bluuebunny/crossref_metadata_2025_split huggingface dataset:
Sorghum Root Epigenetic Landscape During Limiting Phosphorus Conditions
Authors: Gladman Nicholas , Hufnagel Barbara , Regulski Michael , Liu Zhigang , Wang Xiaofei , Chougule Kapeel , Kochian Leon , Magalhaes Jurandir , Ware Doreen 
Published: May 2021

AbstractEfficient acquisition and use of available phosphorus from the soil is crucial for plant growth, development, and yield. With an ever-increasing acreage of croplands with suboptimal available soil phosphorus, genetic improvement of sorghum germplasm for enhanced phosphorus acquisition from soil is crucial to increasing agricultural output and reducing inputs, while confronted with a growing world population and uncertain climate. Sorghum bicolor is a globally important commodity for food, fodder, and forage. Known for robust tolerance to heat, drought, and other abiotic stresses, its capacity for optimal phosphorus use efficiency (PUE) is still being investigated for optimized root system architectures (RSA). Whilst a few RSA-influencing genes have been identified in sorghum and other grasses, the epigenetic impact on expression and tissue-specific activation of candidate PUE genes remains elusive. Here, we present transcriptomic, epigenetic, and regulatory network profiling of RSA modulation in the BTx623 sorghum background in response to limiting phosphorus (LP) conditions. We show that during LP, sorghum RSA is remodeled to increase root length and surface area, likely enhancing its ability to acquire P. Global DNA 5-methylcytosine and H3K4 and H3K27 trimethylation levels decrease in response to LP, while H3K4me3 peaks and DNA hypomethylated regions contain recognition motifs of numerous developmental and nutrient responsive transcription factors that display disparate expression patterns between different root tissues (primary root apex, elongation zone, and lateral root apex). Suggesting that epigenetic shifts during growth on LP results in targeted gene expression in a tissue-specific manner that optimizes the RSA for improved P uptake.SummaryIn response to low P, epigenetic and transcriptional changes stimulate lateral root growth in Sorghum bicolor BTx623, increasing the root surface area for enhanced “mining” of P from the soil.
Maternally inherited piRNAs direct transient heterochromatin formation at active transposons during early Drosophila embryogenesis
Authors: Fabry Martin H. , Falconio Federica A. , Joud Fadwa , Lythgoe Emily K. , Czech Benjamin , Hannon Gregory J. 
Published: May 2021

AbstractThe PIWI-interacting RNA (piRNA) pathway controls transposon expression in animal germ cells, thereby ensuring genome stability over generations. In Drosophila, piRNAs are intergenerationally inherited through the maternal lineage, and this has demonstrated importance in the specification of piRNA source loci and in silencing of I- and P-elements in the germ cells of daughters. Maternally inherited Piwi protein enters somatic nuclei in early embryos prior to zygotic genome activation and persists therein for roughly half of the time required to complete embryonic development. To investigate the role of the piRNA pathway in the embryonic soma, we created a conditionally unstable Piwi protein. This enabled maternally deposited Piwi to be cleared from newly laid embryos within 30 minutes and well ahead of the activation of zygotic transcription. Examination of RNA and protein profiles over time, and correlation with patterns of H3K9me3 deposition, suggests a role for maternally deposited Piwi in attenuating zygotic transposon expression in somatic cells of the developing embryo. In particular, robust deposition of piRNAs targeting roo, an element whose expression is mainly restricted to embryonic development, results in the deposition of transient heterochromatic marks at active roo insertions. We hypothesize that roo, an extremely successful mobile element, may have adopted a lifestyle of expression in the embryonic soma to evade silencing in germ cells.
Infrared furnace for in situ neutron single-crystal diffraction studies in controlled gas atmospheres at high temperatures
Authors: Magro Fernando , Ceretti Monica , Meven Martin , Paulus Werner 
Published: May 2021

To understand oxygen diffusion mechanisms in non-stoichiometric oxides, the possibility to explore structural changes as a function of the oxygen partial pressure with temperature and related oxygen bulk stoichiometry is mandatory. This article reports on the realization of a high-temperature furnace, suitable for single-crystal neutron diffraction, working continuously at temperatures of up to 1000°C at different and adjustable partial gas pressures of up to 2 bar (1 bar = 100 kPa). This allows exploration of the phase diagrams of non-stoichiometric oxides under in situ conditions and controlled oxygen partial pressure. As a pilot study, the structural changes of Pr2NiO4+δ were explored at room temperature (δ ≃ 0.24) and at 900°C under 1 bar P(O2) (δ ≃ 0.13) as well as under secondary vacuum (approximately 10−5 mbar) conditions yielding a δ close to zero. The strong anharmonic displacements of the apical oxygen atoms along the [110] shallow diffusion pathway, which were previously observed at room temperature and 400°C, become more isotropic at 900°C. The study shows that the anisotropic oxygen displacements, here related to lattice instabilities, play a major role in understanding oxygen diffusion pathways and related activation energies at moderate temperatures. This also shows the importance of the availability of reaction cells for single-crystal neutron diffraction to explore the phase diagram and associated structural changes of non-stoichiometric oxygen ion conductors and respective diffusion mechanisms.
Bascarsija (Bashcarshiya), Sarajevo's historic core: evaluating the qualities of its open spaces
Authors: Kudumovic Lana 
Published: May 2021

PurposeThe urban development within the Ottoman Empire saw two major zones distinguished in the city – the residential area (mahala) and the public core (carsija). The same model was applied to Bosnia and Herzegovina during the Ottoman period (15–19th centuries). This paper focuses on the historic core of Sarajevo, known as Bascarsija, developed during the Ottoman period in Bosnia. This article aims to define the qualities of open spaces in Bascarsija, particularly its physical attributes, sensory experience and activities.Design/methodology/approachFirstly, it is important to understand the development of historic urban tissue. A transect walk across Bascarsija was used to identify several categories of public space. Following this, draws on theories of the qualities of space, open spaces in Bascarsija were systematically analyzed.FindingsTypes of open space were distinguished according to their purposes and relationships with their surroundings. For each type, it was possible to define physical attributes, as a reflection of the applied form, scale, relationship to nature, hierarchy (dominance) and local texture; activities, which depend on the current function and attractiveness; and sensory experience derived from the subjective experience of users which rely on current functions and physical forms.Originality/valueThe qualities of open space in Bascarsija are distinguished, highlighting the importance of such places. This paper contributes to a comprehensive understanding of the image of the place and values of the historic core of Bascarsija, laying the groundwork for further research and urban interventions.
Network embeddedness and innovation performance: a mediation moderation analysis using PLS-SEM
Authors: Tian Hongyun , Iqbal Shuja , Anwar Farooq , Akhtar Shamim , Khan Muhammad Aamir Shafique , Wang Weijie 
Published: May 2021

PurposeThis study examines the impact of network embeddedness (NE) on innovation performance in small- and medium-sized enterprises (SMEs), and analyses absorptive capacity as mediator and openness as moderator.Design/methodology/approachData were collected from 209 employees of SMEs using a convenient sampling technique. Partial least squares structural equation modeling in SmartPLS was used to analyze the various constructs.FindingsThe results exhibit a positive and significant relationship in NE and absorptive capacity. Also, this study found a positive and significant relationship in absorptive capacity and innovation performance. Moreover, absorptive capacity has a positive and significant mediation role in the relationship between NE and innovation performance. Also, openness positively moderated the relationship of NE and absorptive capacity.Practical implicationsSMEs should try to implement the functions of NE, such as interaction with other firms in higher frequency, developing trust among all parties, clear alliance among the partners to enhance innovation performance. Similarly, SMEs should focus on absorptive capacity and openness to enrich innovation performance.Originality/valueThis study adds in the current literature of the chosen constructs and empirically contributes the effects in the manufacturing industry of Jiangsu Province, China.
The purposes of performance management systems and processes: a cross-functional typology
Authors: Hansen Allan 
Published: May 2021

PurposeThis paper aims to organise, in a general typology, the different purposes of performance management systems and processes (PMSPs) that are discussed across the performance management literature in different functional areas.Design/methodology/approachThe typology is developed based on a traditional review of the performance management literature from three types of functional areas, represented by operations and production management, management accounting and human resource management.FindingsThe cross-functional typology illustrates how the different types of purposes discussed in the literature can be organised in a hierarchical structure. In this way, the basic purpose of organisational value creation for PMSPs can be decomposed into two layers of sub-purposes, the first specifying the domain and the second outlining the specific managerial use of PMSPs.Practical implicationsThe presented typology may help managers across different functional areas map the purposes of their PMSPs; this mapping will not only provide the basics for understanding a PMSP's potential value for an organisation but also serve as an important input for PMSP design.Originality/valueThe presented typology has a broader scope than existing typologies of purposes in research and, consequently, better interrelates and tracks the various types of purposes discussed across different functional areas. This contributes not only to our understanding of performance management as a cross-functional field but also to research on the use and design of PMSPs in organisations.
Analysing flow experience on repurchase intention in e-retailing during COVID-19
Authors: Kazancoglu Ipek , Demir Burak 
Published: May 2021

PurposeThe aim of this paper is to analyse the effects of flow experience on repurchase intention. In this context, this paper examines the mediating role of e-customer satisfaction during COVID-19 pandemic. This study is based on flow theory using two consequent factors, which have not been investigated together previously.Design/methodology/approachA questionnaire consisted of flow experience dimensions and e-customer satisfaction, repurchase intention. An online survey was conducted with 478 consumers who experienced flow in online shopping. Exploratory factor analysis and structural equation modelling were used to test research hypotheses. The research study data were collected between 20 March and 31 May 2020, during the spread of COVID-19.FindingsTelepresence, concentration and control dimensions of flow experience have a significant effect on e-customer satisfaction. In addition, it was determined that the change in repurchase intention was caused by concentration and telepresence dimensions of flow experience. Therefore, it was found that e-customer satisfaction has a significant effect on repurchase intention. As a result, it was determined that e-customer satisfaction has a partial mediating role in the effect of flow experience dimensions of telepresence, concentration and control, and a full mediating role in the effect of flow experience dimension of time distortion on repurchase intention.Research limitations/implicationsThe limitations of the study are that research was conducted on only one retail company and a limited number of participants were reached. In addition, some flow experience dimensions were excluded in the study, constituting another limitation.Originality/valueThis paper contributes flow theory literature by modelling flow dimensions as an independent variable that affects e-customer satisfaction and repurchase intention. In addition, different dimensions of flow experience in online retailing have been discussed, and no study has been found that discusses flow experience dimensions (goal clarity, enjoyment, curiosity, control, telepresence, time distortion, concentration) together. This study conducted during COVID-19 pandemic would produce a different perspective on flow experience in e-retailing
The importance of management control systems for startup funding – empirical evidence from external financiers
Authors: Schachel Hanna , Lachmann Maik , Endenich Christoph , Breucker Oliver 
Published: May 2021

Purpose
This study aims to examine which categories of management control systems (MCSs) in startups are most important to external financiers. Furthermore, this paper investigates how equity and debt financiers differ in their perceptions of MCS categories and examines the relevance of MCSs for their investment decisions.

Design/methodology/approach
This study collects data through a cross-sectional survey sent to equity and debt financiers actively investing in startups. The results are based on survey responses from 73 financiers.

Findings
The results show that financial MCSs are considered most important, followed by strategic MCSs, while human resources MCSs are perceived as only moderately important. This paper finds significant differences in the perceived importance of MCS categories between equity and debt providers, which can be explained by differing risk profiles and monitoring needs. Although debt financiers consider financial and strategic MCSs to be less important for their portfolios’ startups than equity financiers do, debt financiers perceive MCSs as more important for their initial investment decisions.

Originality/value
The study sheds new light on the importance of different MCS categories in startups by analyzing external financiers’ perceptions. Overall, the empirical study provides insights that are particularly valuable for startups seeking external financing for company growth.
Education in the times of a pandemic: parental socioeconomic characteristics and time spent educating children
Authors: Milovanska-Farrington Stefani 
Published: May 2021

PurposeThis research explores the impact of parental educational attainment, race, ethnicity, gender and employment on the time parents spend educating their children during the COVID-19 pandemic.Design/methodology/approachSchool closures to prevent the spread of COVID-19 have affected billions of students worldwide, and have had an impact on the economy and the society. With classes being cancelled or taught remotely, the importance of parental intervention in children's education has accelerated.FindingsThe authors find that more educated parents allocate more time on child education, while higher income and employment have an adverse effect. Fathers are likely to spend more time than mothers in teaching and educating their children during COVID-19.Practical implicationsThe findings have implications in identifying children whose education suffers the most in times of a pandemic and determining the main target group of policies designed to train children, encourage parental involvement and support children's educational development.Originality/valueThis is the first paper that examines the variations in parental time with children across social and economic subgroups during the COVID-19 pandemic. The authors also focus on the time parents spend educating their children rather than just supervising them. The authors additionally examine the determinants of the time children study on their own. Finally, the analysis is novel because it is based on the newest available data collected to examine the trends and experiences of individuals in the United States triggered by COVID-19.
The prevalence and risk factors of musculoskeletal disorders among subcontracted hospital cleaners in Thailand
Authors: Laithaisong Thanaphum , Aekplakorn Wichai , Suriyawongpaisal Paibul , Tupthai Chanunporn , Wongrathanandha Chathaya 
Published: May 2021

PurposeThis research aimed to explore the prevalence of musculoskeletal disorders (MSDs) and related factors among subcontracted cleaners in a teaching hospital in Thailand.Design/methodology/approachA cross-sectional study was conducted of 393 subcontracted cleaners in a teaching hospital, from May to June 2020. Face-to-face interviews were carried out using a standard questionnaire, consisting of four parts: (1) participant characteristics, (2) stress test, (3) work characteristics and (4) standardized Nordic questionnaire, Thai version, for MSDs outcome. Multiple logistic regression analyses were performed to determine the association between MSDs and related factors.FindingsThe prevalence of MSDs was 81.9%, involving mostly the lower back (57.7%), followed by the shoulder (52.6%). Factors significantly associated with MSDs were as follows: male gender (OR = 3.06, 95% CI [1.19, 7.87]), severe stress (OR = 2.72, 95% CI [1.13, 6.54]), history of injuries (OR = 4.37, 95% CI [1.27, 15.11]), mopping posture (OR = 2.81, 95% CI [1.43, 5.50]) and task duration (OR = 1.90, 95% CI [1.01, 3.57] for 2–4 h and OR = 3.39, 95% CI [1.17, 9.86] for more than 4 h). Sick leave due to MSDs was associated with history of injuries, Thai nationality and having another part-time job.Originality/valueThe study findings about MSDs in terms of prevalence and related factors contributed to limited pool of the knowledge among subcontracted hospital cleaners in Thailand and middle-income country settings. With growing popularity in outsourcing cleaning services among hospitals in these countries, the study findings could raise a concern and inform policymakers and hospital administrators the importance of the magnitude and risk factors for MSDs necessitating design of preventive strategies.
Exploring the trade-off between liquidity, risk and return under sectoral diversification across distinct economic settings
Authors: Henriques Carla , Neves Elisabete 
Published: May 2021

PurposeThis paper aims to explore the trade-off between liquidity, risk and return under sectoral diversification across distinct economic settings and investment strategies.Design/methodology/approachA novel multi-objective portfolio model is proposed to assess investment decisions under sectoral diversification, where the objective functions and constraints are interval-valued. The objective functions used are risk minimization (through the semi-absolute deviation measure of risk), maximization of liquidity (using turnover as a proxy) and the maximization of logarithmic return. Besides coherence constraints (imposing that the sum of the percentages of investment assigned to each stock should be equal to 100%), constraints regarding the maximum proportion of capital that can be invested (ensuring a minimum level of diversification) and cardinality constraints (to account for transaction costs) are also imposed.FindingsBesides the trade-off between return and risk, the study findings highlight a trade-off between liquidity and return and a positive relationship between risk and liquidity. Under an economic crisis scenario, the trade-off between return and liquidity is reduced. With the economic recovery, the levels of risk increase when contrasted with the setting of the economic crisis. The highest liquidity levels are reached with the economic boom, whereas the highest returns are obtained with the economic recession.Originality/valueThis paper suggests a new modeling approach for assessing the trade-offs between liquidity, risk and return under different scenarios and investment strategies. A new interactive procedure inspired on the reference point approach is also proposed to obtain possibly efficient portfolios according to the investor's preferences. Regarding previous approaches suggested in the literature, this new procedure allows obtaining both supported and unsupported efficient solutions when cardinality constraints are included.
Optimization of delay time and environmental pollution in scheduling of production and transportation system: a novel multi-society genetic algorithm approach
Authors: Moghimi Mostafa , Beheshtinia Mohammad Ali 
Published: May 2021

Purpose
The purpose of this study is to investigate the optimization of the scheduling of production and transportation systems while considering delay time (DT) and environmental pollution (EP) concurrently. To this, an integrated multi-site manufacturing process using a cumulative transportation system is investigated. Additionally, a novel multi-society genetic algorithm is developed to reach the best answers.

Design/methodology/approach
A bi-objective model is proposed to optimize the production and transportation process with the objectives of minimizing DT and EP. This is solved by a social dynamic genetic algorithm (SDGA), which is a novel multi-society genetic algorithm, in scenarios of equal and unequal impacts of each objective. The impacts of each objective are calculated by the analytical hierarchical process (AHP) using experts’ opinions. Results are compared by dynamic genetic algorithm and optimum solution results.

Findings
Results clearly depict the efficiency of the proposed algorithm and model in the scheduling of production and transportation systems with the objectives of minimizing DT and EP concurrently. Although SDGA’s performance is acceptable in all cases, in comparison to other genetic algorithms, it needs more process time which is the cost of reaching better answers. Additionally, SDGA had better performance in variable weights of objectives in comparison to itself and other genetic algorithms.

Research limitations/implications
This research is an improvement which allows both society and industry to elevate the levels of their satisfaction while their social responsibilities have been glorified through assuaging the concerns of customers on distribution networks’ emission, competing more efficient and effective in the global market and having the ability to make deliberate decisions far from bias. Additionally, implications of the developed genetic algorithm help directly to the organizations engaged with intelligent production and/or transportation planning which society will be merited indirectly from their outcomes. It also could be utilitarian for organizations that are engaged with small, medium and big data analysis in their processes and want to use more effective and more efficient tools.

Originality/value
Optimization of EP and DT are considered simultaneously in both model and algorithm in this study. Besides, a novel genetic algorithm, SDGA, is proposed. In this multi-society algorithm, each society is focused on a particular objective; however, in one society all the feasible answers will have been integrated and optimization will have been continued.