bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Impeller Trimming on Centrifugal Pump
Authors:   Institut Teknologi Sepuluh Nopember, Sutardi Sutardi , Adliansyah Ridwan
Published: April 2022

Pumps, especially centrifugal pumps, play an important role in engineering application, such as petroleum and petro-chemical industries, agricultural industries, portland cement industries etc. To obtain the best performance of the pumps, one has to operate the pumps at their design conditions. In some circumstances, however, the pumps must operate lower than their design conditions and result in the decrease in their performances. In such cases, it is possible to replace the pump impeller with the smaller impeller diameter or to cut its original impeller to smaller size as necessary. The cut of the impeller, or it is frequently referred to as impeller trimming, in some extence is preferable than replacing with new impeller or even by replacing with new pump with smaller head and capacity. In this study, we examine the effect of the pump impeller trimming to the pump performaces. The study was performed in the Fluid Mechanics Laboratory, Mechanical Engineering Department of ITS, Surabaya. The pump impellers were cut up to approximately 19 percent of its original pump impeller diameter, where the original pump impeller diameter is 129 mm. The pump has the maximum capacity of 100 liters/min and the total head of 31.5 m. The pump is powered by a 300 Watt electrical motor. Parameters to be studied in this research include pump capacity, pump head, pump power, and pump efficiency. The results of this study show that all data are in good agreement with the pump affinity laws. Pump capacity, pump head, and pump power decresase as the pump impeller diameter decreases. The pump efficiency is, however, in some extent, increases as the pump impeller diameter decreases. The maximum increase in pump efficiency is obtained when the ratio between the trimmed impeller to its original pump impeller diameter is approximately 89 percent (i.e. D2/D1 = 0.89), with the increase in pump efficiency of approximately 20 percent.
Perbandingan Kinerja Motor Bakar 6-Langkah dengan Power-Ekspansi sampai Titik Mati Bawah Menggunakan Bahan Bakar Pertalite dan Etanol
Authors:   Universitas Brawijaya, Ivana Reza Taufiqi , Siswanto Eko , Widhiyanuriyawan Denny
Published: April 2022

This paper describes compare the performance and emissions of a 6-stroke engine with power-expansion up to BDC (bottom dead center) using pertalite fuel (non-renewable) and 99.7% ethanol (renewable alternative) with performance parameters including (effective power , fuel consumption, Combustion Efficiency , thermal efficiency , fuel efficiency Â and emission parameters including (HC, CO and CO2). The method used is a real experimental method, with the independent variables being throttle openings of 35%, 40% , 45%, and 50% with loading on the prony disk brake of 10kg, 20kg, 30kg, 40kg, 50kg. The results of the research on the performance parameters of the magnitude of the effective power of ethanol is 17.5% less than pertalite, The rate of consumption of ethanol fuel 1,61 seconds/10ml lower than pertalite by 2,9 seconds/10ml, For the magnitude of the combustion efficiency (Combustion Efficiency) pertalite is 0.3% greater than ethanol, For the magnitude of the thermal efficiency p there is a 6-stroke engine with power-expansion up to BDC with ethanol fuel tends to be almost the same with 0.29% greater pertalite compared to ethanol, for the magnitude of pertalite fuel efficiency is 4% higher than ethanol. Then the emission parameters for the CO2 value of 80% pertalite tend to have a higher value than ethanol, the HC value is 21.7% higher in ethanol, for the higher CO2 content is dominated by 51.8% ethanol than pertalite.
Optimasi Rancangan dan Optimasi Proses Pemesinan Komponen Ventilator Indonesia (VENT-i)
Authors:   POLMAN Bandung, Setiawan Haris , Candra Addonis , Pratama Andri , Diratama Yazid
Published: April 2022

Sub-assy-manifold is one of the most significant components inside Vent-i (Indonesian ventilator). The production of sub-assy-manifold consists of two main processes that are assembly process and machining process. The assembly process of sub-assy-manifold is the longest one that takes 23.4 minutes in total compared to other components. The assembly process takes 1.4 minutes/pcs, and the body manifold machining process takes 22 minutes/pcs. Therefore, it is too hard to produce 1000 units of Vent-i per month. Making 1000 units/month can be achieved if the assembly process and the component machining process are at 10.43 minutes maximum in total. The purpose of this research is to reduce the assembly process time and machining process time of sub-assy-manifold. Itâ€™s begun with analyzing the current design of sub-assy-manifold using DFMA (Design for Manufacturing Assembly) to reduce the assembly processes time. The two-level full-factorial design experiment is used to find the optimum machining process time. The variables used in this experiment are the type of machine tools, hole toolpath strategy, and surface toolpath strategy. The result shows that assembly process time decreases to 43%, and the machining process time decreases to 63%, and it only takes 9.9 minutes to make sub-assy-manifold in total. With this result, it is possible to produce 1000 units/month Vent-i.
Rekayasa Desain Non Pneumatic Tire dengan Struktur Hexagonal Honeycombs
Authors:   Universitas Brawijaya, Wibowo Farit Hendro , Choiron Moch. Agus , Purnowidodo Anindito
Published: April 2022

Non-Pneumatic Tires (NPT) have been using in several sector since the wide application and following with advantages of the simplicity of maintenance. In this study, engineering design of NPTs is investigated with several different honeycomb spoke under static and explicit dynamic loading. The component of NPT with a hexagonal honeycomb type consisting of a hub wheel, outer ring, spokes, and tread. The six model of NPT is denoted with variation of thickness of the tread (20 and 30 mm) and thickness of the flexible spokes (3, 5 and 7 mm). Based on the computer simulation results, the B1 type NPT has a good ability to accept loads with deformation is 21,539 mm and the stress is 287,69 MPa.
Effect of Technical Modifications on the Fuel Consumption and Emission Level of Biodiesel-Diesel Blended (B30) Fuel Engine
Authors:   Universitas Sriwijaya, Komariah Leily Nurul , Salindra Erik , Ray Muhammad Akbar , Rendana Muhammad
Published: April 2022

The use of the mixed of biodiesel and diesel (BXX) will affect the performances of engines that are previously used for pure diesel. Therefore, this study was conducted to determine the appropriate technical modifications that can be applied in the B30-fueled generator set. Several modifications were carried out such as no modification (as a control), the addition of fuel preheater, the change of the injector nozzle specifications, and the combined modifications in the B30 fuel generator set. The results of the study revealed that the addition of fuel preheater reduced fuel consumption, CO emission around 20% and 7.6% respectively. In contrast, there was an increase of the output voltage by 0.7%. Moreover, the change of the injector nozzle specifications showedÂ a decrease in fuel consumption and output voltage around 7.92% and 2.2% respectively, but increase in CO emissions by 62.3%. The combined modification showed the reduction of fuel consumption and output voltage around 12.45% and 2.6%, respectively. However, the CO emission increased around 90%. In summary, the best modification for biodiesel-diesel blended (B30) fuel engine was found in the engine with the addition of preheater modification because it gives high fuel consumption but low emission level.
Pengaruh Fraksi Penguat Fly Ash dan Temperatur Cetakan terhadap Sifat Kekerasan dan Struktur Mikro pada MMC
Authors:   Universitas Brawijaya, Arrahim Muhammad Ghazali , Suprapto Wahyono , Gapsari Femiana
Published: April 2022

Metal Matrix Composite is a metal composite that utilizes an aluminum alloy as a matrix in its fabrication and has a wide application in industry. Fly ash is a coal-burning waste at the steam power plant that contains a high enough reinforcement fraction in the form of alumina (Al2O3) and silica (Si). Process of making specimens using an amplifier the powder metallurgy method. Fly ash as reinforcement was varied in powder mixing by 5%, 10%, 15%, 20%, and 25%. The compaction process is carried out with hot isostatic pressure so that the powder becomes softer and makes it easier to compact. Effect of heating temperature on the mold varied at 250oC, 300oC, and 350oC to obtain a homogeneous bond. In the research conducted, the results showed that the hardness value of the specimen increased by 1.7% by 65.07 HRB at 10% fly ash reinforcement variation, then continuously decreased to 16.92% with a hardness value of 55.64 HRB in the reinforcement variation. Fly ash 25%. The results of scanning electron microscope observations show that the influence of the heating temperature of the mold provides an even distribution of particles at a temperature of 300oC. bonded particles between the matrix and reinforcement are better and at temperatures of 250oC and 350oC shows an uneven distribution of reinforcing particles and results in agglomeration of reinforcing particles in the specimens are The resulting product is brittle and causes a decrease in hardness in the variation of the fraction with fly ash content above 10%.
Pengujian Tingkat Akurasi dan Error Dimensi Hasil Produk Mesin CNC Lathe Mini Custom
Authors:   Universitas Tanjungpura, Kurniawan Eddy , Syaifurrahman Syaifurrahman , Jekky Bong
Published: April 2022

Computer technology development has an impact on manufacturing technology development. CNC Lathe machine is a combination of computer technology and mechanical technology. This technology produces precision manufacturing products and fast processing times. Computer Numerical Control (CNC) is a machine controlled using a computer program to simplify the machine work process and make product results more uniform and acurates. A researcher makes this CNC Lathe machine from the Department of Mechanical Engineering Tanjungpura University Pontianak. It is named Small CNC Lathe machine with specifications, two axes (X and Z), and it has small dimensions to make it easier to move. This Small CNC Lathe Machine uses a spindle motor of 1 HP, 1500 rpm and a torque of 3.5 Nm, to move the X and Z axes using two stepper motors with a torque of 0.76 Nm for the X-axis and 1.2 Nm for the Z-axis. It has a motion limit of 215 mm for the X-axis and 75 mm for the Z-axis. This research was conducted to obtain the accuracy and error of the dimensional product made in this machine. The results of 16 workpieces with four different types of programs ware the average error percentage rate of 1.840%, so that it has an accuracy level of 98.160% for the X-axis and the average error percentage rate of 0,396% so that it has an accuracy level of 99.604% for Z-axis.
Analisis Parameter Proses Injeksi 3D Printed VeroWhite Plus Rapid Tooling Dengan Metode Design of Experiments
Authors:   Politeknik Manufaktur Bandung, Media Riona Ihsan , Ilyas Ismet P. , Qomarudin Mohammad
Published: April 2022

The insert cavity and core produced by the previous research were made using the polymer rapid tools (PRT) technique and will be used for the experimental production process. PRT is a technique for making tools with polymer materials using Additive Manufacturing (AM) technology. In this research, the polymer material used is VeroWhite Plus. The insert cavity and core will be tested to produce Â± 100 key chain products. The adjustment of the injection process parameters is sought through the simulation process to obtain low insert cavity and core temperature values so that the mold is not damaged at the beginning of the injection process. There are 5 parameters of the injection process that affect the optimal mold durability, namely: mold temperature, injection speed, injection pressure, hold pressure and cooling time. The analysis was carried out using the design of experiments (DOE) method to obtain the optimal combination of injection process parameters. Analysis of the DOE method based on software simulation obtained the optimal combination of injection process parameters with details (injection speed: 5 mm / s, injection pressure: 15 Mpa, holding pressure: 10 Mpa and cooling time: 100 seconds). The durability of the insert cavity and core produced by PRT is able to produce products as desired by 100 products or even more.
Morphology and Microstructure Properties of Nanozeolite Coating on Iron Foam With Variation of Calcination Temperature and Chitosan
Authors:   Indonesian Institute of Sciences, Puspasari Vinda , Paristiawan Permana Andi , Herbirowo Satrio , Adjiantoro Bintang
Published: April 2022

Porous materials are widely used in various applications such as ion exchange, separation, drug delivery sensor and water filter application. However porous iron is susceptible to corrosion, therefore coating with corrosion resistant materials is requirede.g. with nanozeolite material. For the application as filter, nanozeolite improves the activities characteristic of iron foam surface since it can act as the agent of ion exchangers and absorb heavy metal ions in water. In the present study, porous metal was coated with nanozeolite by sol-gel coating method. Chitosan concentrations and calcination temperatures are the variable parameter to be optimized in the present research. The mass change of the sample decreases as the chitosan addition increases. The mass change also decreases as the calcination temperature increases. The highest mass change occurs for sample 1 at 14.63%. The morphology of nanozeolite layer showed that the addition of chitosan can decrease the agglomeration of nanozeolite coating. The higher of calcination temperature can homogenize the nanozeolite layer. The particle form of nanozeolite through SEM revealed needle-like, rod and spherical shape. The addition of chitosan can decrease the cluster of nanozeolite particle and the higher of calcination temperature make them more uniform after calcination process. The XRD characterization of sample 5 showed that the nanozeolite particle in this sample was amorphous.
About Cyber police in the Russian Federation
Authors:   Iu.A. Gudkov Omsk State Transport University, Gudkov Iu.A. Gudkov , Nagornaya M.A. ,   M.A. Nagornaya Omsk State Transport University
Published: April 2022

The article discusses the issues related to the need to create a cyber police in Russia. The analysis of the criminal situation in Russia indicates the emergence of the problem of negative impacts of digitalization and information technologies on qualitative and quantitative changes in the structure and dynamics of crime against the background of the COVID-19 pandemic. Currently, it is necessary to create a unified state service for coordinating the fight against cybercrime in the country, cyber police, which should be designed to protect and protect the rights, freedoms and legitimate interests of citizens of the Russian Federation, legal entities, society and the state, as well as to counter cybercrime and ensure information security in cyberspace. It is concluded that cybercrime is a part of the general crime, its subsystem, which has its own specific qualitative characteristics, including its structure and its dynamics.
Actual problems of improving the mechanism of criminal law regulation of embezzlement with illegal penetration
Authors:   I.V. Kuryakov Ryazan branch of the Moscow University of the Ministry of Internal Affairs of Russia named after V.Ya. Kikot, Kuryakov I.V.
Published: April 2022

The article is devoted to the current problems of improving the mechanism of criminal regulation of theft, with illegal entry into a dwelling, premises or other storage facility. The author analyzes the many-sided criticism of the conflicting provisions of the Criminal Code, compares different points of view on the interpretation of the concepts of "dwelling", "premises", "structure", "storage". He proposes his own formulation of the qualifying feature of theft and substantiates the optimal solution to the problem under consideration, which consists in refusing to differentiate criminal liability depending on the place of seizure of property. In particular, it is noted that the public danger of theft is determined not by the place of seizure of property, but by the method of obtaining access to it. The author shows that the very concept of "illegal penetration" does not allow to give a proper legal assessment of the actions of persons who commit theft without penetration, but with overcoming obstacles to access to property, or pre-create conditions to facilitate access to it. Thus, in the article, the author reasons his point of view: the qualifying feature of theft, reflecting an increased rate of public danger of the method of committing a crime, should be overcoming means of protection, obstacles to access to property, or other premeditated creation of conditions that facilitate access to property.
Terror by franchise, or separation of the name from the bodies
Authors:   A.V. Rostokinsky School of Law of the Institute of Law and Management, State Autonomous Educational Institution of Higher Education, Moscow State Pedagogical University, Rostokinsky A.V. , Danelyan S.V. ,   S.V. Danelyan School of Law of the Institute of Law and Management, State Autonomous Educational Institution of Higher Education, Moscow State Pedagogical University
Published: April 2022

The article is devoted to the consideration of the current trend of interaction of international terrorist communities and organizations with lone terrorists who, on their own initiative, plan crimes at their location. The use of the Internet, social networks and messengers by these persons in terrorist activities, as well as the mutual interests of interacting subjects, is studied. The article analyzes the impact of international terrorists on their supporters in the following forms: agitation, propaganda and approval of terrorism, distribution of relevant extremist materials, involvement in the activities of existing terrorist cells and gangs, distance learning techniques and methods of conducting terrorist activities, up to leadership in the preparation of a specific crime by a certain person and the organization of "mosquito" attacks.
Problems of the implementation of the activities of a defender in criminal proceedings
Authors:   H.G. Datsieva Dagestan State University, Datsieva H.G.
Published: April 2022

In the article, the author notes that when carrying out the activities of a defense lawyer in criminal proceedings, various problems arise related to the imperfection of criminal procedural regulation and practical problems arising from non – compliance with the norms of the Criminal Procedure Code of the Russian Federation when conducting a preliminary investigation by officials. The article highlights the problem associated with the incomplete implementation of the principle of competition and equality of the parties, especially at the stage of preliminary investigation. Based on the results of the analysis, the author suggests changes in the criminal procedure procedure for attaching documents, materials collected by the defender as evidence during the preliminary investigation to the materials of the criminal case.
Electronic justice: problems and prospects for development in the Russian Federation
Authors:   K. K. Magomedova Dagestan State University, Magomedova K. K.
Published: April 2022

Today, in the conditions of active scientific and technological progress, more and more attention is paid to the development of information and communication technologies both at the global and at the state levels. Confirmation of these words is the Decree No. 204 signed by the President of the Russian Federation "On national goals and strategic objectives of the development of the Russian Federation for the period up to 2024".The main provisions of this decree are the acceleration of the technological development of the Russian Federation, through the introduction of digital technologies in various spheres of society, as well as the creation of a stable and secure information and telecommunication infrastructure for high-speed transmission, processing and storage of large amounts of data, available to allorganizations. The concept of “e-government” is gaining more and more importance, which includes many different aspects, among which e-justice is of particular importance. Electronic justice should be understood as justice carried out by special state bodies (courts) in a strictly prescribed procedural form with the use of information communication technologies in civil and arbitration processes, which allows procedural actions in electronic form, as well as electronic support of judicial activity. And in order to effectively apply all the possibilities of electronic justice in practice, the Civil Procedure Code of the Russian Federation, the Arbitration Procedure Code of the Russian Federation should spell out a mechanism for implementing electronic justice in civil cases.
Normative legal regulation of information support of the activities of the Ministry of Internal Affairs of Russia in the context of ensuring the right of citizens to information
Authors:   M.B. Molotkov East Siberian Institute of the Ministry of Internal Affairs of Russia, Molotkov M.B.
Published: April 2022

Achieving the goal of law, embodying the meaning of legislation, ensuring rights and freedoms, is carried out, inter alia, through the adoption of laws and the publication of bylaws. A significant role in this process is assigned to departmental rule-making. Through concretization in normative legal acts, rights and freedoms acquire certainty, acquire real existence. The right to information, as an essential human right, is no exception. Practical implementation, the implementation of the right to information in life, largely depends on the quality of departmental regulatory legal regulation. The article, using the example of the Ministry of Internal Affairs of Russia, reveals the nature of the normative legal regulation of informing the population by posting information on the Internet and in the media. The main normative documents governing the organization of interaction between the Russian police and the media, the procedure and issues of the content of the official website have been consistently analyzed. The study used methods of comparative analysis and synthesis, a formally logical, general scientific dialectical method. Based on the analysis of the normative legal acts of the Ministry of Internal Affairs of Russia in the field of mass media circulation, the practical significance of bylaws in the legal system of the Russian Federation, aimed at solving the problem of ensuring the right of citizens to information, is revealed. Departmental normative legal acts, regulating the activities of departments on interaction with the media and posting information on the Internet, are simultaneously aimed both at solving internal organizational problems and ensuring the right to receive information. Determining the main forms and topics of information messages, establishing the procedure for the circulation of information, the powers of officials, regulatory legal documents of the Ministry of Internal Affairs of Russia, allow you to obtain comprehensive, objective information about the activities of the internal affairs bodies.
The institution of the Commissioner for human rights as the main form of extrajudicial protection of human rights and freedoms: Russian and foreign experience of formation
Authors:   D.Sh. Pirbudagova Dagestan State University, Pirbudagova D.Sh. , Dyukareva A.S. ,   A.S. Dyukareva Dagestan State University
Published: April 2022

The article is devoted to the problems of formation and activity of the institute of the Commissioner for Human Rights in the Russian Federation and some foreign countries. The authors used a comparative approach to identifying the essence of the functioning of the ombudsman institution. Attention is focused on the gradual transformation of the institution of the Commissioner for Human Rights along the path of its functional specialization. At the same time, this institution remains the main form of non-judicial protection of human rights and freedoms, since its activities contribute to complementing the existing means of protecting the rights, freedoms and legitimate interests of a person and a citizen, does not cancel and does not entail a revision of the competence of state authorities and their officials ensuring the protection and restoration of violated rights, freedoms and legitimate interests of a person and a citizen. The result of the study is the formulation of conclusions about whether it is advisable to build a system of bodies for the protection of individual rights and freedoms in the sphere of joint jurisdiction of Russia and its subjects
Problems of definition budgetary federalism in the Russian Federation
Authors:   N.M. Ataeva Dagestan State University, Ataeva N.M.
Published: April 2022

The researching of budget legal relation’s problems in Russian Federation and definition of budgetary federalismareaim of the article. Author researches different scientific opinions in this sphere. While investigating given abstracts, author also reviews and defines essence and contest of such phenomenon as budget federalism. Writing the article author uses different scientific methods, such as dialectical, logical, formal and legal, analysis and synthesis. In conclusion, author gave her own term of budget federalism in the Russian Federation.
Features of the implementation of the modern state policy of Russia in the field of health
Authors:   A.Z. Arslanbekova Dagestan State University, Arslanbekova A.Z.
Published: April 2022

Health care is important social importance, so much attention is paid to the problems of its development. Modern medicine fulfills the tasks of strengthening public and individual health: its protection, the provision of professional medical and medical and social assistance to people. In the context of the dissemination of corona infection by state and municipal authorities, measures are taken to reduce the incidence, preventing the dissemination of the epidemic, supporting the healthy lifestyle of people, promoting health promotion. Medical practice and scientific medicine are currently developing together, mutually complementing each other. In the article, the author analyzed the main problems faced with a modern health system, and prepared proposals for improving the activities of state and municipal authorities that ensure the functioning of the health system. When writing the article, the following research methods were used: logical, formal legal, method of legal modeling and analysis. In conclusion, it is concluded that health care is one of the priority components of the social sphere, which should always be interested in the state, since the negative phenomena occurring in this industry is experiencing every citizen. The main task of health care is to preserve and restore human health and is implemented by measures aimed at reducing the incidence and mortality, which in turn should lead to an increase in the welfare of citizens. Only the state through the use of administrative, legal and economic mechanisms is able to influence the situation, therefore the role of the state is leading in the field of health management.
Problems of legal education and ensuring the quality of training of lawyers in the regional vision
Authors:   A. M. Murtazaliev Dagestan State University, Murtazaliev A. M.
Published: April 2022

The article analyzes the most pressing problems of further improvement of legal education and the practice of training lawyers in regional conditions, taking into account the general paradigm of education development in the modern Russian Federation. The author analyzes the main provisions of the educational policy and legislation of Russia related to the implementation of the constitutional right of citizens to education, and against the background of the general problems of the modern education system characterizes the general theoretical and organizational and legal issues of the implementation of educational activities for the training of lawyers in universities, taking into account regional conditions and needs. The proposals are formulated for further improvement of the theoretical foundations of legal education for the training of lawyers related to the study of the national legal system of Russia and the regional characteristics of its constituent elements of the legal systems of the subjects of the Russian Federation, as well as for the organization of the educational process and the restoration of the specialty as the most reasonable form of training lawyers in domestic practice.
Stigmatizing Attitudes Across Cybersuicides and Offline Suicides: Content Analysis of Sina Weibo
Authors: Li Ang , Jiao Dongdong , Zhu Tingshao
Published: April 2022

Background

The new reality of cybersuicide raises challenges to ideologies about the traditional form of suicide that does not involve the internet (offline suicide), which may lead to changes in audience’s attitudes. However, knowledge on whether stigmatizing attitudes differ between cybersuicides and offline suicides remains limited.

Objective

This study aims to consider livestreamed suicide as a typical representative of cybersuicide and use social media data (Sina Weibo) to investigate the differences in stigmatizing attitudes across cybersuicides and offline suicides in terms of attitude types and linguistic characteristics.

Methods

A total of 4393 cybersuicide-related and 2843 offline suicide-related Weibo posts were collected and analyzed. First, human coders were recruited and trained to perform a content analysis on the collected posts to determine whether each of them reflected stigma. Second, a text analysis tool was used to automatically extract a number of psycholinguistic features from each post. Subsequently, based on the selected features, a series of classification models were constructed for different purposes: differentiating the general stigma of cybersuicide from that of offline suicide and differentiating the negative stereotypes of cybersuicide from that of offline suicide.

Results

In terms of attitude types, cybersuicide was observed to carry more stigma than offline suicide (χ21=179.8; P<.001). Between cybersuicides and offline suicides, there were significant differences in the proportion of posts associated with five different negative stereotypes, including stupid and shallow (χ21=28.9; P<.001), false representation (χ21=144.4; P<.001), weak and pathetic (χ21=20.4; P<.001), glorified and normalized (χ21=177.6; P<.001), and immoral (χ21=11.8; P=.001). Similar results were also found for different genders and regions. In terms of linguistic characteristics, the F-measure values of the classification models ranged from 0.81 to 0.85.

Conclusions

The way people perceive cybersuicide differs from how they perceive offline suicide. The results of this study have implications for reducing the stigma against suicide.
eConsults to improve access to the hospital pharmacist: A retrospective cross-sectional descriptive study of five years of experience (Preprint)
Authors: Weinberg Vera , van Haren Eva , Gombert-Handoko Kim B
Published: April 2022

BACKGROUND

Patients often have questions about their medication. When medication is started during hospital admission or an outpatient visit, community pharmacists are not always informed enough to answer these questions. Therefore direct contact with hospital pharmacists may be more appropriate and efficient. This contact is facilitated through the eConsult function in the Hospitals Patient Portal.

OBJECTIVE

This study is aimed to evaluate the prevalence and contents of the eConsults sent by patients to hospital pharmacists.

METHODS

A retrospective cross-sectional descriptive study was conducted at the Leiden university medical center in the Netherlands (the LUMC). Patients who sent at least one eConsult to a hospital pharmacist between March 2017 and December 2021 were included. Patient characteristics and the number of medications used were extracted from medical records. Furthermore, time of sending and the subject of the eConsults were analyzed. Finally, the appropriateness for evaluation by the hospital pharmacist was assessed of all eConsults.

RESULTS

During the study period 983 eConsults (involving 808 patients) were sent by patients to the hospital pharmacist. The average age of the patients was 56 years (sd=15.9) and 415 patients (51.4%) were male. 386 patients (47.8%) used 0 to 5 medications; 267 (33.0%) used 5 to 10 medications and 155 (19.2%) used ≥ 10 medications. Of the eConsults, 107/983 (10.9%) were excluded due to not being medication-related or not intended for the hospital pharmacist. Patients under treatment by 31 different medical specialties sent eConsults to the hospital pharmacist. The most common medical specialty was cardiology with 197 eConsults (22.5%). Most eConsults were sent during office hours (n= 614, 70.2%). eConsults concerned: Medication verification (n= 372, 42.5%), logistics (n= 243, 27.7%), therapeutic effect and adverse events (n= 100, 11.4%), use of medication (n= 87, 9.9%) and other subjects (n= 74, 8.4%).

CONCLUSIONS

Introducing eConsults facilitates patients to ask medication-related questions to hospital pharmacists directly. In this way, using the Hospital’s Patient Portal, electronic communication can improve medical care and patient health.

Practice implications
Introducing eConsults can offer a promising tool to improve access to the hospital pharmacist.

CLINICALTRIAL

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The Role of Non-governmental Organisations Acting as Amicus Curiae in WTO
Authors: Yan Shuping
Published: April 2022

WTO dispute settlement mechanism is a closed system, however, the non-governmental organisations acting as amicus curiae in WTO plays an alternative way in the external aspect. There are different opinions about the intervention of amicus curiae, we should take active measures to face amicus curiae.
Representing and Analyzing the Dynamics of an Agent-Based Adaptive Social Network Model with Partial Integro-Differential Equations
Authors:   Binghamton University, Sayama Hiroki
Published: April 2022

We formulated and analyzed a set of partial integro-differential equations that capture the dynamics of our adaptive network model of social fragmentation involving behavioral diversity of agents. Previous results showed that, if the agents’ cultural tolerance levels were diversified, the social network could remain connected while maintaining cultural diversity. Here we converted the original agent-based model into a continuous equation-based one so we can gain more theoretical insight into the model dynamics. We restricted the node states to 1-D continuous values and assumed the network size was very large. As a result, we represented the whole system as a set of partial integro-differential equations about two continuous functions: population density and connection density. These functions are defined over both the state and the cultural tolerance of nodes. We conducted numerical integration of the developed equations using a custom-made integrator implemented in Julia. The results obtained were consistent with the simulations of the original agent-based adaptive social network model we previously reported, confirming the robustness of the original finding. Specifically, when the variance of cultural tolerance d is large enough, the population with low d maintains the original clusters of cultures/opinions, while the one with high d tends to come to the center and connect culturally distant groups. Parameter dependence of the model behavior was also revealed through systematic numerical experiments.
NEW ALTITUDINAL RECORD OF Heloderma horridum (WIEGMANN, 1829) (SQUAMATA: HELODERMATIDAE)
Authors: Arenas Moreno Diego Miguel , Bautista del Moral Adán , Brindis Badillo David Alejandro
Published: April 2022

Heloderma horridum (Beaded Lizard) is a venomous lizard of large size distributed along the Pacific Coast of Mexico from Sinaloa to Chiapas, and in lowlands of the states of Estado de México, Morelos and Puebla (Reiserer et al., 2013). This lizard inhabits mostly in tropical dry forest at lowlands; however, it occasionally occurs in temperate habitats at high elevation up 1800 m (Guadarrama et al., 2019).  In this study, we extend the altitudinal range of H. horridum in more than 200 m elevation.
FIRST VERIFIED RECORD OF Thamnophis validus (SQUAMATA: NATRICIDAE) FROM OAXACA, MEXICO
Authors: Arrazola Bohórquez Rodrigo , Palacios Aguilar Ricardo
Published: April 2022

We report for the first time the West Coast Garter Snake (Thamnophis validus) for the state of Oaxaca, Mexico. This new record extends the known distribution of the species in over 360 kilometers and represents the southernmost record of its range. Several new records of rare or endemic species of snakes, like the one reported herein, have been obtained from the Pacific Coast in recent years suggesting that the region remains incompletely explored.
Congruencia de los estándares para evaluar la calidad de la educación médica en México
Authors: Rillo Arturo G. , Martínez-Carrillo Beatriz Eliana , Conteras-Mayén Ramón Gustavo , Valdéz-Ramos Roxana , Castillo-Cardiel José Arturo
Published: April 2022

Introducción: Se han realizado 4 revisiones al instrumento de autoevaluación utilizado en la acreditación de la educación médica en México. La actualización de los estándares en 2018 generó reflexiones en las escuelas de medicina, lo que otorgó relevancia a la siguiente pregunta: ¿los estándares para evaluar la calidad de la educación médica en México, tienen congruencia estructural en el instrumento de autoevaluación 2018 utilizado por el Consejo Mexicano para la Acreditación de la Educación Médica (COMAEM)?Objetivo: Analizar la congruencia estructural entre los estándares utilizados para evaluar la calidad de la educación médica en México por el COMAEM.Método: Se realizó un estudio cualitativo y documental, desde el enfoque interpretativo basado en la hermenéutica gadameriana y la técnica de Morganov-Heredia. Se llevaron a cabo 4 etapas. Se construyeron matrices binarias y el grafo correspondiente de los 7 apartados del instrumento de autoevaluación y los 74 estándares básicos de acreditación. Las categorías de análisis del estudio fueron: orientación institucional, plan de estudios, alumnos, profesores, evaluación, vinculación institucional, administración y recursos.Resultados: El análisis de congruencia inter-apartados mostró al apartado 1 como apartado fuente y los apartados 5, 6 y 7 como apartados cima; en este nivel de análisis la congruencia inter-apartados fue del 100%. En el análisis intra-apartado se identificaron 9 (12.16%) estándares aislados, 14 (18.92%) estándares fuente, 37 estándares intermedios (50%), 14 (18.92%) estándares cima y 183 secuencias antecedente-consecuente. Se construyeron 2 grafos completos y 11 subgrafos que formaron 3 grafos conexos (apartados 2, 5 y 7) y 2 grafos inconexos (apartados 1 y 4). La congruencia intra-apartados fue de 87.84%.Conclusiones: Los estándares utilizados por el COMAEM son estructuralmente congruentes en el instrumento de autoevaluación 2018 para evaluar la calidad de la educación médica.
Adaptación y validación de un instrumento para evaluar los estereotipos negativos de la vejez
Authors: Gonzalez-Salas Isabel Cristina , Juárez-Hernández Luis Gibran , Gámez-Mier Carlos Humberto
Published: April 2022

Introducción: Los instrumentos para la identificación de estereotipos negativos de la vejez son abundantes; sin embargo, la mayoría proceden de otras regiones o contextos y se aplican sin efectuar un proceso de adaptación y validación.Objetivo: Se realizó la adaptación del instrumento cuestionario de estereotipos negativos hacia la vejez (CENVE) para el contexto de estudiantes mexicanos de medicina.Método: Para su adaptación se realizó una revisión a detalle de la terminología y aspectos gramaticales de los ítems, posterior a esta fase, el instrumento fue revisado por cinco expertos con el objetivo de determinar la pertenencia y relevancia de los ítems. Al concluir esta fase, el instrumento se sometió a juicio de once expertos para analizar su validez de contenido. Finalmente, para evaluar la adecuación del instrumento al grupo objetivo, se realizó un estudio piloto con 34 estudiantes de medicina.Resultados: Los expertos avalaron la pertenencia y relevancia de los ítems y, acorde a sus sugerencias, se realizaron mejoras en la redacción de los ítems. En el juicio de expertos, todos los ítems fueron validados en contenido (V de Aiken >0.75; VI >0.50). La percepción del grupo piloto respecto a la comprensión de las instrucciones e ítems fue de excelente grado. La confiabilidad en esta aplicación fue favorable (alfa de Cronbach: 0.847; IC al 95%: 0.760 ± 0.913).Conclusiones: Se presenta la adaptación de un instrumento para evaluar los estereotipos negativos hacia la vejez para el contexto mexicano, el cual se comprobó mediante un proceso de validación que posee validez de contenido.
Propiedades Psicométricas del Test de Empatía Cognitiva y Afectiva (TECA) en Población Mexicana
Authors: Chavira Trujillo Gabriel , Celis de la Rosa Alfredo
Published: April 2022

Introducción: Evaluar la empatía es cada vez más necesario dentro de diferentes áreas de investigación. Objetivo: El presente estudio presenta un análisis de las propiedades psicométricas del cuestionario Test de Empatía Cognitiva y Afectiva (TECA) que evalúa la empatía desde una perspectiva integral; siendo uno de los pocos construidos originalmente en el lenguaje español. Método: Sé evaluó la fiabilidad y validez de constructo en 607 adultos (137 hombres/ 470 mujeres) estudiantes de población mexicana. Resultados: Los resultados muestran una adecuada fiabilidad del instrumento en general (α = .86).  Sin embargo, los análisis factoriales exploratorios y confirmatorios sugiere la necesidad de revisar los ítems. Discusión: La incorporación de metodologías robustas que consideran  la naturaleza ordinal de las escalas Likert, como el análisis factorial con la incorporación del intercepto aleatorio permiten mejorar el ajuste de los modelos sin alterar la estructura factorial original. Por último, la invariancia métrica no es alcanzada entre la muestra española original y la mexicana. Conclusiones: El TECA se puede aplicar en población mexicana pero se sugiere una revisión en la construcción de los ítems.
El Mantenimiento en las Relaciones de Pareja: Una forma de Medirlo
Authors: Rivera Aragón Sofía , Villanueva Orozco Gerardo Benjamín Tonatiuh , Jaen Cortés Claudia Ivethe , Velasco Matus Pedro Wolfgang , Villanueva Ramírez Ruth Itzel
Published: April 2022

El presente estudio tuvo como objetivo conocer la estructura factorial de la escala de mantenimiento en las relaciones de pareja en hombres y mujeres. Participaron de manera voluntaria y confidencial de 731 voluntarios (49.8% hombres y 50.2% mujeres). Se elaboró una escala de 178 reactivos, para evaluar el mantenimiento de las relaciones de pareja con base en un estudio exploratorio, con un formato de respuesta tipo Likert de 5 puntos. Esta consta de cuatro subescalas: Significado (46 reactivos y 6 factores), Motivos (30 reactivos y cuatro factores), Estrategias (46 reactivos y 6 factores) y Consecuencias (56 reactivos y 4 factores). Para cada subescala se obtuvo el análisis psicométrico. Los resultados indican una escala valida y confiable en sus cuatro subescalas, a través de análisis factoriales exploratorios y análisis de consistencia interna. Los hallazgos permiten contar con un instrumento robusto que permite evaluar en sus diferentes subescalas las áreas que componen el mantenimiento. Esto con la finalidad de realizar evaluaciones en las relaciones diádicas que fomenten parejas saludables, así como intervenciones, basadas en esta primera aproximación.
La complejidad y el desarrollo económico de América Latina, 1995-2018
Authors: Cervantes Rosario , Villaseñor Becerra Jorge Ignacio
Published: April 2022

Se analiza el comportamiento del indicador Economic Fitness como medida de la competitividad internacional de las economías de América Latina y su relación con las brechas de ingreso per cápita y el Índice de Desarrollo Humano (IDH). Se encontraron correlaciones positivas entre las brechas de ingreso por persona y el estancamiento de la competitividad internacional de las economías latinoamericanas, así como entre los niveles de desarrollo humano y la estructura productiva, suponiendo una relación de causalidad que va del desarrollo humano hacia la competitividad. También se muestra que la estimación del indicador a partir de las exportaciones en valor agregado interno cambia de manera significativa, lo que sugiere que la estimación original puede sobre o subestimar la competitividad.
Exportaciones versus acumulación de capital en Argentina, Brasil, Chile y México
Authors: Vázquez Muñoz Juan Alberto , Zavaleta González Josué
Published: April 2022

En el presente artículo se realiza un análisis de la importancia relativa de las exportaciones y la acumulación de capital en el comportamiento de la tasa de crecimiento de Argentina, Chile y México para el periodo 1961-2019, y de Brasil para el periodo 1971-2019. Se ofrece evidencia de que la acumulación de capital tiene un efecto positivo y significativo en la tasa de crecimiento, mientras que el correspondiente a las exportaciones es significativo, aunque de baja magnitud. Asimismo, las exportaciones reducen la restricción externa al crecimiento en una medida poco relevante en comparación con la acumulación de capital. Se postula entonces la necesidad de cambiar el modelo de crecimiento exportador por uno centrado en la acumulación de capital.
Chomsky's Transformational Linguistic Theory in Writing Skill at Islamic Senior High School: Transforming Language Learning Pedagogy
Authors: Wargadinata Wildana , Risalah Lisa Khillatur , Elmi Ulul , Maimunah Iffat , Yan Mei Suo
Published: April 2022

This research aimed to determine the implementation's effectiveness as supporting and inhibiting factors of Chomsky's Transformational Linguistic Theory in Writing Skill implementation. The data were collected through interviews, observations, and tests. The results of this study are: 1) the researchers obtained the difference in scores between the pretest and posttest of the control class and the experimental class. 2) there were five supporting factors and three inhibiting factors in learning maharah kitabah at MA Muallimat Malang Indonesia. The supporting factors are: 1) the transformation of sentences is easy to understand, 2) students have the ability of basic Arabic rules, 3) students can write Arabic, 4) enthusiasm in participating in learning activities, 5) availability of sufficient media for learning. Meanwhile, the inhibiting factors are: 1) the difficulty of students distinguishing mudzakkar and muannats,2) only a few materials limits transformation, 3) some students do not like to learn Arabic.