General Balance Research Articles

Design and Development IoT based Smart Energy Management Systems in Buildings through LoRa Communication Protocol

Energy management is a vital tool for reducing significant supply-side deficits and increasing the efficiency of power generation. The present energy system standard emphasizes lowering the total cost of power without limiting consumption by opting to lower electricity use during peak hours. The previous problem necessitates the development and growth of a flexible and mobile technology that meets the needs of a wide variety of customers while preserving the general energy balance. In order to replace a partial load decrease in a controlled manner, smart energy management systems are designed, according to the preferences of the user, for the situation of a full power loss in a particular region. Smart Energy Management Systems incorporate cost-optimization methods based on human satisfaction with sense input features and time of utilization. In addition to developing an Internet of Things (IoT) for data storage and analytics, reliable LoRa connectivity for residential area networks is also developed. The proposed method is named as LoRa_bidirectional gated recurrent neural network (LoRa_ BiGNN) model which achieves 0.11 and 0.13 of MAE, 0.21 and 0.23 of RMSE, 0.34 and 0.23 of MAPE for heating and cooling loads.

Strain-Balanced Organic Semiconductor Film for Improving the Stability of Organic Field-Effect Transistors.

Strain-induced aggregate state instability in organic semiconductor (OSC) films is a critical and bottleneck issue in the practicalization process of organic field-effect transistors (OFETs), but this issue lacks deep insight and effective solutions for a long time. Herein, we developed a novel and general strain balance strategy for stabilizing the aggregate state of OSC films and enhancing the robustness of OFETs. The charge transport zone in OSC films located at the OSC/dielectric interface always suffers from the intrinsic tensile strain induced by substrates and tends to dewet. By introducing a compressive strain layer, the tensile strain can be well balanced and OSC films attain a highly stable aggregate state. Consequently, the OFETs based on strain-balanced OSC heterojunction films exhibit excellent operational and storage stability. This work provides an effective and general strategy to stabilize OSC films and gives guidance in constructing highly stable organic heterojunction devices.

Exact solutions for geophysical flows with discontinuous variable density and forcing terms in spherical coordinates

ABSTRACT We present here exact solutions to the equations of geophysical fluid dynamics that depict inviscid flows moving in the azimuthal direction on a circular path, around the globe, and which admit a velocity profile below the surface and along it. These features render this model suitable for the description of the Antarctic circumpolar current (ACC). The governing equations we work with–taken to be the Euler equations written in spherical coordinates–also incorporate forcing terms which are generally regarded as means that ensure the general balance of the ACC. Our approach allows for a variable density (depending on the depth and latitude) of discontinuous type which divides the water domain into two layers. Thus, the discontinuity gives rise to an interface. The velocity in both layers and the pressure in the lower layer are determined explicitly, while the pressure in the upper layer depends on the free surface and the interface. Functional analytical techniques render (uniquely) the surface and interface-defining functions in an implicit way. We conclude our discussion by deriving relations between the monotonicity of the surface pressure and the monotonicity of the surface distortion that concur with the physical expectations. A regularity result concerning the interface is also derived.

Aspects of the Life Cycle of Chirostoma jordani (Pisces: Atherinopsidae) in A Periurban Lake from Mexico City: An Ecophysiological Assessment

Chirostoma jordani is an endemic species of Mexico, whose populations due to different natural and anthropogenic causes, have experienced a notable decline in recent decades, endangering their permanence in their natural habitat, including the Xochimilco canals. Therefore, this study focused on updating the status of the species in Xochimilco through an ecophysiological analysis with a bioenergetic approach, using as a model the elements (P and R) of the general energy balance equation. The measured performance indicators of the species during an annual cycle were: analysis of the structure of size (total length, TL and weight, W), body composition of the tissue: wet weight (WW), dry weight (DW), body water content (WC), nitrogen and energy content, growth rate (GR) = production (P), and metabolic rate (R) in relation to body weight in two contrasting seasons of the year (dry and rainy), as well as assimilation efficiency (P + R). The physicochemical dynamics of the habitat of the species was evaluated in all the sampling months, through eight water quality variables and was correlated with the previously indicated performance measures using discriminant analysis. The composition by sizes indicated that the spawning season and the entry of recruits into the population take place during the dry season (February - May), reaching the highest growth rates in the period March - April: 0.23 mm TL/ day, as well as the highest values in: assimilation (2,457.2 cal/g DW/day), energy expenditure in metabolism and tissue energy enrichment (CI95%: 3,493.6 – 4,762.6 cal/g DW), as opposed to the rainy season of the annual cycle: August – November, which is defined by the greatest environmental heterogeneity with extreme values of pH, total solids and nitrite concentrations that interact as constraints on the performance of the population. It is concluded that the population of C. jordani in the study area is subject to extreme environmental pressures, and the quantitative indicators used are of great value to identify and diagnose the risk status of the species and should be used to delimit future actions in its management and conservation.

Empirická verifikace vztahu mezi saldem hospodaření sektoru vládních institucí a běžného účtu platební bilance: Případ zemí Evropské unie

The article focuses on the relationship between the general government balance and the current account of the balance of payments. The aim is to summarize the existing knowledge about the relationship based on the twin deficit theory and to carry out an empirical verification. As part of the analysis, the Granger causality method is first applied to each EU country separately, and then the threshold panel regression method is used. For the subsequent estimation of the threshold panel model, the direction of the relationship from the general government balance to the current account is considered based on the results of Granger causality. Within the panel, the dependence of the balances on the level of the general government debt to GDP is tested. First, the relationship and its strength are verified in all EU countries. Due to the diversity of EU countries, the economies are subsequently aggregated into sub-panels. Threshold values for general government debt affecting the strength of the relationship between balances are different for individual panels and depend, among other things, on the perception of these countries by the financial markets and often also on the (high) indebtedness of the private sector, which usually requires a more drastic fiscal policy response.

Microstructures in a carburized steel after isothermal pearlitic treatment

The influence of carbon concentration variations on pearlite formation (20 h at 600 °C) in a case-carburized steel is investigated. The resultant microstructure shows three distinct regions: carburized case, a transition region, and the original core. The microstructural transition from the case to the core regions is observed to be relatively sharp. The investigated region of the carburized case (0.9 wt.% C) contains two types of pearlite: ferrite + cementite and ferrite + M23C6, where the pearlitic aggregate with M23C6 shows faster formation kinetics. The kinetics of pearlite formation in the transition region (0.3 wt.% C) is very slow and is observed with only M23C6 carbide. Only around 40% austenite decomposes into pearlite in the transition region, which, in comparison to the carburized case region of 0.9 wt.% C is a fraction that is lower by a factor of two. Pearlite is absent in the investigated core region (0.16 wt.% C). The microstructure in this region is predominantly martensite and pro-eutectoid ferrite, with a fraction of ferrite well below the equilibrium fraction. Ferrite formation in this region is limited by the redistribution of mainly Ni, Mn, and Cr, and their resulting solute drag effect on the austenite/ferrite interface. A thermodynamic and kinetic argumentation of these observations is provided with the help of thermodynamic data, precipitation simulations, and a general mixed-mode Gibbs energy balance model.

Existence of weak solutions for a nonhomogeneous incompressible cell–fluid Navier–Stokes model with chemotaxis

This work is concerned with the mathematical analysis of a general cell–fluid Navier–Stokes model with the inclusion of chemotaxis. This general model relays on a mixture theory multiphase formulation. It consists of two mass balance equations and two general momentum balance equations, respectively, for the cell and fluid phase, combined with a convection–diffusion–reaction equation for oxygen. We investigate the existence of weak solutions in a two‐ or three‐dimensional bounded domain when the fluids are assumed to be incompressible with constant volume fraction.

THE EFFECTIVENESS OF FISCAL POLICY IN ATTRACTING FOREIGN DIRECT INVESTMENT(LIBYA CASE STUDY)

The primary goal of this study was to examine the role of fiscal policy in stimulating and attracting foreign investment to Libya from 1990 to 2020, specifically through its components of investment spending policy, tax policy, and general budget balance.The role of tax policy through the stimulus provided to investors to invest their capital, and the analytical, descriptive, and standard approach have been relied upon as they are the appropriate approaches for the nature and requirements of the study, Through analyzing the financial policy tools affecting the attraction of foreign direct investment and a standard analysis, building a model that is compatible with the variables of the study The results of the descriptive analysis showed that the investment spending policy is an expansionary policy in cases of high oil revenues, and a contractionary policy when oil revenues decline. Because of the strength of fiscal policy tools (investment spending and the general budget balance) to attract scarce foreign direct investment due to their significant impact, and the weakness of tax policy due to its insignificant impact on foreign direct investment, it is clear that the tax policy must be activated. By creating a tax system that helps attract foreign direct investment, rationalizing investment spending to create a suitable climate for attracting investment, working on political and economic stability, and activating laws that help attract foreign direct investment.

CIB2 and CIB3 Regulate Stereocilia Maintenance and Mechanoelectrical Transduction in Mouse Vestibular Hair Cells.

The mechanoelectrical transduction (MET) protein complex in the inner-ear hair cells is essential for hearing and balance perception. Calcium and integrin-binding protein 2 (CIB2) has been reported to be a component of MET complex, and loss of CIB2 completely abolishes MET currents in auditory hair cells, causing profound congenital hearing loss. However, loss of CIB2 does not affect MET currents in vestibular hair cells (VHCs) as well as general balance function. Here, we show that CIB2 and CIB3 act redundantly to regulate MET in VHCs, as MET currents are completely abolished in the VHCs of Cib2/Cib3 double knock-out mice of either sex. Furthermore, we show that Cib2 and Cib3 transcripts have complementary expression patterns in the vestibular maculae, and that they play different roles in stereocilia maintenance in VHCs. Cib2 transcripts are highly expressed in the striolar region, and knock-out of Cib2 affects stereocilia maintenance in striolar VHCs. In contrast, Cib3 transcripts are highly expressed in the extrastriolar region, and knock-out of Cib3 mainly affects stereocilia maintenance in extrastriolar VHCs. Simultaneous knock-out of Cib2 and Cib3 affects stereocilia maintenance in all VHCs and leads to severe balance deficits. Taken together, our present work reveals that CIB2 and CIB3 are important for stereocilia maintenance as well as MET in mouse VHCs.SIGNIFICANCE STATEMENT Calcium and integrin-binding protein 2 (CIB2) is an important component of mechanoelectrical transduction (MET) complex, and loss of CIB2 completely abolishes MET in auditory hair cells. However, MET is unaffected in Cib2 knock-out vestibular hair cells (VHCs). In the present work, we show that CIB3 could compensate for the loss of CIB2 in VHCs, and Cib2/Cib3 double knock-out completely abolishes MET in VHCs. Interestingly, CIB2 and CIB3 could also regulate VHC stereocilia maintenance in a nonredundant way. Cib2 and Cib3 transcripts are highly expressed in the striolar and extrastriolar regions, respectively. Stereocilia maintenance and balance function are differently affected in Cib2 or Cib3 knock-out mice. In conclusion, our data suggest that CIB2 and CIB3 are important for stereocilia maintenance and MET in mouse VHCs.

A general non-Fourier Stefan problem formulation that accounts for memory effects

The Stefan problem is the classical model of a melting phase change. In heterogeneous systems, such phase changes can exhibit non-Fourier (anomalous) behaviors, where the advance of the melt interface does not follow the expected time scaling. These situations can be modeled by replacing the derivatives, in the governing partial differential equations, with fractional order derivatives. In particular, replacing the time derivatives leads to non-Fourier models that account for memory effects in the system. In this work, by using appropriate time convolution integrals, a general thermodynamic balance statement for melting phase problems, explicitly accounting for memory effects, is developed. From this balance, a general model formulation applicable to problems involving melting over a temperature range (i.e., a mushy region) is derived. A key component in this model is the representation of memory effects through the use of fractional derivative based constitutive models of the enthalpy and heat flux. On shrinking the mushy region to a single isotherm, a general sharp interface melting model is obtained. Here, in contrast to the classic Stefan problem, the fractional derivatives induce a natural regularization, such that the constitutive models for enthalpy and heat flux are continuous at the melt interface; a result confirmed through numerical simulation. To further support the theoretical findings, a physical example of a non-Fourier Stefan problem is presented. Overall the development and results in this paper underscore the importance of explicitly relating the development of fractional calculus models to the appropriate thermodynamic balance statements.

ÇOCUK DOSTU OTEL DEĞERLENDİRMESİ: SİDE BÖLGESİ ÖRNEĞİ

Today, people research the tourism business where they will stay for holiday in many ways and they prefer it according to the features of the business and the services it provides. For this reason, tourism businesses pay more attention to different services in order to gain competitive advantage by responding to the needs and expectations of tourists in the best way. Families with children tend to tourism businesses that can meet the expectations of their children and make them satisfied more than themselves when they go on vacation. In order to be the tourism business preferred by the tourists who have such expectations, some hotels offer more and differentiated services for families and their children to receive a safe, comfortable and satisfying holiday service. These hotels are referred to as “child-friendly hotels”. In the process of making a choice, the evaluations made by the guests on different platforms regarding child-friendly hotels are of great importance for families. As a result of the evaluations, families prefer hotels that are suitable for them and their children. In this study, it is aimed to evaluate the child-friendly hotels in the Side region within the framework of the points they have received from their guests according to their criteria, to rank them according to their scores and to determine the degree of importance of the criteria. Among the child-friendly hotels in the region, the evaluations about 19 hotels on the internet were reached, but due to the deficiencies in the evaluations, 8 hotels with accurate data were selected and these hotels were analyzed with the TOPSIS method. Within the scope of the analysis, the general score, features, cleanliness, comfort, food, price balance, service, location, building and rooms criteria of the hotels were evaluated. As a result of the analysis, an evaluation ranking was made among the hotels in the region according to the guest scorings.

Decoupled Control for Double-T Dc-Dc MMC Topology for MT-HVdc/MVdc Grids

This paper proposes a decoupled control of a dc-dc modular multilevel converter (MMC) based on a double-T topology intended for multi-terminal high voltage direct current (MT-HVdc) transmission systems or emerging distribution systems operating in medium voltage direct current (MVdc). The aim of the proposed control strategy is to obtain an input current with reduced harmonic content and to eliminate the output ac common-mode voltage, which is not allowed in MT-HVdc systems. The control strategy consists of injecting two circulating ac currents and two dc currents that allow the energy balance between the arms of the converter and the general energy balance of the topology. The dc and ac currents are decoupled and allow control over load variations and reference changes in the dc-links. The proposed topology is mathematically modeled and the control method is then derived. Simulation results are presented to validate the proposed system.

ANALYSIS OF CHANGES IN THE INPUT OUTPUT STRUCTURE OF DKI JAKARTA PROVINCE IN 2016 AND 2024: USING THE DYNAMIC INPUT OUTPUT (DIO) MODEL

This study aims to look at the estimated structural changes in the input output table for DKI Jakarta Province in 2024. Estimates for changes in the structure are obtained by making projections of the input-output table for DKI Jakarta Province in 2024 using the Dynamic Input Output (DIO) model, namely by embedding the econometric model into the input output model, using the 2016 based year, 52 economic sectors, and 22 data series from 2000 to 2021.DIO is a hybrid model that places more emphasis on non-survey aspects that combines macro-econometric equations with identity equations in input-output analysis. This model has many dynamic equations consisting of 425 equation model. The parameters value of the equation are estimated using a combination of three estimation methods: (1) Ordinary Least Square, (2) First Order of Autoregressive, and (3) Second Order of Autoregressive. The general balance value in the DIO model is formulated using the Gauss-Seidel iteration "RAS" method.The results of the study show that in 2024 the corporate services sector, the chemical, pharmaceutical and traditional medicine industry sector, and the transportation equipment industry sector are the dominant sectors in shaping changes in the structure of intermediate demand. The Construction Sector, the Corporate Services sector, and the transportation equipment industry sector are the dominant sectors shaping changes in the structure of intermediate input. The construction sector, the real estate sector, and the wholesale and retail trade sector, not cars and motorcycles, are the dominant sectors in shaping changes in the structure of final demand. For the gross value added component, the Wholesale and Retail Trade sector, Not Cars and Motorcycles, the Private Information and Communication sector, and the Financial Intermediary Services sector other than the Central Bank are the largest sectors in the formation of structural changes.

Political Budget Cycles in Early Versus Regular Elections: The Case of Serbia.

The paper analyses Political Budget Cycles in the context of a young post-communist democracy, Serbia. The authors deploy well-established methodological (time series) approaches to examine the general government budget balance (fiscal deficit) in conjunction with elections. The findings suggest that there is clear evidence of higher fiscal deficit prior to elections-however, this is the case only for regular (scheduled) elections and not so for snap (early called) elections. The paper contributes to the PBC literature by revealing different incumbent behaviour in regular versus early elections, thus highlighting the importance of distinguishing between these types of elections in the domain of PBC research.

Assessment of the impact of renewable energy on the balanced development and preservation of the carbon cycle in the regions of the Far Eastern Federal District of Russia

The study took into account that renewable energy does not change the biospheric material and energy flows, which ensures the achievement of a general balance. To assess it, a special indicator of balance was used, which characterizes the ratio in energy indicators between industrial activity in the region and the state of its ecosystems. In addition, the need of carbon cycle preservation, which may be disturbed due to the peculiarities of the ecosystems of the regions, was taken into account. It was set that due to the existence of large areas of forest and swamp ecosystems, in all Far Eastern Federal District regions, ecosystems are effective absorbers of carbon dioxide. The total absorption of carbon dioxide in the district is 810.98 million tons. In nine regions of the District, industrial activity and ecosystems are in a balanced state in terms of energy indicators: in the Amur and Magadan Oblast, Khabarovsk, Kamchatka and Zabaykalsky Krai, the Republic of Buryatia and Sakha Republic (Yakutia), Chukotka Autonomous Okrug. The balance indicator in Primorsky Krai and the Sakhalin Oblast is greater than one, which indicates a violation of the balance. To achieve it in these regions, it will be necessary to increase the share of renewable energy in regional energy balances to 50% and 21%, respectively.

거골하 관절 축 균형운동 재활프로그램이 아킬레스건염 엘리트 운동선수의 발목 동적 안정성과 근 기능에 미치는 효과

The purpose of this study was to evaluate the visual analog scale (VAS), dynamic stability of the ankle joint, and isokinetic by applying SJABE to elite player with Achilles tendinitis. The purpose was to investigate the effect on muscle s trength. The s ubj ects o f this s tudy were 22 a thletes diagnosed with Achilles tendinitis and performed SJABE (n=11) and general balance exercise (GBE) (n=11) 3 times a week, 60 minutes each for 6 weeks. For the data of this study, the mean and standard deviation were calculated using the IBM SPSS 22.0 statistical program, and the effect of the subtalar joint axis balance exercise was performed by two-way repeated measures ANOVA. Paired t-test and verification of differences between groups were performed by independent t-test. In addition, the significance level for all statistical processing was set below α=0.05. Results of the study, SJABE Achilles tendinitis VAS (G: p＜.005, T: p＜.000, G×T: p＜.000), ankle dynamic stability (T: p＜.000, G×T: p＜.008), plantar flexion strength 60°/sec (T: p＜.000, G×T: p＜.000), and dorsi flexion strength 60°/sec (T: p＜.000) were improved. As a result of comparing SJABE and GBE in athletes with Achilles tendinitis, pain scale, ankle joint dynamic stability, and isokinetic muscle strength reduced Achilles tendon pain and improved ankle stability and muscle strength in both groups. Through this study, SJABE was found to be effective in preventing and rehabilitating damage to the Achilles tendon and ankle joint, and it is expected that it will lead to a safe daily life and a quick return to the sports field.

Accounting for nonvanishing net-charge with unified balance functions

The use of charge balance functions in heavy-ion collision studies was initially proposed as a probe of delayed hadronization and two-stage quark production in these collisions. It later emerged that general balance functions can also serve as a probe of the diffusivity of light quarks as well as the evolution of the systems formed in heavy-ion collisions. In this work, we reexamine the formulation of general balance functions and consider how to best define and measure these correlation functions in terms of differences of conditional densities of unlike-sign and like-sign particle pairs. We define general balance functions in terms of associated particle functions and show that these obey a simple sum rule. We additionally proceed to distinguish between balance functions expressed as differences of conditional densities valid irrespective of experimental acceptance boundaries and bound balance functions that explicitly account for the limited acceptance of experiments. General balance functions are additionally extended to accommodate strange, baryon, as well as charm and bottom quantum numbers based on the densities of these quantum numbers.

Modeling of hydrogeological processes in irrigation areas based on modern programs

This article uses modern modeling systems to assess the impact of intensive irrigation on the state of groundwater and the rocks of the aeration zone. In doing so, existing ideas about aquifer recharge, flow, consumption, and changes in groundwater quality were considered, studying these areas' hydrogeological and reclamation hydrogeological conditions. Groundwater balance analysis was performed based on the results of solving the inverse non-stationary problem for total groundwater deposits. The correspondence of underground water at control points during this period (results of regular observations of Kashkadarya GGS) and underground water seeping into the collector-drainage network in natural and model conditions was observed. According to the research results, renewable (flowing) underground water reserves in the general balance are 15671-2476 = 13195 m3/day, while the indicators of consumption and saturation of underground water reserves are equal to 2476 and 8915 m3/day. It was proved based on the results obtained with sample solutions to the problem, taking into account the rise or fall of the level of underground water in different parts. The article determined that the accumulation of underground water reserves in the region is mainly due to the increase of infiltration in newly developed lands. At the beginning and end of the modeling period, the depth of the groundwater table was shown using maps and marked with numbers.

Modeling the balanced development of the region in the transition to renewable energy and maintaining the carbon cycle in land use

The article provides the author’s model for assessing the level of sustainability in the development of a region due to an increase in the share of alternative energy sources and on the premise of maintaining a carbon balance. It was taken into account that the possibility of maintaining the carbon balance in the region is greatly influenced by agricultural activities and landscape features of the region. Thus, in some regions it is necessary to allocate additional areas of ecosystems with a special nature management regime to maintain the carbon cycle. The model generated was tested on the example of the regions of the Ural Federal District of the Russian Federation. It has been established that carbon dioxide emission from anthropogenically disturbed territories is present in four regions of the district: Sverdlovsk (17.9 million tons), Chelyabinsk (45.04 million tons), Kurgan (40.9 million tons) and Tyumen (13.03 million tons) regions. Thus, even if the share of renewable energy in the energy balance increases to 37-93%, and the general balance is achieved, the carbon cycle is still disrupted. In order to preserve it, additional inclusion of up to 8.5-57.4% of the region territories into the special nature management regime is required.

NOVEL MODEL FOR ESTIMATING GAS-SOLID TWO-PHASE FLOW RATE IN A HORIZONTAL PIPE

Dilute and dense conveying systems through pipelines are a common practice in our everyday life. It is used in many industries to convey a mixture of gas and solids from one location to another through pipes. Gas-solid transport is desirable in some industries but unwanted in others. Depending on the density, size, and shape, these solid particles may result in erosion and subsequent damage to piping and other equipment. Understanding the gas-solid two-phase flow dynamics can help develop efficient and cost-effective pipe transport systems, thereby mitigating the problems associated with the gas-solid two-phase flow. Models for estimating volumetric flow rates and other gas-solid two-phase flow properties are scarce as most are very complex, expensive, and unavailable proprietary commercial software. This study, therefore, developed a simple model using the general energy balance equation and relevant mixing theories for estimating the volumetric flow rate of natural gas-solid two-phase flow in horizontal pipes. The results from the model showed that the gas-solid flow rate is a function of pipe diameter, pressure drop, pipe length, solid volumetric concentration, solid-to-gas density ratio, and solid-to-gas friction factor ratio.