bluuebunny/crossref_metadata_2025 huggingface dataset:
Bed Bunk Accommodation; Convergence of Online Promotion Media with Balinese Traditional Houses in Canggu Village, Bali
Authors: Nurjani Ni Putu Suda , Paturusi Syamsul Alam , Dwijendra Ngakan Ketut Acwin , Putra I Dewa Gede Agung Diasana
Published: October 2020

Bali is one of the most popular tourism destinations in the world with various forms of accommodation. Start from five star hotels until small lodgings built in each community residential unit. The strong custom and restrictions on tall buildings in Bali, making people look for various new alternatives to develop accommodation. The existence of local regulations that require the use of traditional Balinese ornamentation, requires accommodation owners to find adaptive accommodation development methods. However, with the development of the digital industry 4.0 specifically in contact with online advertising, there are no official rules in Bali that regulate it. This condition makes the demand for cheap accommodation in Bali seem unlimited. The promotion system no longer requires government legality. This phenomenon makes accommodations in remote places even can be accessed easily by all people in the world. The community then competes with each other to build cheap accommodations in their traditional homes. The government also cannot touch the spatial development caused by online media demand, due to the absence of regulations that limit it. This research tries to identify the bed bunk phenomenon that is built and operationalized through online promotion media, and has no legality. Data collection was carried out by direct observation of the object of study in Canggu village, district of North Kuta, Badung Regency, Bali Province. The findings of this study indicate that, bed bunk was born in Bali due to the high demand for backpacker tourists which is sufficient with wifi, table and bed facilities. The high cost of land in Bali encourages local people to build accommodations in their residential units. The maximum utilization of the interior (construction of 6-8 beds in one room) is the most preferred choice. This condition is due to vertical building restrictions that cannot exceed 15m and economic factors (get maximum income on narrow land). This finding is expected to be used as an evaluation material for spatial improvement in Bali which has an impact on congestion throughout the tourist area due to uncontrolled accommodation development.
Determination and Measurement of Color Dissimilarity
Authors: Karma I Gede Made
Published: October 2020

There are millions of different colors that exist in this nature. There are colors that can easily be distinguished from other colors, but many are also difficult to distinguish. The ability to distinguish colors is important in the recognition of an object, especially objects in an image. Color can be represented in a three-dimensional RGB color space and each color will have an RGB value with a range of values ??from 0-255. Conceptually, colors with different RGB values ??are different colors, but the human eye may not necessarily be able to distinguish them. This study aims to determine and measure the color dissimilarity that can be distinguished by humans. With an experiment comparing a color with a color made with a variation of RGB values, this study resulted that two colors that have a Delta E (?E) value of 8 can be distinguished by the eye. This result is obtained if both colors have a value of ?R, ?G or ?B of at least 8, or a value of ?RG, ?RB or ?GB of at least 6, or a value of ?RGB of at least 5.
PEMANTAUAN SEDIMENTASI MENGGUNAKAN DATA BATIMETRI HIGH FRECUENCY DI PERAIRAN SAYUNG, DEMAK-JAWA TENGAH
Authors: Ondara Koko , Rahmawan Guntur Adhi
Published: October 2020

Kecamatan Sayung merupakan wilayah terabrasi di Kabupaten Demak yang terkena dampak paling parah dari kenaikan muka air laut di kawasan Pantai Utara Jawa. Perencanaan untuk pembuatan struktur pelindung pantai kawasan pesisir Sayung, Demak, Jawa Tengah sebagai salah satu solusi dalam mengendalikan dampak abrasi yang terjadi memerlukan penelitian batimetri (kedalaman perairan laut) untuk memantau besarnya sedimentasi yang ada di perairan laut tersebut. Tujuan dari penelitian ini adalah untuk mengetahui kedalaman perairan, volume sedimen, kemiringan topografi dasar perairan serta ketebalan sedimen dasar perairan. Penelitian ini dilakukan pada tahun 2016 dan tahun 2018. Data batimetri diperoleh dengan pengukuran langsung di lapangan pada tahun 2016 dan 2018. Data tersebut diperoleh menggunakan echosounder dual frekuensi. Kemudian data tersebut dikoreksi terhadap pasut lalu dihitung tebal sedimen yang diperoleh menggunakan pemodelan numerik. Hasil analisis proses sedimentasi yang terjadi di dasar perairan menunjukkan adanya penambahan ketebalan sedimen sebesar 0.32 m dengan pertambahan volume sedimen sebesar 1.181.731,38 m3.
COASTAL VULNERABILITY ASSESMENT OF TOURISM AREA AND MANAGEMENT STRATEGY FOR SUSTAINABLE ENVIRONMENTAL RESILIENCE: CASE OF MANDEH COAST, WEST SUMATERA
Authors: GEMILANG WISNU ARYA , WISHA ULUNG JANTAMA , DHIAUDDIN RUZANA
Published: October 2020

Mandeh area located in Pesisir Selatan Regency is a beautiful coastal bay that is why the local governments focus on its tourism development. However, this coastal bay region is potentially affected by the disaster, thus sustainable coastal management is essential to be applied. To assess the vulnerability of Mandeh Bay, CVI method and the Smartline mapping approach are utilized by applying several physical parameters. The aforementioned parameters encompassed beach materials, wave exposure, hinterland formation, berm features, beach-face features, coastline changes, and land-use patterns. The results show that several regions within Mandeh Bay categorized into very low vulnerability 10%, low vulnerability 27%, moderate vulnerability 18%, high vulnerability 31%, and very high vulnerability 14%, respectively. Most of the northern coastal areas of the XI Koto Tarusan Sub-District predominated by the high vulnerability. Therefore, the development of coastal building in the forms of hard and soft structures, as well as the establishment of regional regulation regarding coastal zone utilization to prevent further environmental degradations and coastal hazards are necessary as a part of coastal management of this study area.
Em louvor das impurezas na historiografia da arte
Authors: Restivo Maria Manuela
Published: October 2020

O presente artigo foca-se nas investigações de Ernesto de Sousa (1921-1988), artista e teórico da arte, em torno da escultura portuguesa. Argumenta-se que a pesquisa que realizou, quer pelas vertentes em que se desenrolou quer pelas metodologias utilizadas, apresenta ecos warburguianos evidentes e, consequentemente, deve ser inserida numa historiografia da arte alternativa, que aqui se conceptualiza através do conceito de impurezas. Desenvolvendo um modo distinto de perspetivar a arte portuguesa, baseado quer numa diferente perceção do tempo histórico quer no nivelamento entre arte popular e arte erudita, Ernesto de Sousa inaugura um novo caminho na historiografia artística portuguesa.
Development and Validation of Poksd-Porsd Protocol Assessment of Engineering in Elementary Classroom
Authors: Anwar C , Sopandi W , Sa’ud U S , Pratiwi W T , Inderawan H
Published: October 2020

The aim of this study was to develop and validate classroom observation instruments designed to reveal the emergence of engineering activities in primary school teachers in project-based learning. The instruments developed included the elementary school classroom observation protocol sheet (POKSD) and the elementary school engineering observation protocol assessment (PORSD). Task items were arranged based on indicators adapted from COPUS (Classroom Observation Protocol for Undergraduate STEM) items. The initial design of the instrument was consulted with three experts based on learning objectives. The instrument was then validated by three experts in the field of basic education. The instrument test was conducted on teachers and 5th-grade students of UPI Bandung Laboratory (N = 1). POKSD and PORSD were assessed by three raters. Scores from the three raters were then analyzed using two-way ANOVA. The results showed that the intra-class correlation of performance assessment instruments was adequate (ICC = 0.773). The findings of this study demonstrated that the instrument was reliable and could be used for the emergence of engineering activities in elementary school teachers.
Study Result of Straight Motion Through Worksheet Based on Guided Note Taking (GNT) by Setting Guided Inquiry Learning to Students X Class in Senior High School of Jember
Authors: Mahardika I K , Oktaviani I Gusti Kadek Dwi Septi , Harijanto A
Published: October 2020

This research aims to influence the result of student learning about the straight motion and describe the science process skills of students for learning with setting by guided inquiry model with a worksheet based on Guided Note Taking (GNT). The kind of research was an experiment by randomized post-test only control group design. The population of this research is a class X IPA SMA Negeri Mumbulsari. Based on the results of the analysis science process skills of students in the class experiment can be described as very good with reaching an average value of 81,17%. Next up is an analysis of knowledge students' competence obtained the average value of knowledge students competence on the class experiment of 75,70 and grade control of 70,00. So it can be concluded that the guided inquiry model with a worksheet based on GNT influences the results of the cognitive learning of physics in learning about the motion straight in SMA Negeri Mumbulsari.
STEM-CP (Science, Technology, Engineering, Mathematics, and Contextual Problem) Based Colloid Textbook to Increase Creative Thinking Skill for Chemistry Learning in Senior High School
Authors: Hasanah N , Sutarto Sutarto , Nuriman Nuriman , Budiarso A S
Published: October 2020

The colloid is a chemistry subject matter which is closely related to our daily life. Most of the teachers apply colloidal learning in their classroom only by requiring the students to read and memorize. It gives fewer opportunities for the students to think creatively and they also lack understanding the benefits of learning colloidal subjects. This study aimed to apply Colloid textbooks based on STEM-Cp (Science, Technology, Engineering, Mathematics, and Contextual problems) to train creative thinking skills for chemistry learning in senior high school. This research used the Quasi Pretest-Posttest experiment without the control class. The research instrument used was a test of creative thinking skills. The effectiveness of textbook shown that each component of creative thinking, such as fluency, flexibility, elaboration and originality thinking gets a percentage of 89.20%, 86.31%, 80, 98%, 80.09% and N-gain score of students get value ≥ 0.7 which is 72.22% of students in the high category and 27.78% of students in the medium category.
An Exploratory Study on Implementation of Online Learning by Students During the COVID-19 Pandemic
Authors: Nugroho Wahyu , Malinda Elma Rosalia , Mustika Rani Maulika Junia , Basori Basori
Published: October 2020

COVID-19 was announced as a pandemic. Indonesia has been applying online learning as an attempt to break the COVID-19 spread-chain. The purpose of this study was to identify the implementation of online learning by students during the COVID-19 pandemic. The research used qualitative research with a literature study method. Data analysis was performed by triangulating data sources. Based on the results of an analysis of the implementation online learning at university level, it is known that there are students who strongly support the implementation of online learning and students who do not have enthusiasm for online learning. Student enthusiasm is influenced by technical and non-technical factors which some aspects can become an obstacle. Several solutions can be done to solve the weakness of online learning. Implementation of online learning still has advantages and disadvantages that should be able to be evaluated by the government.
SMART CP (Simulation Methods Analysis Rule Tech Chemistry Profession) Company and Android Application in Three Areas Regular Work for Future Solution to Decrease Unemployment and Develop Human Resources
Authors: Saifullah Ahmad , Aras Ahmad Kamrullah , Yuliana Yuliana
Published: October 2020

Unemployment is one of the main employment challenges that challenge developing countries, including Indonesia. (Muslim,2014). There are many competent human resources but many are unemployed, this is because there are some fraudulent parties or their reach is very difficult. SMART CP is a Company and application designed specifically in the field of chemistry, it places one's work in one of the fields they will choose from 3 Chemistry jobs provided by SMART CP (Teachers, Analysts / Labs, and Entrepreneurs) This application has been created to decrease unemployment and develop Human Resources. The research methods used are qualitative and quantitative as well as additions to the research methods. some purpose of this Application first is, to develop students' online learning media, to facilitate teaching staff in the bookkeeping of teacher learning devices, to obtain information directly vertically from the Ministry of Education and Culture.
The Development of Students’ Worksheet Based on Inquiry Integrated by Youtube Video As The Alternative Of Teaching Materials During The Covid-19 Pandemic Period
Authors: Raysha Aurora Ade , Shafira Nurrizki , Rizky Auliana
Published: October 2020

This research aims to develop students' worksheets based on inquiry integrated by Youtube Video. This is Research and Development (R&D) with the ADDIE model where 50 active students from the Faculty of Teacher Training and Education of Universitas Syiah Kuala involved at the implementation stage. The results showed that the average percentage of students' worksheets validated by the 3 validators was 92% could be categorized as very valid to be used. Questionnaire results showed 92% of students agree that the students' worksheets developed help with learning during COVID-19, 98% agree the students' worksheets help students to study independently, and 96% agree that they easily understand the material presented. Based on the results of validation and students' questionnaire response, it can be concluded that the students' worksheets based on inquiry integrated by youtube videos are feasible to be used the alternative of teaching materials for online learning during the COVID-19 pandemic
Factors Underlying Teacher Absenteeism in Selected Schools Located in Tshwane West District, South Africa
Authors: Mashaba Ernest Khalabai , Maile Simeon
Published: October 2020

Teacher absenteeism is widely recognised as a serious problem, particularly in disadvantaged areas, yet there is little systematic research and data on teacher absence in developing nations. Generally, literature discusses the phenomenon of teacher absenteeism on the basis of high-income countries and low-income countries. The current research argues that the reasons for teacher absenteeism in developed nations are largely personal matters related to the individual and the rate of absence is relatively low. In this study we argue that while teachersâ€™ absence is a matter that concerns the individual, there are institutional (school), structural (social environment) and economic factors that impact on the extent of teacher absenteeism in low-income countries. The purpose of the study is to investigate factors underlying teacher absence in disadvantaged communities. We investigated the phenomenon of teacher absenteeism in three (nâ€“3) selected schools in the District of Tshwane West (D15) located in Soshanguve, Gauteng Province, South Africa. Soshanguve is a township with a predominantly disadvantaged community which depends on the public schooling system and probably has limited access to private education. The study used qualitative methods and data was collected through semi-structured interviews. The findings reveal that the schools are ineffective in curbing and reducing teacher absenteeism due to insufficient policy measures. The problem of teacher absenteeism is rampant and manifests in many forms. The leave policy seems to be effective in curbing the wage bill for substitute teachers, but at the same time it appears to grossly contribute to the damaging effects of absenteeism on educational outcomes. We recommend that costs in implementing the policy need to be balanced against the effectiveness of the policy. Reducing teacher absenteeism implies reducing the monetary cost of teacher absence and improving the education outcomes of learners. This ensures that the relationship between inputs (education investment) and outputs (learner performance) is optimal. We conclude that improving teacher attendance will thus increase productivity in schools.
Career Satisfaction of Professional Women:
Authors: Coetzee Melinde , Takawira Ndayiziveyi
Published: October 2020

Women’s career development is seen to be complex, and more research is needed to gain more knowledge about the psychosocial factors that influence the career satisfaction of professional women. The current research explored the interplay between career adaptability and psychosocial career preoccupations to explain the variance in levels of career satisfaction. Data were collected from a random sample (N = 576) of professional women in scarce skills fields in the South African organisational context. Hierarchical moderated regression analysis indicated that individuals with high career adaptability and low career establishment and work/life adjustment preoccupations exhibited relatively higher levels of career satisfaction than those with high preoccupations. The study concluded that individuals’ career preoccupations negatively moderated the positive link between their career adaptability resources and career satisfaction. Career discussions should address the career development concerns of professional women in order to enhance their career satisfaction.
Total Rewards and Its Influence on Job Satisfaction and Organisational Commitment in Higher Education
Authors: Mabaso Calvin
Published: October 2020

The shortage of academic staff and the inability of higher education institutions to attract and retain highly qualified talent are critical problems in tertiary education. With the aim of addressing these issues, this article investigates the relationship between total rewards, job satisfaction and organisational commitment in higher education institutions in South Africa. A survey design was used in the study that was conducted. The systematic sampling technique was used to obtain the sample (N = 279) from two universities of technology. The measuring instruments used were the Total Rewards Questionnaire based on the World at Work Total Rewards Model, the Job Satisfaction Survey and the Organisational Commitment Questionnaire. Using the SPSS 24 and AMOS 24 software programs, structural equation modelling (SEM) was performed to analyse the data set. The results revealed that some elements of total rewards had a strong relationship with job satisfaction and organisational commitment among academic staff. The contribution of this study was to enhance the comprehension of existing literature on the relationship between the predictor variables (total rewards elements), job satisfaction and organisational commitment. The findings provided evidence that total rewards played a major role in influencing both job satisfaction and organisational commitment in higher education institutions. Therefore, the rewards specialists in universities of technology could apply a total rewards system to maintain, or even promote, academics’ job satisfaction and organisational commitment.
Customer Service Improvement through Engagement: A Study of the Semi-skilled, Frontline Workforce in the Retail Industry in South Africa
Authors: Lynch Daniella , Hofmeyr Karl , Price Gavin
Published: October 2020

In economically challenging times, business needs to focus on all elements of operation to improve profitability. Engagement has been identified as an emerging theme that is successful in increasing profitability by creating a workforce that is more dedicated and actively present. Within the service and retail industries, engagement levers can be used as a mechanism for enhancing levels of customer service, their primary communication channel with customers. The question of how to maximise engagement within this core frontline, often semi-skilled, workforce is therefore crucial, and it cannot necessarily be approached in the same way as a white-collar, highly educated workforce. A qualitative, inductive and exploratory approach was taken to understand what impacted on and influenced engagement in this setting. Nominal group interviews were held within a South African retail environment, and the responses of 54 participants were captured. Qualitative and quantitative metrics were extrapolated and analysed to add to the understanding of the topic. The key findings revealed that the role the customer played in generating staff engagement was a key lever in a frontline environment, a link not made by existing literature on engagement. The study proposes a Frontline Service Engagement model that provides insight into the complexities of engagement in an African context, and, compared to an international context, helps understand the difference in approach required. Through understanding the complexity of the influences that contribute to this new lever, a strategy to address engagement can be improved to equip managers to increase profitability even in difficult economic times.
Psychological Contract Breach and Its Influence on the Job Embeddedness of Professional Nurses
Authors: Jacobs Sonette , Chrysler-Fox Pharny , Van Wyk Rene
Published: October 2020

A shortage of professional nurses is a global concern, and employers of professional nurses in many countries, including South Africa, are losing them to lucrative international job opportunities, further exacerbating the problem. Traditionally, the migration of nurses is studied in the context of turnover and turnover intentions. With the aim of contributing to the knowledge on the retention of nurses, this study examined whether breach of the psychological contract predicts nurses’ job embeddedness, as embeddedness has been found to increase intention to stay. A cross-sectional sample of 228 professional nurses was drawn from private hospitals in South Africa. Hierarchical regression and ANOVA were used to examine the relationship and group differences. The findings indicate that, after controlling for age, citizenship, and employment status, psychological contract breach negatively impacts job embeddedness. The implication for managers is that employers of professional nurses must honour their obligations and promises made to retain them as part of the retention strategy to stem this outflow and loss of expertise.
Effect of Zolpidem on sleep efficiency and heart rate during daytime nap
Authors: Sinha B , Yadav CT
Published: October 2020

Introduction:

Zolpidem is a non-benzodiazepine and a type-A gamma-aminobutyric acid (GABA) receptor agonist of the imidazopyridine class of drugs which acts as a short-acting sedative and hypnotic. It induces sleep by augmenting its effect in the central nervous system, by binding to GABAA receptor. The drug has been approved for use in USAF and others to induce sleep after extended duration combat mission. Studies are rare where the impact of drug on daytime nap has been studied. In extended duration operation, necessity of inducing sleep to the combatant after the mission is extremely important and unequivocal. The present study was undertaken to observe the impact of Zolpidem on sleep efficiency (SE) and autonomic heart rate (HR) response during short-term daytime nap.

Material and Methods:

In a double-blind repeated measure, randomly ordered design, 20 healthy male volunteers were evaluated for SE and HR during daytime nap after administering two different doses of Zolpidem. The study protocol involved the analysis of SE using polysomnographic recordings. The participants were advised to report to their normal place of work and do only routine works not involving strenuous activities. They were advised to report to the sleep laboratory at 1200 h. Three different sessions were carried out on each participant, keeping a gap of 72 h between two sessions. The participants were allowed to sleep in the sleep laboratory in a thermoneutral and sound-attenuated condition. They were permitted to sleepad libitum. The participants were tested without drug in one of the sessions and during other two sessions, the participants were given 5 mg or 10 mg Zolpidem. One-way ANOVA was carried out to analyze the data and Tukey honestly significant differencepost hoctest was employed to compare between the three conditions.

Results:

Total sleep time (TST) increased significantly from 120.1 ± 38.34 min at baseline to 232.3 ± 41.30 min (P< 0.001) after 5 mg Zolpidem and 249.2 ± 26.92 min after 10 mg Zolpidem (P< 0.001). SE (calculated by dividing the amount of time spent asleep [in min] by the total amount of time in bed [in min]) increased significantly from baseline to post-Zolpidem administration (79 ± 11.52%, 91.5 ± 3.61%, and 94.5 ± 1.59%) (P< 0.001 as compared from baseline data). Average HR (AHR) decreased during sleep from baseline (88.0 ± 8.68 bpm) to 5 mg Zolpidem administration (78.2 ± 7.42) (P< 0.001) and to 10 mg Zolpidem administration (79.2 ± 7.33 bpm) (P< 0.01).

Conclusion:

Zolpidem administration caused an increase in TST and SE and a decrease in AHR during daytime nap.
Analysis of G-induced Loss of Consciousness (G-LOC) and Almost Loss of Consciousness (A-LOC) incidences in high-performance human centrifuge at Institute of Aerospace Medicine Indian Air Force
Authors: Kumar A , Nataraja MS , Sharma V
Published: October 2020

Introduction:

Institute of Aerospace Medicine (IAM) Indian Air Force (IAF) conducts operational training in Aerospace Medicine for IAF fighter aircrew since 2009. This includes high-G training with qualifying criteria of demonstrating ability of the aircrew to sustain 9G for 5 s in closed-loop run (pilot-in-control) wearing anti-G suit while performing anti-G straining maneuver (AGSM). Incidences of inadvertent almost loss of consciousness (A-LOC)/G-induced loss of consciousness (G-LOC) are an unavoidable unintended consequence of such training. The aim of the paper is to study the incidence of G-LOC and A-LOC and its nature in the high-performance human centrifuge (HPHC) and compare it with our previous experiences.

Material and Methods:

A G-LOC/A-LOC proforma was designed at the Department of Acceleration Physiology and Spatial Orientation at IAM IAF to understand the nature and cause of the G-LOC/A-LOC. This was to be filled up by the aircrew on a voluntary basis. The data were analyzed using Microsoft Excel with a significance level set at 95% confidence interval and alpha ≤0.05.

Results:

Fifty-two aircrew (19.92%) experienced inadvertent G-LOC/A-LOC in 83 such episodes (54 G-LOC and 29 A-LOC) during the period January 2018–December 2018. Forty-seven aircrew experiencing G-LOC/ALOC agreed to be part of the study and filled up the proforma after the episodes. The incidence of G-LOC in the institute has reduced significantly over the past two decades, perhaps due to change in the HPHC used for training of aircrew. The incidence of G-LOC found in this study is comparable to the global incidence. Rise in heart rate was higher during A-LOC than G-LOC and was found to be statistically significant (t statistic = 2.33; P = 0.01). Relative incapacitation period was lesser than absolute incapacitation period during G-LOC and was found to be statistically significant (t statistic = 3.29, P = 0.001). G-level at which Type II G-LOC occurred was significantly higher than the Type I G-LOC.

Conclusion:

The incidence of A-LOC/G-LOC has reduced over the past two decades of high G training in IAF and is comparable to global incidence.
An analysis of transcranial doppler to interpret changes in cerebral circulation under +Gz
Authors: Dinakar S , Agarwal A
Published: October 2020

Introduction:

The use of Transcranial Doppler (TCD) to measure the cerebral blood flow velocity (BFV) is one of the most elusive tasks under +Gz. The reason for this is the technical difficulty in keeping the TCD fixed during acceleration. There is no conclusive principle of the behavior of cerebral blood vessels under +Gz, despite earlier attempts in animal/human studies. In our study, we were able to overcome the technical difficulty and record the cerebral BFV of the middle cerebral artery under +Gz.

Material and Methods:

Twenty healthy adult males consented to participate in the study. High-performance human centrifuge was used to subject them to +Gz acceleration. The participants were instrumented with electrocardiography, thermistor bead, oxygen saturation probe, non-invasive blood pressure and TCD probe. Relaxed peripheral light loss (PLL) and straining PLL were recorded in a single gradual-onset rate profile.

Results:

The TCD data were retrieved and the data was plotted. The Doppler waveform varied with a change in +Gz. Pulsatility (Gosling) index was derived. The index increases as Gz level builds up, indicating an increase in arterial resistance. This increase was statistically significant.

Conclusion:

The understanding, so far, has been based on a presumption of vasoconstriction in the cerebral arteries. However, when monitoring TCD against increasing +Gz, it is not the presence or absence of the waveform that is of significance; however, it is the change in the pattern of the waveform that is noteworthy.
Simultaneous analysis of ten drugs of abuse in blood and urine matrix by gas chromatography–mass spectrometry: Implications for air crash investigation
Authors: Santhosh SR , Sampath S , Gupta A , Kumar A
Published: October 2020

Introduction:

Many of abuse drugs can alter a person’s thinking and judgment, leading to health risks, including addiction, drugged driving and infectious disease. Use of illicit drugs by aviation employees is associated with a significantly increased risk of accidents. The detection and quantitation of drugs of abuse in blood is of growing interest in forensic and clinical toxicology. Generally, the screening for drugs of abuse is carried out by using commercially available immunoassay based urine cassettes; however, such results needs to be confirmed by advanced analytical tools like HPLC, GCMS and LCMS. There have been several attempts to develop confirmatory methods for drugs of abuse in blood and urine.

Material and Methods:

In the present study in our laboratory, a single method was attempted for simultaneous detection and quantification of 10 drugs of abuse in whole blood and urine matrix by GC-MS Selective Ion Monitoring (SIM) method.

Results:

Chromatographic separation was optimized and achieved for separation of all 10 compounds using Agilent DB-5MS column. Retention time (Rt), selectivity and sensitivity were achieved by measuring each analyte in Selective Ion Monitoring (SIM) mode. A simple sample preparation method was standardized for extraction of all 10 compounds from blood and urine.

Conclusion:

The developed method in the study permits identification of these analytes from same biological specimen in small quantities and the method is tested on blood and urine matrix spiked with known concentration of pure compounds.
Windblast testing of an aircrew helmet: An approach to neck load analysis
Authors: Tripathy NK , Divya N , Raghunandan V
Published: October 2020

Introduction:

Modern generation fighter aircraft has expanded the escape envelope for a fighter aircrew. With the ejection occurring at very high airspeeds, windblast is a cause of major injuries and fatalities. Flying helmet, before its induction into operational usage, must be tested in simulated windblast conditions to ensure that they provide adequate safety.

Material and Methods:

Windblast tests were conducted on a newly designed/procured helmet in a standard windblast test facility as per Mil Std MIL-V-29591/1. A large instrumented Hybrid III male dummy was used for the tests. The test conditions were: Wind speed 600 ± 60 KEAS, rise time of 125 ± 20 ms, time at peak wind velocity of 300 ± 50 ms, and total exposure time of ≥3 s. Structural integrity, retention with the headform, and recorded neck loads were assessed for interpretation of test results.

Results:

Helmets could withstand the windblast conditions without any significant structural failures and were retained with the headform during the entire duration of test conditions. However, analysis of the neck loads resulted in a significant dilemma in aeromedical decision-making, there being no laid down criteria in the Mil Specification. The neck tension forces were more than the acceptable limits and found to have the potential for significant neck injuries as per the Injury Assessment Reference Values specified in AGARD-AR-330 specifically in the tests where blast was head on and outer visor in up configuration; however, these values were within the acceptable limits as per the other proposed criteria. Similarly, analysis of the neck tension extension combined effects revealed conflicting outcomes for Nij performance limits specified in various standards. This paper discusses the critical analysis of neck loads vis-à-vis the neck injury criteria to understand the neck loads generated during windblast conditions and its implication on aircrew safety.

Conclusion:

Neck loads assessment is critical in predicting aircrew safety during windblast testing. In the absence of a clearly defined criteria in the Mil Specification, critical ananlysis of neck loads vis-à-vis recommended standards in scientific literature be done to make meaningful conclusion.
Ectopic Submandibular Parathyroid Adenoma by Tc-99m Sestamibi SPECT/CT Localization
Authors: Ng Fung Him , Yung King Shing , Luk Wing Hang
Published: October 2020

We present a 74-year-old woman with primary hyperparathyroidism, with elevated parathyroid hormone and calcium. Tc-99m-methoxyisobutyl isonitrile (sestamibi) planar imaging showed a focus of uptake over the inferior aspect of the right submandibular gland that was localized on the single-photon emission computed tomography with CT.
DESCRIPTION OF PARENTING STYLES ON ADOLESCENTS WITH RISK BEHAVIOR IN VOCATIONAL HIGH SCHOOL “X” PANGANDARAN REGENCY
Authors: Setiawan Alex , Juniarti Neti , Adistie Fanny
Published: October 2020

Adolescence is a period that is vulnerable to risky behaviors. Proper parenting style is needed so that adolescents do not engage in risky behaviors such as smoking, drinking alcoholic beverages, abusing drugs, and engaging in premarital sexual relations. The study aimed to describe parenting styles in adolescents with risk behaviors. This research used a descriptive quantitative method with a cross-sectional approach. The population was all parents of students with risk behaviors in Vocational High School "X" totaling 213 people. The sampling technique in this study was proportionate stratified random sampling. The number of samples in this study was 139 people. Data collection was performed by using a Questionnaire Parenting Style and Dimensions instrument which had been tested for validity test with a result (.423-.748)) and realilibily test (>.70). The collected data was analyzed by using a univariate test. The result showed that almost half of respondents (38.12%) on smokers adolescents and (33.33%) on smokers also drinker adolescents used authoritarian parenting. Whereas, respondents on adolescents who smoked also drunk alcohol and used drugs and respondents on adolescent who engage on premarital sex all of respondents (100%) used permissive parenting. Beside that, all of respondents (100%) used authoritarian parenting on adolescents who egange on premarital sex also smoked and used drugs. Therefore, a proper parenting style is very much needed by parent to be able to minimize the level of risk behavior occurrence on adolescents.
Impact of industrial pollution on physiological growth and nutrient contents of common green leafy vegetables
Authors: V Tharani , P Revathi
Published: October 2020

The agriculture has been always remaining as backbone of economy. Maintenance of soil and water quality has been pointed out as one of the major contributing factors for sustainability of agricultural production. Conserving the water sources and agricultural lands for getting non-toxic food from plants, the present study has undertaken to investigate the mineral composition and vitamin contents of green leafy vegetables as well as the effect of pollution on plant physiology. Normal soil and water, Industrial non - recycled water and soil were collected from the Thekkampatti village of Karamadai, Coimbatore district, Tamil Nadu. Industrial recycled water and soil have collected from the Otterpalayam (Annur) of Coimbatore district, Tamil Nadu. The result indicates that industrial non recycled water possess pH of 8.9 shows alkalinity. Industrial water non recycled soil the Chromium (58.0 mg/L) is present in higher quantity. The germination percentage was desirably good in normal soil and followed by water recycled soil cultivated green leaves. In non-recycled soil it was delayed thegermination and percentage also very poor. In case of Amaranthus polygonoides, the germination was completely inhibited by the water recycled soil as well as water non-recycled polluted soil. The impact of pollution present in the non-recycled soil was clearly observed in respective plant leaf numbers, size and shoot length. The present study is also one of the attempts to prove the importance of recycling of industrial pollution as well as the impact of non-recycled heavy metal pollution in common green leafy vegetables growth and nutrients. The industries should follow the recycling process based on the chemicals utilized for their products. The soil and water are need to conserve with efficient recycling methods in order to prevent the pollution which in turn becomes health hazards for the human and other living organisms through crop plants.
Heat and mass transfer of an unsteady mhd peristaltic flow in a porous medium with cross diffusion effect
Authors: R Panneerselvi , N Selvameena , N Sheebarani
Published: October 2020

In this work the significance of Cross Diffusion effect on unsteady MHD peristaltic flow in a porous medium with heat and mass transfer is investigated. The governing partial differentialequations are transformed into dimensionless equations by using dimensionless quantities. Stream function, velocity, temperature, concentration, skin friction, Nusselt number and Sherwood number are obtained. The results are discussed for various emerging parameters encountered in the problem under investigation. The importance of main parameters on the present study is explained graphically
CONTRIBUIÇÕES DO SOFTWARE GEOGEBRA NAS AULAS COM SÓLIDOS GEOMÉTRICOS DE FACES PLANAS NOS ANOS INICIAIS DO ENSINO FUNDAMENTAL
Authors: Teixeira Alcinda Souza Muniz , Mussato Solange
Published: October 2020

Este artigo apresenta resultados parciais de uma pesquisa de mestrado concluída em 2020, que buscou resposta para a seguinte questão de pesquisa: De que forma o software GeoGebra potencializa o processo de ensino de sólidos geométricos com faces planas nos anos iniciais do Ensino Fundamental? Nesta perspectiva, definimos como objetivo investigar as contribuições do software GeoGebra quando utilizado por alunos do 4º ano do Ensino Fundamental para a realização de uma atividade de sólidos geométricos com faces planas. Trata-se de uma pesquisa de cunho qualitativo, com abordagem da Engenharia Didática, cujos resultados apresentados contribuíram para evidenciar as potencialidades que o uso do GeoGebra representa para o desenvolvimento de aulas mais dinâmicas. Desse modo, os dados analisados possibilitaram identificar resultados positivos em relação ao ensino sobre os sólidos geométricos com faces planas, haja vista que a dinamicidade e as potencialidades oferecidas pelo GeoGebra contribuíram para os processos de ensino e de aprendizagem da Geometria Espacial com alunos dos anos iniciais do Ensino Fundamental. Isso, porque, os alunos puderam construir conceitos a partir da visualização e manipulação das figuras na tela do computador, uma vez que as potencialidades do GeoGebra contribuíram para os alunos estabelecerem conexões entre a construção das figuras e a compreensão das propriedades dessas figuras.
Parabolic transformable reflector for CubeSat platform
Authors: Kazantsev Z. A. , Eroshenko A. M. , Uvaev I. V. , Lopatin A. V.
Published: October 2020

CubeSat platform is used for creating small spacecrafts. Antennas for transmission of signals between the spacecraft and subscribers are inalienable parts of it. Different antenna configurations may be installed on a spacecraft depending on functions of their payload. Spacecrafts based on the CubeSat platform are equipped with transformable antennas with a drop-down reflector. There are several requirement to the construction of the reflector designed for operating via the CubSat platform: small volume in folded state; maximal aperture of a parabolic reflective surface in working position; ensuring the required accuracy characteristics of the reflective surface; simplicity of the opening mechanism and low weight. Usage of flexible swivel joints in the design of the antenna allows to create a simple and reliable opening mechanism and to provide the necessary rigidity of the structure and a small mass of the reflector. The paper proposes a new design of a transformable parabolic reflector for a spacecraft on the CubeSat platform. The main power element is a thin-walled torus shell with a reflector opening mechanism in the form of flexible hinges. A geometric analysis was carried out to determine the configuration of the reflector in the folded position. Modal analysis was completed to confirm that the required stiffness was achieved. Based on the analysis results, the design characteristics of the structure were selected that satisfy the condition of the minimum mass of the reflector. A technological process for manufacturing a reflector was developed, with the help of which the model of the structure was made. Reflector tests which were the transformation of the structure from the working position to the transport position and vice versa were carried out. The produced layout demonstrated the possibility of creating flight reflectors, the transform.
Electrochemical noise analysis to obtain the Rsn value via FFT using Excel
Authors: Barrozo Sidineia , Peres Riberto Nunes , Witzler Marcus José , Benedetti Assis Vicente , Fugivara Cecílio Sadao
Published: October 2020

Electrochemical noise (EN) measurements are based on the fluctuations of the electrochemical potential and the current that occur during, for example, a corrosion process without an external signal perturbation. EN analysis (ENA) allows assessment of the type of corrosion and rapid determination of the corrosion rate. Microsoft Excel®, an inexpensive and readily available software package, is an excellent tool for performing repetitive calculations, with automation that saves time for the users. It is a useful tool for the analysis of EN data using fast Fourier transform (FFT), a process that is often made repeatedly and, if not automated, is quite laborious. This work presents a step-by-step procedure using Excel to perform these calculations, automating the process of obtaining the spectral electrochemical noise resistance, . This routine was used to analyze experimental potential and current noise data recorded for chalcopyrite. The results were comparable to those obtained for the same set of experimental data using Origin® software.
BE THE CHANGE YOU WANT TO SEE IN THE WORLD- THE CARVING OF SOCIAL RESPONSIBILITY AMONG THE UNIVERSITY STUDENTS
Authors: Mathew Ancy , Basavaraja B M
Published: October 2020

This paper focuses on integrating social responsibilities among its stake holders who are key persons involved in the operations of the university. Required challenges such as global warming, climate change, shortage of water, lack of good infrastructure, food safety and lack of renewable energy sources to lead a dignified human life. Universities play greater role in shaping the future citizens of the globe. Implementation of CSR programs enhances benefits to the share holders and stake holders. CSR influences the ethical validity and enhances reputation among the education vendors. Students active participation in CSR activities provides self-awareness, development, ethics and values. These activities enhances teamwork, event management, networking and interpersonal skills. This paper is focused on a real life journey of CSR practices in a private, comprehensive technical university of south India. It also demonstrates how a higher education institution can take up and get embedded CSR in the university system in tune with vision of the University.
ASSESSMENT OF GROUNDWATER RESOURCES FOR IRRIGATION PURPOSES IN ASSIUT GOVERNORATE, UPPER EGYPT
Authors: Mamdouh S. Morsi , Farrag Abdelhai A. , Sayed Esam E. A. El
Published: October 2020

A general increase of water demand in Egypt is prominently denoted. This situation is more noticeable in the Middle and Upper Egypt of arid Zone and limited water resources in which Assiut is one of the governorates of this Zone. The main objectives of this study are to assess the groundwater quality for irrigation, and to present solutions for managing and protecting these resources in Assiut area. To achieve that, one hundred and nine groundwater samples were collected from Quaternary aquifer during autumn of the year 2013. Chemical analysis was carried out and analyzed for major and trace elements according to the irrigation water guidelines of (FAO, 1985), and Rowe, et al. 1995, taking into account the spatial variations and the representation of the hydrochemical data. The results show that 47% none degree of restriction on use and 52% Slightly to moderate degree of restriction on use, According TDS hazarded. 55 % belongs to (C2-S1) good water for irrigation all crops in all soils and45 % belongs to (C3 -S1) good water for irrigation all crops in all soils under ordinary and specific condition like adequate drainage and leaching, According U.S. salinity laboratory staff classification depend on (EC,TDS and SAR) hazarded. while according to RSC (residual sodium carbonate100% Low RSC hazard (safe water for irrigation. 89% Excellent water for irrigation sensitive all crops and low likelihood of soil problems and11% good to permissible for irrigation semi - tolerant and tolerant crops and slightly to moderate likelihood of soil problems according Boron content, in compared to recommended limits in (FAO, 1995, 2010) guideline for irrigation water.  Consequently, it is recommended to prevent the sewage and domestic waste water, and the industrial waste water from direct disposal without treatment to the ground wells, irrigation canals and River Nile; avoiding the construction of open septic tanks, especially near the pumping wells; controlling the use of fertilizers and pesticides in the agriculture purposes; selected the suitable crops for every sector (area) according to the chemical character's of the available irrigation water and soil properties.