bluuebunny/crossref_metadata_2025 huggingface dataset:
Penerapan Teknik Gerakan Isyarat dalam Menghafal Al-Qur’an pada Pembelajaran Pendidikan Agama Islam
Authors: Kurniasary Rahmiy , Ibrahim Duski , Mukmin Mukmin
Published: January 2023

Penelitian ini bertujuan untuk mendeskripsikan penerapan teknik gerakan isyarat dalam menghafal ayat Al-Qur’an dan faktor pendukung serta penghambat dari penerapan teknik gerakan isyarat dalam menghafal ayat Al-Qur’an pada pembelajaran Pendidikan Agama Islam. Penelitian ini menggunakan jenis penelitian deskriptif dengan pendekatan kualitatif. Sedangkan teknik pengumpulan data yaitu, observasi, wawancara, dokumentasi dan triangulasi data. Adapun teknik analisis data yang digunakan, menurut Miles dan Huberman dilakukan secara interaktif melalui proses reduction, display data dan verification. Hasil penelitian yang dilakukan peneliti yaitu, 1) Kegiatan menghafal dengan cara mengasyikkan mendukung penerapan teknik gerakan isyarat agar peserta didik mampu menghafal dengan baik kaerna terdapat semangat belajar yang tinggi dan antusiasnya, peserta didik dapat menyalurkan kreativitas dari kecerdasan otaknya Kegiatan menghafal dengan cara mengasyikkan sangatlah mendukung pembelajaran menghafal Al-Qur’an pada pelajaran Pendidikan Agama Islam, karena teknik gerakan isyarat tidak hanya mengajarkan peserta didik untuk hafal ayat melainkan dapat memahami makna ayat dalam bentuk kegiatan menghafal dengan cara yang mengasyikkan. 2) Faktor pendukung dalam penerapan teknik isyarat tangan dalam menghafal ayat pada pembelajaran Pendidikan Agama Islam berupa faktor internal yaitu dari tingkat kemauan dan kemampuan dalam menghafal. Sedangkan faktor eksternal yaitu dari segi penggunaan media, keterampilan guru dan suasana pembelajaran menghafal dan mengartikan ayat yang menyenangkan sehingga meningkatkan antusias peserta didik. Faktor penghambat penerapan teknik gerakan isyarat dalam pembelajaran mengahafal ayat ialah tingkat komunikasi peserta didik yang berbeda-beda. Kemudian waktu yang dibutuhkan oleh setiap peserta didik berbeda-beda, keterampilan dalam membuat gerakan isyarat tangan dan sinkronisasi antara pengucapan ayat dengan gerakan tangan yang kurang tepat pada beberapa peserta didik.
Implementasi Nilai-nilai Pancasila dalam Mata Pelajaran Pendidikan Agama Islam dan Budi Pekerti
Authors: Jamil Syeh Ahmad , Waspodo Waspodo , Mardeli Mardeli
Published: January 2023

Tujuan dalam penelitian ini untuk menganalisis implementasi nilai-nilai pancasila dalam mata pelajaran pendidikan agama Islam dan budi pekerti di SMA Negeri 1 Ogan Ilir. Jenis penelitian yang digunakan dalam penelitian ini adalah penelitian lapangan atau field reseach. Pendekatan penelitian yang digunakan penulis dalam penelitian ini adalah pendekatan kualitatif. Subjek dalam penelitian ini adalah kepala sekolah, guru-guru pendidikan agama Islam dan budi pekerti, dan siswa-siswa di SMA Negeri 1 Ogan Ilir. Adapun teknik pengumpulan data yang digunakan dalam penelitian ini yaitu observasi dan wawancara. Selanjutnya data-data yang sudah terkumpul dianalisis dengan menerapkan model dari Miles dan Huberman, yaitu data reduction, data display, serta conclusion drawing/verification. Hasil yang diperoleh yaitu implementasi nilai-nilai pancasila dalam mata pelajaran pendidikan agama Islam dan budi pekerti terlihat pada: 1) sila pertama, memulai dan mengakhiri pelajaran dengan berdo’a, membiasakan diri untuk sholat di masjid dan tidak meninggalkan sholat, memperingati hari besar Islam, memberikan salam kepada guru maupun siswa, tidak memaksa siswa non muslim untuk mengikuti pelajaran PAI, dan rukun serta menjaga toleransi. 2) sila kedua, membudayakan 5S, memperlakukan guru dan siswa dengan adil, mencontohkan dan mengajak siswa untuk beradab (sopan dan santun), saling menghormati dan saling membantu, dan rutin melaksanakan kegiatan sosial dan kemanusiaan. 3) sila ketiga, mengajak para guru dan para siswa untuk menjaga persatuan, tidak bermusuhan, dan menjaga kebersihan kelas sebelum dan sesudah pembelajaran dengan gotong royong. 4) sila keempat, memberikan kesempatan yang sama kepada siswa untuk bertanya dan berpendapat, bermusyawarah ketika terdapat perbedaan pendapat, meluruskan pendapat siswa yang salah atau belum tepat, terdapat struktur sekolah dan struktur kelas dan terdapat OSIS beserta program-programnya. 5) sila kelima, memberikan perlakuan yang sama dan adil, menanamkan rasa kepedulian sosial terhadap sesama, mengajarkan untuk berteman dengan siapapun dan saling berbagi.
Pengaruh Penggunaan Media Balok Angka Terhadap Perkembangan Kognitif Pada Anak Usia 4-5 Tahun
Authors: Putri Yecha Febrieanitha , Marlina Leny , Wulandari Yulike Tri
Published: January 2023

Perkembangan kognitif salah satu aspek perkembangan yang berperan penting dalam pendidikan anak usia dini. Adapun yang menjadi permasalahan peneliti adalah kemampuan kognitif anak belum optimal dalam menyebutkan angka 1-10 saat ditunjuk lambang bilangannya. Penelitian ini bertujuan untuk mendeskripisikan pengaruh penggunaan media balok angka terhadap perkembangan kognitif anak usia 4-5 tahun di RA Perwanida 2 Palembang. Peneliti menggunakan pendekatan kuantitatif dengan jenis penelitian kelas eksperimen. Dalam penelitian ini menggunakan metode observasi, tes dan dokumentasi, desain penelitian yang digunakan dalam penelitian ini ialah “one group pretest posttest design”. Teknik pengumpulan data menggunakan teknik observasi partisipasi, teknik tes dan teknik dokumentasi. Teknik analisis data yang digunakan dalam penelitian ini ialah uji validasi, uji realibilitasi, uji normalitas uji homogenitas, serta uji hipotesis. Adapun hasil penelitian bahwa ada perbedaan sebelum dan setelah menggunakan media balok angka anak sudah mampu menyebutkan angka 1-10, mengurutkan angka 1-10. Dengan menggunakan media balok angka dapat memudahkan anak dalam proses pembelajaran mengenal angka.
Persepsi Pengguna Terhadap Aplikasi Perpusda Wonosobo Di Dinas Kearsipan Dan Perpustakaan Daerah Kabupaten Wonosobo Dengan Pendekatan Pieces Framework
Authors: Anggraeni Vira , Masruri Anis
Published: January 2023

The purpose of this research is to determine the user's perceptions for the Wonosobo Library applications at the regional archives and libraries office of Wonosobo Regency with the PIECES framework approach. This research is included as descriptive quantitative research. The subjects in this research were active members of the Wonosobo Library application. The object of this research is the user's perception for the Wonosobo library application of the regional archives and libraries office of Wonosobo Regency. The sample obtained from the calculation with the Slovin formula are 100 respondents. Meanwhile, the sampling technique used is incidental sampling. This research has a single variable, namely the user's perception of Wonoosobo Library applications. This research instrument uses the PIECES framework, namely performance, information, economic, control, efficiency, and service. The scale used in this research is a Likert scale with 4 answer options. The data collection techniques in this study used 4 ways, namely questionnaires, observations, interviews, and documentations. The data analysis of this research used the mean and grand mean formulas. The results showed that the overall calculation of the sub-variables showed value of 3.07 which is on the scale range was included as a good category. The lowest sub-variable value is at 3.00 in the performance sub-variable which is included as a good category. The highest percentage of indicators shows the number 3.15 in the sub-variable economy (economic) which is included as a good category.
Analisis Penerapan Preservasi Kuratif terhadap Bahan Pustaka di Perpustakaan Museum Konferensi Asia Afrika
Authors: Indah Rosiana Nurwa , Fahriansyah Muhammad Aldy
Published: January 2023

Penelitian ini bertujuan untuk mengetahui pelaksanaan prervasi kuratif di Perpustakaan Museum Konferensi Asia Afrika. Metode penelitian yang digunakan adalah metode penelitian kualitatif deskriptif. Pendekatan yang dipakai dalam penelitian ini menggunakan pendekatan kualitatif deskriptif. Pengumpulan data melalui observasi, wawancara dan dokumentasi. Hasil penelitian menunjukkan bahwa pelaksanaan preservasi kuratif yang dilakukan melalui laminasi dan penjilidan. Adapun kendala yang dihadapi dalam penerapan preservasi kuratif adalah sarana dan prasarana, sumber daya manusia dan mayoritas koleksi termasuk warisan dunia.
Reinterpretasi Pengembangan Koleksi (Analisis Wacana Kritis The Storied Life Of A.J. Fikry)
Authors: Putri Ina Kencana
Published: January 2023

This research disscus about reinterpretation collection development at a small bookstore on the novel that tittled ‘The Storied Life of A.J. Fikry’. This research aim to alaliyze how reinterpretation in a collection development at bookstore using mimetic approach and critical discourse analysis. This novel represent back and forth plot in some chapter, but the hop of time form right now and past are not really explained. From the research was obtenied some social aspect one of them was the character of A.J. Fikry, which he was potraited as a grumpy person, arrogant and a bit weird. Whe the location of the bookstore is on the Alice Island which the measure of the island is only 55m2. In the collection development, obtained result that the collection develompent start from salesperson that offering discount and new titeled book toward bookstore. Other than that, the problem in the bookstore is influenced by personal emotion, other than that the emersion of readaing club was helped bookstore to apart the problem of the collection development.
Dampak Diskriminasi Ras Terhadap Tokoh Utama Dalam Cerpen Rihlah Ghurbah Karya ‘Awad Al-Nawasreh; Analisis Sosiologi Sastra
Authors: Syarifuddin Syarifuddin , Zakiyah Rahmah
Published: January 2023

This study aims to describe the impact of racial discrimination on the main character in the short story "Rihlah Gharibah" by 'Awad Al-Nawasreh. Awad Al-Nawasreh managed to present an interesting and relevant story to the social conditions of the black community which has become a hot topic in recent times. This study uses a qualitative descriptive method with the main document object of the short story "Rihlah Gharibah". Important data and information collected and studied in this study are in the form of words, phrases and sentences that contain elements of the impact of racial discrimination contained in short stories. The data collection techniques are reading, recording, and analyzing documents with a sociology of literature approach as a framework of thinking. The results obtained from this study have been racial discrimination in this short story and have an impact on the main character in the short story. The impact on the main character is in the form of inferiority, social isolation and depression
The impact of habits of mind on students' mathematical reasoning: The mediating initial ability
Authors: Fatra Maifalinda , Sihombing Adison Adrianus , Aprilia Bella , Atiqoh Khamida Siti Nur
Published: January 2023

[English]: This study aims to analyze the relationship between thinking habits and mathematical reasoning mediated by students' initial abilities. Respondents consisted of 385 years eight students. Data was collected using a questionnaire via Google Forms and online tests. From all samples, 124 students fully completed all instruments. A questionnaire with 32 statements of the Likert scale model was used to collect data on students’ thinking habits (X1). Mathematical reasoning (Y) was examined through a test using five items of essay problems on relations and functions topic. The student's initial ability data (X2) was collected through an objective test using ten multiple-choice questions on set and Cartesian coordinates. The data was analyzed through descriptive statistics and path analysis. The results show a direct influence between students' habits of mind, initial ability, and mathematical reasoning. There is an indirect effect of habits of mind on students' reasoning abilities through initial ability as a moderator variable. The findings of this study indicate that the better the students' habits of mind, the better their mathematical reasoning and initial ability.
[Bahasa]: Penelitian survei ini bertujuan untuk menganalisis hubungan kebiasaan berpikir dengan penalaran matematis yang dimediasi oleh kemampuan awal siswa. Responden terdiri dari 385 siswa kelas VIII. Data dikumpulkan menggunakan kuesioner melalui Google Form dan tes secara daring.  Dari semua sampel yang menerima instrumen, ada 124 orang siswa menyelesaikan semua instrumendengan lengkap. Instrumen pengumpulan data untuk variabel kebiasaan berpikir (X1) menggunakan angket dengan 32 pernyataan model skala Likert. Data penalaran matematis (Y) diperoleh melalui tes berupa 5 butir soal uraian pada materi relasi dan fungsi. Data kemampuan awal siswa (X2) diperoleh melalui tes objektif  berupa 10 butir  soal pilihan ganda pada materi himpunan dan koordinat kartesius. Data dianalisis menggunakan statistik deskriptif dan analisis jalur. Hasil penelitian menunjukkan terdapat pengaruh langsung antara kebiasaan berpikir siswa, kemampuan awal, dan penalaran matematis. Terdapat pengaruh tidak langsung kebiasaan berpikir terhadap kemampuan penalaran siswa melalui kemampuan awal sebagai variabel penengah. Temuan penelitian ini mencerminkan bahwa semakin baik kebiasaan berfikir siswa maka semakin baik pula kemampuan penalaran matematis dan kemampuan awal siswa.
Conjunctivitis Patients in the Ophthalmology Outpatient Clinic Dr. Soetomo General Academic Hospital, Surabaya, in 2017
Authors: Hartadhi Angeline , Zuhria Ismi , Hermanto Bambang
Published: January 2023

Highlights:1. Ginger (Zingiber officinale) has antimicrobial activity against UPEC which commonly causes UTI in women.2. The MIC and MBC of ginger against UPEC in this study was 1000 mg/ml.
AbstractIntroduction: Conjunctivitis is a self-limiting disease. It can be diagnosed through clinical signs found in the eye examination. The purpose of this study was to define the characteristics of conjunctivitis patients in the ophthalmology outpatient clinic Dr. Soetomo General Academic Hospital, Surabaya, in 2017.Methods: This was a retrospective descriptive observational study of all conjunctivitis patients from the medical history in the ophthalmology outpatient clinic Dr. Soetomo General Academic Hospital, Surabaya, in 2017.Results: There were 497 patients included in this study. Most patients with conjunctivitis were 0-9 years old (19.32%). The most common sign of conjunctivitis was conjunctival hyperemia (80.89%), followed by eye discharge (24.14%), eyelid edema (8.05%), blepharospasm (5.63%), and papillary hypertrophy (5.03%). Most cases of conjunctivitis were bilateral (58.75%). Conclusion: The majority of conjunctivitis was bilateral conjunctivitis. It commonly affects children under ten years old. The most typical finding was conjunctival hyperemia.
Energy Adequacy, Body Composition, and Menstrual Cycle Disorder: A Correlation Study on Medical and Midwifery Students
Authors: Novianto Siti Aria Rahmani , Purwanto Bambang , Prasetyo Budi
Published: January 2023

Highlights:1. Menstrual cycle disturbance is related to organic and non-organic factors.2. BMI, waist circumference, and energy adequacy did not have a significant correlation with menstrual cycle frequencies among medical students.
AbstractIntroduction: Menstrual cycle disturbance is related to irregular reproductive hormones, which are influenced by organic and non-organic factors. This study aimed to determine the correlation between energy adequacy, body composition, and menstrual cycle disorder. Methods: This was an observational analytic study with a case-control design. The population of this study was medical and midwifery students in the Faculty of Medicine, Universitas Airlangga, Surabaya. 72 subjects consisted of 36 women with a normal menstrual cycle between 24–38 days and 36 women with a menstrual cycle length of <24 days or >38 days. Data about body composition, energy adequacy, and menstrual cycle were all collected by questionnaire. Data were analyzed by Spearman and Continency Coefficient correlation.Results: Most participants (66.7%) had normal body mass index (BMI), while 19.4% were overweight. Meanwhile, waist circumference in 63.9% of subjects was categorized as not obese. The participants' physical activities ranged from sedentary to vigorous (0 to 7386 MET-minutes/week). Less than one-third of the participants (27.8%) had an energy balance, while in most subjects (56.9%), energy adequacy was classified as deficit or negative energy balance. The statistics showed a p-value >0.05 in BMI (p = 0.231), waist circumference (p = 0.141), and energy adequacy (p = 0.389) with the menstrual cycle, indicating no correlation between BMI, energy adequacy, and waist circumference with menstrual cycle frequencies.Conclusion: Statistical analysis showed no correlation between energy adequacy, BMI, and waist circumference with menstrual cycle frequency disorder in students in the Faculty of Medicine, Universitas Airlangga, Surabaya.
Characterisation of the vertical temperature gradient in the canopy reveals increased trunk height to be a potential adaptation to climate change
Authors: De Rességuier Laure , Pieri Philippe , Mary Séverine , Pons Romain , Petitjean Théo , Van Leeuwen Cornelis
Published: January 2023

Given the important role of temperature in vine development and grape composition, climate change has already impacted wine production. Adaptation strategies are needed in order to sustain the production of wines and maintain their typicity. Several levers of adaptation are possible, including the use of more heat and drought tolerant plant material, relocating the vineyard and adaptations in the cellar. The training system is also a potential lever for adaptation that is relatively easy to implement. Taking that avenue, a study of the vertical thermal gradient in the vine canopy was carried out in order to determine whether trunk height could be an adaptation strategy for manipulating micro-climate in the bunch zone. Temperature was measured at four different heights from the soil (30, 60, 90 and 120 cm) in two adjacent vineyard parcels. One parcel was managed with cover crop and the other by tilling the soil. The results of this study show that increased trunk height is not likely to significantly delay ripeness, but it could minimise the potential damages of both frost and heat wave events. Type of parcel management was found to have an effect: close to the ground, the cover crop parcel generally had lower minimum temperatures and higher maximum temperatures in comparison to the tilled parcel, exposing the vines to an increased risk of both frost and heat wave damage. When investigating the factors driving the vertical thermal gradient, soil moisture and weather type were found to have an impact. Some of these factors, like mean temperature and soil moisture, may exacerbate the vertical temperature gradient of maximum temperature in a climate change context and increase the risk of damages due to extreme temperatures.
A Prospective Cohort Study of Psoriatic Arthritis Prevalence in A Serbian Patients with Psoriasis
Authors: Mahmutović Elvis , Biševac Emir , Milidrag Ardea , Bajin Zoran , Bošković Ksenija , Dolićanin Zana
Published: January 2023

Objective. The aim of this study was to determine the incidence and prevalence of psoriatic arthropathy and to point out the problem of their occurrence in a sample of patients diagnosed with psoriasis. Methods. 109 patients with diagnosed psoriasis and psoriatic arthropathy, took part in the survey. The average age of patients was 48,85±10,11. We analyzed the incidence and prevalence of the psoriatic arthropathy occurrence for the patients with psoriasis. Results. Psoriatic arthropathy registered with patients wer those with arthritic changes on: sacroiliac joints with 24 (22,02%) patients, 19 (79,17%) male and 5 (20,83%) female (p<0,001); spine with 11 (10,09%) patients, 6 (54,56%) male and 5 (45,45%) female (p=0,578); peripheral joints with 74 (67,89%) patients, 33 (44,59%) male and 41 (55,41%) female (p<0,01). When comparing the symptoms, most of the patients (63,30%) skin changes were represented before arthritis, for 27,52% patients arthritis preceded the skin changes, and for 9,17% patients the changes were simultaneous, Conclusion. Psoriatic arthropathy occurs more often in median age (31 to 50 years old) and it is more common for men than women. For most patients psoriatic skin changes preceded joints affection, with the most common ones being polyarthritis.
POLA PENULISAN NAMA BRAND KOSMETIK
Authors: Juwinda Juwinda , Asrini Hari Windu
Published: January 2023

Kosmetik yang beredar di pasar sangat beragam, keberagaman brand tersebut diikuti dengan keberagaman nama brand kosmetik. Penelitian ini bertujuan untuk mendeskripsikan bentuk pola penulisan pada nama brand kosmetik. Metode penelitian ini adalah metode deskriptif kualitatif dengan pendekatan analsisis isi. Teknik pengumpulan data adalah dengan analisis dokumen.. Analisis data dilakukan dengan model analisis mengalir. Hasil penelitian menunjullan ada empat pola penulisan brand kosmetik, yaitu  pola singkata, akronim, pemendekan, dan lambang. nama brand kosmetik berupa pemenggalan yang dipasarkan di Indonesia dilakukan meliputi bentuk singkatan, akronim, pemendekan, dan lambang. Singkatan dibentuk dengan menuliskan huruf pertama setiap unsur/kata. Akronim dibentuk melalui pengekalan suku pertama setiap unsur nama, kombinasi suku pertama, suku terakhir pada unsur nama, dan kombinasi suku pertama dan kata pada unsur nama. Pemendekan dibentuk dengan cara pengekalan suku pertama pada kata/unsur nama. Adapun lambang dibentuk dengan menggunakan huruf pertama kata/nama. Pola penulisan nama brand mempengaruhi persepsi konsumen, namun penelitian ini belum mengukur persepsi konsumen terhadap pola nama brand kosmetik sehingga memungkinkan ditindaklajuti peneliti lain.

 

 
PROBLEM BASED LEARNING UNTUK MENINGKATKAN KEAKTIFAN DAN HASIL BELAJAR MENULIS TEKS NEGOSIASI PADA SISWA SMA
Authors: Meisara Rotua , Rustam Rustam , Rasdawita Rasdawita
Published: January 2023

Penelitian ini bertujuan untuk meningkatkan keaktifan dan hasil belajar dalam menulis teks negosiasi kelas X SMAN 4 Kota Jambi. Penelitian ini merupakan penelitian tindakan kelas dengan subjek penelitian siswa kelas X-12 sebanyak 35 siswa. Teknik pengumpulan data menggunakan observasi, wawancara, dan dokumentasi. Teknik analisis data dalam penelitian ini menggunakan analisis deskriptif. Hasil penelitian menunjukkan adanya perubahan sikap yang menunjukkan keaktifan siswa dalam pembelajaran dan interaksi dalam kelompok. Hal tersebut dapat dilihat dari kepercayaan diri siswa dalam bertanya, berpendapat, dan berdiskusi dalam kelompok. Hasil belajar dengan model problem based learning menunjukkan bahwa siswa sudah mampu memproduksi teks negosiasi. Berdasarkan hasil tersebut, teks negosiasi yang dibuat sudah memenuhi kelengkapan struktur teks, ketepatan penulisan ejaan, keruntutan isi, dan ketepatan aspek bahasa.
ACCOUNTING THE EMISSIONS OF ENGINE FUEL VAPORS IN THE CRITERIA-BASED ASSESSMENT OF THE ECOLOGICAL SAFETY LEVEL OF POWER PLANTS WITH RECIPROCATING ICE EXPLOITATION PROCESS
Authors: Kondratenko O. M. , Andronov V. A. , Polishchuk T. R. , Kasionkina N. D. , Krasnov V. A.
Published: January 2023

This study proposed the approach and method on its basis for carrying out of the calculated assessment of the values of the comprehensive fuel and environmental criterion of Prof. I. Parsadanov as the indicator of the ecological safety level of the exploitation process of power plants with diesel reciprocating internal combustion engine, considering the mass hourly emissions of engine fuel vapor caused by the phenomena of large and small breathing of reservoirs. The purpose of the study is to develop the method for taking into account the parameters of pollutant emis­sions into the environment, such as motor fuel vapors due to the phenomena of large and small breathing of the power plant fuel tanks, as an independent factor of ecological safety. The calculated assessment according to the proposed method is carried out considering the properties of engine fuel, degree of a fuel tank filling, features of model of the engine operation, daily difference of atmospheric air temperature and settings of the respiratory valve of the tank. It is found that considering the emission of engine fuel vapors caused by the phenomenon of small breathing has almost no effect on the level of environmental safety, but for the option of taking into account the effect of the phenomenon of large breathing, such an effect is significant. The scientific novelty of the obtained results is that for the first time a method for considering the emission of engine fuel vapors caused by large and small breathing of fuel tanks of reciprocating internal combustion engines in complex criteria-based assessment of ecologi­cal safety. The practical value of the obtained results is that they are suitable for quantitative and qualitative assess­ment of the studied effects and development on this basis of technical solutions and organizational measures to redu­ce or eliminate them by developing appropriate environmental protection technology with actuators on a me­thodological basis of environmental safety management system, including the use of other steady standardized testing cycles as models of engine operation.
DEVELOPMENT OF METHODS FOR EVALUATION OF TECHNICAL CONDITION OF ENGINES ACCORDING TO THE RESULTS OF INDICATION OF WORKING PROCESS ON MODES DIFFERENT FROM NOMINAL
Authors: Bilousov Ie.V. , Marchenko A.P. , Rybalchenko М.Ie. , Savchuk V.P. , Tuluchenko H.Ya.
Published: January 2023

Technical condition assessment of marine internal combustion engines by the parameters and nature of the workflow is a common practice in their operation. Taking and analysis of indicator diagrams is a mandatory procedure provided by the rules of technical operation for the main range of large and medium-sized marine engines. There is a whole arsenal of indication means for such evaluation: from classical mechanical systems to electronic means of periodic or continuous action. The rapid development of electronic control systems and changes in approaches to logistics operations in maritime transport have imposed a number of limitations, somewhat narrowing the possibilities of using these methods. Most of the vessels that form the basis of the world merchant fleet were built 10...15 years ago. Information about the results of the indication of the engines of such vessels during bench tests is presented in the form of raster images. This complicates the process of using them as the reference needed to compare them with the actual diagrams obtained in operation by means of electronic control systems, which have replaced mechanical indicators over the past few years. In addition, tendencies to reduce the speed of vessels complicate, and often make it impossible to indicate the engines in the specified operating modes. As a result, the efficiency of using indicator diagrams to assess the current technical condition is sharply reduced. In this regard, there is an objective need to compare different methods of obtaining and storing information about the results of indication and in a unified method of presenting this information, convenient for processing and analysis. In addition, there is a need to develop methods for obtaining reference diagrams for nonspecific modes on the basis of processing the results of acceptance and commissioning bench tests of a particular engine to assess its technical condition by the results of indication on the partial load modes. This study is devoted to the comparison of different methods of presenting information and obtaining reference indicator diagrams for non-specific operating modes of engines.
THERMOPHYSICAL CHARACTERISTICS OF THE HVAF COATING FROM QUASICRYSTALLINE ALLOY OF THE Al-Cu-Fe SYSTEM
Authors: Linkov O.U. , Pylyov V.V. , Lykov S.V. , Pylyov V.O.
Published: January 2023

The article deals with the results of determining the thermal conductivity coefficient from quasicrystalline coatings of the Al-Cu-Fe system in the temperature range up to 900 °C. The Al-Cu-Fe quasicrystalline alloy acquires a great interest for practical use as a material for protective coatings. The Al-Cu-Fe alloy is used to produce thermal barrier coatings in internal combustion engines, non-stick coatings on chemical synthesis equipment and in the food industry and to prevent the icing in aviation. The Al-Cu-Fe quasicrystals have low density, high hardness, high elasticity modulus, high values of corrosion resistance and wear resistance, low coefficient of friction, lowered adhesion, low thermal conductivity in combination with the coefficient of thermal expansion, which is close by its value to some metals. The water atomized Al63Cu25Fe12 powder with a dispersion of +40/-63 μm that has a content of the quasicrystalline phase of about 60 wt. % was used for spraying. The coating was sprayed to the butt of a cylindrical substrate from steel 45 (diameter – 25 mm, height – 10 mm), which before spraying was subjected to jet-abrasive treatment by corundum powder with a determining particle size of 1 mm at air pressure of spraying of 0.5 MPa. The Al-Cu-Fe coating with a thickness of more than 0.8 mm was made by high-speed air-fuel (HVAF) spraying using a burner GVO-RV12 with the following spraying mode: the pressure in the combustion chamber of the burner is 1.0 MPa; the oxidant excess coefficient a ≈ 1.2, the spraying distance is 270 mm. The samples were installed on the side surface of the drum (diameter 120 mm), which rotates at a speed of 2.0 rev/s (the speed of movement of the sputtering spot is 0.8 m/s). Spraying was done in three steps of 10 seconds each with a 30 second cooling time between them. Determination of the temperature dependence of the thermal conductivity of the coating was carried out by solving the inverse problem of thermal conductivity by one-dimensional temperature fields in samples obtained by single-sided jet heating with an industrial hot air torch (at surface temperatures up to 450 °C) and an oxygen-propane welding torch (at temperatures above 450 °C). It is shown that the values of the thermal conductivity coefficient of Al-Cu-Fe quasicrystalline coatings in the range of 20 °С…900 °С vary within λ = 1.9 – 2.31 W/(m×K).
STUDY OF THE FEATURES OF GEL FORMATION AND RHEOLOGICAL PROP-ERTIES OF HYDROGELS BASED ON AGAR-AGAR
Authors: Lebedeva K. , Cherkashina A.. , Savchenko D. , Lebedev V.
Published: January 2023

The article shows studies on the study of the kinetics of gelation and the features of the rheological properties of hydrogels based on agar-agar. It has been found that hydrogels have attracted a lot of attention in the last 50 years due to their exceptional wide range of applications. They have a certain degree of elasticity, very similar to natural fabrics due to the high water content. Within the framework of the literature review, it has been shown that polymer hydrogels are usually obtained by polymerization of water-soluble unsaturated compounds in the presence of a bifunctional cross-linking agent or by structuring pre-prepared reactive prepolymers. The ability of polymer hydrogels to undergo bulk transitions between swollen and collapsed phases under the action of an external medium is one of the most important and universal properties of these materials. It has been shown that polymer hydrogels are known that are used as inert matrices for the controlled release of pre-absorbed biologically active substances. In this case, the release rate of the biologically active substance is determined by the nature and structure of the hydrogel polymer framework. The article studies the kinetics of gelation and the features of the rheological properties of hydrogels based on agar-agar in order to obtain modern biocompatible materials for the medical, cosmetological and pharmaceutical industries. It is shown that in compositions that consist exclusively of agar-agar and water, the shortest time for loss of stickiness and film formation is observed. At the same time, with an increase in the content of agar-agar from 25 to 50 %, one can see the most rapid processes of loss of stickiness and film formation. Compositions with the longest time for loss of stickiness and film formation were determined, which contain 25 % agar-agar and 50 % milk and honey, because they will be characterized by a long diffusion time of active substances to the human body. The scientific novelty of the study is related to the study of the effectiveness of gelation in conditions of highly concentrated agar-agar solutions with different contents of the polymer part and active substances, on the basis of which compositions for the preparation of face masks and medical tapes are proposed.
Optimization of support vector machines by meta heuristic methods and applying on Parkinson’s disease data set
Authors: OZSEVEN TURGUT , Özkorucu Zübeyir Şükrü
Published: January 2023

Parkinson’s disease occurs because of the decrease and insufficiency of dopamine cells over the time. Studies on computer-aided diagnosis systems that will help experts in making decisions for the early diagnosis of the disease remain up to date. Success has been achieved with computer aided diagnosis systems in a certain rate. The success rate varies according to the methods used, the data set and the optimization of the methods. In this study, parameter optimization of SVM classifier was performed to support the early diagnosis of Parkinson’s disease. The effect of different optimization methods that are current in the literature were compared on two different Parkinson’s disease data set. According to the results obtained, the highest accuracy rates vary according to the data set and optimization method. While Improved Chaotic Particle Swarm Optimization achieved high success in the first data set, Bat Algorithm achieved higher success in the other data set. While the success results obtained are better than some studies in the literature, they are at a level that can compete with some studies.
RNA-binding deficient TDP-43 drives cognitive decline in a mouse model of TDP-43 proteinopathy
Authors: Necarsulmer Julie , Simon Jeremy , Evangelista Baggio , Chen Youjun , Tian Xu , Nafees Sara , Gonzalez Ariana Marquez , Wang Ping , Ajit Deepa , Nikolova Viktoriya , Harper Kathryn , Ezzell Jennifer , Beltran Adriana , Moy Sheryl , Cohen Todd
Published: January 2023

TDP-43 proteinopathies including frontotemporal lobar dementia (FTLD) and amyotrophic lateral sclerosis (ALS) are neurodegenerative disorders characterized by aggregation and mislocalization of the nucleic-acid binding protein TDP-43 and subsequent neuronal dysfunction. Here, we developed an endogenous model of sporadic TDP-43 proteinopathy based on the principle that disease-associated TDP-43 acetylation at lysine 145 (K145) alters TDP-43 conformation, impairs RNA-binding capacity, and induces downstream mis-regulation of target genes. Expression of acetylation-mimic TDP-43K145Q resulted in stress-induced nuclear TDP-43 foci and loss-of-TDP-43-function in primary mouse and human induced pluripotent stem cell (hiPSC)-derived cortical neurons. Mice harboring the TDP-43K145Q mutation recapitulated key hallmarks of FTLD, including progressive TDP-43 phosphorylation and insolubility, TDP-43 mis-localization, transcriptomic and splicing alterations, and cognitive dysfunction. Our study supports a model in which TDP-43 acetylation drives neuronal dysfunction and cognitive decline through aberrant splicing and transcription of critical genes that regulate synaptic plasticity and stress response signaling. The neurodegenerative cascade initiated by TDP-43 acetylation recapitulates many aspects of FTLD and provides a new paradigm to further interrogate TDP-43 proteinopathies.
Noise Pollution and Academic Performance in India
Authors: agarwal sumit , Adbi Arzi , Ghosh Pulak
Published: January 2023

Many cities across the developing world are witnessing high noise pollution due to infrastructure development and construction works. Despite rising noise pollution, large-scale empirical research on the impact of noise on learning has been sparse. We fill this research gap by investigating whether noise pollution can influence student performance. Leveraging spatial-and-temporal variation in the noise pollution recorded by the monitoring stations within major cities in India and the academic performance in Class 12 examinations across schools located within these cities, we find that a ten percentage-point increase in noisy days in the January-March quarter increases the failure percentage of Class 12 boys by 6.1 percent. This pattern is not gender-neutral, as no association is observed between noise pollution and the academic performance of Class 12 girls. Furthermore, we find no effect of noise pollution recorded in the months away from examination days. Leveraging the variation in schools’ proximity to the nearest noise monitoring station, we find that the association between noise pollution and academic performance is strongest when the schools are located within close proximity of the nearest noise monitoring station. For schools located within 1 km of the nearest noise monitoring station, we find that a ten percentage-point increase in noisy days in the January-March quarter increases the failure percentage of Class 12 boys by 11.3 percent. We explore and discuss three potential mechanisms that can drive the noise-learning relationship. Our findings are consistent with one of them: noise pollution hurts attention when the cognitive burden of students to perform well in examinations is high. Evidence from the data rules out the possibility of poorer quality schools selecting into locations with higher noise as the mechanism driving the observed effect of noise pollution on academic performance. Our findings also rule out the possibility that economic growth by itself can trigger attention depletion that can explain the negative effect of noise pollution on academic performance. Overall, we show that noise pollution has an adverse impact on student performance, and this relationship is driven by the cognitive burden mechanism rather than selection or economic growth mechanisms.
Noise Learning of Instruments for High-contrast, High-resolution and Fast Hyperspectral Microscopy and Nanoscopy
Authors: Ren Bin , He Hao , Cao Maofeng , Gao Yun , Zheng Peng , Yan Sen , Zhong Jin-Hui , Wang Lei , Jin Dayong
Published: January 2023

Raman spectroscopy provides molecular fingerprint information of materials and live-cells in a label-free way, but the intrinsic low Raman scattering efficiency makes it vulnerable to noise. There has to be a trade-off among signal-to-noise ratio (SNR), imaging speed, and spatial and spectral resolutions when Raman spectroscopy is combined with microscopy and especially nanoscopy. Here, we report a noise learning (NL) approach that can fit the intrinsic noise distribution of each instrument by statistically learning the noise in the frequency domain. The fitted noise is then removed from the noisy spectra to improve their SNR as well as the contrast of hyperspectral images. The approach enhances the SNR by ca. 10 folds on a 12,500-spectra dataset, and suppresses the mean-square error by almost 150 folds. It significantly reduces the pixel-dwell time by 10 folds for tip-enhanced Raman imaging and the impact of drift on nanoimaging, leading to ca.2-fold improvement of the spatial resolution of 2.9 nm in air that reveals atomic-scale properties of bimetallic catalysts. We further demonstrate that NL can be broadly applied to enhance SNR in fluorescence and photoluminescence imaging, which allows the reduction of laser fluence by ca. 40 folds, thereby, circumventing the photobleaching and phototoxicity problems for long-term imaging of live-cells. NL manages the ground truth spectra and the instrumental noise simultaneously within the training dataset, and thus, bypasses the tedious labelling of the huge dataset required in conventional deep learning, which shifts deep learning from sample-dependent to instrument-dependent. NL is robust for a broad range of spectroscopic techniques for biomedical, photonic, and catalytic applications.
Reducing Cooling Water Consumption in a Solar Absorption Chiller for Mali Climates
Authors: Camara Soumaila , Sulin Aleksandr Borisovich
Published: January 2023

Air conditioning systems based on solar energy can be considered today as an alternative to air conditioning systems with electrical mechanical compressions to reduce building energy consumption from fossil energy sources and achieve climate change goals. This paper proposes a new concept for the efficient use of an absorption cooling system with a wet cooling tower and a type of dual-acting combined collector for DSH and NRC in accordance with the climatic conditions of Bamako. The operation of a type of dual-acting combined collector and cooling tower was studied throughout the year. The solar energy generated by the dual-acting combined collector on the first day of operation heats the water in the storage tank 1 to 80 °C after 6 to 7 hours of operation, and on subsequent days this time is reduced by 3 to 4 hours depending on the weather conditions. Thus, a dual-acting combined collector allows the system to provide cooling for an average of 8 hours per day throughout the year. The water in the cold-water tank, cooled by night radiation into space, ensures operation without turning on the cooling tower for an average of 73 minutes per day. The wet cooling tower efficiency is about 0.86, and the annual water savings in cooling tower losses due to the night operation of the dual-acting combined collector is estimated at about 35 m3.
A Two-Stage Hybrid Feature Selection Method of Communication Signals Based on Combined Scoring and Improved Binary Whale Optimization Algorithm
Authors: Liu Pengfei , Ke Jing , Zhao Hang , Shang Peng , Huang Kaijing
Published: January 2023

Communication signals have many modulation types in the current complex electromagnetic environment, so it is more and more difficult to recognize them accurately. Extracting features from different dimensions can describe the essence of the signals in different aspects and better distinguish various signal modulation formats. However, there may be features with poor anti-noise performance, irrelevant features and redundant features in the original high-dimensional feature set, which not only reduce the recognition probability of the signals but also make the feature selection space grow exponentially. Aiming at the problem of multi-dimensional feature selection of communication signals, this paper proposes a two-stage hybrid feature selection method based on combined scoring and improved binary whale optimization algorithm. In the first stage, the method uses the combined algorithm to initially filter the extracted signal features, and in the second stage, the improved binary whale optimization algorithm is used for further optimization. The results show that, compared with the original feature set, this method can increase the average recognition probability of the signals by up to 17%, and the feature reduction rate up to 81%. Besides, we prove that the proposed algorithm has certain generalization ability for different signal-to-noise ratio (SNR) and classifiers.
Regular penis-root masturbation: a promising behavioral treatment method for lifelong premature ejaculation
Authors: Memik Ömür , Voyvoda Bekir , Üstüner Murat , Karslı Onur , Halat Ahmed , ozcan levent
Published: January 2023

Purpose Premature ejaculation (PE) is a common male sexual dysfunction. Various treatments have been proposed for PE, including pharmacotherapy, behavioral therapy (BT), and combined BT and pharmacotherapy. Although pharmacotherapy is accepted as the first-line treatment for lifelong PE, high rates of discontinuation occur due to variable efficacy and side effects. In this study, the efficacy of penis-root masturbation (PRM), a newly described BT technique, was investigated in patients in whom medical treatment for PE was not successful.
Material and Methods The study included 35 patients aged 25-43 years, who were diagnosed with lifelong PE. Patients and their partners were informed about the PRM technique and asked to practice PRM three times a week for three months, with or without sexual intercourse. The patients' Premature Ejaculation Diagnostic Tool (PEDT) scores and intravaginal ejaculatory latency time (IELT) were recorded and compared before PRM training (T0) and at the third (T3) month after the start of PRM training.
Results The mean±SD PEDT scores were 16.26±1.94 at T0, 10.63±1.14 at T3. When compared to T0, the PEDT values at T3 were significantly lower (p=0.021). In terms of IELT, the mean T3 values (192.43±56.71) were significantly longer (p=0.035) than at T0 (50.43±13.84 seconds).
Conclusion PRM BT shows promise for lifelong PE patients who do not benefit from or discontinue to pharmacotherapy. Larger prospective trials are required to confirm these findings. Key words: Life-long premature ejaculation, penis root masturbation, behavioral therapy
The Relationship between Psychological Resilience and Quality of Life among the Chinese Diabetes Patients: The Mediating role of Stigma and the The Moderating role of Empowerment
Authors: Mei Yujin , Yang Xue , Gui Jiaofeng , Li Yuqing , Zhang Xiaoyun , Wang Ying , Chen Wenyue , Chen Mingjia , Liu Changjun , Zhang Lin
Published: January 2023

Objective: The quality of life of diabetes patients is associated with their disease or surrounding social environment. How to deal with psychological changes and adjust psychological stress response is worth further discussion. The researchers constructed moderated mediation models to test the impact of psychological resilience on the quality of life of people with diabetes, as well as the mediating role of stigma and the moderating role of empowerment.
Method: From June to September 2022, data were collected by multi-stage stratified sampling. Firstly, the First Affiliated Hospital of Wannan Medical College was randomly selected from all tertiary hospitals in Wuhu, Anhui Province. Secondly, two departments were randomly selected from this hospital: endocrinology and geriatrics. Thirdly, survey points were set up in each department, and T2DM patients were randomly selected for questionnaire surveys. In addition, we used the Connor-Davidson Elasticity Scale (CD-RISC) to measure the psychological resilience of patients, and used the Stigma Scale for Chronic Illness (SSCI) to measure stigma. Empowerment was measured by the Diabetes Empowerment Scale (DES). Quality of Life was assessed by the Diabetes Quality of Life Scale (DQoL). We used SPSS (version 21) and PROCESS (version 4.1) for data analysis.
Results: (1) Psychological resilience was negatively correlated with stigma and quality of life, and positively correlated with empowerment. Stigma was positively associated with empowerment and quality of life. Empowerment was negatively correlated with quality of life. (2) The mediation analysis showed that psychological resilience had a direct predictive effect on the quality of life, and stigma partially mediated the relationship; Empowerment moderates the first half of "PR→ stigma → quality of life"; Empowerment moderates the latter part of "PR→ stigma → quality of life."
Conclusion: Under the mediating effect of stigma, psychological resilience can improve quality of life. Empowerment has a moderating effect on the relationship between psychological resilience and stigma, and it also has a moderating effect on the relationship between stigma and quality of life. These results facilitate the understanding of the relationship mechanisms between psychological resilience and quality of life.