Search results for: choice situation
2787 DEM Simulation of the Formation of Seed Granules in Twin-Screw Granulation Process
Authors: Tony Bediako Arthur, Nejat Rahmanian, Nana Gyan Sekyi
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The possibility of producing seeded granules from fine and course powders is a major challenge as the control parameters that affect its producibility is still under investigation. The seeded granulation is a novel form of producing granules where the granule is made up of larger particles at the core, which are surrounded by fine particles. The possibility of managing granulation through course particle feed rate control makes seeded granulation in continuous granulation useful in terms of process control. Twin screw granulation is now a major process of choice for the wet continuous granulation process in the industry. It is, therefore, imperative to investigate the process control parameters that influence the formation of seeded granules in twin screw granulation. In this paper, the effect of the twin screws rotating speed on the production of seeded granules has been examined. Pictorial and quantitative analysis indicates a high number of seeded granules forming at low screw rotating speeds. It is also instructive to say that higher tensile stress occurs at the kneading section of the screws; thus, higher rotating speed courses the fines for breaking off from the seed particle.Keywords: DEM, twin-screw, Seeded granules, Simulation
Procedia PDF Downloads 862786 Zeolite-Enhanced Pyrolysis: Transforming Waste Plastics into Hydrogen
Authors: Said Sair, Hanane Ait Ousaleh, Ilyas Belghazi, Othmane Amadine
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Plastic waste has become a major environmental issue, driving the need for innovative solutions to convert it into valuable resources. This study explores the catalytic pyrolysis of plastic waste to produce hydrogen, using zeolite catalysts as a key component in the process. Various zeolites, including types X, A, and P, are synthesized and characterized through X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) surface area analysis, thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). These techniques are employed to assess the structural and chemical properties of the catalysts. Catalytic pyrolysis experiments are performed under different conditions, including variations in temperature, catalyst loading, and reaction time, to optimize hydrogen production. The results demonstrate that the choice of zeolite catalyst significantly impacts plastic waste conversion efficiency into hydrogen. This research contributes to advancing circular economy principles by providing an effective method for plastic waste management and clean energy production, promoting environmental sustainability.Keywords: hydrogen production, plastic waste, zeolite catalysts, catalytic pyrolysis, circular economy, sustainable energy
Procedia PDF Downloads 172785 Non-Chronological Approach in Crane Girder and Composite Steel Beam Installation: Case Study
Authors: Govindaraj Ramanathan
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The time delay and the structural stability are major issues in big size projects due to several factors. Improper planning and poor coordination lead to delay in construction, which sometimes result in reworking or rebuilding. This definitely increases the cost and time of project. This situation stresses the structural engineers to plan out of the limits of contemporary technology utilizing non-chronological approach with creative ideas. One of the strategies to solve this issue is through structural integrity solutions in a cost-effective way. We have faced several problems in a project worth 470 million USD, and one such issue is crane girder installation with composite steel beams. We have applied structural integrity approach with the proper and revised planning schedule to solve the problem efficiently with minimal expenses.Keywords: construction management, delay, non-chronological approach, composite beam, structural integrity
Procedia PDF Downloads 2352784 Functions of Bilingualism in Hong Kong: Comparing the Linguistic Landscape of Tsim Sha Tsui and Tai Wai
Authors: Xinyi Huang
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As a former British colony and one of the most famous world financial centers today, Hong Kong attracts countless businessmen and tourists to visit or settle down every year. Hong Kong is a land that leads western culture to blossom in Asia, and in the meantime, it inherits the unique charm of Chinese traditional culture. The Chinese-English bilingual phenomenon can be seen everywhere in Hong Kong. The public presentation, code choice, and practical use of these two languages can also reflect the economic and social status, population distribution, and individual identity construction of a specific area. This paper mainly compares the linguistic landscape of two areas with different social functions in Hong Kong: Tsim Sha Tsui, a large commercial center in Kowloon, and Tai Wai, a residential area in New Territories. By adopting the methodology of the Walking Tour, the bilingual data of 75 photos are collected unintentionally during the field trip in the two areas. Through the methods of quantitative analysis and linguistic landscape studies, this paper deeply analyzes the similarities and differences in language distribution and the respective social functions of two languages in the two places.Keywords: bilingualism, linguistic landscape, identity construction, commodification
Procedia PDF Downloads 1522783 Expression of Interferon-Lambda Receptor-(IFN-λRα) in Mononuclear Phagocyte Cells (MPCs) Is Influenced by the Levels of Newly Discovered Type III IFN-λ4 in Vitro
Authors: Hashaam Akhtar
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IFNλR1 and IL10R2 collectively construct a heterodimer, which is an acknowledged functional receptor for all type III interferons (IFNs). Expression of IFNλR1 is highly tissue specific, which can help in making type III IFNs a drug of choice as comparable to its analogue, type I IFNs, for treating hepatitis C in the near future. Although, expression of IFNλR1 also varies with the concentration of type I IFNs, but in this study it was shown that the expression of IFNλR1 varies with the protein titers of IFN-α, IFN-λ3 and the newly discovered IFN-λ4. High dosage of IFN-α reduces the expression of IFNλR1 in HepG2 cells, which can affect the antiviral activity of type III IFNs in vivo. We premeditated an experimental strategy to differentiate monocytes into dendritic cells (DCs), type I and type II macrophages in vitro and quantified the expression of the IFNλR1 by qPCR. The exposure of newly discovered IFN-λ4 to macrophages and DCs also raised the expression of its own receptor, which shows that expression of IFN-λ4 protein in hepatitis C patient may augment type I treatment and help ease off viral titers. The results of this study may contribute in some understanding towards the mechanisms involved in the selective expression of IFNLR1 and exceptionalities associated with the receptor.Keywords: IFNLR1, Interferon Lambda 4 (IFN-λ4), Mononuclear Phagocyte Cells (MPCs), expression
Procedia PDF Downloads 3832782 Black-Box-Optimization Approach for High Precision Multi-Axes Forward-Feed Design
Authors: Sebastian Kehne, Alexander Epple, Werner Herfs
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A new method for optimal selection of components for multi-axes forward-feed drive systems is proposed in which the choice of motors, gear boxes and ball screw drives is optimized. Essential is here the synchronization of electrical and mechanical frequency behavior of all axes because even advanced controls (like H∞-controls) can only control a small part of the mechanical modes – namely only those of observable and controllable states whose value can be derived from the positions of extern linear length measurement systems and/or rotary encoders on the motor or gear box shafts. Further problems are the unknown processing forces like cutting forces in machine tools during normal operation which make the estimation and control via an observer even more difficult. To start with, the open source Modelica Feed Drive Library which was developed at the Laboratory for Machine Tools, and Production Engineering (WZL) is extended from one axis design to the multi axes design. It is capable to simulate the mechanical, electrical and thermal behavior of permanent magnet synchronous machines with inverters, different gear boxes and ball screw drives in a mechanical system. To keep the calculation time down analytical equations are used for field and torque producing equivalent circuit, heat dissipation and mechanical torque at the shaft. As a first step, a small machine tool with a working area of 635 x 315 x 420 mm is taken apart, and the mechanical transfer behavior is measured with an impulse hammer and acceleration sensors. With the frequency transfer functions, a mechanical finite element model is built up which is reduced with substructure coupling to a mass-damper system which models the most important modes of the axes. The model is modelled with Modelica Feed Drive Library and validated by further relative measurements between machine table and spindle holder with a piezo actor and acceleration sensors. In a next step, the choice of possible components in motor catalogues is limited by derived analytical formulas which are based on well-known metrics to gain effective power and torque of the components. The simulation in Modelica is run with different permanent magnet synchronous motors, gear boxes and ball screw drives from different suppliers. To speed up the optimization different black-box optimization methods (Surrogate-based, gradient-based and evolutionary) are tested on the case. The objective that was chosen is to minimize the integral of the deviations if a step is given on the position controls of the different axes. Small values are good measures for a high dynamic axes. In each iteration (evaluation of one set of components) the control variables are adjusted automatically to have an overshoot less than 1%. It is obtained that the order of the components in optimization problem has a deep impact on the speed of the black-box optimization. An approach to do efficient black-box optimization for multi-axes design is presented in the last part. The authors would like to thank the German Research Foundation DFG for financial support of the project “Optimierung des mechatronischen Entwurfs von mehrachsigen Antriebssystemen (HE 5386/14-1 | 6954/4-1)” (English: Optimization of the Mechatronic Design of Multi-Axes Drive Systems).Keywords: ball screw drive design, discrete optimization, forward feed drives, gear box design, linear drives, machine tools, motor design, multi-axes design
Procedia PDF Downloads 2842781 Use of Multistage Transition Regression Models for Credit Card Income Prediction
Authors: Denys Osipenko, Jonathan Crook
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Because of the variety of the card holders’ behaviour types and income sources each consumer account can be transferred to a variety of states. Each consumer account can be inactive, transactor, revolver, delinquent, defaulted and requires an individual model for the income prediction. The estimation of transition probabilities between statuses at the account level helps to avoid the memorylessness of the Markov Chains approach. This paper investigates the transition probabilities estimation approaches to credit cards income prediction at the account level. The key question of empirical research is which approach gives more accurate results: multinomial logistic regression or multistage conditional logistic regression with binary target. Both models have shown moderate predictive power. Prediction accuracy for conditional logistic regression depends on the order of stages for the conditional binary logistic regression. On the other hand, multinomial logistic regression is easier for usage and gives integrate estimations for all states without priorities. Thus further investigations can be concentrated on alternative modeling approaches such as discrete choice models.Keywords: multinomial regression, conditional logistic regression, credit account state, transition probability
Procedia PDF Downloads 4842780 Bodybuilding, Gender and Age: A Qualitative Exploration of the Perspectives of Older Canadian Females
Authors: Amy Matharu
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Existing literature on older athletes in competitive sports is often male-dominated and limited. This study explores how age and gender impact the experiences of older female bodybuilders in Canada using the social theories of deviance and intersectionality. Qualitative, semi-structured interviews were conducted with 11 Canadian female bodybuilders over the age of 45. Interviews were transcribed, coded, and thematically analysed. This study was approached from a phenomenological perspective. The participants deviated from their perceived social norms of women their age. They exhibited deviance with their actions, such as prioritising themselves and following extreme dieting practices, and with their aesthetics, such as maintaining a muscular appearance. Participants received both positive and negative reactions from society resulting in both admiration and stigmatisation. These reactions varied based on the environment, audience, and context of the situation. Overall, the intersection of age and gender results in a unique position for older female bodybuilders within society and within the sport.Keywords: age, bodybuilding, gender, females
Procedia PDF Downloads 1252779 Examining the Acceptability of Destination Local Food by Domestic Tourist Visiting Northern Nigeria
Authors: Eldah Ephraim Buba, Jamila Mohammed Waziri
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There are challenges faced by tourist in respect of choosing food while in tourism destination. Food is very important in the choice of holiday of tourist. Many tourists choose a destination not only because of physical attraction but they choose destination where they will not encounter challenges in respect to food. The study is aimed at examining the acceptability of northern delicacies by tourists from other parts of Nigeria. Six delicacies were produced and presented to 50 tourists who are randomly picked from the south-east, south-west, south-south and the middle belt of Nigeria. The study found out that Danwake, Masa, and Kwadon zogale were generally accepted by majority of the respondents. Although, the respondents were not comfortable with the appearance of danwake, other aspect of the checklist was accepted. Tuwon shinkafa miyan taushe was accepted in terms of appearance but rejected in terms of taste and texture. ‘Yar Tsame and dindikolo were generally rejected. The study recommended that caterers, attraction owners and hoteliers should include such meals in their menu so that tourist will enjoy the gastronomy of the northern part of Nigeria.Keywords: acceptability, examination, food, tourism
Procedia PDF Downloads 3862778 Digital Transformation in Production Planning and Control: Evaluation of the Organizational Readiness
Authors: Tobias Wissing, Peter Burggräf, Johannes Wagner
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Cost pressure, competitiveness and the increasing turbulence of globalized saturated markets has been the driver for a variety of research activities in the field of production planning and control (PPC) during the past decades. For some time past an increasing awareness for innovative technologies in terms of Industry 4.0 can be noticed. Although there are many promising approaches a solely installation of those smart solutions will not maximize the PPC performance. To accelerate the successful digital transformation the cooperation between employee and technology also has to be adapted. The existing processes and organizational structures might be not sufficient to maximize the utilization of technological innovations. This paper presents the key results of an extensive study which was conducted by the Laboratory for Machine Tools and Production Engineering (WZL) of the RWTH Aachen University to evaluate the current situation and examine the organizational readiness for this digital transformation.Keywords: cyber-physical production system, digital transformation, industry 4.0, production planning and control
Procedia PDF Downloads 3522777 Reconsidering the Legitimacy of Capital Punishment in the Interpretation of the Human Right to Life in the Two Traditional Approaches
Authors: Yujie Zhang
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There are debates around the legitimacy of capital punishment, i.e., whether death could serve as a proper execution in our legal system or not. Different arguments have been raised. However, none of them seem able to provide a determined answer to the issue; this results in a lack of instruction in the legal practice. This article, therefore, devotes itself to the effort to find such an answer. It takes the perspective of rights, through interpreting the concept of right to life, which capital punishment appears to be in confliction with in the two traditional approaches, to reveal a possibly best account of the right and its conclusion on capital punishment. However, this effort is not a normative one which focuses on what ought to be. It means the article does not try to work out which argument we should choose and solve the hot debate on whether capital punishment should be allowed or not. It, again, does not propose which perspective we should take to approach this issue or generally which account of right must be better; rather, it is more a thought experiment. It attempts to raise a new perspective to approach the issue of the legitimacy of capital punishment. Both its perspective and conclusion therefore are tentative: what if we view this issue in a way we have never tried before, for example the different accounts of right to life? In this sense, the perspective could be defied, while the conclusion could be rejected. Other perspectives and conclusions are also possible. Notwithstanding, this tentative perspective and account of the right still could not be denied from serving as a potential approach, since it does have the ability to provide us with a determined attitude toward capital punishment that is hard to achieve through existing arguments.Keywords: capital punishment, right to life, theories of rights, the choice theory
Procedia PDF Downloads 1952776 Study of the Efficacy of Cysteine Protease Inhibitors Alone or Combined with Praziquantel as Chemotherapy for Mice Schistosomiasis mansoni
Authors: Alyaa Ahmed Farid, Aida Ismail, Ibrahim Rabia, Azza Fahmy, Azza El Amir
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This study was designed for assessment of 3 types of Cysteine protease inhibitors (CPIs) fluromethylketone (FMK), vinyl sulfone (VS) and sodium nitro prussid (SNP), to define which of them is the best? The experiments aimed to define the protective power of each inhibitor alone or combined with PZQ for curing S. mansoni infection in mice. In vitro, treated S. mansoni adult worms recorded a mortality rate after 1 hr of exposure to 500 ppm of FMK, VS and SNP as 75, 70 and 60%, while, treated cercaria recorded 75, 60 and 50%, respectively. FMK+PZQ treatment recorded the maximum reduction in worm burden (97.2% at 5 wk PI). VS treatment alone or combined with PZQ increases IgM, total IgG, IgG2 and IgG4 levels. In EM study of worm tegument, while only detachment of spines was observed in PZQ treated group, the completely implanted spines were reported in the degenerated tegument of adult worms in all groups treated with CPIs. Treatment with VS+PZQ increased Igs levels but, its effect was different on worm reduction. So, it is not enough to eliminate the infection and FMK+PZQ considered the antischistosomicidal drug of choice.Keywords: praziquantel, fluromethylketone, vinyl sulfone, worm burden, immunoglobulin pattern
Procedia PDF Downloads 3712775 Thematic Redesign of “Nah Al Balaghe” Riverside Park: Constructing the First Cultural Tourism Center in City of Tehran
Authors: Faraz Nikpour Arani, Shahin Haghi Navand
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After Two years of operation, the “Nahj Al Balaghe” riverside park, redesigning research was ordered by second region of Tehran municipality, the goal was to construct the first cultural tourism center in city of Tehran. After Pathological and analytical studies of existing situation, that made by field work research’s and interviews, the main problems was identified as lack of thematic design and some physical problems that reduced the activity and livability ratio of the park. The main approach of this project was thematic physical redesign and redefinition of activities in order to the “Nahj Al Balaghe’s” ideas, cultural days in “shamsi calendar”, the “7 artistic dimensions” and “four classical elements”. This paper is the abstraction of a full research that was done by writers.Keywords: thematic redesign, Nah Al Balaghe riverside park, cultural tourism center, Tehran
Procedia PDF Downloads 6342774 The Effectiveness of Homeschooling: A Stakeholder's Perception in East London Education District
Authors: N. M. Zukani, E. O. Adu
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Homeschooling has been a primary method for parents to educate their children. It has become a growing educational phenomenon across the globe. However, homeschooling is, therefore, an alternative form of education in which children are instructed at home rather than in mainstream schools. This study evaluated the effectiveness of homeschooling in East London Education District, looking at the stakeholder’s perceptions, reviewing issues that impact on this as reflected in literature. This is a qualitative study done in selected homeschools. Semi structured interviews were used as a form of collecting data. Data was scrutinized and grouped into themes. The study revealed the importance of differentiation of instruction, and the need for flexibility in the process of homeschooling for children who faced difficulties, special needs in learning in mainstream schooling. It is therefore concluded that the participants in the study clearly showed that homeschooling is an educational choice for parents who have concerns about the quality of education of their children. Furthermore, homeschooling has the potential to be the most learner centered, nurturing educational approach. It was recommended that an effective homeschooling practice mainly, the practice should consider attention to children-parent’s goals and learning structure. Although homeschooling looks at how to overcome the drawbacks of mainstream schooling, there are also cases that reflected, the incompetency of parents or tutors conducting the homeschooling and also a need for the support material and other educational supports from the government.Keywords: homeschooling, effectiveness, stakeholders, parents, perception
Procedia PDF Downloads 1372773 Improving Sales through Inventory Reduction: A Retail Chain Case Study
Authors: M. G. Mattos, J. E. Pécora Jr, T. A. Briso
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Today's challenging business environment, with unpredictable demand and volatility, requires a supply chain strategy that handles uncertainty and risks in the right way. Even though inventory models have been previously explored, this paper seeks to apply these concepts on a practical situation. This study involves the inventory replenishment problem, applying techniques that are mainly based on mathematical assumptions and modeling. The primary goal is to improve the retailer’s supply chain processes taking store differences when setting the various target stock levels. Through inventory review policy, picking piece implementation and minimum exposure definition, we were able not only to promote the inventory reduction as well as improve sales results. The inventory management theory from literature review was then tested on a single case study regarding a particular department in one of the largest Latam retail chains.Keywords: inventory, distribution, retail, risk, safety stock, sales, uncertainty
Procedia PDF Downloads 2662772 Sustainable Wood Stains Derived From Natural Dyes for Green Applications
Authors: Alexis Dorado, Aralyn Quintos
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This study explores the utilization of natural dyes for wood stains as a transformative agent for wood, encompassing color alteration, grain enhancement, and protection against harm. Commonly, wood stains are petroleum-based and synthetically derived. Notably, commercially accessible wood stains exhibit around 4% greater volatility than the formulated wood stain (FWS), potentially indicating a heightened environmental impact. The application of FWS does not significantly affect the performance of polyurethane varnish. The impact of incorporating an FWS when was applied to Gmelina arborea wood sample, the initial lightness value (L*) of 68.5, a* 7.7, b* 29.2 decreased to 44.36, a* 23.49, b* 32.60, where a* denotes the red/ green value, b* denotes the yellow/ blue, indicating a shift towards darker shades. This alteration in lightness suggests that the FWS contains compounds or pigments that effectively absorb or scatter light, resulting in a change in the perceived color and visual appearance of the wood surface. Moreover, the successful formulation of an eco-friendly natural wood stain is detailed, presenting a promising alternative. This method finds applicability in the domains of furniture and handicraft creation, offering a sustainable choice for creative artisans.Keywords: formulated wood stain (FWS), natural dyes, wood stains, eco-friendly natural wood stain,
Procedia PDF Downloads 952771 Policy of Tourism and Opportunities of Development of Wellness Industry in Georgia
Authors: G. Erkomaishvili, R. Gvelesiani, E. Kharaishvili, M. Chavleishvili
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The topic reviews the situation existing currently in Georgia in the field of tourism in conditions of globalization: Touristic resources, the paces of development of the tourism infrastructure, tourism policy, possibilities of development of the Wellness industry in Georgia that is the newest direction of the medical tourism. The factors impeding the development of the industry of tourism, namely-existence of the conflict zones, high rates of the bank credits, deficiencies associated with the tax laws, a level of infrastructural development, quality of services, deficit in the competitive staff, increase of prices in the peak seasons, insufficient promotion of the touristic opportunities of Georgia on the international markets are studied and analyzed. Besides, the levels of development of tourism in Georgia according to the World Economic Forum, aspects of cooperation with the European Union etc. are reviewed. As a result of these studies, a strategy of development of tourism and one of its directions-Wellness industries in Georgia is introduced with the relevant conclusions, on which basis the recommendations are provided.Keywords: about tourism, tourism policy, wellness industry, business, innovation, technology
Procedia PDF Downloads 5142770 Self-Serving or Self-Effacing: An Analysis of the Zimbabwe-United Kingdom Diaspora`S Role in Human Rights Advocacy
Authors: J.T. Chivanga
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This paper conceptualizes the significance of human rights activism by the Zimbabwean diaspora in the United Kingdom by analyzing how the diaspora advocates for the promotion of the rights of the people in Zimbabwe. It critiques the strategic essentialism theory that is used by the government of Zimbabwe as a basis to discredit the work of transnational advocacy groups. The research advances this position by articulating that the diaspora does not falsify nor simplify them to garner external support on the human rights situation in Zimbabwe. It establishes and shows the significance of transnational advocacy by articulating how the Zimbabwean diaspora addresses and brings to the attention of the international community human rights violations in Zimbabwe that would otherwise not have seen the light of day due to the absence of a conducive environment in that country that stifles the organization of protests under repressive laws such as the public order and security act of 2009.Keywords: strategic essentialism, transnational advocacy, public order and security act, Zimbabwe diaspora
Procedia PDF Downloads 2412769 Saudi Arabia's Perspective over Worldwide Governance Indicators
Authors: Sultan S. Alsajjan
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Understanding the public governance in Middle East's countries is one of the challenging matters for any researcher. The Middle East, for the last century, has been in fluctuated situations. Understating the public governance in Saudi Arabia is an extra challenge because Saudi Arabia has its unique culture and political system. The World Bank had launched 1996 Worldwide Governance Indicators. These indicators assist any country to rank its position in public governance how it is performing in this field. Saudi Arabia had ranked in some worldwide governance indicators at the bottom of indicators' list. For instance, according to the Worldwide Governance indicator (2018), Saudi Arabia had ranked in 192 out of 204 countries in 'Voice and Accountability Indicator'. In this paper, the reader will find in-depth analysis and evaluation of Saudi Arabia's positions in Worldwide Governance Indicators. Saudi Arabia had never considered the concept of public governance and worldwide governance indicators because of its economic situation, political characteristics, and social nature.Keywords: pubic governance, Middle East, Saudi Arabia, and worldwide governance indicators
Procedia PDF Downloads 2482768 On Boundary Values of Hardy Space Banach Space-Valued Functions
Authors: Irina Peterburgsky
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Let T be a unit circumference of a complex plane, E be a Banach space, E* and E** be its conjugate and second conjugate, respectively. In general, a Hardy space Hp(E), p ≥1, where functions act from the open unit disk to E, could contain a function for which even weak nontangential (angular) boundary value in the space E** does not exist at any point of the unit circumference T (C. Grossetete.) The situation is "better" when certain restrictions to the Banach space of values are applied (more or less resembling a classical case of scalar-valued functions depending on constrains, as shown by R. Ryan.) This paper shows that, nevertheless, in the case of a Banach space of a general type, the following positive statement is true: Proposition. For any function f(z) from Hp(E), p ≥ 1, there exists a function F(eiθ) on the unit circumference T to E** whose Poisson (in the Pettis sense) is integral regains the function f(z) on the open unit disk. Some characteristics of the function F(eiθ) are demonstrated.Keywords: hardy spaces, Banach space-valued function, boundary values, Pettis integral
Procedia PDF Downloads 2462767 Electric Field Analysis of XLPE, Cross-Linked Polyethylene Covered Aerial Line and Insulator Lashing
Authors: Jyh-Cherng Gu, Ming-Ta Yang, Dai-Ling Tsai
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Both sparse lashing and dense lashing are applied to secure overhead XLPE (cross-linked polyethylene) covered power lines on ceramic insulators or HDPE polymer insulators. The distribution of electric field in and among the lashing wires, the XLPE power lines and insulators in normal clean condition and when conducting materials such as salt, metal particles, dust, smoke or acidic smog are present is studied in this paper. The ANSYS Maxwell commercial software is used in this study for electric field analysis. Although the simulation analysis is performed assuming ideal conditions due to the constraints of the simulation software, the result may not be the same as in real situation but still be of sufficient practical values.Keywords: electric field intensity, insulator, XLPE covered aerial line, empty
Procedia PDF Downloads 2622766 Mindfulness and Motivational Based Intervention for Pregnant Women with Tobacco Dependency: Pilot Study
Authors: Ilona Krone
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Maternal smoking during pregnancy increases the risk of perinatal/postnatal negative health outcomes; however, only 1 in 5 pregnant smokers quit smoking. That is a clinical and public health problem. Pregnant smokers have negative paternal support, and higher levels of perceived stress than non-smokers and quitters return to smoking in a stressful situation. A crisis like the COVID-19 outbreak causes significant uncertainty and stress. For pregnant women, additional stress may increase due to concerns for their fetus. Strategies targeting maternal stress and isolation may be particularly useful to prevent negative outcomes for women and their fetuses. Within the post-doctoral study, cooperating with leading specialists, an innovative program for pregnant smokers will be developed. Feasibility for reducing craving, distress intolerance, Covid 19 related stress, and fear in pregnant women in Latvia will be assessed.Keywords: COVID 19, mindfulness, motivation, pregnancy, smoking cessation
Procedia PDF Downloads 2162765 Perception of Young Consumers about SMS Marketing in Pakistan
Authors: Raja Irfan Sabir, Nargis Dewan
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This study examines the role of SMS marketing on perception of young consumers and its impact on society by keeping in mind the culture, values and communication norms of Pakistan. The study focused on the consumer’s perception towards SMS Marketing of Entertainment, Informativeness, Credibility and Irritation factor which can have influence on the perception of young consumer positively or negatively. It’s also observed that some of the message contents do have good or bad impact on the society’s norm. The result derived from a sample of 200 consumers indicate that communication medium ‘SMS marketing’ positively influence the consumers perception but the messages that consumers receive from these companies are against the social norms and have bad impact. So Pakistani entrepreneurs of cellular industries should be more aware that there is need to somehow modify their message content strategies according to culture, norms and values of our society and environmental situation.Keywords: SMS marketing, messages content, consumers’ perception, cultural values and norms
Procedia PDF Downloads 3932764 Data-Driven Dynamic Overbooking Model for Tour Operators
Authors: Kannapha Amaruchkul
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We formulate a dynamic overbooking model for a tour operator, in which most reservations contain at least two people. The cancellation rate and the timing of the cancellation may depend on the group size. We propose two overbooking policies, namely economic- and service-based. In an economic-based policy, we want to minimize the expected oversold and underused cost, whereas, in a service-based policy, we ensure that the probability of an oversold situation does not exceed the pre-specified threshold. To illustrate the applicability of our approach, we use tour package data in 2016-2018 from a tour operator in Thailand to build a data-driven robust optimization model, and we tested the proposed overbooking policy in 2019. We also compare the data-driven approach to the conventional approach of fitting data into a probability distribution.Keywords: applied stochastic model, data-driven robust optimization, overbooking, revenue management, tour operator
Procedia PDF Downloads 1322763 Russian Law Enforcement Moonlighting Enterprise and Corruption after 2009 Police reform
Authors: Serguei Cheloukhine
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This study examines corrupting and moonlighting enterprise among Russian law enforcement (Police) since the 2009 Police Reform (hereto forward referred to as Reform). This research is based on the survey of about two dozen police officers in Russia’s regions. In addition, we analyzed statistics on crime, policing and socio-economic situation in Russian regions. Congruently, some data on the police officer’s off-duty activities was collected from the Internet sites. These Reforms sought to curb corruption at all levels of the Russian civil service and among uniformed law enforcement (Police) personnel. Many thought that the rebranding of the Militsiya as ‘Politsiya’ (Police) would have a transformational effect, both within the organization as well as how others perceived it. Ultimately, the rebranding effort failed; the only actual changes were the organization’s name and its personnel's uniforms. In fact, the Reforms seems to have contributed to even more corruption and abuse of power, as well an expansion of Law Enforcement’s ties to Corrupt Networks.Keywords: bribery, corruption, moonlighting, police reform, Russia
Procedia PDF Downloads 52762 Shipboard Power Plant Design as Senior Design Project
Authors: Hesham Shaalan
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Senior design projects teach students many important skills. One of the major goals is to prepare students to apply effective problem-solving techniques to a problem that represents a real-world situation. This includes the ability to define the problem, compare alternative solutions, identify the best solution, and design the system. This paper describes the design of a shipboard power plant as a senior project in the Marine Engineering program at the U.S. Merchant Marine Academy. The design project was supervised by faculty members who guided a multidisciplinary group of seniors. The research project was sponsored by the Office of Naval Research. Each group of seniors focused on one of the main design aspects of the project, including the electric power system, nuclear power plant, ship hull design, and economics.Keywords: senior design project, shipboard power system, engineering education, marine engineering
Procedia PDF Downloads 812761 The Effectiveness of Environmental Policy Instruments for Promoting Renewable Energy Consumption: Command-and-Control Policies versus Market-Based Policies
Authors: Mahmoud Hassan
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Understanding the impact of market- and non-market-based environmental policy instruments on renewable energy consumption (REC) is crucial for the design and choice of policy packages. This study aims to empirically investigate the effect of environmental policy stringency index (EPS) and its components on REC in 27 OECD countries over the period from 1990 to 2015, and then use the results to identify what the appropriate environmental policy mix should look like. By relying on the two-step system GMM estimator, we provide evidence that increasing environmental policy stringency as a whole promotes renewable energy consumption in these 27 developed economies. Moreover, policymakers are able, through the market- and non-market-based environmental policy instruments, to increase the use of renewable energy. However, not all of these instruments are effective for achieving this goal. The results indicate that R&D subsidies and trading schemes have a positive and significant impact on REC, while taxes, feed-in tariff and emission standards have not a significant effect. Furthermore, R&D subsidies are more effective than trading schemes for stimulating the use of clean energy. These findings proved to be robust across the three alternative panel techniques used.Keywords: environmental policy stringency, renewable energy consumption, two-step system-GMM estimation, linear dynamic panel data model
Procedia PDF Downloads 1792760 Knowledge Management in Practice: An Exploratory Study Applied to Consulting Firms
Authors: Evgeniya Ivanova
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Nowadays, in the literature, there is still no fixed definition of knowledge management that often remains only as an academic discipline. The current market situation is changing very quickly, the need of new technologies is high, and knowledge management is the area that ensures that the know-how has not been lost during market development and adoption. The study examines how knowledge management is being leveraged and practiced in the management consultancy companies and provides not only the tips and best practices of applied knowledge management approaches but also the validation matrix for its successful or unsuccessful implementation. Different knowledge management approaches are explored on the basis of their practical implementation, including related challenges, knowledge sharing process, and barriers that are typical for consulting firms mostly driven by the agile working culture. The relevance of proposed topic is confirmed by the finding that corporate working culture and the exponentially developing technologies have a direct impact on the success of practical implementation of knowledge management.Keywords: knowledge management, knowledge management in practice, consulting firm, knowledge management success
Procedia PDF Downloads 2002759 Mean-Field Type Modeling of Non-Local Congestion in Pedestrian Crowd Dynamics
Authors: Alexander Aurell
Abstract:
One of the latest trends in the modeling of human crowds is the mean-field game approach. In the mean-field game approach, the motion of a human crowd is described by a nonstandard stochastic optimal control problem. It is nonstandard since congestion is considered, introduced through a dependence in the performance functional on the distribution of the crowd. This study extends the class of mean-field pedestrian crowd models to allow for non-local congestion and arbitrary, but finitely, many interacting crowds. The new congestion feature grants pedestrians a 'personal space' where crowding is undesirable. The model is treated as a mean-field type game which is derived from a particle picture. This, in contrast to a mean-field game, better describes a situation where the crowd can be controlled by a central planner. The latter is suitable for decentralized situations. Solutions to the mean-field type game are characterized via a Pontryagin-type Maximum Principle.Keywords: congestion, crowd dynamics, interacting populations, mean-field approximation, optimal control
Procedia PDF Downloads 4432758 Analysis of Marketing: Frozen Fruit and Vegetables Sector in Turkey
Authors: Pınar Aydın, Şule Turhan
Abstract:
Today, with the change of people's consumption habits, the importance of frozen fruit and vegetable sector has been increased. In Turkey, sector is based on export. It is growing very fast and external demand is constantly increasing. About 80% of frozen fruits and vegetables produced in Turkey are being exported. More than 90% of the exports go to European Union countries. About 49% of frozen fruits and vegetables in Turkey is being exported to Germany, England and France. In the sector which the abroad demand is continuously increasing, although it has been estimated that around 25% of the average annual growth rate, the domestic consumption is very low. Although the frozen food consumption per person in Turkey is about %2 of United States, the growing rate of the sector is higher than the United States and Europe. This situation reflects that it is such a sector that has a growing demand in both domestic and foreign markets.Keywords: frozen food, fruit and vegetable sector, exports, Turkey
Procedia PDF Downloads 332