bluuebunny/crossref_metadata_2025 huggingface dataset:
Consumption through the ambivalent prism of intergenerational support
Authors: Karanika Katerina , Hogg Margaret K.
Published: May 2016

Purpose

This paper aims to examine how ambivalence and intergenerational support intersect with consumption in experiences of sharing within the family.

Design/methodology/approach

Consumer research studies usually use one of two family paradigms (i.e. solidarity and conflict), but the role of ambivalence in family ties is often neglected. This paper examines how ambivalence relates to adult intergenerational support, specifically within the context of sharing, consumption and family identity. In contrast to consumer research studies, sociological studies identify the intersection between intergenerational ambivalence and intergenerational support within family life. This study draws on sociology literature to interpret data from phenomenological interviews with downwardly mobile Greek consumers involved in familial intergenerational support and sharing. The voices of adult recipients and providers of resources are captured, and the transcribed interview texts are analysed using a phenomenological-hermeneutical process.

Findings

Three types of consumer ambivalence were identified that reflected different types of conflicts between consumption choices and different levels of family identity (collective, relational and individual).

Research limitations/implications

Future research should explore ambivalence and family sharing in different family structures and during different transitions. Future research should also investigate how this study’s findings resonate in societies less affected by austerity measures with stronger welfare states that nevertheless experience a rise in intergenerational support.

Originality/value

The study problematises previously somewhat polarised (i.e. positive vs bleak) views of the family in consumer research. Family sharing is highlighted as a major antecedent to consumer ambivalence, and different types of consumer ambivalence within intergenerational relationships within families are conceptualised. This paper proposes an extended typology of coping strategies aligned along a practical–emotional continuum.
Why doesn’t our branding pay off: optimising the effects of branding through innovation
Authors: Lee Wai Jin (Thomas) , O’Cass Aron , Sok Phyra
Published: May 2016

Purpose

Recent branding failures (e.g. Kodak and Krispy Kreme) have cast considerable doubt on the widely accepted contention that to develop a strong brand, firms must continuously strive to be brand oriented or innovation oriented. This study aims to examine the curvilinear and interactive effects of brand orientation and innovation orientation on brand performance.

Design/methodology/approach

Survey data were drawn from a sample of 181 firms operating in the consumer goods sector (i.e. fashion, consumer electronics and automobile) and tested through a hierarchical regression analysis.

Findings

This study finds that the sole and exclusive focus on either brand orientation or innovation orientation is detrimental to the realisation of superior brand performance because increased levels of this focus lead to diminishing returns. Critically, this study finds that the key to achieving superior brand performance lies in the extent to which the firm integrates both brand orientation and innovation orientation.

Originality/value

This study extends current knowledge by showing that focusing on either brand orientation or innovation orientation in isolation is actually detrimental to the firm’s realisation of superior brand performance. The integration of brand orientation and innovation orientation is the key to achieving superior brand performance because the inherent limitations associated with each are overcome by their integration.
Reducing cost of energy in the offshore wind energy industry
Authors: Stentoft Jan , Narasimhan Ram , Poulsen Thomas
Published: May 2016

Purpose

To support ongoing industry efforts to reduce the cost of energy (CoE) of offshore wind compared to other types of energy sources, researchers are applying scientific models and thought processes to identify potential areas of improvement and optimization. This paper aims to introduce a conceptual framework from a supply chain management (SCM) perspective, aimed at promoting the reduction of CoE in the offshore wind energy industry.

Design/methodology/approach

Using conceptual arguments from current academic literature in SCM, a comprehensive framework is presented that clarifies how SCM practices can be used by offshore wind energy industry to reduce CoE.

Findings

The offshore wind energy sector is a young industry that must reduce CoE to compete with other forms of energy. Applying a supply chain perspective in the offshore wind industry has hitherto been limited to the academic community. This paper offers a SCM framework that includes three interdependent aspects of reducing CoE – innovation, industrialization and supplier partnering – to guide the industry towards sources to reduce CoE.

Research limitations/implications

SCM is a broad research area; thus, the presented framework to reduce the CoE is open for further development.

Practical implications

The paper provides insights into how the CoE can be reduced through innovation, industrialization and partnering in the offshore wind energy supply chain.

Originality/value

The paper offers a seminal contribution by introducing a SCM framework to understand sources and approaches to reduce CoE in the offshore wind energy industry.
Analysis of composite bolted joints by a macro-modelling approach
Authors: Lampeas G. , Perogamvros N.
Published: May 2016

Purpose

– The purpose of this paper is the development and the assessment of detailed and macro-modelling methodology approaches, suitable for the analysis of composite material bolted joints.

Design/methodology/approach

– A benchmark single-lap, single-bolt composite joint configuration is investigated, in order to demonstrate the different joint analysis approaches which are applicable in advanced riveted/bolted parts of aeronautical structures. In particular, several joint macro-models, i.e. numerical and analytical ones, as well as a detailed three-dimensional FE solid joint representation, were developed and compared in terms of stiffness prediction, while they were validated using respective experimental results. In addition, the numerical macro-model is implemented in a full scale, multi-bolt fuselage panel in order to demonstrate its capability to efficiently predict the panel’s response under compressive loads.

Findings

– Good correlation was observed between the majority of the models’ predictions and the relative experimental data regarding the lap joint configuration, while the simplified numerical macro-model showed some discrepancies due to the contact instabilities, which, however, may be accepted taking into account the remarkable solution time reductions. In the same manner, the FE macro-model illustrates sufficient accuracy in the prediction of the panel’s response, while, simultaneously, it maintains a low CPU time.

Originality/value

– The present study is part of Nikolaos Perogamvros’ doctoral thesis, an original research work. There are very limited literature papers which include the development and the assessment of different efficient and detailed composite joint analysis approaches, regarding their accuracy and efficiency in the stiffness prediction of a composite bolted joint configuration, as well as on the prediction of a multi-bolt panel’s response.
Searching web documents using a summarization approach
Authors: Qumsiyeh Rani , Ng Yiu-Kai
Published: May 2016

Purpose

The purpose of this paper is to introduce a summarization method to enhance the current web-search approaches by offering a summary of each clustered set of web-search results with contents addressing the same topic, which should allow the user to quickly identify the information covered in the clustered search results. Web search engines, such as Google, Bing and Yahoo!, rank the set of documents S retrieved in response to a user query and represent each document D in S using a title and a snippet, which serves as an abstract of D. Snippets, however, are not as useful as they are designed for, i.e. assisting its users to quickly identify results of interest. These snippets are inadequate in providing distinct information and capture the main contents of the corresponding documents. Moreover, when the intended information need specified in a search query is ambiguous, it is very difficult, if not impossible, for a search engine to identify precisely the set of documents that satisfy the user’s intended request without requiring additional information. Furthermore, a document title is not always a good indicator of the content of the corresponding document either.

Design/methodology/approach

The authors propose to develop a query-based summarizer, called QSum, in solving the existing problems of Web search engines which use titles and abstracts in capturing the contents of retrieved documents. QSum generates a concise/comprehensive summary for each cluster of documents retrieved in response to a user query, which saves the user’s time and effort in searching for specific information of interest by skipping the step to browse through the retrieved documents one by one.

Findings

Experimental results show that QSum is effective and efficient in creating a high-quality summary for each cluster to enhance Web search.

Originality/value

The proposed query-based summarizer, QSum, is unique based on its searching approach. QSum is also a significant contribution to the Web search community, as it handles the ambiguous problem of a search query by creating summaries in response to different interpretations of the search which offer a “road map” to assist users to quickly identify information of interest.
How can participatory design inform the design and development of innovative technologies for autistic communities?
Authors: Brosnan Mark , Parsons Sarah , Good Judith , Yuill Nicola
Published: May 2016

Purpose

– The purpose of this paper is to reflect upon on the opportunities and challenges of engaging with a wide variety of stakeholders during the design, development and evaluation of innovative technologies for people with autism. Autism is defined in part by difficulties in social communication and interaction, and is therefore particularly pertinent when considering the opportunities and challenges of participatory design (PD).

Design/methodology/approach

– A series of presentations from key researchers and practitioners are reviewed, highlighting contemporary issues about how technologies have been designed to improve educational support using a range of methods and processes for stakeholder involvement.

Findings

– Involvement per se does not constitute engagement as a design partner. The interdisciplinary nature of PD, combined with the viewpoints of communities beyond academia, need to be integrated in a manner that allows for different perspectives and voices, and for the “trace” of the contribution to be evidenced. The level of evidence required for demonstrating effective support needs to be considered in terms of both the outcomes of projects and the processes for involving stakeholders in PD.

Originality/value

– This paper offers an up-to-date insight from lead researchers into key debates about the benefits and challenges of PD with autistic people and the broader autism community. Its value lies in raising questions about, and discussing evidence that challenges, some of the assumptions that underpin both PD processes and the needs of the autistic community.
Fundamentals, momentum, and bubbles in experimental asset markets
Authors: Collins Sean M , Brink Alisa G.
Published: May 2016

Purpose

– The purpose of this paper is to report the results of a study concerning how fundamental-motivated investors, and their subsequent impact on the path of prices, affect the severity of price bubbles in an experimental laboratory asset market.

Design/methodology/approach

– In a laboratory experiment, asset markets are manipulated by systematically replacing inexperienced human traders with automated traders programmed to submit bids and asks at fundamental value.

Findings

– When traders in a market are automated to invest on fundamentals, deviations from fundamental value are initially suppressed, but reappear when automated traders cease to influence prices. A significant reduction in the severity of the resulting bubble may be attributed to the interaction of automated traders and humans through the initial path of prices when controlling for changes in liquidity. This reduction corresponds to reduced autocorrelation in the time series of returns.

Originality/value

– This paper represents the first attempt (to the authors’ knowledge) to extend the intervention approach of the seminal paper by Smith et al. (1988) to systematically study the extent to which manipulation of initial path of prices impacts the formation and magnitude of bubbles in the laboratory.
Securitisation and banking risk: what do we know so far?
Authors: Kara Alper , Ozkan Aydin , Altunbas Yener
Published: May 2016

Purpose

– Bank securitisation is deemed to have been a major contributing factor to the 2007/2008 financial crises via fuelling credit growth accompanied by lower banks’ credit standards. Yet, prior to the crisis a common view was that securitisation activity makes the financial system more stable as risk was more easily diversified, managed and allocated economy-wide. The purpose of this paper is to review the extant literature to explore the so far generated knowledge on the impact of securitisation on banking risks. In particular, the authors examine the theoretical arguments and empirical studies on securitisation and banking risks before and after the global financial crisis of 2007/2008.

Design/methodology/approach

– Review and discussion of the literature.

Findings

– Theoretical literature univocally accentuate the undesirable consequences of securitisation, which may promote retention of riskier loans, undermine banks’ screening and monitoring incentives and enhance banks’ risk appetite. However, empirical evidence does not uniformly support the theoretical conclusions. If banks are securitisation active they lend more to risky borrowers, have less diversified portfolios and hold less capital, retain riskier loans and are aggressive in loan pricing. Others argue that securitisation reduces banks insolvency risk, increases profitability, provides liquidity and leads to greater supply of loans. Mortgage securitisation is an area where there is consistent evidence of bank risk taking via securitisation.

Originality/value

– The paper identifies open issues for future research.
Macro Theory and the Study of Political Development
Authors: Fukuyama Francis
Published: May 2016

This article is based on the Skytte Prize lecture delivered at the University of Uppsala in October 2015.
Kindness in Australia: an empirical critique of moral decline sociology
Authors: Habibis Daphne , Hookway Nicholas , Vreugdenhil Anthea
Published: May 2016

A new sociological agenda is emerging that interrogates how morality can be established in the absence of the moral certainties of the past but there is a shortage of empirical work on this topic. This article establishes a theoretical framework for the empirical analysis of everyday morality drawing on the work of theorists including Ahmed, Bauman and Taylor. It uses the Australian Survey of Social Attitudes to assess the state and shape of contemporary moralities by asking how kind are Australians, how is its expression socially distributed, and what are the motivations for kindness. The findings demonstrate that Australians exhibit a strong attachment and commitment to kindness as a moral value that is primarily motivated by interiorized sources of moral authority. We argue these findings support the work of theorists such as Ahmed and Taylor who argue authenticity and embodied emotion are legitimate sources of morality in today's secular societies. The research also provides new evidence that generational changes are shaping understandings and practices of kindness in unexpected ways.
Assessing a doctor you've rarely worked with: The use of workplace‐based assessments in a busy inner city emergency department
Authors: Jones Christopher L , Nanda Reoch
Published: May 2016

Objective

Historically, end‐of‐term assessments for Junior Medical Officers in our ED have been completed by nominated Consultants based on varying amounts of observation in addition to feedback from other health professionals. Our hypothesis is that this system of assessment is both inconsistent and unreliable. Our objective was to increase the validity of our assessment process using workplace‐based assessments linked specifically to the domains set out in the Australian Medical Council intern assessment form.

Methods

Current practice was established using an online survey. Workplace‐based assessments were then performed on each junior doctor throughout the course of a term. A repeat survey at the end of term was used to audit the use of the workplace‐based assessments and their effect on the adequacy of the assessments.

Results

Almost three quarters of our Consultants used workplace‐based assessments as part of their end‐of‐term assessment. Overall, 80% of Consultants agreed that the Junior Medical Officers assessment process was improved when using workplace‐based assessments as an adjunct.

Conclusion

Workplace‐based assessments improve the validity of end‐of‐term assessments for junior doctors in an ED as perceived by those performing the assessment.
Critical considerations for the application of environmental DNA methods to detect aquatic species
Authors: Goldberg Caren S. , Turner Cameron R. , Deiner Kristy , Klymus Katy E. , Thomsen Philip Francis , Murphy Melanie A. , Spear Stephen F. , McKee Anna , Oyler‐McCance Sara J. , Cornman Robert Scott , Laramie Matthew B. , Mahon Andrew R. , Lance Richard F. , Pilliod David S. , Strickler Katherine M. , Waits Lisette P. , Fremier Alexander K. , Takahara Teruhiko , Herder Jelger E. , Taberlet Pierre
Published: May 2016

Species detection using environmental DNA (eDNA) has tremendous potential for contributing to the understanding of the ecology and conservation of aquatic species. Detecting species using eDNA methods, rather than directly sampling the organisms, can reduce impacts on sensitive species and increase the power of field surveys for rare and elusive species. The sensitivity of eDNA methods, however, requires a heightened awareness and attention to quality assurance and quality control protocols. Additionally, the interpretation of eDNA data demands careful consideration of multiple factors. As eDNA methods have grown in application, diverse approaches have been implemented to address these issues. With interest in eDNA continuing to expand, supportive guidelines for undertaking eDNA studies are greatly needed.

Environmental DNA researchers from around the world have collaborated to produce this set of guidelines and considerations for implementing eDNA methods to detect aquatic macroorganisms.

Critical considerations for study design include preventing contamination in the field and the laboratory, choosing appropriate sample analysis methods, validating assays, testing for sample inhibition and following minimum reporting guidelines. Critical considerations for inference include temporal and spatial processes, limits of correlation of eDNA with abundance, uncertainty of positive and negative results, and potential sources of allochthonous DNA.

We present a synthesis of knowledge at this stage for application of this new and powerful detection method.
Environmental signaling: from environmental estrogens to endocrine‐disrupting chemicals and beyond
Authors: McLachlan J. A.
Published: May 2016

The landmark report (Herbst et al. 1971) linking prenatal treatment with a synthetic estrogen, diethylstilbestrol (DES), to cancer at puberty in women whose mothers took the drug while pregnant ushered in an era of research on delayed effects of such exposures on functional outcomes in offspring. An animal model developed in our laboratory at the National Institute of Environmental Health Sciences confirmed that DES was the carcinogen and exposure to DES caused, as well, functional alterations in the reproductive, endocrine, and immune systems of male and female mice treated in utero. DES was also being used in agriculture and we discovered, at the first meeting on Estrogens in the Environment in 1979 (Estrogens in the Environment, 1980), that many environmental contaminants were also estrogenic. Many laboratories sought to discern the basis for estrogenicity in environmental chemicals and to discover other hormonally active xenobiotics. Our laboratory elucidated how DES and other estrogenic compounds worked by altering differentiation through epigenetic gene imprinting, helping explain the transgenerational effects found in mice and humans. At the Wingspread Conference on the Human‐Wildlife Connection in 1991 (Advances in Modern Environmental Toxicology, 1992), we learned that environmental disruption of the endocrine system occurred in many species and phyla, and the term endocrine disruption was introduced. Further findings of transgenerational effects of environmental agents that mimicked or blocked various reproductive hormones and the ubiquity of environmental signals, such as bisphenol A increased concern for human and ecological health. Scientists began to look at other endocrine system aspects, such as cardiovascular and immune function, and other nuclear receptors, with important observations regarding obesity and metabolism. Laboratories, such as ours, are now using stem cells to try to understand the mechanisms by which various environmental signals alter cell differentiation. Since 2010, research has shown that trauma and other behavioral inputs can function as ‘environmental signals,’ can be encoded in gene regulation networks in a variety of cells and organs, and can be passed on to subsequent generations. So now we come full circle: environmental chemicals mimic hormones or other metabolic signaling molecules and now behavioral experience can be transduced into chemical signals that also modify gene expression.
Supraventricular Tachycardia Initiated by Couplets of Atrial Extrasystoles but Not by Single Premature Atrial Beats: What Is the Mechanism?
Authors: Carbone Vincenzo , Marafioti Vincenzo , Oreto Lilia , Oreto Giuseppe
Published: May 2016

The reported electrocardiogram shows several atrial extrasystoles (AEs) sometimes occurring in couplets. The former beat of each couplet is nonconducted, whereas the latter triggers a supraventricular tachycardia with negative P waves in inferior leads and RP > PR. This suggests an atypical atrioventricular nodal reentrant tachycardia involving the fast pathway anterogradely and the slow pathway retrogradely. The tachycardia is never precipitated by single AEs. The blocked AE of each pair is pivotal in tachycardia initiation, allowing the subsequent impulse to conduct down the fast pathway. A concealed slow pathway penetration during the blocked AE is invoked as the key mechanism.
Investigation of High‐Speed Erythrocyte Flow and Erythrocyte‐Wall Impact in a Lab‐on‐a‐Chip
Authors: Li Ping , Zheng Lu , Zhang Di , Xie Yonghui , Feng Yi , Xie Gongnan
Published: May 2016

To better understand erythrocyte high‐speed motion, collision characteristics, and collision‐induced hemolysis probability in rotary blood pumps, a visual experimental investigation of high‐speed erythrocyte flow and erythrocyte‐wall collision in a lab‐on‐a‐chip was performed. The erythrocyte suspension was driven by a microsyringe pump connected to the microchip, and the erythrocyte flow and erythrocyte‐wall impact process were observed and imaged by an optical microscope and a high‐speed camera. Two types of microchips with different impact surfaces (flat and curved) were employed. The motion and deformation features before and after collision were studied in detail. The results show that erythrocytes not only move along the flow direction in the flow plane but also rotate and roll in three‐dimensional space. Erythrocytes keep discoid shape during the movement in the straight channel, but their deformations during collision are mainly classified into two types: erythrocyte structure is still stable and the erythrocyte performance can be ensured to a certain extent in the TypeA deformation, while the TypeB deformation makes the membrane more likely to fracture on the stretched side, increasing the probability of hemolysis. Furthermore, the movements and deformations of the erythrocytes after collision are analyzed and classified into two types: bouncing and slipping. Moreover, a simulation method for the flow in microchip was performed and validated through a comparison of the streamlines and experimental erythrocytes tracks, which can be further employed to predict the high‐speed blood flow, associated with collision process in mechanical blood pump.
Interaction of a Transapical Miniaturized Ventricular Assist Device With the Left Ventricle: Hemodynamic Evaluation and Visualization in an Isolated Heart Setup
Authors: Granegger Marcus , Aigner Philipp , Haberl Thomas , Mahr Stephane , Tamez Daniel A. , Graham Joel , Nunez Nathalie J. , Schima Heinrich , Moscato Francesco
Published: May 2016

New left ventricular assist devices (LVADs) offer both important advantages and potential hazards. VAD development requires better and expeditious ways to identify these advantages and hazards. We validated in an isolated working heart the hemodynamic performance of an intraventricular LVAD and investigated how its outflow cannula interacted with the aortic valve. Hearts from six pigs were explanted and connected to an isolated working heart setup. A miniaturized LVAD was implanted within the left ventricle (tMVAD, HeartWare Inc., Miami Lakes, FL, USA). In four experiments blood was used to investigate hemodynamics under various loading conditions. In two experiments crystalloid perfusate was used, allowing visualization of the outflow cannula within the aortic valve. In all hearts the transapical miniaturized ventricular assist device (tMVAD) implantation was successful. In the blood experiments hemodynamics similar to those observed clinically were achieved. Pump speeds ranged from 9 to 22 krpm with a maximum of 7.6 L/min against a pressure difference between ventricle and aorta of ∼50 mm Hg. With crystalloid perfusate, central positioning of the outflow cannula in the aortic root was observed during full and partial support. With decreasing aortic pressures the cannula tended to drift toward the aortic root wall. The tMVAD could unload the ventricle similarly to LVADs under conventional cannulation. Aortic pressure influenced central positioning of the outflow cannula in the aortic root. The isolated heart is a simple, accessible evaluation platform unaffected by complex reactions within a whole, living animal. This platform allowed detection and visualization of potential hazards.
Changes in choroidal thickness after vitrectomy for epiretinal membrane combined with vitreomacular traction
Authors: Kang Eui Chun , Lee Kyou Ho , Koh Hyoung Jun
Published: May 2016

Purpose

To compare choroidal thickness after vitrectomy between epiretinal membrane (ERM) with and without vitreomacular traction (VMT).

Methods

In this retrospective study, 228 consecutive participants with ERM who underwent vitrectomy were categorized into two groups according to the presence of VMT on spectral domain–optical coherence tomography: VMT group (ERM with VMT, n = 21) and non‐VMT group (ERM without VMT, n = 207). The primary outcome was the mean subfoveal choroidal thickness (SFCT) at baseline, and at 3 and 6 months postsurgery.

Results

At baseline, the prevalence of VMT in eyes with ERM was 9.6% (21/228), and mean SFCT was greater in the VMT than in the non‐VMT group (270.3 ± 93.4 vs. 223.7 ± 82.1 μm; p = 0.015). After surgery, mean SFCT decreased in the VMT group (241.7 ± 92.3 μm at 3 months and 228.8 ± 86.4 μm at 6 months; p < 0.001), but remained unchanged in the non‐VMT group (223.6 ± 78.9 μm at 3 months and 223.3 ± 82.6 μm at 6 months; p = 0.696). There were no differences in mean SFCT between the groups at 3 and 6 months after surgery (p = 0.339 and p = 0.772, respectively).

Conclusion

Choroidal thickness was greater in ERM eyes with than without VMT possibly due to direct anteroposterior traction on the retina and choroid, increased vascular endothelial growth factor associated with stress on retinal pigment epithelial cells and inflammation. After vitrectomy, mean SFCT reduced in the eyes with VMT, but not in those without VMT.
“You Can't Always Get What You Want”: A Novel Research Paradigm to Explore the Relationship between Multiple Intentions and Behaviours
Authors: Sniehotta Falko F. , Presseau Justin , Allan Julia , Araújo‐Soares Vera
Published: May 2016

Objective

Research investigating cognitive moderators of the intention–behaviour relationship and psychological consequences of failure to enact intentions is usually conducted in a single‐behaviour paradigm. A multiple‐behaviour paradigm is introduced which overcomes bias inherent to single‐behaviour designs and allows testing of novel hypotheses. Two exploratory studies illustrate the utility of this new paradigm by investigating the role of cognitive predictors and psychological correlates of intention–behaviour relationships.

Method

The proposed method involves measuring multiple intentions across common areas of life activity at baseline and corresponding behaviours at follow‐up. In two studies, 51 intentions and behaviours were assessed (49 by self‐report, 2 objectively). In Study 1, participants (n = 126) also completed self‐reported measures of everyday cognitive failures and dysexecutive behaviours, crystallised intelligence (Mill Hill Vocabulary Scale) at baseline and Quality of Life (QoL; follow‐up). In Study 2, objective executive function measures (Stroop, Go/NoGo task and Word Fluency test) were completed by N = 30 participants.

Results

The total number of intentions, cognitive, and QoL measures were unrelated to the percentage of intentions enacted. Crystallised intelligence was related to successful intention implementation and problems with emotion regulation were associated with forming fewer intentions and with fewer failed intentions. QoL was strongly related with more intentions, regardless of whether or not these were implemented. Study 2 showed that cognitive flexibility (word fluency) and task errors, rather than Stroop effect and Go/No‐Go performance were related, to intention–behaviour congruence.

Conclusion

Intention–behaviour relationships might be better understood when considering the multiple intentions and behaviours that people are engaged in at once at any one point in time. A multiple‐behaviour paradigm suggests novel hypotheses. Preliminary findings reported here require replication. Anticipated applications of the paradigm are outlined and discussed.
Effects of stocking density, light and perches on broiler growth
Authors: Velo Ramón , Ceular Angel
Published: May 2016

The aim of this study was to determine the effect of stocking density, light intensity and light color on broiler growth. The experiment consisted of four 35‐day phases during each of which 320 chickens were surveyed. The research was performed at stocking densities of four and six birds/m2. Illuminances of 15 and 30 lx were obtained through commercial lamps with 4000 K and 6000 K color temperatures. Lighting was used 17 h a day, between 06.00 and 23.00 hours (17 L:7 D). The results showed a decrease in body, carcass, breast and thighs weight (P < 0.05) with the increase in stocking density. Body weight decreased by 10.5% and carcass weight decreased by 9.4% at six birds/m2 stocking density. Contrastingly, no differences were found for the tested light colors. Increasing illuminance from 15 to 30 lx caused a 1.9% decrease in body weight. The analysis of the effect of perches revealed that using perches significantly increased body (2.5%) and breast weight (11.8%). The interactions between light intensity or color and stocking density and between light intensity and light color were analyzed.
Improving the fermentation quality of wheat straw silage stored at low temperature by psychrotrophic lactic acid bacteria
Authors: Zhang Miao , Lv Haoxin , Tan Zhongfang , Li Ya , Wang Yanping , Pang Huili , Li Zongwei , Jiao Zhen , Jin Qingsheng
Published: May 2016

This study aimed to explore the feasible approaches to develop a silage production technique in regions with low temperatures. An effective low‐temperature silage technology system was constructed and two frigostable Lactobacillus (L.) strains isolated from alpine pastures were selected and proved to be available for wheat straw silage at 5°C. The strains QZ227 and QZ887 were both identified as L. plantarum according to the phenotype, 16S rRNA, and RecA gene analysis. QZ227, QZ887 and a commercial inoculant FG1 consisting of L. plantarum were effective for improving the fermentation quality of wheat straws silage at 5°C for 30 days as indicated by the higher content of lactic acid and for 60 days by lower pH values, while the control with sterile water instead conferred reduced benefits. Additionally, silages fermented at low temperature proved to be acceptable for feeding livestock after being placed in a simulated environmental temperature of 20°C for 14 days to detect its edibility during the early spring when the temperature begins to rise. Both QZ227 and QZ887 showed potential applications of silage making in frigid areas and were effective inoculants in a low‐temperature silage technology system.
Different Effects of Acculturative Stress and Family Life Stress on Depressive Symptoms among Married Vietnamese Immigrant Women in South Korea
Authors: Thao Nguyen T. P.
Published: May 2016

Married Vietnamese immigrant women often face multiple stressors related to sociocultural adaptation and new family lives in South Korea. The purpose of this paper is to identify the different influences of acculturative and family life stress on depressive symptoms among Vietnamese immigrant wives. Data were collected through a questionnaire survey of 301 married Vietnamese immigrant women residing in South Korea. The study utilized linear regression analysis to test the relationships between the variables. The findings show that both acculturative and family life stress are positively related to depressive symptoms. Family life stress influences depressive symptoms to a greater extent than acculturative stress. The study emphasizes the significance of family‐related stress on mental health among married Vietnamese immigrant women in Korea and provides some implications for research, clinical practice, and policy.
Fast and Robust Inversion‐Free Shape Manipulation
Authors: Liu Tiantian , Gao Ming , Zhu Lifeng , Sifakis Eftychios , Kavan Ladislav
Published: May 2016

We present a shape manipulation technique capable of producing deformations of 2D and 3D meshes, guaranteeing that no elements will be inverted. We achieve this by augmenting the quadratic ex‐rotated elastic energy with additional convex terms that penalize the presence of inverted elements. Using a schedule of increasing penalty coefficients, we efficiently and robustly converge to an inversion free state by solving a sequence of unconstrained convex minimization problems. This process can be interpreted as a special purpose Semi‐Definite Programming (SDP) solver. We demonstrate that our method outperforms solvers used in previous work, including commercial‐grade SDP software (MOSEK). As an additional benefit, our method also converges to the solution via a more intuitive path, which can be used for quick preview. We demonstrate the efficacy of our scheme in a number of 2D and 3D shapes undergoing moderate to drastic deformation.
Improved Surface Quality in 3D Printing by Optimizing the Printing Direction
Authors: Wang W. M. , Zanni C. , Kobbelt L.
Published: May 2016

We present a pipeline of algorithms that decomposes a given polygon model into parts such that each part can be 3D printed with high (outer) surface quality. For this we exploit the fact that most 3D printing technologies have an anisotropic resolution and hence the surface smoothness varies significantly with the orientation of the surface. Our pipeline starts by segmenting the input surface into patches such that their normals can be aligned perpendicularly to the printing direction. A 3D Voronoi diagram is computed such that the intersections of the Voronoi cells with the surface approximate these surface patches. The intersections of the Voronoi cells with the input model's volume then provide an initial decomposition. We further present an algorithm to compute an assembly order for the parts and generate connectors between them. A post processing step further optimizes the seams between segments to improve the visual quality. We run our pipeline on a wide range of 3D models and experimentally evaluate the obtained improvements in terms of numerical, visual, and haptic quality.
Generalized Diffusion Curves: An Improved Vector Representation for Smooth‐Shaded Images
Authors: Jeschke Stefan
Published: May 2016

This paper generalizes the well‐known Diffusion Curves Images (DCI), which are composed of a set of Bezier curves with colors specified on either side. These colors are diffused as Laplace functions over the image domain, which results in smooth color gradients interrupted by the Bezier curves. Our new formulation allows for more color control away from the boundary, providing a similar expressive power as recent Bilaplace image models without introducing associated issues and computational costs. The new model is based on a special Laplace function blending and a new edge blur formulation. We demonstrate that given some user‐defined boundary curves over an input raster image, fitting colors and edge blur from the image to the new model and subsequent editing and animation is equally convenient as with DCIs. Numerous examples and comparisons to DCIs are presented.
Smooth Image Sequences for Data‐driven Morphing
Authors: Averbuch‐Elor Hadar , Cohen‐Or Daniel , Kopf Johannes
Published: May 2016

Smoothness is a quality that feels aesthetic and pleasing to the human eye. We present an algorithm for finding “as‐smooth‐as‐possible” sequences in image collections. In contrast to previous work, our method does not assume that the images show a common 3D scene, but instead may depict different object instances with varying deformations, and significant variation in lighting, texture, and color appearance. Our algorithm does not rely on a notion of camera pose, view direction, or 3D representation of an underlying scene, but instead directly optimizes the smoothness of the apparent motion of local point matches among the collection images. We increase the smoothness of our sequences by performing a global similarity transform alignment, as well as localized geometric wobble reduction and appearance stabilization. Our technique gives rise to a new kind of image morphing algorithm, in which the in‐between motion is derived in a data‐driven manner from a smooth sequence of real images without any user intervention. This new type of morph can go far beyond the ability of traditional techniques. We also demonstrate that our smooth sequences allow exploring large image collections in a stable manner.
Narrow Band FLIP for Liquid Simulations
Authors: Ferstl Florian , Ando Ryoichi , Wojtan Chris , Westermann Rüdiger , Thuerey Nils
Published: May 2016

The Fluid Implicit Particle method (FLIP) for liquid simulations uses particles to reduce numerical dissipation and provide important visual cues for events like complex splashes and small‐scale features near the liquid surface. Unfortunately, FLIP simulations can be computationally expensive, because they require a dense sampling of particles to fill the entire liquid volume. Furthermore, the vast majority of these FLIP particles contribute nothing to the fluid's visual appearance, especially for larger volumes of liquid. We present a method that only uses FLIP particles within a narrow band of the liquid surface, while efficiently representing the remaining inner volume on a regular grid. We show that a naïve realization of this idea introduces unstable and uncontrollable energy fluctuations, and we propose a novel coupling scheme between FLIP particles and regular grid which overcomes this problem. Our method drastically reduces the particle count and simulation times while yielding results that are nearly indistinguishable from regular FLIP simulations. Our approach is easy to integrate into any existing FLIP implementation.
A Multi‐sided Bézier Patch with a Simple Control Structure
Authors: Várady Tamás , Salvi Péter , Karikó György
Published: May 2016

A new n‐sided surface scheme is presented, that generalizes tensor product Bézier patches. Boundaries and corresponding cross‐derivatives are specified as conventional Bézier surfaces of arbitrary degrees. The surface is defined over a convex polygonal domain; local coordinates are computed from generalized barycentric coordinates; control points are multiplied by weighted, biparametric Bernstein functions. A method for interpolating a middle point is also presented.

This Generalized Bézier (GB) patch is based on a new displacement scheme that builds up multi‐sided patches as a combination of a base patch, n displacement patches and an interior patch; this is considered to be an alternative to the Boolean sum concept. The input ribbons may have different degrees, but the final patch representation has a uniform degree. Interior control points—other than those specified by the user—are placed automatically by a special degree elevation algorithm. GB patches connect to adjacent Bézier surfaces with G1continuity. The control structure is simple and intuitive; the number of control points is proportional to those of quadrilateral control grids. The scheme is introduced through simple examples; suggestions for future work are also discussed.
Compressed Multiresolution Hierarchies for High‐Quality Precomputed Shadows
Authors: Scandolo Leonardo , Bauszat Pablo , Eisemann Elmar
Published: May 2016

The quality of shadow mapping is traditionally limited by texture resolution. We present a novel lossless compression scheme for high‐resolution shadow maps based on precomputed multiresolution hierarchies. Traditional multiresolution trees can compactly represent homogeneous regions of shadow maps at coarser levels, but require many nodes for fine details. By conservatively adapting the depth map, we can significantly reduce the tree complexity. Our proposed method offers high compression rates, avoids quantization errors, exploits coherency along all data dimensions, and is well‐suited for GPU architectures. Our approach can be applied for coherent shadow maps as well, enabling several applications, including high‐quality soft shadows and dynamic lights moving on fixed‐trajectories.
Modeling and Estimation of Energy‐Based Hyperelastic Objects
Authors: Miguel Eder , Miraut David , Otaduy Miguel A.
Published: May 2016

In this paper, we present a method to model hyperelasticity that is well suited for representing the nonlinearity of real‐world objects, as well as for estimating it from deformation examples. Previous approaches suffer several limitations, such as lack of integrability of elastic forces, failure to enforce energy convexity, lack of robustness of parameter estimation, or difficulty to model cross‐modal effects. Our method avoids these problems by relying on a general energy‐based definition of elastic properties. The accuracy of the resulting elastic model is maximized by defining an additive model of separable energy terms, which allow progressive parameter estimation. In addition, our method supports efficient modeling of extreme nonlinearities thanks to energy‐limiting constraints. We combine our energy‐based model with an optimization method to estimate model parameters from force‐deformation examples, and we show successful modeling of diverse deformable objects, including cloth, human finger skin, and internal human anatomy in a medical imaging application.
Inertial Steady 2D Vector Field Topology
Authors: Günther Tobias , Theisel Holger
Published: May 2016

Vector field topology is a powerful and matured tool for the study of the asymptotic behavior of tracer particles in steady flows. Yet, it does not capture the behavior of finite‐sized particles, because they develop inertia and do not move tangential to the flow. In this paper, we use the fact that the trajectories of inertial particles can be described as tangent curves of a higher dimensional vector field. Using this, we conduct a full classification of the first‐order critical points of this higher dimensional flow, and devise a method to their efficient extraction. Further, we interactively visualize the asymptotic behavior of finite‐sized particles by a glyph visualization that encodes the outcome of any initial condition of the governing ODE, i.e., for a varying initial position and/or initial velocity. With this, we present a first approach to extend traditional vector field topology to the inertial case.
The use of Masson's trichrome staining, second harmonic imaging and two‐photon excited fluorescence of collagen in distinguishing intestinal tuberculosis from Crohn's disease
Authors: Mao H. , Su P. , Qiu W. , Huang L. , Yu H. , Wang Y.
Published: May 2016

Aim

Differentiation between Crohn's disease (CD) and intestinal tuberculosis (ITB) continues to be difficult. The present study investigated the collagen fibre characteristics of CD and ITB using Masson's trichrome staining, second harmonic generation (SHG) imaging and two‐photon excited fluorescence (TPEF) imaging with the aim of distinguishing between them.

Method

The characteristics of collagen fibres in intestinal specimens from patients with CD, ITB and healthy controls were compared using Masson's trichrome staining and SHG and TPEF imaging.

Results

Masson's trichrome staining showed that the content of collagen fibre (540.92 [139.61−1681.93] vs 236.17 [72.94−1108.32], P < 0.05) and fibre deposits (888.92 [315.89−3172.9] vs 498.98 [38.82−5802.31], P < 0.05) were both higher in ITB than in CD. The content of collagen fibre (594.677 [139.61−1681.93] vs 107.425 [4.66−988.7], P < 0.05) and fibre deposits (1118.4661 [315.89−5802.31] vs 340.575 [29.62−1188.87], P < 0.05) were significantly higher in lesions with granulomata than in those without. The SHG/TPEF images demonstrated that the percentage of fibrosis in ITB was also significantly higher than in CD (P < 0.05), in both surgical (13.363% ± 5.303% vs 8.322% ± 5.078%, P = 0.044) and endoscopic specimens (mean rank 13.5 vs 7.5, P = 0.023). The SHG/TPEF imaging described different distribution patterns of collagen between CD and ITB; in the former this was irregular in clumps while in ITB the collagen was arranged around caseating granulomata.

Conclusion

The evaluation of fibrosis in CD and ITB by Masson's trichrome staining and SHG and TPEF imaging appears to distinguish between these two diseases.
Differential item functioning in patient reported outcomes research
Authors: Carle Adam C , Mara Constance A
Published: May 2016

This commentary is on the original article by Coster et al. on pages 1132–1138 of this issue.