bluuebunny/crossref_metadata_2025_split huggingface dataset:
Adapting a continuous flow cryostat and a plate DAC to do high pressure Raman experiments at low temperatures
Authors: Gohil Smita , Ghosh Shankar , Tare Satej , Chitnis Abhishek , Garg Nandini 
Published: December 2021

We present a method for modifying a continuous flow cryostat and a steel plate DAC (Diamond Anvil Cell) to perform high pressure micro-Raman experiments at low temperatures. Despite using a steel DAC with a lower specific heat capacity (∼335 J/kg K), this setup can routinely perform high pressure (∼10 GPa) measurements at temperatures as low as 26 K. This adaptation is appropriate for varying the temperature of the sample while keeping it at a constant pressure. We determined that the temperature variation across the sample chamber is about 1 K using both direct temperature measurements and finite element analysis of the heat transport across the DAC. We present Raman spectroscopy results on elemental selenium at high pressures and low temperatures using our modified setup.
Metamaterial with anisotropic mass density for full mode-converting transmission of elastic waves in the ultralow frequency range
Authors: Yang Xiongwei , Chai Yijun , Li Yueming 
Published: December 2021

The bimodal quarter-wave impedance matching theory, with which an incident longitudinal (transverse) wave can be completely converted to a transmitted transverse (longitudinal) wave, requires that the matching element must exhibit specific anisotropy. Previously, the specific anisotropy was satisfied between components of the stiffness tensor, and the phenomenon was only realized in the ultrasonic frequency range. In this work, we find that such anisotropy can also be satisfied between components of the mass density tensor, which allows an ultralow frequency realization. Meanwhile, the stiffness should also exhibit special anisotropy. To meet such unique anisotropy, we propose to design ternary locally resonant metamaterials. The dipolar local resonance around the lowest bandgap allows us to deal with the effective stiffness and mass density separately. The requirement on stiffness is satisfied by designing the matrix, and the mass anisotropy is realized through design of the coating layer. With the designed metamaterials, the matching elements can convert wave modes, which have a wavelength much larger than the element’s width. Considering that mode conversion is a fundamental phenomenon in the elastic field, our finds and design can be critically useful to extend its application in the ultralow frequency range.
A decoupled scheme to solve the mass and momentum conservation equations of the improved Darcy–Brinkman–Forchheimer framework in matrix acidization
Authors: Wu Yuanqing , Kou Jisheng , Wu Yu-Shu , Sun Shuyu , Xia Yilin 
Published: December 2021

Matrix acidization simulation is a challenging task in the study of flows in porous media due to the changing porosity in the procedure. The improved Darcy–Brinkman–Forchheimer framework is one model to do this simulation. In this framework, the mass and momentum conservation equations are discretized to form a pressure–velocity linear system. However, the coefficient matrix of the linear system has a large condition number, and solving the linear system belongs to the saddle point problem. As a result of that, convergence is hard to achieve when solving it with iterative solvers. It is well known that the scale of the linear systems in matrix acidization simulation is large, and therefore, the usage of iterative solvers is required. Thus, a decoupled scheme is proposed in this work to decouple the pressure–velocity linear system into two independent linear systems: one is to solve for pressure, and the other one is to solve for velocity. It is emphasized that both of the linear systems are discretized from the elliptical partial differential equations, which guarantees fast convergence can be achieved by iterative solvers. A numerical experiment is carried out to demonstrate the correctness of the decoupled scheme and its higher computing efficiency. After that, the decoupled scheme is applied in investigating the factors that cannot change the optimal injected velocity and the dissolution pattern in matrix acidization.
Regional variation in British English voice quality
Authors: Gold Erica , Kirchhübel Christin , Earnshaw Kate , Ross Sula 
Published: December 2021

AbstractThis study considers regional variation of voice quality in two varieties of British English – Southern Standard British English and West Yorkshire English. A comparison of voice quality profiles for three closely related but not identical northern varieties within West Yorkshire is also considered. Our findings do not contradict the small subset of previous research which explored regional and/or social variation in voice quality in British English insofar as regionality may play a small role in a speaker’s voice quality profile. However, factors such as social standing and identity could perhaps be even more relevant. Even when considering homogeneous groups of speakers, it is not the case that there is a cohesive voice quality profile that can be attached to every speaker within the group. The reason for this, we argue, is the speaker-specificity inherent in voice quality.
Towards a higher order thinking skills-oriented translation competence model
Authors: Tan Shuxin , Cho Young Woo 
Published: December 2021

AbstractThis article aims at exploring translation competence (TC) from the perspective of higher-order thinking skills (HOTS), and developing a HOTS-oriented TC model accordingly. The underlying assumption is that the translation competence needed to solve ill-structured translation problems is highly integrated HOTS in essence. Based on this assumption, a framework for HOTS-oriented TC is presented, using features from the PACTE group’s TC model, and combining it with HOTS-specific features. Subsequently, a HOTS-oriented TC model is constructed, which consists of three interrelated parts: HOTS (i.e., translation problem-solving ability, translation decision-making ability, translation creative-thinking ability, and translation critical thinking ability); translation knowledge, and translation thinking dispositions. Additionally, two other assumptions are made as scaffolding to support our HOTS-oriented TC model. Finally, implications for TC studies and translation pedagogy are provided.
Traveling waves and spreading properties for a reaction-diffusion competition model with seasonal succession*
Authors: Wang Mingxin , Zhang Qianying , Zhao Xiao-Qiang 
Published: December 2021

Abstract
In this paper, we investigate the propagation dynamics of a reaction–diffusion competition model with seasonal succession in the whole space. Under the weak competition condition, the corresponding kinetic system admits a globally stable positive periodic solution

(

u

^

(

t

)

,

v

^

(

t

)

)

. By the method of upper and lower solutions and the Schauder fixed point theorem, we first obtain the existence and nonexistence of traveling wave solutions connecting (0, 0) to

(

u

^

(

t

)

,

v

^

(

t

)

)

. Then we use the comparison arguments to establish the spreading properties for a large class of solutions.
Stochastic gravitational-wave background from metastable cosmic strings
Authors: Buchmüller Wilfried , Domcke Valerie , Schmitz Kai 
Published: December 2021

Abstract
A metastable cosmic-string network is a generic consequence
of many grand unified theories (GUTs) when combined with cosmic
inflation. Metastable cosmic strings are not topologically stable,
but decay on cosmic time scales due to pair production of GUT
monopoles. This leads to a network consisting of metastable long
strings on superhorizon scales as well as of string loops and
segments on subhorizon scales. We compute for the first time the
complete stochastic gravitational-wave background (SGWB) arising
from all these network constituents, including several technical
improvements to both the derivation of the loop and segment
contributions. We find that the gravitational waves emitted by
string loops provide the main contribution to the gravitational-wave
spectrum in the relevant parameter space. The resulting spectrum is
consistent with the tentative signal observed by the NANOGrav and
Parkes pulsar timing collaborations for a string tension of G
μ ∼ 10-11…-7 and has ample discovery space for ground- and
space-based detectors. For GUT-scale string tensions, G
μ ∼ 10-8…-7, metastable strings predict a SGWB in the
LIGO-Virgo-KAGRA band that could be discovered in the near future.
Residential-type urban forest design in Buana Cicalengka Raya Estate, Cicalengka District, Bandung Regency
Authors: Hidayat Y , Sudirja R , Fadhilah M F , Dhafien I M 
Published: December 2021

Abstract
The existence of urban forests in the middle of residential areas will provide added value for beauty, comfort, and environmental health that could increase the value of land and buildings in the residential area. Residential-type urban forests need to be well designed so that they are compatible with the type of building and match the residential environment’s conditions. The purpose of this design is to create an appealing, multi-benefit urban forest design, which includes aspects of the urban forest theme concept, zoning arrangement, and vegetation arrangement, including species composition, density, and planting pattern. The outcome of the design resulted in a residential type, urban forest design by the theme of RINDU BCR Urban Forest (Relaxation, Inspiration, and Education for Buana Cicalengka Raya). The RINDU BCR Urban Forest functions as (1) a place of relaxation, (2) seeking positive inspiration, and (3) environmental education for the community. The planting pattern design consists of four types, namely: (1) opposite line pattern; (2) zigzag line pattern; (3) single line pattern, and (4) mixed pattern. The front-facing area of the RINDU BCR Urban Forest is designed by planting tree species that have the criteria of being ornamental, providing shade and safety, having a height of more than 300 cm, and a diameter of more than 10 cm.
The damage profile of kerai payung (Filicium desipiens) in University of Sumatera Utara green space based on Forest Health Monitoring (FHM) method
Authors: Susilowati A , Ahmad A G , Siburian H , Iswanto A H , Rachmat H H , Zaitunah A , Samsuri  , Dwiyanti F G , Ginting I M 
Published: December 2021

Abstract
The University of Sumatera Utara (USU) campus in Medan is a green space area with numerous social and environmental benefits. In the USU campus, trees were planted for providing inhabitant needs such as fresh air, pollutant absorber, medicine, wood, fuel, fiber, aesthetic, and food. One of the medicine, wood, and aesthetic species that grows on the USU campus is kerai payung (Filicium decipiens). Along with fallen trees and broken branches incidents, detection of kerai payung trees damage in the campus USU was needed to prevent undesirable incidents and provide recommendations for maintenance. This research aims to get information on the distribution and damage profile of Kerai payung. To determine and assess the damage profile, the Forest Health Monitoring (FHM) approach was used. Research showed that the Kere payung diameter structure ranges from 8 cm to 74 cm. Based on FHM, damage types of Kerai payung trees in USU campus are as follows; broken or dead branch, open wound, brum in branch, loss of dominant tips, leaves change color and konk. While the damage location is found in branches, buds and tips, lower and upper bole, leaves and upper bole. Our research pointed out that maintaining activities still be needed to avoid further damages.
Assessment of forest health status of Panca Indah Lestari Community Plantation Forest (case study in Bukit Layang Village, Bakam District, Bangka Regency, Bangka Belitung Province)
Authors: Arwanda E R , Safe’i R 
Published: December 2021

Abstract
Currently, community plantation forests play an essential role in providing wood supply for the timber industry with due regard to sustainability. One way to achieve the sustainability aspects of forest management is by conducting monitoring forest health. This study aims to determine the value of the health status of the Panca Indah Lestari Community Plantation Forest. This community plantation forest is located in Bukit Layang Village, Bakam District, Bangka Regency, Bangka Belitung Province. The stages of this research include: determining the number of cluster-plots using sampling intensity based on the area of community plantation forest, making cluster plots based on Forest Health Monitoring (FHM) cluster-plot design, collecting data by measuring the ecological indicators of forest health (productivity and vitality) based on the FHM method, as well as data analysis and processing using the Forest Health Assessment Information System. The results showed that the health status of the Panca Indah Lestari Community Plantation Forest had a range of values ranging from 1,890 - 5,530. The average health status value of Panca Indah Lestari Community Plantation Forest is 4,210, which was included in the medium category. Thus, the value of the health status of community plantation forests illustrates that the conditions for productivity and vitality indicators are insufficient. Knowing the forest condition’s status value helps managers provide recommendations in making decisions on sustainable community plantation forest management.
Distribution record of the invasive drywood termite Cryptotermes domesticus (Haviland) in Riau Province, Sumatra Island, Indonesia
Authors: Himmi S K , Fajar A , Wikantyoso B , Tjahyono B , Nurjanah N , Tarmadi D , Yusuf S 
Published: December 2021

Abstract
The domestic drywood termite, Cryptotermes domesticus (Haviland), has been referred to in past literature as a native species originating in the Southeast Asia region. The species come to prominence due to its destructive damage to a dried wood log by creating passages and nests inside the wood. Its economic importance makes the species one of the monitored species in inter-island transport as part of a biosecurity initiative by the Indonesian Government. In the present study, we collected drywood termites’ specimens from four locations in Riau Province, Sumatra Island, and conducted morphological identification. In the end, we verify the presence of C. domesticus in all four sites studied. This finding establishes the continued presence of the species in Sumatra, one of the areas reported as the native distribution of the species other than Java and Kalimantan following the Holmgren reports in 1913. We believe this report can be an addition to the current status of C. domesticus in Sumatra and also be an addition to the biosecurity initiative list of monitored species regarding the C. domesticus native range in Indonesia.
Oil palm plantation in ex-coal mined site: A case study in East Kalimantan, Indonesia
Authors: Amanah F , Yunanto T 
Published: December 2021

Abstract
The oil palm plantation in the ex-coal area is new hope for renewable energy. Oil palm is also known as an important source of raw material for many products and the plantation area is expanding. Mine reclamation area may be suitable for oil palm but there are challenges for its development. This study aims to determine the land suitability of the ex-coal mined site for oil palm and evaluate the growth and yield compared to the plantation in commercial cultivation from the previous studies. The study in a coal mine company in Indonesia used soil quality, rainfall, vegetation growth and yield production data in 4, 5, 6 and 7-year-old-plantations. The result showed that the ex-coal mined site referred to S2 or suitable with limited factors in the 7-year-old-plantation area, while S3 or marginal soil in other areas. The soil mostly had low nitrogen content and cation exchange capacity as if the initial condition before mining and required additional manure and nitrogen fertilizer. Water management was required due to the sandy loam texture in the 4-year-old-plantation area to protect water availability by the silt pit or cover crops, especially in the dry season. The plant height showed a positive correlation to the land suitability, although the plant height was far lower than in commercial cultivation. The yield production also confirmed a rapid increase after castration in 2019 for 4, 5 and 7-year-old-plantation areas. The findings are useful for considering potential plant species of choice in the ex-coal area.
Buruan Sae in the city of Bandung: Realizing ideas from urban society
Authors: Margareth  , Abdullah O S , Cahyandito M F , Safitri K I 
Published: December 2021

Abstract
Buruan Sae is part of an integrated urban farming program implemented in the city of Bandung. The program relates to various urban farming products, which are mainly to meet their own food needs, and some are sold to the local markets. One of the targeted products is lime, but its cultivation is not yet well described. This study aimed to determine activities in cultivating lime in Buruan Sae. The study used a qualitative method, and the data were collected from 61 locations in Bandung city through observation, interviews, and literature review. In general, the results of this study showed that Buruan Sae includes the cultivation of vegetables, livestock or fish, fruit trees, family medicinal plants, processed urban farming products, seedling processes, and composting processes. An example for fruit trees is lime cultivation described in this paper, including land preparation, seed preparation, planting, maintenance, harvesting, and post-harvest. One site, namely Buruan Sae Jasmine, was found to be good learning for showing improvement in cultivation.
Environmental origin classification of coffee beans using infrared spectroscopy
Authors: Yusmanizar  , Munawar A A 
Published: December 2021

Abstract
Coffee is one of tropical agricultural products cultivated in many counties and consumed by people worldwide. The main purpose of this study is to employ the infrared spectroscopy technique to rapidly classify the environmental origins of green coffee bean samples. To achieve this purpose, diffuse reflectance spectral data of coffee samples were collected and acquired in wavelength rang of 1000 – 2500 nm. Classification models were established using principal component analysis (PCA) combined with linear discriminant analysis (LDA). The result showed that coffee bean sample can be classified based on their environmental origins with maximum total explained variance of the first two principal components is 97% (PC1 87% and PC2 10% respectively). Judging from the confusion matrix of the LDA, the classification accuracy reach 92%. It may conclude that infrared spectroscopy approach can be used to rapidly classify and sort coffee beans based on their geographical and environmental origins.
Soil bioengineering for sustainable coffee farming in Way Besai sub-watersheds, Lampung, Indonesia
Authors: Kuswadi D , Fitriani  
Published: December 2021

Abstract
Soil bioengineering is part of vegetative land conservation activities, including covering all use of plants to maintain the carrying capacity of the land. The sustainability of coffee farming achievement in the upstream watershed area is closely related to the application of soil bioengineering technology. This study conducted to identify the recent studies of soil bioengineering technology and its application in coffee farming toward increasing the land productivity in the upstream watershed. The research location is a smallholder coffee plantation upstream of the Way Besay sub-watershed, spread over 3 sub-districts, Air Hitam, Way Tenong, and Sumber Jaya sub-District, West Lampung, Lampung, Indonesia. Coffee farmers as many as 167 people as respondents. The data analysis method used exploration of the applicability of soil bioengineering technology at the micro-level. The mapping of the role of soil bioengineering trace using the VosViewer tool. The results of the analysis show that the readiness level application of soil bioengineering technology in coffee farming includes the production and use of organic fertilizers made from local materials, the use of mulch as soil cover, agroforestry with a variety of tall canopy plants/MPTS, the planting of multiple cropping (planting various yielding crops), and plant diversification with alley planting. Soil bioengineering technology has a very high potential to increase land productivity to support sustainable coffee production in the upstream area of the Lampung watershed.
Information gaps between irrigation establishment and farmer set-up
Authors: Arif S S , Susanto S , Sutiarso L , Jayanti D S 
Published: December 2021

Abstract
The level of a person’s cognitive processing ability is different, which influences how to understand and utilize the knowledge and information obtained from the media. Organizations can assess their knowledge resources and capabilities by conceptually designing strategies to minimize the knowledge gaps, improve performance, and produce various innovations by identifying the knowledge possessed, targets to be achieved, training and collaboration, research, and surveys for knowledge development, etc. The widening of knowledge gaps related to information development, individual attitudes, and behavior that knowledge transfer is needed to minimize the gap. This study aims to identify knowledge gaps between farmer institutions and irrigation bureaucracies. The method used is knowledge gap (K-Gap) analysis by measuring the level of importance of knowledge required against the available resources by scaling the questionnaire Likert Scale. The K-Gap analysis of the knowledge needed and currently available can evaluate performance in the planning and evaluation stages and become one of the decision-making systems in the management of an organization’s internal management, to increase motivation and represent the expectations of all users. The K-Gap value is obtained to indicate the direction of improvement that must be carried out.
Performance test of greenhouse effect (GHE) vent dryer with the addition of paraffin as a heat storage medium
Authors: Mustaqimah  , Ahmar A , Nurba D 
Published: December 2021

Abstract
Green House Effect (GHE) vent dryer is a kind of dryer design by utilizing solar energy as a drying energy source. Adding paraffin as a heat storage medium is one solution so that the GHE vent dryer can operate when the solar energy has dimmed. The purpose of this study was to test the performance of heat storage media using paraffin as a heat storage medium. 9 kg of paraffin was prepared, put into 9 copper pipes and placed in the absorber chamber. The data measured were the temperature in the drying room (T1=room 1, T2=room 2 and T3=room 3), the temperature of the absorber room, the temperature of the outlet, ambient temperature, air velocity and solar radiation. The results showed that the average ambient temperature ranged from 30°C to 40°C. Meanwhile, the average temperature in the GHE vent dryer ranges from 69°C to 71°C. The drying air flow velocity in the environment reaches 1.3 m/s and on the ventilator 1.1 m/s. During the study, data on solar radiation was also obtained on average reaching 6.6 W.h/m2. The final conclusion of this study shows that the use of paraffin as a heat storage medium in the GHE vent dryer is able to maintain the temperature in the drying chamber for 4 to 5 hours when solar radiation is not present.