bluuebunny/crossref_metadata_2025 huggingface dataset:
Hipotensión Permisiva en Trauma
Authors: Estrada Berrío Yamileth , Barco S´ánchez Alejandro , Ballén Ramírez Sthefanía , Salazar Bartolo Jeimmy Lorena , Ocampo Rincón John Jairo
Published: August 2021

Introducción: El shock hemorrágico es una de las causas más comunes de muerte en pacientes con trauma debido a que pone en marcha un círculo vicioso de mecanismos que incluyen hipotermia, acidosis y coagulopatía. Para mitigar estos efectos, se han propuesto estrategias de control de daños, incluido el aporte controlado de líquidos con hipotensión permisiva contemplando metas en la presión arterial sistólica para mantener una adecuada perfusión de los tejidos.

Objetivo: Conocer información actualizada acerca del manejo de la hipotensión permisiva en pacientes con trauma.

Metodología: Se buscó información en las bases de datos Web-of-Science y Scopus de  los últimos cinco años. El resultado arrojó un total de 118 artículos de los cuales se tomaron 30, según los criterios de inclusión y exclusión.

Resultados: Todos los artículos consideran el uso de la hipotensión permisiva como una buena opción para el manejo de los pacientes con trauma e hipotensión, sin embargo, difieren en qué momento es adecuado utilizarlo y en qué condiciones se debe realizar.

Conclusiones: Si bien la hipotensión permisiva se ha convertido en uno de los pilares fundamentales en el manejo prehospitalario del paciente con trauma, se requieren estudios investigativos en humanos para soportar cuándo y cómo debe utilizarse.
Psicodrama como terapia en trauma y estrés postraumático
Authors: Gutiérrez Segura Julio César , Ocampo Serna Sabina
Published: August 2021

Objetivo: Evaluar la evidencia disponible de  la eficacia del psicodrama como terapia para el manejo del trauma psicológico, trastorno por estrés agudo y postraumático.

Método: Se realizó una búsqueda sistemática de la literatura en MEDLINE, EMBASE, Cochrane Central, Scopus, LILACS y Ovid hasta abril de 2019. Se incluyeron los términos: (1)Psychodrama, (2)Role-playing, (3)Stress disorders, Acute, posttraumatic, y (4)Psychological trauma (MeSH). Se seleccionaron revisiones sistemáticas de la literatura, metaanálisis, ensayos clínicos aleatorios, cuasi aleatorios y estudios observacionales en inglés y español. Se seleccionaron los trabajos que incluyeran una  descripción de las   intervenciones con técnicas del psicodrama.

Resultados:  14 trabajos cumplieron criterios de inclusión.

Conclusión: No se encontró una asociación fuerte de la eficacia del psicodrama ante los síntomas de estrés postraumático. Se requieren más investigaciones con diseño metodológico ajustado para este tipo de intervenciones.
Enfermedad, eutanasia y aborto: una reflexión desde la bioética
Authors: Picón Jaimes Yelson Alejandro , Orozco Chinome Javier Esteban , Lozada Martínez Iván David , Moscote Salazar Luis Rafael
Published: August 2021

El objetivo de este manuscrito es reflexionar sobre la enfermedad, la eutanasia y el aborto desde la bioética, considerando las implicaciones legales en Colombia y la visión al respecto  de profesionales dedicados a las ciencias de la salud en diferentes lugares del mundo. Las enfermedades crónicas son causa importante de limitación funcional, sufrimiento y mortalidad; algunas patologías comprometen tanto el estado de conciencia en las personas que afectan la capacidad de decidir, por lo cual, es importante buscar alternativas para garantizar la autonomía de los pacientes. La eutanasia es aceptada solo en algunos países, pero cuenta con dificultades para el acceso, debido a trámites burocráticos o falta de reglamentación.  Finalmente, el aborto es un procedimiento  altamente cuestionado  por colectivos sociales y religiosos,  lo cual ha llevado a la estigmatización de las mujeres que desean acceder a él.
Climate change adaptation: the case of coastal communities in the Philippines
Authors: Peñalba Ericson , David Albert , Mabanta Michael , Samaniego Chaddlyn , Ellamil Sheryl
Published: August 2021

Climate change poses challenges and risks to coastal communities, and the
adaptation of local residents is a critically relevant issue that needs to
be addressed in the policymaking process. The main purpose of this paper is
to determine the perceptions and experiences of climate change among coastal
community residents in the Philippines. This study used a combination of
methods, such as participatory mapping exercises, focus group discussions,
key informant interviews, and document analyses. The data, which were
primarily collected from three coastal villages in the province of Bulacan,
were subjected to a thematic network analysis. The findings revealed four
dominant themes pertaining to climate change adaptation in a coastal
community setting: vulnerability conditions, risk awareness, risk
perceptions, and climate change awareness and perceptions. In particular, it
was found out that the communities were exposed to the threats of natural
hazards like flood and storm surge. Such exposure highlighted the residents'
concerns over the risks of hazards on their livelihoods and properties. The
residents also observed the unpredictability and the worsening effects of
climate change. With their direct experiences of the natural hazards'
impacts and awareness of the presence of risks, residents had undertaken
actions to build their adaptive capacity. This study then highlights the
value of integrating local knowledge into the mapping exercises, revealing
crucial information regarding vulnerabilities, risks, and adaptation
practices.
The importance of nature-based tourism for sustainable development - A report from the selected biosphere reserve
Authors: Trisic Igor , Stetic Snezana , Privitera Donatella
Published: August 2021

Special Nature Reserve (SNR) Gornje Podunavlje is located in the northwestern
part of Serbia, on the left bank of the Danube, along the border of Croatia
and Serbia. This area is a significant spatial unit for the development of
nature-based tourism and ecotourism. It is part of Backo Podunavlje
Biosphere Reserve, protected by UNESCO, and a wider area of Transboundary
Biosphere Reserve Mura-Drava- Danube, which includes 10 protected natural
areas in five countries. The research aims to examine the attitudes of the
local population about the state of sustainable tourism development in the
SNR Gornje Podunavlje using a questionnaire. A total of 205 respondents
expressed their satisfaction with the environmental, economic, and
socio-cultural aspects of sustainability. After quantitative analysis, the
results of the research can provide nature conservation guidelines and
specify the role of protected natural areas in sustainable tourism
development. As the most important dimensions of sustainability, the
residents highlighted the Socio-cultural and Institutional dimensions of
sustainable tourism development. Slightly lower values, according to the
attitudes of residents, were given to Environmental and Economic
sustainability. The results of the research indicate that this destination
can be important for the development of sustainable tourism. By adopting the
planned management measures, this protected natural area can be a
significant destination for ecotourism and other forms of nature-based
tourism.
The Natural Resource Governance Framework : improving governance for equitable and effective conservation
Authors: Springer J. , Campese J. , Nakangu B.
Published: August 2021

Governance is a critical determinant of the social equity, effectiveness and sustainability of natural resource use and conservation. Improving natural resource governance, including securing rights and sharing power and responsibilities, benefits both people and nature. Despite this, governance remains relatively poorly understood and weakly addressed in many natural resource and conservation contexts. The Natural Resource Governance Framework (NRGF) is an IUCN knowledge product created to provide a robust, inclusive and credible approach to assessing and improving natural resource governance at multiple levels and in diverse contexts. This publication presents the NRGF as it has been developed to date through a robust and inclusive process involving IUCN experts, Members and partners.
Paths to Narrow Identities
Authors: Carvalho Jean-Paul
Published: August 2021

As part of an article symposium on Partha Dasgupta and Sanjeev Goyal’s “Narrow Identities” (2019, Journal of Institutional and Theoretical Economics), Jean-Paul Carvalho reflects on the concept of narrow identity and the ways of modelling its emergence.
MODELING THE OPERATION OF SEPARATION CHAMBERS
Authors:   Saint Petersburg State University of Architecture and Civil Engineering, Saint Petersburg, Russia, Telyatnikova A. M. , Fedorov S. V. ,   Saint Petersburg State University of Architecture and Civil Engineering, Saint Petersburg, Russia, Kudryavtsev A. V. ,   Saint Petersburg State University of Architecture and Civil Engineering, Saint Petersburg, Russia
Published: August 2021

Introduction. Separation chambers are designed and built for separate and partially separate sewerage systems. Their main function is to separate the flow of relatively clean water during heavy rain. This allows the discharge of such water without treatment into water bodies or storage tanks. The approach reduces the load of wastewater treatment plants. To design separation chambers, we need to understand how their design features affect the process of flow separation. It is possible to study the hydraulic characteristics of separation chambers of any design with the help of computer simulation. Two designs of separation chambers were investigated: a circular spillway with a full-scale prototype and a spiral spillway proposed by the authors. Methods. The research was based on simulation in the ANSYS CFX finite element analysis software. For each design, a series of five experiments with different incoming flow rates was performed. Results. Models of two types of separation chambers were developed and qualitatively evaluated. The hydraulic characteristics were established and quantified: the uniformity of the flow discharged for treatment and the spillway discharge coefficient. Conclusion. As a result, a principled approach was formed and tested. Using this approach, it is possible to study the hydraulic characteristics of separation chambers of various designs for their further use in the sewerage system.
AMORPHOUS SILICA OBTAINED FROM NEPHELINE RAW MATERIALS IN THE DEPHOSPHORIZATION OF MUNICIPAL WASTEWATER
Authors:   Institute of North Industrial Ecology Problems, Subdivision of the Federal Research Center “Kola Science Center of the Russian Academy of Sciences”, Apatity, Murmansk Region, Russia, Fokina N. V. , Mayorov D. V. ,   Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Subdivision of the Federal Research Center “Kola Science Center of the Russian Academy of Sciences”, Apatity, Murmansk Region, Russia, Gorbacheva T. T. ,   Institute of North Industrial Ecology Problems, Subdivision of the Federal Research Center “Kola Science Center of the Russian Academy of Sciences”, Apatity, Murmansk Region, Russia
Published: August 2021

Introduction. The paper addresses the importance of extracting the labile form of phosphorus from wastewater with the possibility of its further use. The advantages of sorption methods and the prospects of using amorphous silica as an ameliorant with a prolonged fertilizing effect are considered. Methods. We performed experimental modeling of phosphates extraction from model solutions and a sludge mixture from regional sewage treatment plants. Amorphous silica obtained from local nepheline raw materials in acid treatment using a patented technology was used as sorbents. Results. A sorbent based on amorphous silica with a pore diameter of 8.41 nm was obtained. Its sorption capacity exceeds 29 mgP/g in the phosphate form, which corresponds to the average level of phosphorus removal, noted for a number of sorbents used in the international practice of wastewater dephosphorization when producing unconventional ameliorants. Conclusion. For effective phosphorus removal from municipal wastewater to obtain an unconventional ameliorant with a fertilizing effect in terms of Si and P, sorbent consumption of 1 g/l is sufficient.
METHODOLOGICAL APPROACHES FOR ASSESSING THE IMPACT OF NATURAL AND ANTHROPOGENIC FACTORS ON RIVER GEOSYSTEMS
Authors:   Research Institute of Agriculture of Crimea, Simferopol, Russia, Volkova N. E. , Podovalova S. V. ,   Research Institute of Agriculture of Crimea, Simferopol, Russia, Umerova L. R. ,   Research Institute of Agriculture of Crimea, Simferopol, Russia
Published: August 2021

Introduction. The increasing shortage of water resources in the Republic of Crimea, due to water supplies from the external water source being shut off, emphasized the need to rationally use the existing water resource potential, which in turn requires a balance between the water users’ interests and maintaining a favorable environmental situation in the peninsula’s watercourses. Although in Russian and global practice there is a whole range of approaches to assessing the impact of natural and anthropogenic factors on the state of river geosystems, not all of them are applicable to solving the indicated problem. Methods. By testing integrated techniques, methods and models for assessing the impact of human activity on the stability of river natural and engineering systems (using the Zuya River as an example), we selected the most appropriate approach to develop viable solutions in water management. Results. By comparing the possibilities of using the scoring index method to assess the stability and vulnerability of watercourses to changes in physical and geographical as well as hydrological parameters and water quality, and methodology for the integrated assessment of the geoecological state of water resources of small rivers and the system model “Minor River Basin”, we revealed that only with the use of the latter it is possible not only to assess the real situation but also identify the reasons that impede the rational use of the peninsula’s watercourses. Conclusion. When developing decisions related to water management in the Republic of Crimea, the use of a suitable methodological approach to assessing the impact of natural and anthropogenic factors on the stability of river geosystems will make it possible to avoid mistakes when choosing measures and prioritizing actions aimed at the rational use of the existing water resource potential.
SCALE AND LONG-TERM DYNAMICS OF OKA RIVER BASIN POLLUTION
Authors:   Water Problems Institute, Russian Academy of Sciences, Moscow, Russia, Dzhamalov R. G. , Vlasov K. G. ,   Water Problems Institute, Russian Academy of Sciences, Moscow, Russia, Grigorev V. Y. ,   Water Problems Institute, Russian Academy of Sciences, Moscow, Russia, Galagur K. G. ,   Water Problems Institute, Russian Academy of Sciences, Moscow, Russia, Reshetnyak O. S. ,   Institute of Earth Sciences, Southern Federal University, Rostov-on-Don, Russia, Safronova T. I. ,   Water Problems Institute, Russian Academy of Sciences, Moscow, Russia
Published: August 2021

Introduction. This article addresses the long-term dynamics of Oka River basin pollution. The basin serves as the main source of drinking water and a receiver of wastewater from a number of regions in European Russia. Methods. We assessed the water quality by 12 main hydrochemical indicators and constructed maps of their distribution with a breakdown into two periods (1990–1999 and 2000–2017). The anthropogenic load along the section in the city of Gorbatov was determined. Spearman’s rank correlation coefficients and their statistical significance were calculated. Results. For 18 gauging stations with 25 and more years of observations, the magnitude of the linear trend (%/year) was estimated using the Theil–Sen estimator, and the statistical significance of the linear trend (Mann–Kendall test) was assessed for individual stations and the entire basin, using a modified Walker test. The runoff of pollutants from the urban territory was estimated between the sections upstream and downstream the cities in the upper reaches of the Oka River basin. The volumes of pollutants in the Oka River from the cities of Orel, Belev and Kaluga were determined for the period of 1990–2017. The calculations of the pollutant runoff, performed between the sections upstream and downstream the cities, made it possible to determine the role of the cities in the formation of point pollution in the upper reaches of the Oka River. The anthropogenic load along the length of the river in terms of the influx of chemicals varies from “low” to “high”. The load is largely due to the intake of pollutants since water bodies and watercourses serve as receivers of both treated and insufficiently treated wastewater from various enterprises. Conclusion. Almost throughout the basin, the water quality is under stress. The statistical analysis showed the existing relationship between a certain type of land use and the concentration of substances in surface waters. It was revealed that the self-cleaning capacity of the river is sufficient to prevent pollutants from accumulating along it.
ECOLOGICAL STATE OF THE ZIMNYAYA ZOLOTITSA RIVER IN THE AREA OF THE INDIRECT IMPACT OF THE MINING AND PROCESSING PLANT
Authors:   Laverov Federal Center for Integrated Arctic Research of the Russian Academy of Sciences, Arkhangelsk, Russia, Klimovskiy N. V. , Moreva O. Y. ,   Laverov Federal Center for Integrated Arctic Research of the Russian Academy of Sciences, Arkhangelsk, Russia, Matveev N. Y. ,   Laverov Federal Center for Integrated Arctic Research of the Russian Academy of Sciences, Arkhangelsk, Russia, Novoselov A. P. ,   Laverov Federal Center for Integrated Arctic Research of the Russian Academy of Sciences, Arkhangelsk, Russia
Published: August 2021

Introduction. Medium rivers play an important role in the environment: draining the large catchment area, they determine the water content and quality as well as hydrological conditions in large watercourses. The joint effect of such factors as the small size of these rivers and human activity disturbs the balance of ecosystems, thus increasing the vulnerability of the rivers. Significant negative changes tend to occur faster and stronger in river valleys. Our aim was to study the ecological state of the Zimnyaya Zolotitsa River ecosystem in the area of the indirect impact of wastewater from the mining and processing plant in the Lomonosov diamond field. Methods. In the course of the study, we used the standard methods for determining the main biogenic elements and oil hydrocarbons. Results. The paper provides data on the content of biogenic elements in water, pH value, dissolved oxygen and mineralization, as well as the content of oil hydrocarbons in water and bottom sediments. Conclusion. As a result of the studies, it was found that in the summer observation period, the concentrations of phosphorus, nitrogen and silicon salts as well as oil hydrocarbons did not exceed the maximum allowable values for fishery reservoirs.
THE THOUGHTS ON THE DIFFERENCES IN THE CONTRACT LAW TRADITIONS IN THE COMMON LAW AND THE CIVIL LAW LEGAL SYSTEMS
Authors: USACHEVA K.A.
Published: August 2021

The extent to which the contract law traditions in the common law systems really differs from those in the civil law ones is discussed in the article. Today, the existence of such differences is difficult to reject, but their modern description looks more like rough cartoon sketches, which do not take into account lots of additional factors. The article proposes considering this matter more carefully.
Strategi Promosi Daya Tarik Wisata Kawasan Mandeh Kabupaten Pesisir Selatan
Authors: Fadel Muhammad , Manvi Kurnia Illahi
Published: August 2021

ABSTRAK

 

Penelitian dilatarbelakangi dengan adanya daya tarik wisata yang lagi maraknya dibicarakan yaitu daya tarik wisata Kawasan Mandeh Kabupaten Pesisir Selatan, jadi membutuhkan strategi promosi yang tepat untuk mempromosikan daya tarik wisata dengan indikator sebagai berikut yaitu: iklan, promosi penjualan, hubungan masyarakat, penjualan personal, dan pemasaran langsung. Intinya dalam penelitian ini yang mana terdapat beberapa masalah seperti masih kurangnya perhatian pihak pengelola untuk mempromosikan daya tarik wisata Kawasan Mandeh Kabupten Pesisir Selatan melalui media sosial, website, media cetak, dll. Masih sedikit diadakan acara sejenis event maupun festival padahal memiliki potensi yang besar apabila digunakan untuk sebuah acara, masih ada tempat-tempat bagus yang belum banyak terekspos ke publik, dan kurangnya perhatian pengelola untuk memperkenalkan makanan ciri khas Nagari Mandeh di daya tarik wisata padahal ini dapat menambah pendapatan bagi masyarakat setempat nantinya.

Tujuan penelitian adalah untuk menganalisis strategi promosi yang sudah ada dan mengevaluasi strategi promosi tersebut kearah yang lebih baik guna untuk kemajuan daya tarik wisata Kawasan Mandeh Kabupaten Pesisir Selatan kedepannya dan bertambahnya jumlah kunjungan wisatawan domsestik maupun mancanegara sesuai dengan semua potensi yang di miliki daya tarik wisata Kawasan Mandeh Kabupaten Pesisir Selatan. Penelitian menggunakan metode penelitian deskriptif dengan data kualitatif. Teknik pengumpulan data dilakukan dengan wawancara, observasi, dan dokumentasi, kemudian memakai teknik purposive sampling dengan informannya dua pegawai dinas pariwisata pemuda dan olahraga selaku pengelola, serta tiga orang pengunjung, dan dua orang masyarakat setempat. Teknik analisis penelitian ini terdiri dari reduksi data, penyajian data, dan pengambilan kesimpulan.

 

Kata Kunci : Strategi, Promosi, Daya Tarik Wisata
Pengaruh Service Quality Terhadap Kepuasan Tamu Menginap di UNP Hotel & Convention
Authors: Lusiyana Eva , Kasmita Kasmita
Published: August 2021

Penelitian ini diangkat dari pengamatan penulis mengenai service quality yang belum dijalankan dengan baik sehingga menemukan complain dari tamu. Penelitian ini memiliki tujuan  mengungkapkan seberapa besar pengaruh service quality terhadap kepuasan tamu. Jenis deskriptif kuantitatif dengan hubungan kausal merupakan jenis penelitian yang digunakan pada penelitian ini. Dalam penelitian ini terdiri dari dua variabel yaitu service quality sebagai variabel bebas dan kepuasan tamu sebagai variabel terikat. Tamu yang pernah menginap di UNP Hotel & Convention adalah populasi dalam penelitian ini dengan menggunakan teknik non probability sampling dengan jumlah sampel sebanyak 80 responden. Pengumpulan data penelitian menggunakan angket/kuisioner dengan 5 pilihan jawaban, yang telah diuji validitas dan reliabilitasnya. Pengujian hipotesis menggunakan analisis regresi linear. Hasil penelitian menunjukan bahwa service quality berpengaruh signifikan terhadap kepuasan tamu menginap di UNP Hotel & Convention dengan besaran kontribusi pengaruh 13,2%, dan koefisien regresi sebesar 0,426. Service quality pada katagori baik (66,25%), didapatkan nilai F 11.861, nilai t 3.437. Dengan saran lebih memperhatikan grooming karyawan, kebersihan fasilitas dan kehandalan dalam menghandle tamu.
BIODIVERSIDAD DE MERMÍTIDOS (NEMATODA, MERMITHIDAE) PARASITOIDES DE LARVAS DE DÍPTEROS ACUÁTICOS (SIMULIIDAE, CULICIDAE Y CHIRONOMIDAE) EN ARGENTINA
Authors: Camino Nora B. , E. González Sandra , R. Reboredo Guillermo
Published: August 2021

El presente estudio se basa en la diversidad específica de mermítidos parasitoides de larvas de dípteros acuáticos simúlidos, culícidos y quironómidos, y su prevalencia en las diferentes regiones de Argentina. Se proporciona una lista de nemátodos pertenecientes a la familia Mermithidae parasitoides de varias especies de simúlidos y quironómidos (Diptera: Simuliidae, Chironomidae) en arroyos de aguas claras, oxigenadas y de mucha corriente. Se identificaron en las larvas de jejenes 21 especies de mermítidos correspondientes a ocho géneros, de los cuales 1 (Ditremamermis Camino y Poinar, 1988) es propio de Argentina. La región neotropical constituye un área con alta diversidad de especies de nemátodos mermítidos de simúlidos, muchas de las cuales podrían ser consideradas agentes biorreguladores de esta plaga de interés sanitario. Los mermítidos se presentan en los quironómidos con tres especies y en los mosquitos con la especie Strelkovimermis spiculatus y una especie no identificada del género Hydromermis Corti, 1902.
Karakteristik biopelet tempurung kelapa dan serbuk kayu sebagai bahan bakar alternatif
Authors: Suyoko Muhammad , Ridhuan Kemas , Dharma Untung Surya
Published: August 2021

Biomass is a solid waste derived from biological material that can be generated as fuel. Biomass includes plantation, agriculture, household, forest waste and waste from the wood industry, one of the uses of biomass is bio-pellet. Bio-pellet is an alternative type of energy in the form of solid fuel made from biomass raw material with a size smaller than the size of briquettes. In this research, raw materials from teak wood, acacia, and sengon wood powder were used as well as a mixture of coconut shell charcoal with tapioca adhesive. This study aims to determine the bio-pellet estimation analysis, determine the heating value required by the bio pellet in the combustion process, and determine the burning characteristics of the three types of bio pellets. The method used in this study was the process of making bio-pellet with the same treatment on each bio-pellet, variations bio pellet will be made is 50% teak wood powder and 50% coconut shell charcoal powder, 50% acacia wood powder and 50% coconut shell charcoal powder, and 50% sengon wood powder and 50% coconut shell charcoal powder. Each bio pellet uses an adhesive mixture of 5% of the raw material. The stages of the testing process are bio pellet in laboratory tests to determine the value of the composition of the levels of heat, water, ash, flying substances, and bound carbon. The next testing process is the testing process of bio pellet combustion using a bio pellet stove with a process of boiling 10 liters of water, with fire temperature, water temperature, and the remaining fuel measured. All was done at UM Metro 2 campus. The results of bio pellet testing in the laboratory stated that the highest value was in sengon bio pellet with heating value of 5815.19 cal/g, water content of 5.82%, the ash content of 9.77%, levels of flying matter 69.37%, and carbon content bound 19, 41%. For the high heating value of bio pellet burning is 784.92 kcal/hour. Then the best efficiency is the sengon bio- pellet with a value of 55%.
Pengaruh diameter dan jumlah sudu turbin angin savonius tipe L terhadap unjuk kerja yang dihasilkan
Authors: Saputra Mohammad Rizqi , Kholis Nur , Rosadi Mohammad Munib
Published: August 2021

Abstract

Wind is a renewable mechanical energy source that can be used as an energy source because the energy from the wind can be used to drive wind turbines. Savonius wind turbine type L is a tool to convert wind energy into electricity with a simple construction and can work with low wind speeds. The purpose of this study was to determine the effect of differences in diameter and number of blades on the power produced. The method used is a simulation method with an artificial wind source. With a wind speed of 8 m/s. The data analysis technique used is 2-way ANOVA using the SPSS application. Variations used are 20 cm and 40 cm in diameter and the number of blades 2 and 4 . The result is a wind turbine with a variation of 40 cm and 4 blades capable of producing the best output which produces 350.98 RPM voltage of 11.64 volts current of 0.144 amperes and power of 1,676 watts. As for BHP, torque, and turbine efficiency with a variation of 40 cm and 4 blades capable of producing the best output where the generated BHP is 3.352 watts, torque 0.091 N / m efficiency 2.17. For the results of calculations with SPSS wind turbines with a diameter variation of 40 cm and 4 blades, the biggest power is 1,744 watts and for BHP produces 3.3520 watts and the efficiency reaches 2.17%.

Keyword : Diameter, number of blade, Performance

Abstrak

Angin adalah sumber energi mekanik yang bisa diperbaharui sehingga dapat dimanfaatkan sebagai sumber energi karena dapat digunakan untuk menggerakkan turbin angin. Turbin angin savonius tipe L merupakan alat untuk mengubah energi angin menjadi listrik dengan konstruksi yang sederhana dan dapat bekerja dengan kecepatan angin yang rendah. Tujuan penelitian ini untuk mengetahui pengaruh perbedaan diameter dan jumlah sudu terhadap unjuk kerja yang dihasilkan. Metode yang digunakan adalah metode simulasi dengan sumber angin buatan. Dengan kecepatan angin 8 m/s. Teknik analisis data yang digunakan adalah ANOVA 2 arah dengan menggunakan aplikasi SPSS. Variasi yang digunakan adalah diameter 20 cm dan 40 cm serta jumlah sudu 2 dan 4. Hasilnya turbin angin dengan variasi 40 cm dan 4 sudu mampu menghasilkan output terbaik yang dimana menghasilkan RPM 350,98 tegangan 11,64 volt arus 0,144 ampere dan daya 1,676 watt. Sedangkan untuk BHP, torsi, dan efisensi turbin dengan variasi 40 cm dan 4 sudu mampu menghasilkan output yang terbaik dimana BHP yang dihasilkan adalah 3,352 watt, torsi 0,091 N/m efisisensi 2,17. Untuk hasil perhitungan dengan SPSS turbin angin dengan variasi diameter 40 cm dan 4 sudu menghasilkan daya terbesar yakni 1,744 watt dan untuk BHP menghasilkan 3,3520 watt dan efisiensinya mencapai 2,17 % untuk torsi tertinggi dicapai turbin variasi 40 cm 2 sudu dengan torsi 0,116.

 

Kata kunci : diameter, jumlah sudu, unjuk kerja
Perancangan dan analisis electric car frame “Melumumet” menggunakan software Autodesk Inventor 2016
Authors: Amrulloh Munir , Nugroho Eko , Asroni Asroni
Published: August 2021

Frame atau rangka merupakan bagian penting dalam sebuah alat transportasi yang menyatukan semua komponen dan guna menahan beban yang bertumpu pada frame tersebut kesalahan  dalam  perancangan  pembebanan  akan  mengakibatkan  ketidak  nyamanan  saat frame akan diaplikasikan, dan juga akan mengurangi faktor keamanan, kenyamanan pengemudi dan penumpang saat digunakan, perancangan frame yang tepat akan memberikan hasil yang optimal antara tingkat keamanan dan kenyamanan, tujuan perancangan rangka kali ini untuk mengetahui displacement yang terjadi pada pada electric car frame menggunakan software autodesk inventor 2016, mengetahui tegangan minimal dan maximal yang terjadi pada electric car frame menggunakan software autodesk inventor 2016, mengetahui safety factor yang terjadi pada electric car frame menggunakan software autodesk inventor 2016 dengan menggunakan fitur frame analysis, maka dapat diketahui fenomena yang terjadi pada struktur frame mobil listrik yang telah dirancang sebelumnya. Penelitian ini dilakukan dengan beberapa  tahap  metode  pengerjaan  yaitu  :  pemodelan  frame  dengan  software  autodesk inventor 2016 dengan cara membuat desain 2D terlebih dahulu, lalu merubahnya kedalam 3D, setelah desain selesai masuklah ketahap simulasi, setelah melakukan simulasi dengan beban 230 kg, 280 kg, dan 330 kg terhadap frame didapat hasil berupa displacement 0,6677 mm, 0,7243 mm, dan 0,7809  mm, tegangan maximal 23,28 MPa,  25,2    MPa,    dan    27,12 MPa, tegangan minimal 0,04 MPa, 0,05 MPa, 0,06 MPa, dan angka keamanan yang diperoleh dari analisa tersebut adalah 10,3; 9,5; dan 8,8. Angka keamanan merupakan salah satu faktor utama apakah frame layak diguanakan atau tidak jika hasil yang didapat pada safety factor yaitu kurang dari 1 maka frame tersebut tidak aman saat akan digunakan.
Efek vortex generators terhadap peningkatan perpindahan panas pada aliran melewati heated tubes
Authors: Effendi Yafid , Rosyidin Ali
Published: August 2021

In this decade, improving the rate of heat transfer has become a big challenge. The high thermal resistance of the gas side of the heat exchanger has an impact on the low rate of heat transfer. Therefore, an experimental study was carried out aimed at looking at conditions of hot temperature and decreased air flow pressure through a heated tube in a rectangular channel using artificial surfaces, namely the concave delta winglet and delta winglet vortex generators. Concave delta winglet vortex generators (CDW VGs) are installed in-line and staggered with one, and two pairs are arranged in common-flow-down (CFD) in the direction of flow with an angle of attack of 15o. The experimental results show that the best thermal performance is observed in the use of two rows CDW VGs staggered, where the value of performance evaluation criteria (PEC) is 28.88% higher than the use of CDW VGs in-line, DW VGs staggered and DW VGs in-line at the same Reynolds number. At the same Reynolds number, the Nusselt number ratio and the friction factor ratio increased 45.25% and 152.05% respectively, occurring in two rows of CDW VGs staggered compared to other vortex generators.Keywords: vortex generators, heat transfer, Nusselt number, friction factor, PEC
Autonomous Parking Spot Detection System for Mobile Phones using Drones and Deep Learning
Authors: Tirado Guilleum Budia , Semwal Sudhanshu Kumar
Published: August 2021

Many parking lot facilities suffer from capacity over-loads and many times there are no monitoring tools toprovide feedback. As a consequence, the people, want-ing to park, become frustrated as there is considerablyloss of time. In this paper, we present a novel proto-type of an automatic parking-lot analysis platform us-ing image-based machine learning to (a) guide a droneautonomously; and (b) to process useful information tobe handled into a smartphone application to communi-cate with the parking lot users.We have collected a reasonable amount of test imagesto build a classification model using Convolutional neu-ronal networks (CNNs) to classify parking lot images,and build different object detection models to identifyfree and occupied parking spots. Those models havebeen exported to the back-end module of our platformso it can control the drone and record the computed in-formation to its database. In addition, we have imple-mented an iOS application that requests and displaysthe parking lot status and its empty spots.We have been able to prove that this prototype is fea-sible, functional, and opens a path towards future im-provements and refinements. The flight control and thedata classification algorithms have been shown to workusing the machine learning models. In summary, wefound a clear and and concise way to display useful in-formation in real time to our users.
Using Autonomous Drones Interactions towards Mobile Personal Spaces for Indoor Environments
Authors: Velazquez Eric Marin , Semwal Sudhanshu Kumar
Published: August 2021

We propose an extension of a recent work using convo-lutional neural networks and drones, such as Learning tofly by using DroNet [8] that can possibly safely drive adrone autonomously. The combination of (i) the DroNetarchitecture and weights to apply to CNNs to avoid thecrashes; (ii) combining it with DLIB tracker, a corre-lation implemented tracker based on Danelljan et al.’spaper [3] work; (iii) the extraction of descriptors usingSpeeded Up Robust Features [1]; and (iv) Fast Libraryfor Approximate Nearest Neighbors [10] for the featurematching – leads a drone to track any object and avoidcrashes autonomously without any prior informationabout the object. The main goal is to create a partnershipbetween the drone(s) and the participant as the dronefollows the participant and avoids collisions. Our workextends existing methods to also included a way for adrone to follow a person even if the person is hiddenfor a few frames. Our algorithms also work in low/poorambient light satisfactorily. In future, our technique canbe used to provide novel indoor applications for drones.
Efficient Immersive Video Compression using Screen Content Coding
Authors: Samelak Jarosław , Dziembowski Adrian , Mieloch Dawid , Domański Marek , Wawrzyniak Maciej
Published: August 2021

The paper deals with efficient compression of immersive video representations for the synthesis of video relatedto virtual viewports, i.e., to selected virtual viewer positions and selected virtual directions of watching. Thegoal is to obtain possibly high quality of virtual video obtained from compressed representations of immersivevideo acquired from multiple omnidirectional and planar (perspective) cameras, or from computer animation. Inthe paper, we describe a solution based on HEVC (High Efficiency Video Coding) compression and the recentlyproposed MPEG Test Model for Immersive Video. The idea is to use standard-compliant Screen Content Codingtools that were proposed for other applications and have never been used for immersive video compression. Theexperimental results with standard test video sequences are reported for the normalized experimental conditionsdefined by MPEG. In the paper, it is demonstrated that the proposed solution yields up to 20% of bitrate reductionfor the constant quality of virtual video.
Advanced Visual Interaction with Public Bicycle Sharing Systems
Authors: Cortez Alexandra , Vázquez Pere-Pau
Published: August 2021

Nowadays, public bicycle sharing systems have become popular and widespread across the world. Their usefulnesslargely depends on their ability to synchronize with citizens’ usage patterns and optimize re-balancing operationsthat must be carried out to reduce outages. Two crucial factors to tackle this problem are stations’ characteristics(geography, location, etc) and the availability of bikes and drop-off slots. Based on the requirements and input fromregular users and experts in policy-making, system operation, and urban planning, we have created a web-basedvisualization system that facilitates the analysis of docking stations’ behavior. This system provides the first groupwith the availability prediction of both bike and free slots in docking stations to assist their planning. Besides,the system helps the second group understand patterns of usage and get deeper insights (e.g. need for resizing orcomplementary transportation systems) to facilitate decision-making and better fulfill the citizens’ needs. In a finalevaluation, both groups found it highly useful, effective, and better suited than other existent applications.
Unsupervised SIFT features-to-Image Translation using CycleGAN
Authors: Maćkowiak Sławomir , Brudz Patryk , Ciesielsk Mikołaj , Wawrzyniak Maciej
Published: August 2021

The generation of video content from a small set of data representing the features of objects has very promising application prospects. This is particularly important in the context of the work of the MPEG Video Coding for Machine group, where various efforts are being undertaken related to efficient image coding for machines and humans. The representation of feature points well understood by machines in a video form, which is easy to understand by humans, is an important current challenge. This paper presents results on the ability to generate images from a set of SIFT feature points without descriptors using the generative adversarial network CycleGAN. The impact of the SIFT keypoint representation method on the learning quality of the network is presented. The results and a subjective evaluation of the generated images are presented.
Similarity and symmetry measures based on fuzzy descriptors of image objects’ composition
Authors: Iwanowski Marcin , Grzabka Marcin
Published: August 2021

The paper describes a method for measuring the similarity and symmetry of an image annotated with boundingboxes indicating image objects. The latter representation became popular recently due to the rapid development offast and efficient deep-learning-based object-detection methods. The proposed approach allows for comparing setsof bounding boxes to estimate the degree of similarity of their underlying images. It is based on the fuzzy approachthat uses the fuzzy mutual position (FMP) matrix to describe spatial composition and relations between boundingboxes within an image. A method of computing the similarity of two images described by their FMP matrices isproposed and the algorithm of its computation. It outputs the single scalar value describing the degree of content-based image similarity. By modifying the method’s parameters, instead of similarity, the reflectional symmetry ofobject composition may also be measured. The proposed approach allows for measuring differences in objects’composition of various intensities. It is also invariant to translation and scaling and – in case of symmetry detection– position and orientation of the symmetry axis. A couple of examples illustrate the method.
Multiple Object Tracking by Bounding Boxes Without Using Texture Information and Optical Flow
Authors: Lipovits Ágnes , Czúni László , Tömördi Katalin , Vörösházi Zsolt
Published: August 2021

Object tracking is a key task in many applications using video analytics. While there is a huge number of algo-rithms to track objects, there is still a need for new methods to solve the correspondence problem under certaincircumstances. In our article, we assume a very typical but still open scenario: a still image object detector hasalready identified the objects to be tracked; thus, we have object labels, confidence values, and bounding boxes ineach video frame captured at a low sampling rate. That is, optical flow methods difficult to be applied (also dueto bad lighting conditions, cluttered or homogeneous areas and strong ego-motion), and moreover, many objectslook similar (having the same category labels). Our proposed approach is based on the Hungarian method andincorporates the above information into the cost function evaluating the possible pairings of objects. To considerthe uncertainty of the detector, the elements of the confusion matrix also contribute to the cost of pairs, as wellas the probability of spatial translations based on prior observations. As a use case, we apply the algorithm to adata-set, where images were captured from onboard cameras and traffic signs were detected by RetinaNet. Weanalyze the performance with different parameter settings.
Comparison of Lossless Image Formats
Authors: Barina David
Published: August 2021

In recent years, a bag with image and video compression formats has been torn. However, most of them are focusedon lossy compression and only marginally support the lossless mode. In this paper, I will focus on lossless formatsand the critical question: "Which one is the most efficient?" It turned out that FLIF is currently the most efficientformat for lossless image compression. This finding is in contrast to that FLIF developers stopped its developmentin favor of JPEG XL.
An Analysis on Pixel Redundancy Structure in Equirectangular Images
Authors: Vazquez I. , Cutchin Steven
Published: August 2021

360◦photogrammetry captures the surrounding light from a central point. To process and transmit these types ofimages over the network to the end user, the most common approach is to project them onto a 2D image usingthe equirectangular projection to generate a 360◦image. However, this projection introduces redundancy into theimage, increasing storage and transmission requirements. To address this problem, the standard approach is touse compression algorithms, such as JPEG or PNG, but they do not take full advantage of the visual redundancyproduced by the equirectangular projection. In this study of the 360SP dataset (a collection of Google StreetView images), we analyze the redundancy in equirectangular images and show how it is structured across theimage. Outcomes from our study will support the developing of spherical compression algorithms, improvingthe immersive experience of Virtual Reality users by reducing loading times and increasing the perceptual imagequality.
A Mobile Augmented Reality Application For Simulating Claude Monet’s Impressionistic Art Style
Authors: Del Gallego Neil Patrick , Viaje Cedric Lance , Gerra-Clarin Michael Ryan , Roque John Marvic , Non Gary Steven , Martinez Jesin Jarod , Gana Jose Antonio
Published: August 2021

In this study, we showcase a mobileaugmented reality application where a user places various 3D models in atabletop scene. The scene is captured and then rendered as Claude Monet’s impressionistic art style. One possibleuse case for this application is to demonstrate the behavior of the impressionistic art style of Claude Monet, byapplying this to tabletop scenes, which can be useful especially for art students. This allows the user to create theirown "still life" composition and study how the scene is painted. Our proposed framework is composed of threesteps. The system first identifies the context of the tabletop scene, through GIST descriptors, which are used asfeatures to identify the color palette to be used for painting. Our application supports three different color palettes,representing different eras of Monet’s work. The second step performs color mixing of two different colors in thechosen palette. The last step involves applying a three-stage brush stroke algorithm where the image is renderedwith a customized brush stroke pattern applied in each stage. While deep learning techniques are already capableof performing style transfer from paintings to real-world images, such as the success of CycleGAN, results showthat our proposed framework achieves comparable performance to deep learning style transfer methods on tabletopscenes.
Reduction of JPEG Artifacts using BSDEs
Authors: Borkowski Dariusz
Published: August 2021

10.24132/CSRN.2021.3101.1
Line Clustering and Contour Extraction in the Context of 2D Building Plans
Authors: Pointner Andreas , Praschl Christoph , Krauss Oliver , Schuler Andreas , Helm Emmanuel , Zwettler Gerald
Published: August 2021

For the purpose of analyzing a building according to its accessibility or structural resilience, printed 2D floorplans are not sufficient because of the missing link to semantic information. This paper tackles this issue andintroduces a concept for clustering classified lines of a floor plan and for creating semantically enriched contourelements based on different image processing, computer vision and machine learning algorithms. Based on ageneral line clustering approach, we introduce type specific methods forwalls,windows,doorsandstairs. Theresulting clusters are in turn used for a contour creation, which uses minimal rotated rectangles. Those rectanglesare transformed to polygons that are refined using post processing steps. The approach is evaluated via positivetesting using a pixel-based comparison of the process’s result. For this, automatically generated as well as realworld building plans are used. The final evaluation shows, that the concept reaches a confidence of >90% for door,stair and windows and only around 10% for stairs with the run-time linearly scaling with the size of the input.
La cualidad del sinthome
Authors: Gaetano Guillermo
Published: August 2021

El presente artículo busca recuperar las características cualitativas del sinthome reseñadas por Lacan. En este recorrido pretendemos describirlo, a la vez, por su singularidad y en el contexto de los demás elementos de su especie: los cuartos cordeles al nudo RSI. Dentro de esa categoría, las nominaciones -inhibición, síntoma y angustia- tendrán un lugar preponderante de referencia dado que han sido objeto de una importante revisión conceptual por parte de Lacan durante el período de surgimiento del sinthome.