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The aim of the present paper is to study the subclass ȿɤ(횤, ℴ, 푏, 푣, 휔, 푑, 푡, ℷ, 휉) of univalent functions with negative coefficients. More prcilesly, this subclass is defined by Srivastava-Attiya operator in the open unit disk 핌 = {푧: 푧 ∈ ℂ, |푧| < 1}. Also, it covers and demonstrates some geometrical properties such as the coefficient inequality, distortion theorem and growth theorem, radii of starlikeness, convexity, close-to-convexity, closure, and neighborhood property for the class ȿɤ(횤, ℴ, 푏, 푣, 휔, 푑, 푡, ℷ, 휉). Finally, many important definitions and characterizations have been obtained related to diverse types of the considered geometrical properties. [ABSTRACT FROM AUTHOR]

Wireless sensor networks (WSN) are indispensable components of healthcare, environmental monitoring, and industrial automation which rely on AI for security countermeasures. Security requirements for WSNs are different from other traditional networks as the traffic is usually bi-directional, and the networks are unstable making the weakness hard to determine. The study aims at identifying and evaluating probable security risks to computer networks which could be, DDoS attacks, malware infections, data intrusions, and unauthorized access occurrences among other threats. The principal target is raised the accuracy of threat detection and discretion, there in, WSNs are made fortify. Anomaly detection is one important arsenal on WSNs since it can aid in the identification of any disturbing behavior that might be due to the system's security problems or continuing attacks. Implementing Random Forest-based widely applied ensemble algorithm – leads to powerful data analysis techniques for detecting potential threats and attacks in WSNs. The efficiency of the offered AI-based approach is demonstrated as the real-life results showed significant enhancement on the cyber threat breakthrough and categorization capabilities. The research will deploy the AI technology to enhance the effectiveness of a WSN by providing better threat identification, anomaly detection, and security measures in the network. It is apparent that it plays a direct role in building the cybersecurity capabilities of WSNs. [ABSTRACT FROM AUTHOR]

The Malaysian wood industry is experiencing a shortage of raw materials due to lack of rubberwood in the country. Fast-growing species must be used to add more sources to the mills. This study evaluated the suitability of Kelempayan, a fast-growing species to produce particleboard. This research work aims to determine physical and mechanical properties of particleboard made from mixture of fast-growing species namely Kelempayan and rubberwood bonded with urea formaldehyde resin. In this study, the particleboard was produced using 50:50 ratio blend for each species. The variables involved were board densities (600, 700 and 800 kg/m3) and resin contents (8, 10 and 12%). The particleboard tested for modulus of rupture, modulus of elasticity, tensile strength and thickness swelling according to Japanese Industrial Standard (JIS A 5908:2003) for particleboard. The results indicate that an improving in the mechanical and physical properties of particleboards with increasing the added resin content in the mixture and the density of particleboard. After evaluation of the test results, it can be concluded that Kelempayan and rubberwood can be mixed and used as an alternative species to manufacture particleboard to ensure sustainability of raw material. [ABSTRACT FROM AUTHOR]

In this work, we utilized a novel operator obtained through the Hadamard or convolution product of the Srivastava-Atiya and Amora-Darus operators. Our study yielded new results. In the first section, we presented third-degree differential subordination results, which encompass the operator DHy,μ (a, β)푓(w). This operator's dependence was established while exploring the class of admissible functions that involve subordination derivatives and the Srivastava operator. These functions are analyzed in the complex plane. In the second part, we obtained the third-degree differential operator DHy,μ (a, β)푓(w), and we proved several theorems to determine the best subordinate function. Our research yielded numerous results in this context. In the final part of our study, we discussed theories of the sandwich type and the determination of the best dominant and best subordinate functions while maintaining their analytic properties. When certain restrictions are imposed on functions belonging to specific subclasses, we derived new results within the unit disk. [ABSTRACT FROM AUTHOR]

The electric vehicle showcases a promising development in the future. Recently, the most reliable power storage for such a system is a Li-ion battery. The performance of this battery, however, relies on the thermal management system implemented on the vehicle. Albeit having a sufficient performance for the current state of an electric vehicle, enhancement is necessary to make sure that the future requirement is within the remit of the cooling system. One of the simple but powerful enhancements is by employing a mini-channel cold plate. In this study, the performance of a serpentine mini-channel cold plate in various Reynolds numbers (Re) was investigated experimentally. The results illustrate a better mean of cooling of high Re flow, indicated by the lower surface temperature and higher heat transfer coefficient up to 2.1 W/m2·K. Additionally, the performance was then compared to the pressure drop to represent the efficiency of the pumping power requirement of such a system. The highest h/ΔP is observed at Re = 2130.33 which correspond to the mass flow rate of 0.5 LPM. It was found that although having a higher heat transfer coefficient, the efficiency is much lower due to pressure drop rise as the mass flow rate increases. [ABSTRACT FROM AUTHOR]

Bangladesh Institute of Labour reported that construction is the most dangerous industry in terms of health and safety at work. Safety issues have a large impact on the budget, schedule, and project's quality. The ILO estimated that the construction sector in industrialized countries employs between 6% to 10% of the workforce but accounts for between 25% to 40% of work-related deaths. Since the safe work procedures are not integrated, safety concerns are almost entirely ignored in construction projects both in public and private sector. Only projects funded by international financial authorities, such as the World Bank, ADB, JICA, and others, have effective requirements or guidelines regarding safety. In this study a particular task of Jamuna Railway Bridge Construction is considered as the case study to assess the risk and effect of prevention measures on it. In the project, due to an accident during Pier construction, the authority carried out underwater MS plate installation and welding work in the damaged steel cofferdam. Prior to repair activities, method of statement was prepared with risk assessment and its control measures for comparatively safe work. The Hazards and severity of each component were identified and Risk assessments were performed. Based on the well-established methodology, the probability and severity levels are determined to calculate the Risk Factor. It is observed that for the reported activities the probability scores are varied from 2 to 4, whereas the severity varies from 3 to 5 (5 for most of the activities). Thus, the calculated risk score was found to be varied from 9 to 20, which is under the category of high -risk level. Severity of hazard can not be changed but probability can be minimized imposing the prevention measures. Therefore, before implementing the work, precaution measures are imposed, and its reflection in minimizing the Risk Factor are calculated. It is found that the probability scores are reduced to 1 for most of the cases with a highest value of 2 in some. Therefore, the risk scores were reduced and found to be varied from 2 to 6 (only one activity still has a score of 10), which is under the category of low risk level. Workers may not be aware of potential hazards or may not have the skills necessary to effectively mitigate risks if they are not properly trained or if training is not updated on a regular basis. Therefore, Construction projects must be designed with proper risk management plan quantifying the probable hazard and severity for each of the activities and implement accordingly. [ABSTRACT FROM AUTHOR]

In this study, we delve into the moisture flux availability over the sea surface and its potential for contributing to the production capacity of atmospheric water generation systems. Understanding that a higher moisture flux availability in the atmosphere directly translates to a greater reservoir of water vapor accessible for extraction and condensation, we embark on an investigation centered on seas and gulfs across the Middle East, parts of North Africa, and western Asia – regions currently grappling with elevated freshwater stress. Our methodology uses ERA-5 data from 2009 to 2019, encompassing key meteorological variables at the near-surface level of the atmosphere. Employing the Monin-Obukhov similarity theory, we extract the required variables for different atmospheric stability conditions, enabling us to compute the horizontal moisture flux within the surface sublayer above the selected seas and gulfs. Our findings, derived from a comprehensive analysis of ten years of daily data, reveal distinct seasonal patterns. During December, January, and February, the selected seas and gulfs experience comparatively lower moisture flux levels, often falling below the threshold of 0.07 kg/m²·s. In stark contrast, the summer months of June, July, and August witness the highest moisture flux, with particularly robust concentrations detected in the deep Arabian and Red Sea. We delineate a 50-kilometer-wide zone from the shoreline of each sea and gulf to calculate the zonal mean moisture flux. This detailed analysis unearths regions with notably heightened moisture flux availability. Notably, the Arabian Sea, Bay of Bengal, Red Sea, and Gulf of Aden emerge as strong contenders, boasting significantly higher moisture flux than other study locations. Our study outcomes bear significant implications for regional water resource management. By pinpointing areas with abundant atmospheric moisture above the sea, we lay the foundation for potential solutions to alleviate freshwater scarcity through atmospheric moisture harvesting. [ABSTRACT FROM AUTHOR]

The Pussur-Sibsa system, a multichannel system in the southwest GBD, is a significant concern for the Mongla Port (MP) and Bangladesh's economy. The river's depths were adequate for 8.5m draft ships, but after 1980, they drastically reduced, requiring regular maintenance dredging. The Mongla Port Authority (MPA) has implemented five capital dredging projects between 1990 and 2020, but high siltation rates still pose a threat to the port's development. The government has established another sea port, Payra Port, on Rabnabad channel, which has sufficient depth to handle over 10m draft ships. However, the port's outer channel is too shallow for ships, and a designed canal needs to be dredged and maintained. This study assesses the suitability of the Sibsa river for the development of a new port in terms of hydrodynamics and morphology. The Pussur-Sibsa river systems are downstream rivers of the GBM delta, with the Gorai River being a major tributary of Padma. The Sibsa River exhibits significantly more tidal activity than the Pussur River. During the dry season, Sibsa experiences a notable increase in tidal volume ranging from 24% to 35% on average. Conversely, during the monsoon season, the volume of Sibsa exceeds that of Pussur by more than twice, mostly due to a greater influx of freshwater through Sibsa. Tidal volume in the Pussur river has been reduced near Mongla over the last few decades, while in the Sibsa river, tidal volume has increased, resulting in a deeper bed level. The net flow of water that reaches the confluence at Jalma is distributed into two main channels, with approximately 15% sent towards the West via the Lower Solmari River and 85% continuing its course along the Kazibacha River. The Sibsa river's bed level varies between 20 meters and 35 meters below the chart datum, while the Pussur river's bed level fluctuates between 5 meters and 20 meters. A comparative analysis of the bed profiles along the thalweg line of the two rivers revealed shallower bed levels in the Pussur river. The Mongla Port (MP) on the eastern bank of the Pussur River has been dredging since 1979 to maintain a navigable channel, but financial implications and consistent implementation of dredging activities pose significant obstacles to its progress. The Sibsa river has sufficient depth for the movement of more than 10 meters draft ships, with only the entrance channel of the Pussur-Sibsa river needing dredging. The maintenance dredging requirement of the inner channel is predicted to be negligible compared to the 4 million cubic meters of the Pussur River. The establishment of Payra Port (PP) on the Rabnabad channel by the Bangladeshi Government has also been undertaken. The port area near the berth has adequate depth for accommodating vessels with a draft exceeding 10 meters. However, the outer channel needs excavation and regular maintenance to ensure safe passage for vessels. Based on hydrodynamic and morphological advantages, Sibsa river could be considered a suitable location for further development of Mongla Port, with lower operational costs and less required dredging costs compared to other options. [ABSTRACT FROM AUTHOR]

In nature, soils with the same characteristics are hardly seen. Most of the time, layered soil profiles are observed. Sometimes, it is necessary to construct tunnels within this layered soil. So, it is essential to understand the tunnel behaviour in layered soil to ensure its safety. This study investigates the response of tunnel deformation behaviour under a strip surcharge load applied across the tunnel and along the tunnel at the top of the model in layered soils. Within this study, the numerical model of circular shaped tunnel is developed using FLAC3D, where three different soil layers with different physical characteristics have been considered. The Mohr- Coulomb model is adopted as a material model. During this study, the effect of pore water pressure is also considered. A strip surcharge load is applied on the top face at various locations of the numerical model, with pore water pressure and without pore water pressure. In both cases, the thickness of these three soil layers is kept the same. Finally, the result is analysed, and the findings are reported. This study helps to understand the impact of surcharge and pore water pressure on tunnel deformation in layered soil. [ABSTRACT FROM AUTHOR]

Effective waste management in the maritime industry is crucial for mitigating environmental impacts and promoting sustainability. This study compares waste management practices between foreign ships and local vessels visiting the Mongla Port area in Khulna, Bangladesh. The assessment involved ten foreign ships and 100 local vessels, utilizing surveys and on-site visits to reveal distinct waste management strategies. Waste bins were distributed on local vessels and collected from 25 local vessels and three foreign ships. The collected waste was analyzed using a sieve and modular screen methods. Data on waste collection by ship chandlers from foreign ships were obtained through the Mongla Port Authority. Findings indicated that foreign ships demonstrated efficient waste management, with only 38 foreign ships relying on ship chandlers for waste collection, while 96.5% to 97.67% accessed waste facilities from other ports like Chittagong. Compliance with MARPOL Annex regulations was consistent among foreign ships. In contrast, local vessels from Bangladesh lacked regulatory frameworks for waste management. Practices varied, with some vessels implementing waste segregation while others lacked proper separation methods. Several local vessels engaged in plastic waste recycling, but inconsistent reporting hindered the assessment. Despite lower plastic waste generation rates on local vessels (4.13 gm/capita/day) compared to foreign ships (154 gm/capita/day), their waste disposal practices raised environmental concerns. This comparative analysis underscores the need for enhanced waste management infrastructure and practices among local vessels. Urgent interventions are essential to promote environmental preservation and sustainability in the maritime industry. The BIWTA and all the corresponding officials, port authorities, and crew members of local ships must take the necessary steps to make waste management sustainable and environmentally friendly. [ABSTRACT FROM AUTHOR]

The Meghna estuary is the largest estuary along the Bangladesh coast where major rivers of the country discharges into Bay of Bengal. Sandwip is a major island in the Meghna estuary. Cyclone, storm surge, salinity, erosion- accretion are some common occurrences in coastal region of Bangladesh. These makes the island very much vulnerable. In this study, amount of erosion-accretion, rate of shoreline change of Sandwip Island is determined during the period of 2000-2020 with an interval of 5 years. The study has been done using ArcGIS 10.5 and DSAS 5.0 (an extension of ArcGIS) with the satellite images. This study aims to study the physical conditions of the study islands, historical erosion and accretion and to estimate the rate of shoreline changes. The study reveals that the island is largely vulnerable to cyclone, storm surge, tidal flooding, erosion, salinity and wave actions. From the analysis of historical satellite images, it is found that Sandwip is accretion-dominated islands for last 20 years. It has been extended nearly 2.01% than the year 2000. The average deposition rate ranges from 18.8 m/year to 30 m/year across 51.5% peripheral length, with the maximum rate of 146.7 m/year in northern direction. On the other hand, the erosion rate ranges from 11.4 m/year to 31.4 m/year across 49.5% peripheral length, with the maximum erosion rate of 47.8 m/year in western direction. From the results, it prevails that the Sandwip Island has been moved towards north-east direction. [ABSTRACT FROM AUTHOR]

This study has been conducted in the first part of the Eastern Surma-Kushiyara Floodplain Basin located in Golapganj Upazila, Sylhet district, Bangladesh. A total of 60 water samples (30 for surface and 30 for ground) were gathered to examine the hydro-chemical properties of surface and groundwater. To define the water quality for general, drinking, and irrigation uses, several different statistical and graphical techniques were used. In addition, water quality parameters were utilized to assess the quality of the water for agricultural usage. A comparison of standard values for different parameters indicates that the condition of the water at the study site is not completely normal for drinking. According to the results, electro-neutrality balances are not properly satisfied. The most common water type in the field of study is Ca-HCO3 water (both surface and ground), but Mg-HCO3 water (33 percent of surface water samples) is also present. The obtained results also indicate that both the quality of surface and groundwater in the study site is suitable for the use of irrigation purposes. The outcome of this study is expected to be useful for the inspection of groundwater and surface water and for future regulations at the site of the study. [ABSTRACT FROM AUTHOR]

Extensive research in recent years has focused on enhancing the self-healing ability of cementitious materials using different admixtures. This study aims to explore the potential of Super Absorbent Polymer (SAP) for self-healing in mortar specimens. The experimental program involved casting mortar specimens with varying SAP concentrations (Control 0%, 0.2%, 0.4%, and 0.5% of the weight of cement) combined with 3% and 5% of micro-silica. The specimens were subjected to concentrated lateral load for crack initiation and then underwent wet-dry curing for 28 days. Thirteen cylindrical specimens were prepared, each cast in a mold measuring 6 inches in diameter and 6 inches in height for the permeability test. Several cylindrical specimens showed a tendency for crack healing compared to the control specimen, as observed in the permeability test. Additionally, 13 cubic specimens (2×2×2 inches) were prepared for the compressive strength test, each with a different combination of SAP and micro-silica. After 28 days of curing, an increase in compressive strength was observed with an increase in SAP content, as SAP influences the material's mechanical performance by creating macro-pores. The control specimen exhibited compressive strengths of 4.6 MPa, 6.5 MPa, and 5.7 MPa, assessed on days 3, 7, and 14, respectively, while the 0.5% SAP specimen showed significantly higher strengths of 10.4 MPa, 10.9 MPa, and 11.9 MPa on consecutive days. In the dry shrinkage test, the control specimen displayed a higher shrinkage ratio of 59,200×10−6. In contrast, the 0.5% SAP specimen demonstrated much lower shrinkage at the end of two weeks, with a shrinkage ratio of 38,000×10−6. The self-healing performance was evaluated, as the incorporation of SAP into mortar specimens showed a decrease in crack opening and a lower drying shrinkage ratio than the control specimens. The results of this study suggest that SAP can be a promising additive for improving the self-healing ability of mortar. [ABSTRACT FROM AUTHOR]

Polluted air, whether outside or inside a building, can potentially aggravate asthma and allergy symptoms in the human body. In addition to dust mites, pet allergens, and mold, chemical pollutants such as nitrogen dioxide, sulfur dioxide, ozone, particulates, and volatile organic compounds are known to trigger asthma attacks. Because students spend an average of 10–14 hours inside the classroom each week, they are subjected to a significant amount of polluted indoor air, which poses a significant threat to their overall health. There has not been a lot of research done on the connection between the indoor air quality (IAQ) of educational institutions and the allergens that students are exposed to, as well as the health of their respiratory systems. This research project focuses on the classrooms at the Civil Engineering Department at Khulna University of Engineering and Technology and the quality of the indoor air was investigated to discover whether or not certain air contaminants are responsible for triggering asthma attacks. To query about the pupils' respiratory health, a questionnaire was handed out to each of them. Portable air analyzers were used to determine the level of cleanliness of the air inside. The concentration of carbon monoxide (CO), carbon dioxide (CO2), sulfur dioxide (SO2), nitrogen dioxide (NO2), and ozone (O3) were all measured by this apparatus. Using the concentration of the air pollutants present in the classroom, the Air Quality Index (AQI) was calculated with the National Ambient Air Quality Standard. A total of around 26% of the students who took part in the survey were diagnosed with asthma, and 35% of the students had a family history of asthma. The Air Quality Index (AQI) values for sulfur dioxide (SO2), particulate matter (PM2.5), and particulate matter (PM10) were 63, 96, and 90, respectively, suggesting minor respiratory discomfort. According to the findings of this study, there is a possibility that asthma could be triggered by exposure to air pollution that is present in the classroom. This is the conclusion drawn from the data of the study. Within the classroom located in the Civil Engineering building, an assessment was carried out to determine whether or not the classroom was qualified for WELL Certification. There is a scorecard system, and the minimum number of points necessary to become eligible for the certification in the air category is 17. Based on the findings of the investigation, the classroom received just 4 points, which indicates that the classes do not meet the requirements for certification. For enhanced indoor air quality, the study recommends WELL Building Standard classroom improvement. [ABSTRACT FROM AUTHOR]

It is very important to design an innovative product by paying attention to needs analysis, in addition to risk and sustainability factors in society. The aim of the research was to determine criteria with sub-criteria in them, determine alternatives with the goal of technology transition to the next level for commercialization and investment opportunities. The methodology developed conducted ANP (Analytical Network Process). The network model developed had 5 alternatives, namely feasibility, risk management, user acceptance, environment and Start Up, with 4 criteria, namely Regional Development, Academics, Community and DUDI containing 5 sub-criteria, namely down streaming, digitalization, green economy, Readiness Level Technology (TKT), replicability potential and sustainability. The analysis results from the network model showed there was an interconnected relationship among criteria, sub-criteria and alternatives influencing the targeted goal, namely the transition of technology to the next level in commercialization efforts and investment opportunities. In the criteria cluster, the highest priority weight was obtained, namely Business World, Industrial World, amounting to 0.53248. Furthermore, in the sub-criteria cluster, the highest priority was obtained, namely the Technology Readiness Level of 0.43219 and the highest priority of the alternative cluster was User Acceptance of 0.45729. These criteria, subcriteria and alternatives had a more dominant role in producing innovation for commercialization. Recommendations which could be made was if designing an innovation, it was necessary to look at DUDI needs with sub-criteria focused on the relevant TKT level meeting User expectations. Apart from that, it is necessary to pay attention to risk factors which may arise at each level of the TKT transition occurring while still pay attention to the effectiveness and sustainability of the innovation being commercialized. [ABSTRACT FROM AUTHOR]

Ensuring the integrity and security of server, laptop, and desktop configurations is of utmost importance in information technology (IT). Nevertheless, traditional monitoring techniques cannot frequently offer instantaneous, tamper-resistant solutions. This research presents a new method that combines blockchain technology and smart contracts to tackle these difficulties. Smart contracts are code segments that are decentralized on a blockchain. They provide a new way to manage IT settings by removing the need for centralized authorities and assuring transparency. More precisely, a proposal is made for a smart contract system to oversee and record any modifications in the ICT infrastructure of online examination systems, hence improving security and efficiency. The blockchain's immutable ledger prevents illegal alterations, while its transparency facilitates compliance and audits. The proposed method addresses common problems in server security, laying the foundation for a future based on transparency and trust in information systems. In addition, the article offers valuable insights into the fundamental components of blockchain and smart contracts, clearly explaining their adaptability and prospective uses that extend beyond financial transactions. By combining decentralized technology with IT management, enterprises may enhance cybersecurity and promote trust in digital infrastructure. [ABSTRACT FROM AUTHOR]

Improvement of physicochemical properties, morphological structure, permeate flux and selectivity is of great importance for membranes in water treatment, desalination and water treatment. The implementation of nanoparticles in membrane functionalization has shown positive results in the synthesis of effective performance membranes. In the recent work, graphene oxide (GO) at a concentration ranging from 0 - 0.4 wt. % was added into the top polyamide (PA) layer of polyethersulfone (PES) membrane by interfacial polymerization (IP) method. The outcome of GO on the morphology, physicochemical structure, and charge of the outermost surface layer of the membrane were examined using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), contact angle (CA), and surface zeta potential. Permeation flux, paracetamol rejection, and fouling performance were also evaluated. Compared to the non-modified membranes, the GO modified membranes performed better. From the results, the introduction of GO reduced the CA of the membrane, which ultimately improved the hydrophilic characteristics of the membrane. The membrane with GO 0.2 wt. % had the highest permeate flux of 22.6 L/m2h and 97.7% paracetamol rejection, with a flux recovery ratio of 91.67%. These performances were better than those of the unmodified membrane. Based on these results, functionalization of membranes with GO improves the structure and performances of the membrane and provides a potential means for developing effective, durable, and resistant membranes. [ABSTRACT FROM AUTHOR]

Here, We report the Structural and magnetic Properties of double perovskite Sr2NiMO6(M=W,Mo). The Polycrystalline samples Sr2NiMoO6(SNMO) and Sr2NiWO6(SNWO) were synthesized using Solid state reaction method. By employing X-ray powder diffraction and Rietveld analysis, we unveiled that both SNMO and SNWO samples adopt a tetragonal structure with the I4/m space group. Temperature dependence of magnetization measurement determined that both SNMO and SNWO samples undergoes the transition from paramagnetic to antiferromagnetic transition around 74.2K and 58K respectively. Upon subjecting both samples to a magnetic field, an antiferromagnetic nature is evident. Notably, SNMO exhibits an additional ferromagnetic nature at lower temperature. We also have fitted Modified Curie-Wiess law from which we got Curie temperature are −254.59K and −160.5K, and effective magnetic moment(μeff) are 4.18 µB/f.u. and 3.8 µB/f.u. for both samples SNMO and SNWO respectively. These comprehensive insights contribute to a deeper understanding of the magnetic behaviors exhibited by SNMO and SNWO. [ABSTRACT FROM AUTHOR]

Here, we investigate the structural and transport properties of both bulk and thin films of Pr0.6Sr0.4MnO3. Epitaxial films, with thicknesses of 10nm and 20nm have been grown on SrTiO3 (100) substrate using pulsed laser deposition (PLD) method. Structural investigation of Pr0.6Sr0.4MnO3 has been done using x-ray diffraction (XRD) and Rietveld analysis. Pr0.6Sr0.4MnO3 crystallizes in orthorhombic crystallographic phase with Pbnm space group. Atomic Force Microscopy (AFM) data reveals that the thin films exhibit good surface morphology. Electrical resistivity data of bulk Pr0.6Sr0.4MnO3 exhibits a metal insulator transition (MIT) at TMIT ∼ 244 K, which follows power law equation. In contrast to the bulk material, the resistivity data for the thin films Pr0.6Sr0.4MnO3/SrTiO3 (10nm and 20nm) shows an insulating behaviour across the measured temperature range, where the resistivity increases with decreasing film thickness. While the charge conduction mechanism in films is found to follow the Mott's 2D Variable-Rane-Hopping (VRH) model, this strain induced tuning of conduction remains quite intriguing. [ABSTRACT FROM AUTHOR]

This study aimed to determine the potential of coffee skin waste (Coffea robusta L) as a superior compost innovation for the growth of pepper-cutting seedlings (Piper nigrum L). This study used an experimental method with a completely randomized design using five treatments and five repeats, variations in the dose of coffee skin waste used P0 (control), P1 (90 g), P2 (135 g), P3 (180 g), and P4 (225 g). The shoot height, number of leaves, number of roots, and length of roots were measured. The results showed that coffee skin waste compost significantly affected shoot height, especially at P1 (90 g), resulting in an average growth height of 7.24 cm. In addition, the highest number of leaves was found at a concentration of P1 (90 g), with an average of two leaves. Although there was no significant effect on the number of roots, the concentration of P1 (90 g) yielded the best results, with an average of 33 root blades, and the best root length was obtained at the concentration of P1 (90 g), with an average of 44.6 cm. Therefore, coffee skin waste significantly influenced shoot height and the number of leaves on pepper-cut seedlings (Piper nigrum L.) in the P1 treatment (90 g). [ABSTRACT FROM AUTHOR]

Disposal of Lapindo mud which carries nutrients and other dissolved organic matter into the Porong estuary, can cause the death of aquatic organisms due to high contamination and disturbance of aquatic ecosystems. The presence of phytoplankton can explain the current condition of the Porong Estuary. The purpose of this study was to report the water quality and plankton composition of the Porong estuary. The method used in this study is a descriptive survey method. Determination of sampling points using the appropriate sampling method at three stations. The research variables observed included water quality parameters such as temperature, total dissolved solids (TDS), total suspended solids (TSS), total organic matter (TOM), pH, dissolved oxygen (DO), carbon dioxide (CO2), biological oxygen demand (BOD), nitrate, ammonia, orthophosphate, salinity and observations of phytoplankton in water bodies. The water quality values at stations 1, 2, and 3 respectively for TSS, pH, DO, BOD, TOM, nitrate, ammonia, orthophosphate shows a less than optimal value. Water conditions based on plankton abundance 24,678 cells/mL, 44,904 cells/mL, 18,312 cells/mL were eutrophic. The average of water quality parameters classified as less than optimal. Relatively, station 1 is the station with the best conditions between stations 2 and 3. [ABSTRACT FROM AUTHOR]

Thousand-Grain Weight 6 (TGW6), is a gene that has been associated with rice and wheat grain weights. Deletion mutation that causes early termination, expressing a truncated protein of OsTGW6 in rice (Oryza sativa) cv Kasalath, resulting in increase in grain weight. Therefore, in-silico analyses were conducted to understand the presences and functions of rice TGW6, for further breeding. Sequence similarity searches using OsTGW6 DNA sequence from Nipponbare (AB513135) as a query in the NCBI and RGAP-DB BLASTN identified 18 accessions with >65 Query cover and >70% identity. Among them are 5 rice TGW6 family members in japonica rice cv Nipponbare, 3 in chromosome 6 and 2 in chromosome 7, and other members of the family from indica and japonica rice. Phylogenetic and genetic distance analyses performed with MEGA version, using Maximum Likelihood and by computing pairwise distances with 500 boostrap values, respectively, showed that at gene and also protein levels, rice TGW6 are grouped into 5 clusters based on their subspecies and also chromosomal locations. Functional analyses of the protein using Conserve Domain Database (CDD) and Resources (NCBI) and InterPro identified conserved domains among rice TGW6 accessions, except for Kasalth, which protein is truncated due to a deletion mutation. Motif identification using MEME Suites, showed shared motifs among all rice OsTGW6 accessions, indicating similar functions. However, genetic divergent resulting in conserved domain or motifs loss, changes, or acquisitions, were also observed, which may result in different functional roles. Although further experiments need to be conducted to confirmed their functional roles, the results of these in-silico analyses can be useful as references for genetic manipulation of OsTGW6 for rice productivity improvement. [ABSTRACT FROM AUTHOR]

Missing data problems are commonly unavoidable and affect the outcome of many studies. The insufficiency of data resulted in inaccurate results and predictions in many statistical analyses. In survey studies, datasets with missing values require some imputation method to continue with reliable statistical analyses. However, the many imputation methods available are confusing. Thus, this study aims to compile the characteristics of missing values in survey data, mapping it to suggested imputation methods. In addition, the performances of five missing data imputation methods which are mean imputation, median imputation, deterministic regression imputation, stochastic regression imputation, and predictive mean matching (PMM), were compared. Two survey datasets were used in this study, and the performance of the five compared methods was evaluated using root-mean-square error (RMSE). Results indicated that for deterministic regression imputation performed the best (RMSE = 0.3674863) and the predictive mean matching imputation (RMSE = 0.3780853) performed the least for survey data "Malaysian Perception on Rising Cost of Living". However, for the second survey dataset "A Retrospective International Study on Factors Associated with Injury, Discomfort, and Pain Perception among Cyclists" resulted in the versa, the predictive mean matching imputation (RMSE = 0.4223341) performed the best, and deterministic regression imputation performed the least (RMSE = 0.3780853). In conclusion, the selection of imputation methods should be based on the type of variable and the unique features of the datasets. [ABSTRACT FROM AUTHOR]

Fusion welding is less effective when joining dissimilar materials like copper and aluminum because it results in compaction flaws like porosity and hot cracking. The solid-state welding method, or welding in a solid state, is more effective in this case because combining aluminum and copper materials with the solid state can reduce metallurgical processes that happen at high temperatures. A5005 aluminum and C10100 copper plates with dimensions of 150 mm × 150 mm × 3 mm were the materials employed in this work. The St 90 high carbon steel utilized for the friction stir welding (FSW) welding tool has dimensions of 18 mm for the shoulder diameter and 4 mm for the pin diameter. The FSW dissimilar aluminum-copper welding process was carried out using the Aciera AS 1 milling machine, with welding speed variations of 25 mm/min, 50 mm/min, 75 mm/min, and 100 mm/min. Other process parameters, such as pin geometry and rotational speed, are held constant in a cilynder form and around 910 rpm, respectively. Afterward the dissimilar aluminum 5005 and copper welded joint was evaluated by several testing. These tests included tensile testing according to the ASTM E8 standard, hardness testing, and metallography testing. According to the findings of this study, the hardness value in the HAZ and stir zone increases with the welding speed used. The aluminum HAZ, copper HAZ, and stir zone all recorded values of 42.7 VHN, 55.9 VHN, and 68.9 VHN, respectively, for the highest hardness value at a variation of 100 mm/min. The joint strength increases with increasing welding speed, reaching up to 43.66 MPa at 75 mm/minute welding speed with minimal weld defect, after which the strength decreases with increasing welding speed. [ABSTRACT FROM AUTHOR]

Heritage constructions are frequently very old, with many evident structural problems or faults. Heritage building risk assessment is understudied aspect on danger identification and risk assessment are incomplete. This paper review the Heritage Building's risk assessment, focusing on the process, the hazard, and the procedures applied to decrease it. Almost 58 publications were found using Scopus, IEEE Explore, and manual searches. After screening and eligibility, 12 articles were summarizing and analyzed. Therefore, 24% of risk assessment methodologies were semi-quantitative, 47% qualitative, and 29% quantitative, according to the articles. Half of respondents identified specific hazards, and the other half non-specific hazards. Due to the substance's toxicity, most highlighted hazards were chemical. Chemical risks to heritage structures were caused by climatic and atmospheric conditions. Chemical exposure impact has immediate or long-term health consequences thus; control methods must be identified first. Most articles employed two controls to reduce risk such as engineering control and administrative control. Meanwhile Personal Protection Equipment (PPE) categories as common control. Future projects will require fast, rapid, low-cost, and efficient risk assessment for heritage building risk management. By integrated qualitative and quantitative risk assessment methods may improve the risk assessment process and an online risk assessment may be needed to reduce heritage building accidents in the future. [ABSTRACT FROM AUTHOR]

This study aimed to determine the impact of using Google Earth on students' learning motivation in elementary schools in the Jakarta area. The practical contribution to this research is explaining to teachers that developing teaching variations using Google Earth technology can impact students' motivation in elementary schools in the Jakarta area. The educational benefit is that they can contribute to providing analysis results using Google Earth on students' learning motivation with the read, answer, discuss, explain, and create (RADEC) model approach. The study's results stated that 52% of students were motivated to learn by using Google Earth. [ABSTRACT FROM AUTHOR]

The potential and opportunities of the Muslim market in the world continue to increase, especially in Indonesia, where the majority of the population is Muslim. Capturing this potential and opportunity, business people continue to carry out various strategies to welcome this opportunity, one of the strategies carried out is to use an experiential marketing approach. Experiential Marketing is an approach that focuses on the consumer experience. The approach focuses on the five senses (sense), feelings (feel), ways of thinking (think), habits (act) and relationships (relate). Experience has a big influence on a consumer's buying decision. Emotional and rational aspects are the focus that business actors want to target, this is because the experience factor has an influence on the repurchase process. The experience that Mcdonalds wants to target is the protection of the religiosity of Muslim consumers. Internalization of Islamic values in Experiential Marketing as a marketing communication strategy is expected to capture the attention of Muslim consumers in Indonesia. This research is a kaulitative research with constructivism paradigm. The subject of this research is Experiential Marketing activities at McDonald's with the object of research being McDonalds Muslim consumers. This study uses a reception analysis research method which is a way to understand how the meaning of messages received by audiences (consumers) in determining the content or text of a media message. Through the existence of halal logos, prayer rooms, clean places, clear prices and female hijab waiters, Muslim consumers' experience of Islamic values is built and strengthened in the minds of consumers. The internalization of Islamic values built through Experiental Marketing has succeeded in understanding, interacting with Muslim consumers and empathizing with their needs through Islamic values. [ABSTRACT FROM AUTHOR]

Tolerance is a mindset and behavior that forbids prejudice towards various groups or groups within a community. Religions that uphold the authenticity and veracity of Islamic teachings include Islam, which instructs people to constantly respect and tolerate others. One of the cities in Indonesia that the government has named a city of tolerance is Kupang. Kupang is a municipality which is also the capital of East Nusa Tenggara (NTT) Province, where the Muslim population, including converts to Islam, is only 5% (minority) among the non-Muslim community. The purpose of this study is to determine the effectiveness of communication in promoting religious tolerance in Indonesian minority communities. The research methodology is interpretive and qualitative. FGD, literature research, in-depth interviews, and observation were the methods utilized to acquire the data. Data analysis method for interactive models. The study's findings indicate that religious tolerance in Kupang is running very well. The relationship between Muslims and non-Muslims is harmonious, helping each other, mutual cooperation, and mutual respect for each community's worship processions and major religious events. Large religious events are mutually supervised and shared equally between Muslims and non-Muslims. Even though Muslims only make up 5% in the Kupang area, this does not mean they are a minority among the majority. However, it cannot be denied that conflicts have occurred due to misunderstandings between Muslims and non-Muslims due to a significant lack of communication. Overall nevertheless, Kupang's tolerance for many religions fosters a safe, peaceful, and harmonious environment. [ABSTRACT FROM AUTHOR]

This paper aims to see how the impact of the covid pandemic on the transformation of digital culture in society in Ambon City is. The Covid pandemic has become an escalation of the transformation of digital culture and is the main marker for the creation of a conservative culture towards a digital culture. Although digital transformation has occurred, not all people in Ambon City are ready to face the transformation of digital culture. The lack of readiness of the mindset of the people of Ambon City is one of the triggers for individuals who are not ready to face the transformation of digital culture. The will to shift the mindset and explore the digital world has not grown well. The people of Ambon City do not yet have the urge to accept the existence of new technology and have the idea that technology is here to be studied in a disciplined and consistent manner. This research uses a literature study approach in elaborating the research topic. In the end, this study states that the impact of the covid pandemic has created a shift in conservative culture towards a digital culture. Thus, cultural changes in the midst of social life must be anticipated through a program to strengthen digital literacy. [ABSTRACT FROM AUTHOR]

Recently, there has been a growing interest in artificial skin on hydrogels as a potential alternative for animal testing to evaluate the efficacy and safety of new drugs or cosmetics. Synthetic polymers have been widely used due to their superior physicochemical properties. However, synthetic polymers such as polyvinyl alcohol (PVA) are limited by their poor biocompatibility and cell adhesion. Combining synthetic and natural polymers can improve these properties. Therefore, in this study, we aimed to investigate the effect of alginate and chitosan addition to PVA-based hydrogels on protein adsorption, cell viability and cell attachment. The addition of chitosan decreased protein adsorption, which was caused by the changes in electrostatic charge by PVA-chitosan interaction and changes in surface roughness. Primary human fibroblast cells cultured on PVA, PVA-alginate and PVA-chitosan had >80% viability which indicates the cytocompatibility of the hydrogels. More importantly, alginate and chitosan also improved the cell attachment on the PVA-based hydrogels. Taken together, the addition of both alginate and chitosan has the potential to improve PVA-based hydrogels for artificial skin application. [ABSTRACT FROM AUTHOR]

The conversion of conventional motor vehicles into electric vehicles has become a popular choice in efforts to reduce greenhouse gas emissions and air pollution from transportation. Electric vehicle conversion involves replacing gasoline or diesel engines with electric motors and retrofitted batteries. In this paper, we discuss the fundamentals of electric vehicle conversion, conversion methods, and the results of converted electric vehicle testing. We also explore the benefits and challenges of electric vehicle conversion. Some keywords related to this topic include electric vehicles, vehicle conversion, electric motors, batteries, and sustainable transportation. [ABSTRACT FROM AUTHOR]

The decision to relocate the National Capital was taken as one of the strategic steps to realize Indonesia's 2045 economic target. Meanwhile, the transportation sector has an important and strategic role in promoting economic development and national economic growth. It is planned that the development of an Intelligent Transportation System (ITS) will be carried out in Nusantara Capital City. However, there are obstacles in implementing the Intelligent Transportation System due to the large costs incurred for the ITS. The estimated budget needed for the development of the smart transportation sector in IKN is Rp. 582.6 billion. The government has a limited budget, which causes a financial gap so that if only relying on the state budget, it is certain that the provision and development of transportation infrastructure will not be able to meet the demands of needs that grow rapidly. As an effort to provide the ITS amid budget constraints, the government maximizing the Public Private Partnership (PPP) financing scheme. [ABSTRACT FROM AUTHOR]

The world is living in a future where people can order anything from their couch since everything is available digitally. Now with this application users can order even fuel just by tapping your mobile for doorstep refueling. The safety fuel container used for transporting fuel to the one who stuck in between the road. The container is made up of lightweight material and attaches to the two-wheeler, providing an additional fuel storage option for delivering the fuel. Online fuel delivery uses the efficiency of digital platforms and the power of technology to deliver fuel right to customer's doors. Using specialized mobile applications or websites, this service enables both private users and companies to order fuel. After a customer place an order, trained personnel with specialized vehicles deliver the requested quantity of fuel to the customer's location, whether it is a house, workplace, or other specified location. The fabrication process uses special techniques to ensure the container is structurally strong and leak-proof. A ground-breaking method for the secure transportation of fuels, especially in situations where people are stranded and in need of refueling, is the safety fuel storage container. This container can be swiftly and easily fastened to the carrier of a two-wheeler since it is composed of materials that are both lightweight and strong. This production method takes use of precise cutting, molding, and finishing techniques to ensure structural integrity and stop leaks. This abstract proposes a safe gasoline container to enhance the safety and ease of fuel supply, especially in emergency situations. [ABSTRACT FROM AUTHOR]

Potassium is a very important plant nutrient. There are many important sources of potassium present in the soil. The availability of potassium for plant absorption is highly variable and depends on the soil structure, dynamics and interaction of root with soil particles. The presence, absence, deficiency and excess availability of potassium can all affect plant growth in different ways. Potassium plays a very vital role in many plant physiological processes. Many scientists considered potassium second to nitrogen because of its importance in plant growth. Potassium deficiency affects plant growth and normal functions. [ABSTRACT FROM AUTHOR]

Software is an abstract thing, especially when it is developed. This is because of its nature that does not have a special physical form. Assignment is something that is very close to learning and is an inseparable part of the learning process in the world of lectures. Lack of student interest in doing assignments because it is considered a burden in the learning process. With the UI/UX Design, it is easier for developers to develop an application product. One method that is often used in the development of UI/UX Design is Design Thinking. Design Thinking is a method that concentrates on creating solutions that begin with a process of empathy for a particular need that is human cantered towards a continuous innovation based on the needs of its users. The purpose of this research is to produce an application that can help students in managing and doing assignments. So, in this study the method used is Design Thinking for making UI/UX Design. The result of this research is an application design that has been tested with usability testing. There are features that are tested, namely the registration feature, the add friend feature and the task creation feature as well as adding friends in the task. From the test results, the application design is declared successful because the user can run all the tests given. [ABSTRACT FROM AUTHOR]

Global warming, caused by an increase in the concentration of carbon dioxide and other greenhouse gases in the atmosphere, might have a negative impact on agriculture, forestry, and other industries that rely on the natural environment for production. Furthermore, global warming is expected to continue, resulting in the negative impact of high temperatures and the unavoidably associated drought stress on the growth of apricot trees in the following years. The detrimental effects of eliminating irrigation have been demonstrated in apricot trees primarily through a very slight increase in the cross-section areas of the trunks, the loss of some branches, and the inability of numerous branches to generate fruit buds the following year. Additionally, drought stress has been shown to limit growth and carbohydrate accumulation in Japanese apricot trees. [ABSTRACT FROM AUTHOR]

Device-free localization (DFL) techniques have emerged as a promising solution for tracking and locating objects or individuals without the need for specialized hardware. A popular DFL indoor technique that uses data from a dense wireless network to reconstruct the environment's spatial loss field is called radio tomographic imaging (RTI). RTI can achieve decent accuracy due to the relatively large number of wireless nodes compared to the localization area, which leads to high power consumption. In this paper, we present a performance evaluation for RTI with the exponential weighting model using different numbers of nodes. Experimental results from 8, 6 and 4 ESP-32 Wi-Fi nodes performed in 2x2.2 m2The localization area has a root-mean-squared error (RMSE) of 0.44m, 0.7m, and 1.1m, respectively. The results show that increasing the number of nodes from 4 to 6 nodes corresponds to a 36% improvement in accuracy, and from 6 to 8 corresponds to a 37% improvement in accuracy. [ABSTRACT FROM AUTHOR]

Since the RSA algorithm is no longer secure and a lot of research has been done to break down RSA security, it is necessary to do research by making a combination of modifications of RSA algorithms, in this case using enhanced RSA using fake modules, with RCCM (RC4 Chaotic Map) algorithms to produce a Hybrid Cryptosystem that is expected to be able to improve the security of secret messages. The combination process is done by encrypting the messages using the RCCM algorithm first, then the messages that have been encrypted back in the encryption using the enhanced RSA algorithm with fake modules. So the security of messages has been improved. As for the results of this study, the key generation process is automatically generated which produces keystream for RCCM and fake public key and fake private key for enhanced RSA. In addition, what distinguishes enhanced RSA from ordinary RSA is the use of four primes p, q, r, and s. as well as the application of chaotic maps to RCCM gives the advantage of the unnecessary use of generating keys manually. With these keys, the process of encryption and decryption can be carried out to generate a secret message. In addition, the program resulting from this research applies the kraitchik factorization algorithm as a medium of attack against the key. The conclusion of this study is that by doing a hybrid cryptosystem enhanced RSA and RCCM can be safer due to the occurrence of double encryption processes. In addition, an enhanced RSA algorithm determines a fake module where the value of X is a prime number so that if attacked using a kraitchik factorization algorithm it is difficult to find a factorization of X values that corresponds to the number of p, q, r, and s. [ABSTRACT FROM AUTHOR]

There are various stages in a building project. Planning comes first, and operation and maintenance come last. Different choices should be made during various stages based on presumptions, imperfect knowledge, and the experiences of construction experts. The word "change" in any construction project refers to a set of guidelines that permit additions, changes, and withdrawals from the contract agreement as a way to represent the amount and kind of work that has to be done or the nature of the assignment itself. The employer may direct the contractor to change the type, scope, or quality of the work, or just a portion of it, if he believes it is appropriate to do so. However, following these directions will result in a longer completion time and higher costs and reduce the productivity. This paper aims to highlighting on the parties who responsible for occurrence of change orders in school projects through collect data about 14 school projects in the city of Tikrit and Samarra and identifying the most common works in them in which it occurred change orders through visits to relevant institutions. Researcher found the consultant The most frequent reason to occurrence of change orders with value 78 percent in the paragraphs related to the soil investigation process and foundation excavation work, the consultant had a role in the occurrence of change orders as well as the design team had role with a high percentage in concrete works, earth burial, pavers cladding, fencing works, which have a frequency of 75 percent. [ABSTRACT FROM AUTHOR]

Indonesia has been committed to use 23% of Renewable energy by the year of 2025. One of energy source in renewable energy is wind energy with its potential energy as high as 60 GW with wind speed ranging from 3 to 6 m/s. One of suitable choice for low-speed wind turbine is Vertical Axis Wind Turbine (VAWT) type Lenz 2. Since there are few research about Lenz 2-type wind turbine, recent research is intended to study effect of wind speed (U), chord length (C) and turbine diameter (D) on performance of the wind turbine. The experiment uses number of blade (N) 3 blades, blade height (H) 400 mm and turbine diameter (D) of 300, 400, and 500 mm. Cord length of turbine is varied into 140, 160 and 180 mm. The turbine will be operated in wind speed of 4, 5, dan 6 m/s. Tip speed ratio, ratio between linear speed of turbine tip/end and wind speed, will decrease as turbine is connected with electrical generator. Produced power and moment will strongly affected by tip speed ratio. Result of experiment shows that highest Coefficient of Power (CoP) as high as 0,063 is obtained at tip speed ratio (λ) = 0,41, wind speed 4 m/s and chord length 180 mm. Same configuration will produce Maximum Coefficient of Moment (CM) as high as 0,19 is obtained at tip speed ratio (λ) = 0. Variation in chord length gives maximum Coefficient of Static Torque (CTs) at Chord length (C) 180 mm and angular position of θ = 1800. Variation in turbine diameter gives maximum Coefficient of Power maximum as high as 0,0889 at turbine diameter (D) = 300 mm, wind speed 4 m/s and tip speed ratio (λ) = 0,4. It can be concluded that optimum operation for Lenz2-type turbine is at wind speed 4 m/s, Chord length (C) 180 mm and turbine diameter (D) = 300 mm. The experiment agrees with fundamental concept that Lenz 2-type wind turbine has the best performance at low wind speed. The turbine is more suitable in Indonesia since most of region in Indonesia has low wind speed. [ABSTRACT FROM AUTHOR]

Electric vehicle demands rises in the last decades due to the trend shifting toward green energy sources. The main challenge in providing a reliable electric vehicle for this demand is to maintain the performance of the energy storage system, whereby the Li-ion battery is the most popular choice in recent years. In Li-ion batteries, the performance is highly dependent on the working temperature hence, battery cooling improvement is required. One of the core interests of the research in this field is by building a serpentine mini-channel cold plate. However, albeit having a high heat transfer coefficient, pressure drop in such system remains the problem for the system efficiency. In this study, a set of experiments were conducted to investigate the heat transfer performance and efficiency of a serpentine cold plate design in various flow regimes. The results demonstrate an improvement in the heat transfer performance, indicated by the high average Nusselt number (Nu) up to 2000 for both flow regimes. Furthermore, efficiency investigation found that laminar test case has higher efficiency although the turbulent flow provides larger Nu at around 2481.5, compared to 2215.7 in the laminar test case. The pressure drop increases considerably, reducing the cold-plate efficiency from 21.9 to only 8.8. This indicates that the enhancement by increasing the Reynolds number (Re) in such a design is not recommended due to the high power requirement. [ABSTRACT FROM AUTHOR]

In this modern era, engineers are greatly helped with various software, including ETABS software. Structural design, especially buildings carried out with software before the 1980s, either in the seismic region or in the non-seismic, do not consider the existence of stairs because stairs offer greater strength and stiffness and significantly affect the distribution of seismic forces. In this paper, the structure of a 6-story building with and without stairs is modeled and analyzed using ETABS Nonlinear v.9.7.4 software. This paper aims to determine the effect of stairs, in this case, the structure's natural vibration period. Furthermore, the results of the analysis of the building structure without and with stairs using ETABS Nonlinear v.9.7.4 software have been obtained. The analysis results show that the stairs are also modeled in designing the building structure with software. So, the value of the natural vibration period of the structure becomes smaller, with a difference for mode 1 of 11% and mode 2 of 12%. [ABSTRACT FROM AUTHOR]

Resistance spot welding (RSW) is widely regarded as the predominant technique employed in the automotive sector for the purpose of joining thin sheets. Nevertheless, a significant number of intricate applications do not provide access from both sides of the sheet metal, a prerequisite for this procedure. The gap is addressed by an examination of a one-sided Tungsten Inert Gas (TIG) spot welding method employed to joint dissimilar metals, specifically carbon steel and stainless steel. The objective of this study is to examine the influence of welding current on the tensile load capacity of TIG-spot joint composed of dissimillar metals. The materials utilized in this study are low carbon steel and stainless-steel plates, both having dimensions of 10 cm in length, 3 cm in width, and a thickness of 0.8 mm. (standard AWS D8.9). Welding current was set up of 70, 80, 90, and 100 amperes with a constant welding time of 4 seconds. The result shows that a welding current of 100 A provides the weld zone with increased heat, allowing for better material penetration and fusion, thus increasing the tensile load capacity. [ABSTRACT FROM AUTHOR]

A novel type of magnetorheological (MR) foam that provides unique porous structure with embedded magnetic particles somehow could response to magnetic field stimuli continuously, actively and reversibly. Its low density and controllable properties have rendered MR foam to be a new potential smart material for advance applications such as smart actuators or sensors technology. Unfortunately, the rheological properties in terms of stiffness or known as storage modulus of MR foam is still rather limited, in the range of below than 1 MPa to withstand frequencies with high amplitude displacement during the operational system. Therefore, the aim of this research is to enhance the rheological properties of MR foam in terms of storage modulus by adding silica nanoparticles as an additive. In this study, MR foams were fabricated with different compositions of silica nano-particles in the range of 0 to 5 wt.%, with 1 wt.% increment. The rheological testing was carried out using modular compact rheometer (MCR) under different frequency inputs in the range of 1 to 10 Hz, with the absence and presence of magnetic field at 0 T and 0.8 T, respectively. The finding has revealed that the storage modulus of MR foam has significantly increased up to ∼273% during the off-state condition and further increased to ∼346% at the on-state condition, indicating higher stiffness of MR foam with silica nanoparticles as compared to non-additive MR foam. [ABSTRACT FROM AUTHOR]

Studies on smart materials called Magnetorheological (MR) materials has attracted interest from numerous researchers due to its properties that can be manipulated through applications of magnetic fields. Owing to its wide potential application in various field, improvement on its properties in terms of rheology, tribology, thermal stability as well as electrical conductivity need to be optimized for a material to be possibly applied in real applications. Graphite on other hand is a carbon-allotrope that has been utilized in MR materials which acts as a filler or additives and was reported to significantly improves the distinct properties in different types of MR materials. Therefore, this paper has summarized and discussed the effect of graphite's addition on the properties of several types of MR materials especially on its electrical conductivity, thermal stability, tribological as well as rheological properties to provides an insight view of graphite as a future potential additives and filler in MR materials for upcoming research. [ABSTRACT FROM AUTHOR]

The development of composite has spread in every industrial line. Composite is a solution to the demand for material with superior characteristics. One of the most needed characteristics is burning resistance. Extensive composite application encourages continuous innovation, including in terms of the use of natural fibers as a reinforcement. Research related to natural fibers is needed as an alternative to giving birth to environmentally friendly and economical composite. One of the natural fibers that can be utilized is bamboo fiber. Plants with very high growth rates are expected to be a sustainable alternative. The purpose of this study is to manufacture and test the burn resistance and mechanical property of the glass plate/bamboo fiber reinforced composite. There are 3 types of plates that will be manufactured, namely epoxy plates, glass fiber reinforced composite, and glass/bamboo fiber reinforced composite. glass fiber reinforced composite is manufactured with 4 glass fiber layers. Hybrid composites are manufactured with layers in the form of 2 glass fiber layers, bamboo layers, and 2 glass fiber layers in sequence. The GFRP and hybrid composites manufacturing method is by vacuum assisted resin transfer molding. The treatment of the 3 types of plates is burning with a duration of 15, 30, 45, and 60 seconds. The burnt results will be cut and tested according to ASTM D790. The results of the burn and bending tests show that the glass plate/bamboo fiber reinforced composite shows the highest burn resistance and the smallest decrease in bending power due to burnt treatment compared to the other 2 types of plates. [ABSTRACT FROM AUTHOR]

These days, malicious apps represent a serious threat to Android consumers, developers, and app stores. Because malware has become more complicated, it has undergone constant modification, and its attacks have become more destructive, researchers are working to develop new techniques for detecting it. Having a clean and balanced dataset is one of the biggest obstacles in malware detection. In this research, a detection approach to detect malware proposed to increase precision and decrease error rates by preprocessing and balancing the dataset. To attain these purposes, feature selection using C4.5 method was used to choose the most important and relevant features and the inefficient features are eliminated. The Synthetic Minority Oversampling Technique (SMOTE) approach used in the suggested method to further balance the dataset. Then, the Random Forest (RF) classifier was used to create the detection model. The data cleaning techniques and the use of SMOTE enhance the model performance. The obtained results indicate that the criteria of Precision, Recall, Accuracy and F1 score are high. The proposed methodology demonstrates efficacy in the detection of both pre-existing malware within the dataset and newly emerging malware. The accuracy for unbalanced dataset using RF classifier where (94.79,93.28,97.06,96.66) for (all feature, 10 features, 20 features, 40 features) respectively and the accuracy for balanced dataset when classified using RF classifier where (97.75,94.27,98.83,98.19) for (all feature, 10 features, 20 features, 40 features) respectively, CIC-AndMal2017 dataset used to in this research. [ABSTRACT FROM AUTHOR]

The Nonlinear Schrodinger Equations (NLSEs) have been solved by using the Reduced Differential Transform Method (RDTM). The implemented approach produces a semi-analytic solution in an infinite power series that converges to a closed-form equation, which is oftentimes the exact solution. This approach provides the advantage of generating analytical solutions without requiring perturbation, linearization, or discretization. The results demonstrate that the RDTM produced highly precise solutions for NLSEs. Furthermore, the solutions indicate that the applied method significantly reduces computational workload for NLSEs and holds promise for extensive application in various complex partial differential equations across engineering and scientific domains. Graphical representations are presented to portray the solution and the accuracy of the RDTM. [ABSTRACT FROM AUTHOR]

In Indonesia, the Covid-19 epidemic is still going strong, is a serious threat to the world of education, especially for private universities. One of the elements that might increase the quality of the college and assist lecture activities is the achievement of students in learning delivered by lecturers during the covid-19 epidemic. As a result, the goal of this research is to use the Data Mining C4,5 method to classify the amount of student learning success. This study uses several parameters such as the Motivation factor, the How to Learn factor, the Learning Materials factor, and the Facility factor. The research data was obtained through a questionnaire of 200 data. The classification results are 14 rules consisting of 6 successful rules and eight unsuccessful rules, with the facility factor being the dominant factor. In addition, it produces 82% accuracy, 81.08% precision, 95.49% recall and AUC (optimistic): 0.897 (good classification). [ABSTRACT FROM AUTHOR]

A user identification scheme of trusted authority-user-service provider is used to identify a user's identity in an open network before the user is allowed to communicate with the related entities electronically. Recently, Chen et. al published a user identification scheme based on multiple hard problems, factorization, and discrete logarithm. The scheme is secure against common cryptographic attacks but the algorithms involving both the user and service provider are time consuming. The use of multiple hard problems is still practiced in this paper as Chen's scheme, and at the same time, improvements have been made in terms of time complexity in the algorithm. To examine the capabilities of the algorithm, the computational complexity of user and service provider is tested, which is then exchanged to Tmul, which is the time required to perform the multiplication operation for Chen's scheme and the proposed scheme. After the comparison is made, the results show that the time complexity of the improved scheme is significantly better than Chen's while maintaining the security level. [ABSTRACT FROM AUTHOR]