bluuebunny/crossref_metadata_2025 huggingface dataset:
Experimental Study on Chloride Ion Removal in High-Salt Wastewater System
Authors: Lu Jie , Ma Mengdie , Li Dengxin , Xu Shihong
Published: June 2020

Chlorine is usually present in the environment in an ionic state, is highly mobile and difficult to degrade. High-chlorine wastewater can corrode buildings and affect the growth of animals and plants. Therefore, how to solve the environmental problem of high concentration of chloride ions well and effectively has drawn the intensive attention of the society. In this paper, chloride ion is removed from wastewater with the method of coprous chloride precipitation, and investigation is made on the effects of pH, temperature, amount of precipitant, titration time and reaction time on the removal efficiency of chloride ions. The results show that: when nCuSO4:nNa2SO3:nNaCl: n(ascorbic acid) =1.3:1.1:1: 0.01, and reaction pH is 3, temperature is 80 °C, titration time of sodium sulfite is 20min, reaction time after titration is 30min, the chloride ion has the optimal removal efficiency. SEM method is used for the characterization of the precipitates formed by the reaction. The results show that the experimentally produced complex cuprous chloride is irregular polyhedron with uneven particle size.
The Impact of Regional Power Trade on CO2Emissions in the Greater Mekong Sub-region
Authors: Chen Qinggui , Wang Bangcan , Ding Wenjiao , Liao Zhengkan , Zhang Hong , Zhao Guixin
Published: June 2020

The Greater Mekong Sub-region (GMS) is a natural economic area bound together by the Mekong River, and the GMS member countries includes Cambodia, the People’s Republic of China (PRC, Yunnan Province and Guangxi Zhuang Autonomous Region), Lao People’s Democratic Republic (Lao PDR), Myanmar, Thailand, and Viet Nam. In recent years, with the economic growth of the Greater Mekong Sub-region countries, the demand for electricity has been growing rapidly, and that might lead larger CO2emissions. Fortunately, there are abundant hydroelectric power resources in this region, and huge potential for complementarity in the supply and demand of electricity among countries. In this paper, an economic optimal dispatching model for thermal and hydroelectric generating units is introduced, and the effects of interconnections and cross-border power trade on the CO2emissions in the Greater Mekong Sub-region are investigated. Finally, through a concrete example, it can be proved that after the implementation of interconnection and cross-border electricity trade in the Greater Mekong Sub-region, the CO2emissions will be greatly reduced.
Evaluation of Physical Function and Air Pollution Tolerance of Roadside Tree in Bogor Botanical Garden’s Surrounding
Authors: Febrianti A M , Sulistyantara B
Published: June 2020

Air pollution causes decrease life quality ini urban areas. One solution in reducing air pollution is to use vegetation. The roadside Green Line consists of several types of vegetation, one of the trees. The ecological functions of the tree include pollution absorber. Roadside tree have specific physical appearance to determine its function. Roadside trees as living character that grow in polluted areas have different tolerance levels, one way of measuring tolerance based on biochemical parameters is the Air Pollution Tolerance Index (APTI). APTI can be a performance consideration of a tree type in a habitat of growth. The purpose of this research are to evaluating the physical function of roadside tree, to analyzing APTI. Based on the result of the study, the suitable (very suitable and suitable) physical function of roadside tree for absorbing gas air pollution was 62.78% and for adsorbing particle air pollution was 80,5% of total population of tree around Bogor Botanical Garden. Findings revealed that among 10 plant species are intermediate tolerant to air pollution and 11 plant species are sensitive to air pollution.
Design of Muster Area as Earthquake Evacuation Area in North Lombok Regency, West Nusa Tenggara
Authors: Amni B D H , Hadi A A , Perdinan
Published: June 2020

Mitigation of disaster is an effort to decrease the impact of damage caused by natural disasters i.e. earthquakes. West Nusa Tenggara Barat Province (NTB) Indonesia was hit by 7.0 earthquakes in July 2018. Earthquake disaster affects the community to become a traumatic feeling and disease because of the lack of supporting facilities in the mitigation area. The local government of Lombok is preparing reconstruction and rehabilitation including mitigation area. The Green open spaces of the city can be utilized as an evacuation area or muster area in the incident of a natural disaster. Muster areas as disaster mitigation are still rarely found in Indonesia, particularly in North Lombok Regency. The muster area should be placed on the area of potentially occurring natural disasters in the Regency. Infrastructure and network utilities of muster areas must have several sectors, such as the provision of drinking water, electricity, telecommunications panel, accessibility, drainage, sewer system, parking area, and a toilet. However, green open space in North Lombok Regency, particularly in natural disaster-prone areas, is not yet utilized as a muster area. The muster area was designed according to people’s needs. The questionnaire method was used to obtain input from North Lombok People who experienced the disaster.
Study of Urban Farming Potency to Support City Landscape Quality in the District of South Bogor
Authors: Qoriyati  , Nurhayati
Published: June 2020

The rapid conversion of agricultural land into a built space has an impact on the quality of the city landscape. Urban farming is agricultural practice efforts in urban areas by using narrow land to produce food to fulfill the needs of urban agricultural products, while providing the benefits of landscape services especially in improving the quality of urban landscapes. This study aims to identify the potency of urban farming in the district of South Bogor to support landscape quality of Bogor city including ecological quality, aesthetic quality, and social quality of the community. From the research identified areas of agriculture covering 1.609,19 ha and agricultural activities in 49 farmer groups at district of South Bogor. In addition, a total of 164 plant were identified with a plant diversity index value of 2,774 classified as moderate. The results of the descriptive analysis of the landscape aesthetics at district of South Bogor show that urban farming and borrowing landscape from Mount Salak and Mount Gede Pangrango are able to present an attractive aesthetics of the city landscape. The results of the chi-square test showed that the respondent’s background in the form of profession and education had a significant influence on the social interaction of the community in the farmer group. Landscape management recommendations consist of a basic concept to maintain agricultural land and urban agricultural activities with 7 landscape management strategies that can be through development actions in macro by Bogor city government and micro through agricultural activities by farmer groups at district of South Bogor.
Identification of Tourist Attractions in Timpag Village
Authors: Krisnandika A A K , Yusiana L S
Published: June 2020

The development of tourist attraction is an alternative way to improve the income of the people who live in and surround a village. The development of tourist attraction in a village should be in harmony with its environment in order to have a positive impact. Timpag village is one of the villages in Tabanan district, Bali which is trying to become a tourist village. At present, the development of tourist attractions in the Timpag village is occur sporadically and has not been based on the potential of the village. There is no master plan or initial study related to the tourism potential of the Timpag village. Identification of attractions and tourist activities in this village is needed in each tourist attraction to facilitate planning and development of sustainable tourist attractions. The method to obtain data is deep interview with government staff and tourist attraction owner is used to get data, swot analysis is then used to process the data obtained. Timpag village has 3 tourist attraction that is being developed sporadically, namely Uma Urip, D’Bendungan View and Batur Holly Spring at Sambian Undagi Farm. Based on these results, the recommendations of the types of tourism developed are given to each tourist attraction, namely Uma Urip has the potential to be developed as natural tourism, D’Bendungan View could be promoting as recreational tourism, and Batur Holly Spring can be developed as cultural tourism.
A Comparison of Young Generation’s Perception Regarding Home Garden in Urban Area: Case Study of Indonesia and Japan
Authors: Mao Y , Imara I D , Natawiguna I M P D , Pratiwi P I , Oka T , Furuya K
Published: June 2020

Urbanization has had an impact on various aspects of urban living, including rapid population growth and a decrease in green spaces. These changes can affect the health and well-being of the community. Creating a home garden in an urban dwelling can promote a healthier lifestyle and support the sustainable development of the landscape. The United Nations has agreed upon the Sustainable Development Goals (SDGs), and there are three goals that correlate with urbanization and home gardens: Goal 11 (Sustainable Cities), Goal 2 (Zero Hunger), and Goal 3 (Good Health). Recently, the number of young people who are concerned about maintaining a healthy lifestyle has increased, and it is important to understand their perception of and preference for home gardens. The purposes of this paper are to publish the result of identify the landscape images that appeal to the young people, know the attributes influencing their perception, and formulate the differences between home gardens. In this study, questionnaires were distributed to 122 young people, 62 from Japan and 60 from Indonesia. They were asked to fill in their personal attributes, provide keywords, describe the garden, and draw a sketch of how they imagined their home garden should be. The Landscape Image Sketch Technique were used to analyze the results. The results show that there are two important points of focus: the plant and the garden. Indonesian data indicated that a majority of them are interested in big plants like trees, for shade and aesthetics. The sketches mostly show preferences for outdoor gardens such as back and front yards. The Japanese data indicates an interest in the usage of small plants for healing and sketches of small indoor gardens. The data also indicates that young people in both the countries have little interest in gardening. Therefore, to support sustainable landscape development and the three SDGs, it is important to promote the information about the benefits of home gardens to increase community’s awareness and interest.
Urban Park Design for Bird Diversity: Theory and Application in Landscape and Site Scales
Authors: Mardiastuti A
Published: June 2020

There has been a new approach of creating urban park not solely for plants, but also for birds. This paper provides recommendations for urban park as bird habitat based on ecological theories, i.e. theory of island biogeography, theory of succession, intermediate disturbance hypothesis (IDH), and competitive exclusion principles. Empirical data from previous field research and literature study were used to come up with recommendations. Urban areas still able to provide good habitat for birds, although its diversity is lower than in natural areas. In a landscape scale, to get a high diversity of bird, urban parks should be large, close to each other, preferably connected to each other, and compact in shape. As for successional stages, various mid-stages will promote bird richness, except for early and climax stages. This is also supported by IDH, which stated that mid-disturbance habitat will harbor a maximum bird number. As for planted species in site scales, various plants should be provided to diversify food for birds, including those that producing nectars, seeds/grain, and small-size fruits. Aquatic freshwater habitat (ponds, rivers, marshes) also will invite birds that feed on small fishes, macro-zoobenthos, and water-related insects. In Indonesia, anthropogenic disturbance might also reduce bird diversity.
Correlation Analysis of Biodiversity with Local Wisdom in Indigenous Villages and Non-Indigenous Villages in Bogor Regency
Authors: Azzahra F , Kaswanto R L
Published: June 2020

Biodiversity is an abundance of various types of landscape resources on the face of the earth. The sustainability of biodiversity in a landscape is inseparable from the role of humans living. Various cultures have knowledge, practices, wisdom, and other cultural representations in utilizing and preserving the landscape resources. Urug Village is one of the traditional Sundanese villages that still maintain its local wisdom. Preservation of biodiversity and environmental management in traditional villages are based on local wisdom. It can be used as a reference for landscape management to preserve biodiversity in their environment. Therefore, this study aimed to compare the level of biodiversity in indigenous villages and non-indigenous villages and to find out the correlation between biodiversity and local wisdom, and to formulate local wisdom-based biodiversity management plans. The results of the biodiversity index calculation indicate that the level of biodiversity in Urug Indigenous Village is higher with index value 1.96. Cipatat village has a lower index of 1.34. Both of these biodiversity indexes are in the medium category. But the results of the T-test show that these two indexes are significantly different. It can be validly concluded that the biodiversity index in Urug Indigenous Village is higher than in Cipatat Village. Logistic regression was carried out to determine the correlation of biodiversity index with local wisdom. The results of the logistic regression analysis showed that there was a positive relationship between the biodiversity index and local wisdom. The recommendations for biodiversity management were formulated through SWOT analysis. This analysis resulted in three main recommendations for biodiversity management strategies based on local wisdom.
Leaf Shedding Phenology of Ficus Glauca, Terminalia Catappa, and Cassia Fistula
Authors: Danniswari D , Nasrullah N , Sulistyantara B
Published: June 2020

Phenology is a study that explores periodic tree lifecycle events and how those events are influenced by seasonal climatic variation. This study aimed to observe the leaf-shedding period of three commonly found deciduous tree species in the tropics: Ficus glauca, Terminalia catappa, and Cassia fistula; and to analyze the climatic driving factors to trees’ phenological phases. A field survey was conducted to observe the samples, each species consisted of five trees. The survey was conducted weekly from September 2016 to February 2017 in Bogor City and Regency. It was found that F. glauca shed its leaves more than once a year. The canopy coverage reached its lowest in February (65.7% coverage). Leaf shedding process in T. catappa reached its peak in January (83.7% coverage), meanwhile, C. fistula’s shedding period is suspected to happen before September because its canopy coverage kept increasing during the survey (69.7%–95.1% coverage). The climatic factor that significantly affected F. glauca was the previous month’s rainfall. When the rainfall in the previous month decreases, the leaf shedding increases. T. catappa and C. fistula were significantly affected by day length. For T. catappa, when day length decreases, the leaf shedding increases. Meanwhile, for C. fistula, when day length increases, it is shedding its leaves. Leaf phenology of deciduous trees in a tropical climate was affected by different climatic factors depending on their species.
Characteristic Assessment and Cultural Landscape Conservation of Urug Indigenous Village
Authors: Sari D C , Munandar A
Published: June 2020

Urug Indigenous Village is a traditional Sundanese village that still adheres to its local customs and wisdom. However, along with the development that happen in Urug Indigenous Village, the character of cultural landscape is feared to change and will result in loss of identity. The purpose of this study is to analyze the cultural landscape characteristics, to analyze significance value of cultural landscape, to analyze stakeholder perceptions about knowledge of cultural landscape characteristic, conservation priorities, and element of mental map, and also to formulate recommendations for conservation plans of Urug Indigenous Village. The method used in this research is description, spatial, and scoring method. The result shows that Urug Indigenous Village has unique characteristics in land use and activities, patterns of spatial organization, response to the natural environment, cultural traditions, circulation networks, boundary democrations, vegetation, building and structures, clusters, archeological sites, and small-scale elements. Urug Indigenous Village divided into three, that is Urug Lebak, Tengah, and Tonggoh. This distribution is based on differences in height of location and the implementation of traditional ceremonies. Urug Lebak belongs to high significance value of cultural landscape, while Urug Tengah and Urug Tonggoh belong to medium significance value of cultural landscape. According to the perception of stakeholders, the landscape character that characterize Urug as an Indigenous Village is cultural tradition’s. The characteristics of cultural landscape that need higher conservation prioritized are land use and activities. The most imaginary aspects are Gedong Ageung, tradisional houses, the main road, and Cidurian River. The conservation concept is to protect Urug Indigenous Village by maintaining and improving the characteristics. The conservation zone divided into two, that is core zone (Urug Lebak) and buffer zone (Urug Tengah and Tonggoh) with different conservation strategies.
Microhydro with Tube: A Powerhouse Solution for Rural Elctricity
Authors: Purwanto  , Budiono  , Hermawan  , Sudarno
Published: June 2020

The rivers in Indonesia have great potential for Microhydro Power Plants that have not been maximized as one of the alternatives of eco-friendly energy sources. These potentials are spread throughout Indonesia with an approximate of total capacity up to nearly 550 MW, yet, only 4.7% of the existing potential has been utilized. The 2005-2025 national energy management blueprint suggests the amount of mini / microhydro energy resources is equivalent to 0.46 GW while the installed capacity was 0.216 GW.This research seeks to utilize water resources with micro-hydro power plants by applying 80 mm diameter cross flow turbines and 130 mm runner tubes as power houses. A micro-hydro power plant with a tube as a powerhouse can be built individually with low investment and easy operation, so that it can be owned by rural communities both personally and in groups. The required flowrate to run this system is considered small (12 L/s), and with a head of 3.5m, the electricity energy that can be produced is around 420 Watts. A modeling assessment was carried out to analyze the effectiveness of a cross flow turbine with a diameter of 80 mm and a length of 130 mm using a Microhydro Power Plant with a tube as an impermanent powerhouse. The number of blades varied from 16, 20, to 24 blades with a blade angle of 15° and 20°. During the modeling process, the design was modified simultaneously by varying the shape of the nozzle, changing the angle of the guide vane, and varying the number of runners. A simulation was done individually to get the best efficiency.
Wet Scrubber for Coal Combustion with The Use of Textile Wastewater Feeding
Authors: Huboyo HS , Sudarno  , Prassanty LN
Published: June 2020

Coal combustion emission contains the acidic gas SO2. Meanwhile, textile wastewater contains high alkaline. This study inspects the performance of scrubber from boiler using coal fuel with textile wastewater as feeding. The wastewater was collected from an equalization tank. We adopted SNI standard for emission measurements at the outlet. The reduction of acidic gas pollutants concentration was 31–78%, while the operating temperature was observed at 83–190 °C. This study ascertains that using textile wastewater as scrubber feeding has mutual benefits i.e. at wastewater treatment and air pollution control devices in situ.
The Effect of Mixing Rate on Struvite Recovery from The Fertilizer Industry
Authors: Warmadewanthi  , Rodlia A , Ikhlas N , Pandebesie E S , Bagastyo A Y , Herumurti W
Published: June 2020

Fertilizer wastewater contains a high concentration of ammonium and phosphate. One method of reducing the ammonium and phosphate contents is to recover them in the form of magnesium ammonium phosphate (MAP) or struvite (MgNH4PO4.6H2O). The objective of this experiment was to obtain the optimum mixing rate, pH, and molar ratio for struvite precipitation. A mixture of wastewater containing [Mg2+]:[NH4
+]:[PO4
3-] in molar ratios of 1:1:1, 1.5:1:1, and 2:1:1 was added to a 0.5-L beaker glass. Samples were then stirred under G.t values of 0.5 × 106, 106, and 1.5 × 106 for 60 minutes and left for 30 minutes for the sedimentation process. pH was set to 7.5, 8, and 8.5. Subsequently, the experimental results were compared with thermodynamic modelling using PHREEQC v3.0. The results showed that the optimum mixing rate was 158 rpm, which is equal to a G.t of 106; the optimum pH was 8.5 ± 0.2; and the optimum molar ratio of [Mg2+]:[NH4
+]:[PO4
3-] was 1:1:1. The removal percentage was 86.14% for ammonium and 98.98% for phosphate. Experimental results displayed a pattern similar to that predicted by the model. Additionally, the morphology of struvite shown by SEM-EDX and XRD analysis also demonstrated that struvite was formed in the precipitate.
Reduction of Organic Parameters in Apartment Wastewater using Sequencing Batch Reactor by adding Activated Carbon Powder
Authors: Sekarani F A , Hendrasarie N
Published: June 2020

A Sequencing Batch Reactor (SBR) was used to reduce the concentration of organic parameters, that consisted of Chemical Oxygen Demand (COD), Total Nitrogen (N Total) and Total Suspended Solid (TSS) in an apartment wastewater, because the SBR system had a high space efficiency and was low in cost. The apartment wastewater was especially from the effluents of water closets and kitchen. In this study, we applied the SBR method and added activated carbon powder to treat apartment wastewater which had previously gone through the first settling process. This SBR was operated with various hydraulic retention times (HRT) which were 12, 24 and 36 hours respectively, and aeration rates of 3.5 and 7 L/min. Dissolved Oxygen (DO) testing was carried out at each stage of SBR, which aimed to measure and maintain stability at each stage of SBR. The results of the study were the optimum HRT and aeration rate, which were 36 hours and 7 L/min respectively. FTIR test was carried out to determine the efficiency of activated carbon addition in this SBR process. It was found that Activated Carbon increased SBR performance as evidenced by the COD removal rate reaching 89.5% and Total N 94.54%.
Evaluation and Design of Wastewater Management at Indrasari Rengat Hospital for Upgrade Program from Class C to B
Authors: Putra F P , Masduqi A
Published: June 2020

Indrasari Rengat Hospital, a hospital owned by the Government of Indragiri Hulu Regency in Riau Province, Indonesia, was upgraded from type C hospital to type B in May 2018. This improvement program was followed by the addition of beds from 120 to 200. The production of wastewater in this hospital was around 57.6 m3/day, with a water demand of 500 L/bed per day. This study aims to evaluate wastewater treatment performance and provide recommendations on wastewater management. The research was conducted by case study method, design evaluation, and redesign of the existing wastewater treatment plant (WWTP). Evaluation results showed that the WWTP would still be able to accommodate an increase in wastewater discharge due to additional beds for type B hospital. The maximum number of beds, in order that the WWTP would still be able to hold the wastewater, would be 240 beds, which is equivalent to 115.2 m3/day of wastewater discharge. At this discharge, WWTP would fulfil design criteria for key parameters such as hydraulic loading rate, organic loading rate, and detention time.
Cost Overrun in Construction Projects in Indonesia
Authors: Susanti R , Nurdiana A
Published: June 2020

Cost overrun is one of the problems faced by most construction projects in Indonesia. The unexpected budget in cost overrun can raise many problems in the project. Hence, it is important for every stakeholder in the project to have a good understanding of the factors causing cost overrun to avoid or to minimize the risk of it in the project. The aims of this study are to identify factors causing cost overrun in a project and to analyze factors that most influence the occurrence of cost overrun in construction projects in Indonesia as perceived by the owner and contractor. This research used a questionnaire to collect data. 15 factors were identified in this research i.e. site availability delay; site conditions; social site conditions; change order; rework; subcontractor and/or vendor performance; approval/permit delay; inaccuracy in budgeting; scheduling and resource planning; materials price fluctuations; rules and regulations; owner additional requirements; inflation; delay in payment; weak cash flow and bad weather. From a total of the 15 factors identified, both parties agreed on rework as the most factor causing cost overrun in construction projects in Indonesia.
Development of super-hydrophobic and stain repellent fabric finish
Authors: Pallye R , Ghosh S
Published: June 2020

This study intended to develop a health and environmental friendly super-hydrophobic textile fabric using a specific Fluoro Silane (Fs) finish. A novel Fs finish was prepared and applied on an acrylic fabric using a pad-dry-cure method. The finished fabric was evaluated for the degree of hydrophobicity, durability and stain repellency. The finished fabric exhibited static water contact angle greater than 170° and received 90 AATCC (4 ISO) rating that is recognized as super-hydrophobicity and this property was maintained even after a 50,000 cycle abrasion test. FTIR analysis identified the characteristic peaks related Si-O-Si and C-F asymmetric stretching bands of the finish on the fabric indicating a robust attachment of the finish on the fabric. Finish fabric did not show any change in appearance or tactile characteristics of the fabric.
Use Case of Smart Textiles Bio-Sensors Development and Integration for the Automotive Industry
Authors: Decaens J , Vermeersch O , Lachapelle D , Forcier P
Published: June 2020

As smart clothing is reaching a commercial level of maturity, the technology beyond bio-monitoring is being explored for other fields such as the automotive industry. In this case, the textile sensors integrated into a seat must remain contactless to allow for layer of clothing, seat cover, and such. The use of conductive textile materials is a key in creating an electromagnetic field which allow for contactless sensing. The data gathered by the bio-sensors can be used as prevention tool for detecting driver’s over-tiredness and stress or to monitor discomfort among passengers.
Design and development of a piezo-resistive sensor based on PEDOT: PSS applied to Sisal’s natural fiber for monitoring of 3D warp Interlock fabric
Authors: Abed A , Cochrane C , Boussu F , Cherkaoui O , Elmoznine R
Published: June 2020

The aim of the current study is to develop and optimize a flexible sensor based on a natural sisal fiber. Based on this sensor yarn, different fibrous reinforcements of 3D warp interlock fabrics used in composite materials could be monitored. This natural yarn (Sisal) has been pre-coated with a layer of PVA solution which makes it possible to homogenize the surface of the yarn and serves as a substrate for the coating phase. A copper metal wire was used as a connecting device to the measurement acquisition system. Some Conductive Polymers Composite (CPC) based on PEDOT: PSS are compared and used as a coating layer in order to get the conductive appearance of the sensor yarn. A sensor calibration step was carried out which consists in testing the sensor yarn on a MTS traction bench while measuring their resistance variation simultaneously. The electromechanical behavior of the different types of sensors will be compared and discussed. Insertion of these developed sensors within 3D woven structures will be helpful for local monitoring and check the inner local elongation of the 3D warp interlock fabric during tensile tests.
Ultrasound welding device for reinforcement of the invasive textile mesh destined to the reconstruction of the thoracic wall
Authors: Ene A G , Mihai C , Jipa C
Published: June 2020

The assimilation of synthetic macromolecular compounds in the interdisciplinary fields represented by the medicine and therapeutics, must address the complexity of the problems imposed by the application field, mainly resulting from the temporary or long-term contact of the polymeric materials with the tissues and biological substances. In this context, polymeric biomaterials are defined as polymers or polymeric composite types certified as biocompatible in contact with the biostructures. Comparing to conventional procedures, ultrasonic welding is a domain with a lower overall weight, but with exceptional development and dissemination perspectives in different industrial branches (automotive, electrotechnical, electronics, microelectronics, medical devices), which involves techniques of combining new materials, biocompatible, intelligent composites, with shape memory, etc. Through their geometric, technical, bio functional and biomedical characteristics, the implantable medical devices must meet the imposed requirements, mainly represented by: chemical inertia, resistance to infections, adequate ratio between flexibility and dimensional stability, adaptability to the defect geometry and high bursting resistance etc.
Fit evaluation of sportswear for Belgian elite male rowers in static and dynamic rowing postures
Authors: Vasile S , Cools J , De Raeve A , Malengier B , Deruyck F
Published: June 2020

The main objective of the SHAPE study was to assess the anthropometry of elite male rowers and develop customized size charts and sportswear with adequate fit in static and dynamic rowing postures. This paper briefly discusses the anthropometry of Belgian elite male rowers and focuses on the fit features of a related unisuit called SHAPE which is compared against a reference (SMARTFIT) with similar materials and design, whereof the garment construction is based on body charts of average Belgian males. Four elite male rowers evaluated both unisuits in garment size 52 and 58. Most of the ten fit features investigated for SHAPE unisuit were allocated average scores between 3 (adequate fit) and 4 (very good fit). In static posture, the overall fit of the SHAPE unisuit was found slightly better than of SMARTFIT unisuit (average score 3.8 and 3.1 respectively). Unlike SMARTFIT, SHAPE unisuit based on rowers body dimensions scored equally well in static and dynamic rowing postures catch and finish and will likely successfully accommodate repetitive sport movements.
A method to reduce the number of sizes in apparel industry
Authors: Hamad B , Thomassey S , Bruniaux P
Published: June 2020

The aim of this research is to define a methodology for reducing the number of garments sizes after building a sizing system for a given population. Thus, we introduce the process of development of sizing system in accordance with the literature. Despite the importance of developing appropriate sizing systems in the textile industry, there has been very little research focused on the task of reducing the huge number of sizes generated. The intention to keep the number of garment sizes to a minimum is to reduce confusion among customers, in addition to the logistics costs associated with maintaining a large number of sizes. Therefore, we propose a method to reduce the number of sizes by removing the sizes that cover fewer people. The challenge is to find the most convenient order of removal, how to maintain the linearity of the sizing system as well as to accommodate a larger number of people in the population.
Interactive Textile Vestimentary Systems for Wellbeing
Authors: Cărpuş Eftalea , Dorogan Angela , Doretty Cărpuş Ioana
Published: June 2020

In response to the changes, international research and innovation has as a priority, the development of a sustainable health system with tools to ensure both the personalization of the medical act and the implementation of prevention activities. The motivation for the use of textile elements, in this context, addresses functional, aesthetic, social, communicative, psychic and moral aspects. The balance between functionality, durability, economy, ergonomics and beauty in the case of textile systems, that change the quality of life and add value, is the result of modern design focused on meeting the requirements of use. The paper presents the results of an experimental study for the realization and testing under static conditions of textile structures used as a support for attachment sensors or electronic functions.
The color fastness properties of conductive leather improved by the use of mordants
Authors: Hylli M , Shabani A , Kazani I , Drushku S , Guxho G
Published: June 2020

Leather has limited uses in smart or advanced applications because it doesn’t conduct electricity. Applying double in situ–polymerization of pyrrole gives leather conductive properties. The treated leather changes its natural color into black color going through this double in–situ polymerization method and show very good conductivity. The problem we faced was the losing in color while using it in different applications. Therefore, in this research, we have concluded an increasement of the color fastness resistance of the black leather, which was demonstrated by the electro conductive measurements and good resistance to rubbing.
CALM scale – Assessment of the total comfort of the popular female jeans
Authors: Braga I , Abreu M J , Oliveira M
Published: June 2020

The present paper consists on the experimental stage of a PhD research, on the study of the popular female jeans comfort, referring to the process of subjective evaluation of comfort to wear, specifically the comfort objective evaluation of the jeans to wear, using CALM scale. The popular jeans in study, refers to the jeans created, produced and consumed by the poor classes of Fortaleza, in the state of Ceará, Brazil. The purpose is to investigate the female jeans, with the objective of collecting information about the comfort / discomfort perceptions of the consumers of the Fortaleza popular markets. When the collected responses were correlated, it was found that the perception of comfort/discomfort of the jeans is directly related to the touch sensation.
Needleless electrospinning of PAN/SBA-15 for the preparation of nanofibers membranes
Authors: Rafe M H , Delaite C , Lebeau B , Bonne M , Mohsenzadeh E , Adolphe D
Published: June 2020

Polyacrylonitrile is one of the few waterproof polymers that can be spun from relatively safe solvents, facilitating the use of PAN nanofibers membranes in medical, filtration and biological applications. In this study PAN nanofiber membranes containing SBA-15 nanoparticles were prepared by the process of electrospinning in needless electrospinning machine and DMSO was used as solvent. A small amount of dispersing agent BYK W-9010 was added for a better deagglomerating of SBA-15 nanoparticles in the PAN/DMSO solution. The influence of rod like SBA-15 type ordered mesoporous silica particles as filler on the morphology and textural parameters of electrospun PAN nanofibers was studied. The effect of concentration, applied voltage, distance and feed rate on nanofibers diameter was investigated. The results obtained demonstrated that by increasing the concentration, applied voltage and feed rate, the number of nanofibers was increased and thicker nanofibers were obtained. Viscosity increased by increasing the concentration of polymer and it increased further by imparting small amount of silica nanoparticles. The SEM images of nanofibers were taken and their morphology explains that presence of silica nanoparticles in the nanofibers increases the specific surface area and makes the surface rough.
Exponential success through integrated supply chain optimization, ecomotional intelligence and reputation-based leadership: Zara model
Authors: Berbiche N , Hlyal M , El Alami J
Published: June 2020

‘You need to have five fingers touching the factory and five touching the customer.’ Amancio ORTEGA, Inditex Chairman

Fast fashion figures among the most lucrative using industries of the modern economies. With $25 billion annual sales in 2018, Zara that pioneered fast-fashion art has achieved an outstanding rapid surge, conquering 96 markets worldwide. The proposed paper presents the results of a critical thinking on how Zara applied innovation and continuous improvement in its operations and strong business model to maintain its unique competitive advantage over time. Our study shows that the secrets behind its exponential success are mainly a sophisticated sustainable supply chain, integrating efficiently the layers of design, sourcing, manufacturing, and distribution to stores for customers. It has to do with the best trade-off between low storage and shorter time response to customers in a contracted volatile market. Concisely, this research on specialized studies done over recent years seeks to help professional leaders grasp the best managerial and relational practices, along with developed operations’ research tools based on demand forecasting, inventory-distribution and clearance pricing optimization models. It aims also at enriching their knowledge with some non-quantitative methods related to clients’ preferences, ‘glocal strategy’ for adaptation, and social responsibility. As such, in view of the frequent conjunctional use of economic intelligence and emotional intelligence by Zara, we coined the neologism ‘ecomotional intelligence’, as a guide to belief and action.
Research regarding electromagnetic shielding achieved by the fabrics support
Authors: Surdu L , Aileni R M , Radulescu R I , Chiriac L
Published: June 2020

Electromagnetic shielding achieved by flexible materials has gained an increased significance in today’s radiation polluted environment. One of the modern approaches for obtaining electromagnetic textile shields with good surface electrical conductivity is the deposition of metallic thin films onto the fabrics. The use of the magnetron sputtering technique ensures some advantages, e.g. improved reflections of the fabric once metallic coatings are deposited on both sides of the fabric, as well as lightweight and excellent flexibility due to nanoscale thickness of layers. In the present work, cotton and polyester fabrics with various structural parameters, such as yarns count, fabric density, and specific mass were used as samples to be coated. PVD magnetron sputtering technique was utilized for the deposition of metallic layers with various thicknesses, either on one side or on both sides of the fabrics, in order to ensure good conductivity of the fabric. Besides, fabric samples with inserted conductive yarns of silver and stainless steel were considered as substrates, as well. The electromagnetic shielding tests using TEM cell evidenced good shielding effectiveness of 10-34 dB within 0.1-1000 MHz.
Safety Evaluation of Microgrid Using Chaotic Time Series and RBF Neural Network
Authors: Qin He , Tang Wenbo
Published: June 2020

In order to evaluate safety of the Microgrid(MG) after distributed energy resources and different types of loads accessed in or disconnected, chaotic time series and RBF neural network are essential and beneficial tools. In this paper, Voltage Security Assessment Index(VSAI) is established to assess whether the MG is able to achieve equilibrium state for voltage. The application of Solar Photo Voltaic(SPV) or Wind Turbine(WT) generation alone is tested in the process of the phase space reconstruction and compared to the consorted hybrid example. Chaos algorithm can be used to define and optimal the RBF center and the connection weights of output layer, which can further improve the convergence speed of RBF neural network. Comparing the result of output between actual and prediction in three different conditions, if the difference of their values is above or below a certain threshold, the safety of MG will be judged unsafe. Test is conducted on an autonomous MG bus feeder to verify the usefulness of the posed system. The research conclusion shows that chaotic time series and RBF neural network is effective and feasible for the safety evaluation of MG.
A security Assessment of Distribution Network CPS Based on Association Matrix Modeling Analysis
Authors: Yang Zhou , Zhou Xia , Ni Ming , Li Manli , Lin Husheng
Published: June 2020

The addition of the information system has improved the operation of the distribution network CPS, but it also brings certain risks and impacts to the safety of the distribution network CPS operation. Therefore, the distribution network CPS security assessment needs to consider the impact of information systems. This paper proposes a security Assessment of Distribution Network CPS Based on Association Matrix Modeling Analysis. The research framework of information physical fault impact is proposed, and the correlation and impact of information physical failures are analyzed. The CPS model of distribution network based on association matrix is established, and the safety evaluation index and evaluation method are proposed. Case study shows the rationality and effectiveness of the proposed method.
Low frequency oscillation online identification based on synchronous phasor of distribution network
Authors: Yi Li , Fen Yan , Kun Wang , Chaohui Sun , Wenwei Zhang
Published: June 2020

With the advancement of the interconnection process of power grid, the low-frequency oscillation (LFO) problems in the interconnected power grid greatly affect the economic and stable operation of the system. In recent years, the research of synchronous measurement system of distribution network has made great progress, which makes it possible to construct a new generation of low-cost, flexible and reliable online monitoring system of low-frequency oscillation based on the synchronous phasor of distribution network (LFO-DPMU). Based on this, the physical structure and processing flow of LFO-DPMU are constructed in this paper. The LFO-DPMU can extracts dominant mode of oscillation from the distribution network information in real time. For the identification algorithm, this paper selects Prony and HHT algorithm, which two kinds of commonly used oscillation identification algorithms in high-voltage power grid, and compare the characteristics of algorithm in anti-noise, stability and analysis efficiency. Then, combined with the characteristics of distribution network signal, this paper analyses the applicability of the two algorithms. Finally, two algorithms are used to extract the oscillation mode of the measured synchronous phasor signal of distribution network. The analysis result shows the feasibility and accuracy of the whole identification system.
Calculating the winter base load and AC load in Chongqing considering the correlation of temperature and power system load
Authors: Wang Ruimiao , Liao Zheng , Li Chunyan , Hu Bo , Xie Kaigui , Niu Tao , Sun Qingsong , Wang Gang
Published: June 2020

The widely use of air conditioning (AC) equipment have brought a large amount of AC load to the power grid, which has an increasingly impact on the safe and economic operation of the power system. In order to correctly estimate the scale of AC load, this paper proposes a new winter AC load calculation method considering the correlation of temperature and load. Firstly, abnormal temperature days (ATD) are removed from the set of representative days (RD) by calculating the correlation coefficient of temperature and load in RD screening process. Secondly, taking into account the daily growth of the base load, the regression analysis is used to fit the base load curve for each day in winter. Then the spring festival (SF) coefficient is proposed to modify the system base load in SF because power system load decreases dramatically during SF. Finally, the winter AC load is equal to the difference between winter power system load and winter base load. The winter AC load in Chongqing 2018 is calculated using the pro-posed method and the result shows the effectiveness of this method.
Deadbeat Predictive Current Control with Disturbance Observer for Permanent Magnet Synchronous Motor
Authors: Chuntao Zhang , Ruina Dang , Yang Wang , Chengning Zhang , Shuo Zhang
Published: June 2020

Deadbeat predictive current control (DPCC) is a kind of motor control method with excellent dynamic response performance. To increase the parameter robustness of DPCC, a disturbance observer (DO) is designed based on the extended Kalman filter (EKF). Firstly, this paper derives the DPCC method based on the mathematical model of permanent magnet synchronous motor (PMSM). Then, the DO is designed based on the EKF. The voltage disturbances caused by parameters mismatch are selected as the state vector, and the voltage disturbances at each time are calculated by the EKF iteratively. Thus, a novel control algorithm combining DPCC with DO is proposed. The simulation results of DPCC method are compared with the results of DPCC+DO method to verify the effectiveness of the proposed method.
DFIG Model Suitable for SSR Research
Authors: Zhang Hanhua , Jin Haiqiang , Wang Tongtong , Wen Jun
Published: June 2020

The simulation model of doubly fed induction generator (DFIG) is the basis of the research on subsynchronous resonance (SSR) of DFIG. In this paper, the conditions that the model of DFIG is suitable for the research of subsynchronous oscillation (SSO) are analyzed firstly. Then, the drive system, doubly fed induction motor, AC / DC / AC power converter and control strategy of DFIG are modeled, and these models are unified as electromechanical model. At last, the validity of the model is verified by the example of SSR when the DFIG is sent out through series compensated transmission line.
Respiratory detection using non-contact sensors
Authors: Xinqiang Chen , Zhicheng Huang , Lumei Su
Published: June 2020

Current respiratory detection study are mainly based on contact respiratory detection technology which has the limitation that human body should wear corresponding detection instruments. This paper studies three types of non-contact respiratory detection technologies. (1) Kinect-based respiratory detection method, which uses the depth sensor to obtain the depth value of the chest and abdomen region; (2) Ordinary web camera-based respiratory detection method, which applies optical flow to detect the motion information of the chest and abdomen region; (3) Thermal imager based respiratory detection method, which obtains the temperature change information of the nostril region from thermal video. The advantages and disadvantages of these three non-contact respiratory detection technologies are explored according to the experimental results. Kinect-based respiratory detection method is less affected by environmental interference, but the detection accuracy is lower and the detection range is limited. The detection method based on ordinary web camera is more accurate. However, the environmental illumination requirements are high. The detection method based on the thermal imager is not affected by the ambient light source, but the detection has poor real-time performance.