Minimum Expense Research Articles

Nickelo-Sulfurization of DNA Leads to an Efficient Alkaline Water Oxidation Electrocatalyst with Low Ni Quantity

Nonprecious metals based electrocatalysts are highly anticipated in electrocatalytic water splitting as the increasing energy demand can be handled by large scale H2 production with minimum expenses. Herein, a facile and faster nickelo-sulfurization of DNA in ambient conditions has been developed that resulted in NiS anchored wirelike assemblies of DNA. The effect of DNA concentration on material stability and electrocatalytic activity was studied, and it was found that, with DNA to Ni2+ ratios of 0.048 and 0.072 M, the NiS anchored DNA colloidal solutions were stable. In addition, it was found that NiS(0.048) with a relatively lower DNA concentration showed better oxygen evolution reaction (OER) activity than NiS(0.072). Overpotentials of 352 and 401 mV were required by NiS(0.048) and NiS(0.072) to deliver a current density of 10 mA cm–2 even with an ultralow quantity of NiS(0.0123 mg cm–2) in both. The same trend was reflected in the Tafel slopes of NiS(0.048) and NiS(0.072) which showed 58.6 and 112.4 ...

Automation of optimization of discrete technological processes

The article describes the procedure automation of optimization discrete technological processes with using of Bellman’s functional (recurrent) equation and system Mathcad. As rule the technological processes includes n of operations and each operation can be executed by various types of equipment. Expenses (cost, time, …) on execution of i operation by k equipment after execution by j equipment (i-1) operation are known - c (i, j, k). Expenses for execution by k equipment i operation can depend on the equipment - j, which executed previous (i-1) operation. It is necessary to execute automation of optimization technological process with the minimum expenses. The algorithm of the decision of a problem by Bellman’s method includes two phases. The first phase is calculations of the minimum expenses for execution of all partial technological processes, from last operation of process to the first. The second phase is definition of the required optimum set of equipment which is carrying out all technological process with the minimum expenses. The proposed procedure of automation of optimization technological process using Bellman’s method and system Mathcad significantly decreases time and labour costs on execution of such calculations and efficiently to execute investigations related with change of equipment parameters.

A Fuzzy Goal Programming Model For Production Planning in Furniture Company

In the industrial world, there is always a problem of supply chain and always be for a long time. Production planning is one of its stages. Almost all of companies want to make production process efficient and optimized with minimum expenses while still meet with the market demand. This paper present production planning problem in furniture company with different operational constraint, including production time, warehouse capacity, and quantity of raw materials. The fuzzy goal programming applied to maximize the profit, minimize the production cost and minimize raw materials cost. In this paper was conducted at the furniture company CV. Arte Jaya which aims to help company for decision making regarding to production planning model by using fuzzy goal programming. This Method is suitable for CV. Arte Jaya because the objective function can be adapted to preferences of the company. The result obtained application program for solving decision making problem about the amount of production that is exact and still meet with the market demand. The application program that has been created is able to simplify the user’s performance of CV. Arte Jaya.

A Survey on Various Security Issues and Challenges to Secure Cloud Computing

Cloud computing has evolved as one of the most powerful approach in the IT industry. It provides so many advantages like minimum expense, great performance, availability of resources, due to which it is considered as revolution amongst organizations. In cloud computing various resources are shared through network in open environment so that the user can access the information from anywhere, but there exist the issues of security and privacy of user and its information. It also provides a broad study on the issues and challenges of security .Growth of cloud computing is mainly decreased due to these concerns and challenges. Even though there is secure Homomorphic encryption there lays certain security issues and attacks with it. This paper deals with the analysis of security issues on cloud computing and finding counter measures on those issues. The fundamental security issues such as confidentiality, integrity, availability, trust and audit and compliance is analyzed and the impact on each characteristics of cloud computing as well as the third party control has been examined.

QUANTITATIVE CALCULATION OF THE QUALITY OF TEACHING AS A PROJECT MANAGEMENT FACTOR OF THE INTERNATIONAL CONTRACT

One of the most problematic places in the implementation of international contracts is inefficient project management. The choice of inappropriate methodology for managing the educational project, irrational allocation of resources, untimely monitoring quality of the provided services can lead not only to the loss of an existing contract, but also to the reduction of the university's reputation in the international arena in conditions of competitive struggle in the educational services market. In turn, this minimizes the probability of concluding of new contracts. An innovative methodology for managing projects for the provision of educational services to a foreign customer has been developed. A general calculation of the quantitative assessment of a quality of the provision of an educational service is applied in this methodology. In order to significantly reduce the calculation time was created a universal computational program that allows processing of large data blocks with visualization of results in a two-dimensional coordinate system. The methodology was implemented in the NUOS workflow. The obtained results make possible to control the quality of rendering educational services to a foreign customer with minimum expenses of human resources and make adjustments to the educational process quickly if it necessary.

Method of multiagent web-oriented environment synthesis based on information satellites

Purpose . Creation of a favorable web-oriented environment through the production of satellite agents in the form of doorways, which makes it possible to increase the information content of the object of production of a virtual instrument-making enterprise. Results. In the article the method of increasing the informative value of the Virtual Instrument Making Enterprise products using information satellites is considered, based on the synthesis of a multi-agent web-based environment through the production of satellite agents in the form of doorways. A detailed step-by-step algorithm for creating such information satellites in the form of doorway sites, with a basic emphasis on informativeness, is disclosed. The main problem related to the loss of production potential, as well as its solution using the proposed method, is presented. Conclusions. The method allows not only to adapt equipment to the market by means of its timely modernization, but also allows to provide market conditions, competitiveness of products and their sale with minimum expenses of monetary resources, which determines the demand for production and forms a portfolio of orders.

Assessment of material and technical resources of crop production technologies

The author explains the general principles of influence of the material and technical resources (MTR) on performance and efficiency of the main technological operations in crop production. Various technologies from the point of view of MTR expenses were estimated. The general tendencies in development of crop production technologies were revealed. The distribution of costs of materials and equipment to perform a variety of agricultural activities was determined. Cost indicators should be a guide in the search of innovative technological processes and working elements of agricultural machins. The greatest values of expenses of work, fuel, metal, and also, money where found. The concepts allowing to provide costs production reduction were formulated. To achieve the maximum productivity with the minimum expenses, the perspective calculations shoul be based on «progressive» agrotechnologies. When determining progressive agrotechnology it is necessary on reasonable grounds to approach indicators of crop productivity in various agrozones and regions of the country. For an assessment of efficiency of MTR by crop production and ensuring decrease in resource intensity of agricultural products by search and use of essentially new technologies for energy saving when performing agricultural operations, an integrated percentage indicator of comparison of progressive technologies with the applied ones was developed. MTR at application of new progressive crop production technologies by integrated percentage index were estimated. This indicator can be used for definition of efficiency of MTR. Application of the offered technique will promote an effective assessment of MTR, decrease in resource intensity by search and developments of essentially new technologies of performance of operations in crop production.

Automatic Calculation Techniques for Soil Digging Force Applied by Bucket Swing

The article describes the procedure of automatic calculation techniques for soil digging force applied by a bucket swing using Mathcad software. There are also foundations of calculation of soil digging force applied by a bucket swing depending on swing angle provided. The digging force is one of important parameters of a single-bucket excavator attachment and depends on the dimensions of the components of working attachment, their angles of swing and C is a number of blows by dynamic densimeter (DorNII rammer); s is a thickness of side plate (cm); α is a digging angle (degree); β0 is a side plate tapering factor; μ is a soil excavation technique factor. μ = 1 (for locking excavation) and others parameters of soil.In a digging operation using a bucket swing relative to joint Ok its teeth travel along a circle arc, and the bucket rotates by the angle φ determined by the equation of volume of displaced part of drag prism having bk high and characterized by a segment-shaped cross-section and the volume of soil in the filled bucket. The bucket-filling angle is determined by the successive approximations method.The developed procedure makes such calculation and various investigations possible given with minimum expenses and maximum visualization.

A Study of Perception and Capability to Undertake Action Research Among Lecturers at a Polytechnic in Sarawak

This study aims to survey the perception and capability of lecturers in a polytechnic in Sarawak to undertake action research. It is conducted among 39 lecturers from the General Studies Department. The findings of this study show that the lecturers perceived that doing action research involved a lot of time, it can be done at minimum expense and action research can build trustworthiness or reliability. Besides, doing action research requires an effort and guidance is needed in doing action research, especially for novice lecturer-researchers. In terms of capability, most lecturers can distinguish the different parts of action research and able to cite authors appropriately. However, some lecturers are not familiar with the MLS and APA formats. It was also found that most lecturers conducted action research for their professional growth. The study recommended several implications for institutional administrators to enhance polytechnic lecturers’ abilities in conducting action research.

ОСНОВНЫЕ ПРОБЛЕМЫ И ПЕРСПЕКТИВЫ РАЗВИТИЯ МАЛЫХ ИННОВАЦИОННЫХ ПРЕДПРИЯТИЙ В БРЯНСКОЙ ОБЛАСТИ

Innovative activity can be defined as a scientific and technical progress direction, and as the process connected with introducing the results of research and development in production. Russian economy devel-opment is based on the use of intellectual resource pro-viding maximum efficiency of production at the mini-mum level of material inputs. The small commercial enterprises carrying out active innovative activity al-lowing them to create new products and technologies with the minimum expenses play a key role. Recently the importance of innovations increases in the world. The state plays a crucial role in innovative activity development in Russia developing and realizing actions for the support of innovatively active enterprises. In the international practice, small business in market economy is the leading sector of economy, defining rates of its economic growth, structure and quality of GNP (gross national product). Experience of many small innovative enterprises functioning at higher education institutions has shown that their development will be successful only in case of coincidence of national objectives with interests of higher education institution, the management of the enterprise and its employees. Small innovative enterprises requires state support which is carried out in such forms as: creation of investment institutes; holding competitions of innovative projects and works leading to the development of innovative activity of the educational and research organizations, and business in general.

Технология и установка опреснения воды с применением ветроэнергетического агрегата

The innovative project of application of wind driven generators in units for sea and brackish waters desalination by reversed osmosis method with thermal utilization of salt concentrates and pulse ultra-violet disinfecting has been presented. This project implementation will provide with fresh water residential and industrial facilities, as well as farms in the areas located near the sea coast or having sources of underground brackish waters. This unit development aimed to obtaining fresh water with minimum expense of the salt concentrate in the form of sewage, and in some cases with its complete exception. The technical characteristic of autonomous unit for sea water desalination with performance on desalinated water equal to 50 m3 per day has been presented. Distinctive feature of the autonomous desalination unit is development of a module for pulse ultra-violet disinfecting of water by impact on it with high-intensity pulse ultra-violet wide range radiation and construction of an energy storage device based on a super condensers block which allowed the autonomous wind driven generator to use the energy concluded in wind fluctuations.

Pobreza subjetiva y reconocimiento étnico en Colombia: análisis para principales regiones, año 2013

En este artículo se contrasta empíricamente la hipótesis que, en Colombia, la raza tiene un efecto significativo en la percepción de pobreza de los propios individuos y condiciona la manera como éstos perciben los diferentes aspectos de bienestar. Se emplea la Encuesta Nacional de Calidad de Vida (ECV) realizada en Colombia para el año 2013. La estimación de un modelo logit multinomial revela que el ser afrocolombiano aumenta la probabilidad de percibir que el ingreso promedio del hogar no es suficiente para cubrir sus gastos mínimos y aleja la probabilidad de percibir que éstos sean, al menos, suficientes.

Recent advancements in resource allocation techniques for cloud computing environment: a systematic review

There are two actors in cloud computing environment cloud providers and cloud users. On one hand cloud providers hold enormous computing resources in the cloud large data centers that rent the resources out to the cloud users on a pay-per-use basis to maximize the profit by achieving high resource utilization. On the other hand cloud users who have applications with loads variation and lease the resources from the providers they run their applications within minimum expenses. One of the most critical issues of cloud computing is resource management in infrastructure as a service (IaaS). Resource management related problems include resource allocation, resource adaptation, resource brokering, resource discovery, resource mapping, resource modeling, resource provisioning and resource scheduling. In this review we investigated resource allocation schemes and algorithms used by different researchers and categorized these approaches according to the problems addressed schemes and the parameters used in evaluating different approaches. Based on different studies considered, it is observed that different schemes did not consider some important parameters and enhancement is required to improve the performance of the existing schemes. This review contributes to the existing body of research and will help the researchers to gain more insight into resource allocation techniques for IaaS in cloud computing in the future.

OPTIMISATION OF THE MANNING TABLE IN A MARINE COMPANY

The optimum plan-schedule of appointments with seamen related to work in the Sea Company within six months is offered, taking into account the minimum expenses. The mathematical model of a problem is composed and realized in MS Excel, in the «Solver Parameters» dialogue window.

Aspects concerning verification methods and rigidity increment of complex technological systems

Any technological process and technology aims a quality and precise product, something almost impossible without high rigidity machine tools, equipment and components. Therefore, from the design phase, it is very important to create structures and machines with high stiffness characteristics. At the same time, increasing the stiffness should not raise the material costs. Searching this midpoint between high rigidity and minimum expenses leads to investigations and checks in structural components through various methods and techniques and sometimes quite advanced methods. In order to highlight some aspects concerning the significance of the mechanical equipment rigidity, the finite element method and an analytical method based on the use Mathcad software were used, by taking into consideration a subassembly of a grinding machine. Graphical representations were elaborated, offering a more complete image about the stresses and deformations able to affect the considered mechanical subassembly.

Программа расчета структуры малокомпонентных кормов для аквакультуры и животноводства

В приложении Excel обрабатывается большое количество данных в табличной форме, моделируются технологические процессы с выражением устойчивых взаимосвязей в математически грамотных зависимостях. Объединение нескольких зависимостей в пределах одной изучаемой проблемы позволило разработать целый алгоритм расчетов. Процессы составления программы расчета малокомпонентных кормов описаны автором впервые и получили новую интерпретацию при детальном рассмотрении. Разработаны малокомпонентные комбикорма на базе правила креста, далее самостоятельно разработанный автором алгоритм представлен в законченном виде и используется в производстве. В табличной форме рассчитана структура корма с использованием значений стоимости каждого компонента для обеспечения учета их в себестоимости одной единицы корма. Учет в приложении Excel заложенных соотношений в последовательном изложении при постоянном изменении структуры смешиваемых веществ проведен на том основании, что в каждом случае после первого смешивания за второе вещество может быть взято уже полученное. Все действия может проводить оператор, имеющий среднее образование, с минимальными навыками работы в приложении Excel. Самое главное — точно вводить новые значения при разработке нового комбикорма и дополнять по необходимости строки в расчетных таблицах. Грамотный переход от одной ко второй таблице программы позволяет рассчитывать структуру корма по всем имеющимся данным. При работе с электронным вариантом в приложении Excel требуются минимальные затраты времени для разработки новой рецептуры корма при наличии всех данных по содержанию питательных веществ, макро- и микроэлементов, витаминов в исходных компонентах и других сведений, а также их закупочной стоимости.

D-S Evidence Theory Based Trust Detection Scheme in Wireless Sensor Networks

Wireless sensor networks (WSNs) is a key technology which is deployed under the assumption that participating sensors are cooperative in forwarding each other's packets. However, some nodes may behave selfishly by dropping other's packets or refusing to provide services in an attempt to maximize its throughput with minimum expense. In this paper, the authors present a novel detection scheme based on Dempster-Shafer (D-S) evidence theory in WSN to detect and isolate misbehavior sensors. However, when the scheme is operated, counter-intuitive results may appear. To overcome this problem, this paper improves the original D-S evidence theory, which defines a new variable to modify the collected evidence before combination and then combines these evidences according to Dempster combination rule. Simulation results show that this scheme can detect and isolate misbehavior sensors effectively and accurately, suppress nodes collusion and improve network performance. Compared with other existing detection scheme, this scheme has more security, robustness and accuracy.

Maximum principle for problem of circuit optimisation

The solution of a problem of circuit optimisation for minimum possible CPU time is obtained on the basis of the maximum principle of Pontryagin. It is shown that the effect of acceleration of the optimisation process that was studied earlier coincides with the solution obtained on the basis of the maximum principle. This is a theoretical justification of the effect of acceleration. On the other hand, the maximum principle can be a basis for development of optimisation algorithm for electronic circuits with the minimum expenses of CPU time.

Влияние высоты подачи пены на оптимальную интенсивность подачи и минимальный удельный расход раствора пенообразователя

Влияние высоты подачи пены на оптимальную интенсивность подачи и минимальный удельный расход раствора пенообразователя

An ultrafast electric vehicle charging station as an object of decentralized power engineering

In developing technologies of ultrafast (within 5 min) electric vehicle charging, problems occur related to the power supply. The charging station, an analog of a refueling station, should have an extremely irregular load with a high peak power. It might be located far from the possible point of connection to the power grid and should represent an object of decentralized power generation by means of an electrical energy storage system. We consider and compare an autonomous gas-turbine facility and a lead-acid battery as the possible power supply. We found an averaged statistically optimal relation between the gas turbine power (or the contracted power) and the battery capacity providing for minimum expenses, reduced to the service life, for creation and exploitation of the station of ultrafast charging of a given number of electric vehicles per day.