Development of a data classification system for preterm birth cohort studies: the RECAP Preterm project

Background The small sample sizes available within many very preterm (VPT) longitudinal birth cohort studies mean that it is often necessary to combine and harmonise data from individual studies to increase statistical power, especially for studying rare outcomes. Curating and mapping data is a vital first step in the process of data harmonisation. To facilitate data mapping and harmonisation across VPT birth cohort studies, we developed a custom classification system as part of the Research on European Children and Adults born Preterm (RECAP Preterm) project in order to increase the scope and generalisability of research and the evaluation of outcomes across the lifespan for individuals born VPT. Methods The multidisciplinary consortium of expert clinicians and researchers who made up the RECAP Preterm project participated in a four-phase consultation process via email questionnaire to develop a topic-specific classification system. Descriptive analyses were calculated after each questionnaire round to provide pre- and post- ratings to assess levels of agreement with the classification system as it developed. Amendments and refinements were made to the classification system after each round. Results Expert input from 23 clinicians and researchers from the RECAP Preterm project aided development of the classification system’s topic content, refining it from 10 modules, 48 themes and 197 domains to 14 modules, 93 themes and 345 domains. Supplementary classifications for target, source, mode and instrument were also developed to capture additional variable-level information. Over 22,000 individual data variables relating to VPT birth outcomes have been mapped to the classification system to date to facilitate data harmonisation. This will continue to increase as retrospective data items are mapped and harmonised variables are created. Conclusions This bespoke preterm birth classification system is a fundamental component of the RECAP Preterm project’s web-based interactive platform. It is freely available for use worldwide by those interested in research into the long term impact of VPT birth. It can also be used to inform the development of future cohort studies.

The Mapping of Mosque Community to Improve Mosque Engagement in Community

The Mosque in the Prophet Muhammad SAW era had a strategic role. The role is to be a solution and provide prosperity for the Muslims in particular and the surrounding community in general. Currently, the mosque plays a narrower role. It is a provider of facilities for pilgrims to carry out routine worship. In order for this role to increase, the mosque administrator, called DKM (Mosque Prosperity Council), must know his congregation more closely so that he knows what is needed and then comes to provide solutions. This study aims to create and implement an information system to manage congregational data to improve the role of mosques in the community. The main material that was obtained and prepared was data on residents around the mosque and the stakeholder needs (leaders of organizations around the mosque such as the heads of hamlet (RW), neighbourhood (RT), and youth organizations). The citizen data and stakeholder needs are used to develop the system. Because the specifications of the requirements can change during system development, the development method chosen is the prototyping method. There are two main outputs of this activity, namely the availability of a congregational data mapping application, and the installation of internet network infrastructure at the mosque. The two outputs in their implementation have proven to be beneficial for the congregation and the surrounding community. The information system provides improved service quality to pilgrims and residents in various activities such as zakat and qurbani. Meanwhile, Internet infrastructure provides new hope in easing the burden of community quotas and bringing children closer to the mosque.

Encoding Conversion Algorithm of Quaternary Triangular Mesh

In the process of global information construction, different fields have built their own discrete global grid systems (DGGS). With the development of big data technology, data exchange, integration, and update have gradually become a trend, as well as the associative integration of different DGGS. Due to the heterogeneity of DGGS and the different encoding rules, how to build the encoding conversion rules and data mapping relationship between the same object in various DGGS is an effective support and key technology to achieve the interoperability of DGGS. As a kind of multipurpose DGGS, the quaternary triangular mesh (QTM) has become an effective spatial framework for constructing the digital earth because of its simple structure. At present, there are many schemes for QTM encoding research, which plays a key role in the development of QTM, but at the same time, it also leads to difficulties in the communication and integration of QTM under different encoding. In order to solve this problem, we explore the characteristics of QTM encoding, and put forward three conversion algorithms: resampling conversion algorithm, hierarchical conversion algorithm, and row–column conversion algorithm.

A bibliometric analysis of materials research in Indonesian journal using VOSviewer

This study aims to analyze the scope of research on materials using a bibliometric review and data mapping process. Research data on materials were obtained from databases from selected journals in Indonesia. The search is done using a search engine that contains data on all related journal articles. The search process is based on a topic area with titles, keywords, and abstracts in the study material. The mapping process is done using VOSviewer. A total of 60 relevant articles were found. The results showed that the most studied study material was in the 2016-2021 range. Meanwhile, in the field of chemistry, the “acid” term is the most widely discussed material. Among all contributing countries, Indonesia is the largest country with 43 articles. Indonesia also has the most links with other countries, namely 8 links. Through VOSviewer we analyze how many articles have been published about the material and its relation to the topic area. This review can certainly provide a reference point for further research related to materials.

Characterizing Concealed Fault Systems by Integrating Field Data Mapping and Laboratory Experiments: A Case Study of the Huawa Area in East China

Concealed faults can be important for understanding the regional structural geology and the subsurface fluid distribution. However, such faults are usually difficult to identify and characterize because of their small size and complex mechanism. To address this issue, we present an integrated approach of three-dimensional seismic data mapping and physical modeling experiments to examine the geometrical and kinematic characteristics of concealed faults and their relationship with the main faults in the Huawa area, east China. Three series of experiments were designed to characterize the differences in the scale of concealed faults and main faults, which also allowed us to examine how the concealed faults grow with the main faults in the area. Through this integrated study, we have demonstrated that: 1) NE-SW-striking concealed faults are below the resolution of the available seismic datasets and not easily recognized in seismic sections and that most of them grew later than the E-W-striking main faults, with some of them having grown at the same time; 2) pre-existing faults, rather than asymmetry of the basin structure, affect the faults that develop during subsequent episodes of extension; 3) E-W-striking pre-existing faults under a NW-SE stress direction of extension are most likely the formation mechanism of concealed faults. This study is of reference value in the interpretation of concealed faults in other regions.

Effect of Nanoparticles Surface Bonding and Aspect Ratio on Mechanical Properties of Highly Cross-Linked Epoxy Nanocomposites: Mesoscopic Simulations

The paper aims to study the mechanical properties of epoxy resin filled with clay nanoparticles (NPs), depending on their shapes and content on the surface of a modifying agent capable of forming covalent bonds with a polymer. The cylindrical clay nanoparticles with equal volume and different aspects ratios (disks, barrel, and stick) are addressed. The NPs’ bonding ratio with the polymer (RGC) is determined by the fraction of reactive groups and conversion time and varies from RGC = 0 (non-bonded nanoparticles) to RGC = 0.65 (more than half of the surface groups are linked with the polymer matrix). The performed simulations show the so-called load-bearing chains (LBCs) of chemically cross-linked monomers and modified nanoparticles to determine the mechanical properties of the simulated composites. The introduction of nanoparticles leads to the breaking of such chains, and the chemical cross-linking of NPs with the polymer matrix restores the LBCs and strengthens the composite. At small values of RGC, the largest value of the elastic modulus is found for systems filled with nanoparticles having the smallest surface area, and at high values of RGC, on the contrary, the systems containing disk-shaped particles with the largest surface area have a larger elastic modulus than the others. All calculations are performed within the framework of a mesoscopic model based on accurate mapping of the atomistic structures of the polymer matrix and nanoparticles into coarse-grained representations, which, if necessary, allow reverse data mapping and quantitative assessment of the state of the filled epoxy resin. On the other hand, the obtained data can be used to design the functional materials with specified mechanical properties based on other practically significant polymer matrices and nanofillers.