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Peripherally and non-peripherally carboxylic acid substituted Cu(ii) phthalocyanine/reduced graphene oxide nanohybrids for hydrogen evolution reaction catalysts
No full textDue to growing environmental concerns and increasing energy needs, hydrogen, one of the key options as a future energy carrier, has lately gained more interest. In this study, we have reported nanohybrid electrocatalyst materials based on peripherally and non-peripherally carboxylic acid substituted copper phthalocyanines (CuPcs) and reduced graphene oxide (rGO) constructed via pi-pi interactions between CuPcs and rGO. Prepared nanocomposites were coated onto the surface of a glassy carbon electrode and their electrocatalytic activity for the hydrogen evolution reaction (HER) was studied. Structural, electrochemical, and surface morphological properties of the produced electrodes were investigated using Fourier transform infrared (FT-IR) and Raman spectroscopy, X-ray diffraction (XRD), linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM) analyses. Electrochemical measurements indicated that the peripherally substituted rGO/CuPc electrodes have more efficiency and activity compared to the non-peripherally substituted ones. In addition, the EIS results show that peripherally carboxylic substituted rGO/CuPc electrodes become more conductive due to the position and content of the carboxyl groups. This increasing performance of the HER implied by a smaller impedance together with more facile electron transfer kinetics indicates a pronounced enhancement of the electrocatalytic hydrogen activity of peripherally carboxylic substituted rGO/CuPc electrodes.Research Fund of the Istanbul Technical University [42019]The authors thank Dr. M. Seref Sonmez and Samet Kaplan for their contribution about ICP-MS measurements. This work was supported by the Research Fund of the Istanbul Technical University (Project Number: 42019)
Fuzzy-Petri-Networks in Supervisory Control of Markov Processes in Robotized FMS and Robotic Systems
No full textThe prospect applications of results and techniques of Petri-net and fuzzy-Petri-net formalisms is surveyed from the points of view of Systems Science and Engineering via discrete-event Markov processes and systemic structures, which are pertinent to applications in Robotized Manufacturing Engineering. The stand point of this analysis is the one of Control and Decision Sciences, and the general mathematical language utilized is the compound one consisted of directed graphs, Markov sequences, and set operations. The concepts of event-driven and time-driven sequences, being both real-world phenomena and mathematical objects, are found to be rather instrumental for development of representation models as well as control and communication algorithms that enable system design analysis with regard to higher, task-oriented decision and control level. Exposition on operating robotic and flexible manufacturing systems, via typical case-studies, follows an overview on the very concept of a system in general based on the system triple-paradigm comprising a conceptual and a representation model as well as real-world object these are aimed to mimic. A brief appropriate overview on Petri-net formalism and a similar overview on the feasible synergies of fuzzy-systems and Petri-nets are given. The resulting model representations and task-control algorithms based on case-study plants in robotized flexible manufacturing systems provide relevant illustrations. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG
Improvement of Medical Consumables Inventory Management by Simulation and Optimization in Hospitals
No full text22nd International Symposium for Production Research, ISPR 2022 -- 6 October 2022 through 8 October 2022 -- Antalya -- 291539In order to ensure the uninterrupted continuity of their activities, businesses have to keep certain levels of inventory in market conditions that cannot be precisely measured and easily predicted, such as uncertainty in demands and lead times, fluctuations in prices. Inventory for health businesses that produce health service output as a result of business activities; means materials that must be kept for examination, treatment and diagnosis and that directly affect human health. For this reason, the management of medical inventory is very important both for human health and for the financial continuity of hospitals. In this study, which explains the inadequacy of the current medical consumable inventory control method used in the operating room unit of the hospital, which is the subject of the study, by using simulation and optimization techniques, and saving inventory costs by designing alternative inventory control models to the current situation; first of all, the current medical consumable inventory of the operating room were examined by ABC-VED analysis. Then, the new inventory control model, which was created using the (s,S) inventory control policy, in order to be an alternative to the existing inventory control management and current inventory control management of the operating room, was modeled using the stochastic modeling approach in the Arena Simulation package program, using real life data from the hospital. The simulation model is run for both inventory control models and the inventory costs of the materials are calculated for both inventory control models. In the last part of the application, the (s,S) inventory control model, which was designed as an alternative to the current situation, was optimized for the selected materials using the OptQuest optimization tool in the Arena Simulation program. As a result of the optimization, the minimum, maximum and reorder point parameters of the materials used in the study were re-determined to optimize the inventory cost of the materials. By using the optimized inventory parameters (s,S), the inventory control model was run again and the inventory costs of the selected materials were calculated for the third and final time. Finally, the outputs of the three inventory control models were analyzed and it was concluded that the lowest inventory cost value with a confidence level of 95% was achieved by using the optimized (s,S) inventory control model and the current inventory control method of the operating room was insufficient in terms of cost. © 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG
THE ROLE AND EFFECTIVENESS OF HUMAN RESOURCES MANAGEMENT IN CREATING AN EMPLOYER BRAND: THE EXAMPLE OF FAST CONSUMING RETAILING
No full textHuman resource management refers to the deployment and development of an organization's human resources in the most accurate, efficient, and effective way to accomplish the organization's goals. The application of branding concepts in human resource management is known as "employer branding". Yet, there are few empirical studies on HR management in connection with an employer brand. In this context, the aim of this research is to discuss the significance and role of human resources management in terms of brand value. It is also aimed to investigate the utilization of employer branding as a tool in the selection and placement of suitable people for the business in the process of personnel selection in the setting of human resources management. A Relational screening model is used in this study. In accordance with the purpose of the research, the effectiveness of the human resource management practices scale and the employer branding practices scale were used. The research universe consists of personnel working in different departments of Migros store. A total of 472 participants, 104 women, and 368 men working at Migros in the provinces of Istanbul, Izmir, and Ankara participated in the research. SPSS 22.0 was used to analyze the data that was obtained. The findings of this study show that human resources is the unit that plays the biggest role in selecting qualified employees, which is important for branding the business. As a result of the study, it can be said that human resource management practices are effective in shaping the employer brand, which aims to create the perception that the company is a good place to work
Non-Integer Order Generalized Filters Designs
No full textNon-integer order filters can be derived from a generalized structure presented in this work. More specifically, fractional-order and power-law filters of single- or double-order are special cases of non-integer order filters with three degrees of freedom and can be implemented using a Current Feedback Operational Amplifier as the active element. The transfer function is formed as a ratio of two impedances which can be synthesized using Foster or Cauer RC networks. A curve-fitting based technique is employed for approximating the magnitude and phase of each impedance. The behavior of the presented structures is evaluated through simulation results, using the OrCAD design suite and, also, through experimental results.HEAL-LinkThis work was supported by HEAL-Link
trade name and protection of trade name
No full textLisansüstü Eğitim Enstitüsü, Özel Hukuk Ana Bilim DalıTicaret unvanı, tacirin ticari işletmesiyle ilgili iş ve işlemlerinde kullandığı ad olarak tanımlanmaktadır. Ticaret unvanı taciri başka tacirlerden ayırt etmeye yarar. Ticaret hayatında sıklıkla karşılaşılan ve zaman zaman işlevleri ya da kapsamları karıştırılabilen diğer fikri mülkiyet haklarından işletme adı, marka, coğrafi işaret ve internet alan adları ile benzer ya da farklı yönleri vardır. Ticaret unvanı yalnızca tacirler tarafından kullanılabilir ve TTK m. 11/f. 3 gereği ticari işletmenin malvarlığı içerisinde yer alır. Bu yüzden TTK m. 49 gereği taraflarca aksi kararlaştırılmadığı sürece ticaret unvanı ticari işletmeyle birlikte devredilebilir ve devralan unvanı aynen kullanmaya devam edebilir. Tacir, ticari işletmesi ile ilgili işlemleri yaparken ve belgeleri imzalarken ticaret unvanı kullanmak zorundadır. Bu yüzden ticari işletmesini işletmeye başladığı günü müteakip on beş günlük süre içerisinde, kullanmayı tercih ettiği ticaret unvanını ticaret sicile tescil ve ilan ettirmekle yükümlüdür. Tacir tescil ettirmeden ticaret unvanı kullanabilir. Ancak tescil edilen ticaret unvanının ihlali halinde tacir, TTK m. 52'de yer alan özel koruma hükümlerinden yararlanabilir. Tescil edilmeden kullanılan ticaret unvanı ise, haksız rekabet hükümleri kapsamında korunmaktadır. Ticaret unvanı çekirdek ve ekten oluşur. Olmazsa olmaz, zorunlu olan unsur çekirdektir. Tacir ticaret unvanına, istisnai haller hariç olmak üzere, isterse ek yapabilir.Trade name is defined as the name used by the trader in his business and transactions related to his commercial enterprise. It helps to distinguish the merchant from other merchants. It has similar or different aspects with business name, brand, geographical indication and internet domain names from other intellectual property rights that are frequently encountered in business life and whose functions or scopes can be confused from time to time. Trade name can only be used by traders and it is included in the assets of the commercial enterprise according to TCC art. 11/f. 3. Therefore, unless otherwise agreed by the parties in accordance with Article 49 of the TCC, the trade name can only be transferred together with the commercial enterprise and the transferee can continue to use the same title. The merchant is obliged to use a trade name while performing the transactions related to his commercial enterprise and signing the documents. Therefore, it is obliged to choose a trade name, register and declare the trade name it has chosen in the trade registry within fifteen days from the day it starts operating its commercial enterprise, The trader can use a trade name without registering it. However, in case of violation of the registered trade name, the trader,may benefit from the special protection provisions contained in Article 52 of the TCC. The trade name consists of the core and the appendix. The core is mandatory. The merchant may add to his trade name if he wishes, except in exceptional circumstances
The Effect of the Transtheoretical Model-Based Healthy Youth Program on Sexual Health Knowledge and Behavior of College Women
No full textCollege women are at more risk in terms of sexual behavior than male students. This study was carried out to determine the effect of the transtheoretical model-based Healthy Youth Program on college women's sexual health knowledge and behaviors. The sample of the study, which was conducted with a one-group pretest-posttest quasi-experimental design, consisted of 207 first-year college women. It was determined that the Healthy Youth Program was effective in improving the sexual health knowledge and behaviors of college women. It can be used as a guide in sexual health education in colleges. © 2022 Taylor & Francis Group, LLC
Qualitative research: The replacement child phenomenon
No full textLisansüstü Eğitim Enstitüsü, Psikoloji Ana Bilim DalıAdsız insan olunmaz. Ad, doğumundan ölümüne dek kişiye yoldaşlık eder ve onun ayrılmaz bir parçasıdır. Öyle ki kişi ölmüş olsa dahi onu temsil eden ismi aracılığıyla, geride kalanların ruhsallıklarında yaşamaya devam eder. Öleni anmanın türlü yolları vardır ancak ismi diğer tüm şeylerden önce kendini gösterir. Yitikler aracılığıyla yaşamaya devam ederiz. Bu yitikler, gerçek ölüm yoluyla olabilmelerinin yanı sıra, gündelik hayattaki kayıplar da olabilir. Örneğin bir yaşam döneminin bitişi, bir eşyanın yitirilişi ya da bir ilişkinin sona erişi. Kayıptan söz edildiğinde, orada bir yas olduğu bilinir. Yas, kaybı simgeleştirmek için olmazsa olmaz bir süreç olsa da bu süreç her daim kesintisiz ve yolunda olmayabilir. Yası tutulmamış kayıplar kendiliğinden ortadan kaybolmaz. Kendilerine yeni kılıklar bulabilirler, sindirim gerçekleşene dek sahibinin etrafında gezinirler, canlılıklarını korurlar. Yas dönemi başarıyla geçse dahi insan kaybettiğinin yerine bir ikame yaratır. Bu, ruhsallığın işleyişine dairdir. Kaybın yerini alan ikame, cansız bir nesne olabileceği gibi yaşayan bir kişi de olabilir. Ölüm yoluyla yitirilen kişinin adının yeni birine verilmesi bu duruma gösterilebilecek bir örnektir. Bu çalışmada, ikame çocuk fenomeni olarak bilinen, ölen kişinin adını taşıyan yaşları 28-30 arasında değişen üç kişiyle görüşmeler yapılmıştır. İkame çocukların onlara bu ismi veren kişi tarafından bir şekilde görevlendirildiği düşünülmektedir. İkame çocuk olma deneyiminin yaşamı nasıl etkilediğini anlamak amacıyla, katılımcılara kaybı ve kendilerini nasıl algıladıklarına dair sorular yöneltilmiştir. Verilerin analizinde Yorumlayıcı Fenomenolojik Analiz yöntemine başvurulmuştur. Sonucunda dört ana temaya ulaşılmıştır: "Kendilik Algısı", "Ölene Dair Anlatılar", "Ölen Aile Büyüğünün İsmini Taşıma Deneyimini Anlamlandırmak", İlame Çocukların İlişkileri". Elde edilen veriler, kendi içlerinde ve psikanalitik literatür ışığında tartışılmıştır. Sonuç olarak, ölen birinin adını taşımanın kişinin hayatına bir çerçeve getirdiği düşünülmüştür.There is no nameless human being. The name accompanies a person from birth to death and is a part of him. So much so that even if the person is dead, he continues to live in the psyches of those who are left behind, through his being that represents him. There are ways to commemorate the deceased, but his name reveals itself first of all its other values. They continue to live on the lost. These losses can be through actual death as well as losses in life. The end of a daily life cycle, the loss of an item, or the end of a relationship. It is known that when there is talk of loss, there is a mourning. Although the loss of mourning is an indispensable process to symbolize, this process cannot be always along and on the road. As soon as the unmourned losses are gone. They will take on new disguises, wander past the owner, maintain their vitality until the separation takes place. Even if the mourning period is successful, it creates a replacement for what a person has lost. This is about the transition of spirituality. The place of loss can be an inanimate object or a living person. An example of this is the naming of a person who has died through death. This substitution, known as the replacement child phenomenon, was interviewed with three people aged 28-30, named after the deceased. There the replacement offspring is commissioned in some way by the person who gave it that name is considered. In order to understand how the experience of being a substitute child perceives the lifestyle, questions were asked to the data about loss and how people perceive it. In the analysis of the data, the Interpretive Phenomenological Analysis method was used. As a result, four main themes were reached: "Self-Perception", "Narratives about the Deceased", "Making Meaning of the Experience of Carrying the Name of the Deceased Family Elder", Replacement Child Relationships". The obtained values have been discussed among themselves and in the psychoanalytic literature. As a result, bearing the deceased person's name was thought to contain his personality within a framework
Effect of linear density on the mechanical properties of 3D spacer composites with improved manufacturing quality
No full textThe innovative 3D weaving method allows I-beams to be woven in one piece and promises to eliminate delamination failure with the interlacing yarns. Therefore, woven I-beam composites have been developed to improve the resistance of laminated I-beam composite structures against delamination. In this study, woven Ibeam fabrics (IBFs) were produced by the 3D weaving method by using 300, 600, and 1200 TEX E-glass fibers with a custom-built weaving machine. Then, IBFs were made into woven I-beam composites (IBCs) using the vacuum infusion method (VIP) to examine the influence of linear density on the mechanical properties of IBCs. The results of the three-point bending test represent that 300 TEX, 600 TEX (warp density: 20 ends/cm), 600 TEX (warp density: 12 ends/cm), and 1200 TEX samples had an average maximum flexural stress of 8.6, 9.2, 8.5, and 8.8 MPa, respectively. The compression strengths for 300 TEX, 600 TEX (warp density: 20 ends/cm), 600 TEX (warp density: 12 ends/cm), and 1200 TEX were 2.6 MPa, 3.8 MPa, 2.9 MPa, and 4.1 MPa, respectively.Council of Turkey (TUBITAK) [218M703, 218M704]; ITU BAP project [40738]This study was funded by the Scientific and Technological Research Council of Turkey (TUBITAK; project number 218M703 (218M704)), 1003 Primary Subjects R & D Funding Program, and ITU BAP project number: 40738. We would like to thank S,is,ecam Elyaf for the glass fiber supply. We would like to thank Suat Ebil for his technical contribution to composites manufacturing.r Council of Turkey (TUBITAK; project number 218M703 (218M704) ) , 1003 Primary Subjects R&D Funding Program, and ITU BAP project number: 40738. We would like to thank S,is,ecam Elyaf for the glass fiber supply. We would like to thank Suat Ebil for his technical contribution to composites manufacturing
New AB3-type porphyrins with piperidine and morpholine motifs; synthesis and photo-physicochemical and biological properties
No full textIn this study, new unsymmetrical meso-tetraaryl AB(3)-type porphyrins 1 and 2 were successfully synthesized by the reaction of p-bromobenzaldehyde and p-hydroxybenzaldehyde with pyrrole in propionic acid. AB(3)-type porphyrin building blocks with hydroxyl functionality (1 and 2) were further used to generate both covalently linked metal free and Zn(II) porphyrins 3-6 having piperidine and morpholine heterocyclic units. These novel compounds were characterized by using H-1 NMR, C-13 NMR, FT-IR and MALDI-TOF spectrophotometry. The photophysical and photochemical properties of compounds 1-6 were investigated by employing UV-vis absorption and fluorescence emission spectroscopy in tetrahydrofuran (THF). From the view of biological properties, the antioxidant capacities of porphyrins were determined by using DPPH radical scavenging activity and 2 was determined as the most potent porphyrin analog with a value of 98.42% at 200 mg L-1. All the targeted compounds displayed significant DNA nuclease activity. In addition, the antimicrobial potential of compounds 1-6 was also investigated by a micro-dilution process and 2 was found to be the most effective candidate against the tested microbial strains. The newly synthesized porphyrins also showed 100% microbial cell viability inhibition against E. coli at all examined concentrations. In terms of biofilm inhibition activity, the best results for the maximum photodynamic antimicrobial biofilm inhibition of S. aureus and P. aeruginosa were obtained by compound 2 with the values of 99.75% and 93.39%, respectively