This study aimed to examine the possible intrapersonal (i.e., attention, depression) and interpersonal (i.e., social relationships with friends, social relationships with teachers) problems related to mobile phone dependency and their impacts on academic achievement in adolescents in South Korea using a national sample of 2159 middle and high school students (1074 male and 1085 female). A structural equation modeling approach with mediation analysis was employed to test the seven hypotheses drawn from conceptual and empirical bases. Results showed that mobile phone dependency negatively predicted attention and positively predicted depression, which in turn, affect social relationships with friends and both Korean language arts and mathematics achievement. Also, the mediating roles of attention, depression, and relationships with friends were found between mobile phone dependency and the academic achievement of middle and high school students in S. Korea. Based on the findings, implications of the current study and future directions for research were discussed.

Objective: The East Tennessee State University Quillen College of Medicine Library (ETSUQCOML) wanted to determine if the introduction of phone calls to an existing outreach visit increased the usage of the ETSUQCOML’s services. Methods: Eight hospitals and sixteen clinics were chosen to participate. Two site visits were made a month to each participating institution. A total of two phone calls and two emails a month were given to multiple contacts in the hospital or clinic. The hospitals and clinics were randomized to determine which received the phone call intervention. Interlibrary loan statistics and reference search statistics were then analyzed to determine if there was a statistically significant difference. The data were also analyzed to determine if the intervention was more successful in hospitals or clinics. Results: Librarians learned to what degree email and phone calls could be substituted for personal visits in an outreach service as a means of maintaining it and not experiencing a decline in service requests. Conclusions: In today’s economic times, it is important to maintain services to underserved health care providers but to do it in the most cost effective manner. This study has provided helpful data as to the possibility of substituting less expensive contacts such as emails or phone calls for more expensive ones such as face-to-face visits in order to sustain an outreach service. The authors are looking to extend this project to multiple end-points such as six months, nine months, and one year to determine sustainability.

Production and purification of rare-earth elements (REE) is among the most demanding separation practices. In general, extracting REE from natural ores requires a large amount of chemicals and energy. Separating the ores contents is also a complex process which needs a tremendous amount of organic solvent mixtures to produce high purity lanthanides. Partial mitigation to this issue lies in urban mining. Recycling old, discarded electronics is an important step in implementing the circular economy concept, making electronics more sustainable. In this work, specific components of old mobile phones were selected for targeted metal recovery. The main focus was on treating permanent magnets containing Nd, Pr and Dy as REE. These magnets were dissolved with nitric acid and the dissolutions were used to measure multicomponent adsorption in different polymeric commercial cationic resins. The adsorption of lanthanides on Amberlite IR-120 and DOWEX 50WX8 resins is found to reach equilibrium within 60 minutes. Across all the metals and lanthanides, Amberlite IR-120 has shown a greater adsorption. Generally, it is observed that more metals are adsorbed at higher pH values. This behavior seems to be consistent for both metals and lanthanides. The experimental data of the three lanthanides (Pr+3 , Nd+3 , and Dy+3) was fitted with diverse models and Sips rendered the best results. Freundlich and Langmuir models also provide satisfactory correlation coefficients

Does the use of a cell phone while driving influence the driver's ability to execute a proper turn? Is there difference between genders pertaining to motor skill while driving in a simulated driving environment? To accomplish this task, three groups of ten participants (5 women and 5 men) each were tested using a scripted test scenario focusing on left and right turns. The participants were made to drive through a test scenario to get used to the driving simulator. The scenario for the experimental group was an inner-city training scenario with the presence of vehicular traffic and the main focus area was on six critical turns (3 left and 3 rights). The apparatus used for this study was the "Patrol Simulator" built by GE Driver Development. A 2 (Gender) x 3 (Cell phone condition) between subjects design was used to assess the differences in mean driving performance between gender (male and female) at 3 cell phone conditions (No Phone, Phone No Conversation, Phone with Conversation). The study verified that cellular phones would adversely affects a driver's ability to perform turns, and showed that gender plays a role in this effect. However, it did confirm that gender does not play any role in a person's overall ability to drive. The results indicated a significant main effect for Cell phone Condition for overall turns , F (2, 24) = 38.83, p > .0005, n[eta]² = .76. Results also indicated a significant interaction between Gender and Cell Phone Conditions, F (2, 24) = 3.97, p=.032, n[eta]² = 0.25.

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Yes / The use of digital technology in health and social care is developing rapidly. It is promoted in UK policy and research which suggests varied results surrounding its implementation and outcomes. This article aimed to test the implementation and outcomes of a short messaging service sent to a dedicated phone. The target cohort were drug treatment clients in two sites in Northern England. Materials and methods: Through staff focus groups and interviews with a small cohort of clients, the implementation and perceptions of the system were examined. Results: Nineteen participants were recruited to site 1 (15 male, 4 female, average age=37.7 years) and 12 participants were recruited to site 2 (9 male, 3 female, average age=40.3 years). One outcome that was of interest was well-being in treatment which, in this study, was described as an overall sense of feeling better rather than just focusing on the rehabilitation aspect of the programme. Other outcomes included: the successful completion of treatment and any relapse or associated reported drug use. Discussion: The system shows some evidence of its ‘social actor’ role; however, its implementation was hindered by staff citing that it called for increased resources. For future implementation the use of client’s own phones may be considered which may help to embed the system more fully in recovery planning and targeting clients at a different treatment stage. Conclusions: Despite some indications of positive results for clients and a perception that the system may have value as an addition to existing clinical interventions, more evaluation is required to determine whether this system can be implemented in a drug treatment setting.

<p><strong>Problem: </strong>As almost everyone has a cell phone today, keeping your customers is very important. An important group for cell phone carriers is young people. This is a group that uses cell phones more and more. However, attracting these people could be hard. One of the most common strategies to attract customers today is promotion through TV-commercials. Another strategy that has gained popularity is branding. We therefore asked ourselves how these strategies could affect each other and eventually young peoples’ choice of cell phone carrier.</p><p><strong>Purpose: </strong>Our purpose is to investigate how branding and communication strategies are best used in cell phone carriers TV- commercials, and how they affect young peoples’ consumer behavioral processes.</p><p><strong>Method: </strong>To solve the purpose of this thesis we have used an inductive approach. We have gathered both quantitative and qualitative data. Quantitative data have been collected from a questionnaire filled out by students from Jönköpings University and qualitative data from a focus group we have held. The results were analyzed with help from theories about communication strategies and branding.</p><p><strong>Conclusion: </strong>Branding has a strong influence on young peoples’ view on cell phone carriers TV- commercials. However cell phone carriers TV- commercials have no direct effect on young peoples’ choice of cell phone carrier. It just has an indirect effect since; TV- commercial can be considered a source of information or a way of forming attitudes.</p>

A thesis submitted in fulfilment of the requirements for the degree of Master of Science Computer Science in the School of Computer Science. Faculty of Science November 21, 2016. / There is stiff competition for customers and market share in the South African telecommunications industry amongst the four predominant mobile service providers, namely Vodacom, MTN, Cell C and Telkom Mobile. The First National Bank (FNB) through one of its entities, FNB Connect, has also joined this intensely competitive environment. These companies face a constant challenge of having to come up with new and innovative ways of attracting new customers and retaining their current ones. Cell C has embarked on a good strategy of claiming solid market share and growing itself against the competition by using the Private Label Promotions (PLP) group, a leading BEE Level 3 company that provides a variety of business solutions, to market GetMore, its value-added service package. A recommender system could be used to suggest and promote the items available in this package to existing and potential clients (users). There are different approaches to recommendation, the most widely used ones being the collaborative and content-based recommendation. The collaborative filtering approach uses the ratings of other users to recommend the items the current (active) user might like. In the content-based approach, items are recommended in terms of their content similarity to items a user has previously liked, or elements that have matched a user’s attributes (features). Hybrid recommendation approaches are used To eliminate the drawbacks individually associated with the CF and CBF approaches and to leverage their advantages. One of the aims of this research was to design and implement a prototype hybrid recommender system that would be used to recommend Cell C’s GetMore package to current and potential subscribers. The system was to implement matrix factorisation (collaborative) and cosine similarity (content-based) techniques. Several experiments were conducted to evaluate its performance and quality. The metrics used included Mean Absolute Error (MAE), Root Mean Squared Error (RMSE) and Area Under the ROC Curve (AUC). We expected the proposed hybrid recommender system would leverage the advantages provided by its different components and demonstrate its effectiveness in providing Cell C’s customers with accurate and meaningful recommendations of its GetMore package services. Keywords: Content-based Recommendation, Collaborative Recommendation, Hybrid Recommendation, Cosine Similarity, Matrix Factorisation, Association Rule Mining, J48 Classifier, Decision Table, Naive Bayes, Simple K-means, Expectation Maximization, Farthest First, Predictive Apriori / LG2017