Psychometric Evaluation of the Cybersecurity Concept Inventory

We present a psychometric evaluation of a revised version of the Cybersecurity Concept Inventory (CCI) , completed by 354 students from 29 colleges and universities. The CCI is a conceptual test of understanding created to enable research on instruction quality in cybersecurity education. This work extends previous expert review and small-scale pilot testing of the CCI. Results show that the CCI aligns with a curriculum many instructors expect from an introductory cybersecurity course, and that it is a valid and reliable tool for assessing what conceptual cybersecurity knowledge students learned.

Understanding Barriers to Diagnosis in a Rare, Genetic Disease: Delays and Errors Diagnosing Schwannomatosis

Diagnosis of rare, genetic diseases is challenging, but conceptual frameworks of the diagnostic process can be used to guide benchmarking and process improvement initiatives. Using the National Academy of Medicine diagnostic framework, we assessed the extent of, and reasons for, diagnostic delays and errors in schwannomatosis, a neurogenetic syndrome characterized by nerve sheath tumors and chronic pain. We reviewed the medical records of 97 patients with confirmed or probable schwannomatosis seen in two U.S. tertiary care clinics from 2005-2016. Survival analysis revealed a median time from first symptom to diagnosis of 16.7 years (95% CI, 7.5-26.0 years) and median time from first medical consultation to diagnosis of 9.8 years (95% CI, 3.5-16.2 years). Factors associated with longer times to diagnosis included initial signs/symptoms that were intermittent, non-specific, or occurred at younger ages (p<0.05). Thirty-six percent of patients experienced a misdiagnosis of underlying genetic condition (18.6%), pain etiology (16.5%) and/or tumor imaging/pathology (11.3%). One-fifth (19.6%) of patients had a clear missed opportunity for appropriate workup that could have led to an earlier schwannomatosis diagnosis. These results suggest that interventions in clinician education, genetic testing availability, expert review of pathology findings, and automatic triggers for genetics referrals may improve diagnosis in schwannomatosis.

Assessing The Performance Characteristics of Handheld Ultrasound In A Rheumatic Heart Disease Screening Program

Background: Rheumatic heart disease affects 33 million people in low and middle income countries and is the leading cause of cardiovascular death among children and young adults. Penicillin prophylaxis has been shown to improve valvular function among patients with clinically silent or mild disease. Efforts to expand echocardiographic screening are focusing on simplified protocols, non-physician ultrasonographers, and portable ultrasound devices, including handheld ultrasound. Recent advances support the use of single-view screening protocols. With the increasing availability and low cost of handheld devices, prospective studies are needed to evaluate their performance in these settings. Methods: We conducted a cross-sectional pilot study among 19 at-risk school-children participating in a rheumatic heart disease screening program in Ethiopia comparing a handheld ultrasound device (Phillips Lumify) to a fully-equipped portable ultrasound machine (Sonosite M-Turbo). Results: Agreement between devices was similar for expert and non-expert review (84%). However, when reviewed by a non-expert the Lumify identified fewer screen-positive cases (p-value 0.083). We also compared non-expert to expert interpretation by device and found a significant difference in interpretation for the Lumify (p-value 0.025). There was a trend towards shorter jet length by color Doppler in the handheld ultrasound device for both expert and non-expert review. Conclusions: Our study highlights that screening echocardiograms for RHD may yield different results when a handheld ultrasound device is used.

Assessing K-9 Teachers' Computational Thinking Skills

Many national curricula have incorporated computational thinking (CT) into compulsory education. Teacher ability to deliver the revised curriculum determines whether these new skills can be successfully integrated into teaching. Therefore, it is crucial to examine teacher readiness. This study measured Swedish K-9 teacher CT skills through a CT test validated by an expert review panel and a principal component analysis. Additionally, we engaged statistical analyses to examine the relationship between the teachers' background and their CT test scores, as well as their self-reported ability to teach CT. The result demonstrated the teachers' proficiency in different types of CT skills. Another finding revealed that the type of programming language mastered by teachers was associated with both their CT test score and self-reported ability to teach CT. This CT test can support teachers to identify specific areas for professional development and may facilitate the school management to plan teachers' competence training strategically.

VALUE STREAM MAPPING OF OCEAN IMPORT CONTAINERS: A PROCESS CYCLE EFFICIENCY PERSPECTIVE

International cargo transportation is majorly dependent on marine transport, which moves 80% of the international cargo. With the increase in vessel size and the same yard area available for container transportation, it is important to study the processes and understand the efficiency of the container operations process. This research paper aims to review the import container transportation process and understand the process cycle efficiency through lean six sigma concepts. The process is evaluated from the operations process perspective and documentation process at one of the ports of India. The research has been designed by conducting an industry expert review on the process of container transportation from vessel berthing to gate out for import containers, utilising lean six sigma principles such as value stream mapping (VSM) and process cycle efficiency. The results have contributed to the existing knowledge in identifying the waste in the container handling process and demonstrated the inefficiency in the system from the perspective of waiting time of containers due to customs examination, scanning, and inter-terminal handling and movement. The process cycle efficiency of 40% is calculated by analysing the detailed time of handling containers from vessel berthing to gate out. A new future value stream mapping is proposed considering the process cycle efficiency. Future studies will focus on studying this process for export containers and benchmarking the results with the top-performing ocean ports globally.

SOAL OPEN-ENDED BERKONTEKS BENGKULU TENTANG BANGUN RUANG SISI DATAR UNTUK KEMAMPUAN BERPIKIR KREATIF MATEMATIS

Students’ ability for thinking creatively is very important due to highly support the increase of global competition in the current digital era. However, the condition of students' creative thinking abilities is still relatively low, which strongly leads the learning program that can explore the competence of students' creative thinking abilities, one of which is by using open-ended questions under the Bengkulu context. This study aims to produce open-ended questions on mathematical creative thinking skills that are valid and practical. This research was development research by using the 1993 Tessmer development model (modified by Zulkardi, 2006). In this study, the stages used preliminary, self-evaluation, expert review, and one-to-one. The test subjects of this study were class VIII Junior High School students. This research was conducted from June to July 2021. The data analysis technique used qualitative and quantitative analysis. Based on the results of the research showed that the open-ended questions developed were valid based on validators' comments and practical based on the results of the answers and interviews by students.

SOAL KEMAMPUAN PEMECAHAN MASALAH MATEMATIS BERKONTEKS KEARIFAN LOKAL BENGKULU

This study aims to produce products in the form of mathematical problem-solving ability questions based on Bengkulu local wisdom that are valid, clear, and have a good level of difficulty and discriminatory index. The subjects in this study were 30 grade VIII students of SMPN 07 Bengkulu Selatan. This development research was conducted using the Tessmer model which consisted of preliminary, self-evaluation, expert review, one-to-one, and small group stages. The data analysis used was qualitative analysis at the expert review stage to determine the validation of the questions, both in terms of content, construction, and language; one-to-one process analysis to find out the clarity of the questions, and quantitative analysis of the results of the small group to determine the characteristics of good questions based on the level of difficulty and the index of discriminating power of the questions. Based on the results of data analysis, this study produced 7 standardized questions from 10 questions that had gone through the expert review, one-to-one, and small group stages. Standardization can be seen from the level of difficulty and a good item discriminatory index.