bluuebunny/crossref_metadata_2025_split huggingface dataset:
ANALYSIS OF THE CAUSES OF DEFECTS IN THE MANUFACTURE PROCESS IMPROVING PRODUCTION QUALITY IN PIRN WINDER MACHINE BY USING STATISTICAL PROCESS CONTROL (SPC) METHOD AT PT. XYZ MAJALENGKA
Authors: Indra Permana Satrio , Whydiantoro  , Rizanuddin N Hafni , Budiman  , Kusumadewi Intan 
Published: June 2023

In manufacturing companies, production activities are a very important activity. If the production activities produce a lot of defective products, it will cause losses in the form of additional time and raw material costs for repairing these defective products, so that quality control is needed so that the company can produce products that comply with predetermined quality standards.
This final project research was conducted at PT. XYZ Majalengka where this company is engaged in the service industry, production activities at PT. XYZ Majalengka is carried out based on a make to order response demand strategy, namely the company carries out production activities when there are orders from consumers. This research focuses on the production process of the pirn winder machine which functions to wind yarn raw materials according to the desired weight and according to the available TFO capacity (700 gr, 714 gr, 1000gr or 1500gr).
However, regardless of production quality standards on the pirn winder machine, it does not rule out the possibility that defects will always occur. Therefore it is necessary to have quality control in the production process of this pirn winder machine. Its function is clear to reduce the number of defects and improve the quality of production produced.
Statistical Process Control (SPC) is a statistical analysis used for quality control, starting from monitoring, analyzing, predicting, controlling and improving the production process and product quality through control charts. Statistical quality control using SPC (Statistical Process Control) has seven statistical tools that can be used as tools to control quality, namely, check sheets, histograms, P control charts, pareto diagrams, cause and effect diagrams, scatter diagrams, and diagrams. process.
Technology for determining non-humanities university students' cognitive-and-psychological characteristics
Authors: Chernova N. I. , Ivanova E. A. , Bogush N. B. , Katakhova N. V. 
Published: June 2023

Objectives. The purpose of this work was to create a special entrance test for first-year students starting to learn a new foreign language. To achieve the research objective, the study analyzed data on testing language/linguistic proficiency and motivation for learning a foreign language. A range of test parameters identifying both abilities and motivation to learn a foreign language in general, but not related to learning a specific language, were highlighted. The identified parameters were used to inform a questionnaire tested on a group of students, whose level of abilities and motivation had already been ascertained. The findings about students were compared with the already known empirical data to support the improvement of test items.Methods. To describe a special entrance test for first-year students starting to learn a new foreign language in a non-humanities higher education institution, a test technology for identifying certain cognitive, psychological, intellectual, motivational characteristics of a student's language personality was created. The developed test parameters served as the basis for constructing several heterogeneous test blocks.Results. The initial version of the test obtained was verified by pilot testing first-semester-first-year students. Expert assessments of the foreign language potential learning on the part of students were used to evaluate the reliability and validity of the test. A subsequent correction of tasks and responses was carried out in light of the verification results.Conclusions. A recommendation to conduct this kind of testing prior to the first semester with the aim of forecasting the success of foreign-language educational activities of students enrolled in the foreign language study group from the “starter” level is formulated. The results of such diagnostics can be used to draw up personified adaptive training programs within the educational process.
Effect of synchronization system errors on the reception noise immunity of amplitude-phase shift keyed signals
Authors: Kulikov G. V. , Dang X. Kh. , Kulikov A. G. 
Published: June 2023

Objectives. An urgent task in the context of modern radio and television systems is to improve the quality and quantity of transmitted information. For example, the use of multiple amplitude-phase shift keyed (APSK) signals—16-APSK and 32-APSK—in digital satellite television systems of the Digital Video Broadcasting-Satellite2 (DVB-S2) standard made it possible to transmit 30% more data in the same frequency bands in comparison with the previous DVB-S standard. Such increases in information transmission rates impose more stringent requirements on hardware. An important role in the reception of APSK signals, as well as the signals of other coherent signal processing systems, is played by the stability of synchronization systems. The presence of operational errors can significantly reduce the quality of information reception. The aim of the present work was to analyze the effect of phase and clock synchronization errors on the reception noise immunity of APSK signals with a ring signal constellation structure.Methods. The study used statistical radio engineering methods informed by optimal signal reception theory.Results. The effect of phase and clock synchronization errors on the reception noise immunity of APSK signals having a signal constellation ring structure is analyzed. The dependencies of the bit error probability on the magnitude of the phase shift and the clock offset were characterized. The effect of synchronization errors on reception quality were compared with the known results for quadrature amplitude modulation (QAM) signals.Conclusions. At an acceptable energy loss of no more than 1 dB, the critical phase error can be considered as 2°-3°, while the critical clock error is 3-4%. A coherent receiver of APSK signals is more sensitive to the phase error of reference oscillations than a similar receiver of QAM signals, whereas clock errors have the same effect on the reception quality of these signals.
Dispersion of optical constants of Si:PbGeO crystal in the terahertz range
Authors: Bilyk V. R. , Brekhov K. A. , Agranat M. B. , Mishina E. D. 
Published: June 2023

Objectives. Advances in laser physics over the last decade have led to the creation of sources of single-period electromagnetic pulses having a duration of about 1 ps, corresponding to the terahertz (THz) frequency range and a field amplitude of several tens of MV/cm. This allows the electrode-free application of an electric field to a ferroelectric for observing not only the excitation of coherent phonons, but also ultrafast (at the sub-picosecond timescale) dynamic polarization switching. To detect polarization switching, a pump-probe technique is used in which a THz pulse is used with an optical probe. Since its intensity is proportional to the square of the polarization, the signal of the optical second harmonic is used to measure polarization switching under the action of a THz pulse. To evaluate switching efficiency, both linear (refractive index and absorption coefficient) and non-linear optical characteristics (quadratic and cubic susceptibilities) are required. For any application of ferroelectric crystals in the THz range, knowledge of the relevant linear optical characteristics is also necessary.Methods. The technique of THz spectroscopy in the time domain was used; here, a picosecond THz pulse transmitted through the crystal is recorded by strobing the detector with a femtosecond optical pulse. The THz-induced dynamics of the order parameter in a ferroelectric was studied by detecting the intensity of a nonlinear optical signal at the frequency of the second optical harmonic.Results. The transmission of a THz wave and the intensity of second harmonic generation on a lead germanate crystal doped with silicon in the time and spectral domains were measured. On this basis, the absorption coefficient dispersion and cubic nonlinear susceptibility were calculated in the range of 0.5-2.0 THz. The presence of a region of fundamental absorption near the phonon modes was confirmed along with a resonant enhancement of the cubic nonlinear susceptibility for two phonon modes Ω1 = 1.3 THz and Ω2 = 2.0 THz.Conclusions. The proposed technique is effective for analyzing the dispersion of the optical characteristics of ferroelectric crystals. The significantly improved spectral resolution (0.1 THz) increases the accuracy of determining nonlinear susceptibility due to the detailed analysis of the linear and nonlinear contributions to the second harmonic intensity.
Method for synthesizing a logic element that implements several functions simultaneously
Authors: Sovetov S. I. , Tyurin S. F. 
Published: June 2023

Objectives. The basic element of a field-programmable gate array is a lookup table (LUT). While in canonical normal form LUTs generally implement only one logical function for a given configuration, in this case, there is always an inactive pass transistor element. Moreover, using a single LUT for a single function reduces system-on-a-chip (SoC) scalability. Therefore, the purpose of the present work is to develop a LUT structure for implementing several logic functions simultaneously on inactive transmitting transistors.Methods. The evolution of LUT structure is presented for three variables, in which the number of simultaneously implemented functions increases. To implement additional functions, the logical device was decomposed with a different number of variables. The structures were modeled in the Multisim electrical simulation system.Results. The presented simulation of more than two logic functions on inactive parts of the LUT shows the simultaneous operation of two and four logic functions. The complexity for a different number of variables and number of implemented functions is compared.Conclusions. The simulation results demonstrate the operability of LUT structures in which several logical functions are performed. Thus, when implementing additional functions in the new structure, a smaller number of transmitting transistors is required as compared to a conventional LUT, thus increasing device functionality. The presented solution can be used to increase the number of simultaneously implemented functions of the same variables, which can be important e.g., when implementing code transformations.
Statistical model for assessing the reliability of non-destructive testing systems by solving inverse problems
Authors: Alexandrov A. E. , Borisov S. P. , Bunina L. V. , Bikovsky S. S. , Stepanova I. V. , Titov A. P. 
Published: June 2023

Objectives. The wear monitoring of metal structural elements of power plants—in particular, pipelines of nuclear power plants—is an essential means of ensuring safety during their operation. Monitoring the state of the pipeline by direct inspection requires a considerable amount of labor, as well as, in some cases, the suspension of power plant operation. In order to reduce costs during monitoring measures, it is proposed to use mathematical modeling. This work aimes to develop a mathematical model of a diagnostic system for assessing the probability of detection of defects by solving inverse problems.Methods. A binomial model for assessing the reliability of monitoring, comprising the Berens-Hovey parametric model of the probability of detection of defects and a parametric model based on studying test samples, was analyzed. As an alternative to this binomial model, a computational method for assessing the reliability of non-destructive testing systems by solving an inverse problem was proposed. To determine the parameters of the defect detection probability curve, the model uses data obtained by various monitoring teams over a long period of power plant operation. To serve as initial data, the defect distribution density over one or more of the following characteristics can be used: depth, length, and/or cross-sectional area of the defect. Using the proposed mathematical model, a series of test calculations was performed based on nine combinations of initial data. The combinations differed in the confidence coefficient of the initial monitoring system, the parameters of the distribution of defects, and the sensitivity of the monitoring system.Results. The calculation data were used to construct curves of the probability density of detected defects as a function of the defect size, recover the values of the defect distribution parameters under various test conditions, and estimate the error of recovering the parameters. The degree of imperfection of the system was estimated using the curve of the detection probability of a defect by a certain monitoring system.Conclusions. Under constraints on the data sample size, the proposed methodology allows the metal monitoring results to be applied with greater confidence than currently used methods at the same time as evaluating the efficiency of monitoring carried out by individual test teams or laboratories. In future, this can be used to form the basis of a recommendation of the involvement of a particular team to perform diagnostic work.
Mathematical modeling of experiments on the interaction of a high-power ultraviolet laser pulse with condensed targets
Authors: Lebo I. G. 
Published: June 2023

Objectives. The paper aimed to review and analyze the results of works devoted to numerical modeling of experiments on the interaction of high-power ultraviolet (UV) laser pulses with condensed targets. The experiments were carried out at GARPUN, the powerful KrF-laser facility at the P.N. Lebedev Physical Institute of the Russian Academy of Sciences (Moscow). The relevance of the research is related to the use of excimer UV lasers as a driver for a thermonuclear reactor. Physical aspects of laser-plasma interaction, including those related to the possibility of using two-sided cone target in a fission-fusion reactor, are discussed.Methods. The research is based on physico-mathematical models, including Euler and Lagrange.Results. The mathematical modeling of three types of natural experiments is presented: (1) burning through different thicknesses of Al foils by high-power UV laser; (2) studying hydrodynamic instability development at the UV laser acceleration of thin polymer films and features of turbulent zone formation; (3) interaction of high-power UV laser pulses with two-layer targets (Al + Plexiglas) and study of fine structures. Numerical modeling showed that a hybrid reactor with UV laser driver can use targets in the form of two-sided counter cones.Conclusions. Physico-mathematical models are developed along with 2D codes in Lagrangian and Eulerian coordinates as confirmed in the results of natural experiments. The models can be used to describe the physics of high-power UV laser pulses interacting with various targets and forecast the results of reactor-scale experiments.
PENGARUH KUALITAS PELAYANAN RELIABILITY, RESPONSIVENESS DAN ASSURANCE TERHADAP KEPUASAN PASIEN RUMAH SAKIT MUHAMMADIYAH
Authors: Herudiansyah Gumar , Fitantina Fitantina , Suandini Monica 
Published: June 2023

Purpose– This study aims to determine the effect of Reliability, Responsiveness and Assurance simultaneously and partially on Patient Satisfaction at Muhammadiyah Hospital Palembang. Design/methodology– This study used 100 samples, the sampling technique used a non-probability sampling technique by means of purposive sampling. The type of research used is associative, the data used are primary data and secondary data. Data collection techniques used are questionnaires and documentation. The analysis technique used is Multiple Linear Regression analysis, F test, t test and the coefficient of determination. The results of the Multiple Linear Regression analysis of the Reliability, Responsiveness and Assurance variables have a positive regression coefficient meaning that Reliability, Responsiveness and Assurance have a positive influence on changes in patient satisfaction Findings - The results of the F test analysis conducted showed that there was a significant effect of Reliability, Responsiveness and Assurance on Patient Satisfaction at Muhammadiyah Hospital Palembang. The results of the partial t hypothesis test show that Reliability, Responsiveness or Assurance have a significant effect on Patient Satisfaction. The coefficient of determination analysis showed that 83.8% of changes in patient satisfaction were caused by the large contribution of the independent variables to the dependent variable in the study, while the remaining 16.2% was caused by other variables not included in this study..
Pelatihan Brisk Walking Exercise untuk Menurunkan Mortalitas dan Morbiditas pada Pasien Lansia Hipertensi dan Diabetes Melitus di Genuk Indah, Kota Semarang
Authors: Abduh Muhammad Saugi , Widyastuti Retno , Triono Muhammad Rizki 
Published: June 2023

ABSTRAK Hipertensi dan Diabetes Melitus merupakan penyakit pada lansia yang memiliki prevalensi yang cukup tinggi secara nasional dan juga di Jawa Tengah. Dampak dari tingginya hipertensi dan diabetes melitus pada lansia memicu komplikasi seperti penyakit jantung, stroke yang akan meningkatkan mortalitas dan morbiditas. Olahraga atau exercise pada lansia salah satunya Brisk Walking Exercise. Brisk walking exercise atau berjalan cepat berdampak pada penurunan risiko mortalitas dan morbiditas. Pengetahuan mengenai Brisk Walking Exercise pada pasien Lansia dengan Hipertensi dan Diabetes Melitus masih belum banyak dimengerti. Meningkatkan pengetahuan dan kemampuan untuk melakukan Brisk Walking Exercise pasien Lansia Hipertensi dan Diabetes Melitus di Genuk Indah, Kota Semarang. penyuluhan dan pelatihan kepada bapak dan ibu pasien Lansia Hipertensi dan Diabetes Melitus, tanya jawab, dan konsultasi kesehatan. Penyuluhan dengan menggunakan flyer brosur dan gambar yang menarik sasaran. Didapatkan peningkatan pemahaman mengenai Brisk Walking Exercise sebanyak 30% dari audiens. Pada akhir kegiatan ini, para audiens peserta kegaitan telah mengalami peningkatan pengetahuan dan kemampuan mengenai Brisk Walking Exercise yang berperan untuk menurunkan mortalitas dan morbiditas Hipertensi dan Diabetes Melitus Kata Kunci: Brisk Walking Exercise, Hipertensi, Diabetes Melitus. ABSTRACT Hypertension and Diabetes Mellitus are diseases in the elderly whose prevalence is quite high nationally and also in Central Java. The impact of high hypertension and diabetes mellitus in the elderly triggers complications such as heart disease, stroke which will increase mortality and morbidity. One of the exercise for the elderly is the Brisk Walking Exercise. Brisk walking or fast walking exercises have an impact on reducing the risk of mortality and morbidity. Knowledge about brisk walking exercises in elderly patients with hypertension and diabetes mellitus is still not widely understood. To increase knowledge and ability to do the Brisk Walking Exercise for Elderly Hypertension and Diabetes Mellitus patients at Genuk Indah, Semarang City. The method used is counseling to audience of elderly patients with hypertension and diabetes mellitus, questions and answers, and health consultations. There was an increase in understanding of the Brisk Walking Exercise by 30% of the audience. At the end of this activity, the audience participating in the activity had an increase in knowledge and ability regarding Brisk Walking Exercise which plays a role in reducing mortality and morbidity in Hypertension and Diabetes Mellitus. Keywords: Brisk Walking Exercise, Hypertension, Diabetes Mellitus
Upaya Peningkatan Peran Kader dalam Pencegahan dan Penanggulangan Kejadian Malaria di Wilayah Kerja Puskesmas Maja Kabupaten Pesawaran
Authors: Huda Misbahul , Sugiarti Mimi , Yuniza Filia 
Published: June 2023

ABSTRAK Salah satu puskesmas yang berada di daerah endemik malaria di Kabupaten Pesawaran adalah Puskesmas Maja. Daerah tersebut letaknya berdekatan dengan laut, banyak lokasi tambak tidak terawat yang menjadi tempat berkembangbiak nyamuk, minimnya pengetahuan kader tentang penyakit malaria serta kurangnya informasi masyarakat tentang cara pencegahan penyakit malaria, menjadi beberapa penyebab tingginya angka kejadian di wilayah kerja Puskesmas tersebut. Pemilik program malaria juga berpendapat bahwa penemuan kasus baru malaria akan semakin cepat, oleh karena itu dipandang perlu untuk meningkatkan kapasitas kader dalam melakukan diagnosa malaria. Untuk mengedukasi masyarakat dan melakukan pelatihan kader sebagai upaya menanggulangi dan memberantas malaria di wilayah kerja Puskesmas Maja. Penyuluhan kepada masyarakat, pelatihan kader, pemberian perlengkapan guna memutus mata rantai penyebaran malaria, serta pemberian kelambu berinsektisida. Setelah pelaksanaan kegiatan pengabdian, terlihat jelas bahwa pengetahuan dan pemahaman para peserta meningkat secara signifikan. Peningkatan ini bernilai amat baik karena peserta sangat antusias dan menyambut dengan baik terhadap kegiatan yang akan dilakukan. Kegiatan pengabdian masyarakat ini berhasil menambah pengetahuan dan pemahaman peserta mengenai malaria. Kata Kunci: Edukasi Masyarakat, Malaria, Pelatihan Kader ABSTRACT One of the puskesmas located in a malaria endemic area in Pesawaran Regency is the Maja Health Center. The area is located close to the sea, there are many unkempt ponds which are breeding grounds for mosquitoes, the lack of knowledge of cadres about malaria and the lack of public information about how to prevent malaria are some of the reasons for the high incidence rate in the work area of the Puskesmas. The owner of the malaria program also believes that the discovery of new cases of malaria will accelerate, therefore it is deemed necessary to increase the capacity of cadres in diagnosing malaria. To educate the public and conduct cadre training as an effort to tackle and eradicate malaria in the working area of the Maja Health Center. Counseling to the community, training for cadres, providing equipment to break the chain of malaria transmission, and providing insecticide-treated nets. After the implementation of community service activities, it was clear that the knowledge and understanding of the participants had increased significantly. This increase is of very good value because the participants are very enthusiastic and welcome the activities to be carried out. This community service activity succeeded in increasing the participants' knowledge and understanding of malaria. Keywords: Community Education, Malaria, Cadre Training