bluuebunny/crossref_metadata_2025 huggingface dataset:
Physicochemical Properties and Antioxidant Activity of the Seeds Oil of Two Cucurbita Species From Bejaia (Algeria): Comparative Study
Authors: Mindjou S. , Brahmi F. , Belkhiri W. , Adjeroud N. , Benali L. , Boucetta L. , Madani K. , Boulekbache L.
Published: July 2021

Cucurbita species are delicious, nutritious, and delightful products. Cucurbita seeds remain in large quantities as a waste product that could be valorized since they are excellent sources of oil. The aim of this study was to compare the seed oil of two Cucurbita species (Cucurbita pepo and Cucurbita moschata) harvested in Bejaia (Algeria). The oil quality was evaluated by the determination of some physicochemical parameters, and the content of phenolic compounds. The antiradical capacity of the antioxidants present in the oils was also assessed using two methods. The oil yield was 42.85% and 40.47% from the seeds of Cucurbita pepo and Cucurbita moschata, respectively. The determined physicochemical parameters were close to those defined by the international standards. The phenolic contents of the methanolic extracts of both oils were 5.53 and 4.45 mg GAE/100 g for Cucurbita moschata and Cucurbita pepo, respectively. The best anti-DPPH power was attributed to the oil of Cucurbita moschata (44.7%), while the methanolic extract of the seed oil of Cucurbita pepo showed the highest percentage (41.02%) of the ABTS•+ radical inhibition. By this study we confirmed that the Cucurbita seeds oil are highly nutritious and offer some medicinal benefits.
Analysis of EMC problems with the purpose of developing an effective method of WLAN design on the basis of information systems considering electromagnetic
Authors:   State University of Telecommunications, Lemeshko A. V. , Tkachenko O. M. , Makarenko А. О. , Tkalenko O. M. , Sorokin D. V.
Published: July 2021

The article analyzes the scope, technologies and principles of wireless local area networks, which allowed to mark the “bottlenecks” of these technologies, which need special attention when designing: the problem of hidden node; mutual interference between neighboring cells (intrasystem EMC); intersystem interference; providing QoS for responsible applications; expansion of wireless local area networks; the impact of network deployment features. The methods used to solve EMC problems in wireless local area networks are shown and their efficiency is analyzed: the mechanism of access to the transmission medium; IEEE 802.11e (QoS) standard; additional standards designed to reduce the impact of interference (802.11 h and k); coding and modulation. It is shown that the accounting of intrasystem and intersystem interference should be carried out in the early stages of design of wireless local area networks. It is shown that the existing mechanisms of access to the transmission medium are designed to organize the conflict-free operation of transceivers within a single access point and are vulnerable to interference created by transmission stations of neighboring access points. The dynamic sensitivity control algorithm is aimed at partially solving this problem, however, the main disadvantage of the DCC algorithm proposed for use in Wi-Fi 6 is that stations located near access points have a higher probability of access to the environment due to a higher signal level. Relative to electromagnetic interference, which leads to a shorter detection range of the carrier. That requires the development of advanced mechanisms to control the sensitivity of the service area of access points. Based on the analysis, a conclusion is made about the need to develop a methodology for designing wireless local area networks based on information systems, taking into account electromagnetic interference. Which will reduce the time of their design and increase the efficiency of their further operation.
A method for reducing information redundancy of digital images for cloud storage
Authors:   State University of Telecommunications, Katkov Yu. I. , Zvenigorodsky O. S. , Zinchenko O. V. , Onyshchenko V. V. , Fadyeyev B. O.
Published: July 2021

The article is devoted to the topical issue of finding new effective and improving existing widespread compression methods in order to reduce computational complexity and improve the quality of image-renewable image compression images, is important for the introduction of cloud technologies. The article presents a problem To increase the efficiency of cloud storage, it is necessary to determine methods for reducing the information redundancy of digital images by fractal compression of video content, to make recommendations on the possibilities of applying these methods to solve various practical problems. The necessity of storing high-quality video information in new HDTV formats 2k, 4k, 8k in cloud storage to meet the existing needs of users has been substantiated. It is shown that when processing and transmitting high quality video information there is a problem of reducing the redundancy of video data (image compression) provided that the desired image quality is preserved, restored by the user. It has been shown that in cloud storage the emergence of such a problem is historically due to the contradiction between consumer requirements for image quality and the necessary volumes and ways to reduce redundancy of video data, which are transmitted over communication channels and processed in data center servers. The solution to this problem is traditionally rooted in the search for effective technologies for compressing, archiving and compressing video information. An analysis of video compression methods and digital video compression technology has been performed, which reduces the amount of data used to represent the video stream. Approaches to image compression in cloud storage under conditions of preservation or a slight reduction in the amount of data that provide the user with the specified quality of the restored image are shown. Classification of special compression methods without loss and with information loss is provided. Based on the analysis, it is concluded that it is advisable to use special methods of compression with loss of information to store high quality video information in the new formats HDTV 2k, 4k, 8k in cloud storage. The application of video image processing and their encoding and compression on the basis of fractal image compression is substantiated. Recommendations for the implementation of these methods are given.
Analysis of the ukrainian market of cloud technologies
Authors:   State University of Telecommunications, Fedosiva K. A. , Sribna I. M.
Published: July 2021

The article is devoted to the analysis of the Ukrainian market for the spread of cloud technologies, an overview of growth dynamics, application segments and identifies leading companies that offer services using cloud computing. According to the unanimous forecasts of the world’s leading consulting companies, the rapid improvement and spread of cloud computing is now one of the key trends that in the next 5-8 years will significantly affect the global development of not only the IT industry but also business, finance, public administration, medicine, education and many other areas of human life. Prospects for the rapid development of cloud services in Ukraine encourage more careful consideration of the experience of their application in more «mature» markets and identify the main benefits and risks of these technologies in local conditions. People perceive the cloud as a platform only for storage and computing. However, there are many other opportunities that cloud technologies offer with cloud computing. Currently, cloud computing technologies are becoming increasingly popular. The advantages of this technology are obvious: economy, speed, elasticity, versatility of access. In the future, their use will create a powerful information and telecommunications system, which will be a technological solution for the construction and development of new infrastructure in the country. The world’s largest IT vendors (Microsoft, Amazon, Google and others) somehow implement cloud computing services, providing a wide range of opportunities for users. Thus, cloud computing is software and hardware that is available to the user via the Internet (or local network) in the form of a service that allows you to use a user-friendly web interface for remote access to dedicated resources (computing resources, programs and data). Thus, cloud computing is the next stage of information development of mankind.
Research and implementation of NN based on TensorFlow
Authors:   State University of Telecommunications, Shefkin B. V. , Krasyuk I. V. , Khomenchuk V. O. , Storchak K. P. , Tushych A. M.
Published: July 2021

TensorFlow is Google’s open-source machine learning and deep learning framework, which is convenient and flexible to build the current mainstream deep learning model. Convolutional neural network is a classical model of deep learning, the advantage lies in its powerful feature extraction capabilities of convolutional blocks. A neural network in the simplest case is a mathematical model consisting of several layers of elements that perform parallel calculations. Initially, such an architecture was created by analogy with the small computing elements of the human brain — neurons. The minimal computing elements of an artificial neural network are also called neurons. Neural networks typically consist of three or more layers: an input layer, a hidden layer (or layers), and an output layer. An important feature of the neural network is its ability to learn by example, this is called learning with a teacher. The neural network is trained on a large number of examples consisting of input-output pairs (corresponding to each other input and output). In object recognition problems, such a pair will be the input image and the corresponding label — the name of the object. Neural network learning is an iterative process that reduces the deviation of the network output from a given «teacher response» — a label that corresponds to a given image. This process consists of steps called epochs of learning (they are usually calculated in thousands), each of which is the adjustment of the «weights» of the neural network — the parameters of the hidden layers of the network. Upon completion of the learning process, the quality of the neural network is usually good enough to perform the task for which it was trained, although the optimal set of parameters that perfectly recognizes all the images, it is often impossible to choose. Based on the TensorFlow platform, a convolutional neural network model with two-convolution-layers was built. The model was trained and tested with the MNIST data set. The test accuracy rate could reach 99,15%, and compared with the rate of 98,69% with only one-convolution-layer model, which shows that the two-convolution-layers convolutional neural network model has a better ability of feature extraction and classification decision-making.
Methods for encrypting text information using blockchain technologies
Authors:   State University of Telecommunications, Dzyma A. V. , Shcherbyna I. S. , Shtimmerman A. M. , Prokopov S. V.
Published: July 2021

The article analyzes the methods of blockchain technologies for encrypting text information as a modern tool for protecting the text data of users on the network. During the rapid development of the Internet, the question of the secure transfer of text information between users is increasingly raised. Sending text information over the Internet is a common situation, and the protection of such data plays a very important role in the functioning of a large number of companies. Currently, there are a number of options for the transmission of text information, which require an appropriate level of protection during transmission. Transmission and encryption methods depend on the general needs of the sender and receiver. Thanks to cryptography and blockchain, it is now possible to create technologies that will allow you to truly securely transmit textual information between users on the Internet. Methods of encrypting text information based on blockchain technologies make it possible to implement this. You need to consider what these methods consist of Encryption is a way to hide the original meaning of a message or other document that distorts its original content. Converting plain, clear content into code is called encoding. This implies that there is a mutual unambiguous correspondence between the symbols of the text and the code — this is the fundamental difference between encoding and encryption. Encryption and encryption are often mistaken for the same thing, forgetting that to recover an encrypted message, it is enough to know the replacement rule, while to decrypt an already encrypted message in addition to knowing the rules of encryption, you need a cipher key. The key in this case means a specific secret state of the parameters of encryption and decryption algorithms.
Initial setup of PBX server based on Asterisk
Authors:   State University of Telecommunications, Danylchenko V. M. , Mykolaychuk V. R. , Tkalenko O. M. , Didkivsʹkyy A. S.
Published: July 2021

The development of information technology is very dynamic, in particular, actively developing computer networks, which are increasingly used for telephone conversations. Recently, there has been increased interest in IP-telephony technologies, in other words PBX, the use of which can significantly reduce the cost of telephone communication within the company. PBX (Private Branch exchange) is a system of devices that provides automatic connection and support of telephone communication between subscribers of this PBX, who use special end devices — telephones. A virtual PBX is a powerful telephone system that uses an Internet connection as opposed to standard telephone services. A standard PBX is used to transfer calls from the Internet to a public telephone switching network. Virtual PBX can be considered as a more economical version, because no equipment is involved, everything is virtual and hosted by the service provider. Currently, the open communication platform Asterisk occupies almost 85% of the open source PBX market. The Asterisk automatic telephone exchange supports both IP-telephony protocols and traditional communication lines. All basic and advanced PBX functions are supported: voice menu, call recording, call statistics, voicemail, queuing and operator distribution. Video communication is directly supported. The latest versions of Asterisk support call encryption. Asterisk has simple and well-documented interfaces for integration with other systems, making it easy to embed communications in business processes and business applications. There are a large number of various graphical tools for administering Asterisk, both paid and free, among which the most popular is the free WEB interface FreePBX.
Development of an algorithm for routing self­organizing radio networks
Authors:   State University of Telecommunications, Breslavsʹkyy V. O. , Laptyev O. A. , Pravdyvyy A. M. , Zozulya S. A.
Published: July 2021

The routing algorithm in self-organizing radio channels is proponent. The following peculiarities: reduction of the overworld of the flow of critical signals in the grid for the transmission of the function of vibration (retrofitting) to the routes of all the nodes; Shows the adaptation and self-updating of the net for an alternative route when going out of the way of active retransmission universities. It has been deliver that the algorithm is protonated for the supremacy of the parameters for the reduction of the characteristics in proportion to the algorithms used. Self-organizing routing algorithm (SRA) of signs for mobile childless self-organized self-organizing links, in which universities may have the same status. The functions of the base stations distributed among the participants of the informational relationship. The SRA algorithm is intelligent, in which the possibility is laid by the university to independently decide on the fate of the route that/or is renewed. The measure, prompted in accordance with the SRA protocol, in the event that it is necessary to update the packages in the decimal universities, the form of the new session, so that it is possible to distribute information from the new universities. In case of transmission of information from a group of universities of the same university, the identifier allows the university to receive information and distribute information. In the designated algorithm, to encourage the route, the universities will only rotate the necessary fields and do not rotate the required fields, allowing the speed of an hour of processing and taking decisions about participating in the route. To process the package, it is not necessary to insert the package in one piece, to finish it without looking over the fields and adjusting the values. In the SRA algorithm for verifying the delivery of packets, the power of dipole antennas is to broadcast on all sides, so that it is possible to see any packets in the confirmation or to change a number of such packets. Fragmentation of the routing algorithm of self-organizing radio channels based on the parameter of interlocking the network traffic, changing the basic protocols of information exchange by 15%. This is general result to bring the overvoltage of developed this algorithm.
A comparative analysis of non­reference assessment methods
Authors:   State University of Telecommunications, Grebenyuk V. V. , Dibrivnyy O. A. , Nehodenko O. V.
Published: July 2021

A comparative analysis of functions to assess image quality in the absence of a sample: no-reference (NR) measure or NR-type methods. The availability of NR-methods is very important for assessing the quality of streaming video such as television, game streaming, online conferences, web-chatting, etc. (because on the side of the recipient of the video there is no standard for quality comparison) and assessing the results of transformations aimed at improving video, and choosing the parameters of these transformations (brightness change, semitone and others). The human visual system (HVS) is able to visually assessing video quality, but If required to visually assess the quality of dozens or hundreds of videos or ranking them by quality level it will be needed a huge amount of time. Six types of experiments were performed to analyze the correlation of calculated quantitative estimates with visual assessments of the quality of the tested video files. Three of them are fundamentally new: comparing video after gamma correction and changing the contrast with different parameters, as well as blurring, which may be the result of defocusing the camcorder. A hybrid method (or reduced-reference (RR) measure) and a full-reference (FR) measure or FR-type method were also added for comparison. It has been experimentally shown that none of the studied non-reference methods of image quality assessment is universal, and the calculated assessment cannot be converted into a quality scale without taking into account the factors influencing the distortion of image quality. Moreover, all NR-type methods could not cope with the experiment of changing the contrast, believing that the best result is the most contrasting image but the original. Instead, the reference methods showed an excellent result (except one, which showed partial ineffectiveness). Also, it has been shown performance comparison between methods. It is shown that most of the studied methods calculate local estimates for each frame, and their arithmetic mean value is an estimate of the quality of the entire video file. If the video is dominated by large areas of uniform evaluation, methods of this type may give incorrect quality evaluations that do not coincide with the visual evaluations.
Research of text recognition systems and data removal for ukrainian-­language documents
Authors:   State University of Telecommunications, Hordiyenko K. O. , Koba A. B. , Dovzhenko T. P.
Published: July 2021

This article discusses the existing software, the main task of which is to extract information from digitized documents. From all the software was selected what is based on neural network technology and deep learning. To extract information from documents, manual work of personal computer operators can be used, which takes a long time and does not exclude the influence of the human factor, as well as digitization of documents with further processing in software based on the principle of subordination of documents to templates and rules, data processing speed and the need to make changes to the settings due to a change in the type of document. The article aims to investigate the existing software for extracting data from digital documents based on neural network technology, and their applicability to Ukrainian-language documents. To do this, a simple set of invoices was created and uploaded to the system. The development of a system for extracting information from digitized Ukrainian-language documents using neural networks will speed up data processing, provide an opportunity for their processing depending on the scope of the user of this software. It is established that at present, there are no systems that can independently determine what data is needed for extraction from Ukrainian-language documents. Existing systems require the creation of software that will act as a cover for the functionality of systems that transmit their information through the REST API. Google Form Parser is considered to be the best system, but it requires a constant connection to the Internet, which can be a serious obstacle to the use of such a product in certain areas of activity.
Functional stability of information networks in the availability of limited a priori information about reliability
Authors:   State University of Telecommunications, Ishcheryakov S. M. , Prokopov S. V. , Karhapolov Yu. V. , Berezovsʹka Yu. V.
Published: July 2021

In the article, based on the use of the results of evaluating of linear and fractional-linear functionals, sets of calculated ratios are obtained to determine the guaranteed (largest and smallest) values of basic of the reliability indicators of information systems in the presence of limited a priori information about the distributions of determining random variables which are represented by the initial moments. Such calculations at the design stage of complex information systems are predictable, because they serve as a grounding for the expected indicators of reliability of information systems that do not yet exist in real life. The peculiarity of the considered information systems is that they are used not continuously, but sporadically. In this case they perform tasks that come at random times. In such systems, the replenished time reserve provided in the system itself is used along with the random time reserve due to the nature of the task (this time reserve is determined from the moment of failure of the element or information system until the receipt of the task). Examples of sporadic information systems are VANET car networks, which have high latency requirements, real-time data centers, and communication systems. The main purpose of these calculations is as follows: a comparative analysis of various design (scheme) options for information systems at the design stage for a reasonable choice of the general structural scheme, methods of redundancy, methods of control and maintenance; a predicted assessment of the reliability of the system is given to substantiate the guaranteed conclusion that the designed information system can be manufactured according to the requirements that meet the requirements of functional stability; an approximate assessment of the reliability of information systems at the stage of testing a test sample for a reasonable determination of the terms of maintenance of systems in conditions of a priori uncertainty.
Development of the fourth generation radio network and forecasting of its coverage in the conditions of urban development
Authors:   State University of Telecommunications, Dakova L. V. , Dakov S. Yu. ,   Taras Shevchenko National University of Kyiv, Duzhyy R. V. ,   The National Defence University of Ukraine named after Ivan Cherniakhovskyi, Zavaliy A. A. ,   State University of Telecommunications, Zavaliy M. S. ,   State University of Telecommunications
Published: July 2021

Here is an example of how the fourth generation of cellular networks is developing rapidly today. The traffic per subscriber is growing every month. Operators are forced to provide coverage and the necessary capacity by installing new base stations. Quality network planning can provide better network performance and reduce deployment and optimization costs. It is also important to use a planning and optimization tool to model network coverage and perform performance analysis. According to the results of many studies, the amount of data transmitted over wireless networks has been growing significantly recently. Buildings are obstacles to the signal over long distances, so for the same area in different types of terrain for quality coverage it is necessary to place a different number of base stations. In addition, it is necessary to take into account the peculiarities of the building, as signals from different base stations are an obstacle for each other. On the other hand, high population density requires a large network capacity to meet the needs for speed and number of simultaneously connected users. Traffic is projected to increase by 2024, due to the emergence of new video services and the growing popularity and involvement of the population in existing ones. LTE-Advanced provides the ability to deploy repeaters to increase network performance. In the context of cellular communication systems, an important aspect is radio network planning - the process of locating base stations, determining the frequency channels and radio parameters of a wireless communication system to provide sufficient coverage and connection capacity to ensure the required level of service quality. to the user. Coverage planning refers to a geographic area where the network must provide a signal with sufficient power to provide access to voice or packet services, and capacity planning determines the system’s ability to provide services to a given number of subscribers. The purpose of the article is to study the process of planning the fourth generation LTE network in terms of urban development, calculations and modeling of coverage.
Practical use of ArcGIS for the ensurance of national security
Authors:   National Academy of Security Service of Ukraine, Semenchuk M. R.
Published: July 2021

At the present stage of development, the geographic information system (GIS) technology can be applied in many areas, including national security. Geospatial data create new opportunities for resolving vital issues, among which are detection and immediate response to threats and dangers, as well as for making effective management decisions on preventive security development. Previously, GIS has been a technology used by a small group of geospatial data analysts with limited access to up-to-date data. Nowadays, the ArcGIS software is a geospatial platform, which provides capabilities to the civil security sector of countries striving for sustainable development, public order and emergency prevention. ArcGIS maps and applications can help governments to create space for interagency cooperation in national security and other fields, where geospatial data is an administrative and decision-making instrument. The article describes the advantages of the ArcGIS software, including its extensions and add-ons, the best practices of applying GIS technology for the purposes of public order enforcement, potential offense detection and public event security. In addition, ArcGIS is used to access the existing data and integrate it into a common geographic context - a web map ensuring the interoperability of data and a better understanding of how to take security measures and make objects clearly visible. The GIS application analysis has shown that public order enforcement through the utilization of geospatial data implies the detection of dangers, threats and vulnerabilities, interagency cooperation thanks to shared situational awareness across multiple groups for daily operations, and action coordination with the use of the latest technologies and public information. At this point, the ArcGIS software makes it easier to take national security and pubic order measures from any device, at any time and place.
Impact of information technology on the lives of people with disabilities
Authors:   State University of Telecommunications, Nikitchenko A. Yu. , Yakovenko N. D. , Sribna I. M. , Kondratenko N. Yu.
Published: July 2021

This article discusses the impact of information technology on the lives of people with disabilities. The latest technologies open wide opportunities for use by people with special needs. In particular, digital technologies are much more important for people with disabilities than for others, because they not only help to make their lives more comfortable, but also provide an opportunity to live as full a life as possible. The aim of the article is to study and analyze the impact of information technology on the lives of people with special needs in the modern world. Mobile applications are one of the most affordable IT products specialized for people with disabilities. The latest IT technologies, such as: speech recognition, the use of various sensors, machine and deep learning of neural networks simplify the lives of people with special needs. People with disabilities face a variety of challenges in today’s information space. But modern technology helps them solve many problems. Such technologies are called Assistive Technologies. High-tech assistive technologies open up a large number of opportunities for interaction with the outside world, regardless of the type of disability. For example, by using computer technology for tasks such as reading and writing documents, communicating with other people, and searching for information on the Internet, students and employees with disabilities are able to work independently with a wider range of data. Considering all the facts discussed in this article we can make the following conclusion. The article reviewed and analyzed the impact of IT technologies on the lives of people with special needs in the modern informational environment. We can state for sure that modern society is more than ever integrated into IT technologies. This way, the people with disabilities use IT in their daily lives. Such technologies are created not only to simplify their lives, but also to provide opportunities for comprehensive and full interaction with the outside world. Numerous researches confirmed that the implementation of a simple interface specialized for the specific requirements of people with disabilities makes the use of such applications one of the key stages in attracting people with special needs to the active social life of society.
PEMAHAMAN KONSEP MATEMATIKA MENGGUNAKAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING DAN GROUP INVESTIGATION
Authors: Fatimah Sitti , Nur Fitriani , Suharti Suharti , Sulasteri Sri , Angriani Andi Dian
Published: July 2021

The purpose of this research is to determine whether there are differences in the understanding of the concept of students who learn by applying the model Problem Based Learning with Group Investigation. This research in to the type of quasi-experimental design of non-equivalent pretest-posttest control group. The samples taken were class XI IPA 2 (experimental class I) and class XI IPA 3 (experimental class II). The instrument applied was a learning outcome test containing 5 items. Data analysis was calculated using analysis techniques: descriptive and inferential. The results of the descriptive data obtained mean scores of 44.81 pretest and 76.54 posttest for the experimental class I, while the experimental class II scored 47.54 pretest and 84.14 posttest. From the independent sample test, it was obtained a sign score: 0.000 at a significance level of 5%. This means that H0 is rejected, so it was decided that the level of conceptual understanding for the model is Problem Based Learning different from the level of concept understanding in the model Group Investigation.
INOVASI LEARNING MANAGEMENT SYSTEM (LMS) MENGGUNAKAN GOOGLE SUITE FOR EDUCATION (GSE) DALAM PEMBELAJARAN JARAK JAUH BIDANG STUDI MATEMATIKA SISWA KELAS IX DI SMP NEGERI 6 PEKALONGAN
Authors: Purnamasari Evi Sugiana , Kamal Muhammad Choirul
Published: July 2021

This paper aims to determine the impact and learning outcomes of Mathematics Class IX students of SMP Negeri 6 Pekalongan in the 2020/2021 academic year on distance learning using Google Suite for Education (GSE). This paper is a best practice carried out in January-February in the even semester of the 2020/2021 school year. The object of this best practice is 32 students of class IXF at SMP Negeri 6 Pekalongan who were selected randomly (random sampling). The method used is descriptive qualitative research method. Data collection techniques in this study were interviews, observation and documentation. The best practice results show that the use of Google Suite for Education (GSE) can have a positive impact on the mathematics learning process and improve mathematics learning outcomes for class IXF students of SMP Negeri 6 Pekalongan for the 2020/2021 school year. The positive impact is seen from students' activities being more closely monitored and students being active during the learning process and the results of student activity indicators exceeding the target of 70%. The results of learning mathematics are also good, it can be seen from the results of the daily assessment of 32 students, many students who do not complete only 2 people, classical completeness is 94% and the average value is 92. So the completeness value is very high and the average value is also very high.
ANALISIS FAKTOR-FAKTOR KETERLAMBATAN PADA PROYEK PEMBANGUNAN GEDUNG ASRAMA MAN 1 TULEHU MALUKU TENGAH
Authors: Sanaky Musrifah Mardiani
Published: July 2021

Tujuan penelitian ini adalah untuk mengetahui faktor-faktor yang menentukan terjadinya keterlambatan dan intensitas terjadinya pada proyek pembangunan Asrama MAN 1 Tulehu Maluku Tengah. Berdasarkan analisis faktor terbentuk 17 faktor yang mempengaruhi keterlambatan proyek pembangunan Gedung Asrama MAN 1 Tulehu Maluku Tengah. Namun diambil 5 faktor yang paling dominan dilihat dari Rangking yang tinggi.5 faktor itu adalah Kesalahan desain dengan nilai Mean= 3,24, jumlah pekerja, dengan nilai Mean = 3,16, ketersediaan peralatan yang memadai dengan nilai Mean = 2,96 ,komunikasi anatar tenaga kerja dan kepala tukang, dengan nilai mean = 2,80, keterlambatan pengiriman bahan (material) = 2,76. Dan terdapat 4 indikator penting dalam pengendalian keterlambatan proyek, diantaranya yaitu pengendalian terhadap perubahan (change),tenaga kerja (labors),peralatan,dan bahan (material).
PENGENDALIAN BIAYA DAN WAKTU DENGAN EARNED VALUE CONCEPT PADA PROYEK PENATAAN BANGUNAN
Authors: Muniroh Ma'rifatul , Kempa Meidy , Buyang Christy Gery
Published: July 2021

Dalam suatu proyek, perencanaan serta pengendalian biaya dan waktu merupakan bagian dari manajemen proyek konstruksi yang sangat penting keberadaannya. Apabila terjadi keterlambatan proyek maka akan berpengaruh pada biaya proyek. Studi kasus penelitian ini dipilih pada Proyek Penataan Bangunan Kws. Dermaga Tawiri (Lantamal) Kota Ambon, dimana kondisi yang terjadi adalah proyek mengalami perubahan waktu pelaksanaan dari 210 hari kalender menjadi 150 hari kalender serta adanya hambatan mengenai desain perencanaan yang belum fix, sehingga kontraktor perlu mengajukan CCO (contract change order). Tujuan penelitian adalah untuk mengetahui proyeksi biaya dan waktu penyelesaian proyek terhadap perencanaan awal. Metode yang digunakan adalah earned value concept, dengan menggunakan indikator BCWS, BCWP, ACWP, CPI, dan SPI untuk evaluasi biaya dan waktu proyek, serta indikator EAC dan EAS untuk melihat proyeksi biaya dan waktu penyelesaian proyek. Hasil analisis data yang dilakukan pada minggu ke-14 menunjukkan bahwa biaya yang dikeluarkan lebih dari perencanaan dan waktu pelaksanaannya melebihi waktu rencana, yang ditunjukan dengan nilai CPI = 0,94 (CPI < 1) dan nilai SPI = 0,98 (SPI < 1). Hasil perhitungan proyeksi biaya akhir proyek sebesar Rp. 27.079.501.611,41 dengan waktu pelaksanaan 151 hari yang berarti biaya yang dikeluarkan lebih dari perencanaan dan waktu lebih lambat dari jadwal yang direncanakan.
PENGARUH PEMBEBANAN TERHADAP ARUS EKSITASI GENERATOR UNIT 2 PLTMH CURUG
Authors: Farhan Miftah
Published: July 2021

Generator salah satu bagian dari sistem tenaga listrik yang digunakan untuk mengkon-versi energi mekanik yang berasal dari putaran turbin menjadi energi listrik dengan memanfaatkan gaya gerak listrik. Dalam proses pembangkitan gaya gerak listrik (GGL) di samping putaran dari turbin, diperlukan arus penguat (eksitasi) yang berfungsi untuk menghasilkan medan magnet pada kumparan medan di rotor generator. Arus digunakan untuk meningkatkan tegangan keluaran sesuai pembebanan yang diterapkan. Adapun alat yang digunakan untuk membina arus eksitasi adalah Automatic Voltage Regulator (AVR). Pembebanan yang dibedakan pada pembangkit setiap waktunya berubah-ubah. Oleh pembangkit listrik tenaga listrik harus mampu membangkitkan daya listrik sesuai dengan besaran beban yang berubah-ubah tersebut. Pada pembangkitan tenaga listrik, fluktuasi pembebanan ini dapat mengatasi pembantuan katup udara dan arus eksitasi yang di-injeksikan pada generator rotor pada putaran rotor yang konstan oleh AVR sehingga dihasilkan daya listrik sesuai pembebanan yang diterapkan. Tujuan penelitian ini adalah untuk menganlisa pengaruh beban terhadap arus eksitasi yang ada. Hasil yang diperoleh adalah beban berpengaruh ter-hadap arus eksistasi, maka dibutuhkan injeksi agar menambah arus arus naik, agar adanya kes-esuaian arus Tujuan penelitian ini adalah untuk menganlisa pengaruh beban terhadap arus eksitasi yang ada. Hasil yang diperoleh adalah beban berpengaruh ter-hadap arus eksistasi, maka dibutuhkan injeksi agar menambah arus arus naik, agar adanya kes-esuaian arus Tujuan penelitian ini adalah untuk menganlisa pengaruh beban terhadap arus eksitasi yang ada. Hasil yang diperoleh adalah beban berpengaruh ter-hadap arus eksistasi, maka dibutuhkan injeksi agar menambah arus arus naik, agar adanya kes-esuaian arus
What Impact Have SARS-CoV-2/Covid-19 Pandemic induced lockdown on the number of OPD patients of Diabetes, Hypertension, Stroke (CVA), Acute Heart Disease, Mental Illness, Epilepsy, Ophthalmic, Dental and oncology in India during the lockdown months (April/May/2020) Observational Research Analysis?
Authors: Kumar Dr Piyush
Published: July 2021

The First human case of the covid-19 global pandemic was reported from Wuhan city of China in December 2019. On 27th January 2020, India found a suspected case of covid-19 in Kerala with a recent travel history of Wuhan; china. The suspected case was reported as positive by the National Institute of Virology located at Pune in Maharashtra, India on January 30, 2020 as positive for COVID-19 infection.  This was the first documented COVID-19 case in India. The government of India responded to this novel disease by enforcing nationwide lockdown starting on 25/03/2020 and ending on 31/05/2020. In this retrospective observational quantitative and qualitative study I have done assessment of the impact of covid-19 lockdown measures on OPD health services for some important non communicable diseases. The data is collected, observed, analyzed for the years 2020 and 2019 and the lockdown period of April-May 2020 is compared with the same duration of 2019 (excluding period of 7 days of lockdown in march) . The OPD (outpatient Department) services for the patients of Diabetes, Hypertension, Stroke (CVA), Acute Heart Disease, Mental Illness, Epilepsy, Ophthalmic, Dental and oncology were selected for this observational retrospective study-analysis. IN VERSION 2 TIME SERIES ANALYSIS (LONGER PERIOD) WILL BE APPLIED TO TEST THE SIGNIFICANCE OF DIFFERENCE BETWEEN PRE AND POST INTERVENTION (LOCKDOWN). The study found as compared to 2019 when lockdown and pandemic was not in existence, 2020 lockdown period have notable reduction in various OPD health services. The study have derived conclusion that lockdown reduced number of OPD patients and hence reduced access to the health services for non-communicable disease which is the major burden of disease in India as well as at global levels. In the final conclusion the author feel the need of more emphasis and priority for NCDs care in any situations of emergency like pandemic and natural calamities, lockdowns etc which usually disrupt routine healthcare. Routine healthcare is very essential in context of chronic diseases which can be converted to acute emergency conditions like CVA.

KEYWORDS: OPD, HEALTH FACILITY, COVID-19, LOCKDOWN,
QUANTUM CHEMICAL SIMULATION OF THE INHIBITORY EFFECT OF AQUEOUS SOLUTIONS OF INORGANIC COPPER(II) SALTS ON THE COMBUSTION OF HYDROCARBONS
Authors: Karvatska M. , Lavrenyuk H. , Parhomenko V.-P. , Mykhalichko B.
Published: July 2021

Introduction. The search for chemicals that would have an effective fire extinguishing effect and the development of new fire extinguishers based on them is an extremely important problem of fire safety. It is known from the literature that new aqueous fire extinguishing agents (AFEAs) based on dissolved inorganic salts of transition metals, in particular, copper(II) chloride salts, have a rather efficient inhibitory effect on the hydrocarbon flame. However, the mechanism of inhibition of hydrocarbon combustion by this class of substances is not completely ascertained. However, it is reliable information about the processes that take place in the flame after the bringing in there of the aerosol of the mentioned AFEA will allow a systematic search for more optimal chemical composition of dissolved inorganic salts of d-metals. Purpose. The purpose of the work is to reveal the peculiarities of the interaction of concentrated aqueous solutions of copper(II) chloride salts with chemically active flame particles.Methods. Quantum chemical calculations of the chemical activity of radicals that appear in the flame and the physicochemical processes that occur in the flame after the bringing on there of AFEA aerosol.Results. The mechanism of a fire-extinguishing effect of aqueous solutions of inorganic copper(II) salts on a hydrocarbon flame is investigated by a calculation method. The sequence of stages of chemical processes that occur in the flame during the inhibiting combustion of hydrocarbons by AFEAs—concentrated solutions of CuCl2 and K2[CuCl4]—and the thermal effects of all reactions that accompany each of these stepwise transformations were ascertained. The stages of the interaction of gaseous Cu2Cl4 molecules with ×OH and ×H radicals in flame with the formation of first a radical-molecular complex and then a molecular complex are decisive in the process of inhibition and display the processes of interruption of chain reactions, i.e. deactivation of radicals in a flame.Conclusion. Thus, using the method of quantum chemical calculations the mechanism of inhibition of hydrocarbon combustion by copper(II) salts was offered. The mechanism of this process is considered to be associative, the decisive elementary act of which is carried out according to the scheme of addition of active radicals of a flame (×OH particles) to gaseous molecules Cu2Cl4 with the formation of radical-molecular complex [{Cu(×OH)Cl2}2] and with its subsequent deactivation by ×H particles.
Integrasi Pendidikan Anti Korupsi Dalam Kegiatan Osis Di SMS Negeri 2 Kota Tanjungpinang
Authors: Rilo Pambudi. S  , Rehendra Sucipta Pery , Syahputra Irwandi
Published: July 2021

The number of corruption cases that occur in Indonesia is not sufficiently countered by repressive means. Preventive measures must also be synergized. The most appropriate effort is to instill anti-corruption values ​​in the younger generation, including high school students. The existence of the Student Council at SMA Negeri 2 Kota Tanjungpinang has an important role in grounding and implementing these values ​​in the school environment. This service was carried out by using the methods of lecturing, discussion, and brainstorming. The results show that the activity has succeeded in achieving its stated goals. This was evidenced by the enthusiasm and high response from the participants. In addition, OSIS SMA Negeri 2 Kota Tanjungpinang has been agreed to become an anti-corruption based OSIS. As astep first, the programs initiated in the discussion session were determined as part of the OSIS work program for SMA Negeri 2 Kota Tanjungpinang.
PRESCRIBING PATTERN OF DRUGS USED IN PAEDIATRIC PATIENTS IN OUTPATIENT DEPARTMENT OF A TERTIARY CARE INSTITUTION
Authors: Hans Nitika
Published: July 2021

Background: Paediatric prescription is a major concern in terms of public health since infections are the most frequent cause of childhood disease. The aim of this hospital-based observational prospective study was to assess the pattern of drug use in the paediatric outpatient department attached to government medical college, Amritsar.  

Methods: A prospective study of six months duration was carried out for the month of October 2020 to March 2021. A total number of 201 patients case sheets were utilized for our study from paediatric out-patients department of GNDH, Amritsar. The data collected was then analysed for various prescribing indicators as laid down by world health organisation (WHO) for analysis of drug use parameters.

Results:  The average number of drugs per encounter was 2.52. In present study antibiotic were 18% of total drugs prescribed. Antihistaminics prescribed were 25%. Syrup was the most prescribed dosage form.  %age of drugs prescribed from essential drugs list was 60.3%.  Polypharmacy was evident from the study.

Conclusions: Drug prescribing in children is relatively high in GNDH, Amritsar. This study revealed deviation in prescribing pattern from WHO core prescribing indicators. Possible reasons are heavy patient load, lack of essential drug list, insufficient government supply of generic drugs and lack of regular prescription audits.

Keywords: prescription pattern, observational study, Paediatric, WHO core prescribing indicators.
MAINTENANCE OF HOMEOSTASIS – AN OBSERVATIONAL STUDY COMPARING BIPOLAR AND MONOPOLAR TURP
Authors: K. Maurya Rajesh , Vinay Kumar , Vinay Kumar
Published: July 2021

Introduction: Common cold is frequently occurring medical condition in developing countries like India. Common cold is self-limiting in nature so symptomatic treatment is always suggested. This study was conducted to test the efficacy and safety for the fixed dose combination of Paracetamol 500 mg, Phenylephrine Hydrochloride 10 mg and Chlorpheniramine Maleate 2 mg per tablet for the treatment of common cold.

Methodology: Total 180 patients were enrolled out of which 159 completed the study. Efficacy assessment was done by decrease in total symptom score (TSS) of common cold at day 3 and 5 as compared to the baseline (day 1). Safety assessment was made by analyzing the reported adverse events through the study.

Results: Mean TSS at baseline was 6.62 which was decreased to 3.55 at day 3 and was further decreased to 0.68 at day 5. Majority of patients had complete relief from the symptoms of common cold and nearly all the patients had >50 % reduction in TSS. Also no unexpected or serious adverse event was found to be reported in the study duration of 5 days.

Conclusion:  Fixed dose combination of Paracetamol 500 mg, Phenylephrine Hydrochloride 10 mg and Chlorpheniramine Maleate 2 mg per tablet was found to be efficacious and safe for the symptomatic treatment of common cold in Indian patients.

Keywords: Common cold, Paracetamol, Chlorpheniramine Maleate and Phenylephrine