bluuebunny/crossref_metadata_2025_split huggingface dataset:
FLOW ENGINEERING TO REMEDIATE CONTAMINATED WATER QUALITY DUE TO DOMESTIC WASTE DISPOSAL IN BELIK RIVER, YOGYAKARTA
Authors: Suprayogi Slamet , Fitriyani Aulia Nur , Fadhilah Venny Vivid 
Published: February 2022

The Belik River Basin is located in an urban area and is affected by rapid population growth. Belik River flows from north of the UGM campus (Karangwuni Subvillage in Caturtunggal, Depok, Sleman) to Umbulharjo District then feeds into Gajah wong River before emptying into Opak River. This study sought to examine the effects of flow engineering on the quality of domestic waste-contaminated waters. The flow engineering is in the form of a small weir or pile of stones aiming to elevate the upstream water level and create a free fall or plunge that aerates the overflowing water. The water was sampled from four river segments twice: upstream and downstream of the designed weir. Water sampling from one element to the next factored in water travel time and settlement density in the surroundings with the assumption that these factors would produce different concentrations of domestic waste. The water quality parameters tested were D.O., BOD, COD, phosphate, nitrate, ammonia, and iron. The results showed that the flow engineering improved water quality in the four segments differently, as evident from some of the decreased or increased parameter values after the plunge. These different effects are influenced by the number of sources of domestic waste pollutants and the dominant land use in each segment. Keywords: Belik River, Small Weir, Aeration
MEASURING DIGITAL LITERACY SKILLS AMONG STUDENTS IN SENIOR HIGH SCHOOL
Authors: Delita Fitra , Berutu Nurmala , Sidauruk Tumiar , Elfayetti Elfayetti , Herdi Herdi 
Published: February 2022

Various digital-based learning media strongly support the quality of online learning.Â Digital media is essential in the learning process because it can package the material into more contextual, interesting audiovisual, reduces verbalism, and is more interactive.Â The primary purpose of this research was to measure the differences in digital literacy by comparing the digital learning media and PowerPoint media in online learning. The design of this study was a pretest-posttest group with a quasi-experimental method. Overall, 56 students in a senior high school in Senior High School 2 Percut Sei Tuan, Medan City,Â Sumatera Utara Province, served as participants in this study. Data were collected by questionnaires and structured interviews for digital literacy. Data analyses were mixed with the quantitative and qualitative methods. Quantitative data were analyzed statistically through independent samples t-test, and qualitative data were analyzed descriptively.Â Digital literacy data were analyzed using SPSS version 24 software.Â The results showed that theÂ students' digital literacyÂ usingÂ digital learning media was superior to those prepared using PowerPoint.Â Based on each aspect of digital literacy, namely, internet searching, understanding, and utilizing digital devices, hypertextual navigation, content evaluation, creating digital content, and communicating information, there were significant differences between groups on digital literacy competencies. All aspects of digital literacy in the experimental class were higher than in the control classKeywords:Â Digital Literacy, E-Learning, Learning Media
Experimental Investigation on Assembly Process for High Pressure Injection Pump Components
Authors: Bistriceanu Diana Petronela , Bujoreanu Carmen 
Published: February 2022

Abstract
The sealing gaskets are mechanical systems that seal and fill the gap between two or more jointed surfaces. The gasket have been created and designed to prevent leaks that can occur between surfaces subjected to compression and also, to prevent contamination with dust, mud or other impurities from outside of the system. The applicability area of these gaskets has increased visibly and they are currently used in a full range of equipment, such as mechanical transmissions, machines for terrain works, equipment production, etc. The way that seals help to fix and connect the mechanical assemblies, their stress resistance and their durability over the time have been studied by literature. The paper presents the influence of the components assembly in a high-pressure pump and its impact on sealing. Using the Taylor Hobson measurement system and scanning electron microscopy we were able to find out the composition of the gasket studied and determine the dimensional variations, mainly due to the assembly process.
Problems in Insuring Maintenance of Transport Systems of Fluid Hydrocarbons Through Metal Pipes
Authors: Vlădescu Robert-Gheorghe 
Published: February 2022

AbstractThe structural continuity of the and the integrity of the metallic materials specific of pipelines guarantees their exploitation under proper technical conditions and with the minimum reduction of environmental risks, representing a permanent preoccupation and essential condition in the maintenance of the transport systems of fluid hydrocarbons through metallic pipes.Metallic and non-metallic materials coming in contact with a certain environment suffer gradual degradation due to reciprocal interaction.The nature of this interaction can be chemical or electrochemical and this, in time, makes the material unusable due to the structural, dimensional or continuity changes.The resistance to corrosion of a metallic material is closely related to the composition and its structure, to its degree of purity, to the nature and characteristic of the corrosive environment, to the conditions in which the corrosion takes place.When there is uniform corrosion, the behavior of the material is evaluated by the gravimetric index, the penetration index and the volumetric index.The protection against corrosion represents the total measures taken to diminish the destructive action of the environment on materials in working concrete conditions, at the lowest possible cost and by meeting safety conditions.The main means of protection or reduction of the corrosion intensity are the following: treatment of the environment (with the purpose of reducing its aggressivity), coating of the surfaces exposed to the corrosion, application of surface treatments, moving the electrochemical potential of the metal in the field of immunity or passaging and draining of dispersion currents.The displacement of the potential of the metallic material protected in the field of immunity can be ensured by the realization of a galvanic pile with an active anode or by current injection, which opens, as an engineering practice, the way to ensuring the cathodic protection applied to the equipments in contact with an electrolyte (water, oil etc.), as the most modern method of preventing the loss of metallic material and of structural damage of the pipes destined for the transport of fluid hydrocarbons.
Solutions for Reducing the Energy Consumed by the Automotive HVAC System
Authors: Vranău Aida Maria , Bujoreanu Carmen , Caunii Vasile 
Published: February 2022

Abstract
The first cars with air conditioning appeared in the early 1940s. Then, 1500 Packard cars received an air conditioning system developed by Nash. In the 60s about 20% of the total production of cars had air conditioning system. Nowadays car manufacturers consider air conditioning as a standard option and try various solutions to increase thermal comfort and road safety. The air conditioning system in the current configurations is a big energy consumer system. All changes made to reduce the energy consumed will take into account temperature, humidity level, vibration and noise so that human safety and comfort are not affected. The purpose of this paper is to review the ways to reduce the energy consumed by the air conditioning system of cars and their importance.
Effect of Anti-Corrosion Treatment Applied to Diesel Injector Nozzles
Authors: Roman Mihai-Vasile , Popescu Daniela 
Published: February 2022

Abstract
To comply with latest standards regarding emission regulations, diesel technology focuses on how to obtain a very good spray quality, by identifying the appropriate geometry for injector nozzles, the optimum size of injection holes and the best hydraulic parameters for efficient fuel spray evolution and dispersion. In practice, injectors are often subject to operating problems, mainly because inside the diesel fuel injector nozzle, accumulation of deposits might occur. To control the phenomenon, the scientific literature proposes anti-corrosion treatment. The present paper studies the effect of applying anti-corrosion treatment to a new diesel injector. The investigation method consists in using a Scanning Electron Microscope next to EDX Spectrometry. The results indicate that chemical treatment can lead to new deposits that also contaminate the nozzles. Concluding, the anticorrosion treatment must include monitoring and control of the process and as a final step, a method to remove detergent deposits.
Cost Structure for a Small Mechanical Company
Authors: Rădulescu Bruno , Rădulescu Mara-Cristina 
Published: February 2022

Abstract
This article tries to help the small mechanical companies with a proposed solution of a cost structure.
The decomposition of all the activities that constitute the global cost, can constitute an advantage in front of the competition.
In today’s economy, any information on real time regarding the spending of a small company could make the difference between bankruptcy and profitability.
Initial Considerations in the Study of the Manufacturing Process by Electrochemical Machining
Authors: Iorgoaia Daniela Gabriela Ciobanu 
Published: February 2022

Abstract
Electrochemical machining relies on the electrolysis phenomenon, this being characterized by the chemical reaction between the workpiece material and an electrolyte solution. Both the electrode and the workpiece materials are connected into an electric circuit, charged by a direct current electric energy source. The workpiece is used to get some complex forms of cavities into parts of electrically conductive materials or other hard conductive materials, which could not be processed efficiently by the other means. This paper presents the results of some research related to the development of an equipment concept that could highlight the variation of some output parameters of the process in function of the value of the input factors in the process. It has opted to create a device for studying electrochemical erosion, where different substances, with a direct current source with variable adjustment. Taking into account the experimental results when using different materials for the workpiece, different materials for the tool electrode, many working electrolyte type substances, and changing the values of the electrical parameters, results necessary for a relevant conclusion could be obtained.
An Improved Unordered Pair Bat Algorithm for Solving the Symmetrical Traveling Salesman Problem
Authors: Nan Zhang , Zhimin Lv , Shen Qiao , Ting Li 
Published: February 2022

AbstractBat algorithm is an effective swarm intelligence optimization algorithm which is widely used to solve continuous optimization problems. But it still has some limitations in search process and can’t solve discrete optimization problems directly. Therefore, this paper introduces an unordered pair and proposes an unordered pair bat algorithm (UPBA) to make it more suitable for solving symmetric discrete traveling salesman problems. To verify the effectiveness of this method, the algorithm has been tested on 23 symmetric benchmarks and compared its performance with other algorithms. The results have shown that the proposed UPBA outperforms all the other alternatives significantly in most cases.
A Progressive and Cross-Domain Deep Transfer Learning Framework for Wrist Fracture Detection
Authors: Karam Christophe , Zini Julia El , Awad Mariette , Saade Charbel , Naffaa Lena , Amine Mohammad El 
Published: February 2022

Abstract
There has been an amplified focus on and benefit from the adoption of artificial intelligence (AI) in medical imaging applications. However, deep learning approaches involve training with massive amounts of annotated data in order to guarantee generalization and achieve high accuracies. Gathering and annotating large sets of training images require expertise which is both expensive and time-consuming, especially in the medical field. Furthermore, in health care systems where mistakes can have catastrophic consequences, there is a general mistrust in the black-box aspect of AI models. In this work, we focus on improving the performance of medical imaging applications when limited data is available while focusing on the interpretability aspect of the proposed AI model. This is achieved by employing a novel transfer learning framework, progressive transfer learning, an automated annotation technique and a correlation analysis experiment on the learned representations.

Progressive transfer learning helps jump-start the training of deep neural networks while improving the performance by gradually transferring knowledge from two source tasks into the target task. It is empirically tested on the wrist fracture detection application by first training a general radiology network RadiNet and using its weights to initialize RadiNetwrist
, that is trained on wrist images to detect fractures. Experiments show that RadiNetwrist
achieves an accuracy of 87% and an AUC ROC of 94% as opposed to 83% and 92% when it is pre-trained on the ImageNet dataset.
This improvement in performance is investigated within an explainable AI framework. More concretely, the learned deep representations of RadiNetwrist
are compared to those learned by the baseline model by conducting a correlation analysis experiment. The results show that, when transfer learning is gradually applied, some features are learned earlier in the network. Moreover, the deep layers in the progressive transfer learning framework are shown to encode features that are not encountered when traditional transfer learning techniques are applied.
In addition to the empirical results, a clinical study is conducted and the performance of RadiNetwrist
is compared to that of an expert radiologist. We found that RadiNetwrist
exhibited similar performance to that of radiologists with more than 20 years of experience.
This motivates follow-up research to train on more data to feasibly surpass radiologists’ performance, and investigate the interpretability of AI models in the healthcare domain where the decision-making process needs to be credible and transparent.
Digital Technologies, Social Entrepreneurship and Governance for Sustainable Development
Authors: Skivko Maria 
Published: February 2022

Abstract
In order to encourage and develop technological and social innovations, it is relevant to create and support businesses that foster such innovations. Additionally, sustainable development requires business transformation to complement several social, economic, or ecological problems. Social entrepreneurship as a type of business focuses on solving social, cultural, or environmental problems and creating effective responses to such challenges. By providing new working places, offering creative solutions to everyday problems, and highlighting the importance of social solidarity, social entrepreneurship contributes to sustainable development goals. In these conditions, the impact of digitalization is unavoidable: it relates technologies, consumers, and business strategies and stimulates necessary changes. This research emphasizes the use of digital technologies and applying the principles of digital culture by social business to foster technological innovations and contribute to the realization of sustainable development goals. The examples from the Russian social entrepreneurship applying digital innovations illustrate this idea.
Pengaruh Suhu Sintering terhadap Pembentukan Senyawa Gd0,95La0,05Ba1,95Sr0,05Cu3O7-?
Authors: Jeni Asni Mulyati , Sumadiyasa Made , Suryatika Ida Bagus Made 
Published: February 2022

Research has been conducted variations in sintering temperature between 900 ºC – 950 ºC for 12 hours on the synthesis phase of Gd1Ba2Cu3O7-d substituted La and Sr with stoichiometric composition Gd0,95La0,05Ba1,95Sr0,05Cu3O7-d. This study is intended to find out at what temperature the compound Gd0,95La0,05Ba1,95Sr0,05Cu3O7-d can be formed to the maximum. Samples with composition Gd0,95La0,05Ba1,95Sr0,05Cu3O7-d made from the raw materials Gd2O3, La2O3, BaO, Sr2O3 and CuO. Samples are synthesized using solid-state reaction method by wet mixing with nitric acid (HNO3) as solvent. The sample is sintering in the form of pellets in the furnace without annealing of oxygen gas. The synthesis results were characterized by X-Ray Diffraction (XRD) and analyzed with the Match-3 Program. By using the Entry number 96-153-9606, the results of it analysis showed that sintering temperature had an impact on the formation of phase compounds Gd0,95La0,05Ba1,95Sr0,05Cu3O7-d. Show that the volume fraction is increases with increasing of the sintering temperature, especially from temperatures of 930 ºC to 950 ºC. The highest volume fraction of 75,4263 % was obtained in samples that sintering at 950 ºC. Refinement results with Rietveld analysis method showed phase Gd0,95La0,05Ba1,95Sr0,05Cu3O7-d formed is in orthorhombic symmetry. The volume of cell units is likely to increase as the temperature increases.
Laju Paparan Radiasi Sinar-X pada Dinding Laboratorium Diagnostik ATRO Bali
Authors: Dewi Nunung Purwati , Trisnawati Ni Luh Putu , Iffah Maghfirotul 
Published: February 2022

Telah dilakukan penelitian mengenai laju paparan radiasi sinar-X pada dinding laboratorium diagnostik ATRO Bali. Dosis paparan radiasi sinar-X diukur menggunakan surveymeter di dalam dan di luar ruangan pada dinding penahan radiasi primer (A), dinding penahan radiasi sekunder (B dan D) dan dinding penahan radiasi bocor (C) dengan mengatur faktor eksposi pada tegangan tabung 80 kV, arus tabung 200 mA dan waktu 0,160 detik. Hasil pengukuran dosis paparan radiasi pada suatu dinding digunakan untuk menghitung laju paparan radiasi rata-rata. Hasil perhitungan rata-rata laju paparan radiasi sinar-X pada dinding A sebesar 1,106 × 10-7 mR/h, dinding B sebesar 1,600 × 10-7 mR/h, dinding C sebesar 6,217 × 10-8 mR/h dan dinding D sebesar 7,668 × 10-8 mR/h. Hasil perhitungan laju paparan radiasi sinar-X pada dinding di luar laboratorium diperoleh sebesar 0 mR/h. Dari hasil tersebut terlihat bahwa laju paparan radiasi sinar-X di laboratorium diagnostik ATRO Bali masih di bawah nilai batas dosis (NBD) yang direkomendasikan oleh Perka Bapeten No. 8 tahun 2011 sebesar 0,57 mR/h untuk pekerja radiasi dan 0,03 mR/h untuk masyarakat.
Perbandingan efektivitas abate dengan bubuk biji pepaya (carica papaya linnaeus) dalam menghambat larva Nyamuk Aedes Aegypti
Authors: Pramawati Anita , Kafit M. , Martha Elsusi , Candra Rozie Zurfie 
Published: February 2022

Latar Belakang: Penyakit yang ditularkan nyamuk seperti DBD (Deman Berdarah Dengue) masih menjadi masalah kesehatan masyarakat. Tujuan penelitian ini untuk mengetahui perbandingan efektivitas abate dengan bubuk biji pepaya (carica papaya linnaeus) dalam menghambat larva nyamuk Aedes aegypti.
Metode: Metode dalam penelitian ini yakni penelitian eksperimen atau percobaan (experimental research). Adapun jenis penelitian yang digunakan dalam penelitian ini adalah True-exsperiment dengan desain penelitian Posttest Only Control Design. Sampel dalam penelitian ini larva Aedes aegypti instar III.
Hasil: Perbandingan Efektivitas Abate dengan Bubuk Biji Pepaya (Carica papaya Linnaeus) dalam menghambat Larva Nyamuk Aedes aegypti yakni rata – rata kematian larva pada abate 6.8000 dengan simpang baku 7.55425, sedangkan rata – rata kematian larva sebuk biji papaya (Carica Papaya Linnaeus) 4.7000 dengan simpang baku 7.48406. dengan uji independent tes didapatkan signfikansi p = 0.540 (p = < 0.05), berarti tidak ada perbedaan bermakna diantara kematian larva yang disebabkan abate dengan serbuk biji papaya.
Kesimpulan: Diharapkan masyarakat lebih peduli terhadap lingkungan tempat tinggalnya dengan selalu menjaga kebersihan baik didalam rumah maupun diluar rumah
Hubungan Karakteristik Responden, Pengetahuan Dan Luas Ventilasi Dengan Kejadian Skabies Pada Santri Pondok Pesantren X Semarang
Authors: Rahmawati Ana Novia , Hestiningsih Retno , Wurjanto Moh. Arie , Martini  
Published: February 2022

Background:
Scabies is a contagious skin disease caused by Sarcoptes scabiei. Scabies is still a neglected health problem in the world. In Indonesia, scabies ranks 3rd out of 12 of the most common skin diseases. Islamic boarding school students are generally prone to scabies because they live and sleep in the same place. Scabies can be caused by gender, level of education lack of knowledge and the extent of inadequate ventilation.
Objectives:
This study aims to analyze the relationship between gender, knowledge and extent of ventilation with the incidence of scabies at the Nurus Sunnah Islamic Boarding School Semarang.
Research Metodes:
This study is a quantitative study with an observational analytic approach and a cross-sectional study design. The sample in this study were 107 respondents with a purposive sampling technique. Data collection using google form and analyzed using chi square.
Results:
The results of this study indicate that there are 19.6% of respondents suffering from scabies. There was a sex relationship with the incidence of scabies (p-value = 0.001), there was no relationship between the level of education and the incidence of scabies (p-value = 0.557), there was a relationship between the level of knowledge and the incidence of scabies (p-value = 0.036), there was a relationship between the extent of ventilation. with the incidence of scabies (p-value = 0.023).
Conclusion:
There is a relationship between gender, knowledge and extent of ventilation with the incidence of scabies in students of the Nurus Sunnah Islamic Boarding School in Semarang in 2020.
Factors Related To Hygiene Behavior Of Food Sanitation On Karak Crackers Manufacturing Workers In Home Industry In Karanganyar District, Indonesia
Authors: Suryani Dyah , Maulana Dhimas Iqbal , Suyitno  
Published: February 2022

Background:
Foodborne disease is food poisoning that can cause illness or death as a result of consuming contaminated food. Food contamination can occur due to biological, physical, and chemical contamination, if food hygiene and sanitation behavior is not good in its application, especially for food handlers.
Objectives:
The purpose of this study was to determine the factors related to hygiene behavior of food sanitation in workers making karak crackers in the home industry of Kerjo Sub-district, Karanganyar Regency, Central Java Province, Indonesia.
Research Method:
This study was using the quantitative analytical observational method with a cross-sectional design. The number of samples was 38 workers making Karak crackers with a total sampling technique. Data analysis used fisher's exact CI 95% (α = 0.05).
Findings:
This study found that the majority of the age range was 17-45 with education level (81.6%), knowledge level (65.8%), negative attitude (52.6%), and poor food sanitation hygiene behavior (68.4%). The results of Fisher's exact test showed that the variables of age (p-value = 0.147) and education level (p-value = 0.176) were not significantly related to hygiene behavior of food sanitation. While the level of knowledge (p-value = 0.30) and attitudes (p-value = 0.49) have a significant relationship.
Conclusion:
In sum, the level of knowledge and attitudes of the respondents are the factors that influence the hygiene behavior of food sanitation. Therefore, it is necessary to conduct training on food hygiene and sanitation practices for food handlers.