bluuebunny/crossref_metadata_2025 huggingface dataset:
Experience
Authors: Sheehan Liam
Published: July 2021

The dominance of vision within the human sensory system, particularly in fields such as Architecture, has created an ocular-centric paradigm prevalent in Western architectural culture. “Experience” is an architectural design thesis that uses Virtual Reality (VR) design techniques to explore how we, as designers, can affect spatial presence by integrating other bodily senses within virtual environments. “Experience” integrates four senses, Vision, Audition, Kinaesthesia and Thermoception, as combined for exploration.

The relationship between the human senses, in particular thermoception, and the spaces we experience is the particular focus of this thesis. Juhani Pallasmaa’s theories of sensory fragmentation have been applied as an important critical theoretical approach. This study aims to determine the extent to which our less commonly simulated sensory functions can be used within VR design to experience virtual spatial qualities. Specifically, it introduces a physical thermal atmosphere around the VR user to alter spatial and sensory perceptions and create virtual atmospheres. The development of a real ‘spatialised’ heating environment allows the thermal qualities of virtual space to be perceived by the user.

In this context, space is defined as the experiential medium that situates itself within the bounds of a room. It is not of a fixed size, nor does it have fixed qualities. Instead, this research applies Henry Lefebvre’s ideas that the body creates space due to the relationship between the body’s deployment in space and its occupation of space.

Through theoretical reviews and James Turrell and Olafur Eliasson’s artwork analysis’, ‘Experience’ generates an understanding of spatial perceptions, human sensory experience and space. These understandings were then applied to the virtual environment through a range of computational design means.

The ideas of sensory fragmentation were then applied to a series of design experiments. Each sense was treated as its own sensory system fragment, which allowed a series of conceptual, and developed spatial, interventions to be created. Each spatial intervention provided unique insights into the independent sensory fragments, which eventuated in the design of the final holistic sensory experience.

The final sensory design, titled Sensationalising VR, results showed how sensory balancing must be achieved before implementing new sensory experiences. Thermoception, the body’s ability to detect magnitude and direction of temperature changes, proved to be a fragile sensory fragment that requires careful balancing when being engaged with other sensory stimuli in a VR setting.

The conclusions resulting from “Experience” suggests that the human sensory system’s visual bias can be usefully augmented; it can be shifted, altered and even removed by designers. The introduction of a spatial thermal atmosphere around VR users is shown to affect the perception of presence in that space.
Exploring Effective Practices in Managing Distance Learning for Teaching Art and Design in Bahrain
Authors: Al Hashimi Sama’a
Published: July 2021

As universities move to virtual learning, the need to explore the most effective practices for remotely teaching art and design students became very critical. It is very important to examine the strategies universities are using to efficiently transfer skills and knowledge and meet the needs of students through an online learning environment. Art and design classes involve hands-on activities and requirements that cannot easily be met in digital environments. Therefore, the study aims to investigate the creative approaches that art and design educators adopted to transition to remote teaching. The study involved conducting an online focus group with eleven art and design educators at The University of Bahrain to investigate the experiences, perceptions, and the challenges they faced while teaching art and design remotely during the Covid-19 Pandemic. The focus group engaged the educators in a semi-structured discussion in order to gather qualitative data that would allow for a descriptive analysis of their online teaching experiences and the most effective approaches they implemented. Thus, the study is undertaken to determine the most effective practices that can be employed by educators to engage students and enhance the distance learning process in an art and design online environment. The findings suggested that the main challenges that are peculiar to art and design distance learning include difficulty in clearly seeing the value of the colors in a student’s artwork on screen and the unavailability of features that support art and design remote teaching in the currently available learning management systems.
Features of determination of native carbon in carbon-containing rocks on the analyzer of carbon and water
Authors: Feoktistov N. A. , Chernov V. Р. , Pivovarova К. G. , Ponamareva Т. В. , Mikhalkina I. V.
Published: July 2021

The largest deposits of graphite in the Russian Federation are located in the Middle and South Urals. However, several manifestations, e.g., «Opytnyi» sector, which have not yet been placed under production, require substantiation of the strategies for their integrated development, which, in turn, requires gaining the reliable data on the content of graphite in carbon-containing rocks. A method for simultaneous determination of organic and native carbon in carbon-containing rocks using an ELTRA CW MULTIPHASE carbon and water analyzer is proposed. The method is based on the combustion of organic carbon (coal, shale) in a stream of oxygen at 550°C and native carbon (graphite) in the temperature range 550 – 1000°C with subsequent IR-spectroscopic determination of the content of gaseous carbon dioxide. The interfering effect of magnesium carbonate and calcium carbonate on the determination of organic and native carbon was taken into account in the calculations. The carbonate content was determined using a separate sample in a nitrogen flow by decomposition of magnesium carbonate at 550°C and calcium carbonate within a temperature range of 550 – 1000°C. The content of chemically bound water in the composition of the minerals of carbon-containing rocks, was determined simultaneously with carbon. The only one type of carbon — graphite — was observed in the studied samples of the carbon-containing rock from «Opytnyi». The different combustion capacity of graphite was revealed: some of the crystals almost completely burn out at a temperature below 800°C and others above 800°C, which suggests the presence of cryptocrystalline and explicit crystalline graphite in the rocks. The developed method is rapid and corresponds in accuracy to the method for native carbon determination ±0.27 C % – 0.01 C % developed and approved by the Research Council for Analytical Methods of Research (NSAM).
Study of the properties for stabilized polyacrylonitrile thermally treated in air
Authors: Kozlov V. V. , Vasilev A. A. , Gorichev I. G. , Kalashnik A. Т. , Kostishin V. G. , Tabarov F. S. , Godaev В. S. , Sitnov М. A.
Published: July 2021

Developing of nanotechnology-based electronics entails developing of new carbon nanocrystalline materials with predetermined physicochemical properties, e.g., obtained by synthesis of polyacrylonitrile (PAN) in conditions of heat treatment. We have studied the properties of PAN heat-treated in air in the temperature range 150 – 250°C and the effect of stabilization on the kinetic parameters of synthesis and thermochemical properties of carbon material upon heat treatment in N2 atmosphere. It is shown that an increase in the temperature of a preliminary treatment up to 200°C leads to a decrease in the activation energy and pre-exponential factor compared to the corresponding values characteristic for the initial polymer (from 90.9 and 3.1 × 106 to 53.3 kJ/mol and 1.1 × 103 min–1, respectively), which indicates to the occurrence of diffusion limitations. When the temperature of a preliminary treatment in air increases from 180 to 250°C, the difference between temperature peaks for DSC and TGA curves decreases due to appearance of a «core-shell» structure. XRD data indicate that the initial PAN structure does not change up to 150°C. Further increase in the temperature leads to significant changes in the initial structure of the polymer which are manifested in a decrease in the peak area in the X-ray diffraction pattern of the polymer. The results obtained can be used in the development of a method for the synthesis of carbon materials with controlled properties predetermined at the stage of stabilization.
Study of the properties of materials under complicated conditions of low cycle deformation
Authors: Makhutov N. A. , Gadenin М. M. , Cherniavsky О. F. , Cherniavsky A. О.
Published: July 2021

Operational integrity of structures under complex combined modes of a loading depends on a significant number of combinations of operational parameters of thermomechanical impacts in part of loads, temperatures, duration, number of cycles, and deformation rates. The main laws governing the deformation of structural materials under complex loading are determined in conditions of combined standard, unified and special tests in laboratories. Using representative substantiations of physical and mechanical models for deformation diagrams in a wide range of loading conditions, taking into account the different scales of models, the structure of materials and the responsibility of structures, a stepwise consideration of the corresponding types of deformation is proposed: elastic, sign-variable flow, progressing accumulation of strains and their combination. At the same time, calculations of the structures can be carried out in the form of a hierarchical system in which each next level specifies the boundaries of permissible impacts towards expansion of the range of acting loadings, temperatures, rates and modes of deformation, which entails an increase in the bulk of the required initial data and complicates the calculations. The proposed methods of schematization of the physicomechanical properties and types of the equations of state for description of the deformation curves take into account the requirements of compactness of the initial data and the need of using both standard and unified methods for determining the characteristics of cyclic inelastic deformation and special methods as well. To describe the kinetics of deformation diagrams under aforementioned conditions both from the theoretical point of view and from the point of view of practical applications, power equations appeared most suitable; to reflect the role of the temperature factor exponential dependences should be used; whereas power dependences are useful to take into account time factors, strain rate, and conditions of two-frequency loading. The refined calculations at the higher and more complicated steps of the considered hierarchy providing the maximum possible use of the deformation and strength reserves of the materials and structures are to be based on the kinetic laws describing processes of low cycle deformation under complex modes of loading.
The influence of the technological cycle of production on the change in the physical and mechanical characteristics of bimetal with a butt welded joint in the cladding layer
Authors: Nonyak D. V. , Denisov I. V. , Pervukhina О. L.
Published: July 2021

The goal of the study is to consider the effect of explosion welding, heat treatment and cold straightening (gagging) in production of 09G2S + 08Kh13 bimetal with a butt welded joint in the cladding layer on the evolution of residual internal stresses. The impact of technological operations on the change in the level of residual stresses in a bimetallic material with a welded butt joint in the cladding layer was carried out using a non-destructive method of the magnetic memory of metals (MMM). This method is based on the use of the intrinsic stray magnetic field formed in the zones of increased dislocation density. The results revealed the special features of the location of zones with maximum values of the stress field gradient (dH/dx) and their evolution upon production of 09G2S + 08Kh13 bimetal with a butt welded joint in the cladding layer. An increase in the level of residual stresses in the cladding layer occurs after manual electric arc welding of 2 parts of the cladding layer made of 08Kh13 steel. It is shown that after explosion welding the level of residual stresses change. The stress relaxation occurs in the zone of weld in the cladding layer. At the same time, an increase in the level of residual stresses is observed in the main and cladding layer of the bimetal. To reduce the high level of residual stresses, we used the subsequent heat treatment of the obtained bimetallic samples in two different modes. The optimal heat treatment mode (heating to 720 ± 20°C, holding for 2 h, cooling with a furnace) which excluded the crack formation in the cladding layer upon mechanical straightening of bimetal was specified for 09G2S + 08Kh13 bimetal sample with a butt welded joint in the cladding layer.
Change of paradigms in applied statistics
Authors: Orlov A. I.
Published: July 2021

.
Ways to build text collections for training classifiers
Authors: Mulatov N. I. , Mokhov A. S. , Tolcheev V. О.
Published: July 2021

We report on solving the problem of forming a Russian-language text collection (dataset) consisting of bibliographic descriptions of scientific articles for training classifiers. Various approaches to creating such collections are considered. The expediency of using expert estimates for assigning class labels is assessed. The known datasets are analyzed, the requirements for the generated text array are formulated, and the choice of the subject area (Computer Science) is justified. We propose a technology of forming collection in conditions of the shortage of Russian-language articles. To do this we use automated translation of publications (bibliographic descriptions) from available English-language electronic libraries (ACM digital library, IEEE Xplore digital library, CiteSeerX) with additional expert quality control of the translation. The bibliographic collection thus formed was studied using methods of clustering (Latent Semantic Analysis) and visualization (Principal Component Analysis). Training and test samples were compiled and «standard» classifiers (K-Nearest Neighbor Method, Logistic Regression, Random Forest) were used. Then we calculated standard quality measures (accuracy, precision, recall). The rigid and soft classification were carried out. For rigid and soft classification all calculated measures (for the studied classifiers) ranged within [0.79; 0.87], and [0.91; 0.95], respectively. The experiments showed almost identical results for Russian and English bibliographic descriptions (the difference did not exceed 2%). The proposed method of forming text collections reduces the complexity of the labeling process compared to the expert approach, solves the problem of the lack of Russian-language documents, allows formation of sufficiently large balanced bibliographic datasets for training and testing classifiers.
Blue Round Small Cell tumor: A Surgical Update of DSRCT with review of literature ‘A Grim Affair’
Authors:   Department of General Surgery, Al Omran General Hospital, Al Hassa, Kingdom of Saudi Arabia
Published: July 2021

Desmoplastic small round cell tumor (DSRCT) is a tumor derived from the Greek desmos referring to knot and plasis to formation an uncommon soft tissue malignant tumor, mesenchymal in origin and aggressive with a prelidiction for males and advanced at presentation. It was first described as a distinct clinical entity by Gerald WL and Rosai J (7). There are fewer than 200 reported to date. Depending on the primary site of location the Clinical manifestations vary. As most arise from the abdomen and pelvis they remain asymptomatic till they attain a huge size. Other reported sites are the skull, thorax, and paratesticular region (10,13). We report the case of a 19 yr old male who had non specific abdominal discomfort with asthenia for a period of six months and was referred to us for evaluation of left supraclavicular nodes. The prognosis of Desmoplastic small round cell tumor (DSRCT) is poor with few surviving less than two years.
Et İşleme Tesislerinde Kullanılan Bıçak Sterilizatörünün Tasarımı Üzerine Deneysel Bir Çalışma
Authors: BASMACI Gültekin , BUTGÜL İbrahim
Published: July 2021

Et işleme tesislerinde iş hijyeni çok önemlidir. Bu nedenden dolayı kasapların her işlem öncesi ve sonrasında kesim bıçaklarını dezenfekte etmesi gerekmektedir. Bu çalışmada ani su ısıtıcısının, farklı güçteki alüminyum plakaya konumlanmış olan çubuk rezistanslar ve termostat kontrol sistemi ile suyu istenilen sıcaklığa en kısa sürede çıkarmak ve belirle bir sıcaklıkta sabit tutmak amaçlanmıştır. Enerjiyi doğru kullanarak ideal su sıcaklığını kullanım açısından en uygun noktaya çıkarmak hedeflenmiştir. Su sıcaklığının termostat yardımı ile kontrol altında tutulması için mekanizma kurulmuştur. Alüminyum plaka içine yerleştirilmiş çubuk rezistansların 1 kW, 1,5 kW ve 2 kW güçlerinde çalıştırarak deneysel sonuçlar elde edilmiştir. AISI 304 kalite paslanmaz gövdenin altına konumlandırılmış alüminyum plaka ısı transferinde taşınım yolu ile homojen bir şekilde suyu ısıttığı gözlenmiştir. Deneylerden elde edilen sonuçlar belirlenen parametreler göre karşılaştırılmıştır. Yapılan deneyler sonucunda 2 kW gücündeki çubuk rezistansın daha kısa sürede istenilen sıcaklığa ulaştığı gözlenmiştir.
Pengaruh Rasio Profitabilitas dan Rasio Likuiditas terhadap Peringkat Sukuk Korporasi Perusahaan Periode 2015-2018
Authors: Widyawati Ofi Maulidya , Nurhayati  , Nurcholisah Kania
Published: July 2021

Abstract. This study aims to determine the effect of profitability ratios and liquidity ratios on sukuk ratings for the 2015-2018 period. The sukuk rating of a company can be seen from the performance performed by the company. To measure the company's performance in this study using profitability ratios and liquidity ratios. Profitability ratio is a ratio to measure the efficiency of a company and the company's ability to generate profits. While the liquidity ratio is a ratio to measure the company's ability to meet its short-term obligations. This research is included in a quantitative descriptive study with companies listed on the Indonesia Stock Exchange (IDX) and sukuk rating agencies in Indonesia (PEFINDO) as populations. The analysis technique used in this study is multiple regression analysis. The results of this study are that profitability ratios and liquidity ratios have a simultaneous effect on sukuk ratings, profitability ratios affect sukuk ratings, and liquidity ratios affect sukuk ratings. This can be seen from the results of the t test which showed a sig value of 0.002 < 0.05 and 0.000 < 0.05.

Abstrak. Penelitian ini bertujuan untuk mengetahui pengaruh rasio profitabilitas dan rasio likuiditas terhadap peringkat sukuk tahun periode 2015-2018. Peringkat sukuk suatu perusahaan dapat dilihat dari kinerja yang dilakukan oleh perusahaan. Untuk mengukur kinerja perusahaan tersebut pada penelitian ini menggunakan rasio profitabilitas dan rasio likuiditas. Rasio profitabilitas adalah rasio untuk mengukur efisiensi perusahaan dan kemampuan perusahaan dalam menghasilkan laba. Sedangkan rasio likuiditas adalaha rasio untuk mengukur kemampuan perusahaan dalam memenuhi kewajiban jangka pendeknya. Penelitian ini termasuk dalam penelitian deskriptif verifikatif dengan pendekatan kuantitatif dengan perusahaan yang terdaftar dalam Bursa Efek Indonesia (BEI) dan lembaga pemeringkat sukuk di Indonesia (PEFINDO) sebagai populasi. Teknik analisis yang digunakan dalam penelitian ini adalah analisis regresi berganda. Hasil dari penelitian ini adalah bahwa rasio profitabilitas dan rasio likuiditas berpengaruh secara simultan terhadap peringkat sukuk, rasio profitabilitas berpengaruh terhadap peringkat sukuk, dan rasio likuiditas berpengaruh terhadap peringkat sukuk. Ini dapat terlihat dari hasil uji t yang memperlihatkan nilai sig sebesar 0,002 < 0,05 dan 0,000 < 0,05.
Analisis Penerapan Just In Time (JIT) dalam Meningkatkan Efesiensi Biaya Produksi
Authors: Purnamasari Meika , Nurleli  , Fitriah Epi
Published: July 2021

Abstract. Just In Time is a system designed to get good quality, get costs, and achieve time and cost as efficiently as possible by eliminating existing waste. This research was carried out in the Forging, Cast and Railroad Division of PT PINDAD (Persero) Bandung, aimed at understanding the timely application of production activities and analyzing the application of just in time to improve production cost efficiency. The method of data collection is done by observing the collected objects. The data analysis technique used is a qualitative descriptive analysis technique. The results of this study indicate that the purchasing system implemented in 2013 is still ineffective, because it still uses a system that uses traditional methods that cause waste of costs and storage space. The company PT PINDAD (Persero) Bandung after implementing a timely production system on one of the products, entered into an agreement with the supplier regarding the quality, quantity, and time of delivery of raw materials by making an agreement with a supplier of the company to minimize production costs. In conducting production activities, the company gets 93.11%  and efficiency levels increase by 5% so that these activities can be said to be efficient.

Abstrak. Just In Time adalah suatu sistem yang dirancang untuk mendapatkan kualitas yang baik, menekan biaya, dan mencapai waktu dan biaya seefisien mungkin dengan menghilangkan pemborosan yang ada. Penelitian ini dilakukan di Divisi Tempa, Cor dan Alat Perkeretaapian PT PINDAD (Persero) Bandung, bertujuan untuk mengetahui penerapan Just In Time dalam aktivitas produksi serta menganalisis penerapan Just In Time dalam meningkatkan efisiensi biaya produksi. Metode pengumpulan data dilakukan dengan melakukan observasi pada objek yang diteliti. Teknik analisis data yang digunakan adalah teknik analisis secara deskriptif kualitatif. Hasil penelitian ini menunjukkan bahwa sistem pembelian secara tradisional yang diterapkan pada tahun 2013 masih belum efektif, karena masih menggunakan sistem secara pendekatan tradisonal yang menyebabkan pemborosan biaya dan ruang penyimpanan. Perusahaan PT PINDAD (Persero) Bandung setelah menerapkan sistem produksi secara Just In Time pada salah satu produk, mengadakan kesepakatan dengan pemasok mengenai kualitas, jumlah, dan waktu pengiriman bahan baku dengan adanya kesepakatan dengan pemasok perusahaan dapat meminimalisir biaya produksi. Dalam melakukan aktivitas produksi, perusahaan mendapatkan aktivitas nilai tamba sebesar 93,11% dan tingkat efisiensi meningkat sebesar 5%  sehingga aktifitas tersebut dapat dikatakan efisien.
Analisis Kinerja Keuangan dan Biaya Operasional pada Perusahaan Financial Technology
Authors: Febryanti Syelpia , Fadilah Sri , Nurcholisah Kania
Published: July 2021

Abstract. The purposes of this study is to analyze financial performance and operating expenses company of fintech is a PT Kioson Komersial Tbk. from 2017 and 2018. The data used secondary data from financial statements and annual report. The research method used is descriptive qualitative. Result of the analysis are generally based on financial ratio of a liquidity ratio is in good shape is a cash turnover and inventory net working capital. Solvency ratio which is in good condition just ratio long term debt to equity ratio, while other ratios are not good is debt ratio, debt to equity ratio, and times interest earned. For activity ratio in a good condition are inventory turnover, total assets turnover, fixed assets turnover, while working capital turnover still below the industry standard. profit margin, roi, roe, except earning per share, because there is no general standard for eps. For the result of operating espenses, costs or operating expenses can affect the decrease of profit.

Abstrak. Penelitian ini ditujukan untuk menganalisis kinerja keuangan dan biaya operasional pada perusahaan Financial technology yaitu PT Kioson Komersial Tbk. pada periode tahun 2017 dan 2018. Data yang digunakan adalah data sekunder yang bersumber dari laporan keuangan dan annual report. Metode penelitian yang digunakan adalah kualitatif deskriptif. Hasil analisis secara umum berdasarkan rasio keuangan yaitu rasio likuiditas dalam keadaan baik rasio perputaran kas dan inventory net working capital. Rasio solvabilitas yang dikatakan baik hanya rasio long term debt to equity ratio, sedangkan sisanya dikatakan tidak baik seperti rasio utang, debt to equity ratio, dan times interest earned. Untuk rasio aktivitas yang baik adalah perputaran persediaan, perputaran total aktiva, dan perputaran aktiva tetap, sedangkan perputaran modal kerja masih berada di bawah standar industri. Selanjutnya rasio profitabilitas semuanya masih berada di bawah standar industri seperti rasio gross profit margin, net profit margin, roi, roe, kecuali earning per share, karena tidak ada standar yang menentukan besaran earning per share. Untuk hasil analisis biaya operasional, biaya-biaya atau beban usaha yang meningkat dapat memengaruhi laba menjadi turun.
Pengaruh Akuntansi Dana Desa dan Partisipasi Masyarakat terhadap Pengelolaan Dana Desa
Authors: Pratiwi Yustin Novia , Fadilah Sri , Nurcholisah Kania
Published: July 2021

Abstract. Today village funds are one of the topics being discussed hotly, in their implementation of the many deviations of priority development funds carried out because they increase understanding of village funds and increase community participation in village fund management. This research was made with the aim to study the effect of village funds and community participation on village fund management. The test tool in this study is a simple and multiple linear regression analysis using SPSS software. This research uses quantitative methods using surveys. In this study, the technique used in collecting data consisted of 62 questionnaires distributed by 62 people to villages and village communities in the area of West Bandung Regency. The results show that the village financial statements have gone well against the system, community participation has gone well and involves accounting of village funds and community participation in the management of village funds.

Abstrak. Dewasa ini dana desa adalah salah satu topik yang sedang hangat dibicarakan, pada pelaksanaanya seringkali banyak penyimpangan dana maupun prioritas pelaksanaan pembangunan yang terjadi karena kurangnya pemahaman atas akuntansi dana desa dan kurangnya partisipasi masyarkat dalam pengelolaan dana desa. Penelitian ini dibuat dengan tujuan untuk mengetahui pengaruh akuntansi dana desa dan partisipasi masyarakat terhadap pengelolaan dana desa . Alat uji dalam penelitian ini ialah analisis regresi linier sederhana dan berganda dengan menggunakan software SPSS. Penelitian ini menggunakan metode kuantitatif dengan pendekatan survey . Dalam penelitian ini, teknik yang digunakan dalam pengumpulan data berupa kuisioner yang disebarkan sebanyak 62 kepada para aparatur desa dan masyarakat desa di wilayah Kabupaten Bandung Barat . Hasil penelitian menunjukan bahwa pada umumnya akuntansi dana desa sudah berjalan dengan baik disertai dengan sistemnya, partisipasi masyarakat sudah berjalan dengan baik dan terdapat pengaruh akuntansi dana desa dan partisipasi masyarakat terhadap pengelolaan dana desa.
Uji Efektivitas Ekstrak Etanol Daun Angsana (Pterocarpus Indicus Willd) sebagai Biolarvasida terhadap Larva Nyamuk Culex Sp.
Authors: Abdurrozak Mohammad Ihsan , Syafnir Livia , Sadiyah Esti Rachmawati
Published: July 2021

Abstract. Mosquitoes are often associated with health problems because mosquito bites not only cause itching but some species can also transmit various types of parasites that are harmful to human health. One of them is Culex sp mosquito which is a class of infectious insects (vectors). This study aimed to test the activity of compounds in angsana leaf extract (Pterocarpus indicus Willd) as biolarvasides on Culex sp. mosquitoes and determine the concentration of LC50 value needed. Extraction was carried out by maceration method using 70% ethanol solvent. The extract collected was then tested biolarvaside activity on Culex sp. The study subjects were divided into 8 treatment groups, namely aquades (negative control), 0.05%, 0.1%, 0.2%, 0.5%, 1%, 2% and ABATE 0.1% (positive control). Each group contained 20 mosquito larvae with three replications (triplo). Observations were made for 24 hours at intervals of 1 hour, 4 hours, 8 hours, 12 hours and 24 hours. The biolarvaside activity of angsana leaf extract was analyzed using the probit method. Based on the results of the Probit analysis, the LC50 value was 0.83%. These results indicate that the angsana leaf extract (Pterocarpus indicus Willd) was effective as a biolarvaside.

Abstrak. Nyamuk sering dikaitkan dengan masalah kesehatan karena gigitan nyamuk tidak hanya menimbulkan gatal saja tetapi beberapa spesies nyamuk juga dapat menularkan berbagai jenis parasit yang berbahaya bagi kesehatan manusia. Salah satunya yaitu nyamuk Culex sp yang merupakan golongan serangga penular (vektor). Penelitian ini bertujuan untuk pengujian aktivitas senyawa dalam ekstrak daun angsana (Pterocarpus indicus Willd) sebagai biolarvasida pada nyamuk Culex sp dan penentuan nilai LC50. Ekstraksi dilakukan dengan metode maserasi menggunakan pelarut etanol 70%, Ekstrak yang diperoleh kemudian diuji aktivitas biolarvasida pada nyamuk Culex sp. Subjek penelitian dibagi menjadi 8 kelompok perlakuan, yaitu akuades (kontrol negatif), 0,05%, 0,1%, 0,2%, 0,5%, 1%, 2% dan ABATE 0,1% (kontrol positif).Setiap kelompok berisi 20 ekor larva nyamuk dengan tiga kali pengulangan (triplo) . Pengamatan dilakukan selama 24 jam dengan interval 1jam, 4jam, 8jam, 12jam dan 24jam. Aktivitas biolarvasida ekstrak daun angsana dianalisis dengan menggunakan metode probit. Berdasarkan hasil analisis Probit didapatkan nilai LC50 berada pada konsentrasi 0,83%.Hasil tersebut menunjukkan bahwa Ekstrak daun angsana (Pterocarpus indicus Willd) efektif sebagai biolarvasida.
Formulasi Sediaan Cuka Buah Kopi Menggunakan Ragi (Saccharomyces cerevisiae) dan Bakteri (Acetobacter aceti)
Authors: R Fathan Said , Darma Gita Cahya Eka , Kodir Reza Abdul
Published: July 2021

Abstract. Indonesia is the third largest coffee producing country in the world, with a variety of compounds that are beneficial to the body. Vinegar fermentation is one way to add value to the benefits of fruits and vegetables because it can form useful new chemical compounds. Vinegar has a variety of benefits that have been studied such as reducing hyperglycemia, hyperinsulinemia, hyperlipidemia and obesity. Previous research in 2013 had made acetic acid from Arabica coffee pulp waste. This study aims to obtain a coffee fruit vinegar formula that conforms to the quality standards of acetic acid SNI 01-4371-1996. The material used is whole coffee with a two-stage fermentation method, namely alcohol fermentation using S. cerevisiae for 4 days and vinegar fermentation using A. aceti for 3 days. The results showed that the formula with 25% coffee fruit and 20% sugar is the best formula compared to other formulas with organoleptic test results in brown, sour and sweet taste and a little distinctive aroma of coffee, 5.03% acetic acid content, 0% alcohol content, pH 3,242.

Abstrak. Indonesia merupakan negara ketiga penghasil kopi terbesar di dunia, dengan berbagai kandungan senyawa yang bermanfaat bagi tubuh. Fermentasi cuka merupakan salah satu cara untuk menambah nilai manfaat dari buah dan sayur karena dapat membentuk senyawa kimia baru yang bermanfaat. Cuka memiliki berbagai manfaat yang telah diteliti seperti menurunkan hiperglikemia, hiperinsulinemia, hiperlipidemia dan obesitas. Penelitian sebelumnya pada tahun 2013 telah dilakukan pembuatan asam asetat dari limbah cair kulit kopi arabika. Penelitian ini bertujuan untuk mendapatkan formula cuka buah kopi yang sesuai standar mutu asam asetat SNI 01-4371-1996. Bahan yang digunakan adalah buah kopi secara utuh dengan metode fermentasi dua tahap yaitu fermentasi alkohol menggunakan S. cerevisiae selama 4 hari dan fermentasi cuka menggunakan         A. aceti selama 3 hari. Hasil penelitian menunjukan bahwa formula dengan 25% buah kopi dan 20% gula merupakan formula terbaik dibandingkan dengan formula lain dengan hasil uji organoleptis berwarna coklat, rasa asam dan manis serta sedikit aroma khas kopi, kadar asam asetat 5,053%, kadar alkohol 0%, pH 3,242.
Permintaan Wisata Kelompok Pemuda ke Kota Bandung
Authors: Ayu Julida Yanti  , Sundaya Yuhka , Haviz Meidy
Published: July 2021

Abstract. This paper presents the results of research on tourist demands to the city of Bandung. The research objective is to study the demand function of tourists in the city of Bandung. Looking at the qualitative nature of tourism demand, this study examines it through the ordered logit model. Data obtained mainly from tourists visiting the city of Bandung. The estimation model repeatedly shows five factors that explain tourism demand, namely income, travel distance, leisure time owned by tourists, vehicles used to visit the city of Bandung, and the level of congestion in the city of Bandung. The biggest model coefficient is the comfort variable. Increasing leisure time one day will increase the chances of frequent categories of visits to the city of Bandung, 24,278 times greater than other categories. Klasifikasi JEL  :  Q21, Z23, C19

 

Abstrak. Makalah ini menyajikan hasil penelitian skripsi tentang permintaan wisatawan ke Kota Bandung. Tujuan penelitiannya adalah untuk mempelajari fungsi permintaan wisatawan di Kota Bandung. Melihat sifat kualitatif dari permintaan pariwisata, penelitian ini mengkajinya melalui model logit yang dipesan. Data diperoleh terutama dari wisatawan yang mengunjungi Kota Bandung. Model hasil estimasi berulang kali menunjukkan lima faktor yang menjelaskan permintaan pariwisata, yaitu pendapatan, jarak perjalanan wisata, waktu luang yang dimiliki oleh wisatawan, kendaraan yang digunakan untuk mengunjungi Kota Bandung, dan tingkat kemacetan di Kota Bandung. Koefisien model terbesar adalah variabel waktu luang. Menambah waktu luang suatu hari, akan memperbesar peluang kategori sering berkunjung ke Kota Bandung, 24.278 kali lebih besar dari kategori lainnya. Klasifikasi JEL  :  Q21, Z23, C19
Komodifikasi Kritik Sosial dalam Film Sexy Killers
Authors: Helsa Dhyanti Mustika  , Kurnia Septiawan Santara
Published: July 2021

Abstract. The mass media is one source of information that is currently used easily by the public. With the development of communication technology today, people can easily access all information. Researchers used qualitative research methods. This research uses Theo Van Leeuwen's Critical Discourse Analysis. The results of the study carried out by these shows that the marginalization in the Sexy Killers movie dialogue text indicated that the marginalized groups in this study were farmers and surrounding communities living in areas near coal excavations and the construction of a power plant. The discourse of exclusion which includes passivation, nomination and substitution of clauses is contained in the text of the dialogue. While the discourse of exclusion with 7 categories also exists in this study except assimilation-individualization. While the discourse of social criticism in this study arises because of the dialogue from the surrounding community deliberately raised by researchers. The results of this study that the discourse of exclusion and inclusion as well as the discourse of social criticism in the film Sexy Killers successfully raised by the filmmaker. The result is readers and the audience who watch the film know how the actual conditions occur, as well as the impact on the surrounding community.

Abstrak. Media massa merupakan salah satu sumber informasi yang saat ini digunakan secara mudah oleh masyarakat. Dengan berkembangnya teknologi komunikasi saat ini, masyarakat dapat dengan mudah mengakses segala informasi. Peneliti menggunakan metode penelitian kualitatis. Penelitian ini menggunakan Analisis wacana Kritis milik Theo Van Leeuwen. Hasil penelitian yang dilakukan oleh tersebut menunjukan bahwa pemarjinalan dalam teks dialog film Sexy Killers tersebut tertera kelompok yang termarjinalkan dalam penelitian ini adalah para petani dan masyarakat sekitar yang tinggal di daerah dekat penggalian batu bara dan pembangunan PLTU. Wacana eksklusi yang meliputi pasivasi, nominalisasi, dan penggantian anak kalimat terdapat dalam teks dialog tersebut. Sementara wacana eksklusi dengan 7 kategori terdapat pula dalam penelitian ini kecuali asimilasi-individualisasi. Sementara wacana kritik social dalam penelitian ini muncul karena adanya dialog dari masyarakat sekitar yang sengaja dimunculkan oleh peneliti. Hasil dari penelitian ini bahwa wacana eksklusi dan inklusi juga wacana kritik social dalam film Sexy Killers berhasil dimunculkan oleh pembuat film tersebut. Hasilnya pembaca dan khalayak yang menonton film tersebut mengetahui bagaimana kondisi yang sebenarnya terjadi, juga dampak bagi masyarakat sekitarnya.
Gambaran Status Gizi pada Balita di Puskesmas Karang Harja Bekasi Tahun 2019
Authors: Putri Nurshifa Eka , Andarini Mia Yasmina , Achmad Sadiah
Published: July 2021

Abstract. Humans, especially toddlers, need good nutritional status. Nutritional status is the state of the body due to food consumption and use of nutrients, which is defined as the balance of energy that is entered and released by the body. The health profile of Bekasi Regency in 2017 shows that there are 3.88% of children under five with malnutrition status and 0.04% with malnutrition status. And 2.91% of children under five with more nutrition. This study aims to determine the nutritional status of children under five at Puskesmas Karang Harja Bekasi in 2019. This study uses a descriptive research method with a cross sectional design that measures variables as well as to determine the nutritional status of children. Sampling of this research is a total sampling technique from recording data reporting months of weighing toddlers aged 12-60 months at Puskesmas Karang Harja Bekasi in 2019. This research was conducted from September to December 2020. The results of this study indicate that children under five at Puskesmas Karang Harja Bekasi in 2019 as many as 902 people, 771 people with good nutrition (85.5.3%), 62 people (7.9%) with good nutrition, 59 people (6.5%)% malnutrition and ten people (1.1%) ) malnutrition. This study concluded that the nutritional status of children under five was mostly good. However, there are still children with low nutritional status, so it should be noted that there are still many malnourished children under five in Indonesia.

Abstrak. Manusia khususnya balita membutuhkan status gizi yang baik. Status gizi adalah keadaan tubuh sebagai akibat dari konsumsi makanan dan penggunaan gizi, yang didefinisikan sebagai keseimbangan energi yang masuk dan dilepaskan oleh tubuh. Profil kesehatan Kabupaten Bekasi tahun 2017 menunjukkan terdapat 3,88% balita dengan status gizi buruk dan 0,04% dengan status gizi buruk. Dan 2,91% balita dengan gizi lebih. Penelitian ini bertujuan untuk mengetahui status gizi balita di Puskesmas Karang Harja Bekasi tahun 2019. Penelitian ini menggunakan metode penelitian deskriptif dengan desain cross sectional yang mengukur variabel dan untuk mengetahui status gizi balita. Pengambilan sampel dalam penelitian ini adalah teknik total sampling dari pencatatan data pelaporan bulan penimbangan balita usia 12-60 bulan di Puskesmas Karang Harja Bekasi tahun 2019. Penelitian ini dilakukan pada bulan September hingga Desember 2020. Hasil penelitian ini menunjukkan bahwa balita di Puskesmas Karang Harja Bekasi tahun 2019 sebanyak 902 orang, gizi baik 771 orang (85.5,3%), gizi baik 62 orang (7,9%), gizi baik 59 orang (6,5%)% dan gizi buruk sepuluh orang ( 1,1%)) malnutrisi. Studi ini menyimpulkan bahwa status gizi balita sebagian besar baik. Namun demikian, masih terdapat balita dengan status gizi rendah, sehingga perlu diperhatikan bahwa masih banyak balita gizi buruk di Indonesia.
Prediksi Harga Saham Perusahaan Operator Telekomunikasi Selular pada Masa Pandemi Menggunakan Metode Binomial
Authors: Ferliana  , Ramdani Yani , Permanasari Yurika
Published: July 2021

Abstract. The corona virus causes all activities to be carried out online so that all activities require Internet access which makes mobile telecommunications operator companies one of the promising investments in this pandemic. Stock investing allows investors to get profits in a relatively short time. Investments in stocks are currently unstable, as the whole world has been in difficult times since the coronavirus. Capital market players can feel the loss, which causes share prices to tend to decline. The impact of the corona virus is to paralyze all areas, especially the economy, so that an investor must be able to predict an increase or decrease in stock prices. The binomial method helps investors to predict the possibility of a stock price that will occur and is clarified by using a binomial tree that can be predicted in the form of stock prices by having the possibility of four predictions, two predictions describing an increase in shares and two other predictions describing the possibility of a falling stock price.

Abstrak. Virus korona menyebabkan semua kegiatan dilakukan melalui daring (online) sehingga semua kegiatan memerlukan akses Internet yang membuat perusahaan operator telekomunikasi seluler menjadi salah satu investasi yang menjanjikan dimasa pandemi ini Investasi ialah komitmen menempatkan sejumlah dana dalam waktu yang cukup lama untuk memperoleh keuntungan di masa datang. Investasi saham memungkinkan investor mendapatkan keuntungan  dalam waktu yang relatif singkat. Investasi dalam bentuk saham pada saat ini tidaklah stabil, karena seluruh dunia dalam masa sulit semenjak adanya virus korona. Kerugianpun dapat dirasakan oleh pelaku pasar modal yang menyebabkan harga saham cenderung menurun. Dampak virus korona adalah melumpuhkan segala bidang terutama perekonomian sehingga sebagai seorang investor harus bisa memprediksi peningkatan atau penurunan harga saham. Metode binomial membantu investor untuk memprediksi kemungkinan harga saham yang akan terjadi dan diperjelas dengan menggunakan pohon binomial hasil prediksi yang di dapat berupa harga saham dengan memiliki kemungkinan empat prediksi dua prediksi menggambarkan kenaikan saham dan dua prediksi lain menggambarkan kemungkinan harga saham turun.
Analisis Pemeliharaan Mesin Conveyor Menggunakan Metode Preventive dan Breakdown Maintenance untuk Meminimumkan Biaya Pemeliharaan Mesin pada PT X
Authors: Meli Amelia  , Aspiranti Tasya
Published: July 2021

Abstract. This research aims to know how the implementation of maintenance conducted by PT X and how maintenance by PT X used the preventive and breakdown maintenance methods to minimize engine maintenance cost. The research method used in this study is care study whereas this type of research is quantitative descriptive research. Technique of collecting data in this research by obsererving, interviewing and collecting documents related to research. Data analysis used by using preventive and breakdown maintenance methods. The result of this research is PT X performs maintenance of the engine by using preventive maintenance such as routine maintenance, semi-overhaul forecast maintenance and annual maintenance and breakdown maintenance are usually performed when the machine is fully damaged or dead. PT X should implement preventive maintenance because it is more efficient at 13,2% than the company’s maintenance.

Abstrak. Penelitian ini bertujuan untuk mengetahui bagaimana pelaksanaan pemeliharaan mesin yang dilakukan PT X dan bagaimana pemeliharaan mesin yang yang dilakukan PT X dengan menggunakan metode preventive dan breakdown maintenance untuk meminimumkan biaya pemeliharaan mesin. Metode penelitian yang dilakukan dalam penelitian ini studi kasus sedangkan jenis penelitian ini adalah penelitian deskriptif kuantitatif. Teknik pengumpulan data dalam penelitian ini dengan melakukan observasi, wawancara dan pengumpulan dokumen-dokumen yang berkaitan dengan penelitian. Analisis data yang digunakan dengan menggunakan metode preventive dan breakdown maintenance. Hasil dari penelitian ini adalah PT X hendaknya melakukan pemeliharaan mesin dengan menggunakan preventive maintenance seperti perawatan rutin, perawatan semi overhaul dan perawatan tahunan dan breakdown maintenance biasa dilakukan saat mesin mengalami kerusakan atau mati total. PT X hendaknya melaksanakan preventive maintenance karena lebih efisien sebesar 13,2% dibandingkan pemeliharaan yang dilakukan perusahaan.
Pengaruh Karakteristik Individu dan Kompensasi terhadap Turnover Intention
Authors: Ratih Prameswari Wulan Asih
Published: July 2021

Abstract. This study aims to determine the Individual Characteristics and Compensation for Turnover Intention at the Perisai Husada Main Clinic. This research is categorized as descriptive and verification research as a quantitative approach with an instrument in the form of a questionnaire. The sampling technique in this study used saturated samples because all 55 employees of the Perisai Husada Main Clinic were made into the population. Data collection using questionnaires and interviews. Test the validity of the instrument using Pearson's product moment while the reliability test with the Alpha cronbanch with the help of SPSS 25. 0 Measuring instruments prove to be valid and reliable for research instruments. Hypothesis testing of this study uses multiple linear regression analysis. The results of the study prove that: (1) Individual characteristics significantly positive effect on Turnover Intention with a value of β = 0.394 and sig = 0,000, the contribution of individual characteristics to Turnover Intention 0.434 = 43.4%; (2) Compensation has a positive effect on Turnover Intention with a value of β = 0.530 and sig 0,000, contribution of Compensation to Turnover Intention 0.569 = 56.9%; (3) Individual Characteristics and Compensation have a significant positive effect on Turnover Intention with a result of R² = 0.622. This means that Individual Characteristics and Compensation is 62.2% while the remaining 27.8% is influenced by other variables outside the variables studied.

Abstrak. Penelitian ini bertujuan untuk mengetahui Karakteristik Individu dan Kompensasi terhadap Turnover Intention pada Klinik Utama Perisai Husada. Penelitian ini di kategorikan sebagai penelitian deskriptif dan verikatif sebagai pendekatan kuantitatif dengan instrument berupa kuesioner. Teknik pengambilan sampel dalam penelitian ini menggunakan sampel jenuh karena seluruh karyawan Klinik Utama Perisai Husada sebanyak 55 orang dijadikan populasi. Pengumpulan data menggunakan kuesioner dan wawancara. Uji validitas instrumen dengan menggunakan product moment pearson sedangkan uji reliabilitas dengan cronbanch Alpha dengan bantuan SPSS 25. 0 Alat ukur terbukti valid dan reliabel untuk instrument penelitian. Uji hipotesis penelitian ini menggunakan analisis regresi linear berganda. Hasil penelitian membuktikan bahwa: (1) Karakteristik Individu berpengaruh positif signifikan terhadap Turnover Intention dengan nilai β= 0,394 dan sig = 0,000, kontribusi karakteristik individu terhadap Turnover Intention 0,434 = 43,4%; (2) Kompensasi berpengaruh positif terhadap Turnover Intention dengan nilai β=0,530 dan sig 0,000, kontribusi Kompensasi terhadap Turnover Intention 0,569 = 56,9%; (3) Karakteristik Individu dan Kompensasi berpengaruh positif signifikan terhadap Turnover Intention dengan hasil R² = 0,622. Hal ini berarti Karakteristik Individu dan Kompensasi 62,2% sedangkan sisanya 27,8% dipengaruhi oleh variabel lain di luar variabel yang diteliti.