bluuebunny/crossref_metadata_2025 huggingface dataset:
MVPA and GA Comparison for State Space Optimization at Classic Tetris Game Agent Problem
Authors: Armanto Hendrawan , Dwi Putra Ronal , Pickerling Pickerling
Published: January 2022

Tetris is one of those games that looks simple and easy to play. Although it seems simple, this game requires strategy and continuous practice to get the best score. This is also what makes Tetris often used as research material, especially research in artificial intelligence. These various studies have been carried out. Starting from applying state-space to reinforcement learning, one of the biggest obstacles of these studies is time. It takes a long to train artificial intelligence to play like a Tetris game expert. Seeing this, in this study,  apply the Genetic Algorithms (GA) and the most valuable player (MVPA) algorithm to optimize state-space training so that artificial intelligence (agents) can play like an expert. The optimization means in this research is to find the best weight in the state space with the minimum possible training time to play Tetris with the highest possible value. The experiment results show that GAs and MVPA are very effective in optimizing the state space in the Tetris game. The MVPA algorithm is also faster in finding solutions. The resulting state space weight can also get a higher value than the GA (MVPA value is 249 million, while the GA value is 68 million).
Peran Media Sosial pada Komunikasi Pemasaran Aplikasi "Catch Me Up!" Melalui Email News Letter
Authors: Andriano Stefanus
Published: January 2022

Indonesia merupakan salah satu negara di dunia yang mengalami pertumbuhan cukup tinggi terkait penggunaan internet. Kemajuan teknologi ini semakin berperan penting dalam dunia komunikasi. Berdasarkan data dari We Are Social (2020), ada sebanyak 160 juta pengguna media sosial per Januari 2020 atau 59% dari total populasi saat ini. Angka tersebut bertambah (12 juta orang) atau 8,1% dari tahun 2019 ke 2020. Entitas bisnis dalam penelitian ini Catch Me Up! menggunakan perkembangan teknologi dalam upaya komunikasi pemasaran produk mereka, salah satunya adalah melalui media sosial. Media sosial dengan jumlah pengguna cukup besar di Indonesia menjadi salah satu platform menarik untuk melakukan komunikasi pemasaran. Tujuan penelitian untuk meneliti dan mengobservasi penggunaan dan pengelolaan media sosial yang digunakan oleh salah satu layanan email newsletter yang menyasar pembaca dari kamu millennial dan generasi Z yaitu Catch Me Up! Penelitian ini menggunakan metode penelitian kualitatif melalui studi literature dan observasi terhadap pengelolaan komunikasi pemasaran yang disupport oleh pemanfaatan media sosial oleh Catch Me Up! Penelitian menunjukkan dengan dukungan dari pemasaran media sosial, Catch Me Up! berhasil menarik perhatian calon pembaca mereka dari kaum millennial dan generasi Z.
Pengaruh Firm Generated Content, Electronic Word of Mouth, Celebrity Endorsement, Harga dan Fasilitas terhadap Keputusan Memilih Klinik Gigi
Authors: Putri Vania Mariska , Sijabat Rosdiana
Published: January 2022

With the development and increasing number of dental clinics, customers are exposed to more options when it comes to choosing dental clinic. Therefore, social media marketing strategies are becoming more popular among dental services. This study aims to determine the effect of firm generated content, electronic word of mouth, celebrity endorsement, price, and facilities towards customer’s purchase decision in choosing dental clinic. This research is a case study of Dentalosophy Dental Clinic which involved 100 respondents who had done dental treatments in Dentalosophy during January to December 2020. Data collection was conducted by distributing questionnaires using purposive non-probability sampling method. Furthermore, the data were analyzed using descriptive statistical analysis and multiple linear regression methods. The study shows that firm generated content, electronic word of mouth, celebrity endorsement, and facilities have positive and significant effect towards customer’s purchase decision in choosing dental clinic. Contrastingly, price does not have a negative and insignificant effect on customer’s decision in choosing dental clinic. Based on the result, Dentalosophy shall do further analysis, planning and evaluation of marketing strategies related to firm generated content, electronic word of mouth, and celebrity endorsement. Dentalosophy should also be able to maintain and improve their facilities as well as providing qualified health protocol especially during COVID-19 pandemic. Further study is expected to analyze the effect of other variables such as location, and dentist’s reputation towards purchase decision in choosing dental clinic.
Dislike: Facbook's Anticompetitive Monopoly on Social Media and Why U.S. Antitrust Laws Must Adapt to the Technological Era
Authors: Nielson Elizabeth
Published: January 2022

Although Facebook started as a way to connect with college classmates, it has grown into one of the largest technology companies in the world. Facebook is no longer solely a way to connect with classmates. Instead, it is the powerhouse of social networks and dominates the online advertising business. Facebook has grown at an unprecedented rate—acquiring businesses and gathering users’ privacy along the way—partially because of the failure of U.S. antitrust laws to adequately protect against anticompetitive and monopolistic behavior in the technological arena.

Historically, antitrust laws have used the consumer welfare standard to determine if entities are engaging in anticompetitive and monopolistic behavior. However, as technology continues to develop in the twenty-first century, the way consumer welfare is measured must be revised. This Comment outlines the development and history of antitrust laws to illustrate how the current antitrust model fails to adequately capture anticompetitive and monopolistic behavior in the technological arena. Using Facebook as a case study, this Comment shows how Big Tech harms consumers in ways not traditionally thought of—loss of control over data and privacy, lack of innovation, and decline in business startups—and outlines ways Congress and courts must approach U.S. antitrust laws to better encapsulate Big Tech. These methods promote preserving the competitive process and market structure while giving consumers a voice in the protection of their privacy and data.
AVALIAÇÃO DA QUALIDADE E ATIVIDADE ANTIBACTERIANA DE EXTRATO DE PRÓPOLIS
Authors: De Lima Cristina Peitz , Silva Bolino Dayane , Caroline Dionísio Kelly , Santos de Miranda Gabriela , Kelly Fernandes Maia Grayce , Guilherme de Paula André , Kenro Alves de Campos Giuliano
Published: January 2022

A própolis é formada por material resinoso e balsâmico. É empregada pela humanidade para fins terapêuticos, pois possui ação anti-inflamatória, antibacteriana e antioxidante. O objetivo deste trabalho foi avaliar o padrão de identidade e qualidade de quatro extratos hidroglicólicos de própolis produzidos com propilenoglicol e água, através de análises sensoriais (aroma, cor, sabor e aspecto) e físico-químicas (extrato seco, cera, flavonoides, compostos fenólicos, atividade de oxidação, espectro de absorção UV-Vis, acetato de chumbo e hidróxido de sódio), bem como avaliar potencial antibacteriano dos extratos contra cepas de Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa e Burkholderia cepacia. Os resultados obtidos foram comparados ao da Legislação Brasileira vigente referente aos extratos hidroalcoólicos e alcoólicos. Nenhuma das amostras analisadas atendeu todos os requisitos, tanto os sensoriais como os físico-químicos estabelecidos. Entretanto todas as amostras apresentaram atividade antibacteriana sobre as cepas utilizadas. Os resultados indicam que os extratos hidroglicólicos de própolis apresentam um padrão de identidade e qualidade diferente do que é estabelecido para extratos de própolis hidroalcoólicos e alcoólicos. Os extratos hidroglicólicos de própolis promoveram inibição do crescimento das bactérias gram-positivas e gram-negativas testadas. Mais estudos devem ser conduzidos para avaliar o potencial terapêutico dos extratos hidroglicólicos de própolis.
Topical treatment of inherited epidermolysis bullosa
Authors: Kubanov Alexey A. , Chikin Vadim V. , Karamova Arfenya E. , Monchakovskaya Ekaterina S.
Published: January 2022

Inherited epidermolysis bullosa is a group of genetic skin disorders characterized by skin erosions, ulceration, skin and mucosal blistering requiring topical treatment. This review demonstrates major clinical manifestations of epidermolysis bullosa and its mechanisms of development. According to these features the main principles of topical treatment and drug therapy were developed, including physical protection from trauma, moisturizing, improvement of wound healing, prevention and management of infection, itch and pain management. Drug therapy is outlined with dosage forms, drug routes of administration, age restrictions indicated in the instruction for medical use for the medications that could be used in epidermolysis bullosa patients. The authors provide indications for clinical use of antiseptics, disinfectants, antibiotics, antimicrobial agents, emollient cream and drugs reducing itch and pain.
The genetic determinants of Mycobacterium leprae resistance to antimicrobial drugs
Authors: Verbenko Dmitry A. , Solomka Victoria S. , Kozlova Irina V. , Kubanov Alexey A.
Published: January 2022

The review is devoted to the appearance of resistance of a slowly developing disease leprosy to antimicrobial therapy (AMP), primarily recommended by the World Health Organization. The main danger of drug resistant leprosy is in the difficulty of identifying, since the causative agent of the disease is not cultivated on artificial media, and the methods for diagnosing drug resistance that are currently used take a long time. The drug resistance of the Mycobacterium leprae strain even to individual components of combination drug therapy result to the development of symptoms of the disease despite undergo anti-leprosy therapy, which in turn can cause the patient to become disabled. Currently, in the Russian Federation, there is no approved test for detecting Mycobacterium leprae DNA, and the determination of genetic determinants of resistance is carried out by sequencing genome regions determined by WHO recommendations: small gyrA, folP and rpoB genes loci. At the same time, modern studies in endemic regions reveal an increased level of Mycobacterium leprae strains resistant to individual components of combined drug therapy. The use of next generation sequencing (NGS) has made it possible to identify additional genetic determinants of leprosy resistance to the components of combination drug therapy. The current situation is relevant to antimicrobal drug resistance surveillance by using of quick identification systems for most frequent genetic resistance determinants of Mycobacterium leprae.
The literature search was carried out using keywords in the Scopus, PubMed and RSCI databases.
Narrow-band phototherapy in the treatment of atopic dermatitis: mechanisms of action, methodology of implementation
Authors: Zhilova Maryanna B. , Gorodnichev Pavel V.
Published: January 2022

Phototherapy is widely used to treat various chronic skin diseases. One of the most effective methods of treatment is narrow-band medium-wave ultraviolet radiation with a wavelength of 311 nm (UVB-311). UVB-311 is used for such immune-mediated diseases as atopic dermatitis, psoriasis, vitiligo, mycosis fungoides and others. Despite the fact that the method was developed more than 30 years ago, the exact mechanism of its therapeutic action remains insufficiently studied. To date, most of the effects of UVB-311 are explained by its effect on the immune cells of the skin. This review examines data on the effects on the main molecular targets, including T-lymphocytes, keratinocytes, Langerhans cells, cytokine profile, epidermal barrier proteins. Data on the features of the pathogenetic effect of UVB-311 on the immune mechanisms of pathogenesis in atopic dermatitis were obtained. The issues of dosing by determining the minimum erythemic dose (MED) or skin phototype, methodology of procedures are discussed. Prospects for further study of photobiological aspects of UVB-311 action are determined.
Cerebral venous thrombosis of the sphenoparietal sinus: A case report
Authors: Milton Camille K. , Gordon David L. , Glenn Chad A. , Conner Andrew K.
Published: January 2022

Background:

Cerebral venous thrombosis (CVT) is a rare cause of stroke that preferentially affects reproductive aged females and patients with hereditary or acquired thrombotic risk factors. The superior sagittal sinus and transverse sinus are the two most common sites for thrombus formation.

Case Description:

We report a case of CVT arising in a very rare location, the sphenoparietal sinus. A 32-year-old woman with a history of factor V Leiden mutation and multiple prior episodes of venous thromboembolism presented with a new-onset seizure, headache, and emesis. CT angiography ultimately revealed thrombosis of the left sphenoparietal sinus. The patient received anticoagulation with apixaban with resolution of symptoms and without complications.

Conclusion:

This case serves as an uncommon example of sphenoparietal sinus thrombosis managed with novel oral anticoagulant treatment.
MEDICOLEGAL CORNER. Failure to replace obstructed lumbar drain after thoracic-abdominal aortic aneurysm repair leads to paraplegia
Authors: Epstein Nancy E.
Published: January 2022

Background:

To avoid spinal cord ischemia following endovascular/open thoracic-abdominal aortic aneurysm (T-AAA) repair, lumbar drains (LDs) are placed to reduce intraspinal pressure, and increase spinal perfusion pressure. Here, we present a medicolegal case in which a critical care (CC) physician knew that the LD was obstructed following a T-AAA repair, but did not replace it until the patient became paraplegic. The patient was left with permanent sphincter loss, and a severe paraparesis.

Methods:

A geriatric patient with multiple medical/cardiovascular comorbidities first underwent an endovascular T-AAA (Crawford Type II T-AAA) repair several years ago. Due to continued expansion of the aneurysm, the patient now required an open T-AAA repair.

Results:

Prior to the open T-AAA surgery, a prophylactic LD was placed. Postoperatively, the patient required a second emergency operation to repair a leaking intercostal artery anastomosis. The next morning, the CC physician clearly documented the drain was obstructed, but chose to follow the patient; 3.5 hours later, the patient became paraplegic. The LD was replaced after the patient was first sent to MRI to rule out a spinal cord hematoma, resulting in a total delay of more than 6.5 h from when the CC physician first became aware of the non-functioning LD. The patient later regained only partial function, remaining significantly paraparetic with total loss of bowel/bladder function.

Conclusion:

LD for endovascular/open T-AAA repairs reduce spinal fluid pressure, increase spinal cord perfusion pressures, and limits the frequency (i.e. 2.3–2.6%) of resultant spinal cord ischemia/paralysis. Here, despite the CC physician’s failure to replace an obstructed LD after an open T-AAA, repair, the jury rendered a defense verdict.
Postsurgical functional outcome prediction model using deep learning framework (Prediction One, Sony Network Communications Inc.) for hypertensive intracerebral hemorrhage
Authors: Katsuki Masahito , Kakizawa Yukinari , Nishikawa Akihiro , Yamamoto Yasunaga , Uchiyama Toshiya
Published: January 2022

Background:

Reliable prediction models of intracerebral hemorrhage (ICH) outcomes are needed for decision-making of the treatment. Statistically making such prediction models needs a large number of samples and time-consuming statistical analysis. Deep learning (DL), one of the artificial intelligence, is attractive, but there were no reports on DL-based functional outcome prediction models for ICH outcomes after surgery. We herein made a functional outcome prediction model using DLframework, Prediction One (Sony Network Communications Inc., Tokyo, Japan), and compared it to original ICH score, ICH Grading Scale, and FUNC score.

Methods:

We used 140 consecutive hypertensive ICH patients’ data in our hospital between 2012 and 2019. All patients were surgically treated. Modified Rankin Scale 0–3 at 6 months was defined as a favorable outcome. We randomly divided them into 100 patients training dataset and 40 patients validation dataset. Prediction One made the prediction model using the training dataset with 5-fold cross-validation. We calculated area under the curves (AUCs) regarding the outcome using the DL-based model, ICH score, ICH Grading Scale, and FUNC score. The AUCs were compared.

Results:

The model made by Prediction One using 64 variables had AUC of 0.997 in the training dataset and that of 0.884 in the validation dataset. These AUCs were superior to those derived from ICH score, ICH Grading Scale, and FUNC score.

Conclusion:

We easily and quickly made prediction models using Prediction One, even with a small single-center dataset. The accuracy of the DL-based model was superior to those of previous statistically calculated models.
Cauda equina syndrome due to lumbar disc herniation and ossification of the yellow ligament
Authors: Yunoki Masatoshi , Umakoshi Michiari , Tatano Masaki , Imoto Ryoji
Published: January 2022

Background:

Patients with lumbar disc herniation at a level with significant stenosis due to ossification of the yellow ligament (OYL) may rarely present with rapid neurological deterioration warranting emergent surgery.

Case Description:

A 40-year-old female developed an acute cauda equina syndrome (CES) attributed to an acute lumbar disc herniation and to marked canal stenosis due to OYL. As the patient underwent a 9 h delayed removal of the ossified ligament and discectomy, she sustained only minimal recovery.

Conclusion:

Patients diagnosed with acute lumbar disc herniation and severe stenosis due to OYL who present with acute CES warrant emergent surgical decompression to avoid permanent postoperative neurological sequelae.
Considerations in revising occipitocervical fixation for dysphagia
Authors: Iqbal Mazhar , George K. Joshi
Published: January 2022

Background:

Dysphagia after occipitocervical fixation (OCF) is a complex phenomenon and revision surgery in this context involves difficult decision-making. The pathogenesis is explored and surgical strategies discussed. A surgical strategy that has not been described before in the management of this condition, is discussed with two illustrative cases.

Methods:

Two cases are presented where dysphagia occurred after OCF for C1/C2 instability. The preoperative imaging was not available to determine whether the optimal craniocervical angle had been achieved. Both had revision surgery with removal of the cranial fixation and fusion to the atlas instead. One of the cases had the revision surgery more than 10 years after the original OCF.

Results:

The dysphagia recovered after the revision surgery in both cases. The patients gained weight and reported more satisfaction with their posture and head movements compared to before the revision surgery. There was no head ptosis and instead, patients reported better forward gaze and head position.

Conclusion:

In cases of C1/C2 instability, it is preferable to perform C1/C2 fusion rather than OCF. If performing an OCF, care must be taken to fix the head at the same O-C2 angle as preoperative. When an OCF done for C1 C2 instability ends up causing dysphagia, it is feasible and effective to shorten the rostral construct by removing the cranial fixation and fusing to C1 instead.
Targeting gut dysbiosis as a means to enhance recovery from surgical brain injury
Authors: Danehower Sarah
Published: January 2022

Background:

Surgical brain injury (SBI) impacts roughly 800,000 people who undergo neurosurgical procedures each year. SBI is the result of unavoidable parenchymal damage, vessel disruption, and thermal injury that is an inherent part of all neurosurgical procedures. Clinically, SBI has been associated with postoperative seizures and long-term neurobehavioral deficits. Current therapies are aimed at providing symptom relief by reducing swelling and preventing seizures. However, there are no therapies aimed at reducing the extent of SBI preoperatively. The microbiome-gut-brain axis may serve as a potential target for the development of new preventative therapies due to its extensive involvement in central nervous system function.

Methods:

An extensive literature review was conducted to determine whether there is a potential role for dysbiosis treatment in reducing the extent of SBI.

Results:

Treatment of gut dysbiosis deserves further exploration as a potential means of reducing the extent of unavoidable SBI. Dysbiosis has been correlated with increased neuroinflammation through impaired immune regulation, increased blood-brain barrier permeability, and increased production of reactive metabolites. Recently, dysbiosis has also been linked to acute neurological dysfunction in the postoperative state. Importantly, treatment of dysbiosis has been correlated with better patient outcomes and decreased length of stay in surgical patients.

Conclusion:

Current literature supports the role of dysbiosis treatment in the preoperative setting as a means of optimizing neurological recovery following unavoidable SBI that results from all neurosurgical procedures.
Sticky point temperature as a suitable method in evaluation of shelf life of food powders
Authors: Hashemi Neda , Milani Elnaz , Mortezavi Seyed Ali , Yazdi Faride Tabatabayi
Published: January 2022

Based on the maintenance of quality of a product in terms of nutritional value, flavor, texture and appearance during storage, the evaluation of shelf life of food is a necessity. The shelf life of food powders depends on the physical changes and their stickiness. This is an importance phenomenon during production, packaging and distribution. Stickiness reduces the quality and efficiency. This study is aimed to evaluate applied methods to control the temperature in which stickiness is occurred. This study evaluates different methods of measuring Sticky point temperature of food powders and the relationship between this temperature and glass transition temperature, storage environmental conditions and quality of food powders can be expressed. The results show the relationship between the increase of environmental moisture and reduction of sticky point temperature. This study aims to evaluate the applied methods to monitor the temperature at which stickiness is occurred. This study evaluates different methods of measuring sticky point temperature of food powders and the relationship between this temperature and glass transition temperature, storage environmental conditions and quality of food powders is expressed. The results show the relationship between the increase of environmental moisture and reduction of sticky point temperature and reduction of glass transition temperature of food powders. Also, by reduction of sticky point temperature, shelf life of food powder is reduced. By suitable control and measurement of sticky point temperature, the shelf life of food powders can be increased.
The Impact of Drama on Iranian EFL Young Learners’ Reading Comprehension Performance
Authors: Tajareh Mansoureh Jozi , Oroji Mohamad Reza
Published: January 2022

This paper intended to consider reading comprehension learning among EFL young learners through the techniques of drama. The objective of the study was to examine to what extent drama activities could develop reading comprehension ability of Iranian EFL young learners. The methodology was quasi-experimental and the population of the research was 102 eighth-grade female students form Shohadaye Enghelab high school in the year 2015-2016, among whom, 44 participants were finally chosen. They were randomly assigned into two groups (control group and experimental group). In experimental group students underwent drama activities in reading classes; however, in the control group, students were taught reading comprehension in the conventional way. Having assigned them into the control and experimental groups, the researcher ran a Pre-test and a Post-test. In order to evaluate the results, an independent T-test was administered. The results proved that the application of drama techniques can have a great impact on Iranian EFL young learners' comprehension ability.
Form of Narratives Used by Inexperienced Teachers in L2 Classroom Discourse
Authors: Doqaruni Vahid Rahmani , Najjari Hossein
Published: January 2022

Despite the fact that the kinds of experiences that teachers have had might help us to understand why they hold the views they do, the presence and contribution of narratives of personal experience in second language classroom discourse has received little attention. In an effort to fill this gap in the field, this study focuses on the use of narratives of personal experience in English as a Foreign Language (EFL) classroom contexts by Iranian teachers to show what the form of their narratives are. This study is theoretically based on the constructionist theory of narrative analysis which deals with how narrative is produced. The present study is qualitative in nature in that it seeks to document, analyze, and interpret naturally occurring data in the EFL classroom settings. The participants were two EFL teachers, teaching general English courses in a private language institute in Babolsar, northern Iran. To collect the required data for this study, the first researcher observed the classrooms as a non-participant and made audio-recordings from three lessons of each teacher (resulting in 12 hours of naturally occurring data). The audio-recordings were then analyzed. In this way, the data were first transcribed and then the narratives in them were identified. Through an analysis of narratives of personal experience, this study has made a start at understanding the contribution such narratives make in an institutional context.
Evaluation of Iranian Second-Grade High School English Textbook from Teachers’ Perspectives
Authors: Shabani Karim , Safari Fatemeh
Published: January 2022

Among the various tools in educational contexts to affect L2 learners' language proficiency, textbooks play a crucial role (Garinger, 2001) not least because of their inherent property to cater to the learners' specific needs. The aim of this study was to investigate the appropriateness of Iranian High schools “English Textbook 2” from teachers’ perspectives. For this purpose, 80 male and female experienced English language teachers were randomly selected from different high schools in Dezful, Iran. They were chosen based on the availability sampling method. The evaluation of the textbook was conducted quantitatively through a 5-point Likert scale checklist which was proposed by Litz (2005). The textbook evaluation scheme contained 19 items which relied upon four main criteria namely a) layout and design, b) subject and content, c) activities, and d) skills (see Appendix). The results indicated that from the teachers' perspective there was an incongruity between the presumed educational purposes and the teachers and learners' needs. It is believed that the results of the study could provide intriguing hints for the curriculum designers and materials developers to think of adapting the available materials or adopting an alternative textbook which contains an organized layout, useful and real-life subjects and contents, covers relevant skills and activities, and corresponds to teachers’ and learners' emerging needs.
Fractional Order PID Control mechanism for Helicopter Gearbox Test Control with internal and External Disturbance
Authors: Takloo Somayeh Dolatkhah , Mozafari Shadan , Rezazadehmohamadi Mehdi , Mardani Mohsen
Published: January 2022

Fractional order PID (FOPID) controller is a special kind of PID controller which it’s derivative and integral order are fractional rather than integer and has five parameters. Using this control improves the control results in accuracy and speed. Statistics show that using this controller for systems with high sensitivity is more practical and safe. Mechanical closed loop test rig acts an important role in aviation industry. Fault diagnosis in gearboxes and other critical components of the airplane and helicopters is the most important part of this industry. More over testing rotating equipment is very important for system security verification. There are several testing technics and many important testing parameters. One of these essential factors is gearbox security test technique. What’s more, mechanical closed-loop system is a very cost effective method. For financial, energy consumption and maintenance reasons, using a system with the ability of energy regeneration is suggested. In this paper mechanical close loop with energy regeneration mechanism is used for testing the helicopter gearbox. Two kinds of controllers are used for keeping the closed-loop’s torque in the constant value. The result of paper shows the behavior of PID and FOPID controller methods in controlling torque circulating in this mechanical closed loop. Beside the overshoot and settling time is considerable.
Synthesis of Cobalt nanoparticles by Complex Demolition Method Using the Reaction between Organic Ligand Schiff base and Cobalt Chloride by Ultrasonication
Authors: Hoseyni Seyed Jalal , Manoochehri Mahboobe , Asli Maryam Daghighi
Published: January 2022

The present article deals with the formation of cobalt nanoparticle from cobalt (II) chloride salt and Schiff base ligand derived from para-chloro-aniline and 3-nitro benzaldehyde. Through the method, instead of using the sol-gel or thermal degradation methods, ultrasound device is used to synthesize the existing nanoparticles. During ligand synthesis method to ensure the formation of Schiff base ligand, IR-profile Jasco4200FT-IR spectrometer was used in the contexts of KBr tablets. Finally, to ensure the formation of nanoparticles, EM32000 electron scanner microscope was used.
Evaluation of PAC with Nanoclay as drilling mud
Authors: Kafashi Sahar , Karimi Gholamreza , Rasaei Mohamadreza
Published: January 2022

Nine different formulations were built and subsequently their rheological properties were measured according to American Petroleum Institute (API). Porous media model was designed by Corel DRAW (Corel Corporation of Ottawa, Canada)computer software and applied on the glass. Using this kind of micro-models enable us to design the porous media with real dimensions. Statistical analyses showed that 75%wt of nanoclay suspension and Poly anionic cellulose could successfully improve the rheological properties. The existence of nanoclay in the suspension could significantly compensate viscosity reduction up to two times by increasing shear rate.
The Effect of Regulative Metacognition Strategies on Reading performance of Iranian Pre-intermediate Learners
Authors: Sobhani Fatemeh , Babashamsi Parastoo
Published: January 2022

Reading is one of the most important skills among all the other language skills. It helps the learner to achieve a lot of information and serves as a primary source of input, and consolidates their previous knowledge. The present study aimed at investigating the effect of regulative metacognition strategies on EFL learners' reading comprehension. A null hypothesis was proposed to answer the questions of this study: - There is no statistically significant relationship between regulative reading strategies and reading comprehension. To test this hypothesis, a sample of 126 pre- Intermediate students from an English Institution were chosen, which reduced to 77 by conducting a placement test as a proficiency test. Then they were randomly divided into two groups. The control group took placebo (usual performance) and experimental group took the treatment (regulative metacognition strategies). Before starting the study a pretest was conducted. After the treatment they administered a posttest to evaluate the significance of the treatment. Then the Independent t- test was utilized, to analyze and evaluate the data from these two tests. Results revealed from this evaluation indicated that in post-test there is a significant difference between two groups, implying that regulative metacognition strategies had a positive effect on reading comprehension.
Synthesis and characterization of MgO/PEG/GO Nanocomposite and its application for removal of Copper (II) from aquatic media
Authors: Samadi Susan , Abbaszadeh Maryam
Published: January 2022

In this study, MgO/PEG/GO nanocomposite was synthesized by a sol-gel and solvothermal methods. with three chemical compounds that had adsorption property. Microstructure of synthesis nanocomposite was investigated by XRD, SEM and FT-IR. The XRD pattern confirms crystalline structure of MgO and GO. The SEM images validate formation of MgO particles on GO layers in Nano size. The analysis EDX is shown in the presence of magnesium and FT-IR result shows expected structure. The MgO/PEG/GO nanocomposite was used for removing copper (II) ion from water and the effective factors on removal were optimized. The results showed that the maximum of removal in pH, amount of adsorbent and contact time are equal to 7, 0.01 g and 20 minutes respectively. Investigating the effect of interfering ions had no considerable effect on removal efficiency.
Providing an Evaluating Model and prioritizing factors in empowering employees with hierarchical Method (AHP)
Authors: Seryasat Hamid Rahmani
Published: January 2022

Because human resources is considered as the most valuable factor of production, capital and the main source of any organization competitive advantage, human resources improvement is very important. If an organization wants to make progress in their affairs and not fall behind the competition should have expert human resources with sufficient knowledge and ability. The instrument that used for this purpose to help managers is empowerment process. Movement an in order to empower employees need to improve and optimize the organization, improving and training of managers and ultimately improving and training of employees. In this paper, we have investigated and rated the effective factors in the employees' empowerment of cultural heritage and tourism organization of Qazvin Province by using AHP hierarchy method. For this purpose, initially the existing concepts in empowerment and the effective factors have been studied. Then a questionnaire has been developed and designed to identify effective factors in the studying statistical population. Then, we considered reliability and nineteen factors of empowerment by using SPSS15 software that finally used to rank the affective factors on the empowerment of hierarchical techniques (AHP). Ranking factors results indicate that training, encourage and ability and skill of the staff placed on the first to third order, respectively and also access to information factors placed on the nineteenth order. Managers have done some plans in order to empower employees with respect to the weight of each factor and its importance in its impact on the empowerment of employees empower staff, to be effective with empowerment of employees to achieve the objectives of the organization.
Modeling and simulation of wind turbines and responsive loads in smart grids
Authors: Sadeghi Hamed , Hakimi Seyed Mehdi
Published: January 2022

In order to implement demand response programs appropriate equipment must be provided to subscribers at any moment be aware of the price of electricity and the price of electricity at different times to an appropriate response to reduce their costs to the network, that This would reduce consumers will demand at peak times. Smart grid using two-way communication and transmission of information to consumers as well as the use of advanced measurement system, reasonable structure has provided for the full implementation of demand response programs. In this paper, a wind turbine that is connected to a smart grid responsive loads to consider and examine the systems in the grid.
A survey of the correlation between trust and reputation in electronic commerce B2C using Alexa rank
Authors: Najafi Issa
Published: January 2022

In general approaches of electronic trust in B2C e-commerce, to facilitate purchase decision process, the customers select valid brands based on the authenticity of web and regulatory mechanisms. This approach is not suitable for purchase from small companies without active brands in e-commerce. To purchase from these companies, we should follow other e-trust approaches. One of the approaches applied by information literate people is referring to valid ranking sites like Alexa rank. This study evaluates the correlation between Alexa rank and formal measures of trust in electronic space and extracts a new method for e-trust based on electronic reputation extracted from the results of existing ranking in ranking sites. To do this, 100 store websites are selected based on regulatory lists and the formal criteria of trust is measured and the correlation of these criteria with Alexa rank is compared.
Plans identify indicators (water, soil and Industry) applicable in Ilam Dam basin water with emphasis on sustainable development
Authors: Khalili Karam , Jamshidi Ali , Mohammadi Esfandiar
Published: January 2022

The negligence of development impacts in recent decades has imposed serious problems to great projects due to inattention to the environment. To this end, a positive movement towards the assessment of strategic development effects has been triggered in recent years. This study aims to identify and prioritize executable development projects in the area of drinking water dam of Ilam with the priority of assessing environmental impacts. It is an applied study in terms of objective and a descriptive-analytical study in terms of method. The study population consists of two qualitative and quantitative sections. Experts who are familiar with related issues, problems and impacts of dam making projects constitute the first section while the second one covers specialists who are familiar with the drainage basin of dam. The samples of both sections were selected using purposive sampling method. Data was collected by questionnaire (both open-ended and close-ended questionnaires) and was analyzed using SPSS and Liserl. Finally, 9 important factors were identified as the main title of projects namely: 1) plant product projects, 2) livestock product projects, 3) water, soil and industrial projects, 4) veterinary medicine projects, 5) forest, pasture and watershed management projects, 6) promotion and exploitation projects, 7) economic association projects, 8) production cooperatives for providing agricultural engineering services and 9) job opportunities of agriculture sector. In addition, 82 development-titled projects were extracted to be studied in Ilam dam site.
Evaluation of GMDH and MLP Networks for Prediction of Compressive Strength and Workability of Concrete
Authors: Ghazanfari Niloufar , Gholami Shayan , Emad Alireza , Shekarchi Mohammad
Published: January 2022

Measurement of compressive strength and workability of concrete as the most important mechanical properties of concrete have always been a significant topic to designers. Considering a large number of parameters influencing the mixed design of concrete and the reduction in the number of test samples, today various inferential algorithms are used for discovering relationships, predicting mechanical properties, and identifying nonlinear patterns along with optimizing concrete mixtures. Among these algorithms, artificial neural networks are highly effective and reliable alternative for complicated systems with uncertain structure in which the aim is to obtain different kinds of relationship between the input and output variables with high orders. The methodology used in this study is based on MLP and GMDH artificial neural networks, which lack theoretical basis and are known as inverse engineering (IE) or black box models. To present a model for prediction of these parameters, two artificial neural network approaches were investigated and the performance of GMDH model, when comparing the laboratory results with the predicted values, suggests acceptable accuracy of this model in evaluation of compressive strength and slump.
The Impact of Drama-Based Instruction as Effective Language Learning Strategies on Improving Primary Iranian ESL Learners’ Speaking Abilities
Authors: Karimzadeh Pooneh
Published: January 2022

The present article investigates the significant effect of drama-based techniques as language learning strategies that can improve communicative competence to achieve appropriate level of speaking abilities. As a matter of fact drama based strategies are similar to that of language learning strategies that both as pedagogical tools deal with improving high order thinking skills that result in learner’s self-control and facilitate the internalization, storage, retrieval and interaction in the process of accomplishing well-grounded speaking tasks. In order to investigate this study, a total of 60 primary school children in third to sixth grade in private English Institute in Iran, take Ket Movers Exam. 30 homogeneous students are chosen and are divided in two groups, 15 in experimental who receive treatment and the other in control group. Data analysis presents the significant role of using drama-based strategies as beneficial learning strategies for developing communicative ability.
Relationship marketing in Pasargad Bank
Authors: Nadervandi Naghmeh , Mogharebi Ali Esmaeli Zadeh , Sabokro Mehdi
Published: January 2022

Nowadays, maintaining and developing the capabilities of the organization depends not only on providing top-quality services, but also on the ability to attract customers and faithful them by creating favorable conditions. Relationship marketing is an important tool that can provide these conditions for customers. The purpose of this research was to investigate this factor and its impact on brand quality. The statistical population included the customers of Pasargad Bank in Tehran. In order to collect data, after determining sample size by Cochran formula to the extent of 384 individuals, the standard questionnaires were used. The method of the present study is quantitative research that has been conducted in descriptive method. The face validity was determined by management professors and the reliability was determined by relevant software and Cronbach’s alpha. Descriptive and inferential statistical tests were used to test hypotheses and finally, the results of structural equation modeling showed that providing favorable conditions by relationship marketing can affect the quality of Bank and also attract customers.
Remediation potential of native plant species in Iran to remove diesel from contaminated brownfields
Authors: Zand Ali Daryabeigi
Published: January 2022

Redevelopment of brownfields sites is a challenging issue throughout the world, which has gained increasing attention in recent years. Lands affected by oil wastes and products are among common types of brownfields sites in Iran. Sorghum (Sorghum bicolor) was employed to remediate diesel polluted soils in this study. The main aims of this study were to examine the phytoremediation potential of Sorghum (Sorghum bicolor) to remove hydrocarbons from spiked soils as well as the influence of diesel on growth characteristics of the sorghum. Soils were artificially contaminated with 100, 500, 1000, 3000 and 5000 mg/kg diesel. Residual hydrocarbons were measured at different intervals. Establishment of considerable biomass is one critical factor affects phytoremediation potential of plant species which has been addressed in this research. Sorghum demonstrated promising growth behaviour in contaminated soils; however, higher concentrations of hydrocarbons depressed growth parameters of sorghum to some extent. The highest hydrocarbon removal rate was obtained in presence of 100 mg/kg diesel, which was 93.54 % compared to the initial level. Results showed that sorghum is an effective plant that can be used in remediation of hydrocarbon contaminated sites.
Biochemical responses of the earthworm Allolobophora caliginosa exposed to cadmium contaminated soil in the Northeast of Algeria.
Authors: Otmani Hadjer , Tadjine Aicha , Moumeni Ouissem , Zeriri Ibtissem , Amamra Rima , Samira Djekoun Bensoltane , Djebar Mohamed Reda , Berrebbah Houria
Published: January 2022

Les réponses de vers de terre Allolobophora caliginosa aux expositions sub-létales de cadmium (Cd) (25, 50, 100, 150 mg/500g d.w), ont été examinées dans cette étude. L'Enquête a été faite sur le taux de protéines totales, le stress oxydatif et la réponse antioxydante à travers un ensemble de biomarqueurs enzymatiques ((catalase (CAT), glutathione (GSH), glutathione S-transferase (GST) et malondialdehyde (MDA)), qui ont été choisie pour évaluer les réponses des vers de terre dans une période jusqu'à deux semaines. Les vers de terre exposés au cadmium ont démontré différentes réponses des biomarqueurs enzymatiques. Le cadmium a augmenté le taux de protéines totales. De plus, la surveillance des biomarqueurs de stress oxydatif a montré un épuisement significatif au niveau du glutathione (GSH) accompagné d'une forte augmentation de glutathione S-transferase (GST) et de la stimulation de l'activité catalase (CAT) et malondialdehyde (MDA). Nos résultats indiquent les effets toxiques du cadmium sur les vers de terre Allolobophora caliginosa.
Facilities at Indian Institute of Astrophysics and New Initiatives
Authors: Bhatt Bhuwan Chandra
Published: January 2022

The Indian Institute of Astrophysics is a premier national institute of India for the study of and research into topics pertaining to astronomy, astrophysics and related subjects. The Institute’s main campus in Bangalore city in southern India houses the main administrative set up, library and computer center, photonics lab and state of art mechanical workshop. IIA has a network of laboratories and observatories located in various places in India, including Kodaikanal (Tamilnadu), Kavalur (Tamilnadu), Gauribidanur (Karnataka), Leh & Hanle (Jammu & Kashmir) and Hosakote (Karnataka).
The Nainital Cape Survey Project : A Search for Pulsation in Chemically Peculiar Stars
Authors: Chakradhari Nand Kumar , Joshi Santosh
Published: January 2022

The Nainital-Cape Survey is a dedicated search programme initiated in 1999 in the coordination of astronomers from SAAO South Africa, ARIES Nainital and ISRO Bangalore. Over the last 17 years a total of 345 chemically peculiar stars were monitored for photometric variability, making it one of the longest ground-based survey to search for pulsation in chemically peculiar stars in terms of both time span and sample size. Under this survey, we discovered rapid pulsation in the Ap star HD12098 while δ Scuti-type pulsations were detected in seven Am stars. Those stars in which pulsations were not detected have also been tabulated along with their detailed astrophysical parameters for further investigation.
Analysis of HD 73045 light curve data
Authors: Das Mrinal Kanti , Bhatraju Naveen Kumar , Joshi Santosh
Published: January 2022

In this work we analyzed the Kepler light curve data of HD 73045. The raw data has been smoothened using standard filters. The power spectrum has been obtained by using a fast Fourier transform routine. It shows the presence of more than one period. In order to take care of any non-stationary behavior, we carried out a wavelet analysis to obtain the wavelet power spectrum. In addition, to identify the scale invariant structure, the data has been analyzed using a multifractal detrended fluctuation analysis. Further to characterize the diversity of embedded patterns in the HD 73045 flux time series, we computed various entropy-based complexity measures e.g. sample entropy, spectral entropy and permutation entropy. The presence of periodic structure in the time series was further analyzed using the visibility network and horizontal visibility network model of the time series. The degree distributions in the two network models confirm such structures.