LLukas22/scidocs huggingface dataset:
An inventory model for deteriorating items with exponential declining demand and partial backlogging

This study proposes an EOQ inventory mathematical model for deteriorating items with exponentially decreasing demand. In the model, the shortages are allowed and partially backordered. The backlogging rate is variable and dependent on the waiting time for the next replenishment. Further, we show that the minimized objective cost function is jointly convex and derive the optimal solution. A numerical example is presented to illustrate the model and the sensitivity analysis is also studied.
Prevalence and associated factors of timely initiation of breastfeeding among mothers at Debre Berhan town, Ethiopia: a cross-sectional study

BACKGROUND
Timely initiation of breastfeeding is defined as putting the newborn to breast within one hour of birth. It serves as the starting point for continuum of care for the newborn health and development. In Ethiopia, there is a considerable variation on timely initiation of breastfeeding among regions. The main aim of this study was to determine prevalence rate and investigate factors associated with timely initiation of breastfeeding practice among mothers in Debre Berhan town, Ethiopia.


METHODS
A community based cross-sectional study was conducted at Debre Berhan town from April 1 to 30, 2013. A total of 416 mothers who had given birth within the last six months were selected by using simple random sampling technique. Descriptive statistics, bivariable and multivariable logistic regression analysis were employed to identify factors associated with timely initiation of breastfeeding.


RESULTS
The prevalence rate of timely initiation of breastfeeding was 62.6 %. The odds of timely initiation of breastfeeding was high among mothers who have monthly income of greater than 1969 Ethiopian Birr (ETB) (adjusted odds ratio [AOR] 2.77; 95 % Confidence Interval [CI] 1.21, 6.32). Having extended family (AOR 0.5; 95 % CI 0.27, 0.95), not being counseled about timely initiation of breastfeeding during antenatal care (AOR 0.40; 95 % CI 0.18, 0.88), delivered by cesarean section (AOR 0.11; 95 % CI 0.04, 0.33), delivery attended by traditional birth attendants or relatives (AOR 0.22; 95 % CI 0.05, 0.87), and not feeding colostrum (AOR 0.07; 95 % CI 0.02, 0.23) were negatively associated with timely initiation of breastfeeding.


CONCLUSION
The practice of timely, also known as early, initiation of breastfeeding was suboptimal. Nearly 40 % of the mothers did not start breastfeeding within one hour after delivery. Findings suggest that in order to improve timely initiation of breastfeeding practice, interventions need to target mothers with extended family, poor socioeconomic status and caesarean delivery. Moreover, mothers who discard colostrum and those who do not deliver under the assistance of health care professional need attention and emphasis has to be given for the breastfeeding counseling service given at antenatal service outlets.
Social Security Taxation and Intergenerational Risk Sharing

The life cycle hypothesis has become the dominant mode used to analyze the effects of a social security system on private saving, the labor/leisure choice, and social welfare. As both Barro and Samuelson indicate, a fully funded Social Security program (in a world of certainty) would drive out an equivalent amount of private saving. If the interest rate is r, the effects of a payment of a dollar into the social security pool while young would just offset* the effects of receiving (1+r) dollars as a transfer when retired. Papers by Diamond, Hi», and Samuelson, among others, have examined the effects of non-fully funded Social Security schemes in a growing economy. A non-fully funded program can be used to alter the private sector's saving rate and, hence, the capital/labor ratio. Social Security, then, can be used as a policy tool for achieving the (or some variant of the) golden rule growth path. Disciplines Growth and Development | Labor Economics | Social Welfare | Taxation This report is available at Iowa State University Digital Repository: http://lib.dr.iastate.edu/econ_las_staffpapers/91 Social Security Taxation and Intergeneratlonal Risk Sharing' Walter Enders and Harvey E. Lapan
A low-fat high-carbohydrate diet supplemented with long-chain n-3 PUFA reduces the risk of the metabolic syndrome.

OBJECTIVE
Dietary changes are major factor in determining cardiovascular risk. We assessed the effects of isoenergetic diets with different fat quantity and quality on the incidence and regression of the metabolic syndrome (MetS) from the LIPGENE project.


METHODS AND DESIGN
Clinical intervention study: the patients (n=337) were randomly assigned to one of four diets for 12 weeks each: two high fat diets, one rich in saturated fat (HSFA) and the other rich in monounsaturated fat (HMUFA), and two low fat diets, one high in complex carbohydrates (LFHCC) supplemented with 1.24g/day of long-chain n-3 polyunsaturated fatty acids (LFHCC n-3) and the other LFHCC diet with placebo (LFHCC).


MEASUREMENTS
the effects on MetS risk criteria were recorded before and after the intervention period.


RESULTS
An enlarged waist circumference (≥88cm for women and ≥102cm for men) was present among 95% of the participants, 88% had elevated blood pressure (>130/85mm Hg or antihypertensive drugs), 77% had elevated fasting plasma glucose (≥5.55mmol/L), 51% were hypertriacylglycerolemic (≥1.7mmol/L), and 72% had low HDL cholesterol (<1.0mmol/L for men, and <1.3mmol/L for women). The prevalence of enlarged waist circumference, hypertension and hypertriacylglycerolemia were reduced after the LFHCC n-3 diet (p<0.05). Thus the prevalence of MetS fell by 20.5% after LFHCC n-3 diet compared with the HSFA (10.6%), HMUFA (12%) diet or LFHCC (10.4%) diets (p<0.028).


CONCLUSIONS
The consumption of a low-fat high-carbohydrate supplemented with n-3 diet reduced the risk of MetS as compared with isoenergetic high-fat (HSFA and HMUFA) and LFHCC diets.
Gender and poverty in South Africa in the era of HIV/AIDS: a quantitative study.

BACKGROUND
Recent research identifies gender inequality as a driver of the HIV/AIDS epidemic. The feminization of poverty is also increasingly apparent, as is the disproportionate vulnerability of members of female-headed households. We sought to examine the relationships among sex, gender, age, HIV status, and socioeconomic characteristics, focusing on heads and nonheads of households.


METHODS
We interviewed 6,338 men and 10,057 women.


RESULTS
Significantly more males (51.4%) than females (34.8%) indicated that they were heads of households (p < 0.001). Female heads of households were significantly more likely to be infected with HIV than their male counterparts (17.9% vs. 13.1%). Among 15-24-year-old males, those who are often without cash are more likely to be infected with HIV than those who are never without cash (OR = 3.33, 95% CI 1.17-9.49). Similar results were observed among females, who sometimes had no cash (OR = 1.86, 95% CI 1.22-2.82), and among adults aged >or=25 years. Results confirmed that age and gender are related to HIV infection in South Africa and that poverty is a social determinant for HIV infection across all age groups. However, sex is a determinant only among the younger age groups. Young female heads of household are more likely to be poor and are more likely to be HIV positive.


CONCLUSIONS
The results indicate that the HIV/AIDS epidemic in South Africa is characterized by gender inequalities. Young women are more likely to be HIV infected, especially heads of households. Young women are also more likely to live in poverty, although this study cannot establish the directionality of a causative relationship between poverty and risk of HIV. Greater attention must be paid to young women, especially those who head households, in terms of treatment, prevention, and poverty alleviation.
Characterizing Linear Size Circuits in Terms of Privacy

In this paper we prove a perhaps unexpected relationship between the complexity class of the boolean functions that have linear size circuits, and n-party private protocols. Speci cally, let f be a boolean function. We show that f has a linear size circuit if and only if f has a 1-private n-party protocol in which the total number of random bits used by all players is constant. From the point of view of complexity theory, our result gives a characterization of the class of linear size circuits in terms of another class of a very di erent nature. From the point of view of privacy, this result provides 1-private protocols that use a constant number of random bits, for many important functions for which no such protocol was previously known. On the other hand, our result suggests that proving, for any NP function, that it has no 1-private constant-random protocol, might be di cult.
Web-based collaborative big data analytics on big data as a service platform

As data has been increasing explosively due to development of social networks and cloud computing, there has been a new challenge for storing, processing, and analyzing a large volume of data. The traditional technologies do not become a proper solution to process big data so that a big data platform has begun to emerge. It is certain that big data platform helps users develop analysis service effectively. However, it still takes a long time to collect data, develop algorithms and analytics services. We present a collaborative big data analytics platform for big data as a service. Developers can collaborate with each other on the platform by sharing data, algorithms, and services. Therefore, this paper describes big data analytics platform that effectively supports to manage big data and develop analytics algorithms and services, collaborating with data owners, data scientists, and service developers on the Web. Finally, we introduce a CCTV metadata analytics service developed on the platform.
The radiation exposure from portal images during the course of breast radiotherapy.

OBJECTIVES
To evaluate the radiation dose to the contralateral breast (CB) from portal images taken during the course of conventional whole breast irradiation (WBI) and partial breast irradiation (PBI).


MATERIALS AND METHODS
The dose to CB from portal images was measured in a female anthropomorphic phantom with 12 thermoluminescent dosimeters placed in the contralateral (right) breast near the midline of the phantom. The average CB dose from portal imaging per monitor unit (MU) was calculated. Twenty WBI patients and 9 PBI patients were randomly selected to obtain the average total MU (ATMU), minimum and maximum MU used to obtain portal images during their treatment. The estimated radiation dose from portal imaging to CB was calculated as average total MU multiplied by average CB dose from portal imaging per MU.


RESULTS
In WBI, the mean dose and range from 20 patients to 2 points (ie, point 1 and 9 in ) nearest to the midline of the phantom were 22.9 (15.1-43.4) cGy, and 8.4 (5.5-15.9) cGy, respectively. The doses to other points ranged from 0.9 cGy to 5.7 cGy. The PBI portal imaging techniques gave a significantly higher dose to most points in CB than the WBI. The doses to all the points ranged from 4.1 cGy to 27.4 cGy. The orthogonal portals contributed over 99% of the dose to CB for all the points. (Figure is included in full-text article.)


CONCLUSION
When acquiring portal images for breast radiotherapy, the number of images, corresponding exposure times, and portal image field size should all be considered.
AC–DC–AC Single-Phase Multilevel Six-Leg Converter With a Reduced Number of Controlled Switches

This paper proposes two unidirectional single-phase ac–dc–ac converters with a reduced number of controlled switches composed of two three-leg converters connected in series. The proposed converters allow us to feed the load voltage with sinusoidal voltages with constant amplitude and frequency and to operate with sinusoidal grid current with a high power factor. The converters can then be used as uninterruptible power supplies and unified power quality conditioners for nonregenerative applications. The system model, space-vector pulse width modulation technique, and a complete control system are given. A method to regulate the dc-link voltages using the voltage vector redundancies is presented. The proposed topologies are compared with the conventional one in terms of operation range, capability to operate with a unity grid power factor, voltage harmonic distortions, semiconductor losses, and others characteristics. Simulation and experimental results in many operating conditions are provided to validate the feasibility of the system.
Antidepressant-induced sexual dysfunction during treatment with fluoxetine, sertraline and trazodone; a randomized controlled trial.

BACKGROUND
Selective serotonin reuptake inhibitors (SSRIs) are common treatments for patients with major depressive disorder (MDD). However, adverse effects of SSRIs on sexual function are common in the treatment of patients with MDD. There is a discrepancy in the reported frequency of SSRI-induced sexual dysfunction. On the other hand, there is also less evidence about sexual dysfunction with serotonin receptor antagonists and reuptake inhibitors (SARIs). Therefore, we aimed to assess sexual dysfunction in MDD patients who received fluoxetine, sertraline and trazodone.


METHOD
In a single-blind, randomized, controlled trial in Kermanshah, Iran, during 2009-2010, 195 patients who met the DSMIV-IR criteria for MDD were enrolled. The patients completed the Hamilton Depression Rating Scale (HAM-D) and the sexual function questionnaire (SFQ). Eligible patients were allocated in three treatment groups (receiving fluoxetine, sertraline or trazodone) for 14 weeks randomly. Measurement of HAMD was repeated in 4-week interval. Analysis for comparing sexual dysfunction among three groups and men and women was performed.


RESULTS
There were 102 men and 93 women in the three groups receiving fluoxetine (n=64), sertraline (n=67) and trazodone (n=64). There was no significant difference in the sexual dysfunction of the patients in the three groups at baseline (P>.05). After treatment, both men and women who had received fluoxetine had the most impairment in desire/drive items (43%-51% and 44%-50%, respectively), while patients receiving trazodone had the least impairment in these items (12%-18% and 23%-24%, respectively). Trazodone was also induced with a lower rate of impairment in arousal/orgasm items in men (9%-15%) compared with the other two drugs. Compared with fluoxetine and trazodone, sertraline was associated with intermediate impairment in sexual function (39%-42% in desire/drive items and 32%-39% in arousal/orgasm items) that was lower than that with fluoxetine and more than that with trazodone.


CONCLUSION
There were different rates of sexual dysfunction with different antidepressants drugs in under treated patients. Compared with fluoxetine, and sertraline, trazodone was associated with the fewest sexual dysfunction. Fluoxetine was also associated with more sexual dysfunction than sertraline. Further research to better identify the differences among antidepressant drugs is recommended.
Cooperative Fog Computing for Dealing with Big Data in the Internet of Vehicles: Architecture and Hierarchical Resource Management

As vehicle applications, mobile devices and the Internet of Things are growing fast, and developing an efficient architecture to deal with the big data in the Internet of Vehicles (IoV) has been an important concern for the future smart city. To overcome the inherent defect of centralized data processing in cloud computing, fog computing has been proposed by offloading computation tasks to local fog servers (LFSs). By considering factors like latency, mobility, localization, and scalability, this article proposes a regional cooperative fog-computing-based intelligent vehicular network (CFC-IoV) architecture for dealing with big IoV data in the smart city. Possible services for IoV applications are discussed, including mobility control, multi-source data acquisition, distributed computation and storage, and multi-path data transmission. A hierarchical model with intra-fog and inter-fog resource management is presented, and energy efficiency and packet dropping rates of LFSs in CFC-IoV are optimized.
Yamaoka Nozomu, a 'humanistic' historian of chemistry.

Biographie et publications de Nozomu (Y.), chimiste japonais passionne de l'histoire de la chimie
[(11)C]methionine positron emission tomography and survival in patients with bone and soft tissue sarcomas treated by carbon ion radiotherapy.

PURPOSE
The development of the novel carbon ion radiotherapy (CIRT) in the treatment of refractory cancers has resulted in the need for a way to accurately evaluate patient prognosis. We evaluated whether L-[methyl-(11)C]-methionine (MET) uptake and its change after CIRT were the early survival predictors in patients with unresectable bone and soft tissue sarcomas.


EXPERIMENTAL DESIGN
MET positron emission tomography was prospectively performed in 62 patients with unresectable bone and soft tissue sarcomas before and within 1 month after CIRT. Tumor MET uptake was measured with the semiquantitative tumor:nontumor ratio (T/N ratio). The MET uptake in the tumor and relevant clinical parameters were entered into univariate and multivariate survival analysis.


RESULTS
The overall median survival time was 20 months. Patients with a baseline T/N ratio of <or=6 had a significant better survival than patients with a baseline T/N ratio >6 (2-year survival rate: 69.4% versus 32.3%; P = 0.01). Patients with a post-CIRT ratio of <or=4.4 had a better survival than that with a post-CIRT ratio >4.4 (2-year survival rate: 63.7% versus 41.3%; P = 0.01). A significant higher survival rate was observed in patients with post-therapeutic MET uptake change of >30% than patients in lower change group (2-year survival rate: 74.6% versus 41.6%; P = 0.049). The multivariate analysis showed that both baseline and post-CIRT T/N ratio were statistically significant independent predictors of patient survival. Tumors with larger T/N ratio had a significantly poorer prognosis.


CONCLUSIONS
MET uptake as measured by either baseline or post-CIRT T/N ratio was an independent predictor of survival in patients with bone and soft tissue sarcomas treated by carbon ion radiotherapy, whereas post-therapeutic MET uptake change might have potential value for the same purpose.
Key challenges for enabling agile BPM with social software

Business Process Management is called agile when it is able to react quickly and adequately to internal and external events. Agile Business Process Management requires putting the lifecycle of business processes on a new paradigm. It is advocated in this paper that social software allows us satisfying the key requirements for enabling agile BPM by applying the four features of social software: weak ties, social production, egalitarianism and mutual service provision. Organisational and semantic integration and responsiveness (of the business processes engineering, execution and management activities) have been identified as the main requirements for implementing an agile BPM lifecycle. Social software may be used in the BPM lifecycle in several manners and using numerous approaches. This
The relationship between observed and perceived assessments of the coach-created motivational environment and links to athlete motivation

Abstract Objectives The majority of research examining the relationship between the coach-created motivational and athlete motivation has relied on self-report measures. Grounded in Duda’s (2013) theoretically integrated model, the present study examined: (1) athletes', coaches' and observers' reports of the multidimensional motivational coaching environment in four European countries, (2) the interrelationships of these different perspectives of the motivational environment, and (3) links between the multidimensional environment and athletes' autonomous, controlled and amotivation. Design We employed a cross-sectional study design and utilized mixed methods to tap the variables of interest. Both descriptive and more sophisticated multi-level statistical analyses were employed to test our hypotheses. Methods Seventy-four grassroots soccer coaches and 882 youth athletes from England, France, Greece and Spain were recruited. Coaches were video-recorded during a training session and observers rated the degree to which the coaching climate was autonomy supportive, controlling, task-involving, ego-involving and relatedness supportive. Athletes and coaches completed questionnaires assessing their perceptions of the coach created climate in relation to the aforementioned dimensions of the environment. Athletes also completed measure of their sport-based motivation regulations. Results A profile of the motivational environment and athlete motivation was presented actoss four countries. There were weak associations found between different perspectives of the multidimensional coaching environment. However, athletes', coaches' and observers' reports of features of the motivational environment emerged as significant predictors of athletes' autonomous, controlled and amotivation. Conclusions Results provide partial support for findings of previous studies examining athlete motivation correlates of the motivational environment relying solely on self-report measures. Findings also point to the value of adopting a mixed-methodological approach and including athletes', coaches' and observers' reports of the environment when time and resources allow.
The Complexity of Weighted Boolean #CSP Modulo k

We prove a complexity dichotomy theorem for counting weighted Boolean CSP modulo k for any positive integer k > 1. This generalizes a theorem by Faben for the unweighted setting. In the weighted setting, there are new interesting tractable problems. We first prove a dichotomy theorem for the finite field case where k is a prime. It turns out that the dichotomy theorem for the finite field is very similar to the one for the complex weighted Boolean #CSP, found by [Cai, Lu and Xia, STOC 2009]. Then we further extend the result to an arbitrary integer k.
Novel display of knotted DNA molecules by two-dimensional gel electrophoresis

We describe a two-dimensional agarose gel electrophoresis procedure that improves the resolution of knotted DNA molecules. The first gel dimension is run at low voltage, and DNA knots migrate according to their compactness. The second gel dimension is run at high voltage, and DNA knots migrate according to other physical parameters such as shape and flexibility. In comparison with one-dimensional gel electrophoresis, this procedure segregates the knotted DNA molecules from other unknotted forms of DNA, and partially resolves populations of knots that have the same number of crossings. The two-dimensional display may allow quantitative and qualitative characterization of different types of DNA knots simply by gel velocity.