenty‐two clinicians (eight doctors, eight nurses and six pharmacists) from seven institutions participated. Participants were aware and concerned about antimicrobial resistance. Clinicians were divided based on their opinion on whether antimicrobials are prescribed appropriately and judiciously in the ED, with many perceiving prescribing to be inappropriate. Prior knowledge of the term ‘Antimicrobial Stewardship’ was demonstrated by doctors and pharmacists, with a relative lack of awareness by nurses. Four main themes were identified as both barriers and facilitators to antimicrobial stewardship in the ED: individual healthcare provider, resource, organisational and cultural. Uncertainty of diagnosis, time and resource pressures, reliance on previous experience and lack of access to expert opinion were perceived barriers. To facilitate appropriate prescribing, clinicians emphasised the need for routine education and feedback, adequate staffing, robust guidelines, senior medical clinician advocacy and multidisciplinary support.ConclusionsAustralian ED clinicians were aware of antimicrobial resistance. Many perceive injudicious antimicrobial use as problematic. Consideration of ED clinicians’ perceived barriers and facilitators might enhance implementation of antimicrobial stewardship programmes in EDs.
Hedgehog promotes cell proliferation in the midgut of silkworm, Bombyx mori
Authors: Zhu Shun‐Qin , Zhang Ya‐Jun , Abbas Muhammad Nadeem , Hao Xiang‐Wei , Zhao Yu‐Zu , Liang Hang‐Hua , Cui Hong‐Juan , Yang Li‐Qun 
Published: March 2019

AbstractThe Hedgehog (Hh) signaling pathway is one of the major regulators of embryonic development and tissue homeostasis in multicellular organisms. However, the role of this pathway in the silkworm, especially in the silkworm midgut, remains poorly understood. Here, we report that Bombyx mori Hedgehog (BmHh) is expressed in most tissues of silkworm larvae and that its functions are well‐conserved throughout evolution. We further demonstrate that the messenger RNA of four Hh signaling components, BmHh ligand, BmPtch receptor, signal transducer BmSmo and transcription factor BmCi, are all upregulated following Escherichia coli or Bacillus thuringiensis infection, indicating the activation of the Hh pathway. Simultaneously, midgut cell proliferation is strongly promoted. Conversely, the repression of Hh signal transduction with double‐stranded RNA or cyclopamine inhibits the expression of BmHh and BmCi and reduces cell proliferation. Overall, these findings provide new insights into the Hh signaling pathway in the silkworm, B. mori.
Clinicopathological characteristics, diagnosis, and prognosis of pregnancy‐associated breast cancer
Authors: Wang Bin , Yang Yanfang , Jiang Zhansheng , Zhao Jing , Mao Yiran , Liu Jun , Zhang Jin 
Published: March 2019

BackgroundThe aim of this study was to evaluate the characteristics, diagnosis, prognosis, and effective treatment modalities of pregnancy‐associated breast cancer (PABC).MethodsFrom 1 January 2005 to 31 December 2015, 142 patients with PABC were identified in the Cancer Institute and Hospital of Tianjin Medical University database. The clinicopathological features, treatment methods, and outcomes were retrospectively evaluated.ResultsThe median age at diagnosis was 30 years. All patients presented with a palpable mass in the breast. The sensitivity of ultrasound and mammography in PABC diagnosis was 86% and 83.3%, respectively, which increased to 91.3% when a combination of mammography and ultrasound was used. The median tumor size was 5.5 cm, and 63.1% of patients had associated axillary lymph node metastases. The proportions of ER negative, PR negative and HER2 positive were 45.7%, 45.7% and 30%, respectively. The five‐year overall survival (OS) and disease‐free survival (DFS) rates were 76.8% and 63.5%, respectively. According to univariate analysis, T stage, N stage, and HER2 status were significant prognostic factors for OS and DFS. The time interval between the onset of the first symptom and the first meeting with a health professional was also significant for OS. Multivariate analysis showed that T stage and HER2 status were independent prognostic risk factors for OS and DFS.ConclusionPABC is an aggressive form of breast cancer associated with advanced stage at diagnosis. Despite the existing difficulties in diagnosis, imaging examinations are indispensable. Early diagnosis and multidisciplinary therapy, including anti‐HER2 targeted therapy, may be important to improve prognosis.
Favorable predictors for survival in advanced ALK‐positive non‐small cell lung cancer patients beyond crizotinib resistance
Authors: Xu Haiyan , Yang Guangjian , Yang Lu , Yang Yaning , Ma Di , Li Junling , Hao Xuezhi , Xing Puyuan , Wang Yan 
Published: March 2019

BackgroundCrizotinib has demonstrated favorable efficacy in patients with advanced ALK‐positive non‐small cell lung cancer (NSCLC). Unfortunately, the majority of ALK‐positive patients ultimately develop acquired resistance within one year after the initiation of crizotinib treatment; however, the estimation of overall survival (OS) beyond crizotinib resistance has not yet been fully demonstrated. The purpose of this study was to identify favorable predictors affecting survival outcome.MethodsIn this single‐center retrospective study, the data of 136 patients with advanced ALK‐positive NSCLC beyond crizotinib resistance were analyzed between January 2013 and December 2017. Patients were divided into two groups according to intracranial or extracranial progression on crizotinib, and sequential therapies including crizotinib continuation with local therapy, next‐generation ALK inhibitors, and chemotherapy. The primary endpoint was the median OS duration from the start of crizotinib resistance to death or the last follow‐up. Univariate and multivariate Cox analyses of OS were carried out.ResultsAt the time of analysis, 60 (41.1%) of the 136 patients had died. Median progression free survival (PFS) and OS from the metastatic diagnosis were 10.4 and 41.3 months, respectively. Sequential therapies administered beyond crizotinib treatment were: next‐generation ALK inhibitors (54 patients), chemotherapy (20 patients), and crizotinib continuation with local therapy (62 patients). Multivariate Cox analysis revealed that long PFS with crizotinib (≥ 10.4 months), intracranial progression, and next‐generation ALK inhibitors were significantly associated with a decreased risk of death.ConclusionLong PFS with crizotinib (≥10.4 months), intracranial progression, and use of next‐generation ALK inhibitors might be favorable predictors for OS in advanced ALK‐positive NSCLC patients.
Maintaining a Reputation for Consistently Beating Earnings Expectations and the Slippery Slope to Earnings Manipulation
Authors: Chu Jenny , Dechow Patricia M. , Hui Kai Wai , Wang Annika Yu 
Published: March 2019

ABSTRACTThis paper investigates whether maintaining a reputation for consistently beating analysts' earnings expectations can motivate executives to move from “within GAAP” earnings management to “outside of GAAP” earnings manipulation. We analyze firms subject to SEC enforcement actions and find that these firms consistently beat analysts' quarterly earnings forecasts in the three years prior to the manipulation period and continue to do so by smaller “beats” during the manipulation period. We find that manipulating firms beat expectations around 86 percent of the time in the 12 quarters prior to the manipulation period (versus 75 percent for control firms) and that manipulation often ends with a miss in expectations. We document that executives of manipulating firms face strong stock market and CEO pressure to perform. Prior to the manipulation period, these firms have high analyst optimism, growing institutional interest, and high market valuations, along with powerful CEOs. Further, we find that maintaining a reputation for beating expectations is more important than CEO overconfidence and is incremental to CEO equity incentives for explaining manipulation. Our results suggest that pressure to maintain a reputation for beating analysts' expectations can encourage aggressive accounting and, ultimately, earnings manipulation.
A quantitative framework for investigating the reliability of empirical network construction
Authors: Cirtwill Alyssa R. , Eklöf Anna , Roslin Tomas , Wootton Kate , Gravel Dominique 
Published: March 2019

Abstract

Descriptions of ecological networks typically assume that the same interspecific interactions occur each time a community is observed. This contrasts with the known stochasticity of ecological communities: community composition, species abundances and link structure all vary in space and time. Moreover, finite sampling generates variation in the set of interactions actually observed. For interactions that have not been observed, most datasets will not contain enough information for the ecologist to be confident that unobserved interactions truly did not occur.

Here, we develop the conceptual and analytical tools needed to capture uncertainty in the estimation of pairwise interactions. To define the problem, we identify the different contributions to the uncertainty of an interaction. We then outline a framework to quantify the uncertainty around each interaction by combining data on observed co‐occurrences with prior knowledge. We illustrate this framework using perhaps the most extensively sampled network to date.

We found significant uncertainty in estimates for the probability of most pairwise interactions. This uncertainty can, however, be constrained with informative priors. This uncertainty scaled up to summary measures of network structure such as connectance and nestedness. Even with informative priors, we are likely to miss many interactions that may occur rarely or under different local conditions.

Overall, we demonstrate the importance of acknowledging the uncertainty inherent in network studies, and the utility of treating interactions as probabilities in pinpointing areas where more study is needed. Most importantly, we stress that networks are best thought of as systems constructed from random variables, the stochastic nature of which must be acknowledged for an accurate representation. Doing so will fundamentally change network analyses and yield greater realism.