bluuebunny/crossref_metadata_2025_split huggingface dataset:
The results of CCM.G-K2.2017 key comparison
Authors: WU Shuqing , FENG Jinyang , LI Chunjian , SU Duowu , WANG Qiyu , HU Ruo , HU Lishuang , XU Jinyi , JI Wangxi , Ullrich Christian , Pálinkáš Vojtech , Kostelecký Jakub , Bilker-Koivula Mirjam , Näränen Jyri , Merlet Sébastien , Moigne Nicolas Le , Mizushima Shigeki , Francis Olivier , Choi In-Mook , Kim Min-Seok , Alotaibi Homood M , Aljuwayr Ahmed , Baumann Henri , Priruenrom Tasanee , Woradet Nattanan , KIRBAŞ Cafer , Coşkun İlkcan , Newel David 
Published: February 2020

The CCM.G-K2.2017 comparison was organised for the purpose of determination of the degree of equivalence of the national standards for free-fall acceleration measurement. The comparison was held in the Changping Campus of National Institute of Metrology China (NIM), from October to November in 2017. This is the first time that such a comparison is organized outside of the Europe continent and establishes a new global comparison sites in China. This comparison is also the largest ever organized with the participation of 13 instruments.
We give the list of the participants who actually performed measurements during the comparison, the data (raw absolute gravity measurements and their uncertainties) submitted by the participants as well as the results of the vertical gravity gradient at the comparison sites. The measurement strategy is briefly discussed and the data elaboration is presented. Finally, the results of the data adjustment are presented including the degrees of equivalence (DoE) of the absolute gravimeters and the key comparison reference values (KCRVs). Overall, the measurements of KC instruments are all consistent given the declared uncertainties.

Main text

To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.
The final report has been peer-reviewed and approved for publication by the CCM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).
The driven-dissipative Bose–Hubbard dimer: phase diagram and chaos
Authors: Giraldo Andrus , Krauskopf Bernd , Broderick Neil G R , Levenson Juan A , Yacomotti Alejandro M 
Published: February 2020

Abstract
We present the phase diagram of the mean-field driven-dissipative Bose–Hubbard dimer model. For a dimer with repulsive on-site interactions (U > 0) and coherent driving, we prove that

Z

2

-symmetry breaking, via pitchfork bifurcations with sizable extensions of the asymmetric solutions, require a negative tunneling parameter (J < 0). In addition, we show that the model exhibits deterministic dissipative chaos. The chaotic attractor emerges from a Shilnikov mechanism of a periodic orbit born in a Hopf bifurcation and, depending on its symmetry properties, it is either localized or not.
Vortex of beam shift induced by mono-chiral interface states
Authors: Yang Mou , Hou Quan-Teng , Wang Rui-Qiang 
Published: February 2020

Abstract
If an electron beam hits onto the interface of a Weyl-node-mismatch junction, a shift of the beam center on the interface happens when the beam is reflected or transmitted, where the junction consists of two materials of the same Weyl semimetal and one of them is rotated with respect to the other by an angle. We calculate the longitudinal and transverse shift components (the Goos–Hänchen and Imbert–Fedorov shifts). The reflection shift for total reflection cases is much more remarkable than the shift for transmitted cases. There exists a semi-vortex structure of the reflection shift on the in-plane k-space. The vortex is induced by the touch between bulk bands and interface bands. The formation of such interface bands is explained by the pulley-group model, in which the Weyl cones serve as wheels and the surface and interface bands act as ropes. A surface rope connects wheels of opposite chiralities, and an interface rope links the wheels for the two side materials of the same chirality.
Low threshold for nitrogen concentration saturation in headwaters increases regional and coastal delivery
Authors: Schmadel Noah M , Harvey Judson W , Alexander Richard B , Boyer Elizabeth W , Schwarz Gregory E , Gomez-Velez Jesus D , Scott Durelle , Konrad Christopher P 
Published: February 2020

Abstract
River corridors store, convey, and process nutrients from terrestrial and upstream sources, regulating delivery from headwaters to estuaries. A consequence of chronic excess nitrogen loading, as supported by theory and field studies in specific watersheds, is saturation of the biogeochemically-mediated nitrogen removal processes that weakens the capacity of the river corridor to remove nitrogen. Regional nitrogen models typically assume that removal capacity exhibits first-order behavior, scaling positively and linearly with increasing concentration, which may bias the estimation of where and at what rate nitrogen is removed by river corridors. Here we estimate the nitrogen concentration saturation threshold and its effects on annual nitrogen export from the Northeastern United States, revealing an average 42% concentration-induced reduction in headwater removal capacity. The weakened capacity caused an average 10% increase in the predicted delivery of riverine nitrogen from urban and agricultural watersheds compared to estimates using first-order process assumptions. Our results suggest that nitrogen removal may fall below a first-order rate process as riverine concentration increases above a threshold of 0.5 mg N l−1. Threshold behavior indicates that even modest mitigation of nitrogen concentration in river corridors above the threshold can cause a self-reinforcing boost to nitrogen removal.
A review of environmental impact indicators of cultural heritage buildings: a circular economy perspective
Authors: Foster Gillian , Kreinin Halliki 
Published: February 2020

Abstract
This paper is the first in-depth review of the state of the art of environmental impact indicators for adaptive reuse of cultural heritage (ARCH) buildings from a circular economy perspective. Buildings are a necessary component of sustainability planning because they are significant consumers of natural resources, producers of construction and demolition waste, and contributors to greenhouse gas emissions. In addition, buildings, particularly ARCH buildings, are long lasting; therefore, measuring and managing their environmental impacts is crucial to achieving the universal vision of a sustainable, low-carbon economy. The research answers the questions, ‘What are the environmental impact indicators used by individual ARCH building project analyses?’ and ‘Are the most commonly used indicators reflecting Circular Economy concepts?’ It synthesizes and defines current practice in the field whilst highlighting the gaps between practice and policy. Although the term ‘Circular Economy’ is not explicitly and routinely used in the literature, related concepts such as life cycle analysis, energy consumption reduction, energy efficiency, and embodied carbon/energy are evident at the project level. Concrete and measured environmental indicators are not mainstream. However, narratives of environmental protection feature prominently in the literature, indicating an environmental motivation for repurposing cultural heritage buildings. Further, there is a gap between common indicators of circularity and the ARCH building project level indicators shown in the dataset.
Increased population exposure to precipitation extremes under future warmer climates
Authors: Chen Huopo , Sun Jianqi , Li Huixin 
Published: February 2020

Abstract
Precipitation extremes are among the most dangerous climate-related hazards, and these hazards often cause large socioeconomic losses and exert severe human health impacts each year. It is thus crucial to assess future exposure changes to precipitation extremes under different warming scenarios to improve the mitigation of climate change. Here, we project future exposure using a set of Coupled Earth System Model low-warming simulations and RCP8.5 large ensemble simulations. We find that the precipitation extremes are projected to significantly increase over the coming century under different future warming scenarios at both the global and regional levels. Compared to a 1.5 °C warmer climate, the 0.5 °C of additional warming under a 2.0 °C warmer future would increase the number of days of global aggregate precipitation extremes by approximately 3.6% by the end of this century. As a result, the global aggregate exposure is reported to increase by approximately 2.3% if the surface air temperature increases to 2.0 °C rather than 1.5 °C. An increase in exposure is also obvious for most regions across the world, and the largest increase in the future occurs over North Asia in response to the 0.5 °C of additional warming. Furthermore, exposure would increase more rapidly if the temperature increased following the RCP8.5 pathway. The exposure increase varies at the regional level, but in most cases, climate change shows more influential than that of the population; in addition, this influence does not depend on the population outcomes used here.
The Impact Of Social Capital On Welfare : The Evidence From Urban Informal Sector In East Flood Canal (Bkt), Jakarta
Authors: Nurbaiti Beti , Chotib  
Published: February 2020

Abstract
The purpose of this study is to look at the relationship/correlation between social capital and welfare of migrant workers/traders who are the informal sector in the flood area of the eastern canal (BKT) of Jakarta. Migrant workers/traders who act as objects of research/respondents in urban areas in the informal sector are able to survive to improve their welfare through the support of their social capital where group and network, trust and solidarity are sub dimensions of social capital variables that influence research. The results showed that there was a significant correlation between social capital and the welfare of migrant workers/traders.
Importance of Apartment Environment for Children Development Case Study: Apartment in Margonda
Authors: Luthfi Muhammad , Hayatullah Imam Khomaeni , Dhita Ayomi P , Auliawan Althaf Gauhar , Chasif Muhammad 
Published: February 2020

Abstract
Indonesia has a Child-Friendly City or Kota Layak Anak program starting from the smallest community institutions. The zero points of this program are homes and families, including an apartment that currently is one of the residential choices. Children develop with different conditions from those who live in a landed house. An individualistic environment, lack of social interaction, and absence of open space affect the attitude and growth of children. This research found that the government does not yet have specific regulations related to the conditions for a child-friendly apartment construction. On the other hand, apartment developers have not yet provided the means to support sustainable social life and open space for children’s leisure activities. The synergy of government and apartment must be done to improve the child-friendly eligibility in apartments. This requirement can be used as a good marketing for family living in the apartments, especially at Margonda, Depok.
An Historical Study of The Ministry of Federal Territories building in Putrajaya within the Perspective of the Discourse on the National Architectural Identity of Administrative Architecture
Authors: Rasdi Mohd Tajuddin Mohd , Kanesh Kavin , Utaberta Nangkula , Asif Nayeem 
Published: February 2020

Abstract
With the establishment of a new administrative center in Putrajaya, an opportunity to address and to reaffirm a national architectural identity was presented. This research attempts to document and evaluate the design direction of administrative buildings in Putrajaya in response to the issue of establishing a national architectural identity. It will attempt to analyze the various inputs towards achieving the desired image, from the political, socio cultural as well as economic context. Additionally, it is crucial to understand the architectural identity thoughts and standpoint of the architect that was in charge of the design and implementation of the selected administrative building. This research uses a historical architectural interpretative methodology to analyze the building in place and aided with literature reviews, interviews with the relevant persons involved as well as on site direct observation and analysis of the building involved. The data obtained and presented reveals the thoughts that were the basis of forming the national architecture identity to an extent. The architect’s position in relation to achieving the design-brief but at the same time, utilizing his or her reflection and background formation. The research discovers that the architect’s design principles were to emphasize the local and Islamic characteristics to highlight the role of Islam within the new administrative center of Malaysia. The resulting outcome of this research will provide an understanding on how to critically engage in addressing architectural issues that form a national architecture identity.
Knowledge, attitude and practice on occupational safety and health among workers in petrochemical companies
Authors: Mukhtar Mohd Yasir Mohd , Yusof Afzan Mat , Isa Muhammad Lokman Md 
Published: February 2020

Abstract
Petroleum, petrochemical or oil and gas industry is one of the important industrial sectors in Malaysia. The safety in the workplace is one of the vital issues that need to be taken seriously. Every worker should know about the occupational safety and health organization to protect them from any accidents and injuries. The purpose of this study was to determine the level of knowledge, attitude and practice on occupational safety and health among workers in petrochemical companies at Teluk Kalung Industrial Area, Kemaman, Terengganu. A cross-sectional study was conducted among the workers in petrochemical companies. A convenience sampling method was used to collect the data. Descriptive statistics was used to describe the levels of knowledge, attitude and practice (KAP) among the workers. Chi-square test were used to test the association between level of knowledge with level of attitude, level of knowledge with level of practice and level of attitude with level of practice. From the study, it found that there was significant association between level of knowledge with level of attitude (p=0.002), no significant association between knowledge level and practice level (p=0.386) and was no significant difference between the level of attitude and the level of practice (p=0.117). Therefore, this study found that the knowledge level can significantly affect the attitude level of the workers. Training on occupational safety and health should be held to improve their knowledge and attitude. It is recommended for other researcher to extend this study to other places with same industrial sector as there were few studies of knowledge, attitude and practice on occupational safety and health in petrochemical companies conducted.
A study of clean water distribution network development at PDAM Tirta Barito in the city of Buntok
Authors: Wahyu Diana Eka , Sholichin Mohammad , Haribowo Riyanto 
Published: February 2020

Abstract
PDAM of the City of Buntok is the supplier of clean water needs for the areas of Buntok Kota, Hilirsper, and Jelapat Hamlets and Pamait Village. Population growth, water loss and utilization of discharge that has not been optimal have become obstacles in service. The aim of the research is to evaluate the existing distribution network and development plan until 2038 as viewed from the aspect of hydraulics and water quality using WaterCAD v8i software, as well as economic analysis to determine water prices. The available discharge is 10, 000 l/s. Simulation of the existing condition produces pressure and headloss gradient that meet technical requirements, while velocity did not meet technical criteria. Water requirements for 2038 need an additional Water Treatment Plant with capacities of 30 l/s and 20 l/s. The simulation of development results met the technical requirements, being 0.3-4.5 m/s, a headloss gradient 0-15 m/km, and pressure of 0.5-8 atm. Further, the hydraulic model was used to analyse the concentration of residual chlorine. Injection at the tank inlet amounted to a constant 0.4 mg/l. Simulation of produced residual chlorine met the requirements from 0.383-0.395 mg/l. Economic analysis resulted in a water price of Rp. 6, 100.00/m3, BCR 1.23, IRR 12.14 %, and BEP of 11 years. Based on the willingness to pay being Rp. 4, 200.00/m3, the value of required government subsidies is Rp. 13, 905, 747, 800.
Safety evaluation of the existing Grawan dam based on hydro-geotechnical behaviour conditions to ensure the availability of water resources
Authors: Asmaranto Runi , Priyantoro Dwi , Yustika Rini Desy , Khurotul Aini Ayu 
Published: February 2020

Abstract
Grawan Dam was built in 2004 to supply irrigation water and raw water. Lately, the dam has experienced various symptoms of damage to the overflow structure due to hydraulic behaviour and the possibility of overtopping of the dam, which endangers the stability of the dam. Therefore, it is necessary to evaluate the overflow structure system based on the current hydrological conditions and to review the slope stability. In this study an evaluation was carried out covering the safety of the slopes as well as the safety of the overflow building system. Dam slope safety was reviewed based on seepage and slope stability. The stability of the overflow structure security system was evaluated in normal and earthquake conditions. The results of the hydrological analysis on guard height, seepage that occurs safely to permit discharge, and slope stability showed 100% safety from permitted safety factors, and on hydraulic conditions resulted in proposed improvements for Vlugter ponds, transition channels, and energy dampers with planning for Q100, Q1000, and QPMF. Analysis for the stability of the overflow structure showed that it is safe against rolling and sliding, and meets the eccentricity and carrying capacity of the soil, being 100% safe.
Flow structures in dividing open channels: a review
Authors: Ibrahim Izihan , Legori Ibrahim Saerahany , Khan Sheroz 
Published: February 2020

Abstract
The supply of water for human consumption starts with the abstraction of ‘raw’ water from various sources. Most of these facilities convey raw water by pumping it directly from rivers via lateral channels to nearby water treatment plants, but this is badly affected by debris and sediment clogging at the intake structures. Lateral intakes are actually special cases of river bifurcations, where the channel naturally divides into two different branches, each carrying part of the flow and sediment. Many researchers have completed studies on bifurcations/diversions to understand the behaviour of water flow and sediment transport. However, a complete understanding of the phenomenon, especially in relation to secondary flows and vortices, is lacking up to this day. In fact, if this can be overcome, it will greatly contribute to the fundamental study of hydrodynamics at asymmetric fluvial bifurcations as well as in optimal design of diversions. Thus, the distribution of water flow in both main and lateral channels requires further detailed investigation. A review of the current state of research is discussed in this paper, with the objective of identifying the grey areas and gaps specifically in the investigation of complex turbulent behaviour of flow structures in open channels with lateral diversions.
The effect of horizontal drainage on sediment water content in the spoilbanks of Sengguruh reservoir, Brantas river, Indonesia
Authors: Edy Sartono Sugik , Asmaranto Runi , Primantyo Hendrawan Andre 
Published: February 2020

Abstract
In the Brantas River System, Sengguruh is the first reservoir in the direction of the river flow. This reservoir functions to protect Sutami Reservoir from severe sedimentation. The effective storage capacity was about 24% of its initial storage. In order to restore the storage, dredging work at Sengguruh Reservoir must be carried out over the course of the year. To support the dredging, it is necessary to carry out technical work so that sediments in the temporary spoilbanks can be immediately hauled to another place and then are ready to be refilled. Hauling can be done optimally if the sediment condition in the spoilbanks is quite dry. Therefore, it is necessary to know how horizontal drainage can affect the sediment water content in the spoilbanks.
Mapping of drought distribution using the deciles index in Rokan Watershed, Province of Riau, Indonesia
Authors: Andawayanti Ussy , Dara Lufira Rahmah , Dyah Awalita Rizkina 
Published: February 2020

AbstractAmong natural hazards, droughts are known to cause extensive damage and affect a significant number of people. Droughts also have wide impacts across the economy, society, health, and education. This research is expected to be a reference to estimate the existence of droughts. After performing the calculation of drought indices, a drought distribution map was made using a Geographic Information System (GIS). The results showed that the worst drought occurred in 2013 to 2014. The average comparison between the discharge data and the level of decile data of both rain stations is 50%. It is evident that the discharge and decile-level data have good conformity. The result of the analysis, when associated with the incidence of El Nino, has a suitability of 32%, which could be due to other factors that affect rain conditions in the study location. Based on the results of the analysis of the annual trend of rainfall accumulation, the year when climate change initially occurred was in 2003. From 1990 to 2003 the drought distribution conditions tended to be “Dry” to “Very Dry”, whereas from 2003 to 2014 the drought-level distribution conditions were likely to be “Dry” to “Very Dry”.
Changes in government policies for regulating irrigation water in order to maintain food productivity
Authors: Azis Subandiyah , Wayan Mundra I 
Published: February 2020

Abstract
Global Warming has had an impact on climate change, which has caused disturbance to the availability of surface water and the change in the allocation of irrigation water for agriculture. The agricultural sector is a sector that is vulnerable to climate change. Therefore, the provision of irrigation water must be adapted to climate change so that the supply of irrigation water for agricultural land is well maintained to increase food production. The method used in completing this research is the descriptive method, involving observations during the rainy season, first dry season, and second dry season, soil tests at the research site, and disseminating improvements to the provision of irrigation water, so that irrigation water is more efficient in usage and distributed at the right time at the start of the rainy season, first dry season, and second dry season. In distributing questionnaires and providing understanding of the occurrences of climate change, almost all stakeholders have understood that the provision of irrigation water must be refined and adapted to climate change. Dissemination has been carried out to all stakeholders including the government and relevant agencies. The government promises to change the irrigation water regulation policy in order to maintain food productivity.