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Bukantaitė, Simona, i Dalia Čikotienė. "Modernization of Shot Blasting Procedure". Jaunųjų mokslininkų darbai 48, nr 2 (20.12.2018): 32–38. http://dx.doi.org/10.21277/jmd.v48i2.226.
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Every company has the intention to produce the best quality product and get the highest profit. In the 21st century, it has become much harder to stay competitive because consumers have a large selection of equivalent goods. This article analyses company’s X growth in reference to the shot blasting process in order to investigate if modernization is feasible. Tests of shot blasting work place safety were carried out and all information submitted in a professional risk identification card. Calculations were made to investigate if the robotisation is profitable. Virtual simulation of robotic line was created with Visual Components software.
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Mahdjoub, Ilyes, Fanny d’Acremont, Nicolas Mauduit, Gael Grimandi, François Rondeau, Vincent Letocart, Thibaut Manigold, Julien Plessis, François Huchet i Patrice Guerin. "Is the MitraClip® procedure profitable in a high-volume French hospital?" Archives of Cardiovascular Diseases 112, nr 11 (listopad 2019): 691–98. http://dx.doi.org/10.1016/j.acvd.2019.07.002.
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Euchi, J., i H. Chabchoub. "Tabu Search metaheuristic embedded in Adaptive Memory Procedure for the Profitable Arc Tour Problem". IFAC Proceedings Volumes 42, nr 4 (2009): 990–95. http://dx.doi.org/10.3182/20090603-3-ru-2001.0023.
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Huchet, François, Fanny d’Acremont, Vincent Letocart, Patrice Guerin, Gael Grimandi i Thibaut Manigold. "Is transcatheter aortic valve replacement a profitable procedure in a high-volume French hospital?" Archives of Cardiovascular Diseases 111, nr 8-9 (sierpień 2018): 534–40. http://dx.doi.org/10.1016/j.acvd.2018.01.003.
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Popp, A. John, Todd Scrime, Benjamin R. Cohen, Paul J. Feustel, Karen Petronis, Sharon Habiniak, John B. Waldman i Margaret M. Vosburgh. "Factors affecting profitability for craniotomy". Neurosurgical Focus 12, nr 4 (kwiecień 2002): 1–5. http://dx.doi.org/10.3171/foc.2002.12.4.5.
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Object The authors studied factors influencing hospital profitability after craniotomy in patients who underwent craniotomy coded as diagnosis-related group (DRG) 1 (17 years of age with nontraumatic disease without complication) and who met their hospital's craniotomy pathway criteria and had a hospital length of stay 4 days or less during a 20-month period. Methods Data in all patients meeting these criteria (76 cases) were collected and collated from various hospital databases. Twenty-one cases were profitable and 55 were not. Variables traditionally influencing cost of care, such as surgeon, procedure, length of operation, and pharmacy use had no significant effect on whether a patient was profitable. The most important influence on profitability was the individual payor. Cases in which care was reimbursed under the prospective payment system based on DRGs were nearly always profitable whereas those covered by per diem plans were nearly always nonprofitable. Conclusions 1) Hospital information systems should be customized to deliver consolidated data for timely analysis of cost of care for individual patients. This information may be useful in negotiating profitable contracts. 2) A clinical pathway was successful in reducing the difference in cost of care between profitable and nonprofitable postcra-niotomy cases. 3) In today's health care environment both cost containment and revenue assume importance in determining profitability.
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Jabbar, M. A., A. Larbi i L. Reynolds. "Profitability of Alley Farming with and without Fallow in Southwest Nigeria". Experimental Agriculture 30, nr 3 (lipiec 1994): 319–27. http://dx.doi.org/10.1017/s001447970002442x.
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SUMMARYThe profitabilities of three land use systems in the humid zone of southwest Nigeria are compared using a capital budgeting procedure combining on-station and on-farm experimental data. The systems are: non-alley farming with fallow; alley farming with fallow; and continuous alley farming. The results indicate that: continuous alley cropping is more profitable than non-alley or alley cropping with fallow; short fallowing in alley cropping reduces the rate of mining soil fertility and thus helps preserve future productivity; alley farming with small ruminants enhances the profitability of alley systems and increases their advantage over the non-alley system; and alley systems remain profitable even when terminal clearing costs are internalized in the current project cycle.
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Allen, Jeff W., i Hiram C. Polk. "A Study of Added Costs of Laparoscopic Cholecystectomy Based on Surgery Preference Cards". American Surgeon 68, nr 5 (maj 2002): 474–76. http://dx.doi.org/10.1177/000313480206800516.
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Hospitals are pressured to cut expenses to generate a profit, but many current surgical procedures still fall below a “break-even” point. Laparoscopic cholecystectomy is a high-volume surgical procedure that can be profitable for hospitals if costs are reduced and complications minimized. Our limited liability corporation of independent surgical specialists examined the preference cards of ten surgeons who performed laparoscopic cholecystectomies in August 2000. We wished to determine whether these surgeons differed in their use of disposable equipment and devices for the same surgical procedure. All of the disposable equipment and devices studied were assigned a price by the hospital purchasing department that was representative of the hospital costs and not what was billed to the patient. The sum total of disposable instruments for a single operative case in which laparoscopic cholecystectomy was performed ranged from $92 to $637 (mean $333) depending on the preference of the surgeon. Our study points out the differences in expenses between surgeons. Maintaining this type of expense tracking can apply to other procedures and is a good place to start a surgeon-led and hospital-based cost-saving initiative.
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Solomin, Andrey I. "Researching the conditions for renewing of fishing fleet by prospective types of large-tonnage vessels". Izvestiya TINRO 181, nr 2 (30.06.2015): 273–78. http://dx.doi.org/10.26428/1606-9919-2015-181-273-278.
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Cost efficiency of projecting, shipbuilding and exploitation of new types of fishing vessels is analyzed for several existing fishery enterprises. Running costs per a catch day are calculated for certain vessels projects and leasing terms; the leasing procedure is described; the break-even points are evaluated. There is concluded that large enterprises or corporations with high volume of production are able to conduct profitable exploitation of large-tonnage vessels.
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Cabral, Lúcio M., Tereza C. dos Santos i Franco Alhaique. "Development of a Profitable Procedure for the Extraction of 2-H-1-Benzopyran-2- one (Coumarin) fromMikania glomerata". Drug Development and Industrial Pharmacy 27, nr 1 (styczeń 2001): 103–6. http://dx.doi.org/10.1081/ddc-100000134.
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Thornton, Mark. "Rothbard on the Economics of Slavery". Quarterly Journal of Austrian Economics 22, nr 4 (21.03.2020): 565–78. http://dx.doi.org/10.35297/qjae.010038.
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Murray Rothbard wrote an unpublished note in the early 1960s on the economics of antebellum slavery. Essentially, it was a criticism of the methodology of the New Economic History, or cliometrics, of which Conrad and Meyer (1958a) was the breakthrough application, on the topic of the profitability of slavery. Rothbard points out that their procedure in no way supports their conclusion that slavery was profitable or their ideological conclusion that the Civil War was necessary to end American slavery.
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Poryadina, Vera, Vladimir Burkov i Sergey Barkalov. "Competitive mechanisms of the functioning of social and economic systems". MATEC Web of Conferences 170 (2018): 01122. http://dx.doi.org/10.1051/matecconf/201817001122.
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To increase the efficiency of production in a planned economy, it is necessary to develop mechanisms of functioning that encourage enterprises to maximize the accounting of all reserves for increasing production efficiency. In this article, a model of a competitive mechanism for the functioning of active systems is developed. A feature of competitive mechanisms is that planning or incentive procedures include a competition procedure between active elements claiming to receive a profitable plan or any preferential terms of resource provision, financing and incentives. The authors conducted a study of the competitive mechanism on the example of the problem of resource allocation; It is proved that there is a Nash equilibrium for the competitive mechanism. The paper formulated and proved a theorem on the optimality of competitive mechanisms, which shows how effective the competitive mechanism for the distribution of limited resources.
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Page, JR, MN Hunter i W. Easdown. "The economic evaluation of crop research proposals". Australian Journal of Experimental Agriculture 31, nr 6 (1991): 825. http://dx.doi.org/10.1071/ea9910825.
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This paper describes a simple evaluative procedure that scientists can use to measure the relative profitability of crop research proposals. The procedure used a series of questions about the expected benefits and costs of projects. The resultant cash flow budgets were then subjected to a standard investment evaluation procedure called discounted cash flow analysis. The measures of profitability used were the net present value (NPV) and the internal rate of return (IRR). An evaluation of 17 project proposals for legume research in central Queensland gave IRR values ranging from negative to 147%. The NPV ranged from -$A189000 to +$14.5 million. This range of profitability is probably typical of research proposals for rural industries. It demonstrates the worth of evaluating proposals so that only the most profitable projects are funded. This procedure was easy to use and was well accepted by most scientists. The inclusion of economic evaluations, as described here, with applications for rural research funds is expected to strengthen the case for and improve the chances of funding.
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Gheysari, Hengameh, Fatemeh Mohandes, Mozhdeh Mazaheri, Banafsheh Dolatyar, Masoud Askari i Abdolreza Simchi. "Extraction of Hydroxyapatite Nanostructures from Marine Wastes for the Fabrication of Biopolymer-Based Porous Scaffolds". Marine Drugs 18, nr 1 (27.12.2019): 26. http://dx.doi.org/10.3390/md18010026.
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Three-dimensional porous nanocomposites consisting of gelatin-carboxymethylcellulose (CMC) cross-linked by carboxylic acids biopolymers and monophasic hydroxyapatite (HA) nanostructures were fabricated by lyophilization, for soft-bone-tissue engineering. The bioactive ceramic nanostructures were prepared by a novel wet-chemical and low-temperature procedure from marine wastes containing calcium carbonates. The effect of surface-active molecules, including sodium dodecyl sulfate (SDS) and hexadecyltrimethylammonium bromide (CTAB), on the morphology of HA nanostructures is shown. It is demonstrated that highly bioactive and monophasic HA nanorods with an aspect ratio > 10 can be synthesized in the presence of SDS. In vitro studies on the bioactive biopolymer composite scaffolds with varying pore sizes, from 100 to 300 μm, determine the capacity of the developed procedure to convert marine wastes to profitable composites for tissue engineering.
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Adewumi, S. O. i Mahmud, H. U. "ESTIMATION OF COSTS AND RETURN OF SWEET POTATO PRODUCTION IN OFFA LGA, KWARA STATE, NIGERIA". Journal of Agripreneurship and Sustainable Development 6, nr 1 (3.04.2023): 35–40. http://dx.doi.org/10.59331/jasd.v6i1.389.
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Offa is the second largest town in Kwara State, located in central Nigeria with geographic coordinates 8'9N 4'43E. With a population of about 120,100 inhabitants. Located in a savanna vegetation region, Offa is well known for cultivation of sweet potatoes and maize. Offa LGA was purposively selected as it is the major sweet potato producing areas in the State. A two-stage sampling procedure was used in random selection of 120 sweet potato farmers for the study. Data collected were analyzed using descriptive statistics and budgetary technique. The results showed that the estimated costs and return for one hectare of sweet potatoes enterprises were ₦64,100.00 and ₦121,700.00, respectively, with the labour cost having the highest share of 39.78% of total cost followed by seed cost (11.7%) and fertilizer cost (10.06%). The profit margin percentage of 47.3% and return per capital outlay of 0.9 was noted, impliedly that for every ₦1 invested in sweet potato production enterprise there is a return of ₦0.90k to the enterprise. An operating cash expenses ratio of 39.5% was obtained along with benefit cost ratio (BCR) of ₦1.89k implying that the enterprise is profitable even with little capital invested into it. A positive gross margin (₦73,600) and net farm income (₦57,600) was also obtained indicating a profitable sweet potato production enterprise. The study concluded that with the values of all the performance indicator used, sweet potato enterprise could be said to be profitable, and profitability can still be increased under improved management practices.
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Kanojia, Sunaina, i Neha Arora. "Investments, Market Timing and Portfolio Performance across Indian Bull and Bear Markets". Asia-Pacific Journal of Management Research and Innovation 13, nr 3-4 (wrzesień 2017): 98–109. http://dx.doi.org/10.1177/2319510x18776403.
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The returns generated from an investment alternative are exponentially higher when espoused with appropriate timings. This article expound on the market timing used by investors to formulate profitable investment strategies in the stock market, which requires gathering of information at both micro- and macro-levels along with market trends to make timely decisions and evaluating the universe of stocks available. The market trends are been broadly classified into bull and bear phases, which have dynamic influence on buying and selling in the stock market. Further, the study supports the retail investors’ participation in the market for long-term to generate higher returns as compared to other conventional alternatives. The study attempts to identify bull and bear market turning points using a formal turning point identification procedure and formulate a profitable investment strategy in bull or bear market phases to maximise the returns. Hence, the present study provides to understand how the two phases influence investment decisions and determine the implications of bull and bear market phases on investors’ investment strategy.
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Hamidu, K., Mohammed, I. i Danwanka, H. A. "PROFITABILITY ANALYSIS OF SACHET TABLE WATER PRODUCTION IN GOMBE CENTRAL SENATORIAL ZONE, GOMBE STATE, NIGERIA". Journal of Agripreneurship and Sustainable Development 4, nr 2 (1.06.2021): 110–16. http://dx.doi.org/10.59331/jasd.v4i2.213.
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The study examined the profitability analysis of sachet table water production in Gombe Central senatorial zone, Gombe State, Nigeria. Multi-stage sampling procedure was used. Gombe Central senatorial zone sachet table water production enterprises were purposively selected. In the study area, 45 production enterprises were selected. Data were analyzed using enterprise budget model to analyses the gross margin, profit, gross ratio, operating ratio, fixed ratio, ratio of gross margin to variable cost, ratio of gross margin to fixed cost and return per naira invested. Gross margin of N2,882,510,640, profit of N2,794,072,980, gross ratio of 0.0343, operating ratio of 0.0034, fixed ratio of 0.0305, ratio of gross margin to variable cost of 290.09, ratio of gross margin to fixed cost of 32.59 and return per capital invested of 29.40 was released. It was concluded that table water production in Gombe Central senatorial zone, Gombe State is profitable. The study recommended the citizens of Gombe central senatorial zone should engage in sachet table water production because it is a profitable venture.
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Zsótér, Brigitta, László Czagány i Anikó Szabóné Türkössy. "A mezőhegyesi ménesbirtok privatizációja és annak előzményei az éves beszámolók és üzleti tervek tükrében". Jelenkori Társadalmi és Gazdasági Folyamatok 4, nr 2 (1.01.2009): 45–49. http://dx.doi.org/10.14232/jtgf.2009.2.45-49.
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A Mezőhegyesi Ménesbirtok the adverse meteorological one - two exceptionally drought years - , and into an other economic crisis situation avoided often in the examined period because of relations, indebted, his liquidity was deteriorating. They saw the definitive solution in the privatization, which they accomplished in an one-turn procedure, on the road of an open application. A Ménesbirtok Rt. shares in 85,5% are property of Határhaszon Rt., 13% employee's share and 1,5% ordinary share of Ménesbirtok Rt. The company may have known profitable financial years behind himself since the privatization.
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Reddy, Sudheer, Lane Koenig, Berna Demiralp, Jennifer T. Nguyen i Qian Zhang. "Assessing the Utilization of Total Ankle Replacement in the United States". Foot & Ankle International 38, nr 6 (1.03.2017): 641–49. http://dx.doi.org/10.1177/1071100717695111.
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Background: Total ankle arthroplasty (TAR) has been shown to be a cost-effective procedure relative to conservative management and ankle arthrodesis. Although its use has grown considerably over the last 2 decades, it is less common than arthrodesis. The purpose of this investigation was to analyze the cost and utilization of TAR across hospitals. Methods: Our analytical sample consisted of Medicare claims data from 2011 and 2012 for Inpatient Prospective Payment System hospitals. Outcome variables of interest were the likelihood of a hospital performing TAR, the volume of TAR cases, TAR hospital costs, and hospital profit margins. Data from the 2010 Cost Report and Medicare inpatient claims were utilized to compute average margins for TAR cases and overall hospital margins. TAR cost was calculated based on the all payer cost-to-charge ratio for each hospital in the Cost Report. Nationwide Inpatient Sample data were used to generate descriptive statistics on all TAR patients across payers. Results: Medicare participants accounted for 47.5% of the overall population of TAR patients. Average implant cost was $13 034, accounting for approximately 70% of the total all-payer cost. Approximately, one-third of hospitals were profitable with respect to primary TAR. Profitable hospitals had lower total costs and higher payments leading to a difference in profit of approximately $11 000 from TAR surgeries between profitable and nonprofitable hospitals. No difference was noted with respect to length of stay or number of cases performed between profitable and nonprofitable hospitals. TAR surgeries were more likely to take place in large and major teaching hospitals. Among hospitals performing at least 1 TAR, the margin on TAR cases was positively associated with the total number of TARs performed by a hospital. Conclusion: There is an overall significant financial burden associated with performing TAR with many health systems failing to demonstrate profitability despite its increased utilization. While additional factors such as improved patient outcomes may be driving utilization of TAR, financial barriers may exist that can affect utilization of TAR across health systems. Level of Evidence: Level III, comparative study
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Capece, Pietrafesa, Siesto, Romaniello, Condelli i Romano. "Selected Indigenous Saccharomyces cerevisiae Strains as Profitable Strategy to Preserve Typical Traits of Primitivo Wine". Fermentation 5, nr 4 (26.09.2019): 87. http://dx.doi.org/10.3390/fermentation5040087.
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Wine production by inoculated fermentation with commercial Saccharomyces cerevisiae strains is an ordinary practice in modern winemaking in order to assure the final quality of wine, although this procedure results in the production of highly homogeneous wines. The use of indigenous selected starters represents a useful tool to control alcoholic grape must fermentation, safeguarding the typical sensory characteristics of wine produced from specific regions. In this study, we selected three indigenous S. cerevisiae strains among 16 indigenous strains previously isolated from the spontaneous fermentation of Primitivo grapes, which were collected from the vineyards of three different cellars. The three selected starters (one for each cellar) were tested during fermentations at pilot scale by performing in each cellar two trials: one with an indigenous starter (specific for the winery), and one with the commercial starter AWRI796 (common to all the cellars). Starter dominance ability and influence on aromatic quality of the wine were used as criteria to test the suitability of these indigenous starters to be used at the cellar scale. The results obtained in this study showed that the indigenous strains were characterized by very high dominance ability, and the aromatic quality of wine was strongly influenced both by the inoculated strain and the interaction strain/grape must.
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Sanusi, M. M., S. D. Idowu, D. Akerele i T. S. Olabode. "Economic analysis of palm oil processing in Odogbolu Local Government Area, Ogun State, Nigeria". Agro-Science 21, nr 2 (23.06.2022): 130–35. http://dx.doi.org/10.4314/as.v21i2.15.
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The study analyzed economic implication of palm oil processing in Odogbolu Local Government Area, Ogun State, Nigeria. A purposive sampling procedure was employed to select 90 respondents for the study with the aid of a questionnaire. Data generated were analyzed using descriptive statistics, budgetary technique and regression analyses. The majority (81.10%) of the palm oil processors were female, 51.10% had no formal education and most (78.90%) of the processors used the traditional method of processing. The costs and returns analysis indicates that palm oil processing is a profitable venture with an average gross margin of ₦158, 404.00 and net return of ₦125, 301.00 per processing cycle. The profitability index (0.32) revealed that for every one Naira invested in the enterprise, a profit of 32 kobo was obtained. Furthermore, the regression analysis showed that the factors affecting net returns obtained from palm oil processing were processing method (p < 0.10), processing experience (p < 0.01), marital status (p < 0.01), education (p < 0.01) and household size (p < 0.05). It was concluded that palm oil processing is a profitable enterprise in the study area. Thus, the study recommends that processors should be educated on improved/modern methods of processing.
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Suleiman, N. J., Mani, J. R., Hudu, M. I., Baba, D. i Yusuf, M. "COST-BENEFIT ANALYSIS OF TOMATO PRODUCTION AMONG SMALL-SCALE FARMERS IN KANO RIVER IRRIGATION PROJECT AREA OF KANO STATE, NIGERIA". Journal of Agripreneurship and Sustainable Development 2, nr 1 (1.06.2019): 39–46. http://dx.doi.org/10.59331/jasd.v2i1.48.
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This study was aimed on analysis of tomato production in Kano State of Nigeria, with specific objectives of finding the profitability of tomato production among small, medium and large scale farmers in the study area. A total of 60 tomato growers were sampled study area through application of stratified and random techniques in an appropriate statistical procedure. Well-structured questionnaires were used for the data collection. Farm budgeting and cost concept techniques as used in India were used to analyze the primary data. The study reveals an average Net Income generated for tomato production in the study area as N779,168/ha. A sample average Benefit Cost Ratio (BCR) for the different farm groups in the study areas was revealed as; 1:3.6. The study indicated that, tomato production and marketing is highly profitable in the study area. It can be concluded that tomato production is profitable at all small, medium and large scale of production in the study area. It was therefore, recommends that the farmers should continuously create efficiency of resource use, which is, avoiding wastages so as to sustainably make more margins in the study area.
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O. E., Mafimisebi, Akinbobola T. P. i Awoyomi T. E. "Comparative Analysis of the Profitability of Cassava Value Added products in Ondo State, Nigeria". International Journal of Research and Scientific Innovation X, nr IV (2023): 175–81. http://dx.doi.org/10.51244/ijrsi.2023.10421.
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Value addition in agriculture remains an icing on the cake, and a sustainable pathway to economic growth and investment. However, in the quest to add value to agricultural produce, profitability is a great criterion to the choice and preference of various value additions. This study compared the profitability of value-added cassava products in Ondo state, Southwest Nigeria. Multistage sampling procedure was used to select 110 respondents. Primary data were collected and analyzed using both descriptive and inferential statistic (Profitability/Budgetary analysis and ANOVA). The results revealed that cassava roasted granules, Fufu and cassava flour were the common cassava value addition. Results of the profitability analysis revealed that processing cassava to pupuru (GM = ₦11,520) and cassava flour (GM = ₦10,860) were the most profitable cassava value addition. Lack of adequate technologies (x̅ = 0.96) and poor extension services (x̅ =0.93) were the major constraint to cassava value addition. Also, there was no significant differences (F = 3.107, ρ≥0.05) in the profits from the value-added products across the communities. The study therefore concluded that value addition is profitable in cassava, hence concerted efforts should be made by stakeholders in encouraging and enhancing value addition policies for agricultural produce especially cassava.
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Gružienė, Aldona, Gintautas Vaitiekaitis, Aleksandras Vitkus, Raimundas Lekas, Tomas Kazakevičius, Algimantas Kirkutis, Algis Noreika, Darijus Skaudickas, Donatas Vasiliauskas i Greta Pečiulytė. "RADIOFREQUENCY CATHETER ABLATION FOR CARDIAC ARRHYTHMIAS IN LITHUANIA: THE INCIDENCE AND TRENDS". Sveikatos mokslai 24, nr 6 (20.05.2014): 113–18. http://dx.doi.org/10.5200/sm-hs.2014.124.
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Radiofrequency ablation (RFA) is minimally invasive treatment based on a thermal tissue destruction. Having reviewed the application of RFA method in a global context, we can state that it is widely used modern procedure in many economically developed countries. In many cases, RFA is qualified as effective, safe and economically profitable. There is a wide spectrum of clinical applications of RFA that cover diverse fields of medicine. RFA application in cardiology has become markedly significant. In 1976, RFA was introduced into clinical practice as an innovative management of cardiac arrhythmias. The developement of nonsurgical minimally invasive cardiac arrhythmias treatment by radiofrequency catheter ablation (RFCA) procedure is greatly associated with evolution of cardiac surgery in general and the establishment of cardiac centers. Era of Lithuanian cardiac surgery had begun in 1960‘s, when the first cardiac center in Lithuania was established. Currently, three cardiac centers are functioning in Lithuania. Arrhytmias treatment by RFCA was introduced into Lithuanian clinical practice in the mentioned cardiac centers where it is performed only there up to now. Regarding the incidence of performed RFCAs for the arrhythmias (total of 3942 RFCAs over the fiveyear period between 2007 and 2011), this treatment method can be defined as a routine procedure in the cardiac centers of Lithuania. There was showed an upward trend in the number of performed RFCA procedures for arrhythmias over the last quinquennium in Lithuania, as the performance has grown by 3.75% for five consecutive years from 2007 and 2011, suggesting that this treatment method may become more and more popular in the future clinical practice.
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Sammartano, Vincenzo, Lorena Liuzzo i Gabriele Freni. "Identification of Potential Locations for Run-of-River Hydropower Plants Using a GIS-Based Procedure". Energies 12, nr 18 (6.09.2019): 3446. http://dx.doi.org/10.3390/en12183446.
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The increasing demand for renewable and sustainable energy sources has encouraged the development of small run-of-river plants. Preliminary studies are required to assess the technical and economic feasibility of such plants. In this context, the identification of optimal potential run-of-river sites has become a key issue. In this paper, an approach that is based on GIS tools coupled with a hydrological model has been applied to detect potential locations for a run-of-river plant. A great number of locations has been analyzed to identify those that could assure the achievement of different thresholds of potential power. The environmental and economic feasibility for small hydropower projects in these locations has been assessed and a multi-objective analysis has been carried out to highlight the most profitable configurations. The Soil and Water Assessment Tool (SWAT) has been calibrated to simulate runoff in the Taw at Umberleigh catchment (South West England). The results showed that, in the area of study, different locations could be selected as suitable for run-of-river plants.
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Guney, Begum, i Michael Richter. "Games with switching costs and endogenous references". Theoretical Economics 17, nr 2 (2022): 617–50. http://dx.doi.org/10.3982/te4169.
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We introduce a game‐theoretic model with switching costs and endogenous references. An agent endogenizes his reference strategy, and then taking switching costs into account, he selects a strategy from which there is no profitable deviation. We axiomatically characterize this selection procedure in one‐player games. We then extend this procedure to multiplayer simultaneous games by defining a Switching Cost Nash Equilibrium (SNE) notion, and prove that (i) an SNE always exists; (ii) there are sets of SNE, which can never be a set of Nash equilibrium for any standard game; and (iii) SNE with a specific cost structure exactly characterizes the Nash equilibrium of nearby games, in contrast to Radner's (1980) ε‐equilibrium. Subsequently, we apply our SNE notion to a product differentiation model, and reach the opposite conclusion of Radner (1980): switching costs for firms may benefit consumers. Finally, we compare our model with others, especially Köszegi and Rabin's (2006) personal equilibrium.
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Kockar, Feray, i Rahsan Ilıkcı. "Investigations of Genetic Variation Between Olive (Olea europaea L.) Cultivars Using Arbitrarily Primed Polymerase Chain Reaction (AP-PCR)". Zeitschrift für Naturforschung C 58, nr 11-12 (1.12.2003): 837–42. http://dx.doi.org/10.1515/znc-2003-11-1217.
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Abstract Characterization and selection of olive clones for the production of olive oil is essential in Turkey because of its profitable exploitation. AP-PCR (Arbitrarily-Primed PCR) is a technique that can distinguish the genetic relationship among plant species and other organisms. In this study, AP-PCR approach was used in order to determine the genetic relationship of different six olive clones. The purity of DNA is one of the most important factors affecting the product of the AP-PCR method. In this respect, modified genomic DNA isolation procedure from Oleae europaea clones was developed so that this procedure can be used to obtain plant genomic DNA from diverse aromatic plants, which produce essential oils and secondary metabolites. By following the optimized AP-PCR amplification protocol, unique DNA fingerprint profiles for each olive clone were produced. AP-PCR-generated unique DNA fingerprint profiles can be used in the identification, distribution and diversity of various olive cultivars.
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AYANWALE, A. B., i A. S. BAMIRE. "COSTS AND RETURNS IN ALTERNATIVE POULTRY EGG PRODUCTION MANAGEMENT SYSTEMS IN TWO LOCAL GOVERNMENT AREAS OF OGUN STATE OF NIGERIA". Nigerian Journal of Animal Production 23, nr 2 (12.01.2021): 193–98. http://dx.doi.org/10.51791/njap.v23i2.2370.
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Costs and returns involved in the intensive and semi-intensive management systems of poultry egg production were examined in Ijebu-Ode and Odogbolu Local Government Areas of Ogun State in Nigeria with a view identifying the more profitable of the two systems. The free systems. Data obtained through structured questionnaires from the to feed and is suitable where there are no respondents who were selected through the simple random sampling procedure. Descriptive and Budgetary techniques were employed to analyse the data. Results from the analysis revealed that intensive poultry management systems are more profitable than semi-intensive as indicated by the Benefit-Cost ratio estimated at 2.2:1 and 2.0:1two systems respectively. Further analysis revealed that the majority (50%) of farmers under the Intensive system of management undertook egg production enterprise only against none under the semi-intensive management system. Egg production averaged 132 egg\ bird and 68 eggs/bird respectively for a semi-intensive system. It was concluded that poultry egg production under an intensive management system needs to be encouraged under the present economy in the country. This could be effected by providing the right economic policies aimed at reducing the cost of livestock feeds and day old chicks.
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Vukelic, Gordana, Dragan Radojkovic i Milica Petrovic. "Method for determination of relative relations between economical values and reproductive traits in production of piglets". Biotehnologija u stocarstvu 20, nr 3-4 (2004): 81–84. http://dx.doi.org/10.2298/bah0404081v.
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Bringing into correlation values that by their nature have no joint measuring unit is complex, but these values have decisive effect on production and demand from the researcher to compare them in methodologically correct way and express them through certain value. Determining the expression of values using same measuring units opens many doors of all kinds of analyses and enables their evaluation and possibility for their combination in regard to investigation and inclusion of potential parameters as achievable values. In business activity, different factors of incoming parameters as variables are present, and expected outgoing result should be, more exactly, better in quality and quantity (in the sense of full use of existing capacities or performing of service). At the same time, complete procedure of methodological processing should, first of all, be simple and, secondly easy applicable as well as economical, more exactly profitable. Whole procedure is presented through orientation procedure of the production control procedure and it is carried out or performed in an objective and easy way using registered elements and parameters reaching the economical efficiency of the piglet production. This is complex methodological effort considering the zoological characteristics of the production line, traits and presence of certain variables as parameters of this production. In this paper, procedure of evaluation of components is presented and explained systematically, taking in consideration specific zoological and technological traits, and they were calculated into valuable measuring expressions and units.
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Haksoro, Toto, Safira Firdaus Mujiyanti, Aulia Siti Aisjah i Totok Ruki Biyanto. "Plantwide Control: A New Design Procedure and Its Application at Liquefied Petroleum Gas Facility (LPGF) Plant". E3S Web of Conferences 190 (2020): 00039. http://dx.doi.org/10.1051/e3sconf/202019000039.
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Natural Gas is the cleanest source of fossil energy, resulting in lower carbon emissions from coal and oil. In gas processing, the process done to separate the product composition is the fractionation process. In the gas industry, facilities/parts that are specifically to perform the process are called liquefied petroleum gas Facility plant (LPGF). Process Control is the key to a safe and profitable process industry. The Plantwide control is a structural design and control strategy for the factory as a whole. The preferred control method on this final task is the PID for regulatory control as well as the decentralized supervisory control for supervisory control and the real time optimizer for its optimization. The new plantwide control procedure can increase the profit in the process liquefied petroleum gas facility plant up to USD 643 h–1 (3 %) and decreased energy use by USD 5 h–1 (5.16 %). The application of the Plantwide control on the liquefied petroleum gas facility is also able to produce a stable system response when the interruption of the feed flow rate changes. This is demonstrated by decreasing slurries time and maximum overshoot as well as eliminating steady-state errors.
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Jabnidze, N., B. Gechbaia, N. Phalavandishvili i E. Bakhtadze. "An enterprise with tourist status as a stimulant for attracting investments and tourists to Adjara". Fundamental and applied researches in practice of leading scientific schools 31, nr 1 (28.02.2019): 77–80. http://dx.doi.org/10.33531/farplss.2019.1.16.
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Tourism is one of the priority sectors of the Autonomous Republic of Adjara. The country has a significant legislative regulatory framework to promote the development of tourism in the country. The article deals with the Decree of the Government of Georgia, issued in 2015, on the procedure for granting the status of an enterprise to a tourist enterprise, as well as its operation and cancellation, the concessive initiatives of which are based on the Tax Code of Georgia. Objects with this status have become a profitable source of income and means of living for non-residents and for construction business - it is the easiest way to attract investments. Hotels apartments could find easily their niche in the consumer market.
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Alonso, Francisca, Fernando M. Chiamolera, Juan J. Hueso, Mónica González i Julián Cuevas. "Heat Unit Requirements of “Flame Seedless” Table Grape: A Tool to Predict Its Harvest Period in Protected Cultivation". Plants 10, nr 5 (30.04.2021): 904. http://dx.doi.org/10.3390/plants10050904.
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Greenhouse cultivation of table grapes is a challenge due to difficulties imposed by their perennial habit and chilling requirements. Despite difficulties, greenhouse cultivation allows ripening long before that in the open field. Nonetheless, for harvesting “Flame Seedless” in the most profitable periods, a cultural practices timetable has to be established. In this context, an estimation of development rate as a function of temperature becomes essential. This work puts forward a procedure to determine “Flame Seedless” threshold temperatures and heat requirements from bud break to ripening. “Flame Seedless” required an average of 1633 growing degree days (GDD) in the open field with a base temperature of 5 °C and an upper threshold temperature of 30 °C. Strikingly, only 1542 GDD were required within the greenhouse. This procedure forecast “Flame Seedless” ripening with an accuracy of three and six days in the open field and greenhouse, improving predictions based on the average number of days between bud break and ripening. The procedure to predict oncoming harvest date was found satisfactory, just four days earlier than the real date. If we used the typical meteorological year instead of the average year, then the prediction was greatly improved since harvest was forecast just one day before its occurrence.
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Porowski, Mieczysław, i Monika Jakubiak. "Energy-Optimal Structures of HVAC System for Cleanrooms as a Function of Key Constant Parameters and External Climate". Energies 15, nr 1 (3.01.2022): 313. http://dx.doi.org/10.3390/en15010313.
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This article presents approximating relations defining energy-optimal structures of the HVAC (Heating, Ventilation, Air Conditioning) system for cleanrooms as a function of key constant parameters and energy-optimal control algorithms for various options of heat recovery and external climates. The annual unit primary energy demand of the HVAC system for thermodynamic air treatment was adopted as the objective function. Research was performed for wide representative variability ranges of key constant parameters: cleanliness class—Cs (ISO5÷ISO8), unit cooling loads—q˙j (100 ÷ 500) W/m2 and percentage of outdoor air—αo (5 ÷ 100)%. HVAC systems are described with vectors x¯ with coordinates defined by constant parameters and decision variables, and the results are presented in the form of approximating functions illustrating zones of energy-optimal structures of the HVAC system x¯* = f (Cs, q˙j, αo). In the optimization procedure, the type of heat recovery as an element of optimal structures of the HVAC system and algorithms of energy-optimal control were defined based on an objective function and simulation models. It was proven that using heat recovery is profitable only for HVAC systems without recirculation and with internal recirculation (savings of 5 ÷ 66%, depending on the type of heat recovery and the climate), while it is not profitable (or generates losses) for HVAC systems with external recirculation or external and internal recirculation at the same time.
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Singla, Harish Kumar. "Does family ownership affect the profitability of construction and real estate firms? Evidence from India". Journal of Financial Management of Property and Construction 25, nr 1 (8.01.2020): 107–24. http://dx.doi.org/10.1108/jfmpc-08-2019-0067.
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Purpose The study aims to find if family-owned construction and real estate firms in India are more profitable compared to non-family-owned construction and real estate firms. The study also examines if family ownership and institutional ownership are drivers of the firm profitability. Design/methodology/approach The study uses data of 199 construction and real estate firms listed on the National Stock Exchange (NSE), India. The data pertains to a period of 13 years (2006-2018). The family firm is defined on the basis on ownership criteria, and the sample is divided into two groups, namely, family firms and non-family firms. The data is analyzed using a two-sample t-test assuming unequal variance and Prais–Winsten panel regression using correlated panels with corrected standard errors (PCSEs) procedure. Findings The findings suggest that family-owned construction and real estate firms are slightly more profitable compared to non-family-owned construction and real estate firms; however, family firms command lesser valuation in the market. The reason for this lower valuation is the mismatch between family holding and institutional holding. A family firm’s profitability is primarily driven by institutional holding that acts as mitigation against the agency conflict. Originality/value The paper is the first attempt to analyze the profitability of construction and real estate family firms, and compare it with non-family-owned construction and real estate firms.
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Kustarov, V. N., V. P. Lebedev i S. A. Sedneva. "Attempt of using the transcranial electrostymulation within premenstrual syndrome treatment". Journal of obstetrics and women's diseases 51, nr 1 (15.01.2002): 61–63. http://dx.doi.org/10.17816/jowd90014.
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It established, that the pathogenetical base of PMS clinical manifestations is В-endorphin and serotonin deficiency; with this occurrence symptom gravity increases as their levels decrease. In this connection transcranial stimulation (TES) use in optimal mode for endorphinergic and serotoninergic components of protection cerebral mechanisms activation elaborated in the Institute by I. P. Pavlov. Treatment results have manifested that TES is the high efficiency method of curing PMS without drugs. On the background of TES therapy women noted good spirits, disappearing menstrual pains, disappearing nausea and vomiting, menstrual cycle normalization. This procedure obvious influence on decreasing depression level was noted. The TES treatment is not companied by side effects and has the limited sphere of contra-indications, moreover this method is profitable economically and accessible.
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Mahajan, Akhil, i Tejpal Singh Chundawat. "Review on the Role of the Metal Catalysts in the Synthesis of Pharmacologically Important Quinoline Substrate". Mini-Reviews in Organic Chemistry 16, nr 7 (8.10.2019): 631–52. http://dx.doi.org/10.2174/1570193x15666181001142122.
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Quinoline stands out amongst the most essential N-based heterocyclic biologically active compounds. Friedlieb Ferdinand Runge was first to isolate quinoline from coal tar in 1834. Chemical component, quinine found in the bark of cinchona tree was used for treatment of malaria in the year of 1820. Quinoline derivatives have been found to exhibit different therapeutic activities such as antimalarial, antibacterial, antifungal, antiplatelet, anticancer, antitubercular, etc. There are a couple of promising compounds with the Quinoline skeleton like Pamaquine, Chloroquine, Tafenoquine, Bulaquine, Quinine and Mefloquine which show Antimalarial activity. All the methodologies in last decade had been covered to provide a comprehensive review on the development of Quinoline analogs using metal catalyst. Since quinoline and its auxiliaries have extensive pharmacological activities and are moreover utilized as ligands in various metal complexes, various procedures have been now and again reported for their synthesis. We have tried here undertaking to collect a huge part of the procedure that has been represented in the written work by use of metal driving force. This review will be especially profitable to the examiner in quick exploring and developing another ecopleasing, capable and judicious protocol.
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Kliszcz, Angelika, Andrzej Danel, Joanna Puła, Beata Barabasz-Krasny i Katarzyna Możdżeń. "Fleeting Beauty—The World of Plant Fragrances and Their Application". Molecules 26, nr 9 (23.04.2021): 2473. http://dx.doi.org/10.3390/molecules26092473.
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This article is devoted to some aspects of the fragrant substances of plant origin applied in the food industry and perfumery as well. Since antiquity many extractive techniques have been developed to obtain essential oils. Some of them are still applied, but new ones, like microwave or ultrasound-assisted extractions, are more and more popular and they save time and cost. Independently of the procedure, the resulting essential oils are the source of many so-called isolates. These can be applied as food additives, medicines, or can be used as starting materials for organic synthesis. Some substances exist in very small amounts in plant material so the extraction is not economically profitable but, after their chemical structures were established and synthetic procedures were developed, in some cases they are prepared on an industrial scale. The substances described below are only a small fraction of the 2000–3000 fragrant molecules used to make our life more enjoyable, either in food or perfumes. Additionally, a few examples of allelopathic fragrant compounds, present in their natural state, will be denoted and some of their biocidal features will be mentioned as an arising “green” knowledge in agriculture.
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Cerasa, Andrea. "Testing for Benford’s Law in very small samples: Simulation study and a new test proposal". PLOS ONE 17, nr 7 (22.07.2022): e0271969. http://dx.doi.org/10.1371/journal.pone.0271969.
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Benford’s Law defines a statistical distribution for the first and higher order digits in many datasets. Under very general condition, numbers are expected to naturally conform to the theorized digits pattern. On the other side, any deviation from the Benford distribution could identify an exogenous modification of the expected pattern, due to data manipulation or even fraud. Many statistical tests are available for assessing the Benford conformity of a sample. However, in some practical applications, the limited number of data to analyze may raise questions concerning their reliability. The first aim of this article is then to analyze and compare the behavior of Benford conformity testing procedures applied to very small samples through an extensive Monte Carlo experiment. Simulations will consider a thorough choice of compliance tests and a very heterogeneous selection of alternative distributions. Secondly, we will use the simulation results for defining a new testing procedure, based on the combination of three tests, that guarantees suitable levels of power in each alternative scenario. Finally, a practical application is provided, demonstrating how a sounding testing Benford compliance test for very small samples is important and profitable in anti-fraud investigations.
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Döbelin, Nicola. "Validation of XRD phase quantification using semi-synthetic data". Powder Diffraction 35, nr 4 (13.10.2020): 262–75. http://dx.doi.org/10.1017/s0885715620000573.
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Validating phase quantification procedures of powder X-ray diffraction (XRD) data for an implementation in an ISO/IEC 17025 accredited environment has been challenging due to a general lack of suitable certified reference materials. The preparation of highly pure and crystalline reference materials and mixtures thereof may exceed the costs for a profitable and justifiable implementation. This study presents a method for the validation of XRD phase quantifications based on semi-synthetic datasets that reduces the effort for a full method validation drastically. Datasets of nearly pure reference substances are stripped of impurity signals and rescaled to 100% crystallinity, thus eliminating the need for the preparation of ultra-pure and -crystalline materials. The processed datasets are then combined numerically while preserving all sample- and instrument-characteristic features of the peak profile, thereby creating multi-phase diffraction patterns of precisely known composition. The number of compositions and repetitions is only limited by computational power and storage capacity. These datasets can be used as input files for the phase quantification procedure, in which statistical validation parameters such as precision, accuracy, linearity, and limits of detection and quantification can be determined from a statistically sound number of datasets and compositions.
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Patel, Hiren, i Parth Modi. "Study and Extraction of Ammoniacal Nitrogen from Wastewater". International Journal for Research in Applied Science and Engineering Technology 11, nr 8 (31.08.2023): 1565–71. http://dx.doi.org/10.22214/ijraset.2023.54778.
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Abstract: In order to avoid environmental pollution, ammoniacal nitrogen must be removed from wastewater. This study contrasts the vacuum stripping system and di- electrophoresis as two ways for removing ammoniacal nitrogen from artificial effluent. The wastewater evaporating and ammoniacal nitrogen is separated from water using the vacuum stripping process. The di- electrophoresis system uses an electric field to separate charged compounds from the wastewater, including ammoniacal nitrogen. According to experimental results, both procedures are effective at removing ammoniacal nitrogen from wastewater, still the vacuum stripping approach has a better effectiveness than the di- electrophoresis procedure. the di- electrophoresis has the benefit of being a nonstop process with a less processing time. The vacuum stripping is more economically feasible for smallscale operations, whereas the di- electrophoresis process is more applicable for large- scale artificial operations, according to an profitable feasibility analysis that considered capital and functional costs. In conclusion, the choice of fashion for removing ammoniacal nitrogen from wastewater will depend on variables such the necessary effectiveness, recycling duration, and fiscal viability. The information from this study can be used to choose the proper method for removing ammoniacal nitrogen from wastewater.
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Terentiev, Oleksandr, Tatyana Prosiankina-Zharova, Volodymyr Savastiyanov, Valerii Lakhno i Vira Kolmakova. "The Features of Building a Portfolio of Trading Strategies Using the SAS OPTMODEL Procedure". Computation 9, nr 7 (6.07.2021): 77. http://dx.doi.org/10.3390/computation9070077.
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The article describes the original information technology of the algorithmic trading, designed to solve the problem of forming the optimal portfolio of trade strategies. The methodology of robust optimization, using the Ledoit–Wolf shrinkage method for obtaining stable estimates of the covariance matrix of algorithmic strategies, was used for the formation of a portfolio of trade strategies. The corresponding software was implemented by SAS OPTMODEL Procedure. The paper deals with a portfolio of trade strategies built for highly-profitable, but also highly risky financial tools—cryptocurrencies. Available bitcoin assets were divided into a corresponding proportion for each of the recommended portfolio strategies, and during the selected period (one calendar month) were used for this research. The portfolio of trade strategies is rebuilt at the end of the period (every month) based on the results of trade during the period, in accordance with the conditions of risk minimizing or income maximizing. Trading strategies work in parallel, being in a state of waiting for a relevant trading signal. Strategies can be changed by moving the parameters in accordance with the current state of the financial market, removed if ineffective, and replaced where necessary. The efficiency of using a robust decision-making method in the context of uncertainty regarding cryptocurrency trading was confirmed by the results of real trading for the Bitcoin/Dollar pair. Implementation of the offered information technology in electronic trading systems will allow risk reduction as a result of making incorrect decisions or delays in making decisions in a systemic trading.
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Galatia, Erina Prima, Siwi Gayatri i Agus Subhan Prasetyo. "PENGARUH KARAKTERISTIK PETANI TERHADAP PENGEMBANGAN USAHATANI BUNGA KRISAN (STUDI KASUS DI DESA KENTENG, KECAMATAN BANDUNGAN)". Jurnal Litbang Provinsi Jawa Tengah 21, nr 1 (4.08.2023): 35–46. http://dx.doi.org/10.36762/jurnaljateng.v21i1.997.
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Chrysanthemum farm has potential as a main source of income, especially when farmers start a profitable business by following the procedure of cultivation. This research aim was to analyze the effect of farmer characteristics including age, education, knowledge of the standard operating procedure of chrysanthemum cultivation, and farming experience to improve chrysanthemum farming. The research was held from February - March 2022 in Kenteng Village. The method of determining the sample was non-probability sampling or purposive sampling with 47 farmers as members of The Farmer Group. The data were collected by interview using a questionnaire and observation. The analytical method used descriptive analysis and multiple linear regression analysis. As a result, the average farmer’s age was 41 - 50 years old, 46,8% of the respondents had primary education, 55,3% of the respondents were in the moderate category of knowledge about chrysanthemum cultivation standard operational procedure, and 40,4% of the respondent’s experience were in The good category. 66,0% of the respondents were in the moderate category of the improvement cultivation of chrysanthemums. The result showed that the characteristics of farmers including age, education, knowledge, and experience had simultaneously influenced the improvement of chrysanthemum farms. There was an influence between age and knowledge toward improvement cultivation, however, there was no influence between education and farming experience for the improvement of chrysanthemum farms.
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Ukaegbu, Ben, i Isaiah Oino. "The determinants of capital structure". African Journal of Economic and Management Studies 5, nr 3 (26.08.2014): 341–68. http://dx.doi.org/10.1108/ajems-11-2012-0072.
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Purpose – The purpose of this paper is to investigate whether there are differences between the determinants of the capital structure in financial and manufacturing firms and also assess how the speed of adjustment differs. Design/methodology/approach – This study employed balanced panels data procedure using pooled ordinary least square, the random effects and fixed effects on manufacturing firms and banks that are listed on Nigeria Stock Exchange. The use of the three estimation method is in order to make a meaningful comparison between the models. Findings – The findings indicate that there are similarities and differences in the capital structure determinants on the two sets of firms: banks tend to be more leveraged when they are more profitable and manufacturing firms tend to be less leveraged when they are profitable. In addition, banks adjust their leverage faster at a speed of 69 per cent than manufacturing firms at 46 per cent. The study also shows that changes in the economy influence the capital structure of financial firms more than that of manufacturing firms. Research limitations/implications – The study only focused on one economy. Practical implications – As a result of 2008 global financial crisis, there has been intense debate on the significance of regulatory capital. The study demonstrate the need for regulatory capital in banks to be procyclical rather than being static. Originality/value – To the best of the knowledge, this is the first paper to empirically test how capital structure differ between banks and non-financial institutions.
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Al Rakib, Md Abdullah, Md Moklesur Rahman, Md Shamsul Alam Anik, Fayez Ahmed Jahangir Masud, Sanjib Islam, Md Ashiqur Rahman, Shantanu Chakraborty i Fysol Ibna Abbas. "Arduino Based Efficient Energy Storage Systems Using Solar and Wind Power". European Journal of Engineering and Technology Research 7, nr 2 (15.04.2022): 134–39. http://dx.doi.org/10.24018/ejeng.2022.7.2.2743.
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The aim of this work to investigate and create a solar-powered UPS for the Bangladeshi market as an alternative energy source. It comprises of a design that was created based on our study. Solar and wind UPS systems are made up of a solar charge controller with inverter circuit, and solar panel. Many circuit simulations were performed during this procedure to meet the work’s requirement. It also demonstrates that solar and wind-powered UPSs will be very effective and profitable in the electrical UPS industry. In this project, the solar panel is made up of solar cells that convert solar energy into electrical energy. We also have a charging circuit that charges a 12V DC (direct current) battery and an inverter circuit that converts the voltage to AC (alternative current).
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Kosiński, W. Konrad, Witold Kosiński i Kacper Kościeński. "Ordered Fuzzy Numbers Approach to an Investment Project Evaluation". Management and Production Engineering Review 4, nr 2 (1.06.2013): 50–62. http://dx.doi.org/10.2478/mper-2013-0015.
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Abstract Aim of the paper is to propose a new tool for a decision supporting system concerning the financial project evaluation. It is based on the determination of the internal rate of return (IRR) of a investment project in which all expenditure and anticipated incomes are vague, and described by Ordered Fuzzy Numbers (OFNs). It means that the probabilistic approach is neglected in this paper and the use of the well developed arithmetics of OFNs is made to find a positive fuzzy root of a fuzzy polynomial representing the fuzzy net present value of the project. Since in the space of OFNs a partial order relation is defined together with a number of defuzzification functionals, the authors can construct a decision support system for investors helping them in acceptance procedure of most profitable investment projects.
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DO, TIEN V., PATRICK WÜCHNER, TAMÁS BÉRCZES, JÁNOS SZTRIK i HERMANN DE MEER. "A NEW FINITE-SOURCE QUEUEING MODEL FOR MOBILE CELLULAR NETWORKS APPLYING SPECTRUM RENTING". Asia-Pacific Journal of Operational Research 31, nr 02 (kwiecień 2014): 1440004. http://dx.doi.org/10.1142/s0217595914400041.
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This paper proposes a retrial queueing model with the finite number of sources to evaluate the performance of spectrum renting in mobile cellular networks. The model incorporates necessary ingredients such as the finite number of subscribers, their impatience and a queue for the outbound service. To consider the specific feature of spectrum renting and the current mobile cellular technology, a variable number of servers that are switched on and off in groups is introduced. We present a novel way to take into account the renting fee, which can be used to fine-tune the operation of the spectrum renting procedure. Numerical results show that it is still profitable to initiate a spectrum renting request at high loads, even if no discount is offered by the frequency bands' owners.
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Chernyakova, I. S. "Peculiarities of improving the process of forming inter-branch relations in the meat subcomplex". Voprosy regionalnoj ekonomiki 31, nr 2 (20.06.2017): 61–66. http://dx.doi.org/10.21499/2078-4023-2017-31-2-61-66.
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The level of economic stability of meat processing enterprises is directly dependent on the degree of development and quality of inter-industry relations. However, there are a number of problems that impede the development of such relationships. First of all, this is the lack of coordination of actions in various parts of the meat subcomplex, that is, in the strategic interests of the functioning and development of agricultural enterprises, as a producer and supplier of raw materials, processing enterprises, as a producer of final products and service enterprises. These problems necessitate the development of a package of measures to improve the procedure for creating the most profitable for all participants in the process of inter-industry relations in the meat subcomplex based on theoretical generalizations, in accordance with the established patterns of interindustry proportions.
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Christian, Theofilus, Tabligh Permana, Stacia Andani Fortunata, Della Rahmawati, Irvan Setiadi Kartawiria i Maria Dewi Puspitasari Tirtaningtyas Gunawan Puteri. "Design Application And Its Economic Analysis Of Quick Tempe Technology In Pamulang". Prosiding Konferensi Nasional Pengabdian Kepada Masyarakat dan Corporate Social Responsibility (PKM-CSR) 2 (15.12.2019): 277–89. http://dx.doi.org/10.37695/pkmcsr.v2i0.473.
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Ipeh Tempe House in Pamulang was unable to fulfill their demand for more tempe production due to their limitation to expand the production using their own method. Quick tempe technology is a tempe production method with less production time than the common production method. Implementation of this method could increase production capacity without further infrastructure investment. Prior the implementation, the quick tempe technology was adjusted with the current production method in Ipeh Tempe House. Adjustment made was especially in the proper ratio of starter addition, the proper GDL addition method, and the maximum number of back slopping. The scheduling models of GDL tempe production method in Ipeh tempe house were designed to increase the production capacity of Ipeh tempe house, and the economic analysis was also performed to see whether the schedules suggested was feasible to do in real life, by calculating the profits generated by the schedules, and all of them were more profitable than normal method. To conclude, the procedure can create more batches, while giving more profit, but validation for the procedure and calculation is still needed to be done, other thing such as back slopping sensory test is also need to be done.
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Csikosova, Adriana, Katarina Culkova, Erik Weiss i Maria Janoskova. "Evaluation of Market with Accommodation Facilities Considering Risk Influence—Case Study Slovakia". Journal of Risk and Financial Management 14, nr 5 (5.05.2021): 208. http://dx.doi.org/10.3390/jrfm14050208.
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Tourism currently contributes significantly to the national economy. When investing in the accommodation facility on the real-estate market, the tourism sector also represents a certain risk due to a high level of seasonality. This paper investigates the risks related to prices, income and occupancy of accommodation facilities for selected regions in Slovakia. The value of accommodation facilities is estimated using discounted cash flow, probabilistic distribution of rental prices and occupancy of accommodation facilities in selected Slovak regions. The results provide information for potential and profitable investments in exposed regions in tourism. The information can be used in the field of risk management to avoid or reduce the risk of risk investments. Although the resulting values were calculated only for some selected regions, the proposed procedure can be used for any region and compared with the current values.
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Helder, Sebastião, Pedro Godinho i Sjur Westgaard. "Using Machine Learning to Profit on the Risk Premium of the Nordic Electricity Futures". Scientific Annals of Economics and Business 67, SI (2020): 1–17. http://dx.doi.org/10.47743/saeb-2020-0024.
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This study investigates the use of several trading strategies, based on Machine Learning methods, to profit on the risk premium of the Nordic electricity base-load week futures. The information set is only composed by financial data from January 02, 2006 to November 15, 2017. The results point out that the Support Vector Machine is the best method, but, most importantly, they highlight that all individual models are valuable, in the sense that their combination provides a robust trading procedure, generating an average profit of at least 26% per year, after considering trading costs and liquidity constraints. The results are robust to the different data partitions, and there is no evidence that the profitability of the trading strategies has decreased in recent years. We claim that this market allows for profitable speculation, namely by using combinations of non-linear signal extraction techniques.
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Teixeira, Ana Paula, Bruna Coutinho, Joana Cancela, Laura Cullen i Margarida Brito. "Valorisation of Kiwifruit Residues and their Application in an Anti-ageing Facial Cream". U.Porto Journal of Engineering 8, nr 5 (27.09.2022): 68–85. http://dx.doi.org/10.24840/2183-6493_008.005_0008.
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Portugal has a significant production of kiwifruit, from which around 73.8 tons of leaves and branches are generated every year. The composition of these residues shows interesting properties that could be incorporated into a value-added product. In order to create a new product, the steps proposed by the Chemical Product Design procedure were followed: identifying the needs, brainstorming ideas, selecting the best idea, proposing a manufacturing process. The chosen idea was an anti-ageing facial cream since the kiwifruit leaves and branches present interesting properties such as antioxidant, anti-inflammatory and anti-pigmentation effects. In order to obtain this product, a manufacturing plan was designed, and an economic analysis was performed. The proposed circular economy business was found to be profitable and environmentally friendly. This work also includes further innovative steps of the facial cream, such as pigmentation.