Moussab/ORKG-training-evaluation-set huggingface dataset:
Research field: Science
Title: Robust ship scheduling with multiple time windows
Abstract: We present a ship scheduling problem concerned with the pickup and delivery of bulk cargoes within given time windows. As the ports are closed for service at night and during weekends, the wide time windows can be regarded as multiple time windows. Another issue is that the loading/discharging times of cargoes may take several days. This means that a ship will stay idle much of the time in port, and the total time at port will depend on the ship's arrival time. Ship scheduling is associated with uncertainty due to bad weather at sea and unpredictable service times in ports. Our objective is to make robust schedules that are less likely to result in ships staying idle in ports during the weekend, and impose penalty costs for arrivals at risky times (i.e., close to weekends). A set partitioning approach is proposed to solve the problem. The columns correspond to feasible ship schedules that are found a priori. They are generated taking the uncertainty and multiple time windows into account. The computational results show that we can increase the robustness of the schedules at the sacrifice of increased transportation costs. © 2002 Wiley Periodicals, Inc. Naval Research Logistics 49: 611–625, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/nav.10033
Extracted statement — Year: 2002
Research field: Science
Title: Decomposition algorithms for the design of a nonsimultaneous capacitated evacuation tree network
Abstract: In this article, we examine the design of an evacuation tree, in which evacuation is subject to capacity restrictions on arcs. The cost of evacuating people in the network is determined by the sum of penalties incurred on arcs on which they travel, where penalties are determined according to a nondecreasing function of time. Given a discrete set of disaster scenarios affecting network population, arc capacities, transit times, and penalty functions, we seek to establish an optimal a priori evacuation tree that minimizes the expected evacuation penalty. The solution strategy is based on Benders decomposition, in which the master problem is a mixed‐integer program and each subproblem is a time‐expanded network flow problem. We provide efficient methods for obtaining primal and dual subproblem solutions, and analyze techniques for improving the strength of the master problem formulation, thus reducing the number of master problem solutions required for the algorithm's convergence. We provide computational results to compare the efficiency of our methods on a set of randomly generated test instances. © 2008 Wiley Periodicals, Inc. NETWORKS, 2009
Extracted statement — Year: 2009
Research field: Science
Title: The Role of Social Media during Queensland Floods:
An Empirical Investigation on the Existence of Multiple Communities of Practice (MCoPs)
Abstract: The notion of communities getting together during a disaster to help each other is common. However, how does this communal activity happen within the online world? Here we examine this issue using the Communities of Practice (CoP) approach. We extend CoP to multiple CoP (MCoPs) and examine the role of social media applications in disaster management, extending work done by Ahmed (2011). Secondary data in the form of newspaper reports during 2010 to 2011 were analysed to understand how social media, particularly Facebook and Twitter, facilitated the process of communication among various communities during the Queensland floods in 2010. The results of media-content analysis along with the findings of relevant literature were used to extend our existing understanding on various communities of practice involved in disaster management, their communication tasks and the role of Twitter and Facebook as common conducive platforms of communication during disaster management alongside traditional communication channels.
Extracted statement — paper: publication_year: 2011
Research field: Science
Title: Assessment of copy number variation using the Illumina Infinium 1M SNP-array: A comparison of methodological approaches in the Spanish Bladder Cancer/EPICURO study
Abstract: High‐throughput single nucleotide polymorphism (SNP)‐array technologies allow to investigate copy number variants (CNVs) in genome‐wide scans and specific calling algorithms have been developed to determine CNV location and copy number. We report the results of a reliability analysis comparing data from 96 pairs of samples processed with CNVpartition, PennCNV, and QuantiSNP for Infinium Illumina Human 1Million probe chip data. We also performed a validity assessment with multiplex ligation‐dependent probe amplification (MLPA) as a reference standard. The number of CNVs per individual varied according to the calling algorithm. Higher numbers of CNVs were detected in saliva than in blood DNA samples regardless of the algorithm used. All algorithms presented low agreement with mean Kappa Index (KI) <66. PennCNV was the most reliable algorithm (KIw=98.96) when assessing the number of copies. The agreement observed in detecting CNV was higher in blood than in saliva samples. When comparing to MLPA, all algorithms identified poorly known copy aberrations (sensitivity = 0.19–0.28). In contrast, specificity was very high (0.97–0.99). Once a CNV was detected, the number of copies was truly assessed (sensitivity >0.62). Our results indicate that the current calling algorithms should be improved for high performance CNV analysis in genome‐wide scans. Further refinement is required to assess CNVs as risk factors in complex diseases.Hum Mutat 32:1–10, 2011. © 2011 Wiley‐Liss, Inc.
Extracted statement — Year: 2011
Research field: Science
Title: ICT-Enabled Community Empowerment in Crisis
Response: Social Media in Thailand Flooding 2011
Abstract: In this paper, we examine the emerging use of ICT in social phenomena such as natural disasters. Researchers have acknowledged that a community possesses the capacity to manage the challenges in crisis response on its own. However, extant IS studies focus predominantly on IS use from the crisis response agency’s perspective, which undermines communities’ role. By adopting an empowerment perspective, we focus on understanding how social media empowers communities during crisis response. As such, we present a qualitative case study of the 2011 Thailand flooding. Using an interpretive approach, we show how social media can empower the community from three dimensions of empowerment process (structural, psychological, and resource empowerment) to achieve collective participation, shared identification, and collaborative control in the community. We make two contributions: 1) we explore an emerging social consequence of ICT by illustrating the roles of social media in empowering communities when responding to crises, and 2) we address the literature gap in empowerment by elucidating the actualization process of empowerment that social media as a mediating structure enables.
Extracted statement — Year: 2011
Research field: Science
Title: Role of Social Media in Social Change:
An Analysis of Collective Sense Making
During the 2011 Egypt Revolution
Abstract: This study explores the role of social media in social change by analyzing Twitter data collected during the 2011 Egypt Revolution. Particular attention is paid to the notion of collective sense making, which is considered a critical aspect for the emergence of collective action for social change. We suggest that collective sense making through social media can be conceptualized as human-machine collaborative information processing that involves an interplay of signs, Twitter grammar, humans, and social technologies. We focus on the occurrences of hashtags among a high volume of tweets to study the collective sense-making phenomena of milling and keynoting. A quantitative Markov switching analysis is performed to understand how the hashtag frequencies vary over time, suggesting structural changes that depict the two phenomena. We further explore different hashtags through a qualitative content analysis and find that, although many hashtags were used as symbolic anchors to funnel online users' attention to the Egypt Revolution, other hashtags were used as part of tweet sentences to share changing situational information. We suggest that hashtags functioned as a means to collect information and maintain situational awareness during the unstable political situation of the Egypt Revolution.
Extracted statement — Year: 2011
Research field: Science
Title: ICT-Enabled Community Empowerment in Crisis
Response: Social Media in Thailand Flooding 2011.
Abstract: In this paper, we examine the emerging use of ICT in social phenomena such as natural disasters. Researchers have acknowledged that a community possesses the capacity to manage the challenges in crisis response on its own. However, extant IS studies focus predominantly on IS use from the crisis response agency’s perspective, which undermines communities’ role. By adopting an empowerment perspective, we focus on understanding how social media empowers communities during crisis response. As such, we present a qualitative case study of the 2011 Thailand flooding. Using an interpretive approach, we show how social media can empower the community from three dimensions of empowerment process (structural, psychological, and resource empowerment) to achieve collective participation, shared identification, and collaborative control in the community. We make two contributions: 1) we explore an emerging social consequence of ICT by illustrating the roles of social media in empowering communities when responding to crises, and 2) we address the literature gap in empowerment by elucidating the actualization process of empowerment that social media as a mediating structure enables.
Extracted statement — Year: 2011
Research field: Science
Title: Second generation BtL type biofuels – a production cost analysis
Abstract: The objective of this paper is to address the issue of the production cost of second generation biofuels via the thermo-chemical route. The last decade has seen a large number of technical–economic studies of second generation biofuels. As there is a large variation in the announced production costs of second generation biofuels in the literature, this paper clarifies some of the reasons for these variations and helps obtain a clearer picture. This paper presents simulations for two pathways and comparative production pathways previously published in the literature in the years between 2000 and 2011. It also includes a critical comparison and analysis of previously published studies. This paper does not include studies where the production is boosted with a hydrogen injection to improve the carbon yield. The only optimisation included is the recycle of tail gas. It is shown that the fuel can be produced on a large scale at prices of around 1.0–1.4 € per l. Large uncertainties remain however with regard to the precision of the economic predictions, the technology choices, the investment cost estimation and even the financial models to calculate the production costs. The benefit of a tail gas recycle is also examined; its benefit largely depends on the selling price of the produced electricity.
Extracted statement — Year data: 2011
Research field: Science
Title: Lessons learned from the use of social media in
combating a crisis: A case study of 2011 Thailand flooding disaster
Abstract: Social media have played integral roles in many crises around the world. Thailand faced severe floods between July 2011 and January 2012, when more than 13.6 million people were affected. This 7-month disaster provides a great opportunity to understand the use of social media for managing a crisis project before, during, and after its occurrence. However, current literature lacks a theoretical framework on investigating the relationship between social media and crisis management from the project management perspective. The paper adopts a social media-based crisis management framework and the structuration theory in investigating and analyzing social media. The results suggest that social media should be utilized to meet different information needs in order to achieve the success of managing a future crisis project.
Extracted statement — paper: publication_year: 2012
Research field: Science
Title: New insights into the prognostic impact of the karyotype in MDS and correlation with subtypes: evidence from a core dataset of 2124 patients
Abstract: We have generated a large, unique database that includes morphologic, clinical, cytogenetic, and follow-up data from 2124 patients with myelodysplastic syndromes (MDSs) at 4 institutions in Austria and 4 in Germany. Cytogenetic analyses were successfully performed in 2072 (97.6%) patients, revealing clonal abnormalities in 1084 (52.3%) patients. Numeric and structural chromosomal abnormalities were documented for each patient and subdivided further according to the number of additional abnormalities. Thus, 684 different cytogenetic categories were identified. The impact of the karyotype on the natural course of the disease was studied in 1286 patients treated with supportive care only. Median survival was 53.4 months for patients with normal karyotypes (n = 612) and 8.7 months for those with complex anomalies (n = 166). A total of 13 rare abnormalities were identified with good (+1/+1q, t(1q), t(7q), del(9q), del(12p), chromosome 15 anomalies, t(17q), monosomy 21, trisomy 21, and -X), intermediate (del(11q), chromosome 19 anomalies), or poor (t(5q)) prognostic impact, respectively. The prognostic relevance of additional abnormalities varied considerably depending on the chromosomes affected. For all World Health Organization (WHO) and French-American-British (FAB) classification system subtypes, the karyotype provided additional prognostic information. Our analyses offer new insights into the prognostic significance of rare chromosomal abnormalities and specific karyotypic combinations in MDS.
Extracted statement — Number of patients studied: 2072
Research field: Virology
Title: Porcine Circoviruses and Herpesviruses Are Prevalent in an Austrian Game
Abstract: During the annual hunt in a privately owned Austrian game population in fall 2019 and 2020, 64 red deer (Cervus elaphus), 5 fallow deer (Dama dama), 6 mouflon (Ovis gmelini musimon), and 95 wild boars (Sus scrofa) were shot and sampled for PCR testing. Pools of spleen, lung, and tonsillar swabs were screened for specific nucleic acids of porcine circoviruses. Wild ruminants were additionally tested for herpesviruses and pestiviruses, and wild boars were screened for pseudorabies virus (PrV) and porcine lymphotropic herpesviruses (PLHV-1-3). PCV2 was detectable in 5% (3 of 64) of red deer and 75% (71 of 95) of wild boar samples. In addition, 24 wild boar samples (25%) but none of the ruminants tested positive for PCV3 specific nucleic acids. Herpesviruses were detected in 15 (20%) ruminant samples. Sequence analyses showed the closest relationships to fallow deer herpesvirus and elk gammaherpesvirus. In wild boars, PLHV-1 was detectable in 10 (11%), PLHV-2 in 44 (46%), and PLHV-3 in 66 (69%) of animals, including 36 double and 3 triple infections. No pestiviruses were detectable in any ruminant samples, and all wild boar samples were negative in PrV-PCR. Our data demonstrate a high prevalence of PCV2 and PLHVs in an Austrian game population, confirm the presence of PCV3 in Austrian wild boars, and indicate a low risk of spillover of notifiable animal diseases into the domestic animal population.
Extracted statement — has date : fall 2019
Research field: Virology
Title: Dynamics of Antibodies to Ebolaviruses in an Eidolon helvum Bat Colony in
Abstract: The ecology of ebolaviruses is still poorly understood and the role of bats in outbreaks needs to be further clarified. Straw-colored fruit bats (Eidolon helvum) are the most common fruit bats in Africa and antibodies to ebolaviruses have been documented in this species. Between December 2018 and November 2019, samples were collected at approximately monthly intervals in roosting and feeding sites from 820 bats from an Eidolon helvum colony. Dried blood spots (DBS) were tested for antibodies to Zaire, Sudan, and Bundibugyo ebolaviruses. The proportion of samples reactive with GP antigens increased significantly with age from 0–9/220 (0–4.1%) in juveniles to 26–158/225 (11.6–70.2%) in immature adults and 10–225/372 (2.7–60.5%) in adult bats. Antibody responses were lower in lactating females. Viral RNA was not detected in 456 swab samples collected from 152 juvenile and 214 immature adult bats. Overall, our study shows that antibody levels increase in young bats suggesting that seroconversion to Ebola or related viruses occurs in older juvenile and immature adult bats. Multiple year monitoring would be needed to confirm this trend. Knowledge of the periods of the year with the highest risk of Ebolavirus circulation can guide the implementation of strategies to mitigate spill-over events.
Extracted statement — has date : 19-Nov
Research field: Virology
Title: Porcine Circoviruses and Herpesviruses Are Prevalent in an Austrian Game
Abstract: During the annual hunt in a privately owned Austrian game population in fall 2019 and 2020, 64 red deer (Cervus elaphus), 5 fallow deer (Dama dama), 6 mouflon (Ovis gmelini musimon), and 95 wild boars (Sus scrofa) were shot and sampled for PCR testing. Pools of spleen, lung, and tonsillar swabs were screened for specific nucleic acids of porcine circoviruses. Wild ruminants were additionally tested for herpesviruses and pestiviruses, and wild boars were screened for pseudorabies virus (PrV) and porcine lymphotropic herpesviruses (PLHV-1-3). PCV2 was detectable in 5% (3 of 64) of red deer and 75% (71 of 95) of wild boar samples. In addition, 24 wild boar samples (25%) but none of the ruminants tested positive for PCV3 specific nucleic acids. Herpesviruses were detected in 15 (20%) ruminant samples. Sequence analyses showed the closest relationships to fallow deer herpesvirus and elk gammaherpesvirus. In wild boars, PLHV-1 was detectable in 10 (11%), PLHV-2 in 44 (46%), and PLHV-3 in 66 (69%) of animals, including 36 double and 3 triple infections. No pestiviruses were detectable in any ruminant samples, and all wild boar samples were negative in PrV-PCR. Our data demonstrate a high prevalence of PCV2 and PLHVs in an Austrian game population, confirm the presence of PCV3 in Austrian wild boars, and indicate a low risk of spillover of notifiable animal diseases into the domestic animal population.
Extracted statement — has date : 2019
Research field: Virology
Title: Porcine Circoviruses and Herpesviruses Are Prevalent in an Austrian Game
Abstract: During the annual hunt in a privately owned Austrian game population in fall 2019 and 2020, 64 red deer (Cervus elaphus), 5 fallow deer (Dama dama), 6 mouflon (Ovis gmelini musimon), and 95 wild boars (Sus scrofa) were shot and sampled for PCR testing. Pools of spleen, lung, and tonsillar swabs were screened for specific nucleic acids of porcine circoviruses. Wild ruminants were additionally tested for herpesviruses and pestiviruses, and wild boars were screened for pseudorabies virus (PrV) and porcine lymphotropic herpesviruses (PLHV-1-3). PCV2 was detectable in 5% (3 of 64) of red deer and 75% (71 of 95) of wild boar samples. In addition, 24 wild boar samples (25%) but none of the ruminants tested positive for PCV3 specific nucleic acids. Herpesviruses were detected in 15 (20%) ruminant samples. Sequence analyses showed the closest relationships to fallow deer herpesvirus and elk gammaherpesvirus. In wild boars, PLHV-1 was detectable in 10 (11%), PLHV-2 in 44 (46%), and PLHV-3 in 66 (69%) of animals, including 36 double and 3 triple infections. No pestiviruses were detectable in any ruminant samples, and all wild boar samples were negative in PrV-PCR. Our data demonstrate a high prevalence of PCV2 and PLHVs in an Austrian game population, confirm the presence of PCV3 in Austrian wild boars, and indicate a low risk of spillover of notifiable animal diseases into the domestic animal population.
Extracted statement — has date : 2020