bluuebunny/crossref_metadata_2025 huggingface dataset:
CONSUMER COMPLAINT BEHAVIOUR IN INDONESIA: ROLE OF KNOWLEDGE AND SELF-CONFIDENCE
Authors: Azizah Sheila Nur , Simanjuntak Megawati , Muflikhati Istiqlaliyah
Published: February 2022

Complaint behavior is a person's response to dissatisfaction with the goods or services used. Complaints are feedback from customers that tend to be negative towards the company. Self-confidence can be interpreted as one aspect of personality in the form of belief in one’s abilities so that others do not influence him, can act according to his will, are happy, optimistic, relatively tolerant, and responsible. This study generally aims to analyze the effect of knowledge and self-confidence on complaints in Indonesia. The study used a cross-sectional study design. The samples were married or employee consumers aged between 17 to 60 years determined by multi-stage random sampling. The number of samples in this study was 2.100 respondents. This study used descriptive analysis, independent t-test, and SEM using Linear Structural Relationship (LISREL) 8.72. The findings of this study indicate that the knowledge and respondents' complaint behavior are relatively low, whereas self-confidence was in the moderate category. Knowledge had a significant effect on complaint behavior but insignificant on self-confidence. Other results also indicate that self-confidence had no significant effect on complaint behavior.
Evaluation of the Isometric and Dynamic Rates of Force Development in Multi-Joint Muscle Actions
Authors: Martinopoulou Klimentini , Donti Olyvia , Sands William , Terzis Gerasimos , Bogdanis Gregory
Published: February 2022

The rate of force development (RFD) in the isometric leg press (ILP), the countermovement jump (CMJ) and the squat jump (SJ) were examined in twenty-three (9 females) team sport athletes aged 21-24 years. Peak force (Fpeak), peak rate of force development (RFDpeak) and RFD at different time epochs (0-50, 50-100, 100-150, 150-200) were calculated from the force-time curve, as well as CMJ and SJ height and the center of mass displacement. RFDpeak, RFD at 0-50, 50-100 and 100-150 ms and Fpeak were similar between the CMJ and the SJ (p = 0.26 to 0.99). Furthermore, RFD0-50 ms was similar between the ILP, the CMJ, and the SJ (p = 0.99 to 0.57). Higher values were observed in the ILP compared with the CMJ and the SJ in RFD50-100 ms and RFD100-150 ms (p < 0.001) and these differences were maintained even when RFD was scaled to body mass. The higher RFD normalized to Fpeak was attained at the 50-100 ms time interval with no differences between the ILP, CMJ and SJ and between males and females. These results suggest that the ability to exert rapid force is similar between the CMJ and the SJ, irrespective of the type of muscle action. Furthermore, RFD normalized to Fpeak is a muscle-force independent index of explosive force production, facilitating comparisons between individuals with different levels of muscle strength. The similarities between the CMJ and the SJ in RFDpeak, Fpeak, and RFD at different time epochs may imply that these types of jumps could be used interchangeably to assess explosive lower limb performance.
Thigh Muscularity and Sprinting Performance of National‐Level Long‐Distance Runners
Authors: Ando Ryosuke , Tanji Fumiya , Ohnuma Hayato , Ikeda Tatsuaki , Yamanaka Ryo , Suzuki Yasuhiro
Published: February 2022

Long-distance runners require aerobic capacity as well as sprinting ability for superior performance; however, the factors which determine the sprinting ability of long-distance runners remain undetermined. Therefore, the purpose of our study was to examine the association between thigh muscle size and sprinting ability in national-level male long-distance runners. Nineteen male long-distance runners with 5000 m personal-best times of 13:12.63–14:14.87 participated in this study, and transaxial images of their right thighs were collected using magnetic resonance imaging. The cross-sectional areas of the quadriceps femoris, hamstrings, and adductor muscles were calculated from the transaxial images at 30%, 50%, and 70% of the distance from the greater trochanter to the lower edge of the femur; these areas were normalized by body mass. Sprint times for 100 m and 400 m were recorded on an all-weather track. The results revealed positive correlations between the normalized cross-sectional areas of the quadriceps femoris at 50% and 70% of the thigh length and the 100 m (r = 0.666, p = 0.002 and r = 0.531, p = 0.019, respectively) and 400 m sprint times (r = 0.769, p < 0.001 and r = 0.580, p = 0.009, respectively); hence, the larger the quadriceps, the slower the sprint speed. However, no association was found between the normalized cross-sectional areas of the hamstrings or adductor muscles and sprinting performance. Therefore, running motions which activate the quadriceps femoris much more than the hamstrings and adductor muscles should be avoided by national-level long-distance runners.
Seasonal Training Load Monitoring Among Elite Level Soccer Players: Perceived Exertion and Creatine Kinase Variations Between Microcycles
Authors: Mendes Bruno , Clemente Filipe , Calvete Francisco , Carriço Sandro , Owen Adam
Published: February 2022

The primary aim of the investigation was to determine the daily load variations between the microcycles of an entire season of an elite group of professional soccer players. The second aim of this study was to determine the relationships between Foster’s rating of perceived exertion (RPE), the Hooper index (HI) and CK levels over the weekly microcycles of the season. Thirty-five male professional soccer players participated in this study (3 goalkeepers, 6 wide defenders, 4 central defenders, 9 midfielders, 8 wide midfielders and 4 forwards) (25.7 ± 5.0 years, 182.3 ± 6.4 cm; 79.1 ± 7.0 kg). Significant differences between months in the variables of HI (p = 0.001; ES = 0.052), minT (p = 0.001; ES = 0.066), IL (p = 0.001; ES = 0.052, minimum effect) and CK (p = 0.002; ES = 0.031) were found. Comparison of the HI (p = 0.044; ES = 0.002), minT (p = 0.001; ES = 0.045), and IL (p = 0.001; ES = 0.045) revealed significant differences between microcycles. No significant differences were found in CK (p = 0.710; ES = 0.001) across the period. A significantly higher internal training load and fatigue perception in microcycles with only one official match was found. The greater load occurred 3 to 4 days before the game. In addition, it can be concluded that the first quarter of the season seemed to induce a greater physical demand on elite professional players.
Variations in Internal and External Training Load Measures and Neuromuscular Performance of Professional Soccer Players During a Preseason Training Period
Authors: Pereira Lucas , Freitas Tomás , Zanetti Vinicius , Loturco Irineu
Published: February 2022

We described the internal and external training loads (TLs) experienced by soccer players over a 4-week preseason, examined their effects on vertical jump (VJ) performance, and investigated the relationships between different TL variables. Eighteen professional soccer players performed 17 training sessions and 1 friendly-match (FM) over the preseason. The internal TL was obtained using the session-rating of perceived exertion method. The external TL variables collected were total and high-intensity distances, body-load, and high-metabolic power distance via the GPS system. VJ performance was assessed 13 times throughout the study. Moreover, total quality recovery and delayed onset muscle soreness were assessed before every training session as a measure of recovery status. Players were divided, using a median split analysis, into two groups, according to their VJ performance (i.e., “lower” and “higher” VJ). External TL variables displayed similar variations across training sessions and were significantly interrelated (r ranging from 0.48 to 0.88). In periods where higher internal TLs were detected, impaired recovery status was noticed. Notably, the higher VJ group exhibited decreased jump performance at post-test and higher internal and external TLs across the entire preseason (compared to the lower VJ group). From our results it is suggested that professional soccer players with higher VJ performance are potentially more susceptible to concurrent training effects.
Small-Sided Soccer Games with Larger Relative Areas Result in Higher Physical and Physiological Responses: A Systematic and Meta-Analytical Review
Authors: Praça Gibson , Chagas Mauro , Bredt Sarah , Andrade André
Published: February 2022

This study aimed to systematically review the influence of the relative area on athletes’ physical and physiological responses (outcomes) during small-sided games of soccer which were not matched to the relative area. It also presents a meta-analysis comparing standard small-sided games protocols with different relative areas. We searched the Web of Science and Scopus electronic databases for literature published up to March 2020 following all PRISMA guidelines for selecting articles for a qualitative and quantitative synthesis. As a result, eleven articles matched the inclusion criteria. For the quantitative synthesis, a pooled random-effects model was used to make pairwise comparisons between protocols with larger or smaller areas in each selected study. Prediction intervals were used to assess the heterogeneity. We found positive effects of larger relative areas per player on their total distance (d = 0.73; 95% CI = 0.12–1.34; p = 0.006; medium to large effect), distance covered at high speed (d = 0.93; 95% CI = 0.22–1.65; p = 0.001; large effect), and mean heart rate (d = 0.52; 95% CI = 0.17–0.88; p = 0.008; medium effect). In other words, larger relative areas were found to induce higher physical and physiological responses in players. Future studies should consider the relative area per player when comparing data for different small-sided games configurations to avoid confounding variables. Also, coaches can use relative area per player calculations to easily predict increases and decreases in expected training loads for different versions of SSGs during training.
Interacting Constraints and Relative Age Effect in Elite Cross-Country Skiers and Freeskiers
Authors: Roaas Truls , Lorås Håvard , Aune Tore , Flakken Boye , Dalen Terje
Published: February 2022

Different characteristics of sports disciplines potentially lead to skewness in birth month distribution (relative age effect, RAE). These characteristics can be considered from a constraint-based approach with interacting environmental, task, and individual constraints as a theoretical framework with which to examine variations in RAE. The main aim of the present study was to examine the theoretical predictions of the constraint-based framework by investigating the birth month distribution in cross-country skiers and freeskiers at elite junior and senior levels. The sample was comprised of top ranked Norwegian U15–U19/20 cross-country skiers and junior-level freeskiers. Birth months of top ranked international senior-level skiers in cross-country and freeskiing were also collected. Results indicated an over-representation of skiers born in the first half versus the second half of the year at all junior ages in cross-country skiing. There was no significant difference in the distribution of birth months in freeskiing or in senior cross-country skiers or freeskiers. Based upon the interacting constraint framework, the skewness towards more early-born athletes in junior cross-country skiing could be due to strict age-grouped and results-oriented developmental programs beginning at an early age (environmental constraints) as well as high-demand for physical capabilities (task constraints) that favour more physically mature athletes (individual constraints). For freeskiing, the interacting environmental (less structured and more individualistic-oriented development), task (high technical/motor skill demands), and individual (no advantage of advanced physical maturation) constraints potentially operate in the opposite direction compared to cross-country skiing.
Study on NH3-SCR of Cerium-based Substances in Rare Earth Concentrates from Bayan Obo
Authors: Li Na , Zhang Shenghan , Wu Wenfei
Published: February 2022

In this paper, CePO4 and CeCO3F were prepared by hydrothermal synthesis based on the ratio of bastnaesite to monazite in the process mineralogy of Baiyun Ebo rare earth concentrate. A comparison of the two treatments, ball milling and ball milling sulphation, revealed that the denitrification efficiency of the catalysts treated with ball milling sulphation increased by 20 percentage points, compared to those treated without sulphation, with denitrification efficiencies of up to 80%. The surface properties, redox properties and catalytic mechanism of the samples before and after the sulphation treatment were analyzed, by using XRD, NH3-TPD, H2-TPR, XPS and in situ IR characterization. The results showed that the CeF3 diffraction peaks in the XRD patterns disappeared in the sulphated samples, NH3-TPD showed that the adsorption capacity of NH3 on the surface of the samples was enhanced, and the introduction of sulphuric acid provided a large number of acidic sites on the catalyst surface, among which the Lewis acidic sites might be more favorable for the promotion of SCR reaction. The acidification of sulphuric acid greatly increases the redox capacity of the catalyst, and the interconversion between Cen+ was enhanced. XPS showed a significant increase in the amount of adsorbed oxygen on the surface of the sample. The presence of -NO2, an important intermediate in the L-H mechanism, was also detected by IR analysis. reactant species during the L-H mechanism reaction were monodentate nitrate, bridged nitrate and NH4
+ species produced by NH3 adsorption on the Brønsted acidic site of the catalyst surface.
Evaluation of sand p–y curves by predicting both monopile lateral response and OWT natural frequency
Authors: Amel Douifi , Djillali Amar Bouzid , Subhamoy Bhattacharya , Nasreddine Amoura
Published: February 2022

Extending the use of the p–y curves included in the regulation codes API and DNV to design large-diameter monopiles supporting offshore wind turbines (OWTs) was unsuccessful as it resulted in an inaccurate estimation of the monopile behavior. This had prompted many investigators to propose formulations to enhance the performances of Winkler model. In this paper, two case studies are considered. A case consisting of an OWT at Horns Rev (Denmark) supported by a monopile in a sandy soil was studied first. Taking the FEA using ABAQUS as reference, results of WILDOWER 1.0 (a Winkler computer code) using the recently proposed p–y curves giving design parameters were plotted and evaluated. In order to see the ability of proposed p–y curves to predict the monopile head movements, and consequently the first natural frequency (1st NF), a second case study consisting of a monopile supporting an OWT at North Hoyle (UK) was selected. The monopile head stiffness in terms of lateral, rocking, and cross-coupling stiffness coefficients, necessary for the 1st NF, were computed using both ABAQUS and WILDPOWER 1.0. Comparisons with the measured 1st NF showed that with the exception of one p–y model, none of other proposed Winkler methods is able to predict accurately this parameter.
Relationship between lower limb power and dynamic stability in volleball players
Authors: Reitmayer Hans-Eric , Monea Dan
Published: February 2022

Introduction

As in all team sports, lower limb power is an important quality of any player. Especially when it comes to volleyball, a game that relies on jumping performance on almost every action except reception. Another crucially important quality of the lower limbs is dynamic stability. Without the latter, the frequency of injuries rises, and that is something any coach or player wants to avoid. The question arises: Are the two qualities related?

Aim

The study aimed to investigate the correlation between lower limb power and force measured using an inertial flywheel training/measuring device and dynamic stability evaluated through the Y balance test.

Material and method

The Y balance test was used for evaluating the lower limb dynamic stability of 8 Romanian volleyball players. In addition, using an inertial flywheel training system (kBox 4 Pro, Exxentric, Sweden) and kMeter II measuring device the following parameters where measured: average force AvF (N), average power AvP (W), concentric peak power ConPP (W), eccentric peak power EccPP(W). The relative peak power RPP (W/kg) was calculated by dividing concentric peak power by the weight of the volleyball player. The subjects performed 8 maximal squats using the kBox harness and the L (0,05 kgm2) flywheel

Results

Composite reach distance (CRD) means for the lower limbs have been compared using the t-test and although there is a difference of 1.8%, it isn’t significant, (p<0,001). We have found a direct correlation between the average composite reach distance and relative peak power (r=0.71, p=0.045) and also with the average power (r=0.75, p=0.032) of the lower limbs. The composite reach distance for the right leg correlates with the relative peak power (r=0.73, p=0.036); average force (r=0.73, p=0.039), and average power (r=0.77, p=0.024). For the left leg, however, the only correlation found with the CRD is the average power (r=0.75, p=0.044).

Conclusions

The medium composite reach distance CRDM is directly correlated with the average lower limb power and relative peak power but due to the small sample size, the power of this effect is unknown. CRDR (right leg) significantly correlates with relative peak power, average power but also with average force whereas CRDL (left leg) only correlates with average power. This does not come as a surprise because all the subjects are right side dominant. There is no significant difference between CRDR and CRDL p<0.001. This is quite important because stability asymmetries of the lower limbs may lead to injury.
Development of the body scheme in children in primary education: a systematic narrative review of the influence of an intervention plan on this psychomotor component
Authors: Șunei Mariana Cristina , Nagel Adrian , Petracovschi Simona
Published: February 2022

Aim

The purpose of this review is to summarize the scientific literature that examined the importance of physical activity programs in the development of body scheme in primary school students by identifying methods and tests used to test body scheme on motor development, spatial-temporal orientation and coordination.

Method

Using the electronic databases Research Gate and Web of Science, we searched for articles using key words, including terms related to methods, intervention plan, children’s age and body schemes. We selected only those that followed the influences of an intervention plan on children.

Results

We selected 30 articles regarding the development of the body scheme, the spatial-temporal orientation and the coordination through an activity plan. The study results in the three categories show a significant influence on body scheme, spatial orientation and coordination. Following the tests applied and the results obtained, we can say that a well-structured program of physical activity influences the child’s development in terms of body scheme. If it is correctly integrated, one can avoid the existence of body diagram disorders that are quite common for children.

Conclusion

The harmonious physical development of the child is influenced by a program of physical activity. Early participation in these programs is recomended in order to avoid disorders of body scheme.
ARE ROMANIAN TOURISM COMPANIES PREPARED FOR DIGITAL
TRANSFORMATION? A RESEARCH STUDY IN TIMIS COUNTY
Authors: Musteață-Pavel Marioara , Surugiu Camelia , Lixăndroiu Cristina
Published: February 2022

Information and Communication Technology — ICT (i.e., computers and laptops, tablets, mobile phones,
smartphones, software, audio-visual systems, wireless, VOIP, GIS, GPS, mobile app, analytical tools, augmented
reality systems, holograms, virtual reality technologies) and ˗ mainly ˗ online information sources (multiplatform
web pages, search engines, social media platforms) have changed how distribution, selling and consumption
processes work. This also involved a revolution in how travel-related information is searched. Digital technologies
have brought significant transformations to the tourism industry, significantly changing tourism business,
products and destinations. The increase of digital platforms stimulated the variety and volume of tourism products,
services and experiences. Nowadays, digital technologies are used as marketing tools by tourism companies, in
order to boost efficiency and increase communication and awareness among visitors. The expansion of the Internet
has supported the productivity of tourism-related applications and generated an opportunity for businesses to
expand and attract more customers. Digitalization has changed the way tourist services are provided because
customer expectations converge towards more digital solutions and tools. The present paper aims to investigate
the online communication channels used by tourism organizations to promote businesses, products and services.
The research was conducted in Timiș County, Romania, as a pilot study. The findings of the present paper provide
valuable information regarding the limitation of digital marketing tools used by tourism companies and how to
capitalize them as a strategic tool.
ОБЕЗБЕЂИВАЊЕ ИЗВОРНОГ КОДА КОЈИ ОБРАЂУЈЕ ПЛАТФОРМА ЗА АНАЛИЗУ КВАЛИТЕТА КОДА
Authors: Миловановић Милан
Published: February 2022

У раду је приказан модел претњи за платформу за анализу изворног кода. Такође је представљен дизајн за безбедно унапређење платформе који укључује обфускацију, употребу дигиталних сертификата и виртуелне приватне мреже.
PREPOZNAVANJE IMENOVANIH ENTITETA U SPRSKOM JEZIKU POMOĆU TRANSFORMER ARHITEKTURE
Authors: Cvejić Andrija
Published: February 2022

Za treniranje neuronskih mreži za obradu prirodnog jezika već postoje ustaljeni šabloni i principi isprobani nad engleskim jezikom. Prirodni sled dogaђаја је istraživanjе i razvijanje oblasti za druge jezike. U ovom radu predstavljena je arhitektura modela za prepoznacanju imenovanih entitet u srpskom jeziku. Kao ulaz model prima prirodno pisan jezik. Istrenirani model kao izlaz daje verovatnoće pripadnosti reči imenovanoj kategoriji. Predloženi su koraci za poboljšanje i dalji razvoj oblasti.
A case report of sodium glucose co-transporter 2 inhibitor associated euglycemic diabetic ketoacidosis: a diagnostic challenge
Authors: Richardson Andrew , Vincent Claire
Published: February 2022

Background:

Type 2 diabetes (T2DM) is becoming more prevalent worldwide and sodium-glucose co-transporter-2 (SGLT2) inhibitors are being increasingly used in its management. However, they have been associated with the serious complication of euglycemic diabetic ketoacidosis (EDKA).

Case Presentation:

A 51-year-old female on canagliflozin for T2DM presented with a 2-week history of vomiting and abdominal pain. With a blood glucose of 9.0 mmol/l, a diagnosis of diabetic ketoacidosis was at first overlooked and the patient was initially managed for pyelonephritis. However, a diagnosis of EDKA was subsequently reached on day 3 after a blood gas revealed a high anion gap metabolic acidosis with ketones of 3.9 mmol/l.

Conclusion:

This case demonstrates the diagnostic challenge posed by the atypical presentation of SGLT2 inhibitor associated EDKA. Furthermore, it underlines the need for patient education concerning stopping these medications during illness and highlights how their association with urinary tract infections may further increase the risk of EDKA.
„Nie można pisać o wszystkim”. Z Andrzejem Stoffem rozmawia Anna Skubaczewska-Pniewska
Authors: Skubaczewska-Pniewska Anna
Published: February 2022

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Application of J-integral to failure viscosity assessment of polymeric composites
Authors:   Krylov State Research Centre, St. Petersburg, Russia, Banchuk A.S. , Yeranosyan K.S. ,   Krylov State Research Centre, St. Petersburg, Russia
Published: February 2022

This paper discusses a relevant topic of improving the approaches to fracture toughness determination of layered composites. Current ASTM regulations imply the calculation of critical value for fracturing viscosity as per the test data following the classic approach of linear-elastic fracture mechanics (LEFM). For some materials, however, LEFM-based estimates are not realistic. As an alternative to LEFM in calculation of critical failure viscosity value, this paper suggests a method of J-integral. The data needed to apply this method were obtained through numerical experiments in ANSYS finite-element software package. The results of numerical experiments were used to construct load-displacement curves and compare them with the test data. The difference between critical viscosity fracturing values yielded as per LEFM and J-integral method might be as high as 33 %. This study revealed that J-integral method offers more accurate fracture toughness estimates for layered composites be- cause maximum design load results based on critical fracturing viscosity value obtained using J-integral deviated from average loads recorded during physical tests by not more than 2% whereas LEMF-based in certain cases had this deviation as high as 15 %. Still, J-integral method applied in this study required the inputs from numerical analysis, so it needs additional experimental verification.
Polymeric-comcomposite piezofilms for active elements of sound-transparent conformal sonar arrays
Authors:   JSC Niigrafit, Moscow, Russia, Mikheev D.A. , Danilov Ye.A. ,   JSC Niigrafit, Moscow, Russia, Savitsky O.A. ,   JSC Andreyev Acoustics Institute, Moscow, Russia, Paramonova N.D. ,   JSC Niigrafit, Moscow, Russia, Golovchenko M.I. ,   JSC Niigrafit, Moscow, Russia, Samoilov V.M. ,   JSC Niigrafit, Moscow, Russia, Gareev A.R. ,   JSC Niigrafit, Moscow, Russia
Published: February 2022

This paper describes manufacturing technology and main dielectric and electrophysical properties of a new polymeric composite piezomaterial, highlighting its advantages over conventional piezoceramics. The study also suggests a manufacturing technology for active elements of a long conformal emitter/receiver array. Polymeric composite piezomaterial discussed in this paper was based on polyvinyldenfluoride (PVDF) and piezoceramics of lead zirconate-titanate system (CTS). Its main properties given in this study are: frequency curves for dielectric (tangent of dielectric loss angle, relative dielectric constant, quality factor) ane electromechanic (tension piezomodulus, acoustic impedance) properties. Performance parameters of the active element given in this paper are: directional patterns at different frequencies, effective piezomodulus and frequency-piezosensitivity curve. The paper shows that this composite material is equal to conventional PVDF films in terms of its dielectric properties and compliance but offers better electromechanical parameters. Piezoconverter designs suggested in this study feature uniform frequencysensitivity diagram for both transmission and reception over the whole frequency band under investigation, as well as insensitivity to flow noise. New composite materials newly introduced to hydroacoustics also make these designs of receiving array elements insensitive to parasytic vibration of hull structures. The paper shows the advantages of the developed composite piezofilm as compared to conventional hydroacoustic piezoceramics. Piezofilms, including composite ones, are as sensitive as ceramics but more compact, less heavy and feature much greater specific area of reception. A promising approach would be to further increase piezomoduli of film-based materials keeping their acoustic impedance low, which would result in greater operational efficiency of receiving sonar arrays.
Machine learning technologies for automated draft measurements
Authors:   Kerch State Marine Technological University, Kerch, Russia, Ivanovsky A.N. , Zinchenko Ye.G. ,   Kerch State Marine Technological University, Kerch, Russia, Cherny S.G. ,   Admiral Makarov State University of Maritime and Inland Shipping, St. Petersburg, Russia
Published: February 2022

This paper discusses the process of ship draft measurement known as draft survey. The purpose of the study was to improve the accuracy of draft survey results and the efficiency of this procedure itself. The study relies on video footages of draft marks, as well as clinometer readings, following the methods of digital image processing, machine learning, digital signal processing, linear filtering and applied programming. The tools developed as a result of this work are based on machine-learning algorithms and can perform draft surveys even in bad weather. Accuracy limits depend on camera resolution, lighting and weather conditions. Combined with linear filtering algorithms and ship inclinometers, this technology might offer draft survey tolerances as narrow as several millimeters, thus being well above its existing counterparts. Automated draft survey method suggested in this paper will make cargo weight measurements of bulkers more accurate, thus saving time and money, as well as making survey results independent on human error. Relying on machine-learning and computer-vision technologies, this method is universal and will work with any type of ships. Theoretical value of this study is that it gives a comprehensive review of what ship draft is and how it is measured.
Automated control system for electric drives with integration of programmable relays and active filters
Authors:   Kerch State Marine Technological University, Kerch, Russia, Vyngra A.V. , Sobolev A.S. ,   Kerch State Marine Technological University, Kerch, Russia, Chernyi S.G. ,   Admiral Makarov State University of Maritime and Inland Shipping, St. Petersburg, Russia
Published: February 2022

This paper discusses relevant challenges in upgrade of control systems and reviews possible applications of new programmable relays OVEN PR10 for non-stop Ethernet data transmission. It also discusses integration of active power filters in feeding circuits of electric drives with upgraded automatic control systems. The study analyses the applications of active filters and suggests a testing system that consists of electric compressor drives and automated multi-channel control system with integrated active filters. The tests performed under this study have shown that automatic systems work more efficiently if they are fed by high-quality loading current from their electric drives and are governed by OVEN PLC110 programmable logic controllers. This paper also describes a case study: laboratory experiment on integrating active power filter for interharmonic current components with multi-channel drive control system based on cutting-edge programmable relay OVEN PR103. The results of this study could be useful for the upgrade of Russian fishing fleet, as well as for design and development of innovative ships.
Standard values as key element in man-hour management of ship construction and repair
Authors:   JSC Shipbuilding and Ship Repair Technology Centre (SSTC), St. Petersburg, Russia, Yudenko A.N.
Published: February 2022

Man-hour norms as an economic parameter have not only technical significance but a social dimension, too, because they sometimes determine the level of salaries, industrial revenues, production volumes and welfare of whole regions. The studies on man-hour norms, update of obsolete man-hour standards and appraisal of those newly introduced to industrial practice enable efficient application of shipbuilding normatives in terms of manufacturing preparation. Rumb Industrial Research Centre of SSTC has started its work towards updating the regulations on labour and man-hours, as well as implementing these regulations in shipbuilding practice. For capital ship construction, man-hour regulations are already developed and approved. Current work is focused on man-hour norms for new production processes. For the first time ever, SSTC has come up with man-hour norms for ship repair that might also be used for repair cost projections. It has also started updating current man-hour regulations for ship repair. A joint Working Group made up by JSC United Shipbuilding Corporation and JSC SSTC experts is currently working to restore an integrated industrial system of manhour management. As a result, the industry has paved the way to a more orderly planning and man-hour accounting at shipbuilding and ship repair enterprises. The norms with standard man-hour values for ship construction and repair as a key element of an industrial man-hour management system might also become a tool of economically sound decision making, thus enhancing production and labour efficiency in the shipbuilding industry.
Pengaruh Persepsi terhadap Minat Memilih Baitul Maal Wat Tamwil (BMT) Insani Padangsidimpuan
Authors: Shubuhanda Fadhlan , Siregar Fatahuddin Aziz , Batubara Damri
Published: February 2022

AbstractEnvironmental Community V Sidangkal Subdistrict, South Padangsidimpuan Subdistrict is classified as a pluralistic society in terms of religion. This research was conducted to determine whether there is an effect of perception on the interest in choosing Baitul Maal wat Tamwil (BMT) Insani Padangsidimpuan, and to analyze the selection criteria that were considered in selecting BMT Insani Padangsidimpuan and to analyze people's attitudes. The sampling technique used in this study was saturated sampling. Saturated Sampling is a sampling technique when all members of the population are used as samples. Another term saturated sample is census, where all members of the population are sampled. The results showed that there was an effect of perception on the interest in choosing BMT Insani Padangsidimpuan, or from the results of the coefficient of determination showed that the value of R = 0.564 and R x R = R2 was 0.318 which stated that the X (Perception) variable contributed to the Y (Interest) variable by 31, 8%, meaning that the variable X (Perception) can affect the variable Y (Interests). And 68.2% of people's perceptions are influenced by other factors. Keywords: Perception, Interests, and Baitul Maal wat Tamwil (BMT).
Pengelolaan Zakat Di Indonesia
Authors: Nasution Adanan Murrah
Published: February 2022

Zakat is the primary means of communication between man and another man in bermasyarat sake compose a harmonious and humane life . The role of Zakat , both property and tithes would be more visible subtle and implemented together with other instrumental value that is usury. Obligation of alms giving firm and absolute top of every Muslim, premises object property that is property and income that have fulfilled the obligation of zakat and charity penunian -value embodied wisdom and universal values that benefit the community life and poverty pengentas.Keywords : Zakah, management, poverty
Keniscayaan Memahami Fikih Muamalat bagi Wirausaha
Authors: Nawawi Zuhrinal M
Published: February 2022

Islam as a universal religion, teaches all aspects of the lives of its adherents such as matters of worship, morals, including procedures in everyday life which we often call muamalat. For Muslim entrepreneurs, it is a necessity to know and understand religious law in business, especially fiqh muamalah. So that they understand about business and entrepreneurship; and understand the concept of fiqh muamalah, its scope in contemporary business, and the rules of fiqh that are appropriate for contemporary business. Islam emphasizes the importance of developing and upholding an entrepreneurial culture in the life of every Muslim. A Muslim entrepreneur must have basic qualities that encourage him to be a creative and reliable person in running his business or carrying out activities at the company where he works.
The Effect Of Muḍārabah Financing And Musyārakah Financing On Operational Revenue Of Sharia People Financing Bank (BPRS In Indonesia 2014-2018 Period)
Authors: Mariati Mariati , Hasibuan Abdul Nasser , Saleh Idris , Fauzan Fauzan
Published: February 2022

Based on the financial report data of Muḍārabah financing, Musyārakah, and operating income in the Islamic People's Financing Bank in 2014 to 2018. An increase in financing but not followed by an increase in operating income, and also vice versa operating income has increased but the funding has decreased. So that the formulation of the problem in this research is whether there is an influence of Murārabah financing and Musyārakah financing on operational income at the Islamic People's Financing Bank. With the aim of this study is to determine the effect of Muḍārabah financing and Musyārakah financing partially and simultaneously on operational income at the Islamic People's Financing Bank. The discussion of this study relates to Muḍārabah financing and Musyārakah financing and operational income of the Islamic People's Financing Bank (BPRS) and is complemented by other sciences related to the topic under study. This research is a quantitative study, using secondary data and time series forms from 2014 to 2018 as many as 60 samples. Data analysis used was descriptive statistical analysis test, normality test, classic assumption test (multicollinearity test, heteroscedasticity test, autokoleration test), R2 test, hypothesis test (t test, F test), and multiple linear regression tests with processing used through SPSS 23. Partial research results (t-test) There is no effect of Muḍārabah financing on operating income at the Islamic People's Financing Bank in Indonesia for the 2014-1018 period. There is an influence of Musharaka financing on the operational income of Islamic People's Financing Banks in Indonesia for the 2014-2018 period. While simultaneous Fcount has a value greater than Ftable, this explains that Muḍārabah financing and Musyārakah financing have a significant simultaneous effect on operational income.
Rahn Tasjily Product Development Strategy at PT. Pegadaian (Persero) Sharia Service Unit Mandailing Natal
Authors: Suaibah Suaibah , Rasyid Arbanur , Murrah Adanan , Annam Rahmat
Published: February 2022

The background of the problem in this study is that the product development strategy rahn tasjily has been implemented well with evidence that there are some customers who have become customers of tasjily rain products, but the process in increasing the number of customers has still not increased. The formulation of this research problem is how the product development strategy rahn tasjily at PT. Pegadaian (Persero) Sharia Service Unit Mandailing Natal, any obstacles in developing the number of customers of rahn tasjily products at PT. Pegadaian (Persero) Sharia Service Unit Mandailing Natal. This research uses qualitative approaches with data collection techniques in the form of interview guidelines, observation and documentation, data reduction analysis techniques, data presentation, and conclusion withdrawal. The subject of this study is the leadership and employees of PT. Pegadaian (Persero) Unit of Sharia Services Mandailing Natal and customers as many as 4 people, the data source used is primary data and secondary data. The results showed that rahn tasjily product development strategy in PT. Pegadaian (Persero) Mandailing Natal Sharia Service Unit is a marketing mix that is one of them with promotion through social media, direct promotion, jumping into the field, and socialization. The strategy has not increased because the public does not know the product rahn tasjily well. Constraints of PT. Pegadaian (Persero) Sharia Service Unit Mandaiiling Natal in marketing products to improve there are some of the promotions that are done less, lack of socialization, limited operational costs. And the assumption of the community that pawnshops only as a place to pawn money.
Kontribusi Wakaf Lahan Produktif Untuk Meningkatkan Sosial-Ekonomi Masyarakat Islam Di Medan
Authors: Mukhlis Mukhlis
Published: February 2022

Abstrac Research on the use of productive waqf land is directed at the first three components to people who need funds for their daily needs, the third free education, free health services. Waqf is part of an economic system that can help promote goodness and human values from back. Utilization of the results of productive waqf land management has a positive impact on the lives of Muslim communities in Medan City, North Sumatra.  Abstrak Penelitian tentang pemanfaatan tanah wakaf produktif ini diarahkan pada tiga komponen pertama kepada masyarakat yang membutuhkan dana untuk kebutuhan hidup sehari-hari, pemberian pendidikan gratis ketiga, layanan kesehatan gratis.Wakaf merupakan bagian dari sistem ekonomi yang dapat membantu mengangkat kebaikan dan nilai-nilai kemanusiaan dari belakang. Pemanfaatan hasil pengelolaan lahan wakaf produktif berdampak positif bagi kehidupan masyarakat muslim di Kota Medan, Sumatera Utara.
The Role Of Sharia Banking To Recover SMEs During Covid-19 Pandemic
Authors: Trimulato Trimulato
Published: February 2022

Abstrak Tujuan penelitian untuk mengetahui perkembangan pembiayaan perbankan syariah bagi UMKM ditengah Covid-19 dan peran perbankan syariah dalam memulihkan UMKM selama pandemic.  Jenis penelitian studi pustaka, menggunakan data sekunder, kemudian diolah oleh peneliti. Teknik analisis data yang digunakan dalam penelitian ini adalah deskriptif kualitatif, mendeskripsikan perkembangan pembiayaan perbankan syariah serta peran perbankan syariah bagi pemulihan UMKM di tengah wabah Covid-19. Hasil penelitian menunjukkan perkembangan pembiayaan di perbankan syariah yang disalurkan untuk UMKM selama pandemi Covid-19 mengalami penurunan. Penurunan pembiayaan terbesar terjadi pada pembiayaan BPRS untuk UMKM yang mengalami penurunan sebesar 14,88 persen, pembiayaan BUS untuk UMKM mengalami penurunan sebesar 14,17 persen, dan pembiayaan UUS mengalami penurunan sebesar 13,47 persen. Peran perbankan syariah bagi pemulihan UMKM di tengah pandemi covid-19 adalah meningkatkan porsi pembiayaan UMKM, mendampingi mereka para pelaku sebagai mitra, perbankan syariah dapat memberikan keringanan pembayaran, meningkatkan jumlah pembiayaan skema bagi hasil yang lebih tepat untuk pembiayaan UMKM.   Abstract The purpose study to determine development sharia banking financing for SMEs during covid-19 pandemic. Then to find role sharia banking recover SMEs during covid-19 pandemic. Type research used library research, data source used secondary data, which has published institutions processed researchers and from various pre-existing sources. Data analysis technique used research descriptive qualitative, describing development financing sharia banking and role of sharia banking for recovery SMEs during covid-19 pandemic. Results showed development of financing in sharia banking was distributed SMEs during covid-19 pandemic experienced decrease amount of financing. Largest decline in financing occurred in BPRS financing for SMEs, which experienced decline of 14.88 percent, BUS financing investment SMEs decrease 14.17 percent, and UUS financing decrease 13.47 percent. Role sharia banking recovery SMEs during covid-19 pandemic is increasing portion financing SMEs, assisting  them players as partners, sharia banking can provide payment, increasing number financing profit-sharing schemes more appropriate for financing SMEs.
The Role of University Libraries in Meeting Information Needs for Students and Lecturers: A Portrait of Libraries in North Sumatra
Authors: Dalimunte Muhammad , Nasution Kasron , Rambe Toguan
Published: February 2022

This research was conducted in North Sumatra, by selecting three research locations altogether under the auspices of PTKIN (State Islamic Religious High School) namely the Library of North Sumatra UIN Medan, IAIN Padangsidimpuan and STAIN Mandailing Natal. The selection of this location was based on the representation of religious college libraries in North Sumatra. The three universities have different characteristics. This study aims to see a portrait of a university library in North Sumatra. The existence of a library is very vital in improving the academic quality of a university. The research model used is qualitative, by extracting in-depth data from the point of view of informants, through FGD (Focus Group Discussion), Observation and documentation studies. The results show that there are three roles of library managers in realizing an effective information service system in university libraries. North Sumatra, among others; providing guidance services to users (users), providing circulation services, "providing reference services, also encountered obstacles, such as limited resources, while the efforts of library managers to realize an effective information service system, namely training for managers and improving service management
PENGARUH DOW JONES ISLAMIC MARKET INDEX DAN DAMPAK MAKROEKONOMI TERHADAP INDEKS SAHAM SYARIAH INDONESIA
Authors: Nevada Shanfariza , Kusumaningtias Rohmawati
Published: February 2022

This research aims to to identify the effect of the Dow Jones Islamic Market Index and the macroeconomic impact (global commodity prices of palm oil, coal, gold and nickel) on the Indonesian Sharia Stock Index. This study uses secondary data in the form of the movement of the Dow Jones Islamic Asia Pacific Index (DJIAP), the Indonesian Sharia Stock Index and global commodity prices (palm oil, coal, gold and nickel) for the period 2014-2019 with a total of 61 samples. Through SPSS statistical data analysis, it shows that partially the price of palm oil and gold commodities has a significant effect on the Indonesian Syariah Stock Index. And partially DJIAP, coal commodity prices and nickel commodity prices do not affect the Indonesian Syariah Stock Index. Whereas the Dow Jones Islamic Market Index simultaneously and the macroeconomic impact affect the Indonesian Sharia Stock Index.
DETERMINAN PREFERENSI MASYARAKAT MUSLIM DALAM MEMILIH HOTEL SYARIAH
Authors: Rijal Muhammad Khairur , Yafiz Muhammad , J Yenni Samri
Published: February 2022

This research tries to analyze the factors that determine the preferences of Medan's Muslim community towards the selection of sharia hotels. The method used in this research is quantitative by taking a sample of 100 people from the Muslim City community who stay at the Sharia Hotel chosen by the researcher. The method of data analysis uses multiple linear regression with the help of SPSS Version 21.0. From the results of research conducted showed that the partial variables are also simultaneous price, halal, facilities, interests and motivation towards the preferences of the Medan City Muslim community in the selection of sharia hotels. From these variables, the overnight stay of finance from the sharia hotel sector in Medan increased.
ISLAMIC WEALTH MANAGEMENT DURING THE COVID-19 PANDEMIC
Authors: Cahyani Utari Evy , Siregar Rizal Ma'ruf Amidy , Napitupulu Rodame Monitorir
Published: February 2022

The coronavirus disease (COVID-19) pandemic has severe health effects and serious implications for economic. This research is a conceptual article that describes concepts and principles of Islamic wealth management (IWM), Islamic financial planning practice during Covid-19 pandemic, and Islamic social finance for reducing the pandemic effect. There are five stages in IWM that is wealth accumulation, wealth consumption, wealth purification, wealth distribution, and wealth protection. Wealth distribution such as alms, grant, and waqf are important in reducing social and economic impacts due to a pandemic. The existence of Islamic social financial institutions becomes very important to manage that fund. In other hand, practicing Islamic financial planning in household level can mitigate potential poverty in the crisis period. The financial planning manage the provision given by Allah as well which is beneficial for the life of the world and for the afterlife.