bluuebunny/crossref_metadata_2025 huggingface dataset:
Investment Forecast of Power Network Infrastructure Project Based on BP Neural Network
Authors: Gao Yiquan , Cao Yang , Jiang Zhe
Published: November 2019

With the development of China’s economy and society, the demand for electric energy is gradually increasing, and large-scale investment in power grid infrastructure projects is being made. Due to the unreasonable investment plan, the investment balance rate of power grid enterprises in recent years is higher, which is not conducive to the scientific management of enterprises. Therefore, it is necessary to make investment prediction for power grid infrastructure projects in order to achieve the rational management and control of power grid enterprises for infrastructure projects. Based on BP neural network, this paper establishes the investment prediction model of power grid infrastructure projects, chooses the factors that have great influence on power grid infrastructure projects to analyse, and reduces the dimension of each factor based on principal component analysis method, which improves the accuracy and efficiency of the prediction. Finally, the effectiveness and advancement of the model are verified by an example of cable line project investment prediction of a power company. The results show that the prediction accuracy of the model is 93.1%, which can provide guidance for the reasonable formulation of the annual investment plan of power grid enterprises.
Study on Brazilian Splitting Mechanics and Acoustic Emission Characteristics of Impure Salt Rocks
Authors: Xu Deng , Liu Jianfeng , Liao Yilin , Zhang Qiangxing , Zhu Anqi
Published: November 2019

In order to study the mechanical and acoustic emission characteristics of salt rock under indirect tension, we conducted indirect tension cyclic loading and unloading tests and acoustic emission monitoring on pure salt rock and impure salt rock respectively by using MTS815 Flex Test GT rock mechanics test system and PCI-II acoustic emission (AE) three-dimensional positioning system. The results show that: (1) Both salt rocks show strong plastic deformation characteristics, but the plastic deformation ability of salt rocks is weakened by impurities, which is 79% of the average deformation ability of pure salt rocks. (2) The peak load and tensile strength of impure salt rock are higher than those of pure salt rock. The average peak value is 11.18KN and the average tensile strength is 1.81MPa, which are 1.55 times and 1.60 times of pure salt rock respectively. (3) The indirect tensile deformation characteristics of salt rock can be divided into three stages: damage stage at contact site, tensile deformation stage and post-peak deformation stage. (4) The acoustic emission signal is the most intense near the peak value, but the maximum ring counting rate and energy rate of impure salt rock are higher than those of pure salt rock. (5) When salt rock is destroyed, the whole crack surface is destroyed by tension, but the crack area of pure salt rock is much larger than that of impure salt rock.
PV Power Prediction Based on ABC-FCM Optimized SVM
Authors: Mo Han , Xian Zhaokun , Ruan Baoyang , Huang Guiding
Published: November 2019

The safe operation of photovoltaic (PV) grid-connected requires high accuracy of PV power prediction. Although support vector machine (SVM) has advantages in solving the non-linearity of prediction data, it has many problems, such as slow convergence, easy to fall into local optimal solution, dimension disaster, and the selection of penalty factor c and kernel function width σ, which have a deep impact on prediction accuracy. In this paper, the artificial bee colony(ABC) algorithm combined with fuzzy C-means clustering (FCM) algorithm is proposed to optimize SVM for PV power forecasting. FCM is used to calculate the value of the fuzzy membership degree to mark the normality of the samples to generate the fuzzy samples, Optimizing the selection process of SVM parameters using ABC algorithms. The fuzzy samples are input into SVM optimized by ABC algorithm for training, and finally used for PV power prediction. The experimental results show that the resolvable coefficient is close to 1, the root mean square error and relative error of the predicted results decrease, the prediction accuracy of ABC-FCM SVM has been improved, where can be seen through predicted curve and the optimization ability and fitting ability have also been enhanced. It can provide some scientific reference for the development of PV power prediction technology.
Design and analysis of the hand-held transplanter riding mechanism
Authors: Guang-Hua Lu , Ting-Bo Huang , Yan Liu , Rong-Shan Zhang , Xia Chen , Yao-Qi Shen
Published: November 2019

With the scale and mechanization of agricultural planting, rice transplanter is an important mechanical tool in the agricultural field. This design is based on the hand-held rice transplanter as the prototype, designing the riding mechanism of the rice transplanter, and carrying out finite element analysis and design. It achieved good results.
Study on Power Grid Emergency Optimization Control Based on Wind and Thermal Power Adjustable Capacity
Authors: Li Jun , Yang Peng Wei , Juan Yong Long , Lei Wen Tao , Lin Bo
Published: November 2019

In order to enhance the ability of thermal unit to participate in fault recovery under the large-scale wind power consumption and grid’s power loss, the power grid emergency optimization control method based on wind power and thermal power adjustable capacity is proposed. Based on the analysis of the influencing factors of wind power, considering the matching operating conditions of wind power output, the strategy of unit lockout control under grid over-frequency is proposed. According to the regional control error(ACE) of the power grid, one power emergency control method based on one-key climbing is constructed. The scheme can make full use of the thermal power unit load regulation space and short-term rapid adjustment rate to improve the grid’s ability to cope with large power loss and ensure grid frequency stability.
Coal mill fault diagnosis based on Gaussian process regression
Authors: Zhu Longfei , Liu Shuangbai , Zhang Deli , Qiu Xiaozhi , Zhou Weiqing
Published: November 2019

A typical operating set of equipment can be obtained through cluster analysis of historical data. Two state monitoring models for HP medium speed coal mill are established based on Gaussian process regression and the similarity index calculated by this model can be used for measuring the operating status of HP mills. Finally a method for fault diagnosis of HP mill based on Gaussian regression modelling is proposed combined with fault diagnosis knowledge base of this HP mill. Taking the HP medium speed mill of a 660MW thermal power unit as an example, the real operating data is collected and used for modelling and analysis. Results shows that the equipment parameter estimation calculated by Gaussian process regression is accurate. It can be used for early-warning and diagnosed of equipment fault and also for practical engineering application.
Research on Consumer Classification and Service Quality Satisfaction of Agricultural Products Based on RFM-SERVQUAL Model
Authors: Li Jinjing , Liu Yuming , Zhou Lin , Chen Jiaying
Published: November 2019

At present, the rapid development of e-commerce, effectively identifying the individualized needs of consumers and improving the service experience of consumers is a key factor for e-commerce companies to gain competitive advantage. This paper introduces the RFM model for the first time to study the field of agricultural products e-commerce, and provides new ideas for the consumer segmentation of agricultural products e-commerce platform. Based on the improved SERVQUAL evaluation method, the quality satisfaction of agricultural products online shopping service is studied to explore the agricultural products. Commercial consumers’ personalized service needs to provide practical development strategies.
Manufacturing of Herringbone Gear Model by 3D Printing Assisted Investment Casting
Authors: Ma Changliang , Zhang Yue , Zhang Huanyu , Wu Lin , Yang Li
Published: November 2019

3D printing technology and investment casting are used to manufacturing of a herringbone gear. Four kinds of gating system are designed and the numerical simulation of the four gating systems are executed. It is determined that the optimal casting mode of herringbone gears is the top casting system. Subsequently, the investment mold is made with PLA material by 3D printing technology and the mold shell is made of gypsum. Finally, experiment is performed to verify the validation of the top gating system. The results show that the combination of 3D printing technology and investment casting can effectively improve casting accuracy and production efficiency.
Sandy coast erosion under the conditions of a storm surge combined with a spring tide
Authors: Qian Shi , Aizhi Cai , Hongshuai Qi
Published: November 2019

By comparing the changes of beaches and features in the southeastern coast of Xiamen Island before and after Typhoon No. 9914, the beach cycle and coast erosion processes under the condition of superimposed the spring tide of storm surge were discussed. The study showed that during Typhoon No. 9914, the coastal water level rose to 4.04m above the main sea level (MSL). The storm surge elevation was 1.43m. The stormy waves with 22m/s onshore winds brought overwash onto Huandao Road, up to the main sea level of more than 8.5m, depositing about 8-10cm of beach sands on the road. It caused the beach berm to disappear completely. The sand prism lying in the high tidal zone was scoured. Part of the sand of the prism was washed upward away from the beach, part of which was brought to the low tide zone. The bare shoreface without sand prism was scoured directly by waves and currents. Although the sandy sediment which was brought to the deeper zone by the storm can come back to the shoreface, but the overwash sand could not be returned after the storm, and the prime failed to return to its original condition for a long time, eventually leading to beach erosion and coast retreat.
Effects of seafloor topography on underwater acoustic channel
Authors: Huang Hua , Jin Baogang , Rui Cheng , Liu Juan , Chen Jian
Published: November 2019

Sound wave is the main means of underwater communication at present. Focusing on effects of seafloor topography on underwater acoustic channel, some acoustic propagation models were compared and the BELLHOP method was chosen based on the experiment data of typical seafloor topography. Then the date of OFES model and SOM method were used to get the marine parameters of temperature, salinity, depth and sounding velocity along SS section near Diaoyu Island. At last, the acoustic propagations along the SS section in flat bottom and real seafloor topography were simulated using BELLHOP method. The comparison of acoustic propagation loss was presented. The results show that the BELLHOP method can be used to get authentic results of acoustic propagation under different seafloor topographies, and seafloor topography has a significient effect on acoustic propagation characteritics, which are also influenced by the depth of sound source and sound receiver.
The error analysis of an underwater acoustic short baseline array detection and location system
Authors: Qu Jia-sheng , Qu Yuan-xin , Yang Shan-shan
Published: November 2019

This paper briefly introduces the composition, working principle and the common installation method of the shipborne underwater acoustic short baseline array detection and positioning system. Based on the underwater acoustic direction measurement and location algorithm and the underwater acoustic short baseline array detection and positioning system, the error sources affecting the accuracy of the underwater acoustic direction and positioning are analysed in great detail, and the influence of each error source is quantitatively analysed. In this paper, through theoretical calculation and analysis, the influence factors and the influence degree of the error sources on the direction and location measurement are obtained, the technical indexes of direction measurement accuracy and positioning accuracy of the system are estimated. The results of the error analysis of short baseline array system in this paper provide a theoretical basis for the operation of related underwater acoustic location systems at sea, and has important guiding and practical significance for the underwater target detection and positioning system design.
Numerical simulation and analysis of the sink-stability for the deep-sea walking & swimming robot
Authors: Wei Wei , Wang Xinliang , Zhang Kang , Chen Hong
Published: November 2019

A brief introduction to the design concept of deep-sea walking & swimming robot is provided in this paper. And based on the computational fluid dynamics (CFD) method, a hydrodynamic numerical simulation model for the robot body is established. Then the flow field under different body inclination conditions and different ocean currents is numerically simulated by ANSYS Fluent, and the curves of resistance, lift and pitching moment with inclination are obtained. At the same time, the stability analysis method for deep-sea walking & swimming robot is established by combining dynamic stability margin method (DSM), and the stability of the walking & swimming robot is analysed. The stability of the tilting activity threshold is obtained under different inflow environments.
Exploitation and utilization of marine resources and protection of marine ecology
Authors: Zhong Huiping
Published: November 2019

With the development of society and the gradual enhancement of information science and technology, marine science and technology are gradually strengthened, the marine economy is playing an important part in our national economy. China’s marine Energy Resources Total accumulation is very rich, and it is a great wealth, but the development of marine resources is not unlimited. Although it can promote the development of national economy, the sustainable development of marine resources should be considered. As the marine science and technology are growing today, the sustainability of marine resources is also seriously threatened. This paper analyzes the problems that encountered in the exploitation and utilization of marine resources and also in the protection of marine ecology. After expounding the importance of sustainable development of marine resources, the writer puts forward some methods and suggestions on how to make marine resources develop sustainably.
Detection of phytopathogen and antagonistic fungi on the black diseased-cacao pod
Authors: Zulfitri A , Zulfiana D , Meisyara D , Guswenrivo I , Kartika T , Lestari A S
Published: November 2019

Isolation of phytopahtogen and antagonistic fungi is important in the efforts for managing phytopathogen infestation in cacao plantations. It is related to developing studies to evaluate the association between the two types of organism in the context of establishing integrated pest management to manage widespread pest and disease in cacao crop. This research objective is to study and isolate phytopathogens and antagonistic fungi on cacao. Fungal isolation was conducted from black diseased-cacao pod and soil samples through surface sterilization and serial dilution, respectively. After several culture purification, four fungal isolates were identified through macroscopic colonies and microscope observation. Those fungal isolates are Curvularia, Fusarium, Aspergillus and Trichoderma. Further research is necessary to test their antagonistic and or synergistic associations in laboratory and field scales.
Optimization of application of natural rubber based API adhesive for the production of laminated wood
Authors: Hermiati E , Fatriasari W , Risanto L , Darmawan T , Sari F P , Jayadi  , Sudarmanto  , Laksana R P B , Akbar F
Published: November 2019

The use of natural rubber latex (NRL) for wood adhesive has been identified since a long time ago, even though its adhesion quality is fair. Some modifications of the NRL, as well as the blending of NRL with other commercial wood adhesives, have already been reported. Another potential use of NRL in the wood adhesive formulation is a base polymer of isocyanate type adhesive, which is called aqueous polymer isocyanate (API) adhesive. This study aimed to optimize the aqueous polymer isocyanate (API) type adhesive made from natural rubber latex (NRL) using response surface methodology (RSM). Central composite design (CCD) was used for the RSM. Three factors have been optimized, namely the percentage of crosslinker (7.3-20.7% of the weight of base polymer), glue spread rate (112-298 g/m2), and pressing time (2-22 hours). Results of the study showed that the model generated from the optimization was fit and could be used to predict the relationship between the three factors and the bonding strength. Optimum conditions for the adhesive application for the production of laminated wood used 16.4% crosslinker, glue spread rate of 298 g/m2 with a pressing time of 6 hours. Using these conditions, the shear strength of the laminated wood obtained was 8.8 MPa.
The model of conversation in the ceremonial Marunjuk in Batak Toba: the study of pragmatics
Authors: Siahaan J , Purba A R
Published: November 2019

The research entitled “the model of conversation in the marunjuk ceremony in Batak Toba: the study of pragmatics,” reviews the marhusip, marpudun saut and marunjuk custom. The formulation of the problem in this research is a model of conversation discussed in the marunjuk ceremony in Batak Toba. And how does a conversation mean in the marunjuk ceremony in Batak Toba? The purpose of this research was to know the form of conversation following the language and meaning of the conversation in the custom model marunjuk in Batak Toba. The benefits of this research are to preserve the conversational model of marunjuk ceremony and add a reference as the study of national culture. The method used in this research is a qualitative descriptive method. Data were collected through an obsevation, interview, and literature study. Based on the explanation, this study is about marhusip (discussing the plan of an engagement of the couple) and marpudunsaut or marhata sinamot (negotiating the dowry money of the couple). The custom of marunjuk consists of two parts: 1) dialap jual (party on the woman’s side) and 2) ditaruhon jual (party on the man’s side).
Spatial modeling of conflict vulnerability of Sumatran elephants (Elephas maximus sumatranus) with humans in Besitang
Authors: Sulistiyono N , Iqbal M , Patana P , Purwoko A
Published: November 2019

High human activity around and in the forest is one of the causes of damage to Sumatran elephant (Elephas maximus sumatranus) habitat in the forest landscape of Besitang. Deforestation and degradation have caused forest fragmentation so that Sumatran elephant habitat becomes narrow. As a result, Sumatran elephants look for a new space outside their natural habitat such as agricultural land and plantations owned by communities around the forest. The conflict between Sumatran elephants and humans cannot be avoided. The objective of this study was to get information about the vulnerability distribution of Sumatran elephant conflict with humans based on the influenced factors in Besitang. The Principal Component Analysis (PCA) method was used to select and weight the factors that are thought to influence the distribution of Sumatran elephant conflict with humans. Overlay analysis of the factors that influence the conflicts distribution between Sumatran elephants and humans was done using Geographic Information System (GIS). The results of the study showed that the vulnerability of human-elephant conflict could be divided into three classes, namely the highly vulnerable areas of conflict which are 43,981.11 ha (26.99%), medium vulnerable areas which are 41,632.74 ha (25.56%) and not vulnerable areas which are 77,291.73 ha (47.45%). The results of the model validation test showed a value of 87.5%.
Estimation of forest degradation distribution using landsat sattelite imagery in Besitang forest landscape
Authors: Sulistiyono N , Nifrody T , Patana P , Susilowati A
Published: November 2019

Sumatra rain forest is a hot spot for flora and fauna biodiversity in the world and also habitat for many endangered species. Of the mammal species, four key species were found here those were Sumatran Tiger (Panthera tigris sumatrae), Sumatran Elephant (Elephas maximus sumatrensis), Orangutan (Pongo abelii) and Sumatran Rhino (Dicerorhinus sumatrensis). Forest degradation has been a global phenomenon and while being an important indicator to further forest loss, decreasing habitat quality of wild animal and species extinction. Besitang Forest is the habitats for three key mammal species in North Sumatra. Forest conversion, forest disturbance, and human activities in this site threaten the existence of this species. The objective of this research was to determine the spatial model of forest canopy cover and spatial distribution of forest degradation in Besitang Forest in period 2008 - 2016. Forest canopy cover value was estimated through Normalized Difference Vegetation Index (NDVI) value from satellite Landsat imagery using the regression model. Forest degradation was measured by comparing the spatial distribution of forest canopy cover in 2008 and forest canopy cover in 2016. The result showed that NDVI approaches could estimate the forest canopy cover with R2 value 79.0. Forest degradation in Besitang landscape was classified into high (527.85 ha), medium (9,763.83 ha) and low (28,898.73 ha).
The description and documentation of the Karonese semantics
Authors: Ginting R , Sembiring S
Published: November 2019

The research, recording, and documentation of Karonese Semantics are an attempt to re-identify the types of word meaning, meaning relation, meaning change and meaning of names in Karonese. The semantics of Karo language is a type of communication that reflects the cultural values of the region and is a part of the national culture. Therefore, research in Karonese semantics needs to be done in an attempt to recapture information as clear as possible about the types, relationships, and changes in the meaning and the meaning of names in Karonese. Semantics, which is a science of meanings of words, helps to answer it. To get research data in the form of descriptive qualitative, we applied an observation method with the technique of involvement and communication, a method of an interview with the recording and noting down technique, and a method of documentation with noting down technique. The results are presented in narrative form. The theory used in this research was the semantics theory with structural analysis.
Utilization of surface meteorological data, Himawari-8 satellite data, and radar data to analyze landspout in Sumenep, East Java, Indonesia (case study of 20 November 2017)
Authors: Yudistira R D , Mahubessy R , Krisnawan G D , Wisnawa G G , Tirtanegara I M K , Fadlan A , Wardoyo E
Published: November 2019

One of the extreme weather that happened in Indonesia is landspout. Landspout is virtually a tornado that forms from a thunderstorm that is not a supercell. On November 20, 2017 at 08.00 UTC there was a landspout in the village of Kertasada, Kalianget District, Sumenep Regency of Madura, East Java, Indonesia which caused damage to dozens of houses and many shops and warehouses. The study was done to determine the differences condition of the atmosphere before, during, and after the phenomenon based on synoptic analysis, atmospheric instability analysis, satellite image analysis, and radar image analysis. The results of the synoptic analysis of two weather parameters, pressure and temperature, also supported the occurrence of landspout phenomenon. Pressure and air temperature for two days before the occurrence of the landspout had a relatively similar pattern, but the average pressure appeared higher on the day of the incident. Temperature patterns showed a decrease from one hour before the incident, which was 3.2°C. The surface wind analysis showed wind speed during the day of the incident was higher than the previous two days, with a difference of 6 m s-1. The analysis of atmospheric instability when the incidence of the Lifted-Index (LI) values indicates the ‘unstable atmosphere and possible thunderstorm criteria. K-Index (KI) shows the possible to become moderate convetive’ The total index (TT) showed a stronger convective, local lightning potential and a value were higher than the previous two days. Severe Weather Threat Index (SWEAT) showed the potential of lightweight thunderstorm with greater instability value than the previous day while the Convective Avalilable Potential Energy (CAPE) index showed a large and potentially stormy energy. Then, in this research used Himawari-8 satellite and Radar C-band to detected convective clouds. According to Satellite Animation and Interactive Diagnosis (SATAID) satellite data, there is a Cumulonimbus (cb) cloud clump in the Sumenep region of Madura, which is meant to be potentially a landspout.
Moisture content, color quantification and starch content of oil palm trunk (Elaeis guineensis Jacq.)
Authors: Bahanawan A , Kusumah S S , Darmawan T , Ismadi  , Masruchin N , Sudarmanto  , Jayadi  , Pramasari D A , Triwibowo D , Kusumaningrum W B , Wibowo E S , Syamani F A , Krishanti N P R A , Lestari E , Amin Y , Sufiandi S , Syahrir A , Dwianto W
Published: November 2019

Research and utilization of oil palm trunk (Elaeis guineensisJacq.) have not been widely carried out. Knowledge the characteristics of oil palm trunk (OPT) as part of understanding this type for reference to further development. The aim of its study was (1) to determine the value of moisture content (MC) in fresh condition after cutting, (2) to quantify the color value (E), (3) to quantify the color change value (ΔE) in transverse and longitudinal cross-section and (4) to measure the percentage of starch content (SC). Results showed that MC for base (B), middle (M), up (U) and their average were 339.68%; 444.82%; 323.24% and 369.25% respectively. E value consisted of 4 parameters, namely FT (fresh-transversal), FL (fresh-longitudinal), OT (ovendry-transversal), and OL (ovendry-longitudinal). ΔE consisted of two parameters, namely ΔET (ΔE-transversal) and ΔEL (ΔE-longitudinal). Average E values for FT, FL, OT and OL were 87.61; 88.70; 78.01 and 79.34 respectively. Average values for ΔET and ΔEL were 10.73 and 9.33, respectively. SC was 0.047% from 1114 kg of oil palm trunk’s total weight.
Genetic diversity of Mindi (Melia Spp.) and its implications on the development of seed source for community forests
Authors: Rambey R , Susilowati A , Siregar I Z , Wijayanto N
Published: November 2019

Melia Spp. is known as fast-growing tree species and commonly cultivated in community forest and agriculture land due to its valuable wood. This species was widely distributed in some agroforestry systems, especially in Selaawi village, Garut, West Java. Based on the farmer information, two species mindi were found in this location; they were small and big seed mindi. The research aimed to get information on mindi diversity in Selaawi village and the opportunity for seed source development. For this purpose, microsatellites was used. Fourty leave samples were collected from parent tree owned by a farmer in Selaawi village. Three microsatellites markers (Ai_5, Ai_34 and Ai_48) developed for Azadirahta indica were used as transferability of PCR amplification. The result showed that genetic diversity value (He) of mindi in this location was high and ranged from 0,379 – 0,439. Big seed mindi has higher diversity than the small one. It indicates that this species is prospective to be developed as target species for the community forest. It is also potential to develop mindi in this location as seed source due to its high variability.
Anatomical observation and characterization on basic properties of Agarwood (Gaharu) as an Appendix II CITES
Authors: Dwianto W , Kusumah S S , Darmawan T , Amin Y , Bahanawan A , Pramasari D A , Lestari E , Himmi S K , Hermiati E , Fatriasari W , Laksana R P B , Damayanti R
Published: November 2019

High demand for Agarwood (Gaharu) from natural forest causes the decreasing of their population. In 2004, Indonesia proposed that all natural Agarwood from Gyrinops and Aquilaria generas should be included in the Appendix II CITES (Convention on International Trade in Endangered Species) list, which could be internationally traded but in certain quota. This paper deals with anatomical observation and characterization on basic properties to find out the difference between Gyrinops and Aquilaria for classification and standardization. Explorations have been conducted at community forests in Flores, East Nusa Tenggara for Gyrinops versteegii (Gilg) Domke; while A. malaccensis Benth., A. microcarpa Baill., A. beccariana Tiegh., and Aquilaria sp. were extracted from Sangau and Ketapang Regencies, West Kalimantan. Wood samples were taken by drilling the trees stem by using a Drill tool to get a pencil-shaped sample of about 20 cm in length and 0.5 cm in diameter. Another sample in form of chips contain bark and wood were also extracted. The results showed that the average specific gravity of Gyrinops and Aquilaria was between 0.31 – 0.35, therefore it was included in the Strength Class IV. Chemical components of injured G. versteegii contained 50.74% holocelullose, 30.50% α-cellulose, 31.98% lignin, and 16.69% extractives. The composition of ray cells in G. versteegii was more complex than Aquilaria generas.
Study on the existence and characteristics of Sonokeling (Dalbergia latifolia Roxb) as an Appendix II CITES Wood
Authors: Dwianto W , Bahanawan A , Kusumah S S , Darmawan T , Amin Y , Pramasari D A , Lestari E , Akbar F , Sudarmanto
Published: November 2019

Sonokeling (Dalbergia latifolia Roxb) stands are widely lost throughout the world. Sonokeling is currently classified as an Appendix II CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora) wood. Therefore, a study on the existence and characteristics of Sonokeling were expected to contribute in providing population data and basic properties of the wood. Exploration was conducted in Plot No. 25, KPH (Forest Management Unit) Gundih, Perum Perhutani Cepu, Central Java. Sonokeling stands have been planted since 1975 (more than 40 years-old) in an area of 54.20 ha, which was not productive for Teak and mixed with Mahogany. Sample was taken from upper part of stem with around 30 cm in diameter and 30 cm in length. The sample was further cutted into 2 x 2 x 2 cm for physical, 30 x 2 x 2 cm for Modulus of Elasticity (MOE) and Modulus of Rupture (MOR), and 4 x 2 x 2 cm for Compression Strength Parallel to the Grain (CSPG) tests. The results showed that specific gravity of sapwood dan heartwood were 0.79 and 0.82, respectively. The average values of MOE, MOR, and CSPG were 117,722, 1122.19, and 1022.93 kgf/cm2, respectively. Therefore, Sonokeling can be classified into Strength Class II.
Organic shallot cultivation by using siam weed compost combined with biocontrol agent of avirulent Fusarium Oxysporum F.Sp. cepae
Authors: Nugroho B , Mildaryani W , Dewi S H C
Published: November 2019

Increasing production cost of conventional shallot cultivation has promoted organic shallot production to develop by using natural resource potential such as siam weed that can found everywhere in Indonesia. This research was done to determine the best combination of siam weed compost and biocontrol agent of avirulent Fusarium oxysporum f. sp. cepae for organic shallot cultivation. Shallot was cultivated by applying various combination of siam weed compost and the biocontrol agent with inorganic fertilizer application of Mutiara 16-16-16 as the control. The combination were 20 ton/ha of siam weed compost combined with 36.8 kg/ha of the biocontrol agent, 20 ton/ha of siam weed compost combined with 73.6 kg/ha of the biocontrol agent, 10 ton/ha of siam weed compost combined with 36,8 kg/ha of the biocontrol agent, and 10 kg/ha siam weed compost combined with 73.6 kg of the biocontrol agent. The results showed that shallot cultivation using siam weed compost combined with the biocontrol agent gave better growth and increased the shallot yield by 26% compared to the use of inorganic fertilizer of Mutiara 16-16-16.
Proximate and Amino Acids Composition of Powdered Over Fermented Mlanding Tempeh
Authors: Ishartani D , Istiqomah N A , Nurisiwi A , Sari A M
Published: November 2019

Over fermented Mlanding tempeh is widely used by people in southern Java, Indonesia as main ingredient and seasoning due its umami taste. However, this kind of tempeh is very perishable. Alternatively, drying was conducted to prolong the shelf life of the over fermented Mlanding tempeh. This research aimed to investigate drying temperature effect on over fermented Mlanding tempeh powder proximate and amino acids composition. Mlanding tempeh was over fermented for 60 hours, dried at three different temperature (55, 60, 65°C), powdered and analyzed. The result shows drying temperature affect moisture content of the powder but not affect ash, lipid, total N, and dissolved protein content. Drying at 60 and 65°C produce powder with moisture content below 12%. The main amino acids in powdered over fermented Mlanding tempeh are glutamic and aspartic acid which are the highest in powder dried at 60°C.
The study of Apple flour formulation for functional cookies
Authors: Ishartati E , Sukardi S , Roeswitawati D , Zakia A , Ulfah U
Published: November 2019

The purpose of this study was to examine apple flour as a source of functional flour in various cookie formulas. Apple flour is applied as a substitute for flour in making cookies. The design used was a nested design [Nested Analisys], with two groups of apple varieties and three levels of formula adding apple flour which was nested in each variety, and repeated four times. Grouping is based on varieties, namely A = Anna and M = Manalagi, and the formula for adding apple flour to cookies is F0: 0%; F20: 20%, F25: 75%, and F30: 30%. In the formula of cookies, an analysis of chemical characteristics (water, ash, protein, fat, carbohydrates, dietary fiber, and antioxidants), physical characteristics and sensory characteristics is carried out. This study proves that apple flour can be substituted into formula cookies. In general, apple flour cookies have more brown color, distinctive flavor and aroma of apples, and lower crispness than cookies in general. The substitution level that produces the best quality and can be accepted by the panelists is 25% and 30% Manalagi apple flour. The use of higher flour levels has more fiber content, so it can reduce the crispness of cookies. Substitution of apple flour decreases protein and fat content, on the contrary, increases water content, ash content, dietary fiber content, carbohydrate levels and antioxidant activity of cookies. The most preferred product by panelists is the level of substitution of Manalagi apple flour 25% and 30%.
Methods for classically simulating noisy networked quantum architectures
Authors: Vankov Iskren , Mills Daniel , Wallden Petros , Kashefi Elham
Published: November 2019

As research on building scalable quantum computers advances, it is important to be able to certify their correctness. Due to the exponential hardness of classically simulating quantum computation, straight-forward verification through classical simulation fails. However, we can classically simulate small scale quantum computations and hence we are able to test that devices behave as expected in this domain. This constitutes the first step towards obtaining confidence in the anticipated quantum-advantage when we extend to scales that can no longer be simulated. Realistic devices have restrictions due to their architecture and limitations due to physical imperfections and noise. Here we extend the usual ideal simulations by considering those effects. We provide a general methodology for constructing realistic simulations emulating the physical system which will both provide a benchmark for realistic devices, and guide experimental research in the quest for quantum-advantage. We exemplify our methodology by simulating a networked architecture and corresponding noise-model; in particular that of the device developed in the Networked Quantum Information Technologies Hub (NQIT) (Networked Quantum Information Technologies Hub 2018 https://nqit.ox.ac.uk/; 2016 private communication. The error model was based on communication with Chris Balance and Tom Harty, mediated through Niel de Beaudrap, early on the NQIT project. Continued collaboration and communication with experimentalists could lead in refinement of the error model, which could be subject for future work.). For our simulations we use, with suitable modification, the classical simulator of Bravyi and Gosset 2016 (Phys. Rev. Lett.
116 250501). The specific problems considered belong to the class of instantaneous quantum polynomial-time (IQP) problems (Shepherd and Bremner 2009 Proc. R. Soc. A 465 141339), a class believed to be hard for classical computing devices, and to be a promising candidate for the first demonstration of quantum-advantage. We first consider a subclass of IQP, defined in Bermejo-Vega et al 2018 (Phys. Rev. X 8 021010), involving two-dimensional dynamical quantum simulators, before moving to more general instances of IQP, but which are still restricted to the architecture of NQIT.
Accounting for Blood Pressure Seasonality Alters Evaluation of Practice-Level Blood Pressure Control Intervention
Authors: Gepts Thomas , Nguyen Ann M , Cleland Charles , Wu Winfred , Pham-Singer Hang , Shelley Donna
Published: November 2019

BACKGROUND

Despite the large body of literature evaluating interventions to improve hypertension management, few studies have addressed seasonal variation in blood pressure (BP) control. This underreported phenomenon has implications for interpreting study findings and informing clinical care. We share a methodology that accounts for BP seasonality, presented through a case study—HealthyHearts NYC, an intervention aimed at increasing adherence to the Million Hearts BP control evidence-based guidelines in primary care practices.

METHODS

We used a randomized stepped-wedge design (n = 257 practices). Each intervention included 13 visits from practice facilitators trained in improving practice-level BP control over 12 months. Two models were used to assess the intervention effect—one that did not account for seasonality (model 1) and one that did (model 2). Model 2 was a re-specification of model 1 to include our proposed two fixed-effects terms to address BP seasonality.

RESULTS

Model 1 showed a significant negative association between the intervention and BP control (IRR = 0.98, 95% CI = 0.96–0.99, P ≤ 0.05). In contrast, Model 2, which did address seasonality, showed no intervention effect on BP control (IRR = 0.99, 95% CI = 0.97–1.01, P = 0.19).

CONCLUSIONS

These findings reveal that analyses that do not account for BP seasonality may not present an accurate picture of intervention effects. In our case study, accounting for BP seasonality turned a negative association into a null association. We recommend that when evaluating BP control, studies compare outcome measures across similar seasons and that the measurement period last long enough to account for seasonal effects.

CLINICAL TRIALS REGISTRATION

Trial registration number: NCT02646488.
Comparison of Measurement Methods for Dermal Exposure to Hazardous Chemicals at the Workplace: The SysDEA Project
Authors: Kasiotis Konstantinos M , Spaan Suzanne , Tsakirakis Angelos N , Franken Remy , Chartzala Ilianna , Anastasiadou Pelagia , Machera Kyriaki , Rother Dag , Roitzsch Michael , Poppek Ulrich , Lucadei Gianna , Baumgärtel Anja , Schlüter Urs , Gerritsen-Ebben Rianda M
Published: November 2019

There is a principal need for more precise methodology with regard to the determination of occupational dermal exposure. The goal of the Systematic analysis of Dermal Exposure to hazardous chemical Agents at the workplace project was therefore to generate scientific knowledge to improve and standardize measurement methods for dermal exposure to chemicals at the workplace. In addition, the comparability of different measurement methods was investigated. Different methods (body sampling by means of coveralls and patches, hand sampling by means of gloves and washing, and head sampling by means of headbands and wiping) were compared. Volunteers repeatedly performed a selection of tasks under standardized conditions in test chambers to increase the reproducibility and decrease variability. The selected tasks were pouring, rolling, spraying, and handling of objects immersed in liquid formulations, as well as dumping and handling objects contaminated with powder. For the chemical analysis, the surrogate test substance Tinopal SWN was analyzed by means of a high-performance liquid chromatographic method using a fluorescence detector. Tinopal SWN was either applied as a solid product in its pure form, or as a low and high viscosity liquid containing Tinopal SWN in dissolved form. To compare the sampling methods with patches and coveralls, the exposure values as measured on the patches were extrapolated to the surface areas of the respective parts of the coverall. Based on this extrapolation approach, using the patch method resulted in somewhat higher exposure values compared to using a coverall for all exposure situations, but the differences were only statistically significant in case of the liquid exposure situations. Using gloves resulted in significantly higher exposure values compared to hand wash for handling immersed objects, rolling, and handling contaminated objects, and slightly higher (not significant) exposure values during pouring and spraying. In the same context, applying wipe sampling resulted in higher exposure values than using a headband, which was at least partly due to extrapolation of the wipe results to the surface area of the headband. No ‘golden standard’ with regard to a preferred measurement method for dermal exposure could be identified from the methods as investigated in the current study.
Recognising Children’s Citizenship in the Social Care System
Authors: Cockburn Tom , Devine Dympna
Published: November 2019

Social work understanding of children’s citizenship has received little analysis and traditional models tend to view children as passive recipients of care or welfare, rather than as active meaning makers. This is particularly so for looked after children. In contrast, we draw upon the work of Pierre Bourdieu to develop a model of understanding children’s citizenship that on the one hand accounts for the structural flow of governance from modern welfare states that shape children’s lives, while recognising the agency and capacity for action among children. This article applies the model to those in the care system. To capture the everyday agency of children, we build upon Bourdieu’s notion of habitus with ideas of lived citizenship, as defined by Delanty and Lister, and recognition theory classically outlined by Honneth. Furthermore, we contribute to the existing work on habitus to develop a model adapted from the pragmatism associated with the work of Boltanski. In so doing, analysing the critical and justificatory account making of children themselves, social workers are able to engage positively with all children by drawing on a variety of their social worlds.
Between Majority and Minority: A Model for Understanding and Promoting Culturally Competent Policy Practice in Multicultural Societies
Authors: Nouman Hani
Published: November 2019

The engagement of social workers in policy-shaping processes reflects the commitment of the social work profession to promoting equality and social justice. Whilst in many countries engagement is a professional requirement, one cannot ignore the fact that it is essentially a political activity inextricably linked to the socio-political context in which it occurs. Cultural competence for engagement in shaping policy processes is necessary to promote effective engagement of social workers in policy practice in cross-cultural political situations. Notwithstanding the focus of the literature on cultural competence in the past decade, it centres mainly on the intercultural encounter between social workers and clients and on the therapeutic context, with emphasis on the practitioner belonging to the dominant Western culture whilst the client belongs to the less dominant ‘other’ in society. This article attempts to fill the gap by developing a theoretical culturally competent policy practice model to examine different dimensions of cultural competence required for the engagement of social workers from different ethnic groups in the policy arena. In addition, the article presents the significant implications of the model for policy, practice and research.
Early detection of rapid Barred Owl population growth within the range of the California Spotted Owl advises the Precautionary Principle
Authors: Wood Connor M , Gutiérrez R J , Keane John J , Peery M Zachariah
Published: November 2019

Biological invasions are most practical to manage when invasive species population densities are low. Despite a potentially narrow window of opportunity for efficient management, managers tend to delay intervention because the cost of prompt action is often high and resources are limited. The Barred Owl (Strix varia) invaded and colonized the entire range of the Northern Spotted Owl (S. occidentalis caurina), but insufficient population data contributed to delays in action until the Barred Owl posed an existential threat to the Spotted Owl. The leading edge of the Barred Owl expansion has since reached the Sierra Nevada, the core range of the California Spotted Owl (S. o. occidentalis). We conducted passive acoustic surveys within 400-ha grid cells across ~6,200 km2 in the northern Sierra Nevada and detected a 2.6-fold increase in Barred Owl site occupancy between 2017 and 2018, from 0.082 (85% confidence interval: 0.045–0.12) to 0.21 (0.14–0.28). The probability of Barred Owl site colonization increased with the amount of older forest, suggesting that Barred Owls are first occupying the preferred habitat of Spotted Owls. GPS-tagged Barred Owls (n = 10) generally displayed seasonal and interannual site fidelity over territories averaging 411 ha (range: 150–513 ha), suggesting that our occupancy estimates were not substantially upwardly biased by “double counting” individuals whose territories spanned multiple grid cells. Given the Barred Owl’s demonstrated threat to the Northern Spotted Owl, we believe our findings advise the Precautionary Principle, which posits that management actions such as invasive species removal should be taken despite uncertainties about, for example, true rates of population growth if the cost of inaction is high. In this case, initiating Barred Owl removals in the Sierra Nevada before the population grows further will likely make such action more cost-effective and more humane than if it is delayed. It could also prevent the extirpation of the California Spotted Owl from its core range.