bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of an empirical model for copper extraction from chalcocite in chloride media
Authors: Saldaña Manuel , Rodríguez Freddy , Rojas Anyelo , Pérez Kevin , Angulo Palma
Published: November 2020

Multivariate models are a useful tool when studying the effects of independent variables on one or more dependent variables, since this approach allows modeling of the dynamics of complex systems based on simple analytical models with considerable certainty. Due to the decrease in the copper oxide mineral grades, leaching of copper sulfide minerals (secondary sulfides) has positioned itself as a benchmark of operation for the Chilean mining industry. The present work proposes the study of the effects of sulfuric acid, chloride concentration and time on the extraction of copper from sulfuric minerals (chalcocite), considering an experimental design, the surface optimization methodology and the adjustment of a quadratic model. The experimental data were adjusted by multiple regression analysis and were statistically analyzed. A model was developed to represent the copper extraction from the Cu2S mineral as a function of the statistically significant variables (chloride concentration and time) that contribute to explain the variation of the response variable under the set of parameters sampled.
Association of serum 25-hydroxyvitamin D concentrations with all-cause and cause-specific mortality among individuals with diabetes mellitus
Authors: Wan Zhenzhen , Guo Jingyu , Pan An , Chen Chen , Liu Liegang , Liu Gang
Published: November 2020

Objective: The evidence regarding vitamin D status and
mortality among diabetes is scarce. This study aimed to examine the association
of serum 25-hydroxyvitamin D [25(OH)D] concentrations with all-cause and cause-specific
mortality among adults with diabetes mellitus.

Research Design and Methods: This
study included 6329 adults with diabetes from the Third National Health and
Nutrition Examination Survey (NHANES III) and NHANES 2001-2014. Death outcomes were
ascertained by linkage to National Death Index records through 31 December 2015. Cox proportional hazard models were used to estimate
hazard ratios (HR) and 95% confidence (CIs) for mortality from all
causes, cardiovascular disease (CVD), and cancer.

Results: The weighted mean (95% CI) level of serum 25(OH)D
was 57.7 (56.6, 58.8) nmol/L, and 46.6% had deficient vitamin D (<50 nmol/L [20 ng/mL]). Higher serum
25(OH)D
levels
were significantly associated with lower levels of glucose, insulin, HOMA-IR, HbA1c,
blood lipids, and C-reactive protein at baseline (all Ptrend<0.05).
During 55126 person-years of follow-up, 2056 deaths were documented, including 605 CVD deaths and 309 cancer deaths. After multivariate adjustment, higher serum 25(OH)D levels were significantly
and linearly associated with lower all-cause and CVD mortality: there was a 31% reduced risk of all-cause
mortality and a 38% reduced risk
of CVD mortality per one unit increment in natural log-transformed 25(OH)D (both P<0.001). Compared with participants with 25(OH)D <25 nmol/L, the multivariate-adjusted HRs and 95% CI for participants
with 25(OH)D >75
nmol/L were 0.59 (0.43, 0.83) for
all-cause mortality (Ptrend=0.003), 0.50 (0.29, 0.86) for CVD mortality (Ptrend=0.02), and 0.49 (0.23, 1.04) for cancer mortality (Ptrend=0.12).

Conclusions: In a nationally
representative sample of US adults with diabetes, higher serum 25(OH)D levels
were significantly associated with lower all-cause and CVD mortality. These
findings suggest that maintaining adequate vitamin D status may lower mortality
risk in individuals with diabetes.
CB1 and GLP-1 receptors cross-talk provides new therapies for obesity
Authors: Admin Ada , Zizzari Philippe , He Rongjun , Falk Sarah , Bellocchio Luigi , Allard Camille , Clark Samantha , Lesté-Lasserre Thierry , Marsicano Giovanni , Clemmensen Christoffer , Perez-Tilve Diego , Finan Brian , Cota Daniela , Quarta Carmelo
Published: November 2020

GLP-1 receptor (GLP-1R) agonists effectively improve
glycemia and body weight in patients with type 2 diabetes and obesity, but have
limited weight-lowering efficacy and minimal insulin sensitizing action. In preclinical models,
peripherally-restricted cannabinoid-1 receptor (CB1R) inhibitors, which are devoid
of the neuropsychiatric side-effects observed with brain-penetrant CB1R
blockers, ameliorate obesity and its multiple metabolic complications. Using mouse
models with genetic loss of CB1R or GLP-1R, we demonstrate that these two
metabolic receptors modulate food intake and body weight via reciprocal functional
interactions. In diet-induced obese mice, the co-administration of a peripheral
CB1R inhibitor with long-acting GLP-1R agonists achieves greater reduction in body
weight and fat mass than monotherapies, by promoting negative energy balance.
This co-treatment also results in larger improvements in systemic and hepatic insulin
action, systemic dyslipidemia, and reduction of hepatic steatosis. Thus,
peripheral CB1R blockade may allow safely potentiating the anti-obesity and
anti-diabetic effects of currently available GLP-1R agonists.
PENGARUH PENGGUNAAN MODEL PICTURE AND PICTURE TERHADAP KETERAMPILAN MENULIS TEKS CERITA FANTASI SISWA KELAS VII SMP NEGERI 7 PARIAMAN
Authors: Aldrina Inayyah , Abdurrahman Abdurrahman
Published: November 2020

ABSTRACT The purpose of this study consists of three. First, it describes the writing skills of fantasy text for grade VII Junior High School 7 Pariaman before using the picture and picture models. Secondly, it describes the writing skills of fantasy text of grade VII Junior High School 7 Pariaman using a picture and picture models. Third, describe the effect of using picture and picture models against writing fantasy text skills grade VII Junior High School 7 Pariaman. This type of research is quantitative research with experimental methods. The design of this research is one group pretest-posttest design. The results of this study are three. First, the fantasy text writing skills of grade VII Junior High School 7 Pariaman before using the picture and picture model are in the Almost Enough qualification with an average score of 52.99. Secondly, the skill of writing fantasy text for grade VII Junior High School 7 Pariaman after using the picture and picture model is in the qualification More Than Enough with an average count of 69.53. Third, based on the t-test, the alternative hypothesis (H1) is at a significant level of 95% and the degree of freedom (dk) = n-1 because tcount > t table, which is 4.59 > 1.70. Kata Kunci: pengaruh, model picture and picture, menulis teks cerita fantasi
ANALISIS TINDAK TUTUR LOKUSI DAN ILOKUSI DALAM PROGRAM INI TALK SHOW NET TV SEBAGAI KAJIAN PRAGMATIK
Authors: Syahri Novia , Emidar Emidar
Published: November 2020

ABSTRACT This study aims to analyze the forms of speech acts of locution and illocution associated with the program This Talk Show on Net TV, as well as describing the function of speech. The data in the study are speeches delivered by the emcee as well as invited guests. The technique of collecting data in this study was using a competent, free listening method and the note taking technique. Based on the results of the analysis can conclude the following points. First, this study found 16 locus speech acts. Second, the illocutionary speech acts found in this study were arrested 27. Each of the illocutionary speech acts is assertive, directive, commissive, expressive, and declarative. Get as many as 12 speeches in the form of assertive illocution, 10 speeches in the form of directive illocution, 1 speech in the form of commissive illocution, 3 speeches in the form of expressive illocution, and 1 speech in the form of declarative illocution.Kata kunci: pragmatik, tindak tutur, lokusi, ilokusi
„Superalkali” clusters, production, potential application like energy storage materials
Authors:   Department of Physical Chemistry, VINČA Institute of Nuclear Sciences - National In-stitute of thе Republic of Serbia, Veličković Suzana , Kong Xianglei ,   The State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, China
Published: November 2020

One of the major developments of the past century was the recognition of clusters as building blocks of new materials. “Superalkali” clusters because of their ionization energies which lower than alkaline atoms, present the excellent reducing agents; hence, they are recognized as good can-didates for the synthesis of unusually compounds. “Superalkalis”, plays an important role in the chemistry and material science because of their potential to serve as structural units for the assem-bly of novel nanostructured functional materials, such as nonlinear optical materials, hydrogen storage materials, as well as an excellent reduction reagent for decreasing emissions of carbon dioxide, nitrogen oxides, and molecular nitrogen. One way to get a cluster is to use unconventional methods. To date, the mass spectrometry has proven itself a crucial method, which has no alterna-tive, in the field of the production “superalkali” clusters. However, in order to obtain these clus-ters, it is necessary to make modifications of the mass spectrometers available on the market. With-in this paper, the possibilities of obtaining “superalkali” clusters by combining two classical meth-ods of mass spectrometry such as, Knudsen cell and the surface ionization within a magnetic mass spectrometer will be presented. The modified classic surface ionization mass spectrometry has con-firmed to be an efficient and inexpensive method for obtaining these clusters.
Application of lasers in automotive industry
Authors:   Faculty of Electrical Engineering, University of Belgrade, Belgrade, Serbia, Srećković Milesa , Ivanović Nenad ,   Institute of Nuclear Sciences, Vinča-Belgrade, Serbia, Ostojić Stanko ,   The Academy of Applied Technical Studies Belgrade, Department of Tehnikum Taurunum, Belgrade, Serbia, Kovačević Aleksandar ,   Institute of Physics, University of Belgrade, Belgrade, Serbia, Ratković Kovačević Nada ,   The Academy of Applied Technical Studies Belgrade, Department of Computer-mechanical Engineering, Belgrade, Serbia, Karastojković Zoran ,   IHIS Techno Experts, Belgrade, Serbia, Jevtić Sanja ,   Academy of Technical and Art Applied Studies, Department High Railway School of Vocational Studies, Belgrade, Serbia
Published: November 2020

Laser role and couplings with vehicles and solar power are numerous and in this paper we will analyze the principles, contemporary development of special scientific areas and engineering, from the metrological point of view. This area is, in broader sense, connected to history of our planet, or since the midst of the previous century and golden age of quantum electronics. Some of the general problems have rather slow dynamics of solving, but on the other hand, considering contemporary state-of-the-art of unconventionally powered vehicles and realized components, some characteristics change conservative opinions on the realizable capacities. The main goal of this consideration is to point to the unity of problems, which might speed up the gradients of the developments in solar technology of automotive technology, by multi-disciplinary approach. Overall, we have considered both theoretical approaches and current developed systems in the fields of technology, metrology and power production and transformation.
Investigation of the influence of relative humidity and temperature on the IOT solution with low cost air quality monitoring
Authors:   Innovation center of School of Electrical Engineering in Belgrade, Serbia, Vajs Ivan , Dragić Dejan ,   School of Electrical Engineering - University of Belgrade, Innovation center of School of Electrical Engineering in Belgrade, Serbia, Radovanović Ilija ,   School of Electrical Engineering - University of Belgrade, Innovation center of School of Electrical Engineering in Belgrade, Serbia
Published: November 2020

Due to the rising air pollution in densely populated areas, the need for reliable and cost-effective air monitoring systems is on the rise. Low-cost off-the-shelf air quality sensors available on the market provide a good starting point as they are readily available and inexpensive but fall short when it comes to accuracy and reliability. In this paper, the influence of relative humidity and temperature on the accuracy of these sensors is analyzed. Different types of statistical models are used in order to model the measuring error of the sensors caused by relative humidity and temperature. Obtained results show that the accuracy of the off-the-shelf system can be improved by adequate compensation and a more reliable, yet inexpensive air monitoring systems could be implemented.
Possibility of using sour cherry pits as biofuel for obtaining thermal energy
Authors:   Šukom Knjaževac, Knjaževac, Serbia, Petrović Milorad , Jovanović Milan ,   Šukom Knjaževac, Knjaževac, Serbia, Štirbanović Zoran ,   University of Belgrade, Technical faculty in Bor, Bor, Serbia, Sokolović Jovica ,   University of Belgrade, Technical faculty in Bor, Bor, Serbia, Gordić Vojka ,   Mining and Metallurgy Institute Bor, Bor, Serbia
Published: November 2020

In the Republic of Serbia, sour cherries are grown on approximately 14,000 hectares and represent the fourth fruit species in terms of area. The pits that remain after the processing of sour cherries are a by-product that burdens the business of the processors of this fruit. The quantities of pits that are produced annually are estimated at around 7,000 tons. This represents a good energy potential, bearing in mind that the calorific value of sour cherry pits is around 22 MJ / kg of dry matter. An additional convenience of sour cherry pits is in their dimensions that make them suitable for direct use in pellet boilers, without any pre-treatment. One of the boilers in which it is possible to burn dried sour cherry pits in order to obtain thermal energy, is Šukoplam VENT, a manufacturer of boilers Šukom from Knjaževac. This boiler has good characteristics such as: high efficiency (up to 94%), quality of materials and workmanship, the possibility of using several types of biofuels and their quality combustion, based on which it met the requirements for Class 5 (Ecodesing) related to pollutant emissions by the latest European standards.
Potential of agricultural biomass in biogas production systems in the Republic of Serbia
Authors:   University of Belgrade, Faculty of Agriculture, Belgrade, Serbia, Ećim Đurić Olivera , Kreculj Dragan ,   Academy of technical vocational studies, Belgrade, Serbia, Živojinović Danijela ,   Academy of technical vocational studies, Belgrade, Serbia, Vorkapić Miloš ,   University of Belgrade, Institute for chemistry, technology and metallurgy, Belgrade, Serbia
Published: November 2020

According to official data, biomass represents the most significant potential of renewable energy sources in the Republic of Serbia. It accounts for about 63% of the total potential, but for now its use is not at a satisfactory level. In total amounts of 14,2·104 TJ, it is estimated that about 9,6·104 TJ is unused. This is still evidently a large available potential, especially in agricultural biomass, with the exception of the binding share of biofuels in the transport sector, whose annual potential is around 7,1·104 TJ. The main obstacles for more intensive biomass processing continue to be the high costs of manipulation, the dispersion of land holdings and especially the time mismatch in the production, processing, and use of biomass, which certainly increases storage costs. In the former analyzes, the most widespread use in households, biomass has in direct combustion and production of thermal energy, or in the production of pellets and briquettes, where it is still less represented in relation to forest biomass. Although in the last few years the growth trend of biogas power plants is growing, and the total installed capacity is about 20 MW, this sector has the greatest potential for development in the coming years, especially in local communities, that are primarily focused on agricultural production. The paper deals with the condition analysis of the production, processing, transport, and the possibility of applying agricultural biomass, for the purpose of cogeneration electricity and heat production. The impact of the use of biomass on the protection and sustainability of the environment is also considered, through the analysis of a case study on the examples of territorial units in Vojvodina.
Application of renewable energy resources in buildings
Authors:   University of Belgrade, Technical Faculty in Bor, Bor, Serbia, Dragović Njegoš , Vuković Milovan ,   University of Belgrade, Technical Faculty in Bor, Bor, Serbia, Urošević Igor ,   University of Belgrade, Faculty of Architecture, Belgrade, Serbia
Published: November 2020

The structure of the facilities under construction must be designed to be energy efficient. The contribution of each residential or business, production and storage facility must be viewed in the context of energy savings and transformation through a centralized system. Renewable energy sources (RES) make a significant contribution to energy efficiency in buildings, which can be combined with each other and through huge transformations from thermal to electricity, achieve huge savings. in addition to savings and efficiency, RES also affect the construction of facilities that fit into the living space and compensate for the modalities of heating-cooling-transformation-storage-sale of excess energy The paper analyzes the current state of licensing, design and construction of facilities, as well as the issuance of use permits with reference to the installation of "green" materials and the creation of an appropriate atmosphere that supports renew-able energy sources and energy efficiency.
Industrial production in ensuring economic security of the region
Authors: Miller Maxim A.
Published: November 2020

The article is devoted to the study of the impact of the industrial sector on ensuring economic security at the regional level. The article addresses the issues of orientation of
methods assessment of economic security of the region, to use data that reflects the functioning of the industry and also to study of the contribution of manufacturing to economic
security and sustainable development in Omsk region. The research uses scientific methods
of comparison, analysis of materials, as well as the calculation method. The main results of
the study are that the industrial sector of the regional economy is one of the key and mandatory components of ensuring regional socio-economic development, maintaining the necessary level of protection of the region, respectively, the performance of industry should be
one of the main blocks in complex methods for assessing economic security at the regional
level. Regarding the Omsk region, it is confirmed that the region in the context of economic
security and social and labor stability is significantly dependent on the manufacturing sector.
Risks of spatial development of the transport industry
Authors: Bychkova Anna A. , Nikulina Natalia L.
Published: November 2020

The transport network plays a significant role in the development of regions, as it is
one of the main parts of both industrial and social life. Both for the balanced development of
the regions as a whole and for the development of the transport network, an integrated approach is necessary, taking into account various risks. The article discusses the risks of developing the transport industry in the regions, the possibility of reducing threats to strengthen
inter-regional cooperation in order to create an optimal, combined economic space. The article
substantiates the need to take into account the risk when drawing up a strategy for regional
development of the transport system. The author identifies the risks of spatial development of
the transport industry that limit the development of regions, i.e. adverse events that can hinder
the development of regions on a national scale. The object of research is the development of
the transport network of regions, the subject of research is the risks that slow down the development of the transport network of regions. In the course of the research, general scientific
methods of cognition, the method of theoretical comparison, system-structural analysis, and
the method of theoretical research were used. As a result, the characteristic risks that hinder
the development of the transport industry in the regions are identified, and the causes of
threats that need to be addressed when developing a strategy for the development of the
transport network to minimize adverse situations in the Russian regions are identified.
Analysis of successful experience of innovative enterprises in the regions of Kazakhstan
Authors: Sagieva Rimma K. , Zhuparova Aziza S.
Published: November 2020

In the context of the current level of development of the knowledge-based economy of Kazakhstan, characterized by a huge shortage and dissociation of research personnel, lack of innovative ideas for commercialization, the concentration of efforts of the state and the business community on researching the problems of effective research and development funding seems more than appropriate. In Kazakhstan, the main reason for the low impact of innovation is also the lack of funding for research and development, as well as the low efficiency of financial resources in the scientific sector. This is evidenced by official statistics, as well as the cost of private financing of research and development in Kazakhstan per capita is $ 247, and the level of state funding is $ 4, which is one hundred or two hundred. times less compared to the leading countries of the world. In this paper, the study of examples of the implementation of funding of high-tech industries in the regions of Kazakhstan. The implementation of this study allows us to identify the most successful experience in implementing innovation activities in high-tech companies in Kazakhstan, which makes this work relevant. The research methodology includes such methods of knowledge of economic phenomena and processes: economic and statistical analysis, conducting qualitative analysis based on questionnaires, interviews. A survey of 1155 companies was conducted, according to the results of which 30 interviews were conducted, which made it possible to carry out a correlation-regression analysis of the dependence of the factors influencing the innovative development of companies. The research results will allow to study the experience of successful companies, to identify growth points, as well as provide an opportunity to improve the system of financing high-tech industries. The practical and theoretical significance lies in the fact that its main conclusions and recommendations can be used to develop effective strategies and tactical tools of innovation policy in high-tech enterprises.
Theoretical foundations of the improvement of public service in the Republic of Kazakhstan
Authors: Dontsov Sergey S. , Kadyrova Akmaral S. , Rakhimova Saule A. , Nurgaliyeva Ainash A. , Karimbergenova Madina K.
Published: November 2020

The article discusses the theoretical foundations of an effective organization of public service, which is a system of modern knowledge about the formation and development of
public service as a social phenomenon, its types, mission, principles, functions and models. A
number of ideas that are appropriate to use in the process of reforming and further improving
the country's public service are analyzed. An extended concept of public service is proposed
as a system of social institutions: legal, social, organizational, political, economic and moral.
Improvement of professional managerial activities is aimed at ensuring that public servants
combine knowledge, skills and abilities in a specific professional area (economist, lawyer,
engineer, etc.) with knowledge, skills and abilities of public administration. It is noted that further development of the theoretical foundations of public service requires using the achievements of all management-related sciences and their theoretical conceptualization. The basis
of practical recommendations for improving public service in the Republic of Kazakhstan is an
analysis of positive international experience concerning transition from traditional forms of
public administration to “the new public administration” involving the delegation of some of its
functions to market structures and a focus on key strategic issues. The development of a service approach to the provision of public services, an increase in efficiency, flexibility, and transparency of public administration and a closer connection with citizens who use public
services are recommended. Practical implementation of “the new public administration” in our
country is proposed to be implemented through the introduction of such models as “marketbased”, “participating”, “flexible” and “deregulated”. One of the fundamental principles for the
development of Kazakhstan's public service should be meritocracy.
El pensamiento de Paulo Freire en tiempo presente. Conferencia de inauguración de la Cátedra Libre Paulo Freire de la UNLP, 23 de mayo de 2019, FaHCE, Ensenada
Authors: Puiggrós Adriana
Published: November 2020

El pensamiento de Paulo Freire en tiempo presente. Conferencia de inauguración de la Cátedra Libre Paulo Freire de la UNLP
BLENDED LIBRARIAN, KONSEP DAN STRATEGI DALAM PEMENUHAN KEBUTUHAN INFORMASI MASYARAKAT BERBASIS SMART CITY
Authors: Oktaviana Dina
Published: November 2020

Smart City, diterapkan di beberapa Kota di Indonesia. Tata pemerintahan ini menggunakan teknologi sebagai piranti utama, membuat tata pemerintahan elektronik, model jaringan, pembelajaran dan perpustakaan berbasis digital. Perpustakaan dituntut untuk menyediakan informasi sesuai disesuaikan dengan teknologi yang tersedia. Pustakawan juga harus mengembangkan keterampilannya untuk memaksimalkan layanan yang akan di berikan. Blended librarian adalah konsep dalam ilmu perpustakaan untuk pustakawan yang sangat tepat diterapkan pada kondiai masyarakat berbasis smart city. Konsep dan strategi penerapan blended librarian sudah ada di beberapa negara. Untuk itu dalam penelitian ini, kajian dilakukan pada beberapa artikel guna mengekstraksi konsep dan strategi blended librarian yang cocok di implementasikan pada kondisi masyarakat berbasis smart city
APOGEO
Authors: Jiménez Jódar Víctor Abel
Published: November 2020

En febrero de 2020 fui invitado a visitar la casa, el taller y el museo de Miguel Berrocal en Villanueva de la Algaida. Recuerdo la magnífica decoración de la casa, el emblemático edificio que alberga el museo, la grata sobremesa con sus hijos… Pero lo que más me sorprendió fue el taller del artista. Allí pude sumergirme en la obra de Miguel Berrocal, en sus técnicas de trabajo, en el concepto de reproducción, en su filosofía estética. Allí pude tocar sus esculturas, jugar con sus obras desmontables, embeberme de la compleja mirada que tenía sobre el mundo. Y allí, en un rincón cercano a la biblioteca (donde se atesoran los libros que usó en vida Miguel Berrocal, y sus escritos, láminas e ilustraciones, e incluso, un poema dedicado a una de sus Meninas por Rafael Alberti), leyendo algunos textos y artículos, ausente del mundo y en diálogo íntimo con el lugar y con el artista, descubrí su famoso Codex Berrocalensis, una serie de acuarelas acompañadas por unas reflexiones de índole filosófica escritas por su propia mano. En estas acuarelas, estos textos, se sintetiza una parte muy importante del pensamiento estético de Miguel Berrocal. Tal fue el impacto que provocó en mí su lectura, que durante meses estuve rumiando sus postulados hasta desvanecerme en ellos. El resultado de esta experiencia ultrasensorial ha sido la escritura de una serie de poemas en los que entro en diálogo con los textos y reflexiones que Miguel Berrocal dejó plasmados en el Codex Berrocaliensis.
De cómo romper el cántaro
Authors: Rivas Herencia Eugenio
Published: November 2020

Ante la proposición de una escultura del vacío en la obra de Miguel Berrocal, estudiamos las influencias del pensamiento oriental en el trabajo del escultor y profundizamos en las referencias a través de las que se filtraría en su trabajo el interés por esta noción escurridiza que escapa al entendimiento occidental y a su expresión plástica.Nos acercamos a quien fuera su maestro, Ángel Ferrant; al introductor del hueco en la escultura británica del siglo XX, Henry Moore; y a sus coetáneos, Oteiza y Chillida, máximos representantes de una escultura del vacío en nuestro país. El cierre de esta problemática, para asumir otros retos, supone en Berrocal la clausura y abandono de esta cuestión irresoluble. Con esta liquidación deja de lado un desafío superior que no volverá a afrontar de manera comprometida, aunque se filtrará para siempre en su manera de entender el espacio escultórico.
UJI COBA LAMPU CELUP LED PADA JARING INSANG SEBAGAI UPAYA MENINGKATKAN HASIL TANGKAPAN
Authors: Hartono Angga , Puspito Gondo , Mawardi Wazir
Published: November 2020

Jaring insang merupakan alat penangkap ikan berupa lembaran jaring yang berbentuk persegi panjang. Prinsip utama pengoperasiannya adalah menghadang pergerakan ikan. Keberhasilan operasi penangkapannya sangat tergantung pada ada atau tidaknya ikan yang melintas melewati jaring. Perbaikan teknik penangkapan ikan pada jaring insang perlu dilakukan untuk meningkatkan berat tangkapannya. Solusinya adalah inovasi penggunaan atraktor berupa lampu untuk menarik perhatian ikan agar datang menuju alat tangkap, sehingga jaring insang yang bersifat pasif tidak hanya menunggu ruaya ikan yang melewatinya. Salah satu sumber cahaya yang bisa digunakan adalah lampu LED. Metode penelitian yang digunakan adalah experimental fishing menggunakan dua unit alat tangkap jaring insang yang dioperasikan secara bersamaan, masing-masing menggunakan lampu dan tanpa lampu. Tujuan yang ingin dicapai adalah mengetahui komposisi hasil tangkapan, membuktikan bahwa penggunaan alat bantu lampu pada jaring insang akan meningkatkan berat hasil tangkapan dan menentukan posisi jaring dari lampu yang menghasilkan berat tangkapan tertinggi. Hasilnya adalah: (1) Ikan hasil tangkapan jaring insang dengan lampu (JDL) terdiri atas 10 jenis, atau 2 jenis lebih banyak dibandingkan dengan jaring insang tanpa lampu (JTL). Delapan jenis ikan yang sama adalah tongkol, tenggiri, talang-talang, alu-alu, kembung, semar, galang sadap, dan kwee. Adapun 2 jenis ikan yang hanya tertangkap oleh JDL adalah tentengkek dan bawal hitam; (2) Penggunaan alat bantu lampu pada jaring insang terbukti meningkatkan hasil tangkapan dengan berat hasil tangkapan JDL 189.765 g, dan (3) Lembar jaring yang menghasilkan berat tangkapan tertinggi berada pada posisi pertama, yaitu lembar 1, 6, 7, dan 12 dengan hasil tangkapan sebesar 108.308 g.
PRODUKSI DAN PRODUKTIVITAS TUNA OLEH KAPAL TUNA LONGLINE YANG BERBASIS DI PPN PALABUHANRATU
Authors: Imron Mohammad , Yusfiandayani Roza , Baskoro Mulyono S.
Published: November 2020

Produktivitas penangkapan tuna dapat dilihat dari produksi penangkapan yang didaratkan di pelabuhan (landing) per upaya penangkapan (effort). Pelabuhan Perikanan Nusantara (PPN) Palabuhanratu menjadi salah satu pelabuhan perikanan yang aktivitas perikanannya tergolong aktif di wilayah pesisir selatan Pulau Jawa dan menjadi salah satu pusat kegiatan perikanan tangkap di wilayah Propinsi Jawa Barat. Produksi ikan tuna di PPN Palabuhanratu mengalami peningkatan yang cukup signifikan dari tahun 2010 sampai tahun 2019. Pada tahun 2014-2018 produksi ikan tuna di PPN Palabuhanratu mengalami penurunan yang cukup drastis. Pada tahun 2019, produksi kembali meningkat menjadi 1,091,612 ton. Landing Per Unit Effort (LPUE) digunakan dalam penelitian perikanan untuk mengindikasikan kelimpahan sumberdaya yang digunakan untuk melakukan stock assessment ketika mengestimasi kelimpahan relatif dari suatu spesies yang dieksploitasi. Komposisi hasil tangkapan tuna oleh kapal tuna longline terdiri atas ikan tuna sirip kuning (Thunnus albacores), tuna mata besar (Thunnus obesus), ikan tuna albakor (Thunnus alalunga). Produksi tuna yang didaratkan di PPN Palabuhanratu dari tahun 2010-2019 mengalami fluktuasi. Pada tahun 2010 produksi ikan tuna sirip kuning sebesar 444,952 ton, ikan tuna mata besar sebesar 979,189 ton, ikan tuna albakor sebesar 122,671 ton. Pada tahun 2019 produksi ikan tuna sirip kuning sebesar 617,992 ton, ikan tuna mata besar sebesar 240,487 ton, ikan tuna albakor sebesar 233,133 ton. Produktivitas tertinggi terjadi pada ikan tuna sirip kuning tahun 2014 dengan nilai LPUE sebesar 6,09 dengan produksi sebesar  2,448,171 ton dengan jumlah effort 402. Produktivitas mengalami fluktuasi setiap tahunnya.
STUDI PENANGANAN HASIL TANGKAPAN PURSE SEINE DI KM BINA MAJU KOTA SIBOLGA
Authors: Hutapea Roma Yuli Felina , Khikmawati Liya Tri , Gusfirmansyah Wahyu
Published: November 2020

Penanganan hasil tangkapan merupakan salah satu faktor yang mempengaruhi kesegaran serta kualitas ikan hasil tangkapan. Upaya yang dilakukan pemerintah dalam menjaga mutu produk perikanan adalah dengan mengeluarkan KEPMEN-KP 52A/2013 tentang Persyaratan Jaminan Mutu dan Keamanan Hasil Perikanan pada Proses Produksi, Pengolahan, dan Distribusi. Keberpihakan pemerintah dengan mengeluarkan KEPMEN-KP 52A/2013 diharapkan dapat menghasilkan produk perikanan yang baik, aman, dan sehat. Tujuan dari penelitian ini adalah mengetahui kegiatan penanganan hasil tangkapan dan mengetahui kesesuaian kegiatan penanganan di KM Bina Maju dengan KEPMEN KP 52A/2013. Metode penelitian yang digunakan adalah studi kasus. Objek atau lokasi kegiatan penanganan ikan di KM Bina Maju yang telah menerapkan prinsip 3C1Q Clean, Carefull, Cold, dan Quick. Kesesuaian kegiatan penanganan di atas KM Bina Maju dengan KEPMEN KP 52A/2013, adalah ketersediaan palka yang digunakan untuk penyimpanan hasil tangkapan yang terpisah dari ruang mesin dan ruang ABK. Hanya saja dalam palka belum dilengkapi dengan mesin pendingin air laut dan pengatur otomatis suhu udara. Kesesuaian SDM dengan KEPMEN KP 52A/2013 adalah kondisi ABK yang sehat, tidak merokok, dan tidak meludah di area penyimpanan. Ketidaksesuaiannya adalah kurangnya kesadaran dalam penggunaan pakaian kerja dan kegiatan mencuci tangan sebelum kegiatan penanganan hasil tangkapan.
FAKTOR-FAKTOR YANG MEMPENGARUHI TINGKAT KESEJAHTERAAN NELAYAN KECIL DI PPN PEKALONGAN
Authors: Mudzakir Abdul Kohar , Suherman Agus
Published: November 2020

Nelayan kecil (artisanal) merupakan kelompok nelayan yang dinilai rentan secara sosial dan ekonomi, dengan tingkat kesejahteraanya yang rendah, salah satunya dilihat dari kepemilikan barang dan semua tingkat pemenuhan kebutuhan sehari-hari. Salah satu indikator untuk menilai tingkat kesejahteraan tersebut adalah dengan indikator BPS (Badan Pusat Statistik) tahun 2015. Penelitian ini bertujuan untuk mengetahui faktor-faktor yang mempengaruhi tingkat kesejahteraan nelayan kecil di PPN Pekalongan. Metode penelitian yang digunakan deskriptif kuantitatif. Pengambilan responden berdasarkan puposive sampling, dengan kriteria responden adalah nelayan kecil dengan kepemilikan kapal di bawah 10 GT, didapatkan jumlah responden 159 orang. Dengan menggunakan regresi linier berganda faktor yang mempengaruhi tingat kesejahteraan nelayan (Y) antara lain: X1 (tingkat pendapatan), X2 (pengeluaran rumah tangga), X3 (keadaan tempat tinggal), X4 (fasilitas tempat tinggal), X5 (kesehatan anggota keluarga), X6 (kemudahan mendapat pelayanan kesehatan), X7 (kemudahan memasukkan anak ke jenjang pendidikan), dan X8 (kemudahan mendapat fasilitas transportasi). Hasil penelitian didapatkan hanya 4 faktor secara signifikan mempengaruhi tingkat kesejahteraan nelayan, antara lain keadaan tempat tinggal, kesehatan anggota keluarga, kemudahan memasukkan anak kejenjang pendidikan, dan kemudahan mendapatkan fasilitas transportasi dimana hubungan pengaruhnya semua positif kecuali faktor kemudahan mendapat fasilitas transportasi. Dengan pengaruh terbesar adalah pada fasilitas tempat tinggal, sehingga dengan perbaikan fasilitas tempat tinggal bagi nelayan kecil akan memperbaiki tingkat kesejahteraannya.
EKSTRAKSI KITOSAN DARI CANGKANG RAJUNGAN PADA LAMA DAN PENGULANGAN PERENDAMAN YANG BERBEDA
Authors: Djaenudin Djaenudin , Budianto Emil , Saepudin Endang , Nasir Muhamad
Published: November 2020

Penelitian mengenai pembuatan kitosan dari cangkang rajungan telah dilakukan oleh beberapa peneliti sebelumnya. Penelitian ini bertujuan untuk menentukan pengaruh waktu dan pengulangan perendaman dalam larutan NaOH terhadap kenaikan nilai derajat deasetilasi kitosan. Sebelumnya dilakukan ekstraksi kitin dari cangkang rajungan melalui dua tahap, yaitu deproteinasi dan demineralisasi. Proses deasetilasi terhadap kitin dilakukan dengan variasi waktu perendaman dalam larutan NaOH (2, 3, dan 4) jam serta dilakukan pengulangan perendaman 3, 4, dan 5 kali. Proses deasetilasi menggunakan larutan NaOH 50% (b/v) dengan perbandingan kitin terhadap larutan NaOH sebesar 1:20 (b/v) pada suhu 120°C. Kitosan yang diperoleh kemudian dianalisis gugus fungsi menggunakan FTIR dan dianalisis Derajat Deasetilasi (DD) dengan metode titrasi. Kitin yang diperoleh sebanyak 12,4% dari tepung cangkang rajungan. Derajat Deasetilasi kitosan terbesar (terbaik) didapatkan pada waktu proses deasetilasi selama 4 jam dan jumlah pengulangan deasetilasi sebanyak 5 kali dengan DD sebesar 44,26% dan rendemen kitosan 83%. Lamanya waktu perendaman dalam larutan NaOH merupakan faktor yang paling berpengaruh terhadap nilai derajat deasetilasi kitosan yang dihasilkan.
TINGKAT KONTAMINASI MIKROBA PADA BEBERAPA UNIT PENGOLAHAN IKAN ASAP PINEKUHE DI KABUPATEN SANGIHE
Authors: Karimela Ely John , Mandeno Jeffri A
Published: November 2020

Salah satu produk hasil olahan perikanan asap yang dimiliki oleh nelayan Kabupaten Kepulauan Sangihe adalah Pinekuhe. Penelitian ini bertujuan untuk mengetahui tingkat kontaminasi mikroba pada ikan asap Pinekuhe hasil olahan nelayan Kabupaten Kepulauan Sangihe. Pengambilan sampel diambil acak dibeberapa unit pengolah ikan asap Pinekuhe. Pengamatan kemunduran mutu produk ikan asap Pinekuhe, diamati melalui uji Total Plate Count (TPC), total kapang dan total Staphylococcus sp. Hasil penelitian menunjukkan bahwa nilai TPC pada semua pengolah memenuhi standar SNI. Nilai TPC pada pengolah A, B, C dan D, berturut-turut sebesar  1,3 x 104 CFU/g, 2,6 x 104 CFU/g, 6,9 x 104, dan 1,2 x 104 CFU/g.  Hasil pengamatan total Staphylococcus sp. pada pengolah A dan pengolah B menghasilkan nilai 0, sedangkan pengolah C memiliki nilai total yaitu 1,1 x 102 TVC/g dan pengolah D memiliki nilai total Staphylococcus sp. 1,2 x 102 TVC/g. Jumlah total bakteri, jumlah total kapang, dan jumlah total Staphylococcus sp. masih memenuhi syarat SNI, kecuali Staphylococcus sp. pada Pengolah C dan Pengolah D melebihi jumlah yang dipersyaratkan oleh Standar Nasional Indonesia mengenai batas cemaran mikroba pada ikan asap.
Degradation of low-rank coal excavated from coal-mine Záhorie by filamentous fungi
Authors: Smoleňová Eva , Pokorný Richard , Kaliňák Michal , Liptaj Tibor , Šimkovič Martin , Varečka Ľudovít
Published: November 2020

The ability of Trichoderma strains isolated from lignite and of Earth surface-derived strains to attack (solubilise) lignite, peat and wood was compared using glutamate as a carbon source. The results showed that lignite-derived microorganisms solubilise lignite to similar extent as Trichoderma strains isolated from the Earth surface. Solubilisation processes involve the action of enzymes and alkaline pH. The solubilisation of lignite was accompanied by a small increase of conidia-bound laccase, whereas that of peat was accompanied by (secretion) activity of cellulase, laminarinase, laccase, and lignin-peroxidase-like enzyme. In addition, data were obtained which show that bacteria contained in the lignite are able of lignite solubilisation and utilisation.
Mathematical Algorithm for Solving Two–Body Problem
Authors: Alghamdi M. H. , Alshaery A. A.
Published: November 2020

In this paper, computational algorithm with the aid of Mathematica software is specifically designed for the gravitational two–body problem. Mathematical module is established to find the position and velocity vectors. Application of this module for different kind of orbits (elliptic, parabolic and hyperbolic) leads to accurate results, which proved module efficiency and to be skillful. The classical power series method is to be utilized as the methodology.
Travel Down Memory Lane: Nostalgia and Nostophobia in Youth (2017)
Authors: Zhu Ying
Published: November 2020

The article analyses Youth, a Chinese melodrama directed by Feng Xiaogang in 2017, as a representation of China during a transitional period in history. It explores issues of nostalgia and nostophobia in connection with the complexities of memory, representation, and viewing pleasure. It discusses how sound and image trigger memories and conflicting emotional reactions. In the film’s nostalgic and elegiac re-enactment of a controversial past, the military art troupe performs songs and dances extolling socialist virtues as their own lives gradually unravel with the dawn of a post-socialist era. The article elaborates on how Youth reflects and enlivens personal and collective social memory as well as how we negotiate our ambivalent feelings towards the representation of a controversial past.
The Ethical Anxiety of Remediation and Speculative Aesthetics in Landscape Film
Authors: Szabó Zoltán
Published: November 2020

The link between avant-garde cinema and painting has always been a conspicuous one but perhaps never as much as in the case of landscape films. However, not only repurposing or evoking specific paintings but constructing entire films with the intention of producing cinematic analogies to certain traditions of landscape painting presents a number of issues, especially when the films in question are inspired by the sensibilities of 19th-century Romanticism and explore similar topics, such as the works of Peter Hutton. The problem is essentially twofold: on the one hand, how to break away from the painterly roots and make an exclusively cinematic pictorial representation of landscape and, on the other hand, how to account for the complicit position of the filmmaker with regard to the nature–technology opposition they address. Within the theoretical framework of the recent speculative turn in philosophy and the implications of this with regard to aesthetics, I argue that an object-oriented approach to landscape filmmaking – as seen in the works of Chris Welsby –, by establishing pre-compositional rules within which landscape itself can intervene in the filmmaking process, provides a solution to both the aesthetic and the ethical anxiety that haunt landscape filmmakers.
Modern Classic in the Web Environment: Narrative Variations of V. Nabokov’sLolitain Fanfiction
Authors: Drozdova Anastasiia , Petrov Vladimir
Published: November 2020

The main focus of this paper is on the narrative strategy used by fan writers in the process of interpretation of a modern classic. The research is based on the hypothesis that text-interpretation implements the existing yet implicit narrative lines of an original source. The discussion focuses on Vladimir Nabokov’s œuvre represented by the novelLolitain amateur writers’ communities. The article’s hypothesis is that due to the existence of English and Russian versions ofLolita, fan texts in both corpora differ in the choice of linguistic means, but use similar narrative structures (Greimas). Whenever the narrative scheme is not oversimplified to resemble the model of a mass literature novel, it follows Humbert’s confession scheme in a way the character himself wants the fictional reader to perceive it. If the name of one of the actants is omitted or the two-actant model is expanded, the amateur text is close to the plot of the novel and its auto-citation structure. The novel, devoted to the story about an erroneous interpretation, is open to any mass-media adaptations. The original narrative strategy ofLolitais more exposed through the fan adaptations: the active reader is an obligatory participant in the artistic creation.
Sights and Sounds of Big Data: Ryoji Ikeda’s Immersive Installations
Authors: Lakatos Mihály
Published: November 2020

The Japanese multimedia artist Ryoji Ikeda’s work can be interpreted as a contact between mediums, but also as a contact between disciplines. Most of his video installations are based on concepts borrowed from the field of mathematics, physics or information technology. In this paper I will examine Ikeda’s audiovisual installations by presenting these multimedial installations as possible methods of visualizing digital data in the context of contemporary art. Considering their digital and abstract nature, these works can also be analysed as unique audiovisual environments built from different media based on the same data-sets, offering the possibility of immersion. By unfolding the medial relations within Ikeda’s work I will try to demonstrate how the combination of sight and sound creates the inter-sensual experience of getting in touch with digital data.
Embeddedness or Marginalization? Aspects for Analysing the Local Embeddedness of Innovative Agricultural Enterprises in Szeklerland
Authors: Zoltán Biró A. , Sárosi-Blága Ágnes
Published: November 2020

Relying on an interview-based research carried out in the Szeklerland region (Romania), the present study investigates the social embeddedness patterns of innovative agricultural initiatives existing in rural areas. The analysis covers three areas: structural embeddedness patterns of local scale, practical initiatives strengthening social embeddedness, and ideas of innovative actors on their future role within the local community. The innovative agricultural actors included in the analysis are local agents who attempt to position themselves and their activities on a local scale amidst diffuse and constantly changing conditions. The specific forms of embeddedness under scrutiny here indicate that innovative actors and practices form part of the local community mostly on the structural level, functionally making their presence felt to a lesser extent.
Standard Project Risk Analysis Approach
Authors: Žužek Tena , Rihar Lidija , Berlec Tomaž , Kušar Janez
Published: November 2020

Background: To stay competitive in a highly unpredictable market of today, companies must be able to manage project risks effectively. The basis for an effective risk management is a thorough risk analysis. Despite the availability of many different risk analysis approaches, companies can be reluctant to use them, since the models are usually complex and very time consuming.

Objectives: The main objective is to present a simple, yet effective risk analysis approach that can also serve as a useful basis for resolving project risks.

Methods/Approach: The proposed standard risk analysis approach is based on a standard risk model that deals with risk events and impacts separately and therefore allows for a separate planning of preventive and corrective measures. To classify risks and to represent them graphically, a risk map is used.

Results: The use of the proposed approach is illustrated on a die-cast tool development project. The approach proved to be very simple to use and it served as a useful basis for resolving the identified risks.

Conclusions: The main advantage of the proposed approach is its simplicity and clarity. It can also be used as a quick decision-making tool in a subsequent risk resolving process.